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net: add netif_napi_del function to allow for removal of napistructs 

Adds netif_napi_del function which is used to remove the napi struct from
the netdev napi_list in cases where CONFIG_NETPOLL was enabled.
The motivation for adding this is to handle the case in which the number of
queues on a device changes due to a configuration change.  Previously the
napi structs for each queue would be left in the list until the netdev was
freed.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alexander Duyck 2008-07-08 15:13:05 -07:00 committed by Jeff Garzik
parent d335252027
commit d815653404
1 changed files with 13 additions and 0 deletions
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13
include/linux/netdevice.h
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@ -828,6 +828,19 @@ static inline void netif_napi_add(struct net_device *dev,
set_bit(NAPI_STATE_SCHED, &napi->state);
}
/**
* netif_napi_del - remove a napi context
* @napi: napi context
*
* netif_napi_del() removes a napi context from the network device napi list
*/
static inline void netif_napi_del(struct napi_struct *napi)
{
#ifdef CONFIG_NETPOLL
list_del(&napi->dev_list);
#endif
}
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
struct net_device *dev; /* NULL is wildcarded here */