X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=net%2Fipv4%2Faf_inet.c;h=250a02b23e4e1627db6e0720eca619db471454b6;hb=bada8adc4e6622764205921e6ba3f717aa03c882;hp=461216b47948681791162829e8c4ca2b78e54d87;hpb=61b9175808670d9abf52156803ae0ed1e3706ac4;p=linux-2.6-omap-h63xx.git

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 461216b4794..250a02b23e4 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -67,7 +67,6 @@
  *		2 of the License, or (at your option) any later version.
  */
 
-#include <linux/config.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/types.h>
@@ -392,7 +391,7 @@ int inet_release(struct socket *sock)
 }
 
 /* It is off by default, see below. */
-int sysctl_ip_nonlocal_bind;
+int sysctl_ip_nonlocal_bind __read_mostly;
 
 int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
@@ -988,7 +987,7 @@ void inet_unregister_protosw(struct inet_protosw *p)
  *      Shall we try to damage output packets if routing dev changes?
  */
 
-int sysctl_ip_dynaddr;
+int sysctl_ip_dynaddr __read_mostly;
 
 static int inet_sk_reselect_saddr(struct sock *sk)
 {
@@ -997,7 +996,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
 	struct rtable *rt;
 	__u32 old_saddr = inet->saddr;
 	__u32 new_saddr;
-	__u32 daddr = inet->daddr;
+	__be32 daddr = inet->daddr;
 
 	if (inet->opt && inet->opt->srr)
 		daddr = inet->opt->faddr;
@@ -1074,6 +1073,7 @@ int inet_sk_rebuild_header(struct sock *sk)
 		},
 	};
 						
+	security_sk_classify_flow(sk, &fl);
 	err = ip_route_output_flow(&rt, &fl, sk, 0);
 }
 	if (!err)
@@ -1097,7 +1097,41 @@ int inet_sk_rebuild_header(struct sock *sk)
 
 EXPORT_SYMBOL(inet_sk_rebuild_header);
 
-static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int sg)
+static int inet_gso_send_check(struct sk_buff *skb)
+{
+	struct iphdr *iph;
+	struct net_protocol *ops;
+	int proto;
+	int ihl;
+	int err = -EINVAL;
+
+	if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
+		goto out;
+
+	iph = skb->nh.iph;
+	ihl = iph->ihl * 4;
+	if (ihl < sizeof(*iph))
+		goto out;
+
+	if (unlikely(!pskb_may_pull(skb, ihl)))
+		goto out;
+
+	skb->h.raw = __skb_pull(skb, ihl);
+	iph = skb->nh.iph;
+	proto = iph->protocol & (MAX_INET_PROTOS - 1);
+	err = -EPROTONOSUPPORT;
+
+	rcu_read_lock();
+	ops = rcu_dereference(inet_protos[proto]);
+	if (likely(ops && ops->gso_send_check))
+		err = ops->gso_send_check(skb);
+	rcu_read_unlock();
+
+out:
+	return err;
+}
+
+static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features)
 {
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
 	struct iphdr *iph;
@@ -1106,7 +1140,15 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int sg)
 	int ihl;
 	int id;
 
-	if (!pskb_may_pull(skb, sizeof(*iph)))
+	if (unlikely(skb_shinfo(skb)->gso_type &
+		     ~(SKB_GSO_TCPV4 |
+		       SKB_GSO_UDP |
+		       SKB_GSO_DODGY |
+		       SKB_GSO_TCP_ECN |
+		       0)))
+		goto out;
+
+	if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
 		goto out;
 
 	iph = skb->nh.iph;
@@ -1114,7 +1156,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int sg)
 	if (ihl < sizeof(*iph))
 		goto out;
 
-	if (!pskb_may_pull(skb, ihl))
+	if (unlikely(!pskb_may_pull(skb, ihl)))
 		goto out;
 
 	skb->h.raw = __skb_pull(skb, ihl);
@@ -1125,11 +1167,11 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int sg)
 
 	rcu_read_lock();
 	ops = rcu_dereference(inet_protos[proto]);
-	if (ops && ops->gso_segment)
-		segs = ops->gso_segment(skb, sg);
+	if (likely(ops && ops->gso_segment))
+		segs = ops->gso_segment(skb, features);
 	rcu_read_unlock();
 
-	if (IS_ERR(segs))
+	if (!segs || unlikely(IS_ERR(segs)))
 		goto out;
 
 	skb = segs;
@@ -1154,6 +1196,7 @@ static struct net_protocol igmp_protocol = {
 static struct net_protocol tcp_protocol = {
 	.handler =	tcp_v4_rcv,
 	.err_handler =	tcp_v4_err,
+	.gso_send_check = tcp_v4_gso_send_check,
 	.gso_segment =	tcp_tso_segment,
 	.no_policy =	1,
 };
@@ -1200,6 +1243,7 @@ static int ipv4_proc_init(void);
 static struct packet_type ip_packet_type = {
 	.type = __constant_htons(ETH_P_IP),
 	.func = ip_rcv,
+	.gso_send_check = inet_gso_send_check,
 	.gso_segment = inet_gso_segment,
 };
 
@@ -1210,10 +1254,7 @@ static int __init inet_init(void)
 	struct list_head *r;
 	int rc = -EINVAL;
 
-	if (sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb)) {
-		printk(KERN_CRIT "%s: panic\n", __FUNCTION__);
-		goto out;
-	}
+	BUILD_BUG_ON(sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb));
 
 	rc = proto_register(&tcp_prot, 1);
 	if (rc)