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when exceed max reass,

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frag packet can't get reass.

adding bihash,it can rewrite new hash value.
so need to delete hash after compare hash value.

Change-Id: I83b5c47890110e9a598b78cfbe8fcd27bbe291bb
Signed-off-by: ahdj007 <dong.juan1@zte.com.cn>
This commit is contained in:
ahdj007
2018-03-08 10:02:17 +08:00
committed by Damjan Marion
parent 31ed744076
commit 5e85c54d22
1 changed files with 12 additions and 6 deletions
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18
src/plugins/nat/nat_reass.c
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@ -228,7 +228,7 @@ nat_ip4_reass_find_or_create (ip4_address_t src, ip4_address_t dst,
dlist_elt_t *oldest_elt, *elt; dlist_elt_t *oldest_elt, *elt;
dlist_elt_t *per_reass_list_head_elt; dlist_elt_t *per_reass_list_head_elt;
u32 oldest_index, elt_index; u32 oldest_index, elt_index;
clib_bihash_kv_16_8_t kv; clib_bihash_kv_16_8_t kv, value;
k.src.as_u32 = src.as_u32; k.src.as_u32 = src.as_u32;
k.dst.as_u32 = dst.as_u32; k.dst.as_u32 = dst.as_u32;
@ -273,12 +273,18 @@ nat_ip4_reass_find_or_create (ip4_address_t src, ip4_address_t dst,
clib_dlist_addtail (srm->ip4_reass_lru_list_pool, clib_dlist_addtail (srm->ip4_reass_lru_list_pool,
srm->ip4_reass_head_index, oldest_index); srm->ip4_reass_head_index, oldest_index);
kv.key[0] = k.as_u64[0]; kv.key[0] = reass->key.as_u64[0];
kv.key[1] = k.as_u64[1]; kv.key[1] = reass->key.as_u64[1];
if (clib_bihash_add_del_16_8 (&srm->ip4_reass_hash, &kv, 0)) if (!clib_bihash_search_16_8 (&srm->ip4_reass_hash, &kv, &value))
{ {
reass = 0; if (value.value == (reass - srm->ip4_reass_pool))
goto unlock; {
if (clib_bihash_add_del_16_8 (&srm->ip4_reass_hash, &kv, 0))
{
reass = 0;
goto unlock;
}
}
} }
nat_ip4_reass_get_frags_inline (reass, bi_to_drop); nat_ip4_reass_get_frags_inline (reass, bi_to_drop);