linux-kernel - [PATCH net-next v3 0/7] bcm63xx_enet: major makeover of driver

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Date:   Wed,  6 Jan 2021 22:42:01 +0800
From:   Sieng Piaw Liew <liew.s.piaw@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     bcm-kernel-feedback-list@...adcom.com,
        Sieng Piaw Liew <liew.s.piaw@...il.com>,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next v3 0/7] bcm63xx_enet: major makeover of driver

This patch series aim to improve the bcm63xx_enet driver by integrating the
latest networking features, i.e. batched rx processing, BQL, build_skb,
etc.

The newer enetsw SoCs are found to be able to do unaligned rx DMA by adding
NET_IP_ALIGN padding which, combined with these patches, improved packet
processing performance by ~50% on BCM6328.

Older non-enetsw SoCs still benefit mainly from rx batching. Performance
improvement of ~30% is observed on BCM6333.

The BCM63xx SoCs are designed for routers. As such, having BQL is
beneficial as well as trivial to add.

v3:
* Simplify xmit_more patch by not moving around the code needlessly.
* Fix indentation in xmit_more patch.
* Fix indentation in build_skb patch.
* Split rx ring cleanup patch from build_skb patch and precede build_skb
  patch for better understanding, as suggested by Florian Fainelli.

v2:
* Add xmit_more support and rx loop improvisation patches.
* Moved BQL netdev_reset_queue() to bcm_enet_stop()/bcm_enetsw_stop()
  functions as suggested by Florian Fainelli.
* Improved commit messages.

Sieng Piaw Liew (7):
  bcm63xx_enet: batch process rx path
  bcm63xx_enet: add BQL support
  bcm63xx_enet: add xmit_more support
  bcm63xx_enet: alloc rx skb with NET_IP_ALIGN
  bcm63xx_enet: consolidate rx SKB ring cleanup code
  bcm63xx_enet: convert to build_skb
  bcm63xx_enet: improve rx loop

 drivers/net/ethernet/broadcom/bcm63xx_enet.c | 186 +++++++++----------
 drivers/net/ethernet/broadcom/bcm63xx_enet.h |  14 +-
 2 files changed, 103 insertions(+), 97 deletions(-)

-- 
2.17.1