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Name	Size	Permission
9p	[ DIR ]	drwxr-xr-x
bluetooth	[ DIR ]	drwxr-xr-x
caif	[ DIR ]	drwxr-xr-x
iucv	[ DIR ]	drwxr-xr-x
netfilter	[ DIR ]	drwxr-xr-x
netns	[ DIR ]	drwxr-xr-x
nfc	[ DIR ]	drwxr-xr-x
phonet	[ DIR ]	drwxr-xr-x
sctp	[ DIR ]	drwxr-xr-x
tc_act	[ DIR ]	drwxr-xr-x
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Space.h	1.07 KB	-rw-r--r--
act_api.h	6.98 KB	-rw-r--r--
addrconf.h	14.1 KB	-rw-r--r--
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af_unix.h	2.59 KB	-rw-r--r--
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ah.h	382 B	-rw-r--r--
arp.h	2.09 KB	-rw-r--r--
atmclip.h	1.48 KB	-rw-r--r--
ax25.h	15.08 KB	-rw-r--r--
ax88796.h	1.31 KB	-rw-r--r--
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checksum.h	4.67 KB	-rw-r--r--
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codel.h	5.65 KB	-rw-r--r--
codel_impl.h	7.98 KB	-rw-r--r--
codel_qdisc.h	2.9 KB	-rw-r--r--
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garp.h	2.62 KB	-rw-r--r--
gen_stats.h	2.7 KB	-rw-r--r--
genetlink.h	12.24 KB	-rw-r--r--
geneve.h	1.85 KB	-rw-r--r--
gre.h	3.3 KB	-rw-r--r--
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gue.h	3.23 KB	-rw-r--r--
hwbm.h	969 B	-rw-r--r--
icmp.h	1.81 KB	-rw-r--r--
ieee80211_radiotap.h	13.04 KB	-rw-r--r--
ieee802154_netdev.h	9.86 KB	-rw-r--r--
if_inet6.h	6.19 KB	-rw-r--r--
ife.h	1.03 KB	-rw-r--r--
ila.h	291 B	-rw-r--r--
inet6_connection_sock.h	765 B	-rw-r--r--
inet6_hashtables.h	3.45 KB	-rw-r--r--
inet_common.h	2.27 KB	-rw-r--r--
inet_connection_sock.h	11.4 KB	-rw-r--r--
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inet_frag.h	4.9 KB	-rw-r--r--
inet_hashtables.h	13.77 KB	-rw-r--r--
inet_sock.h	9.48 KB	-rw-r--r--
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inetpeer.h	3.29 KB	-rw-r--r--
ip.h	21.92 KB	-rw-r--r--
ip6_checksum.h	2.69 KB	-rw-r--r--
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ip6_route.h	9.89 KB	-rw-r--r--
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ip_fib.h	13.57 KB	-rw-r--r--
ip_tunnels.h	14.69 KB	-rw-r--r--
ip_vs.h	48.06 KB	-rw-r--r--
ipcomp.h	659 B	-rw-r--r--
ipconfig.h	811 B	-rw-r--r--
ipv6.h	32.75 KB	-rw-r--r--
ipv6_frag.h	2.65 KB	-rw-r--r--
ipv6_stubs.h	2.74 KB	-rw-r--r--
ipx.h	4.28 KB	-rw-r--r--
iw_handler.h	20.91 KB	-rw-r--r--
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llc_sap.h	1.08 KB	-rw-r--r--
lwtunnel.h	6.54 KB	-rw-r--r--
mac80211.h	250.97 KB	-rw-r--r--
mac802154.h	14.88 KB	-rw-r--r--
mip6.h	1017 B	-rw-r--r--
mld.h	2.8 KB	-rw-r--r--
mpls.h	535 B	-rw-r--r--
mpls_iptunnel.h	430 B	-rw-r--r--
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ndisc.h	14.77 KB	-rw-r--r--
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net_failover.h	1023 B	-rw-r--r--
net_namespace.h	11.96 KB	-rw-r--r--
net_ratelimit.h	220 B	-rw-r--r--
netevent.h	1.02 KB	-rw-r--r--
netlabel.h	20.14 KB	-rw-r--r--
netlink.h	56.77 KB	-rw-r--r--
netprio_cgroup.h	1.03 KB	-rw-r--r--
netrom.h	7.71 KB	-rw-r--r--
nexthop.h	7.58 KB	-rw-r--r--
nl802154.h	12.09 KB	-rw-r--r--
nsh.h	12.31 KB	-rw-r--r--
p8022.h	447 B	-rw-r--r--
page_pool.h	6.46 KB	-rw-r--r--
ping.h	2.9 KB	-rw-r--r--
pkt_cls.h	19.61 KB	-rw-r--r--
pkt_sched.h	4.61 KB	-rw-r--r--
pptp.h	557 B	-rw-r--r--
protocol.h	3.82 KB	-rw-r--r--
psample.h	888 B	-rw-r--r--
psnap.h	351 B	-rw-r--r--
raw.h	2.09 KB	-rw-r--r--
rawv6.h	854 B	-rw-r--r--
red.h	10.45 KB	-rw-r--r--
regulatory.h	10.89 KB	-rw-r--r--
request_sock.h	6.37 KB	-rw-r--r--
rose.h	7.62 KB	-rw-r--r--
route.h	10.87 KB	-rw-r--r--
rsi_91x.h	1.67 KB	-rw-r--r--
rtnetlink.h	6.28 KB	-rw-r--r--
rtnh.h	859 B	-rw-r--r--
sch_generic.h	32.97 KB	-rw-r--r--
scm.h	3.75 KB	-rw-r--r--
secure_seq.h	855 B	-rw-r--r--
seg6.h	1.57 KB	-rw-r--r--
seg6_hmac.h	1.44 KB	-rw-r--r--
seg6_local.h	644 B	-rw-r--r--
slhc_vj.h	6.67 KB	-rw-r--r--
smc.h	2.18 KB	-rw-r--r--
snmp.h	5.02 KB	-rw-r--r--
sock.h	75.38 KB	-rw-r--r--
sock_reuseport.h	1.58 KB	-rw-r--r--
stp.h	383 B	-rw-r--r--
strparser.h	4.03 KB	-rw-r--r--
switchdev.h	8 KB	-rw-r--r--
tcp.h	70.49 KB	-rw-r--r--
tcp_states.h	1.2 KB	-rw-r--r--
timewait_sock.h	925 B	-rw-r--r--
tipc.h	2.35 KB	-rw-r--r--
tls.h	19.86 KB	-rw-r--r--
transp_v6.h	2.05 KB	-rw-r--r--
tso.h	515 B	-rw-r--r--
tun_proto.h	988 B	-rw-r--r--
udp.h	14.71 KB	-rw-r--r--
udp_tunnel.h	5.37 KB	-rw-r--r--
udplite.h	3.67 KB	-rw-r--r--
vsock_addr.h	657 B	-rw-r--r--
vxlan.h	13.45 KB	-rw-r--r--
wext.h	1.47 KB	-rw-r--r--
wimax.h	19.36 KB	-rw-r--r--
x25.h	9.43 KB	-rw-r--r--
x25device.h	387 B	-rw-r--r--
xdp.h	5.32 KB	-rw-r--r--
xdp_priv.h	446 B	-rw-r--r--
xdp_sock.h	8.26 KB	-rw-r--r--
xfrm.h	53.07 KB	-rw-r--r--

