D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
lib
/
modules
/
4.4.0-1128-aws
/
build
/
include
/
rdma
/
Filename :
ib_verbs.h
back
Copy
/* * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2004 Infinicon Corporation. All rights reserved. * Copyright (c) 2004 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. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #if !defined(IB_VERBS_H) #define IB_VERBS_H #include <linux/types.h> #include <linux/device.h> #include <linux/mm.h> #include <linux/dma-mapping.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/rwsem.h> #include <linux/scatterlist.h> #include <linux/workqueue.h> #include <linux/socket.h> #include <uapi/linux/if_ether.h> #include <linux/atomic.h> #include <linux/mmu_notifier.h> #include <asm/uaccess.h> extern struct workqueue_struct *ib_wq; union ib_gid { u8 raw[16]; struct { __be64 subnet_prefix; __be64 interface_id; } global; }; extern union ib_gid zgid; struct ib_gid_attr { struct net_device *ndev; }; enum rdma_node_type { /* IB values map to NodeInfo:NodeType. */ RDMA_NODE_IB_CA = 1, RDMA_NODE_IB_SWITCH, RDMA_NODE_IB_ROUTER, RDMA_NODE_RNIC, RDMA_NODE_USNIC, RDMA_NODE_USNIC_UDP, }; enum rdma_transport_type { RDMA_TRANSPORT_IB, RDMA_TRANSPORT_IWARP, RDMA_TRANSPORT_USNIC, RDMA_TRANSPORT_USNIC_UDP }; 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(enum rdma_node_type node_type); 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 = 1, IB_DEVICE_BAD_PKEY_CNTR = (1<<1), IB_DEVICE_BAD_QKEY_CNTR = (1<<2), IB_DEVICE_RAW_MULTI = (1<<3), IB_DEVICE_AUTO_PATH_MIG = (1<<4), IB_DEVICE_CHANGE_PHY_PORT = (1<<5), IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6), IB_DEVICE_CURR_QP_STATE_MOD = (1<<7), IB_DEVICE_SHUTDOWN_PORT = (1<<8), IB_DEVICE_INIT_TYPE = (1<<9), IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10), IB_DEVICE_SYS_IMAGE_GUID = (1<<11), IB_DEVICE_RC_RNR_NAK_GEN = (1<<12), IB_DEVICE_SRQ_RESIZE = (1<<13), IB_DEVICE_N_NOTIFY_CQ = (1<<14), IB_DEVICE_LOCAL_DMA_LKEY = (1<<15), IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */ IB_DEVICE_MEM_WINDOW = (1<<17), /* * 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 = (1<<18), IB_DEVICE_UD_TSO = (1<<19), IB_DEVICE_XRC = (1<<20), IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21), IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22), IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23), IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24), IB_DEVICE_RC_IP_CSUM = (1<<25), IB_DEVICE_RAW_IP_CSUM = (1<<26), IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29), IB_DEVICE_SIGNATURE_HANDOVER = (1<<30), IB_DEVICE_ON_DEMAND_PAGING = (1<<31), }; enum ib_signature_prot_cap { IB_PROT_T10DIF_TYPE_1 = 1, IB_PROT_T10DIF_TYPE_2 = 1 << 1, IB_PROT_T10DIF_TYPE_3 = 1 << 2, }; enum ib_signature_guard_cap { IB_GUARD_T10DIF_CRC = 1, IB_GUARD_T10DIF_CSUM = 1 << 1, }; enum ib_atomic_cap { IB_ATOMIC_NONE, IB_ATOMIC_HCA, IB_ATOMIC_GLOB }; enum ib_odp_general_cap_bits { IB_ODP_SUPPORT = 1 << 0, }; 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, }; struct ib_odp_caps { uint64_t general_caps; struct { uint32_t rc_odp_caps; uint32_t uc_odp_caps; uint32_t ud_odp_caps; } per_transport_caps; }; enum ib_cq_creation_flags { IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0, }; struct ib_cq_init_attr { unsigned int cqe; int comp_vector; 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; int device_cap_flags; int max_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_fmr; int max_map_per_fmr; int max_srq; int max_srq_wr; int max_srq_sge; unsigned int max_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 */ }; enum ib_mtu { IB_MTU_256 = 1, IB_MTU_512 = 2, IB_MTU_1024 = 3, IB_MTU_2048 = 4, IB_MTU_4096 = 5 }; 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; } } 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_cap_flags { IB_PORT_SM = 1 << 1, IB_PORT_NOTICE_SUP = 1 << 2, IB_PORT_TRAP_SUP = 1 << 3, IB_PORT_OPT_IPD_SUP = 1 << 4, IB_PORT_AUTO_MIGR_SUP = 1 << 5, IB_PORT_SL_MAP_SUP = 1 << 6, IB_PORT_MKEY_NVRAM = 1 << 7, IB_PORT_PKEY_NVRAM = 1 << 8, IB_PORT_LED_INFO_SUP = 1 << 9, IB_PORT_SM_DISABLED = 1 << 10, IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14, IB_PORT_CM_SUP = 1 << 16, IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, IB_PORT_REINIT_SUP = 1 << 18, IB_PORT_DEVICE_MGMT_SUP = 1 << 19, IB_PORT_VENDOR_CLASS_SUP = 1 << 20, IB_PORT_DR_NOTICE_SUP = 1 << 21, IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, IB_PORT_BOOT_MGMT_SUP = 1 << 23, IB_PORT_LINK_LATENCY_SUP = 1 << 24, IB_PORT_CLIENT_REG_SUP = 1 << 25, IB_PORT_IP_BASED_GIDS = 1 << 26, }; enum ib_port_width { IB_WIDTH_1X = 1, 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_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 }; struct ib_protocol_stats { /* TBD... */ }; struct iw_protocol_stats { u64 ipInReceives; u64 ipInHdrErrors; u64 ipInTooBigErrors; u64 ipInNoRoutes; u64 ipInAddrErrors; u64 ipInUnknownProtos; u64 ipInTruncatedPkts; u64 ipInDiscards; u64 ipInDelivers; u64 ipOutForwDatagrams; u64 ipOutRequests; u64 ipOutDiscards; u64 ipOutNoRoutes; u64 ipReasmTimeout; u64 ipReasmReqds; u64 ipReasmOKs; u64 ipReasmFails; u64 ipFragOKs; u64 ipFragFails; u64 ipFragCreates; u64 ipInMcastPkts; u64 ipOutMcastPkts; u64 