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/s390/scsi/zfcp_def.h | 353 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 353 insertions(+) create mode 100644 drivers/s390/scsi/zfcp_def.h (limited to 'drivers/s390/scsi/zfcp_def.h') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h new file mode 100644 index 000000000..94de55304 --- /dev/null +++ b/drivers/s390/scsi/zfcp_def.h @@ -0,0 +1,353 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * zfcp device driver + * + * Global definitions for the zfcp device driver. + * + * Copyright IBM Corp. 2002, 2020 + */ + +#ifndef ZFCP_DEF_H +#define ZFCP_DEF_H + +/*************************** INCLUDES *****************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "zfcp_fsf.h" +#include "zfcp_fc.h" +#include "zfcp_qdio.h" + +/********************* FSF SPECIFIC DEFINES *********************************/ + +/* ATTENTION: value must not be used by hardware */ +#define FSF_QTCB_UNSOLICITED_STATUS 0x6305 + +/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ + +/* + * Note, the leftmost 12 status bits (3 nibbles) are common among adapter, port + * and unit. This is a mask for bitwise 'and' with status values. + */ +#define ZFCP_COMMON_FLAGS 0xfff00000 + +/* common status bits */ +#define ZFCP_STATUS_COMMON_RUNNING 0x40000000 +#define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 +#define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 +#define ZFCP_STATUS_COMMON_OPEN 0x04000000 +#define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 +#define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 +#define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 +#define ZFCP_STATUS_COMMON_NOESC 0x00200000 + +/* adapter status */ +#define ZFCP_STATUS_ADAPTER_MB_ACT 0x00000001 +#define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 +#define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED 0x00000004 +#define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 +#define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 +#define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 +#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 +#define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400 + +/* remote port status */ +#define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 +#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002 + +/* FSF request status (this does not have a common part) */ +#define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 +#define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 +#define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 +#define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 +#define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 +#define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 +#define ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE 0x00020000 + +/************************* STRUCTURE DEFINITIONS *****************************/ + +/** + * enum zfcp_erp_act_type - Type of ERP action object. + * @ZFCP_ERP_ACTION_REOPEN_LUN: LUN recovery. + * @ZFCP_ERP_ACTION_REOPEN_PORT: Port recovery. + * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery. + * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery. + * + * Values must fit into u8 because of code dependencies: + * zfcp_dbf_rec_trig(), &zfcp_dbf_rec_trigger.want, &zfcp_dbf_rec_trigger.need; + * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), &zfcp_dbf_rec_running.rec_action. + */ +enum zfcp_erp_act_type { + ZFCP_ERP_ACTION_REOPEN_LUN = 1, + ZFCP_ERP_ACTION_REOPEN_PORT = 2, + ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3, + ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4, +}; + +/* + * Values must fit into u16 because of code dependencies: + * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), zfcp_dbf_rec_run_wka(), + * &zfcp_dbf_rec_running.rec_step. + */ +enum zfcp_erp_steps { + ZFCP_ERP_STEP_UNINITIALIZED = 0x0000, + ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, + ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, + ZFCP_ERP_STEP_PORT_OPENING = 0x0800, + ZFCP_ERP_STEP_LUN_CLOSING = 0x1000, + ZFCP_ERP_STEP_LUN_OPENING = 0x2000, +}; + +struct zfcp_erp_action { + struct list_head list; + enum zfcp_erp_act_type type; /* requested action code */ + struct zfcp_adapter *adapter; /* device which should be recovered */ + struct zfcp_port *port; + struct scsi_device *sdev; + u32 status; /* recovery status */ + enum zfcp_erp_steps step; /* active step of this erp action */ + unsigned long fsf_req_id; + struct timer_list timer; +}; + +/* holds various memory pools of an adapter */ +struct zfcp_adapter_mempool { + mempool_t *erp_req; + mempool_t *gid_pn_req; + mempool_t *scsi_req; + mempool_t *scsi_abort; + mempool_t *status_read_req; + mempool_t *sr_data; + mempool_t *gid_pn; + mempool_t *qtcb_pool; +}; + +struct zfcp_adapter { + struct kref ref; + u64 peer_wwnn; /* P2P peer WWNN */ + u64 peer_wwpn; /* P2P peer WWPN */ + u32 peer_d_id; /* P2P peer D_ID */ + struct ccw_device *ccw_device; /* S/390 ccw device */ + struct zfcp_qdio *qdio; + u32 hydra_version; /* Hydra version */ + u32 fsf_lic_version; + u32 adapter_features; /* FCP channel features */ + u32 connection_features; /* host connection features */ + u32 hardware_version; /* of FCP channel */ + u32 fc_security_algorithms; /* of FCP channel */ + u32 fc_security_algorithms_old; /* of FCP channel */ + u16 timer_ticks; /* time int for a tick */ + struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ + struct list_head port_list; /* remote port list */ + rwlock_t port_list_lock; /* port list lock */ + unsigned long req_no; /* unique FSF req number */ + struct zfcp_reqlist *req_list; + u32 fsf_req_seq_no; /* FSF cmnd seq