789bb27386c8723cdc09a0d6843674cd919ce20b
[vpp.git] / src / vnet / srv6 / sr_api.c
1 /*
2  *------------------------------------------------------------------
3  * sr_api.c - ipv6 segment routing api
4  *
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:
9  *
10  *     http://www.apache.org/licenses/LICENSE-2.0
11  *
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  *------------------------------------------------------------------
18  */
19
20 #include <vnet/vnet.h>
21 #include <vnet/srv6/sr.h>
22 #include <vlibmemory/api.h>
23
24 #include <vnet/interface.h>
25 #include <vnet/api_errno.h>
26 #include <vnet/feature/feature.h>
27
28 #include <vnet/vnet_msg_enum.h>
29
30 #define vl_typedefs             /* define message structures */
31 #include <vnet/vnet_all_api_h.h>
32 #undef vl_typedefs
33
34 #define vl_endianfun            /* define message structures */
35 #include <vnet/vnet_all_api_h.h>
36 #undef vl_endianfun
37
38 /* instantiate all the print functions we know about */
39 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
40 #define vl_printfun
41 #include <vnet/vnet_all_api_h.h>
42 #undef vl_printfun
43
44 #include <vlibapi/api_helper_macros.h>
45
46 #define foreach_vpe_api_msg                             \
47 _(SR_LOCALSID_ADD_DEL, sr_localsid_add_del)             \
48 _(SR_POLICY_DEL, sr_policy_del)                         \
49 _(SR_STEERING_ADD_DEL, sr_steering_add_del)             \
50 _(SR_SET_ENCAP_SOURCE, sr_set_encap_source)             \
51 _(SR_LOCALSIDS_DUMP, sr_localsids_dump)
52 //_(SR_LOCALSID_BEHAVIORS, sr_localsid_behaviors_dump)
53
54 static void vl_api_sr_localsid_add_del_t_handler
55   (vl_api_sr_localsid_add_del_t * mp)
56 {
57   vl_api_sr_localsid_add_del_reply_t *rmp;
58   int rv = 0;
59 /*
60  * int sr_cli_localsid (char is_del, ip6_address_t *localsid_addr,
61  *  char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table,
62  *  ip46_address_t *nh_addr, void *ls_plugin_mem)
63  */
64
65   VALIDATE_SW_IF_INDEX (mp);
66
67   rv = sr_cli_localsid (mp->is_del,
68                         (ip6_address_t *) & mp->localsid_addr,
69                         mp->end_psp,
70                         mp->behavior,
71                         ntohl (mp->sw_if_index),
72                         ntohl (mp->vlan_index),
73                         ntohl (mp->fib_table),
74                         (ip46_address_t *) & mp->nh_addr, NULL);
75
76   BAD_SW_IF_INDEX_LABEL;
77
78   REPLY_MACRO (VL_API_SR_LOCALSID_ADD_DEL_REPLY);
79 }
80
81 static void
82 vl_api_sr_policy_add_t_handler (vl_api_sr_policy_add_t * mp)
83 {
84   vl_api_sr_policy_add_reply_t *rmp;
85   ip6_address_t *segments = 0, *seg;
86   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
87
88   int i;
89   for (i = 0; i < mp->n_segments; i++)
90     {
91       vec_add2 (segments, seg, 1);
92       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
93       this_address++;
94     }
95
96 /*
97  * sr_policy_add (ip6_address_t *bsid, ip6_address_t *segments,
98  *                u32 weight, u8 behavior, u32 fib_table, u8 is_encap)
99  */
100   int rv = 0;
101   rv = sr_policy_add ((ip6_address_t *) & mp->bsid_addr,
102                       segments,
103                       ntohl (mp->weight),
104                       mp->type, ntohl (mp->fib_table), mp->is_encap);
105
106   REPLY_MACRO (VL_API_SR_POLICY_ADD_REPLY);
107 }
108
109 static void
110 vl_api_sr_policy_mod_t_handler (vl_api_sr_policy_mod_t * mp)
111 {
112   vl_api_sr_policy_mod_reply_t *rmp;
113
114   ip6_address_t *segments = 0, *seg;
115   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
116
117   int i;
118   for (i = 0; i < mp->n_segments; i++)
119     {
120       vec_add2 (segments, seg, 1);
121       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
122       this_address++;
123     }
124
125   int rv = 0;
126 /*
127  * int
128  * sr_policy_mod(ip6_address_t *bsid, u32 index, u32 fib_table,
129  *               u8 operation, ip6_address_t *segments, u32 sl_index,
130  *               u32 weight, u8 is_encap)
131  */
132   rv = sr_policy_mod ((ip6_address_t *) & mp->bsid_addr,
133                       ntohl (mp->sr_policy_index),
134                       ntohl (mp->fib_table),
135                       mp->operation,
136                       segments, ntohl (mp->sl_index), ntohl (mp->weight));
137
138   REPLY_MACRO (VL_API_SR_POLICY_MOD_REPLY);
139 }
140
141 static void
142 vl_api_sr_policy_del_t_handler (vl_api_sr_policy_del_t * mp)
143 {
144   vl_api_sr_policy_del_reply_t *rmp;
145   int rv = 0;
146 /*
147  * int
148  * sr_policy_del (ip6_address_t *bsid, u32 index)
149  */
150   rv = sr_policy_del ((ip6_address_t *) & mp->bsid_addr,
151                       ntohl (mp->sr_policy_index));
152
153   REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY);
154 }
155
156 static void
