ib_cm.h File Reference

Infiniband communication management. More...

#include <gpxe/infiniband.h>
#include <gpxe/retry.h>

Go to the source code of this file.

Data Structures
struct	ib_connection_operations
	Infiniband connection operations. More...
struct	ib_connection
	An Infiniband connection. More...
Functions
	FILE_LICENCE (GPL2_OR_LATER)
struct ib_connection *	ib_create_conn (struct ib_device *ibdev, struct ib_queue_pair *qp, struct ib_gid *dgid, struct ib_gid_half *service_id, void *req_private_data, size_t req_private_data_len, struct ib_connection_operations *op)
	Create connection to remote QP.
void	ib_destroy_conn (struct ib_device *ibdev, struct ib_queue_pair *qp, struct ib_connection *conn)

---

Detailed Description

Infiniband communication management.

Definition in file ib_cm.h.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

struct ib_connection* ib_create_conn	(	struct ib_device *	ibdev,
		struct ib_queue_pair *	qp,
		struct ib_gid *	dgid,
		struct ib_gid_half *	service_id,
		void *	private_data,
		size_t	private_data_len,
		struct ib_connection_operations *	op
	)			[read]

Create connection to remote QP.

Parameters:

	ibdev	Infiniband device
	qp	Queue pair
	dgid	Target GID
	service_id	Target service ID
	private_data	Connection request private data
	private_data_len	Length of connection request private data
	op	Connection operations

Return values:

conn

Connection

Definition at line 349 of file ib_cm.c.

References ib_queue_pair::av, DBGC, ib_gid_half::dwords, ib_gid::dwords, free(), ib_address_vector::gid, ib_address_vector::gid_present, ib_create_path(), ib_destroy_path(), ib_path_set_ownerdata(), ib_connection::ibdev, ib_connection::list, list_add, ib_connection::local_id, memcpy, memset(), ntohl, NULL, ib_connection::op, ib_connection::path, ib_connection::private_data, ib_connection::private_data_len, ib_connection::qp, ib_queue_pair::qpn, random(), ib_connection::service_id, ib_gid_half::u, ib_gid::u, and zalloc().

Referenced by ib_cmrc_xfer_deliver_iob().

                                                       {
        struct ib_connection *conn;

        /* Allocate and initialise request */
        conn = zalloc ( sizeof ( *conn ) + private_data_len );
        if ( ! conn )
                goto err_alloc_conn;
        conn->ibdev = ibdev;
        conn->qp = qp;
        memset ( &qp->av, 0, sizeof ( qp->av ) );
        qp->av.gid_present = 1;
        memcpy ( &qp->av.gid, dgid, sizeof ( qp->av.gid ) );
        conn->local_id = random();
        memcpy ( &conn->service_id, service_id, sizeof ( conn->service_id ) );
        conn->op = op;
        conn->private_data_len = private_data_len;
        memcpy ( &conn->private_data, private_data, private_data_len );

        /* Create path */
        conn->path = ib_create_path ( ibdev, &qp->av, &ib_cm_path_op );
        if ( ! conn->path )
                goto err_create_path;
        ib_path_set_ownerdata ( conn->path, conn );

        /* Add to list of connections */
        list_add ( &conn->list, &ib_cm_conns );

        DBGC ( conn, "CM %p created for IBDEV %p QPN %lx\n",
               conn, ibdev, qp->qpn );
        DBGC ( conn, "CM %p connecting to %08x:%08x:%08x:%08x %08x:%08x\n",
               conn, ntohl ( dgid->u.dwords[0] ), ntohl ( dgid->u.dwords[1] ),
               ntohl ( dgid->u.dwords[2] ), ntohl ( dgid->u.dwords[3] ),
               ntohl ( service_id->u.dwords[0] ),
               ntohl ( service_id->u.dwords[1] ) );

        return conn;

        ib_destroy_path ( ibdev, conn->path );
 err_create_path:
        free ( conn );
 err_alloc_conn:
        return NULL;
}

void ib_destroy_conn	(	struct ib_device *	ibdev,
		struct ib_queue_pair *	qp,
		struct ib_connection *	conn
	)