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/netdevsim/netdevsim.h | 383 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 383 insertions(+) create mode 100644 drivers/net/netdevsim/netdevsim.h (limited to 'drivers/net/netdevsim/netdevsim.h') diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h new file mode 100644 index 000000000..7d8ed8d8d --- /dev/null +++ b/drivers/net/netdevsim/netdevsim.h @@ -0,0 +1,383 @@ +/* + * Copyright (C) 2017 Netronome Systems, Inc. + * + * This software is licensed under the GNU General License Version 2, + * June 1991 as shown in the file COPYING in the top-level directory of this + * source tree. + * + * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE + * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME + * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "netdevsim" + +#define NSIM_XDP_MAX_MTU 4000 + +#define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg) + +#define NSIM_IPSEC_MAX_SA_COUNT 33 +#define NSIM_IPSEC_VALID BIT(31) +#define NSIM_UDP_TUNNEL_N_PORTS 4 + +struct nsim_sa { + struct xfrm_state *xs; + __be32 ipaddr[4]; + u32 key[4]; + u32 salt; + bool used; + bool crypt; + bool rx; +}; + +struct nsim_ipsec { + struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT]; + struct dentry *pfile; + u32 count; + u32 tx; + u32 ok; +}; + +struct nsim_ethtool_pauseparam { + bool rx; + bool tx; + bool report_stats_rx; + bool report_stats_tx; +}; + +struct nsim_ethtool { + u32 get_err; + u32 set_err; + u32 channels; + struct nsim_ethtool_pauseparam pauseparam; + struct ethtool_coalesce coalesce; + struct ethtool_ringparam ring; + struct ethtool_fecparam fec; +}; + +struct netdevsim { + struct net_device *netdev; + struct nsim_dev *nsim_dev; + struct nsim_dev_port *nsim_dev_port; + + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; + + struct nsim_bus_dev *nsim_bus_dev; + + struct bpf_prog *bpf_offloaded; + u32 bpf_offloaded_id; + + struct xdp_attachment_info xdp; + struct xdp_attachment_info xdp_hw; + + bool bpf_tc_accept; + bool bpf_tc_non_bound_accept; + bool bpf_xdpdrv_accept; + bool bpf_xdpoffload_accept; + + bool bpf_map_accept; + struct nsim_ipsec ipsec; + struct { + u32 inject_error; + u32 sleep; + u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS]; + u32 (*ports)[NSIM_UDP_TUNNEL_N_PORTS]; + struct debugfs_u32_array dfs_ports[2]; + } udp_ports; + + struct nsim_ethtool ethtool; +}; + +struct netdevsim * +nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port); +void nsim_destroy(struct netdevsim *ns); + +void nsim_ethtool_init(struct netdevsim *ns); + +void nsim_udp_tunnels_debugfs_create(struct nsim_dev *nsim_dev); +int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev, + struct net_device *dev); +void nsim_udp_tunnels_info_destroy(struct net_device *dev); + +#ifdef CONFIG_BPF_SYSCALL +int nsim_bpf_dev_init(struct nsim_dev *nsim_dev); +void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev); +int nsim_bpf_init(struct netdevsim *ns); +void nsim_bpf_uninit(struct netdevsim *ns); +int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf); +int nsim_bpf_disable_tc(struct netdevsim *ns); +int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, + void *type_data, void *cb_priv); +#else + +static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev) +{ + return 0; +} + +static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev) +{ +} +static inline int nsim_bpf_init(struct netdevsim *ns) +{ + return 0; +} + +static inline void nsim_bpf_uninit(struct netdevsim *ns) +{ +} + +static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf) +{ + return -EOPNOTSUPP; +} + +static inline int nsim_bpf_disable_tc(struct netdevsim *ns) +{ + return 0; +} + +static inline int +nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, + void *cb_priv) +{ + return -EOPNOTSUPP; +} +#endif + +enum nsim_resource_id { + NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */ + NSIM_RESOURCE_IPV4, + NSIM_RESOURCE_IPV4_FIB, + NSIM_RESOURCE_IPV4_FIB_RULES, + NSIM_RESOURCE_IPV6, + NSIM_RESOURCE_IPV6_FIB, + NSIM_RESOURCE_IPV6_FIB_RULES, + NSIM_RESOURCE_NEXTHOPS, +}; + +struct nsim_dev_health { + struct devlink_health_reporter *empty_reporter; + struct devlink_health_reporter *dummy_reporter; + struct dentry *ddir; + char *recovered_break_msg; + u32 binary_len; + bool fail_recover; +}; + +int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink); +void nsim_dev_health_exit(struct nsim_dev *nsim_dev); + +struct nsim_dev_hwstats_netdev { + struct list_head list; + struct net_device *netdev; + struct rtnl_hw_stats64 stats; + bool enabled; + bool fail_enable; +}; + +struct nsim_dev_hwstats { + struct dentry *ddir; + struct dentry *l3_ddir; + + struct mutex hwsdev_list_lock; /* protects hwsdev list(s) */ + struct list_head l3_list; + + struct notifier_block netdevice_nb; + struct