Basic NAT64 feature (no hairpinning, no multi-thread).
Change-Id: I392fccbce93e70c117f4a9a7ec7cf08d6c537f2d
Signed-off-by: Matus Fabian <matfabia@cisco.com>
snat/out2in.c \
snat/snat_plugin.api.h \
snat/snat_ipfix_logging.c \
- snat/snat_det.c
+ snat/snat_det.c \
+ snat/nat64.c \
+ snat/nat64_cli.c \
+ snat/nat64_in2out.c \
+ snat/nat64_out2in.c \
+ snat/nat64_db.c
API_FILES += snat/snat.api
--- /dev/null
+/*
+ * 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 NAT64 implementation
+ */
+
+#include <snat/nat64.h>
+#include <snat/nat64_db.h>
+#include <vnet/fib/ip4_fib.h>
+
+
+nat64_main_t nat64_main;
+
+/* *INDENT-OFF* */
+
+/* Hook up input features */
+VNET_FEATURE_INIT (nat64_in2out, static) = {
+ .arc_name = "ip6-unicast",
+ .node_name = "nat64-in2out",
+ .runs_before = VNET_FEATURES ("ip6-lookup"),
+};
+VNET_FEATURE_INIT (nat64_out2in, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "nat64-out2in",
+ .runs_before = VNET_FEATURES ("ip4-lookup"),
+};
+
+/* *INDENT-ON* */
+
+clib_error_t *
+nat64_init (vlib_main_t * vm)
+{
+ nat64_main_t *nm = &nat64_main;
+ clib_error_t *error = 0;
+
+ if (nat64_db_init (&nm->db))
+ error = clib_error_return (0, "NAT64 DB init failed");
+
+ /* set session timeouts to default values */
+ nm->udp_timeout = SNAT_UDP_TIMEOUT;
+ nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
+ nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
+ nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+ nm->tcp_incoming_syn_timeout = SNAT_TCP_INCOMING_SYN;
+
+ return error;
+}
+
+int
+nat64_add_del_pool_addr (ip4_address_t * addr, u32 vrf_id, u8 is_add)
+{
+ nat64_main_t *nm = &nat64_main;
+ snat_address_t *a = 0;
+ snat_interface_t *interface;
+ int i;
+
+ /* Check if address already exists */
+ for (i = 0; i < vec_len (nm->addr_pool); i++)
+ {
+ if (nm->addr_pool[i].addr.as_u32 == addr->as_u32)
+ {
+ a = nm->addr_pool + i;
+ break;
+ }
+ }
+
+ if (is_add)
+ {
+ if (a)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ vec_add2 (nm->addr_pool, a, 1);
+ a->addr = *addr;
+ a->fib_index = ip4_fib_index_from_table_id (vrf_id);
+#define _(N, i, n, s) \
+ clib_bitmap_alloc (a->busy_##n##_port_bitmap, 65535);
+ foreach_snat_protocol
+#undef _
+ }
+ else
+ {
+ if (!a)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+#define _(N, id, n, s) \
+ clib_bitmap_free (a->busy_##n##_port_bitmap);
+ foreach_snat_protocol
+#undef _
+ vec_del1 (nm->addr_pool, i);
+ }
+
+ /* Add/del external address to FIB */
+ /* *INDENT-OFF* */
+ pool_foreach (interface, nm->interfaces,
+ ({
+ if (interface->is_inside)
+ continue;
+
+ snat_add_del_addr_to_fib (addr, 32, interface->sw_if_index, is_add);
+ break;
+ }));
+ /* *INDENT-ON* */
+
+ return 0;
+}
+
+void
+nat64_pool_addr_walk (nat64_pool_addr_walk_fn_t fn, void *ctx)
+{
+ nat64_main_t *nm = &nat64_main;
+ snat_address_t *a = 0;
+
+ /* *INDENT-OFF* */
+ vec_foreach (a, nm->addr_pool)
+ {
+ if (fn (a, ctx))
+ break;
+ };
+ /* *INDENT-ON* */
+}
+
+int
+nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add)
+{
+ nat64_main_t *nm = &nat64_main;
+ snat_interface_t *interface = 0, *i;
+ snat_address_t *ap;
+ const char *feature_name, *arc_name;
+
+ /* Check if address already exists */
+ /* *INDENT-OFF* */
+ pool_foreach (i, nm->interfaces,
+ ({
+ if (i->sw_if_index == sw_if_index)
+ {
+ interface = i;
+ break;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (is_add)
+ {
+ if (interface)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ pool_get (nm->interfaces, interface);
+ interface->sw_if_index = sw_if_index;
+ interface->is_inside = is_inside;
+
+ }
+ else
+ {
+ if (!interface)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ pool_put (nm->interfaces, interface);
+ }
+
+ if (!is_inside)
+ {
+ /* *INDENT-OFF* */
+ vec_foreach (ap, nm->addr_pool)
+ snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, is_add);
+ /* *INDENT-ON* */
+ }
+
+ arc_name = is_inside ? "ip6-unicast" : "ip4-unicast";
+ feature_name = is_inside ? "nat64-in2out" : "nat64-out2in";
+
+ return vnet_feature_enable_disable (arc_name, feature_name, sw_if_index,
+ is_add, 0, 0);
+}
+
+void
+nat64_interfaces_walk (nat64_interface_walk_fn_t fn, void *ctx)
+{
+ nat64_main_t *nm = &nat64_main;
+ snat_interface_t *i = 0;
+
+ /* *INDENT-OFF* */
+ pool_foreach (i, nm->interfaces,
+ ({
+ if (fn (i, ctx))
+ break;
+ }));
+ /* *INDENT-ON* */
+}
+
+int
+nat64_alloc_out_addr_and_port (u32 fib_index, snat_protocol_t proto,
+ ip4_address_t * addr, u16 * port)
+{
+ nat64_main_t *nm = &nat64_main;
+ snat_main_t *sm = &snat_main;
+ int i;
+ snat_address_t *a;
+ u32 portnum;
+
+ for (i = 0; i < vec_len (nm->addr_pool); i++)
+ {
+ a = nm->addr_pool + i;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ if (a->busy_##n##_ports < (65535-1024)) \
+ { \
+ while (1) \
+ { \
+ portnum = random_u32 (&sm->random_seed); \
+ portnum &= 0xFFFF; \
+ if (portnum < 1024) \
+ continue; \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \
+ portnum)) \
+ continue; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \
+ portnum, 1); \
+ a->busy_##n##_ports++; \
+ *port = portnum; \
+ addr->as_u32 = a->addr.as_u32; \
+ return 0; \
+ } \
+ } \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning ("unknown protocol");
+ return 1;
+ }
+
+ }
+ /* Totally out of translations to use... */
+ //TODO: IPFix
+ return 1;
+}
+
+void
+nat64_free_out_addr_and_port (ip4_address_t * addr, u16 port,
+ snat_protocol_t proto)
+{
+ nat64_main_t *nm = &nat64_main;
+ int i;
+ snat_address_t *a;
+
+ for (i = 0; i < vec_len (nm->addr_pool); i++)
+ {
+ a = nm->addr_pool + i;
+ if (addr->as_u32 != a->addr.as_u32)
+ continue;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ ASSERT (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \
+ port) == 1); \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, port, 0); \
+ a->busy_##n##_ports--; \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning ("unknown protocol");
+ return;
+ }
+ break;
+ }
+}
+
+int
+nat64_add_del_static_bib_entry (ip6_address_t * in_addr,
+ ip4_address_t * out_addr, u16 in_port,
+ u16 out_port, u8 proto, u32 vrf_id, u8 is_add)
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_db_bib_entry_t *bibe;
+ u32 fib_index =
+ fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id);
+ snat_protocol_t p = ip_proto_to_snat_proto (proto);
+ ip46_address_t addr;
+ int i;
+ snat_address_t *a;
+
+ addr.as_u64[0] = in_addr->as_u64[0];
+ addr.as_u64[1] = in_addr->as_u64[1];
+ bibe =
+ nat64_db_bib_entry_find (&nm->db, &addr, clib_host_to_net_u16 (in_port),
+ p, fib_index, 1);
+
+ if (is_add)
+ {
+ if (bibe)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ for (i = 0; i < vec_len (nm->addr_pool); i++)
+ {
+ a = nm->addr_pool + i;
+ if (out_addr->as_u32 != a->addr.as_u32)
+ continue;
+ switch (p)
+ {
+#define _(N, j, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \
+ out_port)) \
+ return VNET_API_ERROR_INVALID_VALUE; \
+ clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \
+ out_port, 1); \
+ if (out_port > 1024) \
+ a->busy_##n##_ports++; \
+ break;
+ foreach_snat_protocol
+#undef _
+ default:
+ clib_warning ("unknown protocol");
+ return VNET_API_ERROR_INVALID_VALUE_2;
+ }
+ break;
+ }
+ bibe =
+ nat64_db_bib_entry_create (&nm->db, in_addr, out_addr,
+ clib_host_to_net_u16 (in_port),
+ clib_host_to_net_u16 (out_port), fib_index,
+ p, 1);
+ if (!bibe)
+ return VNET_API_ERROR_UNSPECIFIED;
+ }
+ else
+ {
+ if (!bibe)
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ nat64_free_out_addr_and_port (out_addr, out_port, p);
+ nat64_db_bib_entry_free (&nm->db, bibe);
+ }
+
+ return 0;
+}
+
+int
+nat64_set_udp_timeout (u32 timeout)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ if (timeout == 0)
+ nm->udp_timeout = SNAT_UDP_TIMEOUT;
+ else if (timeout < SNAT_UDP_TIMEOUT_MIN)
+ return VNET_API_ERROR_INVALID_VALUE;
+ else
+ nm->udp_timeout = timeout;
+
+ return 0;
+}
+
+u32
+nat64_get_udp_timeout (void)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ return nm->udp_timeout;
+}
+
+int
+nat64_set_icmp_timeout (u32 timeout)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ if (timeout == 0)
+ nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
+ else
+ nm->icmp_timeout = timeout;
+
+ return 0;
+}
+
+u32
+nat64_get_icmp_timeout (void)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ return nm->icmp_timeout;
+}
+
+int
+nat64_set_tcp_timeouts (u32 trans, u32 est, u32 incoming_syn)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ if (trans == 0)
+ nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
+ else
+ nm->tcp_trans_timeout = trans;
+
+ if (est == 0)
+ nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+ else
+ nm->tcp_est_timeout = est;
+
+ if (incoming_syn == 0)
+ nm->tcp_incoming_syn_timeout = SNAT_TCP_INCOMING_SYN;
+ else
+ nm->tcp_incoming_syn_timeout = incoming_syn;
+
+ return 0;
+}
+
+u32
+nat64_get_tcp_trans_timeout (void)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ return nm->tcp_trans_timeout;
+}
+
+u32
+nat64_get_tcp_est_timeout (void)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ return nm->tcp_est_timeout;
+}
+
+u32
+nat64_get_tcp_incoming_syn_timeout (void)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ return nm->tcp_incoming_syn_timeout;
+}
+
+void
+nat64_session_reset_timeout (nat64_db_st_entry_t * ste, vlib_main_t * vm)
+{
+ nat64_main_t *nm = &nat64_main;
+ u32 now = (u32) vlib_time_now (vm);
+
+ switch (ste->proto)
+ {
+ case SNAT_PROTOCOL_ICMP:
+ ste->expire = now + nm->icmp_timeout;
+ return;
+ case SNAT_PROTOCOL_TCP:
+ {
+ switch (ste->tcp_state)
+ {
+ case NAT64_TCP_STATE_V4_INIT:
+ case NAT64_TCP_STATE_V6_INIT:
+ case NAT64_TCP_STATE_V4_FIN_RCV:
+ case NAT64_TCP_STATE_V6_FIN_RCV:
+ case NAT64_TCP_STATE_V6_FIN_V4_FIN_RCV:
+ case NAT64_TCP_STATE_TRANS:
+ ste->expire = now + nm->tcp_trans_timeout;
+ return;
+ case NAT64_TCP_STATE_ESTABLISHED:
+ ste->expire = now + nm->tcp_est_timeout;
+ return;
+ default:
+ return;
+ }
+ }
+ case SNAT_PROTOCOL_UDP:
+ ste->expire = now + nm->udp_timeout;
+ return;
+ default:
+ return;
+ }
+}
+
+void
+nat64_tcp_session_set_state (nat64_db_st_entry_t * ste, tcp_header_t * tcp,
+ u8 is_ip6)
+{
+ switch (ste->tcp_state)
+ {
+ case NAT64_TCP_STATE_CLOSED:
+ {
+ if (tcp->flags & TCP_FLAG_SYN)
+ {
+ if (is_ip6)
+ ste->tcp_state = NAT64_TCP_STATE_V6_INIT;
+ else
+ ste->tcp_state = NAT64_TCP_STATE_V4_INIT;
+ }
+ return;
+ }
+ case NAT64_TCP_STATE_V4_INIT:
+ {
+ if (is_ip6 && (tcp->flags & TCP_FLAG_SYN))
+ ste->tcp_state = NAT64_TCP_STATE_ESTABLISHED;
+ return;
+ }
+ case NAT64_TCP_STATE_V6_INIT:
+ {
+ if (!is_ip6 && (tcp->flags & TCP_FLAG_SYN))
+ ste->tcp_state = NAT64_TCP_STATE_ESTABLISHED;
+ return;
+ }
+ case NAT64_TCP_STATE_ESTABLISHED:
+ {
+ if (tcp->flags & TCP_FLAG_FIN)
+ {
+ if (is_ip6)
+ ste->tcp_state = NAT64_TCP_STATE_V6_FIN_RCV;
+ else
+ ste->tcp_state = NAT64_TCP_STATE_V4_FIN_RCV;
+ }
+ else if (tcp->flags & TCP_FLAG_RST)
+ {
+ ste->tcp_state = NAT64_TCP_STATE_TRANS;
+ }
+ return;
+ }
+ case NAT64_TCP_STATE_V4_FIN_RCV:
+ {
+ if (is_ip6 && (tcp->flags & TCP_FLAG_FIN))
+ ste->tcp_state = NAT64_TCP_STATE_V6_FIN_V4_FIN_RCV;
+ return;
+ }
+ case NAT64_TCP_STATE_V6_FIN_RCV:
+ {
+ if (!is_ip6 && (tcp->flags & TCP_FLAG_FIN))
+ ste->tcp_state = NAT64_TCP_STATE_V6_FIN_V4_FIN_RCV;
+ return;
+ }
+ case NAT64_TCP_STATE_TRANS:
+ {
+ if (!(tcp->flags & TCP_FLAG_RST))
+ ste->tcp_state = NAT64_TCP_STATE_ESTABLISHED;
+ return;
+ }
+ default:
+ return;
+ }
+}
+
+/**
+ * @brief The 'nat64-expire-walk' process's main loop.
