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_policy.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)
51 out->ce_port = clib_net_to_host_u16 (in->port);
52 out->ce_sw_if_index = clib_net_to_host_u32 (in->sw_if_index);
54 if (out->ce_sw_if_index == INDEX_INVALID)
55 ip_address_decode2 (&in->addr, &out->ce_ip);
57 rv = ip_address_family_decode (in->if_af, &out->ce_ip.version);
62 cnat_endpoint_tuple_decode (const vl_api_cnat_endpoint_tuple_t * in,
63 cnat_endpoint_tuple_t * out)
66 rv = cnat_endpoint_decode (&in->src_ep, &out->src_ep);
69 rv = cnat_endpoint_decode (&in->dst_ep, &out->dst_ep);
70 out->ep_flags = in->flags;
75 cnat_endpoint_encode (const cnat_endpoint_t * in,
76 vl_api_cnat_endpoint_t * out)
78 out->port = clib_net_to_host_u16 (in->ce_port);
79 out->sw_if_index = clib_net_to_host_u32 (in->ce_sw_if_index);
80 out->if_af = ip_address_family_encode (in->ce_ip.version);
81 if (in->ce_flags & CNAT_EP_FLAG_RESOLVED)
82 ip_address_encode2 (&in->ce_ip, &out->addr);
84 clib_memset (&out->addr, 0, sizeof (out->addr));
88 vl_api_cnat_translation_update_t_handler (vl_api_cnat_translation_update_t
91 vl_api_cnat_translation_update_reply_t *rmp;
93 cnat_endpoint_tuple_t *paths = NULL, *path;
94 ip_protocol_t ip_proto;
99 cnat_lb_type_t lb_type;
100 flow_hash_config_t flow_hash_config = 0;
102 rv = ip_proto_decode (mp->translation.ip_proto, &ip_proto);
107 n_paths = clib_net_to_host_u32 (mp->translation.n_paths);
108 vec_validate (paths, n_paths - 1);
110 for (pi = 0; pi < n_paths; pi++)
113 rv = cnat_endpoint_tuple_decode (&mp->translation.paths[pi], path);
118 rv = cnat_endpoint_decode (&mp->translation.vip, &vip);
122 flags = mp->translation.flags;
123 if (!mp->translation.is_real_ip)
124 flags |= CNAT_FLAG_EXCLUSIVE;
126 lb_type = (cnat_lb_type_t) mp->translation.lb_type;
127 flow_hash_config = (flow_hash_config_t) clib_net_to_host_u32 (
128 mp->translation.flow_hash_config);
129 id = cnat_translation_update (&vip, ip_proto, paths, flags, lb_type,
135 REPLY_MACRO2 (VL_API_CNAT_TRANSLATION_UPDATE_REPLY,
137 rmp->id = htonl (id);
142 vl_api_cnat_translation_del_t_handler (vl_api_cnat_translation_del_t * mp)
144 vl_api_cnat_translation_del_reply_t *rmp;
147 rv = cnat_translation_delete (ntohl (mp->id));
149 REPLY_MACRO (VL_API_CNAT_TRANSLATION_DEL_REPLY);
152 typedef struct cnat_dump_walk_ctx_t_
154 vl_api_registration_t *rp;
156 } cnat_dump_walk_ctx_t;
159 cnat_translation_send_details (u32 cti, void *args)
161 vl_api_cnat_translation_details_t *mp;
162 cnat_dump_walk_ctx_t *ctx;
164 vl_api_cnat_endpoint_tuple_t *path;
166 cnat_translation_t *ct;
170 ct = cnat_translation_get (cti);
171 n_paths = vec_len (ct->ct_paths);
172 msg_size = sizeof (*mp) + sizeof (mp->translation.paths[0]) * n_paths;
174 mp = vl_msg_api_alloc_zero (msg_size);
175 mp->_vl_msg_id = ntohs (VL_API_CNAT_TRANSLATION_DETAILS + cnat_base_msg_id);
177 /* fill in the message */
178 mp->context = ctx->context;
179 mp->translation.n_paths = clib_host_to_net_u32 (n_paths);
180 mp->translation.id = clib_host_to_net_u32 (cti);
181 cnat_endpoint_encode (&ct->ct_vip, &mp->translation.vip);
182 mp->translation.ip_proto = ip_proto_encode (ct->ct_proto);
183 mp->translation.lb_type = (vl_api_cnat_lb_type_t) ct->lb_type;
185 path = mp->translation.paths;
186 vec_foreach (trk, ct->ct_paths)
188 cnat_endpoint_encode (&trk->ct_ep[VLIB_TX], &path->dst_ep);
189 cnat_endpoint_encode (&trk->ct_ep[VLIB_RX], &path->src_ep);
190 path->flags = trk->ct_flags;
194 vl_api_send_msg (ctx->rp, (u8 *) mp);
196 return (WALK_CONTINUE);
200 vl_api_cnat_translation_dump_t_handler (vl_api_cnat_translation_dump_t * mp)
202 vl_api_registration_t *rp;
204 rp = vl_api_client_index_to_registration (mp->client_index);
208 cnat_dump_walk_ctx_t ctx = {
210 .context = mp->context,
213 cnat_translation_walk (cnat_translation_send_details, &ctx);
217 ip_address2_from_46 (const ip46_address_t * nh,
218 ip_address_family_t af, ip_address_t * ip)
220 ip_addr_46 (ip) = *nh;
221 ip_addr_version (ip) = af;
225 cnat_session_send_details (const cnat_session_t * session, void *args)
227 vl_api_cnat_session_details_t *mp;
228 cnat_dump_walk_ctx_t *ctx;
233 mp = vl_msg_api_alloc_zero (sizeof (*mp));
234 mp->_vl_msg_id = ntohs (VL_API_CNAT_SESSION_DETAILS + cnat_base_msg_id);
236 /* fill in the message */
237 mp->context = ctx->context;
239 ep.ce_sw_if_index = INDEX_INVALID;
240 ep.ce_flags = CNAT_EP_FLAG_RESOLVED;
241 ip_address2_from_46 (&session->value.cs_ip[VLIB_TX], session->key.cs_af,
243 ep.ce_port = clib_host_to_net_u16 (session->value.cs_port[VLIB_TX]);
244 cnat_endpoint_encode (&ep, &mp->session.new);
246 ip_address2_from_46 (&session->key.cs_ip[VLIB_RX], session->key.cs_af,
248 ep.ce_port = clib_host_to_net_u16 (session->key.cs_port[VLIB_RX]);
249 cnat_endpoint_encode (&ep, &mp->session.src);
251 ip_address2_from_46 (&session->key.cs_ip[VLIB_TX], session->key.cs_af,
253 ep.ce_port = clib_host_to_net_u16 (session->key.cs_port[VLIB_TX]);
254 cnat_endpoint_encode (&ep, &mp->session.dst);
256 mp->session.ip_proto = ip_proto_encode (session->key.cs_proto);
257 mp->session.location = session->key.cs_loc;
259 vl_api_send_msg (ctx->rp, (u8 *) mp);
261 return (WALK_CONTINUE);
265 vl_api_cnat_session_dump_t_handler (vl_api_cnat_session_dump_t * mp)
267 vl_api_registration_t *rp;
269 rp = vl_api_client_index_to_registration (mp->client_index);
273 cnat_dump_walk_ctx_t ctx = {
275 .context = mp->context,
