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, 237 insertions, 0 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_protocol.h b/drivers/net/wwan/iosm/iosm_ipc_protocol.h
new file mode 100644
index 000000000000..9b3a6d86ece7
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_protocol.h
@@ -0,0 +1,237 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020-21 Intel Corporation.
+ */
+
+#ifndef IOSM_IPC_PROTOCOL_H
+#define IOSM_IPC_PROTOCOL_H
+
+#include "iosm_ipc_imem.h"
+#include "iosm_ipc_pm.h"
+#include "iosm_ipc_protocol_ops.h"
+
+/* Trigger the doorbell interrupt on CP. */
+#define IPC_DOORBELL_IRQ_HPDA 0
+#define IPC_DOORBELL_IRQ_IPC 1
+#define IPC_DOORBELL_IRQ_SLEEP 2
+
+/* IRQ vector number. */
+#define IPC_DEVICE_IRQ_VECTOR 0
+#define IPC_MSG_IRQ_VECTOR 0
+#define IPC_UL_PIPE_IRQ_VECTOR 0
+#define IPC_DL_PIPE_IRQ_VECTOR 0
+
+#define IPC_MEM_MSG_ENTRIES 128
+
+/* Default time out for sending IPC messages like open pipe, close pipe etc.
+ * during run mode.
+ *
+ * If the message interface lock to CP times out, the link to CP is broken.
+ * mode : run mode (IPC_MEM_EXEC_STAGE_RUN)
+ * unit : milliseconds
+ */
+#define IPC_MSG_COMPLETE_RUN_DEFAULT_TIMEOUT 500 /* 0.5 seconds */
+
+/* Default time out for sending IPC messages like open pipe, close pipe etc.
+ * during boot mode.
+ *
+ * If the message interface lock to CP times out, the link to CP is broken.
+ * mode : boot mode
+ * (IPC_MEM_EXEC_STAGE_BOOT | IPC_MEM_EXEC_STAGE_PSI | IPC_MEM_EXEC_STAGE_EBL)
+ * unit : milliseconds
+ */
+#define IPC_MSG_COMPLETE_BOOT_DEFAULT_TIMEOUT 500 /* 0.5 seconds */
+
+/**
+ * struct ipc_protocol_context_info - Structure of the context info
+ * @device_info_addr:		64 bit address to device info
+ * @head_array:			64 bit address to head pointer arr for the pipes
+ * @tail_array:			64 bit address to tail pointer arr for the pipes
+ * @msg_head:			64 bit address to message head pointer
+ * @msg_tail:			64 bit address to message tail pointer
+ * @msg_ring_addr:		64 bit pointer to the message ring buffer
+ * @msg_ring_entries:		This field provides the number of entries which
+ *				the MR can hold
+ * @msg_irq_vector:		This field provides the IRQ which shall be
+ *				generated by the EP device when generating
+ *				completion for Messages.
+ * @device_info_irq_vector:	This field provides the IRQ which shall be
+ *				generated by the EP dev after updating Dev. Info
+ */
+struct ipc_protocol_context_info {
+	phys_addr_t device_info_addr;
+	phys_addr_t head_array;
+	phys_addr_t tail_array;
+	phys_addr_t msg_head;
+	phys_addr_t msg_tail;
+	phys_addr_t msg_ring_addr;
+	__le16 msg_ring_entries;
+	u8 msg_irq_vector;
+	u8 device_info_irq_vector;
+};
+
+/**
+ * struct ipc_protocol_device_info - Structure for the device information
+ * @execution_stage:		CP execution stage
+ * @ipc_status:			IPC states
+ * @device_sleep_notification:	Requested device pm states
+ */
+struct ipc_protocol_device_info {
+	__le32 execution_stage;
+	__le32 ipc_status;
+	__le32 device_sleep_notification;
+};
+
+/**
+ * struct ipc_protocol_ap_shm - Protocol Shared Memory Structure
+ * @ci:			Context information struct
+ * @device_info:	Device information struct
+ * @msg_head:		Point to msg head
+ * @head_array:		Array of head pointer
+ * @msg_tail:		Point to msg tail
+ * @tail_array:		Array of tail pointer
+ * @msg_ring:		Circular buffers for the read/tail and write/head
+ *			indeces.
+ */
+struct ipc_protocol_ap_shm {
+	struct ipc_protocol_context_info ci;
+	struct ipc_protocol_device_info device_info;
+	__le32 msg_head;
+	__le32 head_array[IPC_MEM_MAX_PIPES];
+	__le32 msg_tail;
+	__le32 tail_array[IPC_MEM_MAX_PIPES];
+	union ipc_mem_msg_entry msg_ring[IPC_MEM_MSG_ENTRIES];
+};
+
+/**
+ * struct iosm_protocol - Structure for IPC protocol.
