/*
* Copyright ( c ) 2005 Topspin Communications . All rights reserved .
* Copyright ( c ) 2005 , 2006 Cisco Systems . All rights reserved .
* Copyright ( c ) 2005 Mellanox Technologies . All rights reserved .
* Copyright ( c ) 2005 Voltaire , Inc . All rights reserved .
* Copyright ( c ) 2005 PathScale , Inc . All rights reserved .
*
* This software is available to you under a choice of one of two
* licenses . You may choose to be licensed under the terms of the GNU
* General Public License ( GPL ) Version 2 , available from the file
* COPYING in the main directory of this source tree , or the
* OpenIB . org BSD license below :
*
* Redistribution and use in source and binary forms , with or
* without modification , are permitted provided that the following
* conditions are met :
*
* - Redistributions of source code must retain the above
* copyright notice , this list of conditions and the following
* disclaimer .
*
* - Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials
* provided with the distribution .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,
* EXPRESS OR IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT . IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER LIABILITY , WHETHER IN AN
* ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING FROM , OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE .
*/
#ifndef UVERBS_H
#define UVERBS_H
#include <linux/kref.h>
#include <linux/idr.h>
#include <linux/mutex.h>
#include <linux/completion.h>
#include <linux/cdev.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/uverbs_std_types.h>
#define UVERBS_MODULE_NAME ib_uverbs
#include <rdma/uverbs_named_ioctl.h>
static inline void
ib_uverbs_init_udata(struct ib_udata *udata,
const void __user *ibuf,
void __user *obuf,
size_t ilen, size_t olen)
{
udata->inbuf = ibuf;
udata->outbuf = obuf;
udata->inlen = ilen;
udata->outlen = olen;
}
static inline void
ib_uverbs_init_udata_buf_or_null(struct ib_udata *udata,
const void __user *ibuf,
void __user *obuf,
size_t ilen, size_t olen)
{
ib_uverbs_init_udata(udata,
ilen ? ibuf : NULL, olen ? obuf : NULL,
ilen, olen);
}
/*
* Our lifetime rules for these structs are the following :
*
* struct ib_uverbs_device : One reference is held by the module and
* released in ib_uverbs_remove_one ( ) . Another reference is taken by
* ib_uverbs_open ( ) each time the character special file is opened ,
* and released in ib_uverbs_release_file ( ) when the file is released .
*
* struct ib_uverbs_file : One reference is held by the VFS and
* released when the file is closed . Another reference is taken when
* an asynchronous event queue file is created and released when the
* event file is closed .
*
* struct ib_uverbs_event_queue : Base structure for
* struct ib_uverbs_async_event_file and struct ib_uverbs_completion_event_file .
* One reference is held by the VFS and released when the file is closed .
* For asynchronous event files , another reference is held by the corresponding
* main context file and released when that file is closed . For completion
* event files , a reference is taken when a CQ is created that uses the file ,
* and released when the CQ is destroyed .
*/
struct ib_uverbs_device {
refcount_t refcount;
u32 num_comp_vectors;
struct completion comp;
struct device dev;
/* First group for device attributes, NULL terminated array */
const struct attribute_group *groups[2 ];
struct ib_device __rcu *ib_dev;
int devnum;
struct cdev cdev;
struct rb_root xrcd_tree;
struct mutex xrcd_tree_mutex;
struct srcu_struct disassociate_srcu;
struct mutex lists_mutex; /* protect lists */
struct list_head uverbs_file_list;
struct uverbs_api *uapi;
};
struct ib_uverbs_event_queue {
spinlock_t lock;
int is_closed;
wait_queue_head_t poll_wait;
struct fasync_struct *async_queue;
struct list_head event_list;
};
struct ib_uverbs_async_event_file {
struct ib_uobject uobj;
struct ib_uverbs_event_queue ev_queue;
struct ib_event_handler event_handler;
};
struct ib_uverbs_completion_event_file {
struct ib_uobject uobj;
struct ib_uverbs_event_queue ev_queue;
};
struct ib_uverbs_event {
union {
struct ib_uverbs_async_event_desc async;
struct ib_uverbs_comp_event_desc comp;
} desc;
struct list_head list;
struct list_head obj_list;
u32 *counter;
};
