netdev - [PATCH mlx5-next v1 2/4] net/mlx5: Change define name for 0x100 lkey value

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Message-Id: <70235ec1155c3bc044a2b5503d40f4f2bfb18e92.1672917578.git.leonro@nvidia.com>
Date:   Thu,  5 Jan 2023 13:23:46 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     Or Har-Toov <ohartoov@...dia.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>, linux-rdma@...r.kernel.org,
        Michael Guralnik <michaelgur@...dia.com>,
        netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [PATCH mlx5-next v1 2/4] net/mlx5: Change define name for 0x100 lkey value

From: Or Har-Toov <ohartoov@...dia.com>

Change define of 0x100 lkey value from MLX5_INVALID_LKEY to be
MLX5_TERMINATE_SCATTER_LIST_LKEY as 0x100 is the value of
terminate_scatter_list_mkey.

Signed-off-by: Or Har-Toov <ohartoov@...dia.com>
Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/infiniband/hw/mlx5/odp.c                  | 10 +++++-----
 drivers/infiniband/hw/mlx5/srq.c                  |  2 +-
 drivers/infiniband/hw/mlx5/wr.c                   |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |  3 ++-
 include/linux/mlx5/qp.h                           |  2 +-
 5 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index e6e021af6aa9..b4ebeadce67c 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -986,7 +986,7 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 {
 	int ret = 0, npages = 0;
 	u64 io_virt;
-	u32 key;
+	__be32 key;
 	u32 byte_count;
 	size_t bcnt;
 	int inline_segment;
@@ -1000,7 +1000,7 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 		struct mlx5_wqe_data_seg *dseg = wqe;
 
 		io_virt = be64_to_cpu(dseg->addr);
-		key = be32_to_cpu(dseg->lkey);
+		key = dseg->lkey;
 		byte_count = be32_to_cpu(dseg->byte_count);
 		inline_segment = !!(byte_count &  MLX5_INLINE_SEG);
 		bcnt	       = byte_count & ~MLX5_INLINE_SEG;
@@ -1014,8 +1014,8 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 		}
 
 		/* receive WQE end of sg list. */
-		if (receive_queue && bcnt == 0 && key == MLX5_INVALID_LKEY &&
-		    io_virt == 0)
+		if (receive_queue && bcnt == 0 &&
+		    key == MLX5_TERMINATE_SCATTER_LIST_LKEY && io_virt == 0)
 			break;
 
 		if (!inline_segment && total_wqe_bytes) {
@@ -1034,7 +1034,7 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 			continue;
 		}
 
-		ret = pagefault_single_data_segment(dev, NULL, key,
+		ret = pagefault_single_data_segment(dev, NULL, be32_to_cpu(key),
 						    io_virt, bcnt,
 						    &pfault->bytes_committed,
 						    bytes_mapped);
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index 757756c50cc6..bcceb14a07f9 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -447,7 +447,7 @@ int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
 
 		if (i < srq->msrq.max_avail_gather) {
 			scat[i].byte_count = 0;
-			scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
+			scat[i].lkey = MLX5_TERMINATE_SCATTER_LIST_LKEY;
 			scat[i].addr       = 0;
 		}
 	}
diff --git a/drivers/infiniband/hw/mlx5/wr.c b/drivers/infiniband/hw/mlx5/wr.c
index 855f3f4fefad..bc44551493e2 100644
--- a/drivers/infiniband/hw/mlx5/wr.c
+++ b/drivers/infiniband/hw/mlx5/wr.c
@@ -1252,7 +1252,7 @@ int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
 
 		if (i < qp->rq.max_gs) {
 			scat[i].byte_count = 0;
-			scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
+			scat[i].lkey = MLX5_TERMINATE_SCATTER_LIST_LKEY;
 			scat[i].addr       = 0;
 		}
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 8d36e2de53a9..c76f15505a76 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -825,7 +825,8 @@ static int mlx5e_alloc_rq(struct mlx5e_params *params,
 			/* check if num_frags is not a pow of two */
 			if (rq->wqe.info.num_frags < (1 << rq->wqe.info.log_num_frags)) {
 				wqe->data[f].byte_count = 0;
-				wqe->data[f].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
+				wqe->data[f].lkey =
+					MLX5_TERMINATE_SCATTER_LIST_LKEY;
 				wqe->data[f].addr = 0;
 			}
 		}
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index 4657d5c54abe..df55fbb65717 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -36,7 +36,7 @@
 #include <linux/mlx5/device.h>
 #include <linux/mlx5/driver.h>
 
-#define MLX5_INVALID_LKEY	0x100
+#define MLX5_TERMINATE_SCATTER_LIST_LKEY cpu_to_be32(0x100)
 /* UMR (3 WQE_BB's) + SIG (3 WQE_BB's) + PSV (mem) + PSV (wire) */
 #define MLX5_SIG_WQE_SIZE	(MLX5_SEND_WQE_BB * 8)
 #define MLX5_DIF_SIZE		8
-- 
2.38.1