+ *
+ * Check expire time for NAT64 sessions.
+ */
+static uword
+nat64_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ while (1)
+ {
+ vlib_process_wait_for_event_or_clock (vm, 10.0);
+ vlib_process_get_events (vm, NULL);
+ u32 now = (u32) vlib_time_now (vm);
+
+ nad64_db_st_free_expired (&nm->db, now);
+ }
+
+ return 0;
+}
+
+static vlib_node_registration_t nat64_expire_walk_node;
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (nat64_expire_walk_node, static) = {
+ .function = nat64_expire_walk_fn,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "nat64-expire-walk",
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 global declarations
+ */
+#ifndef __included_nat64_h__
+#define __included_nat64_h__
+
+#include <snat/snat.h>
+#include <snat/nat64_db.h>
+
+#define foreach_nat64_tcp_ses_state \
+ _(0, CLOSED, "closed") \
+ _(1, V4_INIT, "v4-init") \
+ _(2, V6_INIT, "v6-init") \
+ _(3, ESTABLISHED, "established") \
+ _(4, V4_FIN_RCV, "v4-fin-rcv") \
+ _(5, V6_FIN_RCV, "v6-fin-rcv") \
+ _(6, V6_FIN_V4_FIN_RCV, "v6-fin-v4-fin-rcv") \
+ _(7, TRANS, "trans")
+
+typedef enum
+{
+#define _(v, N, s) NAT64_TCP_STATE_##N = v,
+ foreach_nat64_tcp_ses_state
+#undef _
+} nat64_tcp_ses_state_t;
+
+typedef struct
+{
+ /** Interface pool */
+ snat_interface_t *interfaces;
+
+ /** Address pool vector */
+ snat_address_t *addr_pool;
+
+ /** BIB and session DB **/
+ nat64_db_t db;
+
+ /* values of various timeouts */
+ u32 udp_timeout;
+ u32 icmp_timeout;
+ u32 tcp_trans_timeout;
+ u32 tcp_est_timeout;
+ u32 tcp_incoming_syn_timeout;
+
+ snat_main_t *sm;
+} nat64_main_t;
+
+extern nat64_main_t nat64_main;
+extern vlib_node_registration_t nat64_in2out_node;
+extern vlib_node_registration_t nat64_out2in_node;
+
+/**
+ * @brief Add/delete address to NAT64 pool.
+ *
+ * @param addr IPv4 address.
+ * @param vrf_id VRF id of tenant, ~0 means independent of VRF.
+ * @param is_add 1 if add, 0 if delete.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_add_del_pool_addr (ip4_address_t * addr, u32 vrf_id, u8 is_add);
+
+/**
+ * @brief Call back function when walking addresses in NAT64 pool, non-zero
+ * return value stop walk.
+ */
+typedef int (*nat64_pool_addr_walk_fn_t) (snat_address_t * addr, void *ctx);
+
+/**
+ * @brief Walk NAT64 pool.
+ *
+ * @param fn The function to invoke on each entry visited.
+ * @param ctx A context passed in the visit function.
+ */
+void nat64_pool_addr_walk (nat64_pool_addr_walk_fn_t fn, void *ctx);
+
+/**
+ * @brief Enable/disable NAT64 feature on the interface.
+ *
+ * @param sw_if_index Index of the interface.
+ * @param is_inside 1 if inside, 0 if outside.
+ * @param is_add 1 if add, 0 if delete.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add);
+
+/**
+ * @brief Call back function when walking interfaces with NAT64 feature,
+ * non-zero return value stop walk.
+ */
+typedef int (*nat64_interface_walk_fn_t) (snat_interface_t * i, void *ctx);
+
+/**
+ * @brief Walk NAT64 interfaces.
+ *
+ * @param fn The function to invoke on each entry visited.
+ * @param ctx A context passed in the visit function.
+ */
+void nat64_interfaces_walk (nat64_interface_walk_fn_t fn, void *ctx);
+
+/**
+ * @brief Initialize NAT64.
+ *
+ * @param vm vlib main.
+ *
+ * @return error code.
+ */
+clib_error_t *nat64_init (vlib_main_t * vm);
+
+/**
+ * @brief Add/delete static NAT64 BIB entry.
+ *
+ * @param in_addr Inside IPv6 address.
+ * @param out_addr Outside IPv4 address.
+ * @param in_port Inside port number.
+ * @param out_port Outside port number.
+ * @param proto L4 protocol.
+ * @param vrf_id VRF id of tenant.
+ * @param is_add 1 if add, 0 if delete.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_add_del_static_bib_entry (ip6_address_t * in_addr,
+ ip4_address_t * out_addr, u16 in_port,
+ u16 out_port, u8 proto, u32 vrf_id,
+ u8 is_add);
+
+/**
+ * @brief Alloce IPv4 address and port pair from NAT64 pool.
+ *
+ * @param fib_index FIB index of tenant.
+ * @param proto L4 protocol.
+ * @param addr Allocated IPv4 address.
+ * @param port Allocated port number.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_alloc_out_addr_and_port (u32 fib_index, snat_protocol_t proto,
+ ip4_address_t * addr, u16 * port);
+
+/**
+ * @brief Free IPv4 address and port pair from NAT64 pool.
+ *
+ * @param addr IPv4 address to free.
+ * @param port Port number to free.
+ * @param proto L4 protocol.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+void nat64_free_out_addr_and_port (ip4_address_t * addr, u16 port,
+ snat_protocol_t proto);
+
+/**
+ * @brief Set UDP session timeout.
+ *
+ * @param timeout Timeout value in seconds (if 0 reset to default value 300sec).
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_set_udp_timeout (u32 timeout);
+
+/**
+ * @brief Get UDP session timeout.
+ *
+ * @returns UDP session timeout in seconds.
+ */
+u32 nat64_get_udp_timeout (void);
+
+/**
+ * @brief Set ICMP session timeout.
+ *
+ * @param timeout Timeout value in seconds (if 0 reset to default value 60sec).
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_set_icmp_timeout (u32 timeout);
+
+/**
+ * @brief Get ICMP session timeout.
+ *
+ * @returns ICMP session timeout in seconds.
+ */
+u32 nat64_get_icmp_timeout (void);
+
+/**
+ * @brief Set TCP session timeouts.
+ *
+ * @param trans Transitory timeout in seconds (if 0 reset to default value 240sec).
+ * @param est Established timeout in seconds (if 0 reset to default value 7440sec).
+ * @param incoming_syn Incoming SYN timeout in seconds (if 0 reset to default value 6sec).
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_set_tcp_timeouts (u32 trans, u32 est, u32 incoming_syn);
+
+/**
+ * @brief Get TCP transitory timeout.
+ *
+ * @returns TCP transitory timeout in seconds.
+ */
+u32 nat64_get_tcp_trans_timeout (void);
+
+/**
+ * @brief Get TCP established timeout.
+ *
+ * @returns TCP established timeout in seconds.
+ */
+u32 nat64_get_tcp_est_timeout (void);
+
+/**
+ * @brief Get TCP incoming SYN timeout.
+ *
+ * @returns TCP incoming SYN timeout in seconds.
+ */
+u32 nat64_get_tcp_incoming_syn_timeout (void);
+
+/**
+ * @brief Reset NAT64 session timeout.
+ *
+ * @param ste Session table entry.
+ * @param vm VLIB main.
+ **/
+void nat64_session_reset_timeout (nat64_db_st_entry_t * ste,
+ vlib_main_t * vm);
+
+/**
+ * @brief Set NAT64 TCP session state.
+ *
+ * @param ste Session table entry.
+ * @param tcp TCP header.
+ * @param is_ip6 1 if IPv6 packet, 0 if IPv4.
+ */
+void nat64_tcp_session_set_state (nat64_db_st_entry_t * ste,
+ tcp_header_t * tcp, u8 is_ip6);
+
+#define u8_ptr_add(ptr, index) (((u8 *)ptr) + index)
+#define u16_net_add(u, val) clib_host_to_net_u16(clib_net_to_host_u16(u) + (val))
+
+#endif /* __included_nat64_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 CLI
+ */
+
+#include <snat/nat64.h>
+#include <snat/snat.h>
+#include <vnet/fib/fib_table.h>
+
+static clib_error_t *
+nat64_add_del_pool_addr_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 start_addr, end_addr, this_addr;
+ u32 start_host_order, end_host_order;
+ int i, count, rv;
+ u32 vrf_id = ~0;
+ u8 is_add = 1;
+ clib_error_t *error = 0;
+
+ /* 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 - %U",
+ unformat_ip4_address, &start_addr,
+ unformat_ip4_address, &end_addr))
+ ;
+ else if (unformat (line_input, "tenant-vrf %u", &vrf_id))
+ ;
+ else if (unformat (line_input, "%U", unformat_ip4_address, &start_addr))
+ end_addr = start_addr;
+ 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;
+ }
+ }
+
+ start_host_order = clib_host_to_net_u32 (start_addr.as_u32);
+ end_host_order = clib_host_to_net_u32 (end_addr.as_u32);
+
+ if (end_host_order < start_host_order)
+ {
+ error = clib_error_return (0, "end address less than start address");
+ goto done;
+ }
+
+ count = (end_host_order - start_host_order) + 1;
+ this_addr = start_addr;
+
+ for (i = 0; i < count; i++)
+ {
+ rv = nat64_add_del_pool_addr (&this_addr, vrf_id, is_add);
+
+ switch (rv)
+ {
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error =
+ clib_error_return (0, "NAT64 pool address %U not exist.",
+ format_ip4_address, &this_addr);
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error =
+ clib_error_return (0, "NAT64 pool address %U exist.",
+ format_ip4_address, &this_addr);
+ goto done;
+ default:
+ break;
+
+ }
+ increment_v4_address (&this_addr);
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static int
+nat64_cli_pool_walk (snat_address_t * ap, void *ctx)
+{
+ vlib_main_t *vm = ctx;
+
+ if (ap->fib_index != ~0)
+ {
+ fib_table_t *fib;
+ fib = fib_table_get (ap->fib_index, FIB_PROTOCOL_IP4);
+ if (!fib)
+ return -1;
+ vlib_cli_output (vm, " %U tenant VRF: %u", format_ip4_address,
+ &ap->addr, fib->ft_table_id);
+ }
+ else
+ vlib_cli_output (vm, " %U", format_ip4_address, &ap->addr);
+
+ return 0;
+}
+
+static clib_error_t *
+nat64_show_pool_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vlib_cli_output (vm, "NAT64 pool:");
+ nat64_pool_addr_walk (nat64_cli_pool_walk, vm);
+
+ return 0;
+}
+
+static clib_error_t *
+nat64_interface_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;
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
+ u32 sw_if_index;
+ u32 *inside_sw_if_indices = 0;
+ u32 *outside_sw_if_indices = 0;
+ u8 is_add = 1;
+ int i, rv;
+
+ /* 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", unformat_vnet_sw_interface,
+ vnm, &sw_if_index))
+ vec_add1 (inside_sw_if_indices, sw_if_index);
+ else if (unformat (line_input, "out %U", unformat_vnet_sw_interface,
+ vnm, &sw_if_index))
+ vec_add1 (outside_sw_if_indices, sw_if_index);
+ 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 (vec_len (inside_sw_if_indices))
+ {
+ for (i = 0; i < vec_len (inside_sw_if_indices); i++)
+ {
+ sw_if_index = inside_sw_if_indices[i];
+ rv = nat64_add_del_interface (sw_if_index, 1, is_add);
+ switch (rv)
+ {
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error =
+ clib_error_return (0, "%U NAT64 feature not enabled.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error =
+ clib_error_return (0, "%U NAT64 feature already enabled.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ case VNET_API_ERROR_INVALID_VALUE:
+ case VNET_API_ERROR_INVALID_VALUE_2:
+ error =
+ clib_error_return (0,
+ "%U NAT64 feature enable/disable failed.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ default:
+ break;
+
+ }
+ }
+ }
+
+ if (vec_len (outside_sw_if_indices))
+ {
+ for (i = 0; i < vec_len (outside_sw_if_indices); i++)
+ {
+ sw_if_index = outside_sw_if_indices[i];
+ rv = nat64_add_del_interface (sw_if_index, 0, is_add);
+ switch (rv)
+ {
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error =
+ clib_error_return (0, "%U NAT64 feature not enabled.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error =
+ clib_error_return (0, "%U NAT64 feature already enabled.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ case VNET_API_ERROR_INVALID_VALUE:
+ case VNET_API_ERROR_INVALID_VALUE_2:
+ error =
+ clib_error_return (0,
+ "%U NAT64 feature enable/disable failed.",
+ format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, sw_if_index));
+ goto done;
+ default:
+ break;
+
+ }
+ }
+ }
+
+done:
+ unformat_free (line_input);
+ vec_free (inside_sw_if_indices);
+ vec_free (outside_sw_if_indices);
+
+ return error;
+}
+
+static int
+nat64_cli_interface_walk (snat_interface_t * i, void *ctx)
+{
+ vlib_main_t *vm = ctx;
+ vnet_main_t *vnm = vnet_get_main ();
+
+ vlib_cli_output (vm, " %U %s", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, i->sw_if_index),
+ i->is_inside ? "in" : "out");
+ return 0;
+}
+
+static clib_error_t *
+nat64_show_interfaces_command_fn (vlib_main_t * vm,
+ unformat_input_t *
+ input, vlib_cli_command_t * cmd)
+{
+ vlib_cli_output (vm, "NAT64 interfaces:");
+ nat64_interfaces_walk (nat64_cli_interface_walk, vm);
+
+ return 0;
+}
+
+static clib_error_t *
