1. 05 Dec, 2015 2 commits
  2. 04 Dec, 2015 16 commits
    • David S. Miller's avatar
      Merge branch 'qmi_wwan_MDM9x30' · 2141eaf0
      David S. Miller authored
      Bjørn Mork says:
      
      ====================
      net: qmi_wwan: MDM9x30 support
      
      We add new device IDs all the time, often without any testing on
      actual hardware. This is usually OK as long as the device is similar
      to already supported devices, using the same chipset and firmware
      basis.  But the Sierra Wireless MC7455 is an example of a new chipset
      generation. Adding it based on assumed similarity with its ancestors
      proved too optimistic.
      
      This series adds the missing bits and pieces necessary to support LTE
      Advanced modems based on the Qualcomm MDM9x30 chipset. A big thanks to
      Sierra Wireless for providing MC7455 samples for testing
      
      The most important change is the "raw-ip" support. The series also
      adds a necessary control request, removes an unsupported device ID,
      and adds a driver specific entry in MAINTAINERS.
      
      A few random notes about "raw-ip":
      
      "I rather have these all running in raw IP mode. The 802.3 framing is
      utterly stupid." - Marcel Holtmann in Jan 2012 [1]
      
      Marcel was right.  I should have listened to him. What more can I say?
      
      The 802.3 framing has provided a steady supply of firmware bugs for
      many years. We've added driver workarounds for many of these, but
      there are still known bugs where the workaround is so yucky that we
      have refused to apply it. But all that is over now.  The latest
      generation Qualcomm chips no longer supports 802.3 framing at all.
      
      I had two open questions regarding the "raw-ip" userspace API:
      
      1) Should we continue faking an ethernet device, even if we don't use
         the L2 headers on the USB link anymore?
      
         There was a vote in favour of the "headerless" device. This is the
         honest representation of the hardware/firmware interface.
      
      2) What input should the driver base its framing on?
      
         Snooping or directly manipulating QMI is considered out of the
         question. We delegated all QMI handling to userspace from the
         beginning.
      
         We have so far required userspace to configure the firmware for
         "802.3" framing, or fail if that proved impossible.  This
         requirement is now changed.  Userspace must now inform the driver
         if it negotiates "raw-ip" framing.  Two alternative interfaces were
         proposed:
          - ethtool private driver flag, or
          - sysfs file
      
         The NetworkManager/ModemManager developers were in favour of the
         sysfs alternative.
      
      These questions (or any other you migh have :) are of course still
      open.  This patch set presents the solutions I currently prefer,
      considering the above.
      
      All comments are appreciated, even simple '+1' ones.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2141eaf0
    • Bjørn Mork's avatar
      MAINTAINERS: add qmi_wwan driver entry · 4521b477
      Bjørn Mork authored
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4521b477
    • Bjørn Mork's avatar
      40dd0d94
    • Bjørn Mork's avatar
      net: qmi_wwan: support "raw IP" mode · 32f7adf6
      Bjørn Mork authored
      QMI wwan devices have traditionally emulated ethernet devices
      by default. But they have always had the capability of operating
      without any L2 header at all, transmitting and receiving "raw"
      IP packets over the USB link.  This firmware feature used to be
      configurable through the QMI management protocol.
      
      Traditionally there was no way to verify the firmware mode
      without attempting to change it.  And the firmware would often
      disallow changes anyway, i.e. due to a session already being
      established.  In some cases, this could be a hidden firmware
      internal session, completely outside host control.  For these
      reasons, sticking with the "well known" default mode was safest.
      
      But newer generations of QMI hardware and firmware have moved
      towards defaulting to "raw IP" mode instead, followed by an
      increasing number of bugs in the already buggy "802.3" firmware
      implementation. At the same time, the QMI management protocol
      gained the ability to detect the current mode.  This has enabled
      the userspace QMI management application to verify the current
      firmware mode without trying to modify it.
      
