2 *------------------------------------------------------------------
3 * ip_api.c - vnet ip api
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
22 #include <vnet/ip-neighbor/ip_neighbor.h>
23 #include <vnet/ip-neighbor/ip_neighbor_watch.h>
24 #include <vnet/ip/ip_types_api.h>
25 #include <vnet/ethernet/ethernet_types_api.h>
27 #include <vlibapi/api.h>
28 #include <vlibmemory/api.h>
30 #include <vnet/ip-neighbor/ip_neighbor.api_enum.h>
31 #include <vnet/ip-neighbor/ip_neighbor.api_types.h>
33 static u16 msg_id_base;
34 #define REPLY_MSG_ID_BASE msg_id_base
36 #include <vlibapi/api_helper_macros.h>
38 #include <vnet/format_fns.h>
40 static vl_api_ip_neighbor_flags_t
41 ip_neighbor_flags_encode (ip_neighbor_flags_t f)
43 vl_api_ip_neighbor_flags_t v = IP_API_NEIGHBOR_FLAG_NONE;
45 if (f & IP_NEIGHBOR_FLAG_STATIC)
46 v |= IP_API_NEIGHBOR_FLAG_STATIC;
47 if (f & IP_NEIGHBOR_FLAG_NO_FIB_ENTRY)
48 v |= IP_API_NEIGHBOR_FLAG_NO_FIB_ENTRY;
54 ip_neighbor_encode (vl_api_ip_neighbor_t * api, const ip_neighbor_t * ipn)
56 api->sw_if_index = htonl (ipn->ipn_key->ipnk_sw_if_index);
57 api->flags = ip_neighbor_flags_encode (ipn->ipn_flags);
59 ip_address_encode2 (&ipn->ipn_key->ipnk_ip, &api->ip_address);
60 mac_address_encode (&ipn->ipn_mac, api->mac_address);
64 ip_neighbor_handle_event (const ip_neighbor_event_t * ipne)
66 vl_api_ip_neighbor_event_t *mp;
67 vl_api_registration_t *reg;
68 const ip_neighbor_t *ipn;
70 ipn = ip_neighbor_get (ipne->ipne_index);
73 /* Client can cancel, die, etc. */
76 /* Customer(s) requesting event for this neighbor */
77 reg = vl_api_client_index_to_registration (ipne->ipne_watch.ipw_client);
81 if (vl_api_can_send_msg (reg))
83 mp = vl_msg_api_alloc (sizeof (*mp));
84 clib_memset (mp, 0, sizeof (*mp));
85 mp->_vl_msg_id = ntohs (VL_API_IP_NEIGHBOR_EVENT + REPLY_MSG_ID_BASE);
86 mp->client_index = ipne->ipne_watch.ipw_client;
87 mp->pid = ipne->ipne_watch.ipw_pid;
89 ip_neighbor_encode (&mp->neighbor, ipn);
91 vl_api_send_msg (reg, (u8 *) mp);
97 * Throttle syslog msgs.
98 * It's pretty tempting to just revoke the registration...
100 if (vlib_time_now (vlib_get_main ()) > last_time + 10.0)
102 clib_warning ("ip6 nd event for %U to pid %d: queue stuffed!",
103 format_ip_address, &ipn->ipn_key->ipnk_ip,
104 ipne->ipne_watch.ipw_pid);
105 last_time = vlib_time_now (vlib_get_main ());
110 typedef struct ip_neighbor_dump_ctx_t_
112 vl_api_registration_t *reg;
114 } ip_neighbor_dump_ctx_t;
117 send_ip_neighbor_details (index_t ipni, void *arg)
119 ip_neighbor_dump_ctx_t *ctx = arg;
120 vl_api_ip_neighbor_details_t *mp;
123 ipn = ip_neighbor_get (ipni);
124 mp = vl_msg_api_alloc (sizeof (*mp));
125 clib_memset (mp, 0, sizeof (*mp));
126 mp->_vl_msg_id = ntohs (VL_API_IP_NEIGHBOR_DETAILS + REPLY_MSG_ID_BASE);
127 mp->context = ctx->context;
129 clib_host_to_net_f64 ((vlib_time_now (vlib_get_main ()) -
130 ipn->ipn_time_last_updated));
131 ip_neighbor_encode (&mp->neighbor, ipn);
133 vl_api_send_msg (ctx->reg, (u8 *) mp);
135 return (WALK_CONTINUE);
139 vl_api_ip_neighbor_dump_t_handler (vl_api_ip_neighbor_dump_t * mp)
141 vl_api_registration_t *reg;
142 ip_address_family_t af;
145 reg = vl_api_client_index_to_registration (mp->client_index);
149 u32 sw_if_index = ntohl (mp->sw_if_index);
151 rv = ip_address_family_decode (mp->af, &af);
156 ip_neighbor_dump_ctx_t ctx = {
158 .context = mp->context,
161 // walk all neighbours on all interfaces
162 ip_neighbor_walk (af, sw_if_index, send_ip_neighbor_details, &ctx);
165 static ip_neighbor_flags_t
166 ip_neighbor_flags_decode (vl_api_ip_neighbor_flags_t v)
168 ip_neighbor_flags_t f = IP_NEIGHBOR_FLAG_NONE;
170 if (v & IP_API_NEIGHBOR_FLAG_STATIC)
171 f |= IP_NEIGHBOR_FLAG_STATIC;
172 if (v & IP_API_NEIGHBOR_FLAG_NO_FIB_ENTRY)
173 f |= IP_NEIGHBOR_FLAG_NO_FIB_ENTRY;
179 vl_api_ip_neighbor_add_del_t_handler (vl_api_ip_neighbor_add_del_t * mp,
182 vl_api_ip_neighbor_add_del_reply_t *rmp;
183 ip_neighbor_flags_t flags;
184 u32 stats_index = ~0;
185 ip_address_t ip = ip_address_initializer;
189 VALIDATE_SW_IF_INDEX ((&mp->neighbor));
191 flags = ip_neighbor_flags_decode (mp->neighbor.flags);
192 ip_address_decode2 (&mp->neighbor.ip_address, &ip);
193 mac_address_decode (mp->neighbor.mac_address, &mac);
195 /* must be static or dynamic, default to dynamic */
196 if (!(flags & IP_NEIGHBOR_FLAG_STATIC) &&
197 !(flags & IP_NEIGHBOR_FLAG_DYNAMIC))
198 flags |= IP_NEIGHBOR_FLAG_DYNAMIC;
201 * there's no validation here of the ND/ARP entry being added.
