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[NETFILTER]: nf_conntrack_sctp: don't take sctp_lock once per chunk

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Don't take and release the lock once per SCTP chunk, simply hold it
the entire time while iterating through the chunks.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-01-14 23:47:25 -08:00 committed by David S. Miller
parent efe9f68afe
commit 4a64830af0
1 changed files with 2 additions and 3 deletions
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5
net/netfilter/nf_conntrack_proto_sctp.c
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@ -325,9 +325,8 @@ static int sctp_packet(struct nf_conn *ct,
}
old_state = new_state = SCTP_CONNTRACK_MAX;
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
write_lock_bh(&sctp_lock);
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
/* Special cases of Verification tag check (Sec 8.5.1) */
if (sch->type == SCTP_CID_INIT) {
/* Sec 8.5.1 (A) */
@ -378,8 +377,8 @@ static int sctp_packet(struct nf_conn *ct,
ct->proto.sctp.state = new_state;
if (old_state != new_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, skb);
write_unlock_bh(&sctp_lock);
}
write_unlock_bh(&sctp_lock);
nf_ct_refresh_acct(ct, ctinfo, skb, *sctp_timeouts[new_state]);