      Following this development, the latest QMI hardware and firmware
      (the MDM9x30 generation) has dropped support for "802.3" mode
      entirely. Support for "raw IP" framing in the driver is therefore
      necessary for these devices, and to a certain degree to work
      around problems with the previous generation,
      
      This patch adds support for "raw IP" framing for QMI devices,
      changing the netdev from an ethernet device to an ARPHRD_NONE
      p-t-p device when "raw IP" framing is enabled.
      
      The firmware setup is fully delegated to the QMI userspace
      management application, through simple tunneling of the QMI
      protocol. The driver will therefore not know which mode has been
      "negotiated" between firmware and userspace. Allowing userspace
      to inform the driver of the result through a sysfs switch is
      considered a better alternative than to change the well established
      clean delegation of firmware management to userspace.
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      32f7adf6
    • Bjørn Mork's avatar
      usbnet: allow mini-drivers to consume L2 headers · 81e0ce79
      Bjørn Mork authored
      Assume the minidriver has taken care of all L2 header parsing
      if it sets skb->protocol.  This allows the minidriver to
      support non-ethernet L2 headers, and even operate without
      any L2 header at all.
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Acked-by: default avatarOliver Neukum <oneukum@suse.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      81e0ce79
    • Bjørn Mork's avatar
      net: qmi_wwan: remove 1199:9070 device id · 544c8f65
      Bjørn Mork authored
      This turned out to be a bootloader device ID.  No need for
      that in this driver.  It will only provide a single serial
      function.
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      544c8f65
    • Bjørn Mork's avatar
      net: qmi_wwan: MDM9x30 specific power management · 93725149
      Bjørn Mork authored
      MDM9x30 based modems appear to go into a deeper sleep when
      suspended without "Remote Wakeup" enabled.  The QMI interface
      will not respond unless a "set DTR" control request is sent
      on resume. The effect is similar to a QMI_CTL SYNC request,
      resetting (some of) the firmware state.
      
      We allow userspace sessions to span multiple character device
      open/close sequences.  This means that userspace can depend
      on firmware state while both the netdev and the character
      device are closed.  We have disabled "needs_remote_wakeup" at
      this point to allow devices without remote wakeup support to
      be auto-suspended.
      
      To make sure the MDM9x30 keeps firmware state, we need to
      keep "needs_remote_wakeup" always set. We also need to
      issue a "set DTR" request to enable the QMI interface.
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      93725149
    • David S. Miller's avatar
      Merge branch 'hip06-soc' · 43dd7a8b
      David S. Miller authored
      Salil Mehta says:
      
      ====================
      net:hns: Add support of Hip06 SoC to the Hislicon Network Subsystem
      
      This PATCH V7 addresses the TAB formatting comments by
      Sergei Shtylyov. Missing TABs at some other palces have
      also been corrected.
      
      PATCH V6:
      This addresses the review comments provided by
      David Miller over the existing use of ENABLE/DISABLE
      hash defines with the code. These hash defines are doing
      a similar job as implicit type bool would do. So these are
      kind of duplicate and are redundant.
      
      PATCH V5:
      This PATCH addresses the review comments by Yuval Mintz
       <Yuval.Mintz@qlogic.com>. This rework of comments are basically
       related to:
       1) styling of the code,
       2) RSS default Key initiailization related code
       3) redundant code removal
      
      PATCH V4:
      This addresses the review comment provided by
      Sergei Shtylyov. The changelog of every patch has also
      been modified.
      
      PATCH V3:
       Addresses the review comment floated by David Miller
      
      PATCH V2:
      1) Bug Fixes and Clean-up: Internally identified
      2) Addresses internal review comments by Kenneth Lee and
         by Huang Daode
      3) Addresses the review comment from "Yisen.Zhuang(Zhuangyuzeng)"
      4) Adds fix from Fengguang Wu for an error generated from
         "kbuild test robot" from Intel
      5) Ethtool support for TSO set option from Lisheng
      
      PATCH V1:
      Adds initial support of Hip06 SoC with below changes:
      This patch-set adds support of new Hisilicon Hip06 SoC to the existing
      (already part of net-next) HNS ethernet driver for Hip05 SoC. Hip06 is
      a multi-core SoC and is a derivative of Hip05 SoC with lots of new
      hardware featres supported like RSS, TSO, hardware VLAN assist etc.
      
