dccp: limit sk_filter trim to payload

[pandora-kernel.git] / include / net / sock.h

diff --git a/include/net/sock.h b/include/net/sock.h
index 8e4062f..1444b52 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -46,7 +46,6 @@
 #include <linux/list_nulls.h>
 #include <linux/timer.h>
 #include <linux/cache.h>
-#include <linux/module.h>
 #include <linux/lockdep.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>      /* struct sk_buff */
@@ -76,8 +75,8 @@
                                        printk(KERN_DEBUG msg); } while (0)
 #else
 /* Validate arguments and do nothing */
-static inline void __attribute__ ((format (printf, 2, 3)))
-SOCK_DEBUG(struct sock *sk, const char *msg, ...)
+static inline __printf(2, 3)
+void SOCK_DEBUG(struct sock *sk, const char *msg, ...)
 {
 }
 #endif
@@ -304,6 +303,7 @@ struct sock {
                                sk_userlocks : 4,
                                sk_protocol  : 8,
                                sk_type      : 16;
+#define SK_PROTOCOL_MAX ((u8)~0U)
        kmemcheck_bitfield_end(flags);
        int                     sk_wmem_queued;
        gfp_t                   sk_allocation;
@@ -566,6 +566,8 @@ enum sock_flags {
        SOCK_ZEROCOPY, /* buffers from userspace */
 };
 
+#define SK_FLAGS_TIMESTAMP ((1UL << SOCK_TIMESTAMP) | (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE))
+
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)
 {
        nsk->sk_flags = osk->sk_flags;
@@ -638,12 +640,14 @@ static inline void __sk_add_backlog(struct sock *sk, struct sk_buff *skb)
 
 /*
  * Take into account size of receive queue and backlog queue
+ * Do not take into account this skb truesize,
+ * to allow even a single big packet to come.
  */
 static inline bool sk_rcvqueues_full(const struct sock *sk, const struct sk_buff *skb)
 {
        unsigned int qsize = sk->sk_backlog.len + atomic_read(&sk->sk_rmem_alloc);
 
-       return qsize + skb->truesize > sk->sk_rcvbuf;
+       return qsize > sk->sk_rcvbuf;
 }
 
 /* The per-socket spinlock must be held here. */
@@ -686,16 +690,25 @@ static inline void sock_rps_reset_flow(const struct sock *sk)
 #endif
 }
 
-static inline void sock_rps_save_rxhash(struct sock *sk, u32 rxhash)
+static inline void sock_rps_save_rxhash(struct sock *sk,
+                                       const struct sk_buff *skb)
 {
 #ifdef CONFIG_RPS
-       if (unlikely(sk->sk_rxhash != rxhash)) {
+       if (unlikely(sk->sk_rxhash != skb->rxhash)) {
                sock_rps_reset_flow(sk);
-               sk->sk_rxhash = rxhash;
+               sk->sk_rxhash = skb->rxhash;
        }
 #endif
 }
 
+static inline void sock_rps_reset_rxhash(struct sock *sk)
+{
+#ifdef CONFIG_RPS
+       sock_rps_reset_flow(sk);
+       sk->sk_rxhash = 0;
+#endif
+}
+
 #define sk_wait_event(__sk, __timeo, __condition)                      \
        ({      int __rc;                                               \
                release_sock(__sk);                                     \
@@ -720,6 +733,19 @@ struct request_sock_ops;
 struct timewait_sock_ops;
 struct inet_hashinfo;
 struct raw_hashinfo;
+struct module;
+
+/*
+ * caches using SLAB_DESTROY_BY_RCU should let .next pointer from nulls nodes
+ * un-modified. Special care is taken when initializing object to zero.
+ */
+static inline void sk_prot_clear_nulls(struct sock *sk, int size)
+{
+       if (offsetof(struct sock, sk_node.next) != 0)
+               memset(sk, 0, offsetof(struct sock, sk_node.next));
+       memset(&sk->sk_node.pprev, 0,
+              size - offsetof(struct sock, sk_node.pprev));
+}
 
 /* Networking protocol blocks we attach to sockets.
  * socket layer -> transport layer interface
@@ -1242,8 +1268,13 @@ static inline void sock_put(struct sock *sk)
                sk_free(sk);
 }
 
-extern int sk_receive_skb(struct sock *sk, struct sk_buff *skb,
-                         const int nested);
+int __sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested,
+                    unsigned int trim_cap);
+static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb,
+                                const int nested)
+{
+       return __sk_receive_skb(sk, skb, nested, 1);
+}
 
 static inline void sk_tx_queue_set(struct sock *sk, int tx_queue)
 {
@@ -1603,6 +1634,7 @@ extern void sk_reset_timer(struct sock *sk, struct timer_list* timer,
 
 extern void sk_stop_timer(struct sock *sk, struct timer_list* timer);
 
+int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
 extern int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
 
 extern int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb);