Hi.
I'm trying to use hitbox (hxbt) to reproduce an issue, and although I'm
running this on Solaris 10, I'm getting an lbolt wrap issue. The source
was downloaded from
http://hub.opensolaris.org/bin/view/Community+Group+networking/.
Originally I was using the pre-compiled snv binaries, but I've also just
compiled from an S10 workspace in case there was some interface change,
etc... between s10 and snv.
After enabling either a delay (-l 200) or a bandwidth limitation (-b
200), I see "hxbt: WARNING: hxbt_timeout: lbolt wrap..." repeatedly on
the console.
The CE_WARN comes from hxbt_timeout:
/* Avoid lbolt wrap */
lbolt_wrap:
if ((pkt = ifp->hbif_pkt_q) != NULL && pkt->pkt_stime > cur_time) {
cmn_err(CE_WARN, "hxbt_timeout: lbolt wrap (%lld,
%lld)...\n",
pkt->pkt_stime, cur_time);
while (pkt != NULL) {
putnext(ifp->hbif_wq, pkt->pkt_mp);
ifp->hbif_pkt_q = pkt->pkt_next;
kmem_free(pkt, sizeof (pkt_t));
pkt = ifp->hbif_pkt_q;
ifp->hbif_cnt--;
}
}
I've expanded the cmn_err to include the values used to come to this
conclusion, and they only differ by one:
Sep 7 14:13:02 nfsserver hxbt: WARNING: hxbt_timeout: lbolt wrap
(35361300, 35361299)...
Sep 7 14:13:02 nfsserver hxbt: WARNING: hxbt_timeout: lbolt wrap
(35361323, 35361322)...
Sep 7 14:13:03 nfsserver hxbt: WARNING: hxbt_timeout: lbolt wrap
(35361424, 35361423)...
Sep 7 14:13:04 nfsserver hxbt: WARNING: hxbt_timeout: lbolt wrap
(35361524, 35361523)...
Sep 7 14:13:06 nfsserver hxbt: WARNING: hxbt_timeout: lbolt wrap
(35361726, 35361725)...
I've also confirmed that the "goto lbolt_wrap" later in the same
function is not being used, so the above message is being produced on
entry to this function.
It seems that the pkt_stime is the time the packet should be sent, so it
is possible for this to be "in the future" according to cur_time, and
suggests to me that the timeout functionality is broken, unless the
delay is smaller than an lbolt increment (such that pkt_stime == cur_time).
Does anybody else have any experience of using hxbt with delays such as
200ms or above, or with the timeout/delay code?
Thanks,
Brian
--
Brian Ruthven
Solaris Network RPE (Sustaining)
Oracle UK
_______________________________________________
networking-discuss mailing list
[email protected]
