Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 284 insertions, 0 deletions

diff --git a/drivers/scsi/megaraid/mega_common.h b/drivers/scsi/megaraid/mega_common.h
new file mode 100644
index 000000000..2ad0aa2f8
--- /dev/null
+++ b/drivers/scsi/megaraid/mega_common.h
@@ -0,0 +1,284 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *
+ *			Linux MegaRAID device driver
+ *
+ * Copyright (c) 2003-2004  LSI Logic Corporation.
+ *
+ * FILE		: mega_common.h
+ *
+ * Libaray of common routine used by all low-level megaraid drivers
+ */
+
+#ifndef _MEGA_COMMON_H_
+#define _MEGA_COMMON_H_
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/list.h>
+#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+
+#define LSI_MAX_CHANNELS		16
+#define LSI_MAX_LOGICAL_DRIVES_64LD	(64+1)
+
+#define HBA_SIGNATURE_64_BIT		0x299
+#define PCI_CONF_AMISIG64		0xa4
+
+#define MEGA_SCSI_INQ_EVPD		1
+#define MEGA_INVALID_FIELD_IN_CDB	0x24
+
+
+/**
+ * scb_t - scsi command control block
+ * @ccb			: command control block for individual driver
+ * @list		: list of control blocks
+ * @gp			: general purpose field for LLDs
+ * @sno			: all SCBs have a serial number
+ * @scp			: associated scsi command
+ * @state		: current state of scb
+ * @dma_dir		: direction of data transfer
+ * @dma_type		: transfer with sg list, buffer, or no data transfer
+ * @dev_channel		: actual channel on the device
+ * @dev_target		: actual target on the device
+ * @status		: completion status
+ *
+ * This is our central data structure to issue commands the each driver.
+ * Driver specific data structures are maintained in the ccb field.
+ * scb provides a field 'gp', which can be used by LLD for its own purposes
+ *
+ * dev_channel and dev_target must be initialized with the actual channel and
+ * target on the controller.
+ */
+typedef struct {
+	caddr_t			ccb;
+	struct list_head	list;
+	unsigned long		gp;
+	unsigned int		sno;
+	struct scsi_cmnd	*scp;
+	uint32_t		state;
+	uint32_t		dma_direction;
+	uint32_t		dma_type;
+	uint16_t		dev_channel;
+	uint16_t		dev_target;
+	uint32_t		status;
+} scb_t;
+
+/*
+ * SCB states as it transitions from one state to another
+ */
+#define SCB_FREE	0x0000	/* on the free list */
+#define SCB_ACTIVE	0x0001	/* off the free list */
+#define SCB_PENDQ	0x0002	/* on the pending queue */
+#define SCB_ISSUED	0x0004	/* issued - owner f/w */
+#define SCB_ABORT	0x0008	/* Got an abort for this one */
+#define SCB_RESET	0x0010	/* Got a reset for this one */
+
+/*
+ * DMA types for scb
+ */
+#define MRAID_DMA_NONE	0x0000	/* no data transfer for this command */
+#define MRAID_DMA_WSG	0x0001	/* data transfer using a sg list */
+#define MRAID_DMA_WBUF	0x0002	/* data transfer using a contiguous buffer */
+
+
+/**
+ * struct adapter_t - driver's initialization structure
+ * @aram dpc_h			: tasklet handle
+ * @pdev			: pci configuration pointer for kernel
+ * @host			: pointer to host structure of mid-layer
+ * @lock			: synchronization lock for mid-layer and driver
+ * @quiescent			: driver is quiescent for now.
+ * @outstanding_cmds		: number of commands pending in the driver
+ * @kscb_list			: pointer to the bulk of SCBs pointers for IO
+ * @kscb_pool			: pool of free scbs for IO
+ * @kscb_pool_lock		: lock for pool of free scbs
+ * @pend_list			: pending commands list
+ * @pend_list_lock		: exclusion lock for pending commands list
+ * @completed_list		: list of completed commands
+ * @completed_list_lock		: exclusion lock for list of completed commands
+ * @sglen			: max sg elements supported
+ * @device_ids			: to convert kernel device addr to our devices.
+ * @raid_device			: raid adapter specific pointer
+ * @max_channel			: maximum channel number supported - inclusive
+ * @max_target			: max target supported - inclusive
+ * @max_lun			: max lun supported - inclusive
+ * @unique_id			: unique identifier for each adapter
+ * @irq				: IRQ for this adapter
+ * @ito				: internal timeout value, (-1) means no timeout
+ * @ibuf			: buffer to issue internal commands
+ * @ibuf_dma_h			: dma handle for the above buffer
+ * @uscb_list			: SCB pointers for user cmds, common mgmt module
+ * @uscb_pool			: pool of SCBs for user commands
+ * @uscb_pool_lock		: exclusion lock for these SCBs
+ * @max_cmds			: max outstanding commands
+ * @fw_version			: firmware version
+ * @bios_version		: bios version
+ * @max_cdb_sz			: biggest CDB size supported.
+ * @ha				: is high availability present - clustering
+ * @init_id			: initiator ID, the default value should be 7
+ * @max_sectors			: max sectors per request
+ * @cmd_per_lun			: max outstanding commands per LUN
+ * @being_detached		: set when unloading, no more mgmt calls
+ *
+ *
+ * mraid_setup_device_map() can be called anytime after the device map is
+ * available and MRAID_GET_DEVICE_MAP() can be called whenever the mapping is
+ * required, usually from LLD's queue entry point. The formar API sets up the
+ * MRAID_IS_LOGICAL(adapter_t *, struct scsi_cmnd *) to find out if the
+ * device in question is a logical drive.
