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RDMA/restrack: Improve readability in task name management

Browse Source 
Use rdma_restrack_set_name() and rdma_restrack_parent_name() instead of
tricky uses of rdma_restrack_attach_task()/rdma_restrack_uadd().

This uniformly makes all restracks add'd using rdma_restrack_add().

Link: https://lore.kernel.org/r/20200922091106.2152715-6-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 2020-09-22 12:11:06 +03:00 committed by Jason Gunthorpe
parent c34a23c28c
commit b09c4d7012
12 changed files with 172 additions and 159 deletions
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134
drivers/infiniband/core/cma.c
View File

@ -453,10 +453,8 @@ static void _cma_attach_to_dev(struct rdma_id_private *id_priv,
id_priv->id.route.addr.dev_addr.transport =
rdma_node_get_transport(cma_dev->device->node_type);
list_add_tail(&id_priv->list, &cma_dev->id_list);
if (id_priv->res.kern_name)
rdma_restrack_add(&id_priv->res);
else
rdma_restrack_uadd(&id_priv->res);
rdma_restrack_add(&id_priv->res);
trace_cm_id_attach(id_priv, cma_dev->device);
}
@ -822,10 +820,10 @@ static void cma_id_put(struct rdma_id_private *id_priv)
complete(&id_priv->comp);
}
struct rdma_cm_id *__rdma_create_id(struct net *net,
rdma_cm_event_handler event_handler,
void *context, enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type, const char *caller)
static struct rdma_id_private *
__rdma_create_id(struct net *net, rdma_cm_event_handler event_handler,
void *context, enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type, const struct rdma_id_private *parent)
{
struct rdma_id_private *id_priv;
@ -853,11 +851,44 @@ struct rdma_cm_id *__rdma_create_id(struct net *net,
id_priv->seq_num &= 0x00ffffff;
rdma_restrack_new(&id_priv->res, RDMA_RESTRACK_CM_ID);
rdma_restrack_set_task(&id_priv->res, caller);
if (parent)
rdma_restrack_parent_name(&id_priv->res, &parent->res);
return &id_priv->id;
return id_priv;
}
EXPORT_SYMBOL(__rdma_create_id);
struct rdma_cm_id *
__rdma_create_kernel_id(struct net *net, rdma_cm_event_handler event_handler,
void *context, enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type, const char *caller)
{
struct rdma_id_private *ret;
ret = __rdma_create_id(net, event_handler, context, ps, qp_type, NULL);
if (IS_ERR(ret))
return ERR_CAST(ret);
rdma_restrack_set_name(&ret->res, caller);
return &ret->id;
}
EXPORT_SYMBOL(__rdma_create_kernel_id);
struct rdma_cm_id *rdma_create_user_id(rdma_cm_event_handler event_handler,
void *context,
enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type)
{
struct rdma_id_private *ret;
ret = __rdma_create_id(current->nsproxy->net_ns, event_handler, context,
ps, qp_type, NULL);
if (IS_ERR(ret))
return ERR_CAST(ret);
rdma_restrack_set_name(&ret->res, NULL);
return &ret->id;
}
EXPORT_SYMBOL(rdma_create_user_id);
static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)
{
@ -2029,14 +2060,15 @@ cma_ib_new_conn_id(const struct rdma_cm_id *listen_id,
int ret;
listen_id_priv = container_of(listen_id, struct rdma_id_private, id);
id = __rdma_create_id(listen_id->route.addr.dev_addr.net,
listen_id->event_handler, listen_id->context,
listen_id->ps, ib_event->param.req_rcvd.qp_type,
listen_id_priv->res.kern_name);
if (IS_ERR(id))
id_priv = __rdma_create_id(listen_id->route.addr.dev_addr.net,
listen_id->event_handler, listen_id->context,
listen_id->ps,
ib_event->param.req_rcvd.qp_type,
listen_id_priv);
if (IS_ERR(id_priv))
return NULL;
id_priv = container_of(id, struct rdma_id_private, id);
id = &id_priv->id;
if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr,
(struct sockaddr *)&id->route.addr.dst_addr,
listen_id, ib_event, ss_family, service_id))
@ -2090,13 +2122,13 @@ cma_ib_new_udp_id(const struct rdma_cm_id *listen_id,
int ret;
listen_id_priv = container_of(listen_id, struct rdma_id_private, id);
id = __rdma_create_id(net, listen_id->event_handler, listen_id->context,
listen_id->ps, IB_QPT_UD,
listen_id_priv->res.kern_name);
if (IS_ERR(id))
id_priv = __rdma_create_id(net, listen_id->event_handler,
listen_id->context, listen_id->ps, IB_QPT_UD,
listen_id_priv);
if (IS_ERR(id_priv))
return NULL;
id_priv = container_of(id, struct rdma_id_private, id);
id = &id_priv->id;
if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr,
(struct sockaddr *)&id->route.addr.dst_addr,
listen_id, ib_event, ss_family,
