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(). ... --- include/net/sctp/command.h | 236 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 include/net/sctp/command.h (limited to 'include/net/sctp/command.h') diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h new file mode 100644 index 000000000..2058fabff --- /dev/null +++ b/include/net/sctp/command.h @@ -0,0 +1,236 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* SCTP kernel Implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (C) 1999-2001 Cisco, Motorola + * + * This file is part of the SCTP kernel implementation + * + * These are the definitions needed for the command object. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers + * + * Written or modified by: + * La Monte H.P. Yarroll + * Karl Knutson + * Ardelle Fan + * Sridhar Samudrala + */ + +#ifndef __net_sctp_command_h__ +#define __net_sctp_command_h__ + +#include +#include + + +enum sctp_verb { + SCTP_CMD_NOP = 0, /* Do nothing. */ + SCTP_CMD_NEW_ASOC, /* Register a new association. */ + SCTP_CMD_DELETE_TCB, /* Delete the current association. */ + SCTP_CMD_NEW_STATE, /* Enter a new state. */ + SCTP_CMD_REPORT_TSN, /* Record the arrival of a TSN. */ + SCTP_CMD_GEN_SACK, /* Send a Selective ACK (maybe). */ + SCTP_CMD_PROCESS_SACK, /* Process an inbound SACK. */ + SCTP_CMD_GEN_INIT_ACK, /* Generate an INIT ACK chunk. */ + SCTP_CMD_PEER_INIT, /* Process a INIT from the peer. */ + SCTP_CMD_GEN_COOKIE_ECHO, /* Generate a COOKIE ECHO chunk. */ + SCTP_CMD_CHUNK_ULP, /* Send a chunk to the sockets layer. */ + SCTP_CMD_EVENT_ULP, /* Send a notification to the sockets layer. */ + SCTP_CMD_REPLY, /* Send a chunk to our peer. */ + SCTP_CMD_SEND_PKT, /* Send a full packet to our peer. */ + SCTP_CMD_RETRAN, /* Mark a transport for retransmission. */ + SCTP_CMD_ECN_CE, /* Do delayed CE processing. */ + SCTP_CMD_ECN_ECNE, /* Do delayed ECNE processing. */ + SCTP_CMD_ECN_CWR, /* Do delayed CWR processing. */ + SCTP_CMD_TIMER_START, /* Start a timer. */ + SCTP_CMD_TIMER_START_ONCE, /* Start a timer once */ + SCTP_CMD_TIMER_RESTART, /* Restart a timer. */ + SCTP_CMD_TIMER_STOP, /* Stop a timer. */ + SCTP_CMD_INIT_CHOOSE_TRANSPORT, /* Choose transport for an INIT. */ + SCTP_CMD_INIT_COUNTER_RESET, /* Reset init counter. */ + SCTP_CMD_INIT_COUNTER_INC, /* Increment init counter. */ + SCTP_CMD_INIT_RESTART, /* High level, do init timer work. */ + SCTP_CMD_COOKIEECHO_RESTART, /* High level, do cookie-echo timer work. */ + SCTP_CMD_INIT_FAILED, /* High level, do init failure work. */ + SCTP_CMD_REPORT_DUP, /* Report a duplicate TSN. */ + SCTP_CMD_STRIKE, /* Mark a strike against a transport. */ + SCTP_CMD_HB_TIMERS_START, /* Start the heartbeat timers. */ + SCTP_CMD_HB_TIMER_UPDATE, /* Update a heartbeat timers. */ + SCTP_CMD_HB_TIMERS_STOP, /* Stop the heartbeat timers. */ + SCTP_CMD_PROBE_TIMER_UPDATE, /* Update a probe timer. */ + SCTP_CMD_TRANSPORT_HB_SENT, /* Reset the status of a transport. */ + SCTP_CMD_TRANSPORT_IDLE, /* Do manipulations on