--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @brief Deterministic NAT (CGN) plugin API implementation
+ */
+
+#include <vnet/ip/ip_types_api.h>
+#include <nat/det44/det44.h>
+#include <nat/det44/det44.api_enum.h>
+#include <nat/det44/det44.api_types.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip.h>
+
+#include <vlibmemory/api.h>
+
+#define REPLY_MSG_ID_BASE dm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+vl_api_det44_add_del_map_t_handler (vl_api_det44_add_del_map_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_add_del_map_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t in_addr, out_addr;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ rv = snat_det_add_map (&in_addr, mp->in_plen, &out_addr,
+ mp->out_plen, mp->is_add);
+ REPLY_MACRO (VL_API_DET44_ADD_DEL_MAP_REPLY);
+}
+
+static void
+vl_api_det44_forward_t_handler (vl_api_det44_forward_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_forward_reply_t *rmp;
+ int rv = 0;
+ u16 lo_port = 0, hi_port = 0;
+ snat_det_map_t *m;
+ ip4_address_t in_addr, out_addr;
+
+ out_addr.as_u32 = 0;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_forward (m, &in_addr, &out_addr, &lo_port);
+ hi_port = lo_port + m->ports_per_host - 1;
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_FORWARD_REPLY,
+ ({
+ rmp->out_port_lo = ntohs (lo_port);
+ rmp->out_port_hi = ntohs (hi_port);
+ clib_memcpy (rmp->out_addr, &out_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_reverse_t_handler (vl_api_det44_reverse_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_reverse_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t out_addr, in_addr;
+ snat_det_map_t *m;
+
+ in_addr.as_u32 = 0;
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_reverse (m, &out_addr, htons (mp->out_port), &in_addr);
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_REVERSE_REPLY,
+ ({
+ clib_memcpy (rmp->in_addr, &in_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+sent_det44_map_details (snat_det_map_t * m, vl_api_registration_t * reg,
+ u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_map_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_MAP_DETAILS + dm->msg_id_base);
+ clib_memcpy (rmp->in_addr, &m->in_addr, 4);
+ rmp->in_plen = m->in_plen;
+ clib_memcpy (rmp->out_addr, &m->out_addr, 4);
+ rmp->out_plen = m->out_plen;
+ rmp->sharing_ratio = htonl (m->sharing_ratio);
+ rmp->ports_per_host = htons (m->ports_per_host);
+ rmp->ses_num = htonl (m->ses_num);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_map_dump_t_handler (vl_api_det44_map_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ snat_det_map_t *m;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ vec_foreach(m, dm->det_maps)
+ sent_det44_map_details(m, reg, mp->context);
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_close_session_out_t_handler (vl_api_det44_close_session_out_t
+ * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_close_session_out_reply_t *rmp;
+ ip4_address_t out_addr, ext_addr, in_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_reverse (m, &ext_addr, ntohs (mp->out_port), &in_addr);
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ key.out_port = mp->out_port;
+ ses = snat_det_get_ses_by_out (m, &in_addr, key.as_u64);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_DET44_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+vl_api_det44_close_session_in_t_handler (vl_api_det44_close_session_in_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_close_session_in_reply_t *rmp;
+ ip4_address_t in_addr, ext_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ ses = snat_det_find_ses_by_in (m, &in_addr, mp->in_port, key);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_DET44_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+send_det44_session_details (snat_det_session_t * s,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_session_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_SESSION_DETAILS + dm->msg_id_base);
+ rmp->in_port = s->in_port;
+ clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+ rmp->ext_port = s->out.ext_host_port;
+ rmp->out_port = s->out.out_port;
+ rmp->state = s->state;
+ rmp->expire = ntohl (s->expire);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_session_dump_t_handler (vl_api_det44_session_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+ ip4_address_t user_addr;
