crypto: make crypto-dispatch node working in adaptive mode
[vpp.git] / src / vnet / ipsec / ipsec_spd.c
1 /*
2  * Copyright (c) 2015 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:
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15
16 #include <vnet/ipsec/ipsec.h>
17 #include <vnet/ipsec/ipsec_io.h>
18
19 int
20 ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add)
21 {
22   ipsec_main_t *im = &ipsec_main;
23   ipsec_spd_t *spd = 0;
24   ipsec_spd_fp_t *fp_spd = 0;
25   uword *p;
26   u32 spd_index, k, v;
27
28   p = hash_get (im->spd_index_by_spd_id, spd_id);
29   if (p && is_add)
30     return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
31   if (!p && !is_add)
32     return VNET_API_ERROR_NO_SUCH_ENTRY;
33
34   if (!is_add)                  /* delete */
35     {
36       spd_index = p[0];
37       spd = pool_elt_at_index (im->spds, spd_index);
38       if (!spd)
39         return VNET_API_ERROR_INVALID_VALUE;
40
41       /* *INDENT-OFF* */
42       hash_foreach (k, v, im->spd_index_by_sw_if_index, ({
43         if (v == spd_index)
44           ipsec_set_interface_spd(vm, k, spd_id, 0);
45       }));
46       /* *INDENT-ON* */
47       hash_unset (im->spd_index_by_spd_id, spd_id);
48 #define _(s,v) vec_free(spd->policies[IPSEC_SPD_POLICY_##s]);
49       foreach_ipsec_spd_policy_type
50 #undef _
51
52         fp_spd = &spd->fp_spd;
53
54       if (im->fp_spd_ipv4_out_is_enabled)
55         {
56           if (fp_spd->ip4_out_lookup_hash_idx != INDEX_INVALID)
57             {
58               clib_bihash_16_8_t *bihash_table =
59                 pool_elt_at_index (im->fp_ip4_lookup_hashes_pool,
60                                    fp_spd->ip4_out_lookup_hash_idx);
61
62               clib_bihash_free_16_8 (bihash_table);
63               vec_free (fp_spd->name4_out);
64               pool_put_index (im->fp_ip4_lookup_hashes_pool,
65                               fp_spd->ip4_out_lookup_hash_idx);
66             }
67         }
68
69       if (im->fp_spd_ipv4_in_is_enabled)
70         {
71           if (fp_spd->ip4_in_lookup_hash_idx != INDEX_INVALID)
72             {
73               clib_bihash_16_8_t *bihash_table = pool_elt_at_index (
74                 im->fp_ip4_lookup_hashes_pool, fp_spd->ip4_in_lookup_hash_idx);
75
76               clib_bihash_free_16_8 (bihash_table);
77               vec_free (fp_spd->name4_in);
78               pool_put_index (im->fp_ip4_lookup_hashes_pool,
79                               fp_spd->ip4_in_lookup_hash_idx);
80             }
81         }
82
83       if (im->fp_spd_ipv6_out_is_enabled)
84         {
85           if (fp_spd->ip6_out_lookup_hash_idx != INDEX_INVALID)
86             {
87               clib_bihash_40_8_t *bihash_table =
88                 pool_elt_at_index (im->fp_ip6_lookup_hashes_pool,
89                                    fp_spd->ip6_out_lookup_hash_idx);
90
91               clib_bihash_free_40_8 (bihash_table);
92               vec_free (fp_spd->name6_out);
93               pool_put_index (im->fp_ip6_lookup_hashes_pool,
94                               fp_spd->ip6_out_lookup_hash_idx);
95             }
96         }
97       if (im->fp_spd_ipv6_in_is_enabled)
98         {
99           if (fp_spd->ip6_in_lookup_hash_idx != INDEX_INVALID)
100             {
101               clib_bihash_40_8_t *bihash_table = pool_elt_at_index (
102                 im->fp_ip6_lookup_hashes_pool, fp_spd->ip6_in_lookup_hash_idx);
103
104               clib_bihash_free_40_8 (bihash_table);
105               vec_free (fp_spd->name6_in);
106               pool_put_index (im->fp_ip6_lookup_hashes_pool,
107                               fp_spd->ip6_in_lookup_hash_idx);
108             }
109         }
110
111       pool_put (im->spds, spd);
112     }
113   else /* create new SPD */
114     {
115       pool_get (im->spds, spd);
116       clib_memset (spd, 0, sizeof (*spd));
117       spd_index = spd - im->spds;
118       spd->id = spd_id;
119       hash_set (im->spd_index_by_spd_id, spd_id, spd_index);
120
121       fp_spd = &spd->fp_spd;
122       fp_spd->ip4_out_lookup_hash_idx = INDEX_INVALID;
123       fp_spd->ip4_in_lookup_hash_idx = INDEX_INVALID;
124       fp_spd->ip6_out_lookup_hash_idx = INDEX_INVALID;
125       fp_spd->ip6_in_lookup_hash_idx = INDEX_INVALID;
126
127       if (im->fp_spd_ipv4_out_is_enabled)
128         {
129           if (pool_elts (im->fp_ip4_lookup_hashes_pool) <
130               pool_max_len (im->fp_ip4_lookup_hashes_pool))
131             {
132               clib_bihash_16_8_t *bihash_table;
133               fp_spd->name4_out = format (0, "spd_%u_fp_ip4_out", spd_id);
134
135               pool_get (im->fp_ip4_lookup_hashes_pool, bihash_table);
136               fp_spd->ip4_out_lookup_hash_idx =
137                 bihash_table - im->fp_ip4_lookup_hashes_pool;
