2 * decap.c : IPSec tunnel support
4 * Copyright (c) 2015 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/ip/ip.h>
21 #include <vnet/interface.h>
22 #include <vnet/fib/fib_table.h>
24 #include <vnet/ipsec/ipsec.h>
27 format_ipsec_policy_action (u8 * s, va_list * args)
29 u32 i = va_arg (*args, u32);
34 #define _(v,f,str) case IPSEC_POLICY_ACTION_##f: t = str; break;
35 foreach_ipsec_policy_action
38 s = format (s, "unknown");
40 s = format (s, "%s", t);
45 format_ipsec_policy_type (u8 * s, va_list * args)
47 u32 i = va_arg (*args, u32);
52 #define _(f,str) case IPSEC_SPD_POLICY_##f: t = str; break;
53 foreach_ipsec_spd_policy_type
56 s = format (s, "unknown");
58 s = format (s, "%s", t);
63 unformat_ipsec_policy_action (unformat_input_t * input, va_list * args)
65 u32 *r = va_arg (*args, u32 *);
68 #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_POLICY_ACTION_##f;
69 foreach_ipsec_policy_action
77 format_ipsec_crypto_alg (u8 * s, va_list * args)
79 u32 i = va_arg (*args, u32);
84 #define _(v,f,str) case IPSEC_CRYPTO_ALG_##f: t = (u8 *) str; break;
85 foreach_ipsec_crypto_alg
88 s = format (s, "unknown");
90 s = format (s, "%s", t);
95 unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args)
97 u32 *r = va_arg (*args, u32 *);
100 #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_CRYPTO_ALG_##f;
101 foreach_ipsec_crypto_alg
109 format_ipsec_integ_alg (u8 * s, va_list * args)
111 u32 i = va_arg (*args, u32);
116 #define _(v,f,str) case IPSEC_INTEG_ALG_##f: t = (u8 *) str; break;
117 foreach_ipsec_integ_alg
120 s = format (s, "unknown");
122 s = format (s, "%s", t);
127 unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args)
129 u32 *r = va_arg (*args, u32 *);
132 #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_INTEG_ALG_##f;
133 foreach_ipsec_integ_alg
141 format_ipsec_replay_window (u8 * s, va_list * args)
143 u64 w = va_arg (*args, u64);
146 for (i = 0; i < 64; i++)
148 s = format (s, "%u", w & (1ULL << i) ? 1 : 0);
155 format_ipsec_policy (u8 * s, va_list * args)
157 u32 pi = va_arg (*args, u32);
158 ipsec_main_t *im = &ipsec_main;
160 vlib_counter_t counts;
162 p = pool_elt_at_index (im->policies, pi);
164 s = format (s, " [%d] priority %d action %U type %U protocol ",
166 format_ipsec_policy_action, p->policy,
167 format_ipsec_policy_type, p->type);
170 s = format (s, "%U", format_ip_protocol, p->protocol);
174 s = format (s, "any");
176 if (p->policy == IPSEC_POLICY_ACTION_PROTECT)
178 s = format (s, " sa %u", p->sa_id);
181 s = format (s, "\n local addr range %U - %U port range %u - %u",
182 format_ip46_address, &p->laddr.start, IP46_TYPE_ANY,
183 format_ip46_address, &p->laddr.stop, IP46_TYPE_ANY,
184 clib_net_to_host_u16 (p->lport.start),
185 clib_net_to_host_u16 (p->lport.stop));
186 s = format (s, "\n remote addr range %U - %U port range %u - %u",
187 format_ip46_address, &p->raddr.start, IP46_TYPE_ANY,
188 format_ip46_address, &p->raddr.stop, IP46_TYPE_ANY,
189 clib_net_to_host_u16 (p->rport.start),
190 clib_net_to_host_u16 (p->rport.stop));
192 vlib_get_combined_counter (&ipsec_spd_policy_counters, pi, &counts);
193 s = format (s, "\n packets %u bytes %u", counts.packets, counts.bytes);
199 format_ipsec_spd (u8 * s, va_list * args)
201 u32 si = va_arg (*args, u32);
202 ipsec_main_t *im = &ipsec_main;
206 spd = pool_elt_at_index (im->spds, si);
208 s = format (s, "spd %u", spd->id);
211 s = format (s, "\n %s:", n); \
212 vec_foreach(i, spd->policies[IPSEC_SPD_POLICY_##v]) \
214 s = format (s, "\n %U", format_ipsec_policy, *i); \
216 foreach_ipsec_spd_policy_type;
223 format_ipsec_key (u8 * s, va_list * args)
225 ipsec_key_t *key = va_arg (*args, ipsec_key_t *);
227 return (format (s, "%U", format_hex_bytes, key->data, key->len));
231 unformat_ipsec_key (unformat_input_t * input, va_list * args)
233 ipsec_key_t *key = va_arg (*args, ipsec_key_t *);
236 if (unformat (input, "%U", unformat_hex_string, &data))
238 ipsec_mk_key (key, data, vec_len (data));
247 format_ipsec_sa (u8 * s, va_list * args)
249 u32 sai = va_arg (*args, u32);
250 ipsec_main_t *im = &ipsec_main;
251 vlib_counter_t counts;
255 sa = pool_elt_at_index (im->sad, sai);
257 s = format (s, "[%d] sa 0x%x spi %u mode %s%s protocol %s%s%s%s",
258 sai, sa->id, sa->spi,
259 sa->is_tunnel ? "tunnel" : "transport",
260 sa->is_tunnel_ip6 ? "-ip6" : "",
261 sa->protocol ? "esp" : "ah",
262 sa->udp_encap ? " udp-encap-enabled" : "",
263 sa->use_anti_replay ? " anti-replay" : "",
264 sa->use_esn ? " extended-sequence-number" : "");
265 s = format (s, "\n seq %u seq-hi %u", sa->seq, sa->seq_hi);
266 s = format (s, "\n last-seq %u last-seq-hi %u window %U",
267 sa->last_seq, sa->last_seq_hi,
268 format_ipsec_replay_window, sa->replay_window);
269 s = format (s, "\n crypto alg %U%s%U",
270 format_ipsec_crypto_alg, sa->crypto_alg,
271 sa->crypto_alg ? " key " : "",
272 format_ipsec_key, &sa->crypto_key);
273 s = format (s, "\n integrity alg %U%s%U",
274 format_ipsec_integ_alg, sa->integ_alg,
275 sa->integ_alg ? " key " : "", format_ipsec_key, &sa->integ_key);
276 vlib_get_combined_counter (&ipsec_sa_counters, sai, &counts);
277 s = format (s, "\n packets %u bytes %u", counts.packets, counts.bytes);
281 tx_table_id = fib_table_get_table_id (sa->tx_fib_index,
283 s = format (s, "\n table-ID %d tunnel src %U dst %U",
285 format_ip46_address, &sa->tunnel_src_addr, IP46_TYPE_ANY,
286 format_ip46_address, &sa->tunnel_dst_addr, IP46_TYPE_ANY);
287 s = format (s, "\n resovle via fib-entry: %d", sa->fib_entry_index);
288 s = format (s, "\n stacked on:");
290 format (s, "\n %U", format_dpo_id, &sa->dpo[IPSEC_PROTOCOL_ESP],
298 * fd.io coding-style-patch-verification: ON
301 * eval: (c-set-style "gnu")