ipInBcastPkts; u64 ipOutBcastPkts; u64 tcpRtoAlgorithm; u64 tcpRtoMin; u64 tcpRtoMax; u64 tcpMaxConn; u64 tcpActiveOpens; u64 tcpPassiveOpens; u64 tcpAttemptFails; u64 tcpEstabResets; u64 tcpCurrEstab; u64 tcpInSegs; u64 tcpOutSegs; u64 tcpRetransSegs; u64 tcpInErrs; u64 tcpOutRsts; }; union rdma_protocol_stats { struct ib_protocol_stats ib; struct iw_protocol_stats iw; }; /* 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 /* 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_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_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) struct ib_port_attr { enum ib_port_state state; enum ib_mtu max_mtu; enum ib_mtu active_mtu; int gid_tbl_len; u32 port_cap_flags; u32 max_msg_sz; u32 bad_pkey_cntr; u32 qkey_viol_cntr; u16 pkey_tbl_len; u16 lid; u16 sm_lid; u8 lmc; u8 max_vl_num; u8 sm_sl; u8 subnet_timeout; u8 init_type_reply; u8 active_width; u8 active_speed; u8 phys_state; }; enum ib_device_modify_flags { IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 }; struct ib_device_modify { u64 sys_image_guid; char node_desc[64]; }; enum ib_port_modify_flags { IB_PORT_SHUTDOWN = 1, IB_PORT_INIT_TYPE = (1<<2), IB_PORT_RESET_QKEY_CNTR = (1<<3) }; 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, }; 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; u8 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 { 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; }; enum { IB_MULTICAST_QPN = 0xffffff }; #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) 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_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_SIGNATURE: memory region that is used for * signature operations (data-integrity * capable regions) */ enum ib_mr_type { IB_MR_TYPE_MEM_REG, IB_MR_TYPE_SIGNATURE, }; /** * Signature types * IB_SIG_TYPE_NONE: Unprotected. * IB_SIG_TYPE_T10_DIF: Type T10-DIF */ enum ib_signature_type { IB_SIG_TYPE_NONE, IB_SIG_TYPE_T10_DIF, }; /** * Signature T10-DIF block-guard types * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules. * IB_T10DIF_CSUM: Corresponds to IP checksum rules. */ enum ib_t10_dif_bg_type { IB_T10DIF_CRC, IB_T10DIF_CSUM }; /** * struct ib_t10_dif_domain - Parameters specific for T10-DIF * domain. * @bg_type: T10-DIF block guard type (CRC|CSUM) * @pi_interval: protection information interval. * @bg: seed of guard computation. * @app_tag: application tag of guard block * @ref_tag: initial guard block reference tag. * @ref_remap: Indicate wethear the reftag increments each block * @app_escape: Indicate to skip block check if apptag=0xffff * @ref_escape: Indicate to skip block check if reftag=0xffffffff * @apptag_check_mask: check bitmask of application tag. */ struct ib_t10_dif_domain { enum ib_t10_dif_bg_type bg_type; u16 pi_interval; u16 bg; u16 app_tag; u32 ref_tag; bool ref_remap; bool app_escape; bool ref_escape; u16 apptag_check_mask; }; /** * struct ib_sig_domain - Parameters for signature domain * @sig_type: specific signauture type * @sig: union of all signature domain attributes that may * be used to set domain layout. */ struct ib_sig_domain { enum ib_signature_type sig_type; union { struct ib_t10_dif_domain dif; } sig; }; /** * struct ib_sig_attrs - Parameters for signature handover operation * @check_mask: bitmask for signature byte check (8 bytes) * @mem: memory domain layout desciptor. * @wire: wire domain layout desciptor. */ struct ib_sig_attrs { u8 check_mask; struct ib_sig_domain mem; struct ib_sig_domain wire; }; enum ib_sig_err_type { IB_SIG_BAD_GUARD, IB_SIG_BAD_REFTAG, IB_SIG_BAD_APPTAG, }; /** * struct ib_sig_err - signature error descriptor */ struct ib_sig_err { enum ib_sig_err_type err_type; u32 expected; u32 actual; u64 sig_err_offset; u32 key; }; 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 ib_ah_attr { struct ib_global_route grh; u16 dlid; u8 sl; u8 src_path_bits; u8 static_rate; u8 ah_flags; u8 port_num; u8 dmac[ETH_ALEN]; }; 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_WC_RDMA_WRITE, IB_WC_RDMA_READ, IB_WC_COMP_SWAP, IB_WC_FETCH_ADD, IB_WC_BIND_MW, IB_WC_LSO, IB_WC_LOCAL_INV, IB_WC_REG_MR, IB_WC_MASKED_COMP_SWAP, IB_WC_MASKED_FETCH_ADD, /* * 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), }; struct ib_wc { u64 wr_id; 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; int wc_flags; u16 pkey_index; u16 slid; u8 sl; u8 dlid_path_bits; u8 port_num; /* valid only for DR SMPs on switches */ u8 smac[ETH_ALEN]; u16 vlan_id; }; 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_SRQT_XRC }; 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; union { struct { struct ib_xrcd *xrcd; struct ib_cq *cq; } xrc; } 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; }; 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_QPT_UC, IB_QPT_UD, IB_QPT_RAW_IPV6, IB_QPT_RAW_ETHERTYPE, IB_QPT_RAW_PACKET = 8, IB_QPT_XRC_INI = 9, IB_QPT_XRC_TGT, IB_QPT_MAX, /* 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 = 1 << 1, IB_QP_CREATE_NETIF_QP = 1 << 5, IB_QP_CREATE_SIGNATURE_EN = 1 << 6, IB_QP_CREATE_USE_GFP_NOIO = 1 << 7, /* 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 { 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; enum ib_qp_create_flags create_flags; u8 