f408e0ce40
This lets kernel modules which use genl netlink APIs serialize netlink processing. Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
#ifndef __LINUX_GENERIC_NETLINK_H
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#define __LINUX_GENERIC_NETLINK_H
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#include <linux/types.h>
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#include <linux/netlink.h>
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#define GENL_NAMSIZ 16 /* length of family name */
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#define GENL_MIN_ID NLMSG_MIN_TYPE
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#define GENL_MAX_ID 1023
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struct genlmsghdr {
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__u8 cmd;
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__u8 version;
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__u16 reserved;
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};
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#define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
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#define GENL_ADMIN_PERM 0x01
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#define GENL_CMD_CAP_DO 0x02
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#define GENL_CMD_CAP_DUMP 0x04
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#define GENL_CMD_CAP_HASPOL 0x08
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/*
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* List of reserved static generic netlink identifiers:
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*/
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#define GENL_ID_GENERATE 0
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#define GENL_ID_CTRL NLMSG_MIN_TYPE
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/**************************************************************************
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* Controller
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**************************************************************************/
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enum {
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CTRL_CMD_UNSPEC,
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CTRL_CMD_NEWFAMILY,
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CTRL_CMD_DELFAMILY,
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CTRL_CMD_GETFAMILY,
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CTRL_CMD_NEWOPS,
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CTRL_CMD_DELOPS,
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CTRL_CMD_GETOPS,
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CTRL_CMD_NEWMCAST_GRP,
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CTRL_CMD_DELMCAST_GRP,
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CTRL_CMD_GETMCAST_GRP, /* unused */
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__CTRL_CMD_MAX,
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};
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#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
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enum {
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CTRL_ATTR_UNSPEC,
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CTRL_ATTR_FAMILY_ID,
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CTRL_ATTR_FAMILY_NAME,
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CTRL_ATTR_VERSION,
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CTRL_ATTR_HDRSIZE,
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CTRL_ATTR_MAXATTR,
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CTRL_ATTR_OPS,
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CTRL_ATTR_MCAST_GROUPS,
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__CTRL_ATTR_MAX,
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};
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#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
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enum {
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CTRL_ATTR_OP_UNSPEC,
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CTRL_ATTR_OP_ID,
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CTRL_ATTR_OP_FLAGS,
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__CTRL_ATTR_OP_MAX,
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};
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#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
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enum {
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CTRL_ATTR_MCAST_GRP_UNSPEC,
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CTRL_ATTR_MCAST_GRP_NAME,
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CTRL_ATTR_MCAST_GRP_ID,
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__CTRL_ATTR_MCAST_GRP_MAX,
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};
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#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
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#ifdef __KERNEL__
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/* All generic netlink requests are serialized by a global lock. */
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extern void genl_lock(void);
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extern void genl_unlock(void);
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#endif /* __KERNEL__ */
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#endif /* __LINUX_GENERIC_NETLINK_H */
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