1. 13 Sep, 2014 6 commits
    • Vlad Yasevich's avatar
      bridge: Check if vlan filtering is enabled only once. · 20adfa1a
      Vlad Yasevich authored
      The bridge code checks if vlan filtering is enabled on both
      ingress and egress.   When the state flip happens, it
      is possible for the bridge to currently be forwarding packets
      and forwarding behavior becomes non-deterministic.  Bridge
      may drop packets on some interfaces, but not others.
      
      This patch solves this by caching the filtered state of the
      packet into skb_cb on ingress.  The skb_cb is guaranteed to
      not be over-written between the time packet entres bridge
      forwarding path and the time it leaves it.  On egress, we
      can then check the cached state to see if we need to
      apply filtering information.
      Signed-off-by: default avatarVladislav Yasevich <vyasevic@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      20adfa1a
    • Nikolay Aleksandrov's avatar
      bonding: fix div by zero while enslaving and transmitting · 9a72c2da
      Nikolay Aleksandrov authored
      The problem is that the slave is first linked and slave_cnt is
      incremented afterwards leading to a div by zero in the modes that use it
      as a modulus. What happens is that in bond_start_xmit()
      bond_has_slaves() is used to evaluate further transmission and it becomes
      true after the slave is linked in, but when slave_cnt is used in the xmit
      path it is still 0, so fetch it once and transmit based on that. Since
      it is used only in round-robin and XOR modes, the fix is only for them.
      Thanks to Eric Dumazet for pointing out the fault in my first try to fix
      this.
      
