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path: root/drivers/net/xen-netfront.c
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* xen-netfront: Fix handling packets on compound pages with skb_linearizeZoltan Kiss2014-08-111-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1 ring slots, it gets dropped. The reason is that netback maps these slots to a frag in the frags array, which is limited by size. Having so many slots can occur since compound pages were introduced, as the ring protocol slice them up into individual (non-compound) page aligned slots. The theoretical worst case scenario looks like this (note, skbs are limited to 64 Kb here): linear buffer: at most PAGE_SIZE - 17 * 2 bytes, overlapping page boundary, using 2 slots first 15 frags: 1 + PAGE_SIZE + 1 bytes long, first and last bytes are at the end and the beginning of a page, therefore they use 3 * 15 = 45 slots last 2 frags: 1 + 1 bytes, overlapping page boundary, 2 * 2 = 4 slots Although I don't think this 51 slots skb can really happen, we need a solution which can deal with every scenario. In real life there is only a few slots overdue, but usually it causes the TCP stream to be blocked, as the retry will most likely have the same buffer layout. This patch solves this problem by linearizing the packet. This is not the fastest way, and it can fail much easier as it tries to allocate a big linear area for the whole packet, but probably easier by an order of magnitude than anything else. Probably this code path is not touched very frequently anyway. Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Paul Durrant <paul.durrant@citrix.com> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: xen-devel@lists.xenproject.org Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: print correct number of queuesDavid Vrabel2014-07-311-2/+2
| | | | | | | | When less than the requested number of queues could be created, include the actual number in the warning (instead of the requested number). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: release per-queue Tx and Rx resource when disconnectingDavid Vrabel2014-07-311-61/+7
| | | | | | | | | | | | | | | | | | Since netfront may reconnect to a backend with a different number of queues, all per-queue Rx and Tx resources (skbs and grant references) should be freed when disconnecting. Without this fix, the Tx and Rx grant refs are not released and netfront will exhaust them after only a few reconnections. netfront will fail to connect when no free grant references are available. Since all Rx bufs are freed and reallocated instead of reused this will add some additional delay to the reconnection but this is expected to be small compared to the time taken by any backend hotplug scripts etc. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: fix locking in connect error pathDavid Vrabel2014-07-311-1/+1
| | | | | | | | If no queues could be created when connecting to the backend, one of the error paths would deadlock. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: call netif_carrier_off() only once when disconnectingDavid Vrabel2014-07-081-7/+4
| | | | | | | | | | | | | | | | | | | In xennet_disconnect_backend(), netif_carrier_off() was called once per queue when it needs to only be called once. The queue locking around the netif_carrier_off() call looked very odd. I think they were supposed to synchronize any NAPI instances with the expectation that no further NAPI instances would be scheduled because of the carrier being off (see the check in xennet_rx_interrupt()). But I can't easily tell if this works correctly. Instead, add a napi_synchronize() call after disabling the interrupts. This is obviously correct as with no Rx interrupts, no further NAPI instances will be scheduled. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: don't nest queue locks in xennet_connect()David Vrabel2014-07-081-4/+12
| | | | | | | | | | | | | | | | The nesting of the per-queue rx_lock and tx_lock in xennet_connect() is confusing to both humans and lockdep. The locking is safe because this is the only place where the locks are nested in this way but lockdep still warns. Instead of adding the missing lockdep annotations, refactor the locking to avoid the confusing nesting. This is still safe, because the xenbus connection state changes are all serialized by the xenwatch thread. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: recreate queues correctly when reconnectingDavid Vrabel2014-06-211-32/+72
| | | | | | | | | | | | | | | | | | | | | | | When reconnecting to the backend (after a resume/migration, for example), a different number of queues may be required (since the guest may have moved to a different host with different capabilities). During the reconnection the old queues are torn down and new ones created. Introduce xennet_create_queues() and xennet_destroy_queues() that fixes three bugs during the reconnection. - The old info->queues was leaked. - The old queue's napi instances were not deleted. - The new queue's napi instances were left disabled (which meant no packets could be received). The xennet_destroy_queues() calls is deferred until the reconnection instead of the disconnection (in xennet_disconnect_backend()) because napi_disable() might sleep. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: fix oops when disconnected from backendDavid Vrabel2014-06-211-2/+3
