Merge branch 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block

[linux-2.6-omap-h63xx.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e432b743dda24e8a0cacc263f4790d2fdb73cc6e..76cc099c8580fa06551f98f0ec2635f2c2a85496 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -34,7 +34,6 @@
 #include <asm/cache.h>
 #include <asm/byteorder.h>
 
-#include <linux/config.h>
 #include <linux/device.h>
 #include <linux/percpu.h>
 #include <linux/dmaengine.h>
@@ -233,6 +232,7 @@ enum netdev_state_t
        __LINK_STATE_RX_SCHED,
        __LINK_STATE_LINKWATCH_PENDING,
        __LINK_STATE_DORMANT,
+       __LINK_STATE_QDISC_RUNNING,
 };
 
 
@@ -308,9 +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_GSO_MASK       0xffff0000
+#define NETIF_F_TSO            (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_UFO            (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
+#define NETIF_F_GSO_ROBUST     (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
+#define NETIF_F_TSO_ECN                (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
+#define NETIF_F_TSO6           (SKB_GSO_TCPV6 << 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)
@@ -402,6 +410,9 @@ 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;
@@ -536,6 +547,9 @@ 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;
 };
@@ -686,11 +700,11 @@ 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);
 
-extern int             netdev_nit;
 extern int             netdev_budget;
 
 /* Called by rtnetlink.c:rtnl_unlock() */
@@ -960,6 +974,7 @@ 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
@@ -979,6 +994,24 @@ extern void dev_seq_stop(struct seq_file *seq, void *v);
 
 extern void linkwatch_run_queue(void);
 
+static inline int net_gso_ok(int features, int gso_type)
+{
+       int feature = gso_type << NETIF_F_GSO_SHIFT;
+       return (features & feature) == feature;
+}
+
+static inline int skb_gso_ok(struct sk_buff *skb, int features)
+{
+       return net_gso_ok(features, skb_shinfo(skb)->gso_type);
+}
+
+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 */