X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=examples%2Fipsec-secgw%2Fsa.c;h=4cb90857c7c71390368eb0552f5c49dcafda256e;hb=403e9d914bdb2291c3ba73a9262545aa2c9f4eca;hp=b6260ede0ec4b67a3a878f904a7fd6ae35f06380;hpb=66085224474943288083f943725ba73192f558f1;p=dpdk.git diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c index b6260ede0e..4cb90857c7 100644 --- a/examples/ipsec-secgw/sa.c +++ b/examples/ipsec-secgw/sa.c @@ -1,34 +1,5 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2016 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2016-2017 Intel Corporation */ /* @@ -37,253 +8,801 @@ #include #include #include +#include #include #include +#include #include #include #include +#include +#include +#include +#include #include "ipsec.h" #include "esp.h" +#include "parser.h" -/* SAs EP0 Outbound */ -const struct ipsec_sa sa_ep0_out[] = { - { 5, 0, IPv4(172, 16, 1, 5), IPv4(172, 16, 2, 5), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 6, 0, IPv4(172, 16, 1, 6), IPv4(172, 16, 2, 6), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 7, 0, IPv4(172, 16, 1, 7), IPv4(172, 16, 2, 7), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 8, 0, IPv4(172, 16, 1, 8), IPv4(172, 16, 2, 8), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 9, 0, IPv4(172, 16, 1, 5), IPv4(172, 16, 2, 5), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_NULL, RTE_CRYPTO_AUTH_NULL, - 0, 0, 4, - 0, 0 }, -}; +#define IPDEFTTL 64 + +#define IP4_FULL_MASK (sizeof(((struct ip_addr *)NULL)->ip.ip4) * CHAR_BIT) + +#define IP6_FULL_MASK (sizeof(((struct ip_addr *)NULL)->ip.ip6.ip6) * CHAR_BIT) -/* SAs EP0 Inbound */ -const struct ipsec_sa sa_ep0_in[] = { - { 5, 0, IPv4(172, 16, 2, 5), IPv4(172, 16, 1, 5), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 6, 0, IPv4(172, 16, 2, 6), IPv4(172, 16, 1, 6), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 7, 0, IPv4(172, 16, 2, 7), IPv4(172, 16, 1, 7), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 8, 0, IPv4(172, 16, 2, 8), IPv4(172, 16, 1, 8), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 9, 0, IPv4(172, 16, 2, 5), IPv4(172, 16, 1, 5), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_NULL, RTE_CRYPTO_AUTH_NULL, - 0, 0, 4, - 0, 0 }, +#define MBUF_NO_SEC_OFFLOAD(m) ((m->ol_flags & PKT_RX_SEC_OFFLOAD) == 0) + +struct supported_cipher_algo { + const char *keyword; + enum rte_crypto_cipher_algorithm algo; + uint16_t iv_len; + uint16_t block_size; + uint16_t key_len; }; -/* SAs EP1 Outbound */ -const struct ipsec_sa sa_ep1_out[] = { - { 5, 0, IPv4(172, 16, 2, 5), IPv4(172, 16, 1, 5), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 6, 0, IPv4(172, 16, 2, 6), IPv4(172, 16, 1, 6), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 7, 0, IPv4(172, 16, 2, 7), IPv4(172, 16, 1, 7), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 8, 0, IPv4(172, 16, 2, 8), IPv4(172, 16, 1, 8), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 9, 0, IPv4(172, 16, 2, 5), IPv4(172, 16, 1, 5), - NULL, NULL, - esp4_tunnel_outbound_pre_crypto, - esp4_tunnel_outbound_post_crypto, - RTE_CRYPTO_CIPHER_NULL, RTE_CRYPTO_AUTH_NULL, - 0, 0, 4, - 0, 0 }, +struct supported_auth_algo { + const char *keyword; + enum rte_crypto_auth_algorithm algo; + uint16_t digest_len; + uint16_t key_len; + uint8_t key_not_req; }; -/* SAs EP1 Inbound */ -const struct ipsec_sa sa_ep1_in[] = { - { 5, 0, IPv4(172, 16, 1, 5), IPv4(172, 16, 2, 5), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 6, 0, IPv4(172, 16, 1, 6), IPv4(172, 16, 2, 6), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 7, 0, IPv4(172, 16, 1, 7), IPv4(172, 16, 2, 7), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 8, 0, IPv4(172, 16, 1, 8), IPv4(172, 16, 2, 8), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_AES_CBC, RTE_CRYPTO_AUTH_SHA1_HMAC, - 12, 16, 16, - 0, 0 }, - { 9, 0, IPv4(172, 16, 1, 5), IPv4(172, 16, 2, 5), - NULL, NULL, - esp4_tunnel_inbound_pre_crypto, - esp4_tunnel_inbound_post_crypto, - RTE_CRYPTO_CIPHER_NULL, RTE_CRYPTO_AUTH_NULL, - 0, 0, 4, - 0, 0 }, +struct supported_aead_algo { + const char *keyword; + enum rte_crypto_aead_algorithm algo; + uint16_t iv_len; + uint16_t block_size; + uint16_t digest_len; + uint16_t key_len; + uint8_t aad_len; }; -static uint8_t cipher_key[256] = "sixteenbytes key"; -/* AES CBC xform */ -const struct rte_crypto_sym_xform aescbc_enc_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_CIPHER, - {.cipher = { RTE_CRYPTO_CIPHER_OP_ENCRYPT, RTE_CRYPTO_CIPHER_AES_CBC, - .key = { cipher_key, 16 } } +const struct supported_cipher_algo cipher_algos[] = { + { + .keyword = "null", + .algo = RTE_CRYPTO_CIPHER_NULL, + .iv_len = 0, + .block_size = 4, + .key_len = 0 + }, + { + .keyword = "aes-128-cbc", + .algo = RTE_CRYPTO_CIPHER_AES_CBC, + .iv_len = 16, + .block_size = 16, + .key_len = 16 + }, + { + .keyword = "aes-256-cbc", + .algo = RTE_CRYPTO_CIPHER_AES_CBC, + .iv_len = 16, + .block_size = 16, + .key_len = 32 + }, + { + .keyword = "aes-128-ctr", + .algo = RTE_CRYPTO_CIPHER_AES_CTR, + .iv_len = 8, + .block_size = 4, + .key_len = 20 + }, + { + .keyword = "3des-cbc", + .algo = RTE_CRYPTO_CIPHER_3DES_CBC, + .iv_len = 8, + .block_size = 8, + .key_len = 24 } }; -const struct rte_crypto_sym_xform aescbc_dec_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_CIPHER, - {.cipher = { RTE_CRYPTO_CIPHER_OP_DECRYPT, RTE_CRYPTO_CIPHER_AES_CBC, - .key = { cipher_key, 16 } } +const struct supported_auth_algo auth_algos[] = { + { + .keyword = "null", + .algo = RTE_CRYPTO_AUTH_NULL, + .digest_len = 0, + .key_len = 0, + .key_not_req = 1 + }, + { + .keyword = "sha1-hmac", + .algo = RTE_CRYPTO_AUTH_SHA1_HMAC, + .digest_len = 12, + .key_len = 20 + }, + { + .keyword = "sha256-hmac", + .algo = RTE_CRYPTO_AUTH_SHA256_HMAC, + .digest_len = 12, + .key_len = 32 } }; -static uint8_t auth_key[256] = "twentybytes hash key"; - -/* SHA1 HMAC xform */ -const struct rte_crypto_sym_xform sha1hmac_gen_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_AUTH, - {.auth = { RTE_CRYPTO_AUTH_OP_GENERATE, RTE_CRYPTO_AUTH_SHA1_HMAC, - .key = { auth_key, 20 }, 12, 0 } +const struct supported_aead_algo aead_algos[] = { + { + .keyword = "aes-128-gcm", + .algo = RTE_CRYPTO_AEAD_AES_GCM, + .iv_len = 8, + .block_size = 4, + .key_len = 20, + .digest_len = 16, + .aad_len = 8, } }; -const struct rte_crypto_sym_xform sha1hmac_verify_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_AUTH, - {.auth = { RTE_CRYPTO_AUTH_OP_VERIFY, RTE_CRYPTO_AUTH_SHA1_HMAC, - .key = { auth_key, 20 }, 12, 0 } +static struct ipsec_sa sa_out[IPSEC_SA_MAX_ENTRIES]; +static uint32_t nb_sa_out; + +static struct ipsec_sa sa_in[IPSEC_SA_MAX_ENTRIES]; +static uint32_t nb_sa_in; + +static const struct supported_cipher_algo * +find_match_cipher_algo(const char *cipher_keyword) +{ + size_t i; + + for (i = 0; i < RTE_DIM(cipher_algos); i++) { + const struct supported_cipher_algo *algo = + &cipher_algos[i]; + + if (strcmp(cipher_keyword, algo->keyword) == 0) + return algo; } -}; -/* AES CBC xform */ -const struct rte_crypto_sym_xform null_cipher_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_CIPHER, - {.cipher = { .algo = RTE_CRYPTO_CIPHER_NULL } + return NULL; +} + +static const struct supported_auth_algo * +find_match_auth_algo(const char *auth_keyword) +{ + size_t i; + + for (i = 0; i < RTE_DIM(auth_algos); i++) { + const struct supported_auth_algo *algo = + &auth_algos[i]; + + if (strcmp(auth_keyword, algo->keyword) == 0) + return algo; } -}; -const struct rte_crypto_sym_xform null_auth_xf = { - NULL, - RTE_CRYPTO_SYM_XFORM_AUTH, - {.auth = { .algo = RTE_CRYPTO_AUTH_NULL } + return NULL; +} + +static const struct supported_aead_algo * +find_match_aead_algo(const char *aead_keyword) +{ + size_t i; + + for (i = 0; i < RTE_DIM(aead_algos); i++) { + const struct supported_aead_algo *algo = + &aead_algos[i]; + + if (strcmp(aead_keyword, algo->keyword) == 0) + return algo; } -}; + + return NULL; +} + +/** parse_key_string + * parse x:x:x:x.... hex number key string into uint8_t *key + * return: + * > 0: number of bytes parsed + * 0: failed + */ +static uint32_t +parse_key_string(const char *key_str, uint8_t *key) +{ + const char *pt_start = key_str, *pt_end = key_str; + uint32_t nb_bytes = 0; + + while (pt_end != NULL) { + char sub_str[3] = {0}; + + pt_end = strchr(pt_start, ':'); + + if (pt_end == NULL) { + if (strlen(pt_start) > 2) + return 0; + strncpy(sub_str, pt_start, 2); + } else { + if (pt_end - pt_start > 2) + return 0; + + strncpy(sub_str, pt_start, pt_end - pt_start); + pt_start = pt_end + 1; + } + + key[nb_bytes++] = strtol(sub_str, NULL, 16); + } + + return nb_bytes; +} + +void +parse_sa_tokens(char **tokens, uint32_t n_tokens, + struct parse_status *status) +{ + struct ipsec_sa *rule = NULL; + struct rte_ipsec_session *ips; + uint32_t ti; /*token index*/ + uint32_t *ri /*rule index*/; + uint32_t cipher_algo_p = 0; + uint32_t auth_algo_p = 0; + uint32_t aead_algo_p = 0; + uint32_t src_p = 0; + uint32_t dst_p = 0; + uint32_t mode_p = 0; + uint32_t type_p = 0; + uint32_t portid_p = 0; + uint32_t fallback_p = 0; + + if (strcmp(tokens[0], "in") == 0) { + ri = &nb_sa_in; + + APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status, + "too many sa rules, abort insertion\n"); + if (status->status < 0) + return; + + rule = &sa_in[*ri]; + rule->direction = RTE_SECURITY_IPSEC_SA_DIR_INGRESS; + } else { + ri = &nb_sa_out; + + APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status, + "too many sa rules, abort insertion\n"); + if (status->status < 0) + return; + + rule = &sa_out[*ri]; + rule->direction = RTE_SECURITY_IPSEC_SA_DIR_EGRESS; + } + + /* spi number */ + APP_CHECK_TOKEN_IS_NUM(tokens, 1, status); + if (status->status < 0) + return; + if (atoi(tokens[1]) == INVALID_SPI) + return; + rule->spi = atoi(tokens[1]); + ips = ipsec_get_primary_session(rule); + + for (ti = 2; ti < n_tokens; ti++) { + if (strcmp(tokens[ti], "mode") == 0) { + APP_CHECK_PRESENCE(mode_p, tokens[ti], status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + if (strcmp(tokens[ti], "ipv4-tunnel") == 0) + rule->flags = IP4_TUNNEL; + else if (strcmp(tokens[ti], "ipv6-tunnel") == 0) + rule->flags = IP6_TUNNEL; + else if (strcmp(tokens[ti], "transport") == 0) + rule->flags = TRANSPORT; + else { + APP_CHECK(0, status, "unrecognized " + "input \"%s\"", tokens[ti]); + return; + } + + mode_p = 1; + continue; + } + + if (strcmp(tokens[ti], "cipher_algo") == 0) { + const struct supported_cipher_algo *algo; + uint32_t key_len; + + APP_CHECK_PRESENCE(cipher_algo_p, tokens[ti], + status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + algo = find_match_cipher_algo(tokens[ti]); + + APP_CHECK(algo != NULL, status, "unrecognized " + "input \"%s\"", tokens[ti]); + + rule->cipher_algo = algo->algo; + rule->block_size = algo->block_size; + rule->iv_len = algo->iv_len; + rule->cipher_key_len = algo->key_len; + + /* for NULL algorithm, no cipher key required */ + if (rule->cipher_algo == RTE_CRYPTO_CIPHER_NULL) { + cipher_algo_p = 1; + continue; + } + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + APP_CHECK(strcmp(tokens[ti], "cipher_key") == 0, + status, "unrecognized input \"%s\", " + "expect \"cipher_key\"", tokens[ti]); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + key_len = parse_key_string(tokens[ti], + rule->cipher_key); + APP_CHECK(key_len == rule->cipher_key_len, status, + "unrecognized input \"%s\"", tokens[ti]); + if (status->status < 0) + return; + + if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC || + algo->algo == RTE_CRYPTO_CIPHER_3DES_CBC) + rule->salt = (uint32_t)rte_rand(); + + if (algo->algo == RTE_CRYPTO_CIPHER_AES_CTR) { + key_len -= 4; + rule->cipher_key_len = key_len; + memcpy(&rule->salt, + &rule->cipher_key[key_len], 4); + } + + cipher_algo_p = 1; + continue; + } + + if (strcmp(tokens[ti], "auth_algo") == 0) { + const struct supported_auth_algo *algo; + uint32_t key_len; + + APP_CHECK_PRESENCE(auth_algo_p, tokens[ti], + status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + algo = find_match_auth_algo(tokens[ti]); + APP_CHECK(algo != NULL, status, "unrecognized " + "input \"%s\"", tokens[ti]); + + rule->auth_algo = algo->algo; + rule->auth_key_len = algo->key_len; + rule->digest_len = algo->digest_len; + + /* NULL algorithm and combined algos do not + * require auth key + */ + if (algo->key_not_req) { + auth_algo_p = 1; + continue; + } + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + APP_CHECK(strcmp(tokens[ti], "auth_key") == 0, + status, "unrecognized input \"%s\", " + "expect \"auth_key\"", tokens[ti]); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + key_len = parse_key_string(tokens[ti], + rule->auth_key); + APP_CHECK(key_len == rule->auth_key_len, status, + "unrecognized input \"%s\"", tokens[ti]); + if (status->status < 0) + return; + + auth_algo_p = 1; + continue; + } + + if (strcmp(tokens[ti], "aead_algo") == 0) { + const struct supported_aead_algo *algo; + uint32_t key_len; + + APP_CHECK_PRESENCE(aead_algo_p, tokens[ti], + status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + algo = find_match_aead_algo(tokens[ti]); + + APP_CHECK(algo != NULL, status, "unrecognized " + "input \"%s\"", tokens[ti]); + + rule->aead_algo = algo->algo; + rule->cipher_key_len = algo->key_len; + rule->digest_len = algo->digest_len; + rule->aad_len = algo->aad_len; + rule->block_size = algo->block_size; + rule->iv_len = algo->iv_len; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + APP_CHECK(strcmp(tokens[ti], "aead_key") == 0, + status, "unrecognized input \"%s\", " + "expect \"aead_key\"", tokens[ti]); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + key_len = parse_key_string(tokens[ti], + rule->cipher_key); + APP_CHECK(key_len == rule->cipher_key_len, status, + "unrecognized input \"%s\"", tokens[ti]); + if (status->status < 0) + return; + + key_len -= 4; + rule->cipher_key_len = key_len; + memcpy(&rule->salt, + &rule->cipher_key[key_len], 4); + + aead_algo_p = 1; + continue; + } + + if (strcmp(tokens[ti], "src") == 0) { + APP_CHECK_PRESENCE(src_p, tokens[ti], status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + if (IS_IP4_TUNNEL(rule->flags)) { + struct in_addr ip; + + APP_CHECK(parse_ipv4_addr(tokens[ti], + &ip, NULL) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv4 addr", + tokens[ti]); + if (status->status < 0) + return; + rule->src.ip.ip4 = rte_bswap32( + (uint32_t)ip.s_addr); + } else if (IS_IP6_TUNNEL(rule->flags)) { + struct in6_addr ip; + + APP_CHECK(parse_ipv6_addr(tokens[ti], &ip, + NULL) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv6 addr", + tokens[ti]); + if (status->status < 0) + return; + memcpy(rule->src.ip.ip6.ip6_b, + ip.s6_addr, 16); + } else if (IS_TRANSPORT(rule->flags)) { + APP_CHECK(0, status, "unrecognized input " + "\"%s\"", tokens[ti]); + return; + } + + src_p = 1; + continue; + } + + if (strcmp(tokens[ti], "dst") == 0) { + APP_CHECK_PRESENCE(dst_p, tokens[ti], status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + if (IS_IP4_TUNNEL(rule->flags)) { + struct in_addr ip; + + APP_CHECK(parse_ipv4_addr(tokens[ti], + &ip, NULL) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv4 addr", + tokens[ti]); + if (status->status < 0) + return; + rule->dst.ip.ip4 = rte_bswap32( + (uint32_t)ip.s_addr); + } else if (IS_IP6_TUNNEL(rule->flags)) { + struct in6_addr ip; + + APP_CHECK(parse_ipv6_addr(tokens[ti], &ip, + NULL) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv6 addr", + tokens[ti]); + if (status->status < 0) + return; + memcpy(rule->dst.ip.ip6.ip6_b, ip.s6_addr, 16); + } else if (IS_TRANSPORT(rule->flags)) { + APP_CHECK(0, status, "unrecognized " + "input \"%s\"", tokens[ti]); + return; + } + + dst_p = 1; + continue; + } + + if (strcmp(tokens[ti], "type") == 0) { + APP_CHECK_PRESENCE(type_p, tokens[ti], status); + if (status->status < 0) + return; + + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + if (strcmp(tokens[ti], "inline-crypto-offload") == 0) + ips->type = + RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO; + else if (strcmp(tokens[ti], + "inline-protocol-offload") == 0) + ips->type = + RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL; + else if (strcmp(tokens[ti], + "lookaside-protocol-offload") == 0) + ips->type = + RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL; + else if (strcmp(tokens[ti], "no-offload") == 0) + ips->type = RTE_SECURITY_ACTION_TYPE_NONE; + else { + APP_CHECK(0, status, "Invalid input \"%s\"", + tokens[ti]); + return; + } + + type_p = 1; + continue; + } + + if (strcmp(tokens[ti], "port_id") == 0) { + APP_CHECK_PRESENCE(portid_p, tokens[ti], status); + if (status->status < 0) + return; + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + rule->portid = atoi(tokens[ti]); + if (status->status < 0) + return; + portid_p = 1; + continue; + } + + if (strcmp(tokens[ti], "fallback") == 0) { + struct rte_ipsec_session *fb; + + APP_CHECK(app_sa_prm.enable, status, "Fallback session " + "not allowed for legacy mode."); + if (status->status < 0) + return; + APP_CHECK(ips->type == + RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO, status, + "Fallback session allowed if primary session " + "is of type inline-crypto-offload only."); + if (status->status < 0) + return; + APP_CHECK(rule->direction == + RTE_SECURITY_IPSEC_SA_DIR_INGRESS, status, + "Fallback session not allowed for egress " + "rule"); + if (status->status < 0) + return; + APP_CHECK_PRESENCE(fallback_p, tokens[ti], status); + if (status->status < 0) + return; + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + fb = ipsec_get_fallback_session(rule); + if (strcmp(tokens[ti], "lookaside-none") == 0) { + fb->type = RTE_SECURITY_ACTION_TYPE_NONE; + } else { + APP_CHECK(0, status, "unrecognized fallback " + "type %s.", tokens[ti]); + return; + } + + rule->fallback_sessions = 1; + fallback_p = 1; + continue; + } + + /* unrecognizeable input */ + APP_CHECK(0, status, "unrecognized input \"%s\"", + tokens[ti]); + return; + } + + if (aead_algo_p) { + APP_CHECK(cipher_algo_p == 0, status, + "AEAD used, no need for cipher options"); + if (status->status < 0) + return; + + APP_CHECK(auth_algo_p == 0, status, + "AEAD used, no need for auth options"); + if (status->status < 0) + return; + } else { + APP_CHECK(cipher_algo_p == 1, status, "missing cipher or AEAD options"); + if (status->status < 0) + return; + + APP_CHECK(auth_algo_p == 1, status, "missing auth or AEAD options"); + if (status->status < 0) + return; + } + + APP_CHECK(mode_p == 1, status, "missing mode option"); + if (status->status < 0) + return; + + if ((ips->type != RTE_SECURITY_ACTION_TYPE_NONE) && (portid_p == 0)) + printf("Missing portid option, falling back to non-offload\n"); + + if (!type_p || !portid_p) { + ips->type = RTE_SECURITY_ACTION_TYPE_NONE; + rule->portid = -1; + } + + *ri = *ri + 1; +} + +static void +print_one_sa_rule(const struct ipsec_sa *sa, int inbound) +{ + uint32_t i; + uint8_t a, b, c, d; + const struct rte_ipsec_session *ips; + const struct rte_ipsec_session *fallback_ips; + + printf("\tspi_%s(%3u):", inbound?"in":"out", sa->spi); + + for (i = 0; i < RTE_DIM(cipher_algos); i++) { + if (cipher_algos[i].algo == sa->cipher_algo && + cipher_algos[i].key_len == sa->cipher_key_len) { + printf("%s ", cipher_algos[i].keyword); + break; + } + } + + for (i = 0; i < RTE_DIM(auth_algos); i++) { + if (auth_algos[i].algo == sa->auth_algo) { + printf("%s ", auth_algos[i].keyword); + break; + } + } + + for (i = 0; i < RTE_DIM(aead_algos); i++) { + if (aead_algos[i].algo == sa->aead_algo) { + printf("%s ", aead_algos[i].keyword); + break; + } + } + + printf("mode:"); + + switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) { + case IP4_TUNNEL: + printf("IP4Tunnel "); + uint32_t_to_char(sa->src.ip.ip4, &a, &b, &c, &d); + printf("%hhu.%hhu.%hhu.%hhu ", d, c, b, a); + uint32_t_to_char(sa->dst.ip.ip4, &a, &b, &c, &d); + printf("%hhu.%hhu.%hhu.%hhu", d, c, b, a); + break; + case IP6_TUNNEL: + printf("IP6Tunnel "); + for (i = 0; i < 16; i++) { + if (i % 2 && i != 15) + printf("%.2x:", sa->src.ip.ip6.ip6_b[i]); + else + printf("%.2x", sa->src.ip.ip6.ip6_b[i]); + } + printf(" "); + for (i = 0; i < 16; i++) { + if (i % 2 && i != 15) + printf("%.2x:", sa->dst.ip.ip6.ip6_b[i]); + else + printf("%.2x", sa->dst.ip.ip6.ip6_b[i]); + } + break; + case TRANSPORT: + printf("Transport "); + break; + } + + ips = &sa->sessions[IPSEC_SESSION_PRIMARY]; + printf(" type:"); + switch (ips->type) { + case RTE_SECURITY_ACTION_TYPE_NONE: + printf("no-offload "); + break; + case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO: + printf("inline-crypto-offload "); + break; + case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL: + printf("inline-protocol-offload "); + break; + case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL: + printf("lookaside-protocol-offload "); + break; + } + + fallback_ips = &sa->sessions[IPSEC_SESSION_FALLBACK]; + if (fallback_ips != NULL && sa->fallback_sessions > 0) { + printf("inline fallback: "); + if (fallback_ips->type == RTE_SECURITY_ACTION_TYPE_NONE) + printf("lookaside-none"); + else + printf("invalid"); + } + printf("\n"); +} struct sa_ctx { + void *satbl; /* pointer to array of rte_ipsec_sa objects*/ struct ipsec_sa sa[IPSEC_SA_MAX_ENTRIES]; - struct { - struct rte_crypto_sym_xform a; - struct rte_crypto_sym_xform b; + union { + struct { + struct rte_crypto_sym_xform a; + struct rte_crypto_sym_xform b; + }; } xf[IPSEC_SA_MAX_ENTRIES]; }; static struct sa_ctx * -sa_ipv4_create(const