netdev - [PATCH net-next 0/2] preserve MSG

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Message-ID: <20250630194312.1571410-1-willemdebruijn.kernel@gmail.com>
Date: Mon, 30 Jun 2025 15:42:10 -0400
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	horms@...nel.org,
	Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next 0/2] preserve MSG_ZEROCOPY with forwarding

From: Willem de Bruijn <willemb@...gle.com>

Avoid false positive copying of zerocopy skb frags when entering the
ingress path if the skb is not queued locally but forwarded.

Patch 1 for more details and feature.

Patch 2 converts the existing selftest to a pass/fail test and adds
        coverage for this new feature.

Willem de Bruijn (2):
  net: preserve MSG_ZEROCOPY with forwarding
  selftest: net: extend msg_zerocopy test with forwarding

 net/core/dev.c                              |  2 -
 net/ipv4/ip_input.c                         |  6 ++
 net/ipv6/ip6_input.c                        |  7 ++
 tools/testing/selftests/net/msg_zerocopy.c  | 24 +++---
 tools/testing/selftests/net/msg_zerocopy.sh | 84 +++++++++++++++------
 5 files changed, 90 insertions(+), 33 deletions(-)

-- 
2.50.0.727.gbf7dc18ff4-goog