Merge tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - BPF:
      - add syscall program type and libbpf support for generating
        instructions and bindings for in-kernel BPF loaders (BPF loaders
        for BPF), this is a stepping stone for signed BPF programs
      - infrastructure to migrate TCP child sockets from one listener to
        another in the same reuseport group/map to improve flexibility
        of service hand-off/restart
      - add broadcast support to XDP redirect

   - allow bypass of the lockless qdisc to improving performance (for
     pktgen: +23% with one thread, +44% with 2 threads)

   - add a simpler version of "DO_ONCE()" which does not require jump
     labels, intended for slow-path usage

   - virtio/vsock: introduce SOCK_SEQPACKET support

   - add getsocketopt to retrieve netns cookie

   - ip: treat lowest address of a IPv4 subnet as ordinary unicast
     address allowing reclaiming of precious IPv4 addresses

   - ipv6: use prandom_u32() for ID generation

   - ip: add support for more flexible field selection for hashing
     across multi-path routes (w/ offload to mlxsw)

   - icmp: add support for extended RFC 8335 PROBE (ping)

   - seg6: add support for SRv6 End.DT46 behavior

   - mptcp:
      - DSS checksum support (RFC 8684) to detect middlebox meddling
      - support Connection-time 'C' flag
      - time stamping support

   - sctp: packetization Layer Path MTU Discovery (RFC 8899)

   - xfrm: speed up state addition with seq set

   - WiFi:
      - hidden AP discovery on 6 GHz and other HE 6 GHz improvements
      - aggregation handling improvements for some drivers
      - minstrel improvements for no-ack frames
      - deferred rate control for TXQs to improve reaction times
      - switch from round robin to virtual time-based airtime scheduler

   - add trace points:
      - tcp checksum errors
      - openvswitch - action execution, upcalls
      - socket errors via sk_error_report

  Device APIs:

   - devlink: add rate API for hierarchical control of max egress rate
     of virtual devices (VFs, SFs etc.)

   - don't require RCU read lock to be held around BPF hooks in NAPI
     context

   - page_pool: generic buffer recycling

  New hardware/drivers:

   - mobile:
      - iosm: PCIe Driver for Intel M.2 Modem
      - support for Qualcomm MSM8998 (ipa)

   - WiFi: Qualcomm QCN9074 and WCN6855 PCI devices

   - sparx5: Microchip SparX-5 family of Enterprise Ethernet switches

   - Mellanox BlueField Gigabit Ethernet (control NIC of the DPU)

   - NXP SJA1110 Automotive Ethernet 10-port switch

   - Qualcomm QCA8327 switch support (qca8k)

   - Mikrotik 10/25G NIC (atl1c)

  Driver changes:

   - ACPI support for some MDIO, MAC and PHY devices from Marvell and
     NXP (our first foray into MAC/PHY description via ACPI)

   - HW timestamping (PTP) support: bnxt_en, ice, sja1105, hns3, tja11xx

   - Mellanox/Nvidia NIC (mlx5)
      - NIC VF offload of L2 bridging
      - support IRQ distribution to Sub-functions

   - Marvell (prestera):
      - add flower and match all
      - devlink trap
      - link aggregation

   - Netronome (nfp): connection tracking offload

   - Intel 1GE (igc): add AF_XDP support

   - Marvell DPU (octeontx2): ingress ratelimit offload

   - Google vNIC (gve): new ring/descriptor format support

   - Qualcomm mobile (rmnet & ipa): inline checksum offload support

   - MediaTek WiFi (mt76)
      - mt7915 MSI support
      - mt7915 Tx status reporting
      - mt7915 thermal sensors support
      - mt7921 decapsulation offload
      - mt7921 enable runtime pm and deep sleep

   - Realtek WiFi (rtw88)
      - beacon filter support
      - Tx antenna path diversity support
      - firmware crash information via devcoredump

   - Qualcomm WiFi (wcn36xx)
      - Wake-on-WLAN support with magic packets and GTK rekeying

   - Micrel PHY (ksz886x/ksz8081): add cable test support"

* tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2168 commits)
  tcp: change ICSK_CA_PRIV_SIZE definition
  tcp_yeah: check struct yeah size at compile time
  gve: DQO: Fix off by one in gve_rx_dqo()
  stmmac: intel: set PCI_D3hot in suspend
  stmmac: intel: Enable PHY WOL option in EHL
  net: stmmac: option to enable PHY WOL with PMT enabled
  net: say "local" instead of "static" addresses in ndo_dflt_fdb_{add,del}
  net: use netdev_info in ndo_dflt_fdb_{add,del}
  ptp: Set lookup cookie when creating a PTP PPS source.
  net: sock: add trace for socket errors
  net: sock: introduce sk_error_report
  net: dsa: replay the local bridge FDB entries pointing to the bridge dev too
  net: dsa: ensure during dsa_fdb_offload_notify that dev_hold and dev_put are on the same dev
  net: dsa: include fdb entries pointing to bridge in the host fdb list
  net: dsa: include bridge addresses which are local in the host fdb list
  net: dsa: sync static FDB entries on foreign interfaces to hardware
  net: dsa: install the host MDB and FDB entries in the master's RX filter
  net: dsa: reference count the FDB addresses at the cross-chip notifier level
  net: dsa: introduce a separate cross-chip notifier type for host FDBs
  net: dsa: reference count the MDB entries at the cross-chip notifier level
  ...

