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/net/ethernet/sfc/falcon/efx.h | 274 ++++++++++++++++++++++++++++++++++ 1 file changed, 274 insertions(+) create mode 100644 drivers/net/ethernet/sfc/falcon/efx.h (limited to 'drivers/net/ethernet/sfc/falcon/efx.h') diff --git a/drivers/net/ethernet/sfc/falcon/efx.h b/drivers/net/ethernet/sfc/falcon/efx.h new file mode 100644 index 000000000..d3b464654 --- /dev/null +++ b/drivers/net/ethernet/sfc/falcon/efx.h @@ -0,0 +1,274 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2005-2006 Fen Systems Ltd. + * Copyright 2006-2013 Solarflare Communications Inc. + */ + +#ifndef EF4_EFX_H +#define EF4_EFX_H + +#include "net_driver.h" +#include "filter.h" + +/* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */ +/* All VFs use BAR 0/1 for memory */ +#define EF4_MEM_BAR 2 +#define EF4_MEM_VF_BAR 0 + +int ef4_net_open(struct net_device *net_dev); +int ef4_net_stop(struct net_device *net_dev); + +/* TX */ +int ef4_probe_tx_queue(struct ef4_tx_queue *tx_queue); +void ef4_remove_tx_queue(struct ef4_tx_queue *tx_queue); +void ef4_init_tx_queue(struct ef4_tx_queue *tx_queue); +void ef4_init_tx_queue_core_txq(struct ef4_tx_queue *tx_queue); +void ef4_fini_tx_queue(struct ef4_tx_queue *tx_queue); +netdev_tx_t ef4_hard_start_xmit(struct sk_buff *skb, + struct net_device *net_dev); +netdev_tx_t ef4_enqueue_skb(struct ef4_tx_queue *tx_queue, struct sk_buff *skb); +void ef4_xmit_done(struct ef4_tx_queue *tx_queue, unsigned int index); +int ef4_setup_tc(struct net_device *net_dev, enum tc_setup_type type, + void *type_data); +unsigned int ef4_tx_max_skb_descs(struct ef4_nic *efx); +extern bool ef4_separate_tx_channels; + +/* RX */ +void ef4_set_default_rx_indir_table(struct ef4_nic *efx); +void ef4_rx_config_page_split(struct ef4_nic *efx); +int ef4_probe_rx_queue(struct ef4_rx_queue *rx_queue); +void ef4_remove_rx_queue(struct ef4_rx_queue *rx_queue); +void ef4_init_rx_queue(struct ef4_rx_queue *rx_queue); +void ef4_fini_rx_queue(struct ef4_rx_queue *rx_queue); +void ef4_fast_push_rx_descriptors(struct ef4_rx_queue *rx_queue, bool atomic); +void ef4_rx_slow_fill(struct timer_list *t); +void __ef4_rx_packet(struct ef4_channel *channel); +void ef4_rx_packet(struct ef4_rx_queue *rx_queue, unsigned int index, + unsigned int n_frags, unsigned int len, u16 flags); +static inline void ef4_rx_flush_packet(struct ef4_channel *channel) +{ + if (channel->rx_pkt_n_frags) + __ef4_rx_packet(channel); +} +void ef4_schedule_slow_fill(struct ef4_rx_queue *rx_queue); + +#define EF4_MAX_DMAQ_SIZE 4096UL +#define EF4_DEFAULT_DMAQ_SIZE 1024UL +#define EF4_MIN_DMAQ_SIZE 512UL + +#define EF4_MAX_EVQ_SIZE 16384UL +#define EF4_MIN_EVQ_SIZE 512UL + +/* Maximum number of TCP segments we support for soft-TSO */ +#define EF4_TSO_MAX_SEGS 100 + +/* The smallest [rt]xq_entries that the driver supports. RX minimum + * is a bit arbitrary. For TX, we must have space for at least 2 + * TSO skbs. + */ +#define EF4_RXQ_MIN_ENT 128U +#define EF4_TXQ_MIN_ENT(efx) (2 * ef4_tx_max_skb_descs(efx)) + +static inline bool ef4_rss_enabled(struct ef4_nic *efx) +{ + return efx->rss_spread > 1; +} + +/* Filters */ + +void ef4_mac_reconfigure(struct ef4_nic *efx); + +/** + * ef4_filter_insert_filter - add or replace a filter + * @efx: NIC in which to insert the filter + * @spec: Specification for the filter + * @replace_equal: Flag for whether the specified filter may replace an + * existing filter with equal priority + * + * On success, return the filter ID. + * On failure, return a negative error code. + * + * If existing filters have equal match values to the new filter spec, + * then the new filter might replace them or the function might fail, + * as follows. + * + * 1. If the existing filters have lower priority, or @replace_equal + * is set and they have equal priority, replace them. + * + * 2. If the existing filters have higher priority, return -%EPERM. + * + * 3. If !ef4_filter_is_mc_recipient(@spec), or the NIC does not + * support delivery to multiple recipients, return -%EEXIST. + * + * This implies that filters for multiple multicast recipients must + * all be inserted with the same priority and @replace_equal = %false. + */ +static inline s32 ef4_filter_insert_filter(struct ef4_nic *efx, + struct ef4_filter_spec *spec, + bool replace_equal) +{ + return efx->type->filter_insert(efx, spec, replace_equal); +} + +/** + * ef4_filter_remove_id_safe - remove a filter by ID, carefully + * @efx: NIC from which to remove the filter + * @priority: Priority of filter, as passed to @ef4_filter_insert_filter + * @filter_id: ID of filter, as returned by @ef4_filter_insert_filter + * + * This function will range-check @filter_id, so it is safe to call + * with a value passed from userland. + */ +static inline int ef4_filter_remove_id_safe(struct ef4_nic *efx, + enum ef4_filter_priority priority, + u32 filter_id) +{ + return efx->type->filter_remove_safe(efx, priority, filter_id); +} + +/** + * ef4_filter_get_filter_safe - retrieve a filter by ID, carefully + * @efx: NIC from which to remove the filter + * @priority: Priority of filter, as passed to @ef4_filter_insert_filter + * @filter_id: ID of filter, as returned by @ef4_filter_insert_filter + * @spec: Buffer in which to store filter specification + * + * This function will range-check @filter_id, so it is safe to call + * with a value passed from userland. + */ +static inline int +ef4_filter_get_filter_safe(struct ef4_nic *efx, + enum ef4_filter_priority priority, + u32 filter_id, struct ef4_filter_spec *spec) +{ + return efx->type->filter_get_safe(efx, priority, filter_id, spec); +} + +static inline u32 ef4_filter_count_rx_used(struct ef4_nic *efx, + enum ef4_filter_priority priority) +{ + return efx->type->filter_count_rx_used(efx, priority); +} +static inline u32 ef4_filter_get_rx_id_limit(struct ef4_nic *efx) +{ + return efx->type->filter_get_rx_id_limit(efx); +} +static inline s32 ef4_filter_get_rx_ids(struct ef4_nic *efx, + enum ef4_filter_priority priority, + u32 *buf, u32 size) +{ + return efx->type->filter_get_rx_ids(efx, priority, buf, size); +} +#ifdef CONFIG_RFS_ACCEL +int ef4_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, + u16 rxq_index, u32 flow_id); +bool __ef4_filter_rfs_expire(struct ef4_nic *efx, unsigned quota); +static inline void ef4_filter_rfs_expire(struct ef4_channel *channel) +{ + if (channel->rfs_filters_added >= 60 && + __ef4_filter_rfs_expire(channel->efx, 100)) + channel->rfs_filters_added -= 60; +} +#define ef4_filter_rfs_enabled() 1 +#else +static inline void ef4_filter_rfs_expire(struct ef4_channel *channel) {} +#define ef4_filter_rfs_enabled() 0 +#endif +bool ef4_filter_is_mc_recipient(const struct ef4_filter_spec *spec); + +/* Channels */ +int ef4_channel_dummy_op_int(struct ef4_channel *channel); +void ef4_channel_dummy_op_void(struct ef4_channel *channel); +int ef4_realloc_channels(struct ef4_nic *efx, u32 rxq_entries, u32 txq_entries); + +/* Ports */ +int ef4_reconfigure_port(struct ef4_nic *efx); +int __ef4_reconfigure_port(struct ef4_nic *efx); + +/* Ethtool support */ +extern const struct ethtool_ops ef4_ethtool_ops; + +/* Reset handling */ +int ef4_reset(struct ef4_nic *efx, enum reset_type method); +void ef4_reset_down(struct ef4_nic *efx, enum reset_type method); +int ef4_reset_up(struct ef4_nic *efx, enum reset_type method, bool ok); +int ef4_try_recovery(struct ef4_nic *efx); + +/* Global */ +void ef4_schedule_reset(struct ef4_nic *efx, enum reset_type type); +unsigned int ef4_usecs_to_ticks(struct ef4_nic *efx, unsigned int usecs); +unsigned int ef4_ticks_to_usecs(struct ef4_nic *efx, unsigned int ticks); +int ef4_init_irq_moderation(struct ef4_nic *efx, unsigned int tx_usecs, + unsigned int rx_usecs, bool rx_adaptive, + bool rx_may_override_tx); +void ef4_get_irq_moderation(struct ef4_nic *efx, unsigned int *tx_usecs, + unsigned int *rx_usecs, bool *rx_adaptive); +void ef4_stop_eventq(struct ef4_channel *channel); +void ef4_start_eventq(struct ef4_channel *channel); + +/* Dummy PHY ops for PHY drivers */ +int ef4_port_dummy_op_int(struct ef4_nic *efx); +void ef4_port_dummy_op_void(struct ef4_nic *efx); + +/* Update the generic software stats in the passed stats array */ +void ef4_update_sw_stats(struct ef4_nic *efx, u64 *stats); + +/* MTD */ +#ifdef CONFIG_SFC_FALCON_MTD +int ef4_mtd_add(struct ef4_nic *efx, struct ef4_mtd_partition *parts, + size_t n_parts, size_t sizeof_part); +static inline int ef4_mtd_probe(struct ef4_nic *efx) +{ + return efx->type->mtd_probe(efx); +} +void ef4_mtd_rename(struct ef4_nic *efx); +void ef4_mtd_remove(struct ef4_nic *efx); +#else +static inline int ef4_mtd_probe(struct ef4_nic *efx) { return 0; } +static inline void ef4_mtd_rename(struct ef4_nic *efx) {} +static inline void ef4_mtd_remove(struct ef4_nic *efx) {} +#endif + +static inline void ef4_schedule_channel(struct ef4_channel *channel) +{ + netif_vdbg(channel->efx, intr, channel->efx->net_dev, + "channel %d scheduling NAPI poll on CPU%d\n", + channel->channel, raw_smp_processor_id()); + + napi_schedule(&channel->napi_str); +} + +static inline void ef4_schedule_channel_irq(struct ef4_channel *channel) +{ + channel->event_test_cpu = raw_smp_processor_id(); + ef4_schedule_channel(channel); +} + +void ef4_link_status_changed(struct ef4_nic *efx); +void ef4_link_set_advertising(struct ef4_nic *efx, u32); +void ef4_link_set_wanted_fc(struct ef4_nic *efx, u8); + +static inline void ef4_device_detach_sync(struct ef4_nic *efx) +{ + struct net_device *dev = efx->net_dev; + + /* Lock/freeze all TX queues so that we can be sure the + * TX scheduler is stopped when we're done and before + * netif_device_present() becomes false. + */ + netif_tx_lock_bh(dev); + netif_device_detach(dev); + netif_tx_unlock_bh(dev); +} + +static inline bool ef4_rwsem_assert_write_locked(struct rw_semaphore *sem) +{ + if (WARN_ON(down_read_trylock(sem))) { + up_read(sem); + return false; + } + return true; +} + +#endif /* EF4_EFX_H */ -- cgit v1.2.3