2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/plugin/plugin.h>
20 #include <cnat/cnat_translation.h>
21 #include <cnat/cnat_session.h>
22 #include <cnat/cnat_client.h>
23 #include <cnat/cnat_snat.h>
25 #include <vnet/ip/ip_types_api.h>
27 #include <vpp/app/version.h>
29 #include <vlibapi/api.h>
30 #include <vlibmemory/api.h>
32 /* define message IDs */
33 #include <vnet/format_fns.h>
34 #include <cnat/cnat.api_enum.h>
35 #include <cnat/cnat.api_types.h>
38 * Base message ID fot the plugin
40 static u32 cnat_base_msg_id;
42 #define REPLY_MSG_ID_BASE cnat_base_msg_id
44 #include <vlibapi/api_helper_macros.h>
47 cnat_endpoint_decode (const vl_api_cnat_endpoint_t * in,
48 cnat_endpoint_t * out)
50 out->ce_port = clib_net_to_host_u16 (in->port);
51 out->ce_sw_if_index = clib_net_to_host_u32 (in->sw_if_index);
53 if (out->ce_sw_if_index == INDEX_INVALID)
54 ip_address_decode2 (&in->addr, &out->ce_ip);
56 ip_address_family_decode (in->if_af, &out->ce_ip.version);
60 cnat_endpoint_tuple_decode (const vl_api_cnat_endpoint_tuple_t * in,
61 cnat_endpoint_tuple_t * out)
63 cnat_endpoint_decode (&in->src_ep, &out->src_ep);
64 cnat_endpoint_decode (&in->dst_ep, &out->dst_ep);
68 cnat_endpoint_encode (const cnat_endpoint_t * in,
69 vl_api_cnat_endpoint_t * out)
71 out->port = clib_net_to_host_u16 (in->ce_port);
72 out->sw_if_index = clib_net_to_host_u32 (in->ce_sw_if_index);
73 out->if_af = ip_address_family_encode (in->ce_ip.version);
74 if (in->ce_flags & CNAT_EP_FLAG_RESOLVED)
75 ip_address_encode2 (&in->ce_ip, &out->addr);
77 clib_memset ((void *) &in->ce_ip, 0, sizeof (in->ce_ip));
81 vl_api_cnat_translation_update_t_handler (vl_api_cnat_translation_update_t
84 vl_api_cnat_translation_update_reply_t *rmp;
86 cnat_endpoint_tuple_t *paths = NULL, *path;
87 ip_protocol_t ip_proto;
93 rv = ip_proto_decode (mp->translation.ip_proto, &ip_proto);
98 vec_validate (paths, mp->translation.n_paths - 1);
100 for (pi = 0; pi < mp->translation.n_paths; pi++)
103 cnat_endpoint_tuple_decode (&mp->translation.paths[pi], path);
105 cnat_endpoint_decode (&mp->translation.vip, &vip);
107 flags = mp->translation.flags;
108 if (!mp->translation.is_real_ip)
109 flags |= CNAT_FLAG_EXCLUSIVE;
110 id = cnat_translation_update (&vip, ip_proto, paths, flags);
116 REPLY_MACRO2 (VL_API_CNAT_TRANSLATION_UPDATE_REPLY,
118 rmp->id = htonl (id);
124 vl_api_cnat_translation_del_t_handler (vl_api_cnat_translation_del_t * mp)
126 vl_api_cnat_translation_del_reply_t *rmp;
129 rv = cnat_translation_delete (ntohl (mp->id));
131 REPLY_MACRO (VL_API_CNAT_TRANSLATION_DEL_REPLY);
134 typedef struct cnat_dump_walk_ctx_t_
136 vl_api_registration_t *rp;
138 } cnat_dump_walk_ctx_t;
141 cnat_translation_send_details (u32 cti, void *args)
143 vl_api_cnat_translation_details_t *mp;
144 cnat_dump_walk_ctx_t *ctx;
146 vl_api_cnat_endpoint_tuple_t *path;
148 cnat_translation_t *ct;
152 ct = cnat_translation_get (cti);
153 n_paths = vec_len (ct->ct_paths);
154 msg_size = sizeof (*mp) + sizeof (mp->translation.paths[0]) * n_paths;
156 mp = vl_msg_api_alloc_zero (msg_size);
157 mp->_vl_msg_id = ntohs (VL_API_CNAT_TRANSLATION_DETAILS + cnat_base_msg_id);
159 /* fill in the message */
160 mp->context = ctx->context;
161 mp->translation.n_paths = n_paths;
162 mp->translation.id = htonl (cti);
163 cnat_endpoint_encode (&ct->ct_vip, &mp->translation.vip);
164 mp->translation.ip_proto = ip_proto_encode (ct->ct_proto);
166 path = mp->translation.paths;
167 vec_foreach (trk, ct->ct_paths)
169 cnat_endpoint_encode (&trk->ct_ep[VLIB_TX], &path->dst_ep);
170 cnat_endpoint_encode (&trk->ct_ep[VLIB_RX], &path->src_ep);
174 vl_api_send_msg (ctx->rp, (u8 *) mp);
