From: Tal Shnaiderman <talshn@nvidia.com>
Date: Mon, 28 Dec 2020 09:54:30 +0000 (+0200)
Subject: common/mlx5: add UMEM reg/dereg functions on Windows
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=1969ee424405;p=dpdk.git

common/mlx5: add UMEM reg/dereg functions on Windows

Implement Windows API mlx5_os_umem_reg() and mlx5_os_umem_dereg(). They
are equivalent to the Linux implementation.

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---

diff --git a/drivers/common/mlx5/rte_common_mlx5_exports.def b/drivers/common/mlx5/rte_common_mlx5_exports.def
index 93203ea034..648d03ac60 100644
--- a/drivers/common/mlx5/rte_common_mlx5_exports.def
+++ b/drivers/common/mlx5/rte_common_mlx5_exports.def
@@ -64,3 +64,5 @@ EXPORTS
 
 	mlx5_os_alloc_pd
 	mlx5_os_dealloc_pd
+	mlx5_os_umem_reg
+	mlx5_os_umem_dereg
diff --git a/drivers/common/mlx5/windows/mlx5_common_os.c b/drivers/common/mlx5/windows/mlx5_common_os.c
index 9ca850e26b..50617e4bc4 100644
--- a/drivers/common/mlx5/windows/mlx5_common_os.c
+++ b/drivers/common/mlx5/windows/mlx5_common_os.c
@@ -69,3 +69,63 @@ mlx5_os_dealloc_pd(void *pd)
 	mlx5_free(pd);
 	return 0;
 }
+
+/**
+ * Register umem.
+ *
+ * @param[in] ctx
+ *   Pointer to context.
+ * @param[in] addr
+ *   Pointer to memory start address.
+ * @param[in] size
+ *   Size of the memory to register.
+ * @param[out] access
+ *   UMEM access type
+ *
+ * @return
+ *   umem on successful registration, NULL and errno otherwise
+ */
+void *
+mlx5_os_umem_reg(void *ctx, void *addr, size_t size, uint32_t access)
+{
+	struct mlx5_devx_umem *umem;
+
+	umem = mlx5_malloc(MLX5_MEM_ZERO,
+		(sizeof(*umem)), 0, SOCKET_ID_ANY);
+	if (!umem) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	umem->umem_hdl = mlx5_glue->devx_umem_reg(ctx, addr, size, access,
+		&umem->umem_id);
+	if (!umem->umem_hdl) {
+		mlx5_free(umem);
+		return NULL;
+	}
+	umem->addr = addr;
+	return umem;
+}
+
+/**
+ * Deregister umem.
+ *
+ * @param[in] pumem
+ *   Pointer to umem.
+ *
+ * @return
+ *   0 on successful release, negative number otherwise
+ */
+int
+mlx5_os_umem_dereg(void *pumem)
+{
+	struct mlx5_devx_umem *umem;
+	int err = 0;
+
+	if (!pumem)
+		return err;
+	umem = pumem;
+	if (umem->umem_hdl)
+		err = mlx5_glue->devx_umem_dereg(umem->umem_hdl);
+	mlx5_free(umem);
+	return err;
+}
diff --git a/drivers/common/mlx5/windows/mlx5_common_os.h b/drivers/common/mlx5/windows/mlx5_common_os.h
index f47351ec41..decb5acd45 100644
--- a/drivers/common/mlx5/windows/mlx5_common_os.h
+++ b/drivers/common/mlx5/windows/mlx5_common_os.h
@@ -142,4 +142,6 @@ mlx5_os_get_umem_id(void *umem)
 
 void *mlx5_os_alloc_pd(void *ctx);
 int mlx5_os_dealloc_pd(void *pd);
+void *mlx5_os_umem_reg(void *ctx, void *addr, size_t size, uint32_t access);
+int mlx5_os_umem_dereg(void *pumem);
 #endif /* RTE_PMD_MLX5_COMMON_OS_H_ */