1. 04 5月, 2017 19 次提交
  2. 03 5月, 2017 21 次提交
    • L
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security · 0302e28d
      Linus Torvalds 提交于
      Pull security subsystem updates from James Morris:
       "Highlights:
      
        IMA:
         - provide ">" and "<" operators for fowner/uid/euid rules
      
        KEYS:
         - add a system blacklist keyring
      
         - add KEYCTL_RESTRICT_KEYRING, exposes keyring link restriction
           functionality to userland via keyctl()
      
        LSM:
         - harden LSM API with __ro_after_init
      
         - add prlmit security hook, implement for SELinux
      
         - revive security_task_alloc hook
      
        TPM:
         - implement contextual TPM command 'spaces'"
      
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (98 commits)
        tpm: Fix reference count to main device
        tpm_tis: convert to using locality callbacks
        tpm: fix handling of the TPM 2.0 event logs
        tpm_crb: remove a cruft constant
        keys: select CONFIG_CRYPTO when selecting DH / KDF
        apparmor: Make path_max parameter readonly
        apparmor: fix parameters so that the permission test is bypassed at boot
        apparmor: fix invalid reference to index variable of iterator line 836
        apparmor: use SHASH_DESC_ON_STACK
        security/apparmor/lsm.c: set debug messages
        apparmor: fix boolreturn.cocci warnings
        Smack: Use GFP_KERNEL for smk_netlbl_mls().
        smack: fix double free in smack_parse_opts_str()
        KEYS: add SP800-56A KDF support for DH
        KEYS: Keyring asymmetric key restrict method with chaining
        KEYS: Restrict asymmetric key linkage using a specific keychain
        KEYS: Add a lookup_restriction function for the asymmetric key type
        KEYS: Add KEYCTL_RESTRICT_KEYRING
        KEYS: Consistent ordering for __key_link_begin and restrict check
        KEYS: Add an optional lookup_restriction hook to key_type
        ...
      0302e28d
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial · 89c9fea3
      Linus Torvalds 提交于
      Pull trivial tree updates from Jiri Kosina.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
        tty: fix comment for __tty_alloc_driver()
        init/main: properly align the multi-line comment
        init/main: Fix double "the" in comment
        Fix dead URLs to ftp.kernel.org
        drivers: Clean up duplicated email address
        treewide: Fix typo in xml/driver-api/basics.xml
        tools/testing/selftests/powerpc: remove redundant CFLAGS in Makefile: "-Wall -O2 -Wall" -> "-O2 -Wall"
        selftests/timers: Spelling s/privledges/privileges/
        HID: picoLCD: Spelling s/REPORT_WRTIE_MEMORY/REPORT_WRITE_MEMORY/
        net: phy: dp83848: Fix Typo
        UBI: Fix typos
        Documentation: ftrace.txt: Correct nice value of 120 priority
        net: fec: Fix typo in error msg and comment
        treewide: Fix typos in printk
      89c9fea3
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching · 76f1948a
      Linus Torvalds 提交于
      Pull livepatch updates from Jiri Kosina:
      
       - a per-task consistency model is being added for architectures that
         support reliable stack dumping (extending this, currently rather
         trivial set, is currently in the works).
      
         This extends the nature of the types of patches that can be applied
         by live patching infrastructure. The code stems from the design
         proposal made [1] back in November 2014. It's a hybrid of SUSE's
         kGraft and RH's kpatch, combining advantages of both: it uses
         kGraft's per-task consistency and syscall barrier switching combined
         with kpatch's stack trace switching. There are also a number of
         fallback options which make it quite flexible.
      
