116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
|
#ifndef __LINUX_GENERIC_NETLINK_H
|
||
|
|
#define __LINUX_GENERIC_NETLINK_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/netlink.h>
|
||
|
|
|
||
|
|
#define GENL_NAMSIZ 16 /* length of family name */
|
||
|
|
|
||
|
|
#define GENL_MIN_ID NLMSG_MIN_TYPE
|
||
|
|
#define GENL_MAX_ID 1023
|
||
|
|
|
||
|
|
struct genlmsghdr {
|
||
|
|
__u8 cmd;
|
||
|
|
__u8 version;
|
||
|
|
__u16 reserved;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
|
||
|
|
|
||
|
|
#define GENL_ADMIN_PERM 0x01
|
||
|
|
#define GENL_CMD_CAP_DO 0x02
|
||
|
|
#define GENL_CMD_CAP_DUMP 0x04
|
||
|
|
#define GENL_CMD_CAP_HASPOL 0x08
|
||
|
|
|
||
|
|
/*
|
||
|
|
* List of reserved static generic netlink identifiers:
|
||
|
|
*/
|
||
|
|
#define GENL_ID_GENERATE 0
|
||
|
|
#define GENL_ID_CTRL NLMSG_MIN_TYPE
|
||
|
|
|
||
|
|
/**************************************************************************
|
||
|
|
* Controller
|
||
|
|
**************************************************************************/
|
||
|
|
|
||
|
|
enum {
|
||
|
|
CTRL_CMD_UNSPEC,
|
||
|
|
CTRL_CMD_NEWFAMILY,
|
||
|
|
CTRL_CMD_DELFAMILY,
|
||
|
|
CTRL_CMD_GETFAMILY,
|
||
|
|
CTRL_CMD_NEWOPS,
|
||
|
|
CTRL_CMD_DELOPS,
|
||
|
|
CTRL_CMD_GETOPS,
|
||
|
|
CTRL_CMD_NEWMCAST_GRP,
|
||
|
|
CTRL_CMD_DELMCAST_GRP,
|
||
|
|
CTRL_CMD_GETMCAST_GRP, /* unused */
|
||
|
|
__CTRL_CMD_MAX,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
|
||
|
|
|
||
|
|
enum {
|
||
|
|
CTRL_ATTR_UNSPEC,
|
||
|
|
CTRL_ATTR_FAMILY_ID,
|
||
|
|
CTRL_ATTR_FAMILY_NAME,
|
||
|
|
CTRL_ATTR_VERSION,
|
||
|
|
CTRL_ATTR_HDRSIZE,
|
||
|
|
CTRL_ATTR_MAXATTR,
|
||
|
|
CTRL_ATTR_OPS,
|
||
|
|
CTRL_ATTR_MCAST_GROUPS,
|
||
|
|
__CTRL_ATTR_MAX,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
|
||
|
|
|
||
|
|
enum {
|
||
|
|
CTRL_ATTR_OP_UNSPEC,
|
||
|
|
CTRL_ATTR_OP_ID,
|
||
|
|
CTRL_ATTR_OP_FLAGS,
|
||
|
|
__CTRL_ATTR_OP_MAX,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
|
||
|
|
|
||
|
|
enum {
|
||
|
|
CTRL_ATTR_MCAST_GRP_UNSPEC,
|
||
|
|
CTRL_ATTR_MCAST_GRP_NAME,
|
||
|
|
CTRL_ATTR_MCAST_GRP_ID,
|
||
|
|
__CTRL_ATTR_MCAST_GRP_MAX,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
/* All generic netlink requests are serialized by a global lock. */
|
||
|
|
extern void genl_lock(void);
|
||
|
|
extern void genl_unlock(void);
|
||
|
|
#ifdef CONFIG_PROVE_LOCKING
|
||
|
|
extern int lockdep_genl_is_held(void);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* rcu_dereference_genl - rcu_dereference with debug checking
|
||
|
|
* @p: The pointer to read, prior to dereferencing
|
||
|
|
*
|
||
|
|
* Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
|
||
|
|
* or genl mutex. Note : Please prefer genl_dereference() or rcu_dereference()
|
||
|
|
*/
|
||
|
|
#define rcu_dereference_genl(p) \
|
||
|
|
rcu_dereference_check(p, lockdep_genl_is_held())
|
||
|
|
|
||
|
|
/**
|
||
|
|
* genl_dereference - fetch RCU pointer when updates are prevented by genl mutex
|
||
|
|
* @p: The pointer to read, prior to dereferencing
|
||
|
|
*
|
||
|
|
* Return the value of the specified RCU-protected pointer, but omit
|
||
|
|
* both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
|
||
|
|
* caller holds genl mutex.
|
||
|
|
*/
|
||
|
|
#define genl_dereference(p) \
|
||
|
|
rcu_dereference_protected(p, lockdep_genl_is_held())
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
#endif /* __LINUX_GENERIC_NETLINK_H */
|