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/scsi/scsi_transport_sas.h | 245 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 245 insertions(+) create mode 100644 include/scsi/scsi_transport_sas.h (limited to 'include/scsi/scsi_transport_sas.h') diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h new file mode 100644 index 000000000..0e75b9277 --- /dev/null +++ b/include/scsi/scsi_transport_sas.h @@ -0,0 +1,245 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef SCSI_TRANSPORT_SAS_H +#define SCSI_TRANSPORT_SAS_H + +#include +#include +#include +#include +#include + +struct scsi_transport_template; +struct sas_rphy; +struct request; + +#if !IS_ENABLED(CONFIG_SCSI_SAS_ATTRS) +static inline int scsi_is_sas_rphy(const struct device *sdev) +{ + return 0; +} +#else +extern int scsi_is_sas_rphy(const struct device *); +#endif + +static inline int sas_protocol_ata(enum sas_protocol proto) +{ + return ((proto & SAS_PROTOCOL_SATA) || + (proto & SAS_PROTOCOL_STP))? 1 : 0; +} + +enum sas_linkrate { + /* These Values are defined in the SAS standard */ + SAS_LINK_RATE_UNKNOWN = 0, + SAS_PHY_DISABLED = 1, + SAS_PHY_RESET_PROBLEM = 2, + SAS_SATA_SPINUP_HOLD = 3, + SAS_SATA_PORT_SELECTOR = 4, + SAS_PHY_RESET_IN_PROGRESS = 5, + SAS_LINK_RATE_1_5_GBPS = 8, + SAS_LINK_RATE_G1 = SAS_LINK_RATE_1_5_GBPS, + SAS_LINK_RATE_3_0_GBPS = 9, + SAS_LINK_RATE_G2 = SAS_LINK_RATE_3_0_GBPS, + SAS_LINK_RATE_6_0_GBPS = 10, + SAS_LINK_RATE_12_0_GBPS = 11, + SAS_LINK_RATE_22_5_GBPS = 12, + /* These are virtual to the transport class and may never + * be signalled normally since the standard defined field + * is only 4 bits */ + SAS_LINK_RATE_FAILED = 0x10, + SAS_PHY_VIRTUAL = 0x11, +}; + +struct sas_identify { + enum sas_device_type device_type; + enum sas_protocol initiator_port_protocols; + enum sas_protocol target_port_protocols; + u64 sas_address; + u8 phy_identifier; +}; + +struct sas_phy { + struct device dev; + int number; + int enabled; + + /* phy identification */ + struct sas_identify identify; + + /* phy attributes */ + enum sas_linkrate negotiated_linkrate; + enum sas_linkrate minimum_linkrate_hw; + enum sas_linkrate minimum_linkrate; + enum sas_linkrate maximum_linkrate_hw; + enum sas_linkrate maximum_linkrate; + + /* link error statistics */ + u32 invalid_dword_count; + u32 running_disparity_error_count; + u32 loss_of_dword_sync_count; + u32 phy_reset_problem_count; + + /* for the list of phys belonging to a port */ + struct list_head port_siblings; + + /* available to the lldd */ + void *hostdata; +}; + +#define dev_to_phy(d) \ + container_of((d), struct sas_phy, dev) +#define transport_class_to_phy(dev) \ + dev_to_phy((dev)->parent) +#define phy_to_shost(phy) \ + dev_to_shost((phy)->dev.parent) + +struct request_queue; +struct sas_rphy { + struct device dev; + struct sas_identify identify; + struct list_head list; + struct request_queue *q; + u32 scsi_target_id; +}; + +#define dev_to_rphy(d) \ + container_of((d), struct sas_rphy, dev) +#define transport_class_to_rphy(dev) \ + dev_to_rphy((dev)->parent) +#define rphy_to_shost(rphy) \ + dev_to_shost((rphy)->dev.parent) +#define target_to_rphy(targ) \ + dev_to_rphy((targ)->dev.parent) + +struct sas_end_device { + struct sas_rphy rphy; + /* flags */ + unsigned ready_led_meaning:1; + unsigned tlr_supported:1; + unsigned tlr_enabled:1; + /* parameters */ + u16 I_T_nexus_loss_timeout; + u16 initiator_response_timeout; +}; +#define rphy_to_end_device(r) \ + container_of((r), struct sas_end_device, rphy) + +struct sas_expander_device { + int level; + int next_port_id; + + #define SAS_EXPANDER_VENDOR_ID_LEN 8 + char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1]; + #define SAS_EXPANDER_PRODUCT_ID_LEN 16 + char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1]; + #define