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Message-Id: <20200512005936.14490-11-snelson@pensando.io> Date: Mon, 11 May 2020 17:59:36 -0700 From: Shannon Nelson <snelson@...sando.io> To: netdev@...r.kernel.org, davem@...emloft.net Cc: Shannon Nelson <snelson@...sando.io> Subject: [PATCH net-next 10/10] ionic: update doc files Update the basic doc file with some configuration hints and a little bit of stats information. Signed-off-by: Shannon Nelson <snelson@...sando.io> --- .../device_drivers/pensando/ionic.rst | 231 +++++++++++++++++- 1 file changed, 230 insertions(+), 1 deletion(-) diff --git a/Documentation/networking/device_drivers/pensando/ionic.rst b/Documentation/networking/device_drivers/pensando/ionic.rst index c17d680cf334..0eabbc347d6c 100644 --- a/Documentation/networking/device_drivers/pensando/ionic.rst +++ b/Documentation/networking/device_drivers/pensando/ionic.rst @@ -11,6 +11,9 @@ Contents ======== - Identifying the Adapter +- Enabling the driver +- Configuring the driver +- Statistics - Support Identifying the Adapter @@ -28,12 +31,238 @@ and configure them for use. There should be log entries in the kernel messages such as these:: $ dmesg | grep ionic - ionic Pensando Ethernet NIC Driver, ver 0.15.0-k + ionic 0000:b5:00.0: 126.016 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x16 link) ionic 0000:b5:00.0 enp181s0: renamed from eth0 + ionic 0000:b5:00.0 enp181s0: Link up - 100 Gbps + ionic 0000:b6:00.0: 126.016 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x16 link) ionic 0000:b6:00.0 enp182s0: renamed from eth0 + ionic 0000:b6:00.0 enp182s0: Link up - 100 Gbps + +Driver and firmware version information can be gathered with either of +ethtool or devlink tools:: + + $ ethtool -i enp181s0 + driver: ionic + version: 5.7.0 + firmware-version: 1.8.0-28 + ... + + $ devlink dev info pci/0000:b5:00.0 + pci/0000:b5:00.0: + driver ionic + serial_number FLM18420073 + versions: + fixed: + asic.id 0x0 + asic.rev 0x0 + running: + fw 1.8.0-28 + +See Documentation/networking/devlink/ionic.rst for more information +on the devlink dev info data. + +Enabling the driver +=================== + +The driver is enabled via the standard kernel configuration system, +using the make command:: + + make oldconfig/menuconfig/etc. + +The driver is located in the menu structure at: + + -> Device Drivers + -> Network device support (NETDEVICES [=y]) + -> Ethernet driver support + -> Pensando devices + -> Pensando Ethernet IONIC Support + +Configuring the Driver +====================== + +MTU +--- + +Jumbo frame support is available with a maximim size of 9194 bytes. + +Interrupt coalescing +-------------------- + +Interrupt coalescing can be configured by changing the rx-usecs value with +the "ethtool -C" command. The rx-usecs range is 0-190. The tx-usecs value +reflects the rx-usecs value as they are tied together on the same interrupt. + +SR-IOV +------ + +Minimal SR-IOV support is currently offered and can be enabled by setting +the sysfs 'sriov_numvfs' value, if supported by your particular firmware +configuration. + +Statistics +========== + +Basic hardware stats +-------------------- + +The commands ``netstat -i``, ``ip -s link show``, and ``ifconfig`` show +a limited set of statistics taken directly from firmware. For example:: + + $ ip -s link show enp181s0 + 7: enp181s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 + link/ether 00:ae:cd:00:07:68 brd ff:ff:ff:ff:ff:ff + RX: bytes packets errors dropped overrun mcast + 414 5 0 0 0 0 + TX: bytes packets errors dropped