From 5a41db94c60ac2a12b5a559de658a10d174b046d Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 28 Feb 2012 02:23:28 +0100 Subject: [PATCH] netfilter: nf_ct_udp[lite]: convert UDP[lite] timeouts to array Use one array to store the UDP timeouts instead of two variables. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_proto_udp.c | 30 ++++++++++++++++++++---------- net/netfilter/nf_conntrack_proto_udplite.c | 25 +++++++++++++++++-------- 2 files changed, 37 insertions(+), 18 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c index 5f35757..5b24ff8 100644 --- a/net/netfilter/nf_conntrack_proto_udp.c +++ b/net/netfilter/nf_conntrack_proto_udp.c @@ -25,8 +25,16 @@ #include #include -static unsigned int nf_ct_udp_timeout __read_mostly = 30*HZ; -static unsigned int nf_ct_udp_timeout_stream __read_mostly = 180*HZ; +enum udp_conntrack { + UDP_CT_UNREPLIED, + UDP_CT_REPLIED, + UDP_CT_MAX +}; + +static unsigned int udp_timeouts[UDP_CT_MAX] = { + [UDP_CT_UNREPLIED] = 30*HZ, + [UDP_CT_REPLIED] = 180*HZ, +}; static bool udp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, @@ -74,13 +82,15 @@ static int udp_packet(struct nf_conn *ct, /* If we've seen traffic both ways, this is some kind of UDP stream. Extend timeout. */ if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) { - nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout_stream); + nf_ct_refresh_acct(ct, ctinfo, skb, + udp_timeouts[UDP_CT_REPLIED]); /* Also, more likely to be important, and not a probe */ if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) nf_conntrack_event_cache(IPCT_ASSURED, ct); - } else - nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout); - + } else { + nf_ct_refresh_acct(ct, ctinfo, skb, + udp_timeouts[UDP_CT_UNREPLIED]); + } return NF_ACCEPT; } @@ -142,14 +152,14 @@ static struct ctl_table_header *udp_sysctl_header; static struct ctl_table udp_sysctl_table[] = { { .procname = "nf_conntrack_udp_timeout", - .data = &nf_ct_udp_timeout, + .data = &udp_timeouts[UDP_CT_UNREPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "nf_conntrack_udp_timeout_stream", - .data = &nf_ct_udp_timeout_stream, + .data = &udp_timeouts[UDP_CT_REPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, @@ -160,14 +170,14 @@ static struct ctl_table udp_sysctl_table[] = { static struct ctl_table udp_compat_sysctl_table[] = { { .procname = "ip_conntrack_udp_timeout", - .data = &nf_ct_udp_timeout, + .data = &udp_timeouts[UDP_CT_UNREPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "ip_conntrack_udp_timeout_stream", - .data = &nf_ct_udp_timeout_stream, + .data = &udp_timeouts[UDP_CT_REPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c index f52ca11..e730717 100644 --- a/net/netfilter/nf_conntrack_proto_udplite.c +++ b/net/netfilter/nf_conntrack_proto_udplite.c @@ -24,8 +24,16 @@ #include #include -static unsigned int nf_ct_udplite_timeout __read_mostly = 30*HZ; -static unsigned int nf_ct_udplite_timeout_stream __read_mostly = 180*HZ; +enum udplite_conntrack { + UDPLITE_CT_UNREPLIED, + UDPLITE_CT_REPLIED, + UDPLITE_CT_MAX +}; + +static unsigned int udplite_timeouts[UDPLITE_CT_MAX] = { + [UDPLITE_CT_UNREPLIED] = 30*HZ, + [UDPLITE_CT_REPLIED] = 180*HZ, +}; static bool udplite_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, @@ -72,13 +80,14 @@ static int udplite_packet(struct nf_conn *ct, stream. Extend timeout. */ if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) { nf_ct_refresh_acct(ct, ctinfo, skb, - nf_ct_udplite_timeout_stream); + udplite_timeouts[UDPLITE_CT_REPLIED]); /* Also, more likely to be important, and not a probe */ if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status)) nf_conntrack_event_cache(IPCT_ASSURED, ct); - } else - nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udplite_timeout); - + } else { + nf_ct_refresh_acct(ct, ctinfo, skb, + udplite_timeouts[UDPLITE_CT_UNREPLIED]); + } return NF_ACCEPT; } @@ -147,14 +156,14 @@ static struct ctl_table_header *udplite_sysctl_header; static struct ctl_table udplite_sysctl_table[] = { { .procname = "nf_conntrack_udplite_timeout", - .data = &nf_ct_udplite_timeout, + .data = &udplite_timeouts[UDPLITE_CT_UNREPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, { .procname = "nf_conntrack_udplite_timeout_stream", - .data = &nf_ct_udplite_timeout_stream, + .data = &udplite_timeouts[UDPLITE_CT_REPLIED], .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_jiffies, -- 2.7.4