Files
linux/drivers
MD Danish Anwar dcb3fba6fa net: ti: icssg_prueth: Add SW TX / RX Coalescing based on hrtimers
Add SW IRQ coalescing based on hrtimers for RX and TX data path for ICSSG
driver, which can be enabled by ethtool commands:

- RX coalescing
  ethtool -C eth1 rx-usecs 50

- TX coalescing can be enabled per TX queue

  - by default enables coalescing for TX0
  ethtool -C eth1 tx-usecs 50
  - configure TX0
  ethtool -Q eth0 queue_mask 1 --coalesce tx-usecs 100
  - configure TX1
  ethtool -Q eth0 queue_mask 2 --coalesce tx-usecs 100
  - configure TX0 and TX1
  ethtool -Q eth0 queue_mask 3 --coalesce tx-usecs 100 --coalesce
tx-usecs 100

Minimum value for both rx-usecs and tx-usecs is 20us.

Compared to gro_flush_timeout and napi_defer_hard_irqs this patch allows
to enable IRQ coalescing for RX path separately.

Benchmarking numbers:
 ===============================================================
| Method                  | Tput_TX | CPU_TX | Tput_RX | CPU_RX |
| ==============================================================
| Default Driver           943 Mbps    31%      517 Mbps  38%   |
| IRQ Coalescing (Patch)   943 Mbps    28%      518 Mbps  25%   |
 ===============================================================

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240430120634.1558998-1-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01 18:38:47 -07:00
..
2024-03-07 21:52:03 +00:00
2024-03-07 20:37:04 +00:00
2024-02-19 21:23:28 +01:00
2024-03-07 20:32:47 +00:00
2024-03-07 20:32:38 +00:00
2024-03-27 13:17:15 +01:00
2024-04-30 18:32:38 -07:00
2024-02-20 13:36:34 +01:00
2024-02-19 11:10:55 +01:00