| /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
| /* |
| * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
| * Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
| * Copyright (c) 2004, 2020 Intel Corporation. All rights reserved. |
| * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
| * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
| * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
| * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
| */ |
| |
| #ifndef IB_VERBS_H |
| #define IB_VERBS_H |
| |
| #include <linux/ethtool.h> |
| #include <linux/types.h> |
| #include <linux/device.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/kref.h> |
| #include <linux/list.h> |
| #include <linux/rwsem.h> |
| #include <linux/workqueue.h> |
| #include <linux/irq_poll.h> |
| #include <uapi/linux/if_ether.h> |
| #include <net/ipv6.h> |
| #include <net/ip.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| #include <linux/netdevice.h> |
| #include <linux/refcount.h> |
| #include <linux/if_link.h> |
| #include <linux/atomic.h> |
| #include <linux/mmu_notifier.h> |
| #include <linux/uaccess.h> |
| #include <linux/cgroup_rdma.h> |
| #include <linux/irqflags.h> |
| #include <linux/preempt.h> |
| #include <linux/dim.h> |
| #include <uapi/rdma/ib_user_verbs.h> |
| #include <rdma/rdma_counter.h> |
| #include <rdma/restrack.h> |
| #include <rdma/signature.h> |
| #include <uapi/rdma/rdma_user_ioctl.h> |
| #include <uapi/rdma/ib_user_ioctl_verbs.h> |
| |
| #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN |
| |
| struct ib_umem_odp; |
| struct ib_uqp_object; |
| struct ib_usrq_object; |
| struct ib_uwq_object; |
| struct rdma_cm_id; |
| struct ib_port; |
| struct hw_stats_device_data; |
| |
| extern struct workqueue_struct *ib_wq; |
| extern struct workqueue_struct *ib_comp_wq; |
| extern struct workqueue_struct *ib_comp_unbound_wq; |
| |
| struct ib_ucq_object; |
| |
| __printf(3, 4) __cold |
| void ibdev_printk(const char *level, const struct ib_device *ibdev, |
| const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_emerg(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_alert(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_crit(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_err(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_warn(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_notice(const struct ib_device *ibdev, const char *format, ...); |
| __printf(2, 3) __cold |
| void ibdev_info(const struct ib_device *ibdev, const char *format, ...); |
| |
| #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
| (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) |
| #define ibdev_dbg(__dev, format, args...) \ |
| dynamic_ibdev_dbg(__dev, format, ##args) |
| #else |
| __printf(2, 3) __cold |
| static inline |
| void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {} |
| #endif |
| |
| #define ibdev_level_ratelimited(ibdev_level, ibdev, fmt, ...) \ |
| do { \ |
| static DEFINE_RATELIMIT_STATE(_rs, \ |
| DEFAULT_RATELIMIT_INTERVAL, \ |
| DEFAULT_RATELIMIT_BURST); \ |
| if (__ratelimit(&_rs)) \ |
| ibdev_level(ibdev, fmt, ##__VA_ARGS__); \ |
| } while (0) |
| |
| #define ibdev_emerg_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_emerg, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_alert_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_alert, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_crit_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_crit, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_err_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_err, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_warn_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_warn, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_notice_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_notice, ibdev, fmt, ##__VA_ARGS__) |
| #define ibdev_info_ratelimited(ibdev, fmt, ...) \ |
| ibdev_level_ratelimited(ibdev_info, ibdev, fmt, ##__VA_ARGS__) |
| |
| #if defined(CONFIG_DYNAMIC_DEBUG) || \ |
| (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) |
| /* descriptor check is first to prevent flooding with "callbacks suppressed" */ |
| #define ibdev_dbg_ratelimited(ibdev, fmt, ...) \ |
| do { \ |
| static DEFINE_RATELIMIT_STATE(_rs, \ |
| DEFAULT_RATELIMIT_INTERVAL, \ |
| DEFAULT_RATELIMIT_BURST); \ |
| DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| if (DYNAMIC_DEBUG_BRANCH(descriptor) && __ratelimit(&_rs)) \ |
| __dynamic_ibdev_dbg(&descriptor, ibdev, fmt, \ |
| ##__VA_ARGS__); \ |
| } while (0) |
| #else |
| __printf(2, 3) __cold |
| static inline |
| void ibdev_dbg_ratelimited(const struct ib_device *ibdev, const char *format, ...) {} |
| #endif |
| |
| union ib_gid { |
| u8 raw[16]; |
| struct { |
| __be64 subnet_prefix; |
| __be64 interface_id; |
| } global; |
| }; |
| |
| extern union ib_gid zgid; |
| |
| enum ib_gid_type { |
| IB_GID_TYPE_IB = IB_UVERBS_GID_TYPE_IB, |
| IB_GID_TYPE_ROCE = IB_UVERBS_GID_TYPE_ROCE_V1, |
| IB_GID_TYPE_ROCE_UDP_ENCAP = IB_UVERBS_GID_TYPE_ROCE_V2, |
| IB_GID_TYPE_SIZE |
| }; |
| |
| #define ROCE_V2_UDP_DPORT 4791 |
| struct ib_gid_attr { |
| struct net_device __rcu *ndev; |
| struct ib_device *device; |
| union ib_gid gid; |
| enum ib_gid_type gid_type; |
| u16 index; |
| u32 port_num; |
| }; |
| |
| enum { |
| /* set the local administered indication */ |
| IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2, |
| }; |
| |
| enum rdma_transport_type { |
| RDMA_TRANSPORT_IB, |
| RDMA_TRANSPORT_IWARP, |
| RDMA_TRANSPORT_USNIC, |
| RDMA_TRANSPORT_USNIC_UDP, |
| RDMA_TRANSPORT_UNSPECIFIED, |
| }; |
| |
| enum rdma_protocol_type { |
| RDMA_PROTOCOL_IB, |
| RDMA_PROTOCOL_IBOE, |
| RDMA_PROTOCOL_IWARP, |
| RDMA_PROTOCOL_USNIC_UDP |
| }; |
| |
| __attribute_const__ enum rdma_transport_type |
| rdma_node_get_transport(unsigned int node_type); |
| |
| enum rdma_network_type { |
| RDMA_NETWORK_IB, |
| RDMA_NETWORK_ROCE_V1, |
| RDMA_NETWORK_IPV4, |
| RDMA_NETWORK_IPV6 |
| }; |
| |
| static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type) |
| { |
| if (network_type == RDMA_NETWORK_IPV4 || |
| network_type == RDMA_NETWORK_IPV6) |
| return IB_GID_TYPE_ROCE_UDP_ENCAP; |
| else if (network_type == RDMA_NETWORK_ROCE_V1) |
| return IB_GID_TYPE_ROCE; |
| else |
| return IB_GID_TYPE_IB; |
| } |
| |
| static inline enum rdma_network_type |
| rdma_gid_attr_network_type(const struct ib_gid_attr *attr) |
| { |
| if (attr->gid_type == IB_GID_TYPE_IB) |
| return RDMA_NETWORK_IB; |
| |
| if (attr->gid_type == IB_GID_TYPE_ROCE) |
| return RDMA_NETWORK_ROCE_V1; |
| |
| if (ipv6_addr_v4mapped((struct in6_addr *)&attr->gid)) |
| return RDMA_NETWORK_IPV4; |
| else |
| return RDMA_NETWORK_IPV6; |
| } |
| |
| enum rdma_link_layer { |
| IB_LINK_LAYER_UNSPECIFIED, |
| IB_LINK_LAYER_INFINIBAND, |
| IB_LINK_LAYER_ETHERNET, |
| }; |
| |
| enum ib_device_cap_flags { |
| IB_DEVICE_RESIZE_MAX_WR = IB_UVERBS_DEVICE_RESIZE_MAX_WR, |
| IB_DEVICE_BAD_PKEY_CNTR = IB_UVERBS_DEVICE_BAD_PKEY_CNTR, |
| IB_DEVICE_BAD_QKEY_CNTR = IB_UVERBS_DEVICE_BAD_QKEY_CNTR, |
| IB_DEVICE_RAW_MULTI = IB_UVERBS_DEVICE_RAW_MULTI, |
| IB_DEVICE_AUTO_PATH_MIG = IB_UVERBS_DEVICE_AUTO_PATH_MIG, |
| IB_DEVICE_CHANGE_PHY_PORT = IB_UVERBS_DEVICE_CHANGE_PHY_PORT, |
| IB_DEVICE_UD_AV_PORT_ENFORCE = IB_UVERBS_DEVICE_UD_AV_PORT_ENFORCE, |
| IB_DEVICE_CURR_QP_STATE_MOD = IB_UVERBS_DEVICE_CURR_QP_STATE_MOD, |
| IB_DEVICE_SHUTDOWN_PORT = IB_UVERBS_DEVICE_SHUTDOWN_PORT, |
| /* IB_DEVICE_INIT_TYPE = IB_UVERBS_DEVICE_INIT_TYPE, (not in use) */ |
| IB_DEVICE_PORT_ACTIVE_EVENT = IB_UVERBS_DEVICE_PORT_ACTIVE_EVENT, |
| IB_DEVICE_SYS_IMAGE_GUID = IB_UVERBS_DEVICE_SYS_IMAGE_GUID, |
| IB_DEVICE_RC_RNR_NAK_GEN = IB_UVERBS_DEVICE_RC_RNR_NAK_GEN, |
| IB_DEVICE_SRQ_RESIZE = IB_UVERBS_DEVICE_SRQ_RESIZE, |
| IB_DEVICE_N_NOTIFY_CQ = IB_UVERBS_DEVICE_N_NOTIFY_CQ, |
| |
| /* Reserved, old SEND_W_INV = 1 << 16,*/ |
| IB_DEVICE_MEM_WINDOW = IB_UVERBS_DEVICE_MEM_WINDOW, |
| /* |
| * Devices should set IB_DEVICE_UD_IP_SUM if they support |
| * insertion of UDP and TCP checksum on outgoing UD IPoIB |
| * messages and can verify the validity of checksum for |
| * incoming messages. Setting this flag implies that the |
| * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. |
| */ |
| IB_DEVICE_UD_IP_CSUM = IB_UVERBS_DEVICE_UD_IP_CSUM, |
| IB_DEVICE_XRC = IB_UVERBS_DEVICE_XRC, |
| |
| /* |
| * This device supports the IB "base memory management extension", |
| * which includes support for fast registrations (IB_WR_REG_MR, |
| * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should |
| * also be set by any iWarp device which must support FRs to comply |
| * to the iWarp verbs spec. iWarp devices also support the |
| * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the |
| * stag. |
| */ |
| IB_DEVICE_MEM_MGT_EXTENSIONS = IB_UVERBS_DEVICE_MEM_MGT_EXTENSIONS, |
| IB_DEVICE_MEM_WINDOW_TYPE_2A = IB_UVERBS_DEVICE_MEM_WINDOW_TYPE_2A, |
| IB_DEVICE_MEM_WINDOW_TYPE_2B = IB_UVERBS_DEVICE_MEM_WINDOW_TYPE_2B, |
| IB_DEVICE_RC_IP_CSUM = IB_UVERBS_DEVICE_RC_IP_CSUM, |
| /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */ |
| IB_DEVICE_RAW_IP_CSUM = IB_UVERBS_DEVICE_RAW_IP_CSUM, |
| IB_DEVICE_MANAGED_FLOW_STEERING = |
| IB_UVERBS_DEVICE_MANAGED_FLOW_STEERING, |
| /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */ |
| IB_DEVICE_RAW_SCATTER_FCS = IB_UVERBS_DEVICE_RAW_SCATTER_FCS, |
| /* The device supports padding incoming writes to cacheline. */ |
| IB_DEVICE_PCI_WRITE_END_PADDING = |
| IB_UVERBS_DEVICE_PCI_WRITE_END_PADDING, |
| /* Placement type attributes */ |
| IB_DEVICE_FLUSH_GLOBAL = IB_UVERBS_DEVICE_FLUSH_GLOBAL, |
| IB_DEVICE_FLUSH_PERSISTENT = IB_UVERBS_DEVICE_FLUSH_PERSISTENT, |
| IB_DEVICE_ATOMIC_WRITE = IB_UVERBS_DEVICE_ATOMIC_WRITE, |
| }; |
| |
| enum ib_kernel_cap_flags { |
| /* |
| * This device supports a per-device lkey or stag that can be |
| * used without performing a memory registration for the local |
| * memory. Note that ULPs should never check this flag, but |
| * instead of use the local_dma_lkey flag in the ib_pd structure, |
| * which will always contain a usable lkey. |
| */ |
| IBK_LOCAL_DMA_LKEY = 1 << 0, |
| /* IB_QP_CREATE_INTEGRITY_EN is supported to implement T10-PI */ |
| IBK_INTEGRITY_HANDOVER = 1 << 1, |
| /* IB_ACCESS_ON_DEMAND is supported during reg_user_mr() */ |
| IBK_ON_DEMAND_PAGING = 1 << 2, |
| /* IB_MR_TYPE_SG_GAPS is supported */ |
| IBK_SG_GAPS_REG = 1 << 3, |
| /* Driver supports RDMA_NLDEV_CMD_DELLINK */ |
| IBK_ALLOW_USER_UNREG = 1 << 4, |
| |
| /* ipoib will use IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK */ |
| IBK_BLOCK_MULTICAST_LOOPBACK = 1 << 5, |
| /* iopib will use IB_QP_CREATE_IPOIB_UD_LSO for its QPs */ |
| IBK_UD_TSO = 1 << 6, |
| /* iopib will use the device ops: |
| * get_vf_config |
| * get_vf_guid |
| * get_vf_stats |
| * set_vf_guid |
| * set_vf_link_state |
| */ |
| IBK_VIRTUAL_FUNCTION = 1 << 7, |
| /* ipoib will use IB_QP_CREATE_NETDEV_USE for its QPs */ |
| IBK_RDMA_NETDEV_OPA = 1 << 8, |
| }; |
| |
| enum ib_atomic_cap { |
| IB_ATOMIC_NONE, |
| IB_ATOMIC_HCA, |
| IB_ATOMIC_GLOB |
| }; |
| |
| enum ib_odp_general_cap_bits { |
| IB_ODP_SUPPORT = 1 << 0, |
| IB_ODP_SUPPORT_IMPLICIT = 1 << 1, |
| }; |
| |
| enum ib_odp_transport_cap_bits { |
| IB_ODP_SUPPORT_SEND = 1 << 0, |
| IB_ODP_SUPPORT_RECV = 1 << 1, |
| IB_ODP_SUPPORT_WRITE = 1 << 2, |
| IB_ODP_SUPPORT_READ = 1 << 3, |
| IB_ODP_SUPPORT_ATOMIC = 1 << 4, |
| IB_ODP_SUPPORT_SRQ_RECV = 1 << 5, |
| }; |
| |
| struct ib_odp_caps { |
| uint64_t general_caps; |
| struct { |
| uint32_t rc_odp_caps; |
| uint32_t uc_odp_caps; |
| uint32_t ud_odp_caps; |
| uint32_t xrc_odp_caps; |
| } per_transport_caps; |
| }; |
| |
| struct ib_rss_caps { |
| /* Corresponding bit will be set if qp type from |
| * 'enum ib_qp_type' is supported, e.g. |
| * supported_qpts |= 1 << IB_QPT_UD |
| */ |
| u32 supported_qpts; |
| u32 max_rwq_indirection_tables; |
| u32 max_rwq_indirection_table_size; |
| }; |
| |
| enum ib_tm_cap_flags { |
| /* Support tag matching with rendezvous offload for RC transport */ |
| IB_TM_CAP_RNDV_RC = 1 << 0, |
| }; |
| |
| struct ib_tm_caps { |
| /* Max size of RNDV header */ |
| u32 max_rndv_hdr_size; |
| /* Max number of entries in tag matching list */ |
| u32 max_num_tags; |
| /* From enum ib_tm_cap_flags */ |
| u32 flags; |
| /* Max number of outstanding list operations */ |
| u32 max_ops; |
| /* Max number of SGE in tag matching entry */ |
| u32 max_sge; |
| }; |
| |
| struct ib_cq_init_attr { |
| unsigned int cqe; |
| u32 comp_vector; |
| u32 flags; |
| }; |
| |
| enum ib_cq_attr_mask { |
| IB_CQ_MODERATE = 1 << 0, |
| }; |
| |
| struct ib_cq_caps { |
| u16 max_cq_moderation_count; |
| u16 max_cq_moderation_period; |
| }; |
| |
| struct ib_dm_mr_attr { |
| u64 length; |
| u64 offset; |
| u32 access_flags; |
| }; |
| |
| struct ib_dm_alloc_attr { |
| u64 length; |
| u32 alignment; |
| u32 flags; |
| }; |
| |
| struct ib_device_attr { |
| u64 fw_ver; |
| __be64 sys_image_guid; |
| u64 max_mr_size; |
| u64 page_size_cap; |
| u32 vendor_id; |
| u32 vendor_part_id; |
| u32 hw_ver; |
| int max_qp; |
| int max_qp_wr; |
| u64 device_cap_flags; |
| u64 kernel_cap_flags; |
| int max_send_sge; |
| int max_recv_sge; |
| int max_sge_rd; |
| int max_cq; |
| int max_cqe; |
| int max_mr; |
| int max_pd; |
| int max_qp_rd_atom; |
| int max_ee_rd_atom; |
| int max_res_rd_atom; |
| int max_qp_init_rd_atom; |
| int max_ee_init_rd_atom; |
| enum ib_atomic_cap atomic_cap; |
| enum ib_atomic_cap masked_atomic_cap; |
| int max_ee; |
| int max_rdd; |
| int max_mw; |
| int max_raw_ipv6_qp; |
| int max_raw_ethy_qp; |
| int max_mcast_grp; |
| int max_mcast_qp_attach; |
| int max_total_mcast_qp_attach; |
| int max_ah; |
| int max_srq; |
| int max_srq_wr; |
| int max_srq_sge; |
| unsigned int max_fast_reg_page_list_len; |
| unsigned int max_pi_fast_reg_page_list_len; |
| u16 max_pkeys; |
| u8 local_ca_ack_delay; |
| int sig_prot_cap; |
| int sig_guard_cap; |
| struct ib_odp_caps odp_caps; |
| uint64_t timestamp_mask; |
| uint64_t hca_core_clock; /* in KHZ */ |
| struct ib_rss_caps rss_caps; |
| u32 max_wq_type_rq; |
| u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */ |
| struct ib_tm_caps tm_caps; |
| struct ib_cq_caps cq_caps; |
| u64 max_dm_size; |
| /* Max entries for sgl for optimized performance per READ */ |
| u32 max_sgl_rd; |
| }; |
| |
| enum ib_mtu { |
| IB_MTU_256 = 1, |
| IB_MTU_512 = 2, |
| IB_MTU_1024 = 3, |
| IB_MTU_2048 = 4, |
| IB_MTU_4096 = 5 |
| }; |
| |
| enum opa_mtu { |
| OPA_MTU_8192 = 6, |
| OPA_MTU_10240 = 7 |
| }; |
| |
| static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) |
| { |
| switch (mtu) { |
| case IB_MTU_256: return 256; |
| case IB_MTU_512: return 512; |
| case IB_MTU_1024: return 1024; |
| case IB_MTU_2048: return 2048; |
| case IB_MTU_4096: return 4096; |
| default: return -1; |
| } |
| } |
| |
| static inline enum ib_mtu ib_mtu_int_to_enum(int mtu) |
| { |
| if (mtu >= 4096) |
| return IB_MTU_4096; |
| else if (mtu >= 2048) |
| return IB_MTU_2048; |
| else if (mtu >= 1024) |
| return IB_MTU_1024; |
| else if (mtu >= 512) |
| return IB_MTU_512; |
| else |
| return IB_MTU_256; |
| } |
| |
| static inline int opa_mtu_enum_to_int(enum opa_mtu mtu) |
| { |
| switch (mtu) { |
| case OPA_MTU_8192: |
| return 8192; |
| case OPA_MTU_10240: |
| return 10240; |
| default: |
| return(ib_mtu_enum_to_int((enum ib_mtu)mtu)); |
| } |
| } |
| |
| static inline enum opa_mtu opa_mtu_int_to_enum(int mtu) |
| { |
| if (mtu >= 10240) |
| return OPA_MTU_10240; |
| else if (mtu >= 8192) |
| return OPA_MTU_8192; |
| else |
| return ((enum opa_mtu)ib_mtu_int_to_enum(mtu)); |
| } |
| |
| enum ib_port_state { |
| IB_PORT_NOP = 0, |
| IB_PORT_DOWN = 1, |
| IB_PORT_INIT = 2, |
| IB_PORT_ARMED = 3, |
| IB_PORT_ACTIVE = 4, |
| IB_PORT_ACTIVE_DEFER = 5 |
| }; |
| |
| enum ib_port_phys_state { |
| IB_PORT_PHYS_STATE_SLEEP = 1, |
| IB_PORT_PHYS_STATE_POLLING = 2, |
| IB_PORT_PHYS_STATE_DISABLED = 3, |
| IB_PORT_PHYS_STATE_PORT_CONFIGURATION_TRAINING = 4, |
| IB_PORT_PHYS_STATE_LINK_UP = 5, |
| IB_PORT_PHYS_STATE_LINK_ERROR_RECOVERY = 6, |
| IB_PORT_PHYS_STATE_PHY_TEST = 7, |
| }; |
| |
| enum ib_port_width { |
| IB_WIDTH_1X = 1, |
| IB_WIDTH_2X = 16, |
| IB_WIDTH_4X = 2, |
| IB_WIDTH_8X = 4, |
| IB_WIDTH_12X = 8 |
| }; |
| |
| static inline int ib_width_enum_to_int(enum ib_port_width width) |
| { |
| switch (width) { |
| case IB_WIDTH_1X: return 1; |
| case IB_WIDTH_2X: return 2; |
| case IB_WIDTH_4X: return 4; |
| case IB_WIDTH_8X: return 8; |
| case IB_WIDTH_12X: return 12; |
| default: return -1; |
| } |
| } |
| |
| enum ib_port_speed { |
| IB_SPEED_SDR = 1, |
| IB_SPEED_DDR = 2, |
| IB_SPEED_QDR = 4, |
| IB_SPEED_FDR10 = 8, |
| IB_SPEED_FDR = 16, |
| IB_SPEED_EDR = 32, |
| IB_SPEED_HDR = 64, |
| IB_SPEED_NDR = 128, |
| }; |
| |
| enum ib_stat_flag { |
| IB_STAT_FLAG_OPTIONAL = 1 << 0, |
| }; |
| |
| /** |
| * struct rdma_stat_desc |
| * @name - The name of the counter |
| * @flags - Flags of the counter; For example, IB_STAT_FLAG_OPTIONAL |
| * @priv - Driver private information; Core code should not use |
| */ |
| struct rdma_stat_desc { |
| const char *name; |
| unsigned int flags; |
| const void *priv; |
| }; |
| |
| /** |
| * struct rdma_hw_stats |
| * @lock - Mutex to protect parallel write access to lifespan and values |
| * of counters, which are 64bits and not guaranteed to be written |
| * atomicaly on 32bits systems. |
| * @timestamp - Used by the core code to track when the last update was |
| * @lifespan - Used by the core code to determine how old the counters |
| * should be before being updated again. Stored in jiffies, defaults |
| * to 10 milliseconds, drivers can override the default be specifying |
| * their own value during their allocation routine. |
| * @descs - Array of pointers to static descriptors used for the counters |
| * in directory. |
| * @is_disabled - A bitmap to indicate each counter is currently disabled |
| * or not. |
| * @num_counters - How many hardware counters there are. If name is |
| * shorter than this number, a kernel oops will result. Driver authors |
| * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) |
| * in their code to prevent this. |
| * @value - Array of u64 counters that are accessed by the sysfs code and |
| * filled in by the drivers get_stats routine |
| */ |
| struct rdma_hw_stats { |
| struct mutex lock; /* Protect lifespan and values[] */ |