+nat64_add_del_static_bib_command_fn (vlib_main_t *
+ vm,
+ unformat_input_t
+ * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ u8 is_add = 1;
+ ip6_address_t in_addr;
+ ip4_address_t out_addr;
+ u16 in_port;
+ u16 out_port;
+ u32 vrf_id = 0;
+ snat_protocol_t proto = 0;
+ u8 p = 0;
+ int rv;
+
+ 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 %u", unformat_ip6_address,
+ &in_addr, &in_port))
+ ;
+ else if (unformat (line_input, "%U %u", unformat_ip4_address,
+ &out_addr, &out_port))
+ ;
+ else if (unformat (line_input, "vrf %u", &vrf_id))
+ ;
+ else if (unformat (line_input, "%U", unformat_snat_protocol, &proto))
+ ;
+ 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;
+ }
+ }
+
+ p = snat_proto_to_ip_proto (proto);
+
+ rv =
+ nat64_add_del_static_bib_entry (&in_addr, &out_addr, in_port, out_port, p,
+ vrf_id, is_add);
+
+ switch (rv)
+ {
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error = clib_error_return (0, "NAT64 BIB entry not exist.");
+ goto done;
+ case VNET_API_ERROR_VALUE_EXIST:
+ error = clib_error_return (0, "NAT64 BIB entry exist.");
+ goto done;
+ case VNET_API_ERROR_UNSPECIFIED:
+ error = clib_error_return (0, "Crerate NAT64 BIB entry failed.");
+ goto done;
+ case VNET_API_ERROR_INVALID_VALUE:
+ error =
+ clib_error_return (0, "Outside addres %U and port %u already in use.",
+ format_ip4_address, &out_addr, out_port);
+ goto done;
+ default:
+ break;
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static int
+nat64_cli_bib_walk (nat64_db_bib_entry_t * bibe, void *ctx)
+{
+ vlib_main_t *vm = ctx;
+ fib_table_t *fib;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ vlib_cli_output (vm, " %U %u %U %u %U vrf %u %s %u sessions",
+ format_ip6_address, &bibe->in_addr,
+ clib_net_to_host_u16 (bibe->in_port), format_ip4_address,
+ &bibe->out_addr, clib_net_to_host_u16 (bibe->out_port),
+ format_snat_protocol, bibe->proto, fib->ft_table_id,
+ bibe->is_static ? "static" : "dynamic", bibe->ses_num);
+ return 0;
+}
+
+static clib_error_t *
+nat64_show_bib_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ nat64_main_t *nm = &nat64_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ snat_protocol_t proto = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ if (unformat (line_input, "%U", unformat_snat_protocol, &proto))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+
+ vlib_cli_output (vm, "NAT64 %U BIB:", format_snat_protocol, proto);
+ nat64_db_bib_walk (&nm->db, proto, nat64_cli_bib_walk, vm);
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+nat64_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;
+ clib_error_t *error = 0;
+ u32 timeout, tcp_trans, tcp_est, tcp_incoming_syn;
+
+ tcp_trans = nat64_get_tcp_trans_timeout ();
+ tcp_est = nat64_get_tcp_est_timeout ();
+ tcp_incoming_syn = nat64_get_tcp_incoming_syn_timeout ();
+
+ 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", &timeout))
+ {
+ if (nat64_set_udp_timeout (timeout))
+ {
+ error = clib_error_return (0, "Invalid UDP timeout value");
+ goto done;
+ }
+ }
+ else if (unformat (line_input, "icmp %u", &timeout))
+ {
+ if (nat64_set_icmp_timeout (timeout))
+ {
+ error = clib_error_return (0, "Invalid ICMP timeout value");
+ goto done;
+ }
+ }
+ else if (unformat (line_input, "tcp-trans %u", &tcp_trans))
+ {
+ if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
+ {
+ error =
+ clib_error_return (0, "Invalid TCP transitory tiemout value");
+ goto done;
+ }
+ }
+ else if (unformat (line_input, "tcp-est %u", &tcp_est))
+ {
+ if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
+ {
+ error =
+ clib_error_return (0,
+ "Invalid TCP established tiemout value");
+ goto done;
+ }
+ }
+ else
+ if (unformat (line_input, "tcp-incoming-syn %u", &tcp_incoming_syn))
+ {
+ if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
+ {
+ error =
+ clib_error_return (0,
+ "Invalid TCP incoming SYN tiemout value");
+ goto done;
+ }
+ }
+ else if (unformat (line_input, "reset"))
+ {
+ nat64_set_udp_timeout (0);
+ nat64_set_icmp_timeout (0);
+ nat64_set_tcp_timeouts (0, 0, 0);
+ }
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+static clib_error_t *
+nat64_show_timeouts_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vlib_cli_output (vm, "NAT64 session timeouts:");
+ vlib_cli_output (vm, " UDP %usec", nat64_get_udp_timeout ());
+ vlib_cli_output (vm, " ICMP %usec", nat64_get_icmp_timeout ());
+ vlib_cli_output (vm, " TCP transitory %usec",
+ nat64_get_tcp_trans_timeout ());
+ vlib_cli_output (vm, " TCP established %usec",
+ nat64_get_tcp_est_timeout ());
+ vlib_cli_output (vm, " TCP incoming SYN %usec",
+ nat64_get_tcp_incoming_syn_timeout ());
+
+ return 0;
+}
+
+static int
+nat64_cli_st_walk (nat64_db_st_entry_t * ste, void *ctx)
+{
+ vlib_main_t *vm = ctx;
+ nat64_main_t *nm = &nat64_main;
+ nat64_db_bib_entry_t *bibe;
+ fib_table_t *fib;
+
+ bibe = nat64_db_bib_entry_by_index (&nm->db, ste->proto, ste->bibe_index);
+ if (!bibe)
+ return -1;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ u32 vrf_id = fib->ft_table_id;
+
+ if (ste->proto == SNAT_PROTOCOL_ICMP)
+ vlib_cli_output (vm, " %U %U %u %U %U %u %U vrf %u",
+ format_ip6_address, &bibe->in_addr,
+ format_ip6_address, &ste->in_r_addr,
+ clib_net_to_host_u16 (bibe->in_port),
+ format_ip4_address, &bibe->out_addr,
+ format_ip4_address, &ste->out_r_addr,
+ clib_net_to_host_u16 (bibe->out_port),
+ format_snat_protocol, bibe->proto, vrf_id);
+ else
+ vlib_cli_output (vm, " %U %u %U %u %U %u %U %u %U vrf %u",
+ format_ip6_address, &bibe->in_addr,
+ clib_net_to_host_u16 (bibe->in_port),
+ format_ip6_address, &ste->in_r_addr,
+ clib_net_to_host_u16 (ste->r_port),
+ format_ip4_address, &bibe->out_addr,
+ clib_net_to_host_u16 (bibe->out_port),
+ format_ip4_address, &ste->out_r_addr,
+ clib_net_to_host_u16 (ste->r_port),
+ format_snat_protocol, bibe->proto, vrf_id);
+ return 0;
+}
+
+static clib_error_t *
+nat64_show_st_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ nat64_main_t *nm = &nat64_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ snat_protocol_t proto = 0;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ if (unformat (line_input, "%U", unformat_snat_protocol, &proto))
+ ;
+ else
+ {
+ error = clib_error_return (0, "unknown input: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+
+ vlib_cli_output (vm, "NAT64 %U session table:", format_snat_protocol,
+ proto);
+ nat64_db_st_walk (&nm->db, proto, nat64_cli_st_walk, vm);
+
+done:
+ unformat_free (line_input);
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+
+VLIB_CLI_COMMAND (nat64_add_pool_address_command, static) = {
+ .path = "nat64 add pool address",
+ .short_help = "nat64 add pool address <ip4-range-start> [- <ip4-range-end>] "
+ "[tenant-vrf <vrf-id>] [del]",
+ .function = nat64_add_del_pool_addr_command_fn,
+};
+
+VLIB_CLI_COMMAND (show_nat64_pool_command, static) = {
+ .path = "show nat64 pool",
+ .short_help = "show nat64 pool",
+ .function = nat64_show_pool_command_fn,
+};
+
+VLIB_CLI_COMMAND (set_interface_nat64_command, static) = {
+ .path = "set interface nat64",
+ .short_help = "set interface nat64 in|out <intfc> [del]",
+ .function = nat64_interface_feature_command_fn,
+};
+
+VLIB_CLI_COMMAND (show_nat64_interfaces_command, static) = {
+ .path = "show nat64 interfaces",
+ .short_help = "show nat64 interfaces",
+ .function = nat64_show_interfaces_command_fn,
+};
+
+VLIB_CLI_COMMAND (nat64_add_del_static_bib_command, static) = {
+ .path = "nat64 add static bib",
+ .short_help = "nat64 add static bib <ip6-addr> <port> <ip4-addr> <port> "
+ "tcp|udp|icmp [vfr <table-id>] [del]",
+ .function = nat64_add_del_static_bib_command_fn,
+};
+
+VLIB_CLI_COMMAND (show_nat64_bib_command, static) = {
+ .path = "show nat64 bib",
+ .short_help = "show nat64 bib tcp|udp|icmp",
+ .function = nat64_show_bib_command_fn,
+};
+
+VLIB_CLI_COMMAND (set_nat64_timeouts_command, static) = {
+ .path = "set nat64 timeouts",
+ .short_help = "set nat64 timeouts udp <sec> icmp <sec> tcp-trans <sec> "
+ "tcp-est <sec> tcp-incoming-syn <sec> | reset",
+ .function = nat64_set_timeouts_command_fn,
+};
+
+VLIB_CLI_COMMAND (show_nat64_timeouts_command, static) = {
+ .path = "show nat64 tiemouts",
+ .short_help = "show nat64 tiemouts",
+ .function = nat64_show_timeouts_command_fn,
+};
+
+VLIB_CLI_COMMAND (show_nat64_st_command, static) = {
+ .path = "show nat64 session table",
+ .short_help = "show nat64 session table tcp|udp|icmp",
+ .function = nat64_show_st_command_fn,
+};
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 DB
+ */
+#include <snat/nat64_db.h>
+
+int
+nat64_db_init (nat64_db_t * db)
+{
+ u32 bib_buckets = 1024;
+ u32 bib_memory_size = 128 << 20;
+ u32 st_buckets = 2048;
+ u32 st_memory_size = 256 << 20;
+
+ clib_bihash_init_24_8 (&db->bib.in2out, "bib-in2out", bib_buckets,
+ bib_memory_size);
+
+ clib_bihash_init_24_8 (&db->bib.out2in, "bib-out2in", bib_buckets,
+ bib_memory_size);
+
+ clib_bihash_init_48_8 (&db->st.in2out, "st-in2out", st_buckets,
+ st_memory_size);
+
+ clib_bihash_init_48_8 (&db->st.out2in, "st-out2in", st_buckets,
+ st_memory_size);
+
+ return 0;
+}
+
+nat64_db_bib_entry_t *
+nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr,
+ ip4_address_t * out_addr, u16 in_port,
+ u16 out_port, u32 fib_index, snat_protocol_t proto,
+ u8 is_static)
+{
+ nat64_db_bib_entry_t *bibe;
+ nat64_db_bib_entry_key_t bibe_key;
+ clib_bihash_kv_24_8_t kv;
+
+ /* create pool entry */
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ pool_get (db->bib._##n##_bib, bibe); \
+ kv.value = bibe - db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", proto);
+ return 0;
+ }
+ memset (bibe, 0, sizeof (*bibe));
+ bibe->in_addr.as_u64[0] = in_addr->as_u64[0];
+ bibe->in_addr.as_u64[1] = in_addr->as_u64[1];
+ bibe->in_port = in_port;
+ bibe->out_addr.as_u32 = out_addr->as_u32;
+ bibe->out_port = out_port;
+ bibe->fib_index = fib_index;
+ bibe->proto = proto;
+ bibe->is_static = is_static;
+
+ /* create hash lookup */
+ bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0];
+ bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1];
+ bibe_key.fib_index = bibe->fib_index;
+ bibe_key.port = bibe->in_port;
+ bibe_key.proto = bibe->proto;
+ bibe_key.rsvd = 0;
+ kv.key[0] = bibe_key.as_u64[0];
+ kv.key[1] = bibe_key.as_u64[1];
+ kv.key[2] = bibe_key.as_u64[2];
+ clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 1);
+
+ memset (&bibe_key.addr, 0, sizeof (bibe_key.addr));
+ bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32;
+ bibe_key.fib_index = 0;
+ bibe_key.port = bibe->out_port;
+ kv.key[0] = bibe_key.as_u64[0];
+ kv.key[1] = bibe_key.as_u64[1];
+ kv.key[2] = bibe_key.as_u64[2];
+ clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1);
+
+ return bibe;
+}
+
+void
+nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe)
+{
+ nat64_db_bib_entry_key_t bibe_key;
+ clib_bihash_kv_24_8_t kv;
+ nat64_db_bib_entry_t *bib;
+
+ switch (bibe->proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", bibe->proto);
+ return;
+ }
+
+ /* delete hash lookup */
+ bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0];
+ bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1];
+ bibe_key.fib_index = bibe->fib_index;
+ bibe_key.port = bibe->in_port;
+ bibe_key.proto = bibe->proto;
+ bibe_key.rsvd = 0;
+ kv.key[0] = bibe_key.as_u64[0];
+ kv.key[1] = bibe_key.as_u64[1];
+ kv.key[2] = bibe_key.as_u64[2];
+ clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 0);
+
+ memset (&bibe_key.addr, 0, sizeof (bibe_key.addr));
+ bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32;
+ bibe_key.fib_index = 0;
+ bibe_key.port = bibe->out_port;
+ kv.key[0] = bibe_key.as_u64[0];
+ kv.key[1] = bibe_key.as_u64[1];
+ kv.key[2] = bibe_key.as_u64[2];
+ clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 0);
+
+ /* delete from pool */
+ pool_put (bib, bibe);
+}
+
+nat64_db_bib_entry_t *
+nat64_db_bib_entry_find (nat64_db_t * db, ip46_address_t * addr, u16 port,
