1. 05 Sep, 2014 10 commits
  2. 03 Sep, 2014 1 commit
    • Michal Kazior's avatar
      mac80211: fix offloaded BA session traffic after hw restart · 4549cf2b
      Michal Kazior authored
      When starting an offloaded BA session it is
      unknown what starting sequence number should be
      used. Using last_seq worked in most cases except
      after hw restart.
      When hw restart is requested last_seq is
      (rightfully so) kept unmodified. This ended up
      with BA sessions being restarted with an aribtrary
      BA window values resulting in dropped frames until
      sequence numbers caught up.
      Instead of last_seq pick seqno of a first Rxed
      frame of a given BA session.
      This fixes stalled traffic after hw restart with
      offloaded BA sessions (currently only ath10k).
      Signed-off-by: default avatarMichal Kazior <michal.kazior@tieto.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
  3. 29 Aug, 2014 2 commits
    • Mika Westerberg's avatar
      net: rfkill: gpio: Add more Broadcom bluetooth ACPI IDs · d0616613
      Mika Westerberg authored
      This adds one more ACPI ID of a Broadcom bluetooth chip.
      Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    • Michal Kazior's avatar
      mac80211: fix chantype recalc warning · a00f4f6e
      Michal Kazior authored
      When a device driver is unloaded local->interfaces
      list is cleared. If there was more than 1
      interface running and connected (bound to a
      chanctx) then chantype recalc was called and it
      ended up with compat being NULL causing a call
      trace warning.
      Warn if compat becomes NULL as a result of
      incompatible bss_conf.chandef of interfaces bound
      to a given channel context only.
      The call trace looked like this:
       WARNING: CPU: 2 PID: 2594 at /devel/src/linux/net/mac80211/chan.c:557 ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0()
       Modules linked in: ath10k_pci(-) ath10k_core ath
       CPU: 2 PID: 2594 Comm: rmmod Tainted: G        W     3.16.0-rc1+ #150
       Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
        0000000000000009 ffff88001ea279c0 ffffffff818dfa93 0000000000000000
        ffff88001ea279f8 ffffffff810514a8 ffff88001ce09cd0 ffff88001e03cc58
        0000000000000000 ffff88001ce08840 ffff88001ce09cd0 ffff88001ea27a08
       Call Trace:
        [<ffffffff818dfa93>] dump_stack+0x4d/0x66
        [<ffffffff810514a8>] warn_slowpath_common+0x78/0xa0
        [<ffffffff81051585>] warn_slowpath_null+0x15/0x20
        [<ffffffff818a407d>] ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0
        [<ffffffff818a3dda>] ? ieee80211_recalc_chanctx_chantype+0x2a/0x2e0
        [<ffffffff818a4919>] ieee80211_assign_vif_chanctx+0x1a9/0x770
        [<ffffffff818a6220>] __ieee80211_vif_release_channel+0x70/0x130
        [<ffffffff818a6dd3>] ieee80211_vif_release_channel+0x43/0xb0
        [<ffffffff81885f4e>] ieee80211_stop_ap+0x21e/0x5a0
        [<ffffffff8184b9b5>] __cfg80211_stop_ap+0x85/0x520
        [<ffffffff8181c188>] __cfg80211_leave+0x68/0x120
        [<ffffffff8181c268>] cfg80211_leave+0x28/0x40
        [<ffffffff8181c5f3>] cfg80211_netdev_notifier_call+0x373/0x6b0
        [<ffffffff8107f965>] notifier_call_chain+0x55/0x110
        [<ffffffff8107fa41>] raw_notifier_call_chain+0x11/0x20
        [<ffffffff816a8dc0>] call_netdevice_notifiers_info+0x30/0x60
        [<ffffffff816a8eb9>] __dev_close_many+0x59/0xf0
        [<ffffffff816a9021>] dev_close_many+0x81/0x120
        [<ffffffff816aa1c5>] rollback_registered_many+0x115/0x2a0
        [<ffffffff816aa3a6>] unregister_netdevice_many+0x16/0xa0
        [<ffffffff8187d841>] ieee80211_remove_interfaces+0x121/0x1b0
        [<ffffffff8185e0e6>] ieee80211_unregister_hw+0x56/0x110
        [<ffffffffa0011ac4>] ath10k_mac_unregister+0x14/0x60 [ath10k_core]
        [<ffffffffa0014fe7>] ath10k_core_unregister+0x27/0x40 [ath10k_core]
        [<ffffffffa003b1f4>] ath10k_pci_remove+0x44/0xa0 [ath10k_pci]
        [<ffffffff81373138>] pci_device_remove+0x28/0x60
        [<ffffffff814cb534>] __device_release_driver+0x64/0xd0
        [<ffffffff814cbcc8>] driver_detach+0xb8/0xc0
        [<ffffffff814cb23a>] bus_remove_driver+0x4a/0xb0
        [<ffffffff814cc697>] driver_unregister+0x27/0x50
      Signed-off-by: default avatarMichal Kazior <michal.kazior@tieto.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
  4. 27 Aug, 2014 1 commit
  5. 26 Aug, 2014 10 commits
  6. 15 Aug, 2014 4 commits
    • Eliad Peller's avatar
      mac80211: disable 40MHz support in case of 20MHz AP · 53b954ee
      Eliad Peller authored
      If the AP only advertises support for 20MHz (in the
      ht operation ie), disable 40MHz and VHT.
