1. 07 Oct, 2009 30 commits
  2. 05 Oct, 2009 10 commits
    • Andy Gospodarek's avatar
      net: export device speed and duplex via sysfs · d519e17e
      Andy Gospodarek authored
      
      
      This patch exports the link-speed (in Mbps) and duplex of an interface
      via sysfs.  This eliminates the need to use ethtool just to check the
      link-speed.  Not requiring 'ethtool' and not relying on the SIOCETHTOOL
      ioctl should be helpful in an embedded environment where space is at a
      premium as well.
      
      NOTE: This patch also intentionally allows non-root users to check the link
      speed and duplex -- something not possible with ethtool.
      
      Here's some sample output:
      
      # cat /sys/class/net/eth0/speed
      100
      # cat /sys/class/net/eth0/duplex
      half
      # ethtool eth0
      Settings for eth0:
              Supported ports: [ TP ]
              Supported link modes:   10baseT/Half 10baseT/Full
                                      100baseT/Half 100baseT/Full
                                      1000baseT/Half 1000baseT/Full
              Supports auto-negotiation: Yes
              Advertised link modes:  Not reported
              Advertised auto-negotiation: No
              Speed: 100Mb/s
              Duplex: Half
              Port: Twisted Pair
              PHYAD: 1
              Transceiver: internal
              Auto-negotiation: off
              Supports Wake-on: g
              Wake-on: g
              Current message level: 0x000000ff (255)
              Link detected: yes
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d519e17e
    • Marcel Holtmann's avatar
      cfg80211: assign device type in netdev notifier callback · 053a93dd
      Marcel Holtmann authored
      
      
      Instead of having to modify every non-mac80211 for device type assignment,
      do this inside the netdev notifier callback of cfg80211. So all drivers
      that integrate with cfg80211 will export a proper device type.
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      053a93dd
    • Johannes Berg's avatar
      net: introduce NETDEV_POST_INIT notifier · 7ffbe3fd
      Johannes Berg authored
      
      
      For various purposes including a wireless extensions
      bugfix, we need to hook into the netdev creation before
      before netdev_register_kobject(). This will also ease
      doing the dev type assignment that Marcel was working
      on for cfg80211 drivers w/o touching them all.
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7ffbe3fd
    • Marcel Holtmann's avatar
      usbnet: Set device type for wlan and wwan devices · 225794f8
      Marcel Holtmann authored
      
      
      For usbnet devices with FLAG_WLAN and FLAG_WWAN set the proper device
      type so that uevent contains the correct value. This then allows an easy
      identification of the actual underlying technology of the Ethernet device.
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      225794f8
    • Marcel Holtmann's avatar
      usbnet: Use wwan%d interface name for mobile broadband devices · e1e499ee
      Marcel Holtmann authored
      
      
      Add support for usbnet based devices like CDC-Ether to indicate that they
      are actually mobile broadband devices. In that case use wwan%d as default
      interface name.
      Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e1e499ee
    • Eric Dumazet's avatar
      tunnels: Optimize tx path · 0bfbedb1
      Eric Dumazet authored
      
      
      We currently dirty a cache line to update tunnel device stats
      (tx_packets/tx_bytes). We better use the txq->tx_bytes/tx_packets
      counters that already are present in cpu cache, in the cache
      line shared with txq->_xmit_lock
      
      This patch extends IPTUNNEL_XMIT() macro to use txq pointer
      provided by the caller.
      
      Also &tunnel->dev->stats can be replaced by &dev->stats
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0bfbedb1
    • Stephen Hemminger's avatar
      ipv4: fib table algorithm performance improvement · 16c6cf8b
      Stephen Hemminger authored
      
      
      The FIB algorithim for IPV4 is set at compile time, but kernel goes through
      the overhead of function call indirection at runtime. Save some
      cycles by turning the indirect calls to direct calls to either
      hash or trie code.
      Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      16c6cf8b
    • Neil Horman's avatar
      af_packet: add interframe drop cmsg (v6) · 97775007
      Neil Horman authored
      
      
      Add Ancilliary data to better represent loss information
      
      I've had a few requests recently to provide more detail regarding frame loss
      during an AF_PACKET packet capture session.  Specifically the requestors want to
      see where in a packet sequence frames were lost, i.e. they want to see that 40
      frames were lost between frames 302 and 303 in a packet capture file.  In order
      to do this we need:
      
      1) The kernel to export this data to user space
      2) The applications to make use of it
      
      This patch addresses item (1).  It does this by doing the following:
      
      A) Anytime we drop a frame for which we would increment po->stats.tp_drops, we
      also no increment a stats called po->stats.tp_gap.
      
      B) Every time we successfully enqueue a frame to sk_receive_queue, we record the
      value of po->stats.tp_gap in skb->mark.  skb->cb would nominally be the place to
      record this, but since all the space there is used up, we're overloading
      skb->mark.  Its safe to do since any enqueued packet is guaranteed to be
      unshared at this point, and skb->mark isn't used for anything else in the rx
      path to the application.  After we record tp_gap in the skb, we zero
      po->stats.tp_gap.  This allows us to keep a counter of the number of frames lost
      between any two enqueued packets
      
      C) When the application goes to dequeue a frame from the packet socket, we look
      at skb->mark for that frame.  If it is non-zero, we add a cmsg chunk to the
      msghdr of level SOL_PACKET and type PACKET_GAPDATA.  Its a 32 bit integer that
      represents the number of frames lost between this packet and the last previous
      frame received.
      
      Note there is a chance that if there is frame loss after a receive, and then the
      socket is closed, some gap data might be lost.  This is covered by the use of
      the PACKET_AUXDATA socket option, which gives total loss data.  With a bit of
      math, the final gap can be determined that way.
      
      I've tested this patch myself, and it works well.
      Signed-off-by: default avatarNeil Horman <nhorman@tuxdriver.com>
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      
       include/linux/if_packet.h |    2 ++
       net/packet/af_packet.c    |   33 +++++++++++++++++++++++++++++++++
       2 files changed, 35 insertions(+)
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      97775007
    • chaithrika@ti.com's avatar
      TI DaVinci EMAC: Minor macro related updates · 69ef9694
      chaithrika@ti.com authored
      
      
      Use BIT for macro definitions wherever possible, remove
      unused and redundant macros.
      Signed-off-by: default avatarChaithrika U S <chaithrika@ti.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      69ef9694
    • Eric Dumazet's avatar
      pktgen: Avoid dirtying skb->users when txq is full · 0835acfe
      Eric Dumazet authored
      
      
      We can avoid two atomic ops on skb->users if packet is not going to be
      sent to the device (because hardware txqueue is full)
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Acked-by: default avatarStephen Hemminger <shemminger@vyatta.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0835acfe