+ snat_protocol_t proto, u32 fib_index, u8 is_ip6)
+{
+ nat64_db_bib_entry_t *bibe = 0;
+ nat64_db_bib_entry_key_t bibe_key;
+ clib_bihash_kv_24_8_t kv, value;
+ nat64_db_bib_entry_t *bib;
+
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", proto);
+ return 0;
+ }
+
+ bibe_key.addr.as_u64[0] = addr->as_u64[0];
+ bibe_key.addr.as_u64[1] = addr->as_u64[1];
+ bibe_key.fib_index = fib_index;
+ bibe_key.port = port;
+ bibe_key.proto = proto;
+ bibe_key.rsvd = 0;
+
+ kv.key[0] = bibe_key.as_u64[0];
+ kv.key[1] = bibe_key.as_u64[1];
+ kv.key[2] = bibe_key.as_u64[2];
+
+ if (!clib_bihash_search_24_8
+ (is_ip6 ? &db->bib.in2out : &db->bib.out2in, &kv, &value))
+ bibe = pool_elt_at_index (bib, value.value);
+
+ return bibe;
+}
+
+void
+nat64_db_bib_walk (nat64_db_t * db, snat_protocol_t proto,
+ nat64_db_bib_walk_fn_t fn, void *ctx)
+{
+ nat64_db_bib_entry_t *bib, *bibe;
+
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol");
+ return;
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (bibe, bib,
+ ({
+ if (fn (bibe, ctx))
+ return;
+ }));
+ /* *INDENT-ON* */
+}
+
+nat64_db_bib_entry_t *
+nat64_db_bib_entry_by_index (nat64_db_t * db, snat_protocol_t proto,
+ u32 bibe_index)
+{
+ nat64_db_bib_entry_t *bib;
+
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", proto);
+ return 0;
+ }
+
+ return pool_elt_at_index (bib, bibe_index);
+}
+
+void
+nat64_db_st_walk (nat64_db_t * db, snat_protocol_t proto,
+ nat64_db_st_walk_fn_t fn, void *ctx)
+{
+ nat64_db_st_entry_t *st, *ste;
+
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ st = db->st._##n##_st; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol");
+ return;
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (ste, st,
+ ({
+ if (fn (ste, ctx))
+ return;
+ }));
+ /* *INDENT-ON* */
+}
+
+nat64_db_st_entry_t *
+nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe,
+ ip6_address_t * in_r_addr,
+ ip4_address_t * out_r_addr, u16 r_port)
+{
+ nat64_db_st_entry_t *ste;
+ nat64_db_bib_entry_t *bib;
+ nat64_db_st_entry_key_t ste_key;
+ clib_bihash_kv_48_8_t kv;
+
+ /* create pool entry */
+ switch (bibe->proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ pool_get (db->st._##n##_st, ste); \
+ kv.value = ste - db->st._##n##_st; \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", bibe->proto);
+ return 0;
+ }
+ memset (ste, 0, sizeof (*ste));
+ ste->in_r_addr.as_u64[0] = in_r_addr->as_u64[0];
+ ste->in_r_addr.as_u64[1] = in_r_addr->as_u64[1];
+ ste->out_r_addr.as_u32 = out_r_addr->as_u32;
+ ste->r_port = r_port;
+ ste->bibe_index = bibe - bib;
+ ste->proto = bibe->proto;
+
+ /* increment session number for BIB entry */
+ bibe->ses_num++;
+
+ /* create hash lookup */
+ memset (&ste_key, 0, sizeof (ste_key));
+ ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0];
+ ste_key.l_addr.as_u64[1] = bibe->in_addr.as_u64[1];
+ ste_key.r_addr.as_u64[0] = ste->in_r_addr.as_u64[0];
+ ste_key.r_addr.as_u64[1] = ste->in_r_addr.as_u64[1];
+ ste_key.fib_index = bibe->fib_index;
+ ste_key.l_port = bibe->in_port;
+ ste_key.r_port = ste->r_port;
+ ste_key.proto = ste->proto;
+ kv.key[0] = ste_key.as_u64[0];
+ kv.key[1] = ste_key.as_u64[1];
+ kv.key[2] = ste_key.as_u64[2];
+ kv.key[3] = ste_key.as_u64[3];
+ kv.key[4] = ste_key.as_u64[4];
+ kv.key[5] = ste_key.as_u64[5];
+ clib_bihash_add_del_48_8 (&db->st.in2out, &kv, 1);
+
+ memset (&ste_key, 0, sizeof (ste_key));
+ ste_key.l_addr.ip4.as_u32 = bibe->out_addr.as_u32;
+ ste_key.r_addr.ip4.as_u32 = ste->out_r_addr.as_u32;
+ ste_key.l_port = bibe->out_port;
+ ste_key.r_port = ste->r_port;
+ ste_key.proto = ste->proto;
+ kv.key[0] = ste_key.as_u64[0];
+ kv.key[1] = ste_key.as_u64[1];
+ kv.key[2] = ste_key.as_u64[2];
+ kv.key[3] = ste_key.as_u64[3];
+ kv.key[4] = ste_key.as_u64[4];
+ kv.key[5] = ste_key.as_u64[5];
+ clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 1);
+
+ return ste;
+}
+
+void
+nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste)
+{
+ nat64_db_st_entry_t *st;
+ nat64_db_bib_entry_t *bib, *bibe;
+ nat64_db_st_entry_key_t ste_key;
+ clib_bihash_kv_48_8_t kv;
+
+ switch (ste->proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ st = db->st._##n##_st; \
+ bib = db->bib._##n##_bib; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", ste->proto);
+ return;
+ }
+
+ bibe = pool_elt_at_index (bib, ste->bibe_index);
+
+ /* delete hash lookup */
+ memset (&ste_key, 0, sizeof (ste_key));
+ ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0];
+ ste_key.l_addr.as_u64[1] = bibe->in_addr.as_u64[1];
+ ste_key.r_addr.as_u64[0] = ste->in_r_addr.as_u64[0];
+ ste_key.r_addr.as_u64[1] = ste->in_r_addr.as_u64[1];
+ ste_key.fib_index = bibe->fib_index;
+ ste_key.l_port = bibe->in_port;
+ ste_key.r_port = ste->r_port;
+ ste_key.proto = ste->proto;
+ kv.key[0] = ste_key.as_u64[0];
+ kv.key[1] = ste_key.as_u64[1];
+ kv.key[2] = ste_key.as_u64[2];
+ kv.key[3] = ste_key.as_u64[3];
+ kv.key[4] = ste_key.as_u64[4];
+ kv.key[5] = ste_key.as_u64[5];
+ clib_bihash_add_del_48_8 (&db->st.in2out, &kv, 0);
+
+ memset (&ste_key, 0, sizeof (ste_key));
+ ste_key.l_addr.ip4.as_u32 = bibe->out_addr.as_u32;
+ ste_key.r_addr.ip4.as_u32 = ste->out_r_addr.as_u32;
+ ste_key.l_port = bibe->out_port;
+ ste_key.r_port = ste->r_port;
+ ste_key.proto = ste->proto;
+ kv.key[0] = ste_key.as_u64[0];
+ kv.key[1] = ste_key.as_u64[1];
+ kv.key[2] = ste_key.as_u64[2];
+ kv.key[3] = ste_key.as_u64[3];
+ kv.key[4] = ste_key.as_u64[4];
+ kv.key[5] = ste_key.as_u64[5];
+ clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 0);
+
+ /* delete from pool */
+ pool_put (st, ste);
+
+ /* decrement session number for BIB entry */
+ bibe->ses_num--;
+
+ /* delete BIB entry if last session and dynamic */
+ if (!bibe->is_static && !bibe->ses_num)
+ nat64_db_bib_entry_free (db, bibe);
+}
+
+nat64_db_st_entry_t *
+nat64_db_st_entry_find (nat64_db_t * db, ip46_address_t * l_addr,
+ ip46_address_t * r_addr, u16 l_port, u16 r_port,
+ snat_protocol_t proto, u32 fib_index, u8 is_ip6)
+{
+ nat64_db_st_entry_t *ste = 0;
+ nat64_db_st_entry_t *st;
+ nat64_db_st_entry_key_t ste_key;
+ clib_bihash_kv_48_8_t kv, value;
+
+ switch (proto)
+ {
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ case SNAT_PROTOCOL_##N: \
+ st = db->st._##n##_st; \
+ break;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+ default:
+ clib_warning ("unknown protocol %u", proto);
+ return ste;
+ }
+
+ memset (&ste_key, 0, sizeof (ste_key));
+ ste_key.l_addr.as_u64[0] = l_addr->as_u64[0];
+ ste_key.l_addr.as_u64[1] = l_addr->as_u64[1];
+ ste_key.r_addr.as_u64[0] = r_addr->as_u64[0];
+ ste_key.r_addr.as_u64[1] = r_addr->as_u64[1];
+ ste_key.fib_index = fib_index;
+ ste_key.l_port = l_port;
+ ste_key.r_port = r_port;
+ ste_key.proto = proto;
+ kv.key[0] = ste_key.as_u64[0];
+ kv.key[1] = ste_key.as_u64[1];
+ kv.key[2] = ste_key.as_u64[2];
+ kv.key[3] = ste_key.as_u64[3];
+ kv.key[4] = ste_key.as_u64[4];
+ kv.key[5] = ste_key.as_u64[5];
+
+ if (!clib_bihash_search_48_8
+ (is_ip6 ? &db->st.in2out : &db->st.out2in, &kv, &value))
+ ste = pool_elt_at_index (st, value.value);
+
+ return ste;
+}
+
+void
+nad64_db_st_free_expired (nat64_db_t * db, u32 now)
+{
+ u32 *ste_to_be_free = 0, *ste_index;
+ nat64_db_st_entry_t *st, *ste;
+
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ st = db->st._##n##_st; \
+ pool_foreach (ste, st, ({\
+ if (i == SNAT_PROTOCOL_TCP && !ste->tcp_state) \
+ continue; \
+ if (ste->expire < now) \
+ vec_add1 (ste_to_be_free, ste - st); \
+ })); \
+ vec_foreach (ste_index, ste_to_be_free) \
+ pool_put_index (st, ste_index[0]); \
+ vec_free (ste_to_be_free); \
+ ste_to_be_free = 0;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 DB
+ */
+#ifndef __included_nat64_db_h__
+#define __included_nat64_db_h__
+
+#include <vppinfra/bihash_24_8.h>
+#include <vppinfra/bihash_48_8.h>
+#include <snat/snat.h>
+
+
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ ip46_address_t addr;
+ u32 fib_index;
+ u16 port;
+ u8 proto;
+ u8 rsvd;
+ };
+ u64 as_u64[3];
+ };
+} nat64_db_bib_entry_key_t;
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(struct
+{
+ ip6_address_t in_addr;
+ u16 in_port;
+ ip4_address_t out_addr;
+ u16 out_port;
+ u32 fib_index;
+ u32 ses_num;
+ u8 proto;
+ u8 is_static;
+}) nat64_db_bib_entry_t;
+/* *INDENT-ON* */
+
+typedef struct
+{
+ /* BIBs */
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ nat64_db_bib_entry_t *_##n##_bib;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+
+ /* BIB lookup */
+ clib_bihash_24_8_t in2out;
+ clib_bihash_24_8_t out2in;
+} nat64_db_bib_t;
+
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ ip46_address_t l_addr;
+ ip46_address_t r_addr;
+ u32 fib_index;
+ u16 l_port;
+ u16 r_port;
+ u8 proto;
+ u8 rsvd[7];
+ };
+ u64 as_u64[6];
+ };
+} nat64_db_st_entry_key_t;
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(struct
+{
+ ip6_address_t in_r_addr;
+ ip4_address_t out_r_addr;
+ u16 r_port;
+ u32 bibe_index;
+ u32 expire;
+ u8 proto;
+ u8 tcp_state;
+}) nat64_db_st_entry_t;
+/* *INDENT-ON* */
+
+typedef struct
+{
+ /* session tables */
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ nat64_db_st_entry_t *_##n##_st;
+ foreach_snat_protocol
+#undef _
+/* *INDENT-ON* */
+
+ /* session lookup */
+ clib_bihash_48_8_t in2out;
+ clib_bihash_48_8_t out2in;
+} nat64_db_st_t;
+
+typedef struct
+{
+ nat64_db_bib_t bib;
+ nat64_db_st_t st;
+} nat64_db_t;
+
+/**
+ * @brief Initialize NAT64 DB.
+ *
+ * @param db NAT64 DB.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_db_init (nat64_db_t * db);
+
+/**
+ * @brief Create new NAT64 BIB entry.
+ *
+ * @param db NAT64 DB.
+ * @param in_addr Inside IPv6 address.
+ * @param out_addr Outside IPv4 address.
+ * @param in_port Inside port number.
+ * @param out_port Outside port number.
+ * @param fib_index FIB index.
+ * @param proto L4 protocol.
+ * @param is_static 1 if static, 0 if dynamic.
+ *
+ * @returns BIB entry on success, 0 otherwise.
+ */
+nat64_db_bib_entry_t *nat64_db_bib_entry_create (nat64_db_t * db,
+ ip6_address_t * in_addr,
+ ip4_address_t * out_addr,
+ u16 in_port, u16 out_port,
+ u32 fib_index,
+ snat_protocol_t proto,
+ u8 is_static);
+
+/**
+ * @brief Free NAT64 BIB entry.
+ *
+ * @param db NAT64 DB.
+ * @param bibe BIB entry.
+ */
+void nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe);
+
+/**
+ * @brief Call back function when walking NAT64 BIB, non-zero
+ * return value stop walk.
+ */
+typedef int (*nat64_db_bib_walk_fn_t) (nat64_db_bib_entry_t * bibe,
+ void *ctx);
+/**
+ * @brief Walk NAT64 BIB.
+ *
+ * @param db NAT64 DB.
+ * @param proto BIB protocol (TCP/UDP/ICMP).
+ * @param fn The function to invoke on each entry visited.
+ * @param ctx A context passed in the visit function.
+ */
+void nat64_db_bib_walk (nat64_db_t * db, snat_protocol_t proto,
+ nat64_db_bib_walk_fn_t fn, void *ctx);
+
+/**
+ * @brief Find NAT64 BIB entry.
+ *
+ * @param db NAT64 DB.
+ * @param addr IP address.
+ * @param port Port number.
+ * @param proto L4 protocol.
+ * @param fib_index FIB index.
+ * @param is_ip6 1 if find by IPv6 (inside) address, 0 by IPv4 (outside).
+ *
+ * @return BIB entry if found.
+ */
+nat64_db_bib_entry_t *nat64_db_bib_entry_find (nat64_db_t * db,
+ ip46_address_t * addr,
+ u16 port,
+ snat_protocol_t proto,
+ u32 fib_index, u8 is_ip6);
+
+/**
+ * @brief Get BIB entry by index and protocol.
+ *
+ * @param db NAT64 DB.
+ * @param proto L4 protocol.
+ * @param bibe_index BIB entry index.
+ *
+ * @return BIB entry if found.
+ */
+nat64_db_bib_entry_t *nat64_db_bib_entry_by_index (nat64_db_t * db,
+ snat_protocol_t proto,
+ u32 bibe_index);
+/**
+ * @brief Create new NAT64 session table entry.
+ *
+ * @param db NAT64 DB.
+ * @param bibe Corresponding BIB entry.
+ * @param in_r_addr Inside IPv6 address of the remote host.
+ * @param out_r_addr Outside IPv4 address of the remote host.
+ * @param r_port Remote host port number.
+ *
+ * @returns BIB entry on success, 0 otherwise.
