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bfdd: Only apply increased transmission interval after Poll Sequence

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If bfd.DesiredMinTxInterval is increased and bfd.SessionState is Up, the actual transmission interval used MUST NOT change until the Poll Sequence described above has terminated.

Signed-off-by: zmw12306 <zmw12306@gmail.com>
This commit is contained in:
zmw12306 2025-04-06 01:47:57 -04:00
parent 44c4743e08
commit 27292c0dc1
1 changed files with 8 additions and 0 deletions
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8
bfdd/bfd.c
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@ -1458,6 +1458,8 @@ void bs_echo_timer_handler(struct bfd_session *bs)
*/
void bs_final_handler(struct bfd_session *bs)
{
uint64_t old_xmt_TO = bs->xmt_TO;
/* Start using our new timers. */
bs->cur_timers.desired_min_tx = bs->timers.desired_min_tx;
bs->cur_timers.required_min_rx = bs->timers.required_min_rx;
@ -1485,6 +1487,12 @@ void bs_final_handler(struct bfd_session *bs)
bs->xmt_TO = bs->timers.desired_min_tx;
else
bs->xmt_TO = bs->remote_timers.required_min_rx;
/* Only apply increased transmission interval after Poll Sequence */
if (bs->ses_state == PTM_BFD_UP && bs->xmt_TO > old_xmt_TO) {
bs->xmt_TO = old_xmt_TO; /* Keep old timing until Poll Sequence done */
return;
}
/* Apply new transmission timer immediately. */
ptm_bfd_start_xmt_timer(bs, false);