1. 28 Jan, 2019 3 commits
  2. 27 Jan, 2019 12 commits
    • David S. Miller's avatar
      Merge branch 'tcp-change-pingpong-to-3-in-delayed-ack-logic' · 889865cf
      David S. Miller authored
      Wei Wang says:
      
      ====================
      tcp: change pingpong to 3 in delayed ack logic
      
      TCP receiver today tries not to delay the ACKs to speed up the initial
      slow start (a.k.a QUICK ACK mechanism). However the previous design
      does not work well with modern TCP applications that starts with an
      application-level handshake. For example, a HTTPs server often
      receives the SSL hello and responds right away which triggers the TCP
      stack to stop the quick ack and start delaying the ACKs based only one
      instance of ping-pong. This patchset changes the threshold from 1 to 3
      ping-pong transactions, so that we only start to delay the acks after
      the receiver responds data quickly three times.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      889865cf
    • Wei Wang's avatar
      tcp: change pingpong threshold to 3 · 4a41f453
      Wei Wang authored
      In order to be more confident about an on-going interactive session, we
      increment pingpong count by 1 for every interactive transaction and we
      adjust TCP_PINGPONG_THRESH to 3.
      This means, we only consider a session in pingpong mode after we see 3
      interactive transactions, and start to activate delayed acks in quick
      ack mode.
      And in order to not over-count the credits, we only increase pingpong
      count for the first packet sent in response for the previous received
      packet.
      This is mainly to prevent delaying the ack immediately after some
      handshake protocol but no real interactive traffic pattern afterwards.
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4a41f453
    • Wei Wang's avatar
      tcp: Refactor pingpong code · 31954cd8
      Wei Wang authored
      Instead of using pingpong as a single bit information, we refactor the
      code to treat it as a counter. When interactive session is detected,
      we set pingpong count to TCP_PINGPONG_THRESH. And when pingpong count
      is >= TCP_PINGPONG_THRESH, we consider the session in pingpong mode.
      
      This patch is a pure refactor and sets foundation for the next patch.
      This patch itself does not change any pingpong logic.
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      31954cd8
    • Yang Wei's avatar
      net: ipv4: ip_input: fix blank line coding style issues · fb1b6999
      Yang Wei authored
      Fix blank line coding style issues, make the code cleaner.
      Remove a redundant blank line in ip_rcv_core().
      Insert a blank line in ip_rcv() between different statement blocks.
      Signed-off-by: default avatarYang Wei <yang.wei9@zte.com.cn>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fb1b6999
    • Carlo Caione's avatar
      net: phy: at803x: Use helpers to access MMD PHY registers · 0e021396
      Carlo Caione authored
      Libphy provides a standard set of helpers to access the MMD PHY
      registers. Use those instead of relying on custom driver-specific
      functions.
      Signed-off-by: default avatarCarlo Caione <ccaione@baylibre.com>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0e021396
    • David S. Miller's avatar
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 1fc7f56d
      Linus Torvalds authored
      Pull KVM fixes from Paolo Bonzini:
       "Quite a few fixes for x86: nested virtualization save/restore, AMD
        nested virtualization and virtual APIC, 32-bit fixes, an important fix
        to restore operation on older processors, and a bunch of hyper-v
        bugfixes. Several are marked stable.
      
        There are also fixes for GCC warnings and for a GCC/objtool interaction"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86: Mark expected switch fall-throughs
        KVM: x86: fix TRACE_INCLUDE_PATH and remove -I. header search paths
        KVM: selftests: check returned evmcs version range
        x86/kvm/hyper-v: nested_enable_evmcs() sets vmcs_version incorrectly
        KVM: VMX: Move vmx_vcpu_run()'s VM-Enter asm blob to a helper function
        kvm: selftests: Fix region overlap check in kvm_util
        kvm: vmx: fix some -Wmissing-prototypes warnings
        KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1
        svm: Fix AVIC incomplete IPI emulation
        svm: Add warning message for AVIC IPI invalid target
        KVM: x86: WARN_ONCE if sending a PV IPI returns a fatal error
        KVM: x86: Fix PV IPIs for 32-bit KVM host
        x86/kvm/hyper-v: recommend using eVMCS only when it is enabled
        x86/kvm/hyper-v: don't recommend doing reset via synthetic MSR
        kvm: x86/vmx: Use kzalloc for cached_vmcs12
        KVM: VMX: Use the correct field var when clearing VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL
        KVM: x86: Fix single-step debugging
        x86/kvm/hyper-v: don't announce GUEST IDLE MSR support
      1fc7f56d
    • Linus Torvalds's avatar
      Merge tag 'dma-mapping-5.0-2' of git://git.infradead.org/users/hch/dma-mapping · c180f1b0
      Linus Torvalds authored
      Pull dma-mapping fix from Christoph Hellwig:
       "Fix a xen-swiotlb regression on arm64"
      