+ */
+nat64_db_st_entry_t *nat64_db_st_entry_create (nat64_db_t * db,
+ nat64_db_bib_entry_t * bibe,
+ ip6_address_t * in_r_addr,
+ ip4_address_t * out_r_addr,
+ u16 r_port);
+
+/**
+ * @brief Free NAT64 session table entry.
+ *
+ * @param db NAT64 DB.
+ * @param ste Session table entry.
+ */
+void nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste);
+
+/**
+ * @brief Find NAT64 session table entry.
+ *
+ * @param db NAT64 DB.
+ * @param l_addr Local host address.
+ * @param r_addr Remote host address.
+ * @param l_port Local host port number.
+ * @param r_port Remote host port number.
+ * @param proto L4 protocol.
+ * @param fib_index FIB index.
+ * @param is_ip6 1 if find by IPv6 (inside) address, 0 by IPv4 (outside).
+ *
+ * @return BIB entry if found.
+ */
+nat64_db_st_entry_t *nat64_db_st_entry_find (nat64_db_t * db,
+ ip46_address_t * l_addr,
+ ip46_address_t * r_addr,
+ u16 l_port, u16 r_port,
+ snat_protocol_t proto,
+ u32 fib_index, u8 is_ip6);
+
+/**
+ * @brief Call back function when walking NAT64 session table, non-zero
+ * return value stop walk.
+ */
+typedef int (*nat64_db_st_walk_fn_t) (nat64_db_st_entry_t * ste, void *ctx);
+
+/**
+ * @brief Walk NAT64 session table.
+ *
+ * @param db NAT64 DB.
+ * @param proto Session table protocol (TCP/UDP/ICMP).
+ * @param fn The function to invoke on each entry visited.
+ * @param ctx A context passed in the visit function.
+ */
+void nat64_db_st_walk (nat64_db_t * db, snat_protocol_t proto,
+ nat64_db_st_walk_fn_t fn, void *ctx);
+
+/**
+ * @brief Free expired session entries in session tables.
+ *
+ * @param db NAT64 DB.
+ * @param now Current time.
+ */
+void nad64_db_st_free_expired (nat64_db_t * db, u32 now);
+
+#endif /* __included_nat64_db_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 IPv6 to IPv4 translation (inside to outside network)
+ */
+
+#include <snat/nat64.h>
+#include <vnet/ip/ip6_to_ip4.h>
+#include <vnet/fib/fib_table.h>
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 next_index;
+} nat64_in2out_trace_t;
+
+static u8 *
+format_nat64_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 *);
+ nat64_in2out_trace_t *t = va_arg (*args, nat64_in2out_trace_t *);
+
+ s =
+ format (s, "NAT64-in2out: sw_if_index %d, next index %d", t->sw_if_index,
+ t->next_index);
+
+ return s;
+}
+
+vlib_node_registration_t nat64_in2out_node;
+
+#define foreach_nat64_in2out_error \
+_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
+_(IN2OUT_PACKETS, "good in2out packets processed") \
+_(NO_TRANSLATION, "no translation") \
+_(UNKNOWN, "unknown")
+
+typedef enum
+{
+#define _(sym,str) NAT64_IN2OUT_ERROR_##sym,
+ foreach_nat64_in2out_error
+#undef _
+ NAT64_IN2OUT_N_ERROR,
+} nat64_in2out_error_t;
+
+static char *nat64_in2out_error_strings[] = {
+#define _(sym,string) string,
+ foreach_nat64_in2out_error
+#undef _
+};
+
+typedef enum
+{
+ NAT64_IN2OUT_NEXT_LOOKUP,
+ NAT64_IN2OUT_NEXT_DROP,
+ NAT64_IN2OUT_N_NEXT,
+} nat64_in2out_next_t;
+
+typedef struct nat64_in2out_set_ctx_t_
+{
+ vlib_buffer_t *b;
+ vlib_main_t *vm;
+} nat64_in2out_set_ctx_t;
+
+static int
+nat64_in2out_tcp_udp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4,
+ void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_in2out_set_ctx_t *ctx = arg;
+ nat64_db_bib_entry_t *bibe;
+ nat64_db_st_entry_t *ste;
+ ip46_address_t saddr, daddr;
+ u32 sw_if_index, fib_index;
+ udp_header_t *udp = ip6_next_header (ip6);
+ snat_protocol_t proto = ip_proto_to_snat_proto (ip6->protocol);
+ u16 sport = udp->src_port;
+ u16 dport = udp->dst_port;
+
+ sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX];
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, sw_if_index);
+
+ saddr.as_u64[0] = ip6->src_address.as_u64[0];
+ saddr.as_u64[1] = ip6->src_address.as_u64[1];
+ daddr.as_u64[0] = ip6->dst_address.as_u64[0];
+ daddr.as_u64[1] = ip6->dst_address.as_u64[1];
+
+ ste =
+ nat64_db_st_entry_find (&nm->db, &saddr, &daddr, sport, dport, proto,
+ fib_index, 1);
+
+ if (ste)
+ {
+ bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index);
+ if (!bibe)
+ return -1;
+ }
+ else
+ {
+ bibe =
+ nat64_db_bib_entry_find (&nm->db, &saddr, sport, proto, fib_index, 1);
+
+ if (!bibe)
+ {
+ u16 out_port;
+ ip4_address_t out_addr;
+ if (nat64_alloc_out_addr_and_port
+ (fib_index, proto, &out_addr, &out_port))
+ return -1;
+
+ bibe =
+ nat64_db_bib_entry_create (&nm->db, &ip6->src_address, &out_addr,
+ sport, clib_host_to_net_u16 (out_port),
+ fib_index, proto, 0);
+ if (!bibe)
+ return -1;
+ }
+
+ ste =
+ nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address,
+ &daddr.ip4, dport);
+ if (!ste)
+ return -1;
+ }
+
+ nat64_session_reset_timeout (ste, ctx->vm);
+
+ ip4->src_address.as_u32 = bibe->out_addr.as_u32;
+ udp->src_port = bibe->out_port;
+
+ ip4->dst_address.as_u32 = daddr.ip4.as_u32;
+
+ return 0;
+}
+
+static int
+nat64_in2out_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_in2out_set_ctx_t *ctx = arg;
+ nat64_db_bib_entry_t *bibe;
+ nat64_db_st_entry_t *ste;
+ ip46_address_t saddr, daddr;
+ u32 sw_if_index, fib_index;
+ icmp46_header_t *icmp = ip6_next_header (ip6);
+
+ sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX];
+ fib_index =
+ fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, sw_if_index);
+
+ saddr.as_u64[0] = ip6->src_address.as_u64[0];
+ saddr.as_u64[1] = ip6->src_address.as_u64[1];
+ daddr.as_u64[0] = ip6->dst_address.as_u64[0];
+ daddr.as_u64[1] = ip6->dst_address.as_u64[1];
+
+ if (icmp->type == ICMP4_echo_request || icmp->type == ICMP4_echo_reply)
+ {
+ u16 in_id = ((u16 *) (icmp))[2];
+ ste =
+ nat64_db_st_entry_find (&nm->db, &saddr, &daddr, in_id, 0,
+ SNAT_PROTOCOL_ICMP, fib_index, 1);
+
+ if (ste)
+ {
+ bibe =
+ nat64_db_bib_entry_by_index (&nm->db, SNAT_PROTOCOL_ICMP,
+ ste->bibe_index);
+ if (!bibe)
+ return -1;
+ }
+ else
+ {
+ bibe =
+ nat64_db_bib_entry_find (&nm->db, &saddr, in_id,
+ SNAT_PROTOCOL_ICMP, fib_index, 1);
+
+ if (!bibe)
+ {
+ u16 out_id;
+ ip4_address_t out_addr;
+ if (nat64_alloc_out_addr_and_port
+ (fib_index, SNAT_PROTOCOL_ICMP, &out_addr, &out_id))
+ return -1;
+
+ bibe =
+ nat64_db_bib_entry_create (&nm->db, &ip6->src_address,
+ &out_addr, in_id,
+ clib_host_to_net_u16 (out_id),
+ fib_index, SNAT_PROTOCOL_ICMP, 0);
+ if (!bibe)
+ return -1;
+ }
+ ste =
+ nat64_db_st_entry_create (&nm->db, bibe, &ip6->dst_address,
+ &daddr.ip4, 0);
+ if (!ste)
+ return -1;
+ }
+
+ nat64_session_reset_timeout (ste, ctx->vm);
+
+ ip4->src_address.as_u32 = bibe->out_addr.as_u32;
+ ((u16 *) (icmp))[2] = bibe->out_port;
+
+ ip4->dst_address.as_u32 = daddr.ip4.as_u32;
+ }
+ else
+ {
+ //TODO: ICMP error
+ clib_warning ("not ICMP echo request/reply, %u", icmp->type);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+nat64_in2out_inner_icmp_set_cb (ip6_header_t * ip6, ip4_header_t * ip4,
+ void *ctx)
+{
+ //TODO:
+ return -1;
+}
+
+static uword
+nat64_in2out_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ nat64_in2out_next_t next_index;
+ u32 pkts_processed = 0;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ ip6_header_t *ip60;
+ u16 l4_offset0, frag_offset0;
+ u8 l4_protocol0;
+ u32 proto0;
+ nat64_in2out_set_ctx_t ctx0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ip60 = vlib_buffer_get_current (b0);
+
+ ctx0.b = b0;
+ ctx0.vm = vm;
+
+ next0 = NAT64_IN2OUT_NEXT_LOOKUP;
+
+ if (PREDICT_FALSE
+ (ip6_parse
+ (ip60, b0->current_length, &l4_protocol0, &l4_offset0,
+ &frag_offset0)))
+ {
+ next0 = NAT64_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT64_IN2OUT_ERROR_UNKNOWN];
+ goto trace0;
+ }
+
+ proto0 = ip_proto_to_snat_proto (l4_protocol0);
+ if (PREDICT_FALSE ((proto0 == ~0) || (frag_offset0 != 0)))
+ {
+ next0 = NAT64_IN2OUT_NEXT_DROP;
+ b0->error =
+ node->errors[NAT64_IN2OUT_ERROR_UNSUPPORTED_PROTOCOL];
+ goto trace0;
+ }
+
+ if (proto0 == SNAT_PROTOCOL_ICMP)
+ {
+ if (icmp6_to_icmp
+ (b0, nat64_in2out_icmp_set_cb, &ctx0,
+ nat64_in2out_inner_icmp_set_cb, &ctx0))
+ {
+ next0 = NAT64_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT64_IN2OUT_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
+ }
+ else
+ {
+ if (ip6_to_ip4_tcp_udp
+ (b0, nat64_in2out_tcp_udp_set_cb, &ctx0, 0))
+ {
+ next0 = NAT64_IN2OUT_NEXT_DROP;
+ b0->error = node->errors[NAT64_IN2OUT_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
+ }
+
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat64_in2out_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ t->next_index = next0;
+ }
+
+ pkts_processed += next0 != NAT64_IN2OUT_NEXT_DROP;
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, nat64_in2out_node.index,
+ NAT64_IN2OUT_ERROR_IN2OUT_PACKETS,
+ pkts_processed);
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (nat64_in2out_node) = {
+ .function = nat64_in2out_node_fn,.name = "nat64-in2out",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat64_in2out_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nat64_in2out_error_strings),
+ .error_strings = nat64_in2out_error_strings,
+ .n_next_nodes = 2,
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [NAT64_IN2OUT_NEXT_DROP] = "error-drop",
+ [NAT64_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat64_in2out_node, nat64_in2out_node_fn);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * 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 NAT64 IPv4 to IPv6 translation (otside to inside network)
+ */
+
+#include <snat/nat64.h>
+#include <vnet/ip/ip4_to_ip6.h>
+#include <vnet/fib/ip4_fib.h>
+
+/* *INDENT-OFF* */
+static u8 well_known_prefix[] = {
+ 0x00, 0x64, 0xff, 0x9b,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00
+ };
+/* *INDENT-ON* */
+typedef struct
+{
+ u32 sw_if_index;
+ u32 next_index;
+} nat64_out2in_trace_t;
+
+static u8 *
+format_nat64_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 *);
+ nat64_out2in_trace_t *t = va_arg (*args, nat64_out2in_trace_t *);
+
+ s =
+ format (s, "NAT64-out2in: sw_if_index %d, next index %d", t->sw_if_index,
+ t->next_index);
+
+ return s;
+}
+
+vlib_node_registration_t nat64_out2in_node;
+
+#define foreach_nat64_out2in_error \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
+_(OUT2IN_PACKETS, "Good out2in packets processed") \
+_(NO_TRANSLATION, "No translation") \
+_(UNKNOWN, "unknown")
+
+typedef enum
+{
+#define _(sym,str) NAT64_OUT2IN_ERROR_##sym,
+ foreach_nat64_out2in_error
+#undef _
+ NAT64_OUT2IN_N_ERROR,
+} nat64_out2in_error_t;
+
+static char *nat64_out2in_error_strings[] = {
+#define _(sym,string) string,
+ foreach_nat64_out2in_error
+#undef _
+};
+
+typedef enum
+{
+ NAT64_OUT2IN_NEXT_LOOKUP,
+ NAT64_OUT2IN_NEXT_DROP,
+ NAT64_OUT2IN_N_NEXT,
+} nat64_out2in_next_t;
+
+typedef struct nat64_out2in_set_ctx_t_
+{
+ vlib_buffer_t *b;
+ vlib_main_t *vm;
+} nat64_out2in_set_ctx_t;
+
+static int
+nat64_out2in_tcp_udp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6,
+ void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_out2in_set_ctx_t *ctx = arg;
+ nat64_db_bib_entry_t *bibe;
+ nat64_db_st_entry_t *ste;
+ ip46_address_t saddr, daddr;
+ ip6_address_t ip6_saddr;
+ udp_header_t *udp = ip4_next_header (ip4);
+ snat_protocol_t proto = ip_proto_to_snat_proto (ip4->protocol);
+ u16 dport = udp->dst_port;
+ u16 sport = udp->src_port;
+ u32 sw_if_index, fib_index;
+
+ sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX];
+ fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ memset (&saddr, 0, sizeof (saddr));
+ saddr.ip4.as_u32 = ip4->src_address.as_u32;
+ memset (&daddr, 0, sizeof (daddr));
+ daddr.ip4.as_u32 = ip4->dst_address.as_u32;
+
+ memcpy (&ip6_saddr, well_known_prefix, sizeof (ip6_saddr));
+ ip6_saddr.as_u32[3] = ip4->src_address.as_u32;
+
+ ste =
+ nat64_db_st_entry_find (&nm->db, &daddr, &saddr, dport, sport, proto,
+ fib_index, 0);
+ if (ste)
+ {
+ bibe = nat64_db_bib_entry_by_index (&nm->db, proto, ste->bibe_index);
+ if (!bibe)
+ return -1;
+ }
+ else
+ {
+ bibe =
+ nat64_db_bib_entry_find (&nm->db, &daddr, dport, proto, fib_index, 0);
+
+ if (!bibe)
+ return -1;
+
+ ste =
+ nat64_db_st_entry_create (&nm->db, bibe, &ip6_saddr, &saddr.ip4,
+ sport);
+ }
+
+ nat64_session_reset_timeout (ste, ctx->vm);
+
+ ip6->src_address.as_u64[0] = ip6_saddr.as_u64[0];
+ ip6->src_address.as_u64[1] = ip6_saddr.as_u64[1];
+
+ ip6->dst_address.as_u64[0] = bibe->in_addr.as_u64[0];
+ ip6->dst_address.as_u64[1] = bibe->in_addr.as_u64[1];