         Most of the heavy lifting done by Josh Poimboeuf with help from
         Miroslav Benes and Petr Mladek
      
         [1] https://lkml.kernel.org/r/20141107140458.GA21774@suse.cz
      
       - module load time patch optimization from Zhou Chengming
      
       - a few assorted small fixes
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
        livepatch: add missing printk newlines
        livepatch: Cancel transition a safe way for immediate patches
        livepatch: Reduce the time of finding module symbols
        livepatch: make klp_mutex proper part of API
        livepatch: allow removal of a disabled patch
        livepatch: add /proc/<pid>/patch_state
        livepatch: change to a per-task consistency model
        livepatch: store function sizes
        livepatch: use kstrtobool() in enabled_store()
        livepatch: move patching functions into patch.c
        livepatch: remove unnecessary object loaded check
        livepatch: separate enabled and patched states
        livepatch/s390: add TIF_PATCH_PENDING thread flag
        livepatch/s390: reorganize TIF thread flag bits
        livepatch/powerpc: add TIF_PATCH_PENDING thread flag
        livepatch/x86: add TIF_PATCH_PENDING thread flag
        livepatch: create temporary klp_update_patch_state() stub
        x86/entry: define _TIF_ALLWORK_MASK flags explicitly
        stacktrace/x86: add function for detecting reliable stack traces
      76f1948a
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid · 7af4c727
      Linus Torvalds 提交于
      Pull HID subsystem updates from Jiri Kosina:
      
       - The need for HID_QUIRK_NO_INIT_REPORTS per-device quirk has been
         growing dramatically during past years, so the time has come to
         switch over the default, and perform the pro-active reading only in
         cases where it's really needed (multitouch, wacom).
      
         The only place where this behavior is (in some form) preserved is
         hiddev so that we don't introduce userspace-visible change of
         behavior.
      
         From Benjamin Tissoires
      
       - HID++ support for power_supply / baterry reporting.
      
         From Benjamin Tissoires and Bastien Nocera
      
       - Vast improvements / rework of DS3 and DS4 in Sony driver.
      
         From Roderick Colenbrander
      
       - Improvment (in terms of getting closer to the Microsoft's
         interpretation of slightly ambiguous specification) of logical range
         interpretation in case null-state is set in the rdesc.
      
         From Valtteri Heikkilä and Tomasz Kramkowski
      
       - A lot of newly supported device IDs and small assorted fixes
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (71 commits)
        HID: usbhid: Add HID_QUIRK_NOGET for Aten CS-1758 KVM switch
        HID: asus: support backlight on USB keyboards
        HID: wacom: Move wacom_remote_irq and wacom_remote_status_irq
        HID: wacom: generic: sync pad events only for actual packets
        HID: sony: remove redundant check for -ve err
        HID: sony: Make sure to unregister sensors on failure
        HID: sony: Make DS4 bt poll interval adjustable
        HID: sony: Set proper bit flags on DS4 output report
        HID: sony: DS4 use brighter LED colors
        HID: sony: Improve navigation controller axis/button mapping
        HID: sony: Use DS3 MAC address as unique identifier on USB
        HID: logitech-hidpp: add a sysfs file to tell we support power_supply
        HID: logitech-hidpp: enable HID++ 1.0 battery reporting
        HID: logitech-hidpp: add support for battery status for the K750
        HID: logitech-hidpp: battery: provide CAPACITY_LEVEL
        HID: logitech-hidpp: rename battery level into capacity
        HID: logitech-hidpp: battery: provide ONLINE property
        HID: logitech-hidpp: notify battery on connect
        HID: logitech-hidpp: return an error if the queried feature is not present
        HID: logitech-hidpp: create the battery for all types of HID++ devices
        ...
      7af4c727
    • L
      Merge tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 68fed41e
      Linus Torvalds 提交于
      Pull pin control updates from Linus Walleij:
       "This is the bulk of pin control changes for the v4.12 cycle.
      
        The extra week before the merge window actually resulted in some of
        the type of fixes that usually arrive after the merge window already
        starting to trickle in from eager developers using -next, I'm
        impressed.
      
        I have recruited a Samsung subsubsystem maintainer (Krzysztof) to deal
        with the onset of Samsung patches. It works great.
      
        Apart from that it is a boring round, just incremental updates and
        fixes all over the place, no serious core changes or anything exciting
        like that. The most pleasing to see is Julia Cartwrights work to audit
        the irqchip-providing drivers for realtime locking compliance. It's
        one of those "I should really get around to looking into that" things
        that have been on my TODO list since forever.
      
        Summary:
      
        Core changes:
      
         - add bi-directional and output-enable pin configurations to the
           generic bindings and generic pin controlling core.
      
