#include <vnet/ipsec/ah.h>
#include <vnet/ipsec/ipsec_io.h>
-#define foreach_ah_decrypt_next \
- _ (DROP, "error-drop") \
- _ (IP4_INPUT, "ip4-input") \
- _ (IP6_INPUT, "ip6-input") \
- _ (IPSEC_GRE_INPUT, "ipsec-gre-input")
+#define foreach_ah_decrypt_next \
+ _(DROP, "error-drop") \
+ _(IP4_INPUT, "ip4-input") \
+ _(IP6_INPUT, "ip6-input") \
+ _(HANDOFF, "handoff")
#define _(v, s) AH_DECRYPT_NEXT_##v,
typedef enum
thread_index, current_sa_index);
}
+ if (PREDICT_FALSE (~0 == sa0->thread_index))
+ {
+ /* this is the first packet to use this SA, claim the SA
+ * for this thread. this could happen simultaneously on
+ * another thread */
+ clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
+ ipsec_sa_assign_thread (thread_index));
+ }
+
+ if (PREDICT_TRUE (thread_index != sa0->thread_index))
+ {
+ vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
+ next[0] = AH_DECRYPT_NEXT_HANDOFF;
+ goto next;
+ }
+
pd->sa_index = current_sa_index;
ih4 = vlib_buffer_get_current (b[0]);
if (is_ip6)
{
ip6_ext_header_t *prev = NULL;
- ip6_ext_header_find_t (ih6, prev, ah0, IP_PROTOCOL_IPSEC_AH);
+ ah0 =
+ ip6_ext_header_find (vm, b[0], ih6, IP_PROTOCOL_IPSEC_AH, &prev);
pd->ip_hdr_size = sizeof (ip6_header_t);
ASSERT ((u8 *) ah0 - (u8 *) ih6 == pd->ip_hdr_size);
}
pd->seq = clib_host_to_net_u32 (ah0->seq_no);
/* anti-replay check */
- if (ipsec_sa_anti_replay_check (sa0, &ah0->seq_no))
+ if (ipsec_sa_anti_replay_check (sa0, pd->seq))
{
b[0]->error = node->errors[AH_DECRYPT_ERROR_REPLAY];
next[0] = AH_DECRYPT_NEXT_DROP;
if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE))
{
- ipsec_sa_anti_replay_advance (sa0, clib_host_to_net_u32 (pd->seq));
+ /* redo the anit-reply check. see esp_decrypt for details */
+ if (ipsec_sa_anti_replay_check (sa0, pd->seq))
+ {
+ b[0]->error = node->errors[AH_DECRYPT_ERROR_REPLAY];
+ next[0] = AH_DECRYPT_NEXT_DROP;
+ goto trace;
+ }
+ ipsec_sa_anti_replay_advance (sa0, pd->seq);
}
u16 ah_hdr_len = sizeof (ah_header_t) + pd->icv_size
}
}
- /* for IPSec-GRE tunnel next node is ipsec-gre-input */
- if (PREDICT_FALSE (ipsec_sa_is_set_IS_GRE (sa0)))
- next[0] = AH_DECRYPT_NEXT_IPSEC_GRE_INPUT;
-
vnet_buffer (b[0])->sw_if_index[VLIB_TX] = (u32) ~ 0;
trace:
if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
.n_next_nodes = AH_DECRYPT_N_NEXT,
.next_nodes = {
-#define _(s,n) [AH_DECRYPT_NEXT_##s] = n,
- foreach_ah_decrypt_next
-#undef _
+ [AH_DECRYPT_NEXT_DROP] = "ip4-drop",
+ [AH_DECRYPT_NEXT_IP4_INPUT] = "ip4-input-no-checksum",
+ [AH_DECRYPT_NEXT_IP6_INPUT] = "ip6-input",
+ [AH_DECRYPT_NEXT_HANDOFF] = "ah4-decrypt-handoff",
},
};
/* *INDENT-ON* */
.n_next_nodes = AH_DECRYPT_N_NEXT,
.next_nodes = {
-#define _(s,n) [AH_DECRYPT_NEXT_##s] = n,
- foreach_ah_decrypt_next
-#undef _
+ [AH_DECRYPT_NEXT_DROP] = "ip6-drop",
+ [AH_DECRYPT_NEXT_IP4_INPUT] = "ip4-input-no-checksum",
+ [AH_DECRYPT_NEXT_IP6_INPUT] = "ip6-input",
+ [AH_DECRYPT_NEXT_HANDOFF] = "ah6-decrypt-handoff",
},
};
/* *INDENT-ON* */