Recently, during a debugging session using local MPTCP connections, I
noticed MPJoinAckHMacFailure was strangely not zero on the server side.

The first patch fixes this issue -- present since v5.9 -- and the second
one validates it in the selftests.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
Matthieu Baerts (NGI0) (2):
      mptcp: only inc MPJoinAckHMacFailure for HMAC failures
      selftests: mptcp: validate MPJoin HMacFailure counters

 net/mptcp/subflow.c                             |  8 ++++++--
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+), 2 deletions(-)
---
base-commit: 61f96e684edd28ca40555ec49ea1555df31ba619
change-id: 20250407-net-mptcp-hmac-failure-mib-66f599305ff3

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

Hello:

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

On Mon, 07 Apr 2025 20:26:31 +0200 you wrote:
> Recently, during a debugging session using local MPTCP connections, I
> noticed MPJoinAckHMacFailure was strangely not zero on the server side.
> 
> The first patch fixes this issue -- present since v5.9 -- and the second
> one validates it in the selftests.
> 
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
> 
> [...]

Here is the summary with links:
  - [net,1/2] mptcp: only inc MPJoinAckHMacFailure for HMAC failures
    https://git.kernel.org/netdev/net/c/21c02e8272bc
  - [net,2/2] selftests: mptcp: validate MPJoin HMacFailure counters
    https://git.kernel.org/netdev/net/c/6767698cf9c1

You are awesome, thank you!
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