+ snat_det_map_t *m;
+ snat_det_session_t *s, empty_ses;
+ u16 i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memset (&empty_ses, 0, sizeof (empty_ses));
+ clib_memcpy (&user_addr, mp->user_addr, 4);
+ m = snat_det_map_by_user (&user_addr);
+ if (!m)
+ return;
+
+ s = m->sessions + snat_det_user_ses_offset (&user_addr, m->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (s->out.as_u64)
+ send_det44_session_details (s, reg, mp->context);
+ s++;
+ }
+}
+
+static void
+ vl_api_det44_plugin_enable_disable_t_handler
+ (vl_api_det44_plugin_enable_disable_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_plugin_enable_disable_reply_t *rmp;
+ det44_config_t c = { 0 };
+ int rv = 0;
+ if (mp->enable)
+ {
+ c.outside_vrf_id = ntohl (mp->outside_vrf);
+ c.inside_vrf_id = ntohl (mp->inside_vrf);
+ rv = det44_plugin_enable (c);
+ }
+ else
+ {
+ rv = det44_plugin_disable ();
+ }
+ REPLY_MACRO (VL_API_DET44_PLUGIN_ENABLE_DISABLE_REPLY);
+}
+
+static void
+ vl_api_det44_interface_add_del_feature_t_handler
+ (vl_api_det44_interface_add_del_feature_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_interface_add_del_feature_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ int rv = 0;
+ VALIDATE_SW_IF_INDEX (mp);
+ rv = det44_interface_add_del (sw_if_index, mp->is_inside, !mp->is_add);
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO (VL_API_DET44_INTERFACE_ADD_DEL_FEATURE_REPLY);
+}
+
+static void
+det44_send_interface_details (det44_interface_t * i,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_interface_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DET44_INTERFACE_DETAILS + dm->msg_id_base);
+ rmp->sw_if_index = ntohl (i->sw_if_index);
+ rmp->is_outside = det44_interface_is_outside (i);
+ rmp->is_inside = det44_interface_is_inside (i);
+ rmp->context = context;
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_det44_interface_dump_t_handler (vl_api_det44_interface_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ det44_interface_t *i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ pool_foreach (i, dm->interfaces,
+ ({
+ det44_send_interface_details(i, reg, mp->context);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_det44_set_timeouts_t_handler (vl_api_det44_set_timeouts_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_set_timeouts_reply_t *rmp;
+ nat_timeouts_t timeouts;
+ int rv = 0;
+ timeouts.udp = ntohl (mp->udp);
+ timeouts.tcp.established = ntohl (mp->tcp_established);
+ timeouts.tcp.transitory = ntohl (mp->tcp_transitory);
+ timeouts.icmp = ntohl (mp->icmp);
+ rv = det44_set_timeouts (&timeouts);
+ REPLY_MACRO (VL_API_DET44_SET_TIMEOUTS_REPLY);
+}
+
+static void
+vl_api_det44_get_timeouts_t_handler (vl_api_det44_get_timeouts_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_det44_get_timeouts_reply_t *rmp;
+ nat_timeouts_t timeouts;
+ int rv = 0;
+ timeouts = det44_get_timeouts ();
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_DET44_GET_TIMEOUTS_REPLY,
+ ({
+ rmp->udp = htonl (timeouts.udp);
+ rmp->tcp_established = htonl (timeouts.tcp.established);
+ rmp->tcp_transitory = htonl (timeouts.tcp.transitory);
+ rmp->icmp = htonl (timeouts.icmp);
+ }))
+ /* *INDENT-ON* */
+}
+
+/*
+ * Obsolete deterministic API to be removed
+ */
+
+static void
+vl_api_nat_det_add_del_map_t_handler (vl_api_nat_det_add_del_map_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_add_del_map_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t in_addr, out_addr;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ rv = snat_det_add_map (&in_addr, mp->in_plen, &out_addr,
+ mp->out_plen, mp->is_add);
+ REPLY_MACRO (VL_API_NAT_DET_ADD_DEL_MAP_REPLY);
+}
+
+static void
+vl_api_nat_det_forward_t_handler (vl_api_nat_det_forward_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_forward_reply_t *rmp;
+ int rv = 0;
+ u16 lo_port = 0, hi_port = 0;
+ snat_det_map_t *m;
+ ip4_address_t in_addr, out_addr;
+
+ out_addr.as_u32 = 0;
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_forward (m, &in_addr, &out_addr, &lo_port);
+ hi_port = lo_port + m->ports_per_host - 1;
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_DET_FORWARD_REPLY,
+ ({
+ rmp->out_port_lo = ntohs (lo_port);
+ rmp->out_port_hi = ntohs (hi_port);
