socket: SOCK_DEBUG type checking

[safe/jmp/linux-2.6] / include / net / sock.h

diff --git a/include/net/sock.h b/include/net/sock.h
index 8a7889b..b89680d 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -70,7 +70,11 @@
 #define SOCK_DEBUG(sk, msg...) do { if ((sk) && sock_flag((sk), SOCK_DBG)) \
                                        printk(KERN_DEBUG msg); } while (0)
 #else
-#define SOCK_DEBUG(sk, msg...) do { } while (0)
+/* Validate arguments and do nothing */
+static void inline int __attribute__ ((format (printf, 2, 3)))
+SOCK_DEBUG(struct sock *sk, const char *msg, ...)
+{
+}
 #endif
 
 /* This is the per-socket lock.  The spinlock provides a synchronization
@@ -151,6 +155,7 @@ struct sock_common {
   *    @sk_no_check: %SO_NO_CHECK setting, wether or not checkup packets
   *    @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO)
   *    @sk_gso_type: GSO type (e.g. %SKB_GSO_TCPV4)
+  *    @sk_gso_max_size: Maximum GSO segment size to build
   *    @sk_lingertime: %SO_LINGER l_linger setting
   *    @sk_backlog: always used with the per-socket spinlock held
   *    @sk_callback_lock: used with the callbacks in the end of this struct
@@ -180,6 +185,7 @@ struct sock_common {
   *    @sk_sndmsg_off: cached offset for sendmsg
   *    @sk_send_head: front of stuff to transmit
   *    @sk_security: used by security modules
+  *    @sk_mark: generic packet mark
   *    @sk_write_pending: a write to stream socket waits to start
   *    @sk_state_change: callback to indicate change in the state of the sock
   *    @sk_data_ready: callback to indicate there is data to be processed
@@ -236,6 +242,7 @@ struct sock {
        gfp_t                   sk_allocation;
        int                     sk_route_caps;
        int                     sk_gso_type;
+       unsigned int            sk_gso_max_size;
        int                     sk_rcvlowat;
        unsigned long           sk_flags;
        unsigned long           sk_lingertime;
@@ -849,6 +856,7 @@ extern struct sock          *sk_alloc(struct net *net, int family,
                                          gfp_t priority,
                                          struct proto *prot);
 extern void                    sk_free(struct sock *sk);
+extern void                    sk_release_kernel(struct sock *sk);
 extern struct sock             *sk_clone(const struct sock *sk,
                                          const gfp_t priority);
 
@@ -1332,6 +1340,18 @@ static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_e
 }
 #endif
 
+/*
+ * Kernel sockets, f.e. rtnl or icmp_socket, are a part of a namespace.
+ * They should not hold a referrence to a namespace in order to allow
+ * to stop it.
+ * Sockets after sk_change_net should be released using sk_release_kernel
+ */
+static inline void sk_change_net(struct sock *sk, struct net *net)
+{
+       put_net(sk->sk_net);
+       sk->sk_net = net;
+}
+
 extern void sock_enable_timestamp(struct sock *sk);
 extern int sock_get_timestamp(struct sock *, struct timeval __user *);
 extern int sock_get_timestampns(struct sock *, struct timespec __user *);