+ *
+ * quiescent flag should be set by the driver if it is not accepting more
+ * commands
+ *
+ * NOTE: The fields of this structures are placed to minimize cache misses
+ */
+
+// amount of space required to store the bios and firmware version strings
+#define VERSION_SIZE	16
+
+typedef struct {
+	struct tasklet_struct	dpc_h;
+	struct pci_dev		*pdev;
+	struct Scsi_Host	*host;
+	spinlock_t		lock;
+	uint8_t			quiescent;
+	int			outstanding_cmds;
+	scb_t			*kscb_list;
+	struct list_head	kscb_pool;
+	spinlock_t		kscb_pool_lock;
+	struct list_head	pend_list;
+	spinlock_t		pend_list_lock;
+	struct list_head	completed_list;
+	spinlock_t		completed_list_lock;
+	uint16_t		sglen;
+	int			device_ids[LSI_MAX_CHANNELS]
+					[LSI_MAX_LOGICAL_DRIVES_64LD];
+	caddr_t			raid_device;
+	uint8_t			max_channel;
+	uint16_t		max_target;
+	uint8_t			max_lun;
+
+	uint32_t		unique_id;
+	int			irq;
+	uint8_t			ito;
+	caddr_t			ibuf;
+	dma_addr_t		ibuf_dma_h;
+	scb_t			*uscb_list;
+	struct list_head	uscb_pool;
+	spinlock_t		uscb_pool_lock;
+	int			max_cmds;
+	uint8_t			fw_version[VERSION_SIZE];
+	uint8_t			bios_version[VERSION_SIZE];
+	uint8_t			max_cdb_sz;
+	uint8_t			ha;
+	uint16_t		init_id;
+	uint16_t		max_sectors;
+	uint16_t		cmd_per_lun;
+	atomic_t		being_detached;
+} adapter_t;
+
+#define SCSI_FREE_LIST_LOCK(adapter)	(&adapter->kscb_pool_lock)
+#define USER_FREE_LIST_LOCK(adapter)	(&adapter->uscb_pool_lock)
+#define PENDING_LIST_LOCK(adapter)	(&adapter->pend_list_lock)
+#define COMPLETED_LIST_LOCK(adapter)	(&adapter->completed_list_lock)
+
+
+// conversion from scsi command
+#define SCP2HOST(scp)			(scp)->device->host	// to host
+#define SCP2HOSTDATA(scp)		SCP2HOST(scp)->hostdata	// to soft state
+#define SCP2CHANNEL(scp)		(scp)->device->channel	// to channel
+#define SCP2TARGET(scp)			(scp)->device->id	// to target
+#define SCP2LUN(scp)			(u32)(scp)->device->lun	// to LUN
+
+// generic macro to convert scsi command and host to controller's soft state
+#define SCSIHOST2ADAP(host)	(((caddr_t *)(host->hostdata))[0])
+#define SCP2ADAPTER(scp)	(adapter_t *)SCSIHOST2ADAP(SCP2HOST(scp))
+
+
+#define MRAID_IS_LOGICAL(adp, scp)	\
+	(SCP2CHANNEL(scp) == (adp)->max_channel) ? 1 : 0
+
+#define MRAID_IS_LOGICAL_SDEV(adp, sdev)	\
+	(sdev->channel == (adp)->max_channel) ? 1 : 0
+
+/**
+ * MRAID_GET_DEVICE_MAP - device ids
+ * @adp			: adapter's soft state
+ * @scp			: mid-layer scsi command pointer
+ * @p_chan		: physical channel on the controller
+ * @target		: target id of the device or logical drive number
+ * @islogical		: set if the command is for the logical drive
+ *
+ * Macro to retrieve information about device class, logical or physical and
+ * the corresponding physical channel and target or logical drive number
+ */
+#define MRAID_GET_DEVICE_MAP(adp, scp, p_chan, target, islogical)	\
+	/*								\
+	 * Is the request coming for the virtual channel		\
+	 */								\
+	islogical = MRAID_IS_LOGICAL(adp, scp);				\
+									\
+	/*								\
+	 * Get an index into our table of drive ids mapping		\
+	 */								\
+	if (islogical) {						\
+		p_chan = 0xFF;						\
+		target =						\
+		(adp)->device_ids[(adp)->max_channel][SCP2TARGET(scp)];	\
+	}								\
+	else {								\
+		p_chan = ((adp)->device_ids[SCP2CHANNEL(scp)]		\
+					[SCP2TARGET(scp)] >> 8) & 0xFF;	\
+		target = ((adp)->device_ids[SCP2CHANNEL(scp)]		\
+					[SCP2TARGET(scp)] & 0xFF);	\
+	}
+
+/*
+ * ### Helper routines ###
+ */
+#define LSI_DBGLVL mraid_debug_level	// each LLD must define a global
+ 					// mraid_debug_level
+
+#ifdef DEBUG
+#if defined (_ASSERT_PANIC)
+#define ASSERT_ACTION	panic
+#else
+#define ASSERT_ACTION	printk
+#endif
+
+#define ASSERT(expression)						\
+	if (!(expression)) {						\
+	ASSERT_ACTION("assertion failed:(%s), file: %s, line: %d:%s\n",	\
+			#expression, __FILE__, __LINE__, __func__);	\
+	}
+#else
+#define ASSERT(expression)
+#endif
+
+/**
+ * struct mraid_pci_blk - structure holds DMA memory block info
+ * @vaddr		: virtual address to a memory block
+ * @dma_addr		: DMA handle to a memory block
+ *
+ * This structure is filled up for the caller. It is the responsibilty of the
+ * caller to allocate this array big enough to store addresses for all
+ * requested elements
+ */
+struct mraid_pci_blk {
+	caddr_t		vaddr;
+	dma_addr_t	dma_addr;
+};
+
+#endif // _MEGA_COMMON_H_