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2013-05-23drm/exynos: use drm_send_vblank_event() helperRob Clark
Rebased. Signed-off-by: Rob Clark <rob@ti.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-05-23netfilter: add nf_ipv6_ops hook to fix xt_addrtype with IPv6Florian Westphal
Quoting https://bugzilla.netfilter.org/show_bug.cgi?id=812: [ ip6tables -m addrtype ] When I tried to use in the nat/PREROUTING it messes up the routing cache even if the rule didn't matched at all. [..] If I remove the --limit-iface-in from the non-working scenario, so just use the -m addrtype --dst-type LOCAL it works! This happens when LOCAL type matching is requested with --limit-iface-in, and the default ipv6 route is via the interface the packet we test arrived on. Because xt_addrtype uses ip6_route_output, the ipv6 routing implementation creates an unwanted cached entry, and the packet won't make it to the real/expected destination. Silently ignoring --limit-iface-in makes the routing work but it breaks rule matching (--dst-type LOCAL with limit-iface-in is supposed to only match if the dst address is configured on the incoming interface; without --limit-iface-in it will match if the address is reachable via lo). The test should call ipv6_chk_addr() instead. However, this would add a link-time dependency on ipv6. There are two possible solutions: 1) Revert the commit that moved ipt_addrtype to xt_addrtype, and put ipv6 specific code into ip6t_addrtype. 2) add new "nf_ipv6_ops" struct to register pointers to ipv6 functions. While the former might seem preferable, Pablo pointed out that there are more xt modules with link-time dependeny issues regarding ipv6, so lets go for 2). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-23OMAPDSS: Fix crash with DT bootTomi Valkeinen
When booting with DT, there's a crash when omapfb is probed. This is caused by the fact that omapdss+DT is not yet supported, and thus omapdss is not probed at all. On the other hand, omapfb is always probed. When omapfb tries to use omapdss, there's a NULL pointer dereference crash. The same error should most likely happen with omapdrm and omap_vout also. To fix this, add an "initialized" state to omapdss. When omapdss has been probed, it's marked as initialized. omapfb, omapdrm and omap_vout check this state when they are probed to see that omapdss is actually there. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
2013-05-23bridge: netfilter: using strlcpy() instead of strncpy()Chen Gang
'name' has already set all zero when it is defined, so not need let strncpy() to pad it again. 'name' is a string, better always let is NUL terminated, so use strlcpy() instead of strncpy(). Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Bart De Schuymer <bdschuym@pandora.be> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-23netfilter: xt_socket: use IP early demuxEric Dumazet
With IP early demux added in linux-3.6, we perform TCP lookup in IP layer before iptables hooks. We can avoid doing a second lookup in xt_socket. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-23netfilter: xt_CT: optimize XT_CT_NOTRACKEric Dumazet
The percpu untracked ct are not currently used for XT_CT_NOTRACK. xt_ct_tg_check()/xt_ct_target() provides a single ct. Thats not optimal as the ct->ct_general.use cache line will bounce among cpus. Use the intended [1] thing : xt_ct_target() should select the percpu object. [1] Refs : commit 5bfddbd46a95c97 ("netfilter: nf_conntrack: IPS_UNTRACKED bit") commit b3c5163fe0193a7 ("netfilter: nf_conntrack: per_cpu untracking") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-23ARC: Use enough bits for determining page's cache colorVineet Gupta
The current code uses 2 bits for determining page's dcache color, thus sorting pages into 4 bins, whereas the aliasing dcache really has 2 bins (8k page, 64k dcache - 4 way-set-assoc). This can cause extraneous flushes - e.g. color 0 and 2. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-23ARC: Brown paper bag bug in macro for checking cache colorVineet Gupta