176 return (WALK_CONTINUE);
180 vl_api_cnat_translation_dump_t_handler (vl_api_cnat_translation_dump_t * mp)
182 vl_api_registration_t *rp;
184 rp = vl_api_client_index_to_registration (mp->client_index);
188 cnat_dump_walk_ctx_t ctx = {
190 .context = mp->context,
193 cnat_translation_walk (cnat_translation_send_details, &ctx);
197 ip_address2_from_46 (const ip46_address_t * nh,
198 ip_address_family_t af, ip_address_t * ip)
200 ip_addr_46 (ip) = *nh;
201 ip_addr_version (ip) = af;
205 cnat_session_send_details (const cnat_session_t * session, void *args)
207 vl_api_cnat_session_details_t *mp;
208 cnat_dump_walk_ctx_t *ctx;
213 mp = vl_msg_api_alloc_zero (sizeof (*mp));
214 mp->_vl_msg_id = ntohs (VL_API_CNAT_SESSION_DETAILS + cnat_base_msg_id);
216 /* fill in the message */
217 mp->context = ctx->context;
219 ip_address2_from_46 (&session->value.cs_ip[VLIB_TX], session->key.cs_af,
221 ep.ce_port = clib_host_to_net_u16 (session->value.cs_port[VLIB_TX]);
222 cnat_endpoint_encode (&ep, &mp->session.new);
224 ip_address2_from_46 (&session->key.cs_ip[VLIB_RX], session->key.cs_af,
226 ep.ce_port = clib_host_to_net_u16 (session->key.cs_port[VLIB_RX]);
227 cnat_endpoint_encode (&ep, &mp->session.src);
229 ip_address2_from_46 (&session->key.cs_ip[VLIB_TX], session->key.cs_af,
231 ep.ce_port = clib_host_to_net_u16 (session->key.cs_port[VLIB_TX]);
232 cnat_endpoint_encode (&ep, &mp->session.dst);
234 mp->session.ip_proto = ip_proto_encode (session->key.cs_proto);
236 vl_api_send_msg (ctx->rp, (u8 *) mp);
238 return (WALK_CONTINUE);
242 vl_api_cnat_session_dump_t_handler (vl_api_cnat_session_dump_t * mp)
244 vl_api_registration_t *rp;
246 rp = vl_api_client_index_to_registration (mp->client_index);
250 cnat_dump_walk_ctx_t ctx = {
252 .context = mp->context,
255 cnat_session_walk (cnat_session_send_details, &ctx);
259 vl_api_cnat_session_purge_t_handler (vl_api_cnat_session_purge_t * mp)
261 vl_api_cnat_session_purge_reply_t *rmp;
264 cnat_client_throttle_pool_process ();
265 rv = cnat_session_purge ();
266 rv |= cnat_translation_purge ();
268 REPLY_MACRO (VL_API_CNAT_SESSION_PURGE_REPLY);
272 vl_api_cnat_get_snat_addresses_t_handler (vl_api_cnat_get_snat_addresses_t
275 vl_api_cnat_get_snat_addresses_reply_t *rmp;
279 REPLY_MACRO2 (VL_API_CNAT_GET_SNAT_ADDRESSES_REPLY,
281 ip6_address_encode (&ip_addr_v6(&cnat_main.snat_ip6.ce_ip), rmp->snat_ip6);
282 ip4_address_encode (&ip_addr_v4(&cnat_main.snat_ip4.ce_ip), rmp->snat_ip4);
283 rmp->sw_if_index = clib_host_to_net_u32 (cnat_main.snat_ip6.ce_sw_if_index);
289 vl_api_cnat_set_snat_addresses_t_handler (vl_api_cnat_set_snat_addresses_t
292 vl_api_cnat_set_snat_addresses_reply_t *rmp;
293 u32 sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
298 ip4_address_decode (mp->snat_ip4, &ip4);
299 ip6_address_decode (mp->snat_ip6, &ip6);
301 cnat_set_snat (&ip4, &ip6, sw_if_index);
303 REPLY_MACRO (VL_API_CNAT_SET_SNAT_ADDRESSES_REPLY);
307 vl_api_cnat_add_del_snat_prefix_t_handler
308 (vl_api_cnat_add_del_snat_prefix_t * mp)
310 vl_api_cnat_add_del_snat_prefix_reply_t *rmp;
314 ip_prefix_decode2 (&mp->prefix, &pfx);
316 rv = cnat_add_snat_prefix (&pfx);
318 rv = cnat_del_snat_prefix (&pfx);
320 REPLY_MACRO (VL_API_CNAT_ADD_DEL_SNAT_PREFIX_REPLY);
323 #include <cnat/cnat.api.c>
325 static clib_error_t *
326 cnat_api_init (vlib_main_t * vm)
328 /* Ask for a correctly-sized block of API message decode slots */
329 cnat_base_msg_id = setup_message_id_table ();
334 VLIB_INIT_FUNCTION (cnat_api_init);
337 VLIB_PLUGIN_REGISTER () = {
338 .version = VPP_BUILD_VER,
339 .description = "CNat Translate",
344 * fd.io coding-style-patch-verification: ON
347 * eval: (c-set-style "gnu")