aboutsummaryrefslogtreecommitdiff
path: root/include/rdma/ib_verbs.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h1461
1 files changed, 1461 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
new file mode 100644
index 00000000000..e16cf94870f
--- /dev/null
+++ b/include/rdma/ib_verbs.h
@@ -0,0 +1,1461 @@
+/*
+ * 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 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.
+ *
+ * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#if !defined(IB_VERBS_H)
+#define IB_VERBS_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+
+#include <asm/atomic.h>
+#include <asm/scatterlist.h>
+#include <asm/uaccess.h>
+
+union ib_gid {
+ u8 raw[16];
+ struct {
+ __be64 subnet_prefix;
+ __be64 interface_id;
+ } global;
+};
+
+enum ib_node_type {
+ IB_NODE_CA = 1,
+ IB_NODE_SWITCH,
+ IB_NODE_ROUTER
+};
+
+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),
+};
+
+enum ib_atomic_cap {
+ IB_ATOMIC_NONE,
+ IB_ATOMIC_HCA,
+ IB_ATOMIC_GLOB
+};
+
+struct ib_device_attr {
+ u64 fw_ver;
+ __be64 node_guid;
+ __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;
+ 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;
+ u16 max_pkeys;
+ u8 local_ca_ack_delay;
+};
+
+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_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
+};
+
+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;
+ }
+}
+
+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
+};
+
+struct ib_device_modify {
+ u64 sys_image_guid;
+};
+
+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
+};
+
+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 __constant_htons(0xFFFF)
+
+enum ib_ah_flags {
+ IB_AH_GRH = 1
+};
+
+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;
+};
+
+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
+};
+
+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,
+/*
+ * 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)
+};
+
+struct ib_wc {
+ u64 wr_id;
+ enum ib_wc_status status;
+ enum ib_wc_opcode opcode;
+ u32 vendor_err;
+ u32 byte_len;
+ __be32 imm_data;
+ u32 qp_num;
+ 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 */
+};
+
+enum ib_cq_notify {
+ IB_CQ_SOLICITED,
+ IB_CQ_NEXT_COMP
+};
+
+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;
+};
+
+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_ETY
+};
+
+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_qp_cap cap;
+ enum ib_sig_type sq_sig_type;
+ enum ib_qp_type qp_type;
+ u8 port_num; /* special QP types only */
+};
+
+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)
+};
+
+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
+};
+
+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
+};
+
+enum ib_send_flags {
+ IB_SEND_FENCE = 1,
+ IB_SEND_SIGNALED = (1<<1),
+ IB_SEND_SOLICITED = (1<<2),
+ IB_SEND_INLINE = (1<<3)
+};
+
+struct ib_sge {
+ u64 addr;
+ u32 length;
+ u32 lkey;
+};
+
+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;
+ __be32 imm_data;
+ union {
+ struct {
+ u64 remote_addr;
+ u32 rkey;
+ } rdma;
+ struct {
+ u64 remote_addr;
+ u64 compare_add;
+ u64 swap;
+ u32 rkey;
+ } atomic;
+ struct {
+ struct ib_ah *ah;
+ struct ib_mad_hdr *mad_hdr;
+ u32 remote_qpn;
+ u32 remote_qkey;
+ int timeout_ms; /* valid for MADs only */
+ int retries; /* valid for MADs only */
+ u16 pkey_index; /* valid for GSI only */
+ u8 port_num; /* valid for DR SMPs on switch only */
+ } ud;
+ } 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)
+};
+
+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)
+};
+
+struct ib_mw_bind {
+ struct ib_mr *mr;
+ u64 wr_id;
+ u64 addr;
+ u32 length;
+ int send_flags;
+ int mw_access_flags;
+};
+
+struct ib_fmr_attr {
+ int max_pages;
+ int max_maps;
+ u8 page_size;
+};
+
+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;
+ spinlock_t lock;
+};
+
+struct ib_uobject {
+ u64 user_handle; /* handle given to us by userspace */
+ struct ib_ucontext *context; /* associated user context */
+ struct list_head list; /* link to context's list */
+ u32 id; /* index into kernel idr */
+};
+
+struct ib_umem {
+ unsigned long user_base;
+ unsigned long virt_base;
+ size_t length;
+ int offset;
+ int page_size;
+ int writable;
+ struct list_head chunk_list;
+};
+
+struct ib_umem_chunk {
+ struct list_head list;
+ int nents;
+ int nmap;
+ struct scatterlist page_list[0];
+};
+
+struct ib_udata {
+ void __user *inbuf;
+ void __user *outbuf;
+ size_t inlen;
+ size_t outlen;
+};
+
+#define IB_UMEM_MAX_PAGE_CHUNK \
+ ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
+ ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
+ (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
+
+struct ib_umem_object {
+ struct ib_uobject uobject;
+ struct ib_umem umem;
+};
+
+struct ib_pd {
+ struct ib_device *device;
+ struct ib_uobject *uobject;
+ atomic_t usecnt; /* count all resources */
+};
+
+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;
+ atomic_t usecnt;
+};
+
+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_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;
+ atomic_t usecnt; /* count number of MWs */
+};
+
+struct ib_mw {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ struct ib_uobject *uobject;
+ u32 rkey;
+};
+
+struct ib_fmr {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ struct list_head list;
+ u32 lkey;
+ u32 rkey;
+};
+
+struct ib_mad;
+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_cache **gid_cache;
+};
+
+struct ib_device {
+ struct device *dma_device;
+
+ char name[IB_DEVICE_NAME_MAX];
+
+ struct list_head event_handler_list;
+ spinlock_t event_handler_lock;
+
+ struct list_head core_list;
+ struct list_head client_data_list;
+ spinlock_t client_data_lock;
+
+ struct ib_cache cache;
+
+ u32 flags;
+
+ int (*query_device)(struct ib_device *device,
+ struct ib_device_attr *device_attr);
+ int (*query_port)(struct ib_device *device,
+ u8 port_num,
+ struct ib_port_attr *port_attr);
+ int (*query_gid)(struct ib_device *device,
+ u8 port_num, int index,
+ union ib_gid *gid);
+ 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);
+ 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);
+ 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, int cqe,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+ int (*destroy_cq)(struct ib_cq *cq);
+ int (*resize_cq)(struct ib_cq *cq, int *cqe);
+ 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 cq_notify);
+ 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,
+ struct ib_umem *region,
+ int mr_access_flags,
+ struct ib_udata *udata);
+ int (*query_mr)(struct ib_mr *mr,
+ struct ib_mr_attr *mr_attr);
+ int (*dereg_mr)(struct ib_mr *mr);
+ 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);
+ 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,
+ struct ib_wc *in_wc,
+ struct ib_grh *in_grh,
+ struct ib_mad *in_mad,
+ struct ib_mad *out_mad);
+
+ struct module *owner;
+ struct class_device class_dev;
+ struct kobject ports_parent;
+ struct list_head port_list;
+
+ enum {
+ IB_DEV_UNINITIALIZED,
+ IB_DEV_REGISTERED,
+ IB_DEV_UNREGISTERED
+ } reg_state;
+
+ u8 node_type;
+ u8 phys_port_cnt;
+};
+
+struct ib_client {
+ char *name;
+ void (*add) (struct ib_device *);
+ void (*remove)(struct ib_device *);
+
+ 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);
+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;
+}
+
+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);
+
+int ib_query_gid(struct ib_device *device,
+ u8 port_num, int index, union ib_gid *gid);
+
+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);
+
+/**
+ * ib_alloc_pd - Allocates an unused protection domain.
+ * @device: The device on which to allocate the protection domain.
+ *
+ * A protection domain object provides an association between QPs, shared
+ * receive queues, address handles, memory regions, and memory windows.
+ */
+struct ib_pd *ib_alloc_pd(struct ib_device *device);
+
+/**
+ * ib_dealloc_pd - Deallocates a protection domain.
+ * @pd: The protection domain to deallocate.
+ */
+int 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_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, struct ib_wc *wc,
+ 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.
+ *
+ * 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.
+ */
+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_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.
+ */
+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.
+ * @cqe: The minimum size of the CQ.
+ *
+ * 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, int cqe);
+
+/**
+ * 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_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.
+ * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
+ * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
+ * notification will occur on the next completion.
+ */
+static inline int ib_req_notify_cq(struct ib_cq *cq,
+ enum ib_cq_notify cq_notify)
+{
+ return cq->device->req_notify_cq(cq, cq_notify);
+}
+
+/**
+ * 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.
+ */
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
+
+/**
+ * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
+ * by an HCA.
+ * @pd: The protection domain associated assigned to the registered region.
+ * @phys_buf_array: Specifies a list of physical buffers to use in the
+ * memory region.
+ * @num_phys_buf: Specifies the size of the phys_buf_array.
+ * @mr_access_flags: Specifies the memory access rights.
+ * @iova_start: The offset of the region's starting I/O virtual address.
+ */
+struct ib_mr *ib_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);
+
+/**
+ * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
+ * Conceptually, this call performs the functions deregister memory region
+ * followed by register physical memory region. Where possible,
+ * resources are reused instead of deallocated and reallocated.
+ * @mr: The memory region to modify.
+ * @mr_rereg_mask: A bit-mask used to indicate which of the following
+ * properties of the memory region are being modified.
+ * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
+ * the new protection domain to associated with the memory region,
+ * otherwise, this parameter is ignored.
+ * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
+ * field specifies a list of physical buffers to use in the new
+ * translation, otherwise, this parameter is ignored.
+ * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
+ * field specifies the size of the phys_buf_array, otherwise, this
+ * parameter is ignored.
+ * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
+ * field specifies the new memory access rights, otherwise, this
+ * parameter is ignored.
+ * @iova_start: The offset of the region's starting I/O virtual address.
+ */
+int ib_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);
+
+/**
+ * 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.
+ */
+int ib_dereg_mr(struct ib_mr *mr);
+
+/**
+ * ib_alloc_mw - Allocates a memory window.
+ * @pd: The protection domain associated with the memory window.
+ */
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
+
+/**
+ * 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.
+ */
+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);
+
+#endif /* IB_VERBS_H */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-24 18:52:19 +0000