Code Editor : genetlink.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_GENERIC_NETLINK_H
#define __NET_GENERIC_NETLINK_H

#include <linux/genetlink.h>
#include <net/netlink.h>
#include <net/net_namespace.h>

#define GENLMSG_DEFAULT_SIZE (NLMSG_DEFAULT_SIZE - GENL_HDRLEN)

/**
 * struct genl_multicast_group - generic netlink multicast group
 * @name: name of the multicast group, names are per-family
 * @cap_sys_admin: whether %CAP_SYS_ADMIN is required for binding
 */
struct genl_multicast_group {
	char			name[GENL_NAMSIZ];
	u8			flags;
	u8			cap_sys_admin:1;
};

struct genl_ops;
struct genl_info;

/**
 * struct genl_family - generic netlink family
 * @id: protocol family identifier (private)
 * @hdrsize: length of user specific header in bytes
 * @name: name of family
 * @version: protocol version
 * @maxattr: maximum number of attributes supported
 * @policy: netlink policy
 * @netnsok: set to true if the family can handle network
 *	namespaces and should be presented in all of them
 * @parallel_ops: operations can be called in parallel and aren't
 *	synchronized by the core genetlink code
 * @pre_doit: called before an operation's doit callback, it may
 *	do additional, common, filtering and return an error
 * @post_doit: called after an operation's doit callback, it may
 *	undo operations done by pre_doit, for example release locks
 * @attrbuf: buffer to store parsed attributes (private)
 * @mcgrps: multicast groups used by this family
 * @n_mcgrps: number of multicast groups
 * @mcgrp_offset: starting number of multicast group IDs in this family
 *	(private)
 * @ops: the operations supported by this family
 * @n_ops: number of operations supported by this family
 */
struct genl_family {
	int			id;		/* private */
	unsigned int		hdrsize;
	char			name[GENL_NAMSIZ];
	unsigned int		version;
	unsigned int		maxattr;
	bool			netnsok;
	bool			parallel_ops;
	const struct nla_policy *policy;
	int			(*pre_doit)(const struct genl_ops *ops,
					    struct sk_buff *skb,
					    struct genl_info *info);
	void			(*post_doit)(const struct genl_ops *ops,
					     struct sk_buff *skb,
					     struct genl_info *info);
	struct nlattr **	attrbuf;	/* private */
	const struct genl_ops *	ops;
	const struct genl_multicast_group *mcgrps;
	unsigned int		n_ops;
	unsigned int		n_mcgrps;
	unsigned int		mcgrp_offset;	/* private */
	struct module		*module;
};

struct nlattr **genl_family_attrbuf(const struct genl_family *family);

/**
 * struct genl_info - receiving information
 * @snd_seq: sending sequence number
 * @snd_portid: netlink portid of sender
 * @nlhdr: netlink message header
 * @genlhdr: generic netlink message header
 * @userhdr: user specific header
 * @attrs: netlink attributes
 * @_net: network namespace
 * @user_ptr: user pointers
 * @extack: extended ACK report struct
 */
struct genl_info {
	u32			snd_seq;
	u32			snd_portid;
	struct nlmsghdr *	nlhdr;
	struct genlmsghdr *	genlhdr;
	void *			userhdr;
	struct nlattr **	attrs;
	possible_net_t		_net;
	void *			user_ptr[2];
	struct netlink_ext_ack *extack;
};

static inline struct net *genl_info_net(struct genl_info *info)
{
	return read_pnet(&info->_net);
}

static inline void genl_info_net_set(struct genl_info *info, struct net *net)
{
	write_pnet(&info->_net, net);
}

#define GENL_SET_ERR_MSG(info, msg) NL_SET_ERR_MSG((info)->extack, msg)

static inline int genl_err_attr(struct genl_info *info, int err,
				const struct nlattr *attr)
{
	info->extack->bad_attr = attr;

return err;
}

enum genl_validate_flags {
	GENL_DONT_VALIDATE_STRICT		= BIT(0),
	GENL_DONT_VALIDATE_DUMP			= BIT(1),
	GENL_DONT_VALIDATE_DUMP_STRICT		= BIT(2),
};

/**
 * struct genl_ops - generic netlink operations
 * @cmd: command identifier
 * @internal_flags: flags used by the family
 * @flags: flags
 * @doit: standard command callback
 * @start: start callback for dumps
 * @dumpit: callback for dumpers
 * @done: completion callback for dumps
 */
struct genl_ops {
	int		       (*doit)(struct sk_buff *skb,
				       struct genl_info *info);
	int		       (*start)(struct netlink_callback *cb);
	int		       (*dumpit)(struct sk_buff *skb,
					 struct netlink_callback *cb);
	int		       (*done)(struct netlink_callback *cb);
	u8			cmd;
	u8			internal_flags;
	u8			flags;
	u8			validate;
};

int genl_register_family(struct genl_family *family);
int genl_unregister_family(const struct genl_family *family);
void genl_notify(const struct genl_family *family, struct sk_buff *skb,
		 struct genl_info *info, u32 group, gfp_t flags);

void *genlmsg_put(struct sk_buff *skb, u32 portid, u32 seq,
		  const struct genl_family *family, int flags, u8 cmd);