| | | | | | | | | xennet_disconnect_backend() was not correctly iterating over all the queues. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: initialise queue name in xennet_init_queueWei Liu2014-06-041-0/+3
| | | | | | Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: Add support for multiple queuesAndrew J. Bennieston2014-06-041-36/+134
| | | | | | | | | | | | | | | | | | | Build on the refactoring of the previous patch to implement multiple queues between xen-netfront and xen-netback. Check XenStore for multi-queue support, and set up the rings and event channels accordingly. Write ring references and event channels to XenStore in a queue hierarchy if appropriate, or flat when using only one queue. Update the xennet_select_queue() function to choose the queue on which to transmit a packet based on the skb hash result. Signed-off-by: Andrew J. Bennieston <andrew.bennieston@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: Factor queue-specific data into queue struct.Andrew J. Bennieston2014-06-041-393/+579
| | | | | | | | | | | | | | | | | | | | In preparation for multi-queue support in xen-netfront, move the queue-specific data from struct netfront_info to struct netfront_queue, and update the rest of the code to use this. Also adds loops over queues where appropriate, even though only one is configured at this point, and uses alloc_etherdev_mq() and the corresponding multi-queue netif wake/start/stop functions in preparation for multiple active queues. Finally, implements a trivial queue selection function suitable for ndo_select_queue, which simply returns 0, selecting the first (and only) queue. Signed-off-by: Andrew J. Bennieston <andrew.bennieston@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: get rid of SET_ETHTOOL_OPSWilfried Klaebe2014-05-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | net: get rid of SET_ETHTOOL_OPS Dave Miller mentioned he'd like to see SET_ETHTOOL_OPS gone. This does that. Mostly done via coccinelle script: @@ struct ethtool_ops *ops; struct net_device *dev; @@ - SET_ETHTOOL_OPS(dev, ops); + dev->ethtool_ops = ops; Compile tested only, but I'd seriously wonder if this broke anything. Suggested-by: Dave Miller <davem@davemloft.net> Signed-off-by: Wilfried Klaebe <w-lkml@lebenslange-mailadresse.de> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers: net: xen-netfront: fix array initialization bugVincenzo Maffione2014-04-121-1/+1
| | | | | | | | | | This patch fixes the initialization of an array used in the TX datapath that was mistakenly initialized together with the RX datapath arrays. An out of range array access could happen when RX and TX rings had different sizes. Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: Call dev_kfree_skb_any instead of dev_kfree_skb.Eric W. Biederman2014-03-241-1/+1
| | | | | | | | Replace dev_kfree_skb with dev_kfree_skb_any in xennet_start_xmit which can be called in hard irq and other contexts. xennet_start_xmit only fress skbs which it drops. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irqEric W. Biederman2014-03-141-2/+2
| | | | | | | | | | | | | | | Replace the bh safe variant with the hard irq safe variant. We need a hard irq safe variant to deal with netpoll transmitting packets from hard irq context, and we need it in most if not all of the places using the bh safe variant. Except on 32bit uni-processor the code is exactly the same so don't bother with a bh variant, just have a hard irq safe variant that everyone can use. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2014-03-051-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/wireless/ath/ath9k/recv.c drivers/net/wireless/mwifiex/pcie.c net/ipv6/sit.c The SIT driver conflict consists of a bug fix being done by hand in 'net' (missing u64_stats_init()) whilst in 'net-next' a helper was created (netdev_alloc_pcpu_stats()) which takes care of this. The two wireless conflicts were overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * xen-netfront: reset skb network header before checksumWei Liu2014-02-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ed1f50c3a ("net: add skb_checksum_setup") we introduced some checksum functions in core driver. Subsequent change b5cf66cd1 ("xen-netfront: use new skb_checksum_setup function") made use of those functions to replace its own implementation. However with that change netfront is broken. It sees a lot of checksum error. That's because its own implementation of checksum function was a bit hacky (dereferencing skb->data directly) while the new function was implemented using ip_hdr(). The network header is not reset before skb is passed to the new function. When the new function tries to do its job, it's confused and reports error. The fix is simple, we need to reset network header before passing skb to checksum function. Netback is not affected as it already does the right thing. Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: Wei Liu <wei.liu2@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Paul Durrant <paul.durrant@citrix.com> Tested-By: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: introduce netdev_alloc_pcpu_stats() for driversWANG Cong2014-02-141-7/+1