202 * The expectation is that the FIB will ensure that nothing bad
203 * will come of adding bogus entries.
206 rv = ip_neighbor_add (&ip, &mac,
207 ntohl (mp->neighbor.sw_if_index),
208 flags, &stats_index);
210 rv = ip_neighbor_del (&ip, ntohl (mp->neighbor.sw_if_index));
212 BAD_SW_IF_INDEX_LABEL;
215 REPLY_MACRO2 (VL_API_IP_NEIGHBOR_ADD_DEL_REPLY,
217 rmp->stats_index = htonl (stats_index);
223 vl_api_want_ip_neighbor_events_t_handler (vl_api_want_ip_neighbor_events_t *
226 vl_api_want_ip_neighbor_events_reply_t *rmp;
230 if (mp->sw_if_index != ~0)
231 VALIDATE_SW_IF_INDEX (mp);
232 ip_address_decode2 (&mp->ip, &ip);
234 ip_neighbor_watcher_t watch = {
235 .ipw_client = mp->client_index,
240 ip_neighbor_watch (&ip, ntohl (mp->sw_if_index), &watch);
242 ip_neighbor_unwatch (&ip, ntohl (mp->sw_if_index), &watch);
244 BAD_SW_IF_INDEX_LABEL;
245 REPLY_MACRO (VL_API_WANT_IP_NEIGHBOR_EVENTS_REPLY);
249 vl_api_ip_neighbor_config_t_handler (vl_api_ip_neighbor_config_t * mp)
251 vl_api_ip_neighbor_config_reply_t *rmp;
252 ip_address_family_t af;
255 rv = ip_address_family_decode (mp->af, &af);
258 rv = ip_neighbor_config (af,
259 ntohl (mp->max_number),
260 ntohl (mp->max_age), mp->recycle);
262 REPLY_MACRO (VL_API_IP_NEIGHBOR_CONFIG_REPLY);
266 vl_api_ip_neighbor_replace_begin_t_handler (vl_api_ip_neighbor_replace_begin_t
269 vl_api_ip_neighbor_replace_begin_reply_t *rmp;
272 ip_neighbor_mark (AF_IP4);
273 ip_neighbor_mark (AF_IP6);
275 REPLY_MACRO (VL_API_IP_NEIGHBOR_REPLACE_BEGIN_REPLY);
279 vl_api_ip_neighbor_replace_end_t_handler (vl_api_ip_neighbor_replace_end_t *
282 vl_api_ip_neighbor_replace_end_reply_t *rmp;
285 ip_neighbor_sweep (AF_IP4);
286 ip_neighbor_sweep (AF_IP6);
288 REPLY_MACRO (VL_API_IP_NEIGHBOR_REPLACE_END_REPLY);
292 vl_api_ip_neighbor_flush_t_handler (vl_api_ip_neighbor_flush_t * mp)
294 vl_api_ip_neighbor_flush_reply_t *rmp;
295 ip_address_family_t af;
298 if (mp->sw_if_index != ~0)
299 VALIDATE_SW_IF_INDEX (mp);
301 rv = ip_address_family_decode (mp->af, &af);
304 ip_neighbor_del_all (af, ntohl (mp->sw_if_index));
306 BAD_SW_IF_INDEX_LABEL;
307 REPLY_MACRO (VL_API_IP_NEIGHBOR_FLUSH_REPLY);
310 #define vl_msg_name_crc_list
311 #include <vnet/ip-neighbor/ip_neighbor.api.h>
312 #undef vl_msg_name_crc_list
314 #include <vnet/ip-neighbor/ip_neighbor.api.c>
316 static clib_error_t *
317 ip_neighbor_api_init (vlib_main_t * vm)
319 /* Ask for a correctly-sized block of API message decode slots */
320 msg_id_base = setup_message_id_table ();
325 VLIB_API_INIT_FUNCTION (ip_neighbor_api_init);
328 * fd.io coding-style-patch-verification: ON
331 * eval: (c-set-style "gnu")