Date: Sun, 26 Apr 2015 18:34:32 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199716] em doesn't increment adapter->rx_overruns in msix mode Message-ID: <bug-199716-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199716 Bug ID: 199716 Summary: em doesn't increment adapter->rx_overruns in msix mode Product: Base System Version: 10.1-STABLE Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: david.keller@litchis.fr CC: erj@freebsd.org, jfv@FreeBSD.org When using msix interrupt model (e.g. 82574L chip), all interrupts excepted E1000_ICR_RXQ0, E1000_ICR_RXQ1, E1000_ICR_TXQ0, E1000_ICR_TXQ1 are handled by the em_msix_link() function. Currently, this function only checks for E1000_ICR_LSC: https://svnweb.freebsd.org/base/releng/10.1/sys/dev/e1000/if_em.c?view=markup#l1615 Hence when an E1000_ICR_RXO interrupt occurs, it's cleared (because of ICR reading), but adapter->rx_overruns is *not* incremented. This may hide a chip hang (bug #199174). -- You are receiving this mail because: You are the assignee for the bug.
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