port_num; /* special QP types only */ }; 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), }; 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 ib_ah_attr ah_attr; struct ib_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; u8 port_num; u8 timeout; u8 retry_cnt; u8 rnr_retry; u8 alt_port_num; u8 alt_timeout; }; enum ib_wr_opcode { IB_WR_RDMA_WRITE, IB_WR_RDMA_WRITE_WITH_IMM, IB_WR_SEND, IB_WR_SEND_WITH_IMM, IB_WR_RDMA_READ, IB_WR_ATOMIC_CMP_AND_SWP, IB_WR_ATOMIC_FETCH_AND_ADD, IB_WR_LSO, IB_WR_SEND_WITH_INV, IB_WR_RDMA_READ_WITH_INV, IB_WR_LOCAL_INV, IB_WR_REG_MR, IB_WR_MASKED_ATOMIC_CMP_AND_SWP, IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, IB_WR_BIND_MW, IB_WR_REG_SIG_MR, /* 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_mw_bind_info - Parameters for a memory window bind operation. * @mr: A memory region to bind the memory window to. * @addr: The address where the memory window should begin. * @length: The length of the memory window, in bytes. * @mw_access_flags: Access flags from enum ib_access_flags for the window. * * This struct contains the shared parameters for type 1 and type 2 * memory window bind operations. */ struct ib_mw_bind_info { struct ib_mr *mr; u64 addr; u64 length; int mw_access_flags; }; struct ib_send_wr { struct ib_send_wr *next; u64 wr_id; 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 struct ib_rdma_wr *rdma_wr(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 struct ib_atomic_wr *atomic_wr(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 */ u8 port_num; /* valid for DR SMPs on switch only */ }; static inline struct ib_ud_wr *ud_wr(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 struct ib_reg_wr *reg_wr(struct ib_send_wr *wr) { return container_of(wr, struct ib_reg_wr, wr); } struct ib_bind_mw_wr { struct ib_send_wr wr; struct ib_mw *mw; /* The new rkey for the memory window. */ u32 rkey; struct ib_mw_bind_info bind_info; }; static inline struct ib_bind_mw_wr *bind_mw_wr(struct ib_send_wr *wr) { return container_of(wr, struct ib_bind_mw_wr, wr); } struct ib_sig_handover_wr { struct ib_send_wr wr; struct ib_sig_attrs *sig_attrs; struct ib_mr *sig_mr; int access_flags; struct ib_sge *prot; }; static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr) { return container_of(wr, struct ib_sig_handover_wr, wr); } struct ib_recv_wr { struct ib_recv_wr *next; u64 wr_id; struct ib_sge *sg_list; int num_sge; }; enum ib_access_flags { IB_ACCESS_LOCAL_WRITE = 1, IB_ACCESS_REMOTE_WRITE = (1<<1), IB_ACCESS_REMOTE_READ = (1<<2), IB_ACCESS_REMOTE_ATOMIC = (1<<3), IB_ACCESS_MW_BIND = (1<<4), IB_ZERO_BASED = (1<<5), IB_ACCESS_ON_DEMAND = (1<<6), }; struct ib_phys_buf { u64 addr; u64 size; }; struct ib_mr_attr { struct ib_pd *pd; u64 device_virt_addr; u64 size; int mr_access_flags; u32 lkey; u32 rkey; }; 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_mw_bind - Parameters for a type 1 memory window bind operation. * @wr_id: Work request id. * @send_flags: Flags from ib_send_flags enum. * @bind_info: More parameters of the bind operation. */ struct ib_mw_bind { u64 wr_id; int send_flags; struct ib_mw_bind_info bind_info; }; struct ib_fmr_attr { int max_pages; int max_maps; u8 page_shift; }; struct ib_umem; struct ib_ucontext { struct ib_device *device; struct list_head pd_list; struct list_head mr_list; struct list_head mw_list; struct list_head cq_list; struct list_head qp_list; struct list_head srq_list; struct list_head ah_list; struct list_head xrcd_list; struct list_head rule_list; int closing; struct pid *tgid; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING struct rb_root umem_tree; /* * Protects .umem_rbroot and tree, as well as odp_mrs_count and * mmu notifiers registration. */ struct rw_semaphore umem_rwsem; void (*invalidate_range)(struct ib_umem *umem, unsigned long start, unsigned long end); struct mmu_notifier mn; atomic_t notifier_count; /* A list of umems that don't have private mmu notifier counters yet. */ struct list_head no_private_counters; int odp_mrs_count; #endif }; struct ib_uobject { u64 user_handle; /* handle given to us by userspace */ struct ib_ucontext *context; /* associated user context */ void *object; /* containing object */ struct list_head list; /* link to context's list */ int id; /* index into kernel idr */ struct kref ref; struct rw_semaphore mutex; /* protects .live */ struct rcu_head rcu; /* kfree_rcu() overhead */ int live; }; struct ib_udata { const void __user *inbuf; void __user *outbuf; size_t inlen; size_t outlen; }; struct ib_pd { u32 local_dma_lkey; struct ib_device *device; struct ib_uobject *uobject; atomic_t usecnt; /* count all resources */ struct ib_mr *local_mr; }; struct ib_xrcd { struct ib_device *device; atomic_t usecnt; /* count all exposed resources */ struct inode *inode; struct mutex tgt_qp_mutex; struct list_head tgt_qp_list; }; struct ib_ah { struct ib_device *device; struct ib_pd *pd; struct ib_uobject *uobject; }; typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); struct ib_cq { struct ib_device *device; struct ib_uobject *uobject; ib_comp_handler comp_handler; void (*event_handler)(struct ib_event *, void *); void *cq_context; int cqe; atomic_t usecnt; /* count number of work queues */ }; struct ib_srq { struct