carrier collsns + 1384 18 0 0 0 0 + +ethtool -S +---------- + +The statistics shown from the ``ethtool -S`` command includes a combination of +driver counters and firmware counters, including port and queue specific values. +The driver values are counters computed by the driver, and the firmware values +are gathered by the firmware from the port hardware and passed through the +driver with no further interpretation. + +Driver port specific:: + + tx_packets: 12 + tx_bytes: 964 + rx_packets: 5 + rx_bytes: 414 + tx_tso: 0 + tx_tso_bytes: 0 + tx_csum_none: 12 + tx_csum: 0 + rx_csum_none: 0 + rx_csum_complete: 3 + rx_csum_error: 0 + +Driver queue specific:: + + tx_0_pkts: 3 + tx_0_bytes: 294 + tx_0_clean: 3 + tx_0_dma_map_err: 0 + tx_0_linearize: 0 + tx_0_frags: 0 + tx_0_tso: 0 + tx_0_tso_bytes: 0 + tx_0_csum_none: 3 + tx_0_csum: 0 + tx_0_vlan_inserted: 0 + rx_0_pkts: 2 + rx_0_bytes: 120 + rx_0_dma_map_err: 0 + rx_0_alloc_err: 0 + rx_0_csum_none: 0 + rx_0_csum_complete: 0 + rx_0_csum_error: 0 + rx_0_dropped: 0 + rx_0_vlan_stripped: 0 + +Firmware port specific:: + + hw_tx_dropped: 0 + hw_rx_dropped: 0 + hw_rx_over_errors: 0 + hw_rx_missed_errors: 0 + hw_tx_aborted_errors: 0 + frames_rx_ok: 15 + frames_rx_all: 15 + frames_rx_bad_fcs: 0 + frames_rx_bad_all: 0 + octets_rx_ok: 1290 + octets_rx_all: 1290 + frames_rx_unicast: 10 + frames_rx_multicast: 5 + frames_rx_broadcast: 0 + frames_rx_pause: 0 + frames_rx_bad_length: 0 + frames_rx_undersized: 0 + frames_rx_oversized: 0 + frames_rx_fragments: 0 + frames_rx_jabber: 0 + frames_rx_pripause: 0 + frames_rx_stomped_crc: 0 + frames_rx_too_long: 0 + frames_rx_vlan_good: 3 + frames_rx_dropped: 0 + frames_rx_less_than_64b: 0 + frames_rx_64b: 4 + frames_rx_65b_127b: 11 + frames_rx_128b_255b: 0 + frames_rx_256b_511b: 0 + frames_rx_512b_1023b: 0 + frames_rx_1024b_1518b: 0 + frames_rx_1519b_2047b: 0 + frames_rx_2048b_4095b: 0 + frames_rx_4096b_8191b: 0 + frames_rx_8192b_9215b: 0 + frames_rx_other: 0 + frames_tx_ok: 31 + frames_tx_all: 31 + frames_tx_bad: 0 + octets_tx_ok: 2614 + octets_tx_total: 2614 + frames_tx_unicast: 8 + frames_tx_multicast: 21 + frames_tx_broadcast: 2 + frames_tx_pause: 0 + frames_tx_pripause: 0 + frames_tx_vlan: 0 + frames_tx_less_than_64b: 0 + frames_tx_64b: 4 + frames_tx_65b_127b: 27 + frames_tx_128b_255b: 0 + frames_tx_256b_511b: 0 + frames_tx_512b_1023b: 0 + frames_tx_1024b_1518b: 0 + frames_tx_1519b_2047b: 0 + frames_tx_2048b_4095b: 0 + frames_tx_4096b_8191b: 0 + frames_tx_8192b_9215b: 0 + frames_tx_other: 0 + frames_tx_pri_0: 0 + frames_tx_pri_1: 0 + frames_tx_pri_2: 0 + frames_tx_pri_3: 0 + frames_tx_pri_4: 0 + frames_tx_pri_5: 0 + frames_tx_pri_6: 0 + frames_tx_pri_7: 0 + frames_rx_pri_0: 0 + frames_rx_pri_1: 0 + frames_rx_pri_2: 0 + frames_rx_pri_3: 0 + frames_rx_pri_4: 0 + frames_rx_pri_5: 0 + frames_rx_pri_6: 0 + frames_rx_pri_7: 0 + tx_pripause_0_1us_count: 0 + tx_pripause_1_1us_count: 0 + tx_pripause_2_1us_count: 0 + tx_pripause_3_1us_count: 0 + tx_pripause_4_1us_count: 0 + tx_pripause_5_1us_count: 0 + tx_pripause_6_1us_count: 0 + tx_pripause_7_1us_count: 0 + rx_pripause_0_1us_count: 0 + rx_pripause_1_1us_count: 0 + rx_pripause_2_1us_count: 0 + rx_pripause_3_1us_count: 0 + rx_pripause_4_1us_count: 0 + rx_pripause_5_1us_count: 0 + rx_pripause_6_1us_count: 0 + rx_pripause_7_1us_count: 0 + rx_pause_1us_count: 0 + frames_tx_truncated: 0 + Support ======= + For general Linux networking support, please use the netdev mailing list, which is monitored by Pensando personnel:: -- 2.17.1
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