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(). ... --- arch/s390/include/asm/cio.h | 378 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 378 insertions(+) create mode 100644 arch/s390/include/asm/cio.h (limited to 'arch/s390/include/asm/cio.h') diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h new file mode 100644 index 000000000..1c4f585dd --- /dev/null +++ b/arch/s390/include/asm/cio.h @@ -0,0 +1,378 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Common interface for I/O on S/390 + */ +#ifndef _ASM_S390_CIO_H_ +#define _ASM_S390_CIO_H_ + +#include +#include +#include +#include + +#define LPM_ANYPATH 0xff +#define __MAX_CSSID 0 +#define __MAX_SUBCHANNEL 65535 +#define __MAX_SSID 3 + +#include + +/** + * struct ccw1 - channel command word + * @cmd_code: command code + * @flags: flags, like IDA addressing, etc. + * @count: byte count + * @cda: data address + * + * The ccw is the basic structure to build channel programs that perform + * operations with the device or the control unit. Only Format-1 channel + * command words are supported. + */ +struct ccw1 { + __u8 cmd_code; + __u8 flags; + __u16 count; + __u32 cda; +} __attribute__ ((packed,aligned(8))); + +/** + * struct ccw0 - channel command word + * @cmd_code: command code + * @cda: data address + * @flags: flags, like IDA addressing, etc. + * @reserved: will be ignored + * @count: byte count + * + * The format-0 ccw structure. + */ +struct ccw0 { + __u8 cmd_code; + __u32 cda : 24; + __u8 flags; + __u8 reserved; + __u16 count; +} __packed __aligned(8); + +#define CCW_FLAG_DC 0x80 +#define CCW_FLAG_CC 0x40 +#define CCW_FLAG_SLI 0x20 +#define CCW_FLAG_SKIP 0x10 +#define CCW_FLAG_PCI 0x08 +#define CCW_FLAG_IDA 0x04 +#define CCW_FLAG_SUSPEND 0x02 + +#define CCW_CMD_READ_IPL 0x02 +#define CCW_CMD_NOOP 0x03 +#define CCW_CMD_BASIC_SENSE 0x04 +#define CCW_CMD_TIC 0x08 +#define CCW_CMD_STLCK 0x14 +#define CCW_CMD_SENSE_PGID 0x34 +#define CCW_CMD_SUSPEND_RECONN 0x5B +#define CCW_CMD_RDC 0x64 +#define CCW_CMD_RELEASE 0x94 +#define CCW_CMD_SET_PGID 0xAF +#define CCW_CMD_SENSE_ID 0xE4 +#define CCW_CMD_DCTL 0xF3 + +#define SENSE_MAX_COUNT 0x20 + +/** + * struct erw - extended report word + * @res0: reserved + * @auth: authorization check + * @pvrf: path-verification-required flag + * @cpt: channel-path timeout + * @fsavf: failing storage address validity flag + * @cons: concurrent sense + * @scavf: secondary ccw address validity flag + * @fsaf: failing storage address format + * @scnt: sense count, if @cons == %1 + * @res16: reserved + */ +struct erw { + __u32 res0 : 3; + __u32 auth : 1; + __u32 pvrf : 1; + __u32 cpt : 1; + __u32 fsavf : 1; + __u32 cons : 1; + __u32 scavf : 1; + __u32 fsaf : 1; + __u32 scnt : 6; + __u32 res16 : 16; +} __attribute__ ((packed)); + +/** + * struct erw_eadm - EADM Subchannel extended report word + * @b: aob error + * @r: arsb error + */ +struct erw_eadm { + __u32 : 16; + __u32 b : 1; + __u32 r : 1; + __u32 : 14; +} __packed; + +/** + * struct sublog - subchannel logout area + * @res0: reserved + * @esf: extended status flags + * @lpum: last path used mask + * @arep: ancillary report + * @fvf: field-validity flags + * @sacc: storage access code + * @termc: termination code + * @devsc: device-status check + * @serr: secondary error + * @ioerr: i/o-error alert + * @seqc: sequence code + */ +struct sublog { + __u32 res0 : 1; + __u32 esf : 7; + __u32 lpum : 8; + __u32 arep : 1; + __u32 fvf : 5; + __u32 sacc : 2; + __u32 termc : 2; + __u32 devsc : 1; + __u32 serr : 1; + __u32 ioerr : 1; + __u32 seqc : 3; +} __attribute__ ((packed)); + +/** + * struct esw0 - Format 0 Extended Status Word (ESW) + * @sublog: subchannel logout + * @erw: extended report word + * @faddr: failing storage address + * @saddr: secondary ccw address + */ +struct esw0 { + struct sublog sublog; + struct erw erw; + __u32 faddr[2]; + __u32 saddr; +} __attribute__ ((packed)); + +/** + * struct esw1 - Format 1 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @zero16: reserved zeros + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw1 { + __u8 zero0; + __u8 lpum; + __u16 zero16; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct esw2 - Format 2 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @dcti: device-connect-time interval + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw2 { + __u8 zero0; + __u8 lpum; + __u16 dcti; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct esw3 - Format 3 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @res: reserved + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw3 { + __u8 zero0; + __u8 lpum; + __u16 res; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct esw_eadm - EADM Subchannel Extended Status Word (ESW) + * @sublog: subchannel logout + * @erw: extended report word + */ +struct esw_eadm { + __u32 sublog; + struct erw_eadm erw; + __u32 : 32; + __u32 : 32; + __u32 : 32; +} __packed; + +/** + * struct irb - interruption response block + * @scsw: subchannel status word + * @esw: extended status word + * @ecw: extended control word + * + * The irb that is handed to the device driver when an interrupt occurs. For + * solicited interrupts, the common I/O layer already performs checks whether + * a field is valid; a field not being valid is always passed as %0. + * If a unit check occurred, @ecw may contain sense data; this is retrieved + * by the common I/O layer itself if the device doesn't support concurrent + * sense (so that the device driver never needs to perform basic sense itself). + * For unsolicited interrupts, the irb is passed as-is (expect for sense data, + * if applicable). + */ +struct irb { + union scsw scsw; + union { + struct esw0 esw0; + struct esw1 esw1; + struct esw2 esw2; + struct esw3 esw3; + struct esw_eadm eadm; + } esw; + __u8 ecw[32]; +} __attribute__ ((packed,aligned(4))); + +/** + * struct ciw - command information word (CIW) layout + * @et: entry type + * @reserved: reserved bits + * @ct: command type + * @cmd: command code + * @count: command count + */ +struct ciw { + __u32 et : 2; + __u32 reserved : 2; + __u32 ct : 4; + __u32 cmd : 8; + __u32 count : 16; +} __attribute__ ((packed)); + +#define CIW_TYPE_RCD 0x0 /* read configuration data */ +#define CIW_TYPE_SII 0x1 /* set interface identifier */ +#define CIW_TYPE_RNI 0x2 /* read node identifier */ + +/* + * Node Descriptor as defined in SA22-7204, "Common I/O-Device Commands" + */ + +#define ND_VALIDITY_VALID 0 +#define ND_VALIDITY_OUTDATED 1 +#define ND_VALIDITY_INVALID 2 + +struct node_descriptor { + /* Flags. */ + union { + struct { + u32 validity:3; + u32 reserved:5; + } __packed; + u8 byte0; + } __packed; + + /* Node parameters. */ + u32 params:24; + + /* Node ID. */ + char type[6]; + char model[3]; + char manufacturer[3]; + char plant[2]; + char seq[12]; + u16 tag; +} __packed; + +/* + * Flags used as input parameters for do_IO() + */ +#define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */ +#define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */ +#define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */ + /* ... for suspended CCWs */ +/* Device or subchannel gone. */ +#define CIO_GONE 0x0001 +/* No path to device. */ +#define CIO_NO_PATH 0x0002 +/* Device has appeared. */ +#define CIO_OPER 0x0004 +/* Sick revalidation of device. */ +#define CIO_REVALIDATE 0x0008 +/* Device did not respond in time. */ +#define CIO_BOXED 0x0010 + +/** + * struct ccw_dev_id - unique identifier for ccw devices + * @ssid: subchannel set id + * @devno: device number + * + * This structure is not directly based on any hardware structure. The + * hardware identifies a device by its device number and its subchannel, + * which is in turn identified by its id. In order to get a unique identifier + * for ccw devices across subchannel sets, @struct ccw_dev_id has been + * introduced. + */ +struct ccw_dev_id { + u8 ssid; + u16 devno; +}; + +/** + * ccw_dev_id_is_equal() - compare two ccw_dev_ids + * @dev_id1: a ccw_dev_id + * @dev_id2: another ccw_dev_id + * Returns: + * %1 if the two structures are equal field-by-field, + * %0 if not. + * Context: + * any + */ +static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, + struct ccw_dev_id *dev_id2) +{ + if ((dev_id1->ssid == dev_id2->ssid) && + (dev_id1->devno == dev_id2->devno)) + return 1; + return 0; +} + +/** + * pathmask_to_pos() - find the position of the left-most bit in a pathmask + * @mask: pathmask with at least one bit set + */ +static inline u8 pathmask_to_pos(u8 mask) +{ + return 8 - ffs(mask); +} + +extern void css_schedule_reprobe(void); + +extern void *cio_dma_zalloc(size_t size); +extern void cio_dma_free(void *cpu_addr, size_t size); +extern struct device *cio_get_dma_css_dev(void); + +void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev, + size_t size); +void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size); +void cio_gp_dma_destroy(struct gen_pool *gp_dma, struct device *dma_dev); +struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages); + +/* Function from drivers/s390/cio/chsc.c */ +int chsc_sstpc(void *page, unsigned int op, u16 ctrl, long *clock_delta); +int chsc_sstpi(void *page, void *result, size_t size); +int chsc_stzi(void *page, void *result, size_t size); +int chsc_sgib(u32 origin); +int chsc_scud(u16 cu, u64 *esm, u8 *esm_valid); + +#endif -- cgit v1.2.3