|/ | | | | | | | | There are many drivers calling alloc_percpu() to allocate pcpu stats and then initializing ->syncp. So just introduce a helper function for them. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: handle backend CLOSED without CLOSINGDavid Vrabel2014-02-041-1/+4
| | | | | | | | | | | | Backend drivers shouldn't transistion to CLOSED unless the frontend is CLOSED. If a backend does transition to CLOSED too soon then the frontend may not see the CLOSING state and will not properly shutdown. So, treat an unexpected backend CLOSED state the same as CLOSING. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: fix resource leak in netfrontAnnie Li2014-01-271-62/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes grant transfer releasing code from netfront, and uses gnttab_end_foreign_access to end grant access since gnttab_end_foreign_access_ref may fail when the grant entry is currently used for reading or writing. * clean up grant transfer code kept from old netfront(2.6.18) which grants pages for access/map and transfer. But grant transfer is deprecated in current netfront, so remove corresponding release code for transfer. * fix resource leak, release grant access (through gnttab_end_foreign_access) and skb for tx/rx path, use get_page to ensure page is released when grant access is completed successfully. Xen-blkfront/xen-tpmfront/xen-pcifront also have similar issue, but patches for them will be created separately. V6: Correct subject line and commit message. V5: Remove unecessary change in xennet_end_access. V4: Revert put_page in gnttab_end_foreign_access, and keep netfront change in single patch. V3: Changes as suggestion from David Vrabel, ensure pages are not freed untill grant acess is ended. V2: Improve patch comments. Signed-off-by: Annie Li <annie.li@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2014-01-251-50/+46
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) BPF debugger and asm tool by Daniel Borkmann. 2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann. 3) Correct reciprocal_divide and update users, from Hannes Frederic Sowa and Daniel Borkmann. 4) Currently we only have a "set" operation for the hw timestamp socket ioctl, add a "get" operation to match. From Ben Hutchings. 5) Add better trace events for debugging driver datapath problems, also from Ben Hutchings. 6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we have a small send and a previous packet is already in the qdisc or device queue, defer until TX completion or we get more data. 7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko. 8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel Borkmann. 9) Share IP header compression code between Bluetooth and IEEE802154 layers, from Jukka Rissanen. 10) Fix ipv6 router reachability probing, from Jiri Benc. 11) Allow packets to be captured on macvtap devices, from Vlad Yasevich. 12) Support tunneling in GRO layer, from Jerry Chu. 13) Allow bonding to be configured fully using netlink, from Scott Feldman. 14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can already get the TCI. From Atzm Watanabe. 15) New "Heavy Hitter" qdisc, from Terry Lam. 16) Significantly improve the IPSEC support in pktgen, from Fan Du. 17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom Herbert. 18) Add Proportional Integral Enhanced packet scheduler, from Vijay Subramanian. 19) Allow openvswitch to mmap'd netlink, from Thomas Graf. 20) Key TCP metrics blobs also by source address, not just destination address. From Christoph Paasch. 21) Support 10G in generic phylib. From Andy Fleming. 22) Try to short-circuit GRO flow compares using device provided RX hash, if provided. From Tom Herbert. The wireless and netfilter folks have been busy little bees too. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits) net/cxgb4: Fix referencing freed adapter ipv6: reallocate addrconf router for ipv6 address when lo device up fib_frontend: fix possible NULL pointer dereference rtnetlink: remove IFLA_BOND_SLAVE definition rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info qlcnic: update version to 5.3.55 qlcnic: Enhance logic to calculate msix vectors. qlcnic: Refactor interrupt coalescing code for all adapters. qlcnic: Update poll controller code path qlcnic: Interrupt code cleanup qlcnic: Enhance Tx timeout debugging. qlcnic: Use bool for rx_mac_learn. bonding: fix u64 division rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC sfc: Use the correct maximum TX DMA ring size for SFC9100 Add Shradha Shah as the sfc driver maintainer. net/vxlan: Share RX skb de-marking and checksum checks with ovs tulip: cleanup by using ARRAY_SIZE() ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called net/cxgb4: Don't retrieve stats during recovery ...
