Date: Fri, 07 Aug 2026 01:02:02 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 265714] igc(4) drops link under high traffic Message-ID: <bug-265714-7501-6bRep2JLrY@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-265714-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265714 --- Comment #65 from Kevin Bowling <kbowling@freebsd.org> --- (In reply to Tomasz "CeDeROM" CEDRO from comment #64) I think the sysctl dump is post recovery? The only clue is missed_packets, maybe indicating an RX stall. It would help to capture two snapshots a few seconds apart before resetting while another host sends traffic: vmstat -i | grep igc, netstat -I igc0 -bd, and the sysctl dumps. Please also run these before, during, and after: pciconf -lc igc0 and the following script: /bin/sh <<'EOF' cap=$(pciconf -lc igc0 | sed -n 's/.*ecap 001e\[\([0-9A-Fa-f][0-9A-Fa-f]*\)\].*/\1/p') if [ -z "$cap" ]; then echo "L1PM capability 001e not found" exit 1 fi off=$((0x${cap} + 8)) set -- $(pciconf -r igc0 "$off") ctl1=$1 printf 'L1PM capability offset: 0x%s\n' "$cap" printf 'L1PM CTL1 offset: 0x%x\n' "$off" printf 'L1PM CTL1 value: 0x%s\n' "$ctl1" if [ $((0x${ctl1} & 0x4)) -eq 0 ]; then echo 'I226 ASPM L1.2 enable: CLEAR (workaround active)' else echo 'I226 ASPM L1.2 enable: SET (workaround absent/lost)' fi EOF -- You are receiving this mail because: You are the assignee for the bug.home | help
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