summaryrefslogtreecommitdiffstats
path: root/include/linux/netdevice.h
diff options
context:
space:
mode:
authorRusty Russell <rusty@rustcorp.com.au>2007-03-28 14:29:08 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:28:26 -0700
commitc45d286e72dd72c0229dc9e2849743ba427fee84 (patch)
tree1fb22a5e71c89043671380087def5bc419a37886 /include/linux/netdevice.h
parentf85958151900f9d30fa5ff941b0ce71eaa45a7de (diff)
[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/linux/netdevice.h')
-rw-r--r--include/linux/netdevice.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1a528548cd1..71fc8ff4888 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 */