1. 25 8月, 2012 3 次提交
    • B
      net: Set device operstate at registration time · 8f4cccbb
      Ben Hutchings 提交于
      The operstate of a device is initially IF_OPER_UNKNOWN and is updated
      asynchronously by linkwatch after each change of carrier state
      reported by the driver.  The default carrier state of a net device is
      on, and this will never be changed on drivers that do not support
      carrier detection, thus the operstate remains IF_OPER_UNKNOWN.
      
      For devices that do support carrier detection, the driver must set the
      carrier state to off initially, then poll the hardware state when the
      device is opened.  However, we must not activate linkwatch for a
      unregistered device, and commit b4730016 ('net: Do not fire linkwatch
      events until the device is registered.') ensured that we don't.  But
      this means that the operstate for many devices that support carrier
      detection remains IF_OPER_UNKNOWN when it should be IF_OPER_DOWN.
      
      The same issue exists with the dormant state.
      
      The proper initialisation sequence, avoiding a race with opening of
      the device, is:
      
              rtnl_lock();
              rc = register_netdevice(dev);
              if (rc)
                      goto out_unlock;
              netif_carrier_off(dev); /* or netif_dormant_on(dev) */
              rtnl_unlock();
      
      but it seems silly that this should have to be repeated in so many
      drivers.  Further, the operstate seen immediately after opening the
      device may still be IF_OPER_UNKNOWN due to the asynchronous nature of
      linkwatch.
      
      Commit 22604c86 ('net: Fix for initial link state in 2.6.28') attempted
      to fix this by setting the operstate synchronously, but it was
      reverted as it could lead to deadlock.
      
      This initialises the operstate synchronously at registration time
      only.
      Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8f4cccbb
    • T
      net/fsl: introduce Freescale 10G MDIO driver · 9f35a734
      Timur Tabi 提交于
      Similar to fsl_pq_mdio.c, this driver is for the 10G MDIO controller on
      Freescale Frame Manager Ethernet controllers.
      Signed-off-by: NTimur Tabi <timur@freescale.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9f35a734
    • N
      cls_cgroup: Allow classifier cgroups to have their classid reset to 0 · 3afa6d00
      Neil Horman 提交于
      The network classifier cgroup initalizes each cgroups instance classid value to
      0.  However, the sock_update_classid function only updates classid's in sockets
      if the tasks cgroup classid is not zero, and if it differs from the current
      classid.  The later check is to prevent cache line dirtying, but the former is
      detrimental, as it prevents resetting a classid for a cgroup to 0.  While this
      is not a common action, it has administrative usefulness (if the admin wants to
      disable classification of a certain group temporarily for instance).
      
      Easy fix, just remove the zero check.  Tested successfully by myself
      Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
      CC: "David S. Miller" <davem@davemloft.net>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3afa6d00
  2. 24 8月, 2012 3 次提交
  3. 23 8月, 2012 31 次提交
  4. 22 8月, 2012 3 次提交
    • L
      Merge branch 'akpm' (Andrew's patch-bomb) · 23dcfa61
      Linus Torvalds 提交于
      Merge fixes from Andrew Morton.
      
      Random drivers and some VM fixes.
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (17 commits)
        mm: compaction: Abort async compaction if locks are contended or taking too long
        mm: have order > 0 compaction start near a pageblock with free pages
        rapidio/tsi721: fix unused variable compiler warning
        rapidio/tsi721: fix inbound doorbell interrupt handling
        drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode
        mm: correct page->pfmemalloc to fix deactivate_slab regression
        drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes
        mm/compaction.c: fix deferring compaction mistake
        drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources
        string: do not export memweight() to userspace
        hugetlb: update hugetlbpage.txt
        checkpatch: add control statement test to SINGLE_STATEMENT_DO_WHILE_MACRO
        mm: hugetlbfs: correctly populate shared pmd
        cciss: fix incorrect scsi status reporting
        Documentation: update mount option in filesystem/vfat.txt
        mm: change nr_ptes BUG_ON to WARN_ON
        cs5535-clockevt: typo, it's MFGPT, not MFPGT
      23dcfa61
    • L
      Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · a484147a
      Linus Torvalds 提交于
      Pull media fixes from Mauro Carvalho Chehab:
       "For bug fixes, at soc_camera, si470x, uvcvideo, iguanaworks IR driver,
        radio_shark Kbuild fixes, and at the V4L2 core (radio fixes)."
      
      * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
        [media] media: soc_camera: don't clear pix->sizeimage in JPEG mode
        [media] media: mx2_camera: Fix clock handling for i.MX27
        [media] video: mx2_camera: Use clk_prepare_enable/clk_disable_unprepare
        [media] video: mx1_camera: Use clk_prepare_enable/clk_disable_unprepare
        [media] media: mx3_camera: buf_init() add buffer state check
        [media] radio-shark2: Only compile led support when CONFIG_LED_CLASS is set
        [media] radio-shark: Only compile led support when CONFIG_LED_CLASS is set
        [media] radio-shark*: Call cancel_work_sync from disconnect rather then release
        [media] radio-shark*: Remove work-around for dangling pointer in usb intfdata
        [media] Add USB dependency for IguanaWorks USB IR Transceiver
        [media] Add missing logging for rangelow/high of hwseek
        [media] VIDIOC_ENUM_FREQ_BANDS fix
        [media] mem2mem_testdev: fix querycap regression
        [media] si470x: v4l2-compliance fixes
        [media] DocBook: Remove a spurious character
        [media] uvcvideo: Reset the bytesused field when recycling an erroneous buffer
      a484147a
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 8f8ba75e
      Linus Torvalds 提交于
      Pull networking update from David Miller:
       "A couple weeks of bug fixing in there.  The largest chunk is all the
        broken crap Amerigo Wang found in the netpoll layer."
      
       1) netpoll and it's users has several serious bugs:
          a) uses GFP_KERNEL with locks held
          b) interfaces requiring interrupts disabled are called with them
             enabled
          c) and vice versa
          d) VLAN tag demuxing, as per all other RX packet input paths, is not
             applied
      
          All from Amerigo Wang.
      
       2) Hopefully cure the ipv4 mapped ipv6 address TCP early demux bugs for
          good, from Neal Cardwell.
      
       3) Unlike AF_UNIX, AF_PACKET sockets don't set a default credentials
          when the user doesn't specify one explicitly during sendmsg().
          Instead we attach an empty (zero) SCM credential block which is
          definitely not what we want.  Fix from Eric Dumazet.
      
       4) IPv6 illegally invokes netdevice notifiers with RCU lock held, fix
          from Ben Hutchings.
      
       5) inet_csk_route_child_sock() checks wrong inet options pointer, fix
          from Christoph Paasch.
      
       6) When AF_PACKET is used for transmit, packet loopback doesn't behave
          properly when a socket fanout is enabled, from Eric Leblond.
      
       7) On bluetooth l2cap channel create failure, we leak the socket, from
          Jaganath Kanakkassery.
      
       8) Fix all the netprio file handling bugs found by Al Viro, from John
          Fastabend.
      
       9) Several error return and NULL deref bug fixes in networking drivers
          from Julia Lawall.
      
      10) A large smattering of struct padding et al.  kernel memory leaks to
          userspace found of Mathias Krause.
      
      11) Conntrack expections in netfilter can access an uninitialized timer,
          fix from Pablo Neira Ayuso.
      
      12) Several netfilter SIP tracker bug fixes from Patrick McHardy.
      
      13) IPSEC ipv6 routes are not initialized correctly all the time,
          resulting in an OOPS in inet_putpeer().  Also from Patrick McHardy.
      
      14) Bridging does rcu_dereference() outside of RCU protected area, from
          Stephen Hemminger.
      
      15) Fix routing cache removal performance regression when looking up
          output routes that have a local destination.  From Zheng Yan.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits)
        af_netlink: force credentials passing [CVE-2012-3520]
        ipv4: fix ip header ident selection in __ip_make_skb()
        ipv4: Use newinet->inet_opt in inet_csk_route_child_sock()
        tcp: fix possible socket refcount problem
        net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child()
        net/core/dev.c: fix kernel-doc warning
        netconsole: remove a redundant netconsole_target_put()
        net: ipv6: fix oops in inet_putpeer()
        net/stmmac: fix issue of clk_get for Loongson1B.
        caif: Do not dereference NULL in chnl_recv_cb()
        af_packet: don't emit packet on orig fanout group
        drivers/net/irda: fix error return code
        drivers/net/wan/dscc4.c: fix error return code
        drivers/net/wimax/i2400m/fw.c: fix error return code
        smsc75xx: add missing entry to MAINTAINERS
        net: qmi_wwan: new devices: UML290 and K5006-Z
        net: sh_eth: Add eth support for R8A7779 device
        netdev/phy: skip disabled mdio-mux nodes
        dt: introduce for_each_available_child_of_node, of_get_next_available_child
        net: netprio: fix cgrp create and write priomap race
        ...
      8f8ba75e