lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

netdev: add more functions to netdevice ops

Browse Source 
This patch moves neigh_setup and hard_start_xmit into the network device ops
structure. For bisection, fix all the previously converted drivers as well.
Bonding driver took the biggest hit on this.

Added a prefetch of the hard_start_xmit in the fast path to try and reduce
any impact this would have.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2008-11-20 20:14:53 -08:00
committed by David S. Miller
parent 6ab33d5171
commit 008298231a
36 changed files with 183 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
include/linux/netdevice.h
View File

@ -454,8 +454,8 @@ struct netdev_queue {
/*
* This structure defines the management hooks for network devices.
* The following hooks can bed defined and are optonal (can be null)
* unless otherwise noted.
* The following hooks can be defined; unless noted otherwise, they are
* optional and can be filled with a null pointer.
*
* int (*ndo_init)(struct net_device *dev);
* This function is called once when network device is registered.
@ -475,6 +475,15 @@ struct netdev_queue {
* This function is called when network device transistions to the down
* state.
*
* int (*ndo_hard_start_xmit)(struct sk_buff *skb, struct net_device *dev);
* Called when a packet needs to be transmitted.
* Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED,
* Required can not be NULL.
*
* u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
* Called to decide which queue to when device supports multiple
* transmit queues.
*
* void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
* This function is called to allow device receiver to make
* changes to configuration when multicast or promiscious is enabled.
@ -508,7 +517,7 @@ struct netdev_queue {
* of a device. If not defined, any request to change MTU will
* will return an error.
*
* void (*ndo_tx_timeout) (struct net_device *dev);
* void (*ndo_tx_timeout)(struct net_device *dev);
* Callback uses when the transmitter has not made any progress
* for dev->watchdog ticks.
*
@ -538,6 +547,10 @@ struct net_device_ops {
void (*ndo_uninit)(struct net_device *dev);
int (*ndo_open)(struct net_device *dev);
int (*ndo_stop)(struct net_device *dev);
int (*ndo_start_xmit) (struct sk_buff *skb,
struct net_device *dev);
u16 (*ndo_select_queue)(struct net_device *dev,
struct sk_buff *skb);
#define HAVE_CHANGE_RX_FLAGS
void (*ndo_change_rx_flags)(struct net_device *dev,
int flags);
@ -557,8 +570,10 @@ struct net_device_ops {
int (*ndo_set_config)(struct net_device *dev,
struct ifmap *map);
#define HAVE_CHANGE_MTU
int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
int (*ndo_change_mtu)(struct net_device *dev,
int new_mtu);
int (*ndo_neigh_setup)(struct net_device *dev,
struct neigh_parms *);
#define HAVE_TX_TIMEOUT
void (*ndo_tx_timeout) (struct net_device *dev);
@ -761,18 +776,12 @@ struct net_device
/* Number of TX queues currently active in device */
unsigned int real_num_tx_queues;
/* Map buffer to appropriate transmit queue */
u16 (*select_queue)(struct net_device *dev,
struct sk_buff *skb);
unsigned long tx_queue_len; /* Max frames per queue allowed */
spinlock_t tx_global_lock;
/*
* One part is mostly used on xmit path (device)
*/
void *priv; /* pointer to private data */
int (*hard_start_xmit) (struct sk_buff *skb,
struct net_device *dev);
/* These may be needed for future network-power-down code. */
unsigned long trans_start; /* Time (in jiffies) of last Tx */
@ -800,8 +809,6 @@ struct net_device
/* Called from unregister, can be used to call free_netdev */
void (*destructor)(struct net_device *dev);
int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
#ifdef CONFIG_NETPOLL
struct netpoll_info *npinfo;
#endif
@ -842,6 +849,10 @@ struct net_device
void (*uninit)(struct net_device *dev);
int (*open)(struct net_device *dev);
int (*stop)(struct net_device *dev);
int (*hard_start_xmit) (struct sk_buff *skb,
struct net_device *dev);
u16 (*select_queue)(struct net_device *dev,
struct sk_buff *skb);
void (*change_rx_flags)(struct net_device *dev,
int flags);
void (*set_rx_mode)(struct net_device *dev);
@ -854,6 +865,8 @@ struct net_device
int (*set_config)(struct net_device *dev,
struct ifmap *map);
int (*change_mtu)(struct net_device *dev, int new_mtu);
int (*neigh_setup)(struct net_device *dev,
struct neigh_parms *);
void (*tx_timeout) (struct net_device *dev);
struct net_device_stats* (*get_stats)(struct net_device *dev);
void (*vlan_rx_register)(struct net_device *dev,