| * xen-netfront: add support for IPv6 offloadsPaul Durrant2014-01-161-5/+43
| | | | | | | | | | | | | | | | | | | | | | This patch adds support for IPv6 checksum offload and GSO when those features are available in the backend. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * xen-netfront: use new skb_checksum_setup functionPaul Durrant2014-01-141-45/+3
| | | | | | | | | | | | | | | | | | | | | | | | Use skb_checksum_setup to set up partial checksum offsets rather then a private implementation. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | xen/pvhvm: If xen_platform_pci=0 is set don't blow up (v4).Konrad Rzeszutek Wilk2014-01-031-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The user has the option of disabling the platform driver: 00:02.0 Unassigned class [ff80]: XenSource, Inc. Xen Platform Device (rev 01) which is used to unplug the emulated drivers (IDE, Realtek 8169, etc) and allow the PV drivers to take over. If the user wishes to disable that they can set: xen_platform_pci=0 (in the guest config file) or xen_emul_unplug=never (on the Linux command line) except it does not work properly. The PV drivers still try to load and since the Xen platform driver is not run - and it has not initialized the grant tables, most of the PV drivers stumble upon: input: Xen Virtual Keyboard as /devices/virtual/input/input5 input: Xen Virtual Pointer as /devices/virtual/input/input6M ------------[ cut here ]------------ kernel BUG at /home/konrad/ssd/konrad/linux/drivers/xen/grant-table.c:1206! invalid opcode: 0000 [#1] SMP Modules linked in: xen_kbdfront(+) xenfs xen_privcmd CPU: 6 PID: 1389 Comm: modprobe Not tainted 3.13.0-rc1upstream-00021-ga6c892b-dirty #1 Hardware name: Xen HVM domU, BIOS 4.4-unstable 11/26/2013 RIP: 0010:[<ffffffff813ddc40>] [<ffffffff813ddc40>] get_free_entries+0x2e0/0x300 Call Trace: [<ffffffff8150d9a3>] ? evdev_connect+0x1e3/0x240 [<ffffffff813ddd0e>] gnttab_grant_foreign_access+0x2e/0x70 [<ffffffffa0010081>] xenkbd_connect_backend+0x41/0x290 [xen_kbdfront] [<ffffffffa0010a12>] xenkbd_probe+0x2f2/0x324 [xen_kbdfront] [<ffffffff813e5757>] xenbus_dev_probe+0x77/0x130 [<ffffffff813e7217>] xenbus_frontend_dev_probe+0x47/0x50 [<ffffffff8145e9a9>] driver_probe_device+0x89/0x230 [<ffffffff8145ebeb>] __driver_attach+0x9b/0xa0 [<ffffffff8145eb50>] ? driver_probe_device+0x230/0x230 [<ffffffff8145eb50>] ? driver_probe_device+0x230/0x230 [<ffffffff8145cf1c>] bus_for_each_dev+0x8c/0xb0 [<ffffffff8145e7d9>] driver_attach+0x19/0x20 [<ffffffff8145e260>] bus_add_driver+0x1a0/0x220 [<ffffffff8145f1ff>] driver_register+0x5f/0xf0 [<ffffffff813e55c5>] xenbus_register_driver_common+0x15/0x20 [<ffffffff813e76b3>] xenbus_register_frontend+0x23/0x40 [<ffffffffa0015000>] ? 0xffffffffa0014fff [<ffffffffa001502b>] xenkbd_init+0x2b/0x1000 [xen_kbdfront] [<ffffffff81002049>] do_one_initcall+0x49/0x170 .. snip.. which is hardly nice. This patch fixes this by having each PV driver check for: - if running in PV, then it is fine to execute (as that is their native environment). - if running in HVM, check if user wanted 'xen_emul_unplug=never', in which case bail out and don't load any PV drivers. - if running in HVM, and if PCI device 5853:0001 (xen_platform_pci) does not exist, then bail out and not load PV drivers. - (v2) if running in HVM, and if the user wanted 'xen_emul_unplug=ide-disks', then bail out for all PV devices _except_ the block one. Ditto for the network one ('nics'). - (v2) if running in HVM, and if the user wanted 'xen_emul_unplug=unnecessary' then load block PV driver, and also setup the legacy IDE paths. In (v3) make it actually load PV drivers. Reported-by: Sander Eikelenboom <linux@eikelenboom.it Reported-by: Anthony PERARD <anthony.perard@citrix.com> Reported-and-Tested-by: Fabio Fantoni <fabio.fantoni@m2r.biz> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [v2: Add extra logic to handle the myrid ways 'xen_emul_unplug' can be used per Ian and Stefano suggestion] [v3: Make the unnecessary case work properly] [v4: s/disks/ide-disks/ spotted by Fabio] Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> [for PCI parts] CC: stable@vger.kernel.org
