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IB: Support ib_flow creation in drivers

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This patch considers the case that ib_flow is created by some device
driver with its specific parameters using the KABI infrastructure.

In that case both QP and ib_uflow_resources might not be applicable.
Downstream patches from this series use the above functionality.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas 2018-07-23 15:25:08 +03:00 committed by Jason Gunthorpe
parent fd44e3853c
commit 6cd080a674
3 changed files with 8 additions and 2 deletions
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4
drivers/infiniband/core/uverbs_cmd.c
View file

@ -2771,6 +2771,9 @@ void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
{
unsigned int i;
if (!uflow_res)
return;
for (i = 0; i < uflow_res->collection_num; i++)
atomic_dec(&uflow_res->collection[i]->usecnt);
@ -3585,6 +3588,7 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
}
atomic_inc(&qp->usecnt);
flow_id->qp = qp;
flow_id->device = qp->device;
flow_id->uobject = uobj;
uobj->object = flow_id;
uflow = container_of(uobj, typeof(*uflow), uobject);

5
drivers/infiniband/core/uverbs_std_types.c
View file

@ -54,9 +54,10 @@ static int uverbs_free_flow(struct ib_uobject *uobject,
struct ib_qp *qp = flow->qp;
int ret;
ret = qp->device->destroy_flow(flow);
ret = flow->device->destroy_flow(flow);
if (!ret) {
atomic_dec(&qp->usecnt);
if (qp)
atomic_dec(&qp->usecnt);
ib_uverbs_flow_resources_free(uflow->resources);
}

1
include/rdma/ib_verbs.h
View file

@ -2081,6 +2081,7 @@ struct ib_flow_attr {
struct ib_flow {
struct ib_qp *qp;
struct ib_device *device;
struct ib_uobject *uobject;
};