ipath_qp.c File Reference

#include <linux/err.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include "ipath_verbs.h"
#include "ipath_kernel.h"

Go to the source code of this file.

Macros
#define	BITS_PER_PAGE   (PAGE_SIZE*BITS_PER_BYTE)
#define	BITS_PER_PAGE_MASK   (BITS_PER_PAGE-1)
#define	mk_qpn(qpt, map, off)
#define	find_next_offset(map, off)

Functions
unsigned	ipath_free_all_qps (struct ipath_qp_table *qpt)
struct ipath_qp *	ipath_lookup_qpn (struct ipath_qp_table *qpt, u32 qpn)
int	ipath_error_qp (struct ipath_qp *qp, enum ib_wc_status err)
int	ipath_modify_qp (struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata)
int	ipath_query_qp (struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr)
__be32	ipath_compute_aeth (struct ipath_qp *qp)
struct ib_qp *	ipath_create_qp (struct ib_pd *ibpd, struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
int	ipath_destroy_qp (struct ib_qp *ibqp)
int	ipath_init_qp_table (struct ipath_ibdev *idev, int size)
void	ipath_get_credit (struct ipath_qp *qp, u32 aeth)

Macro Definition Documentation

#define BITS_PER_PAGE   (PAGE_SIZE*BITS_PER_BYTE)

Definition at line 42 of file ipath_qp.c.

#define BITS_PER_PAGE_MASK   (BITS_PER_PAGE-1)

Definition at line 43 of file ipath_qp.c.

#define find_next_offset	(		map,
			off
	)

Value:

find_next_zero_bit((map)->page, \
                              BITS_PER_PAGE, off)

Definition at line 46 of file ipath_qp.c.

#define mk_qpn	(		qpt,
			map,
			off
	)

Value:

(((map) - (qpt)->map) * BITS_PER_PAGE + \
                 (off))

Definition at line 44 of file ipath_qp.c.

Function Documentation

__be32 ipath_compute_aeth

(

struct ipath_qp *

qp

)

ipath_compute_aeth - compute the AETH (syndrome + MSN) : the queue pair to compute the AETH for

Returns the AETH.

Definition at line 677 of file ipath_qp.c.

struct ib_qp* ipath_create_qp ( struct ib_pd *  ibpd, struct ib_qp_init_attr *  init_attr, struct ib_udata *  udata  )

read

ipath_create_qp - create a queue pair for a device : the protection domain who's device we create the queue pair for : the attributes of the queue pair : unused by InfiniPath

Returns the queue pair on success, otherwise returns an errno.

Called by the ib_create_qp() core verbs function.

Definition at line 741 of file ipath_qp.c.

int ipath_destroy_qp

(

struct ib_qp *

ibqp

)

ipath_destroy_qp - destroy a queue pair : the queue pair to destroy

Returns 0 on success.

Note that this can be called while the QP is actively sending or receiving!

Definition at line 962 of file ipath_qp.c.

int ipath_error_qp	(	struct ipath_qp *	qp,
		enum ib_wc_status	err
	)

ipath_error_qp - put a QP into the error state : the QP to put into the error state : the receive completion error to signal if a RWQE is active

Flushes both send and receive work queues. Returns true if last WQE event should be generated. The QP s_lock should be held and interrupts disabled. If we are already in error state, just return.

Definition at line 377 of file ipath_qp.c.

unsigned ipath_free_all_qps

(

struct ipath_qp_table *

qpt

)

ipath_free_all_qps - check for QPs still in use : the QP table to empty

There should not be any QPs still in use. Free memory for table.

Definition at line 271 of file ipath_qp.c.

void ipath_get_credit	(	struct ipath_qp *	qp,
		u32	aeth
	)

ipath_get_credit - flush the send work queue of a QP : the qp who's send work queue to flush : the Acknowledge Extended Transport Header

The QP s_lock should be held.

Definition at line 1055 of file ipath_qp.c.

int ipath_init_qp_table	(	struct ipath_ibdev *	idev,
		int	size
	)

ipath_init_qp_table - initialize the QP table for a device : the device who's QP table we're initializing : the size of the QP table

Returns 0 on success, otherwise returns an errno.

Definition at line 1022 of file ipath_qp.c.

struct ipath_qp* ipath_lookup_qpn ( struct ipath_qp_table *  qpt, u32  qpn  )

read

ipath_lookup_qpn - return the QP with the given QPN : the QP table : the QP number to look up

The caller is responsible for decrementing the QP reference count when done.

Definition at line 301 of file ipath_qp.c.

int ipath_modify_qp	(	struct ib_qp *	ibqp,
		struct ib_qp_attr *	attr,
		int	attr_mask,
		struct ib_udata *	udata
	)

ipath_modify_qp - modify the attributes of a queue pair : the queue pair who's attributes we're modifying : the new attributes : the mask of attributes to modify : user data for ipathverbs.so

Returns 0 on success, otherwise returns an errno.

Definition at line 450 of file ipath_qp.c.

int ipath_query_qp	(	struct ib_qp *	ibqp,
		struct ib_qp_attr *	attr,
		int	attr_mask,
		struct ib_qp_init_attr *	init_attr
	)

Definition at line 621 of file ipath_qp.c.