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diff --git a/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h b/drivers/infiniband/hw/efa/efa_admin_cmds_defs.h
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+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
+ */
+
+#ifndef _EFA_ADMIN_CMDS_H_
+#define _EFA_ADMIN_CMDS_H_
+
+#define EFA_ADMIN_API_VERSION_MAJOR 0
+#define EFA_ADMIN_API_VERSION_MINOR 1
+
+/* EFA admin queue opcodes */
+enum efa_admin_aq_opcode {
+ EFA_ADMIN_CREATE_QP = 1,
+ EFA_ADMIN_MODIFY_QP = 2,
+ EFA_ADMIN_QUERY_QP = 3,
+ EFA_ADMIN_DESTROY_QP = 4,
+ EFA_ADMIN_CREATE_AH = 5,
+ EFA_ADMIN_DESTROY_AH = 6,
+ EFA_ADMIN_REG_MR = 7,
+ EFA_ADMIN_DEREG_MR = 8,
+ EFA_ADMIN_CREATE_CQ = 9,
+ EFA_ADMIN_DESTROY_CQ = 10,
+ EFA_ADMIN_GET_FEATURE = 11,
+ EFA_ADMIN_SET_FEATURE = 12,
+ EFA_ADMIN_GET_STATS = 13,
+ EFA_ADMIN_ALLOC_PD = 14,
+ EFA_ADMIN_DEALLOC_PD = 15,
+ EFA_ADMIN_ALLOC_UAR = 16,
+ EFA_ADMIN_DEALLOC_UAR = 17,
+ EFA_ADMIN_MAX_OPCODE = 17,
+};
+
+enum efa_admin_aq_feature_id {
+ EFA_ADMIN_DEVICE_ATTR = 1,
+ EFA_ADMIN_AENQ_CONFIG = 2,
+ EFA_ADMIN_NETWORK_ATTR = 3,
+ EFA_ADMIN_QUEUE_ATTR = 4,
+ EFA_ADMIN_HW_HINTS = 5,
+ EFA_ADMIN_FEATURES_OPCODE_NUM = 8,
+};
+
+/* QP transport type */
+enum efa_admin_qp_type {
+ /* Unreliable Datagram */
+ EFA_ADMIN_QP_TYPE_UD = 1,
+ /* Scalable Reliable Datagram */
+ EFA_ADMIN_QP_TYPE_SRD = 2,
+};
+
+/* QP state */
+enum efa_admin_qp_state {
+ EFA_ADMIN_QP_STATE_RESET = 0,
+ EFA_ADMIN_QP_STATE_INIT = 1,
+ EFA_ADMIN_QP_STATE_RTR = 2,
+ EFA_ADMIN_QP_STATE_RTS = 3,
+ EFA_ADMIN_QP_STATE_SQD = 4,
+ EFA_ADMIN_QP_STATE_SQE = 5,
+ EFA_ADMIN_QP_STATE_ERR = 6,
+};
+
+enum efa_admin_get_stats_type {
+ EFA_ADMIN_GET_STATS_TYPE_BASIC = 0,
+};
+
+enum efa_admin_get_stats_scope {
+ EFA_ADMIN_GET_STATS_SCOPE_ALL = 0,
+ EFA_ADMIN_GET_STATS_SCOPE_QUEUE = 1,
+};
+
+enum efa_admin_modify_qp_mask_bits {
+ EFA_ADMIN_QP_STATE_BIT = 0,
+ EFA_ADMIN_CUR_QP_STATE_BIT = 1,
+ EFA_ADMIN_QKEY_BIT = 2,
+ EFA_ADMIN_SQ_PSN_BIT = 3,
+ EFA_ADMIN_SQ_DRAINED_ASYNC_NOTIFY_BIT = 4,
+};
+
+/*
+ * QP allocation sizes, converted by fabric QueuePair (QP) create command
+ * from QP capabilities.
