mirror of https://github.com/ipxe/ipxe.git
713 lines
18 KiB
C
713 lines
18 KiB
C
#ifndef _IPXE_INFINIBAND_H
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#define _IPXE_INFINIBAND_H
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/** @file
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*
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* Infiniband protocol
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/refcnt.h>
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#include <ipxe/device.h>
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#include <ipxe/tables.h>
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#include <ipxe/ib_packet.h>
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#include <ipxe/ib_mad.h>
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#include <ipxe/if_ether.h>
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/** Subnet management interface QPN */
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#define IB_QPN_SMI 0
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/** Subnet management interface queue key */
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#define IB_QKEY_SMI 0
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/** General service interface QPN */
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#define IB_QPN_GSI 1
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/** General service interface queue key */
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#define IB_QKEY_GSI 0x80010000UL
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/** Broadcast QPN */
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#define IB_QPN_BROADCAST 0xffffffUL
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/** QPN mask */
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#define IB_QPN_MASK 0xffffffUL
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/** Default Infiniband partition key */
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#define IB_PKEY_DEFAULT 0xffff
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/** Infiniband partition key full membership flag */
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#define IB_PKEY_FULL 0x8000
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/**
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* Maximum payload size
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*
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* This is currently hard-coded in various places (drivers, subnet
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* management agent, etc.) to 2048.
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*/
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#define IB_MAX_PAYLOAD_SIZE 2048
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struct ib_device;
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struct ib_queue_pair;
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struct ib_address_vector;
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struct ib_completion_queue;
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struct ib_mad_interface;
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/** Infiniband transmission rates */
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enum ib_rate {
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IB_RATE_2_5 = 2,
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IB_RATE_10 = 3,
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IB_RATE_30 = 4,
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IB_RATE_5 = 5,
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IB_RATE_20 = 6,
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IB_RATE_40 = 7,
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IB_RATE_60 = 8,
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IB_RATE_80 = 9,
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IB_RATE_120 = 10,
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};
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/** An Infiniband Address Vector */
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struct ib_address_vector {
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/** Queue Pair Number */
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unsigned long qpn;
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/** Queue key
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*
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* Not specified for received packets.
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*/
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unsigned long qkey;
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/** Local ID */
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unsigned int lid;
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/** Rate
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*
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* Not specified for received packets.
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*/
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enum ib_rate rate;
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/** Service level */
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unsigned int sl;
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/** GID is present */
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unsigned int gid_present;
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/** GID, if present */
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union ib_gid gid;
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/** VLAN is present */
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unsigned int vlan_present;
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/** VLAN, if present */
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unsigned int vlan;
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};
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/** An Infiniband Work Queue */
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struct ib_work_queue {
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/** Containing queue pair */
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struct ib_queue_pair *qp;
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/** "Is a send queue" flag */
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int is_send;
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/** Associated completion queue */
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struct ib_completion_queue *cq;
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/** List of work queues on this completion queue */
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struct list_head list;
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/** Packet sequence number */
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uint32_t psn;
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/** Number of work queue entries */
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unsigned int num_wqes;
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/** Number of occupied work queue entries */
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unsigned int fill;
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/** Next work queue entry index
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*
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* This is the index of the next entry to be filled (i.e. the
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* first empty entry). This value is not bounded by num_wqes;
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* users must logical-AND with (num_wqes-1) to generate an
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* array index.
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*/
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unsigned long next_idx;
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/** I/O buffers assigned to work queue */
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struct io_buffer **iobufs;
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/** Driver private data */
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void *drv_priv;
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};
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/** An Infiniband multicast GID */
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struct ib_multicast_gid {
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/** List of multicast GIDs on this QP */
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struct list_head list;
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/** Multicast GID */
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union ib_gid gid;
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};
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/** An Infiniband queue pair type */
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enum ib_queue_pair_type {
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IB_QPT_SMI,
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IB_QPT_GSI,
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IB_QPT_UD,
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IB_QPT_RC,
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IB_QPT_ETH,
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};
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/** Infiniband queue pair operations */
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struct ib_queue_pair_operations {
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/** Allocate receive I/O buffer
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*
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* @v len Maximum receive length
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* @ret iobuf I/O buffer (or NULL if out of memory)
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*/
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struct io_buffer * ( * alloc_iob ) ( size_t len );
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};
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/** An Infiniband Queue Pair */
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struct ib_queue_pair {
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/** Containing Infiniband device */
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struct ib_device *ibdev;
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/** List of queue pairs on this Infiniband device */
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struct list_head list;
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/** Queue pair name */
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const char *name;
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/** Queue pair number */
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unsigned long qpn;
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/** Externally-visible queue pair number
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*
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* This may differ from the real queue pair number (e.g. when
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* the HCA cannot use the management QPNs 0 and 1 as hardware
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* QPNs and needs to remap them).