delayed_work traffic_dw; +}; + +int nsim_dev_hwstats_init(struct nsim_dev *nsim_dev); +void nsim_dev_hwstats_exit(struct nsim_dev *nsim_dev); + +#if IS_ENABLED(CONFIG_PSAMPLE) +int nsim_dev_psample_init(struct nsim_dev *nsim_dev); +void nsim_dev_psample_exit(struct nsim_dev *nsim_dev); +#else +static inline int nsim_dev_psample_init(struct nsim_dev *nsim_dev) +{ + return 0; +} + +static inline void nsim_dev_psample_exit(struct nsim_dev *nsim_dev) +{ +} +#endif + +enum nsim_dev_port_type { + NSIM_DEV_PORT_TYPE_PF, + NSIM_DEV_PORT_TYPE_VF, +}; + +#define NSIM_DEV_VF_PORT_INDEX_BASE 128 +#define NSIM_DEV_VF_PORT_INDEX_MAX UINT_MAX + +struct nsim_dev_port { + struct list_head list; + struct devlink_port devlink_port; + unsigned int port_index; + enum nsim_dev_port_type port_type; + struct dentry *ddir; + struct dentry *rate_parent; + char *parent_name; + struct netdevsim *ns; +}; + +struct nsim_vf_config { + int link_state; + u16 min_tx_rate; + u16 max_tx_rate; + u16 vlan; + __be16 vlan_proto; + u16 qos; + u8 vf_mac[ETH_ALEN]; + bool spoofchk_enabled; + bool trusted; + bool rss_query_enabled; +}; + +struct nsim_dev { + struct nsim_bus_dev *nsim_bus_dev; + struct nsim_fib_data *fib_data; + struct nsim_trap_data *trap_data; + struct dentry *ddir; + struct dentry *ports_ddir; + struct dentry *take_snapshot; + struct dentry *nodes_ddir; + + struct nsim_vf_config *vfconfigs; + + struct bpf_offload_dev *bpf_dev; + bool bpf_bind_accept; + bool bpf_bind_verifier_accept; + u32 bpf_bind_verifier_delay; + struct dentry *ddir_bpf_bound_progs; + u32 prog_id_gen; + struct list_head bpf_bound_progs; + struct list_head bpf_bound_maps; + struct netdev_phys_item_id switch_id; + struct list_head port_list; + bool fw_update_status; + u32 fw_update_overwrite_mask; + u32 max_macs; + bool test1; + bool dont_allow_reload; + bool fail_reload; + struct devlink_region *dummy_region; + struct nsim_dev_health health; + struct nsim_dev_hwstats hwstats; + struct flow_action_cookie *fa_cookie; + spinlock_t fa_cookie_lock; /* protects fa_cookie */ + bool fail_trap_group_set; + bool fail_trap_policer_set; + bool fail_trap_policer_counter_get; + bool fail_trap_drop_counter_get; + struct { + struct udp_tunnel_nic_shared utn_shared; + u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS]; + bool sync_all; + bool open_only; + bool ipv4_only; + bool shared; + bool static_iana_vxlan; + u32 sleep; + } udp_ports; + struct nsim_dev_psample *psample; + u16 esw_mode; +}; + +static inline bool nsim_esw_mode_is_legacy(struct nsim_dev *nsim_dev) +{ + return nsim_dev->esw_mode == DEVLINK_ESWITCH_MODE_LEGACY; +} + +static inline bool nsim_esw_mode_is_switchdev(struct nsim_dev *nsim_dev) +{ + return nsim_dev->esw_mode == DEVLINK_ESWITCH_MODE_SWITCHDEV; +} + +static inline struct net *nsim_dev_net(struct nsim_dev *nsim_dev) +{ + return devlink_net(priv_to_devlink(nsim_dev)); +} + +int nsim_dev_init(void); +void nsim_dev_exit(void); +int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev); +void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev); +int nsim_drv_port_add(struct nsim_bus_dev *nsim_bus_dev, + enum nsim_dev_port_type type, + unsigned int port_index); +int nsim_drv_port_del(struct nsim_bus_dev *nsim_bus_dev, + enum nsim_dev_port_type type, + unsigned int port_index); +int nsim_drv_configure_vfs(struct nsim_bus_dev *nsim_bus_dev, + unsigned int num_vfs); + +unsigned int nsim_dev_get_vfs(struct nsim_dev *nsim_dev); + +struct nsim_fib_data *nsim_fib_create(struct devlink *devlink, + struct netlink_ext_ack *extack); +void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *fib_data); +u64 nsim_fib_get_val(struct nsim_fib_data *fib_data, + enum nsim_resource_id res_id, bool max); + +static inline bool nsim_dev_port_is_pf(struct nsim_dev_port *nsim_dev_port) +{ + return nsim_dev_port->port_type == NSIM_DEV_PORT_TYPE_PF; +} + +static inline bool nsim_dev_port_is_vf(struct nsim_dev_port *nsim_dev_port) +{ + return nsim_dev_port->port_type == NSIM_DEV_PORT_TYPE_VF; +} +#if IS_ENABLED(CONFIG_XFRM_OFFLOAD) +void nsim_ipsec_init(struct netdevsim *ns); +void nsim_ipsec_teardown(struct netdevsim *ns); +bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb); +#else +static inline void nsim_ipsec_init(struct netdevsim *ns) +{ +} + +static inline void nsim_ipsec_teardown(struct netdevsim *ns) +{ +} + +static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb) +{ + return true; +} +#endif + +struct nsim_bus_dev { + struct device dev; + struct list_head list; + unsigned int port_count; + unsigned int num_queues; /* Number of queues for each port on this bus */ + struct net *initial_net; /* Purpose of this is to carry net pointer + * during the probe time only. + */ + unsigned int max_vfs; + unsigned int num_vfs; + bool init; +}; + +int nsim_bus_init(void); +void nsim_bus_exit(void); -- cgit v1.2.3