Date: Tue, 04 Apr 2023 17:59:57 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 270644] if_bnxt: IPv6 udp traffic always routed to Tx queue 0 on BCM574xx/BCM575xx controllers Message-ID: <bug-270644-227@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270644 Bug ID: 270644 Summary: if_bnxt: IPv6 udp traffic always routed to Tx queue 0 on BCM574xx/BCM575xx controllers Product: Base System Version: 12.3-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: sumit.saxena@broadcom.com BCM574xx/BCM575xx controllers are managed by "if_bnxt" driver module. I am observing an issue with these controllers while running IPv6 UDP traffic. T= he traffic is always routed to Tx queue 0 even though more than one Tx queues = are configured.=20 Network topology: SUT1(BCM574xx) <---> Switch <---> SUT2/(BCM574xx) Steps to reproduce: 1. Run iperf server on SUT2: iperf3 -s 2. Run iperf client on SUT1(System under test):=20 iperf3 -c ::<SUT2_address> -P 32 -t 3600 -l 1000 -w 1000 -u=20 3. Checked Tx packet stats from sysctl and observed that all packets are ro= uted to txq0.=20 # sysctl dev.bnxt.2.hwstats | grep ucast_pkts | grep txq dev.bnxt.2.hwstats.txq9.ucast_pkts: 0 dev.bnxt.2.hwstats.txq8.ucast_pkts: 0 dev.bnxt.2.hwstats.txq7.ucast_pkts: 0 dev.bnxt.2.hwstats.txq6.ucast_pkts: 0 dev.bnxt.2.hwstats.txq5.ucast_pkts: 0 dev.bnxt.2.hwstats.txq4.ucast_pkts: 0 dev.bnxt.2.hwstats.txq3.ucast_pkts: 0 dev.bnxt.2.hwstats.txq2.ucast_pkts: 0 dev.bnxt.2.hwstats.txq1.ucast_pkts: 6 dev.bnxt.2.hwstats.txq0.ucast_pkts: 105706 Expected results: IPv6 udp traffic should be fairly distributed among all Tx queues. Note:=20 The same issue is not observed with IPv4 UDP traffic.=20 Selection of Tx queue is done by FreeBSD "iflib" layer. Is it a iflib layer issue ? or the driver missed to do certain settings ? --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-270644-227>