        New drivers or subdrivers:
      
         - Armada 37xx SoC pin controller and GPIO support.
      
         - Axis ARTPEC-6 SoC pin controller support.
      
         - AllWinner A64 R_PIO controller support, and opening up the
           AllWinner sunxi driver for ARM64 use.
      
         - Rockchip RK3328 support.
      
         - Renesas R-Car H3 ES2.0 support.
      
         - STM32F469 support in the STM32 driver.
      
         - Aspeed G4 and G5 pin controller support.
      
        Improvements:
      
         - a whole slew of realtime improvements to drivers implementing
           irqchips: BCM, AMD, SiRF, sunxi, rockchip.
      
         - switch meson driver to get the GPIO ranges from the device tree.
      
         - input schmitt trigger support on the Rockchip driver.
      
         - enable the sunxi (AllWinner) driver to also be used on ARM64
           silicon.
      
         - name the Qualcomm QDF2xxx GPIO lines.
      
         - support GMMR GPIO regions on the Intel Cherryview. This fixes a
           serialization problem on these platforms.
      
         - pad retention support for the Samsung Exynos 5433.
      
         - handle suspend-to-ram in the AT91-pio4 driver.
      
         - pin configuration support in the Aspeed driver.
      
        Cleanups:
      
         - the final name of Rockchip RK1108 was RV1108 so rename the driver
           and variables to stay consistent"
      
      * tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (80 commits)
        pinctrl: mediatek: Add missing pinctrl bindings for mt7623
        pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()
        pinctrl: artpec6: Remove .owner field for driver
        pinctrl: tegra: xusb: Silence sparse warnings
        ARM: at91/at91-pinctrl documentation: fix spelling mistake: "contoller" -> "controller"
        pinctrl: make artpec6 explicitly non-modular
        pinctrl: aspeed: g5: Add pinconf support
        pinctrl: aspeed: g4: Add pinconf support
        pinctrl: aspeed: Add core pinconf support
        pinctrl: aspeed: Document pinconf in devicetree bindings
        pinctrl: Add st,stm32f469-pinctrl compatible to stm32-pinctrl
        pinctrl: stm32: Add STM32F469 MCU support
        Documentation: dt: Remove ngpios from stm32-pinctrl binding
        pinctrl: stm32: replace device_initcall() with arch_initcall()
        pinctrl: stm32: add possibility to use gpio-ranges to declare bank range
        pinctrl: armada-37xx: Add gpio support
        pinctrl: armada-37xx: Add pin controller support for Armada 37xx
        pinctrl: dt-bindings: Add documentation for Armada 37xx pin controllers
        pinctrl: core: Make pinctrl_init_controller() static
        pinctrl: generic: Add bi-directional and output-enable
        ...
      68fed41e
    • L
      Merge tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · be580e75
      Linus Torvalds 提交于
      Pull MMC updates from Ulf Hansson:
       "MMC core:
         - Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
         - Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
         - Add helper functions to manage temporary enable/disable of eMMC CMDQ
         - Improve wait-busy detection for SDIO
      
        MMC host:
         - cavium: Add driver to support Cavium controllers
         - cavium: Extend Cavium driver to support Octeon and ThunderX SOCs
         - bcm2835: Add new driver for Broadcom BCM2835 controller
         - sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
         - sdhci-tegra: Add support for the Tegra186 variant
         - sdhci-of-esdhc: Support for UHS-I SD cards
         - sdhci-of-esdhc: Support for eMMC HS200 cards
         - sdhci-cadence: Add eMMC HS400 enhanced strobe support
         - sdhci-esdhc-imx: Reset tuning circuit when needed
         - sdhci-pci: Modernize and clean-up some PM related code
         - sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
         - sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
         - sdhci: Re-factoring and modernizations
         - sdhci: Optimize delay loops
         - sdhci: Improve register dump print format
         - sdhci: Add support for the Command Queue Engine
         - meson-gx: Various improvements and clean-ups
         - meson-gx: Add support for CMD23
         - meson-gx: Basic tuning support to avoid CRC errors
         - s3cmci: Enable probing via DT
         - mediatek: Improve tuning support for eMMC HS200 and HS400 mode
         - tmio: Improve DMA support
         - tmio: Use correct response for CMD12
         - dw_mmc: Minor improvements and clean-ups"
      
      * tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (148 commits)
        mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
        mmc: sdhci-of-esdhc: poll ESDHC_CLOCK_STABLE bit with udelay
        mmc: sdhci-xenon: Fix default value of LOGIC_TIMING_ADJUST for eMMC5.0 PHY
        mmc: sdhci-xenon: Fix the work flow in xenon_remove().
        MIPS: Octeon: cavium_octeon_defconfig: Enable Octeon MMC
        mmc: sdhci-xenon: Remove redundant dev_err call in get_dt_pad_ctrl_data()
        mmc: cavium: Use module_pci_driver to simplify the code
        mmc: cavium: Add MMC support for Octeon SOCs.
        mmc: cavium: Fix detection of block or byte addressing.
        mmc: core: Export API to allow hosts to get the card address
        mmc: sdio: Fix sdio wait busy implement limitation
        mmc: sdhci-esdhc-imx: reset tuning circuit when power on mmc card
        clk: apn806: fix spelling mistake: "mising" -> "missing"
        mmc: sdhci-of-esdhc: add delay between tuning cycles
        mmc: sdhci: Control the delay between tuning commands
        mmc: sdhci-of-esdhc: add tuning support
        mmc: sdhci-of-esdhc: add support for signal voltage switch
        mmc: sdhci-of-esdhc: add peripheral clock support
        mmc: sdhci-pci: Allow for 3 bytes from Intel DSM
        mmc: cavium: Fix a shift wrapping bug
        ...
      be580e75
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next · 8d65b08d
      Linus Torvalds 提交于
      Pull networking updates from David Millar:
       "Here are some highlights from the 2065 networking commits that
        happened this development cycle:
      
         1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)
      
         2) Add a generic XDP driver, so that anyone can test XDP even if they
            lack a networking device whose driver has explicit XDP support
            (me).
      
         3) Sparc64 now has an eBPF JIT too (me)
      
         4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
            Starovoitov)
      
         5) Make netfitler network namespace teardown less expensive (Florian
            Westphal)
      
         6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)
      
         7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)
      
         8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)
      
         9) Multiqueue support in stmmac driver (Joao Pinto)
      
        10) Remove TCP timewait recycling, it never really could possibly work
            well in the real world and timestamp randomization really zaps any
            hint of usability this feature had (Soheil Hassas Yeganeh)
      
        11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
            Aleksandrov)
      
        12) Add socket busy poll support to epoll (Sridhar Samudrala)
      
        13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
            and several others)
      
        14) IPSEC hw offload infrastructure (Steffen Klassert)"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
        tipc: refactor function tipc_sk_recv_stream()
        tipc: refactor function tipc_sk_recvmsg()
        net: thunderx: Optimize page recycling for XDP
        net: thunderx: Support for XDP header adjustment
        net: thunderx: Add support for XDP_TX
        net: thunderx: Add support for XDP_DROP
        net: thunderx: Add basic XDP support
        net: thunderx: Cleanup receive buffer allocation
        net: thunderx: Optimize CQE_TX handling
        net: thunderx: Optimize RBDR descriptor handling
        net: thunderx: Support for page recycling
        ipx: call ipxitf_put() in ioctl error path
        net: sched: add helpers to handle extended actions
        qed*: Fix issues in the ptp filter config implementation.
        qede: Fix concurrency issue in PTP Tx path processing.
        stmmac: Add support for SIMATIC IOT2000 platform
        net: hns: fix ethtool_get_strings overflow in hns driver
        tcp: fix wraparound issue in tcp_lp
        bpf, arm64: fix jit branch offset related to ldimm64
        bpf, arm64: implement jiting of BPF_XADD
        ...
      8d65b08d
    • L
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 5a0387a8
      Linus Torvalds 提交于
      Pull crypto updates from Herbert Xu:
       "Here is the crypto update for 4.12:
      