struct ib_uverbs_mcast_entry {
struct list_head list;
union ib_gid gid;
u16 lid;
};
struct ib_uevent_object {
struct ib_uobject uobject;
struct ib_uverbs_async_event_file *event_file;
/* List member for ib_uverbs_async_event_file list */
struct list_head event_list;
u32 events_reported;
};
struct ib_uxrcd_object {
struct ib_uobject uobject;
atomic_t refcnt;
};
struct ib_usrq_object {
struct ib_uevent_object uevent;
struct ib_uxrcd_object *uxrcd;
};
struct ib_uqp_object {
struct ib_uevent_object uevent;
/* lock for mcast list */
struct mutex mcast_lock;
struct list_head mcast_list;
struct ib_uxrcd_object *uxrcd;
};
struct ib_uwq_object {
struct ib_uevent_object uevent;
};
struct ib_ucq_object {
struct ib_uevent_object uevent;
struct list_head comp_list;
u32 comp_events_reported;
};
extern const struct file_operations uverbs_event_fops;
extern const struct file_operations uverbs_async_event_fops;
void ib_uverbs_init_event_queue(struct ib_uverbs_event_queue *ev_queue);
void ib_uverbs_init_async_event_file(struct ib_uverbs_async_event_file *ev_file);
void ib_uverbs_free_event_queue(struct ib_uverbs_event_queue *event_queue);
void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res);
int uverbs_async_event_release(struct inode *inode, struct file *filp);
int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs);
int ib_init_ucontext(struct uverbs_attr_bundle *attrs);
void ib_uverbs_release_ucq(struct ib_uverbs_completion_event_file *ev_file,
struct ib_ucq_object *uobj);
void ib_uverbs_release_uevent(struct ib_uevent_object *uobj);
void ib_uverbs_release_file(struct kref *ref);
void ib_uverbs_async_handler(struct ib_uverbs_async_event_file *async_file,
__u64 element, __u64 event,
struct list_head *obj_list, u32 *counter);
void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context);
void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_wq_event_handler(struct ib_event *event, void *context_ptr);
void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr);
int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs);
int uverbs_dealloc_mw(struct ib_mw *mw);
void ib_uverbs_detach_umcast(struct ib_qp *qp,
struct ib_uqp_object *uobj);
long ib_uverbs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
struct ib_uverbs_flow_spec {
union {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
struct ib_uverbs_flow_spec_eth eth;
struct ib_uverbs_flow_spec_ipv4 ipv4;
struct ib_uverbs_flow_spec_esp esp;
struct ib_uverbs_flow_spec_tcp_udp tcp_udp;
struct ib_uverbs_flow_spec_ipv6 ipv6;
struct ib_uverbs_flow_spec_action_tag flow_tag;
struct ib_uverbs_flow_spec_action_drop drop;
struct ib_uverbs_flow_spec_action_handle action;
struct ib_uverbs_flow_spec_action_count flow_count;
};
};
int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
const void *kern_spec_mask,
const void *kern_spec_val,
size_t kern_filter_sz,
union ib_flow_spec *ib_spec);
/*
* ib_uverbs_query_port_resp . port_cap_flags started out as just a copy of the
* PortInfo CapabilityMask , but was extended with unique bits .
*/
static inline u32 make_port_cap_flags(const struct ib_port_attr *attr)
{
u32 res;
/* All IBA CapabilityMask bits are passed through here, except bit 26,
* which is overridden with IP_BASED_GIDS . This is due to a historical
* mistake in the implementation of IP_BASED_GIDS . Otherwise all other
* bits match the IBA definition across all kernel versions .
*/
res = attr->port_cap_flags & ~(u32)IB_UVERBS_PCF_IP_BASED_GIDS;
if (attr->ip_gids)
res |= IB_UVERBS_PCF_IP_BASED_GIDS;
return res;
}
static inline struct ib_uverbs_async_event_file *
ib_uverbs_get_async_event(struct uverbs_attr_bundle *attrs,
u16 id)
{
struct ib_uobject *async_ev_file_uobj;
struct ib_uverbs_async_event_file *async_ev_file;
async_ev_file_uobj = uverbs_attr_get_uobject(attrs, id);
if (IS_ERR(async_ev_file_uobj))
async_ev_file = READ_ONCE(attrs->ufile->default_async_file);
else
async_ev_file = container_of(async_ev_file_uobj,
struct ib_uverbs_async_event_file,
uobj);
if (async_ev_file)
uverbs_uobject_get(&async_ev_file->uobj);
return async_ev_file;
}
void copy_port_attr_to_resp(struct ib_port_attr *attr,
struct ib_uverbs_query_port_resp *resp,
struct ib_device *ib_dev, u8 port_num);
#endif /* UVERBS_H */
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland