diff options
| author | Paolo Abeni <[email protected]> | 2025-07-23 14:32:23 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-07-25 18:29:04 +0000 |
| commit | c65c2e3bae6912b6baf8ea12eeace220e8e99b47 (patch) | |
| tree | 9af001acf5192384bc9ce9f5597de5010854cd7d /net/mptcp/options.c | |
| parent | selftests: net: Skip test if IPv6 is not configured (diff) | |
| download | kernel-c65c2e3bae6912b6baf8ea12eeace220e8e99b47.tar.gz kernel-c65c2e3bae6912b6baf8ea12eeace220e8e99b47.zip | |
mptcp: track fallbacks accurately via mibs
Add the mibs required to cover the few possible fallback causes still
lacking suck info.
Move the relevant mib increment into the fallback helper, so that no
eventual future fallback operation will miss a paired mib increment.
Additionally track failed fallback via its own mib, such mib is
incremented only when a fallback mandated by the protocol fails - due to
racing subflow creation.
While at the above, rename an existing helper to reduce long lines
problems all along.
Signed-off-by: Paolo Abeni <[email protected]>
Reviewed-by: Matthieu Baerts (NGI0) <[email protected]>
Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
Link: https://patch.msgid.link/20250723-net-next-mptcp-track-fallbacks-v1-1-a83cce08f2d5@kernel.org
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'net/mptcp/options.c')
| -rw-r--r-- | net/mptcp/options.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 1f898888b223..6cf02344249a 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -978,8 +978,10 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *ssk, if (subflow->mp_join) goto reset; subflow->mp_capable = 0; - if (!mptcp_try_fallback(ssk)) + if (!mptcp_try_fallback(ssk, MPTCP_MIB_MPCAPABLEDATAFALLBACK)) { + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_FALLBACKFAILED); goto reset; + } pr_fallback(msk); return false; } |