1. 04 Sep, 2009 32 commits
  2. 03 Sep, 2009 8 commits
    • Eric Dumazet's avatar
      net: Remove debugging code · 55f9d678
      Eric Dumazet authored
      Remove a debugging aid I accidently left in previous 'cleanup' patch
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      55f9d678
    • Eric Dumazet's avatar
      vlan: enable multiqueue xmits · 2f8bc32b
      Eric Dumazet authored
      vlan_dev_hard_start_xmit() & vlan_dev_hwaccel_hard_start_xmit()
      select txqueue number 0, instead of using index provided by
      skb_get_queue_mapping().
      
      This is not correct after commit 2e59af3d
      [vlan: multiqueue vlan device] because
      txq->tx_packets  & txq->tx_bytes changes are performed on
      a single location, and not the right locking.
      
      Fix is to take the appropriate struct netdev_queue pointer
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2f8bc32b
    • Eric Dumazet's avatar
      net: net/core/dev.c cleanups · d1b19dff
      Eric Dumazet authored
      Pure style cleanup patch before surgery :)
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d1b19dff
    • Karl Hiramoto's avatar
      atm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue()... · 137742cf
      Karl Hiramoto authored
      atm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue() when we can send packets again.
      
      This patch removes the call to dev_kfree_skb() when the atm device is busy.
      Calling dev_kfree_skb() causes heavy packet loss then the device is under
      heavy load, the more correct behavior should be to stop the upper layers,
      then when the lower device can queue packets again wake the upper layers.
      Signed-off-by: default avatarKarl Hiramoto <karl@hiramoto.org>
      Signed-off-by: default avatarChas Williams <chas@cmf.nrl.navy.mil>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      137742cf
    • Uwe Kleine-König's avatar
      fec: don't enable irqs in hard irq context · 81538e74
      Uwe Kleine-König authored
      fec_enet_mii, fec_enet_rx and fec_enet_tx are both only called by
      fec_enet_interrupt in interrupt context.  So they must not use
      spin_lock_irq/spin_unlock_irq.
      
      This fixes:
      	WARNING: at kernel/lockdep.c:2140 trace_hardirqs_on_caller+0x130/0x194()
      	...
      Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
      Cc: Greg Ungerer <gerg@uclinux.org>
      Cc: Ben Hutchings <ben@decadent.org.uk>
      Cc: Patrick McHardy <kaber@trash.net>
      Cc: Sascha Hauer <s.hauer@pengutronix.de>
      Cc: Matt Waddel <Matt.Waddel@freescale.com>
      Cc: netdev@vger.kernel.org
      Cc: Tim Sander <tim01@vlsi.informatik.tu-darmstadt.de>
      Acked-by: default avatarGreg Ungerer <gerg@uclinux.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      81538e74
    • Uwe Kleine-König's avatar
      fec: fix recursive locking of mii_lock · 84177a20
      Uwe Kleine-König authored
      mii_discover_phy is only called by fec_enet_mii (via mip->mii_func).  So
      &fep->mii_lock is already held and mii_discover_phy must not call
      mii_queue which locks &fep->mii_lock, too.
      
      This was noticed by lockdep:
      
      	=============================================
      	[ INFO: possible recursive locking detected ]
      	2.6.31-rc8-00038-g37d0892c #109
      	---------------------------------------------
      	swapper/1 is trying to acquire lock:
      	 (&fep->mii_lock){-.....}, at: [<c01569f8>] mii_queue+0x2c/0xcc
      
      	but task is already holding lock:
      	 (&fep->mii_lock){-.....}, at: [<c0156328>] fec_enet_interrupt+0x78/0x460
      
      	other info that might help us debug this:
      	2 locks held by swapper/1:
      	 #0:  (rtnl_mutex){+.+.+.}, at: [<c0183534>] rtnl_lock+0x18/0x20
      	 #1:  (&fep->mii_lock){-.....}, at: [<c0156328>] fec_enet_interrupt+0x78/0x460
      