+ */
+struct efa_admin_qp_alloc_size {
+ /* Send descriptor ring size in bytes */
+ u32 send_queue_ring_size;
+
+ /* Max number of WQEs that can be outstanding on send queue. */
+ u32 send_queue_depth;
+
+ /*
+ * Recv descriptor ring size in bytes, sufficient for user-provided
+ * number of WQEs
+ */
+ u32 recv_queue_ring_size;
+
+ /* Max number of WQEs that can be outstanding on recv queue */
+ u32 recv_queue_depth;
+};
+
+struct efa_admin_create_qp_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* Protection Domain associated with this QP */
+ u16 pd;
+
+ /* QP type */
+ u8 qp_type;
+
+ /*
+ * 0 : sq_virt - If set, SQ ring base address is
+ * virtual (IOVA returned by MR registration)
+ * 1 : rq_virt - If set, RQ ring base address is
+ * virtual (IOVA returned by MR registration)
+ * 7:2 : reserved - MBZ
+ */
+ u8 flags;
+
+ /*
+ * Send queue (SQ) ring base physical address. This field is not
+ * used if this is a Low Latency Queue(LLQ).
+ */
+ u64 sq_base_addr;
+
+ /* Receive queue (RQ) ring base address. */
+ u64 rq_base_addr;
+
+ /* Index of CQ to be associated with Send Queue completions */
+ u32 send_cq_idx;
+
+ /* Index of CQ to be associated with Recv Queue completions */
+ u32 recv_cq_idx;
+
+ /*
+ * Memory registration key for the SQ ring, used only when not in
+ * LLQ mode and base address is virtual
+ */
+ u32 sq_l_key;
+
+ /*
+ * Memory registration key for the RQ ring, used only when base
+ * address is virtual
+ */
+ u32 rq_l_key;
+
+ /* Requested QP allocation sizes */
+ struct efa_admin_qp_alloc_size qp_alloc_size;
+
+ /* UAR number */
+ u16 uar;
+
+ /* MBZ */
+ u16 reserved;
+
+ /* MBZ */
+ u32 reserved2;
+};
+
+struct efa_admin_create_qp_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /* Opaque handle to be used for consequent operations on the QP */
+ u32 qp_handle;
+
+ /* QP number in the given EFA virtual device */
+ u16 qp_num;
+
+ /* MBZ */
+ u16 reserved;
+
+ /* Index of sub-CQ for Send Queue completions */
+ u16 send_sub_cq_idx;
+
+ /* Index of sub-CQ for Receive Queue completions */
+ u16 recv_sub_cq_idx;
+
+ /* SQ doorbell address, as offset to PCIe DB BAR */
+ u32 sq_db_offset;
+
+ /* RQ doorbell address, as offset to PCIe DB BAR */
+ u32 rq_db_offset;
+
+ /*
+ * low latency send queue ring base address as an offset to PCIe
+ * MMIO LLQ_MEM BAR
+ */
+ u32 llq_descriptors_offset;
+};
+
+struct efa_admin_modify_qp_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /*
+ * Mask indicating which fields should be updated see enum
+ * efa_admin_modify_qp_mask_bits
+ */
+ u32 modify_mask;
+
+ /* QP handle returned by create_qp command */
+ u32 qp_handle;
+
+ /* QP state */
+ u32 qp_state;
+
+ /* Override current QP state (before applying the transition) */
+ u32 cur_qp_state;
+
+ /* QKey */
+ u32 qkey;
+
+ /* SQ PSN */
+ u32 sq_psn;
+
+ /* Enable async notification when SQ is drained */
+ u8 sq_drained_async_notify;
+
+ /* MBZ */
+ u8 reserved1;
+
+ /* MBZ */
+ u16 reserved2;
+};
+
+struct efa_admin_modify_qp_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+struct efa_admin_query_qp_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* QP handle returned by create_qp command */
+ u32 qp_handle;
+};
+
+struct efa_admin_query_qp_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /* QP state */
+ u32 qp_state;
+
+ /* QKey */
+ u32 qkey;
+
+ /* SQ PSN */
+ u32 sq_psn;
+
+ /* Indicates that draining is in progress */
+ u8 sq_draining;
+
+ /* MBZ */
+ u8 reserved1;
+
+ /* MBZ */
+ u16 reserved2;
+};
+
+struct efa_admin_destroy_qp_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* QP handle returned by create_qp command */
+ u32 qp_handle;
+};
+
+struct efa_admin_destroy_qp_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+/*
+ * Create Address Handle command parameters. Must not be called more than
+ * once for the same destination
+ */
+struct efa_admin_create_ah_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* Destination address in network byte order */
+ u8 dest_addr[16];
+
+ /* PD number */
+ u16 pd;
+
+ u16 reserved;
+};
+
+struct efa_admin_create_ah_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /* Target interface address handle (opaque) */
+ u16 ah;
+
+ u16 reserved;
+};
+
+struct efa_admin_destroy_ah_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* Target interface address handle (opaque) */
+ u16 ah;
+
+ /* PD number */
+ u16 pd;
+};
+
+struct efa_admin_destroy_ah_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+/*
+ * Registration of MemoryRegion, required for QP working with Virtual
+ * Addresses. In standard verbs semantics, region length is limited to 2GB
+ * space, but EFA offers larger MR support for large memory space, to ease
+ * on users working with very large datasets (i.e. full GPU memory mapping).
