out2in.c
out2in_ed.c
nat_ipfix_logging.c
- nat_det.c
- nat_det_in2out.c
- nat_det_out2in.c
nat_dpo.c
nat44_cli.c
nat44_handoff.c
nat44_handoff.c
nat64_in2out.c
nat64_out2in.c
- nat_det_in2out.c
- nat_det_out2in.c
out2in.c
out2in_ed.c
LINK_LIBRARIES nat
)
+
+add_vpp_plugin(det44
+ SOURCES
+ det44/det44.c
+ det44/det44_cli.c
+ det44/det44_api.c
+ det44/det44_in2out.c
+ det44/det44_out2in.c
+
+ MULTIARCH_SOURCES
+ det44/det44_in2out.c
+ det44/det44_out2in.c
+
+ API_FILES
+ det44/det44.api
+ nat_types.api
+
+ LINK_LIBRARIES nat
+)
- Endpoint dependent NAT
- TCP MSS clamping
- Local bypass (DHCP)
- - CGN - deterministic NAT
+ - DET44 - deterministic NAT (CGN)
- NAT64
- NAT66
- DS-lite
--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+option version = "1.0.0";
+import "vnet/ip/ip_types.api";
+import "vnet/interface_types.api";
+import "plugins/nat/nat_types.api";
+
+/**
+ * @file det44.api
+ * @brief VPP control-plane API messages.
+ *
+ * This file defines VPP control-plane API messages which are generally
+ * called through a shared memory interface.
+ */
+
+/** \brief Enable/disable DET44 plugin
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param inside_vrf - inside VRF id
+ @param outside_vrf - outside VRF id
+ @param enable - true if enable, false if disable
+*/
+autoreply define det44_plugin_enable_disable {
+ u32 client_index;
+ u32 context;
+ u32 inside_vrf;
+ u32 outside_vrf;
+ bool enable;
+ vl_api_interface_index_t sw_if_index;
+ option status="in_progress";
+};
+
+/** \brief Enable/disable DET44 feature on the interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param is_inside - true if interface is inside, false if outside
+ @param sw_if_index - software index of the interface
+*/
+autoreply define det44_interface_add_del_feature {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ bool is_inside;
+ vl_api_interface_index_t sw_if_index;
+ option status="in_progress";
+};
+
+/** \brief Dump interfaces with DET44 feature
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define det44_interface_dump {
+ u32 client_index;
+ u32 context;
+ option status="in_progress";
+};
+
+/** \brief DET44 interface details response
+ @param context - sender context, to match reply w/ request
+ @param is_inside - true if interface is inside, false if outside
+ @param sw_if_index - software index of the interface
+*/
+define det44_interface_details {
+ u32 context;
+ bool is_inside;
+ bool is_outside;
+ vl_api_interface_index_t sw_if_index;
+ option status="in_progress";
+};
+
+/** \brief Add/delete DET44 mapping
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param in_addr - inside IPv4 address
+ @param in_plen - inside IPv4 address prefix length
+ @param out_addr - outside IPv4 address
+ @param out_plen - outside IPv4 address prefix length
+*/
+autoreply define det44_add_del_map {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_ip4_address_t in_addr;
+ u8 in_plen;
+ vl_api_ip4_address_t out_addr;
+ u8 out_plen;
+};
+
+/** \brief Get outside address and port range from inside address
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IP address
+*/
+define det44_forward {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+};
+
+/** \brief Get outside address and port range from inside address
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param out_port_lo - outside port range start
+ @param out_port_hi - outside port range end
+ @param out_addr - outside IPv4 address
+*/
+define det44_forward_reply {
+ u32 context;
+ i32 retval;
+ u16 out_port_lo;
+ u16 out_port_hi;
+ vl_api_ip4_address_t out_addr;
+};
+
+/** \brief Get inside address from outside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param out_port - outside port
+ @param out_addr - outside IPv4 address
+*/
+define det44_reverse {
+ u32 client_index;
+ u32 context;
+ u16 out_port;
+ vl_api_ip4_address_t out_addr;
+};
+
+/** \brief Get inside address from outside address and port reply
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param in_addr - inside IP address
+*/
+define det44_reverse_reply {
+ u32 context;
+ i32 retval;
+ vl_api_ip4_address_t in_addr;
+};
+
+/** \brief Dump DET44 mappings
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define det44_map_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief DET44 users response
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IPv4 address
+ @param in_plen - inside IPv4 address prefix length
+ @param out_addr - outside IPv4 address
+ @param out_plen - outside IPv4 address prefix length
+ @param sharing_ratio - outside to inside address sharing ratio
+ @param ports_per_host - number of ports available to a host
+ @param ses_num - number of sessions belonging to this mapping
+*/
+define det44_map_details {
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+ u8 in_plen;
+ vl_api_ip4_address_t out_addr;
+ u8 out_plen;
+ u32 sharing_ratio;
+ u16 ports_per_host;
+ u32 ses_num;
+};
+
+/** \brief Close DET44 session by outside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param out_addr - outside IPv4 address
+ @param out_port - outside port
+ @param ext_addr - external host IPv4 address
+ @param ext_port - external host port
+*/
+autoreply define det44_close_session_out {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t out_addr;
+ u16 out_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+};
+
+/** \brief Close DET44 session by inside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IP address
+ @param in_port - inside port
+ @param ext_addr - external host IP address
+ @param ext_port - external host port
+*/
+autoreply define det44_close_session_in {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+ u16 in_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+};
+
+/** \brief Dump DET44 sessions
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param user_addr - address of an inside user whose sessions to dump
+*/
+define det44_session_dump {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t user_addr;
+};
+
+/** \brief DET44 sessions reply
+ @param context - sender context, to match reply w/ request
+ @param in_port - inside port
+ @param ext_addr - external host IPv4 address
+ @param ext_port - external host port
+ @param out_port - outside port
+ @param state - session state
+ @param expire - session expiration timestamp
+*/
+define det44_session_details {
+ u32 context;
+ u16 in_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+ u16 out_port;
+ u8 state;
+ u32 expire;
+};
+
+/** \brief Set values of timeouts for DET44 sessions (seconds)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param udp - UDP timeout (default 300sec)
+ @param tcp_established - TCP established timeout (default 7440sec)
+ @param tcp_transitory - TCP transitory timeout (default 240sec)
+ @param icmp - ICMP timeout (default 60sec)
+*/
+autoreply define det44_set_timeouts {
+ u32 client_index;
+ u32 context;
+ u32 udp;
+ u32 tcp_established;
+ u32 tcp_transitory;
+ u32 icmp;
+ option status="in_progress";
+};
+
+/** \brief Get values of timeouts for DET44 sessions (seconds)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define det44_get_timeouts {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief Get values of timeouts for DET44 sessions reply
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param udp - UDP timeout
+ @param tcp_established - TCP established timeout
+ @param tcp_transitory - TCP transitory timeout
+ @param icmp - ICMP timeout
+*/
+define det44_get_timeouts_reply {
+ u32 context;
+ i32 retval;
+ u32 udp;
+ u32 tcp_established;
+ u32 tcp_transitory;
+ u32 icmp;
+ option status="in_progress";
+};
+
+/*
+ * Obsolete deterministic API to be removed
+ */
+
+/** \brief Add/delete NAT deterministic mapping
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param in_addr - inside IPv4 address
+ @param in_plen - inside IPv4 address prefix length
+ @param out_addr - outside IPv4 address
+ @param out_plen - outside IPv4 address prefix length
+*/
+autoreply define nat_det_add_del_map {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_ip4_address_t in_addr;
+ u8 in_plen;
+ vl_api_ip4_address_t out_addr;
+ u8 out_plen;
+ option status="deprecated";
+};
+
+/** \brief Get outside address and port range from inside address
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IP address
+*/
+define nat_det_forward {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+ option status="deprecated";
+};
+
+/** \brief Get outside address and port range from inside address
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param out_port_lo - outside port range start
+ @param out_port_hi - outside port range end
+ @param out_addr - outside IPv4 address
+*/
+define nat_det_forward_reply {
+ u32 context;
+ i32 retval;
+ u16 out_port_lo;
+ u16 out_port_hi;
+ vl_api_ip4_address_t out_addr;
+ option status="deprecated";
+};
+
+/** \brief Get inside address from outside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param out_port - outside port
+ @param out_addr - outside IPv4 address
+*/
+define nat_det_reverse {
+ u32 client_index;
+ u32 context;
+ u16 out_port;
+ vl_api_ip4_address_t out_addr;
+ option status="deprecated";
+};
+
+/** \brief Get inside address from outside address and port reply
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param in_addr - inside IP address
+*/
+define nat_det_reverse_reply {
+ u32 context;
+ i32 retval;
+ vl_api_ip4_address_t in_addr;
+ option status="deprecated";
+};
+
+/** \brief Dump NAT deterministic mappings
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat_det_map_dump {
+ u32 client_index;
+ u32 context;
+ option status="deprecated";
+};
+
+/** \brief NAT users response
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IPv4 address
+ @param in_plen - inside IPv4 address prefix length
+ @param out_addr - outside IPv4 address
+ @param out_plen - outside IPv4 address prefix length
+ @param sharing_ratio - outside to inside address sharing ratio
+ @param ports_per_host - number of ports available to a host
+ @param ses_num - number of sessions belonging to this mapping
+*/
+define nat_det_map_details {
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+ u8 in_plen;
+ vl_api_ip4_address_t out_addr;
+ u8 out_plen;
+ u32 sharing_ratio;
+ u16 ports_per_host;
+ u32 ses_num;
+ option status="deprecated";
+};
+
+/** \brief Close deterministic NAT session by outside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param out_addr - outside IPv4 address
+ @param out_port - outside port
+ @param ext_addr - external host IPv4 address
+ @param ext_port - external host port
+*/
+autoreply define nat_det_close_session_out {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t out_addr;
+ u16 out_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+ option status="deprecated";
+};
+
+/** \brief Close deterministic NAT session by inside address and port
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param in_addr - inside IP address
+ @param in_port - inside port
+ @param ext_addr - external host IP address
+ @param ext_port - external host port
+*/
+autoreply define nat_det_close_session_in {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t in_addr;
+ u16 in_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+ option status="deprecated";
+};
+
+/** \brief Dump determinstic NAT sessions
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param user_addr - address of an inside user whose sessions to dump
+*/
+define nat_det_session_dump {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t user_addr;
+ option status="deprecated";
+};
+
+/** \brief Deterministic NAT sessions reply
+ @param context - sender context, to match reply w/ request
+ @param in_port - inside port
+ @param ext_addr - external host IPv4 address
+ @param ext_port - external host port
+ @param out_port - outside NAT port
+ @param state - session state
+ @param expire - session expiration timestamp
+*/
+define nat_det_session_details {
+ u32 context;
+ u16 in_port;
+ vl_api_ip4_address_t ext_addr;
+ u16 ext_port;
+ u16 out_port;
+ u8 state;
+ u32 expire;
+ option status="deprecated";
+};
--- /dev/null
+/*
+ * det44.c - deterministic NAT
+ *
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @file
+ * @brief deterministic NAT (CGN)
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/ip4.h>
+#include <vpp/app/version.h>
+#include <vnet/plugin/plugin.h>
+
+#include <nat/det44/det44.h>
+
+det44_main_t det44_main;
+
+/* *INDENT-OFF* */
+VNET_FEATURE_INIT (ip4_det44_in2out, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "det44-in2out",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature"),
+};
+VNET_FEATURE_INIT (ip4_det44_out2in, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "det44-out2in",
+ .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa",
+ "ip4-sv-reassembly-feature",
+ "ip4-dhcp-client-detect"),
+};
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "Deterministic NAT (CGN)",
+};
+/* *INDENT-ON* */
+
+void
+det44_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
+ int is_add)
+{
+ det44_main_t *dm = &det44_main;
+ fib_prefix_t prefix = {
+ .fp_len = p_len,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr->as_u32,
+ },
+ };
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ if (is_add)
+ {
+ fib_table_entry_update_one_path (fib_index,
+ &prefix,
+ dm->fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4,
+ NULL,
+ sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+ }
+ else
+ {
+ fib_table_entry_delete (fib_index, &prefix, dm->fib_src_low);
+ }
+}
+
+/**
+ * @brief Add/delete deterministic NAT mapping.
+ *
+ * Create bijective mapping of inside address to outside address and port range
+ * pairs, with the purpose of enabling deterministic NAT to reduce logging in
+ * CGN deployments.
+ *
+ * @param in_addr Inside network address.
+ * @param in_plen Inside network prefix length.
+ * @param out_addr Outside network address.
+ * @param out_plen Outside network prefix length.
+ * @param is_add If 0 delete, otherwise add.
+ */
+int
+snat_det_add_map (ip4_address_t * in_addr, u8 in_plen,
+ ip4_address_t * out_addr, u8 out_plen, int is_add)
+{
+ static snat_det_session_t empty_snat_det_session = { 0 };
+ det44_main_t *dm = &det44_main;
+ ip4_address_t in_cmp, out_cmp;
+ det44_interface_t *i;
+ snat_det_map_t *mp;
+ u8 found = 0;
+
+ in_cmp.as_u32 = in_addr->as_u32 & ip4_main.fib_masks[in_plen];
+ out_cmp.as_u32 = out_addr->as_u32 & ip4_main.fib_masks[out_plen];
+ vec_foreach (mp, dm->det_maps)
+ {
+ /* Checking for overlapping addresses to be added here */
+ if (mp->in_addr.as_u32 == in_cmp.as_u32 &&
+ mp->in_plen == in_plen &&
+ mp->out_addr.as_u32 == out_cmp.as_u32 && mp->out_plen == out_plen)
+ {
+ found = 1;
+ break;
+ }
+ }
+
+ /* If found, don't add again */
+ if (found && is_add)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ /* If not found, don't delete */
+ if (!found && !is_add)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ if (is_add)
+ {
+ pool_get (dm->det_maps, mp);
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->in_addr.as_u32 = in_cmp.as_u32;
+ mp->in_plen = in_plen;
+ mp->out_addr.as_u32 = out_cmp.as_u32;
+ mp->out_plen = out_plen;
+ mp->sharing_ratio = (1 << (32 - in_plen)) / (1 << (32 - out_plen));
+ mp->ports_per_host = (65535 - 1023) / mp->sharing_ratio;
+
+ vec_validate_init_empty (mp->sessions,
+ DET44_SES_PER_USER * (1 << (32 - in_plen)) -
+ 1, empty_snat_det_session);
+ }
+ else
+ {
+ vec_free (mp->sessions);
+ vec_del1 (dm->det_maps, mp - dm->det_maps);
+ }
+
+ /* Add/del external address range to FIB */
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces, ({
+ if (det44_interface_is_inside(i))
+ continue;
+ det44_add_del_addr_to_fib(out_addr, out_plen, i->sw_if_index, is_add);
+ goto out;
+ }));
+ /* *INDENT-ON* */
+out:
+ return 0;
+}
+
+int
+det44_set_timeouts (nat_timeouts_t * timeouts)
+{
+ det44_main_t *dm = &det44_main;
+ if (timeouts->udp)
+ dm->timeouts.udp = timeouts->udp;
+ if (timeouts->tcp.established)
+ dm->timeouts.tcp.established = timeouts->tcp.established;
+ if (timeouts->tcp.transitory)
+ dm->timeouts.tcp.transitory = timeouts->tcp.transitory;
+ if (timeouts->icmp)
+ dm->timeouts.icmp = timeouts->icmp;
+ return 0;
+}
+
+nat_timeouts_t
+det44_get_timeouts ()
+{
+ det44_main_t *dm = &det44_main;
+ return dm->timeouts;
+}
+
+void
+det44_reset_timeouts ()
+{
+ det44_main_t *dm = &det44_main;
+ dm->timeouts.udp = 300;
+ dm->timeouts.tcp.established = 7440;
+ dm->timeouts.tcp.transitory = 240;
+ dm->timeouts.icmp = 60;
+}
+
+int
+det44_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
+{
+ det44_main_t *dm = &det44_main;
+ det44_interface_t *tmp, *i = 0;
+ const char *feature_name;
+ int rv;
+
+ // TODO: if plugin is not enabled do not register nodes on interfaces
+ // rather make a structure and when enable call is used
+ // then register nodes
+
+ /* *INDENT-OFF* */
+ pool_foreach (tmp, dm->interfaces, ({
+ if (tmp->sw_if_index == sw_if_index)
+ {
+ i = tmp;
+ goto out;
+ }
+ }));
+ /* *INDENT-ON* */
+out:
+
+ feature_name = is_inside ? "det44-in2out" : "det44-out2in";
+
+ if (is_del)
+ {
+ if (!i)
+ {
+ det44_log_err ("det44 is not enabled on this interface");
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 0);
+ if (rv)
+ return rv;
+
+ rv = vnet_feature_enable_disable ("ip4-unicast", feature_name,
+ sw_if_index, 1, 0, 0);
+ if (rv)
+ return rv;
+
+ pool_put (dm->interfaces, i);
+ }
+ else
+ {
+ if (i)
+ {
+ det44_log_err ("det44 is already enabled on this interface");
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ rv = ip4_sv_reass_enable_disable_with_refcnt (sw_if_index, 1);
+ if (rv)
+ return rv;
+
+ rv = vnet_feature_enable_disable ("ip4-unicast", feature_name,
+ sw_if_index, 1, 0, 0);
+ if (rv)
+ return rv;
+
+ pool_get (dm->interfaces, i);
+ clib_memset (i, 0, sizeof (*i));
+
+ i->sw_if_index = sw_if_index;
+
+ if (is_inside)
+ i->flags |= DET44_INTERFACE_FLAG_IS_INSIDE;
+ else
+ i->flags |= DET44_INTERFACE_FLAG_IS_OUTSIDE;
+ }
+
+ if (!is_inside)
+ {
+ u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ sw_if_index);
+ // add/del outside interface fib to registry
+ u8 found = 0;
+ det44_fib_t *outside_fib;
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, dm->outside_fibs)
+ {
+ if (outside_fib->fib_index == fib_index)
+ {
+ if (!is_del)
+ {
+ outside_fib->refcount++;
+ }
+ else
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ {
+ vec_del1 (dm->outside_fibs,
+ outside_fib - dm->outside_fibs);
+ }
+ }
+ found = 1;
+ break;
+ }
+ }
+ /* *INDENT-ON* */
+ if (!is_del && !found)
+ {
+ vec_add2 (dm->outside_fibs, outside_fib, 1);
+ outside_fib->fib_index = fib_index;
+ outside_fib->refcount = 1;
+ }
+ // add/del outside address to FIB
+ snat_det_map_t *mp;
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps, ({
+ det44_add_del_addr_to_fib(&mp->out_addr,
+ mp->out_plen, sw_if_index, !is_del);
+ }));
+ /* *INDENT-ON* */
+ }
+ return 0;
+}
+
+/**
+ * @brief The 'det44-expire-walk' process's main loop.
+ *
+ * Check expire time for active sessions.
+ */
+static uword
+det44_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ det44_main_t *dm = &det44_main;
+ snat_det_session_t *ses;
+ snat_det_map_t *mp;
+
+ vlib_process_wait_for_event_or_clock (vm, 10.0);
+ vlib_process_get_events (vm, NULL);
+ u32 now = (u32) vlib_time_now (vm);
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps, ({
+ vec_foreach(ses, mp->sessions)
+ {
+ /* Delete if session expired */
+ if (ses->in_port && (ses->expire < now))
+ snat_det_ses_close (mp, ses);
+ }
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+void
+det44_create_expire_walk_process ()
+{
+ det44_main_t *dm = &det44_main;
+
+ if (dm->expire_walk_node_index)
+ return;
+
+ dm->expire_walk_node_index = vlib_process_create (vlib_get_main (),
+ "det44-expire-walk",
+ det44_expire_walk_fn,
+ 16 /* stack_bytes */ );
+}
+
+int
+det44_plugin_enable (det44_config_t c)
+{
+ det44_main_t *dm = &det44_main;
+
+ if (plugin_enabled () == 1)
+ {
+ det44_log_err ("plugin already enabled!");
+ return 1;
+ }
+
+ det44_log_err ("inside %u, outside %u", c.inside_vrf_id, c.outside_vrf_id);
+
+ dm->outside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+ c.outside_vrf_id,
+ dm->fib_src_hi);
+ dm->inside_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+ c.inside_vrf_id,
+ dm->fib_src_hi);
+
+ det44_create_expire_walk_process ();
+ dm->mss_clamping = 0;
+ dm->config = c;
+ dm->enabled = 1;
+ return 0;
+}
+
+int
+det44_plugin_disable ()
+{
+ det44_main_t *dm = &det44_main;
+ det44_interface_t *i, *interfaces;
+ snat_det_map_t *mp;
+ int rv = 0;
+
+ if (plugin_enabled () == 0)
+ {
+ det44_log_err ("plugin already disabled!");
+ return 1;
+ }
+
+ // DET44 cleanup (order dependent)
+ // 1) remove interfaces (det44_interface_add_del) removes map ranges from fib
+ // 2) free sessions
+ // 3) free maps
+
+ interfaces = vec_dup (dm->interfaces);
+ vec_foreach (i, interfaces)
+ {
+ vnet_main_t *vnm = vnet_get_main ();
+
+ if (i->flags & DET44_INTERFACE_FLAG_IS_INSIDE)
+ {
+ rv = det44_interface_add_del (i->sw_if_index, i->flags, 1);
+ if (rv)
+ {
+ det44_log_err ("inside interface %U del failed",
+ unformat_vnet_sw_interface, vnm, i->sw_if_index);
+ }
+ }
+
+ if (i->flags & DET44_INTERFACE_FLAG_IS_OUTSIDE)
+ {
+ rv = det44_interface_add_del (i->sw_if_index, i->flags, 1);
+ if (rv)
+ {
+ det44_log_err ("outside interface %U del failed",
+ unformat_vnet_sw_interface, vnm, i->sw_if_index);
+ }
+
+ }
+ }
+ vec_free (interfaces);
+
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps,
+ ({
+ vec_free (mp->sessions);
+ }));
+ /* *INDENT-ON* */
+
+ det44_reset_timeouts ();
+ dm->enabled = 0;
+
+ pool_free (dm->interfaces);
+ pool_free (dm->det_maps);
+
+ return rv;
+}
+
+static void
+det44_update_outside_fib (ip4_main_t * im,
+ uword opaque,
+ u32 sw_if_index, u32 new_fib_index,
+ u32 old_fib_index)
+{
+ det44_main_t *dm = &det44_main;
+
+ det44_fib_t *outside_fib;
+ det44_interface_t *i;
+
+ u8 is_add = 1;
+ u8 match = 0;
+
+ if (plugin_enabled () == 0)
+ return;
+
+ if (new_fib_index == old_fib_index)
+ return;
+
+ if (!vec_len (dm->outside_fibs))
+ return;
+
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces,
+ ({
+ if (i->sw_if_index == sw_if_index)
+ {
+ if (!(det44_interface_is_outside (i)))
+ return;
+ match = 1;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (!match)
+ return;
+
+ vec_foreach (outside_fib, dm->outside_fibs)
+ {
+ if (outside_fib->fib_index == old_fib_index)
+ {
+ outside_fib->refcount--;
+ if (!outside_fib->refcount)
+ vec_del1 (dm->outside_fibs, outside_fib - dm->outside_fibs);
+ break;
+ }
+ }
+
+ vec_foreach (outside_fib, dm->outside_fibs)
+ {
+ if (outside_fib->fib_index == new_fib_index)
+ {
+ outside_fib->refcount++;
+ is_add = 0;
+ break;
+ }
+ }
+
+ if (is_add)
+ {
+ vec_add2 (dm->outside_fibs, outside_fib, 1);
+ outside_fib->refcount = 1;
+ outside_fib->fib_index = new_fib_index;
+ }
+}
+
+static clib_error_t *
+det44_init (vlib_main_t * vm)
+{
+ det44_main_t *dm = &det44_main;
+ ip4_table_bind_callback_t cb;
+ vlib_node_t *node;
+
+ clib_memset (dm, 0, sizeof (*dm));
+
+ dm->ip4_main = &ip4_main;
+ dm->log_class = vlib_log_register_class ("det44", 0);
+
+ node = vlib_get_node_by_name (vm, (u8 *) "det44-in2out");
+ dm->in2out_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "det44-out2in");
+ dm->out2in_node_index = node->index;
+
+ dm->fib_src_hi = fib_source_allocate ("det44-hi",
+ FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+ dm->fib_src_low = fib_source_allocate ("det44-low",
+ FIB_SOURCE_PRIORITY_LOW,
+ FIB_SOURCE_BH_SIMPLE);
+
+ cb.function = det44_update_outside_fib;
+ cb.function_opaque = 0;
+ vec_add1 (dm->ip4_main->table_bind_callbacks, cb);
+
+ det44_reset_timeouts ();
+ return det44_api_hookup (vm);
+}
+
+VLIB_INIT_FUNCTION (det44_init);
+
+u8 *
+format_det44_session_state (u8 * s, va_list * args)
+{
+ u32 i = va_arg (*args, u32);
+ u8 *t = 0;
+
+ switch (i)
+ {
+#define _(v, N, str) case DET44_SESSION_##N: t = (u8 *) str; break;
+ foreach_det44_session_state
+#undef _
+ default:
+ t = format (t, "unknown");
+ }
+ s = format (s, "%s", t);
+ return s;
+}
+
+u8 *
+format_det_map_ses (u8 * s, va_list * args)
+{
+ snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
+ ip4_address_t in_addr, out_addr;
+ u32 in_offset, out_offset;
+ snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
+ u32 *i = va_arg (*args, u32 *);
+
+ u32 user_index = *i / DET44_SES_PER_USER;
+ in_addr.as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
+ user_index);
+ in_offset =
+ clib_net_to_host_u32 (in_addr.as_u32) -
+ clib_net_to_host_u32 (det_map->in_addr.as_u32);
+ out_offset = in_offset / det_map->sharing_ratio;
+ out_addr.as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
+ out_offset);
+ s =
+ format (s,
+ "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
+ format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
+ format_ip4_address, &out_addr,
+ clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
+ &ses->out.ext_host_addr,
+ clib_net_to_host_u16 (ses->out.ext_host_port),
+ format_det44_session_state, ses->state, ses->expire);
+
+ return s;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * det44.h - deterministic NAT definitions
+ *
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @brief Deterministic NAT (CGN) definitions
+ */
+
+#ifndef __included_det44_h__
+#define __included_det44_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/icmp46_packet.h>
+#include <vnet/api_errno.h>
+#include <vnet/fib/fib_source.h>
+#include <vppinfra/dlist.h>
+#include <vppinfra/error.h>
+#include <vlibapi/api.h>
+#include <vlib/log.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/ip/reass/ip4_sv_reass.h>
+
+#include <nat/lib/lib.h>
+#include <nat/lib/inlines.h>
+
+/* Session state */
+#define foreach_det44_session_state \
+ _(0, UNKNOWN, "unknown") \
+ _(1, UDP_ACTIVE, "udp-active") \
+ _(2, TCP_SYN_SENT, "tcp-syn-sent") \
+ _(3, TCP_ESTABLISHED, "tcp-established") \
+ _(4, TCP_FIN_WAIT, "tcp-fin-wait") \
+ _(5, TCP_CLOSE_WAIT, "tcp-close-wait") \
+ _(6, TCP_CLOSING, "tcp-closing") \
+ _(7, TCP_LAST_ACK, "tcp-last-ack") \
+ _(8, TCP_CLOSED, "tcp-closed") \
+ _(9, ICMP_ACTIVE, "icmp-active")
+
+typedef enum
+{
+#define _(v, N, s) DET44_SESSION_##N = v,
+ foreach_det44_session_state
+#undef _
+} det44_session_state_t;
+
+#define DET44_SES_PER_USER 1000
+
+typedef struct
+{
+ u16 identifier;
+ u16 sequence;
+} icmp_echo_header_t;
+
+typedef struct
+{
+ u16 src_port, dst_port;
+} tcp_udp_header_t;
+
+typedef struct
+{
+ u32 cached_sw_if_index;
+ u32 cached_ip4_address;
+} det44_runtime_t;
+
+typedef struct nat_timeouts_s
+{
+ u32 udp;
+
+ struct
+ {
+ u32 transitory;
+ u32 established;
+ } tcp;
+
+ u32 icmp;
+
+} nat_timeouts_t;
+
+/* deterministic session outside key */
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ ip4_address_t ext_host_addr;
+ u16 ext_host_port;
+ u16 out_port;
+ };
+ u64 as_u64;
+ };
+} snat_det_out_key_t;
+
+typedef struct
+{
+ /* Inside network port */
+ u16 in_port;
+ /* Outside network address and port */
+ snat_det_out_key_t out;
+ /* Session state */
+ u8 state;
+ /* Expire timeout */
+ u32 expire;
+} snat_det_session_t;
+
+typedef struct
+{
+ /* inside IP address range */
+ ip4_address_t in_addr;
+ u8 in_plen;
+ /* outside IP address range */
+ ip4_address_t out_addr;
+ u8 out_plen;
+ /* inside IP addresses / outside IP addresses */
+ u32 sharing_ratio;
+ /* number of ports available to internal host */
+ u16 ports_per_host;
+ /* session counter */
+ u32 ses_num;
+ /* vector of sessions */
+ snat_det_session_t *sessions;
+} snat_det_map_t;
+
+typedef struct
+{
+ u32 sw_if_index;
+ u8 flags;
+} det44_interface_t;
+
+typedef struct
+{
+
+ u32 outside_vrf_id;
+ u32 inside_vrf_id;
+
+} det44_config_t;
+
+typedef struct
+{
+ u32 fib_index;
+ u32 refcount;
+} det44_fib_t;
+
+typedef struct det44_main_s
+{
+ det44_config_t config;
+
+ u32 outside_fib_index;
+ u32 inside_fib_index;
+
+ /* Vector of outside fibs */
+ det44_fib_t *outside_fibs;
+
+ fib_source_t fib_src_hi;
+ fib_source_t fib_src_low;
+
+ u32 out2in_node_index;
+ u32 in2out_node_index;
+
+ /* Deterministic NAT mappings */
+ snat_det_map_t *det_maps;
+
+ /* TCP MSS clamping */
+ u16 mss_clamping;
+
+ /* Protocol timeouts */
+ nat_timeouts_t timeouts;
+
+ /* Expire walk process node index */
+ u32 expire_walk_node_index;
+
+ u32 enabled;
+
+ /* API message ID base */
+ u16 msg_id_base;
+
+ /* log class */
+ vlib_log_class_t log_class;
+
+ det44_interface_t *interfaces;
+
+ /* convenience */
+ ip4_main_t *ip4_main;
+ /* required */
+ vnet_main_t *vnet_main;
+
+} det44_main_t;
+
+extern det44_main_t det44_main;
+
+/* logging */
+#define det44_log_err(...) \
+ vlib_log(VLIB_LOG_LEVEL_ERR, det44_main.log_class, __VA_ARGS__)
+#define det44_log_warn(...) \
+ vlib_log(VLIB_LOG_LEVEL_WARNING, det44_main.log_class, __VA_ARGS__)
+#define det44_log_notice(...) \
+ vlib_log(VLIB_LOG_LEVEL_NOTICE, det44_main.log_class, __VA_ARGS__)
+#define det44_log_info(...) \
+ vlib_log(VLIB_LOG_LEVEL_INFO, det44_main.log_class, __VA_ARGS__)
+#define det44_log_debug(...)\
+ vlib_log(VLIB_LOG_LEVEL_DEBUG, det44_main.log_class, __VA_ARGS__)
+
+/* Deterministic NAT interface flags */
+#define DET44_INTERFACE_FLAG_IS_INSIDE 1
+#define DET44_INTERFACE_FLAG_IS_OUTSIDE 2
+
+/** \brief Check if Deterministic NAT interface is inside.
