From 684586786e98bc779e269c0d879a2a4d3f1f4bce Mon Sep 17 00:00:00 2001 From: Matus Fabian Date: Mon, 18 Feb 2019 01:54:16 -0800 Subject: NAT44: fix snat_get_worker_out2in_cb (VPP-1536) Change-Id: I9c562f8e3407ca60a4412a162015fa505b7590b6 Signed-off-by: Matus Fabian --- src/plugins/nat/nat_reass.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'src/plugins/nat/nat_reass.c') diff --git a/src/plugins/nat/nat_reass.c b/src/plugins/nat/nat_reass.c index ed827a9038b..d7f9d58fc86 100755 --- a/src/plugins/nat/nat_reass.c +++ b/src/plugins/nat/nat_reass.c @@ -216,6 +216,60 @@ nat_ip4_reass_find (ip4_address_t src, ip4_address_t dst, u16 frag_id, return reass; } +nat_reass_ip4_t * +nat_ip4_reass_create (ip4_address_t src, ip4_address_t dst, u16 frag_id, + u8 proto) +{ + nat_reass_main_t *srm = &nat_reass_main; + nat_reass_ip4_t *reass = 0; + dlist_elt_t *elt, *per_reass_list_head_elt; + u32 elt_index; + f64 now = vlib_time_now (srm->vlib_main); + nat_reass_ip4_key_t k; + clib_bihash_kv_16_8_t kv; + + clib_spinlock_lock_if_init (&srm->ip4_reass_lock); + + if (srm->ip4_reass_n >= srm->ip4_max_reass) + { + nat_log_warn ("no free resassembly slot"); + goto unlock; + } + + pool_get (srm->ip4_reass_pool, reass); + pool_get (srm->ip4_reass_lru_list_pool, elt); + reass->lru_list_index = elt_index = elt - srm->ip4_reass_lru_list_pool; + clib_dlist_init (srm->ip4_reass_lru_list_pool, elt_index); + elt->value = reass - srm->ip4_reass_pool; + clib_dlist_addtail (srm->ip4_reass_lru_list_pool, + srm->ip4_reass_head_index, elt_index); + pool_get (srm->ip4_frags_list_pool, per_reass_list_head_elt); + reass->frags_per_reass_list_head_index = + per_reass_list_head_elt - srm->ip4_frags_list_pool; + clib_dlist_init (srm->ip4_frags_list_pool, + reass->frags_per_reass_list_head_index); + srm->ip4_reass_n++; + k.src.as_u32 = src.as_u32; + k.dst.as_u32 = dst.as_u32; + k.frag_id = frag_id; + k.proto = proto; + reass->key.as_u64[0] = kv.key[0] = k.as_u64[0]; + reass->key.as_u64[1] = kv.key[1] = k.as_u64[1]; + kv.value = reass - srm->ip4_reass_pool; + reass->sess_index = (u32) ~ 0; + reass->thread_index = (u32) ~ 0; + reass->last_heard = now; + reass->frag_n = 0; + reass->flags = 0; + reass->classify_next = NAT_REASS_IP4_CLASSIFY_NONE; + if (clib_bihash_add_del_16_8 (&srm->ip4_reass_hash, &kv, 1)) + nat_log_warn ("ip4_reass_hash add key failed"); + +unlock: + clib_spinlock_unlock_if_init (&srm->ip4_reass_lock); + return reass; +} + nat_reass_ip4_t * nat_ip4_reass_find_or_create (ip4_address_t src, ip4_address_t dst, u16 frag_id, u8 proto, u8 reset_timeout, -- cgit 1.2.3-korg