+ */
+struct efa_admin_reg_mr_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* Protection Domain */
+ u16 pd;
+
+ /* MBZ */
+ u16 reserved16_w1;
+
+ /* Physical Buffer List, each element is page-aligned. */
+ union {
+ /*
+ * Inline array of guest-physical page addresses of user
+ * memory pages (optimization for short region
+ * registrations)
+ */
+ u64 inline_pbl_array[4];
+
+ /* points to PBL (direct or indirect, chained if needed) */
+ struct efa_admin_ctrl_buff_info pbl;
+ } pbl;
+
+ /* Memory region length, in bytes. */
+ u64 mr_length;
+
+ /*
+ * flags and page size
+ * 4:0 : phys_page_size_shift - page size is (1 <<
+ * phys_page_size_shift). Page size is used for
+ * building the Virtual to Physical address mapping
+ * 6:5 : reserved - MBZ
+ * 7 : mem_addr_phy_mode_en - Enable bit for physical
+ * memory registration (no translation), can be used
+ * only by privileged clients. If set, PBL must
+ * contain a single entry.
+ */
+ u8 flags;
+
+ /*
+ * permissions
+ * 0 : local_write_enable - Write permissions: value
+ * of 1 needed for RQ buffers and for RDMA write
+ * 7:1 : reserved1 - remote access flags, etc
+ */
+ u8 permissions;
+
+ u16 reserved16_w5;
+
+ /* number of pages in PBL (redundant, could be calculated) */
+ u32 page_num;
+
+ /*
+ * IO Virtual Address associated with this MR. If
+ * mem_addr_phy_mode_en is set, contains the physical address of
+ * the region.
+ */
+ u64 iova;
+};
+
+struct efa_admin_reg_mr_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /*
+ * L_Key, to be used in conjunction with local buffer references in
+ * SQ and RQ WQE, or with virtual RQ/CQ rings
+ */
+ u32 l_key;
+
+ /*
+ * R_Key, to be used in RDMA messages to refer to remotely accessed
+ * memory region
+ */
+ u32 r_key;
+};
+
+struct efa_admin_dereg_mr_cmd {
+ /* Common Admin Queue descriptor */
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /* L_Key, memory region's l_key */
+ u32 l_key;
+};
+
+struct efa_admin_dereg_mr_resp {
+ /* Common Admin Queue completion descriptor */
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+struct efa_admin_create_cq_cmd {
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ /*
+ * 4:0 : reserved5
+ * 5 : interrupt_mode_enabled - if set, cq operates
+ * in interrupt mode (i.e. CQ events and MSI-X are
+ * generated), otherwise - polling
+ * 6 : virt - If set, ring base address is virtual
+ * (IOVA returned by MR registration)
+ * 7 : reserved6
+ */
+ u8 cq_caps_1;
+
+ /*
+ * 4:0 : cq_entry_size_words - size of CQ entry in
+ * 32-bit words, valid values: 4, 8.
+ * 7:5 : reserved7
+ */
+ u8 cq_caps_2;
+
+ /* completion queue depth in # of entries. must be power of 2 */
+ u16 cq_depth;
+
+ /* msix vector assigned to this cq */
+ u32 msix_vector_idx;
+
+ /*
+ * CQ ring base address, virtual or physical depending on 'virt'
+ * flag
+ */
+ struct efa_common_mem_addr cq_ba;
+
+ /*
+ * Memory registration key for the ring, used only when base
+ * address is virtual
+ */
+ u32 l_key;
+
+ /*
+ * number of sub cqs - must be equal to sub_cqs_per_cq of queue
+ * attributes.
