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/*
* 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:
*/
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