Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[linux-drm-fsl-dcu.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7f0ed423a3606f1cc13e09a00d332dc4a45f924b..5260d2eae2e6fae44b05bc0ef2f850a2105e3c21 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1282,6 +1282,9 @@ struct net_device {
 #endif
 #if IS_ENABLED(CONFIG_NET_DSA)
        struct dsa_switch_tree  *dsa_ptr;       /* dsa specific data */
+#endif
+#if IS_ENABLED(CONFIG_TIPC)
+       struct tipc_bearer __rcu *tipc_ptr;     /* TIPC specific data */
 #endif
        void                    *atalk_ptr;     /* AppleTalk link       */
        struct in_device __rcu  *ip_ptr;        /* IPv4 specific data   */
@@ -1673,7 +1676,7 @@ struct offload_callbacks {
        int                     (*gso_send_check)(struct sk_buff *skb);
        struct sk_buff          **(*gro_receive)(struct sk_buff **head,
                                               struct sk_buff *skb);
-       int                     (*gro_complete)(struct sk_buff *skb);
+       int                     (*gro_complete)(struct sk_buff *skb, int nhoff);
 };
 
 struct packet_offload {
@@ -2368,17 +2371,52 @@ static inline int netif_copy_real_num_queues(struct net_device *to_dev,
 #define DEFAULT_MAX_NUM_RSS_QUEUES     (8)
 int netif_get_num_default_rss_queues(void);
 
-/* Use this variant when it is known for sure that it
- * is executing from hardware interrupt context or with hardware interrupts
- * disabled.
- */
-void dev_kfree_skb_irq(struct sk_buff *skb);
+enum skb_free_reason {
+       SKB_REASON_CONSUMED,
+       SKB_REASON_DROPPED,
+};
 
-/* Use this variant in places where it could be invoked
- * from either hardware interrupt or other context, with hardware interrupts
- * either disabled or enabled.
+void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason);
+void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason);
+
+/*
+ * It is not allowed to call kfree_skb() or consume_skb() from hardware
+ * interrupt context or with hardware interrupts being disabled.
+ * (in_irq() || irqs_disabled())
+ *
+ * We provide four helpers that can be used in following contexts :
+ *
+ * dev_kfree_skb_irq(skb) when caller drops a packet from irq context,
+ *  replacing kfree_skb(skb)
+ *
+ * dev_consume_skb_irq(skb) when caller consumes a packet from irq context.
+ *  Typically used in place of consume_skb(skb) in TX completion path
+ *
+ * dev_kfree_skb_any(skb) when caller doesn't know its current irq context,
+ *  replacing kfree_skb(skb)
+ *
+ * dev_consume_skb_any(skb) when caller doesn't know its current irq context,
+ *  and consumed a packet. Used in place of consume_skb(skb)
  */
-void dev_kfree_skb_any(struct sk_buff *skb);
+static inline void dev_kfree_skb_irq(struct sk_buff *skb)
+{
+       __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED);
+}
+
+static inline void dev_consume_skb_irq(struct sk_buff *skb)
+{
+       __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED);
+}
+
+static inline void dev_kfree_skb_any(struct sk_buff *skb)
+{
+       __dev_kfree_skb_any(skb, SKB_REASON_DROPPED);
+}
+
+static inline void dev_consume_skb_any(struct sk_buff *skb)
+{
+       __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED);
+}
 
 int netif_rx(struct sk_buff *skb);
 int netif_rx_ni(struct sk_buff *skb);