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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-03-28 14:29:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:28:26 -0700 |
| commit | c45d286e72dd72c0229dc9e2849743ba427fee84 (patch) | |
| tree | 1fb22a5e71c89043671380087def5bc419a37886 /include | |
| parent | f85958151900f9d30fa5ff941b0ce71eaa45a7de (diff) | |
| download | lwn-c45d286e72dd72c0229dc9e2849743ba427fee84.tar.gz lwn-c45d286e72dd72c0229dc9e2849743ba427fee84.zip | |
[NET]: Inline net_device_stats
Network drivers which keep stats allocate their own stats structure
then write a get_stats() function to return them. It would be nice if
this were done by default.
1) Add a new "stats" field to "struct net_device".
2) Add a new feature field to say "this driver uses the internal one"
3) Have a default "get_stats" which returns NULL if that feature not set.
4) Change callers to check result of get_stats call for NULL, not if
->get_stats is set.
This should not break backwards compatibility with older drivers, yet
allow modern drivers to shed some boilerplate code.
Lightly tested: works for a modified lguest network driver.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 1a528548cd1d..71fc8ff4888b 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -323,6 +323,7 @@ struct net_device #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ #define NETIF_F_GSO 2048 /* Enable software GSO. */ #define NETIF_F_LLTX 4096 /* LockLess TX */ +#define NETIF_F_INTERNAL_STATS 8192 /* Use stats structure in net_device */ /* Segmentation offload features */ #define NETIF_F_GSO_SHIFT 16 @@ -347,6 +348,7 @@ struct net_device struct net_device_stats* (*get_stats)(struct net_device *dev); + struct net_device_stats stats; /* List of functions to handle Wireless Extensions (instead of ioctl). * See <net/iw_handler.h> for details. Jean II */ |