*/
#include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
+#include <vnet/udp/udp.h>
#include <vnet/fib/fib_table.h>
+/**
+ * @brief
+ * SA packet & bytes counters
+ */
+vlib_combined_counter_main_t ipsec_sa_counters = {
+ .name = "SA",
+ .stat_segment_name = "/net/ipsec/sa",
+};
+
+
static clib_error_t *
ipsec_call_add_del_callbacks (ipsec_main_t * im, ipsec_sa_t * sa,
u32 sa_index, int is_add)
fib_forward_chain_type_t fct;
dpo_id_t tmp = DPO_INVALID;
- fct = fib_forw_chain_type_from_fib_proto ((sa->is_tunnel_ip6 ?
- FIB_PROTOCOL_IP6 :
- FIB_PROTOCOL_IP4));
+ 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);
- dpo_stack_from_node ((sa->is_tunnel_ip6 ?
+ dpo_stack_from_node ((ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ?
im->ah6_encrypt_node_index :
im->ah4_encrypt_node_index),
&sa->dpo[IPSEC_PROTOCOL_AH], &tmp);
- dpo_stack_from_node ((sa->is_tunnel_ip6 ?
+ dpo_stack_from_node ((ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ?
im->esp6_encrypt_node_index :
im->esp4_encrypt_node_index),
&sa->dpo[IPSEC_PROTOCOL_ESP], &tmp);
dpo_reset (&tmp);
}
+void
+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->crypto_enc_op_type = im->crypto_algs[crypto_alg].enc_op_type;
+ sa->crypto_dec_op_type = im->crypto_algs[crypto_alg].dec_op_type;
+ ASSERT (sa->crypto_block_size <= ESP_MAX_BLOCK_SIZE);
+}
+
+void
+ipsec_sa_set_integ_alg (ipsec_sa_t * sa, ipsec_integ_alg_t integ_alg)
+{
+ ipsec_main_t *im = &ipsec_main;
+ sa->integ_alg = integ_alg;
+ sa->integ_trunc_size = im->integ_algs[integ_alg].trunc_size;
+ sa->integ_op_type = im->integ_algs[integ_alg].op_type;
+ ASSERT (sa->integ_trunc_size <= ESP_MAX_ICV_SIZE);
+}
+
int
ipsec_sa_add (u32 id,
u32 spi,
if (p)
return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
- pool_get_zero (im->sad, sa);
+ pool_get_aligned_zero (im->sad, sa, CLIB_CACHE_LINE_BYTES);
fib_node_init (&sa->node, FIB_NODE_TYPE_IPSEC_SA);
sa_index = sa - im->sad;
+ vlib_validate_combined_counter (&ipsec_sa_counters, sa_index);
+ vlib_zero_combined_counter (&ipsec_sa_counters, sa_index);
+
sa->id = id;
sa->spi = spi;
+ sa->stat_index = sa_index;
sa->protocol = proto;
- sa->crypto_alg = crypto_alg;
+ ipsec_sa_set_crypto_alg (sa, crypto_alg);
clib_memcpy (&sa->crypto_key, ck, sizeof (sa->crypto_key));
- sa->integ_alg = integ_alg;
+ ipsec_sa_set_integ_alg (sa, integ_alg);
clib_memcpy (&sa->integ_key, ik, sizeof (sa->integ_key));
ip46_address_copy (&sa->tunnel_src_addr, tun_src);
ip46_address_copy (&sa->tunnel_dst_addr, tun_dst);
- if (flags & IPSEC_SA_FLAG_USE_EXTENDED_SEQ_NUM)
- sa->use_esn = 1;
+ if (flags & IPSEC_SA_FLAG_USE_ESN)
+ ipsec_sa_set_USE_ESN (sa);
if (flags & IPSEC_SA_FLAG_USE_ANTI_REPLAY)
- sa->use_anti_replay = 1;
+ ipsec_sa_set_USE_ANTI_REPLAY (sa);
if (flags & IPSEC_SA_FLAG_IS_TUNNEL)
- sa->is_tunnel = 1;
+ ipsec_sa_set_IS_TUNNEL (sa);
if (flags & IPSEC_SA_FLAG_IS_TUNNEL_V6)
- sa->is_tunnel_ip6 = 1;
+ ipsec_sa_set_IS_TUNNEL_V6 (sa);
if (flags & IPSEC_SA_FLAG_UDP_ENCAP)
- sa->udp_encap = 1;
+ ipsec_sa_set_UDP_ENCAP (sa);
err = ipsec_check_support_cb (im, sa);
if (err)
return VNET_API_ERROR_SYSCALL_ERROR_1;
}
- if (sa->is_tunnel)
+ if (ipsec_sa_is_set_IS_TUNNEL (sa))
{
- fib_protocol_t fproto = (sa->is_tunnel_ip6 ?
+ 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 = (sa->is_tunnel_ip6 ? 128 : 32),
+ .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);
sa->sibling = fib_entry_child_add (sa->fib_entry_index,
FIB_NODE_TYPE_IPSEC_SA, sa_index);
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;
+ }
+ 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);
+ }
+ }
+
+ if (ipsec_sa_is_set_UDP_ENCAP (sa))
+ {
+ 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);
}
+
hash_set (im->sa_index_by_sa_id, sa->id, sa_index);
if (sa_out_index)
err = ipsec_call_add_del_callbacks (im, sa, sa_index, 0);
if (err)
return VNET_API_ERROR_SYSCALL_ERROR_1;
- if (sa->is_tunnel)
+
+ if (ipsec_sa_is_set_IS_TUNNEL (sa))
{
fib_entry_child_remove (sa->fib_entry_index, sa->sibling);
fib_table_entry_special_remove
{
err = ipsec_call_add_del_callbacks (im, sa, sa_index, 0);
if (err)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ {
+ clib_error_free (err);
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
+ }
}
return 0;
Code Review / vpp.git / blobdiff