/**
 * genlmsg_nlhdr - Obtain netlink header from user specified header
 * @user_hdr: user header as returned from genlmsg_put()
 *
 * Returns pointer to netlink header.
 */
static inline struct nlmsghdr *genlmsg_nlhdr(void *user_hdr)
{
	return (struct nlmsghdr *)((char *)user_hdr -
				   GENL_HDRLEN -
				   NLMSG_HDRLEN);
}

/**
 * genlmsg_parse_deprecated - parse attributes of a genetlink message
 * @nlh: netlink message header
 * @family: genetlink message family
 * @tb: destination array with maxtype+1 elements
 * @maxtype: maximum attribute type to be expected
 * @policy: validation policy
 * @extack: extended ACK report struct
 */
static inline int genlmsg_parse_deprecated(const struct nlmsghdr *nlh,
					   const struct genl_family *family,
					   struct nlattr *tb[], int maxtype,
					   const struct nla_policy *policy,
					   struct netlink_ext_ack *extack)
{
	return __nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
			     policy, NL_VALIDATE_LIBERAL, extack);
}

/**
 * genlmsg_parse - parse attributes of a genetlink message
 * @nlh: netlink message header
 * @family: genetlink message family
 * @tb: destination array with maxtype+1 elements
 * @maxtype: maximum attribute type to be expected
 * @policy: validation policy
 * @extack: extended ACK report struct
 */
static inline int genlmsg_parse(const struct nlmsghdr *nlh,
				const struct genl_family *family,
				struct nlattr *tb[], int maxtype,
				const struct nla_policy *policy,
				struct netlink_ext_ack *extack)
{
	return __nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
			     policy, NL_VALIDATE_STRICT, extack);
}

/**
 * genl_dump_check_consistent - check if sequence is consistent and advertise if not
 * @cb: netlink callback structure that stores the sequence number
 * @user_hdr: user header as returned from genlmsg_put()
 *
 * Cf. nl_dump_check_consistent(), this just provides a wrapper to make it
 * simpler to use with generic netlink.
 */
static inline void genl_dump_check_consistent(struct netlink_callback *cb,
					      void *user_hdr)
{
	nl_dump_check_consistent(cb, genlmsg_nlhdr(user_hdr));
}

/**
 * genlmsg_put_reply - Add generic netlink header to a reply message
 * @skb: socket buffer holding the message
 * @info: receiver info
 * @family: generic netlink family
 * @flags: netlink message flags
 * @cmd: generic netlink command
 *
 * Returns pointer to user specific header
 */
static inline void *genlmsg_put_reply(struct sk_buff *skb,
				      struct genl_info *info,
				      const struct genl_family *family,
				      int flags, u8 cmd)
{
	return genlmsg_put(skb, info->snd_portid, info->snd_seq, family,
			   flags, cmd);
}

/**
 * genlmsg_end - Finalize a generic netlink message
 * @skb: socket buffer the message is stored in
 * @hdr: user specific header
 */
static inline void genlmsg_end(struct sk_buff *skb, void *hdr)
{
	nlmsg_end(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
}

/**
 * genlmsg_cancel - Cancel construction of a generic netlink message
 * @skb: socket buffer the message is stored in
 * @hdr: generic netlink message header
 */
static inline void genlmsg_cancel(struct sk_buff *skb, void *hdr)
{
	if (hdr)
		nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
}

/**
 * genlmsg_multicast_netns - multicast a netlink message to a specific netns
 * @family: the generic netlink family
 * @net: the net namespace
 * @skb: netlink message as socket buffer
 * @portid: own netlink portid to avoid sending to yourself
 * @group: offset of multicast group in groups array
 * @flags: allocation flags
 */
static inline int genlmsg_multicast_netns(const struct genl_family *family,
					  struct net *net, struct sk_buff *skb,
					  u32 portid, unsigned int group, gfp_t flags)
{
	if (WARN_ON_ONCE(group >= family->n_mcgrps))
		return -EINVAL;
	group = family->mcgrp_offset + group;
	return nlmsg_multicast(net->genl_sock, skb, portid, group, flags);
}

