Hi Herbert,
thanks for the patch. Independently, I was working on different one which
should do the same for ikev2 and now I extend it to ikev1 picking up bits from
your patch.
test the master? The commits are fe03bd4d6d4c2e78fa621a76be4f1b360c588e16,
a2d0e225ed67d202 + cd1a26feb1e68995428ad72f3c238047d7a36e40
It will also take care of the case where you want stop after retransmit-timeout
, e.g
retransmit-timeout=2s
retransmit-interval=100
will stop around 2 seconds.
-antony
On Tue, Apr 21, 2015 at 05:08:22PM +0800, Herbert Xu wrote:
> The commit 09de73638a62207c268482982fce7ee96a9d6ba1 ("pluto:
> first attempt to replace pluto select loop with libevent") causes
> pluto to retransmit forever.
>
> This patch fixes this by stopping retransmissions after the count
> reaches MAXIMUM_RETRANSMITS_PER_EXCHANGE.
>
> diff --git a/programs/pluto/timer.c b/programs/pluto/timer.c
> index 700b018..f4299a9 100644
> --- a/programs/pluto/timer.c
> +++ b/programs/pluto/timer.c
> @@ -62,6 +62,9 @@ static unsigned long retrans_delay(struct state *st,
> unsigned long delay_ms)
> unsigned long delay_cap = deltamillisecs(c->r_timeout); /* ms */
> u_int8_t x = st->st_retransmit++; /* ??? odd type */
>
> + if (x > MAXIMUM_RETRANSMITS_PER_EXCHANGE)
> + return 0;
> +
> /*
> * Very carefully calculate capped exponential backoff.
> * The test is expressed as a right shift to avoid overflow.
> @@ -70,8 +73,7 @@ static unsigned long retrans_delay(struct state *st,
> unsigned long delay_ms)
> * Surely a bound of 12 (factor of 2048) is safe and more than enough.
> */
>
> - delay_ms = (x > MAXIMUM_RETRANSMITS_PER_EXCHANGE ||
> - delay_cap >> x < delay_ms) ?
> + delay_ms = delay_cap >> x < delay_ms ?
> delay_cap : delay_ms << x;
>
> whack_log(RC_RETRANSMISSION,
> @@ -128,8 +130,10 @@ static void retransmit_v1_msg(struct state *st)
> delay_ms = c->r_interval;
> }
>
> + if (delay_ms != 0)
> + delay_ms = retrans_delay(st, delay_ms);
> +
> if (delay_ms != 0) {
> - delay_ms = retrans_delay(st, delay_ms);
> resend_ike_v1_msg(st, "EVENT_v1_RETRANSMIT");
> event_schedule_ms(EVENT_v1_RETRANSMIT, delay_ms, st);
> } else {
> @@ -241,8 +245,10 @@ static void retransmit_v2_msg(struct state *st)
> delay_ms = c->r_interval;
> }
>
> + if (delay_ms != 0)
> + delay_ms = retrans_delay(st, delay_ms);
> +
> if (delay_ms != 0) {
> - delay_ms = retrans_delay(st, delay_ms);
> send_ike_msg(st, "EVENT_v2_RETRANSMIT");
> event_schedule_ms(EVENT_v2_RETRANSMIT, delay_ms, st);
> return;
> --
> Email: Herbert Xu <[email protected]>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
> _______________________________________________
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