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17 May 2024, 11:00:25 UTC
Revision d0e5d83284dac15c015bb48115b6780f5a6413cd authored by David Vrabel on 30 September 2011, 06:37:51 UTC, committed by David S. Miller on 03 October 2011, 18:15:46 UTC 
net: xen-netback: correctly restart Tx after a VM restore/migrate
 
If a VM is saved and restored (or migrated) the netback driver will no
longer process any Tx packets from the frontend.  xenvif_up() does not
schedule the processing of any pending Tx requests from the front end
because the carrier is off.  Without this initial kick the frontend
just adds Tx requests to the ring without raising an event (until the
ring is full).

This was caused by 47103041e91794acdbc6165da0ae288d844c820b (net:
xen-netback: convert to hw_features) which reordered the calls to
xenvif_up() and netif_carrier_on() in xenvif_connect().

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent a0db2da
History
Tip revision: d0e5d83284dac15c015bb48115b6780f5a6413cd authored by David Vrabel on 30 September 2011, 06:37:51 UTC
net: xen-netback: correctly restart Tx after a VM restore/migrate
Tip revision: d0e5d83
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