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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-15 12:40:05 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-15 12:40:05 -0400
commit2ed0e21b30b53d3a94e204196e523e6c8f732b56 (patch)
treede2635426477d86338a9469ce09ba0626052288f /net/ipv4/syncookies.c
parent0fa213310cd8fa7a51071cdcf130e26fa56e9549 (diff)
parent9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1244 commits) pkt_sched: Rename PSCHED_US2NS and PSCHED_NS2US ipv4: Fix fib_trie rebalancing Bluetooth: Fix issue with uninitialized nsh.type in DTL-1 driver Bluetooth: Fix Kconfig issue with RFKILL integration PIM-SM: namespace changes ipv4: update ARPD help text net: use a deferred timer in rt_check_expire ieee802154: fix kconfig bool/tristate muckup bonding: initialization rework bonding: use is_zero_ether_addr bonding: network device names are case sensative bonding: elminate bad refcount code bonding: fix style issues bonding: fix destructor bonding: remove bonding read/write semaphore bonding: initialize before registration bonding: bond_create always called with default parameters x_tables: Convert printk to pr_err netfilter: conntrack: optional reliable conntrack event delivery list_nulls: add hlist_nulls_add_head and hlist_nulls_del ...
Diffstat (limited to 'net/ipv4/syncookies.c')
-rw-r--r--net/ipv4/syncookies.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index b35a950d2e06..cd2b97f1b6e1 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -161,13 +161,12 @@ static __u16 const msstab[] = {
161 */ 161 */
162__u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp) 162__u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
163{ 163{
164 struct tcp_sock *tp = tcp_sk(sk);
165 const struct iphdr *iph = ip_hdr(skb); 164 const struct iphdr *iph = ip_hdr(skb);
166 const struct tcphdr *th = tcp_hdr(skb); 165 const struct tcphdr *th = tcp_hdr(skb);
167 int mssind; 166 int mssind;
168 const __u16 mss = *mssp; 167 const __u16 mss = *mssp;
169 168
170 tp->last_synq_overflow = jiffies; 169 tcp_synq_overflow(sk);
171 170
172 /* XXX sort msstab[] by probability? Binary search? */ 171 /* XXX sort msstab[] by probability? Binary search? */
173 for (mssind = 0; mss > msstab[mssind + 1]; mssind++) 172 for (mssind = 0; mss > msstab[mssind + 1]; mssind++)
@@ -268,7 +267,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
268 if (!sysctl_tcp_syncookies || !th->ack) 267 if (!sysctl_tcp_syncookies || !th->ack)
269 goto out; 268 goto out;
270 269
271 if (time_after(jiffies, tp->last_synq_overflow + TCP_TIMEOUT_INIT) || 270 if (tcp_synq_no_recent_overflow(sk) ||
272 (mss = cookie_check(skb, cookie)) == 0) { 271 (mss = cookie_check(skb, cookie)) == 0) {
273 NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESFAILED); 272 NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESFAILED);
274 goto out; 273 goto out;