net: vrf: Switch dst dev to loopback on device delete

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Attempting to delete a VRF device with a socket bound to it can stall:

  unregister_netdevice: waiting for red to become free. Usage count = 1

The unregister is waiting for the dst to be released and with it
references to the vrf device. Similar to dst_ifdown switch the dst
dev to loopback on delete for all of the dst's for the vrf device
and release the references to the vrf device.

Fixes: 193125dbd8 ("net: Introduce VRF device driver")
Fixes: 35402e3136 ("net: Add IPv6 support to VRF device")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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David Ahern 2016-06-14 11:37:21 -07:00 • committed by David S. Miller

parent 042ce72230

commit 810e530bfa

1 changed files with 42 additions and 13 deletions

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drivers/net/vrf.c

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