[net-next,v6,0/2] axienet NAPI improvements

Message

Robert Hancock May 11, 2022, 6:44 p.m. UTC

Changes to support TX NAPI in the axienet driver, as well as fixing
a potential concurrency issue in the TX ring pointer handling.

Supersedes v5 of the individual patch
"net: axienet: Use NAPI for TX completion path".

Changed since v5: Replaced spinlock with fixes to the way the TX ring
tail pointer is updated, and broke those changes into a separate patch.

Changed since v4: Added locking to protect TX ring tail pointer against
concurrent access by TX transmit and TX poll paths.

Changed since v3: Fixed references to renamed function in comments

Changed since v2: Use separate TX and RX NAPI poll handlers to keep
completion handling on same CPU as TX/RX IRQ. Added hard/soft IRQ
benchmark information to commit message.

Changed since v1: Added benchmark information to commit message, no
code changes.

Robert Hancock (2):
  net: axienet: Be more careful about updating tx_bd_tail
  net: axienet: Use NAPI for TX completion path

 drivers/net/ethernet/xilinx/xilinx_axienet.h  |  54 +++---
 .../net/ethernet/xilinx/xilinx_axienet_main.c | 165 ++++++++++--------
 2 files changed, 124 insertions(+), 95 deletions(-)