SAS_EXPANDER_PRODUCT_REV_LEN 4 + char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1]; + #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8 + char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1]; + u16 component_id; + u8 component_revision_id; + + struct sas_rphy rphy; + +}; +#define rphy_to_expander_device(r) \ + container_of((r), struct sas_expander_device, rphy) + +struct sas_port { + struct device dev; + + int port_identifier; + int num_phys; + /* port flags */ + unsigned int is_backlink:1; + + /* the other end of the link */ + struct sas_rphy *rphy; + + struct mutex phy_list_mutex; + struct list_head phy_list; + struct list_head del_list; /* libsas only */ +}; + +#define dev_to_sas_port(d) \ + container_of((d), struct sas_port, dev) +#define transport_class_to_sas_port(dev) \ + dev_to_sas_port((dev)->parent) + +struct sas_phy_linkrates { + enum sas_linkrate maximum_linkrate; + enum sas_linkrate minimum_linkrate; +}; + +/* The functions by which the transport class and the driver communicate */ +struct sas_function_template { + int (*get_linkerrors)(struct sas_phy *); + int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); + int (*get_bay_identifier)(struct sas_rphy *); + int (*phy_reset)(struct sas_phy *, int); + int (*phy_enable)(struct sas_phy *, int); + int (*phy_setup)(struct sas_phy *); + void (*phy_release)(struct sas_phy *); + int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *); + void (*smp_handler)(struct bsg_job *, struct Scsi_Host *, + struct sas_rphy *); +}; + + +void sas_remove_children(struct device *); +extern void sas_remove_host(struct Scsi_Host *); + +extern struct sas_phy *sas_phy_alloc(struct device *, int); +extern void sas_phy_free(struct sas_phy *); +extern int sas_phy_add(struct sas_phy *); +extern void sas_phy_delete(struct sas_phy *); +extern int scsi_is_sas_phy(const struct device *); + +u64 sas_get_address(struct scsi_device *); +unsigned int sas_tlr_supported(struct scsi_device *); +unsigned int sas_is_tlr_enabled(struct scsi_device *); +void sas_disable_tlr(struct scsi_device *); +void sas_enable_tlr(struct scsi_device *); + +extern struct sas_rphy *sas_end_device_alloc(struct sas_port *); +extern struct sas_rphy *sas_expander_alloc(struct sas_port *, enum sas_device_type); +void sas_rphy_free(struct sas_rphy *); +extern int sas_rphy_add(struct sas_rphy *); +extern void sas_rphy_remove(struct sas_rphy *); +extern void sas_rphy_delete(struct sas_rphy *); +extern void sas_rphy_unlink(struct sas_rphy *); + +struct sas_port *sas_port_alloc(struct device *, int); +struct sas_port *sas_port_alloc_num(struct device *); +int sas_port_add(struct sas_port *); +void sas_port_free(struct sas_port *); +void sas_port_delete(struct sas_port *); +void sas_port_add_phy(struct sas_port *, struct sas_phy *); +void sas_port_delete_phy(struct sas_port *, struct sas_phy *); +void sas_port_mark_backlink(struct sas_port *); +int scsi_is_sas_port(const struct device *); +struct sas_phy *sas_port_get_phy(struct sas_port *port); +static inline void sas_port_put_phy(struct sas_phy *phy) +{ + if (phy) + put_device(&phy->dev); +} + +extern struct scsi_transport_template * +sas_attach_transport(struct sas_function_template *); +extern void sas_release_transport(struct scsi_transport_template *); +int sas_read_port_mode_page(struct scsi_device *); + +static inline int +scsi_is_sas_expander_device(struct device *dev) +{ + struct sas_rphy *rphy; + if (!scsi_is_sas_rphy(dev)) + return 0; + rphy = dev_to_rphy(dev); + return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE || + rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE; +} + +#define scsi_is_sas_phy_local(phy) scsi_is_host_device((phy)->dev.parent) + +#endif /* SCSI_TRANSPORT_SAS_H */ -- cgit v1.2.3