From 537c00de1c9ba9876b91d869e84caceefe2b8bf9 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 10 Jan 2013 08:57:02 +0000 Subject: 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 Signed-off-by: David S. Miller --- include/linux/netdevice.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/netdevice.h') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 608c3ac4d04..59fe9da4e31 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. -- cgit v1.2.3-70-g09d2