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RDMA/mlx5: Get XRCD number directly for the internal use

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The mlx5_ib creates XRC domain and uses for creating internal SRQ.
However all that is needed is XRCD number and not full blown ib_xrcd
objects.

Update the code to get and store the number only.

Link: https://lore.kernel.org/r/20200706122716.647338-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky
2020-07-06 15:27:14 +03:00
committed by Jason Gunthorpe
parent 42a3b15396
commit f4375443b7
4 changed files with 23 additions and 34 deletions
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39
drivers/infiniband/hw/mlx5/main.c
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@@ -5003,6 +5003,9 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
dev = container_of(devr, struct mlx5_ib_dev, devr);
ibdev = &dev->ib_dev;
if (!MLX5_CAP_GEN(dev->mdev, xrc))
return -EOPNOTSUPP;
mutex_init(&devr->mutex);
devr->p0 = rdma_zalloc_drv_obj(ibdev, ib_pd);
@@ -5030,34 +5033,19 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
if (ret)
goto err_create_cq;
devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL);
if (IS_ERR(devr->x0)) {
ret = PTR_ERR(devr->x0);
ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn0, 0);
if (ret)
goto error2;
}
devr->x0->device = &dev->ib_dev;
devr->x0->inode = NULL;
atomic_set(&devr->x0->usecnt, 0);
mutex_init(&devr->x0->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL);
if (IS_ERR(devr->x1)) {
ret = PTR_ERR(devr->x1);
ret = mlx5_cmd_xrcd_alloc(dev->mdev, &devr->xrcdn1, 0);
if (ret)
goto error3;
}
devr->x1->device = &dev->ib_dev;
devr->x1->inode = NULL;
atomic_set(&devr->x1->usecnt, 0);
mutex_init(&devr->x1->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
memset(&attr, 0, sizeof(attr));
attr.attr.max_sge = 1;
attr.attr.max_wr = 1;
attr.srq_type = IB_SRQT_XRC;
attr.ext.cq = devr->c0;
attr.ext.xrc.xrcd = devr->x0;
devr->s0 = rdma_zalloc_drv_obj(ibdev, ib_srq);
if (!devr->s0) {
@@ -5068,13 +5056,11 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
devr->s0->device = &dev->ib_dev;
devr->s0->pd = devr->p0;
devr->s0->srq_type = IB_SRQT_XRC;
devr->s0->ext.xrc.xrcd = devr->x0;
devr->s0->ext.cq = devr->c0;
ret = mlx5_ib_create_srq(devr->s0, &attr, NULL);
if (ret)
goto err_create;
atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
atomic_inc(&devr->s0->ext.cq->usecnt);
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s0->usecnt, 0);
@@ -5116,9 +5102,9 @@ error5:
err_create:
kfree(devr->s0);
error4:
mlx5_ib_dealloc_xrcd(devr->x1, NULL);
mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0);
error3:
mlx5_ib_dealloc_xrcd(devr->x0, NULL);
mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0);
error2:
mlx5_ib_destroy_cq(devr->c0, NULL);
err_create_cq:
@@ -5132,14 +5118,17 @@ error0:
static void destroy_dev_resources(struct mlx5_ib_resources *devr)
{
struct mlx5_ib_dev *dev;
int port;
dev = container_of(devr, struct mlx5_ib_dev, devr);
mlx5_ib_destroy_srq(devr->s1, NULL);
kfree(devr->s1);
mlx5_ib_destroy_srq(devr->s0, NULL);
kfree(devr->s0);
mlx5_ib_dealloc_xrcd(devr->x0, NULL);
mlx5_ib_dealloc_xrcd(devr->x1, NULL);
mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn1, 0);
mlx5_cmd_xrcd_dealloc(dev->mdev, devr->xrcdn0, 0);
mlx5_ib_destroy_cq(devr->c0, NULL);
kfree(devr->c0);
mlx5_ib_dealloc_pd(devr->p0, NULL);