278 cnat_session_walk (cnat_session_send_details, &ctx);
282 vl_api_cnat_session_purge_t_handler (vl_api_cnat_session_purge_t * mp)
284 vl_api_cnat_session_purge_reply_t *rmp;
287 cnat_client_throttle_pool_process ();
288 rv = cnat_session_purge ();
289 rv |= cnat_translation_purge ();
291 REPLY_MACRO (VL_API_CNAT_SESSION_PURGE_REPLY);
295 vl_api_cnat_get_snat_addresses_t_handler (vl_api_cnat_get_snat_addresses_t
298 vl_api_cnat_get_snat_addresses_reply_t *rmp;
299 cnat_snat_policy_main_t *cpm = &cnat_snat_policy_main;
303 VL_API_CNAT_GET_SNAT_ADDRESSES_REPLY, ({
304 ip6_address_encode (&ip_addr_v6 (&cpm->snat_ip6.ce_ip), rmp->snat_ip6);
305 ip4_address_encode (&ip_addr_v4 (&cpm->snat_ip4.ce_ip), rmp->snat_ip4);
306 rmp->sw_if_index = clib_host_to_net_u32 (cpm->snat_ip6.ce_sw_if_index);
311 vl_api_cnat_set_snat_addresses_t_handler (vl_api_cnat_set_snat_addresses_t
314 vl_api_cnat_set_snat_addresses_reply_t *rmp;
315 u32 sw_if_index = clib_net_to_host_u32 (mp->sw_if_index);
320 ip4_address_decode (mp->snat_ip4, &ip4);
321 ip6_address_decode (mp->snat_ip6, &ip6);
323 cnat_set_snat (&ip4, &ip6, sw_if_index);
325 REPLY_MACRO (VL_API_CNAT_SET_SNAT_ADDRESSES_REPLY);
329 vl_api_cnat_set_snat_policy_t_handler (vl_api_cnat_set_snat_policy_t *mp)
331 vl_api_cnat_set_snat_policy_reply_t *rmp;
333 cnat_snat_policy_type_t policy = (cnat_snat_policy_type_t) mp->policy;
335 rv = cnat_set_snat_policy (policy);
337 REPLY_MACRO (VL_API_CNAT_SET_SNAT_POLICY_REPLY);
341 vl_api_cnat_snat_policy_add_del_exclude_pfx_t_handler (
342 vl_api_cnat_snat_policy_add_del_exclude_pfx_t *mp)
344 vl_api_cnat_snat_policy_add_del_exclude_pfx_reply_t *rmp;
348 ip_prefix_decode2 (&mp->prefix, &pfx);
350 rv = cnat_snat_policy_add_pfx (&pfx);
352 rv = cnat_snat_policy_del_pfx (&pfx);
354 REPLY_MACRO (VL_API_CNAT_SNAT_POLICY_ADD_DEL_EXCLUDE_PFX_REPLY);
358 vl_api_cnat_snat_policy_add_del_if_t_handler (
359 vl_api_cnat_snat_policy_add_del_if_t *mp)
361 vl_api_cnat_snat_policy_add_del_if_reply_t *rmp;
362 u32 sw_if_index = ntohl (mp->sw_if_index);
365 VALIDATE_SW_IF_INDEX (mp);
367 cnat_snat_interface_map_type_t table =
368 (cnat_snat_interface_map_type_t) mp->table;
370 rv = cnat_snat_policy_add_del_if (sw_if_index, mp->is_add, table);
372 BAD_SW_IF_INDEX_LABEL;
374 REPLY_MACRO (VL_API_CNAT_SNAT_POLICY_ADD_DEL_IF_REPLY);
377 #include <cnat/cnat.api.c>
379 static clib_error_t *
380 cnat_api_init (vlib_main_t * vm)
382 /* Ask for a correctly-sized block of API message decode slots */
383 cnat_base_msg_id = setup_message_id_table ();
388 VLIB_INIT_FUNCTION (cnat_api_init);
390 VLIB_PLUGIN_REGISTER () = {
391 .version = VPP_BUILD_VER,
392 .description = "CNat Translate",
396 * fd.io coding-style-patch-verification: ON
399 * eval: (c-set-style "gnu")