number */ + rwlock_t abort_lock; /* Protects against SCSI + stack abort/command + completion races */ + atomic_t stat_miss; /* # missing status reads*/ + unsigned int stat_read_buf_num; + struct work_struct stat_work; + atomic_t status; /* status of this adapter */ + struct list_head erp_ready_head; /* error recovery for this + adapter/devices */ + wait_queue_head_t erp_ready_wq; + struct list_head erp_running_head; + rwlock_t erp_lock; + wait_queue_head_t erp_done_wqh; + struct zfcp_erp_action erp_action; /* pending error recovery */ + atomic_t erp_counter; + u32 erp_total_count; /* total nr of enqueued erp + actions */ + u32 erp_low_mem_count; /* nr of erp actions waiting + for memory */ + struct task_struct *erp_thread; + struct zfcp_fc_wka_ports *gs; /* generic services */ + struct zfcp_dbf *dbf; /* debug traces */ + struct zfcp_adapter_mempool pool; /* Adapter memory pools */ + struct fc_host_statistics *fc_stats; + struct fsf_qtcb_bottom_port *stats_reset_data; + unsigned long stats_reset; + struct delayed_work scan_work; + struct work_struct ns_up_work; + struct service_level service_level; + struct workqueue_struct *work_queue; + struct device_dma_parameters dma_parms; + struct zfcp_fc_events events; + unsigned long next_port_scan; + struct zfcp_diag_adapter *diagnostics; + struct work_struct version_change_lost_work; +}; + +struct zfcp_port { + struct device dev; + struct fc_rport *rport; /* rport of fc transport class */ + struct list_head list; /* list of remote ports */ + struct zfcp_adapter *adapter; /* adapter used to access port */ + struct list_head unit_list; /* head of logical unit list */ + rwlock_t unit_list_lock; /* unit list lock */ + atomic_t units; /* zfcp_unit count */ + atomic_t status; /* status of this remote port */ + u64 wwnn; /* WWNN if known */ + u64 wwpn; /* WWPN */ + u32 d_id; /* D_ID */ + u32 handle; /* handle assigned by FSF */ + struct zfcp_erp_action erp_action; /* pending error recovery */ + atomic_t erp_counter; + u32 maxframe_size; + u32 supported_classes; + u32 connection_info; + u32 connection_info_old; + struct work_struct gid_pn_work; + struct work_struct test_link_work; + struct work_struct rport_work; + enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task; + unsigned int starget_id; +}; + +struct zfcp_latency_record { + u32 min; + u32 max; + u64 sum; +}; + +struct zfcp_latency_cont { + struct zfcp_latency_record channel; + struct zfcp_latency_record fabric; + u64 counter; +}; + +struct zfcp_latencies { + struct zfcp_latency_cont read; + struct zfcp_latency_cont write; + struct zfcp_latency_cont cmd; + spinlock_t lock; +}; + +/** + * struct zfcp_unit - LUN configured via zfcp sysfs + * @dev: struct device for sysfs representation and reference counting + * @list: entry in LUN/unit list per zfcp_port + * @port: reference to zfcp_port where this LUN is configured + * @fcp_lun: 64 bit LUN value + * @scsi_work: for running scsi_scan_target + * + * This is the representation of a LUN that has been configured for + * usage. The main data here is the 64 bit LUN value, data for + * running I/O and recovery is in struct zfcp_scsi_dev. + */ +struct zfcp_unit { + struct device dev; + struct list_head list; + struct zfcp_port *port; + u64 fcp_lun; + struct work_struct scsi_work; +}; + +/** + * struct zfcp_scsi_dev - zfcp data per SCSI device + * @status: zfcp internal status flags + * @lun_handle: handle from "open lun" for issuing FSF requests + * @erp_action: zfcp erp data for opening and recovering this LUN + * @erp_counter: zfcp erp counter for this LUN + * @latencies: FSF channel and fabric latencies + * @port: zfcp_port where this LUN belongs to + */ +struct zfcp_scsi_dev { + atomic_t status; + u32 lun_handle; + struct zfcp_erp_action erp_action; + atomic_t erp_counter; + struct zfcp_latencies latencies; + struct zfcp_port *port; +}; + +/** + * sdev_to_zfcp - Access zfcp LUN data for SCSI device + * @sdev: scsi_device where to get the zfcp_scsi_dev pointer + */ +static inline struct zfcp_scsi_dev *sdev_to_zfcp(struct scsi_device *sdev) +{ + return scsi_transport_device_data(sdev); +} + +/** + * zfcp_scsi_dev_lun - Return SCSI device LUN as 64 bit FCP LUN + * @sdev: SCSI device where to get the LUN from + */ +static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev) +{ + u64 fcp_lun; + + int_to_scsilun(sdev->lun, (struct scsi_lun *)&fcp_lun); + return fcp_lun; +} + +/** + * struct zfcp_fsf_req - basic FSF request structure + * @list: list of FSF requests + * @req_id: unique request ID + * @adapter: adapter this request belongs to + * @qdio_req: qdio queue related values + * @completion: used to signal the completion of the request + * @status: status of the request + * @qtcb: associated QTCB + * @data: private data + * @timer: timer data of this request + * @erp_action: reference to erp action if request issued on behalf of ERP + * @pool: reference to memory pool if used for this request + * @issued: time when request was send (STCK) + * @handler: handler which should be called to process response + */ +struct zfcp_fsf_req { + struct list_head list; + unsigned long req_id; + struct zfcp_adapter *adapter; + struct zfcp_qdio_req qdio_req; + struct completion completion; + u32 status; + struct fsf_qtcb *qtcb; + void *data; + struct timer_list timer; + struct zfcp_erp_action *erp_action; + mempool_t *pool; + unsigned long long issued; + void (*handler)(struct zfcp_fsf_req *); +}; + +static inline +int zfcp_adapter_multi_buffer_active(struct zfcp_adapter *adapter) +{ + return atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_MB_ACT; +} + +static inline bool zfcp_fsf_req_is_status_read_buffer(struct zfcp_fsf_req *req) +{ + return req->qtcb == NULL; +} + +#endif /* ZFCP_DEF_H */ -- cgit v1.2.3