| /* |
| * decap.c : IPSec tunnel support |
| * |
| * Copyright (c) 2015 Cisco and/or its affiliates. |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vnet/vnet.h> |
| #include <vnet/api_errno.h> |
| #include <vnet/ip/ip.h> |
| #include <vnet/interface.h> |
| #include <vnet/fib/fib_table.h> |
| |
| #include <vnet/ipsec/ipsec.h> |
| |
| u8 * |
| format_ipsec_policy_action (u8 * s, va_list * args) |
| { |
| u32 i = va_arg (*args, u32); |
| char *t = 0; |
| |
| switch (i) |
| { |
| #define _(v,f,str) case IPSEC_POLICY_ACTION_##f: t = str; break; |
| foreach_ipsec_policy_action |
| #undef _ |
| default: |
| s = format (s, "unknown"); |
| } |
| s = format (s, "%s", t); |
| return s; |
| } |
| |
| u8 * |
| format_ipsec_policy_type (u8 * s, va_list * args) |
| { |
| u32 i = va_arg (*args, u32); |
| char *t = 0; |
| |
| switch (i) |
| { |
| #define _(f,str) case IPSEC_SPD_POLICY_##f: t = str; break; |
| foreach_ipsec_spd_policy_type |
| #undef _ |
| default: |
| s = format (s, "unknown"); |
| } |
| s = format (s, "%s", t); |
| return s; |
| } |
| |
| uword |
| unformat_ipsec_policy_action (unformat_input_t * input, va_list * args) |
| { |
| u32 *r = va_arg (*args, u32 *); |
| |
| if (0); |
| #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_POLICY_ACTION_##f; |
| foreach_ipsec_policy_action |
| #undef _ |
| else |
| return 0; |
| return 1; |
| } |
| |
| u8 * |
| format_ipsec_crypto_alg (u8 * s, va_list * args) |
| { |
| u32 i = va_arg (*args, u32); |
| u8 *t = 0; |
| |
| switch (i) |
| { |
| #define _(v,f,str) case IPSEC_CRYPTO_ALG_##f: t = (u8 *) str; break; |
| foreach_ipsec_crypto_alg |
| #undef _ |
| default: |
| s = format (s, "unknown"); |
| } |
| s = format (s, "%s", t); |
| return s; |
| } |
| |
| uword |
| unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args) |
| { |
| u32 *r = va_arg (*args, u32 *); |
| |
| if (0); |
| #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_CRYPTO_ALG_##f; |
| foreach_ipsec_crypto_alg |
| #undef _ |
| else |
| return 0; |
| return 1; |
| } |
| |
| u8 * |
| format_ipsec_integ_alg (u8 * s, va_list * args) |
| { |
| u32 i = va_arg (*args, u32); |
| u8 *t = 0; |
| |
| switch (i) |
| { |
| #define _(v,f,str) case IPSEC_INTEG_ALG_##f: t = (u8 *) str; break; |
| foreach_ipsec_integ_alg |
| #undef _ |
| default: |
| s = format (s, "unknown"); |
| } |
| s = format (s, "%s", t); |
| return s; |
| } |
| |
| uword |
| unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args) |
| { |
| u32 *r = va_arg (*args, u32 *); |
| |
| if (0); |
| #define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_INTEG_ALG_##f; |
| foreach_ipsec_integ_alg |
| #undef _ |
| else |
| return 0; |
| return 1; |
| } |
| |
| u8 * |
| format_ipsec_replay_window (u8 * s, va_list * args) |
| { |
| u64 w = va_arg (*args, u64); |
| u8 i; |
| |
| for (i = 0; i < 64; i++) |
| { |
| s = format (s, "%u", w & (1ULL << i) ? 1 : 0); |
| } |
| |
| return s; |
| } |
| |
| u8 * |
| format_ipsec_policy (u8 * s, va_list * args) |
| { |
| u32 pi = va_arg (*args, u32); |
| ipsec_main_t *im = &ipsec_main; |
| ipsec_policy_t *p; |
| vlib_counter_t counts; |
| |
| p = pool_elt_at_index (im->policies, pi); |
| |
| s = format (s, " [%d] priority %d action %U type %U protocol ", |
| pi, p->priority, |
| format_ipsec_policy_action, p->policy, |
| format_ipsec_policy_type, p->type); |
| if (p->protocol) |
| { |
| s = format (s, "%U", format_ip_protocol, p->protocol); |
| } |
| else |
| { |
| s = format (s, "any"); |
| } |
| if (p->policy == IPSEC_POLICY_ACTION_PROTECT) |
| { |
| s = format (s, " sa %u", p->sa_id); |
| } |
| |
| s = format (s, "\n local addr range %U - %U port range %u - %u", |
| format_ip46_address, &p->laddr.start, IP46_TYPE_ANY, |
