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2012-04-04kconfig-disable-a-few-options-rt.patchThomas Gleixner
Disable stuff which is known to have issues on RT Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04dm: Make rt awareThomas Gleixner
Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has interrupts legitimately enabled here as we cant deadlock against the irq thread due to the "sleeping spinlocks" conversion. Reported-by: Luis Claudio R. Goncalves <lclaudio@uudg.org> Cc: stable-rt@vger.kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04scsi-fcoe-rt-aware.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04sysrq: Allow immediate Magic SysRq output for PREEMPT_RT_FULLFrank Rowand
Add a CONFIG option to allow the output from Magic SysRq to be output immediately, even if this causes large latencies. If PREEMPT_RT_FULL, printk() will not try to acquire the console lock when interrupts or preemption are disabled. If the console lock is not acquired the printk() output will be buffered, but will not be output immediately. Some drivers call into the Magic SysRq code with interrupts or preemption disabled, so the output of Magic SysRq will be buffered instead of printing immediately if this option is not selected. Even with this option selected, Magic SysRq output will be delayed if the attempt to acquire the console lock fails. Signed-off-by: Frank Rowand <frank.rowand@am.sony.com> Link: http://lkml.kernel.org/r/4E7CEF60.5020508@am.sony.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04kgdb/serial: Short term workaroundJason Wessel
On 07/27/2011 04:37 PM, Thomas Gleixner wrote: > - KGDB (not yet disabled) is reportedly unusable on -rt right now due > to missing hacks in the console locking which I dropped on purpose. > To work around this in the short term you can use this patch, in addition to the clocksource watchdog patch that Thomas brewed up. Comments are welcome of course. Ultimately the right solution is to change separation between the console and the HW to have a polled mode + work queue so as not to introduce any kind of latency. Thanks, Jason.
2012-04-04ARM: at91: tclib: Default to tclib timer for RTThomas Gleixner
RT is not too happy about the shared timer interrupt in AT91 devices. Default to tclib timer for RT. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04rt: Improve the serial console PASS_LIMITIngo Molnar
Beyond the warning: drivers/tty/serial/8250.c:1613:6: warning: unused variable ‘pass_counter’ [-Wunused-variable] the solution of just looping infinitely was ugly - up it to 1 million to give it a chance to continue in some really ugly situation. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers-tty-fix-omap-lock-crap.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04serial: 8250: Call flush_to_ldisc when the irq is threadedIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-04-04serial: 8250: Clean up the locking for -rtIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04md: raid5: Make raid5_percpu handling RT awareThomas Gleixner
__raid_run_ops() disables preemption with get_cpu() around the access to the raid5_percpu variables. That causes scheduling while atomic spews on RT. Serialize the access to the percpu data with a lock and keep the code preemptible. Reported-by: Udo van den Heuvel <udovdh@xs4all.nl> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Udo van den Heuvel <udovdh@xs4all.nl>
2012-04-04USB: Fix the mouse problem when copying large amounts of dataWu Zhangjin
When copying large amounts of data between the USB storage devices and the hard disk, the USB mouse will not work, this patch fixes it. [NOTE: This problem have been found in the Loongson family machines, not sure whether it is producible on other platforms] Signed-off-by: Hu Hongbing <huhb@lemote.com> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
2012-04-04drivers: net: gianfar: Make RT awareThomas Gleixner
The adjust_link() disables interrupts before taking the queue locks. On RT those locks are converted to "sleeping" locks and therefor the local_irq_save/restore must be converted to local_irq_save/restore_nort. Reported-by: Xianghua Xiao <xiaoxianghua@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Xianghua Xiao <xiaoxianghua@gmail.com>
2012-04-04drivers/net: vortex fix locking issuesSteven Rostedt
