diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-02-28 19:56:31 +0400 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-03-07 20:41:15 +0400 |
| commit | 33ee44643f10638f0ce6a96d11e30d1fbe877024 (patch) | |
| tree | 185021662b6ed2922a4a2b47852b547184561b8b /net | |
| parent | 5a41db94c60ac2a12b5a559de658a10d174b046d (diff) | |
| download | linux-33ee44643f10638f0ce6a96d11e30d1fbe877024.tar.xz | |
netfilter: nf_ct_tcp: move retransmission and unacknowledged timeout to array
This patch moves the retransmission and unacknowledged timeouts
to the tcp_timeouts array. This change is required by follow-up
patches.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_tcp.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 97b9f3ebf28c..57c778546094 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -64,13 +64,7 @@ static const char *const tcp_conntrack_names[] = { #define HOURS * 60 MINS #define DAYS * 24 HOURS -/* RFC1122 says the R2 limit should be at least 100 seconds. - Linux uses 15 packets as limit, which corresponds - to ~13-30min depending on RTO. */ -static unsigned int nf_ct_tcp_timeout_max_retrans __read_mostly = 5 MINS; -static unsigned int nf_ct_tcp_timeout_unacknowledged __read_mostly = 5 MINS; - -static unsigned int tcp_timeouts[TCP_CONNTRACK_MAX] __read_mostly = { +static unsigned int tcp_timeouts[TCP_CONNTRACK_TIMEOUT_MAX] __read_mostly = { [TCP_CONNTRACK_SYN_SENT] = 2 MINS, [TCP_CONNTRACK_SYN_RECV] = 60 SECS, [TCP_CONNTRACK_ESTABLISHED] = 5 DAYS, @@ -80,6 +74,11 @@ static unsigned int tcp_timeouts[TCP_CONNTRACK_MAX] __read_mostly = { [TCP_CONNTRACK_TIME_WAIT] = 2 MINS, [TCP_CONNTRACK_CLOSE] = 10 SECS, [TCP_CONNTRACK_SYN_SENT2] = 2 MINS, +/* RFC1122 says the R2 limit should be at least 100 seconds. + Linux uses 15 packets as limit, which corresponds + to ~13-30min depending on RTO. */ + [TCP_CONNTRACK_RETRANS] = 5 MINS, + [TCP_CONNTRACK_UNACK] = 5 MINS, }; #define sNO TCP_CONNTRACK_NONE @@ -1015,12 +1014,12 @@ static int tcp_packet(struct nf_conn *ct, ct->proto.tcp.seen[dir].flags |= IP_CT_TCP_FLAG_CLOSE_INIT; if (ct->proto.tcp.retrans >= nf_ct_tcp_max_retrans && - tcp_timeouts[new_state] > nf_ct_tcp_timeout_max_retrans) - timeout = nf_ct_tcp_timeout_max_retrans; + tcp_timeouts[new_state] > tcp_timeouts[TCP_CONNTRACK_RETRANS]) + timeout = tcp_timeouts[TCP_CONNTRACK_RETRANS]; else if ((ct->proto.tcp.seen[0].flags | ct->proto.tcp.seen[1].flags) & IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED && - tcp_timeouts[new_state] > nf_ct_tcp_timeout_unacknowledged) - timeout = nf_ct_tcp_timeout_unacknowledged; + tcp_timeouts[new_state] > tcp_timeouts[TCP_CONNTRACK_UNACK]) + timeout = tcp_timeouts[TCP_CONNTRACK_UNACK]; else timeout = tcp_timeouts[new_state]; spin_unlock_bh(&ct->lock); @@ -1301,14 +1300,14 @@ static struct ctl_table tcp_sysctl_table[] = { }, { .procname = "nf_conntrack_tcp_timeout_max_retrans", - .data = &nf_ct_tcp_timeout_max_retrans, + .data = &tcp_timeouts[TCP_CONNTRACK_RETRANS], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "nf_conntrack_tcp_timeout_unacknowledged", - .data = &nf_ct_tcp_timeout_unacknowledged, + .data = &tcp_timeouts[TCP_CONNTRACK_UNACK], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, @@ -1404,7 +1403,7 @@ static struct ctl_table tcp_compat_sysctl_table[] = { }, { .procname = "ip_conntrack_tcp_timeout_max_retrans", - .data = &nf_ct_tcp_timeout_max_retrans, + .data = &tcp_timeouts[TCP_CONNTRACK_RETRANS], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, |