+ udp->dst_port = bibe->in_port;
+
+ return 0;
+}
+
+static int
+nat64_out2in_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_out2in_set_ctx_t *ctx = arg;
+ nat64_db_bib_entry_t *bibe;
+ nat64_db_st_entry_t *ste;
+ ip46_address_t saddr, daddr;
+ ip6_address_t ip6_saddr;
+ u32 sw_if_index, fib_index;
+ icmp46_header_t *icmp = ip4_next_header (ip4);
+
+ sw_if_index = vnet_buffer (ctx->b)->sw_if_index[VLIB_RX];
+ fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ memset (&saddr, 0, sizeof (saddr));
+ saddr.ip4.as_u32 = ip4->src_address.as_u32;
+ memset (&daddr, 0, sizeof (daddr));
+ daddr.ip4.as_u32 = ip4->dst_address.as_u32;
+
+ memcpy (&ip6_saddr, well_known_prefix, sizeof (ip6_saddr));
+ ip6_saddr.as_u32[3] = ip4->src_address.as_u32;
+
+ if (icmp->type == ICMP6_echo_request || icmp->type == ICMP6_echo_reply)
+ {
+ u16 out_id = ((u16 *) (icmp))[2];
+ ste =
+ nat64_db_st_entry_find (&nm->db, &daddr, &saddr, out_id, 0,
+ SNAT_PROTOCOL_ICMP, fib_index, 0);
+
+ if (ste)
+ {
+ bibe =
+ nat64_db_bib_entry_by_index (&nm->db, SNAT_PROTOCOL_ICMP,
+ ste->bibe_index);
+ if (!bibe)
+ return -1;
+ }
+ else
+ {
+ bibe =
+ nat64_db_bib_entry_find (&nm->db, &daddr, out_id,
+ SNAT_PROTOCOL_ICMP, fib_index, 0);
+ if (!bibe)
+ return -1;
+
+ ste =
+ nat64_db_st_entry_create (&nm->db, bibe, &ip6_saddr, &saddr.ip4,
+ 0);
+ }
+
+ nat64_session_reset_timeout (ste, ctx->vm);
+
+ ip6->src_address.as_u64[0] = ip6_saddr.as_u64[0];
+ ip6->src_address.as_u64[1] = ip6_saddr.as_u64[1];
+
+ ip6->dst_address.as_u64[0] = bibe->in_addr.as_u64[0];
+ ip6->dst_address.as_u64[1] = bibe->in_addr.as_u64[1];
+ ((u16 *) (icmp))[2] = bibe->in_port;
+
+ }
+ else
+ {
+ //TODO: ICMP error
+ clib_warning ("not ICMP echo request/reply, %u", icmp->type);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+nat64_out2in_inner_icmp_set_cb (ip4_header_t * ip4, ip6_header_t * ip6,
+ void *ctx)
+{
+ //TODO:
+ return -1;
+}
+
+static uword
+nat64_out2in_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ nat64_out2in_next_t next_index;
+ u32 pkts_processed = 0;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ ip4_header_t *ip40;
+ u32 proto0;
+ nat64_out2in_set_ctx_t ctx0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ip40 = vlib_buffer_get_current (b0);
+
+ ctx0.b = b0;
+ ctx0.vm = vm;
+
+ next0 = NAT64_OUT2IN_NEXT_LOOKUP;
+
+ proto0 = ip_proto_to_snat_proto (ip40->protocol);
+ if (PREDICT_FALSE (proto0 == ~0))
+ {
+ next0 = NAT64_OUT2IN_NEXT_DROP;
+ b0->error =
+ node->errors[NAT64_OUT2IN_ERROR_UNSUPPORTED_PROTOCOL];
+ goto trace0;
+ }
+
+ if (proto0 == SNAT_PROTOCOL_ICMP)
+ {
+ if (icmp_to_icmp6
+ (b0, nat64_out2in_icmp_set_cb, &ctx0,
+ nat64_out2in_inner_icmp_set_cb, &ctx0))
+ {
+ next0 = NAT64_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[NAT64_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
+ }
+ else
+ {
+ if (ip4_to_ip6_tcp_udp (b0, nat64_out2in_tcp_udp_set_cb, &ctx0))
+ {
+ next0 = NAT64_OUT2IN_NEXT_DROP;
+ b0->error = node->errors[NAT64_OUT2IN_ERROR_NO_TRANSLATION];
+ goto trace0;
+ }
+ }
+
+ trace0:
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ nat64_out2in_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ t->next_index = next0;
+ }
+
+ pkts_processed += next0 != NAT64_OUT2IN_NEXT_DROP;
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, nat64_out2in_node.index,
+ NAT64_OUT2IN_ERROR_OUT2IN_PACKETS,
+ pkts_processed);
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (nat64_out2in_node) = {
+ .function = nat64_out2in_node_fn,
+ .name = "nat64-out2in",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nat64_out2in_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nat64_out2in_error_strings),
+ .error_strings = nat64_out2in_error_strings,.n_next_nodes = 2,
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [NAT64_OUT2IN_NEXT_DROP] = "error-drop",
+ [NAT64_OUT2IN_NEXT_LOOKUP] = "ip6-lookup",
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (nat64_out2in_node, nat64_out2in_node_fn);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
u8 state;
u32 expire;
};
+
+/** \brief Add/delete address range to NAT64 pool
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param start_addr - start address of the range
+ @param end_addr - end address of the range
+ @param vrf_id - VRF id of tenant, ~0 means independent of VRF
+ @param is_add - 1 if add, 0 if delete
+*/
+autoreply define nat64_add_del_pool_addr_range {
+ u32 client_index;
+ u32 context;
+ u8 start_addr[4];
+ u8 end_addr[4];
+ u32 vrf_id;
+ u8 is_add;
+};
+
+/** \brief Dump NAT64 pool addresses
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_pool_addr_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief NAT64 pool address details response
+ @param context - sender context, to match reply w/ request
+ @param address - IPv4 address
+ @param vfr_id - VRF id of tenant, ~0 means independent of VRF
+*/
+define nat64_pool_addr_details {
+ u32 context;
+ u8 address[4];
+ u32 vrf_id;
+};
+
+/** \brief Enable/disable NAT64 feature on the interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - index of the interface
+ @param is_inside - 1 if inside, 0 if outside
+ @param is_add - 1 if add, 0 if delete
+*/
+autoreply define nat64_add_del_interface {
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 is_inside;
+ u8 is_add;
+};
+
+/** \brief Dump interfaces with NAT64 feature
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_interface_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief NAT64 interface details response
+ @param context - sender context, to match reply w/ request
+ @param is_inside - 1 if inside, 0 if outside
+ @param sw_if_index - index of the interface
+*/
+define nat64_interface_details {
+ u32 context;
+ u8 is_inside;
+ u32 sw_if_index;
+};
+
+/** \brief Add/delete NAT64 static BIB entry
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param i_addr - inside IPv6 address
+ @param o_addr - outside IPv4 address
+ @param i_port - inside port number
+ @param o_port - outside port number
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+ @param is_add - 1 if add, 0 if delete
+*/
+ autoreply define nat64_add_del_static_bib {
+ u32 client_index;
+ u32 context;
+ u8 i_addr[16];
+ u8 o_addr[4];
+ u16 i_port;
+ u16 o_port;
+ u32 vrf_id;
+ u8 proto;
+ u8 is_add;
+};
+
+/** \brief Dump NAT64 BIB
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param proto - protocol of the BIB
+*/
+define nat64_bib_dump {
+ u32 client_index;
+ u32 context;
+ u8 proto;
+};
+
+/** \brief NAT64 BIB details response
+ @param context - sender context, to match reply w/ request
+ @param i_addr - inside IPv6 address
+ @param o_addr - outside IPv4 address
+ @param i_port - inside port number
+ @param o_port - outside port number
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+ @param is_static - 1 if static BIB entry, 0 if dynamic
+ @param ses_num - number of sessions associated with the BIB entry
+*/
+define nat64_bib_details {
+ u32 context;
+ u8 i_addr[16];
+ u8 o_addr[4];
+ u16 i_port;
+ u16 o_port;
+ u32 vrf_id;
+ u8 proto;
+ u8 is_static;
+ u32 ses_num;
+};
+
+/** \brief Set values of timeouts for NAT64 (seconds, 0 = default)
+ @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 icmp - ICMP timeout (default 60sec)
+ @param tcp_trans - TCP transitory timeout (default 240sec)
+ @param tcp_est - TCP established timeout (default 7440sec)
+ @param tcp_incoming_syn - TCP incoming SYN timeout (default 6sec)
+*/
+autoreply define nat64_set_timeouts {
+ u32 client_index;
+ u32 context;
+ u32 udp;
+ u32 icmp;
+ u32 tcp_trans;
+ u32 tcp_est;
+ u32 tcp_incoming_syn;
+};
+
+/** \brief Get values of timeouts for NAT64 (seconds)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_get_timeouts {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief Get values of timeouts for NAT64 reply
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param udp - UDP timeout
+ @param icmp - ICMP timeout
+ @param tcp_trans - TCP transitory timeout
+ @param tcp_est - TCP established timeout
+ @param tcp_incoming_syn - TCP incoming SYN timeout
+*/
+define nat64_get_timeouts_reply {
+ u32 context;
+ i32 retval;
+ u32 udp;
+ u32 icmp;
+ u32 tcp_trans;
+ u32 tcp_est;
+ u32 tcp_incoming_syn;
+};
+
+/** \brief Dump NAT64 session table
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param proto - protocol of the session table
+*/
+define nat64_st_dump {
+ u32 client_index;
+ u32 context;
+ u8 proto;
+};
+
+/** \brief NAT64 session table details response
+ @param context - sender context, to match reply w/ request
+ @param il_addr - inside IPv6 address of the local host
+ @param ol_addr - outside IPv4 address of the local host
+ @param il_port - inside port number id of the local host/inside ICMP id
+ @param ol_port - outside port number of the local host/outside ICMP id
+ @param il_addr - inside IPv6 address of the remote host
+ @param ol_addr - outside IPv4 address of the remote host
+ @param l_port - port number of the remote host (not used for ICMP)
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+*/
+define nat64_st_details {
+ u32 context;
+ u8 il_addr[16];
+ u8 ol_addr[4];
+ u16 il_port;
+ u16 ol_port;
+ u8 ir_addr[16];
+ u8 or_addr[4];
+ u16 r_port;
+ u32 vrf_id;
+ u8 proto;
+};
#include <snat/snat.h>
#include <snat/snat_ipfix_logging.h>
#include <snat/snat_det.h>
+#include <snat/nat64.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip4_fib.h>
/* Init IPFIX logging */
snat_ipfix_logging_init(vm);
+ error = nat64_init(vm);
+
return error;
}
#define SNAT_UDP_TIMEOUT 300
+#define SNAT_UDP_TIMEOUT_MIN 120
#define SNAT_TCP_TRANSITORY_TIMEOUT 240
#define SNAT_TCP_ESTABLISHED_TIMEOUT 7440
+#define SNAT_TCP_INCOMING_SYN 6
#define SNAT_ICMP_TIMEOUT 60
/* Key */
u16 sequence;
} icmp_echo_header_t;
-always_inline snat_protocol_t
+always_inline u32
ip_proto_to_snat_proto (u8 ip_proto)
{
- snat_protocol_t snat_proto = ~0;
+ u32 snat_proto = ~0;
snat_proto = (ip_proto == IP_PROTOCOL_UDP) ? SNAT_PROTOCOL_UDP : snat_proto;
snat_proto = (ip_proto == IP_PROTOCOL_TCP) ? SNAT_PROTOCOL_TCP : snat_proto;
snat_proto = (ip_proto == IP_PROTOCOL_ICMP) ? SNAT_PROTOCOL_ICMP : snat_proto;
+ snat_proto = (ip_proto == IP_PROTOCOL_ICMP6) ? SNAT_PROTOCOL_ICMP : snat_proto;
return snat_proto;
}
int snat_set_workers (uword * bitmap);
int snat_interface_add_del(u32 sw_if_index, u8 is_inside, int is_del);
int snat_add_interface_address(snat_main_t *sm, u32 sw_if_index, int is_del);
+uword unformat_snat_protocol(unformat_input_t * input, va_list * args);
+u8 * format_snat_protocol(u8 * s, va_list * args);
+
static_always_inline u8
icmp_is_error_message (icmp46_header_t * icmp)
{
#include <snat/snat.h>
#include <snat/snat_det.h>
+#include <snat/nat64.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vlibsocket/api.h>
#include <snat/snat_msg_enum.h>
-#include <vnet/fib/ip4_fib.h>
+#include <vnet/fib/fib_table.h>
/* define message structures */
#define vl_typedefs
rmp->is_ip4 = 1;
clib_memcpy (rmp->ip_address, &(a->addr), 4);
if (a->fib_index != ~0)
- rmp->vrf_id = ntohl (ip4_fib_get (a->fib_index)->table_id);
+ {
+ fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP4);
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ }
else
rmp->vrf_id = ~0;
rmp->context = context;
{
vl_api_snat_user_details_t *rmp;
snat_main_t *sm = &snat_main;
- ip4_fib_t *fib_table;
+ fib_table_t *fib = fib_table_get (u->fib_index, FIB_PROTOCOL_IP4);
rmp = vl_msg_api_alloc (sizeof (*rmp));
memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_SNAT_USER_DETAILS + sm->msg_id_base);
- fib_table = ip4_fib_get (u->fib_index);
- rmp->vrf_id = ntohl (fib_table->table_id);
+ rmp->vrf_id = ntohl (fib->ft_table_id);
rmp->is_ip4 = 1;
clib_memcpy (rmp->ip_address, &(u->addr), 4);
return;
clib_memcpy (&ukey.addr, mp->ip_address, 4);
- ukey.fib_index = ip4_fib_index_from_table_id (ntohl (mp->vrf_id));
+ ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
key.key = ukey.as_u64;
if (!clib_bihash_search_8_8 (&sm->worker_by_in, &key, &value))
tsm = vec_elt_at_index (sm->per_thread_data, value.value);
FINISH;
}
+/****************************/
+/*** detrministic NAT/CGN ***/
+/****************************/
+
static void
vl_api_snat_add_det_map_t_handler (vl_api_snat_add_det_map_t * mp)
{
FINISH;
}
+/*************/
+/*** NAT64 ***/
+/*************/
+
+static void
