net: sysfs: document /sys/class/net/statistics/*
Document the network device statistics counter that are exposed as sysfs attributes. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Florian Fainelli
David S. Miller
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6044f97006
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What: /sys/class/<iface>/statistics/collisions
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of collisions seen by this network device.
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This value might not be relevant with all MAC layers.
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What: /sys/class/<iface>/statistics/multicast
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of multicast packets received by this
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network device.
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What: /sys/class/<iface>/statistics/rx_bytes
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of bytes received by this network device.
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See the network driver for the exact meaning of when this
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value is incremented.
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What: /sys/class/<iface>/statistics/rx_compressed
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of compressed packets received by this
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network device. This value might only be relevant for interfaces
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that support packet compression (e.g: PPP).
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What: /sys/class/<iface>/statistics/rx_crc_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets received with a CRC (FCS) error
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by this network device. Note that the specific meaning might
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depend on the MAC layer used by the interface.
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What: /sys/class/<iface>/statistics/rx_dropped
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets received by the network device
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but dropped, that are not forwarded to the upper layers for
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packet processing. See the network driver for the exact
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meaning of this value.
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What: /sys/class/<iface>/statistics/rx_fifo_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of receive FIFO errors seen by this
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network device. See the network driver for the exact
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meaning of this value.
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What: /sys/class/<iface>/statistics/rx_frame_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of received frames with error, such as
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alignment errors. Note that the specific meaning depends on
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on the MAC layer protocol used. See the network driver for
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the exact meaning of this value.
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What: /sys/class/<iface>/statistics/rx_length_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of received error packet with a length
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error, oversized or undersized. See the network driver for the
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exact meaning of this value.
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What: /sys/class/<iface>/statistics/rx_missed_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of received packets that have been missed
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due to lack of capacity in the receive side. See the network
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driver for the exact meaning of this value.
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What: /sys/class/<iface>/statistics/rx_over_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of received packets that are oversized
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compared to what the network device is configured to accept
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(e.g: larger than MTU). See the network driver for the exact
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meaning of this value.
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What: /sys/class/<iface>/statistics/rx_packets
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the total number of good packets received by this
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network device.
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What: /sys/class/<iface>/statistics/tx_aborted_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets that have been aborted
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during transmission by a network device (e.g: because of
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a medium collision). See the network driver for the exact
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meaning of this value.
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What: /sys/class/<iface>/statistics/tx_bytes
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of bytes transmitted by a network
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device. See the network driver for the exact meaning of this
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value, in particular whether this accounts for all successfully
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transmitted packets or all packets that have been queued for
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transmission.
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What: /sys/class/<iface>/statistics/tx_carrier_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets that could not be transmitted
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because of carrier errors (e.g: physical link down). See the
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network driver for the exact meaning of this value.
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What: /sys/class/<iface>/statistics/tx_compressed
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of transmitted compressed packets. Note
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this might only be relevant for devices that support
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compression (e.g: PPP).
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What: /sys/class/<iface>/statistics/tx_dropped
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets dropped during transmission.
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See the driver for the exact reasons as to why the packets were
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dropped.
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What: /sys/class/<iface>/statistics/tx_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets in error during transmission by
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a network device. See the driver for the exact reasons as to
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why the packets were dropped.
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What: /sys/class/<iface>/statistics/tx_fifo_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets having caused a transmit
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FIFO error. See the driver for the exact reasons as to why the
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packets were dropped.
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What: /sys/class/<iface>/statistics/tx_heartbeat_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets transmitted that have been
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reported as heartbeat errors. See the driver for the exact
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reasons as to why the packets were dropped.
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What: /sys/class/<iface>/statistics/tx_packets
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets transmitted by a network
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device. See the driver for whether this reports the number of all
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attempted or successful transmissions.
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What: /sys/class/<iface>/statistics/tx_window_errors
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Date: April 2005
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KernelVersion: 2.6.12
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Contact: netdev@vger.kernel.org
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Description:
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Indicates the number of packets not successfully transmitted
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due to a window collision. The specific meaning depends on the
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MAC layer used. On Ethernet this is usually used to report
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late collisions errors.
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