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* ARM: PL08x: clean up LLI lookupRussell King - ARM Linux2011-01-041-17/+20
| | | | | | | | | | | | | As the LLI list is an array, we can use maths to locate which LLI index we're currently at, and then sum up the remaining LLI entries until we reach the end of the list. This makes the code much easier to read, and much less susceptible to falling off the end of the array. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: rename lli.next to lli.lliRussell King - ARM Linux2011-01-041-6/+6
| | | | | | | | | The LLI pointer in the documentation is placed into the LLI register, so name it LLI rather than 'next'. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: use 'u32' for LLI structure members, not dma_addr_tRussell King - ARM Linux2011-01-041-4/+5
| | | | | | | | | Use 'u32' for the LLI structure members, which are defined by hardware to be 32-bit. dma_addr_t is much more vague about its actual size. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: use 'size_t' for lengthsRussell King - ARM Linux2011-01-042-25/+19
| | | | | | | | | | | Use size_t for variables denoting lengths throughout, and use the 'z' qualifier for printing the value. For safety, add a BUG_ON() in pl08x_fill_lli_for_desc() to catch the remainder potentially becoming negative. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: don't try to use llis_bus as a pointerRussell King - ARM Linux2011-01-041-6/+3
| | | | | | | | | | | llis_bus is the DMA address of the LLI array. Casting it to be a pointer just to be able to use pointer arithmetic on it is not nice. We can trivially deal with the places where we do arithmetic on it, and it's actually cleaner this way. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: don't assume that the LLI pointer has the bus bit clearRussell King - ARM Linux2011-01-041-1/+1
| | | | | | | | | | We only want use the address of the LLI pointer when locating the corresponding structure in memory, so clear the master bus selection bit. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: ensure loops use cpu_relax()Russell King - ARM Linux2011-01-041-3/+3
| | | | | | | | | Tight loops should use cpu_relax() to allow CPUs to reduce power consumption while waiting for events. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: consolidate physical channel release codeRussell King - ARM Linux2011-01-041-14/+14
| | | | | | | | Consolidate duplicated channel release code into release_phy_channel() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: consolidate common txd initializationRussell King - ARM Linux2011-01-041-13/+14
| | | | | | | | Consolidate code which allocates and initializes txds. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: avoid 'void *' struct fields when we can type them properlyRussell King - ARM Linux2011-01-042-9/+12
| | | | | | | | | | Avoid using 'void *' struct fields when the structs are not defined in linux/amba/pl08x.h - instead, forward declare the struct names, and use these instead. This ensures we have proper typechecking. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: constify vendor data pointersRussell King - ARM Linux2011-01-041-2/+2
| | | | | | | | We should never modify the vendor data structure so make it const. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: remove circular buffer supportRussell King - ARM Linux2011-01-041-51/+20
| | | | | | | | | | The driver already won't initialize a channel with a circular buffer; the check in pl08x_prep_channel_resources() sees to that. Remove circular buffer support for the time being. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: remove unnecessary NULL and BUG checksRussell King - ARM Linux2011-01-041-21/+0
| | | | | | | | | | | | | | | | | | | | The tasklet always is initialized with a non-NULL data argument. It is not possible for it to be called with a NULL data argument (unless something is very wrong in the tasklet code - in which case lots of stuff will break). Therefore, as plchan can never be NULL, remove this unnecessary BUG check. In pl08x_tasklet(), we've already dereferenced plchan->at, so it can't be NULL here. Remove this unnecessary BUG check. pl08x_fill_llis_for_desc() and pl08x_free_txd() are always called with a non-NULL txd argument - either as a consequence of the code paths or as a result of other checks already in place. We don't need to repeat the non-NULL check in these functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: remove unnecessary includesRussell King - ARM Linux2011-01-041-6/+1
| | | | | | | | | | | | We don't need to include linux/pci.h as we aren't a PCI driver. We aren't doing any processor specific functions, so asm/processor.h is not required. asm/cacheflush.h shouldn't be used, we have the DMA API for this. DMA interfaces aren't required as we're only implementing the dmaengine API and not a platform-private DMA API. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: prefix hex numbers with 0xRussell King - ARM Linux2011-01-041-9/+9
| | | | | | | | | A driver which emits both decimal and hex numbers in its printk creates confusion as to what is what. Prefix hex numbers with 0x. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: improve the announcement printkRussell King - ARM Linux2011-01-041-7/+4