157 vl_api_sr_set_encap_source_t_handler (vl_api_sr_set_encap_source_t * mp)
158 {
159   vl_api_sr_set_encap_source_reply_t *rmp;
160   int rv = 0;
161   sr_set_source ((ip6_address_t *) & mp->encaps_source);
162
163   REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY);
164 }
165
166 static void vl_api_sr_steering_add_del_t_handler
167   (vl_api_sr_steering_add_del_t * mp)
168 {
169   vl_api_sr_steering_add_del_reply_t *rmp;
170   int rv = 0;
171 /*
172  * int
173  * sr_steering_policy(int is_del, ip6_address_t *bsid, u32 sr_policy_index,
174  *  u32 table_id, ip46_address_t *prefix, u32 mask_width, u32 sw_if_index,
175  *  u8 traffic_type)
176  */
177
178   VALIDATE_SW_IF_INDEX (mp);
179
180   rv = sr_steering_policy (mp->is_del,
181                            (ip6_address_t *) & mp->bsid_addr,
182                            ntohl (mp->sr_policy_index),
183                            ntohl (mp->table_id),
184                            (ip46_address_t *) & mp->prefix_addr,
185                            ntohl (mp->mask_width),
186                            ntohl (mp->sw_if_index), mp->traffic_type);
187
188   BAD_SW_IF_INDEX_LABEL;
189
190   REPLY_MACRO (VL_API_SR_STEERING_ADD_DEL_REPLY);
191 }
192
193 static void send_sr_localsid_details
194   (ip6_sr_localsid_t * t, unix_shared_memory_queue_t * q, u32 context)
195 {
196   vl_api_sr_localsids_details_t *rmp;
197
198   rmp = vl_msg_api_alloc (sizeof (*rmp));
199   memset (rmp, 0, sizeof (*rmp));
200   rmp->_vl_msg_id = ntohs (VL_API_SR_LOCALSIDS_DETAILS);
201   memcpy (rmp->address, &t->localsid, sizeof (ip6_address_t));
202   rmp->end_psp = t->end_psp;
203   rmp->behavior = htons (t->behavior);
204   rmp->fib_table = htonl (t->fib_table);
205   memcpy (rmp->xconnect_next_hop, &t->next_hop, sizeof (ip6_address_t));
206   rmp->xconnect_iface_or_vrf_table = htonl (t->sw_if_index);
207   rmp->context = context;
208
209   vl_msg_api_send_shmem (q, (u8 *) & rmp);
210 }
211
212 static void vl_api_sr_localsids_dump_t_handler
213   (vl_api_sr_localsids_dump_t * mp)
214 {
215   unix_shared_memory_queue_t *q;
216   ip6_sr_main_t *sm = &sr_main;
217   ip6_sr_localsid_t *t;
218
219   q = vl_api_client_index_to_input_queue (mp->client_index);
220   if (q == 0)
221     {
222       return;
223     }
224
225   /* *INDENT-OFF* */
226   pool_foreach (t, sm->localsids,
227   ({
228     send_sr_localsid_details(t, q, mp->context);
229   }));
230   /* *INDENT-ON* */
231 }
232
233
234 /*
235  * sr_api_hookup
236  * Add vpe's API message handlers to the table.
237  * vlib has alread mapped shared memory and
238  * added the client registration handlers.
239  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
240  */
241 #define vl_msg_name_crc_list
242 #include <vnet/vnet_all_api_h.h>
243 #undef vl_msg_name_crc_list
244
245 static void
246 setup_message_id_table (api_main_t * am)
247 {
248 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
249   foreach_vl_msg_name_crc_sr;
250 #undef _
251 }
252
253 static clib_error_t *
254 sr_api_hookup (vlib_main_t * vm)
255 {
256   api_main_t *am = &api_main;
257
258 #define _(N,n)                                                  \
259     vl_msg_api_set_handlers(VL_API_##N, #n,                     \
260                            vl_api_##n##_t_handler,              \
261                            vl_noop_handler,                     \
262                            vl_api_##n##_t_endian,               \
263                            vl_api_##n##_t_print,                \
264                            sizeof(vl_api_##n##_t), 1);
265   foreach_vpe_api_msg;
266 #undef _
267
268   /*
269    * Manually register the sr policy add msg, so we trace
270    * enough bytes to capture a typical segment list
271    */
272   vl_msg_api_set_handlers (VL_API_SR_POLICY_ADD,
273                            "sr_policy_add",
274                            vl_api_sr_policy_add_t_handler,
275                            vl_noop_handler,
276                            vl_api_sr_policy_add_t_endian,
277                            vl_api_sr_policy_add_t_print, 256, 1);
278
279   /*
280    * Manually register the sr policy mod msg, so we trace
281    * enough bytes to capture a typical segment list
282    */
283   vl_msg_api_set_handlers (VL_API_SR_POLICY_MOD,
284                            "sr_policy_mod",
285                            vl_api_sr_policy_mod_t_handler,
286                            vl_noop_handler,
287                            vl_api_sr_policy_mod_t_endian,
288                            vl_api_sr_policy_mod_t_print, 256, 1);
289
290   /*
291    * Set up the (msg_name, crc, message-id) table
292    */
293   setup_message_id_table (am);
294
295   return 0;
296 }
297
298 VLIB_API_INIT_FUNCTION (sr_api_hookup);
299
300 /*
301  * fd.io coding-style-patch-verification: ON
302  *
303  * Local Variables:
304  * eval: (c-set-style "gnu")
305  * End:
306  */