      This can improve interoperability with APs that
      don't like stations exceeding their own
      advertised capabilities.
      Signed-off-by: default avatarEliad Peller <eliadx.peller@intel.com>
      Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    • Johannes Berg's avatar
      mac80211: don't duplicate station QoS capability data · a74a8c84
      Johannes Berg authored
      We currently track the QoS capability twice: for all peer stations
      in the WLAN_STA_WME flag, and for any clients associated to an AP
      interface separately for drivers in the sta->sta.wme field.
      Remove the WLAN_STA_WME flag and track the capability only in the
      driver-visible field, getting rid of the limitation that the field
      is only valid in AP mode.
      Reviewed-by: default avatarArik Nemtsov <arik@wizery.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · c9d26423
      Linus Torvalds authored
      Pull more ACPI and power management updates from Rafael Wysocki:
       "These are a couple of regression fixes, cpuidle menu governor
        optimizations, fixes for ACPI proccessor and battery drivers,
        hibernation fix to avoid problems related to the e820 memory map,
        fixes for a few cpufreq drivers and a new version of the suspend
        profiling tool analyze_suspend.py.
         - Fix for an ACPI-based device hotplug regression introduced in 3.14
           that causes a kernel panic to trigger when memory hot-remove is
           attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen
         - Fix for a cpufreq regression introduced in 3.16 that triggers a
           "sleeping function called from invalid context" bug in
           dev_pm_opp_init_cpufreq_table() from Stephen Boyd
         - ACPI battery driver fix for a warning message added in 3.16 that
           prints silly stuff sometimes from Mariusz Ceier
         - Hibernation fix for safer handling of mismatches in the 820 memory
           map between the configurations during image creation and during the
           subsequent restore from Chun-Yi Lee
         - ACPI processor driver fix to handle CPU hotplug notifications
           correctly during system suspend/resume from Lan Tianyu
         - Series of four cpuidle menu governor cleanups that also should
           speed it up a bit from Mel Gorman
         - Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little
           cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus
           Pargmann and Uwe Kleine-König
         - Version 3.0 of the analyze_suspend.py suspend profiling tool from
           Todd E Brandt"
      * tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI / battery: Fix warning message in acpi_battery_get_state()
        PM / tools: analyze_suspend.py: update to v3.0
        cpufreq: arm_big_little: fix module license spec
        cpufreq: speedstep-smi: fix decimal printf specifiers
        ACPI / hotplug: Check scan handlers in acpi_scan_hot_remove()
        cpufreq: OPP: Avoid sleeping while atomic
        cpufreq: cpu0: Do not print error message when deferring
        cpufreq: integrator: Use set_cpus_allowed_ptr
        PM / hibernate: avoid unsafe pages in e820 reserved regions
        ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events
        cpuidle: menu: Lookup CPU runqueues less
        cpuidle: menu: Call nr_iowait_cpu less times
        cpuidle: menu: Use ktime_to_us instead of reinventing the wheel
        cpuidle: menu: Use shifts when calculating averages where possible
    • Linus Torvalds's avatar
      Merge tag 'pci-v3.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · a11c5c9e
      Linus Torvalds authored
      Pull DEFINE_PCI_DEVICE_TABLE removal from Bjorn Helgaas:
       "Part two of the PCI changes for v3.17:
          - Remove DEFINE_PCI_DEVICE_TABLE macro use (Benoit Taine)
        It's a mechanical change that removes uses of the
        DEFINE_PCI_DEVICE_TABLE macro.  I waited until later in the merge
        window to reduce conflicts, but it's possible you'll still see a few"
      * tag 'pci-v3.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use
  7. 14 Aug, 2014 12 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 179c0ac6
      Linus Torvalds authored
      Pull Sparc fixes from David Miller:
       "Hook up the memfd syscall, and properly claim all PCI resources
        discovered when building the PCI device tree"
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc: Hook up memfd_create system call.
        sparc64: Properly claim resources as each PCI bus is probed.
        sparc64: Skip bogus PCI bridge ranges.
        sparc64: Expand PCI bridge probing debug logging.
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · ad15afb8
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "I'm sending this out, in particular, to get the iwlwifi fix
         1) Fix build due to missing include in i40e driver, from Lucas
         2) Memory leak in openvswitch port allocation, from Chirstoph Jaeger.
