Merge remote-tracking branch 'lsk/v3.10/topic/arm64-hugepages' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / include / net / sock.h

diff --git a/include/net/sock.h b/include/net/sock.h
index 5c97b0fc5623aa4bb44db9082d6631ad0a27fafe..8f32b779bc83f4a1b1d71adaf6ce3401bf049d7c 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -230,6 +230,7 @@ struct cg_proto;
   *    @sk_wmem_queued: persistent queue size
   *    @sk_forward_alloc: space allocated forward
   *    @sk_allocation: allocation mode
+  *    @sk_pacing_rate: Pacing rate (if supported by transport/packet scheduler)
   *    @sk_sndbuf: size of send buffer in bytes
   *    @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE,
   *               %SO_OOBINLINE settings, %SO_TIMESTAMPING settings
@@ -355,6 +356,7 @@ struct sock {
        kmemcheck_bitfield_end(flags);
        int                     sk_wmem_queued;
        gfp_t                   sk_allocation;
+       u32                     sk_pacing_rate; /* bytes per second */
        netdev_features_t       sk_route_caps;
        netdev_features_t       sk_route_nocaps;
        int                     sk_gso_type;
@@ -866,6 +868,18 @@ 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
  * transport -> network interface is defined by struct inet_proto
@@ -1423,6 +1437,11 @@ static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb)
  */
 #define sock_owned_by_user(sk) ((sk)->sk_lock.owned)
 
+static inline void sock_release_ownership(struct sock *sk)
+{
+       sk->sk_lock.owned = 0;
+}
+
 /*
  * Macro so as to not evaluate some arguments when
  * lockdep is not enabled.