char *name, int socket_id) +sa_create(const char *name, int32_t socket_id) { char s[PATH_MAX]; struct sa_ctx *sa_ctx; - unsigned mz_size; + uint32_t mz_size; const struct rte_memzone *mz; snprintf(s, sizeof(s), "%s_%u", name, socket_id); /* Create SA array table */ - printf("Creating SA context with %u maximum entries\n", - IPSEC_SA_MAX_ENTRIES); + printf("Creating SA context with %u maximum entries on socket %d\n", + IPSEC_SA_MAX_ENTRIES, socket_id); mz_size = sizeof(struct sa_ctx); mz = rte_memzone_reserve(s, mz_size, socket_id, RTE_MEMZONE_1GB | RTE_MEMZONE_SIZE_HINT_ONLY); if (mz == NULL) { printf("Failed to allocate SA DB memory\n"); - rte_errno = -ENOMEM; + rte_errno = ENOMEM; return NULL; } @@ -292,12 +811,142 @@ sa_ipv4_create(const char *name, int socket_id) return sa_ctx; } +static int +check_eth_dev_caps(uint16_t portid, uint32_t inbound) +{ + struct rte_eth_dev_info dev_info; + int retval; + + retval = rte_eth_dev_info_get(portid, &dev_info); + if (retval != 0) { + RTE_LOG(ERR, IPSEC, + "Error during getting device (port %u) info: %s\n", + portid, strerror(-retval)); + + return retval; + } + + if (inbound) { + if ((dev_info.rx_offload_capa & + DEV_RX_OFFLOAD_SECURITY) == 0) { + RTE_LOG(WARNING, PORT, + "hardware RX IPSec offload is not supported\n"); + return -EINVAL; + } + + } else { /* outbound */ + if ((dev_info.tx_offload_capa & + DEV_TX_OFFLOAD_SECURITY) == 0) { + RTE_LOG(WARNING, PORT, + "hardware TX IPSec offload is not supported\n"); + return -EINVAL; + } + } + return 0; +} + +/* + * Helper function, tries to determine next_proto for SPI + * by searching though SP rules. + */ +static int +get_spi_proto(uint32_t spi, enum rte_security_ipsec_sa_direction dir, + struct ip_addr ip_addr[2], uint32_t mask[2]) +{ + int32_t rc4, rc6; + + rc4 = sp4_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS, + ip_addr, mask); + rc6 = sp6_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS, + ip_addr, mask); + + if (rc4 >= 0) { + if (rc6 >= 0) { + RTE_LOG(ERR, IPSEC, + "%s: SPI %u used simultaeously by " + "IPv4(%d) and IPv6 (%d) SP rules\n", + __func__, spi, rc4, rc6); + return -EINVAL; + } else + return IPPROTO_IPIP; + } else if (rc6 < 0) { + RTE_LOG(ERR, IPSEC, + "%s: SPI %u is not used by any SP rule\n", + __func__, spi); + return -EINVAL; + } else + return IPPROTO_IPV6; +} + +/* + * Helper function for getting source and destination IP addresses + * from SP. Needed for inline crypto transport mode, as addresses are not + * provided in config file for that mode. It checks if SP for current SA exists, + * and based on what type of protocol is returned, it stores appropriate + * addresses got from SP into SA. + */ +static int +sa_add_address_inline_crypto(struct ipsec_sa *sa) +{ + int protocol; + struct ip_addr ip_addr[2]; + uint32_t mask[2]; + + protocol = get_spi_proto(sa->spi, sa->direction, ip_addr, mask); + if (protocol < 0) + return protocol; + else if (protocol == IPPROTO_IPIP) { + sa->flags |= IP4_TRANSPORT; + if (mask[0] == IP4_FULL_MASK && + mask[1] == IP4_FULL_MASK && + ip_addr[0].ip.ip4 != 0 && + ip_addr[1].ip.ip4 != 0) { + + sa->src.ip.ip4 = ip_addr[0].ip.ip4; + sa->dst.ip.ip4 = ip_addr[1].ip.ip4; + } else { + RTE_LOG(ERR, IPSEC, + "%s: No valid address or mask entry in" + " IPv4 SP rule for SPI %u\n", + __func__, sa->spi); + return -EINVAL; + } + } else if (protocol == IPPROTO_IPV6) { + sa->flags |= IP6_TRANSPORT; + if (mask[0] == IP6_FULL_MASK && + mask[1] == IP6_FULL_MASK && + (ip_addr[0].ip.ip6.ip6[0] != 0 || + ip_addr[0].ip.ip6.ip6[1] != 0) && + (ip_addr[1].ip.ip6.ip6[0] != 0 || + ip_addr[1].ip.ip6.ip6[1] != 0)) { + + sa->src.ip.ip6 = ip_addr[0].ip.ip6; + sa->dst.ip.ip6 = ip_addr[1].ip.ip6; + } else { + RTE_LOG(ERR, IPSEC, + "%s: No valid address or mask entry in" + " IPv6 SP rule for SPI %u\n", + __func__, sa->spi); + return -EINVAL; + } + } + return 0; +} + static int sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[], - unsigned nb_entries, unsigned inbound) + uint32_t nb_entries, uint32_t inbound, + struct socket_ctx *skt_ctx) { struct ipsec_sa *sa; - unsigned i, idx; + uint32_t i, idx; + uint16_t iv_length, aad_length; + int inline_status; + int32_t rc; + struct rte_ipsec_session *ips; + + /* for ESN upper 32 bits of SQN also need to be part of AAD */ + aad_length = (app_sa_prm.enable_esn != 0) ? sizeof(uint32_t) : 0; for (i = 0; i < nb_entries; i++) { idx = SPI2IDX(entries[i].spi); @@ -308,28 +957,134 @@ sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[], return -EINVAL; } *sa = entries[i]; - sa->src = rte_cpu_to_be_32(sa->src); - sa->dst = rte_cpu_to_be_32(sa->dst); - if (inbound) { - if (sa->cipher_algo == RTE_CRYPTO_CIPHER_NULL) { - sa_ctx->xf[idx].a = null_auth_xf; - sa_ctx->xf[idx].b = null_cipher_xf; - } else { - sa_ctx->xf[idx].a = sha1hmac_verify_xf; - sa_ctx->xf[idx].b = aescbc_dec_xf; + sa->seq = 0; + ips = ipsec_get_primary_session(sa); + + if (ips->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL || + ips->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) { + if (check_eth_dev_caps(sa->portid, inbound)) + return -EINVAL; + } + + + switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) { + case IP4_TUNNEL: + sa->src.ip.ip4 = rte_cpu_to_be_32(sa->src.ip.ip4); + sa->dst.ip.ip4 = rte_cpu_to_be_32(sa->dst.ip.ip4); + break; + case TRANSPORT: + if (ips->type == + RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) { + inline_status = + sa_add_address_inline_crypto(sa); + if (inline_status < 0) + return inline_status; } - } else { /* outbound */ - if (sa->cipher_algo == RTE_CRYPTO_CIPHER_NULL) { - sa_ctx->xf[idx].a = null_cipher_xf; - sa_ctx->xf[idx].b = null_auth_xf; - } else { - sa_ctx->xf[idx].a = aescbc_enc_xf; - sa_ctx->xf[idx].b = sha1hmac_gen_xf; + break; + } + + if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) { + struct rte_ipsec_session *ips; + iv_length = 16; + + sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AEAD; + sa_ctx->xf[idx].a.aead.algo = sa->aead_algo; + sa_ctx->xf[idx].a.aead.key.data = sa->cipher_key; + sa_ctx->xf[idx].a.aead.key.length = + sa->cipher_key_len; + sa_ctx->xf[idx].a.aead.op = (inbound == 1) ? + RTE_CRYPTO_AEAD_OP_DECRYPT : + RTE_CRYPTO_AEAD_OP_ENCRYPT; + sa_ctx->xf[idx].a.next = NULL; + sa_ctx->xf[idx].a.aead.iv.offset = IV_OFFSET; + sa_ctx->xf[idx].a.aead.iv.length = iv_length; + sa_ctx->xf[idx].a.aead.aad_length = + sa->aad_len + aad_length; + sa_ctx->xf[idx].a.aead.digest_length = + sa->digest_len; + + sa->xforms = &sa_ctx->xf[idx].a; + + ips = ipsec_get_primary_session(sa); + if (ips->type == + RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL || + ips->type == + RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) { + rc = create_inline_session(skt_ctx, sa, ips); + if (rc != 0) { + RTE_LOG(ERR, IPSEC_ESP, + "create_inline_session() failed\n"); + return -EINVAL; + } + } + print_one_sa_rule(sa, inbound); + } else { + switch (sa->cipher_algo) { + case RTE_CRYPTO_CIPHER_NULL: + case RTE_CRYPTO_CIPHER_3DES_CBC: + case RTE_CRYPTO_CIPHER_AES_CBC: + iv_length = sa->iv_len; + break; + case RTE_CRYPTO_CIPHER_AES_CTR: + iv_length = 16; + break; + default: + RTE_LOG(ERR, IPSEC_ESP, + "unsupported cipher algorithm %u\n", + sa->cipher_algo); + return -EINVAL; + } + + if (inbound) { + sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_CIPHER; + sa_ctx->xf[idx].b.cipher.algo = sa->cipher_algo; + sa_ctx->xf[idx].b.cipher.key.data = sa->cipher_key; + sa_ctx->xf[idx].b.cipher.key.length = + sa->cipher_key_len; + sa_ctx->xf[idx].b.cipher.op = + RTE_CRYPTO_CIPHER_OP_DECRYPT; + sa_ctx->xf[idx].b.next = NULL; + sa_ctx->xf[idx].b.cipher.iv.offset = IV_OFFSET; + sa_ctx->xf[idx].b.cipher.iv.length = iv_length; + + sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AUTH; + sa_ctx->xf[idx].a.auth.algo = sa->auth_algo; + sa_ctx->xf[idx].a.auth.key.data = sa->auth_key; + sa_ctx->xf[idx].a.auth.key.length = + sa->auth_key_len; + sa_ctx->xf[idx].a.auth.digest_length = + sa->digest_len; + sa_ctx->xf[idx].a.auth.op = + RTE_CRYPTO_AUTH_OP_VERIFY; + } else { /* outbound */ + sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_CIPHER; + sa_ctx->xf[idx].a.cipher.algo = sa->cipher_algo; + sa_ctx->xf[idx].a.cipher.key.data = sa->cipher_key; + sa_ctx->xf[idx].a.cipher.key.length = + sa->cipher_key_len; + sa_ctx->xf[idx].a.cipher.op = + RTE_CRYPTO_CIPHER_OP_ENCRYPT; + sa_ctx->xf[idx].a.next = NULL; + sa_ctx->xf[idx].a.cipher.iv.offset = IV_OFFSET; + sa_ctx->xf[idx].a.cipher.iv.length = iv_length; + + sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_AUTH; + sa_ctx->xf[idx].b.auth.algo = sa->auth_algo; + sa_ctx->xf[idx].b.auth.key.data = sa->auth_key; + sa_ctx->xf[idx].b.auth.key.length = + sa->auth_key_len; + sa_ctx->xf[idx].b.auth.digest_length = + sa->digest_len; + sa_ctx->xf[idx].b.auth.op = + RTE_CRYPTO_AUTH_OP_GENERATE; } + + sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b; + sa_ctx->xf[idx].b.next = NULL; + sa->xforms = &sa_ctx->xf[idx].a; + + print_one_sa_rule(sa, inbound); } - sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b; - sa_ctx->xf[idx].b.next = NULL; - sa->xforms = &sa_ctx->xf[idx].a; } return 0; @@ -337,110 +1092,407 @@ sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[], static inline int sa_out_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[], - unsigned nb_entries) + uint32_t nb_entries, struct socket_ctx *skt_ctx) { - return sa_add_rules(sa_ctx, entries, nb_entries, 0); + return sa_add_rules(sa_ctx, entries, nb_entries, 0, skt_ctx); } static inline int sa_in_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[], - unsigned nb_entries) + uint32_t nb_entries, struct socket_ctx *skt_ctx) { - return sa_add_rules(sa_ctx, entries, nb_entries, 1); + return sa_add_rules(sa_ctx, entries, nb_entries, 1, skt_ctx); +} + +/* + * helper function, fills parameters that are identical for all SAs + */ +static void +fill_ipsec_app_sa_prm(struct rte_ipsec_sa_prm *prm, + const struct app_sa_prm *app_prm) +{ + memset(prm, 0, sizeof(*prm)); + + prm->flags = app_prm->flags; + prm->ipsec_xform.options.esn = app_prm->enable_esn; + prm->replay_win_sz = app_prm->window_size; +} + +static int +fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss, + const struct rte_ipv4_hdr *v4, struct rte_ipv6_hdr *v6) +{ + int32_t rc; + + /* + * Try to get SPI next proto by searching that SPI in SPD. + * probably not the optimal way, but there seems nothing + * better right now. + */ + rc = get_spi_proto(ss->spi, ss->direction, NULL, NULL); + if (rc < 0) + return rc; + + fill_ipsec_app_sa_prm(prm, &app_sa_prm); + prm->userdata = (uintptr_t)ss; + + /* setup ipsec xform */ + prm->ipsec_xform.spi = ss->spi; + prm->ipsec_xform.salt = ss->salt; + prm->ipsec_xform.direction = ss->direction; + prm->ipsec_xform.proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP; + prm->ipsec_xform.mode = (IS_TRANSPORT(ss->flags)) ? + RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT : + RTE_SECURITY_IPSEC_SA_MODE_TUNNEL; + prm->ipsec_xform.options.ecn = 1; + prm->ipsec_xform.options.copy_dscp = 1; + + if (IS_IP4_TUNNEL(ss->flags)) { + prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV4; + prm->tun.hdr_len = sizeof(*v4); + prm->tun.next_proto = rc; + prm->tun.hdr = v4; + } else if (IS_IP6_TUNNEL(ss->flags)) { + prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV6; + prm->tun.hdr_len = sizeof(*v6); + prm->tun.next_proto = rc; + prm->tun.hdr = v6; + } else { + /* transport mode */ + prm->trs.proto = rc; + } + + /* setup crypto section */ + prm->crypto_xform = ss->xforms; + return 0; +} + +static int +fill_ipsec_session(struct rte_ipsec_session *ss, struct rte_ipsec_sa *sa) +{ + int32_t rc = 0; + + ss->sa = sa; + + if (ss->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO || + ss->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) { + if (ss->security.ses != NULL) { + rc = rte_ipsec_session_prepare(ss); + if (rc != 0) + memset(ss, 0, sizeof(*ss)); + } + } + + return rc; +} + +/* + * Initialise related rte_ipsec_sa object. + */ +static int +ipsec_sa_init(struct ipsec_sa *lsa, struct rte_ipsec_sa *sa, uint32_t sa_size) +{ + int rc; + struct rte_ipsec_sa_prm prm; + struct rte_ipsec_session *ips; + struct rte_ipv4_hdr v4 = { + .version_ihl = IPVERSION << 4 | + sizeof(v4) / RTE_IPV4_IHL_MULTIPLIER, + .time_to_live = IPDEFTTL, + .next_proto_id = IPPROTO_ESP, + .src_addr = lsa->src.ip.ip4, + .dst_addr = lsa->dst.ip.ip4, + }; + struct rte_ipv6_hdr v6 = { + .vtc_flow = htonl(IP6_VERSION << 28), + .proto = IPPROTO_ESP, + }; + + if (IS_IP6_TUNNEL(lsa->flags)) { + memcpy(v6.src_addr, lsa->src.ip.ip6.ip6_b, sizeof(v6.src_addr)); + memcpy(v6.dst_addr, lsa->dst.ip.ip6.ip6_b, sizeof(v6.dst_addr)); + } + + rc = fill_ipsec_sa_prm(&prm, lsa, &v4, &v6); + if (rc == 0) + rc = rte_ipsec_sa_init(sa, &prm, sa_size); + if (rc < 0) + return rc; + + /* init primary processing session */ + ips = ipsec_get_primary_session(lsa); + rc = fill_ipsec_session(ips, sa); + if (rc != 0) + return rc; + + /* init inline fallback processing session */ + if (lsa->fallback_sessions == 1) + rc = fill_ipsec_session(ipsec_get_fallback_session(lsa), sa); + + return rc; +} + +/* + * Allocate space and init rte_ipsec_sa strcutures, + * one per session. + */ +static int +ipsec_satbl_init(struct sa_ctx *ctx, const struct ipsec_sa *ent, + uint32_t nb_ent, int32_t socket) +{ + int32_t rc, sz; + uint32_t i, idx; + size_t tsz; + struct rte_ipsec_sa *sa; + struct ipsec_sa *lsa; + struct rte_ipsec_sa_prm prm; + + /* determine SA size */ + idx = SPI2IDX(ent[0].spi); + fill_ipsec_sa_prm(&prm, ctx->sa + idx, NULL, NULL); + sz = rte_ipsec_sa_size(&prm); + if (sz < 0) { + RTE_LOG(ERR, IPSEC, "%s(%p, %u, %d): " + "failed to determine SA size, error code: %d\n", + __func__, ctx, nb_ent, socket, sz); + return sz; + } + + tsz = sz * nb_ent; + + ctx->satbl = rte_zmalloc_socket(NULL, tsz, RTE_CACHE_LINE_SIZE, socket); + if (ctx->satbl == NULL) { + RTE_LOG(ERR, IPSEC, + "%s(%p, %u, %d): failed to allocate %zu bytes\n", + __func__, ctx, nb_ent, socket, tsz); + return -ENOMEM; + } + + rc = 0; + for (i = 0; i != nb_ent && rc == 0; i++) { + + idx = SPI2IDX(ent[i].spi); + + sa = (struct rte_ipsec_sa *)((uintptr_t)ctx->satbl + sz * i); + lsa = ctx->sa + idx; + + rc = ipsec_sa_init(lsa, sa, sz); + } + + return rc; +} + +/* + * Walk through all SA rules to find an SA with given SPI + */ +int +sa_spi_present(uint32_t spi, int inbound) +{ + uint32_t i, num; + const struct ipsec_sa *sar; + + if (inbound != 0) { + sar = sa_in; + num = nb_sa_in; + } else { + sar = sa_out; + num = nb_sa_out; + } + + for (i = 0; i != num; i++) { + if (sar[i].spi == spi) + return i; + } + + return -ENOENT; } void -sa_init(struct socket_ctx *ctx, int socket_id, unsigned ep) +sa_init(struct socket_ctx *ctx, int32_t socket_id) { - const struct ipsec_sa *sa_out_entries, *sa_in_entries; - unsigned nb_out_entries, nb_in_entries; + int32_t rc; const char *name; if (ctx == NULL) rte_exit(EXIT_FAILURE, "NULL context.\n"); - if (ctx->sa_ipv4_in != NULL) + if (ctx->sa_in != NULL) rte_exit(EXIT_FAILURE, "Inbound SA DB for socket %u already " "initialized\n", socket_id); - if (ctx->sa_ipv4_out != NULL) + if (ctx->sa_out != NULL) rte_exit(EXIT_FAILURE, "Outbound SA DB for socket %u already " "initialized\n", socket_id); - if (ep == 0) { - sa_out_entries = sa_ep0_out; - nb_out_entries = RTE_DIM(sa_ep0_out); - sa_in_entries = sa_ep0_in; - nb_in_entries = RTE_DIM(sa_ep0_in); - } else if (ep == 1) { - sa_out_entries = sa_ep1_out; - nb_out_entries = RTE_DIM(sa_ep1_out); - sa_in_entries = sa_ep1_in; - nb_in_entries = RTE_DIM(sa_ep1_in); - } else - rte_exit(EXIT_FAILURE, "Invalid EP value %u. " - "Only 0 or 1 supported.