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2013-11-191-3/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: "Mostly these are fixes for fallout due to merge window changes, as well as cures for problems that have been with us for a much longer period of time" 1) Johannes Berg noticed two major deficiencies in our genetlink registration. Some genetlink protocols we passing in constant counts for their ops array rather than something like ARRAY_SIZE(ops) or similar. Also, some genetlink protocols were using fixed IDs for their multicast groups. We have to retain these fixed IDs to keep existing userland tools working, but reserve them so that other multicast groups used by other protocols can not possibly conflict. In dealing with these two problems, we actually now use less state management for genetlink operations and multicast groups. 2) When configuring interface hardware timestamping, fix several drivers that simply do not validate that the hwtstamp_config value is one the driver actually supports. From Ben Hutchings. 3) Invalid memory references in mwifiex driver, from Amitkumar Karwar. 4) In dev_forward_skb(), set the skb->protocol in the right order relative to skb_scrub_packet(). From Alexei Starovoitov. 5) Bridge erroneously fails to use the proper wrapper functions to make calls to netdev_ops->ndo_vlan_rx_{add,kill}_vid. Fix from Toshiaki Makita. 6) When detaching a bridge port, make sure to flush all VLAN IDs to prevent them from leaking, also from Toshiaki Makita. 7) Put in a compromise for TCP Small Queues so that deep queued devices that delay TX reclaim non-trivially don't have such a performance decrease. One particularly problematic area is 802.11 AMPDU in wireless. From Eric Dumazet. 8) Fix crashes in tcp_fastopen_cache_get(), we can see NULL socket dsts here. Fix from Eric Dumzaet, reported by Dave Jones. 9) Fix use after free in ipv6 SIT driver, from Willem de Bruijn. 10) When computing mergeable buffer sizes, virtio-net fails to take the virtio-net header into account. From Michael Dalton. 11) Fix seqlock deadlock in ip4_datagram_connect() wrt. statistic bumping, this one has been with us for a while. From Eric Dumazet. 12) Fix NULL deref in the new TIPC fragmentation handling, from Erik Hugne. 13) 6lowpan bit used for traffic classification was wrong, from Jukka Rissanen. 14) macvlan has the same issue as normal vlans did wrt. propagating LRO disabling down to the real device, fix it the same way. From Michal Kubecek. 15) CPSW driver needs to soft reset all slaves during suspend, from Daniel Mack. 16) Fix small frame pacing in FQ packet scheduler, from Eric Dumazet. 17) The xen-netfront RX buffer refill timer isn't properly scheduled on partial RX allocation success, from Ma JieYue. 18) When ipv6 ping protocol support was added, the AF_INET6 protocol initialization cleanup path on failure was borked a little. Fix from Vlad Yasevich. 19) If a socket disconnects during a read/recvmsg/recvfrom/etc that blocks we can do the wrong thing with the msg_name we write back to userspace. From Hannes Frederic Sowa. There is another fix in the works from Hannes which will prevent future problems of this nature. 20) Fix route leak in VTI tunnel transmit, from Fan Du. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits) genetlink: make multicast groups const, prevent abuse genetlink: pass family to functions using groups genetlink: add and use genl_set_err() genetlink: remove family pointer from genl_multicast_group genetlink: remove genl_unregister_mc_group() hsr: don't call genl_unregister_mc_group() quota/genetlink: use proper genetlink multicast APIs drop_monitor/genetlink: use proper genetlink multicast APIs genetlink: only pass array to genl_register_family_with_ops() tcp: don't update snd_nxt, when a socket is switched from repair mode atm: idt77252: fix dev refcnt leak xfrm: Release dst if this dst is improper for vti tunnel netlink: fix documentation typo in netlink_set_err() be2net: Delete secondary unicast MAC addresses during be_close be2net: Fix unconditional enabling of Rx interface options net, virtio_net: replace the magic value ping: prevent NULL pointer dereference on write to msg_name bnx2x: Prevent "timeout waiting for state X" bnx2x: prevent CFC attention bnx2x: Prevent panic during DMAE timeout ...