         3) Check DMA mapping errors in myri10ge, from Stanislaw Gruszka.
         4) Fix various deadlock scenerios in sunvnet driver, from Sowmini
         5) Fix cxgb4i build failures with incompatible Kconfig settings of
            the driver vs ipv6, from Anish Bhatt.
         6) Fix generation of ACK packet timestamps in the presence of TSO
            which will be split up, from Willem de Bruijn.
         7) Don't enable sched scan in iwlwifi driver, it causes firmware
            crashes in some revisions.  From Emmanuel Grumbach.
         8) Revert a macvlan simplification that causes crashes.
         9) Handle RTT calculations properly in the presence of repair'd SKBs,
            from Andrey Vagin.
        10) SIT tunnel lookup uses wrong device index in compares, from
            Shmulik Ladkani.
        11) Handle MTU reductions in TCP properly for ipv4 mapped ipv6
            sockets, from Neal Cardwell.
        12) Add missing annotations in rhashtable code, from Thomas Graf.
        13) Fix false interpretation of two RTOs as being from the same TCP
            loss event in the FRTO code, from Neal Cardwell"
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (42 commits)
        netlink: Annotate RCU locking for seq_file walker
        rhashtable: fix annotations for rht_for_each_entry_rcu()
        rhashtable: unexport and make rht_obj() static
        rhashtable: RCU annotations for next pointers
        tcp: fix ssthresh and undo for consecutive short FRTO episodes
        tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic
        tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()
        sit: Fix ipip6_tunnel_lookup device matching criteria
        net: ethernet: ibm: ehea: Remove duplicate object from Makefile
        net: xgene: Check negative return value of xgene_enet_get_ring_size()
        tcp: don't use timestamp from repaired skb-s to calculate RTT (v2)
        net: xilinx: Remove .owner field for driver
        Revert "macvlan: simplify the structure port"
        iwlwifi: mvm: disable scheduled scan to prevent firmware crash
        xen-netback: remove loop waiting function
        xen-netback: don't stop dealloc kthread too early
        xen-netback: move NAPI add/remove calls
        xen-netback: fix debugfs entry creation
        xen-netback: fix debugfs write length check
        net-timestamp: fix missing tcp fragmentation cases
    • David S. Miller's avatar
      Merge tag 'master-2014-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless · a61ebdfd
      David S. Miller authored
      John W. Linville says:
      pull request: wireless 2014-08-14
      Please pull this batch of fixes intended for the 3.17 stream...
      Arend van Spriel brings two brcmfmac fixes, one which fixes a memory
      leak and one which corrects some merge damage.
      Emmanuel Grumbach fixes Linus's iwlwifi firmware-related log spam.
      Rickard Strandqvist does some proper NULL termination after a call
      to strncpy.
      Ronald Wahl corrects a carl9170 problem with sending URBs with the
      wrong endpoint type (resulting in log spam).
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Thomas Graf's avatar
      netlink: Annotate RCU locking for seq_file walker · 9ce12eb1
      Thomas Graf authored
      Silences the following sparse warnings:
      net/netlink/af_netlink.c:2926:21: warning: context imbalance in 'netlink_seq_start' - wrong count at exit
      net/netlink/af_netlink.c:2972:13: warning: context imbalance in 'netlink_seq_stop' - unexpected unlock
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Thomas Graf's avatar
      rhashtable: fix annotations for rht_for_each_entry_rcu() · 93f56081
      Thomas Graf authored
      Call rcu_deference_raw() directly from within rht_for_each_entry_rcu()
      as list_for_each_entry_rcu() does.
      Fixes the following sparse warnings:
      net/netlink/af_netlink.c:2906:25:    expected struct rhash_head const *__mptr
      net/netlink/af_netlink.c:2906:25:    got struct rhash_head [noderef] <asn:4>*<noident>
      Fixes: e341694e
       ("netlink: Convert netlink_lookup() to use RCU protected hash table")
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Thomas Graf's avatar
      rhashtable: unexport and make rht_obj() static · c91eee56
      Thomas Graf authored
      No need to export rht_obj(), all inner to outer object translations
      occur internally. It was intended to be used with rht_for_each() which
      now primarily serves as the iterator for rhashtable_remove_pprev() to
      effectively flush and free the full table.
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Thomas Graf's avatar
      rhashtable: RCU annotations for next pointers · 5300fdcb
      Thomas Graf authored
      Properly annotate next pointers as access is RCU protected in
      the lookup path.
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Neal Cardwell's avatar
      tcp: fix ssthresh and undo for consecutive short FRTO episodes · 0c9ab092
      Neal Cardwell authored
      Fix TCP FRTO logic so that it always notices when snd_una advances,
      indicating that any RTO after that point will be a new and distinct
      loss episode.
