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/*
* 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/ipsec/ipsec.h>
#include <vnet/ipsec/ipsec_io.h>
int
ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add)
{
ipsec_main_t *im = &ipsec_main;
ipsec_spd_t *spd = 0;
uword *p;
u32 spd_index, k, v;
p = hash_get (im->spd_index_by_spd_id, spd_id);
if (p && is_add)
return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
if (!p && !is_add)
return VNET_API_ERROR_NO_SUCH_ENTRY;
if (!is_add) /* delete */
{
spd_index = p[0];
spd = pool_elt_at_index (im->spds, spd_index);
if (!spd)
return VNET_API_ERROR_INVALID_VALUE;
/* *INDENT-OFF* */
hash_foreach (k, v, im->spd_index_by_sw_if_index, ({
if (v == spd_index)
ipsec_set_interface_spd(vm, k, spd_id, 0);
}));
/* *INDENT-ON* */
hash_unset (im->spd_index_by_spd_id, spd_id);
#define _(s,v) vec_free(spd->policies[IPSEC_SPD_POLICY_##s]);
foreach_ipsec_spd_policy_type
#undef _
if (im->ipv4_fp_spd_is_enabled)
{
ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
clib_bihash_free_16_8 (&fp_spd->fp_ip4_lookup_hash);
}
if (im->ipv6_fp_spd_is_enabled)
{
ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
clib_bihash_free_40_8 (&fp_spd->fp_ip6_lookup_hash);
}
pool_put (im->spds, spd);
}
else /* create new SPD */
{
pool_get (im->spds, spd);
clib_memset (spd, 0, sizeof (*spd));
spd_index = spd - im->spds;
spd->id = spd_id;
hash_set (im->spd_index_by_spd_id, spd_id, spd_index);
if (im->ipv4_fp_spd_is_enabled)
{
ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
clib_bihash_init_16_8 (
&fp_spd->fp_ip4_lookup_hash, "SPD_FP ip4 rules lookup bihash",
im->fp_lookup_hash_buckets,
im->fp_lookup_hash_buckets * IPSEC_FP_IP4_HASH_MEM_PER_BUCKET);
}
if (im->ipv6_fp_spd_is_enabled)
{
ipsec_spd_fp_t *fp_spd = &spd->fp_spd;
clib_bihash_init_40_8 (
&fp_spd->fp_ip6_lookup_hash, "SPD_FP ip6 rules lookup bihash",
im->fp_lookup_hash_buckets,
im->fp_lookup_hash_buckets * IPSEC_FP_IP6_HASH_MEM_PER_BUCKET);
fp_spd->fp_ip6_lookup_hash_initialized = 1;
}
}
return 0;
}
int
ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id,
int is_add)
{
ipsec_main_t *im = &ipsec_main;
ip4_ipsec_config_t config;
u32 spd_index;
uword *p;
p = hash_get (im->spd_index_by_spd_id, spd_id);
if (!p)
return VNET_API_ERROR_SYSCALL_ERROR_1; /* no such spd-id */
spd_index = p[0];
p = hash_get (im->spd_index_by_sw_if_index, sw_if_index);
if (p && is_add)
return VNET_API_ERROR_SYSCALL_ERROR_2; /* spd already assigned */
if (is_add)
{
hash_set (im->spd_index_by_sw_if_index, sw_if_index, spd_index);
}
else
{
hash_unset (im->spd_index_by_sw_if_index, sw_if_index);
}
/* enable IPsec on TX */
vnet_feature_enable_disable ("ip4-output", "ipsec4-output-feature",
sw_if_index, is_add, 0, 0);
vnet_feature_enable_disable ("ip6-output", "ipsec6-output-feature",
sw_if_index, is_add, 0, 0);
config.spd_index = spd_index;
/* enable IPsec on RX */
vnet_feature_enable_disable ("ip4-unicast", "ipsec4-input-feature",
sw_if_index, is_add, &config, sizeof (config));
vnet_feature_enable_disable ("ip6-unicast", "ipsec6-input-feature",
sw_if_index, is_add, &config, sizeof (config));
return 0;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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