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authorKamenee Arumugam <kamenee.arumugam@intel.com>2019-06-28 14:04:24 -0400
committerJason Gunthorpe <jgg@mellanox.com>2019-06-28 22:32:16 -0300
commitdabac6e460ce8473f1e685432a8ab7818d81a1f1 (patch)
tree28cdde61b881c5c06f4872aff07040d6c8b1c0f3 /include/rdma
parent239b0e52d8aa64d2559c672fd8c29cf1fffc3ec7 (diff)
downloadlinux-dabac6e460ce8473f1e685432a8ab7818d81a1f1.tar.bz2
IB/hfi1: Move receive work queue struct into uapi directory
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 <mike.marciniszyn@intel.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Kamenee Arumugam <kamenee.arumugam@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/rdmavt_qp.h52
1 files changed, 31 insertions, 21 deletions
diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h
index 7fcd687af278..ee55fd04f6da 100644
--- a/include/rdma/rdmavt_qp.h
+++ b/include/rdma/rdmavt_qp.h
@@ -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));