Merge branch 'master' into upstream

9 files changed, 46 insertions, 30 deletions

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 4c20f55..a2ede16 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -440,6 +440,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
 	iph = skb->nh.iph;
 
 	if (unlikely((iph->frag_off & htons(IP_DF)) && !skb->local_df)) {
+		IP_INC_STATS(IPSTATS_MIB_FRAGFAILS);
 		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
 			  htonl(dst_mtu(&rt->u.dst)));
 		kfree_skb(skb);
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 5765f9d..7ff2e42 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -189,7 +189,7 @@ void tcp_slow_start(struct tcp_sock *tp)
 			return;
 
 		/* We MAY increase by 2 if discovered delayed ack */
-		if (sysctl_tcp_abc > 1 && tp->bytes_acked > 2*tp->mss_cache) {
+		if (sysctl_tcp_abc > 1 && tp->bytes_acked >= 2*tp->mss_cache) {
 			if (tp->snd_cwnd < tp->snd_cwnd_clamp)
 				tp->snd_cwnd++;
 		}
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 104af5d5..111ff39 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2505,8 +2505,13 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
 	if (before(ack, prior_snd_una))
 		goto old_ack;
 
-	if (sysctl_tcp_abc && icsk->icsk_ca_state < TCP_CA_CWR)
-		tp->bytes_acked += ack - prior_snd_una;
+	if (sysctl_tcp_abc) {
+		if (icsk->icsk_ca_state < TCP_CA_CWR)
+			tp->bytes_acked += ack - prior_snd_una;
+		else if (icsk->icsk_ca_state == TCP_CA_Loss)
+			/* we assume just one segment left network */
+			tp->bytes_acked += min(ack - prior_snd_una, tp->mss_cache);
+	}
 
 	if (!(flag&FLAG_SLOWPATH) && after(ack, prior_snd_una)) {
 		/* Window is constant, pure forward advance.
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 0c5042e..c7852b3 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -578,6 +578,8 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
 	ifa->flags = flags | IFA_F_TENTATIVE;
 	ifa->cstamp = ifa->tstamp = jiffies;
 
+	ifa->rt = rt;
+
 	ifa->idev = idev;
 	in6_dev_hold(idev);
 	/* For caller */
@@ -603,8 +605,6 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
 	}
 #endif
 
-	ifa->rt = rt;
-
 	in6_ifa_hold(ifa);
 	write_unlock(&idev->lock);
 out2:
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 9d0ee7f..86dac10 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -635,14 +635,17 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
 	struct ipv6_txoptions *opt2;
 	int err;
 
-	if (newtype != IPV6_HOPOPTS && opt->hopopt)
-		tot_len += CMSG_ALIGN(ipv6_optlen(opt->hopopt));
-	if (newtype != IPV6_RTHDRDSTOPTS && opt->dst0opt)
-		tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst0opt));
-	if (newtype != IPV6_RTHDR && opt->srcrt)
-		tot_len += CMSG_ALIGN(ipv6_optlen(opt->srcrt));
-	if (newtype != IPV6_DSTOPTS && opt->dst1opt)
-		tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst1opt));
+	if (opt) {
+		if (newtype != IPV6_HOPOPTS && opt->hopopt)
+			tot_len += CMSG_ALIGN(ipv6_optlen(opt->hopopt));
+		if (newtype != IPV6_RTHDRDSTOPTS && opt->dst0opt)
+			tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst0opt));
+		if (newtype != IPV6_RTHDR && opt->srcrt)
+			tot_len += CMSG_ALIGN(ipv6_optlen(opt->srcrt));
+		if (newtype != IPV6_DSTOPTS && opt->dst1opt)
+			tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst1opt));
+	}
+
 	if (newopt && newoptlen)
 		tot_len += CMSG_ALIGN(newoptlen);
 
@@ -659,25 +662,25 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
 	opt2->tot_len = tot_len;
 	p = (char *)(opt2 + 1);
 
-	err = ipv6_renew_option(opt->hopopt, newopt, newoptlen,
+	err = ipv6_renew_option(opt ? opt->hopopt : NULL, newopt, newoptlen,
 				newtype != IPV6_HOPOPTS,
 				&opt2->hopopt, &p);
 	if (err)
 		goto out;
 
