Date: Sun, 27 Nov 2016 13:40:53 -0600 From: Michael Knap <michael.j.knap@gmail.com> To: freebsd-net@freebsd.org Subject: Intel 82567V-2 using em driver, no carrier or constant link-state changes with 1000BaseT Message-ID: <CAHSynqbosqKaEtL=k7MHcmjCsoXMmbkjBq=QTE256BwcmuD95A@mail.gmail.com>
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Preface: I've been a long-time linux user, and I am enjoying the BSD experience. For the following scenario, I have reproduced these results with 3 or more cables which are known to be good. Using FreeBSD 10.3 Stable : FreeBSD 10.3-STABLE #0 r295946+07c41cd(9.10-STABLE): Wed Nov 9 00:19:25 UTC 2016 root@gauntlet :/freenas-9.10-releng/_BE/objs/freenas-9.10-releng/_BE/os/sys/FreeNAS.amd64 Also, this isn't a NIC, per se, as it is onboard, but I will call it a NIC or card or whatever. Using em driver, though I don't know how to determine a driver version (if there is such a thing). Basically, the card will not push gigabit, though it will work with 100BaseTX. However, there seems to be more than just that as the chip-set is advertised as a gigabit Ethernet controller. When connected to a 100BaseTX switch, everything is good. Leaving it in autodetect mode, and connecting to a 1000baseTX switch (with good CAT6 cable), the card's link state oscillates from link up and link down: Nov 27 13:07:38 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:38 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:41 freenas kernel: em0: link state changed to UP Nov 27 13:07:41 freenas kernel: em0: link state changed to UP Nov 27 13:07:41 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:41 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:55 freenas kernel: em0: link state changed to UP Nov 27 13:07:55 freenas kernel: em0: link state changed to UP Nov 27 13:07:56 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:56 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:58 freenas kernel: em0: link state changed to UP Nov 27 13:07:58 freenas kernel: em0: link state changed to UP Nov 27 13:07:59 freenas kernel: em0: link state changed to DOWN Nov 27 13:07:59 freenas kernel: em0: link state changed to DOWN Nov 27 13:08:01 freenas kernel: em0: link state changed to UP Nov 27 13:08:01 freenas kernel: em0: link state changed to UP Nov 27 13:08:02 freenas kernel: em0: link state changed to DOWN Nov 27 13:08:02 freenas kernel: em0: link state changed to DOWN If I issue ifconfig em0 media 100baseTX mediaopt full-duplex, then I have no carrier. Also, ifconfig em0 media 1000baseT gives no carrier. However, if I ifconfig em0 media 10baseT, then I can get an active link. Interestingly, man em(4) does not claim to support this chipset, though it seems that this chipset was once supported in either e1000 or igb for older freeBSD versions? Now, at least from the driver's POV, I should be able to handle gigabit, as ifconfig -m em0 em0: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> capabilities=5399b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO> ether 00:25:11:59:d4:be inet 10.42.0.111 netmask 0xffffff00 broadcast 10.42.0.255 nd6 options=9<PERFORMNUD,IFDISABLED> media: Ethernet 10baseT/UTP (10baseT/UTP <half-duplex>) status: active supported media: media autoselect media 1000baseT media 1000baseT mediaopt full-duplex media 100baseTX mediaopt full-duplex media 100baseTX media 10baseT/UTP mediaopt full-duplex media 10baseT/UTP However when connected to gigabit switch, any explicit declaration of media fails except for 10baseT, even the autoselect declaration fails with no carrier. But remember, 100baseTX works out of the box on a 100Mbit switch. So, those more experienced, can you shed some light on what is happening? I'm especially interested in the man em(4) result even though the chipset has been supported in the past, and intel does provide drivers for this chipset, though I'm not sure if I could compile them or not. BTW, my switches are only consumer grade, unmanaged. Is that where I'm stuck? Thanks for such an awesome license, operating system, and community.
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