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(). ... --- drivers/infiniband/sw/rxe/rxe.c | 234 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 234 insertions(+) create mode 100644 drivers/infiniband/sw/rxe/rxe.c (limited to 'drivers/infiniband/sw/rxe/rxe.c') diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c new file mode 100644 index 000000000..136c2efe3 --- /dev/null +++ b/drivers/infiniband/sw/rxe/rxe.c @@ -0,0 +1,234 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. + * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. + */ + +#include +#include +#include "rxe.h" +#include "rxe_loc.h" + +MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib"); +MODULE_DESCRIPTION("Soft RDMA transport"); +MODULE_LICENSE("Dual BSD/GPL"); + +/* free resources for a rxe device all objects created for this device must + * have been destroyed + */ +void rxe_dealloc(struct ib_device *ib_dev) +{ + struct rxe_dev *rxe = container_of(ib_dev, struct rxe_dev, ib_dev); + + rxe_pool_cleanup(&rxe->uc_pool); + rxe_pool_cleanup(&rxe->pd_pool); + rxe_pool_cleanup(&rxe->ah_pool); + rxe_pool_cleanup(&rxe->srq_pool); + rxe_pool_cleanup(&rxe->qp_pool); + rxe_pool_cleanup(&rxe->cq_pool); + rxe_pool_cleanup(&rxe->mr_pool); + rxe_pool_cleanup(&rxe->mw_pool); + + WARN_ON(!RB_EMPTY_ROOT(&rxe->mcg_tree)); + + if (rxe->tfm) + crypto_free_shash(rxe->tfm); +} + +/* initialize rxe device parameters */ +static void rxe_init_device_param(struct rxe_dev *rxe) +{ + rxe->max_inline_data = RXE_MAX_INLINE_DATA; + + rxe->attr.vendor_id = RXE_VENDOR_ID; + rxe->attr.max_mr_size = RXE_MAX_MR_SIZE; + rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP; + rxe->attr.max_qp = RXE_MAX_QP; + rxe->attr.max_qp_wr = RXE_MAX_QP_WR; + rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS; + rxe->attr.kernel_cap_flags = IBK_ALLOW_USER_UNREG; + rxe->attr.max_send_sge = RXE_MAX_SGE; + rxe->attr.max_recv_sge = RXE_MAX_SGE; + rxe->attr.max_sge_rd = RXE_MAX_SGE_RD; + rxe->attr.max_cq = RXE_MAX_CQ; + rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1; + rxe->attr.max_mr = RXE_MAX_MR; + rxe->attr.max_mw = RXE_MAX_MW; + rxe->attr.max_pd = RXE_MAX_PD; + rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM; + rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM; + rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM; + rxe->attr.atomic_cap = IB_ATOMIC_HCA; + rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP; + rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH; + rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH; + rxe->attr.max_ah = RXE_MAX_AH; + rxe->attr.max_srq = RXE_MAX_SRQ; + rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR; + rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE; + rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN; + rxe->attr.max_pkeys = RXE_MAX_PKEYS; + rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY; + addrconf_addr_eui48((unsigned char *)&rxe->attr.sys_image_guid, + rxe->ndev->dev_addr); + + rxe->max_ucontext = RXE_MAX_UCONTEXT; +} + +/* initialize port attributes */ +static void rxe_init_port_param(struct rxe_port *port) +{ + port->attr.state = IB_PORT_DOWN; + port->attr.max_mtu = IB_MTU_4096; + port->attr.active_mtu = IB_MTU_256; + port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN; + port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS; + port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ; + port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR; + port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR; + port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN; + port->attr.lid = RXE_PORT_LID; + port->attr.sm_lid = RXE_PORT_SM_LID; + port->attr.lmc = RXE_PORT_LMC; + port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM; + port->attr.sm_sl = RXE_PORT_SM_SL; + port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT; + port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY; + port->attr.active_width = RXE_PORT_ACTIVE_WIDTH; + port->attr.active_speed = RXE_PORT_ACTIVE_SPEED; + port->attr.phys_state = RXE_PORT_PHYS_STATE; + port->mtu_cap = ib_mtu_enum_to_int(IB_MTU_256); + port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX); +} + +/* initialize port state, note IB convention that HCA ports are always + * numbered from 1 + */ +static void rxe_init_ports(struct rxe_dev *rxe) +{ + struct rxe_port *port = &rxe->port; + + rxe_init_port_param(port); + addrconf_addr_eui48((unsigned char *)&port->port_guid, + rxe->ndev->dev_addr); + spin_lock_init(&port->port_lock); +} + +/* init pools of managed objects */ +static void rxe_init_pools(struct rxe_dev *rxe) +{ + rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC); + rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD); + rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH); + rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ); + rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP); + rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ); + rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR); + rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW); +} + +/* initialize rxe device state */ +static void rxe_init(struct rxe_dev *rxe) +{ + /* init default device parameters */ + rxe_init_device_param(rxe); + + rxe_init_ports(rxe); + rxe_init_pools(rxe); + + /* init pending mmap list */ + spin_lock_init(&rxe->mmap_offset_lock); + spin_lock_init(&rxe->pending_lock); + INIT_LIST_HEAD(&rxe->pending_mmaps); + + /* init multicast support */ + spin_lock_init(&rxe->mcg_lock); + rxe->mcg_tree = RB_ROOT; + + mutex_init(&rxe->usdev_lock); +} + +void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) +{ + struct rxe_port *port = &rxe->port; + enum ib_mtu mtu; + + mtu = eth_mtu_int_to_enum(ndev_mtu); + + /* Make sure that new MTU in range */ + mtu = mtu ? min_t(enum ib_mtu, mtu, IB_MTU_4096) : IB_MTU_256; + + port->attr.active_mtu = mtu; + port->mtu_cap = ib_mtu_enum_to_int(mtu); +} + +/* called by ifc layer to create new rxe device. + * The caller should allocate memory for rxe by calling ib_alloc_device. + */ +int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name) +{ + rxe_init(rxe); + rxe_set_mtu(rxe, mtu); + + return rxe_register_device(rxe, ibdev_name); +} + +static int rxe_newlink(const char *ibdev_name, struct net_device *ndev) +{ + struct rxe_dev *exists; + int err = 0; + + if (is_vlan_dev(ndev)) { + pr_err("rxe creation allowed on top of a real device only\n"); + err = -EPERM; + goto err; + } + + exists = rxe_get_dev_from_net(ndev); + if (exists) { + ib_device_put(&exists->ib_dev); + rxe_dbg(exists, "already configured on %s\n", ndev->name); + err = -EEXIST; + goto err; + } + + err = rxe_net_add(ibdev_name, ndev); + if (err) { + rxe_dbg(exists, "failed to add %s\n", ndev->name); + goto err; + } +err: + return err; +} + +static struct rdma_link_ops rxe_link_ops = { + .type = "rxe", + .newlink = rxe_newlink, +}; + +static int __init rxe_module_init(void) +{ + int err; + + err = rxe_net_init(); + if (err) + return err; + + rdma_link_register(&rxe_link_ops); + pr_info("loaded\n"); + return 0; +} + +static void __exit rxe_module_exit(void) +{ + rdma_link_unregister(&rxe_link_ops); + ib_unregister_driver(RDMA_DRIVER_RXE); + rxe_net_exit(); + + pr_info("unloaded\n"); +} + +late_initcall(rxe_module_init); +module_exit(rxe_module_exit); + +MODULE_ALIAS_RDMA_LINK("rxe"); -- cgit v1.2.3