X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=net%2Fipv4%2Faf_inet.c;h=f2e8927f4596098b56b46935ec6d095c61cbf9d6;hb=1b5c229987dc4d0c92a38fac0cde2aeec08cd775;hp=0a277453526b9c9730475b77368bfdb0cae2b894;hpb=59f720eb5a4337b2c4fc0b4c6cfd9c144e492aa8;p=powerpc.git

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 0a27745352..f2e8927f45 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -67,7 +67,7 @@
  *		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>
 #include <linux/socket.h>
@@ -391,7 +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)
 {
@@ -987,7 +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)
 {
@@ -1073,6 +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)
@@ -1096,6 +1097,96 @@ int inet_sk_rebuild_header(struct sock *sk)
 
 EXPORT_SYMBOL(inet_sk_rebuild_header);
 
+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;
+	struct net_protocol *ops;
+	int proto;
+	int ihl;
+	int id;
+
+	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;
+	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;
+	id = ntohs(iph->id);
+	proto = iph->protocol & (MAX_INET_PROTOS - 1);
+	segs = ERR_PTR(-EPROTONOSUPPORT);
+
+	rcu_read_lock();
+	ops = rcu_dereference(inet_protos[proto]);
+	if (likely(ops && ops->gso_segment))
+		segs = ops->gso_segment(skb, features);
+	rcu_read_unlock();
+
+	if (!segs || unlikely(IS_ERR(segs)))
+		goto out;
+
+	skb = segs;
+	do {
+		iph = skb->nh.iph;
+		iph->id = htons(id++);
+		iph->tot_len = htons(skb->len - skb->mac_len);
+		iph->check = 0;
+		iph->check = ip_fast_csum(skb->nh.raw, iph->ihl);
+	} while ((skb = skb->next));
+
+out:
+	return segs;
+}
+
 #ifdef CONFIG_IP_MULTICAST
 static struct net_protocol igmp_protocol = {
 	.handler =	igmp_rcv,
@@ -1105,6 +1196,8 @@ 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,
 };
 
@@ -1150,6 +1243,8 @@ 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,
 };
 
 static int __init inet_init(void)