@ -2332,7 +2364,6 @@ static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event)
static int iw_conn_req_handler(struct iw_cm_id *cm_id,
struct iw_cm_event *iw_event)
{
struct rdma_cm_id *new_cm_id;
struct rdma_id_private *listen_id, *conn_id;
struct rdma_cm_event event = {};
int ret = -ECONNABORTED;
@ -2352,16 +2383,14 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
goto out;
/* Create a new RDMA id for the new IW CM ID */
new_cm_id = __rdma_create_id(listen_id->id.route.addr.dev_addr.net,
listen_id->id.event_handler,
listen_id->id.context,
RDMA_PS_TCP, IB_QPT_RC,
listen_id->res.kern_name);
if (IS_ERR(new_cm_id)) {
conn_id = __rdma_create_id(listen_id->id.route.addr.dev_addr.net,
listen_id->id.event_handler,
listen_id->id.context, RDMA_PS_TCP,
IB_QPT_RC, listen_id);
if (IS_ERR(conn_id)) {
ret = -ENOMEM;
goto out;
}
conn_id = container_of(new_cm_id, struct rdma_id_private, id);
mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);
conn_id->state = RDMA_CM_CONNECT;
@ -2466,7 +2495,6 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
struct cma_device *cma_dev)
{
struct rdma_id_private *dev_id_priv;
struct rdma_cm_id *id;
struct net *net = id_priv->id.route.addr.dev_addr.net;
int ret;
@ -2475,13 +2503,12 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1))
return;
id = __rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps,
id_priv->id.qp_type, id_priv->res.kern_name);
if (IS_ERR(id))
dev_id_priv =
__rdma_create_id(net, cma_listen_handler, id_priv,
id_priv->id.ps, id_priv->id.qp_type, id_priv);
if (IS_ERR(dev_id_priv))
return;
dev_id_priv = container_of(id, struct rdma_id_private, id);
dev_id_priv->state = RDMA_CM_ADDR_BOUND;
memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv),
rdma_addr_size(cma_src_addr(id_priv)));
@ -2494,7 +2521,7 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
dev_id_priv->tos_set = id_priv->tos_set;
dev_id_priv->tos = id_priv->tos;
ret = rdma_listen(id, id_priv->backlog);
ret = rdma_listen(&dev_id_priv->id, id_priv->backlog);
if (ret)
dev_warn(&cma_dev->device->dev,
"RDMA CMA: cma_listen_on_dev, error %d\n", ret);
@ -4149,8 +4176,25 @@ static int cma_send_sidr_rep(struct rdma_id_private *id_priv,
return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep);
}
int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
const char *caller)
/**
* rdma_accept - Called to accept a connection request or response.
* @id: Connection identifier associated with the request.
* @conn_param: Information needed to establish the connection. This must be
* provided if accepting a connection request. If accepting a connection
* response, this parameter must be NULL.
*
* Typically, this routine is only called by the listener to accept a connection
* request. It must also be called on the active side of a connection if the
* user is performing their own QP transitions.
*
* In the case of error, a reject message is sent to the remote side and the
* state of the qp associated with the id is modified to error, such that any
* previously posted receive buffers would be flushed.
*
* This function is for use by kernel ULPs and must be called from under the
* handler callback.
*/
int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
{
struct rdma_id_private *id_priv =
container_of(id, struct rdma_id_private, id);
@ -4158,8 +4202,6 @@ int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
lockdep_assert_held(&id_priv->handler_mutex);
rdma_restrack_set_task(&id_priv->res, caller);
if (READ_ONCE(id_priv->state) != RDMA_CM_CONNECT)
return -EINVAL;
@ -4198,10 +4240,10 @@ int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
rdma_reject(id, NULL, 0, IB_CM_REJ_CONSUMER_DEFINED);
return ret;
}
EXPORT_SYMBOL(__rdma_accept);
EXPORT_SYMBOL(rdma_accept);
int __rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
const char *caller, struct rdma_ucm_ece *ece)
int rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
struct rdma_ucm_ece *ece)
{
struct rdma_id_private *id_priv =
container_of(id, struct rdma_id_private, id);
@ -4209,9 +4251,9 @@ int __rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
id_priv->ece.vendor_id = ece->vendor_id;
id_priv->ece.attr_mod = ece->attr_mod;
return __rdma_accept(id, conn_param, caller);
return rdma_accept(id, conn_param);
}
EXPORT_SYMBOL(__rdma_accept_ece);
EXPORT_SYMBOL(rdma_accept_ece);
void rdma_lock_handler(struct rdma_cm_id *id)
{

