X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_sa.c;h=0a24aa2c8c06725c2b754b2edbf47735596110a6;hb=c7eaa711f;hp=f60566cba79e6cd020512812a3b7266dd174a604;hpb=f539578bac8b64886b57c460c9d74273e6613f8b;p=vpp.git diff --git a/src/vnet/ipsec/ipsec_sa.c b/src/vnet/ipsec/ipsec_sa.c index f60566cba79..0a24aa2c8c0 100644 --- a/src/vnet/ipsec/ipsec_sa.c +++ b/src/vnet/ipsec/ipsec_sa.c @@ -15,7 +15,7 @@ #include #include -#include +#include #include #include #include @@ -72,15 +72,9 @@ static void ipsec_sa_stack (ipsec_sa_t * sa) { ipsec_main_t *im = &ipsec_main; - fib_forward_chain_type_t fct; dpo_id_t tmp = DPO_INVALID; - fct = - fib_forw_chain_type_from_fib_proto ((ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? - FIB_PROTOCOL_IP6 : - FIB_PROTOCOL_IP4)); - - fib_entry_contribute_forwarding (sa->fib_entry_index, fct, &tmp); + tunnel_contribute_forwarding (&sa->tunnel, &tmp); if (IPSEC_PROTOCOL_AH == sa->protocol) dpo_stack_from_node ((ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? @@ -99,17 +93,22 @@ ipsec_sa_set_crypto_alg (ipsec_sa_t * sa, ipsec_crypto_alg_t crypto_alg) ipsec_main_t *im = &ipsec_main; sa->crypto_alg = crypto_alg; sa->crypto_iv_size = im->crypto_algs[crypto_alg].iv_size; - sa->crypto_block_size = im->crypto_algs[crypto_alg].block_size; + sa->esp_block_align = clib_max (4, im->crypto_algs[crypto_alg].block_align); sa->sync_op_data.crypto_enc_op_id = im->crypto_algs[crypto_alg].enc_op_id; sa->sync_op_data.crypto_dec_op_id = im->crypto_algs[crypto_alg].dec_op_id; sa->crypto_calg = im->crypto_algs[crypto_alg].alg; ASSERT (sa->crypto_iv_size <= ESP_MAX_IV_SIZE); - ASSERT (sa->crypto_block_size <= ESP_MAX_BLOCK_SIZE); + ASSERT (sa->esp_block_align <= ESP_MAX_BLOCK_SIZE); if (IPSEC_CRYPTO_ALG_IS_GCM (crypto_alg)) { sa->integ_icv_size = im->crypto_algs[crypto_alg].icv_size; + ipsec_sa_set_IS_CTR (sa); ipsec_sa_set_IS_AEAD (sa); } + else if (IPSEC_CRYPTO_ALG_IS_CTR (crypto_alg)) + { + ipsec_sa_set_IS_CTR (sa); + } } void @@ -167,19 +166,11 @@ ipsec_sa_set_async_op_ids (ipsec_sa_t * sa) } int -ipsec_sa_add_and_lock (u32 id, - u32 spi, - ipsec_protocol_t proto, - ipsec_crypto_alg_t crypto_alg, - const ipsec_key_t * ck, - ipsec_integ_alg_t integ_alg, - const ipsec_key_t * ik, - ipsec_sa_flags_t flags, - u32 tx_table_id, - u32 salt, - const ip46_address_t * tun_src, - const ip46_address_t * tun_dst, u32 * sa_out_index, - u16 dst_port) +ipsec_sa_add_and_lock (u32 id, u32 spi, ipsec_protocol_t proto, + ipsec_crypto_alg_t crypto_alg, const ipsec_key_t *ck, + ipsec_integ_alg_t integ_alg, const ipsec_key_t *ik, + ipsec_sa_flags_t flags, u32 salt, u16 src_port, + u16 dst_port, const tunnel_t *tun, u32 *sa_out_index) { vlib_main_t *vm = vlib_get_main (); ipsec_main_t *im = &ipsec_main; @@ -187,6 +178,7 @@ ipsec_sa_add_and_lock (u32 id, ipsec_sa_t *sa; u32 sa_index; uword *p; + int rv; p = hash_get (im->sa_index_by_sa_id, id); if (p) @@ -201,14 +193,14 @@ ipsec_sa_add_and_lock (u32 id, vlib_validate_combined_counter (&ipsec_sa_counters, sa_index); vlib_zero_combined_counter (&ipsec_sa_counters, sa_index); + tunnel_copy (tun, &sa->tunnel); sa->id = id; sa->spi = spi; sa->stat_index = sa_index; sa->protocol = proto; sa->flags = flags; sa->salt = salt; - sa->encrypt_thread_index = (vlib_num_workers ())? ~0 : 0; - sa->decrypt_thread_index = (vlib_num_workers ())? ~0 : 0; + sa->thread_index = (vlib_num_workers ()) ? ~0 : 0; if (integ_alg != IPSEC_INTEG_ALG_NONE) { ipsec_sa_set_integ_alg (sa, integ_alg); @@ -218,8 +210,6 @@ ipsec_sa_add_and_lock (u32 id, ipsec_sa_set_async_op_ids (sa); clib_memcpy (&sa->crypto_key, ck, sizeof (sa->crypto_key)); - ip46_address_copy (&sa->tunnel_src_addr, tun_src); - ip46_address_copy (&sa->tunnel_dst_addr, tun_dst); sa->crypto_key_index = vnet_crypto_key_add (vm, im->crypto_algs[crypto_alg].alg, @@ -273,71 +263,50 @@ ipsec_sa_add_and_lock (u32 id, if (ipsec_sa_is_set_IS_TUNNEL (sa) && !ipsec_sa_is_set_IS_INBOUND (sa)) { - fib_protocol_t fproto = (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? - FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4); - fib_prefix_t pfx = { - .fp_addr = sa->tunnel_dst_addr, - .fp_len = (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? 