diff options
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-net | 8 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-net-cdc_ncm | 149 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-net-queues | 79 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-net-statistics | 201 |
4 files changed, 437 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-net b/Documentation/ABI/testing/sysfs-class-net index d922060e455..416c5d59f52 100644 --- a/Documentation/ABI/testing/sysfs-class-net +++ b/Documentation/ABI/testing/sysfs-class-net @@ -169,6 +169,14 @@ Description: "unknown", "notpresent", "down", "lowerlayerdown", "testing", "dormant", "up". +What: /sys/class/net/<iface>/phys_port_id +Date: July 2013 +KernelVersion: 3.12 +Contact: netdev@vger.kernel.org +Description: + Indicates the interface unique physical port identifier within + the NIC, as a string. + What: /sys/class/net/<iface>/speed Date: October 2009 KernelVersion: 2.6.33 diff --git a/Documentation/ABI/testing/sysfs-class-net-cdc_ncm b/Documentation/ABI/testing/sysfs-class-net-cdc_ncm new file mode 100644 index 00000000000..5cedf72df35 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-net-cdc_ncm @@ -0,0 +1,149 @@ +What: /sys/class/net/<iface>/cdc_ncm/min_tx_pkt +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + The driver will pad NCM Transfer Blocks (NTBs) longer + than this to tx_max, allowing the device to receive + tx_max sized frames with no terminating short + packet. NTBs shorter than this limit are transmitted + as-is, without any padding, and are terminated with a + short USB packet. + + Padding to tx_max allows the driver to transmit NTBs + back-to-back without any interleaving short USB + packets. This reduces the number of short packet + interrupts in the device, and represents a tradeoff + between USB bus bandwidth and device DMA optimization. + + Set to 0 to pad all frames. Set greater than tx_max to + disable all padding. + +What: /sys/class/net/<iface>/cdc_ncm/rx_max +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + The maximum NTB size for RX. Cannot exceed the + maximum value supported by the device. Must allow at + least one max sized datagram plus headers. + + The actual limits are device dependent. See + dwNtbInMaxSize. + + Note: Some devices will silently ignore changes to + this value, resulting in oversized NTBs and + corresponding framing errors. + +What: /sys/class/net/<iface>/cdc_ncm/tx_max +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + The maximum NTB size for TX. Cannot exceed the + maximum value supported by the device. Must allow at + least one max sized datagram plus headers. + + The actual limits are device dependent. See + dwNtbOutMaxSize. + +What: /sys/class/net/<iface>/cdc_ncm/tx_timer_usecs +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Datagram aggregation timeout in µs. The driver will + wait up to 3 times this timeout for more datagrams to + aggregate before transmitting an NTB frame. + + Valid range: 5 to 4000000 + + Set to 0 to disable aggregation. + +The following read-only attributes all represent fields of the +structure defined in section 6.2.1 "GetNtbParameters" of "Universal +Serial Bus Communications Class Subclass Specifications for Network +Control Model Devices" (CDC NCM), Revision 1.0 (Errata 1), November +24, 2010 from USB Implementers Forum, Inc. The descriptions are +quoted from table 6-3 of CDC NCM: "NTB Parameter Structure". + +What: /sys/class/net/<iface>/cdc_ncm/bmNtbFormatsSupported +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Bit 0: 16-bit NTB supported (set to 1) + Bit 1: 32-bit NTB supported + Bits 2 – 15: reserved (reset to zero; must be ignored by host) + +What: /sys/class/net/<iface>/cdc_ncm/dwNtbInMaxSize +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + IN NTB Maximum Size in bytes + +What: /sys/class/net/<iface>/cdc_ncm/wNdpInDivisor +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Divisor used for IN NTB Datagram payload alignment + +What: /sys/class/net/<iface>/cdc_ncm/wNdpInPayloadRemainder +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Remainder used to align input datagram payload within + the NTB: (Payload Offset) mod (wNdpInDivisor) = + wNdpInPayloadRemainder + +What: /sys/class/net/<iface>/cdc_ncm/wNdpInAlignment +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + NDP alignment modulus for NTBs on the IN pipe. Shall + be a power of 2, and shall be at least 4. + +What: /sys/class/net/<iface>/cdc_ncm/dwNtbOutMaxSize +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + OUT NTB Maximum Size + +What: /sys/class/net/<iface>/cdc_ncm/wNdpOutDivisor +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + OUT NTB Datagram alignment modulus + +What: /sys/class/net/<iface>/cdc_ncm/wNdpOutPayloadRemainder +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Remainder used to align output datagram payload + offsets within the NTB: Padding, shall be transmitted + as zero by function, and ignored by host. (Payload + Offset) mod (wNdpOutDivisor) = wNdpOutPayloadRemainder + +What: /sys/class/net/<iface>/cdc_ncm/wNdpOutAlignment +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + NDP alignment modulus for use in NTBs on the OUT + pipe. Shall be a power of 2, and shall be at least 4. + +What: /sys/class/net/<iface>/cdc_ncm/wNtbOutMaxDatagrams +Date: May 2014 +KernelVersion: 3.16 +Contact: Bjørn Mork <bjorn@mork.no> +Description: + Maximum number of datagrams that the host may pack + into a single OUT NTB. Zero means that the device + imposes no limit. diff --git a/Documentation/ABI/testing/sysfs-class-net-queues b/Documentation/ABI/testing/sysfs-class-net-queues new file mode 100644 index 00000000000..5e9aeb91d35 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-net-queues @@ -0,0 +1,79 @@ +What: /sys/class/<iface>/queues/rx-<queue>/rps_cpus +Date: March 2010 +KernelVersion: 2.6.35 +Contact: netdev@vger.kernel.org +Description: + Mask of the CPU(s) currently enabled to participate into the + Receive Packet Steering packet processing flow for this + network device queue. Possible values depend on the number + of available CPU(s) in the system. + +What: /sys/class/<iface>/queues/rx-<queue>/rps_flow_cnt +Date: April 2010 +KernelVersion: 2.6.35 +Contact: netdev@vger.kernel.org +Description: + Number of Receive Packet Steering flows being currently + processed by this particular network device receive queue. + +What: /sys/class/<iface>/queues/tx-<queue>/tx_timeout +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the number of transmit timeout events seen by this + network interface transmit queue. + +What: /sys/class/<iface>/queues/tx-<queue>/xps_cpus +Date: November 2010 +KernelVersion: 2.6.38 +Contact: netdev@vger.kernel.org +Description: + Mask of the CPU(s) currently enabled to participate into the + Transmit Packet Steering packet processing flow for this + network device transmit queue. Possible vaules depend on the + number of available CPU(s) in the system. + +What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/hold_time +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the hold time in milliseconds to measure the slack + of this particular network device transmit queue. + Default value is 1000. + +What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/inflight +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the number of bytes (objects) in flight on this + network device transmit queue. + +What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the current limit of bytes allowed to be queued + on this network device transmit queue. This value is clamped + to be within the bounds defined by limit_max and limit_min. + +What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit_max +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the absolute maximum limit of bytes allowed to be + queued on this network device transmit queue. See + include/linux/dynamic_queue_limits.h for the default value. + +What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit_min +Date: November 2011 +KernelVersion: 3.3 +Contact: netdev@vger.kernel.org +Description: + Indicates the absolute minimum limit of bytes allowed to be + queued on this network device transmit queue. Default value is + 0. diff --git a/Documentation/ABI/testing/sysfs-class-net-statistics b/Documentation/ABI/testing/sysfs-class-net-statistics new file mode 100644 index 00000000000..397118de7b5 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-net-statistics @@ -0,0 +1,201 @@ +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. |