      * tag 'dma-mapping-5.0-2' of git://git.infradead.org/users/hch/dma-mapping:
        arm64/xen: fix xen-swiotlb cache flushing
      c180f1b0
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-fixes-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 6a2651b5
      Linus Torvalds authored
      Pull libnvdimm fixes from Dan Williams:
       "A fix for namespace label support for non-Intel NVDIMMs that implement
        the ACPI standard label method.
      
        This has apparently never worked and could wait for v5.1. However it
        has enough visibility with hardware vendors [1] and distro bug
        trackers [2], and low enough risk that I decided it should go in for
        -rc4. The other fixups target the new, for v5.0, nvdimm security
        functionality. The larger init path fixup closes a memory leak and a
        potential userspace lockup due to missed notifications.
      
          [1] https://github.com/pmem/ndctl/issues/78
          [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1811785
      
        These have all soaked in -next for a week with no reported issues.
      
        Summary:
      
         - Fix support for NVDIMMs that implement the ACPI standard label
           methods.
      
         - Fix error handling for security overwrite (memory leak / userspace
           hang condition), and another one-line security cleanup"
      
      * tag 'libnvdimm-fixes-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        acpi/nfit: Fix command-supported detection
        acpi/nfit: Block function zero DSMs
        libnvdimm/security: Require nvdimm_security_setup_events() to succeed
        nfit_test: fix security state pull for nvdimm security nfit_test
      6a2651b5
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 78e372e6
      Linus Torvalds authored
      Pull input fixes from Dmitry Torokhov:
       "A fixup for the input_event fix for y2038 Sparc64, and couple other
        minor fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: input_event - fix the CONFIG_SPARC64 mixup
        Input: olpc_apsp - assign priv->dev earlier
        Input: uinput - fix undefined behavior in uinput_validate_absinfo()
        Input: raspberrypi-ts - fix link error
        Input: xpad - add support for SteelSeries Stratus Duo
        Input: input_event - provide override for sparc64
      78e372e6
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 037222ad
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Count ttl-dropped frames properly in mac80211, from Bob Copeland.
      
       2) Integer overflow in ktime handling of bcm can code, from Oliver
          Hartkopp.
      
       3) Fix RX desc handling wrt. hw checksumming in ravb, from Simon
          Horman.
      
       4) Various hash key fixes in hv_netvsc, from Haiyang Zhang.
      
       5) Use after free in ax25, from Eric Dumazet.
      
       6) Several fixes to the SSN support in SCTP, from Xin Long.
      
       7) Do not process frames after a NAPI reschedule in ibmveth, from
          Thomas Falcon.
      
       8) Fix NLA_POLICY_NESTED arguments, from Johannes Berg.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (42 commits)
        qed: Revert error handling changes.
        cfg80211: extend range deviation for DMG
        cfg80211: reg: remove warn_on for a normal case
        mac80211: Add attribute aligned(2) to struct 'action'
        mac80211: don't initiate TDLS connection if station is not associated to AP
        nl80211: fix NLA_POLICY_NESTED() arguments
        ibmveth: Do not process frames after calling napi_reschedule
        net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP
        net: usb: asix: ax88772_bind return error when hw_reset fail
        MAINTAINERS: Update cavium networking drivers
        net/mlx4_core: Fix error handling when initializing CQ bufs in the driver
        net/mlx4_core: Add masking for a few queries on HCA caps
        sctp: set flow sport from saddr only when it's 0
        sctp: set chunk transport correctly when it's a new asoc
        sctp: improve the events for sctp stream adding
        sctp: improve the events for sctp stream reset
        ip_tunnel: Make none-tunnel-dst tunnel port work with lwtunnel
        ax25: fix possible use-after-free
        sfc: suppress duplicate nvmem partition types in efx_ef10_mtd_probe
        hv_netvsc: fix typos in code comments
        ...
      037222ad
    • Masahiro Yamada's avatar
      net: lmc: remove -I. header search path · 085c4c7d
      Masahiro Yamada authored
      The header search path -I. in kernel Makefiles is very suspicious;
      it allows the compiler to search for headers in the top of $(srctree),
      where obviously no header file exists.
      
      I was able to build without this header search path.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      085c4c7d
  3. 26 Jan, 2019 25 commits