> On Jul 27, 2020, at 01:00, Eugene Grosbein <eu...@grosbein.net> wrote: > > 27.07.2020 5:16, Joe Clarke wrote: > >> About two weeks ago, I upgraded from the latest 11-stable to the latest >> 12-stable. After that, I periodically see the network throughput come to a >> near standstill. This FreeBSD machine is an ESXi VM with two interfaces. >> It acts as a router. It uses vmxnet3 interfaces for both LAN and WAN. It >> runs ipfw with in-kernel NAT. The LAN side uses a bridge with vmx0 and a >> tap0 L2 VPN interface. My LAN side uses an MTU of 9000, and my vmx1 (WAN >> side) uses the default 1500. >> >> Besides seeing massive packet loss and huge latency (~ 200 ms for on-LAN >> ping times), I know the problem has occurred because my lldpd reports: >> >> Jul 26 15:47:03 namale lldpd[1126]: frame too short for tlv received on >> bridge0 >> >> And if I turn on ipfw verbose messages, I see tons of: >> >> Jul 26 16:02:23 namale kernel: ipfw: pullup failed >> >> This leads to me to believe packets are being corrupted on ingress. I’ve >> applied all the recent iflib changes, but the problem persists. What causes >> it, I don’t know. >> >> The only thing that changed (and yes, it’s a big one) is I upgraded to >> 12-stable. Meaning, the rest of the network infra and topology has remained >> the same. This did not happen at all in 11-stable. >> >> I’m open to suggestions. > > First, try: ifconfig $ifname -rxcsum -txcsum
Thanks for the suggestion. I should have mentioned I’ve been initializing these two interfaces since 11-stable with: ifconfig_vmx0="up mtu 9000 -tso -lro -vlanhwtso -rxcsum -txcsum -rxcsum6 -txcsum6 -tso4 -tso6 -vlanhwcsum” ifconfig_vmx1="DHCP -tso -lro -vlanhwtso -rxcsum -txcsum -rxcsum6 -txcsum6 -tso4 -tso6 -vlanhwcsum” And I’m running: FreeBSD namale.marcuscom.com 12.1-STABLE FreeBSD 12.1-STABLE NAMALE amd64 1201520 1201520 I most recently built this yesterday, but the previous kernel that exhibited the problem was built about a week ago. It had the fragment fixes for iflib.c. Joe > --- PGP Key : http://www.marcuscom.com/pgp.asc _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
