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[infiniband] Maintain queue fill level as a property of a work queue

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Both queue owners and drivers often need to keep track of the fill
level, so let's make it a generic property.
This commit is contained in:
Michael Brown
2008-10-03 03:04:21 +01:00
parent d9751edafa
commit 0de5f7af6d
3 changed files with 110 additions and 70 deletions
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74
src/include/gpxe/infiniband.h
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@@ -66,6 +66,8 @@ struct ib_work_queue {
struct list_head list;
/** Number of work queue entries */
unsigned int num_wqes;
/** Number of occupied work queue entries */
unsigned int fill;
/** Next work queue entry index
*
* This is the index of the next entry to be filled (i.e. the
@@ -355,70 +357,24 @@ extern void ib_destroy_qp ( struct ib_device *ibdev,
struct ib_queue_pair *qp );
extern struct ib_work_queue * ib_find_wq ( struct ib_completion_queue *cq,
unsigned long qpn, int is_send );
extern int ib_post_send ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_address_vector *av,
struct io_buffer *iobuf );
extern int ib_post_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct io_buffer *iobuf );
extern void ib_complete_send ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf );
extern void ib_complete_recv ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf );
extern struct ib_device * alloc_ibdev ( size_t priv_size );
extern int register_ibdev ( struct ib_device *ibdev );
extern void unregister_ibdev ( struct ib_device *ibdev );
extern void ib_link_state_changed ( struct ib_device *ibdev );
/**
* Post send work queue entry
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v av Address vector
* @v iobuf I/O buffer
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
ib_post_send ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_address_vector *av, struct io_buffer *iobuf ) {
return ibdev->op->post_send ( ibdev, qp, av, iobuf );
}
/**
* Post receive work queue entry
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v iobuf I/O buffer
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
ib_post_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct io_buffer *iobuf ) {
return ibdev->op->post_recv ( ibdev, qp, iobuf );
}
/**
* Complete send work queue entry
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v completion Completion
* @v iobuf I/O buffer
*/
static inline __attribute__ (( always_inline )) void
ib_complete_send ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf ) {
return qp->send.cq->complete_send ( ibdev, qp, completion, iobuf );
}
/**
* Complete receive work queue entry
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v completion Completion
* @v iobuf I/O buffer
*/
static inline __attribute__ (( always_inline )) void
ib_complete_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_completion *completion,
struct io_buffer *iobuf ) {
return qp->recv.cq->complete_recv ( ibdev, qp, completion, iobuf );
}
/**
* Poll completion queue
*