      The changes in the driver are mainly due to following:
       1) changes in the DMA descriptor provided by the Hip06 ethernet
          hardware. These changes need to co-exist with already present
          Hip05 DMA descriptor and its operating functions. The decision
          to choose the correct type of DMA descriptor is taken dynamically
          depending upon the version of the hardware (i.e. V1/hip05 or
          V2/hip06, see already existing hisilicon-hns-nic.txt binding file
          for the detailed description version and naming).
       2) To support new features added to the Hip06 ethernet hardware:
          a. RSS (Receive Side Scaling)
          b. TSO (TCP Segment Offload)
          c. Hardware VLAN support (currently we are initializing hardware
             to not assist in stripping the vlan tag at hardware level.
             Proper support of this feature and ethtool would come after
             these patches have been accepted)
      
      Kindly note that, this patchset has been based on latest net-next.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      43dd7a8b
    • Salil's avatar
      net:hns: Add the init code to disable Hip06 "Hardware VLAN assist" · 8044f97e
      Salil authored
      This patch adds the initializzation code to disable the hardware
      vlan support for VLAN Tag stripping by default for now.
      
      Proper support of "hardware VLAN assitance" feature would
      soon come in the next coming patches.
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8044f97e
    • Salil's avatar
      net:hns: Add support of ethtool TSO set option for Hip06 in HNS · 38f616da
      Salil authored
      This patch adds the support of ethtool TSO option to support
      Hip06 SoC to HNS
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Signed-off-by: default avatarlisheng <lisheng011@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      38f616da
    • Salil's avatar
      net:hns: Add Hip06 "TSO(TCP Segment Offload)" support HNS Driver · 64353af6
      Salil authored
      This patch adds the support of "TSO (TCP Segment Offload)" feature
      provided by the Hip06 ethernet hardware to the HNS ethernet
      driver.
      
      Enabling this feature would help offload the TCP Segmentation
      process to the Hip06 ethernet hardware. This eventually would help
      in saving precious cpu cycles.
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Signed-off-by: default avatarlisheng <lisheng011@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      64353af6
    • Salil's avatar
      net:hns: Add Hip06 "RSS(Receive Side Scaling)" support to HNS Driver · 6bc0ce7d
      Salil authored
      This patch adds the support of "RSS (Receive Side Scaling)" feature
      provided by the Hip06 ethernet hardware to the HNS ethernet
      driver.
      
      This feature helps in distributing the different flows (mapped as
      hash by hardware using Toeplitz Hash) to different Queues asssociated
      with the processor cores. The mapping of flow-hash values to the
      different queues is stored in indirection table (which is per Packet-
      parse-Engine/PPE). This patch also provides the changes to re-program
      the (flow-hash<->Qid) mapping using the ethtool.
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Reviewed-by: default avatarKenneth Lee <liguozhu@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6bc0ce7d
    • Salil's avatar
      net:hns: Add support of Hip06 SoC to the Hislicon Network Subsystem · 13ac695e
      Salil authored
      This patchset adds support of Hisilicon Hip06 SoC to the existing HNS
      ethernet driver.
      
      The changes in the driver are mainly due to changes in the DMA
      descriptor provided by the Hip06 ethernet hardware. These changes
      need to co-exist with already present Hip05 DMA descriptor and its
      operating functions. The decision to choose the correct type of DMA
      descriptor is taken dynamically depending upon the version of the
      hardware (i.e. V1/hip05 or V2/hip06, see already existing
      hisilicon-hns-nic.txt binding file for detailed description). other
      changes includes in SBM, DSAF and PPE modules as well. Changes
      affecting the driver related to the newly added ethernet hardware
      features in Hip06 would be added as separate patch over this and
      subsequent patches.
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Signed-off-by: default avataryankejian <yankejian@huawei.com>
      Signed-off-by: default avatarhuangdaode <huangdaode@hisilicon.com>
      Signed-off-by: default avatarlipeng <lipeng321@huawei.com>
      Signed-off-by: default avatarlisheng <lisheng011@huawei.com>
      Signed-off-by: default avatarFengguang Wu <fengguang.wu@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      13ac695e
    • yzhu1's avatar
      net: bonding: remove redudant brackets · ce3ea1c7
      yzhu1 authored
      It is not necessary to use two brackets. As such, the redudant brackets
      are removed.
      