+ * @p_ap_shm:		Pointer to Protocol Shared Memory Structure
+ * @pm:			Instance to struct iosm_pm
+ * @pcie:		Pointer to struct iosm_pcie
+ * @imem:		Pointer to struct iosm_imem
+ * @rsp_ring:		Array of OS completion objects to be triggered once CP
+ *			acknowledges a request in the message ring
+ * @dev:		Pointer to device structure
+ * @phy_ap_shm:		Physical/Mapped representation of the shared memory info
+ * @old_msg_tail:	Old msg tail ptr, until AP has handled ACK's from CP
+ */
+struct iosm_protocol {
+	struct ipc_protocol_ap_shm *p_ap_shm;
+	struct iosm_pm pm;
+	struct iosm_pcie *pcie;
+	struct iosm_imem *imem;
+	struct ipc_rsp *rsp_ring[IPC_MEM_MSG_ENTRIES];
+	struct device *dev;
+	phys_addr_t phy_ap_shm;
+	u32 old_msg_tail;
+};
+
+/**
+ * struct ipc_call_msg_send_args - Structure for message argument for
+ *				   tasklet function.
+ * @prep_args:		Arguments for message preparation function
+ * @response:		Can be NULL if result can be ignored
+ * @msg_type:		Message Type
+ */
+struct ipc_call_msg_send_args {
+	union ipc_msg_prep_args *prep_args;
+	struct ipc_rsp *response;
+	enum ipc_msg_prep_type msg_type;
+};
+
+/**
+ * ipc_protocol_tq_msg_send - prepare the msg and send to CP
+ * @ipc_protocol:	Pointer to ipc_protocol instance
+ * @msg_type:		Message type
+ * @prep_args:		Message arguments
+ * @response:		Pointer to a response object which has a
+ *			completion object and return code.
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_protocol_tq_msg_send(struct iosm_protocol *ipc_protocol,
+			     enum ipc_msg_prep_type msg_type,
+			     union ipc_msg_prep_args *prep_args,
+			     struct ipc_rsp *response);
+
+/**
+ * ipc_protocol_msg_send - Send ipc control message to CP and wait for response
+ * @ipc_protocol:	Pointer to ipc_protocol instance
+ * @prep:		Message type
+ * @prep_args:		Message arguments
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_protocol_msg_send(struct iosm_protocol *ipc_protocol,
+			  enum ipc_msg_prep_type prep,
+			  union ipc_msg_prep_args *prep_args);
+
+/**
+ * ipc_protocol_suspend - Signal to CP that host wants to go to sleep (suspend).
+ * @ipc_protocol:	Pointer to ipc_protocol instance
+ *
+ * Returns: true if host can suspend, false if suspend must be aborted.
+ */
+bool ipc_protocol_suspend(struct iosm_protocol *ipc_protocol);
+
+/**
+ * ipc_protocol_s2idle_sleep - Call PM function to set PM variables in s2idle
+ *			       sleep/active case
+ * @ipc_protocol:	Pointer to ipc_protocol instance
+ * @sleep:		True for sleep/False for active
+ */
+void ipc_protocol_s2idle_sleep(struct iosm_protocol *ipc_protocol, bool sleep);
+
+/**
+ * ipc_protocol_resume - Signal to CP that host wants to resume operation.
+ * @ipc_protocol:	Pointer to ipc_protocol instance
+ *
+ * Returns: true if host can resume, false if there is a problem.
+ */
+bool ipc_protocol_resume(struct iosm_protocol *ipc_protocol);
+
+/**
+ * ipc_protocol_pm_dev_sleep_handle - Handles the Device Sleep state change
+ *				      notification.
+ * @ipc_protocol:	Pointer to ipc_protocol instance.
+ *
+ * Returns: true if sleep notification handled, false otherwise.
+ */
+bool ipc_protocol_pm_dev_sleep_handle(struct iosm_protocol *ipc_protocol);
+
+/**
+ * ipc_protocol_doorbell_trigger - Wrapper for PM function which wake up the
+ *				   device if it is in low power mode
+ *				   and trigger a head pointer update interrupt.
+ * @ipc_protocol:	Pointer to ipc_protocol instance.
+ * @identifier:		Specifies what component triggered hpda
+ *			update irq
+ */
+void ipc_protocol_doorbell_trigger(struct iosm_protocol *ipc_protocol,
+				   u32 identifier);
+
+/**
+ * ipc_protocol_sleep_notification_string - Returns last Sleep Notification as
+ *					    string.
+ * @ipc_protocol:	Instance pointer of Protocol module.
+ *
+ * Returns: Pointer to string.
+ */
+const char *
+ipc_protocol_sleep_notification_string(struct iosm_protocol *ipc_protocol);
+
+/**
+ * ipc_protocol_init - Allocates IPC protocol instance
+ * @ipc_imem:		Pointer to iosm_imem structure
+ *
+ * Returns: Address of IPC  protocol instance on success & NULL on failure.
+ */
+struct iosm_protocol *ipc_protocol_init(struct iosm_imem *ipc_imem);
+
+/**
+ * ipc_protocol_deinit - Deallocates IPC protocol instance
+ * @ipc_protocol:	pointer to the IPC protocol instance
+ */
+void ipc_protocol_deinit(struct iosm_protocol *ipc_protocol);
+
+#endif