diff options
Diffstat (limited to 'net/ipv4/ip_fragment.c')
| -rw-r--r-- | net/ipv4/ip_fragment.c | 34 |
1 files changed, 5 insertions, 29 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 7416c05dd33..e231c248aea 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -115,32 +115,12 @@ static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot) ip4_frags.rnd) & (INETFRAGS_HASHSZ - 1); } -static void ipfrag_secret_rebuild(unsigned long dummy) +static unsigned int ip4_hashfn(struct inet_frag_queue *q) { - unsigned long now = jiffies; - int i; + struct ipq *ipq; - write_lock(&ip4_frags.lock); - get_random_bytes(&ip4_frags.rnd, sizeof(u32)); - for (i = 0; i < INETFRAGS_HASHSZ; i++) { - struct ipq *q; - struct hlist_node *p, *n; - - hlist_for_each_entry_safe(q, p, n, &ip4_frags.hash[i], q.list) { - unsigned int hval = ipqhashfn(q->id, q->saddr, - q->daddr, q->protocol); - - if (hval != i) { - hlist_del(&q->q.list); - - /* Relink to new hash chain. */ - hlist_add_head(&q->q.list, &ip4_frags.hash[hval]); - } - } - } - write_unlock(&ip4_frags.lock); - - mod_timer(&ip4_frags.secret_timer, now + ip4_frags_ctl.secret_interval); + ipq = container_of(q, struct ipq, q); + return ipqhashfn(ipq->id, ipq->saddr, ipq->daddr, ipq->protocol); } /* Memory Tracking Functions. */ @@ -739,12 +719,8 @@ int ip_defrag(struct sk_buff *skb, u32 user) void __init ipfrag_init(void) { - init_timer(&ip4_frags.secret_timer); - ip4_frags.secret_timer.function = ipfrag_secret_rebuild; - ip4_frags.secret_timer.expires = jiffies + ip4_frags_ctl.secret_interval; - add_timer(&ip4_frags.secret_timer); - ip4_frags.ctl = &ip4_frags_ctl; + ip4_frags.hashfn = ip4_hashfn; inet_frags_init(&ip4_frags); } |