      CC: Jay Vosburgh <j.vosburgh@gmail.com>
      CC: Veaceslav Falico <vfalico@gmail.com>
      CC: Andy Gospodarek <gospo@cumulusnetworks.com>
      Signed-off-by: default avatarZhu Yanjun <yanjun.zhu@windriver.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ce3ea1c7
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · f188b951
      David S. Miller authored
      Conflicts:
      	drivers/net/ethernet/renesas/ravb_main.c
      	kernel/bpf/syscall.c
      	net/ipv4/ipmr.c
      
      All three conflicts were cases of overlapping changes.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f188b951
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 071f5d10
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "A lot of Thanksgiving turkey leftovers accumulated, here goes:
      
         1) Fix bluetooth l2cap_chan object leak, from Johan Hedberg.
      
         2) IDs for some new iwlwifi chips, from Oren Givon.
      
         3) Fix rtlwifi lockups on boot, from Larry Finger.
      
         4) Fix memory leak in fm10k, from Stephen Hemminger.
      
         5) We have a route leak in the ipv6 tunnel infrastructure, fix from
            Paolo Abeni.
      
         6) Fix buffer pointer handling in arm64 bpf JIT,f rom Zi Shen Lim.
      
         7) Wrong lockdep annotations in tcp md5 support, fix from Eric
            Dumazet.
      
         8) Work around some middle boxes which prevent proper handling of TCP
            Fast Open, from Yuchung Cheng.
      
         9) TCP repair can do huge kmalloc() requests, build paged SKBs
            instead.  From Eric Dumazet.
      
        10) Fix msg_controllen overflow in scm_detach_fds, from Daniel
            Borkmann.
      
        11) Fix device leaks on ipmr table destruction in ipv4 and ipv6, from
            Nikolay Aleksandrov.
      
        12) Fix use after free in epoll with AF_UNIX sockets, from Rainer
            Weikusat.
      
        13) Fix double free in VRF code, from Nikolay Aleksandrov.
      
        14) Fix skb leaks on socket receive queue in tipc, from Ying Xue.
      
        15) Fix ifup/ifdown crach in xgene driver, from Iyappan Subramanian.
      
        16) Fix clearing of persistent array maps in bpf, from Daniel
            Borkmann.
      
        17) In TCP, for the cross-SYN case, we don't initialize tp->copied_seq
            early enough.  From Eric Dumazet.
      
        18) Fix out of bounds accesses in bpf array implementation when
            updating elements, from Daniel Borkmann.
      
        19) Fill gaps in RCU protection of np->opt in ipv6 stack, from Eric
            Dumazet.
      
        20) When dumping proxy neigh entries, we have to accomodate NULL
            device pointers properly, from Konstantin Khlebnikov.
      
        21) SCTP doesn't release all ipv6 socket resources properly, fix from
            Eric Dumazet.
      
        22) Prevent underflows of sch->q.qlen for multiqueue packet
            schedulers, also from Eric Dumazet.
      
        23) Fix MAC and unicast list handling in bnxt_en driver, from Jeffrey
            Huang and Michael Chan.
      
