[IPV4]: Fix multiple bugs in IGMPv3

[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 eaa150c33b0403204fa22224d6434e5c45f7695c..97c276f95b35ecfe950ddd43140770705fcd6b51 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -79,6 +79,7 @@
 #include <linux/string.h>
 #include <linux/sockios.h>
 #include <linux/net.h>
+#include <linux/capability.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
@@ -93,6 +94,7 @@
 #include <linux/smp_lock.h>
 #include <linux/inet.h>
 #include <linux/igmp.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -228,13 +230,14 @@ static int inet_create(struct socket *sock, int protocol)
        unsigned char answer_flags;
        char answer_no_check;
        int try_loading_module = 0;
-       int err = -ESOCKTNOSUPPORT;
+       int err;
 
        sock->state = SS_UNCONNECTED;
 
        /* Look for the requested type/protocol pair. */
        answer = NULL;
 lookup_protocol:
+       err = -ESOCKTNOSUPPORT;
        rcu_read_lock();
        list_for_each_rcu(p, &inetsw[sock->type]) {
                answer = list_entry(p, struct inet_protosw, list);
@@ -252,6 +255,7 @@ lookup_protocol:
                        if (IPPROTO_IP == answer->protocol)
                                break;
                }
+               err = -EPROTONOSUPPORT;
                answer = NULL;
        }
 
@@ -280,9 +284,6 @@ lookup_protocol:
        err = -EPERM;
        if (answer->capability > 0 && !capable(answer->capability))
                goto out_rcu_unlock;
-       err = -EPROTONOSUPPORT;
-       if (!protocol)
-               goto out_rcu_unlock;
 
        sock->ops = answer->ops;
        answer_prot = answer->prot;
@@ -303,6 +304,7 @@ lookup_protocol:
                sk->sk_reuse = 1;
 
        inet = inet_sk(sk);
+       inet->is_icsk = INET_PROTOSW_ICSK & answer_flags;
 
        if (SOCK_RAW == sock->type) {
                inet->num = protocol;
@@ -776,16 +778,16 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                        err = devinet_ioctl(cmd, (void __user *)arg);
                        break;
                default:
-                       if (!sk->sk_prot->ioctl ||
-                           (err = sk->sk_prot->ioctl(sk, cmd, arg)) ==
-                                                               -ENOIOCTLCMD)
-                               err = dev_ioctl(cmd, (void __user *)arg);
+                       if (sk->sk_prot->ioctl)
+                               err = sk->sk_prot->ioctl(sk, cmd, arg);
+                       else
+                               err = -ENOIOCTLCMD;
                        break;
        }
        return err;
 }
 
-struct proto_ops inet_stream_ops = {
+const struct proto_ops inet_stream_ops = {
        .family =       PF_INET,
        .owner =        THIS_MODULE,
        .release =      inet_release,
@@ -806,7 +808,7 @@ struct proto_ops inet_stream_ops = {
        .sendpage =     tcp_sendpage
 };
 
-struct proto_ops inet_dgram_ops = {
+const struct proto_ops inet_dgram_ops = {
        .family =       PF_INET,
        .owner =        THIS_MODULE,
        .release =      inet_release,
@@ -831,7 +833,7 @@ struct proto_ops inet_dgram_ops = {
  * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without
  * udp_poll
  */
-static struct proto_ops inet_sockraw_ops = {
+static const struct proto_ops inet_sockraw_ops = {
        .family =       PF_INET,
        .owner =        THIS_MODULE,
        .release =      inet_release,
@@ -870,7 +872,8 @@ static struct inet_protosw inetsw_array[] =
                 .ops =        &inet_stream_ops,
                 .capability = -1,
                 .no_check =   0,
-                .flags =      INET_PROTOSW_PERMANENT,
+                .flags =      INET_PROTOSW_PERMANENT |
+                             INET_PROTOSW_ICSK,
         },
 
         {