[ofa-general] ipoib attempting to join on junk MGID for child interface

[Or Gerlitz]

Opening ipoib debug prints, with OFED 1.2 (RH4 U3 i386) I see such prints:

ib0.8007: no multicast record for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, status -22

any idea what caused this jusk mgid to be used by ipoib?

Or.

below there is more complete dmesg output, basically to reproduce this
I just do:


$ ifconfig ib0 up
$ echo 0x8007 > /sys/class/net/ib0/create_child
$ echo 0x8007 > /sys/class/net/ib0/delete_child

with waiting few second between each command

ib0: bringing up interface
ib0: starting multicast thread
ib0: joining MGID ff12:401b:ffff:0000:0000:0000:ffff:ffff
ib0: restarting multicast task
ib0: stopping multicast thread
ib0: adding multicast entry for mgid ff12:601b:ffff:0000:0000:0001:ff98:2e61
ib0: adding multicast entry for mgid ff12:601b:ffff:0000:0000:0000:0000:0001
ib0: adding multicast entry for mgid ff12:401b:ffff:0000:0000:0000:0000:0001
ib0: starting multicast thread
ib0: join completion for ff12:401b:ffff:0000:0000:0000:ffff:ffff (status 0)
ib0: Created ah f45e7840
ib0: MGID ff12:401b:ffff:0000:0000:0000:ffff:ffff AV f45e7840, LID 0xc000, SL 0
ib0: joining MGID ff12:601b:ffff:0000:0000:0001:ff98:2e61
ib0: join completion for ff12:601b:ffff:0000:0000:0001:ff98:2e61 (status 0)
ib0: Created ah f6a62120
ib0: MGID ff12:601b:ffff:0000:0000:0001:ff98:2e61 AV f6a62120, LID 0xc00a, SL 0
ib0: joining MGID ff12:601b:ffff:0000:0000:0000:0000:0001
ib0: join completion for ff12:601b:ffff:0000:0000:0000:0000:0001 (status 0)
ib0: Created ah f4bd35c0
ib0: MGID ff12:601b:ffff:0000:0000:0000:0000:0001 AV f4bd35c0, LID 0xc00b, SL 0
ib0: joining MGID ff12:401b:ffff:0000:0000:0000:0000:0001
ib0: join completion for ff12:401b:ffff:0000:0000:0000:0000:0001 (status 0)
ib0: Created ah f4bd3560
ib0: MGID ff12:401b:ffff:0000:0000:0000:0000:0001 AV f4bd3560, LID 0xc001, SL 0
ib0: successfully joined all multicast groups
ib0: setting up send only multicast group for ff12:601b:ffff:0000:0000:0000:0000:0002
ib0: no multicast record for ff12:601b:ffff:0000:0000:0000:0000:0002, starting join
ib0: Created ah f6a62560
ib0: MGID ff12:601b:ffff:0000:0000:0000:0000:0002 AV f6a62560, LID 0xc00d, SL 0
ib0: no IPv6 routers present
divert: not allocating divert_blk for non-ethernet device ib0.8007
ip_tables: (C) 2000-2002 Netfilter core team
ib0.8007: bringing up interface
ib0.8007: starting multicast thread
ib0.8007: joining MGID ff12:401b:8007:0000:0000:0000:ffff:ffff
ib0.8007: restarting multicast task
ib0.8007: stopping multicast thread
ib0.8007: adding multicast entry for mgid ff12:601b:8007:0000:0000:0001:ff98:2e61
ib0.8007: adding multicast entry for mgid ff12:601b:8007:0000:0000:0000:0000:0001
ib0.8007: starting multicast thread
ib0.8007: join completion for ff12:401b:8007:0000:0000:0000:ffff:ffff (status 0)
ib0.8007: Created ah f45e7500
ib0.8007: MGID ff12:401b:8007:0000:0000:0000:ffff:ffff AV f45e7500, LID 0xc005, SL 0
ib0.8007: joining MGID ff12:601b:8007:0000:0000:0001:ff98:2e61
ib0.8007: setting up send only multicast group for ff12:601b:8007:0000:0000:0000:0000:0016
ib0.8007: no multicast record for ff12:601b:8007:0000:0000:0000:0000:0016, starting join
ib0.8007: join completion for ff12:601b:8007:0000:0000:0001:ff98:2e61 (status 0)
ib0.8007: Created ah f34fece0
ib0.8007: MGID ff12:601b:8007:0000:0000:0001:ff98:2e61 AV f34fece0, LID 0xc00e, SL 0
ib0.8007: joining MGID ff12:601b:8007:0000:0000:0000:0000:0001
ib0.8007: Created ah f34fee60