        24) Don't actively scan radar channels, from Antonio Quartulli"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (110 commits)
        net: phy: reset only targeted phy
        bnxt_en: Setup uc_list mac filters after resetting the chip.
        bnxt_en: enforce proper storing of MAC address
        bnxt_en: Fixed incorrect implementation of ndo_set_mac_address
        net: lpc_eth: remove irq > NR_IRQS check from probe()
        net_sched: fix qdisc_tree_decrease_qlen() races
        openvswitch: fix hangup on vxlan/gre/geneve device deletion
        ipv4: igmp: Allow removing groups from a removed interface
        ipv6: sctp: implement sctp_v6_destroy_sock()
        arm64: bpf: add 'store immediate' instruction
        ipv6: kill sk_dst_lock
        ipv6: sctp: add rcu protection around np->opt
        net/neighbour: fix crash at dumping device-agnostic proxy entries
        sctp: use GFP_USER for user-controlled kmalloc
        sctp: convert sack_needed and sack_generation to bits
        ipv6: add complete rcu protection around np->opt
        bpf: fix allocation warnings in bpf maps and integer overflow
        mvebu: dts: enable IP checksum with jumbo frames for Armada 38x on Port0
        net: mvneta: enable setting custom TX IP checksum limit
        net: mvneta: fix error path for building skb
        ...
      071f5d10
  3. 03 Dec, 2015 22 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 2873d32f
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes from this series.  The most important here is a
        regression fix for an issue that some folks would hit in blk-merge.c,
        and the NVMe queue depth limit for the screwed up Apple "nvme"
        controller.
      
        In more detail, this pull request contains:
      
         - a set of fixes for null_blk, including a fix for a few corner cases
           where we could hang the device.  From Arianna and Paolo.
      
         - lightnvm:
              - A build improvement from Keith.
              - Update the qemu pci id detection from Matias.
              - Error handling fixes for leaks and other little fixes from
                Sudip and Wenwei.
      
         - fix from Eric where BLKRRPART would not return EBUSY for whole
           device mounts, only when partitions were mounted.
      
         - fix from Jan Kara, where EOF O_DIRECT reads would return
           negatively.
      
         - remove check for rq_mergeable() when checking limits for cloned
           requests.  The check doesn't make any sense.  It's assuming that
           since NOMERGE is set on the request that we don't have to
           recalculate limits since the request didn't change, but that's not
           true if the request has been redirected.  From Hannes.
      
         - correctly get the bio front segment value set for single segment
           bio's, fixing a BUG() in blk-merge.  From Ming"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        nvme: temporary fix for Apple controller reset
        null_blk: change type of completion_nsec to unsigned long
        null_blk: guarantee device restart in all irq modes
        null_blk: set a separate timer for each command
        blk-merge: fix computing bio->bi_seg_front_size in case of single segment
        direct-io: Fix negative return from dio read beyond eof
        block: Always check queue limits for cloned requests
        lightnvm: missing nvm_lock acquire
        lightnvm: unconverted ppa returned in get_bb_tbl
        lightnvm: refactor and change vendor id for qemu
        lightnvm: do device max sectors boundary check first
        lightnvm: fix ioctl memory leaks
        lightnvm: free memory when gennvm register fails
        lightnvm: Simplify config when disabled
        Return EBUSY from BLKRRPART for mounted whole-dev fs
      2873d32f
    • Linus Torvalds's avatar
      Merge tag 'trace-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · c041f087
      Linus Torvalds authored
      Pull tracing fix from Steven Rostedt:
       "During the merge window I added a new file that is used to filter
        trace events on pids.  It filters all events where only tasks with
        their pid in that file exists.  It also handles the sched_switch and
        sched_wakeup trace events where the current task does not have its pid
        in the file, but the task either being switched to or awaken does.
      
        Unfortunately, I forgot about sched_wakeup_new and sched_waking.  Both
        of these tracepoints use the same class as the sched_wakeup
        tracepoint, and they too should be included in what gets filtered by
        the set_event_pid file"
      
      * tag 'trace-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
      c041f087
    • David S. Miller's avatar
      Merge tag 'mac80211-for-davem-2015-12-02' of... · e3c9b1ef
      David S. Miller authored
      Merge tag 'mac80211-for-davem-2015-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
      
      Johannes Berg says:
      