Argh, cut and paste wasn't enough... Use this patch instead. It needs an irq disable. But, believe it or not, on SMP this is actually better. If the irq is shared (as it is in Mark's case), we don't stop the irq of other devices from being handled on another CPU (unfortunately for Mark, he pinned all interrupts to one CPU). Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> drivers/net/ethernet/3com/3c59x.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-04-04drivers/net: fix livelock issuesThomas Gleixner
Preempt-RT runs into a live lock issue with the NETDEV_TX_LOCKED micro optimization. The reason is that the softirq thread is rescheduling itself on that return value. Depending on priorities it starts to monoplize the CPU and livelock on UP systems. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04tty: Do not disable interrupts in put_ldisc on -rtThomas Gleixner
Fixes the following on PREEMPT_RT: BUG: sleeping function called from invalid context at kernel/rtmutex.c:684 in_atomic(): 0, irqs_disabled(): 1, pid: 9116, name: sshd Pid: 9116, comm: sshd Not tainted 2.6.31-rc6-rt2 #6 Call Trace: [<ffffffff81034a4f>] __might_sleep+0xec/0xee [<ffffffff812fbc6d>] rt_spin_lock+0x34/0x75 [ffffffff81064a83>] atomic_dec_and_spin_lock+0x36/0x54 [<ffffffff811df7c7>] put_ldisc+0x57/0xa6 [<ffffffff811dfb87>] tty_ldisc_hangup+0xe7/0x19f [<ffffffff811d9224>] do_tty_hangup+0xff/0x319 [<ffffffff811d9453>] tty_vhangup+0x15/0x17 [<ffffffff811e1263>] pty_close+0x127/0x12b [<ffffffff811dac41>] tty_release_dev+0x1ad/0x4c0 .... Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04usb: Use local_irq_*_nort() variantsSteven Rostedt
[ tglx: Now that irqf_disabled is dead we should kill that ] Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04input: gameport: Do not disable interrupts on PREEMPT_RTIngo Molnar
Use the _nort() primitives. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04infiniband: Mellanox IB driver patch use _nort() primitivesSven-Thorsten Dietrich
Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT Kernel. Michael S. Tsirkin <mst@dev.mellanox.co.il> sayeth: "Basically, if you just make spin_lock_irqsave (and spin_lock_irq) not disable interrupts for non-raw spinlocks, I think all of infiniband will be fine without changes." Signed-off-by: Sven-Thorsten Dietrich <sven@thebigcorporation.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04ide: Do not disable interrupts for PREEMPT-RTIngo Molnar
Use the local_irq_*_nort variants. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04ata: Do not disable interrupts in ide code for preempt-rtSteven Rostedt
Use the local_irq_*_nort variants. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04hwlatdetect.patchCarsten Emde
Jon Masters developed this wonderful SMI detector. For details please consult Documentation/hwlat_detector.txt. It could be ported to Linux 3.0 RT without any major change. Signed-off-by: Carsten Emde <C.Emde@osadl.org>
2012-04-04pci: Use __wake_up_all_locked pci_unblock_user_cfg_access()Thomas Gleixner
The waitqueue is protected by the pci_lock, so we can just avoid to lock the waitqueue lock itself. That prevents the might_sleep()/scheduling while atomic problem on RT Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable-rt@vger.kernel.org
2012-04-04locking-various-init-fixes.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04of-convert-devtree-lock.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04OF: Fixup resursive locking code pathsThomas Gleixner
There is no real reason to use a rwlock for devtree_lock. It even could be a mutex, but unfortunately it's locked from cpu hotplug pathes which can't schedule :( So it needs to become a raw lock on rt as well. devtree_lock would be the only user of a raw_rw_lock, so we are better of cleaning the recursive locking pathes which allows us to convert devtree_lock to a read_lock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers: net: at91_ether: Make mdio protection -rt safeThomas Gleixner
Neither the phy interrupt nor the timer callback which updates the link status in absense of a phy interrupt are taking lp->lock which serializes the MDIO access. This works on mainline as at91 is an UP machine. On preempt-rt the timer callback can run even in the spin_lock_irq(&lp->lock) protected code pathes because spin_lock_irq is neither disabling interrupts nor disabling preemption. Fix this by adding proper locking to at91ether_phy_interrupt() and at91_check_ether() which serializes the access on -rt. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers: net: ehea: Make rx irq handler non-threaded (IRQF_NO_THREAD)Darren Hart