138               clib_bihash_init_16_8 (bihash_table, (char *) fp_spd->name4_out,
139                                      im->fp_lookup_hash_buckets,
140                                      im->fp_lookup_hash_buckets *
141                                        IPSEC_FP_IP4_HASH_MEM_PER_BUCKET);
142             }
143         }
144
145       if (im->fp_spd_ipv4_in_is_enabled)
146         {
147           if (pool_elts (im->fp_ip4_lookup_hashes_pool) <
148               pool_max_len (im->fp_ip4_lookup_hashes_pool))
149             {
150               clib_bihash_16_8_t *bihash_table;
151               fp_spd->name4_in = format (0, "spd_%u_fp_ip4_in", spd_id);
152
153               pool_get (im->fp_ip4_lookup_hashes_pool, bihash_table);
154               fp_spd->ip4_in_lookup_hash_idx =
155                 bihash_table - im->fp_ip4_lookup_hashes_pool;
156               clib_bihash_init_16_8 (bihash_table, (char *) fp_spd->name4_in,
157                                      im->fp_lookup_hash_buckets,
158                                      im->fp_lookup_hash_buckets *
159                                        IPSEC_FP_IP4_HASH_MEM_PER_BUCKET);
160             }
161         }
162       if (im->fp_spd_ipv6_out_is_enabled)
163         {
164           if (pool_elts (im->fp_ip6_lookup_hashes_pool) <
165               pool_max_len (im->fp_ip6_lookup_hashes_pool))
166             {
167               clib_bihash_40_8_t *bihash_table;
168               ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
169
170               fp_spd->name6_out = format (0, "spd_%u_fp_ip6_out", spd_id);
171
172               fp_spd->name6_out = format (0, "spd_%u_fp_ip6_out", spd_id);
173               pool_get (im->fp_ip6_lookup_hashes_pool, bihash_table);
174               fp_spd->ip6_out_lookup_hash_idx =
175                 bihash_table - im->fp_ip6_lookup_hashes_pool;
176               clib_bihash_init_40_8 (bihash_table, (char *) fp_spd->name6_out,
177                                      im->fp_lookup_hash_buckets,
178                                      im->fp_lookup_hash_buckets *
179                                        IPSEC_FP_IP6_HASH_MEM_PER_BUCKET);
180             }
181         }
182       if (im->fp_spd_ipv6_in_is_enabled)
183         {
184           if (pool_elts (im->fp_ip6_lookup_hashes_pool) <
185               pool_max_len (im->fp_ip6_lookup_hashes_pool))
186             {
187               clib_bihash_40_8_t *bihash_table;
188               ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
189
190               fp_spd->name6_in = format (0, "spd_%u_fp_ip6_in", spd_id);
191               pool_get (im->fp_ip6_lookup_hashes_pool, bihash_table);
192               fp_spd->ip6_in_lookup_hash_idx =
193                 bihash_table - im->fp_ip6_lookup_hashes_pool;
194               clib_bihash_init_40_8 (bihash_table, (char *) fp_spd->name6_in,
195                                      im->fp_lookup_hash_buckets,
196                                      im->fp_lookup_hash_buckets *
197                                        IPSEC_FP_IP6_HASH_MEM_PER_BUCKET);
198             }
199         }
200     }
201   return 0;
202 }
203
204 int
205 ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
206                          int is_add)
207 {
208   ipsec_main_t *im = &ipsec_main;
209   ip4_ipsec_config_t config;
210
211   u32 spd_index;
212   uword *p;
213
214   p = hash_get (im->spd_index_by_spd_id, spd_id);
215   if (!p)
216     return VNET_API_ERROR_SYSCALL_ERROR_1;      /* no such spd-id */
217
218   spd_index = p[0];
219
220   p = hash_get (im->spd_index_by_sw_if_index, sw_if_index);
221   if (p && is_add)
222     return VNET_API_ERROR_SYSCALL_ERROR_2;      /* spd already assigned */
223
224   if (is_add)
225     {
226       hash_set (im->spd_index_by_sw_if_index, sw_if_index, spd_index);
227     }
228   else
229     {
230       hash_unset (im->spd_index_by_sw_if_index, sw_if_index);
231     }
232
233   /* enable IPsec on TX */
234   vnet_feature_enable_disable ("ip4-output", "ipsec4-output-feature",
235                                sw_if_index, is_add, 0, 0);
236   vnet_feature_enable_disable ("ip6-output", "ipsec6-output-feature",
237                                sw_if_index, is_add, 0, 0);
238
239   config.spd_index = spd_index;
240
241   /* enable IPsec on RX */
242   vnet_feature_enable_disable ("ip4-unicast", "ipsec4-input-feature",
243                                sw_if_index, is_add, &config, sizeof (config));
244   vnet_feature_enable_disable ("ip6-unicast", "ipsec6-input-feature",
245                                sw_if_index, is_add, &config, sizeof (config));
246
247   return 0;
248 }
249
250 /*
251  * fd.io coding-style-patch-verification: ON
252  *
253  * Local Variables:
254  * eval: (c-set-style "gnu")
255  * End:
256  */