+ @param i Deterministic NAT interface
+ @return 1 if inside interface
+*/
+#define det44_interface_is_inside(i) i->flags & DET44_INTERFACE_FLAG_IS_INSIDE
+
+/** \brief Check if Deterministic NAT interface is outside.
+ @param i Deterministic NAT interface
+ @return 1 if outside interface
+*/
+#define det44_interface_is_outside(i) i->flags & DET44_INTERFACE_FLAG_IS_OUTSIDE
+
+static_always_inline u8
+plugin_enabled ()
+{
+ det44_main_t *dm = &det44_main;
+ return dm->enabled;
+}
+
+extern vlib_node_registration_t det44_in2out_node;
+extern vlib_node_registration_t det44_out2in_node;
+
+int det44_plugin_enable ();
+int det44_plugin_disable ();
+
+int det44_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del);
+
+int det44_set_timeouts (nat_timeouts_t * timeouts);
+nat_timeouts_t det44_get_timeouts ();
+void det44_reset_timeouts ();
+
+/* format functions */
+format_function_t format_det_map_ses;
+
+int snat_det_add_map (ip4_address_t * in_addr, u8 in_plen,
+ ip4_address_t * out_addr, u8 out_plen, int is_add);
+
+/* icmp session match functions */
+u32 icmp_match_out2in_det (vlib_node_runtime_t * node,
+ u32 thread_index, vlib_buffer_t * b0,
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
+u32 icmp_match_in2out_det (vlib_node_runtime_t * node,
+ u32 thread_index, vlib_buffer_t * b0,
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
+u32 det44_icmp_in2out (vlib_buffer_t * b0, ip4_header_t * ip0,
+ icmp46_header_t * icmp0, u32 sw_if_index0,
+ u32 rx_fib_index0, vlib_node_runtime_t * node,
+ u32 next0, u32 thread_index, void *d, void *e);
+u32 det44_icmp_out2in (vlib_buffer_t * b0, ip4_header_t * ip0,
+ icmp46_header_t * icmp0, u32 sw_if_index0,
+ u32 rx_fib_index0, vlib_node_runtime_t * node,
+ u32 next0, u32 thread_index, void *d, void *e);
+
+static_always_inline int
+is_addr_in_net (ip4_address_t * addr, ip4_address_t * net, u8 plen)
+{
+ if (net->as_u32 == (addr->as_u32 & ip4_main.fib_masks[plen]))
+ return 1;
+ return 0;
+}
+
+static_always_inline snat_det_map_t *
+snat_det_map_by_user (ip4_address_t * user_addr)
+{
+ det44_main_t *dm = &det44_main;
+ snat_det_map_t *mp;
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps,
+ ({
+ if (is_addr_in_net(user_addr, &mp->in_addr, mp->in_plen))
+ return mp;
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+static_always_inline snat_det_map_t *
+snat_det_map_by_out (ip4_address_t * out_addr)
+{
+ det44_main_t *dm = &det44_main;
+ snat_det_map_t *mp;
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps,
+ ({
+ if (is_addr_in_net(out_addr, &mp->out_addr, mp->out_plen))
+ return mp;
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+static_always_inline void
+snat_det_forward (snat_det_map_t * dm, ip4_address_t * in_addr,
+ ip4_address_t * out_addr, u16 * lo_port)
+{
+ u32 in_offset, out_offset;
+
+ in_offset = clib_net_to_host_u32 (in_addr->as_u32) -
+ clib_net_to_host_u32 (dm->in_addr.as_u32);
+ out_offset = in_offset / dm->sharing_ratio;
+ out_addr->as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (dm->out_addr.as_u32) +
+ out_offset);
+ *lo_port = 1024 + dm->ports_per_host * (in_offset % dm->sharing_ratio);
+}
+
+static_always_inline void
+snat_det_reverse (snat_det_map_t * dm, ip4_address_t * out_addr, u16 out_port,
+ ip4_address_t * in_addr)
+{
+ u32 in_offset1, in_offset2, out_offset;
+
+ out_offset = clib_net_to_host_u32 (out_addr->as_u32) -
+ clib_net_to_host_u32 (dm->out_addr.as_u32);
+ in_offset1 = out_offset * dm->sharing_ratio;
+ in_offset2 = (out_port - 1024) / dm->ports_per_host;
+ in_addr->as_u32 =
+ clib_host_to_net_u32 (clib_net_to_host_u32 (dm->in_addr.as_u32) +
+ in_offset1 + in_offset2);
+}
+
+static_always_inline u32
+snat_det_user_ses_offset (ip4_address_t * addr, u8 plen)
+{
+ return (clib_net_to_host_u32 (addr->as_u32) & pow2_mask (32 - plen)) *
+ DET44_SES_PER_USER;
+}
+
+static_always_inline snat_det_session_t *
+snat_det_get_ses_by_out (snat_det_map_t * dm, ip4_address_t * in_addr,
+ u64 out_key)
+{
+ u32 user_offset;
+ u16 i;
+
+ user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (dm->sessions[i + user_offset].out.as_u64 == out_key)
+ return &dm->sessions[i + user_offset];
+ }
+
+ return 0;
+}
+
+static_always_inline snat_det_session_t *
+snat_det_find_ses_by_in (snat_det_map_t * dm, ip4_address_t * in_addr,
+ u16 in_port, snat_det_out_key_t out_key)
+{
+ snat_det_session_t *ses;
+ u32 user_offset;
+ u16 i;
+
+ user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ ses = &dm->sessions[i + user_offset];
+ if (ses->in_port == in_port &&
+ ses->out.ext_host_addr.as_u32 == out_key.ext_host_addr.as_u32 &&
+ ses->out.ext_host_port == out_key.ext_host_port)
+ return &dm->sessions[i + user_offset];
+ }
+
+ return 0;
+}
+
+static_always_inline snat_det_session_t *
+snat_det_ses_create (u32 thread_index, snat_det_map_t * dm,
+ ip4_address_t * in_addr, u16 in_port,
+ snat_det_out_key_t * out)
+{
+ u32 user_offset;
+ u16 i;
+
+ user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
+
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (!dm->sessions[i + user_offset].in_port)
+ {
+ if (clib_atomic_bool_cmp_and_swap
+ (&dm->sessions[i + user_offset].in_port, 0, in_port))
+ {
+ dm->sessions[i + user_offset].out.as_u64 = out->as_u64;
+ dm->sessions[i + user_offset].state = DET44_SESSION_UNKNOWN;
+ dm->sessions[i + user_offset].expire = 0;
+ clib_atomic_add_fetch (&dm->ses_num, 1);
+ return &dm->sessions[i + user_offset];
+ }
+ }
+ }
+
+ // TODO:
+ /*snat_ipfix_logging_max_entries_per_user (thread_index,
+ DET44_SES_PER_USER,
+ in_addr->as_u32); */
+ return 0;
+}
+
+static_always_inline void
+snat_det_ses_close (snat_det_map_t * dm, snat_det_session_t * ses)
+{
+ if (clib_atomic_bool_cmp_and_swap (&ses->in_port, ses->in_port, 0))
+ {
+ ses->out.as_u64 = 0;
+ clib_atomic_add_fetch (&dm->ses_num, -1);
+ }
+}
+
+clib_error_t *det44_api_hookup (vlib_main_t * vm);
+
+#endif /* __included_det44_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @brief Deterministic NAT (CGN) plugin API implementation
+ */
+
+#include <vnet/ip/ip_types_api.h>
+#include <nat/det44/det44.h>
+#include <nat/det44/det44.api_enum.h>
+#include <nat/det44/det44.api_types.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip.h>
+
+#include <vlibmemory/api.h>
+
+#define REPLY_MSG_ID_BASE dm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+vl_api_det44_add_del_map_t_handler (vl_api_det44_add_del_map_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_add_del_map_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t in_addr, out_addr;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ rv = snat_det_add_map (&in_addr, mp->in_plen, &out_addr,
+ mp->out_plen, mp->is_add);
+ REPLY_MACRO (VL_API_DET44_ADD_DEL_MAP_REPLY);
+}
+
+static void
+vl_api_det44_forward_t_handler (vl_api_det44_forward_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_forward_reply_t *rmp;
+ int rv = 0;
+ u16 lo_port = 0, hi_port = 0;
+ snat_det_map_t *m;
+ ip4_address_t in_addr, out_addr;
+
+ out_addr.as_u32 = 0;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_forward (m, &in_addr, &out_addr, &lo_port);
+ hi_port = lo_port + m->ports_per_host - 1;
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_FORWARD_REPLY,
+ ({
+ rmp->out_port_lo = ntohs (lo_port);
+ rmp->out_port_hi = ntohs (hi_port);
+ clib_memcpy (rmp->out_addr, &out_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_reverse_t_handler (vl_api_det44_reverse_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_reverse_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t out_addr, in_addr;
+ snat_det_map_t *m;
+
+ in_addr.as_u32 = 0;
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_reverse (m, &out_addr, htons (mp->out_port), &in_addr);
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_REVERSE_REPLY,
+ ({
+ clib_memcpy (rmp->in_addr, &in_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+sent_det44_map_details (snat_det_map_t * m, vl_api_registration_t * reg,
+ u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_map_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_MAP_DETAILS + dm->msg_id_base);
+ clib_memcpy (rmp->in_addr, &m->in_addr, 4);
+ rmp->in_plen = m->in_plen;
+ clib_memcpy (rmp->out_addr, &m->out_addr, 4);
+ rmp->out_plen = m->out_plen;
+ rmp->sharing_ratio = htonl (m->sharing_ratio);
+ rmp->ports_per_host = htons (m->ports_per_host);
+ rmp->ses_num = htonl (m->ses_num);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_map_dump_t_handler (vl_api_det44_map_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ snat_det_map_t *m;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ vec_foreach(m, dm->det_maps)
+ sent_det44_map_details(m, reg, mp->context);
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_close_session_out_t_handler (vl_api_det44_close_session_out_t
+ * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_close_session_out_reply_t *rmp;
+ ip4_address_t out_addr, ext_addr, in_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_reverse (m, &ext_addr, ntohs (mp->out_port), &in_addr);
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ key.out_port = mp->out_port;
+ ses = snat_det_get_ses_by_out (m, &in_addr, key.as_u64);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_DET44_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+vl_api_det44_close_session_in_t_handler (vl_api_det44_close_session_in_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_close_session_in_reply_t *rmp;
+ ip4_address_t in_addr, ext_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ ses = snat_det_find_ses_by_in (m, &in_addr, mp->in_port, key);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_DET44_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+send_det44_session_details (snat_det_session_t * s,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_session_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_SESSION_DETAILS + dm->msg_id_base);
+ rmp->in_port = s->in_port;
+ clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+ rmp->ext_port = s->out.ext_host_port;
+ rmp->out_port = s->out.out_port;
+ rmp->state = s->state;
+ rmp->expire = ntohl (s->expire);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_session_dump_t_handler (vl_api_det44_session_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+ ip4_address_t user_addr;
+ snat_det_map_t *m;
+ snat_det_session_t *s, empty_ses;
+ u16 i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memset (&empty_ses, 0, sizeof (empty_ses));
+ clib_memcpy (&user_addr, mp->user_addr, 4);
+ m = snat_det_map_by_user (&user_addr);
+ if (!m)
+ return;
+
+ s = m->sessions + snat_det_user_ses_offset (&user_addr, m->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (s->out.as_u64)
+ send_det44_session_details (s, reg, mp->context);
+ s++;
+ }
+}
+
+static void
+ vl_api_det44_plugin_enable_disable_t_handler
+ (vl_api_det44_plugin_enable_disable_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_plugin_enable_disable_reply_t *rmp;
+ det44_config_t c = { 0 };
+ int rv = 0;
+ if (mp->enable)
+ {
+ c.outside_vrf_id = ntohl (mp->outside_vrf);
+ c.inside_vrf_id = ntohl (mp->inside_vrf);
+ rv = det44_plugin_enable (c);
+ }
+ else
+ {
+ rv = det44_plugin_disable ();
+ }
+ REPLY_MACRO (VL_API_DET44_PLUGIN_ENABLE_DISABLE_REPLY);
+}
+
+static void
+ vl_api_det44_interface_add_del_feature_t_handler
+ (vl_api_det44_interface_add_del_feature_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_interface_add_del_feature_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ int rv = 0;
+ VALIDATE_SW_IF_INDEX (mp);
+ rv = det44_interface_add_del (sw_if_index, mp->is_inside, !mp->is_add);
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO (VL_API_DET44_INTERFACE_ADD_DEL_FEATURE_REPLY);
+}
+
+static void
+det44_send_interface_details (det44_interface_t * i,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_interface_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_INTERFACE_DETAILS + dm->msg_id_base);
+ rmp->sw_if_index = ntohl (i->sw_if_index);
+ rmp->is_outside = det44_interface_is_outside (i);
+ rmp->is_inside = det44_interface_is_inside (i);
+ rmp->context = context;
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_interface_dump_t_handler (vl_api_det44_interface_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ det44_interface_t *i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces,
+ ({
+ det44_send_interface_details(i, reg, mp->context);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_set_timeouts_t_handler (vl_api_det44_set_timeouts_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_set_timeouts_reply_t *rmp;
+ nat_timeouts_t timeouts;
+ int rv = 0;
+ timeouts.udp = ntohl (mp->udp);
+ timeouts.tcp.established = ntohl (mp->tcp_established);
+ timeouts.tcp.transitory = ntohl (mp->tcp_transitory);
+ timeouts.icmp = ntohl (mp->icmp);
+ rv = det44_set_timeouts (&timeouts);
+ REPLY_MACRO (VL_API_DET44_SET_TIMEOUTS_REPLY);
+}
+
+static void
+vl_api_det44_get_timeouts_t_handler (vl_api_det44_get_timeouts_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_get_timeouts_reply_t *rmp;
+ nat_timeouts_t timeouts;
+ int rv = 0;
+ timeouts = det44_get_timeouts ();
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_GET_TIMEOUTS_REPLY,
+ ({
+ rmp->udp = htonl (timeouts.udp);
+ rmp->tcp_established = htonl (timeouts.tcp.established);
+ rmp->tcp_transitory = htonl (timeouts.tcp.transitory);
+ rmp->icmp = htonl (timeouts.icmp);
+ }))
+ /* *INDENT-ON* */
+}
+
+/*
+ * Obsolete deterministic API to be removed
+ */
+
+static void
+vl_api_nat_det_add_del_map_t_handler (vl_api_nat_det_add_del_map_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_add_del_map_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t in_addr, out_addr;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ rv = snat_det_add_map (&in_addr, mp->in_plen, &out_addr,
+ mp->out_plen, mp->is_add);
+ REPLY_MACRO (VL_API_NAT_DET_ADD_DEL_MAP_REPLY);
+}
+
+static void
+vl_api_nat_det_forward_t_handler (vl_api_nat_det_forward_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_forward_reply_t *rmp;
+ int rv = 0;
+ u16 lo_port = 0, hi_port = 0;
+ snat_det_map_t *m;
+ ip4_address_t in_addr, out_addr;
+
+ out_addr.as_u32 = 0;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_forward (m, &in_addr, &out_addr, &lo_port);
+ hi_port = lo_port + m->ports_per_host - 1;
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_DET_FORWARD_REPLY,
+ ({
+ rmp->out_port_lo = ntohs (lo_port);
+ rmp->out_port_hi = ntohs (hi_port);
+ clib_memcpy (rmp->out_addr, &out_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_nat_det_reverse_t_handler (vl_api_nat_det_reverse_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_reverse_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t out_addr, in_addr;
+ snat_det_map_t *m;
+
+ in_addr.as_u32 = 0;
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_reverse (m, &out_addr, htons (mp->out_port), &in_addr);
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_DET_REVERSE_REPLY,
+ ({
+ clib_memcpy (rmp->in_addr, &in_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+sent_nat_det_map_details (snat_det_map_t * m, vl_api_registration_t * reg,
+ u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_map_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_MAP_DETAILS + dm->msg_id_base);
+ clib_memcpy (rmp->in_addr, &m->in_addr, 4);
+ rmp->in_plen = m->in_plen;
+ clib_memcpy (rmp->out_addr, &m->out_addr, 4);
+ rmp->out_plen = m->out_plen;
+ rmp->sharing_ratio = htonl (m->sharing_ratio);
+ rmp->ports_per_host = htons (m->ports_per_host);
+ rmp->ses_num = htonl (m->ses_num);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat_det_map_dump_t_handler (vl_api_nat_det_map_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ snat_det_map_t *m;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ vec_foreach(m, dm->det_maps)
+ sent_nat_det_map_details(m, reg, mp->context);
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_nat_det_close_session_out_t_handler (vl_api_nat_det_close_session_out_t
+ * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_close_session_out_reply_t *rmp;
+ ip4_address_t out_addr, ext_addr, in_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_reverse (m, &ext_addr, ntohs (mp->out_port), &in_addr);
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ key.out_port = mp->out_port;
+ ses = snat_det_get_ses_by_out (m, &in_addr, key.as_u64);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+vl_api_nat_det_close_session_in_t_handler (vl_api_nat_det_close_session_in_t *
+ mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_close_session_in_reply_t *rmp;
+ ip4_address_t in_addr, ext_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ ses = snat_det_find_ses_by_in (m, &in_addr, mp->in_port, key);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+send_nat_det_session_details (snat_det_session_t * s,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_session_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_SESSION_DETAILS + dm->msg_id_base);
+ rmp->in_port = s->in_port;
+ clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+ rmp->ext_port = s->out.ext_host_port;
+ rmp->out_port = s->out.out_port;
+ rmp->state = s->state;
+ rmp->expire = ntohl (s->expire);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat_det_session_dump_t_handler (vl_api_nat_det_session_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+ ip4_address_t user_addr;
+ snat_det_map_t *m;
+ snat_det_session_t *s, empty_ses;
+ u16 i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memset (&empty_ses, 0, sizeof (empty_ses));
+ clib_memcpy (&user_addr, mp->user_addr, 4);
+ m = snat_det_map_by_user (&user_addr);
+ if (!m)
+ return;
+
+ s = m->sessions + snat_det_user_ses_offset (&user_addr, m->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (s->out.as_u64)
+ send_nat_det_session_details (s, reg, mp->context);
+ s++;
+ }
+}
+
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <nat/det44/det44.api.c>
+
+/* Set up the API message handling tables */
+clib_error_t *
+det44_api_hookup (vlib_main_t * vm)
+{
+ det44_main_t *dm = &det44_main;
+ dm->msg_id_base = setup_message_id_table ();
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @file
+ * @brief DET44 CLI
+ */
+#include <nat/det44/det44.h>
+
+static clib_error_t *
+det44_map_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip4_address_t in_addr, out_addr;
+ u32 in_plen, out_plen;
+ int is_add = 1, rv;
+ clib_error_t *error = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat
+ (line_input, "in %U/%u", unformat_ip4_address, &in_addr, &in_plen))
+ ;
+ else
+ if (unformat
+ (line_input, "out %U/%u", unformat_ip4_address, &out_addr,
+ &out_plen))
+ ;
+ else if (unformat (line_input, "del"))
+ is_add = 0;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ rv = snat_det_add_map (&in_addr, (u8) in_plen, &out_addr, (u8) out_plen,
+ is_add);
+
+ if (rv)
+ {
+ error = clib_error_return (0, "snat_det_add_map return %d", rv);
+ goto done;
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+det44_show_mappings_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ det44_main_t *dm = &det44_main;
+ snat_det_map_t *mp;
+ vlib_cli_output (vm, "NAT44 deterministic mappings:");
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps,
+ ({
+ vlib_cli_output (vm, " in %U/%d out %U/%d\n",
+ format_ip4_address, &mp->in_addr, mp->in_plen,
+ format_ip4_address, &mp->out_addr, mp->out_plen);
+ vlib_cli_output (vm, " outside address sharing ratio: %d\n",
+ mp->sharing_ratio);
+ vlib_cli_output (vm, " number of ports per inside host: %d\n",
+ mp->ports_per_host);
+ vlib_cli_output (vm, " sessions number: %d\n", mp->ses_num);
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+static clib_error_t *
+det44_forward_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip4_address_t in_addr, out_addr;
+ u16 lo_port;
+ snat_det_map_t *mp;
+ clib_error_t *error = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U", unformat_ip4_address, &in_addr))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ mp = snat_det_map_by_user (&in_addr);
+ if (!mp)
+ vlib_cli_output (vm, "no match");
+ else
+ {
+ snat_det_forward (mp, &in_addr, &out_addr, &lo_port);
+ vlib_cli_output (vm, "%U:<%d-%d>", format_ip4_address, &out_addr,
+ lo_port, lo_port + mp->ports_per_host - 1);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+det44_reverse_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip4_address_t in_addr, out_addr;
+ clib_error_t *error = 0;
+ snat_det_map_t *mp;
+ u32 out_port;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat
+ (line_input, "%U:%d", unformat_ip4_address, &out_addr, &out_port))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (out_port < 1024 || out_port > 65535)
+ {
+ error = clib_error_return (0, "wrong port, must be <1024-65535>");
+ goto done;
+ }
+
+ mp = snat_det_map_by_out (&out_addr);
+ if (!mp)
+ vlib_cli_output (vm, "no match");
+ else
+ {
+ snat_det_reverse (mp, &out_addr, (u16) out_port, &in_addr);
+ vlib_cli_output (vm, "%U", format_ip4_address, &in_addr);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+det44_show_sessions_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ det44_main_t *dm = &det44_main;
+ snat_det_session_t *ses;
+ snat_det_map_t *mp;
+ vlib_cli_output (vm, "NAT44 deterministic sessions:");
+ /* *INDENT-OFF* */
+ pool_foreach (mp, dm->det_maps,
+ ({
+ int i;
+ vec_foreach_index (i, mp->sessions)
+ {
+ ses = vec_elt_at_index (mp->sessions, i);
+ if (ses->in_port)
+ vlib_cli_output (vm, " %U", format_det_map_ses, mp, ses, &i);
+ }
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+static clib_error_t *
+det44_close_session_out_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip4_address_t out_addr, ext_addr, in_addr;
+ u32 out_port, ext_port;
+ snat_det_map_t *mp;
+ snat_det_session_t *ses;
+ snat_det_out_key_t key;
+ clib_error_t *error = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U:%d %U:%d",
+ unformat_ip4_address, &out_addr, &out_port,
+ unformat_ip4_address, &ext_addr, &ext_port))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ unformat_free (line_input);
+
+ mp = snat_det_map_by_out (&out_addr);
+ if (!mp)
+ vlib_cli_output (vm, "no match");
+ else
+ {
+ snat_det_reverse (mp, &ext_addr, (u16) out_port, &in_addr);
+ key.ext_host_addr = out_addr;
+ key.ext_host_port = ntohs ((u16) ext_port);
+ key.out_port = ntohs ((u16) out_port);
+ ses = snat_det_get_ses_by_out (mp, &out_addr, key.as_u64);
+ if (!ses)
+ vlib_cli_output (vm, "no match");
+ else
+ snat_det_ses_close (mp, ses);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+det44_close_session_in_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ ip4_address_t in_addr, ext_addr;
+ u32 in_port, ext_port;
+ snat_det_map_t *mp;
+ snat_det_session_t *ses;
+ snat_det_out_key_t key;
+ clib_error_t *error = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U:%d %U:%d",
+ unformat_ip4_address, &in_addr, &in_port,
+ unformat_ip4_address, &ext_addr, &ext_port))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ unformat_free (line_input);
+
+ mp = snat_det_map_by_user (&in_addr);
+ if (!mp)
+ vlib_cli_output (vm, "no match");
+ else
+ {
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = ntohs ((u16) ext_port);
+ ses =
+ snat_det_find_ses_by_in (mp, &in_addr, ntohs ((u16) in_port), key);
+ if (!ses)
+ vlib_cli_output (vm, "no match");
+ else
+ snat_det_ses_close (mp, ses);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+det44_set_timeouts_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ nat_timeouts_t timeouts = { 0 };
+ clib_error_t *error = 0;
+ u8 reset = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "udp %u", &timeouts.udp));
+ else if (unformat (line_input, "tcp established %u",
+ &timeouts.tcp.established));
+ else if (unformat (line_input, "tcp transitory %u",
+ &timeouts.tcp.transitory));
+ else if (unformat (line_input, "icmp %u", &timeouts.icmp));
+ else if (unformat (line_input, "reset"))
+ reset = 1;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ if (!reset)
+ {
+ if (det44_set_timeouts (&timeouts))
+ {
+ error = clib_error_return (0, "error configuring timeouts");
+ }
+ }
+ else
+ det44_reset_timeouts ();
+done:
+ unformat_free (line_input);
+ return error;
+}
+
+static clib_error_t *
+det44_show_timeouts_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ nat_timeouts_t timeouts;
+ timeouts = det44_get_timeouts ();
+ vlib_cli_output (vm, "udp timeout: %dsec", timeouts.udp);
+ vlib_cli_output (vm, "tcp established timeout: %dsec",
+ timeouts.tcp.established);
+ vlib_cli_output (vm, "tcp transitory timeout: %dsec",
+ timeouts.tcp.transitory);
+ vlib_cli_output (vm, "icmp timeout: %dsec", timeouts.icmp);
+ return 0;
+}
+
+static clib_error_t *
+det44_plugin_enable_disable_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 enable = 0, is_set = 0;
+ clib_error_t *error = 0;
+ det44_config_t c = { 0 };
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (!is_set && unformat (line_input, "enable"))
+ {
+ unformat (line_input, "inside vrf %u", &c.inside_vrf_id);
+ unformat (line_input, "outside vrf %u", &c.outside_vrf_id);
+ enable = 1;
+ }
+ else if (!is_set && unformat (line_input, "disable"));
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ is_set = 1;
+ }
+
+ if (enable)
+ {
+ if (det44_plugin_enable (c))
+ error = clib_error_return (0, "plugin enable failed");
+ }
+ else
+ {
+ if (det44_plugin_disable ())
+ error = clib_error_return (0, "plugin disable failed");
+ }
+done:
+ unformat_free (line_input);
+ return error;
+}
+
+typedef struct
+{
+ u32 sw_if_index;
+ u8 is_inside;
+} sw_if_indices_t;
+
+static clib_error_t *
+det44_feature_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ sw_if_indices_t *sw_if_indices = 0, *p, e;
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
+ u8 is_del = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "inside %U", unformat_vnet_sw_interface,
+ vnm, &e.sw_if_index))
+ {
+ e.is_inside = 1;
+ vec_add1 (sw_if_indices, e);
+ }
+ else if (unformat (line_input, "outside %U", unformat_vnet_sw_interface,
+ vnm, &e.sw_if_index))
+ {
+ e.is_inside = 0;
+ vec_add1 (sw_if_indices, e);
+ }
+ else if (unformat (line_input, "del"))
+ is_del = 1;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ /* *INDENT-OFF* */
+ vec_foreach (p, sw_if_indices)
+ {
+ if (det44_interface_add_del (p->sw_if_index, p->is_inside, is_del))
+ {
+ error = clib_error_return (0, "%s %s %U failed",
+ is_del ? "del" : "add",
+ p->is_inside ? "inside" : "outside",
+ format_vnet_sw_if_index_name,
+ vnm, p->sw_if_index);
+ break;
+ }
+ }
+ /* *INDENT-ON* */
+done:
+ unformat_free (line_input);
+ vec_free (sw_if_indices);
+ return error;
+}
+
+static clib_error_t *
+det44_show_interfaces_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ det44_main_t *dm = &det44_main;
+ det44_interface_t *i;
+ vlib_cli_output (vm, "DET44 interfaces:");
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces,
+ ({
+ vlib_cli_output (vm, " %U %s", format_vnet_sw_if_index_name, vnm,
+ i->sw_if_index,
+ (det44_interface_is_inside(i) &&
+ det44_interface_is_outside(i)) ? "in out" :
+ (det44_interface_is_inside(i) ? "in" : "out"));
+ }));
+ /* *INDENT-ON* */
+ return 0;
+}
+
+/* *INDENT-OFF* */
+/*?