+ */
+ u16 num_sub_cqs;
+
+ /* UAR number */
+ u16 uar;
+};
+
+struct efa_admin_create_cq_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ u16 cq_idx;
+
+ /* actual cq depth in number of entries */
+ u16 cq_actual_depth;
+};
+
+struct efa_admin_destroy_cq_cmd {
+ struct efa_admin_aq_common_desc aq_common_desc;
+
+ u16 cq_idx;
+
+ u16 reserved1;
+};
+
+struct efa_admin_destroy_cq_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+/*
+ * EFA AQ Get Statistics command. Extended statistics are placed in control
+ * buffer pointed by AQ entry
+ */
+struct efa_admin_aq_get_stats_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+
+ union {
+ /* command specific inline data */
+ u32 inline_data_w1[3];
+
+ struct efa_admin_ctrl_buff_info control_buffer;
+ } u;
+
+ /* stats type as defined in enum efa_admin_get_stats_type */
+ u8 type;
+
+ /* stats scope defined in enum efa_admin_get_stats_scope */
+ u8 scope;
+
+ u16 scope_modifier;
+};
+
+struct efa_admin_basic_stats {
+ u64 tx_bytes;
+
+ u64 tx_pkts;
+
+ u64 rx_bytes;
+
+ u64 rx_pkts;
+
+ u64 rx_drops;
+};
+
+struct efa_admin_acq_get_stats_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ struct efa_admin_basic_stats basic_stats;
+};
+
+struct efa_admin_get_set_feature_common_desc {
+ /*
+ * 1:0 : select - 0x1 - current value; 0x3 - default
+ * value
+ * 7:3 : reserved3
+ */
+ u8 flags;
+
+ /* as appears in efa_admin_aq_feature_id */
+ u8 feature_id;
+
+ /* MBZ */
+ u16 reserved16;
+};
+
+struct efa_admin_feature_device_attr_desc {
+ /* Bitmap of efa_admin_aq_feature_id */
+ u64 supported_features;
+
+ /* Bitmap of supported page sizes in MR registrations */
+ u64 page_size_cap;
+
+ u32 fw_version;
+
+ u32 admin_api_version;
+
+ u32 device_version;
+
+ /* Bar used for SQ and RQ doorbells */
+ u16 db_bar;
+
+ /* Indicates how many bits are used physical address access */
+ u8 phys_addr_width;
+
+ /* Indicates how many bits are used virtual address access */
+ u8 virt_addr_width;
+};
+
+struct efa_admin_feature_queue_attr_desc {
+ /* The maximum number of queue pairs supported */
+ u32 max_qp;
+
+ u32 max_sq_depth;
+
+ /* max send wr used in inline-buf */
+ u32 inline_buf_size;
+
+ u32 max_rq_depth;
+
+ /* The maximum number of completion queues supported per VF */
+ u32 max_cq;
+
+ u32 max_cq_depth;
+
+ /* Number of sub-CQs to be created for each CQ */
+ u16 sub_cqs_per_cq;
+
+ u16 reserved;
+
+ /*
+ * Maximum number of SGEs (buffs) allowed for a single send work
+ * queue element (WQE)
+ */
+ u16 max_wr_send_sges;
+
+ /* Maximum number of SGEs allowed for a single recv WQE */
+ u16 max_wr_recv_sges;
+
+ /* The maximum number of memory regions supported */
+ u32 max_mr;
+
+ /* The maximum number of pages can be registered */
+ u32 max_mr_pages;
+
+ /* The maximum number of protection domains supported */
+ u32 max_pd;
+
+ /* The maximum number of address handles supported */
+ u32 max_ah;
+
+ /* The maximum size of LLQ in bytes */
+ u32 max_llq_size;
+};
+
+struct efa_admin_feature_aenq_desc {
+ /* bitmask for AENQ groups the device can report */
+ u32 supported_groups;
+
+ /* bitmask for AENQ groups to report */
+ u32 enabled_groups;
+};
+
+struct efa_admin_feature_network_attr_desc {
+ /* Raw address data in network byte order */
+ u8 addr[16];
+
+ u32 mtu;
+};
+
+/*
+ * When hint value is 0, hints capabilities are not supported or driver
+ * should use its own predefined value
+ */
+struct efa_admin_hw_hints {
+ /* value in ms */
+ u16 mmio_read_timeout;
+
+ /* value in ms */
+ u16 driver_watchdog_timeout;
+
+ /* value in ms */