| | | | | | | | | | | Include the revision number of the PL08x primecell in the boot-time printk to allow proper identification of the peripheral. Reformat the announcement printk format reflect what we do for other primecell drivers - generally "PLXXX revX at 0xNNNNNNNN irq X". Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: add comment explaining the flow control methodsRussell King - ARM Linux2011-01-041-1/+17
| | | | | | | | | | | Explain the two flow control methods which the PL08x implements, along with the problem which peripheral flow control presents. This helps people understand why we are unable to use these DMA controllers with (eg) the MMCI. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix sparse warningsRussell King - ARM Linux2011-01-041-5/+5
| | | | | | | | | | | | drivers/dma/amba-pl08x.c:1895:40: warning: Unknown escape '%' drivers/dma/amba-pl08x.c:1903:40: warning: Unknown escape '%' drivers/dma/amba-pl08x.c:513:6: warning: symbol 'pl08x_choose_master_bus' was not declared. Should it be static? drivers/dma/amba-pl08x.c:604:5: warning: symbol 'pl08x_fill_llis_for_desc' was not declared. Should it be static? drivers/dma/amba-pl08x.c:1442:32: warning: symbol 'pl08x_prep_slave_sg' was not declared. Should it be static? Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix deadlock in terminate_allRussell King - ARM Linux2011-01-041-2/+0
| | | | | | | | | | | | | | | | | | | | | Trying to disable a tasklet while holding a spinlock which the tasklet will take is a recipe for deadlock - tasklet_disable() will wait for the tasklet to finish running, which it will never do. In any case, there is not a corresponding tasklet_enable(), so once the tasklet is disabled, it will never run again until reboot. It's safe to just remove the tasklet_disable() as we remove all current and pending descriptors before releasing this spinlock. This means that the tasklet will find no remaining work if it subsequently runs. The only remaining issue is that the callback for an already submitted txd may be in progress, or even called after terminate_all() returns. There's not much that can be done about that as waiting for the callback to complete before returning will also lead to deadlocks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix missed spin-unlock in pl08x_issue_pending()Russell King - ARM Linux2011-01-041-8/+4
| | | | | | | | | | | | pl08x_issue_pending() returns with the spinlock locked and interrupts disabled if the channel is waiting for a physical DMA to become free. This is wrong - especially as pl08x_issue_pending() is an API function as it leads to deadlocks. Fix it to always return with the spinlock unlocked. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix a leak when preparing TXDsRussell King - ARM Linux2011-01-041-2/+3
| | | | | | | | | | | If we fail to allocate the LLI, the prep_* function will return NULL. However, the TXD we allocated will not be placed on any list, nor will it be freed - we'll just drop all references to it. Make sure we free it rather than leaking TXDs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix locking in taskletRussell King - ARM Linux2011-01-041-2/+3
| | | | | | | | | | | | Tasklets are run from an interruptible context. The slave DMA functions can be called from within IRQ handlers. Taking the spinlock without disabling interrupts allows an interrupt handler to run, which may try to take the spinlock again, resulting in deadlock. Fix this by using the irqsave spinlocks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix atomic_t usage and tx_submit() return value rangeRussell King - ARM Linux2011-01-042-10/+9
| | | | | | | | | | | | | | | | The last_issued variable uses an atomic type, which is only incremented inside a protected region, and then read. Everywhere else only reads the value, so it isn't using atomic_t correctly, and it doesn't even need to. Moreover, the DMA engine code provides us with a variable for this already - chan.cookie. Use chan.cookie instead. Also, avoid negative dma_cookie_t values - negative returns from tx_submit() mean failure, yet in reality we always succeed. Restart from cookie 1, just like other DMA engine drivers do. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix array overflow in dma_set_runtime_config()Russell King - ARM Linux2011-01-041-7/+6
| | | | | | | | | | | | | If maxburst was passed in as zero, we would overflow the burst_sizes[] array. Fix this by checking for this condition, and defaulting to single transfer 'bursts'. Improve the readability of the loop using a for() loop rather than a while() loop with the iterator initialized far from the loop. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* ARM: PL08x: fix spelling errorsRussell King - ARM Linux2011-01-041-20/+17
| | | | | | | | Correct mis-spellings in comments and printk strings. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* Linux 2.6.37-rc4v2.6.37-rc4Linus Torvalds2010-11-291-1/+1
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* Merge branch 'merge' of ↵Linus Torvalds2010-11-291-1/+1
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Use call_rcu_sched() for pagetables
| * powerpc: Use call_rcu_sched() for pagetablesPeter Zijlstra2010-11-301-1/+1
