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