      ====================
      A small set of fixes for 4.4:
       * fix scanning in mac80211 to not actively scan radar
         channels (from Antonio)
       * fix uninitialized variable in remain-on-channel that
         could lead to treating frame TX as remain-on-channel
         and not sending the frame at all
       * remove NL80211_FEATURE_FULL_AP_CLIENT_STATE again, it
         was broken and needs more work, we'll enable it later
       * fix call_rcu() induced use-after-reset/free in mesh
         (that was suddenly causing issues in certain tests)
       * always request block-ack window size 64 as we found
         some APs will otherwise crash (really ...)
       * fix P2P-Device teardown sequence to avoid restarting
         with uninitialized data
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e3c9b1ef
    • Jiri Pirko's avatar
      mlxsw: core: Change BUG to WARN in hwmon code · 6b20da4d
      Jiri Pirko authored
      Better to just warn the user that something really odd is going on and
      continue to run.
      Suggested-by: default avatarOr Gerlitz <gerlitz.or@gmail.com>
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6b20da4d
    • Jérôme Pouiller's avatar
      net: phy: reset only targeted phy · cf18b778
      Jérôme Pouiller authored
      It is possible to address another chip on same MDIO bus. The case is
      correctly handled for media advertising. It is taken into account
      only if mii_data->phy_id == phydev->addr. However, this condition
      was missing for reset case.
      Signed-off-by: default avatarJérôme Pouiller <jezz@sysmic.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cf18b778
    • Stephen Boyd's avatar
      stmmac: ipq806x: Return error values instead of pointers · ead87637
      Stephen Boyd authored
      Typically we return error pointers when we want to use those
      pointers in the non-error case, but this function is just
      returning error pointers or NULL for success. Change the style to
      plain int to follow normal kernel coding styles.
      
      Cc: Joachim Eastwood <manabian@gmail.com>
      Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ead87637
    • Jon Paul Maloy's avatar
      tipc: fix node reference count bug · dc8d1eb3
      Jon Paul Maloy authored
      Commit 5405ff6e ("tipc: convert node lock to rwlock")
      introduced a bug to the node reference counter handling. When a
      message is successfully sent in the function tipc_node_xmit(),
      we return directly after releasing the node lock, instead of
      continuing and decrementing the node reference counter as we
      should do.
      
      This commit fixes this bug.
      Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dc8d1eb3
    • David S. Miller's avatar
      Merge branch 'mvneta-ethtool-autoneg' · b69e3c6f
      David S. Miller authored
      Stas Sergeev says:
      
      ====================
      mvneta: implement ethtool autonegotiation control
      
      These 2 patches add an ability to control the
      autonegotiation via ethtool. For example:
      
      ethtool -s eth0 autoneg off
      ethtool -s eth0 autoneg on
      
      This is needed if you want to connect the mvneta's MII
      to different switches or PHYs: the ones the do support
      the in-band status, and the ones that do not.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b69e3c6f
    • Stas Sergeev's avatar
      mvneta: implement ethtool autonegotiation control · 0c0744fc
      Stas Sergeev authored
      This patch allows to do
      ethtool -s eth0 autoneg off
      ethtool -s eth0 autoneg on
      to disable or enable autonegotiation at run-time.
      Without that functionality, the only way to control the autonegotiation
      is to modify the device tree.
      
      This is needed if you plan to use the same kernel with
      different ethernet switches, the ones that support the in-band
      status and the ones that not.
      
      CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
      CC: netdev@vger.kernel.org
      CC: linux-kernel@vger.kernel.org
      Signed-off-by: default avatarStas Sergeev <stsp@users.sourceforge.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0c0744fc
    • Stas Sergeev's avatar
      mvneta: consolidate autoneg enabling · aa5bc7a2
      Stas Sergeev authored
      This moves autoneg-related bit manipulations to the single place.
      
      CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
      CC: netdev@vger.kernel.org
      CC: linux-kernel@vger.kernel.org
      Signed-off-by: default avatarStas Sergeev <stsp@users.sourceforge.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      aa5bc7a2
    • Thierry Reding's avatar
      net: mv643xx: Use platform_register/unregister_drivers() · 3b5dde70
      Thierry Reding authored
      These new helpers simplify implementing multi-driver modules and
      properly handle failure to register one driver by unregistering all
      previously registered drivers.
      Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3b5dde70
    • Thierry Reding's avatar
      net: mpc52xx: Use platform_register/unregister_drivers() · 8c7d3972
      Thierry Reding authored
      These new helpers simplify implementing multi-driver modules and
      properly handle failure to register one driver by unregistering all
      previously registered drivers.
      Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8c7d3972
    • Thierry Reding's avatar
      net: bcm63xx: Use platform_register/unregister_drivers() · 0d1c744c
      Thierry Reding authored
      These new helpers simplify implementing multi-driver modules and
      properly handle failure to register one driver by unregistering all
      previously registered drivers.
      Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0d1c744c
    • Thierry Reding's avatar
      net: bfin_mac: Use platform_register/unregister_drivers() · 36b9ddd5
      Thierry Reding authored
      These new helpers simplify implementing multi-driver modules and
      properly handle failure to register one driver by unregistering all
      previously registered drivers.
      Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      36b9ddd5
    • Guillaume Nault's avatar
      pppox: use standard module auto-loading feature · 681b4d88
      Guillaume Nault authored
      * Register PF_PPPOX with pppox module rather than with pppoe,
          so that pppoe doesn't get loaded for any PF_PPPOX socket.
      
        * Register PX_PROTO_* with standard MODULE_ALIAS_NET_PF_PROTO()
          instead of using pppox's own naming scheme.
      
        * While there, add auto-loading feature for pptp.
      Signed-off-by: default avatarGuillaume Nault <g.nault@alphalink.fr>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      681b4d88
    • David S. Miller's avatar
      Merge branch 'bnxt_en-fixes' · c5ba5c8a
      David S. Miller authored
      Michael Chan says:
      
      ====================
      bnxt_en: set mac address and uc_list bug fixes.
      
      Fix ndo_set_mac_address() for PF and VF.
      Re-apply uc_list after chip reset.
      
      v2: Fix compile error if CONFIG_BNXT_SRIOV is not set.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c5ba5c8a
    • Michael Chan's avatar
      bnxt_en: Setup uc_list mac filters after resetting the chip. · b664f008
      Michael Chan authored
      Call bnxt_cfg_rx_mode() in bnxt_init_chip() to setup uc_list and
      mc_list mac address filters.  Before the patch, uc_list is not
      setup again after chip reset (such as ethtool ring size change)
      and macvlans don't work any more after that.
      
      Modify bnxt_cfg_rx_mode() to return error codes appropriately so
      that the init chip sequence can detect any failures.
      Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b664f008
    • Jeffrey Huang's avatar
      bnxt_en: enforce proper storing of MAC address · bdd4347b
      Jeffrey Huang authored
      For PF, the bp->pf.mac_addr always holds the permanent MAC
      addr assigned by the HW.  For VF, the bp->vf.mac_addr always
      holds the administrator assigned VF MAC addr. The random
      generated VF MAC addr should never get stored to bp->vf.mac_addr.
      This way, when the VF wants to change the MAC address, we can tell
      if the adminstrator has already set it and disallow the VF from
      changing it.
      
      v2: Fix compile error if CONFIG_BNXT_SRIOV is not set.
      Signed-off-by: default avatarJeffrey Huang <huangjw@broadcom.com>
      Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bdd4347b
    • Jeffrey Huang's avatar
      bnxt_en: Fixed incorrect implementation of ndo_set_mac_address · 1fc2cfd0
      Jeffrey Huang authored
      The existing ndo_set_mac_address only copies the new MAC addr
      and didn't set the new MAC addr to the HW. The correct way is
      to delete the existing default MAC filter from HW and add
      the new one. Because of RFS filters are also dependent on the
      default mac filter l2 context, the driver must go thru
      close_nic() to delete the default MAC and RFS filters, then
      open_nic() to set the default MAC address to HW.
      Signed-off-by: default avatarJeffrey Huang <huangjw@broadcom.com>
      Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1fc2cfd0
    • David S. Miller's avatar
      Merge branch 'vsock-virtio' · c402293b
      David S. Miller authored
      Stefan Hajnoczi says:
      
