diff options
| author |   Shardul Bankar <shardul.b@mpiricsoftware.com> | 2026-05-01 21:35:34 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2026-05-04 19:20:50 -0700 |
| commit | c4a99a921949cddc590b22bb14eeb23dffcc3ba6 (patch) | |
| tree | bfa45c88a07acd6f8473f84afc5a26bfb6152e4f /samples/kobject/ssh:/git@git.zx2c4.com/git: | |
| parent | vsock/virtio: fix potential unbounded skb queue (diff) | |
mptcp: use MPJoinSynAckHMacFailure for SynAck HMAC failure
In subflow_finish_connect(), HMAC validation of the server's HMAC
in SYN/ACK + MP_JOIN increments MPTCP_MIB_JOINACKMAC ("HMAC was
wrong on ACK + MP_JOIN") on failure. The function processes the
SYN/ACK, not the ACK; the matching MPTCP_MIB_JOINSYNACKMAC counter
("HMAC was wrong on SYN/ACK + MP_JOIN") exists but is not
incremented anywhere in the tree.
The mirror site on the server, subflow_syn_recv_sock(), already
uses JOINACKMAC correctly for ACK HMAC failure. Use JOINSYNACKMAC
at the SYN/ACK validation site so each counter reflects the packet
whose HMAC actually failed.
Suggested-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Fixes: fc518953bc9c ("mptcp: add and use MIB counter infrastructure")
Cc: stable@vger.kernel.org
Signed-off-by: Shardul Bankar <shardul.b@mpiricsoftware.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260501-net-mptcp-misc-fixes-7-1-rc3-v1-1-b70118df778e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'samples/kobject/ssh:/git@git.zx2c4.com/git:')
0 files changed, 0 insertions, 0 deletions