| | | | | | | | | | | | | | | | PowerPC relies on IRQ-disable to guard against RCU quiecent states, use the appropriate RCU call version. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | Revert "debug_locks: set oops_in_progress if we will log messages."Dave Airlie2010-11-291-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e0fdace10e75dac67d906213b780ff1b1a4cc360. On-list discussion seems to suggest that the robustness fixes for printk make this unnecessary and DaveM has also agreed in person at Kernel Summit and on list. The main problem with this code is once we hit a lockdep splat we always keep oops_in_progress set, the console layer uses oops_in_progress with KMS to decide when it should be showing the oops and not showing X, so it causes problems around suspend/resume time when a userspace resume can cause a console switch away from X, only if oops_in_progress is set (which is what we want if an oops actually is in progress, but not because we had a lockdep splat 2 days prior). Cc: David S Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-11-291-0/+24
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: tpm: Autodetect itpm devices
| * | tpm: Autodetect itpm devicesMatthew Garrett2010-11-301-0/+24
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some Lenovos have TPMs that require a quirk to function correctly. This can be autodetected by checking whether the device has a _HID of INTC0102. This is an invalid PNPid, and as such is discarded by the pnp layer - however it's still present in the ACPI code, so we can pull it out that way. This means that the quirk won't be automatically applied on non-ACPI systems, but without ACPI we don't have any way to identify the chip anyway so I don't think that's a great concern. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com> Tested-by: Jiri Kosina <jkosina@suse.cz> Tested-by: Andy Isaacson <adi@hexapodia.org> Signed-off-by: James Morris <jmorris@namei.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2010-11-2930-203/+280
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits) af_unix: limit recursion level pch_gbe driver: The wrong of initializer entry pch_gbe dreiver: chang author ucc_geth: fix ucc halt problem in half duplex mode inet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners ehea: Add some info messages and fix an issue hso: fix disable_net NET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty cxgb4vf: fix setting unicast/multicast addresses ... net, ppp: Report correct error code if unit allocation failed DECnet: don't leak uninitialized stack byte au1000_eth: fix invalid address accessing the MAC enable register dccp: fix error in updating the GAR tcp: restrict net.ipv4.tcp_adv_win_scale (#20312) netns: Don't leak others' openreq-s in proc Net: ceph: Makefile: Remove unnessary code vhost/net: fix rcu check usage econet: fix CVE-2010-3848 econet: fix CVE-2010-3850 econet: disallow NULL remote addr for sendmsg(), fixes CVE-2010-3849 ...
| * | af_unix: limit recursion levelEric Dumazet2010-11-293-6/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Its easy to eat all kernel memory and trigger NMI watchdog, using an exploit program that queues unix sockets on top of others. lkml ref : http://lkml.org/lkml/2010/11/25/8 This mechanism is used in applications, one choice we have is to have a recursion limit. Other limits might be needed as well (if we queue other types of files), since the passfd mechanism is currently limited by socket receive queue sizes only. Add a recursion_level to unix socket, allowing up to 4 levels. Each time we send an unix socket through sendfd mechanism, we copy its recursion level (plus one) to receiver. This recursion level is cleared when socket receive queue is emptied. Reported-by: Марк Коренберг <socketpair@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | pch_gbe driver: The wrong of initializer entryToshiharu Okada2010-11-291-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | The wrong of initializer entry was modified. Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com> Reported-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | pch_gbe dreiver: chang authorToshiharu Okada2010-11-292-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | This driver's AUTHOR was changed to "Toshiharu Okada" from "Masayuki Ohtake". I update the Kconfig, renamed "Topcliff" to "EG20T". Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ucc_geth: fix ucc halt problem in half duplex modeYang Li2010-11-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 58933c64(ucc_geth: Fix the wrong the Rx/Tx FIFO size), the UCC_GETH_UTFTT_INIT is set to 512 based on the recommendation of the QE Reference Manual. But that will sometimes cause tx halt while working in half duplex mode. According to errata draft QE_GENERAL-A003(High Tx Virtual FIFO threshold size can cause UCC to halt), setting UTFTT less than [(UTFS x (M - 8)/M) - 128] will prevent this from happening (M is the minimum buffer size). The patch changes UTFTT back to 256. Signed-off-by: Li Yang <leoli@freescale.com> Cc: Jean-Denis Boyer <jdboyer@media5corp.com> Cc: Andreas Schmitz <Andreas.Schmitz@riedel.net> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | inet: Fix __inet_inherit_port() to correctly increment bsockets and num_ownersNagendra Tomar2010-11-281-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | inet sockets corresponding to passive connections are added to the bind hash using ___inet_inherit_port(). These sockets are later removed from the bind hash using __inet_put_port(). These two functions are not exactly symmetrical. __inet_put_port() decrements hashinfo->bsockets and tb->num_owners, whereas ___inet_inherit_port() does not increment them. This results in both of these going to -ve values. This patch fixes this by calling inet_bind_hash() from ___inet_inherit_port(), which does the right thing. 