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netfilter: conntrack: don't acquire lock during seq_printf 

read access doesn't need any lock here.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2016-04-11 21:14:29 +02:00 committed by Pablo Neira Ayuso
parent 4a96300cec
commit a163f2cb39
2 changed files with 2 additions and 14 deletions
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8
net/netfilter/nf_conntrack_proto_sctp.c
View File

@ -191,13 +191,7 @@ static void sctp_print_tuple(struct seq_file *s,
/* Print out the private part of the conntrack. */
static void sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
enum sctp_conntrack state;
spin_lock_bh(&ct->lock);
state = ct->proto.sctp.state;
spin_unlock_bh(&ct->lock);
seq_printf(s, "%s ", sctp_conntrack_names[state]);
seq_printf(s, "%s ", sctp_conntrack_names[ct->proto.sctp.state]);
}
#define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count) \

8
net/netfilter/nf_conntrack_proto_tcp.c
View File

@ -313,13 +313,7 @@ static void tcp_print_tuple(struct seq_file *s,
/* Print out the private part of the conntrack. */
static void tcp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
enum tcp_conntrack state;
spin_lock_bh(&ct->lock);
state = ct->proto.tcp.state;
spin_unlock_bh(&ct->lock);
seq_printf(s, "%s ", tcp_conntrack_names[state]);
seq_printf(s, "%s ", tcp_conntrack_names[ct->proto.tcp.state]);
}
static unsigned int get_conntrack_index(const struct tcphdr *tcph)