Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc

[linux-2.6-omap-h63xx.git] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 318d4674faa188e8aba6c6c8c17862fed6ce6ee6..1144900d37f6dbd6b91b19e307770db265d9c18c 100644 (file)
--- 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>
@@ -105,6 +104,7 @@
 #include <net/inet_connection_sock.h>
 #include <net/tcp.h>
 #include <net/udp.h>
+#include <net/udplite.h>
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <net/raw.h>
@@ -205,7 +205,7 @@ int inet_listen(struct socket *sock, int backlog)
         * we can only allow the backlog to be adjusted.
         */
        if (old_state != TCP_LISTEN) {
-               err = inet_csk_listen_start(sk, TCP_SYNQ_HSIZE);
+               err = inet_csk_listen_start(sk, backlog);
                if (err)
                        goto out;
        }
@@ -392,7 +392,7 @@ 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)
 {
@@ -644,7 +644,7 @@ int inet_getname(struct socket *sock, struct sockaddr *uaddr,
                sin->sin_port = inet->dport;
                sin->sin_addr.s_addr = inet->daddr;
        } else {
-               __u32 addr = inet->rcv_saddr;
+               __be32 addr = inet->rcv_saddr;
                if (!addr)
                        addr = inet->saddr;
                sin->sin_port = inet->sport;
@@ -988,16 +988,16 @@ 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)
 {
        struct inet_sock *inet = inet_sk(sk);
        int err;
        struct rtable *rt;
-       __u32 old_saddr = inet->saddr;
-       __u32 new_saddr;
-       __u32 daddr = inet->daddr;
+       __be32 old_saddr = inet->saddr;
+       __be32 new_saddr;
+       __be32 daddr = inet->daddr;
 
        if (inet->opt && inet->opt->srr)
                daddr = inet->opt->faddr;
@@ -1044,7 +1044,7 @@ int inet_sk_rebuild_header(struct sock *sk)
 {
        struct inet_sock *inet = inet_sk(sk);
        struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
-       u32 daddr;
+       __be32 daddr;
        int err;
 
        /* Route is OK, nothing to do. */
@@ -1074,6 +1074,7 @@ 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)
@@ -1097,6 +1098,40 @@ 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);
@@ -1162,6 +1197,7 @@ 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,
 };
@@ -1188,10 +1224,13 @@ static int __init init_ipv4_mibs(void)
        tcp_statistics[1] = alloc_percpu(struct tcp_mib);
        udp_statistics[0] = alloc_percpu(struct udp_mib);
        udp_statistics[1] = alloc_percpu(struct udp_mib);
+       udplite_statistics[0] = alloc_percpu(struct udp_mib);
+       udplite_statistics[1] = alloc_percpu(struct udp_mib);
        if (!
            (net_statistics[0] && net_statistics[1] && ip_statistics[0]
             && ip_statistics[1] && tcp_statistics[0] && tcp_statistics[1]
-            && udp_statistics[0] && udp_statistics[1]))
+            && udp_statistics[0] && udp_statistics[1]
+            && udplite_statistics[0] && udplite_statistics[1]             ) )
                return -ENOMEM;
 
        (void) tcp_mib_init();
@@ -1208,6 +1247,7 @@ 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,
 };
 
@@ -1218,10 +1258,7 @@ 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)
@@ -1280,6 +1317,8 @@ static int __init inet_init(void)
        /* Setup TCP slab cache for open requests. */
        tcp_init();
 
+       /* Add UDP-Lite (RFC 3828) */
+       udplite4_register();
 
        /*
         *      Set the ICMP layer up
@@ -1309,10 +1348,10 @@ static int __init inet_init(void)
        rc = 0;
 out:
        return rc;
-out_unregister_tcp_proto:
-       proto_unregister(&tcp_prot);
 out_unregister_udp_proto:
        proto_unregister(&udp_prot);
+out_unregister_tcp_proto:
+       proto_unregister(&tcp_prot);
        goto out;
 }