'bsockets' and 'num_owners' were introduced by commit a9d8f9110d7e953c (inet: Allowing more than 64k connections and heavily optimize bind(0)) Signed-off-by: Nagendra Singh Tomar <tomer_iisc@yahoo.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ehea: Add some info messages and fix an issueBreno Leitao2010-11-281-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds some debug information about ehea not being able to allocate enough spaces. Also it correctly updates the amount of available skb. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | hso: fix disable_netFilip Aben2010-11-281-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The HSO driver incorrectly creates a serial device instead of a net device when disable_net is set. It shouldn't create anything for the network interface. Signed-off-by: Filip Aben <f.aben@option.com> Reported-by: Piotr Isajew <pki@ex.com.pl> Reported-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | NET: wan/x25_asy, move lapb_unregister to x25_asy_close_ttyJiri Slaby2010-11-281-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We register lapb when tty is created, but unregister it only when the device is UP. So move the lapb_unregister to x25_asy_close_tty after the device is down. The old behaviour causes ldisc switching to fail each second attempt, because we noted for us that the device is unused, so we use it the second time, but labp layer still have it registered, so it fails obviously. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reported-by: Sergey Lapin <slapin@ossfans.org> Cc: Andrew Hendry <andrew.hendry@gmail.com> Tested-by: Sergey Lapin <slapin@ossfans.org> Tested-by: Mikhail Ulyanov <ulyanov.mikhail@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | cxgb4vf: fix setting unicast/multicast addresses ...Casey Leedom2010-11-282-63/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | We were truncating the number of unicast and multicast MAC addresses supported. Additionally, we were incorrectly computing the MAC Address hash (a "1 << N" where we needed a "1ULL << N"). Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net, ppp: Report correct error code if unit allocation failedCyrill Gorcunov2010-11-281-21/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocating unit from ird might return several error codes not only -EAGAIN, so it should not be changed and returned precisely. Same time unit release procedure should be invoked only if device is unregistering. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> CC: Paul Mackerras <paulus@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | DECnet: don't leak uninitialized stack byteDan Rosenberg2010-11-281-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | A single uninitialized padding byte is leaked to userspace. Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> CC: stable <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | au1000_eth: fix invalid address accessing the MAC enable registerWolfgang Grandegger2010-11-281-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "aup->enable" holds already the address pointing to the MAC enable register. The bug was introduced by commit d0e7cb: "au1000-eth: remove volatiles, switch to I/O accessors". CC: Florian Fainelli <florian@openwrt.org> Signed-off-by: Wolfgang Grandegger <wg@denx.de> Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | dccp: fix error in updating the GARGerrit Renker2010-11-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a bug in updating the Greatest Acknowledgment number Received (GAR): the current implementation does not track the greatest received value - lower values in the range AWL..AWH (RFC 4340, 7.5.1) erase higher ones. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'vhost-net' of ↵David S. Miller2010-11-281-2/+3
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
| | * | vhost/net: fix rcu check usageMichael S. Tsirkin2010-11-251-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Incorrect rcu check was used as rcu isn't done under mutex here. Force check to 1 for now, to stop it from complaining. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | | tcp: restrict net.ipv4.tcp_adv_win_scale (#20312)Alexey Dobriyan2010-11-282-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tcp_win_from_space() does the following: if (sysctl_tcp_adv_win_scale <= 0) return space >> (-sysctl_tcp_adv_win_scale); else return space - (space >> sysctl_tcp_adv_win_scale); "space" is int. As per C99 6.5.7 (3) shifting int for 32 or more bits is undefined behaviour. Indeed, if sysctl_tcp_adv_win_scale is exactly 32, space >> 32 equals space and function returns 0. Which means we busyloop in tcp_fixup_rcvbuf(). Restrict net.ipv4.tcp_adv_win_scale to [-31, 31]. Fix https://bugzilla.kernel.org/show_bug.cgi?id=20312 Steps to reproduce: echo 32 >/proc/sys/net/ipv4/tcp_adv_win_scale wget www.kernel.org [softlockup] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | netns: Don't leak others' openreq-s in procPavel Emelyanov2010-11-271-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The /proc/net/tcp leaks openreq sockets from other namespaces. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Net: ceph: Makefile: Remove unnessary codeTracey Dent2010-11-271-22/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | Remove the if and else conditional because the code is in mainline and there is no need in it being there. Signed-off-by: Tracey Dent <tdent48227@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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