The VM_EXEC check in update_mmu_cache() was getting optimized away because of a stupid error in definition of macro addr_not_cache_congruent() The intention was to have the equivalent of following: if (a || (1 ? b : 0)) but we ended up with following: if (a || 1 ? b : 0) And because precedence of '||' is more that that of '?', gcc was optimizing away evaluation of <a> Nasty Repercussions: 1. For non-aliasing configs it would mean some extraneous dcache flushes for non-code pages if U/K mappings were not congruent. 2. For aliasing config, some needed dcache flush for code pages might be missed if U/K mappings were congruent. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-23Merge branch 'pm-cpufreq'Rafael J. Wysocki
* pm-cpufreq: cpufreq: arm_big_little_dt: Instantiate as platform_driver cpufreq: arm_big_little_dt: Register driver only if DT has valid data cpufreq / e_powersaver: Fix linker error when ACPI processor is a module cpufreq / intel_pstate: Add additional supported CPU ID cpufreq: Drop rwsem lock around CPUFREQ_GOV_POLICY_EXIT
2013-05-23Merge branch 'acpi-fixes'Rafael J. Wysocki
* acpi-fixes: ACPI / video: Add "Asus UL30A" to ACPI video detect blacklist ACPI / PM: Allow device power states to be used for CONFIG_PM unset
2013-05-23xfrm: properly handle invalid states as an errorTimo Teräs
The error exit path needs err explicitly set. Otherwise it returns success and the only caller, xfrm_output_resume(), would oops in skb_dst(skb)->ops derefence as skb_dst(skb) is NULL. Bug introduced in commit bb65a9cb (xfrm: removes a superfluous check and add a statistic). Signed-off-by: Timo Teräs <timo.teras@iki.fi> Cc: Li RongQing <roy.qing.li@gmail.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23MIPS: Quit exposing Kconfig symbols in uapi headers.David Daney
The kernel's struct pt_regs has many fields conditional on various Kconfig variables, we cannot be exporting this garbage to user-space. Move the kernel's definition to asm/ptrace.h, and put a uapi only version in uapi/asm/ptrace.h gated by #ifndef __KERNEL__ Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5305/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-23MIPS: Remove duplicate definition of check_for_high_segbits.David Daney
In C, one definition is sufficient. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5304/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-23ipv6: use ipv6_addr_scope() helperCong Wang
ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK could be replaced by ipv6_addr_scope(), which is slightly faster. Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> 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>
2013-05-23ipv6: use ipv6_addr_any() helperCong Wang
ipv6_addr_any() is a faster way to determine if an addr is ipv6 any addr, no need to compute the addr type. Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23kbuild: Don't assume dts files live in arch/*/boot/dtsMatthijs Kooijman
In commit b40b25ff (kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp), dts building was changed to always use the C preprocessor. This meant that the .dts file passed to dtc is not the original, but the preprocessed one. When compiling with a separate build directory (i.e., with O=), this preprocessed file will not live in the same directory as the original. When the .dts file includes .dtsi files, dtc will look for them in the build directory, not in the source directory and compilation will fail. The commit referenced above tried to fix this by passing arch/*/boot/dts as an include path to dtc. However, for mips, the .dts files are not in this directory, so dts compilation on mips breaks for some targets. Instead of hardcoding this particular include path, this commit just uses the directory of the .dts file that is being compiled, which effectively restores the previous behaviour wrt includes. For most .dts files, this path is just the same as the previous hardcoded arch/*/boot/dts path. This was tested on a mips (rt3052) and an arm (bcm2835) target. Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-05-23virtio_net: enable napi for all possible queues during openJason Wang
Commit 55257d72bd1c51f25106350f4983ec19f62ed1fa (virtio-net: fill only rx queues which are being used) only does the napi enabling during open for curr_queue_pairs. This will break multiqueue receiving since napi of new queues were still disabled after changing the number of queues. This patch fixes this by enabling napi for all possible queues during open. Cc: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23tcp: bug fix in proportional rate reduction.Nandita Dukkipati
This patch is a fix for a bug triggering newly_acked_sacked < 0 in tcp_ack(.). The bug is triggered by sacked_out decreasing relative to prior_sacked, but packets_out remaining the same as pior_packets. This is because the snapshot of prior_packets is taken after tcp_sacktag_write_queue() while prior_sacked is captured before tcp_sacktag_write_queue(). The problem is: tcp_sacktag_write_queue (tcp_match_skb_to_sack() -> tcp_fragment) adjusts the pcount for packets_out and sacked_out (MSS change or other reason). As a result, this delta in pcount is reflected in (prior_sacked - sacked_out) but not in (prior_packets - packets_out). This patch does the following: 1) initializes prior_packets at the start of tcp_ack() so as to capture the delta in packets_out created by tcp_fragment. 2) introduces a new "previous_packets_out" variable that snapshots packets_out right before tcp_clean_rtx_queue, so pkts_acked can be correctly computed as before. 3) Computes pkts_acked using previous_packets_out, and computes newly_acked_sacked using prior_packets. Signed-off-by: Nandita Dukkipati <nanditad@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included change: - fix double free in case of failure during mesh initialisation Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23sch_tbf: segment too big GSO packetsEric Dumazet
If a GSO packet has a length above tbf burst limit, the packet is currently silently dropped. Current way to handle this is to set the device in non GSO/TSO mode, or setting high bursts, and its sub optimal. We can actually segment too big GSO packets, and send individual segments as tbf parameters allow, allowing for better interoperability. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Jiri Pirko <jiri@resnulli.us> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23fec: Use DIV_ROUND_UP macroFabio Estevam
Use the standard DIV_ROUND_UP macro in order to provide better readability. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23cxgb3: Check and handle the dma mapping errorsSantosh Rastapur
This patch adds checks at approprate places whether *dma_map*() call has succeeded or not. Signed-off-by: Santosh Rastapur <santosh@chelsio.com> Reviewed-by: Jay Fenlason <fenlason@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23cxgb3: Fix warning about using rcu_dereference when not in a rcu-locked sectionJay Fenlason
It is about using rcu_dereference() when not in a rcu-locked section. It only happens on initialization hence fix the initialization to not rcu_dereference() Signed-off-by: Jay Fenlason <fenlason@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22net: smsc911x: don't artificially limit buildMark Rutland
Currently the SMSC911X driver may only be built for a specific set of architectures, being limited to do so by a Kconfig depends line. This means that if a platform wishes to use the driver, its architecture must be added to the list explicitly, introducing pointless churn. This may have been due to the driver's use of the {read,write}s{b,w,l} functions, which have since been replaced with the more standard io{read,write}{8,16,32}_rep. We can instead depend on HAS_IOMEM, which should prevent build issues while allowing the driver to be built for currently unlisted architectures, including x86 and arm64. This patch removes the explicit list of architectures from the driver's depend line, and replaces it with a dependency on HAS_IOMEM. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23microblaze: Use proper casting for inb/inw/inl in io.hMichal Simek
We are going to move to asm-generic/io.h but let's fix compilation warnings first for 3.10. Warning message: arch/microblaze/include/asm/io.h:126:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define inb(port) readb((u8 *)((port))) ... Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2013-05-22net: ethernet: sun: drop unused variableEmilio López
Commit bfd428d ("net: ethernet: sun: initialize variables directly") dropped the only loop that was using i but did not remove the actual variable, therefore causing a warning when building. This patch drops the now redundant line. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Emilio López <emilio@elopez.com.ar> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22net: ethernet: korina: drop unused variableEmilio López
Commit e998fd4 ("net: ethernet: korina: initialize variables directly") dropped the only loop that was using i but did not remove the actual variable, therefore causing a warning when building. This patch drops the now redundant line. Signed-off-by: Emilio López <emilio@elopez.com.ar> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22net: ethernet: apple: drop unused variableEmilio López
Commit 3b0aaef ("net: ethernet: apple: initialize variables directly") dropped the only loop that was using i but did not remove the actual variable, therefore causing a warning when building. This patch drops the now redundant line. Signed-off-by: Emilio López <emilio@elopez.com.ar> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-23ARC: copy_(to|from)_user() to honor usermode-access permissionsVineet Gupta
This manifested as grep failing psuedo-randomly: -------------->8--------------------- [ARCLinux]$ ip address show lo | grep inet [ARCLinux]$ ip address show lo | grep inet [ARCLinux]$ ip address show lo | grep inet [ARCLinux]$ [ARCLinux]$ ip address show lo | grep inet inet 127.0.0.1/8 scope host lo -------------->8--------------------- ARC700 MMU provides fully orthogonal permission bits per page: Ur, Uw, Ux, Kr, Kw, Kx The user mode page permission templates used to have all Kernel mode access bits enabled. This caused a tricky race condition observed with uClibc buffered file read and UNIX pipes. 1. Read access to an anon mapped page in libc .bss: write-protected zero_page mapped: TLB Entry installed with Ur + K[rwx] 2. grep calls libc:getc() -> buffered read layer calls read(2) with the internal read buffer in same .bss page. The read() call is on STDIN which has been redirected to a pipe. read(2) => sys_read() => pipe_read() => copy_to_user() 3. Since page has Kernel-write permission (despite being user-mode write-protected), copy_to_user() suceeds w/o taking a MMU TLB-Miss Exception (page-fault for ARC). core-MM is unaware that kernel erroneously wrote to the reserved read-only zero-page (BUG #1) 4. Control returns to userspace which now does a write to same .bss page Since Linux MM is not aware that page has been modified by kernel, it simply reassigns a new writable zero-init page to mapping, loosing the prior write by kernel - effectively zero'ing out the libc read buffer under the hood - hence grep doesn't see right data (BUG #2) The fix is to make all kernel-mode access permissions mirror the user-mode ones. Note that the kernel still has full access to pages, when accessed directly (w/o MMU) - this fix ensures that kernel-mode access in copy_to_from() path uses the same faulting access model as for pure user accesses to keep MM fully aware of page state. The issue is peudo-random because it only shows up if the TLB entry installed in #1 is present at the time of #3. If it is evicted out, due to TLB pressure or some-such, then copy_to_user() does take a TLB Miss Exception, with a routine write-to-anon COW processing installing a fresh page for kernel writes and also usable as it is in userspace. Further the issue was dormant for so long as it depends on where the libc internal read buffer (in .bss) is mapped at runtime. If it happens to reside in file-backed data mapping of libc (in the page-aligned slack space trailing the file backed data), loader zero padding the slack space, does the early cow page replacement, setting things up at the very beginning itself. With gcc 4.8 based builds, the libc buffer got pushed out to a real anon mapping which triggers the issue. Reported-by: Anton Kolesov <akolesov@synopsys.com> Cc: <stable@vger.kernel.org> # 3.9 Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-23ARC: [mm] Prevent stray dcache lines after__sync_icache_dcach()Vineet Gupta