12
drivers/infiniband/core/core_priv.h
View File

@ -361,15 +361,9 @@ static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
*/
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) {
if (uobj)
rdma_restrack_uadd(&qp->res);
else {
rdma_restrack_set_task(&qp->res, pd->res.kern_name);
rdma_restrack_add(&qp->res);
}
} else
qp->res.valid = false;
rdma_restrack_parent_name(&qp->res, &pd->res);
rdma_restrack_add(&qp->res);
}
return qp;
}

9
drivers/infiniband/core/counters.c
View File

@ -250,13 +250,8 @@ static struct rdma_counter *rdma_get_counter_auto_mode(struct ib_qp *qp,
static void rdma_counter_res_add(struct rdma_counter *counter,
struct ib_qp *qp)
{
if (rdma_is_kernel_res(&qp->res)) {
rdma_restrack_set_task(&counter->res, qp->res.kern_name);
rdma_restrack_add(&counter->res);
} else {
rdma_restrack_attach_task(&counter->res, qp->res.task);
rdma_restrack_uadd(&counter->res);
}
rdma_restrack_parent_name(&counter->res, &qp->res);
rdma_restrack_add(&counter->res);
}
static void counter_release(struct kref *kref)

2
drivers/infiniband/core/cq.c
View File

@ -236,7 +236,7 @@ struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe,
goto out_free_cq;
rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
rdma_restrack_set_task(&cq->res, caller);
rdma_restrack_set_name(&cq->res, caller);
ret = dev->ops.create_cq(cq, &cq_attr, NULL);
if (ret)

