Merge git://git.infradead.org/mtd-2.6

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

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f4169bbb60eb8036d021ba64e9270f6b5ffcaabb..85f99f60deea46c3f5af0f24f9c3a806b51dfd7c 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -34,9 +34,9 @@
 #include <asm/cache.h>
 #include <asm/byteorder.h>
 
-#include <linux/config.h>
 #include <linux/device.h>
 #include <linux/percpu.h>
+#include <linux/dmaengine.h>
 
 struct divert_blk;
 struct vlan_group;
@@ -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 +308,20 @@ 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)
 
        struct net_device       *next_sched;
 
@@ -398,6 +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;
@@ -406,7 +421,7 @@ 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 +547,8 @@ struct packet_type {
                                         struct net_device *,
                                         struct packet_type *,
                                         struct net_device *);
+       struct sk_buff          *(*gso_segment)(struct sk_buff *skb,
+                                               int features);
        void                    *af_packet_priv;
        struct list_head        list;
 };
@@ -593,6 +610,9 @@ struct softnet_data
        struct sk_buff          *completion_queue;
 
        struct net_device       backlog_dev;    /* Sorry. 8) */
+#ifdef CONFIG_NET_DMA
+       struct dma_chan         *net_dma;
+#endif
 };
 
 DECLARE_PER_CPU(struct softnet_data,softnet_data);
@@ -679,11 +699,11 @@ 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() */
@@ -889,11 +909,43 @@ 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 err = spin_trylock(&dev->_xmit_lock);
+       if (!err)
+               dev->xmit_lock_owner = smp_processor_id();
+       return err;
+}
+
+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 +973,7 @@ 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 +993,23 @@ 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_size ?
+                                   skb_shinfo(skb)->gso_type : 0);
+}
+
+static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
+{
+       return !skb_gso_ok(skb, dev->features);
+}
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_DEV_H */