      Call trace (took it out of net-next kernel, but it's the same with net):
      [46934.330038] divide error: 0000 [#1] SMP
      [46934.330041] Modules linked in: bonding(O) 9p fscache
      snd_hda_codec_generic crct10dif_pclmul
      [46934.330041] bond0: Enslaving eth1 as an active interface with an up
      link
      [46934.330051]  ppdev joydev crc32_pclmul crc32c_intel 9pnet_virtio
      ghash_clmulni_intel snd_hda_intel 9pnet snd_hda_controller parport_pc
      serio_raw pcspkr snd_hda_codec parport virtio_balloon virtio_console
      snd_hwdep snd_pcm pvpanic i2c_piix4 snd_timer i2ccore snd soundcore
      virtio_blk virtio_net virtio_pci virtio_ring virtio ata_generic
      pata_acpi floppy [last unloaded: bonding]
      [46934.330053] CPU: 1 PID: 3382 Comm: ping Tainted: G           O
      3.17.0-rc4+ #27
      [46934.330053] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
      [46934.330054] task: ffff88005aebf2c0 ti: ffff88005b728000 task.ti:
      ffff88005b728000
      [46934.330059] RIP: 0010:[<ffffffffa0198c33>]  [<ffffffffa0198c33>]
      bond_start_xmit+0x1c3/0x450 [bonding]
      [46934.330060] RSP: 0018:ffff88005b72b7f8  EFLAGS: 00010246
      [46934.330060] RAX: 0000000000000679 RBX: ffff88004b077000 RCX:
      000000000000002a
      [46934.330061] RDX: 0000000000000000 RSI: ffff88004b3f0500 RDI:
      ffff88004b077940
      [46934.330061] RBP: ffff88005b72b830 R08: 00000000000000c0 R09:
      ffff88004a83e000
      [46934.330062] R10: 000000000000ffff R11: ffff88004b1f12c0 R12:
      ffff88004b3f0500
      [46934.330062] R13: ffff88004b3f0500 R14: 000000000000002a R15:
      ffff88004b077940
      [46934.330063] FS:  00007fbd91a4c740(0000) GS:ffff88005f080000(0000)
      knlGS:0000000000000000
      [46934.330064] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [46934.330064] CR2: 00007f803a8bb000 CR3: 000000004b2c9000 CR4:
      00000000000406e0
      [46934.330069] Stack:
      [46934.330071]  ffffffff811e6169 00000000e772fa05 ffff88004b077000
      ffff88004b3f0500
      [46934.330072]  ffffffff81d17d18 000000000000002a 0000000000000000
      ffff88005b72b8a0
      [46934.330073]  ffffffff81620108 ffffffff8161fe0e ffff88005b72b8c4
      ffff88005b302000
      [46934.330073] Call Trace:
      [46934.330077]  [<ffffffff811e6169>] ?
      __kmalloc_node_track_caller+0x119/0x300
      [46934.330084]  [<ffffffff81620108>] dev_hard_start_xmit+0x188/0x410
      [46934.330086]  [<ffffffff8161fe0e>] ? harmonize_features+0x2e/0x90
      [46934.330088]  [<ffffffff81620b06>] __dev_queue_xmit+0x456/0x590
      [46934.330089]  [<ffffffff81620c50>] dev_queue_xmit+0x10/0x20
      [46934.330090]  [<ffffffff8168f022>] arp_xmit+0x22/0x60
      [46934.330091]  [<ffffffff8168f090>] arp_send.part.16+0x30/0x40
      [46934.330092]  [<ffffffff8168f1e5>] arp_solicit+0x115/0x2b0
      [46934.330094]  [<ffffffff8160b5d7>] ? copy_skb_header+0x17/0xa0
      [46934.330096]  [<ffffffff8162875a>] neigh_probe+0x4a/0x70
      [46934.330097]  [<ffffffff8162979c>] __neigh_event_send+0xac/0x230
      [46934.330098]  [<ffffffff8162a00b>] neigh_resolve_output+0x13b/0x220
      [46934.330100]  [<ffffffff8165f120>] ? ip_forward_options+0x1c0/0x1c0
      [46934.330101]  [<ffffffff81660478>] ip_finish_output+0x1f8/0x860
      [46934.330102]  [<ffffffff81661f08>] ip_output+0x58/0x90
      [46934.330103]  [<ffffffff81661602>] ? __ip_local_out+0xa2/0xb0
      [46934.330104]  [<ffffffff81661640>] ip_local_out_sk+0x30/0x40
      [46934.330105]  [<ffffffff81662a66>] ip_send_skb+0x16/0x50
      [46934.330106]  [<ffffffff81662ad3>] ip_push_pending_frames+0x33/0x40
      [46934.330107]  [<ffffffff8168854c>] raw_sendmsg+0x88c/0xa30
      [46934.330110]  [<ffffffff81612b31>] ? skb_recv_datagram+0x41/0x60
      [46934.330111]  [<ffffffff816875a9>] ? raw_recvmsg+0xa9/0x1f0
      [46934.330113]  [<ffffffff816978d4>] inet_sendmsg+0x74/0xc0
      [46934.330114]  [<ffffffff81697a9b>] ? inet_recvmsg+0x8b/0xb0
      [46934.330115] bond0: Adding slave eth2
      [46934.330116]  [<ffffffff8160357c>] sock_sendmsg+0x9c/0xe0
      [46934.330118]  [<ffffffff81603248>] ?
      move_addr_to_kernel.part.20+0x28/0x80
      [46934.330121]  [<ffffffff811b4477>] ? might_fault+0x47/0x50
      [46934.330122]  [<ffffffff816039b9>] ___sys_sendmsg+0x3a9/0x3c0
      [46934.330125]  [<ffffffff8144a14a>] ? n_tty_write+0x3aa/0x530
      [46934.330127]  [<ffffffff810d1ae4>] ? __wake_up+0x44/0x50
      [46934.330129]  [<ffffffff81242b38>] ? fsnotify+0x238/0x310
      [46934.330130]  [<ffffffff816048a1>] __sys_sendmsg+0x51/0x90
      [46934.330131]  [<ffffffff816048f2>] SyS_sendmsg+0x12/0x20
      [46934.330134]  [<ffffffff81738b29>] system_call_fastpath+0x16/0x1b
      [46934.330144] Code: 48 8b 10 4c 89 ee 4c 89 ff e8 aa bc ff ff 31 c0 e9
      1a ff ff ff 0f 1f 00 4c 89 ee 4c 89 ff e8 65 fb ff ff 31 d2 4c 89 ee 4c
      89 ff <f7> b3 64 09 00 00 e8 02 bd ff ff 31 c0 e9 f2 fe ff ff 0f 1f 00
      [46934.330146] RIP  [<ffffffffa0198c33>] bond_start_xmit+0x1c3/0x450
      [bonding]
      [46934.330146]  RSP <ffff88005b72b7f8>
      