+ * @cliexpar
+ * @cliexstart{det44 add}
+ * Create bijective mapping of inside address to outside address and port range
+ * pairs, with the purpose of enabling DET44 to reduce logging in CGN
+ * deployments.
+ * To create mapping between inside network 10.0.0.0/18 and
+ * outside network 1.1.1.0/30 use:
+ * # vpp# det44 add in 10.0.0.0/18 out 1.1.1.0/30
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_map_command, static) = {
+ .path = "det44 add",
+ .short_help = "det44 add in <addr>/<plen> out <addr>/<plen> [del]",
+ .function = det44_map_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexpstart{show det44 mappings}
+ * Show DET44 mappings
+ * vpp# show det44 mappings
+ * DET44 mappings:
+ * in 10.0.0.0/24 out 1.1.1.1/32
+ * outside address sharing ratio: 256
+ * number of ports per inside host: 252
+ * sessions number: 0
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_show_mappings_command, static) = {
+ .path = "show det44 mappings",
+ .short_help = "show det44 mappings",
+ .function = det44_show_mappings_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{det44 forward}
+ * Return outside address and port range from inside address for DET44.
+ * To obtain outside address and port of inside host use:
+ * vpp# det44 forward 10.0.0.2
+ * 1.1.1.0:<1054-1068>
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_forward_command, static) = {
+ .path = "det44 forward",
+ .short_help = "det44 forward <addr>",
+ .function = det44_forward_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{det44 reverse}
+ * Return inside address from outside address and port for DET44.
+ * To obtain inside host address from outside address and port use:
+ * #vpp det44 reverse 1.1.1.1:1276
+ * 10.0.16.16
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_reverse_command, static) = {
+ .path = "det44 reverse",
+ .short_help = "det44 reverse <addr>:<port>",
+ .function = det44_reverse_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{show det44 sessions}
+ * Show DET44 sessions.
+ * vpp# show det44 sessions
+ * DET44 sessions:
+ * in 10.0.0.3:3005 out 1.1.1.2:1146 external host 172.16.1.2:3006 state: udp-active expire: 306
+ * in 10.0.0.3:3000 out 1.1.1.2:1141 external host 172.16.1.2:3001 state: udp-active expire: 306
+ * in 10.0.0.4:3005 out 1.1.1.2:1177 external host 172.16.1.2:3006 state: udp-active expire: 306
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_show_sessions_command, static) = {
+ .path = "show det44 sessions",
+ .short_help = "show det44 sessions",
+ .function = det44_show_sessions_command_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{det44 close session out}
+ * Close session using outside ip address and port
+ * and external ip address and port, use:
+ * vpp# det44 close session out 1.1.1.1:1276 2.2.2.2:2387
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_close_sesion_out_command, static) = {
+ .path = "det44 close session out",
+ .short_help = "det44 close session out "
+ "<out_addr>:<out_port> <ext_addr>:<ext_port>",
+ .function = det44_close_session_out_fn,
+};
+
+/*?
+ * @cliexpar
+ * @cliexstart{det44 deterministic close session in}
+ * Close session using inside ip address and port
+ * and external ip address and port, use:
+ * vpp# det44 close session in 3.3.3.3:3487 2.2.2.2:2387
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_close_session_in_command, static) = {
+ .path = "det44 close session in",
+ .short_help = "det44 close session in "
+ "<in_addr>:<in_port> <ext_addr>:<ext_port>",
+ .function = det44_close_session_in_fn,
+};
+/* *INDENT-ON* */
+
+/*?
+ * @cliexpar
+ * @cliexstart{set det44 timeout}
+ * Set values of timeouts for DET44 sessions (in seconds), use:
+ * vpp# set det44 timeouts udp 120 tcp established 7500 tcp transitory 250 icmp 90
+ * To reset default values use:
+ * vpp# set det44 timeouts reset
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_set_timeouts_command, static) =
+{
+.path = "set det44 timeouts",.short_help =
+ "set det44 timeouts <[udp <sec>] [tcp established <sec>] "
+ "[tcp transitory <sec>] [icmp <sec>]|reset>",.function =
+ det44_set_timeouts_command_fn,};
+
+/*?
+ * @cliexpar
+ * @cliexstart{show det44 timeouts}
+ * Show values of timeouts for DET44 sessions.
+ * vpp# show det44 timeouts
+ * udp timeout: 300sec
+ * tcp-established timeout: 7440sec
+ * tcp-transitory timeout: 240sec
+ * icmp timeout: 60sec
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_show_timeouts_command, static) =
+{
+.path = "show det44 timeouts",.short_help =
+ "show det44 timeouts",.function = det44_show_timeouts_command_fn,};
+
+/*?
+ * @cliexpar
+ * @cliexstart{det44 plugin}
+ * Enable/disable DET44 plugin.
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_plugin_enable_disable_command, static) =
+{
+.path = "det44 plugin",.short_help =
+ "det44 plugin <enable [inside vrf] [outside vrf]|disable>",.function =
+ det44_plugin_enable_disable_command_fn,};
+
+/*?
+ * @cliexpar
+ * @cliexstart{set interface det44}
+ * Enable/disable DET44 feature on the interface.
+ * To enable DET44 feature with local network interface use:
+ * vpp# set interface det44 inside GigabitEthernet0/8/0
+ * To enable DET44 feature with external network interface use:
+ * vpp# set interface det44 outside GigabitEthernet0/a/0
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_feature_command, static) =
+{
+.path = "set interface det44",.short_help =
+ "set interface det44 inside <intfc> outside <intfc> [del]",.function =
+ det44_feature_command_fn,};
+
+/*?
+ * @cliexpar
+ * @cliexstart{show det44 interfaces}
+ * Show interfaces with DET44 feature.
+ * vpp# show det44 interfaces
+ * DET44 interfaces:
+ * GigabitEthernet0/8/0 in
+ * GigabitEthernet0/a/0 out
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (det44_show_interfaces_command, static) =
+{
+.path = "show det44 interfaces",.short_help =
+ "show det44 interfaces",.function = det44_show_interfaces_command_fn,};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
/*
- * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
/**
* @file
- * @brief Deterministic/CGN NAT44 inside to outside network translation
+ * @brief Deterministic NAT (CGN) inside to outside translation
*/
#include <vlib/vlib.h>
#include <vnet/fib/ip4_fib.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>
-#include <nat/nat.h>
-#include <nat/nat_det.h>
-#include <nat/nat_inlines.h>
+
+#include <nat/det44/det44.h>
+#include <nat/det44/det44_inlines.h>
+
+#include <nat/lib/lib.h>
+#include <nat/lib/inlines.h>
#include <nat/lib/nat_inlines.h>
+typedef enum
+{
+ DET44_IN2OUT_NEXT_LOOKUP,
+ DET44_IN2OUT_NEXT_DROP,
+ DET44_IN2OUT_NEXT_ICMP_ERROR,
+ DET44_IN2OUT_N_NEXT,
+} det44_in2out_next_t;
+
typedef struct
{
u32 sw_if_index;
u32 next_index;
u32 session_index;
-} nat_det_in2out_trace_t;
+} det44_in2out_trace_t;
-typedef enum
-{
- NAT_DET_IN2OUT_NEXT_LOOKUP,
- NAT_DET_IN2OUT_NEXT_DROP,
- NAT_DET_IN2OUT_NEXT_ICMP_ERROR,
- NAT_DET_IN2OUT_N_NEXT,
-} nat_det_in2out_next_t;
-
-#define foreach_nat_det_in2out_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(NO_TRANSLATION, "No translation") \
-_(BAD_ICMP_TYPE, "unsupported ICMP type") \
-_(OUT_OF_PORTS, "Out of ports") \
+#define foreach_det44_in2out_error \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
+_(NO_TRANSLATION, "No translation") \
+_(BAD_ICMP_TYPE, "unsupported ICMP type") \
+_(OUT_OF_PORTS, "Out of ports") \
_(IN2OUT_PACKETS, "Good in2out packets processed")
typedef enum
{
-#define _(sym,str) NAT_DET_IN2OUT_ERROR_##sym,
- foreach_nat_det_in2out_error
+#define _(sym,str) DET44_IN2OUT_ERROR_##sym,
+ foreach_det44_in2out_error
#undef _
- NAT_DET_IN2OUT_N_ERROR,
-} nat_det_in2out_error_t;
+ DET44_IN2OUT_N_ERROR,
+} det44_in2out_error_t;
-static char *nat_det_in2out_error_strings[] = {
+static char *det44_in2out_error_strings[] = {
#define _(sym,string) string,
- foreach_nat_det_in2out_error
+ foreach_det44_in2out_error
#undef _
};
static u8 *
-format_nat_det_in2out_trace (u8 * s, va_list * args)
+format_det44_in2out_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- nat_det_in2out_trace_t *t = va_arg (*args, nat_det_in2out_trace_t *);
+ det44_in2out_trace_t *t = va_arg (*args, det44_in2out_trace_t *);
- s = format (s, "NAT_DET_IN2OUT: sw_if_index %d, next index %d, session %d",
+ s = format (s, "DET44_IN2OUT: sw_if_index %d, next index %d, session %d",
t->sw_if_index, t->next_index, t->session_index);
return s;
* Get address and port values to be used for ICMP packet translation
* and create session if needed
*
- * @param[in,out] sm NAT main
* @param[in,out] node NAT node runtime
* @param[in] thread_index thread index
* @param[in,out] b0 buffer containing packet to be translated
* @param e optional parameter
*/
u32
-icmp_match_in2out_det (snat_main_t * sm, vlib_node_runtime_t * node,
+icmp_match_in2out_det (vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
ip4_header_t * ip0, ip4_address_t * addr,
u16 * port, u32 * fib_index,
nat_protocol_t * proto, void *d, void *e,
u8 * dont_translate)
{
+ det44_main_t *dm = &det44_main;
vlib_main_t *vm = vlib_get_main ();
icmp46_header_t *icmp0;
u32 sw_if_index0;
ip4_header_t *inner_ip0;
void *l4_header = 0;
icmp46_header_t *inner_icmp0;
- snat_det_map_t *dm0 = 0;
+ snat_det_map_t *mp0 = 0;
ip4_address_t new_addr0;
u16 lo_port0, i0;
snat_det_session_t *ses0 = 0;
in_port = ((tcp_udp_header_t *) l4_header)->dst_port;
break;
default:
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
}
- dm0 = snat_det_map_by_user (sm, &in_addr);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&in_addr);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &in_addr);
- if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP,
- rx_fib_index0)))
+ if (PREDICT_FALSE (det44_translate (node, sw_if_index0, ip0,
+ IP_PROTOCOL_ICMP, rx_fib_index0)))
{
*dont_translate = 1;
goto out;
}
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto out;
}
- snat_det_forward (dm0, &in_addr, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &in_addr, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = 0;
- ses0 = snat_det_find_ses_by_in (dm0, &in_addr, in_port, key0);
+ ses0 = snat_det_find_ses_by_in (mp0, &in_addr, in_port, key0);
if (PREDICT_FALSE (!ses0))
{
- if (PREDICT_FALSE (snat_not_translate_fast (sm, node, sw_if_index0, ip0,
- IP_PROTOCOL_ICMP,
- rx_fib_index0)))
+ if (PREDICT_FALSE (det44_translate (node, sw_if_index0, ip0,
+ IP_PROTOCOL_ICMP, rx_fib_index0)))
{
*dont_translate = 1;
goto out;
}
if (icmp0->type != ICMP4_echo_request)
{
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(echo0->identifier)) %
- dm0->ports_per_host));
+ mp0->ports_per_host));
- if (snat_det_get_ses_by_out (dm0, &in_addr, key0.as_u64))
+ if (snat_det_get_ses_by_out (mp0, &in_addr, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0,
+ snat_det_ses_create (thread_index, mp0,
&in_addr, echo0->identifier, &key0);
break;
}
if (PREDICT_FALSE (!ses0))
{
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_OUT_OF_PORTS];
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_OUT_OF_PORTS];
goto out;
}
}
&& !icmp_type_is_error_message (vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_BAD_ICMP_TYPE];
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_BAD_ICMP_TYPE];
+ next0 = DET44_IN2OUT_NEXT_DROP;
goto out;
}
u32 now = (u32) vlib_time_now (vm);
- ses0->state = SNAT_SESSION_ICMP_ACTIVE;
- ses0->expire = now + sm->icmp_timeout;
+ ses0->state = DET44_SESSION_ICMP_ACTIVE;
+ ses0->expire = now + dm->timeouts.icmp;
out:
*proto = protocol;
if (ses0)
{
*addr = new_addr0;
- *fib_index = sm->outside_fib_index;
+ *fib_index = dm->outside_fib_index;
*port = ses0->out.out_port;
}
if (d)
*(snat_det_session_t **) d = ses0;
if (e)
- *(snat_det_map_t **) e = dm0;
+ *(snat_det_map_t **) e = mp0;
+ return next0;
+}
+#endif
+
+#ifndef CLIB_MARCH_VARIANT
+u32
+det44_icmp_in2out (vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ icmp46_header_t * icmp0,
+ u32 sw_if_index0,
+ u32 rx_fib_index0,
+ vlib_node_runtime_t * node,
+ u32 next0, u32 thread_index, void *d, void *e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ u16 old_id0, new_id0, port, checksum0, old_checksum0, new_checksum0;
+ u32 new_addr0, old_addr0, next0_tmp, fib_index;
+ icmp_echo_header_t *echo0, *inner_echo0;
+ icmp46_header_t *inner_icmp0;
+ ip4_header_t *inner_ip0;
+ ip4_address_t addr;
+ void *l4_header;
+ u8 dont_translate;
+ ip_csum_t sum0;
+ nat_protocol_t protocol;
+
+ echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ next0_tmp = icmp_match_in2out_det (node, thread_index, b0, ip0,
+ &addr, &port, &fib_index, &protocol,
+ d, e, &dont_translate);
+ if (next0_tmp != ~0)
+ next0 = next0_tmp;
+ if (next0 == DET44_IN2OUT_NEXT_DROP || dont_translate)
+ goto out;
+
+ if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
+ {
+ sum0 =
+ ip_incremental_checksum_buffer (vm, b0,
+ (u8 *) icmp0 -
+ (u8 *) vlib_buffer_get_current (b0),
+ ntohs (ip0->length) -
+ ip4_header_bytes (ip0), 0);
+ checksum0 = ~ip_csum_fold (sum0);
+ if (PREDICT_FALSE (checksum0 != 0 && checksum0 != 0xffff))
+ {
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+ }
+
+ old_addr0 = ip0->src_address.as_u32;
+ new_addr0 = ip0->src_address.as_u32 = addr.as_u32;
+
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ src_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
+
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
+
+ if (!icmp_type_is_error_message (icmp0->type))
+ {
+ new_id0 = port;
+ if (PREDICT_FALSE (new_id0 != echo0->identifier))
+ {
+ old_id0 = echo0->identifier;
+ new_id0 = port;
+ echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ else
+ {
+ inner_ip0 = (ip4_header_t *) (echo0 + 1);
+ l4_header = ip4_next_header (inner_ip0);
+
+ if (!ip4_header_checksum_is_valid (inner_ip0))
+ {
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ goto out;
+ }
+
+ /* update inner destination IP address */
+ old_addr0 = inner_ip0->dst_address.as_u32;
+ inner_ip0->dst_address = addr;
+ new_addr0 = inner_ip0->dst_address.as_u32;
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ /* update inner IP header checksum */
+ old_checksum0 = inner_ip0->checksum;
+ sum0 = inner_ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
+ inner_ip0->checksum = ip_csum_fold (sum0);
+ new_checksum0 = inner_ip0->checksum;
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_checksum0, new_checksum0, ip4_header_t,
+ checksum);
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ switch (protocol)
+ {
+ case NAT_PROTOCOL_ICMP:
+ inner_icmp0 = (icmp46_header_t *) l4_header;
+ inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
+
+ old_id0 = inner_echo0->identifier;
+ new_id0 = port;
+ inner_echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ old_id0 = ((tcp_udp_header_t *) l4_header)->dst_port;
+ new_id0 = port;
+ ((tcp_udp_header_t *) l4_header)->dst_port = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_id0, new_id0, tcp_udp_header_t,
+ dst_port);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ default:
+ ASSERT (0);
+ }
+ }
+ }
+
+ if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
+out:
return next0;
}
#endif
-VLIB_NODE_FN (snat_det_in2out_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (det44_in2out_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
- nat_det_in2out_next_t next_index;
+ det44_in2out_next_t next_index;
u32 pkts_processed = 0;
- snat_main_t *sm = &snat_main;
+ det44_main_t *dm = &det44_main;
u32 now = (u32) vlib_time_now (vm);
u32 thread_index = vm->thread_index;
tcp_header_t *tcp0, *tcp1;
u32 proto0, proto1;
snat_det_out_key_t key0, key1;
- snat_det_map_t *dm0, *dm1;
+ snat_det_map_t *mp0, *mp1;
snat_det_session_t *ses0 = 0, *ses1 = 0;
u32 rx_fib_index0, rx_fib_index1;
icmp46_header_t *icmp0, *icmp1;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
- next0 = NAT_DET_IN2OUT_NEXT_LOOKUP;
- next1 = NAT_DET_IN2OUT_NEXT_LOOKUP;
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
+ next1 = DET44_IN2OUT_NEXT_LOOKUP;
ip0 = vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace0;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ // TODO:
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace0;
}
- dm0 = snat_det_map_by_user (sm, &ip0->src_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace0;
}
- snat_det_forward (dm0, &ip0->src_address, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = tcp0->dst;
ses0 =
- snat_det_find_ses_by_in (dm0, &ip0->src_address, tcp0->src, key0);
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(tcp0->src)) %
- dm0->
+ mp0->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm0, &ip0->src_address, key0.as_u64))
+ (mp0, &ip0->src_address, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0, &ip0->src_address,
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
tcp0->src, &key0);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace0;
}
}
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_SYN_SENT)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses0->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp0->flags == 0
- && ses0->state == SNAT_SESSION_UNKNOWN)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
else
{
- ses0->state = SNAT_SESSION_UDP_ACTIVE;
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp0->checksum))
{
switch (ses0->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses0->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses0->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
ip1 = vlib_buffer_get_current (b1);
udp1 = ip4_next_header (ip1);
icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next1 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace1;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
icmp1 = (icmp46_header_t *) udp1;
- next1 = icmp_in2out (sm, b1, ip1, icmp1, sw_if_index1,
- rx_fib_index1, node, next1, thread_index,
- &ses1, &dm1);
+ next1 = det44_icmp_in2out (b1, ip1, icmp1, sw_if_index1,
+ rx_fib_index1, node, next1,
+ thread_index, &ses1, &mp1);
goto trace1;
}
- dm1 = snat_det_map_by_user (sm, &ip1->src_address);
- if (PREDICT_FALSE (!dm1))
+ mp1 = snat_det_map_by_user (&ip1->src_address);
+ if (PREDICT_FALSE (!mp1))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next1 = NAT_DET_IN2OUT_NEXT_DROP;
- b1->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next1 = DET44_IN2OUT_NEXT_DROP;
+ b1->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace1;
}
- snat_det_forward (dm1, &ip1->src_address, &new_addr1, &lo_port1);
+ snat_det_forward (mp1, &ip1->src_address, &new_addr1, &lo_port1);
key1.ext_host_addr = ip1->dst_address;
key1.ext_host_port = tcp1->dst;
ses1 =
- snat_det_find_ses_by_in (dm1, &ip1->src_address, tcp1->src, key1);
+ snat_det_find_ses_by_in (mp1, &ip1->src_address, tcp1->src, key1);
if (PREDICT_FALSE (!ses1))
{
- for (i1 = 0; i1 < dm1->ports_per_host; i1++)
+ for (i1 = 0; i1 < mp1->ports_per_host; i1++)
{
key1.out_port = clib_host_to_net_u16 (lo_port1 +
((i1 +
clib_net_to_host_u16
(tcp1->src)) %
- dm1->
+ mp1->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm1, &ip1->src_address, key1.as_u64))
+ (mp1, &ip1->src_address, key1.as_u64))
continue;
ses1 =
- snat_det_ses_create (thread_index, dm1, &ip1->src_address,
+ snat_det_ses_create (thread_index, mp1, &ip1->src_address,
tcp1->src, &key1);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next1 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next1 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace1;
}
}
old_addr1.as_u32 = ip1->src_address.as_u32;
ip1->src_address.as_u32 = new_addr1.as_u32;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum1 = ip1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
{
if (tcp1->flags & TCP_FLAG_SYN)
- ses1->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses1->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == SNAT_SESSION_TCP_SYN_SENT)
- ses1->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses1->state == DET44_SESSION_TCP_SYN_SENT)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses1->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses1->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm1, ses1);
+ && ses1->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp1, ses1);
else if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses1->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses1->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses1->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp1->flags == 0
- && ses1->state == SNAT_SESSION_UNKNOWN)
- ses1->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses1->state == DET44_SESSION_UNKNOWN)
+ ses1->state = DET44_SESSION_TCP_ESTABLISHED;
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
sum1 = ip_csum_update (sum1, old_port1, new_port1,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp1, &sum1);
+ mss_clamping (dm->mss_clamping, tcp1, &sum1);
tcp1->checksum = ip_csum_fold (sum1);
}
else
{
- ses1->state = SNAT_SESSION_UDP_ACTIVE;
+ ses1->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp1->checksum))
{
switch (ses1->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses1->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses1->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses1->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses1->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses1->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses1->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b1->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b1, sizeof (*t));
t->sw_if_index = sw_if_index1;
t->next_index = next1;
t->session_index = ~0;
if (ses1)
- t->session_index = ses1 - dm1->sessions;
+ t->session_index = ses1 - mp1->sessions;
}
- pkts_processed += next1 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next1 != DET44_IN2OUT_NEXT_DROP;
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
tcp_header_t *tcp0;
u32 proto0;
snat_det_out_key_t key0;
- snat_det_map_t *dm0;
+ snat_det_map_t *mp0;
snat_det_session_t *ses0 = 0;
u32 rx_fib_index0;
icmp46_header_t *icmp0;
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- next0 = NAT_DET_IN2OUT_NEXT_LOOKUP;
+ next0 = DET44_IN2OUT_NEXT_LOOKUP;
ip0 = vlib_buffer_get_current (b0);
udp0 = ip4_next_header (ip0);
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace00;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_in2out (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ next0 = det44_icmp_in2out (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace00;
}
- dm0 = snat_det_map_by_user (sm, &ip0->src_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_user (&ip0->src_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("no match for internal host %U",
- format_ip4_address, &ip0->src_address);
- next0 = NAT_DET_IN2OUT_NEXT_DROP;
- b0->error = node->errors[NAT_DET_IN2OUT_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match for internal host %U",
+ format_ip4_address, &ip0->src_address);
+ next0 = DET44_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[DET44_IN2OUT_ERROR_NO_TRANSLATION];
goto trace00;
}
- snat_det_forward (dm0, &ip0->src_address, &new_addr0, &lo_port0);
+ snat_det_forward (mp0, &ip0->src_address, &new_addr0, &lo_port0);
key0.ext_host_addr = ip0->dst_address;
key0.ext_host_port = tcp0->dst;
ses0 =
- snat_det_find_ses_by_in (dm0, &ip0->src_address, tcp0->src, key0);
+ snat_det_find_ses_by_in (mp0, &ip0->src_address, tcp0->src, key0);
if (PREDICT_FALSE (!ses0))
{
- for (i0 = 0; i0 < dm0->ports_per_host; i0++)
+ for (i0 = 0; i0 < mp0->ports_per_host; i0++)
{
key0.out_port = clib_host_to_net_u16 (lo_port0 +
((i0 +
clib_net_to_host_u16
(tcp0->src)) %
- dm0->
+ mp0->
ports_per_host));
if (snat_det_get_ses_by_out
- (dm0, &ip0->src_address, key0.as_u64))
+ (mp0, &ip0->src_address, key0.as_u64))
continue;
ses0 =
- snat_det_ses_create (thread_index, dm0, &ip0->src_address,
+ snat_det_ses_create (thread_index, mp0, &ip0->src_address,
tcp0->src, &key0);
break;
}
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_destination_unreachable_host,
0);
- next0 = NAT_DET_IN2OUT_NEXT_ICMP_ERROR;
+ next0 = DET44_IN2OUT_NEXT_ICMP_ERROR;
goto trace00;
}
}
old_addr0.as_u32 = ip0->src_address.as_u32;
ip0->src_address.as_u32 = new_addr0.as_u32;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->outside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->outside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_SYN)
- ses0->state = SNAT_SESSION_TCP_SYN_SENT;
+ ses0->state = DET44_SESSION_TCP_SYN_SENT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_SYN_SENT)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_TCP_SYN_SENT)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_FIN_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_FIN_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_FIN_WAIT)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_FIN_WAIT)