ib_device *device; struct ib_pd *pd; struct ib_uobject *uobject; void (*event_handler)(struct ib_event *, void *); void *srq_context; enum ib_srq_type srq_type; atomic_t usecnt; union { struct { struct ib_xrcd *xrcd; struct ib_cq *cq; u32 srq_num; } xrc; } ext; }; struct ib_qp { struct ib_device *device; struct ib_pd *pd; struct ib_cq *send_cq; struct ib_cq *recv_cq; 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_uobject *uobject; void (*event_handler)(struct ib_event *, void *); void *qp_context; u32 qp_num; enum ib_qp_type qp_type; }; struct ib_mr { struct ib_device *device; struct ib_pd *pd; struct ib_uobject *uobject; u32 lkey; u32 rkey; u64 iova; u32 length; unsigned int page_size; atomic_t usecnt; /* count number of MWs */ }; struct ib_mw { struct ib_device *device; struct ib_pd *pd; struct ib_uobject *uobject; u32 rkey; enum ib_mw_type type; }; struct ib_fmr { struct ib_device *device; struct ib_pd *pd; struct list_head list; u32 lkey; u32 rkey; }; /* 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, /* L4 headers*/ IB_FLOW_SPEC_TCP = 0x40, IB_FLOW_SPEC_UDP = 0x41 }; #define IB_FLOW_SPEC_LAYER_MASK 0xF0 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4 /* Flow steering rule priority is set according to it's domain. * Lower domain value means higher priority. */ enum ib_flow_domain { IB_FLOW_DOMAIN_USER, IB_FLOW_DOMAIN_ETHTOOL, IB_FLOW_DOMAIN_RFS, IB_FLOW_DOMAIN_NIC, IB_FLOW_DOMAIN_NUM /* Must be last */ }; struct ib_flow_eth_filter { u8 dst_mac[6]; u8 src_mac[6]; __be16 ether_type; __be16 vlan_tag; }; struct ib_flow_spec_eth { enum ib_flow_spec_type type; u16 size; struct ib_flow_eth_filter val; struct ib_flow_eth_filter mask; }; struct ib_flow_ib_filter { __be16 dlid; __u8 sl; }; struct ib_flow_spec_ib { enum ib_flow_spec_type type; u16 size; struct ib_flow_ib_filter val; struct ib_flow_ib_filter mask; }; struct ib_flow_ipv4_filter { __be32 src_ip; __be32 dst_ip; }; struct ib_flow_spec_ipv4 { enum ib_flow_spec_type type; u16 size; struct ib_flow_ipv4_filter val; struct ib_flow_ipv4_filter mask; }; struct ib_flow_tcp_udp_filter { __be16 dst_port; __be16 src_port; }; struct ib_flow_spec_tcp_udp { enum ib_flow_spec_type type; u16 size; struct ib_flow_tcp_udp_filter val; struct ib_flow_tcp_udp_filter mask; }; union ib_flow_spec { struct { enum ib_flow_spec_type 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_attr { enum ib_flow_attr_type type; u16 size; u16 priority; u32 flags; u8 num_of_specs; u8 port; /* Following are the optional layers according to user request * struct ib_flow_spec_xxx * struct ib_flow_spec_yyy */ }; struct ib_flow { struct ib_qp *qp; struct ib_uobject *uobject; }; struct ib_mad_hdr; struct ib_grh; 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 */ }; #define IB_DEVICE_NAME_MAX 64 struct ib_cache { rwlock_t lock; struct ib_event_handler event_handler; struct ib_pkey_cache **pkey_cache; struct ib_gid_table **gid_cache; u8 *lmc_cache; }; struct ib_dma_mapping_ops { int (*mapping_error)(struct ib_device *dev, u64 dma_addr); u64 (*map_single)(struct ib_device *dev, void *ptr, size_t size, enum dma_data_direction direction); void (*unmap_single)(struct ib_device *dev, u64 addr, size_t size, enum dma_data_direction direction); u64 (*map_page)(struct ib_device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction direction); void (*unmap_page)(struct ib_device *dev, u64 addr, size_t size, enum dma_data_direction direction); int (*map_sg)(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); void (*unmap_sg)(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); void (*sync_single_for_cpu)(struct ib_device *dev, u64 dma_handle, size_t size, enum dma_data_direction dir); void (*sync_single_for_device)(struct ib_device *dev, u64 dma_handle, size_t size, enum dma_data_direction dir); void *(*alloc_coherent)(struct ib_device *dev, size_t size, u64 *dma_handle, gfp_t flag); void (*free_coherent)(struct ib_device *dev, size_t size, void *cpu_addr, u64 dma_handle); }; struct iw_cm_verbs; struct ib_port_immutable { int pkey_tbl_len; int gid_tbl_len; u32 core_cap_flags; u32 max_mad_size; }; struct ib_device { struct device *dma_device; char name[IB_DEVICE_NAME_MAX]; struct list_head event_handler_list; spinlock_t event_handler_lock; spinlock_t client_data_lock; struct list_head core_list; /* Access to the client_data_list is protected by the client_data_lock * spinlock and the lists_rwsem read-write semaphore */ struct list_head client_data_list; struct ib_cache cache; /** * port_immutable is indexed by port number */ struct ib_port_immutable *port_immutable; int num_comp_vectors; struct iw_cm_verbs *iwcm; int (*get_protocol_stats)(struct ib_device *device, union rdma_protocol_stats *stats); int (*query_device)(struct ib_device *device, struct ib_device_attr *device_attr, struct ib_udata *udata); int (*query_port)(struct ib_device *device, u8 port_num, struct ib_port_attr *port_attr); enum rdma_link_layer (*get_link_layer)(struct ib_device *device, u8 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 reaches * NETDEV_UNREGISTER_FINAL state. */ struct net_device *(*get_netdev)(struct ib_device *device, u8 port_num); int (*query_gid)(struct ib_device *device, u8 port_num, int index, union ib_gid *gid); /* When calling add_gid, the HW vendor's driver should * add the gid of device @device at gid index @index of * port @port_num to be @gid. 