Merge to Fedora kernel-2.6.17-1.2187_FC5 patched with stable patch-2.6.17.13-vs2...

[linux-2.6.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f4169bb..c5b97cf 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -232,6 +232,7 @@ enum netdev_state_t
        __LINK_STATE_RX_SCHED,
        __LINK_STATE_LINKWATCH_PENDING,
        __LINK_STATE_DORMANT,
+       __LINK_STATE_QDISC_RUNNING,
 };
 
 
@@ -307,9 +308,17 @@ struct net_device
 #define NETIF_F_HW_VLAN_RX     256     /* Receive VLAN hw acceleration */
 #define NETIF_F_HW_VLAN_FILTER 512     /* Receive filtering on VLAN */
 #define NETIF_F_VLAN_CHALLENGED        1024    /* Device cannot handle VLAN packets */
-#define NETIF_F_TSO            2048    /* Can offload TCP/IP segmentation */
+#define NETIF_F_GSO            2048    /* Enable software GSO. */
 #define NETIF_F_LLTX           4096    /* LockLess TX */
-#define NETIF_F_UFO             8192    /* Can offload UDP Large Send*/
+
+       /* Segmentation offload features */
+#define NETIF_F_GSO_SHIFT      16
+#define NETIF_F_TSO            (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_UFO            (SKB_GSO_UDPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_GSO_ROBUST     (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
+
+#define NETIF_F_GEN_CSUM       (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
+#define NETIF_F_ALL_CSUM       (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
 
        struct net_device       *next_sched;
 
@@ -398,6 +407,9 @@ struct net_device
        struct list_head        qdisc_list;
        unsigned long           tx_queue_len;   /* Max frames per queue allowed */
 
+       /* Partially transmitted GSO packet. */
+       struct sk_buff          *gso_skb;
+
        /* ingress path synchronizer */
        spinlock_t              ingress_lock;
        struct Qdisc            *qdisc_ingress;
@@ -406,7 +418,7 @@ struct net_device
  * One part is mostly used on xmit path (device)
  */
        /* hard_start_xmit synchronizer */
-       spinlock_t              xmit_lock ____cacheline_aligned_in_smp;
+       spinlock_t              _xmit_lock ____cacheline_aligned_in_smp;
        /* cpu id of processor entered to hard_start_xmit or -1,
           if nobody entered there.
         */
@@ -532,6 +544,9 @@ struct packet_type {
                                         struct net_device *,
                                         struct packet_type *,
                                         struct net_device *);
+       struct sk_buff          *(*gso_segment)(struct sk_buff *skb,
+                                               int features);
+       int                     (*gso_send_check)(struct sk_buff *skb);
        void                    *af_packet_priv;
        struct list_head        list;
 };
@@ -679,7 +694,8 @@ extern int          dev_change_name(struct net_device *, char *);
 extern int             dev_set_mtu(struct net_device *, int);
 extern int             dev_set_mac_address(struct net_device *,
                                            struct sockaddr *);
-extern void            dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev);
+extern int             dev_hard_start_xmit(struct sk_buff *skb,
+                                           struct net_device *dev);
 
 extern void            dev_init(void);
 
@@ -889,11 +905,43 @@ static inline void __netif_rx_complete(struct net_device *dev)
        clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
 }
 
+static inline void netif_tx_lock(struct net_device *dev)
+{
+       spin_lock(&dev->_xmit_lock);
+       dev->xmit_lock_owner = smp_processor_id();
+}
+
+static inline void netif_tx_lock_bh(struct net_device *dev)
+{
+       spin_lock_bh(&dev->_xmit_lock);
+       dev->xmit_lock_owner = smp_processor_id();
+}
+
+static inline int netif_tx_trylock(struct net_device *dev)
+{
+       int ok = spin_trylock(&dev->_xmit_lock);
+       if (likely(ok))
+               dev->xmit_lock_owner = smp_processor_id();
+       return ok;
+}
+
+static inline void netif_tx_unlock(struct net_device *dev)
+{
+       dev->xmit_lock_owner = -1;
+       spin_unlock(&dev->_xmit_lock);
+}
+
+static inline void netif_tx_unlock_bh(struct net_device *dev)
+{
+       dev->xmit_lock_owner = -1;
+       spin_unlock_bh(&dev->_xmit_lock);
+}
+
 static inline void netif_tx_disable(struct net_device *dev)
 {
-       spin_lock_bh(&dev->xmit_lock);
+       netif_tx_lock_bh(dev);
        netif_stop_queue(dev);
-       spin_unlock_bh(&dev->xmit_lock);
+       netif_tx_unlock_bh(dev);
 }
 
 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
@@ -921,6 +969,7 @@ extern int          netdev_max_backlog;
 extern int             weight_p;
 extern int             netdev_set_master(struct net_device *dev, struct net_device *master);
 extern int skb_checksum_help(struct sk_buff *skb, int inward);
+extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
 #ifdef CONFIG_BUG
 extern void netdev_rx_csum_fault(struct net_device *dev);
 #else
@@ -940,6 +989,19 @@ extern void dev_seq_stop(struct seq_file *seq, void *v);
 
 extern void linkwatch_run_queue(void);
 
+static inline int skb_gso_ok(struct sk_buff *skb, int features)
+{
+       int feature = skb_shinfo(skb)->gso_type << NETIF_F_GSO_SHIFT;
+       return (features & feature) == feature;
+}
+
+static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
+{
+       return skb_is_gso(skb) &&
+              (!skb_gso_ok(skb, dev->features) ||
+               unlikely(skb->ip_summed != CHECKSUM_HW));
+}
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_DEV_H */