| unsigned long timestamp; |
| unsigned long lifespan; |
| const struct rdma_stat_desc *descs; |
| unsigned long *is_disabled; |
| int num_counters; |
| u64 value[]; |
| }; |
| |
| #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 |
| |
| struct rdma_hw_stats *rdma_alloc_hw_stats_struct( |
| const struct rdma_stat_desc *descs, int num_counters, |
| unsigned long lifespan); |
| |
| void rdma_free_hw_stats_struct(struct rdma_hw_stats *stats); |
| |
| /* Define bits for the various functionality this port needs to be supported by |
| * the core. |
| */ |
| /* Management 0x00000FFF */ |
| #define RDMA_CORE_CAP_IB_MAD 0x00000001 |
| #define RDMA_CORE_CAP_IB_SMI 0x00000002 |
| #define RDMA_CORE_CAP_IB_CM 0x00000004 |
| #define RDMA_CORE_CAP_IW_CM 0x00000008 |
| #define RDMA_CORE_CAP_IB_SA 0x00000010 |
| #define RDMA_CORE_CAP_OPA_MAD 0x00000020 |
| |
| /* Address format 0x000FF000 */ |
| #define RDMA_CORE_CAP_AF_IB 0x00001000 |
| #define RDMA_CORE_CAP_ETH_AH 0x00002000 |
| #define RDMA_CORE_CAP_OPA_AH 0x00004000 |
| #define RDMA_CORE_CAP_IB_GRH_REQUIRED 0x00008000 |
| |
| /* Protocol 0xFFF00000 */ |
| #define RDMA_CORE_CAP_PROT_IB 0x00100000 |
| #define RDMA_CORE_CAP_PROT_ROCE 0x00200000 |
| #define RDMA_CORE_CAP_PROT_IWARP 0x00400000 |
| #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000 |
| #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000 |
| #define RDMA_CORE_CAP_PROT_USNIC 0x02000000 |
| |
| #define RDMA_CORE_PORT_IB_GRH_REQUIRED (RDMA_CORE_CAP_IB_GRH_REQUIRED \ |
| | RDMA_CORE_CAP_PROT_ROCE \ |
| | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP) |
| |
| #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_SMI \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_IB_SA \ |
| | RDMA_CORE_CAP_AF_IB) |
| #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_AF_IB \ |
| | RDMA_CORE_CAP_ETH_AH) |
| #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \ |
| (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_AF_IB \ |
| | RDMA_CORE_CAP_ETH_AH) |
| #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \ |
| | RDMA_CORE_CAP_IW_CM) |
| #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \ |
| | RDMA_CORE_CAP_OPA_MAD) |
| |
| #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET) |
| |
| #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC) |
| |
| struct ib_port_attr { |
| u64 subnet_prefix; |
| enum ib_port_state state; |
| enum ib_mtu max_mtu; |
| enum ib_mtu active_mtu; |
| u32 phys_mtu; |
| int gid_tbl_len; |
| unsigned int ip_gids:1; |
| /* This is the value from PortInfo CapabilityMask, defined by IBA */ |
| u32 port_cap_flags; |
| u32 max_msg_sz; |
| u32 bad_pkey_cntr; |
| u32 qkey_viol_cntr; |
| u16 pkey_tbl_len; |
| u32 sm_lid; |
| u32 lid; |
| u8 lmc; |
| u8 max_vl_num; |
| u8 sm_sl; |
| u8 subnet_timeout; |
| u8 init_type_reply; |
| u8 active_width; |
| u16 active_speed; |
| u8 phys_state; |
| u16 port_cap_flags2; |
| }; |
| |
| enum ib_device_modify_flags { |
| IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, |
| IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 |
| }; |
| |
| #define IB_DEVICE_NODE_DESC_MAX 64 |
| |
| struct ib_device_modify { |
| u64 sys_image_guid; |
| char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
| }; |
| |
| enum ib_port_modify_flags { |
| IB_PORT_SHUTDOWN = 1, |
| IB_PORT_INIT_TYPE = (1<<2), |
| IB_PORT_RESET_QKEY_CNTR = (1<<3), |
| IB_PORT_OPA_MASK_CHG = (1<<4) |
| }; |
| |
| struct ib_port_modify { |
| u32 set_port_cap_mask; |
| u32 clr_port_cap_mask; |
| u8 init_type; |
| }; |
| |
| enum ib_event_type { |
| IB_EVENT_CQ_ERR, |
| IB_EVENT_QP_FATAL, |
| IB_EVENT_QP_REQ_ERR, |
| IB_EVENT_QP_ACCESS_ERR, |
| IB_EVENT_COMM_EST, |
| IB_EVENT_SQ_DRAINED, |
| IB_EVENT_PATH_MIG, |
| IB_EVENT_PATH_MIG_ERR, |
| IB_EVENT_DEVICE_FATAL, |
| IB_EVENT_PORT_ACTIVE, |
| IB_EVENT_PORT_ERR, |
| IB_EVENT_LID_CHANGE, |
| IB_EVENT_PKEY_CHANGE, |
| IB_EVENT_SM_CHANGE, |
| IB_EVENT_SRQ_ERR, |
| IB_EVENT_SRQ_LIMIT_REACHED, |
| IB_EVENT_QP_LAST_WQE_REACHED, |
| IB_EVENT_CLIENT_REREGISTER, |
| IB_EVENT_GID_CHANGE, |
| IB_EVENT_WQ_FATAL, |
| }; |
| |
| const char *__attribute_const__ ib_event_msg(enum ib_event_type event); |
| |
| struct ib_event { |
| struct ib_device *device; |
| union { |
| struct ib_cq *cq; |
| struct ib_qp *qp; |
| struct ib_srq *srq; |
| struct ib_wq *wq; |
| u32 port_num; |
| } element; |
| enum ib_event_type event; |
| }; |
| |
| struct ib_event_handler { |
| struct ib_device *device; |
| void (*handler)(struct ib_event_handler *, struct ib_event *); |
| struct list_head list; |
| }; |
| |
| #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ |
| do { \ |
| (_ptr)->device = _device; \ |
| (_ptr)->handler = _handler; \ |
| INIT_LIST_HEAD(&(_ptr)->list); \ |
| } while (0) |
| |
| struct ib_global_route { |
| const struct ib_gid_attr *sgid_attr; |
| union ib_gid dgid; |
| u32 flow_label; |
| u8 sgid_index; |
| u8 hop_limit; |
| u8 traffic_class; |
| }; |
| |
| struct ib_grh { |
| __be32 version_tclass_flow; |
| __be16 paylen; |
| u8 next_hdr; |
| u8 hop_limit; |
| union ib_gid sgid; |
| union ib_gid dgid; |
| }; |
| |
| union rdma_network_hdr { |
| struct ib_grh ibgrh; |
| struct { |
| /* The IB spec states that if it's IPv4, the header |
| * is located in the last 20 bytes of the header. |
| */ |
| u8 reserved[20]; |
| struct iphdr roce4grh; |
| }; |
| }; |
| |
| #define IB_QPN_MASK 0xFFFFFF |
| |
| enum { |
| IB_MULTICAST_QPN = 0xffffff |
| }; |
| |
| #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) |
| #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) |
| |
| enum ib_ah_flags { |
| IB_AH_GRH = 1 |
| }; |
| |
| enum ib_rate { |
| IB_RATE_PORT_CURRENT = 0, |
| IB_RATE_2_5_GBPS = 2, |
| IB_RATE_5_GBPS = 5, |
| IB_RATE_10_GBPS = 3, |
| IB_RATE_20_GBPS = 6, |
| IB_RATE_30_GBPS = 4, |
| IB_RATE_40_GBPS = 7, |
| IB_RATE_60_GBPS = 8, |
| IB_RATE_80_GBPS = 9, |
| IB_RATE_120_GBPS = 10, |
| IB_RATE_14_GBPS = 11, |
| IB_RATE_56_GBPS = 12, |
| IB_RATE_112_GBPS = 13, |
| IB_RATE_168_GBPS = 14, |
| IB_RATE_25_GBPS = 15, |
| IB_RATE_100_GBPS = 16, |
| IB_RATE_200_GBPS = 17, |
| IB_RATE_300_GBPS = 18, |
| IB_RATE_28_GBPS = 19, |
| IB_RATE_50_GBPS = 20, |
| IB_RATE_400_GBPS = 21, |
| IB_RATE_600_GBPS = 22, |
| }; |
| |
| /** |
| * ib_rate_to_mult - Convert the IB rate enum to a multiple of the |
| * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be |
| * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. |
| * @rate: rate to convert. |
| */ |
| __attribute_const__ int ib_rate_to_mult(enum ib_rate rate); |
| |
| /** |
| * ib_rate_to_mbps - Convert the IB rate enum to Mbps. |
| * For example, IB_RATE_2_5_GBPS will be converted to 2500. |
| * @rate: rate to convert. |
| */ |
| __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); |
| |
| |
| /** |
| * enum ib_mr_type - memory region type |
| * @IB_MR_TYPE_MEM_REG: memory region that is used for |
| * normal registration |
| * @IB_MR_TYPE_SG_GAPS: memory region that is capable to |
| * register any arbitrary sg lists (without |
| * the normal mr constraints - see |
| * ib_map_mr_sg) |
| * @IB_MR_TYPE_DM: memory region that is used for device |
| * memory registration |
| * @IB_MR_TYPE_USER: memory region that is used for the user-space |
| * application |
| * @IB_MR_TYPE_DMA: memory region that is used for DMA operations |
| * without address translations (VA=PA) |
| * @IB_MR_TYPE_INTEGRITY: memory region that is used for |
| * data integrity operations |
| */ |
| enum ib_mr_type { |
| IB_MR_TYPE_MEM_REG, |
| IB_MR_TYPE_SG_GAPS, |
| IB_MR_TYPE_DM, |
| IB_MR_TYPE_USER, |
| IB_MR_TYPE_DMA, |
| IB_MR_TYPE_INTEGRITY, |
| }; |
| |
| enum ib_mr_status_check { |
| IB_MR_CHECK_SIG_STATUS = 1, |
| }; |
| |
| /** |
| * struct ib_mr_status - Memory region status container |
| * |
| * @fail_status: Bitmask of MR checks status. For each |
| * failed check a corresponding status bit is set. |
| * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS |
| * failure. |
| */ |
| struct ib_mr_status { |
| u32 fail_status; |
| struct ib_sig_err sig_err; |
| }; |
| |
| /** |
| * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate |
| * enum. |
| * @mult: multiple to convert. |
| */ |
| __attribute_const__ enum ib_rate mult_to_ib_rate(int mult); |
| |
| struct rdma_ah_init_attr { |
| struct rdma_ah_attr *ah_attr; |
| u32 flags; |
| struct net_device *xmit_slave; |
| }; |
| |
| enum rdma_ah_attr_type { |
| RDMA_AH_ATTR_TYPE_UNDEFINED, |
| RDMA_AH_ATTR_TYPE_IB, |
| RDMA_AH_ATTR_TYPE_ROCE, |
| RDMA_AH_ATTR_TYPE_OPA, |
| }; |
| |
| struct ib_ah_attr { |
| u16 dlid; |
| u8 src_path_bits; |
| }; |
| |
| struct roce_ah_attr { |
| u8 dmac[ETH_ALEN]; |
| }; |
| |
| struct opa_ah_attr { |
| u32 dlid; |
| u8 src_path_bits; |
| bool make_grd; |
| }; |
| |
| struct rdma_ah_attr { |
| struct ib_global_route grh; |
| u8 sl; |
| u8 static_rate; |
| u32 port_num; |
| u8 ah_flags; |
| enum rdma_ah_attr_type type; |
| union { |
| struct ib_ah_attr ib; |
| struct roce_ah_attr roce; |
| struct opa_ah_attr opa; |
| }; |
| }; |
| |
| enum ib_wc_status { |
| IB_WC_SUCCESS, |
| IB_WC_LOC_LEN_ERR, |
| IB_WC_LOC_QP_OP_ERR, |
| IB_WC_LOC_EEC_OP_ERR, |
| IB_WC_LOC_PROT_ERR, |
| IB_WC_WR_FLUSH_ERR, |
| IB_WC_MW_BIND_ERR, |
| IB_WC_BAD_RESP_ERR, |
| IB_WC_LOC_ACCESS_ERR, |
| IB_WC_REM_INV_REQ_ERR, |
| IB_WC_REM_ACCESS_ERR, |
| IB_WC_REM_OP_ERR, |
| IB_WC_RETRY_EXC_ERR, |
| IB_WC_RNR_RETRY_EXC_ERR, |
| IB_WC_LOC_RDD_VIOL_ERR, |
| IB_WC_REM_INV_RD_REQ_ERR, |
| IB_WC_REM_ABORT_ERR, |
| IB_WC_INV_EECN_ERR, |
| IB_WC_INV_EEC_STATE_ERR, |
| IB_WC_FATAL_ERR, |
| IB_WC_RESP_TIMEOUT_ERR, |
| IB_WC_GENERAL_ERR |
| }; |
| |
| const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status); |
| |
| enum ib_wc_opcode { |
| IB_WC_SEND = IB_UVERBS_WC_SEND, |
| IB_WC_RDMA_WRITE = IB_UVERBS_WC_RDMA_WRITE, |
| IB_WC_RDMA_READ = IB_UVERBS_WC_RDMA_READ, |
| IB_WC_COMP_SWAP = IB_UVERBS_WC_COMP_SWAP, |
| IB_WC_FETCH_ADD = IB_UVERBS_WC_FETCH_ADD, |
| IB_WC_BIND_MW = IB_UVERBS_WC_BIND_MW, |
| IB_WC_LOCAL_INV = IB_UVERBS_WC_LOCAL_INV, |
| IB_WC_LSO = IB_UVERBS_WC_TSO, |
| IB_WC_ATOMIC_WRITE = IB_UVERBS_WC_ATOMIC_WRITE, |
| IB_WC_REG_MR, |
| IB_WC_MASKED_COMP_SWAP, |
| IB_WC_MASKED_FETCH_ADD, |
| IB_WC_FLUSH = IB_UVERBS_WC_FLUSH, |
| /* |
| * Set value of IB_WC_RECV so consumers can test if a completion is a |
| * receive by testing (opcode & IB_WC_RECV). |
| */ |
| IB_WC_RECV = 1 << 7, |
| IB_WC_RECV_RDMA_WITH_IMM |
| }; |
| |
| enum ib_wc_flags { |
| IB_WC_GRH = 1, |
| IB_WC_WITH_IMM = (1<<1), |
| IB_WC_WITH_INVALIDATE = (1<<2), |
| IB_WC_IP_CSUM_OK = (1<<3), |
| IB_WC_WITH_SMAC = (1<<4), |
| IB_WC_WITH_VLAN = (1<<5), |
| IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6), |
| }; |
| |
| struct ib_wc { |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| enum ib_wc_status status; |
| enum ib_wc_opcode opcode; |
| u32 vendor_err; |
| u32 byte_len; |
| struct ib_qp *qp; |
| union { |
| __be32 imm_data; |
| u32 invalidate_rkey; |
| } ex; |
| u32 src_qp; |
| u32 slid; |
| int wc_flags; |
| u16 pkey_index; |
| u8 sl; |
| u8 dlid_path_bits; |
| u32 port_num; /* valid only for DR SMPs on switches */ |
| u8 smac[ETH_ALEN]; |
| u16 vlan_id; |
| u8 network_hdr_type; |
| }; |
| |
| enum ib_cq_notify_flags { |
| IB_CQ_SOLICITED = 1 << 0, |
| IB_CQ_NEXT_COMP = 1 << 1, |
| IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, |
| IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, |
| }; |
| |
| enum ib_srq_type { |
| IB_SRQT_BASIC = IB_UVERBS_SRQT_BASIC, |
| IB_SRQT_XRC = IB_UVERBS_SRQT_XRC, |
| IB_SRQT_TM = IB_UVERBS_SRQT_TM, |
| }; |
| |
| static inline bool ib_srq_has_cq(enum ib_srq_type srq_type) |
| { |
| return srq_type == IB_SRQT_XRC || |
| srq_type == IB_SRQT_TM; |
| } |
| |
| enum ib_srq_attr_mask { |
| IB_SRQ_MAX_WR = 1 << 0, |
| IB_SRQ_LIMIT = 1 << 1, |
| }; |
| |
| struct ib_srq_attr { |
| u32 max_wr; |
| u32 max_sge; |
| u32 srq_limit; |
| }; |
| |
| struct ib_srq_init_attr { |
| void (*event_handler)(struct ib_event *, void *); |
| void *srq_context; |
| struct ib_srq_attr attr; |
| enum ib_srq_type srq_type; |
| |
| struct { |
| struct ib_cq *cq; |
| union { |
| struct { |
| struct ib_xrcd *xrcd; |
| } xrc; |
| |
| struct { |
| u32 max_num_tags; |
| } tag_matching; |
| }; |
| } ext; |
| }; |
| |
| struct ib_qp_cap { |
| u32 max_send_wr; |
| u32 max_recv_wr; |
| u32 max_send_sge; |
| u32 max_recv_sge; |
| u32 max_inline_data; |
| |
| /* |
| * Maximum number of rdma_rw_ctx structures in flight at a time. |
| * ib_create_qp() will calculate the right amount of neededed WRs |
| * and MRs based on this. |
| */ |
| u32 max_rdma_ctxs; |
| }; |
| |
| enum ib_sig_type { |
| IB_SIGNAL_ALL_WR, |
| IB_SIGNAL_REQ_WR |
| }; |
| |
| enum ib_qp_type { |
| /* |
| * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries |
| * here (and in that order) since the MAD layer uses them as |
| * indices into a 2-entry table. |
| */ |
| IB_QPT_SMI, |
| IB_QPT_GSI, |
| |
| IB_QPT_RC = IB_UVERBS_QPT_RC, |
| IB_QPT_UC = IB_UVERBS_QPT_UC, |
| IB_QPT_UD = IB_UVERBS_QPT_UD, |
| IB_QPT_RAW_IPV6, |
| IB_QPT_RAW_ETHERTYPE, |
| IB_QPT_RAW_PACKET = IB_UVERBS_QPT_RAW_PACKET, |
| IB_QPT_XRC_INI = IB_UVERBS_QPT_XRC_INI, |
| IB_QPT_XRC_TGT = IB_UVERBS_QPT_XRC_TGT, |
| IB_QPT_MAX, |
| IB_QPT_DRIVER = IB_UVERBS_QPT_DRIVER, |
| /* Reserve a range for qp types internal to the low level driver. |
| * These qp types will not be visible at the IB core layer, so the |
| * IB_QPT_MAX usages should not be affected in the core layer |
| */ |
| IB_QPT_RESERVED1 = 0x1000, |
| IB_QPT_RESERVED2, |
| IB_QPT_RESERVED3, |
| IB_QPT_RESERVED4, |
| IB_QPT_RESERVED5, |
| IB_QPT_RESERVED6, |
| IB_QPT_RESERVED7, |
| IB_QPT_RESERVED8, |
| IB_QPT_RESERVED9, |
| IB_QPT_RESERVED10, |
| }; |
| |
| enum ib_qp_create_flags { |
| IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, |
| IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = |
| IB_UVERBS_QP_CREATE_BLOCK_MULTICAST_LOOPBACK, |
| IB_QP_CREATE_CROSS_CHANNEL = 1 << 2, |
| IB_QP_CREATE_MANAGED_SEND = 1 << 3, |
| IB_QP_CREATE_MANAGED_RECV = 1 << 4, |
| IB_QP_CREATE_NETIF_QP = 1 << 5, |
| IB_QP_CREATE_INTEGRITY_EN = 1 << 6, |
| IB_QP_CREATE_NETDEV_USE = 1 << 7, |
| IB_QP_CREATE_SCATTER_FCS = |
| IB_UVERBS_QP_CREATE_SCATTER_FCS, |
| IB_QP_CREATE_CVLAN_STRIPPING = |
| IB_UVERBS_QP_CREATE_CVLAN_STRIPPING, |
| IB_QP_CREATE_SOURCE_QPN = 1 << 10, |
| IB_QP_CREATE_PCI_WRITE_END_PADDING = |
| IB_UVERBS_QP_CREATE_PCI_WRITE_END_PADDING, |
| /* reserve bits 26-31 for low level drivers' internal use */ |
| IB_QP_CREATE_RESERVED_START = 1 << 26, |
| IB_QP_CREATE_RESERVED_END = 1 << 31, |
| }; |
| |
| /* |
| * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler |
| * callback to destroy the passed in QP. |
| */ |
| |
| struct ib_qp_init_attr { |
| /* Consumer's event_handler callback must not block */ |
| void (*event_handler)(struct ib_event *, void *); |
| |
| void *qp_context; |
| struct ib_cq *send_cq; |
| struct ib_cq *recv_cq; |
| struct ib_srq *srq; |
| struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
| struct ib_qp_cap cap; |
| enum ib_sig_type sq_sig_type; |
| enum ib_qp_type qp_type; |
| u32 create_flags; |
| |
| /* |
| * Only needed for special QP types, or when using the RW API. |
| */ |
| u32 port_num; |
| struct ib_rwq_ind_table *rwq_ind_tbl; |
| u32 source_qpn; |
| }; |
| |
| struct ib_qp_open_attr { |
| void (*event_handler)(struct ib_event *, void *); |
| void *qp_context; |
| u32 qp_num; |
| enum ib_qp_type qp_type; |
| }; |
| |
| enum ib_rnr_timeout { |
| IB_RNR_TIMER_655_36 = 0, |
| IB_RNR_TIMER_000_01 = 1, |
| IB_RNR_TIMER_000_02 = 2, |
| IB_RNR_TIMER_000_03 = 3, |
| IB_RNR_TIMER_000_04 = 4, |
| IB_RNR_TIMER_000_06 = 5, |
| IB_RNR_TIMER_000_08 = 6, |
| IB_RNR_TIMER_000_12 = 7, |
| IB_RNR_TIMER_000_16 = 8, |
| IB_RNR_TIMER_000_24 = 9, |
| IB_RNR_TIMER_000_32 = 10, |
| IB_RNR_TIMER_000_48 = 11, |
| IB_RNR_TIMER_000_64 = 12, |
| IB_RNR_TIMER_000_96 = 13, |
| IB_RNR_TIMER_001_28 = 14, |
| IB_RNR_TIMER_001_92 = 15, |
| IB_RNR_TIMER_002_56 = 16, |
| IB_RNR_TIMER_003_84 = 17, |
| IB_RNR_TIMER_005_12 = 18, |
| IB_RNR_TIMER_007_68 = 19, |
| IB_RNR_TIMER_010_24 = 20, |
| IB_RNR_TIMER_015_36 = 21, |
| IB_RNR_TIMER_020_48 = 22, |
| IB_RNR_TIMER_030_72 = 23, |
| IB_RNR_TIMER_040_96 = 24, |
| IB_RNR_TIMER_061_44 = 25, |
| IB_RNR_TIMER_081_92 = 26, |
| IB_RNR_TIMER_122_88 = 27, |
| IB_RNR_TIMER_163_84 = 28, |
| IB_RNR_TIMER_245_76 = 29, |
| IB_RNR_TIMER_327_68 = 30, |
| IB_RNR_TIMER_491_52 = 31 |
| }; |
| |
| enum ib_qp_attr_mask { |
| IB_QP_STATE = 1, |
| IB_QP_CUR_STATE = (1<<1), |
| IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), |
| IB_QP_ACCESS_FLAGS = (1<<3), |
| IB_QP_PKEY_INDEX = (1<<4), |
| IB_QP_PORT = (1<<5), |
| IB_QP_QKEY = (1<<6), |
| IB_QP_AV = (1<<7), |
| IB_QP_PATH_MTU = (1<<8), |
| IB_QP_TIMEOUT = (1<<9), |
| IB_QP_RETRY_CNT = (1<<10), |
| IB_QP_RNR_RETRY = (1<<11), |
| IB_QP_RQ_PSN = (1<<12), |
| IB_QP_MAX_QP_RD_ATOMIC = (1<<13), |
| IB_QP_ALT_PATH = (1<<14), |
| IB_QP_MIN_RNR_TIMER = (1<<15), |
| IB_QP_SQ_PSN = (1<<16), |
| IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), |
| IB_QP_PATH_MIG_STATE = (1<<18), |
| IB_QP_CAP = (1<<19), |
| IB_QP_DEST_QPN = (1<<20), |
| IB_QP_RESERVED1 = (1<<21), |
| IB_QP_RESERVED2 = (1<<22), |
| IB_QP_RESERVED3 = (1<<23), |
| IB_QP_RESERVED4 = (1<<24), |
| IB_QP_RATE_LIMIT = (1<<25), |
| |
| IB_QP_ATTR_STANDARD_BITS = GENMASK(20, 0), |
| }; |
| |
| enum ib_qp_state { |
| IB_QPS_RESET, |
| IB_QPS_INIT, |
| IB_QPS_RTR, |
| IB_QPS_RTS, |
| IB_QPS_SQD, |
| IB_QPS_SQE, |
| IB_QPS_ERR |
| }; |
| |
| enum ib_mig_state { |
| IB_MIG_MIGRATED, |
| IB_MIG_REARM, |
| IB_MIG_ARMED |
| }; |
| |
| enum ib_mw_type { |
| IB_MW_TYPE_1 = 1, |
| IB_MW_TYPE_2 = 2 |
| }; |
| |
| struct ib_qp_attr { |
| enum ib_qp_state qp_state; |
| enum ib_qp_state cur_qp_state; |
| enum ib_mtu path_mtu; |
| enum ib_mig_state path_mig_state; |
| u32 qkey; |
| u32 rq_psn; |
| u32 sq_psn; |
| u32 dest_qp_num; |
| int qp_access_flags; |
| struct ib_qp_cap cap; |
| struct rdma_ah_attr ah_attr; |
| struct rdma_ah_attr alt_ah_attr; |
| u16 pkey_index; |
| u16 alt_pkey_index; |
| u8 en_sqd_async_notify; |
| u8 sq_draining; |
| u8 max_rd_atomic; |
| u8 max_dest_rd_atomic; |
| u8 min_rnr_timer; |
| u32 port_num; |
| u8 timeout; |
| u8 retry_cnt; |
| u8 rnr_retry; |
| u32 alt_port_num; |
| u8 alt_timeout; |
| u32 rate_limit; |
| struct net_device *xmit_slave; |
| }; |
| |
| enum ib_wr_opcode { |
| /* These are shared with userspace */ |
| IB_WR_RDMA_WRITE = IB_UVERBS_WR_RDMA_WRITE, |