+ snat_det_ses_close (mp0, ses0);
else if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_CLOSE_WAIT)
- ses0->state = SNAT_SESSION_TCP_LAST_ACK;
+ && ses0->state == DET44_SESSION_TCP_CLOSE_WAIT)
+ ses0->state = DET44_SESSION_TCP_LAST_ACK;
else if (tcp0->flags == 0
- && ses0->state == SNAT_SESSION_UNKNOWN)
- ses0->state = SNAT_SESSION_TCP_ESTABLISHED;
+ && ses0->state == DET44_SESSION_UNKNOWN)
+ ses0->state = DET44_SESSION_TCP_ESTABLISHED;
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
sum0 = ip_csum_update (sum0, old_port0, new_port0,
ip4_header_t /* cheat */ ,
length /* changed member */ );
- mss_clamping (sm->mss_clamping, tcp0, &sum0);
+ mss_clamping (dm->mss_clamping, tcp0, &sum0);
tcp0->checksum = ip_csum_fold (sum0);
}
else
{
- ses0->state = SNAT_SESSION_UDP_ACTIVE;
+ ses0->state = DET44_SESSION_UDP_ACTIVE;
if (PREDICT_FALSE (udp0->checksum))
{
switch (ses0->state)
{
- case SNAT_SESSION_UDP_ACTIVE:
- ses0->expire = now + sm->udp_timeout;
+ case DET44_SESSION_UDP_ACTIVE:
+ ses0->expire = now + dm->timeouts.udp;
break;
- case SNAT_SESSION_TCP_SYN_SENT:
- case SNAT_SESSION_TCP_FIN_WAIT:
- case SNAT_SESSION_TCP_CLOSE_WAIT:
- case SNAT_SESSION_TCP_LAST_ACK:
- ses0->expire = now + sm->tcp_transitory_timeout;
+ case DET44_SESSION_TCP_SYN_SENT:
+ case DET44_SESSION_TCP_FIN_WAIT:
+ case DET44_SESSION_TCP_CLOSE_WAIT:
+ case DET44_SESSION_TCP_LAST_ACK:
+ ses0->expire = now + dm->timeouts.tcp.transitory;
break;
- case SNAT_SESSION_TCP_ESTABLISHED:
- ses0->expire = now + sm->tcp_established_timeout;
+ case DET44_SESSION_TCP_ESTABLISHED:
+ ses0->expire = now + dm->timeouts.tcp.established;
break;
}
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_in2out_trace_t *t =
+ det44_in2out_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_IN2OUT_NEXT_DROP;
+ pkts_processed += next0 != DET44_IN2OUT_NEXT_DROP;
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, sm->det_in2out_node_index,
- NAT_DET_IN2OUT_ERROR_IN2OUT_PACKETS,
+ vlib_node_increment_counter (vm, dm->in2out_node_index,
+ DET44_IN2OUT_ERROR_IN2OUT_PACKETS,
pkts_processed);
return frame->n_vectors;
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_det_in2out_node) = {
- .name = "nat44-det-in2out",
+VLIB_REGISTER_NODE (det44_in2out_node) = {
+ .name = "det44-in2out",
.vector_size = sizeof (u32),
- .format_trace = format_nat_det_in2out_trace,
+ .format_trace = format_det44_in2out_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(nat_det_in2out_error_strings),
- .error_strings = nat_det_in2out_error_strings,
- .n_next_nodes = NAT_DET_IN2OUT_N_NEXT,
+ .n_errors = ARRAY_LEN(det44_in2out_error_strings),
+ .error_strings = det44_in2out_error_strings,
+ .runtime_data_bytes = sizeof (det44_runtime_t),
+ .n_next_nodes = DET44_IN2OUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes = {
- [NAT_DET_IN2OUT_NEXT_DROP] = "error-drop",
- [NAT_DET_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_DET_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [DET44_IN2OUT_NEXT_DROP] = "error-drop",
+ [DET44_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ [DET44_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
};
/* *INDENT-ON* */
--- /dev/null
+/*
+ * det44.h - deterministic NAT definitions
+ *
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @brief Deterministic NAT (CGN) inlines
+ */
+
+#ifndef __included_det44_inlines_h__
+#define __included_det44_inlines_h__
+
+static_always_inline int
+det44_is_interface_addr (vlib_node_runtime_t * node,
+ u32 sw_if_index0, u32 ip4_addr)
+{
+ det44_runtime_t *rt = (det44_runtime_t *) node->runtime_data;
+ det44_main_t *dm = &det44_main;
+ ip4_address_t *first_int_addr;
+
+ if (PREDICT_FALSE (rt->cached_sw_if_index != sw_if_index0))
+ {
+ first_int_addr = ip4_interface_first_address (dm->ip4_main,
+ sw_if_index0, 0);
+ rt->cached_sw_if_index = sw_if_index0;
+ if (first_int_addr)
+ rt->cached_ip4_address = first_int_addr->as_u32;
+ else
+ rt->cached_ip4_address = 0;
+ }
+ if (PREDICT_FALSE (rt->cached_ip4_address == ip4_addr))
+ return 0;
+ return 1;
+}
+
+/**
+ * @brief Check if packet should be translated
+ *
+ * Packets aimed at outside interface and external address with active session
+ * should be translated.
+ *
+ * @param node NAT runtime data
+ * @param sw_if_index0 index of the inside interface
+ * @param ip0 IPv4 header
+ * @param proto0 NAT protocol
+ * @param rx_fib_index0 RX FIB index
+ *
+ * @returns 0 if packet should be translated otherwise 1
+ */
+static_always_inline int
+det44_translate (vlib_node_runtime_t * node, u32 sw_if_index0,
+ ip4_header_t * ip0, u32 proto0, u32 rx_fib_index0)
+{
+ det44_main_t *dm = &det44_main;
+ fib_node_index_t fei = FIB_NODE_INDEX_INVALID;
+ det44_fib_t *outside_fib;
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_addr = {
+ .ip4.as_u32 = ip0->dst_address.as_u32,
+ }
+ ,
+ };
+
+ /* Don't NAT packet aimed at the interface address */
+ if (PREDICT_FALSE (!det44_is_interface_addr (node, sw_if_index0,
+ ip0->dst_address.as_u32)))
+ {
+ return 1;
+ }
+
+ /* find out if there is outside feature enabled for this destination */
+ fei = fib_table_lookup (rx_fib_index0, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ u32 sw_if_index = fib_entry_get_resolving_interface (fei);
+ if (sw_if_index == ~0)
+ {
+ // TODO: go over use cases
+ /* *INDENT-OFF* */
+ vec_foreach (outside_fib, dm->outside_fibs)
+ {
+ fei = fib_table_lookup (outside_fib->fib_index, &pfx);
+ if (FIB_NODE_INDEX_INVALID != fei)
+ {
+ sw_if_index = fib_entry_get_resolving_interface (fei);
+ if (sw_if_index != ~0)
+ break;
+ }
+ }
+ /* *INDENT-ON* */
+ }
+ if (sw_if_index != ~0)
+ {
+ det44_interface_t *i;
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces, ({
+ /* NAT packet aimed at outside interface */
+ if ((det44_interface_is_outside (i)) && (sw_if_index == i->sw_if_index))
+ return 0;
+ }));
+ /* *INDENT-ON* */
+ }
+ }
+ return 1;
+}
+
+#endif /* __included_det44_inlines_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
/*
- * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
/**
* @file
- * @brief Deterministic/CGN NAT44 outside to inside network translation
+ * @brief Deterministic NAT (CGN) outside to inside translation
*/
#include <vlib/vlib.h>
#include <vnet/fib/ip4_fib.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>
-#include <nat/nat.h>
-#include <nat/nat_det.h>
-#include <nat/nat_inlines.h>
+
+#include <nat/det44/det44.h>
+#include <nat/det44/det44_inlines.h>
+
+#include <nat/lib/lib.h>
+#include <nat/lib/inlines.h>
+#include <nat/lib/nat_inlines.h>
typedef enum
{
- NAT_DET_OUT2IN_NEXT_DROP,
- NAT_DET_OUT2IN_NEXT_LOOKUP,
- NAT_DET_OUT2IN_NEXT_ICMP_ERROR,
- NAT_DET_OUT2IN_N_NEXT,
-} nat_det_out2in_next_t;
+ DET44_OUT2IN_NEXT_DROP,
+ DET44_OUT2IN_NEXT_LOOKUP,
+ DET44_OUT2IN_NEXT_ICMP_ERROR,
+ DET44_OUT2IN_N_NEXT,
+} det44_out2in_next_t;
typedef struct
{
u32 sw_if_index;
u32 next_index;
u32 session_index;
-} nat_det_out2in_trace_t;
+} det44_out2in_trace_t;
-#define foreach_nat_det_out2in_error \
-_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
-_(NO_TRANSLATION, "No translation") \
-_(BAD_ICMP_TYPE, "unsupported ICMP type") \
+#define foreach_det44_out2in_error \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
+_(NO_TRANSLATION, "No translation") \
+_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(OUT2IN_PACKETS, "Good out2in packets processed")
typedef enum
{
-#define _(sym,str) NAT_DET_OUT2IN_ERROR_##sym,
- foreach_nat_det_out2in_error
+#define _(sym,str) DET44_OUT2IN_ERROR_##sym,
+ foreach_det44_out2in_error
#undef _
- SNAT_OUT2IN_N_ERROR,
-} nat_det_out2in_error_t;
+ DET44_OUT2IN_N_ERROR,
+} det44_out2in_error_t;
-static char *nat_det_out2in_error_strings[] = {
+static char *det44_out2in_error_strings[] = {
#define _(sym,string) string,
- foreach_nat_det_out2in_error
+ foreach_det44_out2in_error
#undef _
};
static u8 *
-format_nat_det_out2in_trace (u8 * s, va_list * args)
+format_det44_out2in_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- nat_det_out2in_trace_t *t = va_arg (*args, nat_det_out2in_trace_t *);
+ det44_out2in_trace_t *t = va_arg (*args, det44_out2in_trace_t *);
s =
format (s,
- "NAT_DET_OUT2IN: sw_if_index %d, next index %d, session index %d",
+ "DET44_OUT2IN: sw_if_index %d, next index %d, session index %d",
t->sw_if_index, t->next_index, t->session_index);
return s;
}
* Get address and port values to be used for ICMP packet translation
* and create session if needed
*
- * @param[in,out] sm NAT main
* @param[in,out] node NAT node runtime
* @param[in] thread_index thread index
* @param[in,out] b0 buffer containing packet to be translated
* @param e optional parameter
*/
u32
-icmp_match_out2in_det (snat_main_t * sm, vlib_node_runtime_t * node,
+icmp_match_out2in_det (vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
ip4_header_t * ip0, ip4_address_t * addr,
u16 * port, u32 * fib_index,
nat_protocol_t * proto, void *d, void *e,
u8 * dont_translate)
{
+ det44_main_t *dm = &det44_main;
icmp46_header_t *icmp0;
u32 sw_if_index0;
u8 protocol;
ip4_header_t *inner_ip0;
void *l4_header = 0;
icmp46_header_t *inner_icmp0;
- snat_det_map_t *dm0 = 0;
+ snat_det_map_t *mp0 = 0;
ip4_address_t new_addr0 = { {0} };
snat_det_session_t *ses0 = 0;
ip4_address_t out_addr;
key0.out_port = ((tcp_udp_header_t *) l4_header)->src_port;
break;
default:
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL];
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL];
+ next0 = DET44_OUT2IN_NEXT_DROP;
goto out;
}
}
- dm0 = snat_det_map_by_out (sm, &out_addr);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_out (&out_addr);
+ if (PREDICT_FALSE (!mp0))
{
/* Don't NAT packet aimed at the intfc address */
- if (PREDICT_FALSE (is_interface_addr (sm, node, sw_if_index0,
- ip0->dst_address.as_u32)))
+ if (PREDICT_FALSE (!det44_is_interface_addr (node, sw_if_index0,
+ ip0->dst_address.as_u32)))
{
*dont_translate = 1;
goto out;
}
- nat_log_info ("unknown dst address: %U",
- format_ip4_address, &ip0->dst_address);
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip0->dst_address);
goto out;
}
- snat_det_reverse (dm0, &ip0->dst_address,
+ snat_det_reverse (mp0, &ip0->dst_address,
clib_net_to_host_u16 (key0.out_port), &new_addr0);
- ses0 = snat_det_get_ses_by_out (dm0, &new_addr0, key0.as_u64);
+ ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
if (PREDICT_FALSE (!ses0))
{
/* Don't NAT packet aimed at the intfc address */
- if (PREDICT_FALSE (is_interface_addr (sm, node, sw_if_index0,
- ip0->dst_address.as_u32)))
+ if (PREDICT_FALSE (!det44_is_interface_addr (node, sw_if_index0,
+ ip0->dst_address.as_u32)))
{
*dont_translate = 1;
goto out;
}
- nat_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &key0.ext_host_addr,
- clib_net_to_host_u16 (key0.ext_host_port),
- format_ip4_address, &out_addr,
- clib_net_to_host_u16 (key0.out_port),
- format_ip4_address, &new_addr0);
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &key0.ext_host_addr,
+ clib_net_to_host_u16 (key0.ext_host_port),
+ format_ip4_address, &out_addr,
+ clib_net_to_host_u16 (key0.out_port),
+ format_ip4_address, &new_addr0);
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
+ next0 = DET44_OUT2IN_NEXT_DROP;
goto out;
}
&& !icmp_type_is_error_message (vnet_buffer (b0)->ip.
reass.icmp_type_or_tcp_flags)))
{
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_BAD_ICMP_TYPE];
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_BAD_ICMP_TYPE];
+ next0 = DET44_OUT2IN_NEXT_DROP;
goto out;
}
if (ses0)
{
*addr = new_addr0;
- *fib_index = sm->inside_fib_index;
+ *fib_index = dm->inside_fib_index;
*port = ses0->in_port;
}
if (d)
*(snat_det_session_t **) d = ses0;
if (e)
- *(snat_det_map_t **) e = dm0;
+ *(snat_det_map_t **) e = mp0;
+ return next0;
+}
+#endif
+
+#ifndef CLIB_MARCH_VARIANT
+u32
+det44_icmp_out2in (vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ icmp46_header_t * icmp0,
+ u32 sw_if_index0,
+ u32 rx_fib_index0,
+ vlib_node_runtime_t * node,
+ u32 next0, u32 thread_index, void *d, void *e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ u32 new_addr0, old_addr0, next0_tmp, fib_index;
+ u16 old_id0, new_id0, port, checksum0;
+ icmp_echo_header_t *echo0, *inner_echo0;
+ icmp46_header_t *inner_icmp0;
+ ip4_header_t *inner_ip0;
+ ip4_address_t addr;
+ void *l4_header;
+ u8 dont_translate;
+ ip_csum_t sum0;
+ nat_protocol_t proto;
+
+ echo0 = (icmp_echo_header_t *) (icmp0 + 1);
+ next0_tmp = icmp_match_out2in_det (node, thread_index, b0, ip0,
+ &addr, &port, &fib_index, &proto,
+ d, e, &dont_translate);
+ if (next0_tmp != ~0)
+ next0 = next0_tmp;
+ if (next0 == DET44_OUT2IN_NEXT_DROP || dont_translate)
+ goto out;
+
+ if (PREDICT_TRUE (!ip4_is_fragment (ip0)))
+ {
+ sum0 =
+ ip_incremental_checksum_buffer (vm, b0,
+ (u8 *) icmp0 -
+ (u8 *) vlib_buffer_get_current (b0),
+ ntohs (ip0->length) -
+ ip4_header_bytes (ip0), 0);
+ checksum0 = ~ip_csum_fold (sum0);
+ if (checksum0 != 0 && checksum0 != 0xffff)
+ {
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ goto out;
+ }
+ }
+
+ old_addr0 = ip0->dst_address.as_u32;
+ new_addr0 = ip0->dst_address.as_u32 = addr.as_u32;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
+
+ sum0 = ip0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ dst_address /* changed member */ );
+ ip0->checksum = ip_csum_fold (sum0);
+
+
+ if (!vnet_buffer (b0)->ip.reass.is_non_first_fragment)
+ {
+ if (icmp0->checksum == 0)
+ icmp0->checksum = 0xffff;
+
+ if (!icmp_type_is_error_message (icmp0->type))
+ {
+ new_id0 = port;
+ if (PREDICT_FALSE (new_id0 != echo0->identifier))
+ {
+ old_id0 = echo0->identifier;
+ new_id0 = port;
+ echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier /* changed member */ );
+ icmp0->checksum = ip_csum_fold (sum0);
+ }
+ }
+ else
+ {
+ inner_ip0 = (ip4_header_t *) (echo0 + 1);
+ l4_header = ip4_next_header (inner_ip0);
+
+ if (!ip4_header_checksum_is_valid (inner_ip0))
+ {
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ goto out;
+ }
+
+ old_addr0 = inner_ip0->src_address.as_u32;
+ inner_ip0->src_address = addr;
+ new_addr0 = inner_ip0->src_address.as_u32;
+
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
+ src_address /* changed member */ );
+ icmp0->checksum = ip_csum_fold (sum0);
+
+ switch (proto)
+ {
+ case NAT_PROTOCOL_ICMP:
+ inner_icmp0 = (icmp46_header_t *) l4_header;
+ inner_echo0 = (icmp_echo_header_t *) (inner_icmp0 + 1);
+
+ old_id0 = inner_echo0->identifier;
+ new_id0 = port;
+ inner_echo0->identifier = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 =
+ ip_csum_update (sum0, old_id0, new_id0, icmp_echo_header_t,
+ identifier);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ case NAT_PROTOCOL_UDP:
+ case NAT_PROTOCOL_TCP:
+ old_id0 = ((tcp_udp_header_t *) l4_header)->src_port;
+ new_id0 = port;
+ ((tcp_udp_header_t *) l4_header)->src_port = new_id0;
+
+ sum0 = icmp0->checksum;
+ sum0 = ip_csum_update (sum0, old_id0, new_id0, tcp_udp_header_t,
+ src_port);
+ icmp0->checksum = ip_csum_fold (sum0);
+ break;
+ default:
+ ASSERT (0);
+ }
+ }
+ }
+
+out:
return next0;
}
#endif
-VLIB_NODE_FN (snat_det_out2in_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (det44_out2in_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next;
- nat_det_out2in_next_t next_index;
+ det44_out2in_next_t next_index;
u32 pkts_processed = 0;
- snat_main_t *sm = &snat_main;
+ det44_main_t *dm = &det44_main;
u32 thread_index = vm->thread_index;
from = vlib_frame_vector_args (frame);
{
u32 bi0, bi1;
vlib_buffer_t *b0, *b1;
- u32 next0 = NAT_DET_OUT2IN_NEXT_LOOKUP;
- u32 next1 = NAT_DET_OUT2IN_NEXT_LOOKUP;
+ u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
+ u32 next1 = DET44_OUT2IN_NEXT_LOOKUP;
u32 sw_if_index0, sw_if_index1;
ip4_header_t *ip0, *ip1;
ip_csum_t sum0, sum1;
tcp_header_t *tcp0, *tcp1;
u32 proto0, proto1;
snat_det_out_key_t key0, key1;
- snat_det_map_t *dm0, *dm1;
+ snat_det_map_t *mp0, *mp1;
snat_det_session_t *ses0 = 0, *ses1 = 0;
u32 rx_fib_index0, rx_fib_index1;
icmp46_header_t *icmp0, *icmp1;
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_OUT2IN_NEXT_ICMP_ERROR;
+ next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
goto trace0;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_out2in (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace0;
}
key0.ext_host_port = tcp0->src;
key0.out_port = tcp0->dst;
- dm0 = snat_det_map_by_out (sm, &ip0->dst_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_out (&ip0->dst_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("unknown dst address: %U",
- format_ip4_address, &ip0->dst_address);
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip0->dst_address);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace0;
}
- snat_det_reverse (dm0, &ip0->dst_address,
+ snat_det_reverse (mp0, &ip0->dst_address,
clib_net_to_host_u16 (tcp0->dst), &new_addr0);
- ses0 = snat_det_get_ses_by_out (dm0, &new_addr0, key0.as_u64);
+ ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
if (PREDICT_FALSE (!ses0))
{
- nat_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip0->src_address,
- clib_net_to_host_u16 (tcp0->src),
- format_ip4_address, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst),
- format_ip4_address, &new_addr0);
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip0->src_address,
+ clib_net_to_host_u16 (tcp0->src),
+ format_ip4_address, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst),
+ format_ip4_address, &new_addr0);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace0;
}
old_port0 = udp0->dst_port;
old_addr0 = ip0->dst_address;
ip0->dst_address = new_addr0;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->inside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_CLOSE_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp0, ses0);
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_out2in_trace_t *t =
+ det44_out2in_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_OUT2IN_NEXT_DROP;
+ pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
b1 = vlib_get_buffer (vm, bi1);
icmp4_error_set_vnet_buffer (b1, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next1 = NAT_DET_OUT2IN_NEXT_ICMP_ERROR;
+ next1 = DET44_OUT2IN_NEXT_ICMP_ERROR;
goto trace1;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index1);
icmp1 = (icmp46_header_t *) udp1;
- next1 = icmp_out2in (sm, b1, ip1, icmp1, sw_if_index1,
- rx_fib_index1, node, next1, thread_index,
- &ses1, &dm1);
+ next1 = det44_icmp_out2in (b1, ip1, icmp1, sw_if_index1,
+ rx_fib_index1, node, next1,
+ thread_index, &ses1, &mp1);
goto trace1;
}
key1.ext_host_port = tcp1->src;
key1.out_port = tcp1->dst;
- dm1 = snat_det_map_by_out (sm, &ip1->dst_address);
- if (PREDICT_FALSE (!dm1))
+ mp1 = snat_det_map_by_out (&ip1->dst_address);
+ if (PREDICT_FALSE (!mp1))
{
- nat_log_info ("unknown dst address: %U",
- format_ip4_address, &ip1->dst_address);
- next1 = NAT_DET_OUT2IN_NEXT_DROP;
- b1->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip1->dst_address);
+ next1 = DET44_OUT2IN_NEXT_DROP;
+ b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace1;
}
- snat_det_reverse (dm1, &ip1->dst_address,
+ snat_det_reverse (mp1, &ip1->dst_address,
clib_net_to_host_u16 (tcp1->dst), &new_addr1);
- ses1 = snat_det_get_ses_by_out (dm1, &new_addr1, key1.as_u64);
+ ses1 = snat_det_get_ses_by_out (mp1, &new_addr1, key1.as_u64);
if (PREDICT_FALSE (!ses1))
{
- nat_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip1->src_address,
- clib_net_to_host_u16 (tcp1->src),
- format_ip4_address, &ip1->dst_address,
- clib_net_to_host_u16 (tcp1->dst),
- format_ip4_address, &new_addr1);
- next1 = NAT_DET_OUT2IN_NEXT_DROP;
- b1->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip1->src_address,
+ clib_net_to_host_u16 (tcp1->src),
+ format_ip4_address, &ip1->dst_address,
+ clib_net_to_host_u16 (tcp1->dst),
+ format_ip4_address, &new_addr1);
+ next1 = DET44_OUT2IN_NEXT_DROP;
+ b1->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace1;
}
old_port1 = udp1->dst_port;
old_addr1 = ip1->dst_address;
ip1->dst_address = new_addr1;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = sm->inside_fib_index;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
sum1 = ip1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
if (PREDICT_TRUE (proto1 == NAT_PROTOCOL_TCP))
{
if (tcp1->flags & TCP_FLAG_FIN
- && ses1->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses1->state = SNAT_SESSION_TCP_CLOSE_WAIT;
+ && ses1->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses1->state = DET44_SESSION_TCP_CLOSE_WAIT;
else if (tcp1->flags & TCP_FLAG_ACK
- && ses1->state == SNAT_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (dm1, ses1);
+ && ses1->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp1, ses1);
sum1 = tcp1->checksum;
sum1 = ip_csum_update (sum1, old_addr1.as_u32, new_addr1.as_u32,
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b1->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_out2in_trace_t *t =
+ det44_out2in_trace_t *t =
vlib_add_trace (vm, node, b1, sizeof (*t));
t->sw_if_index = sw_if_index1;
t->next_index = next1;
t->session_index = ~0;
if (ses1)
- t->session_index = ses1 - dm1->sessions;
+ t->session_index = ses1 - mp1->sessions;
}
- pkts_processed += next1 != NAT_DET_OUT2IN_NEXT_DROP;
+ pkts_processed += next1 != DET44_OUT2IN_NEXT_DROP;
/* verify speculative enqueues, maybe switch current next frame */
vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
{
u32 bi0;
vlib_buffer_t *b0;
- u32 next0 = NAT_DET_OUT2IN_NEXT_LOOKUP;
+ u32 next0 = DET44_OUT2IN_NEXT_LOOKUP;
u32 sw_if_index0;
ip4_header_t *ip0;
ip_csum_t sum0;
tcp_header_t *tcp0;
u32 proto0;
snat_det_out_key_t key0;
- snat_det_map_t *dm0;
+ snat_det_map_t *mp0;
snat_det_session_t *ses0 = 0;
u32 rx_fib_index0;
icmp46_header_t *icmp0;
icmp4_error_set_vnet_buffer (b0, ICMP4_time_exceeded,
ICMP4_time_exceeded_ttl_exceeded_in_transit,
0);
- next0 = NAT_DET_OUT2IN_NEXT_ICMP_ERROR;
+ next0 = DET44_OUT2IN_NEXT_ICMP_ERROR;
goto trace00;
}
ip4_fib_table_get_index_for_sw_if_index (sw_if_index0);
icmp0 = (icmp46_header_t *) udp0;
- next0 = icmp_out2in (sm, b0, ip0, icmp0, sw_if_index0,
- rx_fib_index0, node, next0, thread_index,
- &ses0, &dm0);
+ next0 = det44_icmp_out2in (b0, ip0, icmp0, sw_if_index0,
+ rx_fib_index0, node, next0,
+ thread_index, &ses0, &mp0);
goto trace00;
}
key0.ext_host_port = tcp0->src;
key0.out_port = tcp0->dst;
- dm0 = snat_det_map_by_out (sm, &ip0->dst_address);
- if (PREDICT_FALSE (!dm0))
+ mp0 = snat_det_map_by_out (&ip0->dst_address);
+ if (PREDICT_FALSE (!mp0))
{
- nat_log_info ("unknown dst address: %U",
- format_ip4_address, &ip0->dst_address);
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("unknown dst address: %U",
+ format_ip4_address, &ip0->dst_address);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace00;
}
- snat_det_reverse (dm0, &ip0->dst_address,
+ snat_det_reverse (mp0, &ip0->dst_address,
clib_net_to_host_u16 (tcp0->dst), &new_addr0);
- ses0 = snat_det_get_ses_by_out (dm0, &new_addr0, key0.as_u64);
+ ses0 = snat_det_get_ses_by_out (mp0, &new_addr0, key0.as_u64);
if (PREDICT_FALSE (!ses0))
{
- nat_log_info ("no match src %U:%d dst %U:%d for user %U",
- format_ip4_address, &ip0->src_address,
- clib_net_to_host_u16 (tcp0->src),
- format_ip4_address, &ip0->dst_address,
- clib_net_to_host_u16 (tcp0->dst),
- format_ip4_address, &new_addr0);
- next0 = NAT_DET_OUT2IN_NEXT_DROP;
- b0->error = node->errors[NAT_DET_OUT2IN_ERROR_NO_TRANSLATION];
+ det44_log_info ("no match src %U:%d dst %U:%d for user %U",
+ format_ip4_address, &ip0->src_address,
+ clib_net_to_host_u16 (tcp0->src),
+ format_ip4_address, &ip0->dst_address,
+ clib_net_to_host_u16 (tcp0->dst),
+ format_ip4_address, &new_addr0);
+ next0 = DET44_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[DET44_OUT2IN_ERROR_NO_TRANSLATION];
goto trace00;
}
old_port0 = udp0->dst_port;
old_addr0 = ip0->dst_address;
ip0->dst_address = new_addr0;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm->inside_fib_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = dm->inside_fib_index;
sum0 = ip0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_TRUE (proto0 == NAT_PROTOCOL_TCP))
{
if (tcp0->flags & TCP_FLAG_FIN
- && ses0->state == SNAT_SESSION_TCP_ESTABLISHED)
- ses0->state = SNAT_SESSION_TCP_CLOSE_WAIT;
+ && ses0->state == DET44_SESSION_TCP_ESTABLISHED)
+ ses0->state = DET44_SESSION_TCP_CLOSE_WAIT;
else if (tcp0->flags & TCP_FLAG_ACK
- && ses0->state == SNAT_SESSION_TCP_LAST_ACK)
- snat_det_ses_close (dm0, ses0);
