[PATCH net 0/2] mptcp: sync the msk->sndbuf at accept() time

From: Matthieu Baerts (NGI0)

Date: Mon Apr 20 2026 - 13:44:34 EST


On passive MPTCP connections, the MPTCP socket send buffer doesn't have
the expected size at accept() time.

Patch 1 fixes the regression introduced in v6.7, while the following one
validates the fix in the selftests.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
---
Gang Yan (2):
mptcp: sync the msk->sndbuf at accept() time
selftests: mptcp: add a check for sndbuf of S/C

net/mptcp/protocol.c | 2 +-
tools/testing/selftests/net/mptcp/diag.sh | 28 ++++++++++++++++++++++++++++
2 files changed, 29 insertions(+), 1 deletion(-)
---
base-commit: 0cf004ffb61cd32d140531c3a84afe975f9fc7ea
change-id: 20260420-net-mptcp-sync-sndbuf-accept-5079a6f9c407

Best regards,
--
Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>