        API:
         - Add batch registration for acomp/scomp
         - Change acomp testing to non-unique compressed result
         - Extend algorithm name limit to 128 bytes
         - Require setkey before accept(2) in algif_aead
      
        Algorithms:
         - Add support for deflate rfc1950 (zlib)
      
        Drivers:
         - Add accelerated crct10dif for powerpc
         - Add crc32 in stm32
         - Add sha384/sha512 in ccp
         - Add 3des/gcm(aes) for v5 devices in ccp
         - Add Queue Interface (QI) backend support in caam
         - Add new Exynos RNG driver
         - Add ThunderX ZIP driver
         - Add driver for hardware random generator on MT7623 SoC"
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (101 commits)
        crypto: stm32 - Fix OF module alias information
        crypto: algif_aead - Require setkey before accept(2)
        crypto: scomp - add support for deflate rfc1950 (zlib)
        crypto: scomp - allow registration of multiple scomps
        crypto: ccp - Change ISR handler method for a v5 CCP
        crypto: ccp - Change ISR handler method for a v3 CCP
        crypto: crypto4xx - rename ce_ring_contol to ce_ring_control
        crypto: testmgr - Allow ecb(cipher_null) in FIPS mode
        Revert "crypto: arm64/sha - Add constant operand modifier to ASM_EXPORT"
        crypto: ccp - Disable interrupts early on unload
        crypto: ccp - Use only the relevant interrupt bits
        hwrng: mtk - Add driver for hardware random generator on MT7623 SoC
        dt-bindings: hwrng: Add Mediatek hardware random generator bindings
        crypto: crct10dif-vpmsum - Fix missing preempt_disable()
        crypto: testmgr - replace compression known answer test
        crypto: acomp - allow registration of multiple acomps
        hwrng: n2 - Use devm_kcalloc() in n2rng_probe()
        crypto: chcr - Fix error handling related to 'chcr_alloc_shash'
        padata: get_next is never NULL
        crypto: exynos - Add new Exynos RNG driver
        ...
      5a0387a8
    • D
      Merge branch 'tipc-refactor-socket-receive-functions' · 5d15af67
      David S. Miller 提交于
      Jon Maloy says:
      
      ====================
      tipc: refactor socket receive functions
      
      We try to make the functions tipc_sk_recvmsg() and
      tipc_sk_recvstream() more readable.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5d15af67
    • J
      tipc: refactor function tipc_sk_recv_stream() · ec8a09fb
      Jon Paul Maloy 提交于
      We try to make this function more readable by improving variable names
      and comments, using more stack variables, and doing some smaller changes
      to the logics. We also rename the function to make it consistent with
      naming conventions used elsewhere in the code.
      Reviewed-by: NParthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
      Signed-off-by: NJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ec8a09fb
    • J
      tipc: refactor function tipc_sk_recvmsg() · e9f8b101
      Jon Paul Maloy 提交于
      We try to make this function more readable by improving variable names
      and comments, plus some minor changes to the logics.
      Reviewed-by: NParthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
      Signed-off-by: NJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e9f8b101
    • D
      Merge branch 'thunderx-xdp' · b0e92279
      David S. Miller 提交于
      Sunil Goutham says:
      
      ====================
      net: thunderx: Adds XDP support
      
      This patch series adds support for XDP to ThunderX NIC driver
      which is used on CN88xx, CN81xx and CN83xx platforms.
      
      Patches 1-4 are performance improvement and cleanup patches
      which are done keeping XDP performance bottlenecks in view.
      Rest of the patches adds actual XDP support.
      ====================
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b0e92279
    • S
      net: thunderx: Optimize page recycling for XDP · 77322538
      Sunil Goutham 提交于
      Driver follows a method of taking one extra reference on the
      page for recycling which is fine in usual packet path where
      each 64KB page is segmented into multiple receive buffers.
      
      But in XDP mode since there is just one receive buffer per
      page taking extra page reference itself becomes big bottleneck
      consuming ~50% of CPU cycles due to atomic operations.
      
      This patch adds a internal ref count in pgcache for each
      page and additional page references are taken in a batch
      instead of just one at a time. Internal i.e 'pgcache->ref_count'
      and page's i.e 'page->_refcount' counters are compared to check
      page's recyclability.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      77322538
    • S
      net: thunderx: Support for XDP header adjustment · e3d06ff9
      Sunil Goutham 提交于
      When in XDP mode reserve XDP_PACKET_HEADROOM bytes at the start
      of receive buffer for XDP program to modify headers and adjust
      packet start. Additional code changes done to handle such packets.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e3d06ff9
    • S
      net: thunderx: Add support for XDP_TX · 16f2bccd
      Sunil Goutham 提交于
      Adds support for XDP_TX i.e transmits packet out of
      the XDP TX queue mapped to the corresponding Rx queue
      on which packet is received.
      
      Since SQ for XDP TX will be used only on a single cpu i.e
      SQ description creation and freeing, using atomic free count
      is not necessary and will become a bottleneck. Hence added
      a separate 'xdp_free_cnt' used for SQs designated for XDP
      to track descriptor free count.
      
      Changes also include
      - A new entry 'xdp_page' is added to save transmitted packet's
        page pointer for later cleanup.
      - XDP Tx SQ's doorbell is ringed once per NAPI instance.
      - Retrieving designated SQ for packets being sent out by stack
        via 'nicvf_xmit'.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      16f2bccd
    • S
      net: thunderx: Add support for XDP_DROP · c56d91ce
      Sunil Goutham 提交于
      Adds support for XDP_DROP.
      Also since in XDP mode there is just a single buffer per page,
      made changes to recycle DMA mapping info as well along with pages.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c56d91ce
    • S
      net: thunderx: Add basic XDP support · 05c773f5
      Sunil Goutham 提交于
      Adds basic XDP support i.e attaching a BPF program to an
      interface. Also takes care of allocating separate Tx queues
      for XDP path and for network stack packet transmission.
      
      This patch doesn't support handling of any of the XDP actions,
      all are treated as XDP_PASS i.e packets will be handed over to
      the network stack.
      
      Changes also involve allocating one receive buffer per page in XDP
      mode and multiple in normal mode i.e when no BPF program is attached.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      05c773f5
    • S
      net: thunderx: Cleanup receive buffer allocation · 927987f3
      Sunil Goutham 提交于
      Get rid of unnecessary double pointer references and type casting
      in receive buffer allocation code.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      927987f3
    • S
      net: thunderx: Optimize CQE_TX handling · 0dada88b
      Sunil Goutham 提交于
      Optimized CQE handling with below changes
      - Feeing descriptors back to SQ in bulk i.e once per NAPI
        instance instead for every CQE_TX, this will reduce number
        of atomic updates to 'sq->free_cnt'.
      - Checking errors in CQE_TX and CQE_RX before calling appropriate
        fn()s to update error stats i.e reduce branching.
      
      Also removed debug messages in packet handling path which otherwise
      causes issues if DEBUG is enabled.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      0dada88b
    • S
      net: thunderx: Optimize RBDR descriptor handling · 5e848e4c
      Sunil Goutham 提交于
      Receive buffer's physical address or iova will anyway not
      go beyond 49bits, since it is the max supported HW address.
      As per perf, updating bitfields i.e buf_addr:42 in RBDR
      descriptor entry consumes lots of cpu cycles, hence changed
      it to a 64bit field with alignment requirements taken care of.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5e848e4c
    • S
      net: thunderx: Support for page recycling · 5836b442
      Sunil Goutham 提交于
      Adds support for page recycling for allocating receive buffers
      to reduce cost of refilling RBDR ring. Also got rid of using
      compound pages when pagesize is 4K, only order-0 pages now.
      
      Only page is recycled, DMA mappings still needs to be done for
      every receive buffer allocated due to following constraints
      - Cannot have just one receive buffer per 64KB page.
      - There is just one buffer ring shared across 8 Rx queues, so
        buffers of same page can go to any Rx queue.
      - HW gives buffer address where packet has been DMA'ed and not
        the index into buffer ring.
      This makes it not possible to resue DMA mapping info. So unfortunately
      have to go through costly mapping route for every buffer.
      Signed-off-by: NSunil Goutham <sgoutham@cavium.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5836b442