\n", ep); + if (nb_sa_in > 0) { + name = "sa_in"; + ctx->sa_in = sa_create(name, socket_id); + if (ctx->sa_in == NULL) + rte_exit(EXIT_FAILURE, "Error [%d] creating SA " + "context %s in socket %d\n", rte_errno, + name, socket_id); - name = "sa_ipv4_in"; - ctx->sa_ipv4_in = sa_ipv4_create(name, socket_id); - if (ctx->sa_ipv4_in == NULL) - rte_exit(EXIT_FAILURE, "Error [%d] creating SA context %s " - "in socket %d\n", rte_errno, name, socket_id); + sa_in_add_rules(ctx->sa_in, sa_in, nb_sa_in, ctx); - name = "sa_ipv4_out"; - ctx->sa_ipv4_out = sa_ipv4_create(name, socket_id); - if (ctx->sa_ipv4_out == NULL) - rte_exit(EXIT_FAILURE, "Error [%d] creating SA context %s " - "in socket %d\n", rte_errno, name, socket_id); + if (app_sa_prm.enable != 0) { + rc = ipsec_satbl_init(ctx->sa_in, sa_in, nb_sa_in, + socket_id); + if (rc != 0) + rte_exit(EXIT_FAILURE, + "failed to init inbound SAs\n"); + } + } else + RTE_LOG(WARNING, IPSEC, "No SA Inbound rule specified\n"); + + if (nb_sa_out > 0) { + name = "sa_out"; + ctx->sa_out = sa_create(name, socket_id); + if (ctx->sa_out == NULL) + rte_exit(EXIT_FAILURE, "Error [%d] creating SA " + "context %s in socket %d\n", rte_errno, + name, socket_id); - sa_in_add_rules(ctx->sa_ipv4_in, sa_in_entries, nb_in_entries); + sa_out_add_rules(ctx->sa_out, sa_out, nb_sa_out, ctx); - sa_out_add_rules(ctx->sa_ipv4_out, sa_out_entries, nb_out_entries); + if (app_sa_prm.enable != 0) { + rc = ipsec_satbl_init(ctx->sa_out, sa_out, nb_sa_out, + socket_id); + if (rc != 0) + rte_exit(EXIT_FAILURE, + "failed to init outbound SAs\n"); + } + } else + RTE_LOG(WARNING, IPSEC, "No SA Outbound rule " + "specified\n"); } int inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx) { struct ipsec_mbuf_metadata *priv; + struct ipsec_sa *sa; - priv = RTE_PTR_ADD(m, sizeof(struct rte_mbuf)); + priv = get_priv(m); + sa = priv->sa; + if (sa != NULL) + return (sa_ctx->sa[sa_idx].spi == sa->spi); - return (sa_ctx->sa[sa_idx].spi == priv->sa->spi); + RTE_LOG(ERR, IPSEC, "SA not saved in private data\n"); + return 0; } -void -inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[], - struct ipsec_sa *sa[], uint16_t nb_pkts) +static inline void +single_inbound_lookup(struct ipsec_sa *sadb, struct rte_mbuf *pkt, + void **sa_ret) { - unsigned i; - uint32_t *src, spi; + struct rte_esp_hdr *esp; + struct ip *ip; + uint32_t *src4_addr; + uint8_t *src6_addr; + struct ipsec_sa *sa; + void *result_sa; - for (i = 0; i < nb_pkts; i++) { - spi = rte_pktmbuf_mtod_offset(pkts[i], struct esp_hdr *, - sizeof(struct ip))->spi; + *sa_ret = NULL; - if (spi == INVALID_SPI) - continue; + ip = rte_pktmbuf_mtod(pkt, struct ip *); + esp = rte_pktmbuf_mtod_offset(pkt, struct rte_esp_hdr *, pkt->l3_len); - sa[i] = &sa_ctx->sa[SPI2IDX(spi)]; - if (spi != sa[i]->spi) { - sa[i] = NULL; - continue; - } + if (esp->spi == INVALID_SPI) + return; - src = rte_pktmbuf_mtod_offset(pkts[i], uint32_t *, - offsetof(struct ip, ip_src)); - if ((sa[i]->src != *src) || (sa[i]->dst != *(src + 1))) - sa[i] = NULL; + result_sa = sa = &sadb[SPI2IDX(rte_be_to_cpu_32(esp->spi))]; + if (rte_be_to_cpu_32(esp->spi) != sa->spi) + return; + + /* + * Mark need for inline offload fallback on the LSB of SA pointer. + * Thanks to packet grouping mechanism which ipsec_process is using + * packets marked for fallback processing will form separate group. + * + * Because it is not safe to use SA pointer it is casted to generic + * pointer to prevent from unintentional use. Use ipsec_mask_saptr + * to get valid struct pointer. + */ + if (MBUF_NO_SEC_OFFLOAD(pkt) && sa->fallback_sessions > 0) { + uintptr_t intsa = (uintptr_t)sa; + intsa |= IPSEC_SA_OFFLOAD_FALLBACK_FLAG; + result_sa = (void *)intsa; } + + switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) { + case IP4_TUNNEL: + src4_addr = RTE_PTR_ADD(ip, offsetof(struct ip, ip_src)); + if ((ip->ip_v == IPVERSION) && + (sa->src.ip.ip4 == *src4_addr) && + (sa->dst.ip.ip4 == *(src4_addr + 1))) + *sa_ret = result_sa; + break; + case IP6_TUNNEL: + src6_addr = RTE_PTR_ADD(ip, offsetof(struct ip6_hdr, ip6_src)); + if ((ip->ip_v == IP6_VERSION) && + !memcmp(&sa->src.ip.ip6.ip6, src6_addr, 16) && + !memcmp(&sa->dst.ip.ip6.ip6, src6_addr + 16, 16)) + *sa_ret = result_sa; + break; + case TRANSPORT: + *sa_ret = result_sa; + } +} + +void +inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[], + void *sa[], uint16_t nb_pkts) +{ + uint32_t i; + + for (i = 0; i < nb_pkts; i++) + single_inbound_lookup(sa_ctx->sa, pkts[i], &sa[i]); } void outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[], - struct ipsec_sa *sa[], uint16_t nb_pkts) + void *sa[], uint16_t nb_pkts) { - unsigned i; + uint32_t i; for (i = 0; i < nb_pkts; i++) sa[i] = &sa_ctx->sa[sa_idx[i]]; } + +/* + * Select HW offloads to be used. + */ +int +sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads, + uint64_t *tx_offloads) +{ + struct ipsec_sa *rule; + uint32_t idx_sa; + enum rte_security_session_action_type rule_type; + + *rx_offloads = 0; + *tx_offloads = 0; + + /* Check for inbound rules that use offloads and use this port */ + for (idx_sa = 0; idx_sa < nb_sa_in; idx_sa++) { + rule = &sa_in[idx_sa]; + rule_type = ipsec_get_action_type(rule); + if ((rule_type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO || + rule_type == + RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) + && rule->portid == port_id) + *rx_offloads |= DEV_RX_OFFLOAD_SECURITY; + } + + /* Check for outbound rules that use offloads and use this port */ + for (idx_sa = 0; idx_sa < nb_sa_out; idx_sa++) { + rule = &sa_out[idx_sa]; + rule_type = ipsec_get_action_type(rule); + if ((rule_type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO || + rule_type == + RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) + && rule->portid == port_id) + *tx_offloads |= DEV_TX_OFFLOAD_SECURITY; + } + return 0; +}