| * xen-netfront: fix missing rx_refill_timer when allocate memory failedMa JieYue2013-11-181-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a bug in xennet_alloc_rx_buffers, when allocating page or sk_buff failed, and at the same time rx_batch queue not empty, the rx_refill_timer timer won't be scheduled. If finally the remaining request buffers in rx ring less than what backend driver expected, the backend driver would think of rx ring as full and start dropping packets. In such situation, there is no way for the netfront driver to recover automatically, so that the device can not work properly. The patch fixes the problem by always scheduling rx_refill_timer timer when alloc_page or __netdev_alloc_skb fails, no matter whether rx_batch queue is empty or not. It ensures that the rx ring request buffers will finally meet the backend needs. Signed-off-by: Ma JieYue <jieyue.majy@alibaba-inc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'core-locking-for-linus' of ↵Linus Torvalds2013-11-141-0/+6
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core locking changes from Ingo Molnar: "The biggest changes: - add lockdep support for seqcount/seqlocks structures, this unearthed both bugs and required extra annotation. - move the various kernel locking primitives to the new kernel/locking/ directory" * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) block: Use u64_stats_init() to initialize seqcounts locking/lockdep: Mark __lockdep_count_forward_deps() as static lockdep/proc: Fix lock-time avg computation locking/doc: Update references to kernel/mutex.c ipv6: Fix possible ipv6 seqlock deadlock cpuset: Fix potential deadlock w/ set_mems_allowed seqcount: Add lockdep functionality to seqcount/seqlock structures net: Explicitly initialize u64_stats_sync structures for lockdep locking: Move the percpu-rwsem code to kernel/locking/ locking: Move the lglocks code to kernel/locking/ locking: Move the rwsem code to kernel/locking/ locking: Move the rtmutex code to kernel/locking/ locking: Move the semaphore core to kernel/locking/ locking: Move the spinlock code to kernel/locking/ locking: Move the lockdep code to kernel/locking/ locking: Move the mutex code to kernel/locking/ hung_task debugging: Add tracepoint to report the hang x86/locking/kconfig: Update paravirt spinlock Kconfig description lockstat: Report avg wait and hold times lockdep, x86/alternatives: Drop ancient lockdep fixup message ...
| * net: Explicitly initialize u64_stats_sync structures for lockdepJohn Stultz2013-11-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to enable lockdep on seqcount/seqlock structures, we must explicitly initialize any locks. The u64_stats_sync structure, uses a seqcount, and thus we need to introduce a u64_stats_init() function and use it to initialize the structure. This unfortunately adds a lot of fairly trivial initialization code to a number of drivers. But the benefit of ensuring correctness makes this worth while. Because these changes are required for lockdep to be enabled, and the changes are quite trivial, I've not yet split this patch out into 30-some separate patches, as I figured it would be better to get the various maintainers thoughts on how to best merge this change along with the seqcount lockdep enablement. Feedback would be appreciated! Signed-off-by: John Stultz <john.stultz@linaro.org> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: James Morris <jmorris@namei.org> Cc: Jesse Gross <jesse@nicira.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Mirko Lindner <mlindner@marvell.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Roger Luethi <rl@hellgate.ch> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Simon Horman <horms@verge.net.au> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Wensong Zhang <wensong@linux-vs.org> Cc: netdev@vger.kernel.org Link: http://lkml.kernel.org/r/1381186321-4906-2-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | xen-netfront: convert to GRO APIWei Liu2013-10-021-1/+3
|/ | | | | | | | | | | | | Anirban was seeing netfront received MTU size packets, which downgraded throughput. The following patch makes netfront use GRO API which improves throughput for that case. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Cc: Anirban Chakraborty <abchak@juniper.net> Cc: Ian Campbell <ian.campbell@citrix.com> Acked-by: Konrad Wilk <konrad.wilk@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: pull on receive skb may need to happen earlierJan Beulich2013-07-171-18/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to commit 3683243b ("xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RX") xennet_fill_frags() may end up filling MAX_SKB_FRAGS + 1 fragments in a receive skb, and only reduce the fragment count subsequently via __pskb_pull_tail(). That's a result of xennet_get_responses() allowing a maximum of one more slot to be consumed (and intermediately transformed into a fragment) if the head slot has a size less than or equal to RX_COPY_THRESHOLD. Hence we need to adjust xennet_fill_frags() to pull earlier if we reached the maximum fragment count - due to the described behavior of xennet_get_responses() this guarantees that at least the first fragment will get completely consumed, and hence the fragment count reduced. In order to not needlessly call __pskb_pull_tail() twice, make the original call conditional upon the pull target not having been reached yet, and defer the newly added one as much as possible (an alternative would have been to always call the function right before the call to xennet_fill_frags(), but that would imply more frequent cases of needing to call it twice). Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: stable@vger.kernel.org (3.6 onwards) Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen: Use more current logging stylesJoe Perches2013-07-011-15/+13
| | | | | | | | | | | | | | | Instead of mixing printk and pr_<level> forms, just use pr_<level> Miscellaneous changes around these conversions: Add a missing newline to avoid message interleaving, coalesce formats, reflow modified lines to 80 columns. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: use skb_partial_csum_set() to simplify the codesLi RongQing2013-06-111-12/+8
