4.19-stable review patch. If anyone has any objections, please let me know.
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From: Xin Long lucien.xin@gmail.com
[ Upstream commit 1f4e803cd9c9166eb8b6c8b0b8e4124f7499fc07 ]
Currently, when hb_interval is changed by users, it won't take effect until the next expiry of hb timer. As the default value is 30s, users have to wait up to 30s to wait its hb_interval update to work.
This becomes pretty bad in containers where a much smaller value is usually set on hb_interval. This patch improves it by resetting the hb timer immediately once the value of hb_interval is updated by users.
Note that we don't address the already existing 'problem' when sending a heartbeat 'on demand' if one hb has just been sent(from the timer) mentioned in:
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg590224.html
Signed-off-by: Xin Long lucien.xin@gmail.com Reviewed-by: Simon Horman horms@kernel.org Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Link: https://lore.kernel.org/r/75465785f8ee5df2fb3acdca9b8fafdc18984098.169617266... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/sctp/socket.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 432dccd375064..f954d3c8876db 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -2578,6 +2578,7 @@ static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params, if (trans) { trans->hbinterval = msecs_to_jiffies(params->spp_hbinterval); + sctp_transport_reset_hb_timer(trans); } else if (asoc) { asoc->hbinterval = msecs_to_jiffies(params->spp_hbinterval);