+ && ses0->state == DET44_SESSION_TCP_LAST_ACK)
+ snat_det_ses_close (mp0, ses0);
sum0 = tcp0->checksum;
sum0 = ip_csum_update (sum0, old_addr0.as_u32, new_addr0.as_u32,
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- nat_det_out2in_trace_t *t =
+ det44_out2in_trace_t *t =
vlib_add_trace (vm, node, b0, sizeof (*t));
t->sw_if_index = sw_if_index0;
t->next_index = next0;
t->session_index = ~0;
if (ses0)
- t->session_index = ses0 - dm0->sessions;
+ t->session_index = ses0 - mp0->sessions;
}
- pkts_processed += next0 != NAT_DET_OUT2IN_NEXT_DROP;
+ pkts_processed += next0 != DET44_OUT2IN_NEXT_DROP;
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, sm->det_out2in_node_index,
- NAT_DET_OUT2IN_ERROR_OUT2IN_PACKETS,
+ vlib_node_increment_counter (vm, dm->out2in_node_index,
+ DET44_OUT2IN_ERROR_OUT2IN_PACKETS,
pkts_processed);
return frame->n_vectors;
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_det_out2in_node) = {
- .name = "nat44-det-out2in",
+VLIB_REGISTER_NODE (det44_out2in_node) = {
+ .name = "det44-out2in",
.vector_size = sizeof (u32),
- .format_trace = format_nat_det_out2in_trace,
+ .format_trace = format_det44_out2in_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(nat_det_out2in_error_strings),
- .error_strings = nat_det_out2in_error_strings,
- .runtime_data_bytes = sizeof (snat_runtime_t),
- .n_next_nodes = NAT_DET_OUT2IN_N_NEXT,
+ .n_errors = ARRAY_LEN(det44_out2in_error_strings),
+ .error_strings = det44_out2in_error_strings,
+ .runtime_data_bytes = sizeof (det44_runtime_t),
+ .n_next_nodes = DET44_OUT2IN_N_NEXT,
/* edit / add dispositions here */
.next_nodes = {
- [NAT_DET_OUT2IN_NEXT_DROP] = "error-drop",
- [NAT_DET_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
- [NAT_DET_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
+ [DET44_OUT2IN_NEXT_DROP] = "error-drop",
+ [DET44_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
+ [DET44_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
};
/* *INDENT-ON* */
import "vnet/interface_types.api";
/**
- * @file nat.api
+ * @file dslite.api
* @brief VPP control-plane API messages.
*
* This file defines VPP control-plane API messages which are generally
VLIB_INIT_FUNCTION (dslite_init);
+/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () =
{
-.version = VPP_BUILD_VER,.description = "Dual-Stack Lite",};
+ .version = VPP_BUILD_VER,
+ .description = "Dual-Stack Lite",
+};
+/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
if (vnet_buffer (b0)->sw_if_index[VLIB_TX] == ~0)
{
- if (sm->deterministic ||
- 0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
+ if (0 != snat_icmp_hairpinning (sm, b0, ip0, icmp0,
sm->endpoint_dependent))
vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
}
bool enabled;
};
-
-/*
- * Deterministic NAT (CGN) APIs
- */
-
-/** \brief Add/delete NAT deterministic mapping
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param is_add - true if add, false if delete
- @param in_addr - inside IPv4 address
- @param in_plen - inside IPv4 address prefix length
- @param out_addr - outside IPv4 address
- @param out_plen - outside IPv4 address prefix length
-*/
-autoreply define nat_det_add_del_map {
- u32 client_index;
- u32 context;
- bool is_add;
- vl_api_ip4_address_t in_addr;
- u8 in_plen;
- vl_api_ip4_address_t out_addr;
- u8 out_plen;
-};
-
-/** \brief Get outside address and port range from inside address
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param in_addr - inside IP address
-*/
-define nat_det_forward {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t in_addr;
-};
-
-/** \brief Get outside address and port range from inside address
- @param context - sender context, to match reply w/ request
- @param retval - return code
- @param out_port_lo - outside port range start
- @param out_port_hi - outside port range end
- @param out_addr - outside IPv4 address
-*/
-define nat_det_forward_reply {
- u32 context;
- i32 retval;
- u16 out_port_lo;
- u16 out_port_hi;
- vl_api_ip4_address_t out_addr;
-};
-
-/** \brief Get inside address from outside address and port
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param out_port - outside port
- @param out_addr - outside IPv4 address
-*/
-define nat_det_reverse {
- u32 client_index;
- u32 context;
- u16 out_port;
- vl_api_ip4_address_t out_addr;
-};
-
-/** \brief Get inside address from outside address and port reply
- @param context - sender context, to match reply w/ request
- @param retval - return code
- @param in_addr - inside IP address
-*/
-define nat_det_reverse_reply {
- u32 context;
- i32 retval;
- vl_api_ip4_address_t in_addr;
-};
-
-/** \brief Dump NAT deterministic mappings
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat_det_map_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT users response
- @param context - sender context, to match reply w/ request
- @param in_addr - inside IPv4 address
- @param in_plen - inside IPv4 address prefix length
- @param out_addr - outside IPv4 address
- @param out_plen - outside IPv4 address prefix length
- @param sharing_ratio - outside to inside address sharing ratio
- @param ports_per_host - number of ports available to a host
- @param ses_num - number of sessions belonging to this mapping
-*/
-define nat_det_map_details {
- u32 context;
- vl_api_ip4_address_t in_addr;
- u8 in_plen;
- vl_api_ip4_address_t out_addr;
- u8 out_plen;
- u32 sharing_ratio;
- u16 ports_per_host;
- u32 ses_num;
-};
-
-/** \brief Close deterministic NAT session by outside address and port
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param out_addr - outside IPv4 address
- @param out_port - outside port
- @param ext_addr - external host IPv4 address
- @param ext_port - external host port
-*/
-autoreply define nat_det_close_session_out {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t out_addr;
- u16 out_port;
- vl_api_ip4_address_t ext_addr;
- u16 ext_port;
-};
-
-/** \brief Close deterministic NAT session by inside address and port
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param in_addr - inside IP address
- @param in_port - inside port
- @param ext_addr - external host IP address
- @param ext_port - external host port
-*/
-autoreply define nat_det_close_session_in {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t in_addr;
- u16 in_port;
- vl_api_ip4_address_t ext_addr;
- u16 ext_port;
-};
-
-/** \brief Dump determinstic NAT sessions
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param user_addr - address of an inside user whose sessions to dump
-*/
-define nat_det_session_dump {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t user_addr;
-};
-
-/** \brief Deterministic NAT sessions reply
- @param context - sender context, to match reply w/ request
- @param in_port - inside port
- @param ext_addr - external host IPv4 address
- @param ext_port - external host port
- @param out_port - outside NAT port
- @param state - session state
- @param expire - session expiration timestamp
-*/
-define nat_det_session_details {
- u32 context;
- u16 in_port;
- vl_api_ip4_address_t ext_addr;
- u16 ext_port;
- u16 out_port;
- u8 state;
- u32 expire;
-};
-
/*
* NAT64 APIs
*/
#include <nat/nat.h>
#include <nat/nat_dpo.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_det.h>
#include <nat/nat64.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
.node_name = "nat44-classify",
.runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
};
-VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-in2out",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
-VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-out2in",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature",
- "ip4-dhcp-client-detect"),
-};
-VNET_FEATURE_INIT (ip4_nat_det_classify, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "nat44-det-classify",
- .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa","ip4-sv-reassembly-feature"),
-};
VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static) = {
.arc_name = "ip4-unicast",
.node_name = "nat44-ed-in2out",
const char *feature_name, *del_feature_name;
snat_address_t *ap;
snat_static_mapping_t *m;
- snat_det_map_t *dm;
nat_outside_fib_t *outside_fib;
u32 fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
sw_if_index);
feature_name = is_inside ? "nat44-in2out-fast" : "nat44-out2in-fast";
else
{
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
feature_name =
is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
- else if (sm->deterministic)
- feature_name = is_inside ? "nat44-det-in2out" : "nat44-det-out2in";
else if (sm->endpoint_dependent)
{
feature_name = is_inside ? "nat-pre-in2out" : "nat-pre-out2in";
feature_name = is_inside ? "nat44-in2out" : "nat44-out2in";
}
- if (sm->fq_in2out_index == ~0 && !sm->deterministic && sm->num_workers > 1)
+ if (sm->fq_in2out_index == ~0 && sm->num_workers > 1)
sm->fq_in2out_index =
vlib_frame_queue_main_init (sm->in2out_node_index, NAT_FQ_NELTS);
- if (sm->fq_out2in_index == ~0 && !sm->deterministic && sm->num_workers > 1)
+ if (sm->fq_out2in_index == ~0 && sm->num_workers > 1)
sm->fq_out2in_index =
vlib_frame_queue_main_init (sm->out2in_node_index, NAT_FQ_NELTS);
else
i->flags &= ~NAT_INTERFACE_FLAG_IS_OUTSIDE;
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
{
del_feature_name = "nat44-handoff-classify";
feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
}
- else if (sm->deterministic)
- {
- del_feature_name = "nat44-det-classify";
- feature_name = !is_inside ? "nat44-det-in2out" :
- "nat44-det-out2in";
- }
else if (sm->endpoint_dependent)
{
del_feature_name = "nat44-ed-classify";
vnet_feature_enable_disable ("ip4-local",
"nat44-ed-hairpinning",
sw_if_index, 1, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local",
"nat44-hairpinning",
sw_if_index, 1, 0, 0);
vnet_feature_enable_disable ("ip4-local",
"nat44-ed-hairpinning",
sw_if_index, 0, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local",
"nat44-hairpinning",
sw_if_index, 0, 0, 0);
(nat_interface_is_outside(i) && !is_inside))
return 0;
- if (sm->num_workers > 1 && !sm->deterministic)
+ if (sm->num_workers > 1)
{
del_feature_name = !is_inside ? "nat44-in2out-worker-handoff" :
"nat44-out2in-worker-handoff";
feature_name = "nat44-handoff-classify";
}
- else if (sm->deterministic)
- {
- del_feature_name = !is_inside ? "nat44-det-in2out" :
- "nat44-det-out2in";
- feature_name = "nat44-det-classify";
- }
else if (sm->endpoint_dependent)
{
del_feature_name = !is_inside ? "nat-pre-in2out" :
if (sm->endpoint_dependent)
vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
sw_if_index, 0, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
sw_if_index, 0, 0, 0);
}
if (sm->endpoint_dependent)
vnet_feature_enable_disable ("ip4-local", "nat44-ed-hairpinning",
sw_if_index, 1, 0, 0);
- else if (!sm->deterministic)
+ else
vnet_feature_enable_disable ("ip4-local", "nat44-hairpinning",
sw_if_index, 1, 0, 0);
}
snat_add_del_addr_to_fib(&m->external_addr, 32, sw_if_index, !is_del);
}));
-
- pool_foreach (dm, sm->det_maps,
- ({
- snat_add_del_addr_to_fib(&dm->out_addr, dm->out_plen, sw_if_index, !is_del);
- }));
/* *INDENT-ON* */
return 0;
sw_if_index);
- if (sm->deterministic ||
- (sm->static_mapping_only && !(sm->static_mapping_connection_tracking)))
+ if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
return VNET_API_ERROR_UNSUPPORTED;
/* *INDENT-OFF* */
node = vlib_get_node_by_name (vm, (u8 *) "nat44-ed-out2in-slowpath");
sm->ed_out2in_slowpath_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-det-in2out");
- sm->det_in2out_node_index = node->index;
- node = vlib_get_node_by_name (vm, (u8 *) "nat44-det-out2in");
- sm->det_out2in_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpinning");
sm->hairpinning_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "nat44-hairpin-dst");
u32 tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
u32 tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
- sm->deterministic = 0;
sm->out2in_dpo = 0;
sm->endpoint_dependent = 0;
if (unformat (input, "connection tracking"))
static_mapping_connection_tracking = 1;
}
- else if (unformat (input, "deterministic"))
- sm->deterministic = 1;
else if (unformat (input, "nat64 bib hash buckets %d",
&nat64_bib_buckets))
;
format_unformat_error, input);
}
- if (sm->deterministic && sm->endpoint_dependent)
- return clib_error_return (0,
- "deterministic and endpoint-dependent modes are mutually exclusive");
-
- if (static_mapping_only && (sm->deterministic || sm->endpoint_dependent))
+ if (static_mapping_only && (sm->endpoint_dependent))
return clib_error_return (0,
"static mapping only mode available only for simple nat");
- if (sm->out2in_dpo && (sm->deterministic || sm->endpoint_dependent))
+ if (sm->out2in_dpo && (sm->endpoint_dependent))
return clib_error_return (0,
"out2in dpo mode available only for simple nat");
if (sm->endpoint_dependent && max_users_per_thread > 0)
nat64_set_hash (nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets,
nat64_st_memory_size);
- if (sm->deterministic)
+ if (sm->endpoint_dependent)
{
- sm->in2out_node_index = snat_det_in2out_node.index;
- sm->in2out_output_node_index = ~0;
- sm->out2in_node_index = snat_det_out2in_node.index;
- sm->icmp_match_in2out_cb = icmp_match_in2out_det;
- sm->icmp_match_out2in_cb = icmp_match_out2in_det;
+ sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
+ sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
+
+ sm->in2out_node_index = nat44_ed_in2out_node.index;
+ sm->in2out_output_node_index = nat44_ed_in2out_output_node.index;
+ sm->out2in_node_index = nat44_ed_out2in_node.index;
+
+ sm->icmp_match_in2out_cb = icmp_match_in2out_ed;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_ed;
+ nat_affinity_init (vm);
+ nat_ha_init (vm, nat_ha_sadd_ed_cb, nat_ha_sdel_ed_cb,
+ nat_ha_sref_ed_cb);
+ clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
+ clib_max (1, sm->num_workers) *
+ sm->translation_buckets,
+ clib_max (1, sm->num_workers) *
+ sm->translation_memory_size);
+ clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
+ format_ed_session_kvp);
}
else
{
- if (sm->endpoint_dependent)
- {
- sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
- sm->worker_out2in_cb = nat44_ed_get_worker_out2in_cb;
-
- sm->in2out_node_index = nat44_ed_in2out_node.index;
- sm->in2out_output_node_index = nat44_ed_in2out_output_node.index;
- sm->out2in_node_index = nat44_ed_out2in_node.index;
-
- sm->icmp_match_in2out_cb = icmp_match_in2out_ed;
- sm->icmp_match_out2in_cb = icmp_match_out2in_ed;
- nat_affinity_init (vm);
- nat_ha_init (vm, nat_ha_sadd_ed_cb, nat_ha_sdel_ed_cb,
- nat_ha_sref_ed_cb);
- clib_bihash_init_16_8 (&sm->out2in_ed, "out2in-ed",
- clib_max (1, sm->num_workers) *
- sm->translation_buckets,
- clib_max (1, sm->num_workers) *
- sm->translation_memory_size);
- clib_bihash_set_kvp_format_fn_16_8 (&sm->out2in_ed,
- format_ed_session_kvp);
- }
- else
- {
- sm->worker_in2out_cb = snat_get_worker_in2out_cb;
- sm->worker_out2in_cb = snat_get_worker_out2in_cb;
+ sm->worker_in2out_cb = snat_get_worker_in2out_cb;
+ sm->worker_out2in_cb = snat_get_worker_out2in_cb;
- sm->in2out_node_index = snat_in2out_node.index;
- sm->in2out_output_node_index = snat_in2out_output_node.index;
- sm->out2in_node_index = snat_out2in_node.index;
+ sm->in2out_node_index = snat_in2out_node.index;
+ sm->in2out_output_node_index = snat_in2out_output_node.index;
+ sm->out2in_node_index = snat_out2in_node.index;
- sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
- sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
- nat_ha_init (vm, nat_ha_sadd_cb, nat_ha_sdel_cb, nat_ha_sref_cb);
- }
- if (!static_mapping_only ||
- (static_mapping_only && static_mapping_connection_tracking))
- {
+ sm->icmp_match_in2out_cb = icmp_match_in2out_slow;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_slow;
+ nat_ha_init (vm, nat_ha_sadd_cb, nat_ha_sdel_cb, nat_ha_sref_cb);
+ }
+ if (!static_mapping_only ||
+ (static_mapping_only && static_mapping_connection_tracking))
+ {
/* *INDENT-OFF* */
vec_foreach (tsm, sm->per_thread_data)
{
nat44_db_init (tsm);
}
/* *INDENT-ON* */
- }
- else
- {
- sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
- sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
- }
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
- format_static_mapping_kvp);
-
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external",
- static_mapping_buckets,
- static_mapping_memory_size);
- clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
- format_static_mapping_kvp);
}
+ else
+ {
+ sm->icmp_match_in2out_cb = icmp_match_in2out_fast;
+ sm->icmp_match_out2in_cb = icmp_match_out2in_fast;
+ }
+ clib_bihash_init_8_8 (&sm->static_mapping_by_local,
+ "static_mapping_by_local", static_mapping_buckets,
+ static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_local,
+ format_static_mapping_kvp);
+
+ clib_bihash_init_8_8 (&sm->static_mapping_by_external,
+ "static_mapping_by_external",
+ static_mapping_buckets, static_mapping_memory_size);
+ clib_bihash_set_kvp_format_fn_8_8 (&sm->static_mapping_by_external,
+ format_static_mapping_kvp);
return 0;
}
u32 arc_next_index;
} nat_pre_trace_t;
-/* deterministic session outside key */
-typedef struct
-{
- union
- {
- struct
- {
- ip4_address_t ext_host_addr;
- u16 ext_host_port;
- u16 out_port;
- };
- u64 as_u64;
- };
-} snat_det_out_key_t;
-
/* user (internal host) key */
typedef struct
{
u32 refcount;
} nat_outside_fib_t;
-typedef struct
-{
- /* Inside network port */
- u16 in_port;
- /* Outside network address and port */
- snat_det_out_key_t out;
- /* Session state */
- u8 state;
- /* Expire timeout */
- u32 expire;
-} snat_det_session_t;
-
-typedef struct
-{
- /* inside IP address range */
- ip4_address_t in_addr;
- u8 in_plen;
- /* outside IP address range */
- ip4_address_t out_addr;
- u8 out_plen;
- /* inside IP addresses / outside IP addresses */
- u32 sharing_ratio;
- /* number of ports available to internal host */
- u16 ports_per_host;
- /* session counter */
- u32 ses_num;
- /* vector of sessions */
- snat_det_session_t *sessions;
-} snat_det_map_t;
-
typedef struct
{
/* backend IP address */
u32 out2in_fast_node_index;
u32 ed_out2in_node_index;
u32 ed_out2in_slowpath_node_index;
- u32 det_in2out_node_index;
- u32 det_out2in_node_index;
u32 hairpinning_node_index;
u32 hairpin_dst_node_index;
u32 ed_hairpin_dst_node_index;
u32 ed_hairpin_src_node_index;
-
- /* Deterministic NAT mappings */
- snat_det_map_t *det_maps;
-
/* If forwarding is enabled */
u8 forwarding_enabled;
/* Config parameters */
u8 static_mapping_only;
u8 static_mapping_connection_tracking;
- u8 deterministic;
u8 out2in_dpo;
u8 endpoint_dependent;
extern vlib_node_registration_t snat_in2out_worker_handoff_node;
extern vlib_node_registration_t snat_in2out_output_worker_handoff_node;
extern vlib_node_registration_t snat_out2in_worker_handoff_node;
-extern vlib_node_registration_t snat_det_in2out_node;
-extern vlib_node_registration_t snat_det_out2in_node;
extern vlib_node_registration_t nat44_ed_in2out_node;
extern vlib_node_registration_t nat44_ed_in2out_output_node;
extern vlib_node_registration_t nat44_ed_out2in_node;
format_function_t format_snat_static_mapping;
format_function_t format_snat_static_map_to_resolve;
format_function_t format_snat_session;
-format_function_t format_det_map_ses;
format_function_t format_snat_key;
format_function_t format_static_mapping_key;
format_function_t format_nat_protocol;
nat_protocol_t * proto, void *d, void *e,
u8 * dont_translate);
-/* ICMP deterministic NAT session match functions */
-u32 icmp_match_out2in_det (snat_main_t * sm, vlib_node_runtime_t * node,
- u32 thread_index, vlib_buffer_t * b0,
- ip4_header_t * ip0, ip4_address_t * addr,
- u16 * port, u32 * fib_index,
- nat_protocol_t * proto, void *d, void *e,
- u8 * dont_translate);
-u32 icmp_match_in2out_det (snat_main_t * sm, vlib_node_runtime_t * node,
- u32 thread_index, vlib_buffer_t * b0,
- ip4_header_t * ip0, ip4_address_t * addr,
- u16 * port, u32 * fib_index,
- nat_protocol_t * proto, void *d, void *e,
- u8 * dont_translate);
-
/* ICMP endpoint-dependent session match functions */
u32 icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node,
u32 thread_index, vlib_buffer_t * b0,
snat_user_key_t user_key;
clib_bihash_kv_8_8_t kv, value;
- if (sm->deterministic || sm->endpoint_dependent)
+ if (sm->endpoint_dependent)
return rv;
user_key.addr.as_u32 = addr->as_u32;
};
/* *INDENT-ON* */
-VLIB_NODE_FN (nat44_det_classify_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_classify_node_fn_inline (vm, node, frame);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_det_classify_node) = {
- .name = "nat44-det-classify",
- .vector_size = sizeof (u32),
- .format_trace = format_nat44_classify_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
- .next_nodes = {
- [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-det-in2out",
- [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-det-out2in",
- [NAT44_CLASSIFY_NEXT_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
VLIB_NODE_FN (nat44_handoff_classify_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_det.h>
#include <nat/nat64.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <vnet/fib/fib_table.h>
#include <nat/nat_ha.h>
-
-#define UNSUPPORTED_IN_DET_OR_ED_MODE_STR \
- "This command is unsupported in deterministic or endpoint dependent mode"
-#define UNSUPPORTED_IN_DET_OR_NON_ED_MODE_STR \
- "This command is unsupported in deterministic or non endpoint dependent mode"
-#define UNSUPPORTED_IN_DET_MODE_STR \
- "This command is unsupported in deterministic mode"
+#define UNSUPPORTED_IN_ED_MODE_STR \
+ "This command is unsupported in endpoint dependent mode"
#define SUPPORTED_ONLY_IN_ED_MODE_STR \
"This command is supported only in endpoint dependent mode"
-#define SUPPORTED_ONLY_IN_DET_MODE_STR \
- "This command is supported only in deterministic mode"
static clib_error_t *
set_workers_command_fn (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
uword *bitmap = 0;
int rv = 0;
clib_error_t *error = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
snat_main_t *sm = &snat_main;
u32 *worker;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
if (sm->num_workers > 1)
{
vlib_cli_output (vm, "%d workers", vec_len (sm->workers));
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
u32 psid, psid_offset, psid_length, port_start, port_end;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
{
snat_main_t *sm = &snat_main;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
vlib_cli_output (vm, "NAT address and port: %U",
format_nat_addr_and_port_alloc_alg,
sm->addr_and_port_alloc_alg);
clib_error_t *error = 0;
u8 twice_nat = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
snat_main_t *sm = &snat_main;
snat_session_t *s;
- if (sm->deterministic || !sm->endpoint_dependent)
- return clib_error_return (0, UNSUPPORTED_IN_DET_OR_NON_ED_MODE_STR);
+ if (!sm->endpoint_dependent)
+ return clib_error_return (0, SUPPORTED_ONLY_IN_ED_MODE_STR);
vlib_cli_output (vm, "max translations per thread: %u",
sm->max_translations_per_thread);
snat_main_t *sm = &snat_main;
snat_address_t *ap;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
vlib_cli_output (vm, "NAT44 pool addresses:");
/* *INDENT-OFF* */
vec_foreach (ap, sm->addresses)
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
ip4_address_t l_addr, e_addr;
u32 l_port = 0, e_port = 0, vrf_id = ~0;
twice_nat_type_t twice_nat = TWICE_NAT_DISABLED;
u8 out2in_only = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
ip4_address_t addr;
u32 port = 0, vrf_id = ~0;
int rv;
nat_protocol_t proto;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
addr.as_u32 = 0;
/* Get a line of input. */
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
ip4_address_t l_addr, e_addr;
u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0, affinity = 0;
twice_nat_type_t twice_nat = TWICE_NAT_DISABLED;
u8 out2in_only = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
unformat_input_t * input, vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
ip4_address_t l_addr, e_addr;
u32 l_port = 0, e_port = 0, vrf_id = 0, probability = 0;
nat_protocol_t proto;
u8 proto_set = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
snat_static_mapping_t *m;
snat_static_map_resolve_t *rp;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
vlib_cli_output (vm, "NAT44 static mappings:");
/* *INDENT-OFF* */
pool_foreach (m, sm->static_mappings,
clib_error_t *error = 0;
u8 twice_nat = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
vnet_main_t *vnm = vnet_get_main ();
u32 *sw_if_index;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* *INDENT-OFF* */