| | | | | | | | | use skb_partial_csum_set() to simplify the codes Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: split event channels support for Xen frontend driverWei Liu2013-05-231-29/+149
| | | | | | | | | | | | | | | This patch adds a new feature called feature-split-event-channels for netfront, enabling it to handle TX and RX events separately. If netback does not support this feature, it falls back to use single event channel. If netfront fails to setup split event channels, it will try falling back to single event channel. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: avoid leaking resources when setup_netfront failsWei Liu2013-05-201-12/+21
| | | | | | | | We should correctly free related resources (grant ref, memory page, evtchn) when setup_netfront fails. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: reduce gso_max_size to account for max TCP headerWei Liu2013-04-221-2/+15
| | | | | | | | | | | | | The maximum packet including header that can be handled by netfront / netback wire format is 65535. Reduce gso_max_size accordingly. Drop skb and print warning when skb->len > 65535. This can 1) save the effort to send malformed packet to netback, 2) help spotting misconfiguration of netfront in the future. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: frags -> slots in log messageWei Liu2013-04-221-2/+2
| | | | | | | | Also fix a typo in comment. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: frags -> slots in xennet_get_responsesWei Liu2013-03-251-9/+9
| | | | | | | | | | | This function is in fact counting the ring slots required for responses. Separate the concepts of ring slots and skb frags make the code clearer, as now netfront and netback can have different MAX_SKB_FRAGS, slot and frag are not mapped 1:1 any more. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: remove unused variable `extra'Wei Liu2013-03-251-7/+1
| | | | | | | | | | | | This variable is supposed to hold reference to the last extra_info in the loop. However there is only type of extra info here and the loop to process extra info is missing, so this variable is never used and causes confusion. Remove it at the moment. We can add it back when necessary. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen/netfront: improve truesize trackingIan Campbell2013-01-071-23/+4
| | | | | | | | | | | | | | | | | | Using RX_COPY_THRESHOLD is incorrect if the SKB is actually smaller than that. We have already accounted for this in NETFRONT_SKB_CB(skb)->pull_to so use that instead. Fixes WARN_ON from skb_try_coalesce. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: annie li <annie.li@oracle.com> Cc: xen-devel@lists.xen.org Cc: netdev@vger.kernel.org Cc: stable@kernel.org # 3.7.x only Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net: fix up function prototypes after __dev* removalsGreg Kroah-Hartman2012-12-071-1/+1
| | | | | | | | | | | | The __dev* removal patches for the network drivers ended up messing up the function prototypes for a bunch of drivers. This patch fixes all of them back up to be properly aligned. Bonus is that this almost removes 100 lines of code, always a nice surprise. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen-netfront: remove __dev* attributesBill Pemberton2012-12-031-4/+4
| | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* xen/netfront: handle compound page fragments on transmitIan Campbell2012-11-211-21/+77
| | | | | | | | | | | | | | | | | | | | | | An SKB paged fragment can consist of a compound page with order > 0. However the netchannel protocol deals only in PAGE_SIZE frames. Handle this in xennet_make_frags by iterating over the frames which make up the page. This is the netfront equivalent to 6a8ed462f16b for netback. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: netdev@vger.kernel.org Cc: xen-devel@lists.xen.org Cc: Eric Dumazet <edumazet@google.com> Cc: Konrad Rzeszutek Wilk <konrad@kernel.org> Cc: ANNIE LI <annie.li@oracle.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: Stefan Bader <stefan.bader@canonical.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'stable/for-linus-3.7-arm-tag' of ↵Linus Torvalds2012-10-071-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull ADM Xen support from Konrad Rzeszutek Wilk: Features: * Allow a Linux guest to boot as initial domain and as normal guests on Xen on ARM (specifically ARMv7 with virtualized extensions). PV console, block and network frontend/backends are working. Bug-fixes: * Fix compile linux-next fallout. * Fix PVHVM bootup crashing. The Xen-unstable hypervisor (so will be 4.3 in a ~6 months), supports ARMv7 platforms. The goal in implementing this architecture is to exploit the hardware as much as possible. That means use as little as possible of PV operations (so no PV MMU) - and use existing PV drivers for I/Os (network, block, console, etc). This is similar to how PVHVM guests operate in X86 platform nowadays - except that on ARM there is no need for QEMU. The end result is that we share a lot of the generic Xen drivers and infrastructure. Details on how to compile/boot/etc are available at this Wiki: http://wiki.xen.org/wiki/Xen_ARMv7_with_Virtualization_Extensions and this blog has links to a technical discussion/presentations on the overall architecture: http://blog.xen.org/index.php/2012/09/21/xensummit-sessions-new-pvh-virtualisation-mode-for-arm-cortex-a15arm-servers-and-x86/ * tag 'stable/for-linus-3.7-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (21 commits) xen/xen_initial_domain: check that xen_start_info is initialized xen: mark xen_init_IRQ __init xen/Makefile: fix dom-y build arm: introduce a DTS for Xen unprivileged virtual machines MAINTAINERS: add myself as Xen ARM maintainer xen/arm: compile netback xen/arm: compile blkfront and blkback xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree xen/arm: receive Xen events on ARM xen/arm: initialize grant_table on ARM xen/arm: get privilege status xen/arm: introduce CONFIG_XEN on ARM xen: do not compile manage, balloon, pci, acpi, pcpu and cpu_hotplug on ARM xen/arm: Introduce xen_ulong_t for unsigned long xen/arm: Xen detection and shared_info page mapping docs: Xen ARM DT bindings xen/arm: empty implementation of grant_table arch specific functions xen/arm: sync_bitops xen/arm: page.h definitions xen/arm: hypercalls ...