| IB_WR_RDMA_WRITE_WITH_IMM = IB_UVERBS_WR_RDMA_WRITE_WITH_IMM, |
| IB_WR_SEND = IB_UVERBS_WR_SEND, |
| IB_WR_SEND_WITH_IMM = IB_UVERBS_WR_SEND_WITH_IMM, |
| IB_WR_RDMA_READ = IB_UVERBS_WR_RDMA_READ, |
| IB_WR_ATOMIC_CMP_AND_SWP = IB_UVERBS_WR_ATOMIC_CMP_AND_SWP, |
| IB_WR_ATOMIC_FETCH_AND_ADD = IB_UVERBS_WR_ATOMIC_FETCH_AND_ADD, |
| IB_WR_BIND_MW = IB_UVERBS_WR_BIND_MW, |
| IB_WR_LSO = IB_UVERBS_WR_TSO, |
| IB_WR_SEND_WITH_INV = IB_UVERBS_WR_SEND_WITH_INV, |
| IB_WR_RDMA_READ_WITH_INV = IB_UVERBS_WR_RDMA_READ_WITH_INV, |
| IB_WR_LOCAL_INV = IB_UVERBS_WR_LOCAL_INV, |
| IB_WR_MASKED_ATOMIC_CMP_AND_SWP = |
| IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP, |
| IB_WR_MASKED_ATOMIC_FETCH_AND_ADD = |
| IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD, |
| IB_WR_FLUSH = IB_UVERBS_WR_FLUSH, |
| IB_WR_ATOMIC_WRITE = IB_UVERBS_WR_ATOMIC_WRITE, |
| |
| /* These are kernel only and can not be issued by userspace */ |
| IB_WR_REG_MR = 0x20, |
| IB_WR_REG_MR_INTEGRITY, |
| |
| /* reserve values for low level drivers' internal use. |
| * These values will not be used at all in the ib core layer. |
| */ |
| IB_WR_RESERVED1 = 0xf0, |
| IB_WR_RESERVED2, |
| IB_WR_RESERVED3, |
| IB_WR_RESERVED4, |
| IB_WR_RESERVED5, |
| IB_WR_RESERVED6, |
| IB_WR_RESERVED7, |
| IB_WR_RESERVED8, |
| IB_WR_RESERVED9, |
| IB_WR_RESERVED10, |
| }; |
| |
| enum ib_send_flags { |
| IB_SEND_FENCE = 1, |
| IB_SEND_SIGNALED = (1<<1), |
| IB_SEND_SOLICITED = (1<<2), |
| IB_SEND_INLINE = (1<<3), |
| IB_SEND_IP_CSUM = (1<<4), |
| |
| /* reserve bits 26-31 for low level drivers' internal use */ |
| IB_SEND_RESERVED_START = (1 << 26), |
| IB_SEND_RESERVED_END = (1 << 31), |
| }; |
| |
| struct ib_sge { |
| u64 addr; |
| u32 length; |
| u32 lkey; |
| }; |
| |
| struct ib_cqe { |
| void (*done)(struct ib_cq *cq, struct ib_wc *wc); |
| }; |
| |
| struct ib_send_wr { |
| struct ib_send_wr *next; |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| struct ib_sge *sg_list; |
| int num_sge; |
| enum ib_wr_opcode opcode; |
| int send_flags; |
| union { |
| __be32 imm_data; |
| u32 invalidate_rkey; |
| } ex; |
| }; |
| |
| struct ib_rdma_wr { |
| struct ib_send_wr wr; |
| u64 remote_addr; |
| u32 rkey; |
| }; |
| |
| static inline const struct ib_rdma_wr *rdma_wr(const struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_rdma_wr, wr); |
| } |
| |
| struct ib_atomic_wr { |
| struct ib_send_wr wr; |
| u64 remote_addr; |
| u64 compare_add; |
| u64 swap; |
| u64 compare_add_mask; |
| u64 swap_mask; |
| u32 rkey; |
| }; |
| |
| static inline const struct ib_atomic_wr *atomic_wr(const struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_atomic_wr, wr); |
| } |
| |
| struct ib_ud_wr { |
| struct ib_send_wr wr; |
| struct ib_ah *ah; |
| void *header; |
| int hlen; |
| int mss; |
| u32 remote_qpn; |
| u32 remote_qkey; |
| u16 pkey_index; /* valid for GSI only */ |
| u32 port_num; /* valid for DR SMPs on switch only */ |
| }; |
| |
| static inline const struct ib_ud_wr *ud_wr(const struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_ud_wr, wr); |
| } |
| |
| struct ib_reg_wr { |
| struct ib_send_wr wr; |
| struct ib_mr *mr; |
| u32 key; |
| int access; |
| }; |
| |
| static inline const struct ib_reg_wr *reg_wr(const struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_reg_wr, wr); |
| } |
| |
| struct ib_recv_wr { |
| struct ib_recv_wr *next; |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| struct ib_sge *sg_list; |
| int num_sge; |
| }; |
| |
| enum ib_access_flags { |
| IB_ACCESS_LOCAL_WRITE = IB_UVERBS_ACCESS_LOCAL_WRITE, |
| IB_ACCESS_REMOTE_WRITE = IB_UVERBS_ACCESS_REMOTE_WRITE, |
| IB_ACCESS_REMOTE_READ = IB_UVERBS_ACCESS_REMOTE_READ, |
| IB_ACCESS_REMOTE_ATOMIC = IB_UVERBS_ACCESS_REMOTE_ATOMIC, |
| IB_ACCESS_MW_BIND = IB_UVERBS_ACCESS_MW_BIND, |
| IB_ZERO_BASED = IB_UVERBS_ACCESS_ZERO_BASED, |
| IB_ACCESS_ON_DEMAND = IB_UVERBS_ACCESS_ON_DEMAND, |
| IB_ACCESS_HUGETLB = IB_UVERBS_ACCESS_HUGETLB, |
| IB_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_RELAXED_ORDERING, |
| IB_ACCESS_FLUSH_GLOBAL = IB_UVERBS_ACCESS_FLUSH_GLOBAL, |
| IB_ACCESS_FLUSH_PERSISTENT = IB_UVERBS_ACCESS_FLUSH_PERSISTENT, |
| |
| IB_ACCESS_OPTIONAL = IB_UVERBS_ACCESS_OPTIONAL_RANGE, |
| IB_ACCESS_SUPPORTED = |
| ((IB_ACCESS_FLUSH_PERSISTENT << 1) - 1) | IB_ACCESS_OPTIONAL, |
| }; |
| |
| /* |
| * XXX: these are apparently used for ->rereg_user_mr, no idea why they |
| * are hidden here instead of a uapi header! |
| */ |
| enum ib_mr_rereg_flags { |
| IB_MR_REREG_TRANS = 1, |
| IB_MR_REREG_PD = (1<<1), |
| IB_MR_REREG_ACCESS = (1<<2), |
| IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1) |
| }; |
| |
| struct ib_umem; |
| |
| enum rdma_remove_reason { |
| /* |
| * Userspace requested uobject deletion or initial try |
| * to remove uobject via cleanup. Call could fail |
| */ |
| RDMA_REMOVE_DESTROY, |
| /* Context deletion. This call should delete the actual object itself */ |
| RDMA_REMOVE_CLOSE, |
| /* Driver is being hot-unplugged. This call should delete the actual object itself */ |
| RDMA_REMOVE_DRIVER_REMOVE, |
| /* uobj is being cleaned-up before being committed */ |
| RDMA_REMOVE_ABORT, |
| /* The driver failed to destroy the uobject and is being disconnected */ |
| RDMA_REMOVE_DRIVER_FAILURE, |
| }; |
| |
| struct ib_rdmacg_object { |
| #ifdef CONFIG_CGROUP_RDMA |
| struct rdma_cgroup *cg; /* owner rdma cgroup */ |
| #endif |
| }; |
| |
| struct ib_ucontext { |
| struct ib_device *device; |
| struct ib_uverbs_file *ufile; |
| |
| struct ib_rdmacg_object cg_obj; |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct rdma_restrack_entry res; |
| struct xarray mmap_xa; |
| }; |
| |
| struct ib_uobject { |
| u64 user_handle; /* handle given to us by userspace */ |
| /* ufile & ucontext owning this object */ |
| struct ib_uverbs_file *ufile; |
| /* FIXME, save memory: ufile->context == context */ |
| struct ib_ucontext *context; /* associated user context */ |
| void *object; /* containing object */ |
| struct list_head list; /* link to context's list */ |
| struct ib_rdmacg_object cg_obj; /* rdmacg object */ |
| int id; /* index into kernel idr */ |
| struct kref ref; |
| atomic_t usecnt; /* protects exclusive access */ |
| struct rcu_head rcu; /* kfree_rcu() overhead */ |
| |
| const struct uverbs_api_object *uapi_object; |
| }; |
| |
| struct ib_udata { |
| const void __user *inbuf; |
| void __user *outbuf; |
| size_t inlen; |
| size_t outlen; |
| }; |
| |
| struct ib_pd { |
| u32 local_dma_lkey; |
| u32 flags; |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| atomic_t usecnt; /* count all resources */ |
| |
| u32 unsafe_global_rkey; |
| |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct ib_mr *__internal_mr; |
| struct rdma_restrack_entry res; |
| }; |
| |
| struct ib_xrcd { |
| struct ib_device *device; |
| atomic_t usecnt; /* count all exposed resources */ |
| struct inode *inode; |
| struct rw_semaphore tgt_qps_rwsem; |
| struct xarray tgt_qps; |
| }; |
| |
| struct ib_ah { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_uobject *uobject; |
| const struct ib_gid_attr *sgid_attr; |
| enum rdma_ah_attr_type type; |
| }; |
| |
| typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); |
| |
| enum ib_poll_context { |
| IB_POLL_SOFTIRQ, /* poll from softirq context */ |
| IB_POLL_WORKQUEUE, /* poll from workqueue */ |
| IB_POLL_UNBOUND_WORKQUEUE, /* poll from unbound workqueue */ |
| IB_POLL_LAST_POOL_TYPE = IB_POLL_UNBOUND_WORKQUEUE, |
| |
| IB_POLL_DIRECT, /* caller context, no hw completions */ |
| }; |
| |
| struct ib_cq { |
| struct ib_device *device; |
| struct ib_ucq_object *uobject; |
| ib_comp_handler comp_handler; |
| void (*event_handler)(struct ib_event *, void *); |
| void *cq_context; |
| int cqe; |
| unsigned int cqe_used; |
| atomic_t usecnt; /* count number of work queues */ |
| enum ib_poll_context poll_ctx; |
| struct ib_wc *wc; |
| struct list_head pool_entry; |
| union { |
| struct irq_poll iop; |
| struct work_struct work; |
| }; |
| struct workqueue_struct *comp_wq; |
| struct dim *dim; |
| |
| /* updated only by trace points */ |
| ktime_t timestamp; |
| u8 interrupt:1; |
| u8 shared:1; |
| unsigned int comp_vector; |
| |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct rdma_restrack_entry res; |
| }; |
| |
| struct ib_srq { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_usrq_object *uobject; |
| void (*event_handler)(struct ib_event *, void *); |
| void *srq_context; |
| enum ib_srq_type srq_type; |
| atomic_t usecnt; |
| |
| struct { |
| struct ib_cq *cq; |
| union { |
| struct { |
| struct ib_xrcd *xrcd; |
| u32 srq_num; |
| } xrc; |
| }; |
| } ext; |
| |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct rdma_restrack_entry res; |
| }; |
| |
| enum ib_raw_packet_caps { |
| /* |
| * Strip cvlan from incoming packet and report it in the matching work |
| * completion is supported. |
| */ |
| IB_RAW_PACKET_CAP_CVLAN_STRIPPING = |
| IB_UVERBS_RAW_PACKET_CAP_CVLAN_STRIPPING, |
| /* |
| * Scatter FCS field of an incoming packet to host memory is supported. |
| */ |
| IB_RAW_PACKET_CAP_SCATTER_FCS = IB_UVERBS_RAW_PACKET_CAP_SCATTER_FCS, |
| /* Checksum offloads are supported (for both send and receive). */ |
| IB_RAW_PACKET_CAP_IP_CSUM = IB_UVERBS_RAW_PACKET_CAP_IP_CSUM, |
| /* |
| * When a packet is received for an RQ with no receive WQEs, the |
| * packet processing is delayed. |
| */ |
| IB_RAW_PACKET_CAP_DELAY_DROP = IB_UVERBS_RAW_PACKET_CAP_DELAY_DROP, |
| }; |
| |
| enum ib_wq_type { |
| IB_WQT_RQ = IB_UVERBS_WQT_RQ, |
| }; |
| |
| enum ib_wq_state { |
| IB_WQS_RESET, |
| IB_WQS_RDY, |
| IB_WQS_ERR |
| }; |
| |
| struct ib_wq { |
| struct ib_device *device; |
| struct ib_uwq_object *uobject; |
| void *wq_context; |
| void (*event_handler)(struct ib_event *, void *); |
| struct ib_pd *pd; |
| struct ib_cq *cq; |
| u32 wq_num; |
| enum ib_wq_state state; |
| enum ib_wq_type wq_type; |
| atomic_t usecnt; |
| }; |
| |
| enum ib_wq_flags { |
| IB_WQ_FLAGS_CVLAN_STRIPPING = IB_UVERBS_WQ_FLAGS_CVLAN_STRIPPING, |
| IB_WQ_FLAGS_SCATTER_FCS = IB_UVERBS_WQ_FLAGS_SCATTER_FCS, |
| IB_WQ_FLAGS_DELAY_DROP = IB_UVERBS_WQ_FLAGS_DELAY_DROP, |
| IB_WQ_FLAGS_PCI_WRITE_END_PADDING = |
| IB_UVERBS_WQ_FLAGS_PCI_WRITE_END_PADDING, |
| }; |
| |
| struct ib_wq_init_attr { |
| void *wq_context; |
| enum ib_wq_type wq_type; |
| u32 max_wr; |
| u32 max_sge; |
| struct ib_cq *cq; |
| void (*event_handler)(struct ib_event *, void *); |
| u32 create_flags; /* Use enum ib_wq_flags */ |
| }; |
| |
| enum ib_wq_attr_mask { |
| IB_WQ_STATE = 1 << 0, |
| IB_WQ_CUR_STATE = 1 << 1, |
| IB_WQ_FLAGS = 1 << 2, |
| }; |
| |
| struct ib_wq_attr { |
| enum ib_wq_state wq_state; |
| enum ib_wq_state curr_wq_state; |
| u32 flags; /* Use enum ib_wq_flags */ |
| u32 flags_mask; /* Use enum ib_wq_flags */ |
| }; |
| |
| struct ib_rwq_ind_table { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| atomic_t usecnt; |
| u32 ind_tbl_num; |
| u32 log_ind_tbl_size; |
| struct ib_wq **ind_tbl; |
| }; |
| |
| struct ib_rwq_ind_table_init_attr { |
| u32 log_ind_tbl_size; |
| /* Each entry is a pointer to Receive Work Queue */ |
| struct ib_wq **ind_tbl; |
| }; |
| |
| enum port_pkey_state { |
| IB_PORT_PKEY_NOT_VALID = 0, |
| IB_PORT_PKEY_VALID = 1, |
| IB_PORT_PKEY_LISTED = 2, |
| }; |
| |
| struct ib_qp_security; |
| |
| struct ib_port_pkey { |
| enum port_pkey_state state; |
| u16 pkey_index; |
| u32 port_num; |
| struct list_head qp_list; |
| struct list_head to_error_list; |
| struct ib_qp_security *sec; |
| }; |
| |
| struct ib_ports_pkeys { |
| struct ib_port_pkey main; |
| struct ib_port_pkey alt; |
| }; |
| |
| struct ib_qp_security { |
| struct ib_qp *qp; |
| struct ib_device *dev; |
| /* Hold this mutex when changing port and pkey settings. */ |
| struct mutex mutex; |
| struct ib_ports_pkeys *ports_pkeys; |
| /* A list of all open shared QP handles. Required to enforce security |
| * properly for all users of a shared QP. |
| */ |
| struct list_head shared_qp_list; |
| void *security; |
| bool destroying; |
| atomic_t error_list_count; |
| struct completion error_complete; |
| int error_comps_pending; |
| }; |
| |
| /* |
| * @max_write_sge: Maximum SGE elements per RDMA WRITE request. |
| * @max_read_sge: Maximum SGE elements per RDMA READ request. |
| */ |
| struct ib_qp { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_cq *send_cq; |
| struct ib_cq *recv_cq; |
| spinlock_t mr_lock; |
| int mrs_used; |
| struct list_head rdma_mrs; |
| struct list_head sig_mrs; |
| struct ib_srq *srq; |
| struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
| struct list_head xrcd_list; |
| |
| /* count times opened, mcast attaches, flow attaches */ |
| atomic_t usecnt; |
| struct list_head open_list; |
| struct ib_qp *real_qp; |
| struct ib_uqp_object *uobject; |
| void (*event_handler)(struct ib_event *, void *); |
| void *qp_context; |
| /* sgid_attrs associated with the AV's */ |
| const struct ib_gid_attr *av_sgid_attr; |
| const struct ib_gid_attr *alt_path_sgid_attr; |
| u32 qp_num; |
| u32 max_write_sge; |
| u32 max_read_sge; |
| enum ib_qp_type qp_type; |
| struct ib_rwq_ind_table *rwq_ind_tbl; |
| struct ib_qp_security *qp_sec; |
| u32 port; |
| |
| bool integrity_en; |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct rdma_restrack_entry res; |
| |
| /* The counter the qp is bind to */ |
| struct rdma_counter *counter; |
| }; |
| |
| struct ib_dm { |
| struct ib_device *device; |
| u32 length; |
| u32 flags; |
| struct ib_uobject *uobject; |
| atomic_t usecnt; |
| }; |
| |
| struct ib_mr { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| u32 lkey; |
| u32 rkey; |
| u64 iova; |
| u64 length; |
| unsigned int page_size; |
| enum ib_mr_type type; |
| bool need_inval; |
| union { |
| struct ib_uobject *uobject; /* user */ |
| struct list_head qp_entry; /* FR */ |
| }; |
| |
| struct ib_dm *dm; |
| struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */ |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct rdma_restrack_entry res; |
| }; |
| |
| struct ib_mw { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_uobject *uobject; |
| u32 rkey; |
| enum ib_mw_type type; |
| }; |
| |
| /* Supported steering options */ |
| enum ib_flow_attr_type { |
| /* steering according to rule specifications */ |
| IB_FLOW_ATTR_NORMAL = 0x0, |
| /* default unicast and multicast rule - |
| * receive all Eth traffic which isn't steered to any QP |
| */ |
| IB_FLOW_ATTR_ALL_DEFAULT = 0x1, |
| /* default multicast rule - |
| * receive all Eth multicast traffic which isn't steered to any QP |
| */ |
| IB_FLOW_ATTR_MC_DEFAULT = 0x2, |
| /* sniffer rule - receive all port traffic */ |
| IB_FLOW_ATTR_SNIFFER = 0x3 |
| }; |
| |
| /* Supported steering header types */ |
| enum ib_flow_spec_type { |
| /* L2 headers*/ |
| IB_FLOW_SPEC_ETH = 0x20, |
| IB_FLOW_SPEC_IB = 0x22, |
| /* L3 header*/ |
| IB_FLOW_SPEC_IPV4 = 0x30, |
| IB_FLOW_SPEC_IPV6 = 0x31, |
| IB_FLOW_SPEC_ESP = 0x34, |
| /* L4 headers*/ |
| IB_FLOW_SPEC_TCP = 0x40, |
| IB_FLOW_SPEC_UDP = 0x41, |
| IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50, |
| IB_FLOW_SPEC_GRE = 0x51, |
| IB_FLOW_SPEC_MPLS = 0x60, |
| IB_FLOW_SPEC_INNER = 0x100, |
| /* Actions */ |
| IB_FLOW_SPEC_ACTION_TAG = 0x1000, |
| IB_FLOW_SPEC_ACTION_DROP = 0x1001, |
| IB_FLOW_SPEC_ACTION_HANDLE = 0x1002, |
| IB_FLOW_SPEC_ACTION_COUNT = 0x1003, |
| }; |
| #define IB_FLOW_SPEC_LAYER_MASK 0xF0 |
| #define IB_FLOW_SPEC_SUPPORT_LAYERS 10 |
| |
| enum ib_flow_flags { |
| IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */ |
| IB_FLOW_ATTR_FLAGS_EGRESS = 1UL << 2, /* Egress flow */ |
| IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 3 /* Must be last */ |
| }; |
| |
| struct ib_flow_eth_filter { |
| u8 dst_mac[6]; |
| u8 src_mac[6]; |
| __be16 ether_type; |
| __be16 vlan_tag; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_eth { |
| u32 type; |
| u16 size; |
| struct ib_flow_eth_filter val; |
| struct ib_flow_eth_filter mask; |
| }; |
| |
| struct ib_flow_ib_filter { |
| __be16 dlid; |
| __u8 sl; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_ib { |
| u32 type; |
| u16 size; |
| struct ib_flow_ib_filter val; |
| struct ib_flow_ib_filter mask; |
| }; |
| |
| /* IPv4 header flags */ |
| enum ib_ipv4_flags { |
| IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */ |
| IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the |
| last have this flag set */ |
| }; |
| |
| struct ib_flow_ipv4_filter { |
| __be32 src_ip; |
| __be32 dst_ip; |
| u8 proto; |
| u8 tos; |
| u8 ttl; |
| u8 flags; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_ipv4 { |
| u32 type; |
| u16 size; |
| struct ib_flow_ipv4_filter val; |
| struct ib_flow_ipv4_filter mask; |
| }; |
| |
| struct ib_flow_ipv6_filter { |
| u8 src_ip[16]; |
| u8 dst_ip[16]; |
| __be32 flow_label; |
| u8 next_hdr; |
| u8 traffic_class; |
| u8 hop_limit; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_ipv6 { |
| u32 type; |
| u16 size; |
| struct ib_flow_ipv6_filter val; |
| struct ib_flow_ipv6_filter mask; |
| }; |
| |
| struct ib_flow_tcp_udp_filter { |
| __be16 dst_port; |
| __be16 src_port; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_tcp_udp { |
| u32 type; |
| u16 size; |
| struct ib_flow_tcp_udp_filter val; |
| struct ib_flow_tcp_udp_filter mask; |
| }; |
| |
| struct ib_flow_tunnel_filter { |
| __be32 tunnel_id; |
| u8 real_sz[]; |
| }; |
| |
| /* ib_flow_spec_tunnel describes the Vxlan tunnel |
| * the tunnel_id from val has the vni value |
| */ |
| struct ib_flow_spec_tunnel { |
| u32 type; |
| u16 size; |
| struct ib_flow_tunnel_filter val; |
| struct ib_flow_tunnel_filter mask; |
| }; |
| |
| struct ib_flow_esp_filter { |
| __be32 spi; |
| __be32 seq; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_esp { |
| u32 type; |
| u16 size; |
| struct ib_flow_esp_filter val; |
| struct ib_flow_esp_filter mask; |
| }; |
| |
| struct ib_flow_gre_filter { |
| __be16 c_ks_res0_ver; |
| __be16 protocol; |
| __be32 key; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_gre { |
| u32 type; |
| u16 size; |
| struct ib_flow_gre_filter val; |
| struct ib_flow_gre_filter mask; |
| }; |
| |
| struct ib_flow_mpls_filter { |
| __be32 tag; |
| /* Must be last */ |
| u8 real_sz[]; |
| }; |
| |
| struct ib_flow_spec_mpls { |
| u32 type; |
| u16 size; |
| struct ib_flow_mpls_filter val; |
| struct ib_flow_mpls_filter mask; |
| }; |
| |
| struct ib_flow_spec_action_tag { |
| enum ib_flow_spec_type type; |
| u16 size; |
