[Xen-devel] networking oddities, present status ? changeset: 7145:71466686d026

[Ted Kaczmarek <tedkaz@xxxxxxxxxxxxx>]

What is the present status of networking? Also will assigning unique mac
addresses to individual bridges on a domO be supported?


Seeing all kings of weird behavior when testing multiple nics.

changeset:   7145:71466686d026

nics=3

vif = ['mac=AA:00:00:11:11:12','bridge=xen-br1']


With the above I actually get eth0 and eth1 working on the domU, the
wild part is eth0 get the mac address AA:00:00:11:11:12 and shows up on
xen-br0.

Any other bridge setting for vif and weird stuff happens, broadcast
pings fail but unicast work, packet loss, total loss of connectivity,
packets from domU's get dropped at egress on domO, and domU kernel crash
have been observed.


vif = ['mac=AA:00:00:11:11:11' , 'bridge=xen-br0' , 'bridge=xen-br1' ,
'bridge=xen-br2']

Process swapper (pid: 1, threadinfo=c00b1000 task=c00b2a80)
Stack: 00000610 00000000 c17d1000 c0106685 00000001 00000000 c17cb240
c02294c3
       c17cb240 0000000b 00000000 00000006 00000000 0000000b 00000000
00000000
       00000000 00000000 c17b3740 c17cb246 c17b3752 00000000 c0229756
c04b8b60
Call Trace:
 [<c0106685>] gnttab_grant_foreign_access+0x15/0x60
 [<c02294c3>] setup_device+0x293/0x2c0
 [<c0229756>] talk_to_backend+0x136/0x390
 [<c0229a2f>] netfront_probe+0x7f/0x100
 [<c02250ed>] xenbus_dev_probe+0x4d/0x60
 [<c020b3ff>] driver_probe_device+0x2f/0x80
 [<c020b579>] driver_attach+0x59/0x90
 [<c020bacd>] bus_add_driver+0xad/0xf0
 [<c022517a>] xenbus_register_driver+0x5a/0x70
 [<c02251a7>] xenbus_register_device+0x17/0x20
 [<c033fd9f>] init_net_xenbus+0xf/0x20
 [<c033fdf0>] netif_init+0x40/0x50
 [<c032da72>] do_initcalls+0x32/0xf0
 [<c01040fa>] init+0x8a/0x1c0
 [<c0104070>] init+0x0/0x1c0
 [<c010748d>] kernel_thread_helper+0x5/0x18
Code: e9 60 55 08 00 f3 c3 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 56
53 83 ec 14 8b 74 24 20 8b 54 24 24 8b 5e 08 8b 86 f4 0c 00 00 <89> 83
90 00 00 00 0f b7 86 f8 0c 00 00 66 89 83 94 00 00 00 89


Regards,
Ted




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