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*/
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unsigned long ext_qpn;
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/** Queue pair type */
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enum ib_queue_pair_type type;
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/** Queue key */
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unsigned long qkey;
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/** Send queue */
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struct ib_work_queue send;
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/** Receive queue */
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struct ib_work_queue recv;
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/** List of multicast GIDs */
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struct list_head mgids;
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/** Address vector */
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struct ib_address_vector av;
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/** Queue pair operations */
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struct ib_queue_pair_operations *op;
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/** Driver private data */
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void *drv_priv;
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/** Queue owner private data */
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void *owner_priv;
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};
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/** Infiniband completion queue operations */
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struct ib_completion_queue_operations {
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/**
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* Complete Send WQE
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v iobuf I/O buffer
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* @v rc Completion status code
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*/
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void ( * complete_send ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct io_buffer *iobuf, int rc );
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/**
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* Complete Receive WQE
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v dest Destination address vector, or NULL
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* @v source Source address vector, or NULL
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* @v iobuf I/O buffer
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* @v rc Completion status code
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*/
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void ( * complete_recv ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct ib_address_vector *dest,
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struct ib_address_vector *source,
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struct io_buffer *iobuf, int rc );
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};
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/** An Infiniband Completion Queue */
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struct ib_completion_queue {
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/** Containing Infiniband device */
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struct ib_device *ibdev;
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/** List of completion queues on this Infiniband device */
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struct list_head list;
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/** Completion queue number */
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unsigned long cqn;
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/** Number of completion queue entries */
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unsigned int num_cqes;
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/** Next completion queue entry index
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*
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* This is the index of the next entry to be filled (i.e. the
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* first empty entry). This value is not bounded by num_wqes;
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* users must logical-AND with (num_wqes-1) to generate an
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* array index.
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*/
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unsigned long next_idx;
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/** List of work queues completing to this queue */
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struct list_head work_queues;
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/** Completion queue operations */
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struct ib_completion_queue_operations *op;
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/** Driver private data */
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void *drv_priv;
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};
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/**
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* Infiniband device operations
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*
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* These represent a subset of the Infiniband Verbs.
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*/
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struct ib_device_operations {
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/** Create completion queue
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*
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* @v ibdev Infiniband device
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* @v cq Completion queue
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* @ret rc Return status code
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*/
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int ( * create_cq ) ( struct ib_device *ibdev,
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struct ib_completion_queue *cq );
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/** Destroy completion queue
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*
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* @v ibdev Infiniband device
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* @v cq Completion queue
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*/
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void ( * destroy_cq ) ( struct ib_device *ibdev,
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struct ib_completion_queue *cq );
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/** Create queue pair
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @ret rc Return status code
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*/
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int ( * create_qp ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp );
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/** Modify queue pair
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @ret rc Return status code
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*/
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int ( * modify_qp ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp );
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/** Destroy queue pair
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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*/
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void ( * destroy_qp ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp );
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/** Post send work queue entry
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v dest Destination address vector
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* @v iobuf I/O buffer
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* @ret rc Return status code
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*
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* If this method returns success, the I/O buffer remains
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* owned by the queue pair. If this method returns failure,
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* the I/O buffer is immediately released; the failure is
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* interpreted as "failure to enqueue buffer".
