netdev - [PATCH net-next 0/3] follow-up on deduplicate cookie logic

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Message-ID: <20250307033620.411611-1-willemdebruijn.kernel@gmail.com>
Date: Thu,  6 Mar 2025 22:34:07 -0500
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,
	dsahern@...nel.org,
	horms@...nel.org,
	Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next 0/3] follow-up on deduplicate cookie logic

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

1/3: I came across a leftover from cookie deduplication, due to UDP
having two code paths: lockless fast path and locked cork path.

3/3: Even though the leftover was in the fast path, this prompted me
to complete coverage to the cork path.

2/3: That uncovered a subtle API inconsistency in how dontfrag is
configured. It should not be possible to switch DF mid datagram.

Willem de Bruijn (3):
  ipv6: remove leftover ip6 cookie initializer
  ipv6: save dontfrag in cork
  selftests/net: expand cmsg_ip with MSG_MORE

 include/linux/ipv6.h                      |  1 +
 net/ipv6/ip6_output.c                     | 11 +++++------
 tools/testing/selftests/net/cmsg_ip.sh    | 11 +++++++----
 tools/testing/selftests/net/cmsg_sender.c | 24 ++++++++++++++++++-----
 4 files changed, 32 insertions(+), 15 deletions(-)

-- 
2.49.0.rc0.332.g42c0ae87b1-goog