      Previously there was a very specific sequence that could cause FRTO to
      fail to notice a new loss episode had started:
      (1) RTO timer fires, enter FRTO and retransmit packet 1 in write queue
      (2) receiver ACKs packet 1
      (3) FRTO sends 2 more packets
      (4) RTO timer fires again (should start a new loss episode)
      The problem was in step (3) above, where tcp_process_loss() returned
      early (in the spot marked "Step 2.b"), so that it never got to the
      logic to clear icsk_retransmits. Thus icsk_retransmits stayed
      non-zero. Thus in step (4) tcp_enter_loss() would see the non-zero
      icsk_retransmits, decide that this RTO is not a new episode, and
      decide not to cut ssthresh and remember the current cwnd and ssthresh
      for undo.
      There were two main consequences to the bug that we have
      observed. First, ssthresh was not decreased in step (4). Second, when
      there was a series of such FRTO (1-4) sequences that happened to be
      followed by an FRTO undo, we would restore the cwnd and ssthresh from
      before the entire series started (instead of the cwnd and ssthresh
      from before the most recent RTO). This could result in cwnd and
      ssthresh being restored to values much bigger than the proper values.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Fixes: e33099f9
       ("tcp: implement RFC5682 F-RTO")
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Hannes Frederic Sowa's avatar
      tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic · a26552af
      Hannes Frederic Sowa authored
      tcp_tw_recycle heavily relies on tcp timestamps to build a per-host
      ordering of incoming connections and teardowns without the need to
      hold state on a specific quadruple for TCP_TIMEWAIT_LEN, but only for
      the last measured RTO. To do so, we keep the last seen timestamp in a
      per-host indexed data structure and verify if the incoming timestamp
      in a connection request is strictly greater than the saved one during
      last connection teardown. Thus we can verify later on that no old data
      packets will be accepted by the new connection.
      During moving a socket to time-wait state we already verify if timestamps
      where seen on a connection. Only if that was the case we let the
      time-wait socket expire after the RTO, otherwise normal TCP_TIMEWAIT_LEN
      will be used. But we don't verify this on incoming SYN packets. If a
      connection teardown was less than TCP_PAWS_MSL seconds in the past we
      cannot guarantee to not accept data packets from an old connection if
      no timestamps are present. We should drop this SYN packet. This patch
      closes this loophole.
      Please note, this patch does not make tcp_tw_recycle in any way more
      usable but only adds another safety check:
      Sporadic drops of SYN packets because of reordering in the network or
      in the socket backlog queues can happen. Users behing NAT trying to
      connect to a tcp_tw_recycle enabled server can get caught in blackholes
      and their connection requests may regullary get dropped because hosts
      behind an address translator don't have synchronized tcp timestamp clocks.
      tcp_tw_recycle cannot work if peers don't have tcp timestamps enabled.
      In general, use of tcp_tw_recycle is disadvised.
      Cc: Eric Dumazet <eric.dumazet@gmail.com>
      Cc: Florian Westphal <fw@strlen.de>
      Signed-off-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Neal Cardwell's avatar
      tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced() · 4fab9071
      Neal Cardwell authored
      Make sure we use the correct address-family-specific function for
      handling MTU reductions from within tcp_release_cb().
      Previously AF_INET6 sockets were incorrectly always using the IPv6
      code path when sometimes they were handling IPv4 traffic and thus had
      an IPv4 dst.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Diagnosed-by: default avatarWillem de Bruijn <willemb@google.com>
      Fixes: 563d34d0
       ("tcp: dont drop MTU reduction indications")
      Reviewed-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Shmulik Ladkani's avatar
      sit: Fix ipip6_tunnel_lookup device matching criteria · bc8fc7b8
      Shmulik Ladkani authored
      As of 4fddbf5d
       ("sit: strictly restrict incoming traffic to tunnel link device"),
      when looking up a tunnel, tunnel's underlying interface (t->parms.link)
      is verified to match incoming traffic's ingress device.
      However the comparison was incorrectly based on skb->dev->iflink.
      Instead, dev->ifindex should be used, which correctly represents the
      interface from which the IP stack hands the ipip6 packets.
      This allows setting up sit tunnels bound to vlan interfaces (otherwise
      incoming ipip6 traffic on the vlan interface was dropped due to
      ipip6_tunnel_lookup match failure).
      Signed-off-by: default avatarShmulik Ladkani <shmulik.ladkani@gmail.com>
      Acked-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Andreas Ruprecht's avatar
      net: ethernet: ibm: ehea: Remove duplicate object from Makefile · 3b3e0ea8
      Andreas Ruprecht authored
      In the Makefile, ehea_phyp.o is included twice in the list of
      object files compile into ehea.o.
      This change removes one instance.
      Signed-off-by: default avatarAndreas Ruprecht <rupran@einserver.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>