diff options
| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2013-01-10 08:57:02 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-01-10 22:47:03 -0800 |
| commit | 537c00de1c9ba9876b91d869e84caceefe2b8bf9 (patch) | |
| tree | f808a5221aec07b3a0a01513e5de9d5cdc2a6b54 /include/linux/netdevice.h | |
| parent | net: Split core bits of netdev_pick_tx into __netdev_pick_tx (diff) | |
| download | linux-dev-537c00de1c9ba9876b91d869e84caceefe2b8bf9.tar.xz linux-dev-537c00de1c9ba9876b91d869e84caceefe2b8bf9.zip | |
net: Add functions netif_reset_xps_queue and netif_set_xps_queue
This patch adds two functions, netif_reset_xps_queue and
netif_set_xps_queue. The main idea behind these two functions is to
provide a mechanism through which drivers can update their defaults in
regards to XPS.
Currently no such mechanism exists and as a result we cannot use XPS for
things such as ATR which would require a basic configuration to start in
which the Tx queues are mapped to CPUs via a 1:1 mapping. With this change
I am making it possible for drivers such as ixgbe to be able to use the XPS
feature by controlling the default configuration.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 608c3ac4d045..59fe9da4e315 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2103,6 +2103,19 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) __netif_schedule(txq->qdisc); } +#ifdef CONFIG_XPS +extern void netif_reset_xps_queue(struct net_device *dev, u16 index); +extern int netif_set_xps_queue(struct net_device *dev, struct cpumask *mask, + u16 index); +#else +static inline int netif_set_xps_queue(struct net_device *dev, + struct cpumask *mask, + u16 index) +{ + return 0; +} +#endif + /* * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used * as a distribution range limit for the returned value. |