linux-kernel - [PATCH v4 0/3] fix two issues and optimize code on tpacket

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Message-ID: <20250710102639.280932-1-luyun_611@163.com>
Date: Thu, 10 Jul 2025 18:26:36 +0800
From: Yun Lu <luyun_611@....com>
To: willemdebruijn.kernel@...il.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/3] fix two issues and optimize code on tpacket_snd()

From: Yun Lu <luyun@...inos.cn>

This series fix two issues and optimize the code on tpacket_snd():
1, fix the SO_SNDTIMEO constraint not effective;
2, fix a soft lockup issue on a specific edge case;
3, optimize the packet_read_pending function called on tpacket_snd().

---
Changes in v4:
- Fix a typo and add the missing semicolon. Thanks: Simon Horman. 
- Split the second patch into two, one to fix, another to optimize.
  Thanks: Willem de Bruijn
- Link to v3: https://lore.kernel.org/all/20250709095653.62469-1-luyun_611@163.com/

Changes in v3:
- Split in two different patches.
- Simplify the code and reuse ph to continue. Thanks: Eric Dumazet.
- Link to v2: https://lore.kernel.org/all/20250708020642.27838-1-luyun_611@163.com/

Changes in v2:
- Add a Fixes tag.
- Link to v1: https://lore.kernel.org/all/20250707081629.10344-1-luyun_611@163.com/

Yun Lu (3):
  af_packet: fix the SO_SNDTIMEO constraint not effective on
    tpacked_snd()
  af_packet: fix soft lockup issue caused by tpacket_snd()
  af_packet: optimize the packet_read_pending function called on
    tpacket_snd()

 net/packet/af_packet.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

-- 
2.43.0