| format_ip46_address, &p->laddr.stop, IP46_TYPE_ANY, |
| clib_net_to_host_u16 (p->lport.start), |
| clib_net_to_host_u16 (p->lport.stop)); |
| s = format (s, "\n remote addr range %U - %U port range %u - %u", |
| format_ip46_address, &p->raddr.start, IP46_TYPE_ANY, |
| format_ip46_address, &p->raddr.stop, IP46_TYPE_ANY, |
| clib_net_to_host_u16 (p->rport.start), |
| clib_net_to_host_u16 (p->rport.stop)); |
| |
| vlib_get_combined_counter (&ipsec_spd_policy_counters, pi, &counts); |
| s = format (s, "\n packets %u bytes %u", counts.packets, counts.bytes); |
| |
| return (s); |
| } |
| |
| u8 * |
| format_ipsec_spd (u8 * s, va_list * args) |
| { |
| u32 si = va_arg (*args, u32); |
| ipsec_main_t *im = &ipsec_main; |
| ipsec_spd_t *spd; |
| u32 *i; |
| |
| spd = pool_elt_at_index (im->spds, si); |
| |
| s = format (s, "spd %u", spd->id); |
| |
| #define _(v, n) \ |
| s = format (s, "\n %s:", n); \ |
| vec_foreach(i, spd->policies[IPSEC_SPD_POLICY_##v]) \ |
| { \ |
| s = format (s, "\n %U", format_ipsec_policy, *i); \ |
| } |
| foreach_ipsec_spd_policy_type; |
| #undef _ |
| |
| return (s); |
| } |
| |
| u8 * |
| format_ipsec_key (u8 * s, va_list * args) |
| { |
| ipsec_key_t *key = va_arg (*args, ipsec_key_t *); |
| |
| return (format (s, "%U", format_hex_bytes, key->data, key->len)); |
| } |
| |
| uword |
| unformat_ipsec_key (unformat_input_t * input, va_list * args) |
| { |
| ipsec_key_t *key = va_arg (*args, ipsec_key_t *); |
| u8 *data; |
| |
| if (unformat (input, "%U", unformat_hex_string, &data)) |
| { |
| ipsec_mk_key (key, data, vec_len (data)); |
| vec_free (data); |
| } |
| else |
| return 0; |
| return 1; |
| } |
| |
| u8 * |
| format_ipsec_sa (u8 * s, va_list * args) |
| { |
| u32 sai = va_arg (*args, u32); |
| ipsec_main_t *im = &ipsec_main; |
| vlib_counter_t counts; |
| u32 tx_table_id; |
| ipsec_sa_t *sa; |
| |
| sa = pool_elt_at_index (im->sad, sai); |
| |
| s = format (s, "[%d] sa 0x%x spi %u mode %s%s protocol %s%s%s%s", |
| sai, sa->id, sa->spi, |
| ipsec_sa_is_set_IS_TUNNEL (sa) ? "tunnel" : "transport", |
| ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? "-ip6" : "", |
| sa->protocol ? "esp" : "ah", |
| ipsec_sa_is_set_UDP_ENCAP (sa) ? " udp-encap-enabled" : "", |
| ipsec_sa_is_set_USE_ANTI_REPLAY (sa) ? " anti-replay" : "", |
| ipsec_sa_is_set_USE_EXTENDED_SEQ_NUM (sa) ? |
| " extended-sequence-number" : ""); |
| s = format (s, "\n seq %u seq-hi %u", sa->seq, sa->seq_hi); |
| s = format (s, "\n last-seq %u last-seq-hi %u window %U", |
| sa->last_seq, sa->last_seq_hi, |
| format_ipsec_replay_window, sa->replay_window); |
| s = format (s, "\n crypto alg %U%s%U", |
| format_ipsec_crypto_alg, sa->crypto_alg, |
| sa->crypto_alg ? " key " : "", |
| format_ipsec_key, &sa->crypto_key); |
| s = format (s, "\n integrity alg %U%s%U", |
| format_ipsec_integ_alg, sa->integ_alg, |
| sa->integ_alg ? " key " : "", format_ipsec_key, &sa->integ_key); |
| vlib_get_combined_counter (&ipsec_sa_counters, sai, &counts); |
| s = format (s, "\n packets %u bytes %u", counts.packets, counts.bytes); |
| |
| if (ipsec_sa_is_set_IS_TUNNEL (sa)) |
| { |
| tx_table_id = fib_table_get_table_id (sa->tx_fib_index, |
| FIB_PROTOCOL_IP4); |
| s = format (s, "\n table-ID %d tunnel src %U dst %U", |
| tx_table_id, |
| format_ip46_address, &sa->tunnel_src_addr, IP46_TYPE_ANY, |
| format_ip46_address, &sa->tunnel_dst_addr, IP46_TYPE_ANY); |
| s = format (s, "\n resovle via fib-entry: %d", sa->fib_entry_index); |
| s = format (s, "\n stacked on:"); |
| s = |
| format (s, "\n %U", format_dpo_id, &sa->dpo[IPSEC_PROTOCOL_ESP], |
| 6); |
| } |
| |
| return (s); |
| } |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |