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2015-06-24EDAC, mce_amd_inj: Move bit preparations before the injectionBorislav Petkov
We do get_online_cpus() and then start noodling with the bits. Do that *before* we grab the hotplug lock. Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, mce_amd_inj: Cleanup and simplify READMEBorislav Petkov
Save us an indentation level, widen to 80 cols, make the text more succinct and slender. Use i as the bank variable, same as what the documentation uses. Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, altera: Do not allow suspend when EDAC is enabledAlan Tull
Suspend-to-RAM and EDAC support are mutually exclusive on SOCFPGA. If EDAC is enabled, it will prevent the platform from going into suspend. The reason is that the IRQ vectors for OCRAM reside on DDR and in Suspend-to-RAM mode we're executing out of OCRAM. If an ECC error occurs, we can't handle it so it was decided to make them mutually exclusive. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: dinh.linux@gmail.com Cc: dougthompson@xmission.com Cc: linux-edac <linux-edac@vger.kernel.org> Cc: mchehab@osg.samsung.com Cc: tthayer@opensource.altera.com Link: http://lkml.kernel.org/r/1433512155-9906-1-git-send-email-dinguyen@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, mce_amd_inj: Make inj_type statickbuild test robot
It is used there only anyway. Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> Cc: kbuild-all@01.org Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/20150605112426.GA97073@lkp-sb04 Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24arm: socfpga: dts: Add Arria10 SDRAM EDAC DTS supportThor Thayer
Add support for the Arria10 SDRAM EDAC. Update the bindings document for the new match string. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dinguyen@opensource.altera.com Cc: galak@codeaurora.org Cc: grant.likely@linaro.org Cc: ijc+devicetree@hellion.org.uk Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: m.chehab@samsung.com Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: tthayer.linux@gmail.com Link: http://lkml.kernel.org/r/1433428128-7292-5-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, altera: Add Arria10 EDAC supportThor Thayer
The Arria10 SDRAM and ECC system differs significantly from the Cyclone5 and Arria5 SoCs. This patch adds support for the Arria10 SoC. 1) IRQ handler needs to support SHARED IRQ 2) Support sberr and dberr address reporting. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dinguyen@opensource.altera.com Cc: galak@codeaurora.org Cc: grant.likely@linaro.org Cc: ijc+devicetree@hellion.org.uk Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: m.chehab@samsung.com Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: tthayer.linux@gmail.com Link: http://lkml.kernel.org/r/1433428128-7292-4-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, altera: Refactor for Altera CycloneV SoCThor Thayer
The Arria10 SoC uses a completely different SDRAM controller from the earlier CycloneV and ArriaV SoCs. This patch abstracts the SDRAM bits for the CycloneV/ArriaV SoCs in preparation for the Arria10 support. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dinguyen@opensource.altera.com Cc: galak@codeaurora.org Cc: grant.likely@linaro.org Cc: ijc+devicetree@hellion.org.uk Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: m.chehab@samsung.com Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: tthayer.linux@gmail.com Link: http://lkml.kernel.org/r/1433428128-7292-3-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, altera: Generalize driver to use DT Memory sizeThor Thayer
The Arria10 SOC uses a completely different SDRAM controller from the earlier CycloneV and ArriaV SoCs. The memory size is calculated in the bootloader and passed via the device tree. Using this device tree size is more generic than using the register fields to calculate the memory size for different SDRAM controllers. Signed-off-by: Thor Thayer <tthayer@opensource.altera.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree@vger.kernel.org Cc: dinguyen@opensource.altera.com Cc: galak@codeaurora.org Cc: grant.likely@linaro.org Cc: ijc+devicetree@hellion.org.uk Cc: linux-arm-kernel@lists.infradead.org Cc: linux-edac <linux-edac@vger.kernel.org> Cc: m.chehab@samsung.com Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: tthayer.linux@gmail.com Link: http://lkml.kernel.org/r/1433428128-7292-2-git-send-email-tthayer@opensource.altera.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24EDAC, mce_amd_inj: Add README fileAravind Gopalakrishnan
Provide information about each injection file and its usage for ease of use and in-band documentation. This is a good idea adapted from ftrace. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: mchehab@osg.samsung.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/1433277362-10911-7-git-send-email-Aravind.Gopalakrishnan@amd.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24Merge tag 'powerpc-4.2-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc updates from Michael Ellerman: - disable the 32-bit vdso when building LE, so we can build with a 64-bit only toolchain. - EEH fixes from Gavin & Richard. - enable the sys_kcmp syscall from Laurent. - sysfs control for fastsleep workaround from Shreyas. - expose OPAL events as an irq chip by Alistair. - MSI ops moved to pci_controller_ops by Daniel. - fix for kernel to userspace backtraces for perf from Anton. - merge pseries and pseries_le defconfigs from Cyril. - CXL in-kernel API from Mikey. - OPAL prd driver from Jeremy. - fix for DSCR handling & tests from Anshuman. - Powernv flash mtd driver from Cyril. - dynamic DMA Window support on powernv from Alexey. - LLVM clang fixes & workarounds from Anton. - reworked version of the patch to abort syscalls when transactional. - fix the swap encoding to support 4TB, from Aneesh. - various fixes as usual. - Freescale updates from Scott: Highlights include more 8xx optimizations, an e6500 hugetlb optimization, QMan device tree nodes, t1024/t1023 support, and various fixes and cleanup. * tag 'powerpc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (180 commits) cxl: Fix typo in debug print cxl: Add CXL_KERNEL_API config option powerpc/powernv: Fix wrong IOMMU table in pnv_ioda_setup_bus_dma() powerpc/mm: Change the swap encoding in pte. powerpc/mm: PTE_RPN_MAX is not used, remove the same powerpc/tm: Abort syscalls in active transactions powerpc/iommu/ioda2: Enable compile with IOV=on and IOMMU_API=off powerpc/include: Add opal-prd to installed uapi headers powerpc/powernv: fix construction of opal PRD messages powerpc/powernv: Increase opal-irqchip initcall priority powerpc: Make doorbell check preemption safe powerpc/powernv: pnv_init_idle_states() should only run on powernv macintosh/nvram: Remove as unused powerpc: Don't use gcc specific options on clang powerpc: Don't use -mno-strict-align on clang powerpc: Only use -mtraceback=no, -mno-string and -msoft-float if toolchain supports it powerpc: Only use -mabi=altivec if toolchain supports it powerpc: Fix duplicate const clang warning in user access code vfio: powerpc/spapr: Support Dynamic DMA windows vfio: powerpc/spapr: Register memory and define IOMMU v2 ...
2015-06-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "Pretty boring for a merge window pull. One change in behaviour is the patch for dasd driver, the module which provides the diagnose discipline is now loaded automatically. The SCLP code got a nice cleanup, a new global structure replaces a bunch of accessor functions. And a couple of random, small improvements" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: improve handling of hotplug event 0x301 s390/setup: fix DMA_API_DEBUG warnings s390/zcrypt: remove obsolete __constant s390/keyboard: avoid off-by-one when using strnlen_user() s390/sclp: pass timeout as HZ independent value s390/mm: s/specifiation/specification/, s/an specification/a specification/ s390/sclp: Use DECLARE_BITMAP s390/dasd: Enable automatic loading of dasd_diag_mod s390/sclp: move sclp_facilities into "struct sclp" s390/sclp: get rid of sclp_get_mtid() and sclp_get_mtid_max() s390/sclp: unify basic sclp access by exposing "struct sclp" s390/sclp: prepare smp_fill_possible_mask for global "struct sclp"
2015-06-24Merge tag 'microblaze-4.2-rc1' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
Pull Microblaze updates from Michal Simek: - some PCI fixups - add new MB versions - sparse fixups * tag 'microblaze-4.2-rc1' of git://git.monstr.eu/linux-2.6-microblaze: microblaze/PCI: Remove unnecessary struct pci_dev declaration microblaze/PCI: Remove unnecessary pci_bus_find_capability() declaration microblaze/PCI: Remove unused declarations microblaze: Label local function static microblaze: Add missing release version code
2015-06-24pnfs/flexfiles: report layoutstat regularlyPeng Tao
As a simple scheme, report every minute if IO is still going on. Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24nfs42: serialize LAYOUTSTATS calls of the same filePeng Tao
There is no need to report concurrently. Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pnfs/flexfiles: encode LAYOUTSTATS flexfiles specific dataPeng Tao
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pnfs/flexfiles: add ff_layout_prepare_layoutstatsPeng Tao
It fills in the generic part of LAYOUTSTATS call. One thing to note is that we don't really track if IO is continuous or not. So just fake to use the completed bytes for it. Still missing flexfiles specific part, which will be included in the next patch. Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pNFS/flexfiles: track when layout is first usedPeng Tao
So that we can report cumulative time since the beginning of statistics collection of the layout. Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pNFS/flexfiles: add layoutstats trackingTrond Myklebust
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24mtip32xx: Fix accessing freed memorySelvan Mani
In mtip_pci_remove(), driver data 'dd' is accessed after freeing it. This is a residue of SRSI code cleanup in the patch 016a41c38821 "mtip32xx: fix crash on surprise removal of the drive". Removed the bit flags MTIP_DDF_REMOVE_DONE_BIT and MTIP_PF_SR_CLEANUP_BIT. Reported-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Vignesh Gunasekaran <vgunasekaran@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-06-24pNFS/flexfiles: Remove unused struct members user_name, group_nameTrond Myklebust
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pnfs: add pnfs_report_layoutstat helper functionPeng Tao
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24pNFS: fill in nfs42_layoutstat_opsPeng Tao
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24NFSv.2/pnfs Add a LAYOUTSTATS rpc functionTrond Myklebust
Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-24EDAC, mce_amd_inj: Add individual permissions field to dfs_nodeAravind Gopalakrishnan
Add per-file permissions to the dfs_fls[] array. In a later patch, we will add a README file that needs different permissions. Hence the move here to add a perm field. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: mchehab@osg.samsung.com Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/1433277362-10911-6-git-send-email-Aravind.Gopalakrishnan@amd.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-06-24MIPS: spinlock: Adjust arch_spin_lock back-off timeMarkos Chandras
Make it similar to the trylock and R10000_LLSC_WAR cases. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9789/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-24MIPS: asmmacro: Ensure 64-bit FP registers are used with MSAMarkos Chandras
This silences warnings like the following one when building with the latest binutils: arch/mips/kernel/genex.S: Assembler messages: arch/mips/kernel/genex.S:438: Warning: the `msa' extension requires 64-bit FPRs [ralf@linux-mips.org: Markos says binutils 2.25 and some 2.24 snapshots are affected.] Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9745/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-24bridge: vlan: flush the dynamically learned entries on port vlan deleteNikolay Aleksandrov
Add a new argument to br_fdb_delete_by_port which allows to specify a vid to match when flushing entries and use it in nbp_vlan_delete() to flush the dynamically learned entries of the vlan/port pair when removing a vlan from a port. Before this patch only the local mac was being removed and the dynamically learned ones were left to expire. Note that the do_all argument is still respected and if specified, the vid will be ignored. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24bridge: multicast: add a comment to br_port_state_selection about blocking stateNikolay Aleksandrov
Add a comment to explain why we're not disabling port's multicast when it goes in blocking state. Since there's a check in the timer's function which bypasses the timer if the port's in blocking/disabled state, the timer will simply expire and stop without sending more queries. Suggested-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24[media] lmedm04: fix the range for relative measurementsMauro Carvalho Chehab
Relative measurements are typically between 0 and 0xffff. However, for some tuners (TUNER_S7395 and TUNER_S0194), the range were from 0 to 0xff00, with means that 100% is never archived. Also, TUNER_RS2000 uses a more complex math. So, create a macro that does the conversion using bit operations and use it for all conversions. The code is also easier to read with is a bonus. While here, remove a bogus comment. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-24[media] lmedm04: use u32 instead of u64 for relative statsMauro Carvalho Chehab
Cleanup this sparse warning: drivers/media/usb/dvb-usb-v2/lmedm04.c:302 lme2510_update_stats() warn: should '((255 - st->signal_sn - 161) * 3) << 8' be a 64 bit type? Both c_tmp and s_tmp actually stores a u16 stat. Using a u64 data there is a waste, specially on u32 archs, as 64 ints there are more expensive. So, change the types to u32 and do the typecast only when storing the result. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-24[media] omap3isp: remove unused varMauro Carvalho Chehab
drivers/media/platform/omap3isp/isppreview.c:932:6: warning: variable ‘features’ set but not used [-Wunused-but-set-variable] Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-24[media] saa7134: fix page size on some archsMauro Carvalho Chehab
On some archs, like tile, the PAGE_SIZE is not 4K. In the case of tile arch, it can be either 16KB or 64KB. Due to that, a warning is produced: drivers/media/pci/saa7134/saa7134.h:678:43: warning: large integer implicitly truncated to unsigned type [-Woverflow] This is actually an error, as it will write trach to the DMA size registers. The logic at saa7134-ts already does the right thing: saa_writeb(SAA7134_TS_DMA0, ((dev->ts.nr_packets-1)&0xff)); saa_writeb(SAA7134_TS_DMA1, (((dev->ts.nr_packets-1)>>8)&0xff)); /* TSNOPIT=0, TSCOLAP=0 */ saa_writeb(SAA7134_TS_DMA2, ((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00)); So, fix the driver to take larger page sizes into account. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-24[media] use CONFIG_PM_SLEEP for suspend/resumeMauro Carvalho Chehab
Using CONFIG_PM_SLEEP suppress the warnings when the driver is compiled without PM sleep functions: drivers/media/rc/st_rc.c:338:12: warning: ‘st_rc_suspend’ defined but not used [-Wunused-function] drivers/media/rc/st_rc.c:359:12: warning: ‘st_rc_resume’ defined but not used [-Wunused-function] Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
2015-06-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/ethernet/mellanox/mlx4/main.c net/packet/af_packet.c Both conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24nios2: check number of timer instancesLey Foon Tan
Display error message if number of timers is less than 2. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2015-06-24net: inet_diag: export IPV6_V6ONLY sockoptPhil Sutter
For AF_INET6 sockets, the value of struct ipv6_pinfo.ipv6only is exported to userspace. It indicates whether a socket bound to in6addr_any listens on IPv4 as well as IPv6. Since the socket is natively IPv6, it is not listed by e.g. 'ss -l -4'. This patch is accompanied by an appropriate one for iproute2 to enable the additional information in 'ss -e'. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24stmmac: troubleshoot unexpected bits in des0 & des1Alexey Brodkin
Current implementation of descriptor init procedure only takes care about setting/clearing ownership flag in "des0"/"des1" fields while it is perfectly possible to get unexpected bits set because of the following factors: [1] On driver probe underlying memory allocated with dma_alloc_coherent() might not be zeroed and so it will be filled with garbage. [2] During driver operation some bits could be set by SD/MMC controller (for example error flags etc). And unexpected and/or randomly set flags in "des0"/"des1" fields may lead to unpredictable behavior of GMAC DMA block. This change addresses both items above with: [1] Use of dma_zalloc_coherent() instead of simple dma_alloc_coherent() to make sure allocated memory is zeroed. That shouldn't affect performance because this allocation only happens once on driver probe. [2] Do explicit zeroing of both "des0" and "des1" fields of all buffer descriptors during initialization of DMA transfer. And while at it fixed identation of dma_free_coherent() counterpart as well. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: arc-linux-dev@synopsys.com Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Cc: David Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24Merge branch 'ipv4-nexthop-link-status'David S. Miller
Andy Gospodarek says: ==================== changes to make ipv4 routing table aware of next-hop link status This series adds the ability to have the Linux kernel track whether or not a particular route should be used based on the link-status of the interface associated with the next-hop. Before this patch any link-failure on an interface that was serving as a gateway for some systems could result in those systems being isolated from the rest of the network as the stack would continue to attempt to send frames out of an interface that is actually linked-down. When the kernel is responsible for all forwarding, it should also be responsible for taking action when the traffic can no longer be forwarded -- there is no real need to outsource link-monitoring to userspace anymore. This feature is only enabled with the new per-interface or ipv4 global sysctls called 'ignore_routes_with_linkdown'. net.ipv4.conf.all.ignore_routes_with_linkdown = 0 net.ipv4.conf.default.ignore_routes_with_linkdown = 0 net.ipv4.conf.lo.ignore_routes_with_linkdown = 0 ... When the above sysctls are set, the kernel will not only report to userspace that the link is down, but it will also report to userspace that a route is dead. This will signal to userspace that the route will not be selected. With the new sysctls set, the following behavior can be observed (interface p8p1 is link-down): default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 dead linkdown 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 dead linkdown 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 90.0.0.1 via 70.0.0.2 dev p7p1 src 70.0.0.1 cache local 80.0.0.1 dev lo src 80.0.0.1 cache <local> 80.0.0.2 via 10.0.5.2 dev p9p1 src 10.0.5.15 cache While the route does remain in the table (so it can be modified if needed rather than being wiped away as it would be if IFF_UP was cleared), the proper next-hop is chosen automatically when the link is down. Now interface p8p1 is linked-up: default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 192.168.56.0/24 dev p2p1 proto kernel scope link src 192.168.56.2 90.0.0.1 via 80.0.0.2 dev p8p1 src 80.0.0.1 cache local 80.0.0.1 dev lo src 80.0.0.1 cache <local> 80.0.0.2 dev p8p1 src 80.0.0.1 cache and the output changes to what one would expect. If the global or interface sysctl is not set, the following output would be expected when p8p1 is down: default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 linkdown 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 linkdown 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 If the dead flag does not appear there should be no expectation that the kernel would skip using this route due to link being down. v2: Split kernel changes into 2 patches: first to add linkdown flag and second to add new sysctl settings. Also took suggestion from Alex to simplify code by only checking sysctl during fib lookup and suggestion from Scott to add a per-interface sysctl. Added iproute2 patch to recognize and print linkdown flag. v3: Code cleanups along with reverse-path checks suggested by Alex and small fixes related to problems found when multipath was disabled. v4: Drop binary sysctls v5: Whitespace and variable declaration fixups suggested by Dave v6: Style changes noticed by Dave and checkpath suggestions. v7: Last checkpatch fixup. Though there were some that preferred not to have a configuration option and to make this behavior the default when it was discussed in Ottawa earlier this year since "it was time to do this." I wanted to propose the config option to preserve the current behavior for those that desire it. I'll happily remove it if Dave and Linus approve. An IPv6 implementation is also needed (DECnet too!), but I wanted to start with the IPv4 implementation to get people comfortable with the idea before moving forward. If this is accepted the IPv6 implementation can be posted shortly. There was also a request for switchdev support for this, but that will be posted as a followup as switchdev does not currently handle dead next-hops in a multi-path case and I felt that infra needed to be added first. FWIW, we have been running the original version of this series with a global sysctl and our customers have been happily using a backported version for IPv4 and IPv6 for >6 months. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net: ipv4 sysctl option to ignore routes when nexthop link is downAndy Gospodarek
This feature is only enabled with the new per-interface or ipv4 global sysctls called 'ignore_routes_with_linkdown'. net.ipv4.conf.all.ignore_routes_with_linkdown = 0 net.ipv4.conf.default.ignore_routes_with_linkdown = 0 net.ipv4.conf.lo.ignore_routes_with_linkdown = 0 ... When the above sysctls are set, will report to userspace that a route is dead and will no longer resolve to this nexthop when performing a fib lookup. This will signal to userspace that the route will not be selected. The signalling of a RTNH_F_DEAD is only passed to userspace if the sysctl is enabled and link is down. This was done as without it the netlink listeners would have no idea whether or not a nexthop would be selected. The kernel only sets RTNH_F_DEAD internally if the interface has IFF_UP cleared. With the new sysctl set, the following behavior can be observed (interface p8p1 is link-down): default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 dead linkdown 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 dead linkdown 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 90.0.0.1 via 70.0.0.2 dev p7p1 src 70.0.0.1 cache local 80.0.0.1 dev lo src 80.0.0.1 cache <local> 80.0.0.2 via 10.0.5.2 dev p9p1 src 10.0.5.15 cache While the route does remain in the table (so it can be modified if needed rather than being wiped away as it would be if IFF_UP was cleared), the proper next-hop is chosen automatically when the link is down. Now interface p8p1 is linked-up: default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 192.168.56.0/24 dev p2p1 proto kernel scope link src 192.168.56.2 90.0.0.1 via 80.0.0.2 dev p8p1 src 80.0.0.1 cache local 80.0.0.1 dev lo src 80.0.0.1 cache <local> 80.0.0.2 dev p8p1 src 80.0.0.1 cache and the output changes to what one would expect. If the sysctl is not set, the following output would be expected when p8p1 is down: default via 10.0.5.2 dev p9p1 10.0.5.0/24 dev p9p1 proto kernel scope link src 10.0.5.15 70.0.0.0/24 dev p7p1 proto kernel scope link src 70.0.0.1 80.0.0.0/24 dev p8p1 proto kernel scope link src 80.0.0.1 linkdown 90.0.0.0/24 via 80.0.0.2 dev p8p1 metric 1 linkdown 90.0.0.0/24 via 70.0.0.2 dev p7p1 metric 2 Since the dead flag does not appear, there should be no expectation that the kernel would skip using this route due to link being down. v2: Split kernel changes into 2 patches, this actually makes a behavioral change if the sysctl is set. Also took suggestion from Alex to simplify code by only checking sysctl during fib lookup and suggestion from Scott to add a per-interface sysctl. v3: Code clean-ups to make it more readable and efficient as well as a reverse path check fix. v4: Drop binary sysctl v5: Whitespace fixups from Dave v6: Style changes from Dave and checkpatch suggestions v7: One more checkpatch fixup Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: Dinesh Dutt <ddutt@cumulusnetworks.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net: track link-status of ipv4 nexthopsAndy Gospodarek
Add a fib flag called RTNH_F_LINKDOWN to any ipv4 nexthops that are reachable via an interface where carrier is off. No action is taken, but additional flags are passed to userspace to indicate carrier status. This also includes a cleanup to fib_disable_ip to more clearly indicate what event made the function call to replace the more cryptic force option previously used. v2: Split out kernel functionality into 2 patches, this patch simply sets and clears new nexthop flag RTNH_F_LINKDOWN. v3: Cleanups suggested by Alex as well as a bug noticed in fib_sync_down_dev and fib_sync_up when multipath was not enabled. v5: Whitespace and variable declaration fixups suggested by Dave. v6: Style fixups noticed by Dave; ran checkpatch to be sure I got them all. Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: Dinesh Dutt <ddutt@cumulusnetworks.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24ARM: dove: fix legacy dove IRQ numbersRussell King
v3.18 changed handle_IRQ() to call __handle_domain_irq(), which now rejects attempts to deliver IRQ0. Since IRQ 0 is used as the timer interrupt (just like the PIT on x86), this causes boot to fail as the bogomips calibration never completes. Fix this by shuffling all interrupts up by one. Fixes: a71b092a9c68 ("ARM: Convert handle_IRQ to use __handle_domain_irq") Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2015-06-24ARM: Fix build if CLKDEV_LOOKUP is not configuredGuenter Roeck
mips:allmodconfig fails to build with drivers/clocksource/timer-sp804.c: In function '__sp804_clocksource_and_sched_clock_init': drivers/clocksource/timer-sp804.c:88:3: error: implicit declaration of function 'clk_get_sys' because CLKDEV_LOOKUP is not configured and the driver depends on it. Fixes: 0b7402dce445 ("ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource") Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-06-24net: switchdev: ignore unsupported bridge flagsVivien Didelot
switchdev_port_bridge_getlink() queries SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS attributes, but a driver doesn't need to implement this in order to get bridge link information. So error out only on errors different than -EOPNOTSUPP. (This is a follow-up patch for 7d4f8d8.) Fixes: 8793d0a664a8 ("switchdev: add new switchdev_port_bridge_getlink") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net: Cavium: Fix MAC address setting in shutdown statePavel Fedin
This bug pops up with NetworkManager on Fedora 21. NetworkManager tends to stop the interface (nicvf_stop() is called) before changing settings. In stopped state MAC cannot be sent to a PF. However, when the interface is restarted (nicvf_open() is called), we ping the PF using NIC_MBOX_MSG_READY message, and the PF replies back with old MAC address, overriding what we had after MAC setting from userspace. As a result, we cannot set MAC address using NetworkManager. This patch introduces special tracking of MAC change in stopped state so that the correct new MAC address is sent to a PF when interface is reopen. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24drivers: net: xgene: fix for ACPI support without ACPIStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24ip: report the original address of ICMP messagesJulian Anastasov
ICMP messages can trigger ICMP and local errors. In this case serr->port is 0 and starting from Linux 4.0 we do not return the original target address to the error queue readers. Add function to define which errors provide addr_offset. With this fix my ping command is not silent anymore. Fixes: c247f0534cc5 ("ip: fix error queue empty skb handling") Signed-off-by: Julian Anastasov <ja@ssi.bg> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24Merge branch 'mlx-next'David S. Miller
Or Gerlitz says: ==================== Mellanox NIC drivers update, June 23 2015 This series has two fixes from Eran to his recent SRIOV counters work in mlx4 and few more updates from Saeed and Achiad to the mlx5 Ethernet code. All fixes here relate to net-next code, so no need for -stable. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net/mlx5e: Prefetch skb data on RXSaeed Mahameed
Prefetch the 1st cache line used by the buffer pointed by the skb linear data. Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net/mlx5e: Pop cq outside mlx5e_get_cqeAchiad Shochat
Separate between mlx5e_get_cqe() and mlx5_cqwq_pop(), this helps for better code readability and better CQ buffer management. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24net/mlx5e: Remove mlx5e_cq.sqrq back-pointerAchiad Shochat
Use container_of() instead. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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