module: be more picky about allowing missing module versions

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

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 994648be80ab7e3e4a60abdb3e1a28e4aae290ca..6250f4239b619e516e694207be49e29c2988c9ea 100644 (file)
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -130,12 +130,12 @@
  */
 
 #define IGMP_V1_SEEN(in_dev) \
-       (IPV4_DEVCONF_ALL(in_dev->dev->nd_net, FORCE_IGMP_VERSION) == 1 || \
+       (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 1 || \
         IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 1 || \
         ((in_dev)->mr_v1_seen && \
          time_before(jiffies, (in_dev)->mr_v1_seen)))
 #define IGMP_V2_SEEN(in_dev) \
-       (IPV4_DEVCONF_ALL(in_dev->dev->nd_net, FORCE_IGMP_VERSION) == 2 || \
+       (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 2 || \
         IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 2 || \
         ((in_dev)->mr_v2_seen && \
          time_before(jiffies, (in_dev)->mr_v2_seen)))
@@ -922,13 +922,11 @@ int igmp_rcv(struct sk_buff *skb)
        struct in_device *in_dev = in_dev_get(skb->dev);
        int len = skb->len;
 
-       if (in_dev==NULL) {
-               kfree_skb(skb);
-               return 0;
-       }
+       if (in_dev == NULL)
+               goto drop;
 
        if (!pskb_may_pull(skb, sizeof(struct igmphdr)))
-               goto drop;
+               goto drop_ref;
 
        switch (skb->ip_summed) {
        case CHECKSUM_COMPLETE:
@@ -938,7 +936,7 @@ int igmp_rcv(struct sk_buff *skb)
        case CHECKSUM_NONE:
                skb->csum = 0;
                if (__skb_checksum_complete(skb))
-                       goto drop;
+                       goto drop_ref;
        }
 
        ih = igmp_hdr(skb);
@@ -950,7 +948,7 @@ int igmp_rcv(struct sk_buff *skb)
        case IGMPV2_HOST_MEMBERSHIP_REPORT:
        case IGMPV3_HOST_MEMBERSHIP_REPORT:
                /* Is it our report looped back? */
-               if (((struct rtable*)skb->dst)->fl.iif == 0)
+               if (skb->rtable->fl.iif == 0)
                        break;
                /* don't rely on MC router hearing unicast reports */
                if (skb->pkt_type == PACKET_MULTICAST ||
@@ -972,8 +970,9 @@ int igmp_rcv(struct sk_buff *skb)
                break;
        }
 
-drop:
+drop_ref:
        in_dev_put(in_dev);
+drop:
        kfree_skb(skb);
        return 0;
 }
@@ -1199,6 +1198,9 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
 
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        for (im=in_dev->mc_list; im; im=im->next) {
                if (im->multiaddr == addr) {
                        im->users++;
@@ -1278,6 +1280,9 @@ void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
 
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
                if (i->multiaddr==addr) {
                        if (--i->users == 0) {
@@ -1305,6 +1310,9 @@ void ip_mc_down(struct in_device *in_dev)
 
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        for (i=in_dev->mc_list; i; i=i->next)
                igmp_group_dropped(i);
 
@@ -1325,6 +1333,9 @@ void ip_mc_init_dev(struct in_device *in_dev)
 {
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        in_dev->mc_tomb = NULL;
 #ifdef CONFIG_IP_MULTICAST
        in_dev->mr_gq_running = 0;
@@ -1348,6 +1359,9 @@ void ip_mc_up(struct in_device *in_dev)
 
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS);
 
        for (i=in_dev->mc_list; i; i=i->next)
@@ -1364,6 +1378,9 @@ void ip_mc_destroy_dev(struct in_device *in_dev)
 
        ASSERT_RTNL();
 
+       if (dev_net(in_dev->dev) != &init_net)
+               return;
+
        /* Deactivate timers */
        ip_mc_down(in_dev);
 
@@ -1745,6 +1762,9 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
 
        in_dev = ip_mc_find_dev(imr);
@@ -1813,6 +1833,9 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
        u32 ifindex;
        int ret = -EADDRNOTAVAIL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
        in_dev = ip_mc_find_dev(imr);
        ifindex = imr->imr_ifindex;
@@ -1858,6 +1881,9 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
 
        imr.imr_multiaddr.s_addr = mreqs->imr_multiaddr;
@@ -1991,6 +2017,9 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
            msf->imsf_fmode != MCAST_EXCLUDE)
                return -EINVAL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
 
        imr.imr_multiaddr.s_addr = msf->imsf_multiaddr;
@@ -2071,6 +2100,9 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
 
        imr.imr_multiaddr.s_addr = msf->imsf_multiaddr;
@@ -2133,6 +2165,9 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
+       if (sock_net(sk) != &init_net)
+               return -EPROTONOSUPPORT;
+
        rtnl_lock();
 
        err = -EADDRNOTAVAIL;
@@ -2217,6 +2252,9 @@ void ip_mc_drop_socket(struct sock *sk)
        if (inet->mc_list == NULL)
                return;
 
+       if (sock_net(sk) != &init_net)
+               return;
+
        rtnl_lock();
        while ((iml = inet->mc_list) != NULL) {
                struct in_device *in_dev;