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IB/hfi1: Move receive work queue struct into uapi directory

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The rvt_rwqe and rvt_rwq struct elements are shared between rdmavt and the
providers but are not in uapi directory.  As per the comment in
https://marc.info/?l=linux-rdma&m=152296522708522&w=2, The hfi1 driver and
the rdma core driver are not using shared structures in the uapi
directory.

Move rvt_rwqe and rvt_rwq struct into rvt-abi.h header in uapi directory.

Reviewed-by: Mike Marciniszyn <[email protected]>
Reviewed-by: Michael J. Ruhl <[email protected]>
Signed-off-by: Kamenee Arumugam <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
This commit is contained in:
Kamenee Arumugam 2019-06-28 14:04:24 -04:00 • committed by Jason Gunthorpe
commit dabac6e460
6 changed files with 212 additions and 92 deletions
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52
include/rdma/rdmavt_qp.h
View file

@ -52,6 +52,7 @@
#include <rdma/ib_pack.h>
#include <rdma/ib_verbs.h>
#include <rdma/rdmavt_cq.h>
#include <rdma/rvt-abi.h>
/*
* Atomic bit definitions for r_aflags.
*/
@ -177,33 +178,27 @@ struct rvt_swqe {
struct rvt_sge sg_list[0];
};
/*
* Receive work request queue entry.
* The size of the sg_list is determined when the QP (or SRQ) is created
* and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
/**
* struct rvt_krwq - kernel struct receive work request
* @head: index of next entry to fill
* @tail: index of next entry to pull
* @count: count is aproximate of total receive enteries posted
* @rvt_rwqe: struct of receive work request queue entry
*
* This structure is used to contain the head pointer,
* tail pointer and receive work queue entries for kernel
* mode user.
*/
struct rvt_rwqe {
u64 wr_id;
u8 num_sge;
struct ib_sge sg_list[0];
};
/*
* This structure is used to contain the head pointer, tail pointer,
* and receive work queue entries as a single memory allocation so
* it can be mmap'ed into user space.
* Note that the wq array elements are variable size so you can't
* just index into the array to get the N'th element;
* use get_rwqe_ptr() instead.
*/
struct rvt_rwq {
struct rvt_krwq {
u32 head; /* new work requests posted to the head */
u32 tail; /* receives pull requests from here. */
struct rvt_rwqe wq[0];
struct rvt_rwqe *curr_wq;
struct rvt_rwqe wq[];
};
struct rvt_rq {
struct rvt_rwq *wq;
struct rvt_krwq *kwq;
u32 size; /* size of RWQE array */
u8 max_sge;
/* protect changes in this struct */
@ -472,7 +467,7 @@ static inline struct rvt_swqe *rvt_get_swqe_ptr(struct rvt_qp *qp,
static inline struct rvt_rwqe *rvt_get_rwqe_ptr(struct rvt_rq *rq, unsigned n)
{
return (struct rvt_rwqe *)
((char *)rq->wq->wq +
((char *)rq->kwq->curr_wq +
(sizeof(struct rvt_rwqe) +
rq->max_sge * sizeof(struct ib_sge)) * n);
}
@ -852,6 +847,21 @@ static inline u32 ib_cq_head(struct ib_cq *send_cq)
ibcq_to_rvtcq(send_cq)->kqueue->head;
}
/**
* rvt_free_rq - free memory allocated for rvt_rq struct
* @rvt_rq: request queue data structure
*
* This function should only be called if the rvt_mmap_info()
* has not succeeded.
*/
static inline void rvt_free_rq(struct rvt_rq *rq)
{
kvfree(rq->kwq);
rq->kwq = NULL;
vfree(rq->wq);
rq->wq = NULL;
}
struct rvt_qp_iter *rvt_qp_iter_init(struct rvt_dev_info *rdi,
u64 v,
void (*cb)(struct rvt_qp *qp, u64 v));