Date: Sun, 17 Aug 2025 23:50:00 +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-aMJga2A6vv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-265714-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-265714-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D265714 karl@denninger.net changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |karl@denninger.net --- Comment #32 from karl@denninger.net --- I've got a little N-150 "minimal PC" box here with dual I226-v ports -- it comes up with 2.17 for the EEPROM. igc0: <Intel(R) Ethernet Controller I226-V> mem 0x80c00000-0x80cfffff,0x80d00000-0x80d03fff at device 0.0 on pci1 igc0: EEPROM V2.17-0 eTrack 0x80000303 igc0: Using 1024 TX descriptors and 1024 RX descriptors igc0: Using 4 RX queues 4 TX queues igc0: Using MSI-X interrupts with 5 vectors igc0: Ethernet address: c8:ff:bf:05:95:e2 igc0: netmap queues/slots: TX 4/1024, RX 4/1024 .... $ ifconfig igc0 igc0: flags=3D1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metr= ic 0 mtu 1500 =20=20=20=20=20=20=20 options=3D4e427bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCS= UM,TSO4,TSO6,LRO,WOL_MAGIC,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTP= G> ether c8:ff:bf:05:95:e2 inet 192.168.10.50 netmask 0xffffff00 broadcast 192.168.10.255 media: Ethernet autoselect (2500Base-T <full-duplex>) status: active nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> If I turn off TSO and LRO (intended thing to do for the outside interface o= n a gateway/firewall) the only change is a slight increase in CPU use, as expec= ted. I've had zero trouble under 14.3-STABLE (built about a week ago) and I've hammered it pretty hard with iperf3 on 2.5Gbps connections.... zero hangs, drops or other misbehavior. The "other end" I'm testing against is a server on a 10GbE link through a Mellanox card (mce driver) into a switch with both 10G and 2.5G ports. (This is in contrast to a similar machine from a different vendor I have wi= th dual RealTek 2.5G ports that is unusably bad; random resets occur on the kernel-included driver under load and with the kmod driver some versions if= I dig through the older package sets sort of work but the "best" ones seem to= be "stable" but produce insane retry counts on iperf and very random-latency performance on real workloads.) I am not setting anything special (e.g. hw.pci.enable_aspm=3D0) or similar. --=20 You are receiving this mail because: You are the assignee for the bug.=
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