| u32 tag_id; |
| }; |
| |
| struct ib_flow_spec_action_drop { |
| enum ib_flow_spec_type type; |
| u16 size; |
| }; |
| |
| struct ib_flow_spec_action_handle { |
| enum ib_flow_spec_type type; |
| u16 size; |
| struct ib_flow_action *act; |
| }; |
| |
| enum ib_counters_description { |
| IB_COUNTER_PACKETS, |
| IB_COUNTER_BYTES, |
| }; |
| |
| struct ib_flow_spec_action_count { |
| enum ib_flow_spec_type type; |
| u16 size; |
| struct ib_counters *counters; |
| }; |
| |
| union ib_flow_spec { |
| struct { |
| u32 type; |
| u16 size; |
| }; |
| struct ib_flow_spec_eth eth; |
| struct ib_flow_spec_ib ib; |
| struct ib_flow_spec_ipv4 ipv4; |
| struct ib_flow_spec_tcp_udp tcp_udp; |
| struct ib_flow_spec_ipv6 ipv6; |
| struct ib_flow_spec_tunnel tunnel; |
| struct ib_flow_spec_esp esp; |
| struct ib_flow_spec_gre gre; |
| struct ib_flow_spec_mpls mpls; |
| struct ib_flow_spec_action_tag flow_tag; |
| struct ib_flow_spec_action_drop drop; |
| struct ib_flow_spec_action_handle action; |
| struct ib_flow_spec_action_count flow_count; |
| }; |
| |
| struct ib_flow_attr { |
| enum ib_flow_attr_type type; |
| u16 size; |
| u16 priority; |
| u32 flags; |
| u8 num_of_specs; |
| u32 port; |
| union ib_flow_spec flows[]; |
| }; |
| |
| struct ib_flow { |
| struct ib_qp *qp; |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| }; |
| |
| enum ib_flow_action_type { |
| IB_FLOW_ACTION_UNSPECIFIED, |
| IB_FLOW_ACTION_ESP = 1, |
| }; |
| |
| struct ib_flow_action_attrs_esp_keymats { |
| enum ib_uverbs_flow_action_esp_keymat protocol; |
| union { |
| struct ib_uverbs_flow_action_esp_keymat_aes_gcm aes_gcm; |
| } keymat; |
| }; |
| |
| struct ib_flow_action_attrs_esp_replays { |
| enum ib_uverbs_flow_action_esp_replay protocol; |
| union { |
| struct ib_uverbs_flow_action_esp_replay_bmp bmp; |
| } replay; |
| }; |
| |
| enum ib_flow_action_attrs_esp_flags { |
| /* All user-space flags at the top: Use enum ib_uverbs_flow_action_esp_flags |
| * This is done in order to share the same flags between user-space and |
| * kernel and spare an unnecessary translation. |
| */ |
| |
| /* Kernel flags */ |
| IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED = 1ULL << 32, |
| IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS = 1ULL << 33, |
| }; |
| |
| struct ib_flow_spec_list { |
| struct ib_flow_spec_list *next; |
| union ib_flow_spec spec; |
| }; |
| |
| struct ib_flow_action_attrs_esp { |
| struct ib_flow_action_attrs_esp_keymats *keymat; |
| struct ib_flow_action_attrs_esp_replays *replay; |
| struct ib_flow_spec_list *encap; |
| /* Used only if IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED is enabled. |
| * Value of 0 is a valid value. |
| */ |
| u32 esn; |
| u32 spi; |
| u32 seq; |
| u32 tfc_pad; |
| /* Use enum ib_flow_action_attrs_esp_flags */ |
| u64 flags; |
| u64 hard_limit_pkts; |
| }; |
| |
| struct ib_flow_action { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| enum ib_flow_action_type type; |
| atomic_t usecnt; |
| }; |
| |
| struct ib_mad; |
| |
| enum ib_process_mad_flags { |
| IB_MAD_IGNORE_MKEY = 1, |
| IB_MAD_IGNORE_BKEY = 2, |
| IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY |
| }; |
| |
| enum ib_mad_result { |
| IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ |
| IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ |
| IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ |
| IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ |
| }; |
| |
| struct ib_port_cache { |
| u64 subnet_prefix; |
| struct ib_pkey_cache *pkey; |
| struct ib_gid_table *gid; |
| u8 lmc; |
| enum ib_port_state port_state; |
| }; |
| |
| struct ib_port_immutable { |
| int pkey_tbl_len; |
| int gid_tbl_len; |
| u32 core_cap_flags; |
| u32 max_mad_size; |
| }; |
| |
| struct ib_port_data { |
| struct ib_device *ib_dev; |
| |
| struct ib_port_immutable immutable; |
| |
| spinlock_t pkey_list_lock; |
| |
| spinlock_t netdev_lock; |
| |
| struct list_head pkey_list; |
| |
| struct ib_port_cache cache; |
| |
| struct net_device __rcu *netdev; |
| netdevice_tracker netdev_tracker; |
| struct hlist_node ndev_hash_link; |
| struct rdma_port_counter port_counter; |
| struct ib_port *sysfs; |
| }; |
| |
| /* rdma netdev type - specifies protocol type */ |
| enum rdma_netdev_t { |
| RDMA_NETDEV_OPA_VNIC, |
| RDMA_NETDEV_IPOIB, |
| }; |
| |
| /** |
| * struct rdma_netdev - rdma netdev |
| * For cases where netstack interfacing is required. |
| */ |
| struct rdma_netdev { |
| void *clnt_priv; |
| struct ib_device *hca; |
| u32 port_num; |
| int mtu; |
| |
| /* |
| * cleanup function must be specified. |
| * FIXME: This is only used for OPA_VNIC and that usage should be |
| * removed too. |
| */ |
| void (*free_rdma_netdev)(struct net_device *netdev); |
| |
| /* control functions */ |
| void (*set_id)(struct net_device *netdev, int id); |
| /* send packet */ |
| int (*send)(struct net_device *dev, struct sk_buff *skb, |
| struct ib_ah *address, u32 dqpn); |
| /* multicast */ |
| int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, |
| union ib_gid *gid, u16 mlid, |
| int set_qkey, u32 qkey); |
| int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, |
| union ib_gid *gid, u16 mlid); |
| /* timeout */ |
| void (*tx_timeout)(struct net_device *dev, unsigned int txqueue); |
| }; |
| |
| struct rdma_netdev_alloc_params { |
| size_t sizeof_priv; |
| unsigned int txqs; |
| unsigned int rxqs; |
| void *param; |
| |
| int (*initialize_rdma_netdev)(struct ib_device *device, u32 port_num, |
| struct net_device *netdev, void *param); |
| }; |
| |
| struct ib_odp_counters { |
| atomic64_t faults; |
| atomic64_t invalidations; |
| atomic64_t prefetch; |
| }; |
| |
| struct ib_counters { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| /* num of objects attached */ |
| atomic_t usecnt; |
| }; |
| |
| struct ib_counters_read_attr { |
| u64 *counters_buff; |
| u32 ncounters; |
| u32 flags; /* use enum ib_read_counters_flags */ |
| }; |
| |
| struct uverbs_attr_bundle; |
| struct iw_cm_id; |
| struct iw_cm_conn_param; |
| |
| #define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member) \ |
| .size_##ib_struct = \ |
| (sizeof(struct drv_struct) + \ |
| BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) + \ |
| BUILD_BUG_ON_ZERO( \ |
| !__same_type(((struct drv_struct *)NULL)->member, \ |
| struct ib_struct))) |
| |
| #define rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, gfp) \ |
| ((struct ib_type *)rdma_zalloc_obj(ib_dev, ib_dev->ops.size_##ib_type, \ |
| gfp, false)) |
| |
| #define rdma_zalloc_drv_obj_numa(ib_dev, ib_type) \ |
| ((struct ib_type *)rdma_zalloc_obj(ib_dev, ib_dev->ops.size_##ib_type, \ |
| GFP_KERNEL, true)) |
| |
| #define rdma_zalloc_drv_obj(ib_dev, ib_type) \ |
| rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, GFP_KERNEL) |
| |
| #define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct |
| |
| struct rdma_user_mmap_entry { |
| struct kref ref; |
| struct ib_ucontext *ucontext; |
| unsigned long start_pgoff; |
| size_t npages; |
| bool driver_removed; |
| }; |
| |
| /* Return the offset (in bytes) the user should pass to libc's mmap() */ |
| static inline u64 |
| rdma_user_mmap_get_offset(const struct rdma_user_mmap_entry *entry) |
| { |
| return (u64)entry->start_pgoff << PAGE_SHIFT; |
| } |
| |
| /** |
| * struct ib_device_ops - InfiniBand device operations |
| * This structure defines all the InfiniBand device operations, providers will |
| * need to define the supported operations, otherwise they will be set to null. |
| */ |
| struct ib_device_ops { |
| struct module *owner; |
| enum rdma_driver_id driver_id; |
| u32 uverbs_abi_ver; |
| unsigned int uverbs_no_driver_id_binding:1; |
| |
| /* |
| * NOTE: New drivers should not make use of device_group; instead new |
| * device parameter should be exposed via netlink command. This |
| * mechanism exists only for existing drivers. |
| */ |
| const struct attribute_group *device_group; |
| const struct attribute_group **port_groups; |
| |
| int (*post_send)(struct ib_qp *qp, const struct ib_send_wr *send_wr, |
| const struct ib_send_wr **bad_send_wr); |
| int (*post_recv)(struct ib_qp *qp, const struct ib_recv_wr *recv_wr, |
| const struct ib_recv_wr **bad_recv_wr); |
| void (*drain_rq)(struct ib_qp *qp); |
| void (*drain_sq)(struct ib_qp *qp); |
| int (*poll_cq)(struct ib_cq *cq, int num_entries, struct ib_wc *wc); |
| int (*peek_cq)(struct ib_cq *cq, int wc_cnt); |
| int (*req_notify_cq)(struct ib_cq *cq, enum ib_cq_notify_flags flags); |
| int (*post_srq_recv)(struct ib_srq *srq, |
| const struct ib_recv_wr *recv_wr, |
| const struct ib_recv_wr **bad_recv_wr); |
| int (*process_mad)(struct ib_device *device, int process_mad_flags, |
| u32 port_num, const struct ib_wc *in_wc, |
| const struct ib_grh *in_grh, |
| const struct ib_mad *in_mad, struct ib_mad *out_mad, |
| size_t *out_mad_size, u16 *out_mad_pkey_index); |
| int (*query_device)(struct ib_device *device, |
| struct ib_device_attr *device_attr, |
| struct ib_udata *udata); |
| int (*modify_device)(struct ib_device *device, int device_modify_mask, |
| struct ib_device_modify *device_modify); |
| void (*get_dev_fw_str)(struct ib_device *device, char *str); |
| const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev, |
| int comp_vector); |
| int (*query_port)(struct ib_device *device, u32 port_num, |
| struct ib_port_attr *port_attr); |
| int (*modify_port)(struct ib_device *device, u32 port_num, |
| int port_modify_mask, |
| struct ib_port_modify *port_modify); |
| /** |
| * The following mandatory functions are used only at device |
| * registration. Keep functions such as these at the end of this |
| * structure to avoid cache line misses when accessing struct ib_device |
| * in fast paths. |
| */ |
| int (*get_port_immutable)(struct ib_device *device, u32 port_num, |
| struct ib_port_immutable *immutable); |
| enum rdma_link_layer (*get_link_layer)(struct ib_device *device, |
| u32 port_num); |
| /** |
| * When calling get_netdev, the HW vendor's driver should return the |
| * net device of device @device at port @port_num or NULL if such |
| * a net device doesn't exist. The vendor driver should call dev_hold |
| * on this net device. The HW vendor's device driver must guarantee |
| * that this function returns NULL before the net device has finished |
| * NETDEV_UNREGISTER state. |
| */ |
| struct net_device *(*get_netdev)(struct ib_device *device, |
| u32 port_num); |
| /** |
| * rdma netdev operation |
| * |
| * Driver implementing alloc_rdma_netdev or rdma_netdev_get_params |
| * must return -EOPNOTSUPP if it doesn't support the specified type. |
| */ |
| struct net_device *(*alloc_rdma_netdev)( |
| struct ib_device *device, u32 port_num, enum rdma_netdev_t type, |
| const char *name, unsigned char name_assign_type, |
| void (*setup)(struct net_device *)); |
| |
| int (*rdma_netdev_get_params)(struct ib_device *device, u32 port_num, |
| enum rdma_netdev_t type, |
| struct rdma_netdev_alloc_params *params); |
| /** |
| * query_gid should be return GID value for @device, when @port_num |
| * link layer is either IB or iWarp. It is no-op if @port_num port |
| * is RoCE link layer. |
| */ |
| int (*query_gid)(struct ib_device *device, u32 port_num, int index, |
| union ib_gid *gid); |
| /** |
| * When calling add_gid, the HW vendor's driver should add the gid |
| * of device of port at gid index available at @attr. Meta-info of |
| * that gid (for example, the network device related to this gid) is |
| * available at @attr. @context allows the HW vendor driver to store |
| * extra information together with a GID entry. The HW vendor driver may |
| * allocate memory to contain this information and store it in @context |
| * when a new GID entry is written to. Params are consistent until the |
| * next call of add_gid or delete_gid. The function should return 0 on |
| * success or error otherwise. The function could be called |
| * concurrently for different ports. This function is only called when |
| * roce_gid_table is used. |
| */ |
| int (*add_gid)(const struct ib_gid_attr *attr, void **context); |
| /** |
| * When calling del_gid, the HW vendor's driver should delete the |
| * gid of device @device at gid index gid_index of port port_num |
| * available in @attr. |
| * Upon the deletion of a GID entry, the HW vendor must free any |
| * allocated memory. The caller will clear @context afterwards. |
| * This function is only called when roce_gid_table is used. |
| */ |
| int (*del_gid)(const struct ib_gid_attr *attr, void **context); |
| int (*query_pkey)(struct ib_device *device, u32 port_num, u16 index, |
| u16 *pkey); |
| int (*alloc_ucontext)(struct ib_ucontext *context, |
| struct ib_udata *udata); |
| void (*dealloc_ucontext)(struct ib_ucontext *context); |
| int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma); |
| /** |
| * This will be called once refcount of an entry in mmap_xa reaches |
| * zero. The type of the memory that was mapped may differ between |
| * entries and is opaque to the rdma_user_mmap interface. |
| * Therefore needs to be implemented by the driver in mmap_free. |
| */ |
| void (*mmap_free)(struct rdma_user_mmap_entry *entry); |
| void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); |
| int (*alloc_pd)(struct ib_pd *pd, struct ib_udata *udata); |
| int (*dealloc_pd)(struct ib_pd *pd, struct ib_udata *udata); |
| int (*create_ah)(struct ib_ah *ah, struct rdma_ah_init_attr *attr, |
| struct ib_udata *udata); |
| int (*create_user_ah)(struct ib_ah *ah, struct rdma_ah_init_attr *attr, |
| struct ib_udata *udata); |
| int (*modify_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| int (*query_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| int (*destroy_ah)(struct ib_ah *ah, u32 flags); |
| int (*create_srq)(struct ib_srq *srq, |
| struct ib_srq_init_attr *srq_init_attr, |
| struct ib_udata *udata); |
| int (*modify_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr, |
| enum ib_srq_attr_mask srq_attr_mask, |
| struct ib_udata *udata); |
| int (*query_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr); |
| int (*destroy_srq)(struct ib_srq *srq, struct ib_udata *udata); |
| int (*create_qp)(struct ib_qp *qp, struct ib_qp_init_attr *qp_init_attr, |
| struct ib_udata *udata); |
| int (*modify_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, struct ib_udata *udata); |
| int (*query_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr); |
| int (*destroy_qp)(struct ib_qp *qp, struct ib_udata *udata); |
| int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr, |
| struct ib_udata *udata); |
| int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period); |
| int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata); |
| int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata); |
| struct ib_mr *(*get_dma_mr)(struct ib_pd *pd, int mr_access_flags); |
| struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length, |
| u64 virt_addr, int mr_access_flags, |
| struct ib_udata *udata); |
| struct ib_mr *(*reg_user_mr_dmabuf)(struct ib_pd *pd, u64 offset, |
| u64 length, u64 virt_addr, int fd, |
| int mr_access_flags, |
| struct ib_udata *udata); |
| struct ib_mr *(*rereg_user_mr)(struct ib_mr *mr, int flags, u64 start, |
| u64 length, u64 virt_addr, |
| int mr_access_flags, struct ib_pd *pd, |
| struct ib_udata *udata); |
| int (*dereg_mr)(struct ib_mr *mr, struct ib_udata *udata); |
| struct ib_mr *(*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type, |
| u32 max_num_sg); |
| struct ib_mr *(*alloc_mr_integrity)(struct ib_pd *pd, |
| u32 max_num_data_sg, |
| u32 max_num_meta_sg); |
| int (*advise_mr)(struct ib_pd *pd, |
| enum ib_uverbs_advise_mr_advice advice, u32 flags, |
| struct ib_sge *sg_list, u32 num_sge, |
| struct uverbs_attr_bundle *attrs); |
| |
| /* |
| * Kernel users should universally support relaxed ordering (RO), as |
| * they are designed to read data only after observing the CQE and use |
| * the DMA API correctly. |
| * |
| * Some drivers implicitly enable RO if platform supports it. |
| */ |
| int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
| unsigned int *sg_offset); |
| int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, |
| struct ib_mr_status *mr_status); |
| int (*alloc_mw)(struct ib_mw *mw, struct ib_udata *udata); |
| int (*dealloc_mw)(struct ib_mw *mw); |
| int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
| int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
| int (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata); |
| int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata); |
| struct ib_flow *(*create_flow)(struct ib_qp *qp, |
| struct ib_flow_attr *flow_attr, |
| struct ib_udata *udata); |
| int (*destroy_flow)(struct ib_flow *flow_id); |
| int (*destroy_flow_action)(struct ib_flow_action *action); |
| int (*set_vf_link_state)(struct ib_device *device, int vf, u32 port, |
| int state); |
| int (*get_vf_config)(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_info *ivf); |
| int (*get_vf_stats)(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_stats *stats); |
| int (*get_vf_guid)(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_guid *node_guid, |
| struct ifla_vf_guid *port_guid); |
| int (*set_vf_guid)(struct ib_device *device, int vf, u32 port, u64 guid, |
| int type); |
| struct ib_wq *(*create_wq)(struct ib_pd *pd, |
| struct ib_wq_init_attr *init_attr, |
| struct ib_udata *udata); |
| int (*destroy_wq)(struct ib_wq *wq, struct ib_udata *udata); |
| int (*modify_wq)(struct ib_wq *wq, struct ib_wq_attr *attr, |
| u32 wq_attr_mask, struct ib_udata *udata); |
| int (*create_rwq_ind_table)(struct ib_rwq_ind_table *ib_rwq_ind_table, |
| struct ib_rwq_ind_table_init_attr *init_attr, |
| struct ib_udata *udata); |
| int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); |
| struct ib_dm *(*alloc_dm)(struct ib_device *device, |
| struct ib_ucontext *context, |
| struct ib_dm_alloc_attr *attr, |
| struct uverbs_attr_bundle *attrs); |
| int (*dealloc_dm)(struct ib_dm *dm, struct uverbs_attr_bundle *attrs); |
| struct ib_mr *(*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm, |
| struct ib_dm_mr_attr *attr, |
| struct uverbs_attr_bundle *attrs); |
| int (*create_counters)(struct ib_counters *counters, |
| struct uverbs_attr_bundle *attrs); |
| int (*destroy_counters)(struct ib_counters *counters); |
| int (*read_counters)(struct ib_counters *counters, |
