Re: [PATCH rdma-next v2 1/4] RDMA/mana_ib: Introduce helpers to create and destroy mana queues

Zhu Yanjun
2024-03-21T06:37:56Z

在 2024/3/19 18:00, Konstantin Taranov 写道:
> From: Konstantin Taranov <kotaranov@microsoft.com>
>
> Intoduce helpers to work with mana ib queues (struct mana_ib_queue).
> A queue always consists of umem, gdma_region, and id.
> A queue can become a WQ or a CQ.
>
> Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
> ---
> drivers/infiniband/hw/mana/main.c | 43 ++++++++++++++++++++++++++++
> drivers/infiniband/hw/mana/mana_ib.h | 10 +++++++
> 2 files changed, 53 insertions(+)
>
> diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
> index 71e33feee..4524c6b80 100644
> --- a/drivers/infiniband/hw/mana/main.c
> +++ b/drivers/infiniband/hw/mana/main.c
> @@ -237,6 +237,49 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
> ibdev_dbg(ibdev, "Failed to destroy doorbell page %d\n", ret);
> }
>
> +int mana_ib_create_queue(struct mana_ib_dev *mdev, u64 addr, u32 size,
> + struct mana_ib_queue *queue)
> +{
> + struct ib_umem *umem;
> + int err;
> +
> + queue->umem = NULL;
> + queue->id = INVALID_QUEUE_ID;
> + queue->gdma_region = GDMA_INVALID_DMA_REGION;
> +
> + umem = ib_umem_get(&mdev->ib_dev, addr, size, IB_ACCESS_LOCAL_WRITE);
> + if (IS_ERR(umem)) {
> + err = PTR_ERR(umem);
> + ibdev_dbg(&mdev->ib_dev, "Failed to get umem, %d\n", err);
> + return err;
> + }
> +
> + err = mana_ib_create_zero_offset_dma_region(mdev, umem, &queue->gdma_region);
> + if (err) {
> + ibdev_dbg(&mdev->ib_dev, "Failed to create dma region, %d\n", err);
> + goto free_umem;
> + }
> + queue->umem = umem;
> +
> + ibdev_dbg(&mdev->ib_dev,
> + "create_dma_region ret %d gdma_region 0x%llx\n",
> + err, queue->gdma_region);
> +
> + return 0;
> +free_umem:
> + ib_umem_release(umem);
> + return err;
> +}
> +
> +void mana_ib_destroy_queue(struct mana_ib_dev *mdev, struct mana_ib_queue *queue)
> +{
> + /* Ignore return code as there is not much we can do about it.
> + * The error message is printed inside.
> + */
> + mana_ib_gd_destroy_dma_region(mdev, queue->gdma_region);

Thanks a lot. I am fine with it.

Zhu Yanjun

> + ib_umem_release(queue->umem);
> +}
> +
> static int
> mana_ib_gd_first_dma_region(struct mana_ib_dev *dev,
> struct gdma_context *gc,
> diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
> index f83390eeb..859fd3bfc 100644
> --- a/drivers/infiniband/hw/mana/mana_ib.h
> +++ b/drivers/infiniband/hw/mana/mana_ib.h
> @@ -45,6 +45,12 @@ struct mana_ib_adapter_caps {
> u32 max_inline_data_size;
> };
>
> +struct mana_ib_queue {
> + struct ib_umem *umem;
> + u64 gdma_region;
> + u64 id;
> +};
> +
> struct mana_ib_dev {
> struct ib_device ib_dev;
> struct gdma_dev *gdma_dev;
> @@ -169,6 +175,10 @@ int mana_ib_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem,
> int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev,
> mana_handle_t gdma_region);
>
> +int mana_ib_create_queue(struct mana_ib_dev *mdev, u64 addr, u32 size,
> + struct mana_ib_queue *queue);
> +void mana_ib_destroy_queue(struct mana_ib_dev *mdev, struct mana_ib_queue *queue);
> +
> struct ib_wq *mana_ib_create_wq(struct ib_pd *pd,
> struct ib_wq_init_attr *init_attr,
> struct ib_udata *udata);