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RDMA/restrack: Support all QP types

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The latest changes in restrack name handling allowed to simplify the QP
creation code to support all types of QPs.

For example XRC QP are presented with rdmatool.

$ ibv_xsrq_pingpong &
$ rdma res show qp
link ibp0s9/1 lqpn 0 type SMI state RTS sq-psn 0 comm [ib_core]
link ibp0s9/1 lqpn 1 type GSI state RTS sq-psn 0 comm [ib_core]
link ibp0s9/1 lqpn 7 type UD state RTS sq-psn 0 comm [mlx5_ib]
link ibp0s9/1 lqpn 42 type XRC_TGT state INIT sq-psn 0 path-mig-state MIGRATED comm [ib_uverbs]
link ibp0s9/1 lqpn 43 type XRC_INI state INIT sq-psn 0 path-mig-state MIGRATED pdn 197 pid 419 comm ibv_xsrq_pingpong

Link: https://lore.kernel.org/r/20201117070148.1974114-4-leon@kernel.org
Reviewed-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky 2020-11-17 09:01:48 +02:00 committed by Jason Gunthorpe
parent 2b1f747071
commit 66f57b871e
5 changed files with 25 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/infiniband/core/core_priv.h
View file

@ -318,15 +318,12 @@ struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
void nldev_init(void);
void nldev_exit(void);
static inline 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)
static inline 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)
{
enum ib_qp_type qp_type = attr->qp_type;
struct ib_qp *qp;
bool is_xrc;
if (!dev->ops.create_qp)
return ERR_PTR(-EOPNOTSUPP);
@ -347,7 +344,6 @@ static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
qp->srq = attr->srq;
qp->rwq_ind_tbl = attr->rwq_ind_tbl;
qp->event_handler = attr->event_handler;
qp->qp_type = attr->qp_type;
qp->port = attr->port_num;
atomic_set(&qp->usecnt, 0);
@ -356,16 +352,9 @@ static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
INIT_LIST_HEAD(&qp->sig_mrs);
rdma_restrack_new(&qp->res, RDMA_RESTRACK_QP);
/*
* We don't track XRC QPs for now, because they don't have PD
* and more importantly they are created internaly by driver,
* see mlx5 create_dev_resources() as an example.
*/
is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT;
if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) {
rdma_restrack_parent_name(&qp->res, &pd->res);
rdma_restrack_add(&qp->res);
}
WARN_ONCE(!udata && !caller, "Missing kernel QP owner");
rdma_restrack_set_name(&qp->res, udata ? NULL : caller);
rdma_restrack_add(&qp->res);
return qp;
}

4
drivers/infiniband/core/uverbs_cmd.c
View file

@ -1400,8 +1400,8 @@ static int create_qp(struct uverbs_attr_bundle *attrs,
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);
qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj,
NULL);
if (IS_ERR(qp)) {
ret = PTR_ERR(qp);

4
drivers/infiniband/core/uverbs_std_types_qp.c
View file

@ -251,8 +251,8 @@ static int UVERBS_HANDLER(UVERBS_METHOD_QP_CREATE)(
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);
qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj,
NULL);
if (IS_ERR(qp)) {
ret = PTR_ERR(qp);

11
drivers/infiniband/core/verbs.c
View file

@ -1191,7 +1191,7 @@ static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp,
}
/**
* ib_create_qp - Creates a kernel QP associated with the specified protection
* ib_create_named_qp - Creates a kernel QP associated with the specified protection
* domain.
* @pd: The protection domain associated with the QP.
* @qp_init_attr: A list of initial attributes required to create the
@ -1200,8 +1200,9 @@ static struct ib_qp *create_xrc_qp_user(struct ib_qp *qp,
*
* NOTE: for user qp use ib_create_qp_user with valid udata!
*/
struct ib_qp *ib_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *qp_init_attr)
struct ib_qp *ib_create_named_qp(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_qp *qp;
@ -1226,7 +1227,7 @@ struct ib_qp *ib_create_qp(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);
qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL, caller);
if (IS_ERR(qp))
return qp;
@ -1292,7 +1293,7 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
return ERR_PTR(ret);
}
EXPORT_SYMBOL(ib_create_qp);
EXPORT_SYMBOL(ib_create_named_qp);
static const struct {
int valid;

10
include/rdma/ib_verbs.h
View file

@ -3618,8 +3618,14 @@ static inline int ib_post_srq_recv(struct ib_srq *srq,
bad_recv_wr ? : &dummy);
}
struct ib_qp *ib_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *qp_init_attr);
struct ib_qp *ib_create_named_qp(struct ib_pd *pd,
struct ib_qp_init_attr *qp_init_attr,
const char *caller);
static inline struct ib_qp *ib_create_qp(struct ib_pd *pd,
struct ib_qp_init_attr *init_attr)
{
return ib_create_named_qp(pd, init_attr, KBUILD_MODNAME);
}
/**
* ib_modify_qp_with_udata - Modifies the attributes for the specified QP.