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RDMA/core: Create clean QP creations interface for uverbs

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Unify create QP creation interface to make clean approach to create
XRC_TGT and regular QPs.

Link: https://lore.kernel.org/r/5cd50e7d8ad9112545a1a61dea62799a5cb3224a.1628014762.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky 2021-08-03 21:20:38 +03:00 committed by Jason Gunthorpe
parent 5507f67d08
commit d2b10794fc
4 changed files with 52 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/infiniband/core/core_priv.h
View File

@ -316,10 +316,11 @@ struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
void nldev_init(void);
void nldev_exit(void);
struct ib_qp *_ib_create_qp(struct ib_device *dev, struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct ib_udata *udata, struct ib_uqp_object *uobj,
const char *caller);
struct ib_qp *ib_create_qp_user(struct ib_device *dev, struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct ib_udata *udata,
struct ib_uqp_object *uobj, const char *caller);
void ib_qp_usecnt_inc(struct ib_qp *qp);
void ib_qp_usecnt_dec(struct ib_qp *qp);

13
drivers/infiniband/core/uverbs_cmd.c
View File

@ -1435,23 +1435,14 @@ static int create_qp(struct uverbs_attr_bundle *attrs,
attr.source_qpn = cmd->source_qpn;
}
if (cmd->qp_type == IB_QPT_XRC_TGT)
qp = ib_create_qp(pd, &attr);
else
qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj,
NULL);
qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj,
KBUILD_MODNAME);
if (IS_ERR(qp)) {
ret = PTR_ERR(qp);
goto err_put;
}
ib_qp_usecnt_inc(qp);
if (cmd->qp_type == IB_QPT_XRC_TGT) {
/* It is done in _ib_create_qp for other QP types */
qp->uobject = obj;
}
obj->uevent.uobject.object = qp;
obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
if (obj->uevent.event_file)

10
drivers/infiniband/core/uverbs_std_types_qp.c
View File

@ -248,12 +248,8 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QP_CREATE)(
set_caps(&attr, &cap, true);
mutex_init(&obj->mcast_lock);
if (attr.qp_type == IB_QPT_XRC_TGT)
qp = ib_create_qp(pd, &attr);
else
qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj,
NULL);
qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj,
KBUILD_MODNAME);
if (IS_ERR(qp)) {
ret = PTR_ERR(qp);
goto err_put;
@ -264,8 +260,6 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QP_CREATE)(
obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
uobject);
atomic_inc(&obj->uxrcd->refcnt);
/* It is done in _ib_create_qp for other QP types */
qp->uobject = obj;
}
obj->uevent.uobject.object = qp;

72
drivers/infiniband/core/verbs.c
View File

@ -1200,21 +1200,10 @@ static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp,
return qp;
}
/**
* _ib_create_qp - Creates a QP associated with the specified protection domain
* @dev: IB device
* @pd: The protection domain associated with the QP.
* @attr: A list of initial attributes required to create the
* QP. If QP creation succeeds, then the attributes are updated to
* the actual capabilities of the created QP.
* @udata: User data
* @uobj: uverbs obect
* @caller: caller's build-time module name
*/
struct ib_qp *_ib_create_qp(struct ib_device *dev, struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct ib_udata *udata, struct ib_uqp_object *uobj,
const char *caller)
static struct ib_qp *create_qp(struct ib_device *dev, struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct ib_udata *udata,
struct ib_uqp_object *uobj, const char *caller)
{
struct ib_udata dummy = {};
struct ib_qp *qp;
@ -1272,7 +1261,43 @@ err_create:
return ERR_PTR(ret);
}
EXPORT_SYMBOL(_ib_create_qp);
/**
* ib_create_qp_user - Creates a QP associated with the specified protection
* domain.
* @dev: IB device
* @pd: The protection domain associated with the QP.
* @attr: A list of initial attributes required to create the
* QP. If QP creation succeeds, then the attributes are updated to
* the actual capabilities of the created QP.
* @udata: User data
* @uobj: uverbs obect
* @caller: caller's build-time module name
*/
struct ib_qp *ib_create_qp_user(struct ib_device *dev, struct ib_pd *pd,
struct ib_qp_init_attr *attr,
struct ib_udata *udata,
struct ib_uqp_object *uobj, const char *caller)
{
struct ib_qp *qp, *xrc_qp;
if (attr->qp_type == IB_QPT_XRC_TGT)
qp = create_qp(dev, pd, attr, NULL, NULL, caller);
else
qp = create_qp(dev, pd, attr, udata, uobj, NULL);
if (attr->qp_type != IB_QPT_XRC_TGT || IS_ERR(qp))
return qp;
xrc_qp = create_xrc_qp_user(qp, attr);
if (IS_ERR(xrc_qp)) {
ib_destroy_qp(qp);
return xrc_qp;
}
xrc_qp->uobject = uobj;
return xrc_qp;
}
EXPORT_SYMBOL(ib_create_qp_user);
void ib_qp_usecnt_inc(struct ib_qp *qp)
{
@ -1308,7 +1333,7 @@ struct ib_qp *ib_create_qp_kernel(struct ib_pd *pd,
struct ib_qp_init_attr *qp_init_attr,
const char *caller)
{
struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device;
struct ib_device *device = pd->device;
struct ib_qp *qp;
int ret;
@ -1321,21 +1346,10 @@ struct ib_qp *ib_create_qp_kernel(struct ib_pd *pd,
if (qp_init_attr->cap.max_rdma_ctxs)
rdma_rw_init_qp(device, qp_init_attr);
qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL, caller);
qp = create_qp(device, pd, qp_init_attr, NULL, NULL, caller);
if (IS_ERR(qp))
return qp;
if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
struct ib_qp *xrc_qp =
create_xrc_qp_user(qp, qp_init_attr);
if (IS_ERR(xrc_qp)) {
ret = PTR_ERR(xrc_qp);
goto err;
}
return xrc_qp;
}
ib_qp_usecnt_inc(qp);
if (qp_init_attr->cap.max_rdma_ctxs) {