/* * ipsec.c : IPSEC module functions * * 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/udp/udp_local.h> #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/esp.h> #include <vnet/ipsec/ah.h> #include <vnet/ipsec/ipsec_tun.h> #include <vnet/ipsec/ipsec_itf.h> /* Flow cache is sized for 1 million flows with a load factor of .25. */ #define IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS (1 << 22) /* Flow cache is sized for 1 million flows with a load factor of .25. */ #define IPSEC4_SPD_DEFAULT_HASH_NUM_BUCKETS (1 << 22) ipsec_main_t ipsec_main; esp_async_post_next_t esp_encrypt_async_next; esp_async_post_next_t esp_decrypt_async_next; static clib_error_t * ipsec_check_ah_support (ipsec_sa_t * sa) { ipsec_main_t *im = &ipsec_main; if (sa->integ_alg == IPSEC_INTEG_ALG_NONE) return clib_error_return (0, "unsupported none integ-alg"); if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg)) return clib_error_return (0, "No crypto engine support for %U", format_ipsec_integ_alg, sa->integ_alg); return 0; } static clib_error_t * ipsec_check_esp_support (ipsec_sa_t * sa) { ipsec_main_t *im = &ipsec_main; if (IPSEC_INTEG_ALG_NONE != sa->integ_alg) { if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg)) return clib_error_return (0, "No crypto engine support for %U", format_ipsec_integ_alg, sa->integ_alg); } if (IPSEC_CRYPTO_ALG_NONE != sa->crypto_alg) { if (!vnet_crypto_is_set_handler (im->crypto_algs[sa->crypto_alg].alg)) return clib_error_return (0, "No crypto engine support for %U", format_ipsec_crypto_alg, sa->crypto_alg); } return (0); } clib_error_t * ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index, u8 is_add) { ipsec_ah_backend_t *ah = pool_elt_at_index (im->ah_backends, im->ah_current_backend); if (ah->add_del_sa_sess_cb) { clib_error_t *err = ah->add_del_sa_sess_cb (sa_index, is_add); if (err) return err; } ipsec_esp_backend_t *esp = pool_elt_at_index (im->esp_backends, im->esp_current_backend); if (esp->add_del_sa_sess_cb) { clib_error_t *err = esp->add_del_sa_sess_cb (sa_index, is_add); if (err) return err; } return 0; } clib_error_t * ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa) { clib_error_t *error = 0; if (PREDICT_FALSE (sa->protocol == IPSEC_PROTOCOL_AH)) { ipsec_ah_backend_t *ah = pool_elt_at_index (im->ah_backends, im->ah_current_backend); ASSERT (ah->check_support_cb); error = ah->check_support_cb (sa); } else { ipsec_esp_backend_t *esp = pool_elt_at_index (im->esp_backends, im->esp_current_backend); ASSERT (esp->check_support_cb); error = esp->check_support_cb (sa); } return error; } static void ipsec_add_node (vlib_main_t * vm, const char *node_name, const char *prev_node_name, u32 * out_node_index, u32 * out_next_index) { vlib_node_t *prev_node, *node; prev_node = vlib_get_node_by_name (vm, (u8 *) prev_node_name); ASSERT (prev_node); node = vlib_get_node_by_name (vm, (u8 *) node_name); ASSERT (node); *out_node_index = node->index; *out_next_index = vlib_node_add_next (vm, prev_node->index, node->index); } void ipsec_unregister_udp_port (u16 port) { ipsec_main_t *im = &ipsec_main; u32 n_regs; uword *p; p = hash_get (im->udp_port_registrations, port); ASSERT (p); n_regs = p[0]; if (0 == --n_regs) { udp_unregister_dst_port (vlib_get_main (), port, 1); hash_unset (im->udp_port_registrations, port); } else { hash_unset (im->udp_port_registrations, port); hash_set (im->udp_port_registrations, port, n_regs); } } void ipsec_register_udp_port (u16 port) { ipsec_main_t *im = &ipsec_main; u32 n_regs; uword *p; p = hash_get (im->udp_port_registrations, port); n_regs = (p ? p[0] : 0); if (0 == n_regs++) udp_register_dst_port (vlib_get_main (), port, ipsec4_tun_input_node.index, 1); hash_unset (im->udp_port_registrations, port); hash_set (im->udp_port_registrations, port, n_regs); } u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im, const char *name, const char *ah4_encrypt_node_name, const char *ah4_decrypt_node_name, const char *ah6_encrypt_node_name, const char *ah6_decrypt_node_name, check_support_cb_t ah_check_support_cb, add_del_sa_sess_cb_t ah_add_del_sa_sess_cb) { ipsec_ah_backend_t *b; pool_get (im->ah_backends, b); b->name = format (0, "%s%c", name, 0); ipsec_add_node (vm, ah4_encrypt_node_name, "ipsec4-output-feature", &b->ah4_encrypt_node_index, &b->ah4_encrypt_next_index); ipsec_add_node (vm, ah4_decrypt_node_name, "ipsec4-input-feature", &b->ah4_decrypt_node_index, &b->ah4_decrypt_next_index); ipsec_add_node (vm, ah6_encrypt_node_name, "ipsec6-output-feature", &b->ah6_encrypt_node_index, &b->ah6_encrypt_next_index); ipsec_add_node (vm, ah6_decrypt_node_name, "ipsec6-input-feature", &b->ah6_decrypt_node_index, &b->ah6_decrypt_next_index); b->check_support_cb = ah_check_support_cb; b->add_del_sa_sess_cb = ah_add_del_sa_sess_cb; return b - im->ah_backends; } u32 ipsec_register_esp_backend ( vlib_main_t *vm, ipsec_main_t *im, const char *name, const char *esp4_encrypt_node_name, const char *esp4_encrypt_node_tun_name, const char *esp4_decrypt_node_name, const char *esp4_decrypt_tun_node_name, const char *esp6_encrypt_node_name, const char *esp6_encrypt_node_tun_name, const char *esp6_decrypt_node_name, const char *esp6_decrypt_tun_node_name, const char *esp_mpls_encrypt_node_tun_name, check_support_cb_t esp_check_support_cb, add_del_sa_sess_cb_t esp_add_del_sa_sess_cb, enable_disable_cb_t enable_disable_cb) { ipsec_esp_backend_t *b; pool_get (im->esp_backends, b); b->name = format (0, "%s%c", name, 0); ipsec_add_node (vm, esp4_encrypt_node_name, "ipsec4-output-feature", &b->esp4_encrypt_node_index, &b->esp4_encrypt_next_index); ipsec_add_node (vm, esp4_decrypt_node_name, "ipsec4-input-feature", &b->esp4_decrypt_node_index, &b->esp4_decrypt_next_index); ipsec_add_node (vm, esp6_encrypt_node_name, "ipsec6-output-feature", &b->esp6_encrypt_node_index, &b->esp6_encrypt_next_index); ipsec_add_node (vm, esp6_decrypt_node_name, "ipsec6-input-feature", &b->esp6_decrypt_node_index, &b->esp6_decrypt_next_index); ipsec_add_node (vm, esp4_decrypt_tun_node_name, "ipsec4-tun-input", &b->esp4_decrypt_tun_node_index, &b->esp4_decrypt_tun_next_index); ipsec_add_node (vm, esp6_decrypt_tun_node_name, "ipsec6-tun-input", &b->esp6_decrypt_tun_node_index, &b->esp6_decrypt_tun_next_index); b->esp6_encrypt_tun_node_index = vlib_get_node_by_name (vm, (u8 *) esp6_encrypt_node_tun_name)->index; b->esp_mpls_encrypt_tun_node_index = vlib_get_node_by_name (vm, (u8 *) esp_mpls_encrypt_node_tun_name)->index; b->esp4_encrypt_tun_node_index = vlib_get_node_by_name (vm, (u8 *) esp4_encrypt_node_tun_name)->index; b->check_support_cb = esp_check_support_cb; b->add_del_sa_sess_cb = esp_add_del_sa_sess_cb; b->enable_disable_cb = enable_disable_cb; return b - im->esp_backends; } clib_error_t * ipsec_rsc_in_use (ipsec_main_t * im) { /* return an error is crypto resource are in use */ if (pool_elts (ipsec_sa_pool) > 0) return clib_error_return (0, "%d SA entries configured", pool_elts (ipsec_sa_pool)); if (ipsec_itf_count () > 0) return clib_error_return (0, "%d IPSec interface configured", ipsec_itf_count ()); return (NULL); } int ipsec_select_ah_backend (ipsec_main_t * im, u32 backend_idx) { if (ipsec_rsc_in_use (im)) return VNET_API_ERROR_RSRC_IN_USE; if (pool_is_free_index (im->ah_backends, backend_idx)) return VNET_API_ERROR_INVALID_VALUE; ipsec_ah_backend_t *b = pool_elt_at_index (im->ah_backends, backend_idx); im->ah_current_backend = backend_idx; im->ah4_encrypt_node_index = b->ah4_encrypt_node_index; im->ah4_decrypt_node_index = b->ah4_decrypt_node_index; im->ah4_encrypt_next_index = b->ah4_encrypt_next_index; im->ah4_decrypt_next_index = b->ah4_decrypt_next_index; im->ah6_encrypt_node_index = b->ah6_encrypt_node_index; im->ah6_decrypt_node_index = b->ah6_decrypt_node_index; im->ah6_encrypt_next_index = b->ah6_encrypt_next_index; im->ah6_decrypt_next_index = b->ah6_decrypt_next_index; return 0; } int ipsec_select_esp_backend (ipsec_main_t * im, u32 backend_idx) { if (ipsec_rsc_in_use (im)) return VNET_API_ERROR_RSRC_IN_USE; if (pool_is_free_index (im->esp_backends, backend_idx)) return VNET_API_ERROR_INVALID_VALUE; /* disable current backend */ if (im->esp_current_backend != ~0) { ipsec_esp_backend_t *cb = pool_elt_at_index (im->esp_backends, im->esp_current_backend); if (cb->enable_disable_cb) { if ((cb->enable_disable_cb) (0) != 0) return -1; } } ipsec_esp_backend_t *b = pool_elt_at_index (im->esp_backends, backend_idx); im->esp_current_backend = backend_idx; im->esp4_encrypt_node_index = b->esp4_encrypt_node_index; im->esp4_decrypt_node_index = b->esp4_decrypt_node_index; im->esp4_encrypt_next_index = b->esp4_encrypt_next_index; im->esp4_decrypt_next_index = b->esp4_decrypt_next_index; im->esp6_encrypt_node_index = b->esp6_encrypt_node_index; im->esp6_decrypt_node_index = b->esp6_decrypt_node_index; im->esp6_encrypt_next_index = b->esp6_encrypt_next_index; im->esp6_decrypt_next_index = b->esp6_decrypt_next_index; im->esp4_decrypt_tun_node_index = b->esp4_decrypt_tun_node_index; im->esp4_decrypt_tun_next_index = b->esp4_decrypt_tun_next_index; im->esp6_decrypt_tun_node_index = b->esp6_decrypt_tun_node_index; im->esp6_decrypt_tun_next_index = b->esp6_decrypt_tun_next_index; im->esp4_encrypt_tun_node_index = b->esp4_encrypt_tun_node_index; im->esp6_encrypt_tun_node_index = b->esp6_encrypt_tun_node_index; im->esp_mpls_encrypt_tun_node_index = b->esp_mpls_encrypt_tun_node_index; if (b->enable_disable_cb) { if ((b->enable_disable_cb) (1) != 0) return -1; } return 0; } void ipsec_set_async_mode (u32 is_enabled) { ipsec_main_t *im = &ipsec_main; ipsec_sa_t *sa; vnet_crypto_request_async_mode (is_enabled); im->async_mode = is_enabled; /* change SA crypto op data */ pool_foreach (sa, ipsec_sa_pool) { sa->crypto_op_data = (is_enabled ? sa->async_op_data.data : sa->sync_op_data.data); } } static void crypto_engine_backend_register_post_node (vlib_main_t * vm) { esp_async_post_next_t *eit; esp_async_post_next_t *dit; eit = &esp_encrypt_async_next; eit->esp4_post_next = vnet_crypto_register_post_node (vm, "esp4-encrypt-post"); eit->esp6_post_next = vnet_crypto_register_post_node (vm, "esp6-encrypt-post"); eit->esp4_tun_post_next = vnet_crypto_register_post_node (vm, "esp4-encrypt-tun-post"); eit->esp6_tun_post_next = vnet_crypto_register_post_node (vm, "esp6-encrypt-tun-post"); eit->esp_mpls_tun_post_next = vnet_crypto_register_post_node (vm, "esp-mpls-encrypt-tun-post"); dit = &esp_decrypt_async_next; dit->esp4_post_next = vnet_crypto_register_post_node (vm, "esp4-decrypt-post"); dit->esp6_post_next = vnet_crypto_register_post_node (vm, "esp6-decrypt-post"); dit->esp4_tun_post_next = vnet_crypto_register_post_node (vm, "esp4-decrypt-tun-post"); dit->esp6_tun_post_next = vnet_crypto_register_post_node (vm, "esp6-decrypt-tun-post"); } static clib_error_t * ipsec_init (vlib_main_t * vm) { clib_error_t *error; ipsec_main_t *im = &ipsec_main; ipsec_main_crypto_alg_t *a; /* Backend registration requires the feature arcs to be set up */ if ((error = vlib_call_init_function (vm, vnet_feature_init))) return (error); im->vnet_main = vnet_get_main (); im->vlib_main = vm; im->spd_index_by_spd_id = hash_create (0, sizeof (uword)); im->sa_index_by_sa_id = hash_create (0, sizeof (uword)); im->spd_index_by_sw_if_index = hash_create (0, sizeof (uword)); vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); ASSERT (node); im->error_drop_node_index = node->index; im->ah_current_backend = ~0; im->esp_current_backend = ~0; u32 idx = ipsec_register_ah_backend (vm, im, "crypto engine backend", "ah4-encrypt", "ah4-decrypt", "ah6-encrypt", "ah6-decrypt", ipsec_check_ah_support, NULL); im->ah_default_backend = idx; int rv = ipsec_select_ah_backend (im, idx); ASSERT (0 == rv); (void) (rv); // avoid warning idx = ipsec_register_esp_backend ( vm, im, "crypto engine backend", "esp4-encrypt", "esp4-encrypt-tun", "esp4-decrypt", "esp4-decrypt-tun", "esp6-encrypt", "esp6-encrypt-tun", "esp6-decrypt", "esp6-decrypt-tun", "esp-mpls-encrypt-tun", ipsec_check_esp_support, NULL, crypto_dispatch_enable_disable); im->esp_default_backend = idx; rv = ipsec_select_esp_backend (im, idx); ASSERT (0 == rv); (void) (rv); // avoid warning if ((error = vlib_call_init_function (vm, ipsec_cli_init))) return error; vec_validate (im->crypto_algs, IPSEC_CRYPTO_N_ALG - 1); a = im->crypto_algs + IPSEC_CRYPTO_ALG_NONE; a->enc_op_id = VNET_CRYPTO_OP_NONE; a->dec_op_id = VNET_CRYPTO_OP_NONE; a->alg = VNET_CRYPTO_ALG_NONE; a->iv_size = 0; a->block_align = 1; a = im->crypto_algs + IPSEC_CRYPTO_ALG_DES_CBC; a->enc_op_id = VNET_CRYPTO_OP_DES_CBC_ENC; a->dec_op_id = VNET_CRYPTO_OP_DES_CBC_DEC; a->alg = VNET_CRYPTO_ALG_DES_CBC; a->iv_size = a->block_align = 8; a = im->crypto_algs + IPSEC_CRYPTO_ALG_3DES_CBC; a->enc_op_id = VNET_CRYPTO_OP_3DES_CBC_ENC; a->dec_op_id = VNET_CRYPTO_OP_3DES_CBC_DEC; a->alg = VNET_CRYPTO_ALG_3DES_CBC; a->iv_size = a->block_align = 8; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_128; a->enc_op_id = VNET_CRYPTO_OP_AES_128_CBC_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_128_CBC_DEC; a->alg = VNET_CRYPTO_ALG_AES_128_CBC; a->iv_size = a->block_align = 16; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_192; a->enc_op_id = VNET_CRYPTO_OP_AES_192_CBC_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_192_CBC_DEC; a->alg = VNET_CRYPTO_ALG_AES_192_CBC; a->iv_size = a->block_align = 16; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_256; a->enc_op_id = VNET_CRYPTO_OP_AES_256_CBC_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_256_CBC_DEC; a->alg = VNET_CRYPTO_ALG_AES_256_CBC; a->iv_size = a->block_align = 16; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_128; a->enc_op_id = VNET_CRYPTO_OP_AES_128_CTR_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_128_CTR_DEC; a->alg = VNET_CRYPTO_ALG_AES_128_CTR; a->iv_size = 8; a->block_align = 1; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_192; a->enc_op_id = VNET_CRYPTO_OP_AES_192_CTR_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_192_CTR_DEC; a->alg = VNET_CRYPTO_ALG_AES_192_CTR; a->iv_size = 8; a->block_align = 1; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CTR_256; a->enc_op_id = VNET_CRYPTO_OP_AES_256_CTR_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_256_CTR_DEC; a->alg = VNET_CRYPTO_ALG_AES_256_CTR; a->iv_size = 8; a->block_align = 1; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_128; a->enc_op_id = VNET_CRYPTO_OP_AES_128_GCM_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_128_GCM_DEC; a->alg = VNET_CRYPTO_ALG_AES_128_GCM; a->iv_size = 8; a->block_align = 1; a->icv_size = 16; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_192; a->enc_op_id = VNET_CRYPTO_OP_AES_192_GCM_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_192_GCM_DEC; a->alg = VNET_CRYPTO_ALG_AES_192_GCM; a->iv_size = 8; a->block_align = 1; a->icv_size = 16; a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_256; a->enc_op_id = VNET_CRYPTO_OP_AES_256_GCM_ENC; a->dec_op_id = VNET_CRYPTO_OP_AES_256_GCM_DEC; a->alg = VNET_CRYPTO_ALG_AES_256_GCM; a->iv_size = 8; a->block_align = 1; a->icv_size = 16; vec_validate (im->integ_algs, IPSEC_INTEG_N_ALG - 1); ipsec_main_integ_alg_t *i; i = &im->integ_algs[IPSEC_INTEG_ALG_MD5_96]; i->op_id = VNET_CRYPTO_OP_MD5_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_MD5; i->icv_size = 12; i = &im->integ_algs[IPSEC_INTEG_ALG_SHA1_96]; i->op_id = VNET_CRYPTO_OP_SHA1_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_SHA1; i->icv_size = 12; i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_96]; i->op_id = VNET_CRYPTO_OP_SHA1_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_SHA256; i->icv_size = 12; i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_128]; i->op_id = VNET_CRYPTO_OP_SHA256_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_SHA256; i->icv_size = 16; i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_384_192]; i->op_id = VNET_CRYPTO_OP_SHA384_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_SHA384; i->icv_size = 24; i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_512_256]; i->op_id = VNET_CRYPTO_OP_SHA512_HMAC; i->alg = VNET_CRYPTO_ALG_HMAC_SHA512; i->icv_size = 32; vec_validate_aligned (im->ptd, vlib_num_workers (), CLIB_CACHE_LINE_BYTES); im->async_mode = 0; crypto_engine_backend_register_post_node (vm); im->ipsec4_out_spd_hash_tbl = NULL; im->output_flow_cache_flag = 0; im->ipsec4_out_spd_flow_cache_entries = 0; im->epoch_count = 0; im->ipsec4_out_spd_hash_num_buckets = IPSEC4_OUT_SPD_DEFAULT_HASH_NUM_BUCKETS; im->ipsec4_in_spd_hash_tbl = NULL; im->input_flow_cache_flag = 0; im->ipsec4_in_spd_flow_cache_entries = 0; im->input_epoch_count = 0; im->ipsec4_in_spd_hash_num_buckets = IPSEC4_SPD_DEFAULT_HASH_NUM_BUCKETS; return 0; } VLIB_INIT_FUNCTION (ipsec_init); static clib_error_t * ipsec_config (vlib_main_t *vm, unformat_input_t *input) { ipsec_main_t *im = &ipsec_main; unformat_input_t sub_input; u32 ipsec4_out_spd_hash_num_buckets; u32 ipsec4_in_spd_hash_num_buckets; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "ipv4-outbound-spd-flow-cache on")) im->output_flow_cache_flag = 1; else if (unformat (input, "ipv4-outbound-spd-flow-cache off")) im->output_flow_cache_flag = 0; else if (unformat (input, "ipv4-outbound-spd-hash-buckets %d", &ipsec4_out_spd_hash_num_buckets)) { /* Size of hash is power of 2 >= number of buckets */ im->ipsec4_out_spd_hash_num_buckets = 1ULL << max_log2 (ipsec4_out_spd_hash_num_buckets); } else if (unformat (input, "ipv4-inbound-spd-flow-cache on")) im->input_flow_cache_flag = 1; else if (unformat (input, "ipv4-inbound-spd-flow-cache off")) im->input_flow_cache_flag = 0; else if (unformat (input, "ipv4-inbound-spd-hash-buckets %d", &ipsec4_in_spd_hash_num_buckets)) { im->ipsec4_in_spd_hash_num_buckets = 1ULL << max_log2 (ipsec4_in_spd_hash_num_buckets); } else if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input, &sub_input)) { uword table_size = ~0; u32 n_buckets = ~0; while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT) { if (unformat (&sub_input, "num-buckets %u", &n_buckets)) ; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, &sub_input); } ipsec_tun_table_init (AF_IP4, table_size, n_buckets); } else if (unformat (input, "ip6 %U", unformat_vlib_cli_sub_input, &sub_input)) { uword table_size = ~0; u32 n_buckets = ~0; while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT) { if (unformat (&sub_input, "num-buckets %u", &n_buckets)) ; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, &sub_input); } ipsec_tun_table_init (AF_IP6, table_size, n_buckets); } else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } if (im->output_flow_cache_flag) { vec_add2 (im->ipsec4_out_spd_hash_tbl, im->ipsec4_out_spd_hash_tbl, im->ipsec4_out_spd_hash_num_buckets); } if (im->input_flow_cache_flag) { vec_add2 (im->ipsec4_in_spd_hash_tbl, im->ipsec4_in_spd_hash_tbl, im->ipsec4_in_spd_hash_num_buckets); } return 0; } VLIB_CONFIG_FUNCTION (ipsec_config, "ipsec"); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */