tree 7c3929c15a8bc5256ca7aafd87f6ba059562ef23
parent 52ecd6e0c254ff6d0f8baa20c33d29b0bcd7d408
author Nicholas Nunley <nicholas.d.nunley@intel.com> 1551428131 -0800
committer John W. Linville <linville@tuxdriver.com> 1552588286 -0400

ethtool: support per-queue sub command --coalesce

This patch adds the ability to configure the coalesce settings from
do_scoalesce on a per-queue basis.

For each masked queue the current settings are read, modified, and written
back to the kernel.

Example:

 $ sudo ./ethtool --per-queue eth5 queue_mask 0x1 --coalesce
 rx-usecs 10 tx-usecs 5
 $ sudo ./ethtool --per-queue eth5 queue_mask 0x1 --show-coalesce

 Queue: 0
 Adaptive RX: on  TX: on
 stats-block-usecs: 0
 sample-interval: 0
 pkt-rate-low: 0
 pkt-rate-high: 0

 rx-usecs: 10
 rx-frames: 0
 rx-usecs-irq: 0
 rx-frames-irq: 256

 tx-usecs: 5
 tx-frames: 0
 tx-usecs-irq: 0
 tx-frames-irq: 256

 rx-usecs-low: 0
 rx-frame-low: 0
 tx-usecs-low: 0
 tx-frame-low: 0

 rx-usecs-high: 0
 rx-frame-high: 0
 tx-usecs-high: 0
 tx-frame-high: 0

Based on patch by Kan Liang <kan.liang@intel.com>

Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>