The underlying hardware is edge triggered but presented by XICS as level triggered. The edge triggered interrupts are not reissued after masking. This is not a problem in mainline which does not mask the interrupt (relying on the EOI mechanism instead). The threaded interrupts in PREEMPT_RT do mask the interrupt, and can lose interrupts that occurred while masked, resulting in a hung ethernet interface. The receive handler simply calls napi_schedule(), as such, there is no significant additional overhead in making this non-threaded, since we either wakeup the threaded irq handler to call napi_schedule(), or just call napi_schedule() directly to wakeup the softirqs. As the receive handler is lockless, there is no need to convert any of the ehea spinlock_t's to raw_spinlock_t's. Without this patch, a simple scp file copy loop would fail quickly (usually seconds). We have over two hours of sustained scp activity with the patch applied. Credit goes to Will Schmidt for lots of instrumentation and tracing which clarified the scenario and to Thomas Gleixner for the incredibly simple solution. Signed-off-by: Darren Hart <dvhltc@us.ibm.com> Acked-by: Will Schmidt <will_schmidt@vnet.ibm.com> Cc: Jan-Bernd Themann <themann@de.ibm.com> Cc: Nivedita Singhvi <niv@us.ibm.com> Cc: Brian King <bjking1@us.ibm.com> Cc: Michael Ellerman <ellerman@au1.ibm.com> Cc: Doug Maxey <doug.maxey@us.ibm.com> LKML-Reference: <4BF30793.5070300@us.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers/net: Use disable_irq_nosync() in 8139tooIngo Molnar
Use disable_irq_nosync() instead of disable_irq() as this might be called in atomic context with netpoll. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers/net: tulip_remove_one needs to call pci_disable_device()Ingo Molnar
Otherwise the device is not completely shut down. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04clocksource: TCLIB: Allow higher clock rates for clock eventsBenedikt Spranger
As default the TCLIB uses the 32KiHz base clock rate for clock events. Add a compile time selection to allow higher clock resulution. Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04drivers: random: Reduce preempt disabled regionIngo Molnar
No need to keep preemption disabled across the whole function. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-04-04intel_idle: Convert i7300_idle_lock to raw spinlockMike Galbraith
24 core Intel box's first exposure to 3.0.12-rt30-rc3 didn't go well. [ 27.104159] i7300_idle: loaded v1.55 [ 27.104192] BUG: scheduling while atomic: swapper/2/0/0x00000002 [ 27.104309] Pid: 0, comm: swapper/2 Tainted: G N 3.0.12-rt30-rc3-rt #1 [ 27.104317] Call Trace: [ 27.104338] [<ffffffff810046a5>] dump_trace+0x85/0x2e0 [ 27.104372] [<ffffffff8144eb00>] thread_return+0x12b/0x30b [ 27.104381] [<ffffffff8144f1b9>] schedule+0x29/0xb0 [ 27.104389] [<ffffffff814506e5>] rt_spin_lock_slowlock+0xc5/0x240 [ 27.104401] [<ffffffffa01f818f>] i7300_idle_notifier+0x3f/0x360 [i7300_idle] [ 27.104415] [<ffffffff814546c7>] notifier_call_chain+0x37/0x70 [ 27.104426] [<ffffffff81454748>] __atomic_notifier_call_chain+0x48/0x70 [ 27.104439] [<ffffffff81001a39>] cpu_idle+0x89/0xb0 [ 27.104449] bad: scheduling from the idle thread! Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1323258522.5057.73.camel@marge.simson.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-03-23iwl3945: fix possible il->txq NULL pointer dereference in delayed worksStanislaw Gruszka
commit 210787e82a0ac1ffb5d7be1c796f0c51050849ad upstream. On il3945_down procedure we free tx queue data and nullify il->txq pointer. After that we drop mutex and then cancel delayed works. There is possibility, that after drooping mutex and before the cancel, some delayed work will start and crash while trying to send commands to the device. For example, here is reported crash in il3945_bg_reg_txpower_periodic(): https://bugzilla.kernel.org/show_bug.cgi?id=42766#c10 Patch fix problem by adding il->txq check on works that send commands, hence utilize tx queue. Reported-by: Clemens Eisserer <linuxhippy@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-19hwmon: (zl6100) Enable interval between chip accesses for all chipsGuenter Roeck