      CC: Eric Dumazet <eric.dumazet@gmail.com>
      CC: Andy Gospodarek <andy@greyhouse.net>
      CC: Jay Vosburgh <j.vosburgh@gmail.com>
      CC: Veaceslav Falico <vfalico@gmail.com>
      Fixes: 278b2083 ("bonding: initial RCU conversion")
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9a72c2da
    • David S. Miller's avatar
      Merge branch 'r8169-net' · 638898f1
      David S. Miller authored
      Hayes Wang says:
      
      ====================
      r8169: fix rx vlan
      
      There are two issues for hw rx vlan. The patches are
      used to fix them.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      638898f1
    • hayeswang's avatar
      r8169: fix setting rx vlan · 36d8e825
      hayeswang authored
      The setting should depend on the new features not the current one.
      Signed-off-by: default avatarHayes Wang <hayeswang@realtek.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      36d8e825
    • hayeswang's avatar
      r8169: fix the default setting of rx vlan · 48c20407
      hayeswang authored
      If the parameter "features" of __rtl8169_set_features() is equal to
      dev->features, the variable "changed" is alwayes 0, and nothing would
      be changed.
      Signed-off-by: default avatarHayes Wang <hayeswang@realtek.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      48c20407
    • Mugunthan V N's avatar
      drivers: net: cpsw: dual_emac: in suspend/resume bring down/up all the netdev · 618073e3
      Mugunthan V N authored
      During suspend and resume in Dual EMAC, second port is not working as in
      suspend/resume only the first slave netdev is closed and opened. So bring
      down and up all the interfaces that are up during suspend/resume.
      Signed-off-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
      Tested-by: default avatarNishanth Menon <nm@ti.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      618073e3
  2. 12 Sep, 2014 7 commits
  3. 11 Sep, 2014 2 commits
    • Sujith Manoharan's avatar
      Revert "ath9k: Calculate sleep duration" · ae0fd635
      Sujith Manoharan authored
      This reverts commit 09ebb810.
      
      ath9k_hw_set_sta_beacon_timers() configures AR_TIM_PERIOD with
      the beacon interval. Before this commit, the sleepduration was
      never greater than the beacon interval. But now, the behavior
      has changed. For example, with an AP that uses a beacon interval of 100:
      
      ath: phy9: next beacon 61128704
      ath: phy9: beacon period 204800
      ath: phy9: DTIM period 204800
      
      If the sleepduration is calculated based on the listen time, then
      the bmiss threshold should also be changed since the HW would
      be in sleep state for a longer time, but that is not done currently.
      
      To avoid configuring a higher beacon interval based on the sleepduration,
      revert to the original behavior. Power consumption is not a
      problem since PS is disabled in ath9k anyway.
      
      Cc: stable@vger.kernel.org
      Cc: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
      Signed-off-by: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      ae0fd635
    • David Jander's avatar
      can: flexcan: avoid calling usleep_range from interrupt context · 8badd65e
      David Jander authored
      Apparently can_restart() runs from a (timer-) interrupt and can call
      flexcan_chip_[en|dis]able(), so avoid using usleep_range()
      Signed-off-by: default avatarDavid Jander <david@protonic.nl>
      Cc: linux-stable <stable@vger.kernel.org>
      Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
      8badd65e
  4. 10 Sep, 2014 11 commits
  5. 09 Sep, 2014 2 commits
  6. 08 Sep, 2014 12 commits