-	err = ipv6_renew_option(opt->dst0opt, newopt, newoptlen,
+	err = ipv6_renew_option(opt ? opt->dst0opt : NULL, newopt, newoptlen,
 				newtype != IPV6_RTHDRDSTOPTS,
 				&opt2->dst0opt, &p);
 	if (err)
 		goto out;
 
-	err = ipv6_renew_option(opt->srcrt, newopt, newoptlen,
+	err = ipv6_renew_option(opt ? opt->srcrt : NULL, newopt, newoptlen,
 				newtype != IPV6_RTHDR,
-				(struct ipv6_opt_hdr **)opt2->srcrt, &p);
+				(struct ipv6_opt_hdr **)&opt2->srcrt, &p);
 	if (err)
 		goto out;
 
-	err = ipv6_renew_option(opt->dst1opt, newopt, newoptlen,
+	err = ipv6_renew_option(opt ? opt->dst1opt : NULL, newopt, newoptlen,
 				newtype != IPV6_DSTOPTS,
 				&opt2->dst1opt, &p);
 	if (err)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 4b16371..d9baca0 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1532,6 +1532,10 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
 
 static int ip6_pkt_discard(struct sk_buff *skb)
 {
+	int type = ipv6_addr_type(&skb->nh.ipv6h->daddr);
+	if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED)
+		IP6_INC_STATS(IPSTATS_MIB_INADDRERRORS);
+
 	IP6_INC_STATS(IPSTATS_MIB_OUTNOROUTES);
 	icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_NOROUTE, 0, skb->dev);
 	kfree_skb(skb);
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index b85c1f9..8b85036 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1273,8 +1273,7 @@ netlink_kernel_create(int unit, unsigned int groups,
 	struct netlink_sock *nlk;
 	unsigned long *listeners = NULL;
 
-	if (!nl_table)
-		return NULL;
+	BUG_ON(!nl_table);
 
 	if (unit<0 || unit>=MAX_LINKS)
 		return NULL;
@@ -1745,11 +1744,8 @@ static int __init netlink_proto_init(void)
 		netlink_skb_parms_too_large();
 
 	nl_table = kcalloc(MAX_LINKS, sizeof(*nl_table), GFP_KERNEL);
-	if (!nl_table) {
-enomem:
-		printk(KERN_CRIT "netlink_init: Cannot allocate nl_table\n");
-		return -ENOMEM;
-	}
+	if (!nl_table)
+		goto panic;
 
 	if (num_physpages >= (128 * 1024))
 		max = num_physpages >> (21 - PAGE_SHIFT);
@@ -1769,7 +1765,7 @@ enomem:
 				nl_pid_hash_free(nl_table[i].hash.table,
 						 1 * sizeof(*hash->table));
 			kfree(nl_table);
-			goto enomem;
+			goto panic;
 		}
 		memset(hash->table, 0, 1 * sizeof(*hash->table));
 		hash->max_shift = order;
@@ -1786,6 +1782,8 @@ enomem:
 	rtnetlink_init();
 out:
 	return err;
+panic:
+	panic("netlink_init: Cannot allocate nl_table\n");
 }
 
 core_initcall(netlink_proto_init);
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index fde3f55..dab1594 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1289,9 +1289,13 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 			}
 		}
 
-		if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime)
-			sctp_primitive_ABORT(asoc, NULL);
-		else
+		if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime) {
+			struct sctp_chunk *chunk;
+
+			chunk = sctp_make_abort_user(asoc, NULL, 0);
+			if (chunk)
+				sctp_primitive_ABORT(asoc, chunk);
+		} else
 			sctp_primitive_SHUTDOWN(asoc, NULL);
 	}
 
diff --git a/net/socket.c b/net/socket.c
index b4848ce..6d261bf 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1178,7 +1178,8 @@ static int __sock_create(int family, int type, int protocol, struct socket **res
  */
 
 	if (!(sock = sock_alloc())) {
-		printk(KERN_WARNING "socket: no more sockets\n");
+		if (net_ratelimit())
+			printk(KERN_WARNING "socket: no more sockets\n");
 		err = -ENFILE;		/* Not exactly a match, but its the
 					   closest posix thing */
 		goto out;