Flush and INVALIDATE the dcache page. This helper is only used for writeback of CODE pages to memory. So there's no value in keeping the dcache lines around. Infact it is risky as a writeback on natural eviction under pressure can cause un-needed writeback with weird issues on aliasing dcache configurations. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-23ARM i.MX6q: fix for ldb_di_selsJiada Wang
As pll5_video_div has been introduced to represent the clock generated from post-divider for video. Instead of pll5_video, pll5_video_div should be proper root clock for ldb_di_sel. Signed-off-by: Jiada Wang <jiada_wang@mentor.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-05-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32 Pull AVR32 update from Hans-Christian Egtvedt: "wow, it has gone 10 releases since my last request :(" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32: avr32: fix building warnings caused by redefinitions of HZ avr32: fix relocation check for signed 18-bit offset avr32: move NODES_SHIFT into Kconfig and delete numnodes.h
2013-05-22Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS update from Ralf Baechle: - Fix a build error if <linux/printk.h> is included without <linux/linkage.h> having been included before. - Cleanup and fix the damage done by the generic idle loop patch. - A kprobes fix that brings the MIPS code in line with what other architectures are for quite a while already. - Wire up the native getdents64(2) syscall for 64 bit - for some reason it was only for the compat ABIs. This has been reported to cause an application issue. This turned out bigger than I meant but the wait instruction support code was driving me nuts. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: N64: Wire getdents64(2) kprobes/mips: Fix to check double free of insn slot MIPS: Idle: Break r4k_wait into two functions and fix it. MIPS: Idle: Do address fiddlery in helper functions. MIPS: Idle: Consolidate all declarations in <asm/idle.h>. MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations. MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait. MIPS: Idle: Make call of function pointer readable. MIPS: Idle: Consistently reformat inline assembler. MIPS: Idle: cleaup SMTC idle hook as per Linux coding style. MIPS: Consolidate idle loop / WAIT instruction support in a single file. MIPS: clock.h: Remove declaration of cpu_wait. Add include dependencies to <linux/printk.h>. MIPS: Rewrite pfn_valid to work in modules, too.
2013-05-23ACPI / video: Add "Asus UL30A" to ACPI video detect blacklistBastian Triller
Like on UL30VT, the ACPI video driver can't control backlight correctly on Asus UL30A. Vendor driver (asus-laptop) can work. This patch is to add "Asus UL30A" to ACPI video detect blacklist in order to use asus-laptop for video control on the "Asus UL30A" rather than ACPI video driver. Signed-off-by: Bastian Triller <bastian.triller@gmail.com> Cc: All <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-22staging: dwc2: remove compile warning for USB_DWC2_TRACK_MISSED_SOFSPaul Zimmerman
Remove the compile-time warning for this config option, and instead warn that it is experimental in the Kconfig text Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-22qmi_wwan: Added support for Cinterion's PLxx WWAN InterfaceHans-Christoph Schemmel
Added support for Cinterion's PLxx WWAN Interface by adding QMI_FIXED_INTF with Cinterion's Vendor ID as well as Product ID and WWAN Interface Number. Signed-off-by: Hans-Christoph Schemmel <hans-christoph.schemmel@gemalto.com> Signed-off-by: Christian Schmiedl <christian.schmiedl@gemalto.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22Merge tag 'iio-fixes-for-3.10a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First round of IIO fixes for the 3.10 cycle. The usual mixed bag of little fixes. 1) A fix for mxs-lradc having missed out on some global abi changes that and hence being unable to start up buffered output. 2) Clean up error handling in tsl2x7x 3) A build fix for some of the dac drivers when they have spi master support built in, but i2c support build as a module. 4) Add a missing disable after a oneshot capture to the st sensor core. 5) Exynos adc driver took a novel an incorrect route to get at its private data store.