idle transport */ + SCTP_CMD_TRANSPORT_ON, /* Mark the transport as active. */ + SCTP_CMD_REPORT_ERROR, /* Pass this error back out of the sm. */ + SCTP_CMD_REPORT_BAD_TAG, /* Verification tags didn't match. */ + SCTP_CMD_PROCESS_CTSN, /* Sideeffect from shutdown. */ + SCTP_CMD_ASSOC_FAILED, /* Handle association failure. */ + SCTP_CMD_DISCARD_PACKET, /* Discard the whole packet. */ + SCTP_CMD_GEN_SHUTDOWN, /* Generate a SHUTDOWN chunk. */ + SCTP_CMD_PURGE_OUTQUEUE, /* Purge all data waiting to be sent. */ + SCTP_CMD_SETUP_T2, /* Hi-level, setup T2-shutdown parms. */ + SCTP_CMD_RTO_PENDING, /* Set transport's rto_pending. */ + SCTP_CMD_PART_DELIVER, /* Partial data delivery considerations. */ + SCTP_CMD_RENEGE, /* Renege data on an association. */ + SCTP_CMD_SETUP_T4, /* ADDIP, setup T4 RTO timer parms. */ + SCTP_CMD_PROCESS_OPERR, /* Process an ERROR chunk. */ + SCTP_CMD_REPORT_FWDTSN, /* Report new cumulative TSN Ack. */ + SCTP_CMD_PROCESS_FWDTSN, /* Skips were reported, so process further. */ + SCTP_CMD_CLEAR_INIT_TAG, /* Clears association peer's inittag. */ + SCTP_CMD_DEL_NON_PRIMARY, /* Removes non-primary peer transports. */ + SCTP_CMD_T3_RTX_TIMERS_STOP, /* Stops T3-rtx pending timers */ + SCTP_CMD_FORCE_PRIM_RETRAN, /* Forces retrans. over primary path. */ + SCTP_CMD_SET_SK_ERR, /* Set sk_err */ + SCTP_CMD_ASSOC_CHANGE, /* generate and send assoc_change event */ + SCTP_CMD_ADAPTATION_IND, /* generate and send adaptation event */ + SCTP_CMD_PEER_NO_AUTH, /* generate and send authentication event */ + SCTP_CMD_ASSOC_SHKEY, /* generate the association shared keys */ + SCTP_CMD_T1_RETRAN, /* Mark for retransmission after T1 timeout */ + SCTP_CMD_UPDATE_INITTAG, /* Update peer inittag */ + SCTP_CMD_SEND_MSG, /* Send the whole use message */ + SCTP_CMD_PURGE_ASCONF_QUEUE, /* Purge all asconf queues.*/ + SCTP_CMD_SET_ASOC, /* Restore association context */ + SCTP_CMD_LAST +}; + +/* How many commands can you put in an struct sctp_cmd_seq? + * This is a rather arbitrary number, ideally derived from a careful + * analysis of the state functions, but in reality just taken from + * thin air in the hopes othat we don't trigger a kernel panic. + */ +#define SCTP_MAX_NUM_COMMANDS 20 + +union sctp_arg { + void *zero_all; /* Set to NULL to clear the entire union */ + __s32 i32; + __u32 u32; + __be32 be32; + __u16 u16; + __u8 u8; + int error; + __be16 err; + enum sctp_state state; + enum sctp_event_timeout to; + struct sctp_chunk *chunk; + struct sctp_association *asoc; + struct sctp_transport *transport; + struct sctp_bind_addr *bp; + struct sctp_init_chunk *init; + struct sctp_ulpevent *ulpevent; + struct sctp_packet *packet; + struct sctp_sackhdr *sackh; + struct sctp_datamsg *msg; +}; + +/* We are simulating ML type constructors here. + * + * SCTP_ARG_CONSTRUCTOR(NAME, TYPE, ELT) builds a function called + * SCTP_NAME() which takes an argument of type TYPE and returns an + * union sctp_arg. It does this by inserting the sole argument into + * the ELT union element of a local