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 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)(struct ib_device *device, u8 port_num, unsigned int index, const union ib_gid *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 @index of port @port_num. * 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)(struct ib_device *device, u8 port_num, unsigned int index, void **context); int (*query_pkey)(struct ib_device *device, u8 port_num, u16 index, u16 *pkey); int (*modify_device)(struct ib_device *device, int device_modify_mask, struct ib_device_modify *device_modify); int (*modify_port)(struct ib_device *device, u8 port_num, int port_modify_mask, struct ib_port_modify *port_modify); struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, struct ib_udata *udata); int (*dealloc_ucontext)(struct ib_ucontext *context); int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma); struct ib_pd * (*alloc_pd)(struct ib_device *device, struct ib_ucontext *context, struct ib_udata *udata); int (*dealloc_pd)(struct ib_pd *pd); struct ib_ah * (*create_ah)(struct ib_pd *pd, struct ib_ah_attr *ah_attr); int (*modify_ah)(struct ib_ah *ah, struct ib_ah_attr *ah_attr); int (*query_ah)(struct ib_ah *ah, struct ib_ah_attr *ah_attr); int (*destroy_ah)(struct ib_ah *ah); struct ib_srq * (*create_srq)(struct ib_pd *pd, 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); int (*post_srq_recv)(struct ib_srq *srq, struct ib_recv_wr *recv_wr, struct ib_recv_wr **bad_recv_wr); struct ib_qp * (*create_qp)(struct ib_pd *pd, 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); int (*post_send)(struct ib_qp *qp, struct ib_send_wr *send_wr, struct ib_send_wr **bad_send_wr); int (*post_recv)(struct ib_qp *qp, struct ib_recv_wr *recv_wr, struct ib_recv_wr **bad_recv_wr); struct ib_cq * (*create_cq)(struct ib_device *device, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, struct ib_udata *udata); int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period); int (*destroy_cq)(struct ib_cq *cq); int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata); 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 (*req_ncomp_notif)(struct ib_cq *cq, int wc_cnt); struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, int mr_access_flags); struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start); 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); int (*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 (*query_mr)(struct ib_mr *mr, struct ib_mr_attr *mr_attr); int (*dereg_mr)(struct ib_mr *mr); struct ib_mr * (*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_sg); int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents); int (*rereg_phys_mr)(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start); struct ib_mw * (*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type); int (*bind_mw)(struct ib_qp *qp, struct ib_mw *mw, struct ib_mw_bind *mw_bind); int (*dealloc_mw)(struct ib_mw *mw); struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr); int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len, u64 iova); int (*unmap_fmr)(struct list_head *fmr_list); int (*dealloc_fmr)(struct ib_fmr *fmr); 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 (*process_mad)(struct ib_device *device, int process_mad_flags, u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh, const struct ib_mad_hdr *in_mad, size_t in_mad_size, struct ib_mad_hdr *out_mad, size_t *out_mad_size, u16 *out_mad_pkey_index); struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, struct ib_ucontext *ucontext, struct ib_udata *udata); int (*dealloc_xrcd)(struct ib_xrcd *xrcd); struct ib_flow * (*create_flow)(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain); int (*destroy_flow)(struct ib_flow *flow_id); int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, struct ib_mr_status *mr_status); void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); struct ib_dma_mapping_ops *dma_ops; struct module *owner; struct device dev; struct kobject *ports_parent; struct list_head port_list; enum { IB_DEV_UNINITIALIZED, IB_DEV_REGISTERED, IB_DEV_UNREGISTERED } reg_state; int uverbs_abi_ver; u64 uverbs_cmd_mask; u64 uverbs_ex_cmd_mask; char node_desc[64]; __be64 node_guid; u32 local_dma_lkey; u16 is_switch:1; u8 node_type; u8 phys_port_cnt; /** * 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 *, u8, struct ib_port_immutable *); }; struct ib_client { char *name; void (*add) (struct ib_device *); void (*remove)(struct ib_device *, void *client_data); /* 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, u8 port, u16 pkey, const union ib_gid *gid, const struct sockaddr *addr, void *client_data); struct list_head list; }; struct ib_device *ib_alloc_device(size_t size); void ib_dealloc_device(struct ib_device *device); int ib_register_device(struct ib_device *device, int (*port_callback)(struct ib_device *, u8, struct kobject *)); void ib_unregister_device(struct ib_device *device); int ib_register_client (struct ib_client *client); void ib_unregister_client(struct ib_client *client); void *ib_get_client_data(struct ib_device *device, struct ib_client *client); void ib_set_client_data(struct ib_device *device, struct ib_client *client, void *data); 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; } /** * 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 * @ll : link layer of port * * 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. */ int 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, enum rdma_link_layer ll); int ib_register_event_handler (struct ib_event_handler *event_handler); int ib_unregister_event_handler(struct ib_event_handler *event_handler); void ib_dispatch_event(struct ib_event *event); int ib_query_device(struct ib_device *device, struct ib_device_attr *device_attr); int ib_query_port(struct ib_device *device, u8 port_num, struct ib_port_attr *port_attr); enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 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 u8 rdma_start_port(const struct ib_device *device) { return rdma_cap_ib_switch(device) ? 0 : 1; } /** * rdma_end_port - Return the last valid port number for the device * specified * * @device: Device to be checked * * Return last port number */ static inline u8 rdma_end_port(const struct ib_device *device) { return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; } static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num) { return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB; } static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num) { return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE; } static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num) { return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP; } static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num) { return device->port_immutable[port_num].core_cap_flags & (RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_PROT_ROCE); } /** * 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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD) == 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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return device->port_immutable[port_num].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, u8 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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_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, u8 port_num) { return device->port_immutable[port_num].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, u8 port_num) { return rdma_protocol_roce(device, port_num) && device->add_gid && device->del_gid; } int ib_query_gid(struct ib_device *device, u8 port_num, int index, union ib_gid *gid, struct ib_gid_attr *attr); int ib_query_pkey(struct ib_device *device, u8 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, u8 port_num, int port_modify_mask, struct ib_port_modify *port_modify); int ib_find_gid(struct ib_device *device, union ib_gid *gid, struct net_device *ndev, u8 *port_num, u16 *index); int ib_find_pkey(struct ib_device *device, u8 port_num, u16 pkey, u16 *index); struct ib_pd *ib_alloc_pd(struct ib_device *device); void ib_dealloc_pd(struct ib_pd *pd); /** * ib_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. * * The address handle is used to reference a local or global destination * in all UD QP post sends. */ struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); /** * ib_init_ah_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. */ int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, const struct ib_wc *wc, const struct ib_grh *grh, struct ib_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, u8 port_num); /** * ib_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 ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); /** * ib_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 ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); /** * ib_destroy_ah - Destroys an address handle. * @ah: The address handle to destroy. */ int ib_destroy_ah(struct ib_ah *ah); /** * ib_create_srq - Creates a SRQ associated with the specified protection * domain. * @pd: The protection domain associated with the SRQ. * @srq_init_attr: A list of initial attributes required to create the * SRQ. If SRQ creation succeeds, then the attributes are updated to * the actual capabilities of the created SRQ. * * srq_attr->max_wr and srq_attr->max_sge are read the determine the * requested size of the SRQ, and set to the actual values allocated * on return. If ib_create_srq() succeeds, then max_wr and max_sge * will always be at least as large as the requested values. */ struct ib_srq *ib_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *srq_init_attr); /** * 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 - Destroys the specified SRQ. * @srq: The SRQ to destroy. */ int ib_destroy_srq(struct ib_srq *srq); /** * 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, struct ib_recv_wr *recv_wr, struct ib_recv_wr **bad_recv_wr) { return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); } /** * ib_create_qp - Creates a QP associated with the specified protection * domain. * @pd: The protection domain associated with the QP. * @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. */ struct ib_qp *ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *qp_init_attr); /** * 