/* * 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; ipsec_spd_fp_t *fp_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; hash_foreach (k, v, im->spd_index_by_sw_if_index, ({ if (v == spd_index) ipsec_set_interface_spd(vm, k, spd_id, 0); })); 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 _ fp_spd = &spd->fp_spd; if (im->fp_spd_ipv4_out_is_enabled) { if (fp_spd->ip4_out_lookup_hash_idx != INDEX_INVALID) { clib_bihash_16_8_t *bihash_table = pool_elt_at_index (im->fp_ip4_lookup_hashes_pool, fp_spd->ip4_out_lookup_hash_idx); clib_bihash_free_16_8 (bihash_table); vec_free (fp_spd->name4_out); pool_put_index (im->fp_ip4_lookup_hashes_pool, fp_spd->ip4_out_lookup_hash_idx); } } if (im->fp_spd_ipv4_in_is_enabled) { if (fp_spd->ip4_in_lookup_hash_idx != INDEX_INVALID) { clib_bihash_16_8_t *bihash_table = pool_elt_at_index ( im->fp_ip4_lookup_hashes_pool, fp_spd->ip4_in_lookup_hash_idx); clib_bihash_free_16_8 (bihash_table); vec_free (fp_spd->name4_in); pool_put_index (im->fp_ip4_lookup_hashes_pool, fp_spd->ip4_in_lookup_hash_idx); } } if (im->fp_spd_ipv6_out_is_enabled) { if (fp_spd->ip6_out_lookup_hash_idx != INDEX_INVALID) { clib_bihash_40_8_t *bihash_table = pool_elt_at_index (im->fp_ip6_lookup_hashes_pool, fp_spd->ip6_out_lookup_hash_idx); clib_bihash_free_40_8 (bihash_table); vec_free (fp_spd->name6_out); pool_put_index (im->fp_ip6_lookup_hashes_pool, fp_spd->ip6_out_lookup_hash_idx); } } if (im->fp_spd_ipv6_in_is_enabled) { if (fp_spd->ip6_in_lookup_hash_idx != INDEX_INVALID) { clib_bihash_40_8_t *bihash_table = pool_elt_at_index ( im->fp_ip6_lookup_hashes_pool, fp_spd->ip6_in_lookup_hash_idx); clib_bihash_free_40_8 (bihash_table); vec_free (fp_spd->name6_in); pool_put_index (im->fp_ip6_lookup_hashes_pool, fp_spd->ip6_in_lookup_hash_idx); } } 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); fp_spd = &spd->fp_spd; fp_spd->ip4_out_lookup_hash_idx = INDEX_INVALID; fp_spd->ip4_in_lookup_hash_idx = INDEX_INVALID; fp_spd->ip6_out_lookup_hash_idx = INDEX_INVALID; fp_spd->ip6_in_lookup_hash_idx = INDEX_INVALID; if (im->fp_spd_ipv4_out_is_enabled) { if (pool_elts (im->fp_ip4_lookup_hashes_pool) < pool_max_len (im->fp_ip4_lookup_hashes_pool)) { clib_bihash_16_8_t *bihash_table; fp_spd->name4_out = format (0, "spd_%u_fp_ip4_out", spd_id); pool_get (im->fp_ip4_lookup_hashes_pool, bihash_table); fp_spd->ip4_out_lookup_hash_idx = bihash_table - im->fp_ip4_lookup_hashes_pool; clib_bihash_init_16_8 (bihash_table, (char *) fp_spd->name4_out, im->fp_lookup_hash_buckets, im->fp_lookup_hash_buckets * IPSEC_FP_IP4_HASH_MEM_PER_BUCKET); } } if (im->fp_spd_ipv4_in_is_enabled) { if (pool_elts (im->fp_ip4_lookup_hashes_pool) < pool_max_len (im->fp_ip4_lookup_hashes_pool)) { clib_bihash_16_8_t *bihash_table; fp_spd->name4_in = format (0, "spd_%u_fp_ip4_in", spd_id); pool_get (im->fp_ip4_lookup_hashes_pool, bihash_table); fp_spd->ip4_in_lookup_hash_idx = bihash_table - im->fp_ip4_lookup_hashes_pool; clib_bihash_init_16_8 (bihash_table, (char *) fp_spd->name4_in, im->fp_lookup_hash_buckets, im->fp_lookup_hash_buckets * IPSEC_FP_IP4_HASH_MEM_PER_BUCKET); } } if (im->fp_spd_ipv6_out_is_enabled) { if (pool_elts (im->fp_ip6_lookup_hashes_pool) < pool_max_len (im->fp_ip6_lookup_hashes_pool)) { clib_bihash_40_8_t *bihash_table; fp_spd->name6_out = format (0, "spd_%u_fp_ip6_out", spd_id); pool_get (im->fp_ip6_lookup_hashes_pool, bihash_table); fp_spd->ip6_out_lookup_hash_idx = bihash_table - im->fp_ip6_lookup_hashes_pool; clib_bihash_init_40_8 (bihash_table, (char *) fp_spd->name6_out, im->fp_lookup_hash_buckets, im->fp_lookup_hash_buckets * IPSEC_FP_IP6_HASH_MEM_PER_BUCKET); } } if (im->fp_spd_ipv6_in_is_enabled) { if (pool_elts (im->fp_ip6_lookup_hashes_pool) < pool_max_len (im->fp_ip6_lookup_hashes_pool)) { clib_bihash_40_8_t *bihash_table; fp_spd->name6_in = format (0, "spd_%u_fp_ip6_in", spd_id); pool_get (im->fp_ip6_lookup_hashes_pool, bihash_table); fp_spd->ip6_in_lookup_hash_idx = bihash_table - im->fp_ip6_lookup_hashes_pool; clib_bihash_init_40_8 (bihash_table, (char *) fp_spd->name6_in, im->fp_lookup_hash_buckets, im->fp_lookup_hash_buckets * IPSEC_FP_IP6_HASH_MEM_PER_BUCKET); } } } 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: */