73
drivers/infiniband/core/restrack.c
View File

@ -147,34 +147,56 @@ static struct ib_device *res_to_dev(struct rdma_restrack_entry *res)
}
}
void rdma_restrack_set_task(struct rdma_restrack_entry *res,
const char *caller)
/**
* rdma_restrack_attach_task() - attach the task onto this resource,
* valid for user space restrack entries.
* @res: resource entry
* @task: the task to attach
*/
static void rdma_restrack_attach_task(struct rdma_restrack_entry *res,
struct task_struct *task)
{
if (WARN_ON_ONCE(!task))
return;
if (res->task)
put_task_struct(res->task);
get_task_struct(task);
res->task = task;
res->user = true;
}
/**
* rdma_restrack_set_name() - set the task for this resource
* @res: resource entry
* @caller: kernel name, the current task will be used if the caller is NULL.
*/
void rdma_restrack_set_name(struct rdma_restrack_entry *res, const char *caller)
{
if (caller) {
res->kern_name = caller;
return;
}
if (res->task)
put_task_struct(res->task);
get_task_struct(current);
res->task = current;
rdma_restrack_attach_task(res, current);
}
EXPORT_SYMBOL(rdma_restrack_set_task);
EXPORT_SYMBOL(rdma_restrack_set_name);
/**
* rdma_restrack_attach_task() - attach the task onto this resource
* @res: resource entry
* @task: the task to attach, the current task will be used if it is NULL.
* rdma_restrack_parent_name() - set the restrack name properties based
* on parent restrack
* @dst: destination resource entry
* @parent: parent resource entry
*/
void rdma_restrack_attach_task(struct rdma_restrack_entry *res,
struct task_struct *task)
void rdma_restrack_parent_name(struct rdma_restrack_entry *dst,
const struct rdma_restrack_entry *parent)
{
if (res->task)
put_task_struct(res->task);
get_task_struct(task);
res->task = task;
if (rdma_is_kernel_res(parent))
dst->kern_name = parent->kern_name;
else
rdma_restrack_attach_task(dst, parent->task);
}
EXPORT_SYMBOL(rdma_restrack_parent_name);
/**
* rdma_restrack_new() - Initializes new restrack entry to allow _put() interface
@ -229,25 +251,6 @@ void rdma_restrack_add(struct rdma_restrack_entry *res)
}
EXPORT_SYMBOL(rdma_restrack_add);
/**
* rdma_restrack_uadd() - add user object to the reource tracking database
* @res: resource entry
*/
void rdma_restrack_uadd(struct rdma_restrack_entry *res)
{
if ((res->type != RDMA_RESTRACK_CM_ID) &&
(res->type != RDMA_RESTRACK_COUNTER))
res->task = NULL;
if (!res->task)
rdma_restrack_set_task(res, NULL);
res->kern_name = NULL;
res->user = true;
rdma_restrack_add(res);
}
EXPORT_SYMBOL(rdma_restrack_uadd);
int __must_check rdma_restrack_get(struct rdma_restrack_entry *res)
{
return kref_get_unless_zero(&res->kref);

6
drivers/infiniband/core/restrack.h
View File

@ -29,6 +29,8 @@ void rdma_restrack_add(struct rdma_restrack_entry *res);
void rdma_restrack_del(struct rdma_restrack_entry *res);
void rdma_restrack_new(struct rdma_restrack_entry *res,
enum rdma_restrack_type type);
void rdma_restrack_attach_task(struct rdma_restrack_entry *res,
struct task_struct *task);
void rdma_restrack_set_name(struct rdma_restrack_entry *res,
const char *caller);
void rdma_restrack_parent_name(struct rdma_restrack_entry *dst,
const struct rdma_restrack_entry *parent);
#endif /* _RDMA_CORE_RESTRACK_H_ */

7
drivers/infiniband/core/ucma.c
View File

@ -456,8 +456,7 @@ static ssize_t ucma_create_id(struct ucma_file *file, const char __user *inbuf,
return -ENOMEM;
ctx->uid = cmd.uid;
cm_id = __rdma_create_id(current->nsproxy->net_ns,
ucma_event_handler, ctx, cmd.ps, qp_type, NULL);
cm_id = rdma_create_user_id(ucma_event_handler, ctx, cmd.ps, qp_type);
if (IS_ERR(cm_id)) {
ret = PTR_ERR(cm_id);
goto err1;
@ -1126,7 +1125,7 @@ static ssize_t ucma_accept(struct ucma_file *file, const char __user *inbuf,
ucma_copy_conn_param(ctx->cm_id, &conn_param, &cmd.conn_param);
mutex_lock(&ctx->mutex);
rdma_lock_handler(ctx->cm_id);
ret = __rdma_accept_ece(ctx->cm_id, &conn_param, NULL, &ece);
ret = rdma_accept_ece(ctx->cm_id, &conn_param, &ece);
if (!ret) {
/* The uid must be set atomically with the handler */
ctx->uid = cmd.uid;
@ -1136,7 +1135,7 @@ static ssize_t ucma_accept(struct ucma_file *file, const char __user *inbuf,
} else {
mutex_lock(&ctx->mutex);
rdma_lock_handler(ctx->cm_id);
ret = __rdma_accept_ece(ctx->cm_id, NULL, NULL, &ece);
ret = rdma_accept_ece(ctx->cm_id, NULL, &ece);
rdma_unlock_handler(ctx->cm_id);
mutex_unlock(&ctx->mutex);
}

