From: Dexuan Cui <de...@microsoft.com>
Date: Wed, 6 Jun 2018 21:32:51 +0000
>
> Recently people reported the NIC stops working after
> "ifdown eth0; ifup eth0". It turns out in this case the TX queues are not
> enabled, after the refactoring of the common detach logic: when the NIC
> has sub-channels, usually we enable all the TX queues after all
> sub-channels are set up: see rndis_set_subchannel() ->
> netif_device_attach(), but in the case of "ifdown eth0; ifup eth0" where
> the number of channels doesn't change, we also must make sure the TX queues
> are enabled. The patch fixes the regression.
>
> Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
> Signed-off-by: Dexuan Cui <de...@microsoft.com>
Applied and queued up for -stable.
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