      ====================
      Add virtio transport for AF_VSOCK
      
      v2:
       * Rebased onto Linux v4.4-rc2
       * vhost: Refuse to assign reserved CIDs
       * vhost: Refuse guest CID if already in use
       * vhost: Only accept correctly addressed packets (no spoofing!)
       * vhost: Support flexible rx/tx descriptor layout
       * vhost: Add missing total_tx_buf decrement
       * virtio_transport: Fix total_tx_buf accounting
       * virtio_transport: Add virtio_transport global mutex to prevent races
       * common: Notify other side of SOCK_STREAM disconnect (fixes shutdown
         semantics)
       * common: Avoid recursive mutex_lock(tx_lock) for write_space (fixes deadlock)
       * common: Define VIRTIO_VSOCK_TYPE_STREAM/DGRAM hardware interface constants
       * common: Define VIRTIO_VSOCK_SHUTDOWN_RCV/SEND hardware interface constants
       * common: Fix peer_buf_alloc inheritance on child socket
      
      This patch series adds a virtio transport for AF_VSOCK (net/vmw_vsock/).
      AF_VSOCK is designed for communication between virtual machines and
      hypervisors.  It is currently only implemented for VMware's VMCI transport.
      
      This series implements the proposed virtio-vsock device specification from
      here:
      http://comments.gmane.org/gmane.comp.emulators.virtio.devel/855
      
      Most of the work was done by Asias He and Gerd Hoffmann a while back.  I have
      picked up the series again.
      
      The QEMU userspace changes are here:
      https://github.com/stefanha/qemu/commits/vsock
      
      Why virtio-vsock?
      -----------------
      Guest<->host communication is currently done over the virtio-serial device.
      This makes it hard to port sockets API-based applications and is limited to
      static ports.
      
      virtio-vsock uses the sockets API so that applications can rely on familiar
      SOCK_STREAM and SOCK_DGRAM semantics.  Applications on the host can easily
      connect to guest agents because the sockets API allows multiple connections to
      a listen socket (unlike virtio-serial).  This simplifies the guest<->host
      communication and eliminates the need for extra processes on the host to
      arbitrate virtio-serial ports.
      
      Overview
      --------
      This series adds 3 pieces:
      
      1. virtio_transport_common.ko - core virtio vsock code that uses vsock.ko
      
      2. virtio_transport.ko - guest driver
      
      3. drivers/vhost/vsock.ko - host driver
      
      Howto
      -----
      The following kernel options are needed:
        CONFIG_VSOCKETS=y
        CONFIG_VIRTIO_VSOCKETS=y
        CONFIG_VIRTIO_VSOCKETS_COMMON=y
        CONFIG_VHOST_VSOCK=m
      
      Launch QEMU as follows:
        # qemu ... -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3
      
      Guest and host can communicate via AF_VSOCK sockets.  The host's CID (address)
      is 2 and the guest is automatically assigned a CID (use VMADDR_CID_ANY (-1) to
      bind to it).
      
      Status
      ------
      There are a few design changes I'd like to make to the virtio-vsock device:
      
      1. The 3-way handshake isn't necessary over a reliable transport (virtqueue).
         Spoofing packets is also impossible so the security aspects of the 3-way
         handshake (including syn cookie) add nothing.  The next version will have a
         single operation to establish a connection.
      
      2. Credit-based flow control doesn't work for SOCK_DGRAM since multiple clients
         can transmit to the same listen socket.  There is no way for the clients to
         coordinate buffer space with each other fairly.  The next version will drop
         credit-based flow control for SOCK_DGRAM and only rely on best-effort
         delivery.  SOCK_STREAM still has guaranteed delivery.
      
      3. In the next version only the host will be able to establish connections
         (i.e. to connect to a guest agent).  This is for security reasons since
         there is currently no ability to provide host services only to certain
         guests.  This also matches how AF_VSOCK works on modern VMware hypervisors.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c402293b
    • Asias He's avatar
      VSOCK: Add Makefile and Kconfig · 8a2a2029
      Asias He authored
      Enable virtio-vsock and vhost-vsock.
      Signed-off-by: default avatarAsias He <asias@redhat.com>
      Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8a2a2029
    • Asias He's avatar
      VSOCK: Introduce vhost-vsock.ko · 98bb8928
      Asias He authored
      VM sockets vhost transport implementation. This module runs in host
      kernel.
      Signed-off-by: default avatarAsias He <asias@redhat.com>
      Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      98bb8928