1 files changed, 209 insertions, 0 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.h b/drivers/net/wwan/iosm/iosm_ipc_pcie.h
new file mode 100644
index 000000000000..7d1f0cd7364c
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.h
@@ -0,0 +1,209 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020-21 Intel Corporation.
+ */
+
+#ifndef IOSM_IPC_PCIE_H
+#define IOSM_IPC_PCIE_H
+
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/skbuff.h>
+
+#include "iosm_ipc_irq.h"
+
+/* Device ID */
+#define INTEL_CP_DEVICE_7560_ID 0x7560
+
+/* Define for BAR area usage */
+#define IPC_DOORBELL_BAR0 0
+#define IPC_SCRATCHPAD_BAR2 2
+
+/* Defines for DOORBELL registers information */
+#define IPC_DOORBELL_CH_OFFSET BIT(5)
+#define IPC_WRITE_PTR_REG_0 BIT(4)
+#define IPC_CAPTURE_PTR_REG_0 BIT(3)
+
+/* Number of MSI used for IPC */
+#define IPC_MSI_VECTORS 1
+
+/* Total number of Maximum IPC IRQ vectors used for IPC */
+#define IPC_IRQ_VECTORS IPC_MSI_VECTORS
+
+/**
+ * enum ipc_pcie_sleep_state - Enum type to different sleep state transitions
+ * @IPC_PCIE_D0L12:	Put the sleep state in D0L12
+ * @IPC_PCIE_D3L2:	Put the sleep state in D3L2
+ */
+enum ipc_pcie_sleep_state {
+	IPC_PCIE_D0L12,
+	IPC_PCIE_D3L2,
+};
+
+/**
+ * struct iosm_pcie - IPC_PCIE struct.
+ * @pci:			Address of the device description
+ * @dev:			Pointer to generic device structure
+ * @ipc_regs:			Remapped CP doorbell address of the irq register
+ *				set, to fire the doorbell irq.
+ * @scratchpad:			Remapped CP scratchpad address, to send the
+ *				configuration. tuple and the IPC descriptors
+ *				to CP in the ROM phase. The config tuple
+ *				information are saved on the MSI scratchpad.
+ * @imem:			Pointer to imem data struct
+ * @ipc_regs_bar_nr:		BAR number to be used for IPC doorbell
+ * @scratchpad_bar_nr:		BAR number to be used for Scratchpad
+ * @nvec:			number of requested irq vectors
+ * @doorbell_reg_offset:	doorbell_reg_offset
+ * @doorbell_write:		doorbell write register
+ * @doorbell_capture:		doorbell capture resgister
+ * @suspend:			S2IDLE sleep/active
+ * @d3l2_support:		Read WWAN RTD3 BIOS setting for D3L2 support
+ */
+struct iosm_pcie {
+	struct pci_dev *pci;
+	struct device *dev;
+	void __iomem *ipc_regs;
+	void __iomem *scratchpad;
+	struct iosm_imem *imem;
+	int ipc_regs_bar_nr;
+	int scratchpad_bar_nr;
+	int nvec;
+	u32 doorbell_reg_offset;
+	u32 doorbell_write;
+	u32 doorbell_capture;
+	unsigned long suspend;
+	enum ipc_pcie_sleep_state d3l2_support;
+};
+
+/**
+ * struct ipc_skb_cb - Struct definition of the socket buffer which is mapped to
+ *		       the cb field of sbk
+ * @mapping:	Store physical or IOVA mapped address of skb virtual add.
+ * @direction:	DMA direction
+ * @len:	Length of the DMA mapped region
+ * @op_type:    Expected values are defined about enum ipc_ul_usr_op.
+ */
+struct ipc_skb_cb {
+	dma_addr_t mapping;
+	int direction;
+	int len;
+	u8 op_type;
+};
+
+/**
+ * enum ipc_ul_usr_op - Control operation to execute the right action on
+ *			the user interface.
+ * @UL_USR_OP_BLOCKED:	The uplink app was blocked until CP confirms that the
+ *			uplink buffer was consumed triggered by the IRQ.
+ * @UL_MUX_OP_ADB:	In MUX mode the UL ADB shall be addedd to the free list.
+ * @UL_DEFAULT:		SKB in non muxing mode
+ */
+enum ipc_ul_usr_op {
+	UL_USR_OP_BLOCKED,
+	UL_MUX_OP_ADB,
+	UL_DEFAULT,
+};
+
+/**
+ * ipc_pcie_addr_map - Maps the kernel's virtual address to either IOVA
+ *		       address space or Physical address space, the mapping is
+ *		       stored in the skb's cb.
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ * @data:	Skb mem containing data
+ * @size:	Data size
+ * @mapping:	Dma mapping address
+ * @direction:	Data direction
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_pcie_addr_map(struct iosm_pcie *ipc_pcie, unsigned char *data,
+		      size_t size, dma_addr_t *mapping, int direction);
+
+/**
+ * ipc_pcie_addr_unmap - Unmaps the skb memory region from IOVA address space
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ * @size:	Data size
+ * @mapping:	Dma mapping address
+ * @direction:	Data direction
+ */
+void ipc_pcie_addr_unmap(struct iosm_pcie *ipc_pcie, size_t size,
+			 dma_addr_t mapping, int direction);
+
+/**
+ * ipc_pcie_alloc_skb - Allocate an uplink SKB for the given size.
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ * @size:	Size of the SKB required.
+ * @flags:	Allocation flags
+ * @mapping:	Copies either mapped IOVA add. or converted Phy address
+ * @direction:	DMA data direction
+ * @headroom:	Header data offset
+ *
+ * Returns: Pointer to ipc_skb on Success, NULL on failure.
+ */
+struct sk_buff *ipc_pcie_alloc_skb(struct iosm_pcie *ipc_pcie, size_t size,
+				   gfp_t flags, dma_addr_t *mapping,
+				   int direction, size_t headroom);
+
+/**
+ * ipc_pcie_alloc_local_skb - Allocate a local SKB for the given size.
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ * @flags:	Allocation flags
+ * @size:	Size of the SKB required.
+ *
+ * Returns: Pointer to ipc_skb on Success, NULL on failure.
+ */
+struct sk_buff *ipc_pcie_alloc_local_skb(struct iosm_pcie *ipc_pcie,
+					 gfp_t flags, size_t size);
+
+/**
+ * ipc_pcie_kfree_skb - Free skb allocated by ipc_pcie_alloc_*_skb().
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ * @skb:	Pointer to the skb
+ */
+void ipc_pcie_kfree_skb(struct iosm_pcie *ipc_pcie, struct sk_buff *skb);
+
+/**
+ * ipc_pcie_check_data_link_active - Check Data Link Layer Active
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ *
+ * Returns: true if active, otherwise false
+ */
+bool ipc_pcie_check_data_link_active(struct iosm_pcie *ipc_pcie);
+
+/**
+ * ipc_pcie_suspend - Callback invoked by pm_runtime_suspend. It decrements
+ *		     the device's usage count then, carry out a suspend,
+ *		     either synchronous or asynchronous.
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_pcie_suspend(struct iosm_pcie *ipc_pcie);
+
+/**
+ * ipc_pcie_resume - Callback invoked by pm_runtime_resume. It increments
+ *		    the device's usage count then, carry out a resume,
+ *		    either synchronous or asynchronous.
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_pcie_resume(struct iosm_pcie *ipc_pcie);
+
+/**
+ * ipc_pcie_check_aspm_enabled - Check if ASPM L1 is already enabled
+ * @ipc_pcie:			 Pointer to struct iosm_pcie
+ * @parent:			 True if checking ASPM L1 for parent else false
+ *
+ * Returns: true if ASPM is already enabled else false
+ */
+bool ipc_pcie_check_aspm_enabled(struct iosm_pcie *ipc_pcie,
+				 bool parent);
+/**
+ * ipc_pcie_config_aspm - Configure ASPM L1
+ * @ipc_pcie:	Pointer to struct iosm_pcie
+ */
+void ipc_pcie_config_aspm(struct iosm_pcie *ipc_pcie);
+
+#endif