| struct ib_counters_read_attr *counters_read_attr, |
| struct uverbs_attr_bundle *attrs); |
| int (*map_mr_sg_pi)(struct ib_mr *mr, struct scatterlist *data_sg, |
| int data_sg_nents, unsigned int *data_sg_offset, |
| struct scatterlist *meta_sg, int meta_sg_nents, |
| unsigned int *meta_sg_offset); |
| |
| /** |
| * alloc_hw_[device,port]_stats - Allocate a struct rdma_hw_stats and |
| * fill in the driver initialized data. The struct is kfree()'ed by |
| * the sysfs core when the device is removed. A lifespan of -1 in the |
| * return struct tells the core to set a default lifespan. |
| */ |
| struct rdma_hw_stats *(*alloc_hw_device_stats)(struct ib_device *device); |
| struct rdma_hw_stats *(*alloc_hw_port_stats)(struct ib_device *device, |
| u32 port_num); |
| /** |
| * get_hw_stats - Fill in the counter value(s) in the stats struct. |
| * @index - The index in the value array we wish to have updated, or |
| * num_counters if we want all stats updated |
| * Return codes - |
| * < 0 - Error, no counters updated |
| * index - Updated the single counter pointed to by index |
| * num_counters - Updated all counters (will reset the timestamp |
| * and prevent further calls for lifespan milliseconds) |
| * Drivers are allowed to update all counters in leiu of just the |
| * one given in index at their option |
| */ |
| int (*get_hw_stats)(struct ib_device *device, |
| struct rdma_hw_stats *stats, u32 port, int index); |
| |
| /** |
| * modify_hw_stat - Modify the counter configuration |
| * @enable: true/false when enable/disable a counter |
| * Return codes - 0 on success or error code otherwise. |
| */ |
| int (*modify_hw_stat)(struct ib_device *device, u32 port, |
| unsigned int counter_index, bool enable); |
| /** |
| * Allows rdma drivers to add their own restrack attributes. |
| */ |
| int (*fill_res_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr); |
| int (*fill_res_mr_entry_raw)(struct sk_buff *msg, struct ib_mr *ibmr); |
| int (*fill_res_cq_entry)(struct sk_buff *msg, struct ib_cq *ibcq); |
| int (*fill_res_cq_entry_raw)(struct sk_buff *msg, struct ib_cq *ibcq); |
| int (*fill_res_qp_entry)(struct sk_buff *msg, struct ib_qp *ibqp); |
| int (*fill_res_qp_entry_raw)(struct sk_buff *msg, struct ib_qp *ibqp); |
| int (*fill_res_cm_id_entry)(struct sk_buff *msg, struct rdma_cm_id *id); |
| |
| /* Device lifecycle callbacks */ |
| /* |
| * Called after the device becomes registered, before clients are |
| * attached |
| */ |
| int (*enable_driver)(struct ib_device *dev); |
| /* |
| * This is called as part of ib_dealloc_device(). |
| */ |
| void (*dealloc_driver)(struct ib_device *dev); |
| |
| /* iWarp CM callbacks */ |
| void (*iw_add_ref)(struct ib_qp *qp); |
| void (*iw_rem_ref)(struct ib_qp *qp); |
| struct ib_qp *(*iw_get_qp)(struct ib_device *device, int qpn); |
| int (*iw_connect)(struct iw_cm_id *cm_id, |
| struct iw_cm_conn_param *conn_param); |
| int (*iw_accept)(struct iw_cm_id *cm_id, |
| struct iw_cm_conn_param *conn_param); |
| int (*iw_reject)(struct iw_cm_id *cm_id, const void *pdata, |
| u8 pdata_len); |
| int (*iw_create_listen)(struct iw_cm_id *cm_id, int backlog); |
| int (*iw_destroy_listen)(struct iw_cm_id *cm_id); |
| /** |
| * counter_bind_qp - Bind a QP to a counter. |
| * @counter - The counter to be bound. If counter->id is zero then |
| * the driver needs to allocate a new counter and set counter->id |
| */ |
| int (*counter_bind_qp)(struct rdma_counter *counter, struct ib_qp *qp); |
| /** |
| * counter_unbind_qp - Unbind the qp from the dynamically-allocated |
| * counter and bind it onto the default one |
| */ |
| int (*counter_unbind_qp)(struct ib_qp *qp); |
| /** |
| * counter_dealloc -De-allocate the hw counter |
| */ |
| int (*counter_dealloc)(struct rdma_counter *counter); |
| /** |
| * counter_alloc_stats - Allocate a struct rdma_hw_stats and fill in |
| * the driver initialized data. |
| */ |
| struct rdma_hw_stats *(*counter_alloc_stats)( |
| struct rdma_counter *counter); |
| /** |
| * counter_update_stats - Query the stats value of this counter |
| */ |
| int (*counter_update_stats)(struct rdma_counter *counter); |
| |
| /** |
| * Allows rdma drivers to add their own restrack attributes |
| * dumped via 'rdma stat' iproute2 command. |
| */ |
| int (*fill_stat_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr); |
| |
| /* query driver for its ucontext properties */ |
| int (*query_ucontext)(struct ib_ucontext *context, |
| struct uverbs_attr_bundle *attrs); |
| |
| /* |
| * Provide NUMA node. This API exists for rdmavt/hfi1 only. |
| * Everyone else relies on Linux memory management model. |
| */ |
| int (*get_numa_node)(struct ib_device *dev); |
| |
| DECLARE_RDMA_OBJ_SIZE(ib_ah); |
| DECLARE_RDMA_OBJ_SIZE(ib_counters); |
| DECLARE_RDMA_OBJ_SIZE(ib_cq); |
| DECLARE_RDMA_OBJ_SIZE(ib_mw); |
| DECLARE_RDMA_OBJ_SIZE(ib_pd); |
| DECLARE_RDMA_OBJ_SIZE(ib_qp); |
| DECLARE_RDMA_OBJ_SIZE(ib_rwq_ind_table); |
| DECLARE_RDMA_OBJ_SIZE(ib_srq); |
| DECLARE_RDMA_OBJ_SIZE(ib_ucontext); |
| DECLARE_RDMA_OBJ_SIZE(ib_xrcd); |
| }; |
| |
| struct ib_core_device { |
| /* device must be the first element in structure until, |
| * union of ib_core_device and device exists in ib_device. |
| */ |
| struct device dev; |
| possible_net_t rdma_net; |
| struct kobject *ports_kobj; |
| struct list_head port_list; |
| struct ib_device *owner; /* reach back to owner ib_device */ |
| }; |
| |
| struct rdma_restrack_root; |
| struct ib_device { |
| /* Do not access @dma_device directly from ULP nor from HW drivers. */ |
| struct device *dma_device; |
| struct ib_device_ops ops; |
| char name[IB_DEVICE_NAME_MAX]; |
| struct rcu_head rcu_head; |
| |
| struct list_head event_handler_list; |
| /* Protects event_handler_list */ |
| struct rw_semaphore event_handler_rwsem; |
| |
| /* Protects QP's event_handler calls and open_qp list */ |
| spinlock_t qp_open_list_lock; |
| |
| struct rw_semaphore client_data_rwsem; |
| struct xarray client_data; |
| struct mutex unregistration_lock; |
| |
| /* Synchronize GID, Pkey cache entries, subnet prefix, LMC */ |
| rwlock_t cache_lock; |
| /** |
| * port_data is indexed by port number |
| */ |
| struct ib_port_data *port_data; |
| |
| int num_comp_vectors; |
| |
| union { |
| struct device dev; |
| struct ib_core_device coredev; |
| }; |
| |
| /* First group is for device attributes, |
| * Second group is for driver provided attributes (optional). |
| * Third group is for the hw_stats |
| * It is a NULL terminated array. |
| */ |
| const struct attribute_group *groups[4]; |
| |
| u64 uverbs_cmd_mask; |
| |
| char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
| __be64 node_guid; |
| u32 local_dma_lkey; |
| u16 is_switch:1; |
| /* Indicates kernel verbs support, should not be used in drivers */ |
| u16 kverbs_provider:1; |
| /* CQ adaptive moderation (RDMA DIM) */ |
| u16 use_cq_dim:1; |
| u8 node_type; |
| u32 phys_port_cnt; |
| struct ib_device_attr attrs; |
| struct hw_stats_device_data *hw_stats_data; |
| |
| #ifdef CONFIG_CGROUP_RDMA |
| struct rdmacg_device cg_device; |
| #endif |
| |
| u32 index; |
| |
| spinlock_t cq_pools_lock; |
| struct list_head cq_pools[IB_POLL_LAST_POOL_TYPE + 1]; |
| |
| struct rdma_restrack_root *res; |
| |
| const struct uapi_definition *driver_def; |
| |
| /* |
| * Positive refcount indicates that the device is currently |
| * registered and cannot be unregistered. |
| */ |
| refcount_t refcount; |
| struct completion unreg_completion; |
| struct work_struct unregistration_work; |
| |
| const struct rdma_link_ops *link_ops; |
| |
| /* Protects compat_devs xarray modifications */ |
| struct mutex compat_devs_mutex; |
| /* Maintains compat devices for each net namespace */ |
| struct xarray compat_devs; |
| |
| /* Used by iWarp CM */ |
| char iw_ifname[IFNAMSIZ]; |
| u32 iw_driver_flags; |
| u32 lag_flags; |
| }; |
| |
| static inline void *rdma_zalloc_obj(struct ib_device *dev, size_t size, |
| gfp_t gfp, bool is_numa_aware) |
| { |
| if (is_numa_aware && dev->ops.get_numa_node) |
| return kzalloc_node(size, gfp, dev->ops.get_numa_node(dev)); |
| |
| return kzalloc(size, gfp); |
| } |
| |
| struct ib_client_nl_info; |
| struct ib_client { |
| const char *name; |
| int (*add)(struct ib_device *ibdev); |
| void (*remove)(struct ib_device *, void *client_data); |
| void (*rename)(struct ib_device *dev, void *client_data); |
| int (*get_nl_info)(struct ib_device *ibdev, void *client_data, |
| struct ib_client_nl_info *res); |
| int (*get_global_nl_info)(struct ib_client_nl_info *res); |
| |
| /* Returns the net_dev belonging to this ib_client and matching the |
| * given parameters. |
| * @dev: An RDMA device that the net_dev use for communication. |
| * @port: A physical port number on the RDMA device. |
| * @pkey: P_Key that the net_dev uses if applicable. |
| * @gid: A GID that the net_dev uses to communicate. |
| * @addr: An IP address the net_dev is configured with. |
| * @client_data: The device's client data set by ib_set_client_data(). |
| * |
| * An ib_client that implements a net_dev on top of RDMA devices |
| * (such as IP over IB) should implement this callback, allowing the |
| * rdma_cm module to find the right net_dev for a given request. |
| * |
| * The caller is responsible for calling dev_put on the returned |
| * netdev. */ |
| struct net_device *(*get_net_dev_by_params)( |
| struct ib_device *dev, |
| u32 port, |
| u16 pkey, |
| const union ib_gid *gid, |
| const struct sockaddr *addr, |
| void *client_data); |
| |
| refcount_t uses; |
| struct completion uses_zero; |
| u32 client_id; |
| |
| /* kverbs are not required by the client */ |
| u8 no_kverbs_req:1; |
| }; |
| |
| /* |
| * IB block DMA iterator |
| * |
| * Iterates the DMA-mapped SGL in contiguous memory blocks aligned |
| * to a HW supported page size. |
| */ |
| struct ib_block_iter { |
| /* internal states */ |
| struct scatterlist *__sg; /* sg holding the current aligned block */ |
| dma_addr_t __dma_addr; /* unaligned DMA address of this block */ |
| unsigned int __sg_nents; /* number of SG entries */ |
| unsigned int __sg_advance; /* number of bytes to advance in sg in next step */ |
| unsigned int __pg_bit; /* alignment of current block */ |
| }; |
| |
| struct ib_device *_ib_alloc_device(size_t size); |
| #define ib_alloc_device(drv_struct, member) \ |
| container_of(_ib_alloc_device(sizeof(struct drv_struct) + \ |
| BUILD_BUG_ON_ZERO(offsetof( \ |
| struct drv_struct, member))), \ |
| struct drv_struct, member) |
| |
| void ib_dealloc_device(struct ib_device *device); |
| |
| void ib_get_device_fw_str(struct ib_device *device, char *str); |
| |
| int ib_register_device(struct ib_device *device, const char *name, |
| struct device *dma_device); |
| void ib_unregister_device(struct ib_device *device); |
| void ib_unregister_driver(enum rdma_driver_id driver_id); |
| void ib_unregister_device_and_put(struct ib_device *device); |
| void ib_unregister_device_queued(struct ib_device *ib_dev); |
| |
| int ib_register_client (struct ib_client *client); |
| void ib_unregister_client(struct ib_client *client); |
| |
| void __rdma_block_iter_start(struct ib_block_iter *biter, |
| struct scatterlist *sglist, |
| unsigned int nents, |
| unsigned long pgsz); |
| bool __rdma_block_iter_next(struct ib_block_iter *biter); |
| |
| /** |
| * rdma_block_iter_dma_address - get the aligned dma address of the current |
| * block held by the block iterator. |
| * @biter: block iterator holding the memory block |
| */ |
| static inline dma_addr_t |
| rdma_block_iter_dma_address(struct ib_block_iter *biter) |
| { |
| return biter->__dma_addr & ~(BIT_ULL(biter->__pg_bit) - 1); |
| } |
| |
| /** |
| * rdma_for_each_block - iterate over contiguous memory blocks of the sg list |
| * @sglist: sglist to iterate over |
| * @biter: block iterator holding the memory block |
| * @nents: maximum number of sg entries to iterate over |
| * @pgsz: best HW supported page size to use |
| * |
| * Callers may use rdma_block_iter_dma_address() to get each |
| * blocks aligned DMA address. |
| */ |
| #define rdma_for_each_block(sglist, biter, nents, pgsz) \ |
| for (__rdma_block_iter_start(biter, sglist, nents, \ |
| pgsz); \ |
| __rdma_block_iter_next(biter);) |
| |
| /** |
| * ib_get_client_data - Get IB client context |
| * @device:Device to get context for |
| * @client:Client to get context for |
| * |
| * ib_get_client_data() returns the client context data set with |
| * ib_set_client_data(). This can only be called while the client is |
| * registered to the device, once the ib_client remove() callback returns this |
| * cannot be called. |
| */ |
| static inline void *ib_get_client_data(struct ib_device *device, |
| struct ib_client *client) |
| { |
| return xa_load(&device->client_data, client->client_id); |
| } |
| void ib_set_client_data(struct ib_device *device, struct ib_client *client, |
| void *data); |
| void ib_set_device_ops(struct ib_device *device, |
| const struct ib_device_ops *ops); |
| |
| int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma, |
| unsigned long pfn, unsigned long size, pgprot_t prot, |
| struct rdma_user_mmap_entry *entry); |
| int rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext, |
| struct rdma_user_mmap_entry *entry, |
| size_t length); |
| int rdma_user_mmap_entry_insert_range(struct ib_ucontext *ucontext, |
| struct rdma_user_mmap_entry *entry, |
| size_t length, u32 min_pgoff, |
| u32 max_pgoff); |
| |
| static inline int |
| rdma_user_mmap_entry_insert_exact(struct ib_ucontext *ucontext, |
| struct rdma_user_mmap_entry *entry, |
| size_t length, u32 pgoff) |
| { |
| return rdma_user_mmap_entry_insert_range(ucontext, entry, length, pgoff, |
| pgoff); |
| } |
| |
| struct rdma_user_mmap_entry * |
| rdma_user_mmap_entry_get_pgoff(struct ib_ucontext *ucontext, |
| unsigned long pgoff); |
| struct rdma_user_mmap_entry * |
| rdma_user_mmap_entry_get(struct ib_ucontext *ucontext, |
| struct vm_area_struct *vma); |
| void rdma_user_mmap_entry_put(struct rdma_user_mmap_entry *entry); |
| |
| void rdma_user_mmap_entry_remove(struct rdma_user_mmap_entry *entry); |
| |
| static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |
| { |
| return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; |
| } |
| |
| static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) |
| { |
| return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; |
| } |
| |
| static inline bool ib_is_buffer_cleared(const void __user *p, |
| size_t len) |
| { |
| bool ret; |
| u8 *buf; |
| |
| if (len > USHRT_MAX) |
| return false; |
| |
| buf = memdup_user(p, len); |
| if (IS_ERR(buf)) |
| return false; |
| |
| ret = !memchr_inv(buf, 0, len); |
| kfree(buf); |
| return ret; |
| } |
| |
| static inline bool ib_is_udata_cleared(struct ib_udata *udata, |
| size_t offset, |
| size_t len) |
| { |
| return ib_is_buffer_cleared(udata->inbuf + offset, len); |
| } |
| |
| /** |
| * ib_modify_qp_is_ok - Check that the supplied attribute mask |
| * contains all required attributes and no attributes not allowed for |
| * the given QP state transition. |
| * @cur_state: Current QP state |
| * @next_state: Next QP state |
| * @type: QP type |
| * @mask: Mask of supplied QP attributes |
| * |
| * This function is a helper function that a low-level driver's |
| * modify_qp method can use to validate the consumer's input. It |
| * checks that cur_state and next_state are valid QP states, that a |
| * transition from cur_state to next_state is allowed by the IB spec, |
| * and that the attribute mask supplied is allowed for the transition. |
| */ |
| bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
| enum ib_qp_type type, enum ib_qp_attr_mask mask); |
| |
| void ib_register_event_handler(struct ib_event_handler *event_handler); |
| void ib_unregister_event_handler(struct ib_event_handler *event_handler); |
| void ib_dispatch_event(const struct ib_event *event); |
| |
| int ib_query_port(struct ib_device *device, |
| u32 port_num, struct ib_port_attr *port_attr); |
| |
| enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, |
| u32 port_num); |
| |
| /** |
| * rdma_cap_ib_switch - Check if the device is IB switch |
| * @device: Device to check |
| * |
| * Device driver is responsible for setting is_switch bit on |
| * in ib_device structure at init time. |
| * |
| * Return: true if the device is IB switch. |
| */ |
| static inline bool rdma_cap_ib_switch(const struct ib_device *device) |
| { |
| return device->is_switch; |
| } |
| |
| /** |
| * rdma_start_port - Return the first valid port number for the device |
| * specified |
| * |
| * @device: Device to be checked |
| * |
| * Return start port number |
| */ |
| static inline u32 rdma_start_port(const struct ib_device *device) |
| { |
| return rdma_cap_ib_switch(device) ? 0 : 1; |
| } |
| |
| /** |
| * rdma_for_each_port - Iterate over all valid port numbers of the IB device |
| * @device - The struct ib_device * to iterate over |
| * @iter - The unsigned int to store the port number |
| */ |
| #define rdma_for_each_port(device, iter) \ |
| for (iter = rdma_start_port(device + \ |
| BUILD_BUG_ON_ZERO(!__same_type(u32, \ |
| iter))); \ |
| iter <= rdma_end_port(device); iter++) |
| |
| /** |
| * rdma_end_port - Return the last valid port number for the device |
| * specified |
| * |
| * @device: Device to be checked |
| * |
| * Return last port number |
| */ |
| static inline u32 rdma_end_port(const struct ib_device *device) |
| { |
| return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; |
| } |
| |
| static inline int rdma_is_port_valid(const struct ib_device *device, |
| unsigned int port) |
| { |
| return (port >= rdma_start_port(device) && |
| port <= rdma_end_port(device)); |
| } |
| |
| static inline bool rdma_is_grh_required(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_PORT_IB_GRH_REQUIRED; |
| } |
| |
| static inline bool rdma_protocol_ib(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_IB; |
| } |
| |
| static inline bool rdma_protocol_roce(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP); |
| } |
| |
| static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; |
| } |
| |
| static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_ROCE; |
| } |
| |
| static inline bool rdma_protocol_iwarp(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_IWARP; |
| } |
| |
| static inline bool rdma_ib_or_roce(const struct ib_device *device, |
