[PATCH net-next 0/5] mptcp: support MSG_EOR and small cleanups

[PATCH net-next 0/5] mptcp: support MSG_EOR and small cleanups

[Matthieu Baerts (NGI0)]

This series contains various unrelated patches:

- Patches 1 & 2: support MSG_EOR instead of ignoring it.

- Patch 3: avoid duplicated code in TCP and MPTCP by using a new helper.

- Patch 4: remove duplicated condition.

- Patch 5: adapt test to reproduce bug and increase code coverage.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
Gang Yan (2):
      mptcp: reduce 'overhead' from u16 to u8
      mptcp: preserve MSG_EOR semantics in sendmsg path

Geliang Tang (1):
      tcp: add recv_should_stop helper

Matthieu Baerts (NGI0) (2):
      mptcp: pm: in-kernel: remove mptcp_pm_has_addr_attr_id
      selftests: mptcp: join: recreate signal endp with same ID

 include/net/tcp.h                               |  8 +++++
 net/ipv4/tcp.c                                  |  9 ++----
 net/mptcp/pm_kernel.c                           | 24 +++------------
 net/mptcp/protocol.c                            | 41 ++++++++++++++++++-------
 net/mptcp/protocol.h                            |  3 +-
 tools/testing/selftests/net/mptcp/mptcp_join.sh |  4 +--
 6 files changed, 49 insertions(+), 40 deletions(-)
---
base-commit: 8b0e64d6c9e7feec5ba5643b4fa8b7fd54464778
change-id: 20260403-net-next-mptcp-msg_eor-misc-6b4567dd37dc

Best regards,
--  
Matthieu Baerts (NGI0) <matttbe@kernel.org>

[PATCH net-next 5/5] selftests: mptcp: join: recreate signal endp with same ID

[Matthieu Baerts (NGI0)]

In this "delete re-add signal" MPTCP Join subtest, the endpoint linked
to the initial subflow is removed, but readded once with different ID.

It appears that there was an issue when reusing the same ID, recently
fixed by commit d191101dee25 ("mptcp: pm: in-kernel: always set ID as
avail when rm endp"). The test then now reuses the same ID the first
time, but continue to use another one (88) the second time.

This should then cover more cases.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/615
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
To: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index a3144d7298a5..beec41f6662a 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -4343,13 +4343,13 @@ endpoint_tests()
 		chk_mptcp_info add_addr_signal 2 add_addr_accepted 2
 		[ ${ipt} = 1 ] && ip netns exec "${ns1}" ${iptables} -D OUTPUT 1
 
-		pm_nl_add_endpoint $ns1 10.0.1.1 id 99 flags signal
+		pm_nl_add_endpoint $ns1 10.0.1.1 id 42 flags signal
 		wait_mpj 4
 		chk_subflow_nr "after re-add ID 0" 3
 		chk_mptcp_info subflows 3 subflows 3
 		chk_mptcp_info add_addr_signal 3 add_addr_accepted 2
 
-		pm_nl_del_endpoint $ns1 99 10.0.1.1
+		pm_nl_del_endpoint $ns1 42 10.0.1.1
 		sleep 0.5
 		chk_subflow_nr "after re-delete ID 0" 2
 		chk_mptcp_info subflows 2 subflows 2

-- 
2.53.0

Re: [PATCH net-next 0/5] mptcp: support MSG_EOR and small cleanups

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Fri, 03 Apr 2026 13:29:26 +0200 you wrote:
> This series contains various unrelated patches:
> 
> - Patches 1 & 2: support MSG_EOR instead of ignoring it.
> 
> - Patch 3: avoid duplicated code in TCP and MPTCP by using a new helper.
> 
> - Patch 4: remove duplicated condition.
> 
> [...]

Here is the summary with links:
  - [net-next,1/5] mptcp: reduce 'overhead' from u16 to u8
    https://git.kernel.org/netdev/net-next/c/00d46be3c319
  - [net-next,2/5] mptcp: preserve MSG_EOR semantics in sendmsg path
    https://git.kernel.org/netdev/net-next/c/7fb2f5f96499
  - [net-next,3/5] tcp: add recv_should_stop helper
    https://git.kernel.org/netdev/net-next/c/eb477fdd6803
  - [net-next,4/5] mptcp: pm: in-kernel: remove mptcp_pm_has_addr_attr_id
    (no matching commit)
  - [net-next,5/5] selftests: mptcp: join: recreate signal endp with same ID
    https://git.kernel.org/netdev/net-next/c/c4a5cb2f00f9

You are awesome, thank you!
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