diff options
Diffstat (limited to 'src/vnet/ipsec/ipsec_output.c')
| -rw-r--r-- | src/vnet/ipsec/ipsec_output.c | 147 |
1 files changed, 2 insertions, 145 deletions
diff --git a/src/vnet/ipsec/ipsec_output.c b/src/vnet/ipsec/ipsec_output.c index 760d0921f67..d2eb412bb18 100644 --- a/src/vnet/ipsec/ipsec_output.c +++ b/src/vnet/ipsec/ipsec_output.c @@ -21,6 +21,7 @@ #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/ipsec_io.h> +#include <vnet/ipsec/ipsec_output.h> #define foreach_ipsec_output_error \ _(RX_PKTS, "IPSec pkts received") \ @@ -63,151 +64,6 @@ format_ipsec_output_trace (u8 * s, va_list * args) return s; } -always_inline void -ipsec4_out_spd_add_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra, - u16 lp, u16 rp, u32 pol_id) -{ - u64 hash; - u8 overwrite = 0, stale_overwrite = 0; - ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la, - (ip4_address_t) ra }, - .port = { lp, rp }, - .proto = pr }; - - ip4_5tuple.kv_16_8.value = (((u64) pol_id) << 32) | ((u64) im->epoch_count); - - hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8); - hash &= (im->ipsec4_out_spd_hash_num_buckets - 1); - - ipsec_spinlock_lock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock); - /* Check if we are overwriting an existing entry so we know - whether to increment the flow cache counter. Since flow - cache counter is reset on any policy add/remove, but - hash table values are not, we also need to check if the entry - we are overwriting is stale or not. If it's a stale entry - overwrite, we still want to increment flow cache counter */ - overwrite = (im->ipsec4_out_spd_hash_tbl[hash].value != 0); - /* Check for stale entry by comparing with current epoch count */ - if (PREDICT_FALSE (overwrite)) - stale_overwrite = - (im->epoch_count != - ((u32) (im->ipsec4_out_spd_hash_tbl[hash].value & 0xFFFFFFFF))); - clib_memcpy_fast (&im->ipsec4_out_spd_hash_tbl[hash], &ip4_5tuple.kv_16_8, - sizeof (ip4_5tuple.kv_16_8)); - ipsec_spinlock_unlock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock); - - /* Increment the counter to track active flow cache entries - when entering a fresh entry or overwriting a stale one */ - if (!overwrite || stale_overwrite) - clib_atomic_fetch_add_relax (&im->ipsec4_out_spd_flow_cache_entries, 1); - - return; -} - -always_inline ipsec_policy_t * -ipsec4_out_spd_find_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra, - u16 lp, u16 rp) -{ - ipsec_policy_t *p = NULL; - ipsec4_hash_kv_16_8_t kv_result; - u64 hash; - - if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) && - (pr != IP_PROTOCOL_SCTP))) - { - lp = 0; - rp = 0; - } - ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la, - (ip4_address_t) ra }, - .port = { lp, rp }, - .proto = pr }; - - hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8); - hash &= (im->ipsec4_out_spd_hash_num_buckets - 1); - - ipsec_spinlock_lock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock); - kv_result = im->ipsec4_out_spd_hash_tbl[hash]; - ipsec_spinlock_unlock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock); - - if (ipsec4_hash_key_compare_16_8 ((u64 *) &ip4_5tuple.kv_16_8, - (u64 *) &kv_result)) - { - if (im->epoch_count == ((u32) (kv_result.value & 0xFFFFFFFF))) - { - /* Get the policy based on the index */ - p = - pool_elt_at_index (im->policies, ((u32) (kv_result.value >> 32))); - } - } - - return p; -} - -always_inline ipsec_policy_t * -ipsec_output_policy_match (ipsec_spd_t *spd, u8 pr, u32 la, u32 ra, u16 lp, - u16 rp, u8 flow_cache_enabled) -{ - ipsec_main_t *im = &ipsec_main; - ipsec_policy_t *p; - u32 *i; - - if (!spd) - return 0; - - vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP4_OUTBOUND]) - { - p = pool_elt_at_index (im->policies, *i); - if (PREDICT_FALSE ((p->protocol != IPSEC_POLICY_PROTOCOL_ANY) && - (p->protocol != pr))) - continue; - - if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32)) - continue; - - if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32)) - continue; - - if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32)) - continue; - - if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32)) - continue; - - if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) && - (pr != IP_PROTOCOL_SCTP))) - { - lp = 0; - rp = 0; - goto add_flow_cache; - } - - if (lp < p->lport.start) - continue; - - if (lp > p->lport.stop) - continue; - - if (rp < p->rport.start) - continue; - - if (rp > p->rport.stop) - continue; - - add_flow_cache: - if (flow_cache_enabled) - { - /* Add an Entry in Flow cache */ - ipsec4_out_spd_add_flow_cache_entry ( - im, pr, clib_host_to_net_u32 (la), clib_host_to_net_u32 (ra), - clib_host_to_net_u16 (lp), clib_host_to_net_u16 (rp), *i); - } - - return p; - } - return 0; -} - always_inline uword ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, ip6_address_t * ua) @@ -225,6 +81,7 @@ ipsec6_output_policy_match (ipsec_spd_t * spd, { ipsec_main_t *im = &ipsec_main; ipsec_policy_t *p; + u32 *i; if (!spd) |