| * xen/arm: compile netbackStefano Stabellini2012-08-081-0/+1
| | | | | | | | | | | | Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2012-08-311-29/+10
|\ \ | |/ | | | | | | | | | | | | Merge the 'net' tree to get the recent set of netfilter bug fixes in order to assist with some merge hassles Pablo is going to have to deal with for upcoming changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RXIan Campbell2012-08-301-29/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I'm slightly concerned by the "only in exceptional circumstances" comment on __pskb_pull_tail but the structure of an skb just created by netfront shouldn't hit any of the especially slow cases. This approach still does slightly more work than the old way, since if we pull up the entire first frag we now have to shuffle everything down where before we just received into the right place in the first place. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Mel Gorman <mgorman@suse.de> Cc: xen-devel@lists.xensource.com Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: move and rename netif_notify_peers()Amerigo Wang2012-08-141-1/+1
|/ | | | | | | | | | | | I believe net/core/dev.c is a better place for netif_notify_peers(), because other net event notify functions also stay in this file. And rename it to netdev_notify_peers(). Cc: David S. Miller <davem@davemloft.net> Cc: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xen/netfront: teardown the device before unregistering it.Ian Campbell2012-06-271-4/+4
| | | | | | | | | | | | | | | | | | | | | | | Fixes: [ 15.470311] WARNING: at /local/scratch/ianc/devel/kernels/linux/fs/sysfs/file.c:498 sysfs_attr_ns+0x95/0xa0() [ 15.470326] sysfs: kobject eth0 without dirent [ 15.470333] Modules linked in: [ 15.470342] Pid: 12, comm: xenwatch Not tainted 3.4.0-x86_32p-xenU #93 and [ 9.150554] BUG: unable to handle kernel paging request at 2b359000 [ 9.150577] IP: [<c1279561>] linkwatch_do_dev+0x81/0xc0 [ 9.150592] *pdpt = 000000002c3c9027 *pde = 0000000000000000 [ 9.150604] Oops: 0002 [#1] SMP [ 9.150613] Modules linked in: This is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675190 Reported-by: George Shuklin <george.shuklin@gmail.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Tested-by: William Dauchy <wdauchy@gmail.com> Cc: stable@kernel.org Cc: 675190@bugs.debian.org Signed-off-by: David S. Miller <davem@davemloft.net>
* xen: do not disable netfront in dom0Marek Marczykowski2012-05-221-6/+0
| | | | | | | | | | | Netfront driver can be also useful in dom0, eg when all NICs are assigned to some domU (aka driver domain). Then using netback in domU and netfront in dom0 is the only way to get network access in dom0. Signed-off-by: Marek Marczykowski <marmarek@invisiblethingslab.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'stable/for-linus-3.4-rc1-tag' of ↵Linus Torvalds2012-04-061-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull xen fixes from Konrad Rzeszutek Wilk: "Two fixes for regressions: * one is a workaround that will be removed in v3.5 with proper fix in the tip/x86 tree, * the other is to fix drivers to load on PV (a previous patch made them only load in PVonHVM mode). The rest are just minor fixes in the various drivers and some cleanup in the core code." * tag 'stable/for-linus-3.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pcifront: avoid pci_frontend_enable_msix() falsely returning success xen/pciback: fix XEN_PCI_OP_enable_msix result xen/smp: Remove unnecessary call to smp_processor_id() xen/x86: Workaround 'x86/ioapic: Add register level checks to detect bogus io-apic entries' xen: only check xen_platform_pci_unplug if hvm
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