diff options
Diffstat (limited to 'src/vnet/bfd/bfd_main.c')
| -rw-r--r-- | src/vnet/bfd/bfd_main.c | 129 |
1 files changed, 42 insertions, 87 deletions
diff --git a/src/vnet/bfd/bfd_main.c b/src/vnet/bfd/bfd_main.c index 9e575afcaca..c67317f5789 100644 --- a/src/vnet/bfd/bfd_main.c +++ b/src/vnet/bfd/bfd_main.c @@ -17,14 +17,6 @@ * @brief BFD nodes implementation */ -#if WITH_LIBSSL > 0 -#include <openssl/sha.h> -#endif - -#if __SSE4_2__ -#include <x86intrin.h> -#endif - #include <vlibmemory/api.h> #include <vppinfra/random.h> #include <vppinfra/error.h> @@ -36,6 +28,7 @@ #include <vnet/bfd/bfd_protocol.h> #include <vnet/bfd/bfd_main.h> #include <vlib/log.h> +#include <vnet/crypto/crypto.h> static u64 bfd_calc_echo_checksum (u32 discriminator, u64 expire_time, u32 secret) @@ -784,9 +777,9 @@ bfd_transport_echo (vlib_main_t * vm, u32 bi, bfd_session_t * bs) return 0; } -#if WITH_LIBSSL > 0 static void -bfd_add_sha1_auth_section (vlib_buffer_t * b, bfd_session_t * bs) +bfd_add_sha1_auth_section (vlib_main_t *vm, vlib_buffer_t *b, + bfd_session_t *bs) { bfd_pkt_with_sha1_auth_t *pkt = vlib_buffer_get_current (b); bfd_auth_sha1_t *auth = &pkt->sha1_auth; @@ -810,14 +803,19 @@ bfd_add_sha1_auth_section (vlib_buffer_t * b, bfd_session_t * bs) clib_memcpy (auth->hash, bs->auth.curr_key->key, sizeof (bs->auth.curr_key->key)); unsigned char hash[sizeof (auth->hash)]; - SHA1 ((unsigned char *) pkt, sizeof (*pkt), hash); + + vnet_crypto_op_t op; + vnet_crypto_op_init (&op, VNET_CRYPTO_OP_SHA1_HASH); + op.src = (u8 *) pkt; + op.len = sizeof (*pkt); + op.digest = hash; + vnet_crypto_process_ops (vm, &op, 1); BFD_DBG ("hashing: %U", format_hex_bytes, pkt, sizeof (*pkt)); clib_memcpy (auth->hash, hash, sizeof (hash)); } -#endif static void -bfd_add_auth_section (vlib_buffer_t * b, bfd_session_t * bs) +bfd_add_auth_section (vlib_main_t *vm, vlib_buffer_t *b, bfd_session_t *bs) { bfd_main_t *bm = &bfd_main; if (bs->auth.curr_key) @@ -836,21 +834,11 @@ bfd_add_auth_section (vlib_buffer_t * b, bfd_session_t * bs) "internal error, unexpected BFD auth type '%d'", auth_type); break; -#if WITH_LIBSSL > 0 - case BFD_AUTH_TYPE_keyed_sha1: - /* fallthrough */ - case BFD_AUTH_TYPE_meticulous_keyed_sha1: - bfd_add_sha1_auth_section (b, bs); - break; -#else case BFD_AUTH_TYPE_keyed_sha1: /* fallthrough */ case BFD_AUTH_TYPE_meticulous_keyed_sha1: - vlib_log_crit (bm->log_class, - "internal error, unexpected BFD auth type '%d'", - auth_type); + bfd_add_sha1_auth_section (vm, b, bs); break; -#endif } } } @@ -1016,7 +1004,7 @@ bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt, /* fallthrough */ break; } - bfd_add_auth_section (b, bs); + bfd_add_auth_section (vm, b, bs); bfd_add_transport_layer (vm, bi, bs); if (!bfd_transport_control_frame (vm, bi, bs)) { @@ -1041,7 +1029,7 @@ bfd_init_final_control_frame (vlib_main_t * vm, vlib_buffer_t * b, BFD_DBG ("Send final control frame for bs_idx=%lu", bs->bs_idx); bfd_init_control_frame (bm, bs, b); bfd_pkt_set_final (vlib_buffer_get_current (b)); - bfd_add_auth_section (b, bs); + bfd_add_auth_section (vm, b, bs); u32 bi = vlib_get_buffer_index (vm, b); bfd_add_transport_layer (vm, bi, bs); bs->last_tx_nsec = bfd_time_now_nsec (vm, NULL); @@ -1592,14 +1580,13 @@ bfd_verify_pkt_auth_seq_num (vlib_main_t * vm, bfd_session_t * bs, } static int -bfd_verify_pkt_auth_key_sha1 (const bfd_pkt_t * pkt, u32 pkt_size, - bfd_session_t * bs, u8 bfd_key_id, - bfd_auth_key_t * auth_key) +bfd_verify_pkt_auth_key_sha1 (vlib_main_t *vm, const bfd_pkt_t *pkt, + u32 pkt_size, bfd_session_t *bs, u8 bfd_key_id, + bfd_auth_key_t *auth_key) { ASSERT (auth_key->auth_type == BFD_AUTH_TYPE_keyed_sha1 || auth_key->auth_type == BFD_AUTH_TYPE_meticulous_keyed_sha1); - u8 result[SHA_DIGEST_LENGTH]; bfd_pkt_with_common_auth_t *with_common = (void *) pkt; if (pkt_size < sizeof (*with_common)) { @@ -1634,36 +1621,29 @@ bfd_verify_pkt_auth_key_sha1 (const bfd_pkt_t * pkt, u32 pkt_size, auth.is_delayed ? " (but a delayed auth change is scheduled)" : ""); return 0; } - SHA_CTX ctx; - if (!SHA1_Init (&ctx)) - { - BFD_ERR ("SHA1_Init failed"); - return 0; - } - /* ignore last 20 bytes - use the actual key data instead pkt data */ - if (!SHA1_Update (&ctx, with_sha1, - sizeof (*with_sha1) - sizeof (with_sha1->sha1_auth.hash))) - { - BFD_ERR ("SHA1_Update failed"); - return 0; - } - if (!SHA1_Update (&ctx, auth_key->key, sizeof (auth_key->key))) - { - BFD_ERR ("SHA1_Update failed"); - return 0; - } - if (!SHA1_Final (result, &ctx)) - { - BFD_ERR ("SHA1_Final failed"); - return 0; - } - if (0 == memcmp (result, with_sha1->sha1_auth.hash, SHA_DIGEST_LENGTH)) - { + + u8 hash_from_packet[STRUCT_SIZE_OF (bfd_auth_sha1_t, hash)]; + u8 calculated_hash[STRUCT_SIZE_OF (bfd_auth_sha1_t, hash)]; + clib_memcpy (hash_from_packet, with_sha1->sha1_auth.hash, + sizeof (with_sha1->sha1_auth.hash)); + clib_memcpy (with_sha1->sha1_auth.hash, auth_key->key, + sizeof (auth_key->key)); + vnet_crypto_op_t op; + vnet_crypto_op_init (&op, VNET_CRYPTO_OP_SHA1_HASH); + op.src = (u8 *) with_sha1; + op.len = sizeof (*with_sha1); + op.digest = calculated_hash; + vnet_crypto_process_ops (vm, &op, 1); + if (0 == + memcmp (calculated_hash, hash_from_packet, sizeof (calculated_hash))) + { + clib_memcpy (with_sha1->sha1_auth.hash, hash_from_packet, + sizeof (hash_from_packet)); return 1; } BFD_ERR ("SHA1 hash: %U doesn't match the expected value: %U", - format_hex_bytes, with_sha1->sha1_auth.hash, SHA_DIGEST_LENGTH, - format_hex_bytes, result, SHA_DIGEST_LENGTH); + format_hex_bytes, hash_from_packet, sizeof (hash_from_packet), + format_hex_bytes, calculated_hash, sizeof (calculated_hash)); return 0; } @@ -1698,25 +1678,18 @@ bfd_verify_pkt_auth_key (vlib_main_t * vm, const bfd_pkt_t * pkt, case BFD_AUTH_TYPE_keyed_sha1: /* fallthrough */ case BFD_AUTH_TYPE_meticulous_keyed_sha1: -#if WITH_LIBSSL > 0 do { const u32 seq_num = clib_net_to_host_u32 (((bfd_pkt_with_sha1_auth_t *) pkt)-> sha1_auth.seq_num); - return bfd_verify_pkt_auth_seq_num (vm, bs, seq_num, - bfd_auth_type_is_meticulous - (auth_key->auth_type)) - && bfd_verify_pkt_auth_key_sha1 (pkt, pkt_size, bs, bfd_key_id, - auth_key); + return bfd_verify_pkt_auth_seq_num ( + vm, bs, seq_num, + bfd_auth_type_is_meticulous (auth_key->auth_type)) && + bfd_verify_pkt_auth_key_sha1 (vm, pkt, pkt_size, bs, + bfd_key_id, auth_key); } while (0); -#else - vlib_log_err - (bm->log_class, - "internal error, attempt to use SHA1 without SSL support"); - return 0; -#endif } return 0; } @@ -2082,7 +2055,6 @@ vnet_api_error_t bfd_auth_deactivate (bfd_session_t * bs, u8 is_delayed) { bfd_main_t *bm = &bfd_main; -#if WITH_LIBSSL > 0 if (!is_delayed) { /* not delayed - deactivate the current key right now */ @@ -2113,11 +2085,6 @@ bfd_auth_deactivate (bfd_session_t * bs, u8 is_delayed) vlib_log_info (bm->log_class, "session auth modified: %U", format_bfd_session_brief, bs); return 0; -#else - vlib_log_err (bm->log_class, - "SSL missing, cannot deactivate BFD authentication"); - return VNET_API_ERROR_BFD_NOTSUPP; -#endif } vnet_api_error_t @@ -2187,7 +2154,6 @@ bfd_auth_set_key (u32 conf_key_id, u8 auth_type, u8 key_len, const u8 * key_data) { bfd_main_t *bm = &bfd_main; -#if WITH_LIBSSL > 0 bfd_auth_key_t *auth_key = NULL; if (!key_len || key_len > bfd_max_key_len_for_auth_type (auth_type)) { @@ -2231,17 +2197,11 @@ bfd_auth_set_key (u32 conf_key_id, u8 auth_type, u8 key_len, clib_memset (auth_key->key, 0, sizeof (auth_key->key)); clib_memcpy (auth_key->key, key_data, key_len); return 0; -#else - vlib_log_err (bm->log_class, - "SSL missing, cannot manipulate authentication keys"); - return VNET_API_ERROR_BFD_NOTSUPP; -#endif } vnet_api_error_t bfd_auth_del_key (u32 conf_key_id) { -#if WITH_LIBSSL > 0 bfd_auth_key_t *auth_key = NULL; bfd_main_t *bm = &bfd_main; uword *key_idx_p = hash_get (bm->auth_key_by_conf_key_id, conf_key_id); @@ -2271,11 +2231,6 @@ bfd_auth_del_key (u32 conf_key_id) return VNET_API_ERROR_BFD_ENOENT; } return 0; -#else - vlib_log_err (bm->log_class, - "SSL missing, cannot manipulate authentication keys"); - return VNET_API_ERROR_BFD_NOTSUPP; -#endif } bfd_main_t bfd_main; |