diff options
Diffstat (limited to 'net/ipv4/inet_fragment.c')
| -rw-r--r-- | net/ipv4/inet_fragment.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 3b01959bf4b..930d2387081 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -46,6 +46,12 @@ const u8 ip_frag_ecn_table[16] = { }; EXPORT_SYMBOL(ip_frag_ecn_table); +static unsigned int +inet_frag_hashfn(const struct inet_frags *f, const struct inet_frag_queue *q) +{ + return f->hashfn(q) & (INETFRAGS_HASHSZ - 1); +} + static void inet_frag_secret_rebuild(unsigned long dummy) { struct inet_frags *f = (struct inet_frags *)dummy; @@ -63,7 +69,7 @@ static void inet_frag_secret_rebuild(unsigned long dummy) hb = &f->hash[i]; hlist_for_each_entry_safe(q, n, &hb->chain, list) { - unsigned int hval = f->hashfn(q); + unsigned int hval = inet_frag_hashfn(f, q); if (hval != i) { struct inet_frag_bucket *hb_dest; @@ -133,7 +139,7 @@ static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f) unsigned int hash; read_lock(&f->lock); - hash = f->hashfn(fq); + hash = inet_frag_hashfn(f, fq); hb = &f->hash[hash]; spin_lock(&hb->chain_lock); @@ -252,7 +258,7 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf, * the rnd seed, so we need to re-calculate the hash * chain. Fortunatelly the qp_in can be used to get one. */ - hash = f->hashfn(qp_in); + hash = inet_frag_hashfn(f, qp_in); hb = &f->hash[hash]; spin_lock(&hb->chain_lock); @@ -326,6 +332,7 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, struct inet_frag_queue *q; int depth = 0; + hash &= (INETFRAGS_HASHSZ - 1); hb = &f->hash[hash]; spin_lock(&hb->chain_lock); |