+ vl_api_nat64_add_del_pool_addr_range_t_handler
+ (vl_api_nat64_add_del_pool_addr_range_t * mp)
+{
+ vl_api_nat64_add_del_pool_addr_range_reply_t *rmp;
+ snat_main_t *sm = &snat_main;
+ int rv = 0;
+ ip4_address_t this_addr;
+ u32 start_host_order, end_host_order;
+ u32 vrf_id;
+ int i, count;
+ u32 *tmp;
+
+ tmp = (u32 *) mp->start_addr;
+ start_host_order = clib_host_to_net_u32 (tmp[0]);
+ tmp = (u32 *) mp->end_addr;
+ end_host_order = clib_host_to_net_u32 (tmp[0]);
+
+ count = (end_host_order - start_host_order) + 1;
+
+ vrf_id = clib_host_to_net_u32 (mp->vrf_id);
+
+ memcpy (&this_addr.as_u8, mp->start_addr, 4);
+
+ for (i = 0; i < count; i++)
+ {
+ if ((rv = nat64_add_del_pool_addr (&this_addr, vrf_id, mp->is_add)))
+ goto send_reply;
+
+ increment_v4_address (&this_addr);
+ }
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_POOL_ADDR_RANGE_REPLY);
+}
+
+static void *vl_api_nat64_add_del_pool_addr_range_t_print
+ (vl_api_nat64_add_del_pool_addr_range_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_add_del_pool_addr_range");
+ s = format (s, "%U - %U vrf_id %u %s\n",
+ format_ip4_address, mp->start_addr,
+ format_ip4_address, mp->end_addr,
+ ntohl (mp->vrf_id), mp->is_add ? "" : "del");
+
+ FINISH;
+}
+
+typedef struct nat64_api_walk_ctx_t_
+{
+ unix_shared_memory_queue_t *q;
+ u32 context;
+} nat64_api_walk_ctx_t;
+
+static int
+nat64_api_pool_walk (snat_address_t * a, void *arg)
+{
+ vl_api_nat64_pool_addr_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ nat64_api_walk_ctx_t *ctx = arg;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_POOL_ADDR_DETAILS + sm->msg_id_base);
+ clib_memcpy (rmp->address, &(a->addr), 4);
+ if (a->fib_index != ~0)
+ {
+ fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP4);
+ if (!fib)
+ return -1;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ }
+ else
+ rmp->vrf_id = ~0;
+ rmp->context = ctx->context;
+
+ vl_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_pool_addr_dump_t_handler (vl_api_nat64_pool_addr_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .q = q,
+ .context = mp->context,
+ };
+
+ nat64_pool_addr_walk (nat64_api_pool_walk, &ctx);
+}
+
+static void *
+vl_api_nat64_pool_addr_dump_t_print (vl_api_nat64_pool_addr_dump_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_pool_addr_dump\n");
+
+ FINISH;
+}
+
+static void
+vl_api_nat64_add_del_interface_t_handler (vl_api_nat64_add_del_interface_t *
+ mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat64_add_del_interface_reply_t *rmp;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv =
+ nat64_add_del_interface (ntohl (mp->sw_if_index), mp->is_inside,
+ mp->is_add);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_REPLY);
+}
+
+static void *
+vl_api_nat64_add_del_interface_t_print (vl_api_nat64_add_del_interface_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_add_del_interface ");
+ s = format (s, "sw_if_index %d %s %s",
+ clib_host_to_net_u32 (mp->sw_if_index),
+ mp->is_inside ? "in" : "out", mp->is_add ? "" : "del");
+
+ FINISH;
+}
+
+static int
+nat64_api_interface_walk (snat_interface_t * i, void *arg)
+{
+ vl_api_nat64_interface_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ nat64_api_walk_ctx_t *ctx = arg;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_INTERFACE_DETAILS + sm->msg_id_base);
+ rmp->sw_if_index = ntohl (i->sw_if_index);
+ rmp->is_inside = i->is_inside;
+ rmp->context = ctx->context;
+
+ vl_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_interface_dump_t_handler (vl_api_nat64_interface_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .q = q,
+ .context = mp->context,
+ };
+
+ nat64_interfaces_walk (nat64_api_interface_walk, &ctx);
+}
+
+static void *
+vl_api_nat64_interface_dump_t_print (vl_api_nat64_interface_dump_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: snat_interface_dump ");
+
+ FINISH;
+}
+
+static void
+ vl_api_nat64_add_del_static_bib_t_handler
+ (vl_api_nat64_add_del_static_bib_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat64_add_del_static_bib_reply_t *rmp;
+ ip6_address_t in_addr;
+ ip4_address_t out_addr;
+ int rv = 0;
+
+ memcpy (&in_addr.as_u8, mp->i_addr, 16);
+ memcpy (&out_addr.as_u8, mp->o_addr, 4);
+
+ rv =
+ nat64_add_del_static_bib_entry (&in_addr, &out_addr,
+ clib_net_to_host_u16 (mp->i_port),
+ clib_net_to_host_u16 (mp->o_port),
+ mp->proto,
+ clib_net_to_host_u32 (mp->vrf_id),
+ mp->is_add);
+
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_STATIC_BIB_REPLY);
+}
+
+static void *vl_api_nat64_add_del_static_bib_t_print
+ (vl_api_nat64_add_del_static_bib_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_add_del_static_bib ");
+ s = format (s, "protocol %d i_addr %U o_addr %U ",
+ mp->proto,
+ format_ip6_address, mp->i_addr, format_ip4_address, mp->o_addr);
+
+ if (mp->vrf_id != ~0)
+ s = format (s, "vrf %d", clib_net_to_host_u32 (mp->vrf_id));
+
+ FINISH;
+}
+
+static int
+nat64_api_bib_walk (nat64_db_bib_entry_t * bibe, void *arg)
+{
+ vl_api_nat64_bib_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ nat64_api_walk_ctx_t *ctx = arg;
+ fib_table_t *fib;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_BIB_DETAILS + sm->msg_id_base);
+ rmp->context = ctx->context;
+ clib_memcpy (rmp->i_addr, &(bibe->in_addr), 16);
+ clib_memcpy (rmp->o_addr, &(bibe->out_addr), 4);
+ rmp->i_port = bibe->in_port;
+ rmp->o_port = bibe->out_port;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ rmp->proto = snat_proto_to_ip_proto (bibe->proto);
+ rmp->is_static = bibe->is_static;
+ rmp->ses_num = ntohl (bibe->ses_num);
+
+ vl_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_bib_dump_t_handler (vl_api_nat64_bib_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ nat64_main_t *nm = &nat64_main;
+ snat_protocol_t proto;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .q = q,
+ .context = mp->context,
+ };
+
+ proto = ip_proto_to_snat_proto (mp->proto);
+
+ nat64_db_bib_walk (&nm->db, proto, nat64_api_bib_walk, &ctx);
+}
+
+static void *
+vl_api_nat64_bib_dump_t_print (vl_api_nat64_bib_dump_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: snat_bib_dump protocol %d", mp->proto);
+
+ FINISH;
+}
+
+static void
+vl_api_nat64_set_timeouts_t_handler (vl_api_nat64_set_timeouts_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat64_set_timeouts_reply_t *rmp;
+ int rv = 0;
+
+ rv = nat64_set_icmp_timeout (ntohl (mp->icmp));
+ if (rv)
+ goto send_reply;
+ rv = nat64_set_udp_timeout (ntohl (mp->udp));
+ if (rv)
+ goto send_reply;
+ rv =
+ nat64_set_tcp_timeouts (ntohl (mp->tcp_trans), ntohl (mp->tcp_est),
+ ntohl (mp->tcp_incoming_syn));
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT64_SET_TIMEOUTS_REPLY);
+}
+
+static void *vl_api_nat64_set_timeouts_t_print
+ (vl_api_nat64_set_timeouts_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_set_timeouts ");
+ s =
+ format (s,
+ "udp %d icmp %d, tcp_trans %d, tcp_est %d, tcp_incoming_syn %d\n",
+ ntohl (mp->udp), ntohl (mp->icmp), ntohl (mp->tcp_trans),
+ ntohl (mp->tcp_est), ntohl (mp->tcp_incoming_syn));
+
+ FINISH;
+}
+
+static void
+vl_api_nat64_get_timeouts_t_handler (vl_api_nat64_get_timeouts_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat64_get_timeouts_reply_t *rmp;
+ int rv = 0;
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT64_GET_TIMEOUTS_REPLY,
+ ({
+ rmp->udp = htonl (nat64_get_udp_timeout());
+ rmp->icmp = htonl (nat64_get_icmp_timeout());
+ rmp->tcp_trans = htonl (nat64_get_tcp_trans_timeout());
+ rmp->tcp_est = htonl (nat64_get_tcp_est_timeout());
+ rmp->tcp_incoming_syn = htonl (nat64_get_tcp_incoming_syn_timeout());
+ }))
+ /* *INDENT-ON* */
+}
+
+static void *vl_api_nat64_get_timeouts_t_print
+ (vl_api_nat64_get_timeouts_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat64_get_timeouts");
+
+ FINISH;
+}
+
+static int
+nat64_api_st_walk (nat64_db_st_entry_t * ste, void *arg)
+{
+ vl_api_nat64_st_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ nat64_api_walk_ctx_t *ctx = arg;
+ nat64_main_t *nm = &nat64_main;
+ nat64_db_bib_entry_t *bibe;
+ fib_table_t *fib;
+
+ bibe = nat64_db_bib_entry_by_index (&nm->db, ste->proto, ste->bibe_index);
+ if (!bibe)
+ return -1;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_ST_DETAILS + sm->msg_id_base);
+ rmp->context = ctx->context;
+ clib_memcpy (rmp->il_addr, &(bibe->in_addr), 16);
+ clib_memcpy (rmp->ol_addr, &(bibe->out_addr), 4);
+ rmp->il_port = bibe->in_port;
+ rmp->ol_port = bibe->out_port;
+ clib_memcpy (rmp->ir_addr, &(ste->in_r_addr), 16);
+ clib_memcpy (rmp->or_addr, &(ste->out_r_addr), 4);
+ rmp->il_port = ste->r_port;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ rmp->proto = snat_proto_to_ip_proto (ste->proto);
+
+ vl_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_st_dump_t_handler (vl_api_nat64_st_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ nat64_main_t *nm = &nat64_main;
+ snat_protocol_t proto;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .q = q,
+ .context = mp->context,
+ };
+
+ proto = ip_proto_to_snat_proto (mp->proto);
+
+ nat64_db_st_walk (&nm->db, proto, nat64_api_st_walk, &ctx);
+}
+
+static void *
+vl_api_nat64_st_dump_t_print (vl_api_nat64_st_dump_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: snat_st_dump protocol %d", mp->proto);
+
+ FINISH;
+}
+
/* List of message types that this plugin understands */
#define foreach_snat_plugin_api_msg \
_(SNAT_ADD_ADDRESS_RANGE, snat_add_address_range) \
_(SNAT_DET_GET_TIMEOUTS, snat_det_get_timeouts) \
_(SNAT_DET_CLOSE_SESSION_OUT, snat_det_close_session_out) \
_(SNAT_DET_CLOSE_SESSION_IN, snat_det_close_session_in) \
-_(SNAT_DET_SESSION_DUMP, snat_det_session_dump)
-
+_(SNAT_DET_SESSION_DUMP, snat_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) \
+_(NAT64_INTERFACE_DUMP, nat64_interface_dump) \
+_(NAT64_ADD_DEL_STATIC_BIB, nat64_add_del_static_bib) \
+_(NAT64_BIB_DUMP, nat64_bib_dump) \
+_(NAT64_SET_TIMEOUTS, nat64_set_timeouts) \
+_(NAT64_GET_TIMEOUTS, nat64_get_timeouts) \
+_(NAT64_ST_DUMP, nat64_st_dump)
/* Set up the API message handling tables */
static clib_error_t *
from framework import VppTestCase, VppTestRunner, running_extended_tests
from scapy.layers.inet import IP, TCP, UDP, ICMP
from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply
from scapy.layers.l2 import Ether, ARP
from scapy.data import IP_PROTOS
from scapy.packet import bind_layers
# 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))
+ TCP(sport=self.tcp_port_in, dport=20))
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))
+ UDP(sport=self.udp_port_in, dport=20))
pkts.append(p)
# ICMP
return pkts
+ def create_stream_in_ip6(self, in_if, out_if, hlim=64):
+ """
+ Create IPv6 packet stream for inside network
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ :param ttl: Hop Limit of generated packets
+ """
+ pkts = []
+ dst = ''.join(['64:ff9b::', out_if.remote_ip4])
+ # TCP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ TCP(sport=self.tcp_port_in, dport=20))
+ pkts.append(p)
+
+ # UDP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ UDP(sport=self.udp_port_in, dport=20))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ ICMPv6EchoRequest(id=self.icmp_id_in))
+ pkts.append(p)
+
+ return pkts
+
def create_stream_out(self, out_if, dst_ip=None, ttl=64):
"""
Create packet stream for outside network
# 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))
+ TCP(dport=self.tcp_port_out, sport=20))
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))
+ UDP(dport=self.udp_port_out, sport=20))
pkts.append(p)
# ICMP
return pkts
def verify_capture_out(self, capture, nat_ip=None, same_port=False,
- packet_num=3):
+ packet_num=3, dst_ip=None):
"""
Verify captured packets on outside network
:param nat_ip: Translated IP address (Default use global SNAT address)
:param same_port: Sorce port number is not translated (Default False)
:param packet_num: Expected number of packets (Default 3)
+ :param dst_ip: Destination IP address (Default do not verify)
"""
if nat_ip is None:
nat_ip = self.snat_addr
for packet in capture:
try:
self.assertEqual(packet[IP].src, nat_ip)
+ if dst_ip is not None:
+ self.assertEqual(packet[IP].dst, dst_ip)
if packet.haslayer(TCP):
if same_port:
self.assertEqual(packet[TCP].sport, self.tcp_port_in)
"(inside network):", packet))
raise
+ def verify_capture_in_ip6(self, capture, src_ip, dst_ip, packet_num=3):