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*/
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int ( * post_send ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct ib_address_vector *dest,
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struct io_buffer *iobuf );
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/** Post receive work queue entry
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v iobuf I/O buffer
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* @ret rc Return status code
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*
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* If this method returns success, the I/O buffer remains
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* owned by the queue pair. If this method returns failure,
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* the I/O buffer is immediately released; the failure is
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* interpreted as "failure to enqueue buffer".
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*/
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int ( * post_recv ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct io_buffer *iobuf );
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/** Poll completion queue
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*
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* @v ibdev Infiniband device
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* @v cq Completion queue
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*
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* The relevant completion handler (specified at completion
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* queue creation time) takes ownership of the I/O buffer.
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*/
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void ( * poll_cq ) ( struct ib_device *ibdev,
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struct ib_completion_queue *cq );
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/**
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* Poll event queue
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*
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* @v ibdev Infiniband device
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*/
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void ( * poll_eq ) ( struct ib_device *ibdev );
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/**
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* Open port
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*
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* @v ibdev Infiniband device
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* @ret rc Return status code
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*/
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int ( * open ) ( struct ib_device *ibdev );
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/**
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* Close port
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*
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* @v ibdev Infiniband device
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*/
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void ( * close ) ( struct ib_device *ibdev );
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/** Attach to multicast group
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v gid Multicast GID
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* @ret rc Return status code
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*/
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int ( * mcast_attach ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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union ib_gid *gid );
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/** Detach from multicast group
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*
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* @v ibdev Infiniband device
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* @v qp Queue pair
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* @v gid Multicast GID
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*/
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void ( * mcast_detach ) ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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union ib_gid *gid );
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/** Set port information
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*
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* @v ibdev Infiniband device
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* @v mad Set port information MAD
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*
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* This method is required only by adapters that do not have
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* an embedded SMA.
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*/
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int ( * set_port_info ) ( struct ib_device *ibdev, union ib_mad *mad );
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/** Set partition key table
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*
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* @v ibdev Infiniband device
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* @v mad Set partition key table MAD
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*
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* This method is required only by adapters that do not have
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* an embedded SMA.
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*/
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int ( * set_pkey_table ) ( struct ib_device *ibdev,
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union ib_mad *mad );
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};
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/** Maximum length of an Infiniband device name */
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#define IBDEV_NAME_LEN 8
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/** An Infiniband device */
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struct ib_device {
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/** Reference counter */
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struct refcnt refcnt;
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/** List of Infiniband devices */
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struct list_head list;
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/** List of open Infiniband devices */
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struct list_head open_list;
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/** Index of this Infiniband device */
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unsigned int index;
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/** Name of this Infiniband device */
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char name[IBDEV_NAME_LEN];
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/** Underlying device */
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struct device *dev;
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/** List of completion queues */
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struct list_head cqs;
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/** List of queue pairs */
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struct list_head qps;
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/** Infiniband operations */
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struct ib_device_operations *op;
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/** Port number */
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unsigned int port;
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/** Total ports on device */
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unsigned int ports;
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/** Port open request counter */
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unsigned int open_count;
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/** Port state */
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uint8_t port_state;
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/** Link width supported */
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uint8_t link_width_supported;
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/** Link width enabled */
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uint8_t link_width_enabled;
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/** Link width active */
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uint8_t link_width_active;
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/** Link speed supported */
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uint8_t link_speed_supported;
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/** Link speed enabled */
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uint8_t link_speed_enabled;
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/** Link speed active */
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uint8_t link_speed_active;
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/** Node GUID */
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union ib_guid node_guid;
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/** Port GID (comprising GID prefix and port GUID) */
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union ib_gid gid;
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/** Port LID */
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uint16_t lid;
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/** Subnet manager LID */
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uint16_t sm_lid;
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/** Subnet manager SL */
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uint8_t sm_sl;
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/** Partition key */
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uint16_t pkey;
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/** RDMA key
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*
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* This is a single key allowing unrestricted access to
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* memory.
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*/
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uint32_t rdma_key;
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/** Subnet management interface */
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struct ib_mad_interface *smi;
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/** General services interface */
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struct ib_mad_interface *gsi;
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/** IPoIB LEMAC (if non-default) */
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uint8_t lemac[ETH_ALEN];
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/** Driver private data */
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void *drv_priv;
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};
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/** An Infiniband upper-layer driver */
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struct ib_driver {
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/** Name */
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const char *name;
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/** Probe device
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*
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* @v ibdev Infiniband device
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* @ret rc Return status code
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*/
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int ( * probe ) ( struct ib_device *ibdev );
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/** Notify of device or link state change
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*
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* @v ibdev Infiniband device
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*/
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void ( * notify ) ( struct ib_device *ibdev );
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/** Remove device
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*
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* @v ibdev Infiniband device
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*/
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void ( * remove ) ( struct ib_device *ibdev );
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};
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/** Infiniband driver table */
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#define IB_DRIVERS __table ( struct ib_driver, "ib_drivers" )
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/** Declare an Infiniband driver */
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#define __ib_driver __table_entry ( IB_DRIVERS, 01 )
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extern int ib_create_cq ( struct ib_device *ibdev, unsigned int num_cqes,
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struct ib_completion_queue_operations *op,
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struct ib_completion_queue **new_cq );
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extern void ib_destroy_cq ( struct ib_device *ibdev,
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struct ib_completion_queue *cq );
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extern void ib_poll_cq ( struct ib_device *ibdev,
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struct ib_completion_queue *cq );
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extern int ib_create_qp ( struct ib_device *ibdev, enum ib_queue_pair_type type,
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unsigned int num_send_wqes,
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struct ib_completion_queue *send_cq,
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unsigned int num_recv_wqes,
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struct ib_completion_queue *recv_cq,
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struct ib_queue_pair_operations *op,
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const char *name, struct ib_queue_pair **new_qp );
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extern int ib_modify_qp ( struct ib_device *ibdev, struct ib_queue_pair *qp );
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extern void ib_destroy_qp ( struct ib_device *ibdev,
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struct ib_queue_pair *qp );
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extern struct ib_queue_pair * ib_find_qp_qpn ( struct ib_device *ibdev,
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unsigned long qpn );
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extern struct ib_queue_pair * ib_find_qp_mgid ( struct ib_device *ibdev,
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union ib_gid *gid );
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extern struct ib_work_queue * ib_find_wq ( struct ib_completion_queue *cq,
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unsigned long qpn, int is_send );
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extern int ib_post_send ( struct ib_device *ibdev, struct ib_queue_pair *qp,
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struct ib_address_vector *dest,
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struct io_buffer *iobuf );
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extern int ib_post_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
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struct io_buffer *iobuf );
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extern void ib_complete_send ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct io_buffer *iobuf, int rc );
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extern void ib_complete_recv ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct ib_address_vector *dest,
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struct ib_address_vector *source,
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struct io_buffer *iobuf, int rc );
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extern void ib_refill_recv ( struct ib_device *ibdev,
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struct ib_queue_pair *qp );
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extern int ib_open ( struct ib_device *ibdev );
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extern void ib_close ( struct ib_device *ibdev );
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extern int ib_link_rc ( struct ib_device *ibdev );
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extern int ib_mcast_attach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
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union ib_gid *gid );
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extern void ib_mcast_detach ( struct ib_device *ibdev,
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struct ib_queue_pair *qp, union ib_gid *gid );
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extern int ib_set_port_info ( struct ib_device *ibdev, union ib_mad *mad );
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extern int ib_set_pkey_table ( struct ib_device *ibdev, union ib_mad *mad );
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extern struct ib_device * alloc_ibdev ( size_t priv_size );
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extern int register_ibdev ( struct ib_device *ibdev );
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extern void unregister_ibdev ( struct ib_device *ibdev );
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extern struct ib_device * find_ibdev ( union ib_gid *gid );
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extern struct ib_device * last_opened_ibdev ( void );
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extern void ib_link_state_changed ( struct ib_device *ibdev );
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extern void ib_poll_eq ( struct ib_device *ibdev );
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extern struct list_head ib_devices;
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/** Iterate over all network devices */
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#define for_each_ibdev( ibdev ) \
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list_for_each_entry ( (ibdev), &ib_devices, list )
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/**
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* Check link state of Infiniband device
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*
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* @v ibdev Infiniband device
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* @ret link_up Link is up
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*/
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static inline __always_inline int
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ib_link_ok ( struct ib_device *ibdev ) {
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return ( ibdev->port_state == IB_PORT_STATE_ACTIVE );
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}
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/**
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* Check whether or not Infiniband device is open
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*
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* @v ibdev Infiniband device
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* @v is_open Infiniband device is open
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*/
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static inline __attribute__ (( always_inline )) int
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ib_is_open ( struct ib_device *ibdev ) {
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return ( ibdev->open_count > 0 );
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}
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/**
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* Get reference to Infiniband device
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*
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* @v ibdev Infiniband device
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* @ret ibdev Infiniband device
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*/
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static inline __always_inline struct ib_device *
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ibdev_get ( struct ib_device *ibdev ) {
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ref_get ( &ibdev->refcnt );
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return ibdev;
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}
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/**
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* Drop reference to Infiniband device
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*
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* @v ibdev Infiniband device
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*/
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static inline __always_inline void
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ibdev_put ( struct ib_device *ibdev ) {
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ref_put ( &ibdev->refcnt );
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}
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/**
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* Set Infiniband work queue driver-private data
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*
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* @v wq Work queue
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* @v priv Private data
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*/
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static inline __always_inline void
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ib_wq_set_drvdata ( struct ib_work_queue *wq, void *priv ) {
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wq->drv_priv = priv;
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}
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/**
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* Get Infiniband work queue driver-private data
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*
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* @v wq Work queue
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* @ret priv Private data
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*/
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static inline __always_inline void *
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ib_wq_get_drvdata ( struct ib_work_queue *wq ) {
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return wq->drv_priv;
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}
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/**
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* Set Infiniband queue pair driver-private data
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*
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* @v qp Queue pair
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* @v priv Private data
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*/
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static inline __always_inline void
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ib_qp_set_drvdata ( struct ib_queue_pair *qp, void *priv ) {
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qp->drv_priv = priv;
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}
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/**
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* Get Infiniband queue pair driver-private data
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*
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* @v qp Queue pair
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* @ret priv Private data
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*/
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static inline __always_inline void *
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ib_qp_get_drvdata ( struct ib_queue_pair *qp ) {
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return qp->drv_priv;
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}
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/**
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* Set Infiniband queue pair owner-private data
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*
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* @v qp Queue pair
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* @v priv Private data
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*/
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static inline __always_inline void
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ib_qp_set_ownerdata ( struct ib_queue_pair *qp, void *priv ) {
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qp->owner_priv = priv;
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}
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/**
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* Get Infiniband queue pair owner-private data
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*
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* @v qp Queue pair
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* @ret priv Private data
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*/
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static inline __always_inline void *
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ib_qp_get_ownerdata ( struct ib_queue_pair *qp ) {
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return qp->owner_priv;
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}
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/**
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* Set Infiniband completion queue driver-private data
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*
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* @v cq Completion queue
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* @v priv Private data
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*/
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static inline __always_inline void
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ib_cq_set_drvdata ( struct ib_completion_queue *cq, void *priv ) {
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cq->drv_priv = priv;
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}
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/**
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* Get Infiniband completion queue driver-private data
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*
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* @v cq Completion queue
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* @ret priv Private data
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*/
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static inline __always_inline void *
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ib_cq_get_drvdata ( struct ib_completion_queue *cq ) {
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return cq->drv_priv;
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}
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/**
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* Set Infiniband device driver-private data
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*
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* @v ibdev Infiniband device
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* @v priv Private data
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*/
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static inline __always_inline void
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ib_set_drvdata ( struct ib_device *ibdev, void *priv ) {
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ibdev->drv_priv = priv;
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}
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/**
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* Get Infiniband device driver-private data
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*
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* @v ibdev Infiniband device
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* @ret priv Private data
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*/
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static inline __always_inline void *
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ib_get_drvdata ( struct ib_device *ibdev ) {
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return ibdev->drv_priv;
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}
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#endif /* _IPXE_INFINIBAND_H */
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