vlib_cli_output (vm, "NAT44 pool address interfaces:");
vec_foreach (sw_if_index, sm->auto_add_sw_if_indices)
int detail = 0;
int i = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
if (!unformat_user (input, unformat_line_input, line_input))
goto print;
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
- snat_main_t *sm = &snat_main;
unformat_input_t _line_input, *line_input = &_line_input;
clib_error_t *error = 0;
u32 session_limit = 0, vrf_id = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
u32 fib_index = 0;
int rv;
- if (sm->deterministic || sm->endpoint_dependent)
- return clib_error_return (0, UNSUPPORTED_IN_DET_OR_ED_MODE_STR);
+ if (sm->endpoint_dependent)
+ return clib_error_return (0, UNSUPPORTED_IN_ED_MODE_STR);
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
- snat_main_t *sm = &snat_main;
clib_error_t *error = 0;
-
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
nat44_sessions_clear ();
return error;
}
nat_protocol_t proto;
int rv;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
u8 forwarding_enable_set = 0;
clib_error_t *error = 0;
- if (sm->deterministic)
- return clib_error_return (0, UNSUPPORTED_IN_DET_MODE_STR);
-
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, "'enable' or 'disable' expected");
return error;
}
-static clib_error_t *
-snat_det_map_command_fn (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- unformat_input_t _line_input, *line_input = &_line_input;
- ip4_address_t in_addr, out_addr;
- u32 in_plen, out_plen;
- int is_add = 1, rv;
- clib_error_t *error = 0;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat
- (line_input, "in %U/%u", unformat_ip4_address, &in_addr, &in_plen))
- ;
- else
- if (unformat
- (line_input, "out %U/%u", unformat_ip4_address, &out_addr,
- &out_plen))
- ;
- else if (unformat (line_input, "del"))
- is_add = 0;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (in_plen > 32 || out_plen > 32)
- {
- error = clib_error_return (0, "network prefix length must be <= 32");
- goto done;
- }
-
- rv = snat_det_add_map (sm, &in_addr, in_plen, &out_addr, out_plen, is_add);
-
- if (rv)
- {
- error = clib_error_return (0, "snat_det_add_map return %d", rv);
- goto done;
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-static clib_error_t *
-nat44_det_show_mappings_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- snat_det_map_t *dm;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- vlib_cli_output (vm, "NAT44 deterministic mappings:");
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- vlib_cli_output (vm, " in %U/%d out %U/%d\n",
- format_ip4_address, &dm->in_addr, dm->in_plen,
- format_ip4_address, &dm->out_addr, dm->out_plen);
- vlib_cli_output (vm, " outside address sharing ratio: %d\n",
- dm->sharing_ratio);
- vlib_cli_output (vm, " number of ports per inside host: %d\n",
- dm->ports_per_host);
- vlib_cli_output (vm, " sessions number: %d\n", dm->ses_num);
- }));
- /* *INDENT-ON* */
-
- return 0;
-}
-
-static clib_error_t *
-snat_det_forward_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- unformat_input_t _line_input, *line_input = &_line_input;
- ip4_address_t in_addr, out_addr;
- u16 lo_port;
- snat_det_map_t *dm;
- clib_error_t *error = 0;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "%U", unformat_ip4_address, &in_addr))
- ;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- dm = snat_det_map_by_user (sm, &in_addr);
- if (!dm)
- vlib_cli_output (vm, "no match");
- else
- {
- snat_det_forward (dm, &in_addr, &out_addr, &lo_port);
- vlib_cli_output (vm, "%U:<%d-%d>", format_ip4_address, &out_addr,
- lo_port, lo_port + dm->ports_per_host - 1);
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-static clib_error_t *
-snat_det_reverse_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- unformat_input_t _line_input, *line_input = &_line_input;
- ip4_address_t in_addr, out_addr;
- u32 out_port;
- snat_det_map_t *dm;
- clib_error_t *error = 0;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat
- (line_input, "%U:%d", unformat_ip4_address, &out_addr, &out_port))
- ;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (out_port < 1024 || out_port > 65535)
- {
- error = clib_error_return (0, "wrong port, must be <1024-65535>");
- goto done;
- }
-
- dm = snat_det_map_by_out (sm, &out_addr);
- if (!dm)
- vlib_cli_output (vm, "no match");
- else
- {
- snat_det_reverse (dm, &out_addr, (u16) out_port, &in_addr);
- vlib_cli_output (vm, "%U", format_ip4_address, &in_addr);
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
static clib_error_t *
set_timeout_command_fn (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
return 0;
}
-static clib_error_t *
-nat44_det_show_sessions_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
- int i;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- vlib_cli_output (vm, "NAT44 deterministic sessions:");
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- vec_foreach_index (i, dm->sessions)
- {
- ses = vec_elt_at_index (dm->sessions, i);
- if (ses->in_port)
- vlib_cli_output (vm, " %U", format_det_map_ses, dm, ses, &i);
- }
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-static clib_error_t *
-snat_det_close_session_out_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- unformat_input_t _line_input, *line_input = &_line_input;
- ip4_address_t out_addr, ext_addr, in_addr;
- u32 out_port, ext_port;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
- snat_det_out_key_t key;
- clib_error_t *error = 0;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "%U:%d %U:%d",
- unformat_ip4_address, &out_addr, &out_port,
- unformat_ip4_address, &ext_addr, &ext_port))
- ;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- unformat_free (line_input);
-
- dm = snat_det_map_by_out (sm, &out_addr);
- if (!dm)
- vlib_cli_output (vm, "no match");
- else
- {
- snat_det_reverse (dm, &ext_addr, (u16) out_port, &in_addr);
- key.ext_host_addr = out_addr;
- key.ext_host_port = ntohs ((u16) ext_port);
- key.out_port = ntohs ((u16) out_port);
- ses = snat_det_get_ses_by_out (dm, &out_addr, key.as_u64);
- if (!ses)
- vlib_cli_output (vm, "no match");
- else
- snat_det_ses_close (dm, ses);
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-static clib_error_t *
-snat_det_close_session_in_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- snat_main_t *sm = &snat_main;
- unformat_input_t _line_input, *line_input = &_line_input;
- ip4_address_t in_addr, ext_addr;
- u32 in_port, ext_port;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
- snat_det_out_key_t key;
- clib_error_t *error = 0;
-
- if (!sm->deterministic)
- return clib_error_return (0, SUPPORTED_ONLY_IN_DET_MODE_STR);
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "%U:%d %U:%d",
- unformat_ip4_address, &in_addr, &in_port,
- unformat_ip4_address, &ext_addr, &ext_port))
- ;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- unformat_free (line_input);
-
- dm = snat_det_map_by_user (sm, &in_addr);
- if (!dm)
- vlib_cli_output (vm, "no match");
- else
- {
- key.ext_host_addr = ext_addr;
- key.ext_host_port = ntohs ((u16) ext_port);
- ses =
- snat_det_find_ses_by_in (dm, &in_addr, ntohs ((u16) in_port), key);
- if (!ses)
- vlib_cli_output (vm, "no match");
- else
- snat_det_ses_close (dm, ses);
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
/* *INDENT-OFF* */
/*?
* Set values of timeouts for NAT sessions (in seconds), use:
* vpp# set nat timeout udp 120 tcp-established 7500 tcp-transitory 250 icmp 90
* To reset default values use:
- * vpp# set nat44 deterministic timeout reset
+ * vpp# set nat timeout reset
* @cliexend
?*/
VLIB_CLI_COMMAND (set_timeout_command, static) = {
.function = snat_forwarding_set_command_fn,
};
-/*?
- * @cliexpar
- * @cliexstart{nat44 deterministic add}
- * Create bijective mapping of inside address to outside address and port range
- * pairs, with the purpose of enabling deterministic NAT to reduce logging in
- * CGN deployments.
- * To create deterministic mapping between inside network 10.0.0.0/18 and
- * outside network 1.1.1.0/30 use:
- * # vpp# nat44 deterministic add in 10.0.0.0/18 out 1.1.1.0/30
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (snat_det_map_command, static) = {
- .path = "nat44 deterministic add",
- .short_help = "nat44 deterministic add in <addr>/<plen> out <addr>/<plen> [del]",
- .function = snat_det_map_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexpstart{show nat44 deterministic mappings}
- * Show NAT44 deterministic mappings
- * vpp# show nat44 deterministic mappings
- * NAT44 deterministic mappings:
- * in 10.0.0.0/24 out 1.1.1.1/32
- * outside address sharing ratio: 256
- * number of ports per inside host: 252
- * sessions number: 0
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (nat44_det_show_mappings_command, static) = {
- .path = "show nat44 deterministic mappings",
- .short_help = "show nat44 deterministic mappings",
- .function = nat44_det_show_mappings_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{nat44 deterministic forward}
- * Return outside address and port range from inside address for deterministic
- * NAT.
- * To obtain outside address and port of inside host use:
- * vpp# nat44 deterministic forward 10.0.0.2
- * 1.1.1.0:<1054-1068>
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (snat_det_forward_command, static) = {
- .path = "nat44 deterministic forward",
- .short_help = "nat44 deterministic forward <addr>",
- .function = snat_det_forward_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{nat44 deterministic reverse}
- * Return inside address from outside address and port for deterministic NAT.
- * To obtain inside host address from outside address and port use:
- * #vpp nat44 deterministic reverse 1.1.1.1:1276
- * 10.0.16.16
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (snat_det_reverse_command, static) = {
- .path = "nat44 deterministic reverse",
- .short_help = "nat44 deterministic reverse <addr>:<port>",
- .function = snat_det_reverse_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{show nat44 deterministic sessions}
- * Show NAT44 deterministic sessions.
- * vpp# show nat44 deterministic sessions
- * NAT44 deterministic sessions:
- * in 10.0.0.3:3005 out 1.1.1.2:1146 external host 172.16.1.2:3006 state: udp-active expire: 306
- * in 10.0.0.3:3000 out 1.1.1.2:1141 external host 172.16.1.2:3001 state: udp-active expire: 306
- * in 10.0.0.4:3005 out 1.1.1.2:1177 external host 172.16.1.2:3006 state: udp-active expire: 306
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (nat44_det_show_sessions_command, static) = {
- .path = "show nat44 deterministic sessions",
- .short_help = "show nat44 deterministic sessions",
- .function = nat44_det_show_sessions_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{nat44 deterministic close session out}
- * Close session using outside ip address and port
- * and external ip address and port, use:
- * vpp# nat44 deterministic close session out 1.1.1.1:1276 2.2.2.2:2387
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (snat_det_close_sesion_out_command, static) = {
- .path = "nat44 deterministic close session out",
- .short_help = "nat44 deterministic close session out "
- "<out_addr>:<out_port> <ext_addr>:<ext_port>",
- .function = snat_det_close_session_out_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{nat44 deterministic close session in}
- * Close session using inside ip address and port
- * and external ip address and port, use:
- * vpp# nat44 deterministic close session in 3.3.3.3:3487 2.2.2.2:2387
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (snat_det_close_session_in_command, static) = {
- .path = "nat44 deterministic close session in",
- .short_help = "nat44 deterministic close session in "
- "<in_addr>:<in_port> <ext_addr>:<ext_port>",
- .function = snat_det_close_session_in_fn,
-};
-
/* *INDENT-ON* */
/*
*/
#include <nat/nat.h>
-#include <nat/nat_det.h>
#include <nat/nat64.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ip/ip_types_api.h>
#include <nat/nat44/ed_inlines.h>
+#include <nat/nat_ipfix_logging.h>
#define vl_api_nat44_add_del_lb_static_mapping_t_endian vl_noop_handler
#define vl_api_nat44_nat44_lb_static_mapping_details_t_endian vl_noop_handler
rmp->static_mapping_only = sm->static_mapping_only;
rmp->static_mapping_connection_tracking =
sm->static_mapping_connection_tracking;
- rmp->deterministic = sm->deterministic;
+ rmp->deterministic = 0;
rmp->endpoint_dependent = sm->endpoint_dependent;
rmp->out2in_dpo = sm->out2in_dpo;
//rmp->dslite_ce = dm->is_ce;
uword *bitmap = 0;
u64 mask;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
mask = clib_net_to_host_u64 (mp->worker_mask);
if (sm->num_workers < 2)
snat_main_t *sm = &snat_main;
u32 *worker_index;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
int rv = 0;
u16 port_start, port_end;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
switch (mp->alg)
{
case NAT_ADDR_AND_PORT_ALLOC_ALG_DEFAULT:
int rv = 0;
u32 *tmp;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
if (sm->static_mapping_only)
{
rv = VNET_API_ERROR_FEATURE_DISABLED;
snat_main_t *sm = &snat_main;
snat_address_t *a;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
u32 sw_if_index = ntohl (mp->sw_if_index);
int rv = 0;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
VALIDATE_SW_IF_INDEX (mp);
rv = snat_interface_add_del_output_feature (sw_if_index,
!mp->is_add);
BAD_SW_IF_INDEX_LABEL;
-send_reply:
REPLY_MACRO (VL_API_NAT44_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
}
snat_main_t *sm = &snat_main;
snat_interface_t *i;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
nat_protocol_t proto;
u8 *tag = 0;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
mp->flags & NAT_API_IS_OUT2IN_ONLY, tag, 0);
vec_free (tag);
-send_reply:
REPLY_MACRO (VL_API_NAT44_ADD_DEL_STATIC_MAPPING_REPLY);
}
snat_static_map_resolve_t *rp;
int j;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
nat_protocol_t proto = NAT_PROTOCOL_OTHER;
u8 *tag = 0;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
if (!(mp->flags & NAT_API_IS_ADDR_ONLY))
{
port = mp->port;
proto, mp->is_add, 0, 0, tag, 1);
vec_free (tag);
-send_reply:
REPLY_MACRO (VL_API_NAT44_ADD_DEL_IDENTITY_MAPPING_REPLY);
}
snat_static_map_resolve_t *rp;
int j;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
int rv = 0;
u8 is_del;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
is_del = !mp->is_add;
VALIDATE_SW_IF_INDEX (mp);
mp->flags & NAT_API_IS_TWICE_NAT);
BAD_SW_IF_INDEX_LABEL;
-send_reply:
REPLY_MACRO (VL_API_NAT44_ADD_DEL_INTERFACE_ADDR_REPLY);
}
snat_main_t *sm = &snat_main;
u32 *i;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
snat_main_per_thread_data_t *tsm;
snat_user_t *u;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
dlist_elt_t *head, *elt;
ip4_header_t ip;
- if (sm->deterministic)
- return;
-
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
u8 is_in;
nat_protocol_t proto;
- if (sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
memcpy (&addr.as_u8, mp->address, 4);
port = mp->port;
vrf_id = clib_net_to_host_u32 (mp->vrf_id);
else
rv = nat44_del_session (sm, &addr, port, proto, vrf_id, is_in);
-send_reply:
REPLY_MACRO (VL_API_NAT44_DEL_SESSION_REPLY);
}
FINISH;
}
-/*******************************/
-/*** Deterministic NAT (CGN) ***/
-/*******************************/
-
-static void
-vl_api_nat_det_add_del_map_t_handler (vl_api_nat_det_add_del_map_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_det_add_del_map_reply_t *rmp;
- int rv = 0;
- ip4_address_t in_addr, out_addr;
-
- if (!sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
- clib_memcpy (&in_addr, mp->in_addr, 4);
- clib_memcpy (&out_addr, mp->out_addr, 4);
- rv = snat_det_add_map (sm, &in_addr, mp->in_plen, &out_addr,
- mp->out_plen, mp->is_add);
-
-send_reply:
- REPLY_MACRO (VL_API_NAT_DET_ADD_DEL_MAP_REPLY);
-}
-
-static void *
-vl_api_nat_det_add_del_map_t_print (vl_api_nat_det_add_del_map_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_add_del_map ");
- s = format (s, "inside address %U/%d outside address %U/%d\n",
- format_ip4_address, mp->in_addr, mp->in_plen,
- format_ip4_address, mp->out_addr, mp->out_plen);
-
- FINISH;
-}
-
-static void
-vl_api_nat_det_forward_t_handler (vl_api_nat_det_forward_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_det_forward_reply_t *rmp;
- int rv = 0;
- u16 lo_port = 0, hi_port = 0;
- snat_det_map_t *dm;
- ip4_address_t in_addr, out_addr;
-
- if (!sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_DET_FORWARD_REPLY);
- return;
- }
-
- out_addr.as_u32 = 0;
- clib_memcpy (&in_addr, mp->in_addr, 4);
- dm = snat_det_map_by_user (sm, &in_addr);
- if (!dm)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
-
- snat_det_forward (dm, &in_addr, &out_addr, &lo_port);
- hi_port = lo_port + dm->ports_per_host - 1;
-
-send_reply:
- /* *INDENT-OFF* */
- REPLY_MACRO2 (VL_API_NAT_DET_FORWARD_REPLY,
- ({
- rmp->out_port_lo = ntohs (lo_port);
- rmp->out_port_hi = ntohs (hi_port);
- clib_memcpy (rmp->out_addr, &out_addr, 4);
- }))
- /* *INDENT-ON* */
-}
-
-static void *
-vl_api_nat_det_forward_t_print (vl_api_nat_det_forward_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_forward");
- s = format (s, "inside ip address %U\n", format_ip4_address, mp->in_addr);
-
- FINISH;
-}
-
-static void
-vl_api_nat_det_reverse_t_handler (vl_api_nat_det_reverse_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_det_reverse_reply_t *rmp;
- int rv = 0;
- ip4_address_t out_addr, in_addr;
- snat_det_map_t *dm;
-
- if (!sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- REPLY_MACRO (VL_API_NAT_DET_REVERSE_REPLY);
- return;
- }
-
- in_addr.as_u32 = 0;
- clib_memcpy (&out_addr, mp->out_addr, 4);
- dm = snat_det_map_by_out (sm, &out_addr);
- if (!dm)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
-
- snat_det_reverse (dm, &out_addr, htons (mp->out_port), &in_addr);
-
-send_reply:
- /* *INDENT-OFF* */
- REPLY_MACRO2 (VL_API_NAT_DET_REVERSE_REPLY,
- ({
- clib_memcpy (rmp->in_addr, &in_addr, 4);
- }))
- /* *INDENT-ON* */
-}
-
-static void *
-vl_api_nat_det_reverse_t_print (vl_api_nat_det_reverse_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_reverse");
- s = format (s, "outside ip address %U outside port %d",
- format_ip4_address, mp->out_addr, ntohs (mp->out_port));
-
- FINISH;
-}
-
-static void
-sent_nat_det_map_details (snat_det_map_t * m, vl_api_registration_t * reg,
- u32 context)
-{
- vl_api_nat_det_map_details_t *rmp;
- snat_main_t *sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_MAP_DETAILS + sm->msg_id_base);
- clib_memcpy (rmp->in_addr, &m->in_addr, 4);
- rmp->in_plen = m->in_plen;
- clib_memcpy (rmp->out_addr, &m->out_addr, 4);
- rmp->out_plen = m->out_plen;
- rmp->sharing_ratio = htonl (m->sharing_ratio);
- rmp->ports_per_host = htons (m->ports_per_host);
- rmp->ses_num = htonl (m->ses_num);
- rmp->context = context;
-
- vl_api_send_msg (reg, (u8 *) rmp);
-}
-
-static void
-vl_api_nat_det_map_dump_t_handler (vl_api_nat_det_map_dump_t * mp)
-{
- vl_api_registration_t *reg;
- snat_main_t *sm = &snat_main;
- snat_det_map_t *m;
-
- if (!sm->deterministic)
- return;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- /* *INDENT-OFF* */
- vec_foreach(m, sm->det_maps)
- sent_nat_det_map_details(m, reg, mp->context);
- /* *INDENT-ON* */
-}
-
-static void *
-vl_api_nat_det_map_dump_t_print (vl_api_nat_det_map_dump_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_map_dump ");
-
- FINISH;
-}
-
-static void
-vl_api_nat_det_close_session_out_t_handler (vl_api_nat_det_close_session_out_t
- * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_det_close_session_out_reply_t *rmp;
- ip4_address_t out_addr, ext_addr, in_addr;
- snat_det_out_key_t key;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
- int rv = 0;
-
- if (!sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
- clib_memcpy (&out_addr, mp->out_addr, 4);
- clib_memcpy (&ext_addr, mp->ext_addr, 4);
-
- dm = snat_det_map_by_out (sm, &out_addr);
- if (!dm)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
- snat_det_reverse (dm, &ext_addr, ntohs (mp->out_port), &in_addr);
- key.ext_host_addr = ext_addr;
- key.ext_host_port = mp->ext_port;
- key.out_port = mp->out_port;
- ses = snat_det_get_ses_by_out (dm, &in_addr, key.as_u64);
- if (!ses)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
- snat_det_ses_close (dm, ses);
-
-send_reply:
- REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
-}
-
-static void *
-vl_api_nat_det_close_session_out_t_print (vl_api_nat_det_close_session_out_t *
- mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_close_session_out ");
- s = format (s, "out_addr %U out_port %d "
- "ext_addr %U ext_port %d\n",
- format_ip4_address, mp->out_addr, ntohs (mp->out_port),
- format_ip4_address, mp->ext_addr, ntohs (mp->ext_port));
-
- FINISH;
-}
-
-static void
-vl_api_nat_det_close_session_in_t_handler (vl_api_nat_det_close_session_in_t *
- mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat_det_close_session_in_reply_t *rmp;
- ip4_address_t in_addr, ext_addr;
- snat_det_out_key_t key;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
- int rv = 0;
-
- if (!sm->deterministic)
- {
- rv = VNET_API_ERROR_UNSUPPORTED;
- goto send_reply;
- }
-
- clib_memcpy (&in_addr, mp->in_addr, 4);
- clib_memcpy (&ext_addr, mp->ext_addr, 4);
-
- dm = snat_det_map_by_user (sm, &in_addr);
- if (!dm)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
- key.ext_host_addr = ext_addr;
- key.ext_host_port = mp->ext_port;
- ses = snat_det_find_ses_by_in (dm, &in_addr, mp->in_port, key);
- if (!ses)
- {
- rv = VNET_API_ERROR_NO_SUCH_ENTRY;
- goto send_reply;
- }
- snat_det_ses_close (dm, ses);
-
-send_reply:
- REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
-}
-
-static void *
-vl_api_nat_det_close_session_in_t_print (vl_api_nat_det_close_session_in_t *
- mp, void *handle)
-{
- u8 *s;
- s = format (0, "SCRIPT: nat_det_close_session_in ");
- s = format (s, "in_addr %U in_port %d ext_addr %U ext_port %d\n",
- format_ip4_address, mp->in_addr, ntohs (mp->in_port),
- format_ip4_address, mp->ext_addr, ntohs (mp->ext_port));
-
- FINISH;
-}
-
-static void
-send_nat_det_session_details (snat_det_session_t * s,
- vl_api_registration_t * reg, u32 context)
-{
- vl_api_nat_det_session_details_t *rmp;
- snat_main_t *sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_SESSION_DETAILS + sm->msg_id_base);
- rmp->in_port = s->in_port;
- clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
- rmp->ext_port = s->out.ext_host_port;
- rmp->out_port = s->out.out_port;
- rmp->state = s->state;
- rmp->expire = ntohl (s->expire);
- rmp->context = context;
-
- vl_api_send_msg (reg, (u8 *) rmp);
-}
-
-static void
-vl_api_nat_det_session_dump_t_handler (vl_api_nat_det_session_dump_t * mp)
-{
- vl_api_registration_t *reg;
- snat_main_t *sm = &snat_main;
- ip4_address_t user_addr;
- snat_det_map_t *dm;
- snat_det_session_t *s, empty_ses;
- u16 i;
-
- if (!sm->deterministic)
- return;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- clib_memset (&empty_ses, 0, sizeof (empty_ses));
- clib_memcpy (&user_addr, mp->user_addr, 4);
- dm = snat_det_map_by_user (sm, &user_addr);
- if (!dm)
- return;
-
- s = dm->sessions + snat_det_user_ses_offset (&user_addr, dm->in_plen);
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- if (s->out.as_u64)
- send_nat_det_session_details (s, reg, mp->context);
- s++;
- }
-}
-
-static void *
-vl_api_nat_det_session_dump_t_print (vl_api_nat_det_session_dump_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat_det_session_dump ");
- s = format (s, "user_addr %U\n", format_ip4_address, mp->user_addr);
-
- FINISH;
-}
-
/*************/
/*** NAT64 ***/
/*************/
_(NAT44_DEL_SESSION, nat44_del_session) \
_(NAT44_FORWARDING_ENABLE_DISABLE, nat44_forwarding_enable_disable) \
_(NAT44_FORWARDING_IS_ENABLED, nat44_forwarding_is_enabled) \
-_(NAT_DET_ADD_DEL_MAP, nat_det_add_del_map) \
-_(NAT_DET_FORWARD, nat_det_forward) \
-_(NAT_DET_REVERSE, nat_det_reverse) \
-_(NAT_DET_MAP_DUMP, nat_det_map_dump) \
-_(NAT_DET_CLOSE_SESSION_OUT, nat_det_close_session_out) \
-_(NAT_DET_CLOSE_SESSION_IN, nat_det_close_session_in) \
-_(NAT_DET_SESSION_DUMP, nat_det_session_dump) \
_(NAT64_ADD_DEL_POOL_ADDR_RANGE, nat64_add_del_pool_addr_range) \
_(NAT64_POOL_ADDR_DUMP, nat64_pool_addr_dump) \
_(NAT64_ADD_DEL_INTERFACE, nat64_add_del_interface) \
+++ /dev/null
-/*
- * snat_det.c - deterministic NAT
- *
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * @file
- * @brief deterministic NAT
- */
-
-#include <nat/nat_det.h>
-
-
-/**
- * @brief Add/delete deterministic NAT mapping.
