From: Rao Shoaib Date: Tue, 14 Jan 2020 00:41:20 +0000 (-0800) Subject: RDMA/rxe: Compute the maximum sges and inline size based on the WQE size X-Git-Tag: v5.10.7~3326^2~30 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=363824f92a9259b025f05ab038eb47224377f9e9;p=platform%2Fkernel%2Flinux-rpi.git RDMA/rxe: Compute the maximum sges and inline size based on the WQE size The SGE buffer size and max_inline data should be derived from the size of the WQE. Each value individually sets the WQE size, so compute the actual sizes based on the actual WQE size and configure the QP with the maximums. Also fix the missing return of the actual maximum capability to the caller. Link: https://lore.kernel.org/r/1578962480-17814-3-git-send-email-rao.shoaib@oracle.com Signed-off-by: Rao Shoaib Reviewed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c index e2c6d1c..ec21f61 100644 --- a/drivers/infiniband/sw/rxe/rxe_qp.c +++ b/drivers/infiniband/sw/rxe/rxe_qp.c @@ -237,19 +237,17 @@ static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp, */ qp->src_port = RXE_ROCE_V2_SPORT + (hash_32_generic(qp_num(qp), 14) & 0x3fff); - qp->sq.max_wr = init->cap.max_send_wr; - qp->sq.max_sge = init->cap.max_send_sge; - qp->sq.max_inline = init->cap.max_inline_data; - wqe_size = max_t(int, sizeof(struct rxe_send_wqe) + - qp->sq.max_sge * sizeof(struct ib_sge), - sizeof(struct rxe_send_wqe) + - qp->sq.max_inline); + /* These caps are limited by rxe_qp_chk_cap() done by the caller */ + wqe_size = max_t(int, init->cap.max_send_sge * sizeof(struct ib_sge), + init->cap.max_inline_data); + qp->sq.max_sge = init->cap.max_send_sge = + wqe_size / sizeof(struct ib_sge); + qp->sq.max_inline = init->cap.max_inline_data = wqe_size; + wqe_size += sizeof(struct rxe_send_wqe); - qp->sq.queue = rxe_queue_init(rxe, - &qp->sq.max_wr, - wqe_size); + qp->sq.queue = rxe_queue_init(rxe, &qp->sq.max_wr, wqe_size); if (!qp->sq.queue) return -ENOMEM;