Spot this while working on https://reviews.freebsd.org/D42678 . This is a two ports Chelsio T520-CR card, connected to switch via passive twinax cable . Steps to repeat: ``` # devctl detach cxl1 # devctl attach cxl1 # ifconfig cxl1 cxl1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=6ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,HWRXTSTMP,MEXTPG> ether 00:07:43:xx:xx:xx ifconfig: cxl1: no media types? nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> ``` Expected media and status: ``` media: Ethernet 10Gbase-Twinax <full-duplex,rxpause,txpause> status: no carrier ``` Also it can not be brought up to RUNNING state by assigning IP addresses. ``` # ifconfig cxl1 inet 192.168.100.1/24 # ifconfig cxl1 cxl1: flags=8803<UP,BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=6ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,HWRXTSTMP,MEXTPG> ether 00:07:43:xx:xx:xx inet 192.168.100.1 netmask 0xffffff00 broadcast 192.168.100.255 ifconfig: cxl1: no media types? nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> ```
I'm able to reproduce this.
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=0201eb29dde9dccbf796f81fbf18f3b21798183d commit 0201eb29dde9dccbf796f81fbf18f3b21798183d Author: Navdeep Parhar <np@FreeBSD.org> AuthorDate: 2024-01-02 21:20:45 +0000 Commit: Navdeep Parhar <np@FreeBSD.org> CommitDate: 2024-01-03 19:21:46 +0000 cxgbe(4): Fix virtual interface reattach. Replace the DOOMED flag with a transient DETACHING flag that is cleared when VI is detached. This fixes VI reattach when only the VI and not the parent nexus is detached. The old flag was never cleared and prevented subsequent synch op's related to the VI. PR: 275260 Reviewed by: jhb MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D43287 Sponsored by: Chelsio Communications sys/dev/cxgbe/adapter.h | 10 ++++++---- sys/dev/cxgbe/t4_main.c | 33 +++++++++++++++++++-------------- 2 files changed, 25 insertions(+), 18 deletions(-)
A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=7d98a455a3ea91eadbd3c84c6cd85314f5e29529 commit 7d98a455a3ea91eadbd3c84c6cd85314f5e29529 Author: Navdeep Parhar <np@FreeBSD.org> AuthorDate: 2024-01-02 21:20:45 +0000 Commit: Navdeep Parhar <np@FreeBSD.org> CommitDate: 2024-01-11 05:22:31 +0000 cxgbe(4): Fix virtual interface reattach. Replace the DOOMED flag with a transient DETACHING flag that is cleared when VI is detached. This fixes VI reattach when only the VI and not the parent nexus is detached. The old flag was never cleared and prevented subsequent synch op's related to the VI. PR: 275260 Reviewed by: jhb Differential Revision: https://reviews.freebsd.org/D43287 Sponsored by: Chelsio Communications (cherry picked from commit 0201eb29dde9dccbf796f81fbf18f3b21798183d) sys/dev/cxgbe/adapter.h | 10 ++++++---- sys/dev/cxgbe/t4_main.c | 33 +++++++++++++++++++-------------- 2 files changed, 25 insertions(+), 18 deletions(-)
A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3a507508e3657b4946ee401638a043f2f073da81 commit 3a507508e3657b4946ee401638a043f2f073da81 Author: Navdeep Parhar <np@FreeBSD.org> AuthorDate: 2024-01-02 21:20:45 +0000 Commit: Navdeep Parhar <np@FreeBSD.org> CommitDate: 2024-01-11 05:06:59 +0000 cxgbe(4): Fix virtual interface reattach. Replace the DOOMED flag with a transient DETACHING flag that is cleared when VI is detached. This fixes VI reattach when only the VI and not the parent nexus is detached. The old flag was never cleared and prevented subsequent synch op's related to the VI. PR: 275260 Reviewed by: jhb Differential Revision: https://reviews.freebsd.org/D43287 Sponsored by: Chelsio Communications (cherry picked from commit 0201eb29dde9dccbf796f81fbf18f3b21798183d) sys/dev/cxgbe/adapter.h | 10 ++++++---- sys/dev/cxgbe/t4_main.c | 33 +++++++++++++++++++-------------- 2 files changed, 25 insertions(+), 18 deletions(-)