Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	net/ipv4/Kconfig
	net/ipv4/tcp_timer.c

6 files changed, 33 insertions, 17 deletions

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 5462e2d..e848e6c 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -223,7 +223,7 @@ config NET_IPGRE_DEMUX
 
 config NET_IPGRE
 	tristate "IP: GRE tunnels over IP"
-	depends on NET_IPGRE_DEMUX
+	depends on (IPV6 || IPV6=n) && NET_IPGRE_DEMUX
 	help
 	  Tunneling means encapsulating data of one protocol type within
 	  another protocol and sending it over a channel that understands the
@@ -419,7 +419,7 @@ config INET_XFRM_MODE_BEET
 	  If unsure, say Y.
 
 config INET_LRO
-	bool "Large Receive Offload (ipv4/tcp)"
+	tristate "Large Receive Offload (ipv4/tcp)"
 	default y
 	---help---
 	  Support for Large Receive Offload (ipv4/tcp).
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 1fdcacd..2a4bb76 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -834,7 +834,7 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
 	int			mark = 0;
 
 
-	if (len == 8 || IGMP_V2_SEEN(in_dev)) {
+	if (len == 8) {
 		if (ih->code == 0) {
 			/* Alas, old v1 router presents here. */
 
@@ -856,6 +856,18 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
 		igmpv3_clear_delrec(in_dev);
 	} else if (len < 12) {
 		return;	/* ignore bogus packet; freed by caller */
+	} else if (IGMP_V1_SEEN(in_dev)) {
+		/* This is a v3 query with v1 queriers present */
+		max_delay = IGMP_Query_Response_Interval;
+		group = 0;
+	} else if (IGMP_V2_SEEN(in_dev)) {
+		/* this is a v3 query with v2 queriers present;
+		 * Interpretation of the max_delay code is problematic here.
+		 * A real v2 host would use ih_code directly, while v3 has a
+		 * different encoding. We use the v3 encoding as more likely
+		 * to be intended in a v3 query.
+		 */
+		max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE);
 	} else { /* v3 */
 		if (!pskb_may_pull(skb, sizeof(struct igmpv3_query)))
 			return;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index c3cb8bd..04e0df8 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1232,7 +1232,7 @@ restart:
 			}
 
 			if (net_ratelimit())
-				printk(KERN_WARNING "Neighbour table overflow.\n");
+				printk(KERN_WARNING "ipv4: Neighbour table overflow.\n");
 			rt_drop(rt);
 			return -ENOBUFS;
 		}
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 19192c5..1664a05 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -943,7 +943,7 @@ int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 	sg = sk->sk_route_caps & NETIF_F_SG;
 
 	while (--iovlen >= 0) {
-		int seglen = iov->iov_len;
+		size_t seglen = iov->iov_len;
 		unsigned char __user *from = iov->iov_base;
 
 		iov++;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index eaf20e7..f6fdd72 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2532,7 +2532,8 @@ static void tcp_mark_head_lost(struct sock *sk, int packets)
 			cnt += tcp_skb_pcount(skb);
 
 		if (cnt > packets) {
-			if (tcp_is_sack(tp) || (oldcnt >= packets))
+			if ((tcp_is_sack(tp) && !tcp_is_fack(tp)) ||
+			    (oldcnt >= packets))
 				break;
 
 			mss = skb_shinfo(skb)->gso_size;
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index baea4a1..f3c8c6c 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -135,13 +135,16 @@ static void tcp_mtu_probing(struct inet_connection_sock *icsk, struct sock *sk)
 
 /* This function calculates a "timeout" which is equivalent to the timeout of a
  * TCP connection after "boundary" unsuccessful, exponentially backed-off
- * retransmissions with an initial RTO of TCP_RTO_MIN.
+ * retransmissions with an initial RTO of TCP_RTO_MIN or TCP_TIMEOUT_INIT if
+ * syn_set flag is set.
  */
 static bool retransmits_timed_out(struct sock *sk,
 				  unsigned int boundary,
-				  unsigned int timeout)
+				  unsigned int timeout,
+				  bool syn_set)
 {
 	unsigned int linear_backoff_thresh, start_ts;
+	unsigned int rto_base = syn_set ? TCP_TIMEOUT_INIT : TCP_RTO_MIN;
 
 	if (!inet_csk(sk)->icsk_retransmits)
 		return false;
@@ -152,12 +155,12 @@ static bool retransmits_timed_out(struct sock *sk,
 		start_ts = tcp_sk(sk)->retrans_stamp;
 
 	if (likely(timeout == 0)) {
-		linear_backoff_thresh = ilog2(TCP_RTO_MAX/TCP_RTO_MIN);
+		linear_backoff_thresh = ilog2(TCP_RTO_MAX/rto_base);
 
 		if (boundary <= linear_backoff_thresh)
-			timeout = ((2 << boundary) - 1) * TCP_RTO_MIN;
+			timeout = ((2 << boundary) - 1) * rto_base;
 		else
-			timeout = ((2 << linear_backoff_thresh) - 1) * TCP_RTO_MIN +
+			timeout = ((2 << linear_backoff_thresh) - 1) * rto_base +
 				(boundary - linear_backoff_thresh) * TCP_RTO_MAX;
 	}
 	return (tcp_time_stamp - start_ts) >= timeout;
@@ -168,14 +171,15 @@ static int tcp_write_timeout(struct sock *sk)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	int retry_until;
-	bool do_reset;
+	bool do_reset, syn_set = 0;
 
 	if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
 		if (icsk->icsk_retransmits)
 			dst_negative_advice(sk);
 		retry_until = icsk->icsk_syn_retries ? : sysctl_tcp_syn_retries;
+		syn_set = 1;
 	} else {
-		if (retransmits_timed_out(sk, sysctl_tcp_retries1, 0)) {
+		if (retransmits_timed_out(sk, sysctl_tcp_retries1, 0, 0)) {
 			/* Black hole detection */
 			tcp_mtu_probing(icsk, sk);
 
@@ -188,7 +192,7 @@ static int tcp_write_timeout(struct sock *sk)
 
 			retry_until = tcp_orphan_retries(sk, alive);
 			do_reset = alive ||
-				   !retransmits_timed_out(sk, retry_until, 0);
+				!retransmits_timed_out(sk, retry_until, 0, 0);
 
 			if (tcp_out_of_resources(sk, do_reset))
 				return 1;
@@ -196,8 +200,7 @@ static int tcp_write_timeout(struct sock *sk)
 	}
 
 	if (retransmits_timed_out(sk, retry_until,
-	    (1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV) ? 0 :
-	    icsk->icsk_user_timeout)) {
+				  syn_set ? 0 : icsk->icsk_user_timeout, syn_set)) {
 		/* Has it gone just too far? */
 		tcp_write_err(sk);
 		return 1;
@@ -439,7 +442,7 @@ out_reset_timer:
 		icsk->icsk_rto = min(icsk->icsk_rto << 1, TCP_RTO_MAX);
 	}
 	inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, icsk->icsk_rto, TCP_RTO_MAX);
-	if (retransmits_timed_out(sk, sysctl_tcp_retries1 + 1, 0))
+	if (retransmits_timed_out(sk, sysctl_tcp_retries1 + 1, 0, 0))
 		__sk_dst_reset(sk);
 
 out:;