From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- .../device_drivers/ethernet/neterion/s2io.rst | 196 +++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 Documentation/networking/device_drivers/ethernet/neterion/s2io.rst (limited to 'Documentation/networking/device_drivers/ethernet/neterion/s2io.rst') diff --git a/Documentation/networking/device_drivers/ethernet/neterion/s2io.rst b/Documentation/networking/device_drivers/ethernet/neterion/s2io.rst new file mode 100644 index 000000000..c5673ec45 --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/neterion/s2io.rst @@ -0,0 +1,196 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================================================= +Neterion's (Formerly S2io) Xframe I/II PCI-X 10GbE driver +========================================================= + +Release notes for Neterion's (Formerly S2io) Xframe I/II PCI-X 10GbE driver. + +.. Contents + - 1. Introduction + - 2. Identifying the adapter/interface + - 3. Features supported + - 4. Command line parameters + - 5. Performance suggestions + - 6. Available Downloads + + +1. Introduction +=============== +This Linux driver supports Neterion's Xframe I PCI-X 1.0 and +Xframe II PCI-X 2.0 adapters. It supports several features +such as jumbo frames, MSI/MSI-X, checksum offloads, TSO, UFO and so on. +See below for complete list of features. + +All features are supported for both IPv4 and IPv6. + +2. Identifying the adapter/interface +==================================== + +a. Insert the adapter(s) in your system. +b. Build and load driver:: + + # insmod s2io.ko + +c. View log messages:: + + # dmesg | tail -40 + +You will see messages similar to:: + + eth3: Neterion Xframe I 10GbE adapter (rev 3), Version 2.0.9.1, Intr type INTA + eth4: Neterion Xframe II 10GbE adapter (rev 2), Version 2.0.9.1, Intr type INTA + eth4: Device is on 64 bit 133MHz PCIX(M1) bus + +The above messages identify the adapter type(Xframe I/II), adapter revision, +driver version, interface name(eth3, eth4), Interrupt type(INTA, MSI, MSI-X). +In case of Xframe II, the PCI/PCI-X bus width and frequency are displayed +as well. + +To associate an interface with a physical adapter use "ethtool -p ". +The corresponding adapter's LED will blink multiple times. + +3. Features supported +===================== +a. Jumbo frames. Xframe I/II supports MTU up to 9600 bytes, + modifiable using ip command. + +b. Offloads. Supports checksum offload(TCP/UDP/IP) on transmit + and receive, TSO. + +c. Multi-buffer receive mode. Scattering of packet across multiple + buffers. Currently driver supports 2-buffer mode which yields + significant performance improvement on certain platforms(SGI Altix, + IBM xSeries). + +d. MSI/MSI-X. Can be enabled on platforms which support this feature + (IA64, Xeon) resulting in noticeable performance improvement(up to 7% + on certain platforms). + +e. Statistics. Comprehensive MAC-level and software statistics displayed + using "ethtool -S" option. + +f. Multi-FIFO/Ring. Supports up to 8 transmit queues and receive rings, + with multiple steering options. + +4. Command line parameters +========================== + +a. tx_fifo_num + Number of transmit queues + +Valid range: 1-8 + +Default: 1 + +b. rx_ring_num + Number of receive rings + +Valid range: 1-8 + +Default: 1 + +c. tx_fifo_len + Size of each transmit queue + +Valid range: Total length of all queues should not exceed 8192 + +Default: 4096 + +d. rx_ring_sz + Size of each receive ring(in 4K blocks) + +Valid range: Limited by memory on system + +Default: 30 + +e. intr_type + Specifies interrupt type. Possible values 0(INTA), 2(MSI-X) + +Valid values: 0, 2 + +Default: 2 + +5. Performance suggestions +========================== + +General: + +a. Set MTU to maximum(9000 for switch setup, 9600 in back-to-back configuration) +b. Set TCP windows size to optimal value. + +For instance, for MTU=1500 a value of 210K has been observed to result in +good performance:: + + # sysctl -w net.ipv4.tcp_rmem="210000 210000 210000" + # sysctl -w net.ipv4.tcp_wmem="210000 210000 210000" + +For MTU=9000, TCP window size of 10 MB is recommended:: + + # sysctl -w net.ipv4.tcp_rmem="10000000 10000000 10000000" + # sysctl -w net.ipv4.tcp_wmem="10000000 10000000 10000000" + +Transmit performance: + +a. By default, the driver respects BIOS settings for PCI bus parameters. + However, you may want to experiment with PCI bus parameters + max-split-transactions(MOST) and MMRBC (use setpci command). + + A MOST value of 2 has been found optimal for Opterons and 3 for Itanium. + + It could be different for your hardware. + + Set MMRBC to 4K**. + + For example you can set + + For opteron:: + + #setpci -d 17d5:* 62=1d + + For Itanium:: + + #setpci -d 17d5:* 62=3d + + For detailed description of the PCI registers, please see Xframe User Guide. + +b. Ensure Transmit Checksum offload is enabled. Use ethtool to set/verify this + parameter. + +c. Turn on TSO(using "ethtool -K"):: + + # ethtool -K tso on + +Receive performance: + +a. By default, the driver respects BIOS settings for PCI bus parameters. + However, you may want to set PCI latency timer to 248:: + + #setpci -d 17d5:* LATENCY_TIMER=f8 + + For detailed description of the PCI registers, please see Xframe User Guide. + +b. Use 2-buffer mode. This results in large performance boost on + certain platforms(eg. SGI Altix, IBM xSeries). + +c. Ensure Receive Checksum offload is enabled. Use "ethtool -K ethX" command to + set/verify this option. + +d. Enable NAPI feature(in kernel configuration Device Drivers ---> Network + device support ---> Ethernet (10000 Mbit) ---> S2IO 10Gbe Xframe NIC) to + bring down CPU utilization. + +.. note:: + + For AMD opteron platforms with 8131 chipset, MMRBC=1 and MOST=1 are + recommended as safe parameters. + +For more information, please review the AMD8131 errata at +http://vip.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/ +26310_AMD-8131_HyperTransport_PCI-X_Tunnel_Revision_Guide_rev_3_18.pdf + +6. Support +========== + +For further support please contact either your 10GbE Xframe NIC vendor (IBM, +HP, SGI etc.) -- cgit v1.2.3