| u32 port_num) |
| { |
| return rdma_protocol_ib(device, port_num) || |
| rdma_protocol_roce(device, port_num); |
| } |
| |
| static inline bool rdma_protocol_raw_packet(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_RAW_PACKET; |
| } |
| |
| static inline bool rdma_protocol_usnic(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_PROT_USNIC; |
| } |
| |
| /** |
| * rdma_cap_ib_mad - Check if the port of a device supports Infiniband |
| * Management Datagrams. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Management Datagrams (MAD) are a required part of the InfiniBand |
| * specification and are supported on all InfiniBand devices. A slightly |
| * extended version are also supported on OPA interfaces. |
| * |
| * Return: true if the port supports sending/receiving of MAD packets. |
| */ |
| static inline bool rdma_cap_ib_mad(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_IB_MAD; |
| } |
| |
| /** |
| * rdma_cap_opa_mad - Check if the port of device provides support for OPA |
| * Management Datagrams. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Intel OmniPath devices extend and/or replace the InfiniBand Management |
| * datagrams with their own versions. These OPA MADs share many but not all of |
| * the characteristics of InfiniBand MADs. |
| * |
| * OPA MADs differ in the following ways: |
| * |
| * 1) MADs are variable size up to 2K |
| * IBTA defined MADs remain fixed at 256 bytes |
| * 2) OPA SMPs must carry valid PKeys |
| * 3) OPA SMP packets are a different format |
| * |
| * Return: true if the port supports OPA MAD packet formats. |
| */ |
| static inline bool rdma_cap_opa_mad(struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_OPA_MAD; |
| } |
| |
| /** |
| * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband |
| * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI). |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Each InfiniBand node is required to provide a Subnet Management Agent |
| * that the subnet manager can access. Prior to the fabric being fully |
| * configured by the subnet manager, the SMA is accessed via a well known |
| * interface called the Subnet Management Interface (SMI). This interface |
| * uses directed route packets to communicate with the SM to get around the |
| * chicken and egg problem of the SM needing to know what's on the fabric |
| * in order to configure the fabric, and needing to configure the fabric in |
| * order to send packets to the devices on the fabric. These directed |
| * route packets do not need the fabric fully configured in order to reach |
| * their destination. The SMI is the only method allowed to send |
| * directed route packets on an InfiniBand fabric. |
| * |
| * Return: true if the port provides an SMI. |
| */ |
| static inline bool rdma_cap_ib_smi(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_IB_SMI; |
| } |
| |
| /** |
| * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband |
| * Communication Manager. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * The InfiniBand Communication Manager is one of many pre-defined General |
| * Service Agents (GSA) that are accessed via the General Service |
| * Interface (GSI). It's role is to facilitate establishment of connections |
| * between nodes as well as other management related tasks for established |
| * connections. |
| * |
| * Return: true if the port supports an IB CM (this does not guarantee that |
| * a CM is actually running however). |
| */ |
| static inline bool rdma_cap_ib_cm(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_IB_CM; |
| } |
| |
| /** |
| * rdma_cap_iw_cm - Check if the port of device has the capability IWARP |
| * Communication Manager. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Similar to above, but specific to iWARP connections which have a different |
| * managment protocol than InfiniBand. |
| * |
| * Return: true if the port supports an iWARP CM (this does not guarantee that |
| * a CM is actually running however). |
| */ |
| static inline bool rdma_cap_iw_cm(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_IW_CM; |
| } |
| |
| /** |
| * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband |
| * Subnet Administration. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * An InfiniBand Subnet Administration (SA) service is a pre-defined General |
| * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand |
| * fabrics, devices should resolve routes to other hosts by contacting the |
| * SA to query the proper route. |
| * |
| * Return: true if the port should act as a client to the fabric Subnet |
| * Administration interface. This does not imply that the SA service is |
| * running locally. |
| */ |
| static inline bool rdma_cap_ib_sa(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_IB_SA; |
| } |
| |
| /** |
| * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband |
| * Multicast. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * InfiniBand multicast registration is more complex than normal IPv4 or |
| * IPv6 multicast registration. Each Host Channel Adapter must register |
| * with the Subnet Manager when it wishes to join a multicast group. It |
| * should do so only once regardless of how many queue pairs it subscribes |
| * to this group. And it should leave the group only after all queue pairs |
| * attached to the group have been detached. |
| * |
| * Return: true if the port must undertake the additional adminstrative |
| * overhead of registering/unregistering with the SM and tracking of the |
| * total number of queue pairs attached to the multicast group. |
| */ |
| static inline bool rdma_cap_ib_mcast(const struct ib_device *device, |
| u32 port_num) |
| { |
| return rdma_cap_ib_sa(device, port_num); |
| } |
| |
| /** |
| * rdma_cap_af_ib - Check if the port of device has the capability |
| * Native Infiniband Address. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default |
| * GID. RoCE uses a different mechanism, but still generates a GID via |
| * a prescribed mechanism and port specific data. |
| * |
| * Return: true if the port uses a GID address to identify devices on the |
| * network. |
| */ |
| static inline bool rdma_cap_af_ib(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_AF_IB; |
| } |
| |
| /** |
| * rdma_cap_eth_ah - Check if the port of device has the capability |
| * Ethernet Address Handle. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * RoCE is InfiniBand over Ethernet, and it uses a well defined technique |
| * to fabricate GIDs over Ethernet/IP specific addresses native to the |
| * port. Normally, packet headers are generated by the sending host |
| * adapter, but when sending connectionless datagrams, we must manually |
| * inject the proper headers for the fabric we are communicating over. |
| * |
| * Return: true if we are running as a RoCE port and must force the |
| * addition of a Global Route Header built from our Ethernet Address |
| * Handle into our header list for connectionless packets. |
| */ |
| static inline bool rdma_cap_eth_ah(const struct ib_device *device, u32 port_num) |
| { |
| return device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_ETH_AH; |
| } |
| |
| /** |
| * rdma_cap_opa_ah - Check if the port of device supports |
| * OPA Address handles |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Return: true if we are running on an OPA device which supports |
| * the extended OPA addressing. |
| */ |
| static inline bool rdma_cap_opa_ah(struct ib_device *device, u32 port_num) |
| { |
| return (device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH; |
| } |
| |
| /** |
| * rdma_max_mad_size - Return the max MAD size required by this RDMA Port. |
| * |
| * @device: Device |
| * @port_num: Port number |
| * |
| * This MAD size includes the MAD headers and MAD payload. No other headers |
| * are included. |
| * |
| * Return the max MAD size required by the Port. Will return 0 if the port |
| * does not support MADs |
| */ |
| static inline size_t rdma_max_mad_size(const struct ib_device *device, |
| u32 port_num) |
| { |
| return device->port_data[port_num].immutable.max_mad_size; |
| } |
| |
| /** |
| * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * RoCE GID table mechanism manages the various GIDs for a device. |
| * |
| * NOTE: if allocating the port's GID table has failed, this call will still |
| * return true, but any RoCE GID table API will fail. |
| * |
| * Return: true if the port uses RoCE GID table mechanism in order to manage |
| * its GIDs. |
| */ |
| static inline bool rdma_cap_roce_gid_table(const struct ib_device *device, |
| u32 port_num) |
| { |
| return rdma_protocol_roce(device, port_num) && |
| device->ops.add_gid && device->ops.del_gid; |
| } |
| |
| /* |
| * Check if the device supports READ W/ INVALIDATE. |
| */ |
| static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) |
| { |
| /* |
| * iWarp drivers must support READ W/ INVALIDATE. No other protocol |
| * has support for it yet. |
| */ |
| return rdma_protocol_iwarp(dev, port_num); |
| } |
| |
| /** |
| * rdma_core_cap_opa_port - Return whether the RDMA Port is OPA or not. |
| * @device: Device |
| * @port_num: 1 based Port number |
| * |
| * Return true if port is an Intel OPA port , false if not |
| */ |
| static inline bool rdma_core_cap_opa_port(struct ib_device *device, |
| u32 port_num) |
| { |
| return (device->port_data[port_num].immutable.core_cap_flags & |
| RDMA_CORE_PORT_INTEL_OPA) == RDMA_CORE_PORT_INTEL_OPA; |
| } |
| |
| /** |
| * rdma_mtu_enum_to_int - Return the mtu of the port as an integer value. |
| * @device: Device |
| * @port_num: Port number |
| * @mtu: enum value of MTU |
| * |
| * Return the MTU size supported by the port as an integer value. Will return |
| * -1 if enum value of mtu is not supported. |
| */ |
| static inline int rdma_mtu_enum_to_int(struct ib_device *device, u32 port, |
| int mtu) |
| { |
| if (rdma_core_cap_opa_port(device, port)) |
| return opa_mtu_enum_to_int((enum opa_mtu)mtu); |
| else |
| return ib_mtu_enum_to_int((enum ib_mtu)mtu); |
| } |
| |
| /** |
| * rdma_mtu_from_attr - Return the mtu of the port from the port attribute. |
| * @device: Device |
| * @port_num: Port number |
| * @attr: port attribute |
| * |
| * Return the MTU size supported by the port as an integer value. |
| */ |
| static inline int rdma_mtu_from_attr(struct ib_device *device, u32 port, |
| struct ib_port_attr *attr) |
| { |
| if (rdma_core_cap_opa_port(device, port)) |
| return attr->phys_mtu; |
| else |
| return ib_mtu_enum_to_int(attr->max_mtu); |
| } |
| |
| int ib_set_vf_link_state(struct ib_device *device, int vf, u32 port, |
| int state); |
| int ib_get_vf_config(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_info *info); |
| int ib_get_vf_stats(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_stats *stats); |
| int ib_get_vf_guid(struct ib_device *device, int vf, u32 port, |
| struct ifla_vf_guid *node_guid, |
| struct ifla_vf_guid *port_guid); |
| int ib_set_vf_guid(struct ib_device *device, int vf, u32 port, u64 guid, |
| int type); |
| |
| int ib_query_pkey(struct ib_device *device, |
| u32 port_num, u16 index, u16 *pkey); |
| |
| int ib_modify_device(struct ib_device *device, |
| int device_modify_mask, |
| struct ib_device_modify *device_modify); |
| |
| int ib_modify_port(struct ib_device *device, |
| u32 port_num, int port_modify_mask, |
| struct ib_port_modify *port_modify); |
| |
| int ib_find_gid(struct ib_device *device, union ib_gid *gid, |
| u32 *port_num, u16 *index); |
| |
| int ib_find_pkey(struct ib_device *device, |
| u32 port_num, u16 pkey, u16 *index); |
| |
| enum ib_pd_flags { |
| /* |
| * Create a memory registration for all memory in the system and place |
| * the rkey for it into pd->unsafe_global_rkey. This can be used by |
| * ULPs to avoid the overhead of dynamic MRs. |
| * |
| * This flag is generally considered unsafe and must only be used in |
| * extremly trusted environments. Every use of it will log a warning |
| * in the kernel log. |
| */ |
| IB_PD_UNSAFE_GLOBAL_RKEY = 0x01, |
| }; |
| |
| struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, |
| const char *caller); |
| |
| /** |
| * ib_alloc_pd - Allocates an unused protection domain. |
| * @device: The device on which to allocate the protection domain. |
| * @flags: protection domain flags |
| * |
| * A protection domain object provides an association between QPs, shared |
| * receive queues, address handles, memory regions, and memory windows. |
| * |
| * Every PD has a local_dma_lkey which can be used as the lkey value for local |
| * memory operations. |
| */ |
| #define ib_alloc_pd(device, flags) \ |
| __ib_alloc_pd((device), (flags), KBUILD_MODNAME) |
| |
| int ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata); |
| |
| /** |
| * ib_dealloc_pd - Deallocate kernel PD |
| * @pd: The protection domain |
| * |
| * NOTE: for user PD use ib_dealloc_pd_user with valid udata! |
| */ |
| static inline void ib_dealloc_pd(struct ib_pd *pd) |
| { |
| int ret = ib_dealloc_pd_user(pd, NULL); |
| |
| WARN_ONCE(ret, "Destroy of kernel PD shouldn't fail"); |
| } |
| |
| enum rdma_create_ah_flags { |
| /* In a sleepable context */ |
| RDMA_CREATE_AH_SLEEPABLE = BIT(0), |
| }; |
| |
| /** |
| * rdma_create_ah - Creates an address handle for the given address vector. |
| * @pd: The protection domain associated with the address handle. |
| * @ah_attr: The attributes of the address vector. |
| * @flags: Create address handle flags (see enum rdma_create_ah_flags). |
| * |
| * The address handle is used to reference a local or global destination |
| * in all UD QP post sends. |
| */ |
| struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, |
| u32 flags); |
| |
| /** |
| * rdma_create_user_ah - Creates an address handle for the given address vector. |
| * It resolves destination mac address for ah attribute of RoCE type. |
| * @pd: The protection domain associated with the address handle. |
| * @ah_attr: The attributes of the address vector. |
| * @udata: pointer to user's input output buffer information need by |
| * provider driver. |
| * |
| * It returns 0 on success and returns appropriate error code on error. |
| * The address handle is used to reference a local or global destination |
| * in all UD QP post sends. |
| */ |
| struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, |
| struct rdma_ah_attr *ah_attr, |
| struct ib_udata *udata); |
| /** |
| * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header |
| * work completion. |
| * @hdr: the L3 header to parse |
| * @net_type: type of header to parse |
| * @sgid: place to store source gid |
| * @dgid: place to store destination gid |
| */ |
| int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, |
| enum rdma_network_type net_type, |
| union ib_gid *sgid, union ib_gid *dgid); |
| |
| /** |
| * ib_get_rdma_header_version - Get the header version |
| * @hdr: the L3 header to parse |
| */ |
| int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); |
| |
| /** |
| * ib_init_ah_attr_from_wc - Initializes address handle attributes from a |
| * work completion. |
| * @device: Device on which the received message arrived. |
| * @port_num: Port on which the received message arrived. |
| * @wc: Work completion associated with the received message. |
| * @grh: References the received global route header. This parameter is |
| * ignored unless the work completion indicates that the GRH is valid. |
| * @ah_attr: Returned attributes that can be used when creating an address |
| * handle for replying to the message. |
| * When ib_init_ah_attr_from_wc() returns success, |
| * (a) for IB link layer it optionally contains a reference to SGID attribute |
| * when GRH is present for IB link layer. |
| * (b) for RoCE link layer it contains a reference to SGID attribute. |
| * User must invoke rdma_cleanup_ah_attr_gid_attr() to release reference to SGID |
| * attributes which are initialized using ib_init_ah_attr_from_wc(). |
| * |
| */ |
| int ib_init_ah_attr_from_wc(struct ib_device *device, u32 port_num, |
| const struct ib_wc *wc, const struct ib_grh *grh, |
| struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * ib_create_ah_from_wc - Creates an address handle associated with the |
| * sender of the specified work completion. |
| * @pd: The protection domain associated with the address handle. |
| * @wc: Work completion information associated with a received message. |
| * @grh: References the received global route header. This parameter is |
| * ignored unless the work completion indicates that the GRH is valid. |
| * @port_num: The outbound port number to associate with the address. |
| * |
| * The address handle is used to reference a local or global destination |
| * in all UD QP post sends. |
| */ |
| struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, |
| const struct ib_grh *grh, u32 port_num); |
| |
| /** |
| * rdma_modify_ah - Modifies the address vector associated with an address |
| * handle. |
| * @ah: The address handle to modify. |
| * @ah_attr: The new address vector attributes to associate with the |
| * address handle. |
| */ |
| int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * rdma_query_ah - Queries the address vector associated with an address |
| * handle. |
| * @ah: The address handle to query. |
| * @ah_attr: The address vector attributes associated with the address |
| * handle. |
| */ |
| int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| |
| enum rdma_destroy_ah_flags { |
| /* In a sleepable context */ |
| RDMA_DESTROY_AH_SLEEPABLE = BIT(0), |
| }; |
| |
| /** |
| * rdma_destroy_ah_user - Destroys an address handle. |
| * @ah: The address handle to destroy. |
| * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags). |
| * @udata: Valid user data or NULL for kernel objects |
| */ |
| int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata); |
| |
| /** |
| * rdma_destroy_ah - Destroys an kernel address handle. |
| * @ah: The address handle to destroy. |
| * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags). |
| * |
| * NOTE: for user ah use rdma_destroy_ah_user with valid udata! |
| */ |
| static inline void rdma_destroy_ah(struct ib_ah *ah, u32 flags) |
| { |
| int ret = rdma_destroy_ah_user(ah, flags, NULL); |
| |
| WARN_ONCE(ret, "Destroy of kernel AH shouldn't fail"); |
| } |
| |
| struct ib_srq *ib_create_srq_user(struct ib_pd *pd, |