/**
 * genlmsg_multicast - multicast a netlink message to the default netns
 * @family: the generic netlink family
 * @skb: netlink message as socket buffer
 * @portid: own netlink portid to avoid sending to yourself
 * @group: offset of multicast group in groups array
 * @flags: allocation flags
 */
static inline int genlmsg_multicast(const struct genl_family *family,
				    struct sk_buff *skb, u32 portid,
				    unsigned int group, gfp_t flags)
{
	return genlmsg_multicast_netns(family, &init_net, skb,
				       portid, group, flags);
}

/**
 * genlmsg_multicast_allns - multicast a netlink message to all net namespaces
 * @family: the generic netlink family
 * @skb: netlink message as socket buffer
 * @portid: own netlink portid to avoid sending to yourself
 * @group: offset of multicast group in groups array
 * @flags: allocation flags
 *
 * This function must hold the RTNL or rcu_read_lock().
 */
int genlmsg_multicast_allns(const struct genl_family *family,
			    struct sk_buff *skb, u32 portid,
			    unsigned int group, gfp_t flags);

/**
 * genlmsg_unicast - unicast a netlink message
 * @skb: netlink message as socket buffer
 * @portid: netlink portid of the destination socket
 */
static inline int genlmsg_unicast(struct net *net, struct sk_buff *skb, u32 portid)
{
	return nlmsg_unicast(net->genl_sock, skb, portid);
}

/**
 * genlmsg_reply - reply to a request
 * @skb: netlink message to be sent back
 * @info: receiver information
 */
static inline int genlmsg_reply(struct sk_buff *skb, struct genl_info *info)
{
	return genlmsg_unicast(genl_info_net(info), skb, info->snd_portid);
}

/**
 * gennlmsg_data - head of message payload
 * @gnlh: genetlink message header
 */
static inline void *genlmsg_data(const struct genlmsghdr *gnlh)
{
	return ((unsigned char *) gnlh + GENL_HDRLEN);
}

/**
 * genlmsg_len - length of message payload
 * @gnlh: genetlink message header
 */
static inline int genlmsg_len(const struct genlmsghdr *gnlh)
{
	struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh -
							NLMSG_HDRLEN);
	return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);
}

/**
 * genlmsg_msg_size - length of genetlink message not including padding
 * @payload: length of message payload
 */
static inline int genlmsg_msg_size(int payload)
{
	return GENL_HDRLEN + payload;
}

/**
 * genlmsg_total_size - length of genetlink message including padding
 * @payload: length of message payload
 */
static inline int genlmsg_total_size(int payload)
{
	return NLMSG_ALIGN(genlmsg_msg_size(payload));
}

/**
 * genlmsg_new - Allocate a new generic netlink message
 * @payload: size of the message payload
 * @flags: the type of memory to allocate.
 */
static inline struct sk_buff *genlmsg_new(size_t payload, gfp_t flags)
{
	return nlmsg_new(genlmsg_total_size(payload), flags);
}

/**
 * genl_set_err - report error to genetlink broadcast listeners
 * @family: the generic netlink family
 * @net: the network namespace to report the error to
 * @portid: the PORTID of a process that we want to skip (if any)
 * @group: the broadcast group that will notice the error
 * 	(this is the offset of the multicast group in the groups array)
 * @code: error code, must be negative (as usual in kernelspace)
 *
 * This function returns the number of broadcast listeners that have set the
 * NETLINK_RECV_NO_ENOBUFS socket option.
 */
static inline int genl_set_err(const struct genl_family *family,
			       struct net *net, u32 portid,
			       u32 group, int code)
{
	if (WARN_ON_ONCE(group >= family->n_mcgrps))
		return -EINVAL;
	group = family->mcgrp_offset + group;
	return netlink_set_err(net->genl_sock, portid, group, code);
}

static inline int genl_has_listeners(const struct genl_family *family,
				     struct net *net, unsigned int group)
{
	if (WARN_ON_ONCE(group >= family->n_mcgrps))
		return -EINVAL;
	group = family->mcgrp_offset + group;
	return netlink_has_listeners(net->genl_sock, group);
}
#endif	/* __NET_GENERIC_NETLINK_H */

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Code Editor : genetlink.h