+ u16 admin_completion_timeout;
+
+ /* poll interval in ms */
+ u16 poll_interval;
+};
+
+struct efa_admin_get_feature_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+
+ struct efa_admin_ctrl_buff_info control_buffer;
+
+ struct efa_admin_get_set_feature_common_desc feature_common;
+
+ u32 raw[11];
+};
+
+struct efa_admin_get_feature_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ union {
+ u32 raw[14];
+
+ struct efa_admin_feature_device_attr_desc device_attr;
+
+ struct efa_admin_feature_aenq_desc aenq;
+
+ struct efa_admin_feature_network_attr_desc network_attr;
+
+ struct efa_admin_feature_queue_attr_desc queue_attr;
+
+ struct efa_admin_hw_hints hw_hints;
+ } u;
+};
+
+struct efa_admin_set_feature_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+
+ struct efa_admin_ctrl_buff_info control_buffer;
+
+ struct efa_admin_get_set_feature_common_desc feature_common;
+
+ union {
+ u32 raw[11];
+
+ /* AENQ configuration */
+ struct efa_admin_feature_aenq_desc aenq;
+ } u;
+};
+
+struct efa_admin_set_feature_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ union {
+ u32 raw[14];
+ } u;
+};
+
+struct efa_admin_alloc_pd_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+};
+
+struct efa_admin_alloc_pd_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /* PD number */
+ u16 pd;
+
+ /* MBZ */
+ u16 reserved;
+};
+
+struct efa_admin_dealloc_pd_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+
+ /* PD number */
+ u16 pd;
+
+ /* MBZ */
+ u16 reserved;
+};
+
+struct efa_admin_dealloc_pd_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+struct efa_admin_alloc_uar_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+};
+
+struct efa_admin_alloc_uar_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+
+ /* UAR number */
+ u16 uar;
+
+ /* MBZ */
+ u16 reserved;
+};
+
+struct efa_admin_dealloc_uar_cmd {
+ struct efa_admin_aq_common_desc aq_common_descriptor;
+
+ /* UAR number */
+ u16 uar;
+
+ /* MBZ */
+ u16 reserved;
+};
+
+struct efa_admin_dealloc_uar_resp {
+ struct efa_admin_acq_common_desc acq_common_desc;
+};
+
+/* asynchronous event notification groups */
+enum efa_admin_aenq_group {
+ EFA_ADMIN_FATAL_ERROR = 1,
+ EFA_ADMIN_WARNING = 2,
+ EFA_ADMIN_NOTIFICATION = 3,
+ EFA_ADMIN_KEEP_ALIVE = 4,
+ EFA_ADMIN_AENQ_GROUPS_NUM = 5,
+};
+
+enum efa_admin_aenq_notification_syndrom {
+ EFA_ADMIN_SUSPEND = 0,
+ EFA_ADMIN_RESUME = 1,
+ EFA_ADMIN_UPDATE_HINTS = 2,
+};
+
+struct efa_admin_mmio_req_read_less_resp {
+ u16 req_id;
+
+ u16 reg_off;
+
+ /* value is valid when poll is cleared */
+ u32 reg_val;
+};
+
+/* create_qp_cmd */
+#define EFA_ADMIN_CREATE_QP_CMD_SQ_VIRT_MASK BIT(0)
+#define EFA_ADMIN_CREATE_QP_CMD_RQ_VIRT_SHIFT 1
+#define EFA_ADMIN_CREATE_QP_CMD_RQ_VIRT_MASK BIT(1)
+
+/* reg_mr_cmd */
+#define EFA_ADMIN_REG_MR_CMD_PHYS_PAGE_SIZE_SHIFT_MASK GENMASK(4, 0)
+#define EFA_ADMIN_REG_MR_CMD_MEM_ADDR_PHY_MODE_EN_SHIFT 7
+#define EFA_ADMIN_REG_MR_CMD_MEM_ADDR_PHY_MODE_EN_MASK BIT(7)
+#define EFA_ADMIN_REG_MR_CMD_LOCAL_WRITE_ENABLE_MASK BIT(0)
+
+/* create_cq_cmd */
+#define EFA_ADMIN_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_SHIFT 5
+#define EFA_ADMIN_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK BIT(5)
+#define EFA_ADMIN_CREATE_CQ_CMD_VIRT_SHIFT 6
+#define EFA_ADMIN_CREATE_CQ_CMD_VIRT_MASK BIT(6)
+#define EFA_ADMIN_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK GENMASK(4, 0)
+
+/* get_set_feature_common_desc */
+#define EFA_ADMIN_GET_SET_FEATURE_COMMON_DESC_SELECT_MASK GENMASK(1, 0)
+
+#endif /* _EFA_ADMIN_CMDS_H_ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.