[MCAST] IPv6: Check packet size when process Multicast

[safe/jmp/linux-2.6] / net / ipv6 / af_inet6.c

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 53a6680..4f8795a 100644 (file)
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -28,7 +28,6 @@
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/kernel.h>
-#include <linux/major.h>
 #include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/string.h>
@@ -45,6 +44,7 @@
 #include <linux/netdevice.h>
 #include <linux/icmpv6.h>
 #include <linux/smp_lock.h>
+#include <linux/netfilter_ipv6.h>
 
 #include <net/ip.h>
 #include <net/ipv6.h>
@@ -67,45 +67,14 @@ MODULE_AUTHOR("Cast of dozens");
 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
 MODULE_LICENSE("GPL");
 
-/* IPv6 procfs goodies... */
-
-#ifdef CONFIG_PROC_FS
-extern int raw6_proc_init(void);
-extern void raw6_proc_exit(void);
-extern int tcp6_proc_init(void);
-extern void tcp6_proc_exit(void);
-extern int udp6_proc_init(void);
-extern void udp6_proc_exit(void);
-extern int ipv6_misc_proc_init(void);
-extern void ipv6_misc_proc_exit(void);
-extern int ac6_proc_init(void);
-extern void ac6_proc_exit(void);
-extern int if6_proc_init(void);
-extern void if6_proc_exit(void);
-#endif
-
 int sysctl_ipv6_bindv6only;
 
-#ifdef INET_REFCNT_DEBUG
-atomic_t inet6_sock_nr;
-EXPORT_SYMBOL(inet6_sock_nr);
-#endif
-
 /* The inetsw table contains everything that inet_create needs to
  * build a new socket.
  */
 static struct list_head inetsw6[SOCK_MAX];
 static DEFINE_SPINLOCK(inetsw6_lock);
 
-static void inet6_sock_destruct(struct sock *sk)
-{
-       inet_sock_destruct(sk);
-
-#ifdef INET_REFCNT_DEBUG
-       atomic_dec(&inet6_sock_nr);
-#endif
-}
-
 static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
 {
        const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
@@ -186,7 +155,7 @@ static int inet6_create(struct socket *sock, int protocol)
                        inet->hdrincl = 1;
        }
 
-       sk->sk_destruct         = inet6_sock_destruct;
+       sk->sk_destruct         = inet_sock_destruct;
        sk->sk_family           = PF_INET6;
        sk->sk_protocol         = protocol;
 
@@ -213,12 +182,17 @@ static int inet6_create(struct socket *sock, int protocol)
                inet->pmtudisc = IP_PMTUDISC_DONT;
        else
                inet->pmtudisc = IP_PMTUDISC_WANT;
+       /* 
+        * Increment only the relevant sk_prot->socks debug field, this changes
+        * the previous behaviour of incrementing both the equivalent to
+        * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
+        *
+        * This allows better debug granularity as we'll know exactly how many
+        * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
+        * transport protocol socks. -acme
+        */
+       sk_refcnt_debug_inc(sk);
 
-
-#ifdef INET_REFCNT_DEBUG
-       atomic_inc(&inet6_sock_nr);
-       atomic_inc(&inet_sock_nr);
-#endif
        if (inet->num) {
                /* It assumes that any protocol which allows
                 * the user to assign a number at socket
@@ -514,11 +488,6 @@ static struct net_proto_family inet6_family_ops = {
        .owner  = THIS_MODULE,
 };
 
-#ifdef CONFIG_SYSCTL
-extern void ipv6_sysctl_register(void);
-extern void ipv6_sysctl_unregister(void);
-#endif
-
 /* Same as inet6_dgram_ops, sans udp_poll.  */
 static struct proto_ops inet6_sockraw_ops = {
        .family =       PF_INET6,
@@ -685,8 +654,6 @@ static void cleanup_ipv6_mibs(void)
        snmp6_mib_free((void **)udp_stats_in6);
 }
 
-extern int ipv6_misc_proc_init(void);
-
 static int __init inet6_init(void)
 {
        struct sk_buff *dummy_skb;
@@ -758,6 +725,9 @@ static int __init inet6_init(void)
        err = igmp6_init(&inet6_family_ops);
        if (err)
                goto igmp_fail;
+       err = ipv6_netfilter_init();
+       if (err)
+               goto netfilter_fail;
        /* Create /proc/foo6 entries. */
 #ifdef CONFIG_PROC_FS
        err = -ENOMEM;
@@ -775,7 +745,6 @@ static int __init inet6_init(void)
        if (if6_proc_init())
                goto proc_if6_fail;
 #endif
-       ipv6_packet_init();
        ip6_route_init();
        ip6_flowlabel_init();
        err = addrconf_init();
@@ -792,6 +761,8 @@ static int __init inet6_init(void)
        /* Init v6 transport protocols. */
        udpv6_init();
        tcpv6_init();
+
+       ipv6_packet_init();
        err = 0;
 out:
        return err;
@@ -799,7 +770,6 @@ out:
 addrconf_fail:
        ip6_flowlabel_cleanup();
        ip6_route_cleanup();
-       ipv6_packet_cleanup();
 #ifdef CONFIG_PROC_FS
        if6_proc_exit();
 proc_if6_fail:
@@ -814,6 +784,8 @@ proc_tcp6_fail:
        raw6_proc_exit();
 proc_raw6_fail:
 #endif
+       ipv6_netfilter_fini();
+netfilter_fail:
        igmp6_cleanup();
 igmp_fail:
        ndisc_cleanup();
@@ -853,6 +825,7 @@ static void __exit inet6_exit(void)
        ip6_route_cleanup();
        ipv6_packet_cleanup();
        igmp6_cleanup();
+       ipv6_netfilter_fini();
        ndisc_cleanup();
        icmpv6_cleanup();
 #ifdef CONFIG_SYSCTL