- *
- * Create bijective mapping of inside address to outside address and port range
- * pairs, with the purpose of enabling deterministic NAT to reduce logging in
- * CGN deployments.
- *
- * @param sm SNAT main.
- * @param in_addr Inside network address.
- * @param in_plen Inside network prefix length.
- * @param out_addr Outside network address.
- * @param out_plen Outside network prefix length.
- * @param is_add If 0 delete, otherwise add.
- */
-int
-snat_det_add_map (snat_main_t * sm, ip4_address_t * in_addr, u8 in_plen,
- ip4_address_t * out_addr, u8 out_plen, int is_add)
-{
- snat_det_map_t *det_map;
- static snat_det_session_t empty_snat_det_session = { 0 };
- snat_interface_t *i;
- ip4_address_t in_cmp, out_cmp;
- u8 found = 0;
-
- in_cmp.as_u32 = in_addr->as_u32 & ip4_main.fib_masks[in_plen];
- out_cmp.as_u32 = out_addr->as_u32 & ip4_main.fib_masks[out_plen];
- vec_foreach (det_map, sm->det_maps)
- {
- /* Checking for overlapping addresses to be added here */
- if (det_map->in_addr.as_u32 == in_cmp.as_u32 &&
- det_map->in_plen == in_plen &&
- det_map->out_addr.as_u32 == out_cmp.as_u32 &&
- det_map->out_plen == out_plen)
- {
- found = 1;
- break;
- }
- }
-
- /* If found, don't add again */
- if (found && is_add)
- return VNET_API_ERROR_VALUE_EXIST;
-
- /* If not found, don't delete */
- if (!found && !is_add)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- if (is_add)
- {
- u32 num_sessions = (1 << (32 - in_plen));
- if (num_sessions > UINT32_MAX / 1000)
- {
- // don't let it overflow
- return VNET_API_ERROR_INVALID_VALUE;
- }
- else
- {
- num_sessions = num_sessions * 1000 - 1;
- }
-
- u32 sharing_ratio = (1 << (32 - in_plen)) / (1 << (32 - out_plen));
- if (!sharing_ratio)
- {
- // avoid division by zero
- return VNET_API_ERROR_INVALID_VALUE;
- }
-
- pool_get (sm->det_maps, det_map);
- clib_memset (det_map, 0, sizeof (*det_map));
- det_map->in_addr.as_u32 = in_cmp.as_u32;
- det_map->in_plen = in_plen;
- det_map->out_addr.as_u32 = out_cmp.as_u32;
- det_map->out_plen = out_plen;
- det_map->sharing_ratio = sharing_ratio;
- det_map->ports_per_host = (65535 - 1023) / det_map->sharing_ratio;
-
- vec_validate_init_empty (det_map->sessions, num_sessions,
- empty_snat_det_session);
- }
- else
- {
- vec_free (det_map->sessions);
- vec_del1 (sm->det_maps, det_map - sm->det_maps);
- }
-
- /* Add/del external address range to FIB */
- /* *INDENT-OFF* */
- pool_foreach (i, sm->interfaces,
- ({
- if (nat_interface_is_inside(i))
- continue;
-
- snat_add_del_addr_to_fib(out_addr, out_plen, i->sw_if_index, is_add);
- break;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-/**
- * @brief The 'nat-det-expire-walk' process's main loop.
- *
- * Check expire time for active sessions.
- */
-static uword
-snat_det_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
- vlib_frame_t * f)
-{
- snat_main_t *sm = &snat_main;
- snat_det_map_t *dm;
- snat_det_session_t *ses;
-
- while (sm->deterministic)
- {
- vlib_process_wait_for_event_or_clock (vm, 10.0);
- vlib_process_get_events (vm, NULL);
- u32 now = (u32) vlib_time_now (vm);
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- vec_foreach(ses, dm->sessions)
- {
- /* Delete if session expired */
- if (ses->in_port && (ses->expire < now))
- snat_det_ses_close (dm, ses);
- }
- }));
- /* *INDENT-ON* */
- }
-
- return 0;
-}
-
-static vlib_node_registration_t snat_det_expire_walk_node;
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (snat_det_expire_walk_node, static) = {
- .function = snat_det_expire_walk_fn,
- .type = VLIB_NODE_TYPE_PROCESS,
- .name =
- "nat-det-expire-walk",
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
+++ /dev/null
-/*
- * snat_det.h - deterministic NAT definitions
- *
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * @file
- * @brief deterministic NAT definitions
- */
-
-#ifndef __included_nat_det_h__
-#define __included_nat_det_h__
-
-#include <vnet/ip/ip.h>
-#include <nat/nat.h>
-#include <nat/nat_ipfix_logging.h>
-
-
-#define SNAT_DET_SES_PER_USER 1000
-
-
-int snat_det_add_map (snat_main_t * sm, ip4_address_t * in_addr, u8 in_plen,
- ip4_address_t * out_addr, u8 out_plen, int is_add);
-
-always_inline int
-is_addr_in_net (ip4_address_t * addr, ip4_address_t * net, u8 plen)
-{
- if (net->as_u32 == (addr->as_u32 & ip4_main.fib_masks[plen]))
- return 1;
- return 0;
-}
-
-always_inline snat_det_map_t *
-snat_det_map_by_user (snat_main_t * sm, ip4_address_t * user_addr)
-{
- snat_det_map_t *dm;
-
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- if (is_addr_in_net(user_addr, &dm->in_addr, dm->in_plen))
- return dm;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-always_inline snat_det_map_t *
-snat_det_map_by_out (snat_main_t * sm, ip4_address_t * out_addr)
-{
- snat_det_map_t *dm;
-
- /* *INDENT-OFF* */
- pool_foreach (dm, sm->det_maps,
- ({
- if (is_addr_in_net(out_addr, &dm->out_addr, dm->out_plen))
- return dm;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-always_inline void
-snat_det_forward (snat_det_map_t * dm, ip4_address_t * in_addr,
- ip4_address_t * out_addr, u16 * lo_port)
-{
- u32 in_offset, out_offset;
-
- in_offset = clib_net_to_host_u32 (in_addr->as_u32) -
- clib_net_to_host_u32 (dm->in_addr.as_u32);
- out_offset = in_offset / dm->sharing_ratio;
- out_addr->as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (dm->out_addr.as_u32) +
- out_offset);
- *lo_port = 1024 + dm->ports_per_host * (in_offset % dm->sharing_ratio);
-}
-
-always_inline void
-snat_det_reverse (snat_det_map_t * dm, ip4_address_t * out_addr, u16 out_port,
- ip4_address_t * in_addr)
-{
- u32 in_offset1, in_offset2, out_offset;
-
- out_offset = clib_net_to_host_u32 (out_addr->as_u32) -
- clib_net_to_host_u32 (dm->out_addr.as_u32);
- in_offset1 = out_offset * dm->sharing_ratio;
- in_offset2 = (out_port - 1024) / dm->ports_per_host;
- in_addr->as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (dm->in_addr.as_u32) +
- in_offset1 + in_offset2);
-}
-
-always_inline u32
-snat_det_user_ses_offset (ip4_address_t * addr, u8 plen)
-{
- return (clib_net_to_host_u32 (addr->as_u32) & pow2_mask (32 - plen)) *
- SNAT_DET_SES_PER_USER;
-}
-
-always_inline snat_det_session_t *
-snat_det_get_ses_by_out (snat_det_map_t * dm, ip4_address_t * in_addr,
- u64 out_key)
-{
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- if (dm->sessions[i + user_offset].out.as_u64 == out_key)
- return &dm->sessions[i + user_offset];
- }
-
- return 0;
-}
-
-always_inline snat_det_session_t *
-snat_det_find_ses_by_in (snat_det_map_t * dm, ip4_address_t * in_addr,
- u16 in_port, snat_det_out_key_t out_key)
-{
- snat_det_session_t *ses;
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- ses = &dm->sessions[i + user_offset];
- if (ses->in_port == in_port &&
- ses->out.ext_host_addr.as_u32 == out_key.ext_host_addr.as_u32 &&
- ses->out.ext_host_port == out_key.ext_host_port)
- return &dm->sessions[i + user_offset];
- }
-
- return 0;
-}
-
-always_inline snat_det_session_t *
-snat_det_ses_create (u32 thread_index, snat_det_map_t * dm,
- ip4_address_t * in_addr, u16 in_port,
- snat_det_out_key_t * out)
-{
- u32 user_offset;
- u16 i;
-
- user_offset = snat_det_user_ses_offset (in_addr, dm->in_plen);
-
- for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
- {
- if (!dm->sessions[i + user_offset].in_port)
- {
- if (clib_atomic_bool_cmp_and_swap
- (&dm->sessions[i + user_offset].in_port, 0, in_port))
- {
- dm->sessions[i + user_offset].out.as_u64 = out->as_u64;
- dm->sessions[i + user_offset].state = SNAT_SESSION_UNKNOWN;
- dm->sessions[i + user_offset].expire = 0;
- clib_atomic_add_fetch (&dm->ses_num, 1);
- return &dm->sessions[i + user_offset];
- }
- }
- }
-
- snat_ipfix_logging_max_entries_per_user (thread_index,
- SNAT_DET_SES_PER_USER,
- in_addr->as_u32);
- return 0;
-}
-
-always_inline void
-snat_det_ses_close (snat_det_map_t * dm, snat_det_session_t * ses)
-{
- if (clib_atomic_bool_cmp_and_swap (&ses->in_port, ses->in_port, 0))
- {
- ses->out.as_u64 = 0;
- clib_atomic_add_fetch (&dm->ses_num, -1);
- }
-}
-
-#endif /* __included_nat_det_h__ */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
#include <nat/nat.h>
#include <nat/nat_inlines.h>
-#include <nat/nat_det.h>
uword
unformat_nat_protocol (unformat_input_t * input, va_list * args)
return s;
}
-u8 *
-format_det_map_ses (u8 * s, va_list * args)
-{
- snat_det_map_t *det_map = va_arg (*args, snat_det_map_t *);
- ip4_address_t in_addr, out_addr;
- u32 in_offset, out_offset;
- snat_det_session_t *ses = va_arg (*args, snat_det_session_t *);
- u32 *i = va_arg (*args, u32 *);
-
- u32 user_index = *i / SNAT_DET_SES_PER_USER;
- in_addr.as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->in_addr.as_u32) +
- user_index);
- in_offset =
- clib_net_to_host_u32 (in_addr.as_u32) -
- clib_net_to_host_u32 (det_map->in_addr.as_u32);
- out_offset = in_offset / det_map->sharing_ratio;
- out_addr.as_u32 =
- clib_host_to_net_u32 (clib_net_to_host_u32 (det_map->out_addr.as_u32) +
- out_offset);
- s =
- format (s,
- "in %U:%d out %U:%d external host %U:%d state: %U expire: %d\n",
- format_ip4_address, &in_addr, clib_net_to_host_u16 (ses->in_port),
- format_ip4_address, &out_addr,
- clib_net_to_host_u16 (ses->out.out_port), format_ip4_address,
- &ses->out.ext_host_addr,
- clib_net_to_host_u16 (ses->out.ext_host_port),
- format_snat_session_state, ses->state, ses->expire);
-
- return s;
-}
-
/*
* fd.io coding-style-patch-verification: ON
*
a.src_port = src_port ? src_port : UDP_DST_PORT_ipfix;
a.flow_data_callback = data_callback;
- if (sm->deterministic)
+ /* TODO: ipfix needs to be separated from NAT base plugin
+ a.rewrite_callback = snat_template_rewrite_max_entries_per_usr;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
{
- a.rewrite_callback = snat_template_rewrite_max_entries_per_usr;
-
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
}
- else
+ */
+ a.rewrite_callback = snat_template_rewrite_nat44_session;
+
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
{
- a.rewrite_callback = snat_template_rewrite_nat44_session;
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ a.rewrite_callback = snat_template_rewrite_addr_exhausted;
- a.rewrite_callback = snat_template_rewrite_addr_exhausted;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
+ {
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ a.rewrite_callback = nat_template_rewrite_max_sessions;
- a.rewrite_callback = nat_template_rewrite_max_sessions;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
+ {
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ a.rewrite_callback = nat_template_rewrite_max_bibs;
- a.rewrite_callback = nat_template_rewrite_max_bibs;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
+ {
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ a.rewrite_callback = nat_template_rewrite_nat64_bib;
- a.rewrite_callback = nat_template_rewrite_nat64_bib;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
+ {
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ a.rewrite_callback = nat_template_rewrite_nat64_session;
- a.rewrite_callback = nat_template_rewrite_nat64_session;
+ rv = vnet_flow_report_add_del (frm, &a, NULL);
+ if (rv)
+ {
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
+ }
+
+ if (sm->endpoint_dependent)
+ {
+ a.rewrite_callback = snat_template_rewrite_max_entries_per_usr;
rv = vnet_flow_report_add_del (frm, &a, NULL);
if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
-
- if (sm->endpoint_dependent)
{
- a.rewrite_callback = snat_template_rewrite_max_entries_per_usr;
-
- rv = vnet_flow_report_add_del (frm, &a, NULL);
- if (rv)
- {
- nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
- return -1;
- }
+ nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv);
+ return -1;
}
}
-
/*
* nat.c - skeleton vpp-api-test plug-in
*
_(nat_set_workers_reply) \
_(nat44_add_del_interface_addr_reply) \
_(nat_ipfix_enable_disable_reply) \
-_(nat_det_add_del_map_reply) \
-_(nat_set_timeouts_reply) \
-_(nat_det_close_session_out_reply) \
-_(nat_det_close_session_in_reply)
+_(nat_set_timeouts_reply)
#define _(n) \
static void vl_api_##n##_t_handler \
(vl_api_##n##_t * mp) \
{ \
- vat_main_t * vam = snat_test_main.vat_main; \
+ vat_main_t * vam = snat_test_main.vat_main; \
i32 retval = ntohl(mp->retval); \
if (vam->async_mode) { \
vam->async_errors += (retval < 0); \
nat_ipfix_enable_disable_reply) \
_(NAT44_USER_DETAILS, nat44_user_details) \
_(NAT44_USER_SESSION_DETAILS, nat44_user_session_details) \
-_(NAT_DET_ADD_DEL_MAP_REPLY, nat_det_add_del_map_reply) \
-_(NAT_DET_FORWARD_REPLY, nat_det_forward_reply) \
-_(NAT_DET_REVERSE_REPLY, nat_det_reverse_reply) \
-_(NAT_DET_MAP_DETAILS, nat_det_map_details) \
_(NAT_SET_TIMEOUTS_REPLY, nat_set_timeouts_reply) \
-_(NAT_GET_TIMEOUTS_REPLY, nat_get_timeouts_reply) \
-_(NAT_DET_CLOSE_SESSION_OUT_REPLY, \
- nat_det_close_session_out_reply) \
-_(NAT_DET_CLOSE_SESSION_IN_REPLY, \
- nat_det_close_session_in_reply) \
-_(NAT_DET_SESSION_DETAILS, nat_det_session_details)
+_(NAT_GET_TIMEOUTS_REPLY, nat_get_timeouts_reply)
static int api_nat44_add_del_address_range (vat_main_t * vam)
{
return ret;
}
-static int api_nat_det_add_del_map (vat_main_t * vam)
-{
- unformat_input_t * i = vam->input;
- vl_api_nat_det_add_del_map_t * mp;
- ip4_address_t in_addr, out_addr;
- u32 in_plen, out_plen;
- u8 is_add = 1;
- int ret;
-
- if (unformat (i, "in %U/%d out %U/%d",
- unformat_ip4_address, &in_addr, &in_plen,
- unformat_ip4_address, &out_addr, &out_plen))
- ;
- else if (unformat (i, "del"))
- is_add = 0;
- else
- {
- clib_warning("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_ADD_DEL_MAP, mp);
- clib_memcpy(mp->in_addr, &in_addr, 4);
- mp->in_plen = in_plen;
- clib_memcpy(mp->out_addr, &out_addr, 4);
- mp->out_plen = out_plen;
- mp->is_add = is_add;
-
- S(mp);
- W (ret);
- return ret;
-}
-
-static void vl_api_nat_det_forward_reply_t_handler
- (vl_api_nat_det_forward_reply_t *mp)
-{
- snat_test_main_t * sm = &snat_test_main;
- vat_main_t *vam = sm->vat_main;
- i32 retval = ntohl(mp->retval);
-
- if (retval >= 0)
- {
- fformat (vam->ofp, "outside address %U", format_ip4_address, &mp->out_addr);
- fformat (vam->ofp, " outside port range start %d", ntohs(mp->out_port_lo));
- fformat (vam->ofp, " outside port range end %d\n", ntohs(mp->out_port_hi));
- }
-
- vam->retval = retval;
- vam->result_ready = 1;
-}
-
-static int api_nat_det_forward (vat_main_t * vam)
-{
- unformat_input_t * i = vam->input;
- vl_api_nat_det_forward_t * mp;
- ip4_address_t in_addr;
- int ret;
-
- if (unformat (i, "%U", unformat_ip4_address, &in_addr))
- ;
- else
- {
- clib_warning("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_FORWARD, mp);
- clib_memcpy(mp->in_addr, &in_addr, 4);
-
- S(mp);
- W(ret);
- return ret;
-}
-
-static void vl_api_nat_det_reverse_reply_t_handler
- (vl_api_nat_det_reverse_reply_t *mp)
-{
- snat_test_main_t * sm = &snat_test_main;
- vat_main_t *vam = sm->vat_main;
- i32 retval = ntohl(mp->retval);
-
- if (retval >= 0)
- {
- fformat (vam->ofp, "inside address %U\n", format_ip4_address, &mp->in_addr);
- }
-
- vam->retval = retval;
- vam->result_ready = 1;
-}
-
-static int api_nat_det_reverse (vat_main_t * vam)
-{
- unformat_input_t * i = vam->input;
- vl_api_nat_det_reverse_t * mp;
- ip4_address_t out_addr;
- u32 out_port;
- int ret;
-
- if (unformat (i, "%U %d", unformat_ip4_address, &out_addr, &out_port))
- ;
- else
- {
- clib_warning("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_REVERSE, mp);
- clib_memcpy(mp->out_addr, &out_addr, 4);
- mp->out_port = htons((u16)out_port);
-
- S(mp);
- W(ret);
- return ret;
-}
-
-static void vl_api_nat_det_map_details_t_handler
- (vl_api_nat_det_map_details_t *mp)
-{
- snat_test_main_t * sm = &snat_test_main;
- vat_main_t *vam = sm->vat_main;
-
- fformat (vam->ofp, "Deterministic S-NAT mapping in %U/%d out %U/%d "
- "ports per host %d sharing ratio %d "
- "number of sessions %d",
- format_ip4_address, mp->in_addr, mp->in_plen,
- format_ip4_address, mp->out_addr, mp->out_plen,
- ntohs(mp->ports_per_host), ntohl(mp->sharing_ratio),
- ntohl(mp->ses_num));
-}
-
-static int api_nat_det_map_dump(vat_main_t * vam)
-{
- vl_api_nat_det_map_dump_t * mp;
- vl_api_nat_control_ping_t *mp_ping;
- int ret;
-
- if (vam->json_output)
- {
- clib_warning ("JSON output not supported for nat_det_map_dump");
- return -99;
- }
-
- M(NAT_DET_MAP_DUMP, mp);
- S(mp);
-
- /* Use a control ping for synchronization */
- M(NAT_CONTROL_PING, mp_ping);
- S(mp_ping);
-
- W (ret);
- return ret;
-}
-
static int api_nat_set_timeouts (vat_main_t * vam)
{
unformat_input_t * i = vam->input;
return ret;
}
-static int api_nat_det_close_session_out (vat_main_t * vam)
-{
- unformat_input_t * i = vam->input;
- vl_api_nat_det_close_session_out_t * mp;
- ip4_address_t out_addr, ext_addr;
- u32 out_port, ext_port;
- int ret;
-
- if (unformat (i, "%U:%d %U:%d",
- unformat_ip4_address, &out_addr, &out_port,
- unformat_ip4_address, &ext_addr, &ext_port))
- ;
- else
- {
- clib_warning("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_CLOSE_SESSION_OUT, mp);
- clib_memcpy(mp->out_addr, &out_addr, 4);
- mp->out_port = ntohs((u16)out_port);
- clib_memcpy(mp->ext_addr, &ext_addr, 4);
- mp->ext_port = ntohs((u16)ext_port);
-
- S(mp);
- W (ret);
- return ret;
-}
-
-static int api_nat_det_close_session_in (vat_main_t * vam)
-{
- unformat_input_t * i = vam->input;
- vl_api_nat_det_close_session_in_t * mp;
- ip4_address_t in_addr, ext_addr;
- u32 in_port, ext_port;
- int ret;
-
- if (unformat (i, "%U:%d %U:%d",
- unformat_ip4_address, &in_addr, &in_port,
- unformat_ip4_address, &ext_addr, &ext_port))
- ;
- else
- {
- clib_warning("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_CLOSE_SESSION_IN, mp);
- clib_memcpy(mp->in_addr, &in_addr, 4);
- mp->in_port = ntohs((u16)in_port);
- clib_memcpy(mp->ext_addr, &ext_addr, 4);
- mp->ext_port = ntohs((u16)ext_port);
-
- S(mp);
- W (ret);
- return ret;
-}
-
-static void vl_api_nat_det_session_details_t_handler
- (vl_api_nat_det_session_details_t *mp)
-{
- snat_test_main_t * sm = &snat_test_main;
- vat_main_t *vam = sm->vat_main;
-
- fformat(vam->ofp, "deterministic session, external host address %U, "
- "external host port %d, outer port %d, inside port %d",
- format_ip4_address, mp->ext_addr, mp->ext_port,
- mp->out_port, mp->in_port);
-}
-
-static int api_nat_det_session_dump(vat_main_t * vam)
-{
- unformat_input_t* i = vam->input;
- vl_api_nat_det_session_dump_t * mp;
- vl_api_nat_control_ping_t *mp_ping;
- ip4_address_t user_addr;
- int ret;
-
- if (vam->json_output)
- {
- clib_warning ("JSON output not supported for nat_det_session_dump");
- return -99;
- }
-
- if (unformat (i, "user_addr %U", unformat_ip4_address, &user_addr))
- ;
- else
- {
- clib_warning ("unknown input '%U'", format_unformat_error, i);
- return -99;
- }
-
- M(NAT_DET_SESSION_DUMP, mp);
- clib_memcpy (&mp->user_addr, &user_addr, 4);
- S(mp);
-
- /* Use a control ping for synchronization */
- M(NAT_CONTROL_PING, mp_ping);
- S(mp_ping);
-
- W (ret);
- return ret;
-}
-
/*
* List of messages that the api test plugin sends,
* and that the data plane plugin processes
"[disable]") \
_(nat44_user_dump, "") \
_(nat44_user_session_dump, "ip_address <ip> vrf_id <table-id>") \
-_(nat_det_add_del_map, "in <in_addr>/<in_plen> out " \
- "<out_addr>/<out_plen> [del]") \
-_(nat_det_forward, "<in_addr>") \
-_(nat_det_reverse, "<out_addr> <out_port>") \
-_(nat_det_map_dump, "") \
_(nat_set_timeouts, "[udp <sec> | tcp_established <sec> | " \
"tcp_transitory <sec> | icmp <sec>]") \
-_(nat_get_timeouts, "") \
-_(nat_det_close_session_out, "<out_addr>:<out_port> " \
- "<ext_addr>:<ext_port>") \
-_(nat_det_close_session_in, "<in_addr>:<in_port> " \
- "<out_addr>:<out_port>") \
-_(nat_det_session_dump, "ip_address <user_addr>")
+_(nat_get_timeouts, "")
static void
snat_vat_api_hookup (vat_main_t *vam)
--- /dev/null
+#!/usr/bin/env python3
+
+import socket
+import struct
+import unittest
+import scapy.compat
+from time import sleep
+from framework import VppTestCase, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, UDPerror
+from scapy.layers.l2 import Ether
+from util import ppp
+
+
+class TestDET44(VppTestCase):
+ """ Deterministic NAT Test Cases """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDET44, cls).setUpClass()
+ cls.vapi.cli("set log class det44 level debug")
+
+ cls.tcp_port_in = 6303
+ cls.tcp_external_port = 6303
+ cls.udp_port_in = 6304
+ cls.udp_external_port = 6304
+ cls.icmp_id_in = 6305
+ cls.nat_addr = '10.0.0.3'
+
+ cls.create_pg_interfaces(range(3))
+ cls.interfaces = list(cls.pg_interfaces)
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.pg0.generate_remote_hosts(2)
+ cls.pg0.configure_ipv4_neighbors()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestDET44, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestDET44, self).setUp()
+ self.vapi.det44_plugin_enable_disable(enable=1)
+
+ def tearDown(self):
+ super(TestDET44, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.det44_plugin_enable_disable(enable=0)
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show det44 interfaces"))
+ self.logger.info(self.vapi.cli("show det44 timeouts"))
+ self.logger.info(self.vapi.cli("show det44 mappings"))
+ self.logger.info(self.vapi.cli("show det44 sessions"))
+
+ def verify_capture_in(self, capture, in_if):
+ """
+ Verify captured packets on inside network
+
+ :param capture: Captured packets
+ :param in_if: Inside interface
+ """
+ fired = False
+ for packet in capture:
+ try:
+ self.assert_packet_checksums_valid(packet)
+ self.assertEqual(packet[IP].dst, in_if.remote_ip4)
+ if packet.haslayer(TCP):
+ self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+ elif packet.haslayer(UDP):
+ self.assertEqual(packet[UDP].dport, self.udp_port_in)
+ else:
+ self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+ except:
+ fired = True
+ self.logger.error(ppp("Unexpected or invalid packet "
+ "(inside network):", packet))
+ if fired:
+ raise
+
+ def verify_ipfix_max_entries_per_user(self, data, limit, src_addr):
+ """
+ Verify IPFIX maximum entries per user exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum entries per user
+ :param src_addr: IPv4 source address
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(scapy.compat.orb(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 3), record[466])
+ # maxEntriesPerUser
+ self.assertEqual(struct.pack("I", limit), record[473])
+ # sourceIPv4Address
+ self.assertEqual(socket.inet_pton(socket.AF_INET, src_addr), record[8])
+
+ def initiate_tcp_session(self, in_if, out_if):
+ """
+ Initiates TCP session 3 WAY HAND SHAKE
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ """
+
+ # SYN packet in->out
+ p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="S"))
+ in_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = out_if.get_capture(1)
+ p = capture[0]
+ self.tcp_port_out = p[TCP].sport
+
+ # SYN + ACK packet out->in
+ p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
+ IP(src=out_if.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="SA"))
+ out_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ in_if.get_capture(1)
+
+ # ACK packet in->out
+ p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A"))
+ in_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ out_if.get_capture(1)
+
+ def create_stream_in(self, in_if, out_if, ttl=64):
+ """
+ Create packet stream for inside network
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ :param ttl: TTL of generated packets
+ """
+ pkts = []
+ # TCP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
+ pkts.append(p)
+
+ # UDP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ UDP(sport=self.udp_port_in, dport=self.udp_external_port))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ ICMP(id=self.icmp_id_in, type='echo-request'))