14
drivers/infiniband/core/uverbs_cmd.c
View File

@ -223,6 +223,7 @@ int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs)
xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC);
rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX);
rdma_restrack_set_name(&ucontext->res, NULL);
attrs->context = ucontext;
return 0;
}
@ -251,7 +252,7 @@ int ib_init_ucontext(struct uverbs_attr_bundle *attrs)
if (ret)
goto err_uncharge;
rdma_restrack_uadd(&ucontext->res);
rdma_restrack_add(&ucontext->res);
/*
* Make sure that ib_uverbs_get_ucontext() sees the pointer update
@ -443,10 +444,12 @@ static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
atomic_set(&pd->usecnt, 0);
rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
rdma_restrack_set_name(&pd->res, NULL);
ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
if (ret)
goto err_alloc;
rdma_restrack_uadd(&pd->res);
rdma_restrack_add(&pd->res);
uobj->object = pd;
uobj_finalize_uobj_create(uobj, attrs);
@ -748,7 +751,8 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
mr->iova = cmd.hca_va;
rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
rdma_restrack_uadd(&mr->res);
rdma_restrack_set_name(&mr->res, NULL);
rdma_restrack_add(&mr->res);
uobj->object = mr;
uobj_put_obj_read(pd);
@ -1008,10 +1012,12 @@ static int create_cq(struct uverbs_attr_bundle *attrs,
atomic_set(&cq->usecnt, 0);
rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
rdma_restrack_set_name(&cq->res, NULL);
ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
if (ret)
goto err_free;
rdma_restrack_uadd(&cq->res);
rdma_restrack_add(&cq->res);
obj->uevent.uobject.object = cq;
obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);

4
drivers/infiniband/core/uverbs_std_types_cq.c
View File

@ -126,13 +126,15 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(
atomic_set(&cq->usecnt, 0);
rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
rdma_restrack_set_name(&cq->res, NULL);
ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
if (ret)
goto err_free;
obj->uevent.uobject.object = cq;
obj->uevent.uobject.user_handle = user_handle;
rdma_restrack_uadd(&cq->res);
rdma_restrack_add(&cq->res);
uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_CREATE_CQ_HANDLE);
ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_CQ_RESP_CQE, &cq->cqe,

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

@ -273,7 +273,7 @@ struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
pd->flags = flags;
rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
rdma_restrack_set_task(&pd->res, caller);
rdma_restrack_set_name(&pd->res, caller);
ret = device->ops.alloc_pd(pd, NULL);
if (ret) {
@ -1999,7 +1999,7 @@ struct ib_cq *__ib_create_cq(struct ib_device *device,
atomic_set(&cq->usecnt, 0);
rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
rdma_restrack_set_task(&cq->res, caller);
rdma_restrack_set_name(&cq->res, caller);
ret = device->ops.create_cq(cq, cq_attr, NULL);
if (ret) {
@ -2081,7 +2081,7 @@ struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
atomic_inc(&pd->usecnt);
rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
rdma_restrack_set_task(&mr->res, pd->res.kern_name);
rdma_restrack_parent_name(&mr->res, &pd->res);
rdma_restrack_add(&mr->res);
return mr;
@ -2165,7 +2165,7 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
mr->sig_attrs = NULL;
rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
rdma_restrack_set_task(&mr->res, pd->res.kern_name);
rdma_restrack_parent_name(&mr->res, &pd->res);
rdma_restrack_add(&mr->res);
out:
trace_mr_alloc(pd, mr_type, max_num_sg, mr);
@ -2226,7 +2226,7 @@ struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
mr->sig_attrs = sig_attrs;
rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
rdma_restrack_set_task(&mr->res, pd->res.kern_name);
rdma_restrack_parent_name(&mr->res, &pd->res);
rdma_restrack_add(&mr->res);
out:
trace_mr_integ_alloc(pd, max_num_data_sg, max_num_meta_sg, mr);

