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path: root/drivers/net/xen-netback
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2012-01-31drivers/net: Remove unnecessary k.alloc/v.alloc OOM messagesJoe Perches1-3/+1
alloc failures use dump_stack so emitting an additional out-of-memory message is an unnecessary duplication. Remove the allocation failure messages. Signed-off-by: Joe Perches <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-01-10Merge branch 'stable/for-linus-3.3' of ↵Linus Torvalds2-7/+4
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/for-linus-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (37 commits) xen/pciback: Expand the warning message to include domain id. xen/pciback: Fix "device has been assigned to X domain!" warning xen/pciback: Move the PCI_DEV_FLAGS_ASSIGNED ops to the "[un|]bind" xen/xenbus: don't reimplement kvasprintf via a fixed size buffer xenbus: maximum buffer size is XENSTORE_PAYLOAD_MAX xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX. Xen: consolidate and simplify struct xenbus_driver instantiation xen-gntalloc: introduce missing kfree xen/xenbus: Fix compile error - missing header for xen_initial_domain() xen/netback: Enable netback on HVM guests xen/grant-table: Support mappings required by blkback xenbus: Use grant-table wrapper functions xenbus: Support HVM backends xen/xenbus-frontend: Fix compile error with randconfig xen/xenbus-frontend: Make error message more clear xen/privcmd: Remove unused support for arch specific privcmp mmap xen: Add xenbus_backend device xen: Add xenbus device driver xen: Add privcmd device driver xen/gntalloc: fix reference counts on multi-page mappings ...
2012-01-05xen-netback: make ops structs conststephen hemminger1-2/+2
All tables of function pointers should be const to make hacks more difficult. Compile tested only. Signed-off-by: Stephen Hemminger <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-01-04Xen: consolidate and simplify struct xenbus_driver instantiationJan Beulich1-6/+3
The 'name', 'owner', and 'mod_name' members are redundant with the identically named fields in the 'driver' sub-structure. Rather than switching each instance to specify these fields explicitly, introduce a macro to simplify this. Eliminate further redundancy by allowing the drvname argument to DEFINE_XENBUS_DRIVER() to be blank (in which case the first entry from the ID table will be used for .driver.name). Also eliminate the questionable xenbus_register_{back,front}end() wrappers - their sole remaining purpose was the checking of the 'owner' field, proper setting of which shouldn't be an issue anymore when the macro gets used. v2: Restore DRV_NAME for the driver name in xen-pciback. Signed-off-by: Jan Beulich <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Dmitry Torokhov <[email protected]> Cc: Florian Tobias Schandinat <[email protected]> Cc: Ian Campbell <[email protected]> Cc: David S. Miller <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-12-20xen/netback: Enable netback on HVM guestsDaniel De Graaf1-1/+1
Acked-by: Ian Campbell <[email protected]> Acked-by: David S. Miller <[email protected]> Signed-off-by: Daniel De Graaf <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-12-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
2011-12-06netback: fix typo in commentWei Liu1-1/+1
"variables a used" should be "variables are used". Signed-off-by: Wei Liu <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-12-06netback: remove redundant assignmentWei Liu1-4/+0
New value for netbk->mmap_pages[pending_idx] is assigned in xen_netbk_alloc_page(), no need for a second assignment which exposes internal to the outside world. Signed-off-by: Wei Liu <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-12-06netback: Fix alert message.Wei Liu1-1/+1
The original message in netback_init was 'kthread_run() fails', which should be 'kthread_create() fails'. Signed-off-by: Wei Liu <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Conflicts: net/ipv4/inet_diag.c
2011-11-21xen-netback: use correct index for invalidation in xen_netbk_tx_check_gop()Jan Beulich1-1/+1
Signed-off-by: Jan Beulich <[email protected]> Signed-off-by: Ian Campbell <[email protected]> Cc: [email protected] Signed-off-by: David S. Miller <[email protected]>
2011-11-16net: introduce and use netdev_features_t for device features setsMichał Mirosław1-1/+2
v2: add couple missing conversions in drivers split unexporting netdev_fix_features() implemented %pNF convert sock::sk_route_(no?)caps Signed-off-by: Michał Mirosław <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-06Merge branch 'stable/vmalloc-3.2' of ↵Linus Torvalds2-69/+22
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/vmalloc-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: net: xen-netback: use API provided by xenbus module to map rings block: xen-blkback: use API provided by xenbus module to map rings xen: use generic functions instead of xen_{alloc, free}_vm_area()
2011-10-26net: xen-netback: use API provided by xenbus module to map ringsDavid Vrabel2-69/+22
The xenbus module provides xenbus_map_ring_valloc() and xenbus_map_ring_vfree(). Use these to map the Tx and Rx ring pages granted by the frontend. Signed-off-by: David Vrabel <[email protected]> Acked-by: David S. Miller <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-10-19net: add skb frag size accessorsEric Dumazet1-2/+2
To ease skb->truesize sanitization, its better to be able to localize all references to skb frags size. Define accessors : skb_frag_size() to fetch frag size, and skb_frag_size_{set|add|sub}() to manipulate it. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-10-07Merge branch 'master' of github.com:davem330/netDavid S. Miller1-2/+2
Conflicts: net/batman-adv/soft-interface.c
2011-10-05xen: netback: convert to SKB paged frag API.Ian Campbell1-21/+33
netback currently uses frag->page to store a temporary index reference while processing incoming requests. Since frag->page is to become opaque switch instead to using page_offset. Add a wrapper to tidy this up and propagate the fact that the indexes are only u16 through the code (this was already true in practice but unsigned long and in were inconsistently used as variable and parameter types) Signed-off-by: Ian Campbell <[email protected]> Cc: Ian Campbell <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: David S. Miller <[email protected]>
2011-10-03net: xen-netback: correctly restart Tx after a VM restore/migrateDavid Vrabel1-2/+2
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 <[email protected]> Cc: Ian Campbell <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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 <[email protected]> Acked-by: Ian Campbell <[email protected]> Acked-by: Konrad Rzeszutek Wilk <[email protected]>
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 <[email protected]> Cc: Witold Baryluk <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-20net: xen-netback: convert to hw_featuresMichał Mirosław2-72/+15
Signed-off-by: Michał Mirosław <[email protected]> Acked-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06Signed 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 <[email protected]> Signed-off-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-15xen 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 <[email protected]> Reviewed-by: Ben Hutchings <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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