+ pkts.append(p)
+
+ return pkts
+
+ def create_stream_out(self, out_if, dst_ip=None, ttl=64):
+ """
+ Create packet stream for outside network
+
+ :param out_if: Outside interface
+ :param dst_ip: Destination IP address (Default use global NAT address)
+ :param ttl: TTL of generated packets
+ """
+ if dst_ip is None:
+ dst_ip = self.nat_addr
+ pkts = []
+ # TCP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ TCP(dport=self.tcp_port_out, sport=self.tcp_external_port))
+ pkts.append(p)
+
+ # UDP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ UDP(dport=self.udp_port_out, sport=self.udp_external_port))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ ICMP(id=self.icmp_external_id, type='echo-reply'))
+ pkts.append(p)
+
+ return pkts
+
+ def verify_capture_out(self, capture, nat_ip=None):
+ """
+ Verify captured packets on outside network
+
+ :param capture: Captured packets
+ :param nat_ip: Translated IP address (Default use global NAT address)
+ :param same_port: Source port number is not translated (Default False)
+ """
+ if nat_ip is None:
+ nat_ip = self.nat_addr
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IP].src, nat_ip)
+ if packet.haslayer(TCP):
+ self.tcp_port_out = packet[TCP].sport
+ elif packet.haslayer(UDP):
+ self.udp_port_out = packet[UDP].sport
+ else:
+ self.icmp_external_id = packet[ICMP].id
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet "
+ "(outside network):", packet))
+ raise
+
+ def test_deterministic_mode(self):
+ """ NAT plugin run deterministic mode """
+ in_addr = '172.16.255.0'
+ out_addr = '172.17.255.50'
+ in_addr_t = '172.16.255.20'
+ in_plen = 24
+ out_plen = 32
+
+ self.vapi.det44_add_del_map(is_add=1, in_addr=in_addr,
+ in_plen=in_plen, out_addr=out_addr,
+ out_plen=out_plen)
+
+ rep1 = self.vapi.det44_forward(in_addr_t)
+ self.assertEqual(str(rep1.out_addr), out_addr)
+ rep2 = self.vapi.det44_reverse(rep1.out_port_hi, out_addr)
+
+ self.assertEqual(str(rep2.in_addr), in_addr_t)
+
+ deterministic_mappings = self.vapi.det44_map_dump()
+ self.assertEqual(len(deterministic_mappings), 1)
+ dsm = deterministic_mappings[0]
+ self.assertEqual(in_addr, str(dsm.in_addr))
+ self.assertEqual(in_plen, dsm.in_plen)
+ self.assertEqual(out_addr, str(dsm.out_addr))
+ self.assertEqual(out_plen, dsm.out_plen)
+
+ def test_set_timeouts(self):
+ """ Set deterministic NAT timeouts """
+ timeouts_before = self.vapi.det44_get_timeouts()
+
+ self.vapi.det44_set_timeouts(
+ udp=timeouts_before.udp + 10,
+ tcp_established=timeouts_before.tcp_established + 10,
+ tcp_transitory=timeouts_before.tcp_transitory + 10,
+ icmp=timeouts_before.icmp + 10)
+
+ timeouts_after = self.vapi.det44_get_timeouts()
+
+ self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
+ self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
+ self.assertNotEqual(timeouts_before.tcp_established,
+ timeouts_after.tcp_established)
+ self.assertNotEqual(timeouts_before.tcp_transitory,
+ timeouts_after.tcp_transitory)
+
+ def test_in(self):
+ """ DET44 translation test (TCP, UDP, ICMP) """
+
+ nat_ip = "10.0.0.10"
+
+ self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+ in_plen=32,
+ out_addr=socket.inet_aton(nat_ip),
+ out_plen=32)
+
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+
+ # in2out
+ pkts = self.create_stream_in(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, nat_ip)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg0)
+
+ # session dump test
+ sessions = self.vapi.det44_session_dump(self.pg0.remote_ip4)
+ self.assertEqual(len(sessions), 3)
+
+ # TCP session
+ s = sessions[0]
+ self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+ self.assertEqual(s.in_port, self.tcp_port_in)
+ self.assertEqual(s.out_port, self.tcp_port_out)
+ self.assertEqual(s.ext_port, self.tcp_external_port)
+
+ # UDP session
+ s = sessions[1]
+ self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+ self.assertEqual(s.in_port, self.udp_port_in)
+ self.assertEqual(s.out_port, self.udp_port_out)
+ self.assertEqual(s.ext_port, self.udp_external_port)
+
+ # ICMP session
+ s = sessions[2]
+ self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
+ self.assertEqual(s.in_port, self.icmp_id_in)
+ self.assertEqual(s.out_port, self.icmp_external_id)
+
+ def test_multiple_users(self):
+ """ Deterministic NAT multiple users """
+
+ nat_ip = "10.0.0.10"
+ port_in = 80
+ external_port = 6303
+
+ host0 = self.pg0.remote_hosts[0]
+ host1 = self.pg0.remote_hosts[1]
+
+ self.vapi.det44_add_del_map(is_add=1, in_addr=host0.ip4, in_plen=24,
+ out_addr=socket.inet_aton(nat_ip),
+ out_plen=32)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+
+ # host0 to out
+ p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
+ IP(src=host0.ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=port_in, dport=external_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, nat_ip)
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(tcp.dport, external_port)
+ port_out0 = tcp.sport
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # host1 to out
+ p = (Ether(src=host1.mac, dst=self.pg0.local_mac) /
+ IP(src=host1.ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=port_in, dport=external_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, nat_ip)
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(tcp.dport, external_port)
+ port_out1 = tcp.sport
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(1, len(dms))
+ self.assertEqual(2, dms[0].ses_num)
+
+ # out to host0
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=nat_ip) /
+ TCP(sport=external_port, dport=port_out0))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg1.remote_ip4)
+ self.assertEqual(ip.dst, host0.ip4)
+ self.assertEqual(tcp.dport, port_in)
+ self.assertEqual(tcp.sport, external_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # out to host1
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=nat_ip) /
+ TCP(sport=external_port, dport=port_out1))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg1.remote_ip4)
+ self.assertEqual(ip.dst, host1.ip4)
+ self.assertEqual(tcp.dport, port_in)
+ self.assertEqual(tcp.sport, external_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet", p))
+ raise
+
+ # session close api test
+ self.vapi.det44_close_session_out(socket.inet_aton(nat_ip),
+ port_out1,
+ self.pg1.remote_ip4,
+ external_port)
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(dms[0].ses_num, 1)
+
+ self.vapi.det44_close_session_in(host0.ip4,
+ port_in,
+ self.pg1.remote_ip4,
+ external_port)
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(dms[0].ses_num, 0)
+
+ def test_tcp_session_close_detection_in(self):
+ """ DET44 TCP session close from inside network """
+ self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+ in_plen=32,
+ out_addr=socket.inet_aton(self.nat_addr),
+ out_plen=32)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+
+ self.initiate_tcp_session(self.pg0, self.pg1)
+
+ # close the session from inside
+ try:
+ # FIN packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="F"))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ pkts = []
+
+ # ACK packet out -> in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="A"))
+ pkts.append(p)
+
+ # FIN packet out -> in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="F"))
+ pkts.append(p)
+
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.get_capture(2)
+
+ # ACK packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A"))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ # Check if deterministic NAT44 closed the session
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(0, dms[0].ses_num)
+ except:
+ self.logger.error("TCP session termination failed")
+ raise
+
+ def test_tcp_session_close_detection_out(self):
+ """ Deterministic NAT TCP session close from outside network """
+ self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+ in_plen=32,
+ out_addr=socket.inet_aton(self.nat_addr),
+ out_plen=32)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+
+ self.initiate_tcp_session(self.pg0, self.pg1)
+
+ # close the session from outside
+ try:
+ # FIN packet out -> in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="F"))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.get_capture(1)
+
+ pkts = []
+
+ # ACK packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A"))
+ pkts.append(p)
+
+ # ACK packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="F"))
+ pkts.append(p)
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(2)
+
+ # ACK packet out -> in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="A"))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.get_capture(1)
+
+ # Check if deterministic NAT44 closed the session
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(0, dms[0].ses_num)
+ except:
+ self.logger.error("TCP session termination failed")
+ raise
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_session_timeout(self):
+ """ Deterministic NAT session timeouts """
+ self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+ in_plen=32,
+ out_addr=socket.inet_aton(self.nat_addr),
+ out_plen=32)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+
+ self.initiate_tcp_session(self.pg0, self.pg1)
+ self.vapi.det44_set_timeouts(udp=5, tcp_established=5,
+ tcp_transitory=5, icmp=5)
+ pkts = self.create_stream_in(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(len(pkts))
+ sleep(15)
+
+ dms = self.vapi.det44_map_dump()
+ self.assertEqual(0, dms[0].ses_num)
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_session_limit_per_user(self):
+ """ Deterministic NAT maximum sessions per user limit """
+ self.vapi.det44_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
+ in_plen=32,
+ out_addr=socket.inet_aton(self.nat_addr),
+ out_plen=32)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ is_add=1, is_inside=1)
+ self.vapi.det44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1, is_inside=0)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4,
+ src_address=self.pg2.local_ip4,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
+ enable=1)
+
+ pkts = []
+ for port in range(1025, 2025):
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=port, dport=port))
+ pkts.append(p)
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(len(pkts))
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=3001, dport=3002))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ # verify ICMP error packet
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ self.assertTrue(p.haslayer(ICMP))
+ icmp = p[ICMP]
+ self.assertEqual(icmp.type, 3)
+ self.assertEqual(icmp.code, 1)
+ self.assertTrue(icmp.haslayer(IPerror))
+ inner_ip = icmp[IPerror]
+ self.assertEqual(inner_ip[UDPerror].sport, 3001)
+ self.assertEqual(inner_ip[UDPerror].dport, 3002)
+
+ dms = self.vapi.det44_map_dump()
+
+ self.assertEqual(1000, dms[0].ses_num)
+
+ # verify IPFIX logging
+ self.vapi.ipfix_flush()
+ sleep(1)
+ capture = self.pg2.get_capture(2)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_entries_per_user(data,
+ 1000,
+ self.pg0.remote_ip4)
+ self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
+ enable=0)
self.verify_capture_in(capture, self.pg0)
-class TestDeterministicNAT(MethodHolder):
- """ Deterministic NAT Test Cases """
-
- @classmethod
- def setUpConstants(cls):
- super(TestDeterministicNAT, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "deterministic", "}"])
-
- @classmethod
- def setUpClass(cls):
- super(TestDeterministicNAT, cls).setUpClass()
- cls.vapi.cli("set log class nat level debug")
-
- cls.tcp_port_in = 6303
- cls.tcp_external_port = 6303
- cls.udp_port_in = 6304
- cls.udp_external_port = 6304
- cls.icmp_id_in = 6305
- cls.nat_addr = '10.0.0.3'
-
- cls.create_pg_interfaces(range(3))
- cls.interfaces = list(cls.pg_interfaces)
-
- for i in cls.interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg0.generate_remote_hosts(2)
- cls.pg0.configure_ipv4_neighbors()
-
- @classmethod
- def tearDownClass(cls):
- super(TestDeterministicNAT, cls).tearDownClass()
-
- def create_stream_in(self, in_if, out_if, ttl=64):
- """
- Create packet stream for inside network
-
- :param in_if: Inside interface
- :param out_if: Outside interface
- :param ttl: TTL of generated packets
- """
- pkts = []
- # TCP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- UDP(sport=self.udp_port_in, dport=self.udp_external_port))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- ICMP(id=self.icmp_id_in, type='echo-request'))
- pkts.append(p)
-
- return pkts
-
- def create_stream_out(self, out_if, dst_ip=None, ttl=64):
- """
- Create packet stream for outside network
-
- :param out_if: Outside interface
- :param dst_ip: Destination IP address (Default use global NAT address)
- :param ttl: TTL of generated packets
- """
- if dst_ip is None:
- dst_ip = self.nat_addr
- pkts = []
- # TCP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- TCP(dport=self.tcp_port_out, sport=self.tcp_external_port))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- UDP(dport=self.udp_port_out, sport=self.udp_external_port))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- ICMP(id=self.icmp_external_id, type='echo-reply'))
- pkts.append(p)
-
- return pkts
-
- def verify_capture_out(self, capture, nat_ip=None):
- """
- Verify captured packets on outside network
-
- :param capture: Captured packets
- :param nat_ip: Translated IP address (Default use global NAT address)
- :param same_port: Source port number is not translated (Default False)
- """
- if nat_ip is None:
- nat_ip = self.nat_addr
- for packet in capture:
- try:
- self.assertEqual(packet[IP].src, nat_ip)
- if packet.haslayer(TCP):
- self.tcp_port_out = packet[TCP].sport
- elif packet.haslayer(UDP):
- self.udp_port_out = packet[UDP].sport
- else:
- self.icmp_external_id = packet[ICMP].id
- except:
- self.logger.error(ppp("Unexpected or invalid packet "
- "(outside network):", packet))
- raise
-
- def test_deterministic_mode(self):
- """ NAT plugin run deterministic mode """
- in_addr = '172.16.255.0'
- out_addr = '172.17.255.50'
- in_addr_t = '172.16.255.20'
- in_plen = 24
- out_plen = 32
-
- nat_config = self.vapi.nat_show_config()
- self.assertEqual(1, nat_config.deterministic)
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=in_addr,
- in_plen=in_plen, out_addr=out_addr,
- out_plen=out_plen)
-
- rep1 = self.vapi.nat_det_forward(in_addr_t)
- self.assertEqual(str(rep1.out_addr), out_addr)
- rep2 = self.vapi.nat_det_reverse(rep1.out_port_hi, out_addr)
-
- self.assertEqual(str(rep2.in_addr), in_addr_t)
-
- deterministic_mappings = self.vapi.nat_det_map_dump()
- self.assertEqual(len(deterministic_mappings), 1)
- dsm = deterministic_mappings[0]
- self.assertEqual(in_addr, str(dsm.in_addr))
- self.assertEqual(in_plen, dsm.in_plen)
- self.assertEqual(out_addr, str(dsm.out_addr))
- self.assertEqual(out_plen, dsm.out_plen)
-
- self.clear_nat_det()
- deterministic_mappings = self.vapi.nat_det_map_dump()
- self.assertEqual(len(deterministic_mappings), 0)
-
- def test_set_timeouts(self):
- """ Set deterministic NAT timeouts """
- timeouts_before = self.vapi.nat_get_timeouts()
-
- self.vapi.nat_set_timeouts(
- udp=timeouts_before.udp + 10,
- tcp_established=timeouts_before.tcp_established + 10,
- tcp_transitory=timeouts_before.tcp_transitory + 10,
- icmp=timeouts_before.icmp + 10)
-
- timeouts_after = self.vapi.nat_get_timeouts()
-
- self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
- self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
- self.assertNotEqual(timeouts_before.tcp_established,
- timeouts_after.tcp_established)
- self.assertNotEqual(timeouts_before.tcp_transitory,
- timeouts_after.tcp_transitory)
-
- def test_det_in(self):
- """ Deterministic NAT translation test (TCP, UDP, ICMP) """
-
- nat_ip = "10.0.0.10"
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(nat_ip),
- out_plen=32)
-
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- # in2out
- pkts = self.create_stream_in(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, nat_ip)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- self.verify_capture_in(capture, self.pg0)
-
- # session dump test
- sessions = self.vapi.nat_det_session_dump(self.pg0.remote_ip4)
- self.assertEqual(len(sessions), 3)
-
- # TCP session
- s = sessions[0]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.tcp_port_in)
- self.assertEqual(s.out_port, self.tcp_port_out)
- self.assertEqual(s.ext_port, self.tcp_external_port)
-
- # UDP session
- s = sessions[1]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.udp_port_in)
- self.assertEqual(s.out_port, self.udp_port_out)
- self.assertEqual(s.ext_port, self.udp_external_port)
-
- # ICMP session
- s = sessions[2]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.icmp_id_in)
- self.assertEqual(s.out_port, self.icmp_external_id)
-
- def test_multiple_users(self):
- """ Deterministic NAT multiple users """
-
- nat_ip = "10.0.0.10"
- port_in = 80
- external_port = 6303
-
- host0 = self.pg0.remote_hosts[0]
- host1 = self.pg0.remote_hosts[1]
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=host0.ip4, in_plen=24,
- out_addr=socket.inet_aton(nat_ip),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- # host0 to out
- p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
- IP(src=host0.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, dport=external_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, nat_ip)
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, external_port)
- port_out0 = tcp.sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # host1 to out
- p = (Ether(src=host1.mac, dst=self.pg0.local_mac) /
- IP(src=host1.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, dport=external_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, nat_ip)
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, external_port)
- port_out1 = tcp.sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(1, len(dms))
- self.assertEqual(2, dms[0].ses_num)
-
- # out to host0
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=external_port, dport=port_out0))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, self.pg1.remote_ip4)
- self.assertEqual(ip.dst, host0.ip4)
- self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, external_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # out to host1
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=external_port, dport=port_out1))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, self.pg1.remote_ip4)
- self.assertEqual(ip.dst, host1.ip4)
- self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, external_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet", p))
- raise
-
- # session close api test
- self.vapi.nat_det_close_session_out(socket.inet_aton(nat_ip),
- port_out1,
- self.pg1.remote_ip4,
- external_port)
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(dms[0].ses_num, 1)
-
- self.vapi.nat_det_close_session_in(host0.ip4,
- port_in,
- self.pg1.remote_ip4,
- external_port)
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(dms[0].ses_num, 0)
-
- def test_tcp_session_close_detection_in(self):
- """ Deterministic NAT TCP session close from inside network """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
-
- # close the session from inside
- try:
- # FIN packet in -> out
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
- flags="F"))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(1)
-
- pkts = []
-
- # ACK packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="A"))
- pkts.append(p)
-
- # FIN packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="F"))
- pkts.append(p)
-
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(2)
-
- # ACK packet in -> out
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
- flags="A"))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(1)
-
- # Check if deterministic NAT44 closed the session
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
- except:
- self.logger.error("TCP session termination failed")
- raise
-
- def test_tcp_session_close_detection_out(self):
- """ Deterministic NAT TCP session close from outside network """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
-
- # close the session from outside
- try:
- # FIN packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="F"))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(1)
-
- pkts = []
-
- # ACK packet in -> out
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
- flags="A"))
- pkts.append(p)
-
- # ACK packet in -> out
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
- flags="F"))
- pkts.append(p)
-
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(2)
-
- # ACK packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="A"))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(1)
-
- # Check if deterministic NAT44 closed the session
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
- except:
- self.logger.error("TCP session termination failed")
- raise
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_timeout(self):
- """ Deterministic NAT session timeouts """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
- self.vapi.nat_set_timeouts(udp=5, tcp_established=5, tcp_transitory=5,
- icmp=5)
- pkts = self.create_stream_in(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- sleep(15)
-
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_limit_per_user(self):
- """ Deterministic NAT maximum sessions per user limit """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
- self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4,
- src_address=self.pg2.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
- enable=1)
-
- pkts = []
- for port in range(1025, 2025):
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- UDP(sport=port, dport=port))
- pkts.append(p)
-
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- UDP(sport=3001, dport=3002))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.assert_nothing_captured()
-
- # verify ICMP error packet
- capture = self.pg0.get_capture(1)
- p = capture[0]
- self.assertTrue(p.haslayer(ICMP))
- icmp = p[ICMP]
- self.assertEqual(icmp.type, 3)
- self.assertEqual(icmp.code, 1)
- self.assertTrue(icmp.haslayer(IPerror))
- inner_ip = icmp[IPerror]
- self.assertEqual(inner_ip[UDPerror].sport, 3001)
- self.assertEqual(inner_ip[UDPerror].dport, 3002)
-
- dms = self.vapi.nat_det_map_dump()
-
- self.assertEqual(1000, dms[0].ses_num)
-
- # verify IPFIX logging
- self.vapi.ipfix_flush()
- sleep(1)
- capture = self.pg2.get_capture(2)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_entries_per_user(data,
- 1000,
- self.pg0.remote_ip4)
-
- def clear_nat_det(self):
- """
- Clear deterministic NAT configuration.
- """
- self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
- enable=0)
- self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
- deterministic_mappings = self.vapi.nat_det_map_dump()
- for dsm in deterministic_mappings:
- self.vapi.nat_det_add_del_map(is_add=0, in_addr=dsm.in_addr,
- in_plen=dsm.in_plen,
- out_addr=dsm.out_addr,
- out_plen=dsm.out_plen)
-
- interfaces = self.vapi.nat44_interface_dump()
- for intf in interfaces:
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=intf.sw_if_index,
- flags=intf.flags)
-
- def tearDown(self):
- super(TestDeterministicNAT, self).tearDown()
- if not self.vpp_dead:
- self.clear_nat_det()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat44 interfaces"))
- self.logger.info(self.vapi.cli("show nat timeouts"))
- self.logger.info(
- self.vapi.cli("show nat44 deterministic mappings"))
- self.logger.info(
- self.vapi.cli("show nat44 deterministic sessions"))
-
-
class TestNAT64(MethodHolder):
""" NAT64 Test Cases """
Code Review / vpp.git / commitdiff