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path: root/drivers/net/xen-netback
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2011-06-30xen/netback: Add module alias for autoloadingBastian Blank1-0/+1
Add xen-backend:vif module alias to the xen-netback module. This allows automatic loading of the module. Signed-off-by: Bastian Blank <waldi@debian.org> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-05-17xen: netback: use __CONST_RING_SIZE not __RING_SIZEIan Campbell1-2/+2
The later causes warnings with gcc 4.5+. __CONST_RING_SIZE was introduced in 667c78afaec0 to fix this but as netback wasn't upstream at the time it did not benefit, hence: CC drivers/net/xen-netback/netback.o drivers/net/xen-netback/netback.c:110:37: warning: variably modified 'grant_copy_op' at file scope [enabled by default] drivers/net/xen-netback/netback.c:111:30: warning: variably modified 'meta' at file scope [enabled by default] drivers/net/xen-netback/netback.c: In function 'xen_netbk_rx_action': drivers/net/xen-netback/netback.c:584:6: warning: variable 'irq' set but not used [-Wunused-but-set-variable] Thanks to Witold Baryluk for pointing this out. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Witold Baryluk <baryluk@smp.if.uj.edu.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-20net: xen-netback: convert to hw_featuresMichał Mirosław2-72/+15
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-07Signed bit field; int have_hotplug_status_watch:1Ian Campbell1-1/+1
Fixes error from sparse: CHECK drivers/net/xen-netback/xenbus.c drivers/net/xen-netback/xenbus.c:29:40: error: dubious one-bit signed bitfield int have_hotplug_status_watch:1; Reported-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16xen network backend driverIan Campbell5-0/+2823
netback is the host side counterpart to the frontend driver in drivers/net/xen-netfront.c. The PV protocol is also implemented by frontend drivers in other OSes too, such as the BSDs and even Windows. The patch is based on the driver from the xen.git pvops kernel tree but has been put through the checkpatch.pl wringer plus several manual cleanup passes and review iterations. The driver has been moved from drivers/xen/netback to drivers/net/xen-netback. One major change from xen.git is that the guest transmit path (i.e. what looks like receive to netback) has been significantly reworked to remove the dependency on the out of tree PageForeign page flag (a core kernel patch which enables a per page destructor callback on the final put_page). This page flag was used in order to implement a grant map based transmit path (where guest pages are mapped directly into SKB frags). Instead this version of netback uses grant copy operations into regular memory belonging to the backend domain. Reinstating the grant map functionality is something which I would like to revisit in the future. Note that this driver depends on 2e820f58f7ad "xen/irq: implement bind_interdomain_evtchn_to_irqhandler for backend drivers" which is in linux next via the "xen-two" tree and is intended for the 2.6.39 merge window: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/backends this branch has only that single commit since 2.6.38-rc2 and is safe for cross merging into the net branch. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>