ib0.8007: MGID ff12:601b:8007:0000:0000:0000:0000:0016 AV f34fee60, LID 0xc010, SL 0
ib0.8007: join completion for ff12:601b:8007:0000:0000:0000:0000:0001 (status 0)
ib0.8007: Created ah f34fec60
ib0.8007: MGID ff12:601b:8007:0000:0000:0000:0000:0001 AV f34fec60, LID 0xc00c, SL 0
ib0.8007: successfully joined all multicast groups
ib0.8007: setting up send only multicast group for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7
ib0.8007: no multicast record for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, status -22
ib0.8007: setting up send only multicast group for ff12:601b:8007:0000:0000:0000:0000:0002
ib0.8007: no multicast record for ff12:601b:8007:0000:0000:0000:0000:0002, starting join
ib0.8007: Created ah f34fec40
ib0.8007: no multicast record for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, status -22
ib0.8007: MGID ff12:601b:8007:0000:0000:0000:0000:0002 AV f34fec40, LID 0xc011, SL 0
ib0.8007: no multicast record for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:df5b:10c0:24c6:1af7, status -22
ib0.8007: restarting multicast task
ib0.8007: stopping multicast thread
ib0.8007: adding multicast entry for mgid ff12:401b:8007:0000:0000:0000:0000:0001
ib0.8007: starting multicast thread
ib0.8007: joining MGID ff12:401b:8007:0000:0000:0000:0000:0001
ib0.8007: join completion for ff12:401b:8007:0000:0000:0000:0000:0001 (status 0)
ib0.8007: Created ah f554d6c0
ib0.8007: MGID ff12:401b:8007:0000:0000:0000:0000:0001 AV f554d6c0, LID 0xc006, SL 0
ib0.8007: successfully joined all multicast groups
ib0.8007: setting up send only multicast group for ffff:ffff:8007:0000:e89f:e9bf:8011:0406
ib0.8007: no multicast record for ffff:ffff:8007:0000:e89f:e9bf:8011:0406, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:e89f:e9bf:8011:0406, status -22
ib0.8007: setting up send only multicast group for ffff:ffff:8007:0000:70ba:e200:8011:0406
ib0.8007: no multicast record for ffff:ffff:8007:0000:70ba:e200:8011:0406, starting join
ib0.8007: multicast join failed for ffff:ffff:8007:0000:70ba:e200:8011:0406, status -22
ib0.8007: no IPv6 routers present
ib0: neigh_destructor for ffffff ff12:601b:ffff:0000:0000:0001:ff98:2e61
ib0.8007: stopping interface
ib0.8007: downing ib_dev
ib0.8007: stopping multicast thread
ib0.8007: flushing multicast list
ib0.8007: leaving MGID ff12:601b:8007:0000:0000:0001:ff98:2e61
ib0.8007: deleting multicast group ff12:601b:8007:0000:0000:0001:ff98:2e61
ib0.8007: leaving MGID ff12:601b:8007:0000:0000:0000:0000:0001
ib0.8007: deleting multicast group ff12:601b:8007:0000:0000:0000:0000:0001
ib0.8007: deleting multicast group ff12:601b:8007:0000:0000:0000:0000:0016
ib0.8007: deleting multicast group ffff:ffff:8007:0000:df5b:10c0:24c6:1af7
ib0.8007: deleting multicast group ff12:601b:8007:0000:0000:0000:0000:0002
ib0.8007: leaving MGID ff12:401b:8007:0000:0000:0000:0000:0001
ib0.8007: deleting multicast group ff12:401b:8007:0000:0000:0000:0000:0001
ib0.8007: deleting multicast group ffff:ffff:8007:0000:e89f:e9bf:8011:0406
ib0.8007: deleting multicast group ffff:ffff:8007:0000:70ba:e200:8011:0406
ib0.8007: leaving MGID ff12:401b:8007:0000:0000:0000:ffff:ffff
ib0.8007: deleting multicast group ff12:401b:8007:0000:0000:0000:ffff:ffff
ib0.8007: All sends and receives done.
divert: no divert_blk to free, ib0.8007 not ethernet
ib0.8007: cleaning up ib_dev
ib0.8007: stopping multicast thread
ib0.8007: flushing multicast list
ib0.8007: Cleanup ipoib connected mode.
ib0: neigh_destructor for ffffff ff12:601b:ffff:0000:0000:0000:0000:0002