Date: Wed, 15 Sep 2021 01:24:09 GMT From: Alexander Motin <mav@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 6c2d4404161a - main - ipmi(4): Limit maximum watchdog pre-timeout interval. Message-ID: <202109150124.18F1O9Lm014479@gitrepo.freebsd.org>
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The branch main has been updated by mav: URL: https://cgit.FreeBSD.org/src/commit/?id=6c2d4404161aa2bac1c7992afbf5a763f1a6f66e commit 6c2d4404161aa2bac1c7992afbf5a763f1a6f66e Author: Alexander Motin <mav@FreeBSD.org> AuthorDate: 2021-09-15 01:06:39 +0000 Commit: Alexander Motin <mav@FreeBSD.org> CommitDate: 2021-09-15 01:06:39 +0000 ipmi(4): Limit maximum watchdog pre-timeout interval. Previous code by default setting pre-timeout interval to 120 seconds made impossible to set timeout interval below that, resulting in error 0xcc (Invalid data field in Request) at least on Supermicro boards. To fix that limit maximum pre-timeout interval to ~1/4 of the timeout interval, that sounds like a reasonable default: not too short to fire too late, but also not too long to give many false reports. MFC after: 2 weeks --- sys/dev/ipmi/ipmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sys/dev/ipmi/ipmi.c b/sys/dev/ipmi/ipmi.c index 77baf652b4bc..a8f3e7f1be10 100644 --- a/sys/dev/ipmi/ipmi.c +++ b/sys/dev/ipmi/ipmi.c @@ -668,7 +668,8 @@ ipmi_set_watchdog(struct ipmi_softc *sc, unsigned int sec) req->ir_request[0] = IPMI_SET_WD_TIMER_DONT_STOP | IPMI_SET_WD_TIMER_SMS_OS; req->ir_request[1] = (wd_timer_actions & 0xff); - req->ir_request[2] = (wd_pretimeout_countdown & 0xff); + req->ir_request[2] = min(0xff, + min(wd_pretimeout_countdown, (sec + 2) / 4)); req->ir_request[3] = 0; /* Timer use */ req->ir_request[4] = (sec * 10) & 0xff; req->ir_request[5] = (sec * 10) >> 8;
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