128 : 32), - .fp_proto = fproto, - }; - sa->tx_fib_index = fib_table_find (fproto, tx_table_id); - if (sa->tx_fib_index == ~((u32) 0)) + sa->tunnel_flags = sa->tunnel.t_encap_decap_flags; + + rv = tunnel_resolve (&sa->tunnel, FIB_NODE_TYPE_IPSEC_SA, sa_index); + + if (rv) { pool_put (im->sad, sa); - return VNET_API_ERROR_NO_SUCH_FIB; + return rv; } - - sa->fib_entry_index = fib_entry_track (sa->tx_fib_index, - &pfx, - FIB_NODE_TYPE_IPSEC_SA, - sa_index, &sa->sibling); ipsec_sa_stack (sa); /* generate header templates */ if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa)) { - sa->ip6_hdr.ip_version_traffic_class_and_flow_label = 0x60; - sa->ip6_hdr.hop_limit = 254; - sa->ip6_hdr.src_address.as_u64[0] = - sa->tunnel_src_addr.ip6.as_u64[0]; - sa->ip6_hdr.src_address.as_u64[1] = - sa->tunnel_src_addr.ip6.as_u64[1]; - sa->ip6_hdr.dst_address.as_u64[0] = - sa->tunnel_dst_addr.ip6.as_u64[0]; - sa->ip6_hdr.dst_address.as_u64[1] = - sa->tunnel_dst_addr.ip6.as_u64[1]; - if (ipsec_sa_is_set_UDP_ENCAP (sa)) - sa->ip6_hdr.protocol = IP_PROTOCOL_UDP; - else - sa->ip6_hdr.protocol = IP_PROTOCOL_IPSEC_ESP; + tunnel_build_v6_hdr (&sa->tunnel, + (ipsec_sa_is_set_UDP_ENCAP (sa) ? + IP_PROTOCOL_UDP : + IP_PROTOCOL_IPSEC_ESP), + &sa->ip6_hdr); } else { - sa->ip4_hdr.ip_version_and_header_length = 0x45; - sa->ip4_hdr.ttl = 254; - sa->ip4_hdr.src_address.as_u32 = sa->tunnel_src_addr.ip4.as_u32; - sa->ip4_hdr.dst_address.as_u32 = sa->tunnel_dst_addr.ip4.as_u32; - - if (ipsec_sa_is_set_UDP_ENCAP (sa)) - sa->ip4_hdr.protocol = IP_PROTOCOL_UDP; - else - sa->ip4_hdr.protocol = IP_PROTOCOL_IPSEC_ESP; - sa->ip4_hdr.checksum = ip4_header_checksum (&sa->ip4_hdr); + tunnel_build_v4_hdr (&sa->tunnel, + (ipsec_sa_is_set_UDP_ENCAP (sa) ? + IP_PROTOCOL_UDP : + IP_PROTOCOL_IPSEC_ESP), + &sa->ip4_hdr); } } if (ipsec_sa_is_set_UDP_ENCAP (sa)) { if (dst_port == IPSEC_UDP_PORT_NONE) - { - sa->udp_hdr.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); - sa->udp_hdr.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); - } + sa->udp_hdr.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); else - { - sa->udp_hdr.src_port = clib_host_to_net_u16 (dst_port); - sa->udp_hdr.dst_port = clib_host_to_net_u16 (dst_port); - } + sa->udp_hdr.dst_port = clib_host_to_net_u16 (dst_port); + + if (src_port == IPSEC_UDP_PORT_NONE) + sa->udp_hdr.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); + else + sa->udp_hdr.src_port = clib_host_to_net_u16 (src_port); + + if (ipsec_sa_is_set_IS_INBOUND (sa)) + ipsec_register_udp_port (clib_host_to_net_u16 (sa->udp_hdr.dst_port)); } hash_set (im->sa_index_by_sa_id, sa->id, sa_index); @@ -357,15 +326,16 @@ ipsec_sa_del (ipsec_sa_t * sa) sa_index = sa - im->sad; hash_unset (im->sa_index_by_sa_id, sa->id); + tunnel_unresolve (&sa->tunnel); /* no recovery possible when deleting an SA */ (void) ipsec_call_add_del_callbacks (im, sa, sa_index, 0); + if (ipsec_sa_is_set_UDP_ENCAP (sa) && ipsec_sa_is_set_IS_INBOUND (sa)) + ipsec_unregister_udp_port (clib_net_to_host_u16 (sa->udp_hdr.dst_port)); + if (ipsec_sa_is_set_IS_TUNNEL (sa) && !ipsec_sa_is_set_IS_INBOUND (sa)) - { - fib_entry_untrack (sa->fib_entry_index, sa->sibling); - dpo_reset (&sa->dpo); - } + dpo_reset (&sa->dpo); vnet_crypto_key_del (vm, sa->crypto_key_index); if (sa->integ_alg != IPSEC_INTEG_ALG_NONE) vnet_crypto_key_del (vm, sa->integ_key_index); @@ -448,11 +418,11 @@ ipsec_sa_walk (ipsec_sa_walk_cb_t cb, void *ctx) ipsec_sa_t *sa; /* *INDENT-OFF* */ - pool_foreach (sa, im->sad, - ({ + pool_foreach (sa, im->sad) + { if (WALK_CONTINUE != cb(sa, ctx)) break; - })); + } /* *INDENT-ON* */ }