| .. SPDX-License-Identifier: GPL-2.0+ |
| |
| ======================================================== |
| Linux Driver for the Pensando(R) Ethernet adapter family |
| ======================================================== |
| |
| Pensando Linux Ethernet driver. |
| Copyright(c) 2019 Pensando Systems, Inc |
| |
| Contents |
| ======== |
| |
| - Identifying the Adapter |
| - Enabling the driver |
| - Configuring the driver |
| - Statistics |
| - Support |
| |
| Identifying the Adapter |
| ======================= |
| |
| To find if one or more Pensando PCI Ethernet devices are installed on the |
| host, check for the PCI devices:: |
| |
| $ lspci -d 1dd8: |
| b5:00.0 Ethernet controller: Device 1dd8:1002 |
| b6:00.0 Ethernet controller: Device 1dd8:1002 |
| |
| If such devices are listed as above, then the ionic.ko driver should find |
| and configure them for use. There should be log entries in the kernel |
| messages such as these:: |
| |
| $ dmesg | grep ionic |
| 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 maximum 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:: |
| |
| netdev@vger.kernel.org |
| |
| For more specific support needs, please use the Pensando driver support |
| email:: |
| |
| drivers@pensando.io |