+ """
+ Verify captured IPv6 packets on inside network
+
+ :param capture: Captured packets
+ :param src_ip: Source IP
+ :param dst_ip: Destination IP address
+ :param packet_num: Expected number of packets (Default 3)
+ """
+ self.assertEqual(packet_num, len(capture))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, src_ip)
+ self.assertEqual(packet[IPv6].dst, dst_ip)
+ 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[ICMPv6EchoReply].id,
+ self.icmp_id_in)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet "
+ "(inside network):", packet))
+ raise
+
def verify_capture_no_translation(self, capture, ingress_if, egress_if):
"""
Verify captured packet that don't have to be translated
self.logger.info(self.vapi.cli("show snat detail"))
self.clear_snat()
+
+class TestNAT64(MethodHolder):
+ """ NAT64 Test Cases """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT64, cls).setUpClass()
+
+ try:
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
+
+ cls.create_pg_interfaces(range(2))
+ cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
+ cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
+
+ for i in cls.ip6_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ for i in cls.ip4_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ except Exception:
+ super(TestNAT64, cls).tearDownClass()
+ raise
+
+ def test_pool(self):
+ """ Add/delete address to NAT64 pool """
+ nat_addr = socket.inet_pton(socket.AF_INET, '1.2.3.4')
+
+ self.vapi.nat64_add_del_pool_addr_range(nat_addr, nat_addr)
+
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 1)
+ self.assertEqual(addresses[0].address, nat_addr)
+
+ self.vapi.nat64_add_del_pool_addr_range(nat_addr, nat_addr, is_add=0)
+
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 0)
+
+ def test_interface(self):
+ """ Enable/disable NAT64 feature on the interface """
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+
+ interfaces = self.vapi.nat64_interface_dump()
+ self.assertEqual(len(interfaces), 2)
+ pg0_found = False
+ pg1_found = False
+ for intf in interfaces:
+ if intf.sw_if_index == self.pg0.sw_if_index:
+ self.assertEqual(intf.is_inside, 1)
+ pg0_found = True
+ elif intf.sw_if_index == self.pg1.sw_if_index:
+ self.assertEqual(intf.is_inside, 0)
+ pg1_found = True
+ self.assertTrue(pg0_found)
+ self.assertTrue(pg1_found)
+
+ features = self.vapi.cli("show interface features pg0")
+ self.assertNotEqual(features.find('nat64-in2out'), -1)
+ features = self.vapi.cli("show interface features pg1")
+ self.assertNotEqual(features.find('nat64-out2in'), -1)
+
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index, is_add=0)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_add=0)
+
+ interfaces = self.vapi.nat64_interface_dump()
+ self.assertEqual(len(interfaces), 0)
+
+ def test_static_bib(self):
+ """ Add/delete static BIB entry """
+ in_addr = socket.inet_pton(socket.AF_INET6,
+ '2001:db8:85a3::8a2e:370:7334')
+ out_addr = socket.inet_pton(socket.AF_INET, '10.1.1.3')
+ in_port = 1234
+ out_port = 5678
+ proto = IP_PROTOS.tcp
+
+ self.vapi.nat64_add_del_static_bib(in_addr,
+ out_addr,
+ in_port,
+ out_port,
+ proto)
+ bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp)
+ static_bib_num = 0
+ for bibe in bib:
+ if bibe.is_static:
+ static_bib_num += 1
+ self.assertEqual(bibe.i_addr, in_addr)
+ self.assertEqual(bibe.o_addr, out_addr)
+ self.assertEqual(bibe.i_port, in_port)
+ self.assertEqual(bibe.o_port, out_port)
+ self.assertEqual(static_bib_num, 1)
+
+ self.vapi.nat64_add_del_static_bib(in_addr,
+ out_addr,
+ in_port,
+ out_port,
+ proto,
+ is_add=0)
+ bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp)
+ static_bib_num = 0
+ for bibe in bib:
+ if bibe.is_static:
+ static_bib_num += 1
+ self.assertEqual(static_bib_num, 0)
+
+ def test_set_timeouts(self):
+ """ Set NAT64 timeouts """
+ # verify default values
+ timeouts = self.vapi.nat64_get_timeouts()
+ self.assertEqual(timeouts.udp, 300)
+ self.assertEqual(timeouts.icmp, 60)
+ self.assertEqual(timeouts.tcp_trans, 240)
+ self.assertEqual(timeouts.tcp_est, 7440)
+ self.assertEqual(timeouts.tcp_incoming_syn, 6)
+
+ # set and verify custom values
+ self.vapi.nat64_set_timeouts(udp=200, icmp=30, tcp_trans=250,
+ tcp_est=7450, tcp_incoming_syn=10)
+ timeouts = self.vapi.nat64_get_timeouts()
+ self.assertEqual(timeouts.udp, 200)
+ self.assertEqual(timeouts.icmp, 30)
+ self.assertEqual(timeouts.tcp_trans, 250)
+ self.assertEqual(timeouts.tcp_est, 7450)
+ self.assertEqual(timeouts.tcp_incoming_syn, 10)
+
+ def test_dynamic(self):
+ """ NAT64 dynamic translation test """
+ self.tcp_port_in = 6303
+ self.udp_port_in = 6304
+ self.icmp_id_in = 6305
+
+ ses_num_start = self.nat64_get_ses_num()
+
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+
+ # in2out
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(3)
+ self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(3)
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ # in2out
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(3)
+ self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(3)
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ ses_num_end = self.nat64_get_ses_num()
+
+ self.assertEqual(ses_num_end - ses_num_start, 3)
+
+ def test_static(self):
+ """ NAT64 static translation test """
+ self.tcp_port_in = 60303
+ self.udp_port_in = 60304
+ self.icmp_id_in = 60305
+ self.tcp_port_out = 60303
+ self.udp_port_out = 60304
+ self.icmp_id_out = 60305
+
+ ses_num_start = self.nat64_get_ses_num()
+
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+
+ self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n,
+ self.nat_addr_n,
+ self.tcp_port_in,
+ self.tcp_port_out,
+ IP_PROTOS.tcp)
+ self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n,
+ self.nat_addr_n,
+ self.udp_port_in,
+ self.udp_port_out,
+ IP_PROTOS.udp)
+ self.vapi.nat64_add_del_static_bib(self.pg0.remote_ip6n,
+ self.nat_addr_n,
+ self.icmp_id_in,
+ self.icmp_id_out,
+ IP_PROTOS.icmp)
+
+ # in2out
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(3)
+ self.verify_capture_out(capture, packet_num=3, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4, same_port=True)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(3)
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ ses_num_end = self.nat64_get_ses_num()
+
+ self.assertEqual(ses_num_end - ses_num_start, 3)
+
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_session_timeout(self):
+ """ NAT64 session timeout """
+ self.icmp_id_in = 1234
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+ self.vapi.nat64_set_timeouts(icmp=5)
+
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(3)
+
+ ses_num_before_timeout = self.nat64_get_ses_num()
+
+ sleep(15)
+
+ # ICMP session after timeout
+ ses_num_after_timeout = self.nat64_get_ses_num()
+ self.assertNotEqual(ses_num_before_timeout, ses_num_after_timeout)
+
+ def nat64_get_ses_num(self):
+ """
+ Return number of active NAT64 sessions.
+ """
+ ses_num = 0
+ st = self.vapi.nat64_st_dump(IP_PROTOS.tcp)
+ ses_num += len(st)
+ st = self.vapi.nat64_st_dump(IP_PROTOS.udp)
+ ses_num += len(st)
+ st = self.vapi.nat64_st_dump(IP_PROTOS.icmp)
+ ses_num += len(st)
+ return ses_num
+
+ def clear_nat64(self):
+ """
+ Clear NAT64 configuration.
+ """
+ self.vapi.nat64_set_timeouts()
+
+ interfaces = self.vapi.nat64_interface_dump()
+ for intf in interfaces:
+ self.vapi.nat64_add_del_interface(intf.sw_if_index,
+ intf.is_inside,
+ is_add=0)
+
+ bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp)
+ for bibe in bib:
+ if bibe.is_static:
+ self.vapi.nat64_add_del_static_bib(bibe.i_addr,
+ bibe.o_addr,
+ bibe.i_port,
+ bibe.o_port,
+ bibe.proto,
+ bibe.vrf_id,
+ is_add=0)
+
+ bib = self.vapi.nat64_bib_dump(IP_PROTOS.udp)
+ for bibe in bib:
+ if bibe.is_static:
+ self.vapi.nat64_add_del_static_bib(bibe.i_addr,
+ bibe.o_addr,
+ bibe.i_port,
+ bibe.o_port,
+ bibe.proto,
+ bibe.vrf_id,
+ is_add=0)
+
+ bib = self.vapi.nat64_bib_dump(IP_PROTOS.icmp)
+ for bibe in bib:
+ if bibe.is_static:
+ self.vapi.nat64_add_del_static_bib(bibe.i_addr,
+ bibe.o_addr,
+ bibe.i_port,
+ bibe.o_port,
+ bibe.proto,
+ bibe.vrf_id,
+ is_add=0)
+
+ adresses = self.vapi.nat64_pool_addr_dump()
+ for addr in adresses:
+ self.vapi.nat64_add_del_pool_addr_range(addr.address,
+ addr.address,
+ is_add=0)
+
+ def tearDown(self):
+ super(TestNAT64, self).tearDown()
+ if not self.vpp_dead:
+ self.logger.info(self.vapi.cli("show nat64 pool"))
+ self.logger.info(self.vapi.cli("show nat64 interfaces"))
+ self.logger.info(self.vapi.cli("show nat64 bib tcp"))
+ self.logger.info(self.vapi.cli("show nat64 bib udp"))
+ self.logger.info(self.vapi.cli("show nat64 bib icmp"))
+ self.logger.info(self.vapi.cli("show nat64 session table tcp"))
+ self.logger.info(self.vapi.cli("show nat64 session table udp"))
+ self.logger.info(self.vapi.cli("show nat64 session table icmp"))
+ self.clear_nat64()
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
{'is_ip4': is_ip4,
'user_addr': user_addr})
+ def nat64_add_del_pool_addr_range(
+ self,
+ start_addr,
+ end_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1):
+ """Add/del address range to NAT64 pool
+
+ :param start_addr: First IP address
+ :param end_addr: Last IP address
+ :param vrf_id: VRF id for the address range
+ :param is_add: 1 if add, 0 if delete (Default value = 1)
+ """
+ return self.api(
+ self.papi.nat64_add_del_pool_addr_range,
+ {'start_addr': start_addr,
+ 'end_addr': end_addr,
+ 'vrf_id': vrf_id,
+ 'is_add': is_add})
+
+ def nat64_pool_addr_dump(self):
+ """Dump NAT64 pool addresses
+ :return: Dictionary of NAT64 pool addresses
+ """
+ return self.api(self.papi.nat64_pool_addr_dump, {})
+
+ def nat64_add_del_interface(
+ self,
+ sw_if_index,
+ is_inside=1,
+ is_add=1):
+ """Enable/disable NAT64 feature on the interface
+ :param sw_if_index: Index of the interface
+ :param is_inside: 1 if inside, 0 if outside (Default value = 1)
+ :param is_add: 1 if add, 0 if delete (Default value = 1)
+ """
+ return self.api(
+ self.papi.nat64_add_del_interface,
+ {'sw_if_index': sw_if_index,
+ 'is_inside': is_inside,
+ 'is_add': is_add})
+
+ def nat64_interface_dump(self):
+ """Dump interfaces with NAT64 feature
+ :return: Dictionary of interfaces with NAT64 feature
+ """
+ return self.api(self.papi.nat64_interface_dump, {})
+
+ def nat64_add_del_static_bib(
+ self,
+ in_ip,
+ out_ip,
+ in_port,
+ out_port,
+ protocol,
+ vrf_id=0,
+ is_add=1):
+ """Add/delete S-NAT static BIB entry
+
+ :param in_ip: Inside IPv6 address
+ :param out_ip: Outside IPv4 address
+ :param in_port: Inside port number
+ :param out_port: Outside port number
+ :param protocol: IP protocol
+ :param vrf_id: VRF ID (Default value = 0)
+ :param is_add: 1 if add, 0 if delete (Default value = 1)
+ """
+ return self.api(
+ self.papi.nat64_add_del_static_bib,
+ {'i_addr': in_ip,
+ 'o_addr': out_ip,
+ 'i_port': in_port,
+ 'o_port': out_port,
+ 'vrf_id': vrf_id,
+ 'proto': protocol,
+ 'is_add': is_add})
+
+ def nat64_bib_dump(self, protocol):
+ """Dump NAT64 BIB
+
+ :param protocol: IP protocol
+ :returns: Dictionary of NAT64 BIB entries
+ """
+ return self.api(self.papi.nat64_bib_dump, {'proto': protocol})
+
+ def nat64_set_timeouts(self, udp=300, icmp=60, tcp_trans=240, tcp_est=7440,
+ tcp_incoming_syn=6):
+ """Set values of timeouts for NAT64 (in seconds)
+
+ :param udp - UDP timeout (Default value = 300)
+ :param icmp - ICMP timeout (Default value = 60)
+ :param tcp_trans - TCP transitory timeout (Default value = 240)
+ :param tcp_est - TCP established timeout (Default value = 7440)
+ :param tcp_incoming_syn - TCP incoming SYN timeout (Default value = 6)
+ """
+ return self.api(
+ self.papi.nat64_set_timeouts,
+ {'udp': udp,
+ 'icmp': icmp,
+ 'tcp_trans': tcp_trans,
+ 'tcp_est': tcp_est,
+ 'tcp_incoming_syn': tcp_incoming_syn})
+
+ def nat64_get_timeouts(self):
+ """Get values of timeouts for NAT64
+
+ :return: Timeouts for NAT64 (in seconds)
+ """
+ return self.api(self.papi.nat64_get_timeouts, {})
+
+ def nat64_st_dump(self, protocol):
+ """Dump NAT64 session table
+
+ :param protocol: IP protocol
+ :returns: Dictionary of NAT64 sesstion table entries
+ """
+ return self.api(self.papi.nat64_st_dump, {'proto': protocol})
+
def control_ping(self):
self.api(self.papi.control_ping)
Code Review / vpp.git / commitdiff