diff options
| author | Matthieu Baerts (NGI0) <matttbe@kernel.org> | 2024-10-21 17:14:03 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-28 15:55:45 -0700 |
| commit | a42f3076648e0b507de9039f8085edcc10b35fb7 (patch) | |
| tree | a3dbd576b5feee4d13563f6eddc6c33da15d703c /net/mptcp/pm_netlink.c | |
| parent | fbb26ecc550200afcc15b121218fe7ec29bae219 (diff) | |
mptcp: pm: send ACK on non-stale subflows
If the subflow is considered as "staled", it is better to avoid it to
send an ACK carrying an ADD_ADDR or RM_ADDR. Another subflow, if any,
will then be selected.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241021-net-next-mptcp-misc-6-13-v1-1-1ef02746504a@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/pm_netlink.c')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index db586a5b3866..618289aac0ab 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -781,7 +781,7 @@ bool mptcp_pm_nl_is_init_remote_addr(struct mptcp_sock *msk, void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk) { - struct mptcp_subflow_context *subflow; + struct mptcp_subflow_context *subflow, *alt = NULL; msk_owned_by_me(msk); lockdep_assert_held(&msk->pm.lock); @@ -792,10 +792,18 @@ void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk) mptcp_for_each_subflow(msk, subflow) { if (__mptcp_subflow_active(subflow)) { - mptcp_pm_send_ack(msk, subflow, false, false); - break; + if (!subflow->stale) { + mptcp_pm_send_ack(msk, subflow, false, false); + return; + } + + if (!alt) + alt = subflow; } } + + if (alt) + mptcp_pm_send_ack(msk, alt, false, false); } int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk, |