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Diffstat (limited to 'include/linux/netdevice.h')
-rw-r--r--include/linux/netdevice.h85
1 files changed, 78 insertions, 7 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index cebe677e153b..85f99f60deea 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -36,6 +36,7 @@
#include <linux/device.h>
#include <linux/percpu.h>
+#include <linux/dmaengine.h>
struct divert_blk;
struct vlan_group;
@@ -231,6 +232,7 @@ enum netdev_state_t
__LINK_STATE_RX_SCHED,
__LINK_STATE_LINKWATCH_PENDING,
__LINK_STATE_DORMANT,
+ __LINK_STATE_QDISC_RUNNING,
};
@@ -306,9 +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;
@@ -397,6 +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;
@@ -405,7 +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.
*/
@@ -531,6 +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;
};
@@ -592,6 +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);
@@ -678,11 +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() */
@@ -888,11 +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) */
@@ -920,6 +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
@@ -939,6 +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 */