| struct ib_srq_init_attr *srq_init_attr, |
| struct ib_usrq_object *uobject, |
| struct ib_udata *udata); |
| static inline struct ib_srq * |
| ib_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *srq_init_attr) |
| { |
| if (!pd->device->ops.create_srq) |
| return ERR_PTR(-EOPNOTSUPP); |
| |
| return ib_create_srq_user(pd, srq_init_attr, NULL, NULL); |
| } |
| |
| /** |
| * ib_modify_srq - Modifies the attributes for the specified SRQ. |
| * @srq: The SRQ to modify. |
| * @srq_attr: On input, specifies the SRQ attributes to modify. On output, |
| * the current values of selected SRQ attributes are returned. |
| * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ |
| * are being modified. |
| * |
| * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or |
| * IB_SRQ_LIMIT to set the SRQ's limit and request notification when |
| * the number of receives queued drops below the limit. |
| */ |
| int ib_modify_srq(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr, |
| enum ib_srq_attr_mask srq_attr_mask); |
| |
| /** |
| * ib_query_srq - Returns the attribute list and current values for the |
| * specified SRQ. |
| * @srq: The SRQ to query. |
| * @srq_attr: The attributes of the specified SRQ. |
| */ |
| int ib_query_srq(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr); |
| |
| /** |
| * ib_destroy_srq_user - Destroys the specified SRQ. |
| * @srq: The SRQ to destroy. |
| * @udata: Valid user data or NULL for kernel objects |
| */ |
| int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata); |
| |
| /** |
| * ib_destroy_srq - Destroys the specified kernel SRQ. |
| * @srq: The SRQ to destroy. |
| * |
| * NOTE: for user srq use ib_destroy_srq_user with valid udata! |
| */ |
| static inline void ib_destroy_srq(struct ib_srq *srq) |
| { |
| int ret = ib_destroy_srq_user(srq, NULL); |
| |
| WARN_ONCE(ret, "Destroy of kernel SRQ shouldn't fail"); |
| } |
| |
| /** |
| * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. |
| * @srq: The SRQ to post the work request on. |
| * @recv_wr: A list of work requests to post on the receive queue. |
| * @bad_recv_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| */ |
| static inline int ib_post_srq_recv(struct ib_srq *srq, |
| const struct ib_recv_wr *recv_wr, |
| const struct ib_recv_wr **bad_recv_wr) |
| { |
| const struct ib_recv_wr *dummy; |
| |
| return srq->device->ops.post_srq_recv(srq, recv_wr, |
| bad_recv_wr ? : &dummy); |
| } |
| |
| struct ib_qp *ib_create_qp_kernel(struct ib_pd *pd, |
| struct ib_qp_init_attr *qp_init_attr, |
| const char *caller); |
| /** |
| * ib_create_qp - Creates a kernel QP associated with the specific protection |
| * domain. |
| * @pd: The protection domain associated with the QP. |
| * @init_attr: A list of initial attributes required to create the |
| * QP. If QP creation succeeds, then the attributes are updated to |
| * the actual capabilities of the created QP. |
| */ |
| static inline struct ib_qp *ib_create_qp(struct ib_pd *pd, |
| struct ib_qp_init_attr *init_attr) |
| { |
| return ib_create_qp_kernel(pd, init_attr, KBUILD_MODNAME); |
| } |
| |
| /** |
| * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. |
| * @qp: The QP to modify. |
| * @attr: On input, specifies the QP attributes to modify. On output, |
| * the current values of selected QP attributes are returned. |
| * @attr_mask: A bit-mask used to specify which attributes of the QP |
| * are being modified. |
| * @udata: pointer to user's input output buffer information |
| * are being modified. |
| * It returns 0 on success and returns appropriate error code on error. |
| */ |
| int ib_modify_qp_with_udata(struct ib_qp *qp, |
| struct ib_qp_attr *attr, |
| int attr_mask, |
| struct ib_udata *udata); |
| |
| /** |
| * ib_modify_qp - Modifies the attributes for the specified QP and then |
| * transitions the QP to the given state. |
| * @qp: The QP to modify. |
| * @qp_attr: On input, specifies the QP attributes to modify. On output, |
| * the current values of selected QP attributes are returned. |
| * @qp_attr_mask: A bit-mask used to specify which attributes of the QP |
| * are being modified. |
| */ |
| int ib_modify_qp(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask); |
| |
| /** |
| * ib_query_qp - Returns the attribute list and current values for the |
| * specified QP. |
| * @qp: The QP to query. |
| * @qp_attr: The attributes of the specified QP. |
| * @qp_attr_mask: A bit-mask used to select specific attributes to query. |
| * @qp_init_attr: Additional attributes of the selected QP. |
| * |
| * The qp_attr_mask may be used to limit the query to gathering only the |
| * selected attributes. |
| */ |
| int ib_query_qp(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, |
| struct ib_qp_init_attr *qp_init_attr); |
| |
| /** |
| * ib_destroy_qp - Destroys the specified QP. |
| * @qp: The QP to destroy. |
| * @udata: Valid udata or NULL for kernel objects |
| */ |
| int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata); |
| |
| /** |
| * ib_destroy_qp - Destroys the specified kernel QP. |
| * @qp: The QP to destroy. |
| * |
| * NOTE: for user qp use ib_destroy_qp_user with valid udata! |
| */ |
| static inline int ib_destroy_qp(struct ib_qp *qp) |
| { |
| return ib_destroy_qp_user(qp, NULL); |
| } |
| |
| /** |
| * ib_open_qp - Obtain a reference to an existing sharable QP. |
| * @xrcd - XRC domain |
| * @qp_open_attr: Attributes identifying the QP to open. |
| * |
| * Returns a reference to a sharable QP. |
| */ |
| struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, |
| struct ib_qp_open_attr *qp_open_attr); |
| |
| /** |
| * ib_close_qp - Release an external reference to a QP. |
| * @qp: The QP handle to release |
| * |
| * The opened QP handle is released by the caller. The underlying |
| * shared QP is not destroyed until all internal references are released. |
| */ |
| int ib_close_qp(struct ib_qp *qp); |
| |
| /** |
| * ib_post_send - Posts a list of work requests to the send queue of |
| * the specified QP. |
| * @qp: The QP to post the work request on. |
| * @send_wr: A list of work requests to post on the send queue. |
| * @bad_send_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| * |
| * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate |
| * error is returned, the QP state shall not be affected, |
| * ib_post_send() will return an immediate error after queueing any |
| * earlier work requests in the list. |
| */ |
| static inline int ib_post_send(struct ib_qp *qp, |
| const struct ib_send_wr *send_wr, |
| const struct ib_send_wr **bad_send_wr) |
| { |
| const struct ib_send_wr *dummy; |
| |
| return qp->device->ops.post_send(qp, send_wr, bad_send_wr ? : &dummy); |
| } |
| |
| /** |
| * ib_post_recv - Posts a list of work requests to the receive queue of |
| * the specified QP. |
| * @qp: The QP to post the work request on. |
| * @recv_wr: A list of work requests to post on the receive queue. |
| * @bad_recv_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| */ |
| static inline int ib_post_recv(struct ib_qp *qp, |
| const struct ib_recv_wr *recv_wr, |
| const struct ib_recv_wr **bad_recv_wr) |
| { |
| const struct ib_recv_wr *dummy; |
| |
| return qp->device->ops.post_recv(qp, recv_wr, bad_recv_wr ? : &dummy); |
| } |
| |
| struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe, |
| int comp_vector, enum ib_poll_context poll_ctx, |
| const char *caller); |
| static inline struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private, |
| int nr_cqe, int comp_vector, |
| enum ib_poll_context poll_ctx) |
| { |
| return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx, |
| KBUILD_MODNAME); |
| } |
| |
| struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private, |
| int nr_cqe, enum ib_poll_context poll_ctx, |
| const char *caller); |
| |
| /** |
| * ib_alloc_cq_any: Allocate kernel CQ |
| * @dev: The IB device |
| * @private: Private data attached to the CQE |
| * @nr_cqe: Number of CQEs in the CQ |
| * @poll_ctx: Context used for polling the CQ |
| */ |
| static inline struct ib_cq *ib_alloc_cq_any(struct ib_device *dev, |
| void *private, int nr_cqe, |
| enum ib_poll_context poll_ctx) |
| { |
| return __ib_alloc_cq_any(dev, private, nr_cqe, poll_ctx, |
| KBUILD_MODNAME); |
| } |
| |
| void ib_free_cq(struct ib_cq *cq); |
| int ib_process_cq_direct(struct ib_cq *cq, int budget); |
| |
| /** |
| * ib_create_cq - Creates a CQ on the specified device. |
| * @device: The device on which to create the CQ. |
| * @comp_handler: A user-specified callback that is invoked when a |
| * completion event occurs on the CQ. |
| * @event_handler: A user-specified callback that is invoked when an |
| * asynchronous event not associated with a completion occurs on the CQ. |
| * @cq_context: Context associated with the CQ returned to the user via |
| * the associated completion and event handlers. |
| * @cq_attr: The attributes the CQ should be created upon. |
| * |
| * Users can examine the cq structure to determine the actual CQ size. |
| */ |
| struct ib_cq *__ib_create_cq(struct ib_device *device, |
| ib_comp_handler comp_handler, |
| void (*event_handler)(struct ib_event *, void *), |
| void *cq_context, |
| const struct ib_cq_init_attr *cq_attr, |
| const char *caller); |
| #define ib_create_cq(device, cmp_hndlr, evt_hndlr, cq_ctxt, cq_attr) \ |
| __ib_create_cq((device), (cmp_hndlr), (evt_hndlr), (cq_ctxt), (cq_attr), KBUILD_MODNAME) |
| |
| /** |
| * ib_resize_cq - Modifies the capacity of the CQ. |
| * @cq: The CQ to resize. |
| * @cqe: The minimum size of the CQ. |
| * |
| * Users can examine the cq structure to determine the actual CQ size. |
| */ |
| int ib_resize_cq(struct ib_cq *cq, int cqe); |
| |
| /** |
| * rdma_set_cq_moderation - Modifies moderation params of the CQ |
| * @cq: The CQ to modify. |
| * @cq_count: number of CQEs that will trigger an event |
| * @cq_period: max period of time in usec before triggering an event |
| * |
| */ |
| int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period); |
| |
| /** |
| * ib_destroy_cq_user - Destroys the specified CQ. |
| * @cq: The CQ to destroy. |
| * @udata: Valid user data or NULL for kernel objects |
| */ |
| int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata); |
| |
| /** |
| * ib_destroy_cq - Destroys the specified kernel CQ. |
| * @cq: The CQ to destroy. |
| * |
| * NOTE: for user cq use ib_destroy_cq_user with valid udata! |
| */ |
| static inline void ib_destroy_cq(struct ib_cq *cq) |
| { |
| int ret = ib_destroy_cq_user(cq, NULL); |
| |
| WARN_ONCE(ret, "Destroy of kernel CQ shouldn't fail"); |
| } |
| |
| /** |
| * ib_poll_cq - poll a CQ for completion(s) |
| * @cq:the CQ being polled |
| * @num_entries:maximum number of completions to return |
| * @wc:array of at least @num_entries &struct ib_wc where completions |
| * will be returned |
| * |
| * Poll a CQ for (possibly multiple) completions. If the return value |
| * is < 0, an error occurred. If the return value is >= 0, it is the |
| * number of completions returned. If the return value is |
| * non-negative and < num_entries, then the CQ was emptied. |
| */ |
| static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, |
| struct ib_wc *wc) |
| { |
| return cq->device->ops.poll_cq(cq, num_entries, wc); |
| } |
| |
| /** |
| * ib_req_notify_cq - Request completion notification on a CQ. |
| * @cq: The CQ to generate an event for. |
| * @flags: |
| * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP |
| * to request an event on the next solicited event or next work |
| * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS |
| * may also be |ed in to request a hint about missed events, as |
| * described below. |
| * |
| * Return Value: |
| * < 0 means an error occurred while requesting notification |
| * == 0 means notification was requested successfully, and if |
| * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events |
| * were missed and it is safe to wait for another event. In |
| * this case is it guaranteed that any work completions added |
| * to the CQ since the last CQ poll will trigger a completion |
| * notification event. |
| * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed |
| * in. It means that the consumer must poll the CQ again to |
| * make sure it is empty to avoid missing an event because of a |
| * race between requesting notification and an entry being |
| * added to the CQ. This return value means it is possible |
| * (but not guaranteed) that a work completion has been added |
| * to the CQ since the last poll without triggering a |
| * completion notification event. |
| */ |
| static inline int ib_req_notify_cq(struct ib_cq *cq, |
| enum ib_cq_notify_flags flags) |
| { |
| return cq->device->ops.req_notify_cq(cq, flags); |
| } |
| |
| struct ib_cq *ib_cq_pool_get(struct ib_device *dev, unsigned int nr_cqe, |
| int comp_vector_hint, |
| enum ib_poll_context poll_ctx); |
| |
| void ib_cq_pool_put(struct ib_cq *cq, unsigned int nr_cqe); |
| |
| /* |
| * Drivers that don't need a DMA mapping at the RDMA layer, set dma_device to |
| * NULL. This causes the ib_dma* helpers to just stash the kernel virtual |
| * address into the dma address. |
| */ |
| static inline bool ib_uses_virt_dma(struct ib_device *dev) |
| { |
| return IS_ENABLED(CONFIG_INFINIBAND_VIRT_DMA) && !dev->dma_device; |
| } |
| |
| /* |
| * Check if a IB device's underlying DMA mapping supports P2PDMA transfers. |
| */ |
| static inline bool ib_dma_pci_p2p_dma_supported(struct ib_device *dev) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return false; |
| |
| return dma_pci_p2pdma_supported(dev->dma_device); |
| } |
| |
| /** |
| * ib_dma_mapping_error - check a DMA addr for error |
| * @dev: The device for which the dma_addr was created |
| * @dma_addr: The DMA address to check |
| */ |
| static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return 0; |
| return dma_mapping_error(dev->dma_device, dma_addr); |
| } |
| |
| /** |
| * ib_dma_map_single - Map a kernel virtual address to DMA address |
| * @dev: The device for which the dma_addr is to be created |
| * @cpu_addr: The kernel virtual address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline u64 ib_dma_map_single(struct ib_device *dev, |
| void *cpu_addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return (uintptr_t)cpu_addr; |
| return dma_map_single(dev->dma_device, cpu_addr, size, direction); |
| } |
| |
| /** |
| * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_single(struct ib_device *dev, |
| u64 addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_unmap_single(dev->dma_device, addr, size, direction); |
| } |
| |
| /** |
| * ib_dma_map_page - Map a physical page to DMA address |
| * @dev: The device for which the dma_addr is to be created |
| * @page: The page to be mapped |
| * @offset: The offset within the page |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline u64 ib_dma_map_page(struct ib_device *dev, |
| struct page *page, |
| unsigned long offset, |
| size_t size, |
| enum dma_data_direction direction) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return (uintptr_t)(page_address(page) + offset); |
| return dma_map_page(dev->dma_device, page, offset, size, direction); |
| } |
| |
| /** |
| * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_page(struct ib_device *dev, |
| u64 addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_unmap_page(dev->dma_device, addr, size, direction); |
| } |
| |
| int ib_dma_virt_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents); |
| static inline int ib_dma_map_sg_attrs(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return ib_dma_virt_map_sg(dev, sg, nents); |
| return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, |
| dma_attrs); |
| } |
| |
| static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, |
| dma_attrs); |
| } |
| |
| /** |
| * ib_dma_map_sgtable_attrs - Map a scatter/gather table to DMA addresses |
| * @dev: The device for which the DMA addresses are to be created |
| * @sg: The sg_table object describing the buffer |
| * @direction: The direction of the DMA |
| * @attrs: Optional DMA attributes for the map operation |
| */ |
| static inline int ib_dma_map_sgtable_attrs(struct ib_device *dev, |
| struct sg_table *sgt, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| int nents; |
| |
| if (ib_uses_virt_dma(dev)) { |
| nents = ib_dma_virt_map_sg(dev, sgt->sgl, sgt->orig_nents); |
| if (!nents) |
| return -EIO; |
| sgt->nents = nents; |
| return 0; |
| } |
| return dma_map_sgtable(dev->dma_device, sgt, direction, dma_attrs); |
| } |
| |
| static inline void ib_dma_unmap_sgtable_attrs(struct ib_device *dev, |
| struct sg_table *sgt, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_unmap_sgtable(dev->dma_device, sgt, direction, dma_attrs); |
| } |
| |
| /** |
| * ib_dma_map_sg - Map a scatter/gather list to DMA addresses |
| * @dev: The device for which the DMA addresses are to be created |
| * @sg: The array of scatter/gather entries |
| * @nents: The number of scatter/gather entries |
| * @direction: The direction of the DMA |
| */ |
| static inline int ib_dma_map_sg(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction) |
| { |
| return ib_dma_map_sg_attrs(dev, sg, nents, direction, 0); |
| } |
| |
| /** |
| * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses |
| * @dev: The device for which the DMA addresses were created |
| * @sg: The array of scatter/gather entries |
| * @nents: The number of scatter/gather entries |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_sg(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction) |
| { |
| ib_dma_unmap_sg_attrs(dev, sg, nents, direction, 0); |
| } |
| |
| /** |
| * ib_dma_max_seg_size - Return the size limit of a single DMA transfer |
| * @dev: The device to query |
| * |
| * The returned value represents a size in bytes. |
| */ |
| static inline unsigned int ib_dma_max_seg_size(struct ib_device *dev) |
| { |
| if (ib_uses_virt_dma(dev)) |
| return UINT_MAX; |
| return dma_get_max_seg_size(dev->dma_device); |
| } |
| |
| /** |
| * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @dir: The direction of the DMA |
| */ |
| static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, |
| u64 addr, |
| size_t size, |
| enum dma_data_direction dir) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); |
| } |
| |
| /** |
| * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @dir: The direction of the DMA |
| */ |
| static inline void ib_dma_sync_single_for_device(struct ib_device *dev, |
| u64 addr, |
| size_t size, |
| enum dma_data_direction dir) |
| { |
| if (!ib_uses_virt_dma(dev)) |
| dma_sync_single_for_device(dev->dma_device, addr, size, dir); |
| } |
| |
| /* ib_reg_user_mr - register a memory region for virtual addresses from kernel |
| * space. This function should be called when 'current' is the owning MM. |
| */ |
| struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, |
| u64 virt_addr, int mr_access_flags); |
| |
| /* ib_advise_mr - give an advice about an address range in a memory region */ |
| int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice, |
| u32 flags, struct ib_sge *sg_list, u32 num_sge); |
| /** |
| * ib_dereg_mr_user - Deregisters a memory region and removes it from the |
| * HCA translation table. |
| * @mr: The memory region to deregister. |
| * @udata: Valid user data or NULL for kernel object |
| * |
| * This function can fail, if the memory region has memory windows bound to it. |
| */ |
| int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata); |
| |
| /** |
| * ib_dereg_mr - Deregisters a kernel memory region and removes it from the |
| * HCA translation table. |
| * @mr: The memory region to deregister. |
| * |
| * This function can fail, if the memory region has memory windows bound to it. |
| * |
| * NOTE: for user mr use ib_dereg_mr_user with valid udata! |
| */ |
| static inline int ib_dereg_mr(struct ib_mr *mr) |
| { |
| return ib_dereg_mr_user(mr, NULL); |
| } |
| |
| struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, |
| u32 max_num_sg); |
| |
| struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd, |
| u32 max_num_data_sg, |
| u32 max_num_meta_sg); |
| |
| /** |
| * ib_update_fast_reg_key - updates the key portion of the fast_reg MR |
| * R_Key and L_Key. |
| * @mr - struct ib_mr pointer to be updated. |
| * @newkey - new key to be used. |
| */ |
| static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) |
| { |
| mr->lkey = (mr->lkey & 0xffffff00) | newkey; |
| mr->rkey = (mr->rkey & 0xffffff00) | newkey; |
| } |
| |
| /** |
| * ib_inc_rkey - increments the key portion of the given rkey. Can be used |
| * for calculating a new rkey for type 2 memory windows. |
| * @rkey - the rkey to increment. |
| */ |
| static inline u32 ib_inc_rkey(u32 rkey) |
| { |
| const u32 mask = 0x000000ff; |
| return ((rkey + 1) & mask) | (rkey & ~mask); |
| } |
| |
| /** |
| * ib_attach_mcast - Attaches the specified QP to a multicast group. |
| * @qp: QP to attach to the multicast group. The QP must be type |
| * IB_QPT_UD. |
| * @gid: Multicast group GID. |
| * @lid: Multicast group LID in host byte order. |
| * |
| * In order to send and receive multicast packets, subnet |
| * administration must have created the multicast group and configured |
| * the fabric appropriately. The port associated with the specified |
| * QP must also be a member of the multicast group. |
| */ |
| int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
| |
| /** |
| * ib_detach_mcast - Detaches the specified QP from a multicast group. |
| * @qp: QP to detach from the multicast group. |
| * @gid: Multicast group GID. |
| * @lid: Multicast group LID in host byte order. |
| */ |
| int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
| |
| struct ib_xrcd *ib_alloc_xrcd_user(struct ib_device *device, |
| struct inode *inode, struct ib_udata *udata); |
| int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata); |
| |
| static inline int ib_check_mr_access(struct ib_device *ib_dev, |
| unsigned int flags) |
| { |
| u64 device_cap = ib_dev->attrs.device_cap_flags; |
| |
| /* |
| * Local write permission is required if remote write or |
| * remote atomic permission is also requested. |
| */ |
| if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && |
| !(flags & IB_ACCESS_LOCAL_WRITE)) |
| return -EINVAL; |
| |
| if (flags & ~IB_ACCESS_SUPPORTED) |
| return -EINVAL; |
| |
| if (flags & IB_ACCESS_ON_DEMAND && |
| !(ib_dev->attrs.kernel_cap_flags & IBK_ON_DEMAND_PAGING)) |
| return -EOPNOTSUPP; |
| |
| if ((flags & IB_ACCESS_FLUSH_GLOBAL && |
| !(device_cap & IB_DEVICE_FLUSH_GLOBAL)) || |
| (flags & IB_ACCESS_FLUSH_PERSISTENT && |
| !(device_cap & IB_DEVICE_FLUSH_PERSISTENT))) |
| return -EOPNOTSUPP; |
| |
| return 0; |
| } |
| |
| static inline bool ib_access_writable(int access_flags) |
| { |
| /* |
| * We have writable memory backing the MR if any of the following |
| * access flags are set. "Local write" and "remote write" obviously |
| * require write access. "Remote atomic" can do things like fetch and |
| * add, which will modify memory, and "MW bind" can change permissions |
| * by binding a window. |
| */ |
| return access_flags & |
| (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | |
| IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND); |
| } |
| |
| /** |
| * ib_check_mr_status: lightweight check of MR status. |
| * This routine may provide status checks on a selected |
| * ib_mr. first use is for signature status check. |
| * |
| * @mr: A memory region. |
| * @check_mask: Bitmask of which checks to perform from |
| * ib_mr_status_check enumeration. |
| * @mr_status: The container of relevant status checks. |
| * failed checks will be indicated in the status bitmask |
| * and the relevant info shall be in the error item. |
| */ |
| int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, |
| struct ib_mr_status *mr_status); |
| |
| /** |
| * ib_device_try_get: Hold a registration lock |
| * device: The device to lock |
| * |
| * A device under an active registration lock cannot become unregistered. It |
| * is only possible to obtain a registration lock on a device that is fully |
| * registered, otherwise this function returns false. |
| * |
| * The registration lock is only necessary for actions which require the |
| * device to still be registered. Uses that only require the device pointer to |
| * be valid should use get_device(&ibdev->dev) to hold the memory. |
| * |
| */ |
| static inline bool ib_device_try_get(struct ib_device *dev) |
| { |
| return refcount_inc_not_zero(&dev->refcount); |
| } |
| |
| void ib_device_put(struct ib_device *device); |
| struct ib_device *ib_device_get_by_netdev(struct net_device *ndev, |
| enum rdma_driver_id driver_id); |
| struct ib_device *ib_device_get_by_name(const char *name, |
| enum rdma_driver_id driver_id); |
| struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u32 port, |
| u16 pkey, const union ib_gid *gid, |
| const struct sockaddr *addr); |
| int ib_device_set_netdev(struct ib_device *ib_dev, struct net_device *ndev, |
| unsigned int port); |
| struct net_device *ib_device_netdev(struct ib_device *dev, u32 port); |
| |
| struct ib_wq *ib_create_wq(struct ib_pd *pd, |
| struct ib_wq_init_attr *init_attr); |
| int ib_destroy_wq_user(struct ib_wq *wq, struct ib_udata *udata); |
| |
| int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
| unsigned int *sg_offset, unsigned int page_size); |
| int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg, |
| int data_sg_nents, unsigned int *data_sg_offset, |
| struct scatterlist *meta_sg, int meta_sg_nents, |
| unsigned int *meta_sg_offset, unsigned int page_size); |
| |
| static inline int |
| ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
| unsigned int *sg_offset, unsigned int page_size) |
| { |
| int n; |
| |
| n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size); |
| mr->iova = 0; |
| |
| return n; |
| } |
| |
| int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, |
| unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64)); |
| |
| void ib_drain_rq(struct ib_qp *qp); |
| void ib_drain_sq(struct ib_qp *qp); |
| void ib_drain_qp(struct ib_qp *qp); |
| |
| int ib_get_eth_speed(struct ib_device *dev, u32 port_num, u16 *speed, |
| u8 *width); |
| |
| static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_ROCE) |
| return attr->roce.dmac; |
| return NULL; |
| } |
| |
| static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
| attr->ib.dlid = (u16)dlid; |
| else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| attr->opa.dlid = dlid; |
| } |
| |
| static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
| return attr->ib.dlid; |
| else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| return attr->opa.dlid; |
| return 0; |
| } |
| |
| static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl) |
| { |
| attr->sl = sl; |
| } |
| |
| static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr) |
| { |
| return attr->sl; |
| } |
| |
| static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr, |
| u8 src_path_bits) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
| attr->ib.src_path_bits = src_path_bits; |
| else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| attr->opa.src_path_bits = src_path_bits; |
| } |
| |
| static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
| return attr->ib.src_path_bits; |
| else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| return attr->opa.src_path_bits; |
| return 0; |
| } |
| |
| static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr, |
| bool make_grd) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| attr->opa.make_grd = make_grd; |
| } |
| |
| static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr) |
| { |
| if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
| return attr->opa.make_grd; |
| return false; |
| } |
| |
| static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u32 port_num) |
| { |
| attr->port_num = port_num; |
| } |
| |
| static inline u32 rdma_ah_get_port_num(const struct rdma_ah_attr *attr) |
| { |
| return attr->port_num; |
| } |
| |
| static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr, |
| u8 static_rate) |
| { |
| attr->static_rate = static_rate; |
| } |
| |
| static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr) |
| { |
| return attr->static_rate; |
| } |
| |
| static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr, |
| enum ib_ah_flags flag) |
| { |
| attr->ah_flags = flag; |
| } |
| |
| static inline enum ib_ah_flags |
| rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr) |
| { |
| return attr->ah_flags; |
| } |
| |
| static inline const struct ib_global_route |
| *rdma_ah_read_grh(const struct rdma_ah_attr *attr) |
| { |
| return &attr->grh; |
| } |
| |
| /*To retrieve and modify the grh */ |
| static inline struct ib_global_route |
| *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr) |
| { |
| return &attr->grh; |
| } |
| |
| static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid) |
| { |
| struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
| |
| memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid)); |
| } |
| |
| static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr, |
| __be64 prefix) |
| { |
| struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
| |
| grh->dgid.global.subnet_prefix = prefix; |
| } |
| |
| static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr, |
| __be64 if_id) |
| { |
| struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
| |
| grh->dgid.global.interface_id = if_id; |
| } |
| |
| static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr, |
| union ib_gid *dgid, u32 flow_label, |
| u8 sgid_index, u8 hop_limit, |
| u8 traffic_class) |
| { |
| struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
| |
| attr->ah_flags = IB_AH_GRH; |
| if (dgid) |
| grh->dgid = *dgid; |
| grh->flow_label = flow_label; |
| grh->sgid_index = sgid_index; |
| grh->hop_limit = hop_limit; |
| grh->traffic_class = traffic_class; |
| grh->sgid_attr = NULL; |
| } |
| |
| void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr); |
| void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, |
| u32 flow_label, u8 hop_limit, u8 traffic_class, |
| const struct ib_gid_attr *sgid_attr); |
| void rdma_copy_ah_attr(struct rdma_ah_attr *dest, |
| const struct rdma_ah_attr *src); |
| void rdma_replace_ah_attr(struct rdma_ah_attr *old, |
| const struct rdma_ah_attr *new); |
| void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src); |
| |
| /** |
| * rdma_ah_find_type - Return address handle type. |
| * |
| * @dev: Device to be checked |
| * @port_num: Port number |
| */ |
| static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev, |
| u32 port_num) |
| { |
| if (rdma_protocol_roce(dev, port_num)) |
| return RDMA_AH_ATTR_TYPE_ROCE; |
| if (rdma_protocol_ib(dev, port_num)) { |
| if (rdma_cap_opa_ah(dev, port_num)) |
| return RDMA_AH_ATTR_TYPE_OPA; |
| return RDMA_AH_ATTR_TYPE_IB; |
| } |
| |
| return RDMA_AH_ATTR_TYPE_UNDEFINED; |
| } |
| |
| /** |
| * ib_lid_cpu16 - Return lid in 16bit CPU encoding. |
| * In the current implementation the only way to |
| * get the 32bit lid is from other sources for OPA. |
| * For IB, lids will always be 16bits so cast the |
| * value accordingly. |
| * |
| * @lid: A 32bit LID |
| */ |
| static inline u16 ib_lid_cpu16(u32 lid) |
| { |
| WARN_ON_ONCE(lid & 0xFFFF0000); |
| return (u16)lid; |
| } |
| |
| /** |
| * ib_lid_be16 - Return lid in 16bit BE encoding. |
| * |
| * @lid: A 32bit LID |
| */ |
| static inline __be16 ib_lid_be16(u32 lid) |
| { |
| WARN_ON_ONCE(lid & 0xFFFF0000); |
| return cpu_to_be16((u16)lid); |
| } |
| |
| /** |
| * ib_get_vector_affinity - Get the affinity mappings of a given completion |
| * vector |
| * @device: the rdma device |
| * @comp_vector: index of completion vector |
| * |
| * Returns NULL on failure, otherwise a corresponding cpu map of the |
| * completion vector (returns all-cpus map if the device driver doesn't |
| * implement get_vector_affinity). |
| */ |
| static inline const struct cpumask * |
| ib_get_vector_affinity(struct ib_device *device, int comp_vector) |
| { |
| if (comp_vector < 0 || comp_vector >= device->num_comp_vectors || |
| !device->ops.get_vector_affinity) |
| return NULL; |
| |
| return device->ops.get_vector_affinity(device, comp_vector); |
| |
| } |
| |
| /** |
| * rdma_roce_rescan_device - Rescan all of the network devices in the system |
| * and add their gids, as needed, to the relevant RoCE devices. |
| * |
| * @device: the rdma device |
| */ |
| void rdma_roce_rescan_device(struct ib_device *ibdev); |
| |
| struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile); |
| |
| int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs); |
| |
| struct net_device *rdma_alloc_netdev(struct ib_device *device, u32 port_num, |
| enum rdma_netdev_t type, const char *name, |
| unsigned char name_assign_type, |
| void (*setup)(struct net_device *)); |
| |
| int rdma_init_netdev(struct ib_device *device, u32 port_num, |
| enum rdma_netdev_t type, const char *name, |
| unsigned char name_assign_type, |
| void (*setup)(struct net_device *), |
| struct net_device *netdev); |
| |
| /** |
| * rdma_device_to_ibdev - Get ib_device pointer from device pointer |
| * |
| * @device: device pointer for which ib_device pointer to retrieve |
| * |
| * rdma_device_to_ibdev() retrieves ib_device pointer from device. |
| * |
| */ |
| static inline struct ib_device *rdma_device_to_ibdev(struct device *device) |
| { |
| struct ib_core_device *coredev = |
| container_of(device, struct ib_core_device, dev); |
| |
| return coredev->owner; |
| } |
| |
| /** |
| * ibdev_to_node - return the NUMA node for a given ib_device |
| * @dev: device to get the NUMA node for. |
| */ |
| static inline int ibdev_to_node(struct ib_device *ibdev) |
| { |
| struct device *parent = ibdev->dev.parent; |
| |
| if (!parent) |
| return NUMA_NO_NODE; |
| return dev_to_node(parent); |
| } |
| |
| /** |
| * rdma_device_to_drv_device - Helper macro to reach back to driver's |
| * ib_device holder structure from device pointer. |
| * |
| * NOTE: New drivers should not make use of this API; This API is only for |
| * existing drivers who have exposed sysfs entries using |
| * ops->device_group. |
| */ |
| #define rdma_device_to_drv_device(dev, drv_dev_struct, ibdev_member) \ |
| container_of(rdma_device_to_ibdev(dev), drv_dev_struct, ibdev_member) |
| |
| bool rdma_dev_access_netns(const struct ib_device *device, |
| const struct net *net); |
| |
| #define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000) |
| #define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF) |
| #define IB_GRH_FLOWLABEL_MASK (0x000FFFFF) |
| |
| /** |
| * rdma_flow_label_to_udp_sport - generate a RoCE v2 UDP src port value based |
| * on the flow_label |
| * |
| * This function will convert the 20 bit flow_label input to a valid RoCE v2 |
| * UDP src port 14 bit value. All RoCE V2 drivers should use this same |
| * convention. |
| */ |
| static inline u16 rdma_flow_label_to_udp_sport(u32 fl) |
| { |
| u32 fl_low = fl & 0x03fff, fl_high = fl & 0xFC000; |
| |
| fl_low ^= fl_high >> 14; |
| return (u16)(fl_low | IB_ROCE_UDP_ENCAP_VALID_PORT_MIN); |
| } |
| |
| /** |
| * rdma_calc_flow_label - generate a RDMA symmetric flow label value based on |
| * local and remote qpn values |
| * |
| * This function folded the multiplication results of two qpns, 24 bit each, |
| * fields, and converts it to a 20 bit results. |
| * |
| * This function will create symmetric flow_label value based on the local |
| * and remote qpn values. this will allow both the requester and responder |
| * to calculate the same flow_label for a given connection. |
| * |
| * This helper function should be used by driver in case the upper layer |
| * provide a zero flow_label value. This is to improve entropy of RDMA |
| * traffic in the network. |
| */ |
| static inline u32 rdma_calc_flow_label(u32 lqpn, u32 rqpn) |
| { |
| u64 v = (u64)lqpn * rqpn; |
| |
| v ^= v >> 20; |
| v ^= v >> 40; |
| |
| return (u32)(v & IB_GRH_FLOWLABEL_MASK); |
| } |
| |
| /** |
| * rdma_get_udp_sport - Calculate and set UDP source port based on the flow |
| * label. If flow label is not defined in GRH then |
| * calculate it based on lqpn/rqpn. |
| * |
| * @fl: flow label from GRH |
| * @lqpn: local qp number |
| * @rqpn: remote qp number |
| */ |
| static inline u16 rdma_get_udp_sport(u32 fl, u32 lqpn, u32 rqpn) |
| { |
| if (!fl) |
| fl = rdma_calc_flow_label(lqpn, rqpn); |
| |
| return rdma_flow_label_to_udp_sport(fl); |
| } |
| |
| const struct ib_port_immutable* |
| ib_port_immutable_read(struct ib_device *dev, unsigned int port); |
| #endif /* IB_VERBS_H */ |