From: Kamenee Arumugam <kamenee.arumugam@xxxxxxxxx> The rvt_rwqe and rvt_rwq struct elements are shared between rdmavt and the providers but 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. Create rvt_krwq kernel struct to separate it from the user version. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx> Signed-off-by: Kamenee Arumugam <kamenee.arumugam@xxxxxxxxx> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx> --- include/rdma/rdmavt_qp.h | 26 +------------------------- include/uapi/rdma/rvt-abi.h | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 25 deletions(-) diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h index cbafb18..1ef17a6 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. */ @@ -177,31 +178,6 @@ 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_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 { - u32 head; /* new work requests posted to the head */ - u32 tail; /* receives pull requests from here. */ - struct rvt_rwqe wq[0]; -}; - struct rvt_rq { struct rvt_rwq *wq; u32 size; /* size of RWQE array */ diff --git a/include/uapi/rdma/rvt-abi.h b/include/uapi/rdma/rvt-abi.h index 9c3c7de..b8ec20f 100644 --- a/include/uapi/rdma/rvt-abi.h +++ b/include/uapi/rdma/rvt-abi.h @@ -27,4 +27,31 @@ struct rvt_cq_wc { struct ib_uverbs_wc uqueue[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_rwqe { + __u64 wr_id; + __u8 num_sge; + __u8 padding[7]; + 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 { + /* 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[0]; +}; #endif /* RVT_ABI_USER_H */