commit fecfb64422d91a9621a3f96ab75c3a5f13e80b58 upstream. Intersil reports that all chips supported by the zl6100 driver require an interval between chip accesses, even ZL2004 and ZL6105 which were thought to be safe. Reported-by: Vivek Gani <vgani@intersil.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19target: Fix compatible reservation handling (CRH=1) with legacy RESERVE/RELEASENicholas Bellinger
commit 087a03b3ea1c8d6e2d5743a8d1c6d571058caa04 upstream. This patch addresses a bug with target_check_scsi2_reservation_conflict() return checking in target_scsi2_reservation_[reserve,release]() that was preventing CRH=1 operation from silently succeeding in the two special cases defined by SPC-3, and not failing with reservation conflict status when dealing with legacy RESERVE/RELEASE + active SPC-3 PR logic. Also explictly set cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT during the early non reservation holder failure from pr_ops->t10_seq_non_holder() check in transport_generic_cmd_sequencer() for fabrics that already expect it to be set. This bug was originally introduced in mainline commit: commit eacac00ce5bfde8086cd0615fb53c986f7f970fe Author: Christoph Hellwig <hch@infradead.org> Date: Thu Nov 3 17:50:40 2011 -0400 target: split core_scsi2_emulate_crh Reported-by: Martin Svec <martin.svec@zoner.cz> Cc: Martin Svec <martin.svec@zoner.cz> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19iscsi-target: Fix reservation conflict -EBUSY response handling bugNicholas Bellinger
commit 00fdc6bbef77844ce397a7de7acfaf25e8e2e4eb upstream. This patch addresses a iscsi-target specific bug related to reservation conflict handling in iscsit_handle_scsi_cmd() that has been causing reservation conflicts to complete and not fail as expected due to incorrect errno checking. The problem occured with the change to return -EBUSY from transport_generic_cmd_sequencer() -> transport_generic_allocate_tasks() failures, that broke iscsit_handle_scsi_cmd() checking for -EINVAL in order to invoke a non GOOD status response. This was manifesting itself as data corruption with legacy SPC-2 reservations, but also effects iscsi-target LUNs with SPC-3 persistent reservations. This bug was originally introduced in lio-core commit: commit 03e98c9eb916f3f0868c1dc344dde2a60287ff72 Author: Nicholas Bellinger <nab@linux-iscsi.org> Date: Fri Nov 4 02:36:16 2011 -0700 target: Address legacy PYX_TRANSPORT_* return code breakage Reported-by: Martin Svec <martin.svec@zoner.cz> Cc: Martin Svec <martin.svec@zoner.cz> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19i2c-algo-bit: Fix spurious SCL timeouts under heavy loadVille Syrjala
commit 8ee161ce5e0cfc689eb677f227a6248191165fac upstream. When the system is under heavy load, there can be a significant delay between the getscl() and time_after() calls inside sclhi(). That delay may cause the time_after() check to trigger after SCL has gone high, causing sclhi() to return -ETIMEDOUT. To fix the problem, double check that SCL is still low after the timeout has been reached, before deciding to return -ETIMEDOUT. Signed-off-by: Ville Syrjala <syrjala@sci.fi> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19rapidio/tsi721: fix bug in register offset definitionsAlexandre Bounine
commit 9bbad7da76b3dd578fb55c862624366a8c9ccd22 upstream. Fix indexed register offset definitions that use decimal (wrong) instead of hexadecimal (correct) notation for indexing multipliers. Incorrect definitions do not affect Tsi721 driver in its current default configuration because it uses only IDB queue 0. Loss of inbound doorbell functionality should be observed if queue other than 0 is used. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Chul Kim <chul.kim@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19hwmon: (w83627ehf) Fix temp2 source for W83627UHGJean Delvare
commit aacb6b0052692c72fe0cb94c6b547202def6ef46 upstream. Properly set the source of temp2 for the W83627UHG. Also fix a comment right before that, and document the W83627UHG as reporting up to 3 temperatures. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19hwmon: (w83627ehf) Fix memory leak in probe functionGuenter Roeck
commit 32260d94408c553dca4ce54104edf79941a27536 upstream. The driver probe function leaked memory if creating the cpu0_vid attribute file failed. Fix by converting the driver to use devm_kzalloc. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19hwmon: (w83627ehf) Fix writing into fan_stop_time for NCT6775F/NCT6776FGuenter Roeck
commit 33fa9b620409edfc71aa6cf01a51f990fbe46ab8 upstream. NCT6775F and NCT6776F have their own set of registers for FAN_STOP_TIME. The correct registers were used to read FAN_STOP_TIME, but writes used the wrong registers. Fix it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19block, sx8: fix pointer math issue getting fw versionDan Carpenter
commit ea5f4db8ece896c2ab9eafa0924148a2596c52e4 upstream. "mem" is type u8. We need parenthesis here or it screws up the pointer math probably leading to an oops. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19regulator: Fix setting selector in tps6524x set_voltage functionAxel Lin
commit f03570cf1709397ebe656608266b44ec772960c2 upstream. Don't assign the voltage to selector. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19usb: asix: Patch for Sitecom LN-031Joerg Neikes
commit 4e50391968849860dff1aacde358b4eb14aa5127 upstream. This patch adds support for the Sitecom LN-031 USB adapter with a AX88178 chip. Added USB id to find correct driver for AX88178 1000 Ethernet adapter. Signed-off-by: Joerg Neikes <j.neikes@midlandgate.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19r8169: corrupted IP fragments fix for large mtu.françois romieu
[ Upstream commit 9c5028e9da1255dd2b99762d8627b88b29f68cce ] Noticed with the 8168d (-vb-gr, aka RTL_GIGA_MAC_VER_26). ConfigX registers should only be written while the Config9346 lock is held. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Reported-by: Nick Bowler <nbowler@elliptictech.com> Cc: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19packetengines: fix config defaultstephen hemminger
[ Upstream commit 3f2010b2ad3d66d5291497c9b274315e7b807ecd ] As part of the big network driver reorg, each vendor directory defaults to yes, so that older config's can migrate correctly. Looks like this one got missed. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19vmxnet3: Fix transport header sizeShreyas Bhatewara
[ Upstream commit efead8710aad9e384730ecf25eae0287878840d7 ] Fix transport header size Fix the transpoert header size for UDP packets. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19sfc: Fix assignment of ip_summed for pre-allocated skbsBen Hutchings
[ Upstream commit ff3bc1e7527504a93710535611b2f812f3bb89bf ] When pre-allocating skbs for received packets, we set ip_summed = CHECKSUM_UNNCESSARY. We used to change it back to CHECKSUM_NONE when the received packet had an incorrect checksum or unhandled protocol. Commit bc8acf2c8c3e43fcc192762a9f964b3e9a17748b ('drivers/net: avoid some skb->ip_summed initializations') mistakenly replaced the latter assignment with a DEBUG-only assertion that ip_summed == CHECKSUM_NONE. This assertion is always false, but it seems no-one has exercised this code path in a DEBUG build. Fix this by moving our assignment of CHECKSUM_UNNECESSARY into efx_rx_packet_gro(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-19ppp: fix 'ppp_mp_reconstruct bad seq' errorsBen McKeegan
[ Upstream commit 8a49ad6e89feb5015e77ce6efeb2678947117e20 ] This patch fixes a (mostly cosmetic) bug introduced by the patch 'ppp: Use SKB queue abstraction interfaces in fragment processing' found here: http://www.spinics.net/lists/netdev/msg153312.html The above patch rewrote and moved the code responsible for cleaning up discarded fragments but the new code does not catch every case where this is necessary. This results in some discarded fragments remaining in the queue, and triggering a 'bad seq' error on the subsequent call to ppp_mp_reconstruct. Fragments are discarded whenever other fragments of the same frame have been lost. This can generate a lot of unwanted and misleading log messages. This patch also adds additional detail to the debug logging to make it clearer which fragments were lost and which other fragments were discarded as a result of losses. (Run pppd with 'kdebug 1' option to enable debug logging.) Signed-off-by: Ben McKeegan <ben@netservers.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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