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. */ int ib_destroy_qp(struct ib_qp *qp); /** * 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, struct ib_send_wr *send_wr, struct ib_send_wr **bad_send_wr) { return qp->device->post_send(qp, send_wr, bad_send_wr); } /** * 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, struct ib_recv_wr *recv_wr, struct ib_recv_wr **bad_recv_wr) { return qp->device->post_recv(qp, recv_wr, bad_recv_wr); } /** * 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); /** * 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); /** * ib_modify_cq - 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 ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); /** * ib_destroy_cq - Destroys the specified CQ. * @cq: The CQ to destroy. */ int ib_destroy_cq(struct ib_cq *cq); /** * 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->poll_cq(cq, num_entries, wc); } /** * ib_peek_cq - Returns the number of unreaped completions currently * on the specified CQ. * @cq: The CQ to peek. * @wc_cnt: A minimum number of unreaped completions to check for. * * If the number of unreaped completions is greater than or equal to wc_cnt, * this function returns wc_cnt, otherwise, it returns the actual number of * unreaped completions. */ int ib_peek_cq(struct ib_cq *cq, int wc_cnt); /** * 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->req_notify_cq(cq, flags); } /** * ib_req_ncomp_notif - Request completion notification when there are * at least the specified number of unreaped completions on the CQ. * @cq: The CQ to generate an event for. * @wc_cnt: The number of unreaped completions that should be on the * CQ before an event is generated. */ static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) { return cq->device->req_ncomp_notif ? cq->device->req_ncomp_notif(cq, wc_cnt) : -ENOSYS; } /** * ib_get_dma_mr - Returns a memory region for system memory that is * usable for DMA. * @pd: The protection domain associated with the memory region. * @mr_access_flags: Specifies the memory access rights. * * Note that the ib_dma_*() functions defined below must be used * to create/destroy addresses used with the Lkey or Rkey returned * by ib_get_dma_mr(). */ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags); /** * 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 (dev->dma_ops) return dev->dma_ops->mapping_error(dev, dma_addr); 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 (dev->dma_ops) return dev->dma_ops->map_single(dev, cpu_addr, size, direction); 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 (dev->dma_ops) dev->dma_ops->unmap_single(dev, addr, size, direction); else dma_unmap_single(dev->dma_device, addr, size, direction); } static inline u64 ib_dma_map_single_attrs(struct ib_device *dev, void *cpu_addr, size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) { return dma_map_single_attrs(dev->dma_device, cpu_addr, size, direction, attrs); } static inline void ib_dma_unmap_single_attrs(struct ib_device *dev, u64 addr, size_t size, enum dma_data_direction direction, struct dma_attrs *attrs) { return dma_unmap_single_attrs(dev->dma_device, addr, size, direction, attrs); } /** * 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 (dev->dma_ops) return dev->dma_ops->map_page(dev, page, offset, size, direction); 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 (dev->dma_ops) dev->dma_ops->unmap_page(dev, addr, size, direction); else dma_unmap_page(dev->dma_device, addr, size, direction); } /** * 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) { if (dev->dma_ops) return dev->dma_ops->map_sg(dev, sg, nents, direction); return dma_map_sg(dev->dma_device, sg, nents, direction); } /** * 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) { if (dev->dma_ops) dev->dma_ops->unmap_sg(dev, sg, nents, direction); else dma_unmap_sg(dev->dma_device, sg, nents, direction); } static inline int ib_dma_map_sg_attrs(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction, struct dma_attrs *attrs) { return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs); } static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction, struct dma_attrs *attrs) { dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs); } /** * ib_sg_dma_address - Return the DMA address from a scatter/gather entry * @dev: The device for which the DMA addresses were created * @sg: The scatter/gather entry * * Note: this function is obsolete. To do: change all occurrences of * ib_sg_dma_address() into sg_dma_address(). */ static inline u64 ib_sg_dma_address(struct ib_device *dev, struct scatterlist *sg) { return sg_dma_address(sg); } /** * ib_sg_dma_len - Return the DMA length from a scatter/gather entry * @dev: The device for which the DMA addresses were created * @sg: The scatter/gather entry * * Note: this function is obsolete. To do: change all occurrences of * ib_sg_dma_len() into sg_dma_len(). */ static inline unsigned int ib_sg_dma_len(struct ib_device *dev, struct scatterlist *sg) { return sg_dma_len(sg); } /** * 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 (dev->dma_ops) dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir); else 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 (dev->dma_ops) dev->dma_ops->sync_single_for_device(dev, addr, size, dir); else dma_sync_single_for_device(dev->dma_device, addr, size, dir); } /** * ib_dma_alloc_coherent - Allocate memory and map it for DMA * @dev: The device for which the DMA address is requested * @size: The size of the region to allocate in bytes * @dma_handle: A pointer for returning the DMA address of the region * @flag: memory allocator flags */ static inline void *ib_dma_alloc_coherent(struct ib_device *dev, size_t size, u64 *dma_handle, gfp_t flag) { if (dev->dma_ops) return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag); else { dma_addr_t handle; void *ret; ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag); *dma_handle = handle; return ret; } } /** * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() * @dev: The device for which the DMA addresses were allocated * @size: The size of the region * @cpu_addr: the address returned by ib_dma_alloc_coherent() * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() */ static inline void ib_dma_free_coherent(struct ib_device *dev, size_t size, void *cpu_addr, u64 dma_handle) { if (dev->dma_ops) dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); else dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); } /** * ib_query_mr - Retrieves information about a specific memory region. * @mr: The memory region to retrieve information about. * @mr_attr: The attributes of the specified memory region. */ int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr); /** * ib_dereg_mr - Deregisters a 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. */ int ib_dereg_mr(struct ib_mr *mr); struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_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_alloc_mw - Allocates a memory window. * @pd: The protection domain associated with the memory window. * @type: The type of the memory window (1 or 2). */ struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type); /** * ib_bind_mw - Posts a work request to the send queue of the specified * QP, which binds the memory window to the given address range and * remote access attributes. * @qp: QP to post the bind work request on. * @mw: The memory window to bind. * @mw_bind: Specifies information about the memory window, including * its address range, remote access rights, and associated memory region. * * If there is no immediate error, the function will update the rkey member * of the mw parameter to its new value. The bind operation can still fail * asynchronously. */ static inline int ib_bind_mw(struct ib_qp *qp, struct ib_mw *mw, struct ib_mw_bind *mw_bind) { /* XXX reference counting in corresponding MR? */ return mw->device->bind_mw ? mw->device->bind_mw(qp, mw, mw_bind) : -ENOSYS; } /** * ib_dealloc_mw - Deallocates a memory window. * @mw: The memory window to deallocate. */ int ib_dealloc_mw(struct ib_mw *mw); /** * ib_alloc_fmr - Allocates a unmapped fast memory region. * @pd: The protection domain associated with the unmapped region. * @mr_access_flags: Specifies the memory access rights. * @fmr_attr: Attributes of the unmapped region. * * A fast memory region must be mapped before it can be used as part of * a work request. */ struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr); /** * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region. * @fmr: The fast memory region to associate with the pages. * @page_list: An array of physical pages to map to the fast memory region. * @list_len: The number of pages in page_list. * @iova: The I/O virtual address to use with the mapped region. */ static inline int ib_map_phys_fmr(struct ib_fmr *fmr, u64 *page_list, int list_len, u64 iova) { return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova); } /** * ib_unmap_fmr - Removes the mapping from a list of fast memory regions. * @fmr_list: A linked list of fast memory regions to unmap. */ int ib_unmap_fmr(struct list_head *fmr_list); /** * ib_dealloc_fmr - Deallocates a fast memory region. * @fmr: The fast memory region to deallocate. */ int ib_dealloc_fmr(struct ib_fmr *fmr); /** * 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); /** * ib_alloc_xrcd - Allocates an XRC domain. * @device: The device on which to allocate the XRC domain. */ struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device); /** * ib_dealloc_xrcd - Deallocates an XRC domain. * @xrcd: The XRC domain to deallocate. */ int ib_dealloc_xrcd(struct ib_xrcd *xrcd); struct ib_flow *ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain); int ib_destroy_flow(struct ib_flow *flow_id); static inline int ib_check_mr_access(int 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; 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); struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port, u16 pkey, const union ib_gid *gid, const struct sockaddr *addr); int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, unsigned int page_size); static inline int ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, unsigned int page_size) { int n; n = ib_map_mr_sg(mr, sg, sg_nents, page_size); mr->iova = 0; return n; } int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, int (*set_page)(struct ib_mr *, u64)); #endif /* IB_VERBS_H */