2013-05-22Merge branch 'perf_net_dropmonitor'David S. Miller
Ben Hutchings says: ==================== Somewhat surprisingly, the net_dropmonitor reporting script doesn't work at all. This series fixes it and then makes it slightly more efficient. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Neil Horman <nhorman@tuxdriver.com>
2013-05-22perf: net_dropmonitor: Remove progress indicatorBen Hutchings
We can read /proc/kallsyms in a fraction of a second, so why waste a further fraction of a second showing progress? Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22perf: net_dropmonitor: Use bisection in symbol lookupBen Hutchings
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22perf: net_dropmonitor: Do not assume ordering of dictionariesBen Hutchings
The sort order of dictionaries in Python is undocumented. Use tuples instead, which are documented to be lexically ordered. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22perf: net_dropmonitor: Fix symbol-relative addressesBen Hutchings
The comparison between traced and symbol addresses is backwards: if the traced address doesn't exactly match a symbol (which we don't expect it to), we'll show the next symbol and the offset to it, whereas we should show the previous symbol and the offset from it. Cc: stable@vger.kernel.org Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22perf: net_dropmonitor: Fix trace parameter orderBen Hutchings
This works much better if we don't treat protocol numbers as addresses. Cc: stable@vger.kernel.org Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22net: Loosen constraints for recalculating checksum in skb_segment()Simon Horman
This is a generic solution to resolve a specific problem that I have observed. If the encapsulation of an skb changes then ability to offload checksums may also change. In particular it may be necessary to perform checksumming in software. An example of such a case is where a non-GRE packet is received but is to be encapsulated and transmitted as GRE. Another example relates to my proposed support for for packets that are non-MPLS when received but MPLS when transmitted. The cost of this change is that the value of the csum variable may be checked when it previously was not. In the case where the csum variable is true this is pure overhead. In the case where the csum variable is false it leads to software checksumming, which I believe also leads to correct checksums in transmitted packets for the cases described above. Further analysis: This patch relies on the return value of can_checksum_protocol() being correct and in turn the return value of skb_network_protocol(), used to provide the protocol parameter of can_checksum_protocol(), being correct. It also relies on the features passed to skb_segment() and in turn to can_checksum_protocol() being correct. I believe that this problem has not been observed for VLANs because it appears that almost all drivers, the exception being xgbe, set vlan_features such that that the checksum offload support for VLAN packets is greater than or equal to that of non-VLAN packets. I wonder if the code in xgbe may be an oversight and the hardware does support checksumming of VLAN packets. If so it may be worth updating the vlan_features of the driver as this patch will force such checksums to be performed in software rather than hardware. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22net: fec: use a more proper compatible string for MVF type deviceShawn Guo
MVF is a family while MVF600 is a particular SoC in the family. We generally prefer to use SoC rather than family name in compatible string to define a particular type of fec device. And this is how fec_dt_ids works for all those IMX fec variants. Let's change mvf to mvf600 to have it work in the same way. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22bridge: send query as soon as leave is receivedCong Wang
Continue sending queries when leave is received if the user marks it as a querier. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Cong Wang <amwang@redhat.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22bridge: only expire the mdb entry when query is receivedCong Wang
Currently we arm the expire timer when the mdb entry is added, however, this causes problem when there is no querier sent out after that. So we should only arm the timer when a corresponding query is received, as suggested by Herbert. And he also mentioned "if there is no querier then group subscriptions shouldn't expire. There has to be at least one querier in the network for this thing to work. Otherwise it just degenerates into a non-snooping switch, which is OK." Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Cong Wang <amwang@redhat.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22bridge: use the bridge IP addr as source addr for querierCong Wang
Quote from Adam: "If it is believed that the use of 0.0.0.0 as the IP address is what is causing strange behaviour on other devices then is there a good reason that a bridge rather than a router shouldn't be the active querier? If not then using the bridge IP address and having the querier enabled by default may be a reasonable solution (provided that our querier obeys the election rules and shuts up if it sees a query from a lower IP address that isn't 0.0.0.0). Just because a device is the elected querier for IGMP doesn't appear to mean it is required to perform any other routing functions." And introduce a new troggle for it, as suggested by Herbert. Suggested-by: Adam Baker <linux@baker-net.org.uk> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Cong Wang <amwang@redhat.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22qlcnic: Fix updating netdev->featuresShahed Shaikh
o After change in EPORT features of 82xx adapter, netdev->features needs to be updated to reflect EPORT feature updates but driver was manipulating netdev->features at wrong place. o This patch uses netdev_update_features() and .ndo_fix_features() to update netdev->features properly. Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-22qlcnic: remove netdev->trans_start updates within the driverSony Chacko
Code is removed because netdev->trans_start updates made by the driver will be ignored by the kernel. Signed-off-by: Sony Chacko <sony.chacko@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>