union sctp_arg. + * + * E.g., SCTP_ARG_CONSTRUCTOR(I32, __s32, i32) builds SCTP_I32(arg), + * which takes an __s32 and returns a union sctp_arg containing the + * __s32. So, after foo = SCTP_I32(arg), foo.i32 == arg. + */ + +#define SCTP_ARG_CONSTRUCTOR(name, type, elt) \ +static inline union sctp_arg \ +SCTP_## name (type arg) \ +{ union sctp_arg retval;\ + retval.zero_all = NULL;\ + retval.elt = arg;\ + return retval;\ +} + +SCTP_ARG_CONSTRUCTOR(I32, __s32, i32) +SCTP_ARG_CONSTRUCTOR(U32, __u32, u32) +SCTP_ARG_CONSTRUCTOR(BE32, __be32, be32) +SCTP_ARG_CONSTRUCTOR(U16, __u16, u16) +SCTP_ARG_CONSTRUCTOR(U8, __u8, u8) +SCTP_ARG_CONSTRUCTOR(ERROR, int, error) +SCTP_ARG_CONSTRUCTOR(PERR, __be16, err) /* protocol error */ +SCTP_ARG_CONSTRUCTOR(STATE, enum sctp_state, state) +SCTP_ARG_CONSTRUCTOR(TO, enum sctp_event_timeout, to) +SCTP_ARG_CONSTRUCTOR(CHUNK, struct sctp_chunk *, chunk) +SCTP_ARG_CONSTRUCTOR(ASOC, struct sctp_association *, asoc) +SCTP_ARG_CONSTRUCTOR(TRANSPORT, struct sctp_transport *, transport) +SCTP_ARG_CONSTRUCTOR(BA, struct sctp_bind_addr *, bp) +SCTP_ARG_CONSTRUCTOR(PEER_INIT, struct sctp_init_chunk *, init) +SCTP_ARG_CONSTRUCTOR(ULPEVENT, struct sctp_ulpevent *, ulpevent) +SCTP_ARG_CONSTRUCTOR(PACKET, struct sctp_packet *, packet) +SCTP_ARG_CONSTRUCTOR(SACKH, struct sctp_sackhdr *, sackh) +SCTP_ARG_CONSTRUCTOR(DATAMSG, struct sctp_datamsg *, msg) + +static inline union sctp_arg SCTP_FORCE(void) +{ + return SCTP_I32(1); +} + +static inline union sctp_arg SCTP_NOFORCE(void) +{ + return SCTP_I32(0); +} + +static inline union sctp_arg SCTP_NULL(void) +{ + union sctp_arg retval; + retval.zero_all = NULL; + return retval; +} + +struct sctp_cmd { + union sctp_arg obj; + enum sctp_verb verb; +}; + +struct sctp_cmd_seq { + struct sctp_cmd cmds[SCTP_MAX_NUM_COMMANDS]; + struct sctp_cmd *last_used_slot; + struct sctp_cmd *next_cmd; +}; + + +/* Initialize a block of memory as a command sequence. + * Return 0 if the initialization fails. + */ +static inline int sctp_init_cmd_seq(struct sctp_cmd_seq *seq) +{ + /* cmds[] is filled backwards to simplify the overflow BUG() check */ + seq->last_used_slot = seq->cmds + SCTP_MAX_NUM_COMMANDS; + seq->next_cmd = seq->last_used_slot; + return 1; /* We always succeed. */ +} + + +/* Add a command to an struct sctp_cmd_seq. + * + * Use the SCTP_* constructors defined by SCTP_ARG_CONSTRUCTOR() above + * to wrap data which goes in the obj argument. + */ +static inline void sctp_add_cmd_sf(struct sctp_cmd_seq *seq, + enum sctp_verb verb, union sctp_arg obj) +{ + struct sctp_cmd *cmd = seq->last_used_slot - 1; + + BUG_ON(cmd < seq->cmds); + + cmd->verb = verb; + cmd->obj = obj; + seq->last_used_slot = cmd; +} + +/* Return the next command structure in an sctp_cmd_seq. + * Return NULL at the end of the sequence. + */ +static inline struct sctp_cmd *sctp_next_cmd(struct sctp_cmd_seq *seq) +{ + if (seq->next_cmd <= seq->last_used_slot) + return NULL; + + return --seq->next_cmd; +} + +#endif /* __net_sctp_command_h__ */ -- cgit v1.2.3