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/core/iwpm_util.h | 265 ++++++++++++++++++++++++++++++++++++ 1 file changed, 265 insertions(+) create mode 100644 drivers/infiniband/core/iwpm_util.h (limited to 'drivers/infiniband/core/iwpm_util.h') diff --git a/drivers/infiniband/core/iwpm_util.h b/drivers/infiniband/core/iwpm_util.h new file mode 100644 index 000000000..d6fc84021 --- /dev/null +++ b/drivers/infiniband/core/iwpm_util.h @@ -0,0 +1,265 @@ +/* + * Copyright (c) 2014 Intel Corporation. All rights reserved. + * Copyright (c) 2014 Chelsio, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _IWPM_UTIL_H +#define _IWPM_UTIL_H + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#define IWPM_NL_RETRANS 3 +#define IWPM_NL_TIMEOUT (10*HZ) +#define IWPM_MAPINFO_SKB_COUNT 20 + +#define IWPM_PID_UNDEFINED -1 +#define IWPM_PID_UNAVAILABLE -2 + +#define IWPM_REG_UNDEF 0x01 +#define IWPM_REG_VALID 0x02 +#define IWPM_REG_INCOMPL 0x04 + +struct iwpm_nlmsg_request { + struct list_head inprocess_list; + __u32 nlmsg_seq; + void *req_buffer; + u8 nl_client; + u8 request_done; + u16 err_code; + struct semaphore sem; + struct kref kref; +}; + +struct iwpm_mapping_info { + struct hlist_node hlist_node; + struct sockaddr_storage local_sockaddr; + struct sockaddr_storage mapped_sockaddr; + u8 nl_client; + u32 map_flags; +}; + +struct iwpm_remote_info { + struct hlist_node hlist_node; + struct sockaddr_storage remote_sockaddr; + struct sockaddr_storage mapped_loc_sockaddr; + struct sockaddr_storage mapped_rem_sockaddr; + u8 nl_client; +}; + +struct iwpm_admin_data { + atomic_t nlmsg_seq; + u32 reg_list[RDMA_NL_NUM_CLIENTS]; +}; + +/** + * iwpm_get_nlmsg_request - Allocate and initialize netlink message request + * @nlmsg_seq: Sequence number of the netlink message + * @nl_client: The index of the netlink client + * @gfp: Indicates how the memory for the request should be allocated + * + * Returns the newly allocated netlink request object if successful, + * otherwise returns NULL + */ +struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq, + u8 nl_client, gfp_t gfp); + +/** + * iwpm_free_nlmsg_request - Deallocate netlink message request + * @kref: Holds reference of netlink message request + */ +void iwpm_free_nlmsg_request(struct kref *kref); + +/** + * iwpm_find_nlmsg_request - Find netlink message request in the request list + * @echo_seq: Sequence number of the netlink request to find + * + * Returns the found netlink message request, + * if not found, returns NULL + */ +struct iwpm_nlmsg_request *iwpm_find_nlmsg_request(__u32 echo_seq); + +/** + * iwpm_wait_complete_req - Block while servicing the netlink request + * @nlmsg_request: Netlink message request to service + * + * Wakes up, after the request is completed or expired + * Returns 0 if the request is complete without error + */ +int iwpm_wait_complete_req(struct iwpm_nlmsg_request *nlmsg_request); + +/** + * iwpm_get_nlmsg_seq - Get the sequence number for a netlink + * message to send to the port mapper + * + * Returns the sequence number for the netlink message. + */ +int iwpm_get_nlmsg_seq(void); + +/** + * iwpm_add_remote_info - Add remote address info of the connecting peer + * to the remote info hash table + * @reminfo: The remote info to be added + */ +void iwpm_add_remote_info(struct iwpm_remote_info *reminfo); + +/** + * iwpm_check_registration - Check if the client registration + * matches the given one + * @nl_client: The index of the netlink client + * @reg: The given registration type to compare with + * + * Call iwpm_register_pid() to register a client + * Returns true if the client registration matches reg, + * otherwise returns false + */ +u32 iwpm_check_registration(u8 nl_client, u32 reg); + +/** + * iwpm_set_registration - Set the client registration + * @nl_client: The index of the netlink client + * @reg: Registration type to set + */ +void iwpm_set_registration(u8 nl_client, u32 reg); + +/** + * iwpm_get_registration - Get the client registration + * @nl_client: The index of the netlink client + * + * Returns the client registration type + */ +u32 iwpm_get_registration(u8 nl_client); + +/** + * iwpm_send_mapinfo - Send local and mapped IPv4/IPv6 address info of + * a client to the user space port mapper + * @nl_client: The index of the netlink client + * @iwpm_pid: The pid of the user space port mapper + * + * If successful, returns the number of sent mapping info records + */ +int iwpm_send_mapinfo(u8 nl_client, int iwpm_pid); + +/** + * iwpm_mapinfo_available - Check if any mapping info records is available + * in the hash table + * + * Returns 1 if mapping information is available, otherwise returns 0 + */ +int iwpm_mapinfo_available(void); + +/** + * iwpm_compare_sockaddr - Compare two sockaddr storage structs + * @a_sockaddr: first sockaddr to compare + * @b_sockaddr: second sockaddr to compare + * + * Return: 0 if they are holding the same ip/tcp address info, + * otherwise returns 1 + */ +int iwpm_compare_sockaddr(struct sockaddr_storage *a_sockaddr, + struct sockaddr_storage *b_sockaddr); + +/** + * iwpm_validate_nlmsg_attr - Check for NULL netlink attributes + * @nltb: Holds address of each netlink message attributes + * @nla_count: Number of netlink message attributes + * + * Returns error if any of the nla_count attributes is NULL + */ +static inline int iwpm_validate_nlmsg_attr(struct nlattr *nltb[], + int nla_count) +{ + int i; + for (i = 1; i < nla_count; i++) { + if (!nltb[i]) + return -EINVAL; + } + return 0; +} + +/** + * iwpm_create_nlmsg - Allocate skb and form a netlink message + * @nl_op: Netlink message opcode + * @nlh: Holds address of the netlink message header in skb + * @nl_client: The index of the netlink client + * + * Returns the newly allcated skb, or NULL if the tailroom of the skb + * is insufficient to store the message header and payload + */ +struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh, + int nl_client); + +/** + * iwpm_parse_nlmsg - Validate and parse the received netlink message + * @cb: Netlink callback structure + * @policy_max: Maximum attribute type to be expected + * @nlmsg_policy: Validation policy + * @nltb: Array to store policy_max parsed elements + * @msg_type: Type of netlink message + * + * Returns 0 on success or a negative error code + */ +int iwpm_parse_nlmsg(struct netlink_callback *cb, int policy_max, + const struct nla_policy *nlmsg_policy, + struct nlattr *nltb[], const char *msg_type); + +/** + * iwpm_print_sockaddr - Print IPv4/IPv6 address and TCP port + * @sockaddr: Socket address to print + * @msg: Message to print + */ +void iwpm_print_sockaddr(struct sockaddr_storage *sockaddr, char *msg); + +/** + * iwpm_send_hello - Send hello response to iwpmd + * + * @nl_client: The index of the netlink client + * @iwpm_pid: The pid of the user space port mapper + * @abi_version: The kernel's abi_version + * + * Returns 0 on success or a negative error code + */ +int iwpm_send_hello(u8 nl_client, int iwpm_pid, u16 abi_version); +extern u16 iwpm_ulib_version; +#endif -- cgit v1.2.3