+ clib_memcpy (rmp->out_addr, &out_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_nat_det_reverse_t_handler (vl_api_nat_det_reverse_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_reverse_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t out_addr, in_addr;
+ snat_det_map_t *m;
+
+ in_addr.as_u32 = 0;
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+
+ snat_det_reverse (m, &out_addr, htons (mp->out_port), &in_addr);
+
+send_reply:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_DET_REVERSE_REPLY,
+ ({
+ clib_memcpy (rmp->in_addr, &in_addr, 4);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+sent_nat_det_map_details (snat_det_map_t * m, vl_api_registration_t * reg,
+ u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_map_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_MAP_DETAILS + dm->msg_id_base);
+ clib_memcpy (rmp->in_addr, &m->in_addr, 4);
+ rmp->in_plen = m->in_plen;
+ clib_memcpy (rmp->out_addr, &m->out_addr, 4);
+ rmp->out_plen = m->out_plen;
+ rmp->sharing_ratio = htonl (m->sharing_ratio);
+ rmp->ports_per_host = htons (m->ports_per_host);
+ rmp->ses_num = htonl (m->ses_num);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat_det_map_dump_t_handler (vl_api_nat_det_map_dump_t * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_registration_t *reg;
+ snat_det_map_t *m;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ /* *INDENT-OFF* */
+ vec_foreach(m, dm->det_maps)
+ sent_nat_det_map_details(m, reg, mp->context);
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_nat_det_close_session_out_t_handler (vl_api_nat_det_close_session_out_t
+ * mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_close_session_out_reply_t *rmp;
+ ip4_address_t out_addr, ext_addr, in_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&out_addr, mp->out_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_out (&out_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_reverse (m, &ext_addr, ntohs (mp->out_port), &in_addr);
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ key.out_port = mp->out_port;
+ ses = snat_det_get_ses_by_out (m, &in_addr, key.as_u64);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+vl_api_nat_det_close_session_in_t_handler (vl_api_nat_det_close_session_in_t *
+ mp)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_close_session_in_reply_t *rmp;
+ ip4_address_t in_addr, ext_addr;
+ snat_det_out_key_t key;
+ snat_det_map_t *m;
+ snat_det_session_t *ses;
+ int rv = 0;
+
+ clib_memcpy (&in_addr, mp->in_addr, 4);
+ clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+ m = snat_det_map_by_user (&in_addr);
+ if (!m)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ key.ext_host_addr = ext_addr;
+ key.ext_host_port = mp->ext_port;
+ ses = snat_det_find_ses_by_in (m, &in_addr, mp->in_port, key);
+ if (!ses)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+ goto send_reply;
+ }
+ snat_det_ses_close (m, ses);
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void
+send_nat_det_session_details (snat_det_session_t * s,
+ vl_api_registration_t * reg, u32 context)
+{
+ det44_main_t *dm = &det44_main;
+ vl_api_nat_det_session_details_t *rmp;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_SESSION_DETAILS + dm->msg_id_base);
+ rmp->in_port = s->in_port;
+ clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+ rmp->ext_port = s->out.ext_host_port;
+ rmp->out_port = s->out.out_port;
+ rmp->state = s->state;
+ rmp->expire = ntohl (s->expire);
+ rmp->context = context;
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat_det_session_dump_t_handler (vl_api_nat_det_session_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+ ip4_address_t user_addr;
+ snat_det_map_t *m;
+ snat_det_session_t *s, empty_ses;
+ u16 i;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memset (&empty_ses, 0, sizeof (empty_ses));
+ clib_memcpy (&user_addr, mp->user_addr, 4);
+ m = snat_det_map_by_user (&user_addr);
+ if (!m)
+ return;
+
+ s = m->sessions + snat_det_user_ses_offset (&user_addr, m->in_plen);
+ for (i = 0; i < DET44_SES_PER_USER; i++)
+ {
+ if (s->out.as_u64)
+ send_nat_det_session_details (s, reg, mp->context);
+ s++;
+ }
+}
+
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <nat/det44/det44.api.c>
+
+/* Set up the API message handling tables */
+clib_error_t *
+det44_api_hookup (vlib_main_t * vm)
+{
+ det44_main_t *dm = &det44_main;
+ dm->msg_id_base = setup_message_id_table ();
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff