summaryrefslogtreecommitdiff
path: root/include/uapi/rdma
diff options
context:
space:
mode:
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/uapi/rdma
parent239b0e52d8aa64d2559c672fd8c29cf1fffc3ec7 (diff)
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/uapi/rdma')
-rw-r--r--include/uapi/rdma/rvt-abi.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/uapi/rdma/rvt-abi.h b/include/uapi/rdma/rvt-abi.h
index 8e5f7e0c15fe..d2e35d24f1a9 100644
--- a/include/uapi/rdma/rvt-abi.h
+++ b/include/uapi/rdma/rvt-abi.h
@@ -10,6 +10,7 @@
#include <linux/types.h>
#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_verbs.h>
#ifndef RDMA_ATOMIC_UAPI
#define RDMA_ATOMIC_UAPI(_type, _name) struct{ _type val; } _name
#endif
@@ -29,4 +30,32 @@ struct rvt_cq_wc {
struct ib_uverbs_wc uqueue[];
};
+/*
+ * 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_rwqe {
+ __u64 wr_id;
+ __u8 num_sge;
+ __u8 padding[7];
+ struct ib_sge sg_list[];
+};
+
+/*
+ * 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() for user space and rvt_get_rwqe_ptr()
+ * for kernel space.
+ */
+struct rvt_rwq {
+ /* new work requests posted to the head */
+ RDMA_ATOMIC_UAPI(__u32, head);
+ /* receives pull requests from here. */
+ RDMA_ATOMIC_UAPI(__u32, tail);
+ struct rvt_rwqe wq[];
+};
#endif /* RVT_ABI_USER_H */