47
include/rdma/rdma_cm.h
View File

@ -110,11 +110,14 @@ struct rdma_cm_id {
u8 port_num;
};
struct rdma_cm_id *__rdma_create_id(struct net *net,
rdma_cm_event_handler event_handler,
void *context, enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type,
const char *caller);
struct rdma_cm_id *
__rdma_create_kernel_id(struct net *net, rdma_cm_event_handler event_handler,
void *context, enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type, const char *caller);
struct rdma_cm_id *rdma_create_user_id(rdma_cm_event_handler event_handler,
void *context,
enum rdma_ucm_port_space ps,
enum ib_qp_type qp_type);
/**
* rdma_create_id - Create an RDMA identifier.
@ -132,9 +135,9 @@ struct rdma_cm_id *__rdma_create_id(struct net *net,
* The event handler callback serializes on the id's mutex and is
* allowed to sleep.
*/
#define rdma_create_id(net, event_handler, context, ps, qp_type) \
__rdma_create_id((net), (event_handler), (context), (ps), (qp_type), \
KBUILD_MODNAME)
#define rdma_create_id(net, event_handler, context, ps, qp_type) \
__rdma_create_kernel_id(net, event_handler, context, ps, qp_type, \
KBUILD_MODNAME)
/**
* rdma_destroy_id - Destroys an RDMA identifier.
@ -250,34 +253,12 @@ int rdma_connect_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
*/
int rdma_listen(struct rdma_cm_id *id, int backlog);
int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
const char *caller);
int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param);
void rdma_lock_handler(struct rdma_cm_id *id);
void rdma_unlock_handler(struct rdma_cm_id *id);
int __rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
const char *caller, struct rdma_ucm_ece *ece);
/**
* rdma_accept - Called to accept a connection request or response.
* @id: Connection identifier associated with the request.
* @conn_param: Information needed to establish the connection. This must be
* provided if accepting a connection request. If accepting a connection
* response, this parameter must be NULL.
*
* Typically, this routine is only called by the listener to accept a connection
* request. It must also be called on the active side of a connection if the
* user is performing their own QP transitions.
*
* In the case of error, a reject message is sent to the remote side and the
* state of the qp associated with the id is modified to error, such that any
* previously posted receive buffers would be flushed.
*
* This function is for use by kernel ULPs and must be called from under the
* handler callback.
*/
#define rdma_accept(id, conn_param) \
__rdma_accept((id), (conn_param), KBUILD_MODNAME)
int rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,
struct rdma_ucm_ece *ece);
/**
* rdma_notify - Notifies the RDMA CM of an asynchronous event that has

13
include/rdma/restrack.h
View File

@ -106,14 +106,11 @@ struct rdma_restrack_entry {
int rdma_restrack_count(struct ib_device *dev,
enum rdma_restrack_type type);
void rdma_restrack_uadd(struct rdma_restrack_entry *res);
/**
* rdma_is_kernel_res() - check the owner of resource
* @res: resource entry
*/
static inline bool rdma_is_kernel_res(struct rdma_restrack_entry *res)
static inline bool rdma_is_kernel_res(const struct rdma_restrack_entry *res)
{
return !res->user;
}
@ -130,14 +127,6 @@ int __must_check rdma_restrack_get(struct rdma_restrack_entry *res);
*/
int rdma_restrack_put(struct rdma_restrack_entry *res);
/**
* rdma_restrack_set_task() - set the task for this resource
* @res: resource entry
* @caller: kernel name, the current task will be used if the caller is NULL.
*/
void rdma_restrack_set_task(struct rdma_restrack_entry *res,
const char *caller);
/*
* Helper functions for rdma drivers when filling out
* nldev driver attributes.