      	stack backtrace:
      	Backtrace:
      	[<c00226fc>] (dump_backtrace+0x0/0x108) from [<c01eac14>] (dump_stack+0x18/0x1c)
      	 r6:c781d118 r5:c03e41d8 r4:00000001
      	[<c01eabfc>] (dump_stack+0x0/0x1c) from [<c005bae4>] (__lock_acquire+0x1a20/0x1a88)
      	[<c005a0c4>] (__lock_acquire+0x0/0x1a88) from [<c005bbac>] (lock_acquire+0x60/0x74)
      	[<c005bb4c>] (lock_acquire+0x0/0x74) from [<c01edda8>] (_spin_lock_irqsave+0x54/0x68)
      	 r7:60000093 r6:c01569f8 r5:c785e468 r4:00000000
      	[<c01edd54>] (_spin_lock_irqsave+0x0/0x68) from [<c01569f8>] (mii_queue+0x2c/0xcc)
      	 r7:c785e468 r6:c0156b24 r5:600a0000 r4:c785e000
      	[<c01569cc>] (mii_queue+0x0/0xcc) from [<c0156b78>] (mii_discover_phy+0x54/0xa8)
      	 r8:00000002 r7:00000032 r6:c785e000 r5:c785e360 r4:c785e000
      	[<c0156b24>] (mii_discover_phy+0x0/0xa8) from [<c0156354>] (fec_enet_interrupt+0xa4/0x460)
      	 r5:c785e360 r4:c077a170
      	[<c01562b0>] (fec_enet_interrupt+0x0/0x460) from [<c0066674>] (handle_IRQ_event+0x48/0x120)
      	[<c006662c>] (handle_IRQ_event+0x0/0x120) from [<c0068438>] (handle_level_irq+0x94/0x11c)
      	...
      Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
      Cc: Greg Ungerer <gerg@uclinux.org>
      Cc: Ben Hutchings <ben@decadent.org.uk>
      Cc: Patrick McHardy <kaber@trash.net>
      Cc: Sascha Hauer <s.hauer@pengutronix.de>
      Cc: Matt Waddel <Matt.Waddel@freescale.com>
      Cc: netdev@vger.kernel.org
      Cc: Tim Sander <tim01@vlsi.informatik.tu-darmstadt.de>
      Acked-by: default avatarGreg Ungerer <gerg@uclinux.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      84177a20
    • Ralf Baechle's avatar
      NET: Fix possible corruption in bpqether driver · 3eb00275
      Ralf Baechle authored
      The bpq ether driver is modifying the data art of the skb by first
      dropping the KISS byte (a command byte for the radio) then prepending the
      length + 4 of the remaining AX.25 packet to be transmitted as a little
      endian 16-bit number.  If the high byte of the length has a different
      value than the dropped KISS byte users of clones of the skb may observe
      this as corruption.  This was observed with by running listen(8) -a which
      uses a packet socket which clones transmit packets.  The corruption will
      then typically be displayed for as a KISS "TX Delay" command for AX.25
      packets in the range of 252..508 bytes or any other KISS command for
      yet larger packets.
      
      Fixed by using skb_cow to create a private copy should the skb be cloned.
      Using skb_cow also allows us to cleanup the old logic to ensure sufficient
      headroom in the skb.
      
      While at it, replace a return of 0 from bpq_xmit with the proper constant
      NETDEV_TX_OK which is now being used everywhere else in this function.
      
      Affected: all 2.2, 2.4 and 2.6 kernels.
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Reported-by: default avatarJann Traschewski <jann@gmx.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3eb00275
    • roel kluin's avatar
      WARNING: some request_irq() failures ignored in el2_open() · ab08999d
      roel kluin authored
      Request_irq() may fail in different ways, handle accordingly.
      Signed-off-by: default avatarRoel Kluin <roel.kluin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ab08999d