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authorAlexander Duyck <alexander.h.duyck@intel.com>2018-07-09 12:19:32 -0400
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-07-09 11:33:41 -0700
commitd7be97756f8a4874ac17003de5843c742dd84153 (patch)
tree81e2c9b0f5c33f3ad53a1b4153015aae5d3926f0
parentc47078d6a33fd78d882200cdaacbcfcd63318234 (diff)
net-sysfs: Drop support for XPS and traffic_class on single queue device
This patch makes it so that we do not report the traffic class or allow XPS configuration on single queue devices. This is mostly to avoid unnecessary complexity with changes I have planned that will allow us to reuse the unused tc_to_txq and XPS configuration on a single queue device to allow it to make use of a subset of queues on an underlying device. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--net/core/net-sysfs.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index f25ac5ff48a6..dce3ae0fbca2 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1047,9 +1047,14 @@ static ssize_t traffic_class_show(struct netdev_queue *queue,
char *buf)
{
struct net_device *dev = queue->dev;
- int index = get_netdev_queue_index(queue);
- int tc = netdev_txq_to_tc(dev, index);
+ int index;
+ int tc;
+ if (!netif_is_multiqueue(dev))
+ return -ENOENT;
+
+ index = get_netdev_queue_index(queue);
+ tc = netdev_txq_to_tc(dev, index);
if (tc < 0)
return -EINVAL;
@@ -1214,6 +1219,9 @@ static ssize_t xps_cpus_show(struct netdev_queue *queue,
cpumask_var_t mask;
unsigned long index;
+ if (!netif_is_multiqueue(dev))
+ return -ENOENT;
+
index = get_netdev_queue_index(queue);
if (dev->num_tc) {
@@ -1260,6 +1268,9 @@ static ssize_t xps_cpus_store(struct netdev_queue *queue,
cpumask_var_t mask;
int err;
+ if (!netif_is_multiqueue(dev))
+ return -ENOENT;
+
if (!capable(CAP_NET_ADMIN))
return -EPERM;