On Thu, May 26, 2016 at 11:52:45PM -0500, Dustin Marquess wrote: > After my many issues with ixgbe & ixv, I ended up removing the Intel > X520s with Chelsio T420-CR and the Intel X710s with Chelsio T520-CR. > So far so good, except I can't seem to change the MTU away from 1500. > In fact, ifconfig can't seem to change the mtu at all. On -CURRENT as > of yesterday: > > # ifconfig -m cxgbe0 > cxgbe0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> > metric 0 mtu 1500 > options=ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> > capabilities=ecc7bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,TOE4,TOE6,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> > ether 00:07:43:11:2b:80 > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > media: Ethernet 10Gbase-Twinax <full-duplex> > status: active > supported media: > media 10Gbase-Twinax mediaopt full-duplex > > # ifconfig cxgbe0 mtu 9000 > ifconfig: ioctl SIOCSIFMTU (set mtu): Invalid argument > > # ifconfig cxgbe0 mtu 1500 > ifconfig: ioctl SIOCSIFMTU (set mtu): Invalid argument > > Any ideas?
It should have worked. I tried just now on a system running -CURRENT as of today (r300785) and didn't encounter any problems. # ifconfig cxl0 up # ifconfig cxl0 mtu 500 # ifconfig cxl0 mtu 3333 # ifconfig cxl0 mtu 7992 ... Is the cxgbe/cxl ifnet part of a lagg or bridge or something like that? Run this while you try the ifconfig and see what ioctls are failing with EINVAL. You may have to do a "kldload dtraceall" before this. # dtrace -n 'fbt::*_ioctl:return /arg1 == 22/ {}' > Also, the Chelsios don't seem to use iovctl to do SR-IOV like the > Intels did (I'm using bhyve). I assume that's what the > hw.cxgbe.num_vis loader setting is for? num_vis does create multiple autonomous ifnets that share the same physical port but it doesn't involve SR-IOV. Regards, Navdeep _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"