[ovs.git] / datapath / linux / compat / include / net / genetlink.h

#ifndef __NET_GENERIC_NETLINK_WRAPPER_H
#define __NET_GENERIC_NETLINK_WRAPPER_H 1

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

#ifndef HAVE_GENL_NOTIFY_TAKES_FAMILY
struct rpl_genl_family {
	struct genl_family	compat_family;
	unsigned int            id;
	unsigned int            hdrsize;
	char                    name[GENL_NAMSIZ];
	unsigned int            version;
	unsigned int            maxattr;
	bool                    netnsok;
	bool                    parallel_ops;
	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;            /* private */
	const struct genl_multicast_group *mcgrps; /* private */
	unsigned int            n_ops;          /* private */
	unsigned int            n_mcgrps;       /* private */
	unsigned int            mcgrp_offset;   /* private */
	struct list_head        family_list;    /* private */
	struct module           *module;
};

#define genl_family rpl_genl_family
static inline void *rpl_genlmsg_put(struct sk_buff *skb, u32 portid, u32 seq,
				    struct genl_family *family, int flags, u8 cmd)
{
	return genlmsg_put(skb, portid, seq, &family->compat_family, flags, cmd);
}

#define genlmsg_put rpl_genlmsg_put

static inline int rpl_genl_unregister_family(struct genl_family *family)
{
	return genl_unregister_family(&family->compat_family);
}
#define genl_unregister_family rpl_genl_unregister_family

#define genl_set_err rpl_genl_set_err
static inline int genl_set_err(struct genl_family *family, struct net *net,
			       u32 portid, u32 group, int code)
{
#ifdef HAVE_VOID_NETLINK_SET_ERR
	netlink_set_err(net->genl_sock, portid, group, code);
	return 0;
#else
	return netlink_set_err(net->genl_sock, portid, group, code);
#endif
}

#define genlmsg_multicast_netns rpl_genlmsg_multicast_netns
static inline int genlmsg_multicast_netns(struct genl_family *family,
					  struct net *net, struct sk_buff *skb,
					  u32 portid, unsigned int group, gfp_t flags)
{
	return nlmsg_multicast(net->genl_sock, skb, portid, group, flags);
}


#define __genl_register_family rpl___genl_register_family
int rpl___genl_register_family(struct genl_family *family);

#define genl_register_family rpl_genl_register_family
static inline int rpl_genl_register_family(struct genl_family *family)
{
	family->module = THIS_MODULE;
	return rpl___genl_register_family(family);
}
#endif

#ifdef HAVE_GENL_NOTIFY_TAKES_NET
#define genl_notify rpl_genl_notify
void rpl_genl_notify(struct genl_family *family, struct sk_buff *skb,
		     struct genl_info *info , u32 group, gfp_t flags);
#endif

#ifndef HAVE_GENL_HAS_LISTENERS
static inline int genl_has_listeners(struct genl_family *family,
				     struct net *net, unsigned int group)
{
#ifdef HAVE_MCGRP_OFFSET
	if (WARN_ON_ONCE(group >= family->n_mcgrps))
		return -EINVAL;
	group = family->mcgrp_offset + group;
#endif
	return netlink_has_listeners(net->genl_sock, group);
}
#else

#ifndef HAVE_GENL_HAS_LISTENERS_TAKES_NET
static inline int rpl_genl_has_listeners(struct genl_family *family,
				         struct net *net, unsigned int group)
{
#ifdef HAVE_GENL_NOTIFY_TAKES_FAMILY
    return genl_has_listeners(family, net->genl_sock, group);
#else
    return genl_has_listeners(&family->compat_family, net->genl_sock, group);
#endif
}

#define genl_has_listeners rpl_genl_has_listeners
#endif

#endif /* HAVE_GENL_HAS_LISTENERS */

#ifndef HAVE_NETLINK_EXT_ACK
struct netlink_ext_ack;

static inline int rpl_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)
{
#ifdef HAVE_GENLMSG_PARSE
	return genlmsg_parse(nlh, family, tb, maxtype, policy);
#else
	return nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
			   policy);
#endif
}
#define genlmsg_parse rpl_genlmsg_parse
#endif

#endif /* genetlink.h */
Commit	Line	Data
064af421 BP	1	#ifndef __NET_GENERIC_NETLINK_WRAPPER_H
	2	#define __NET_GENERIC_NETLINK_WRAPPER_H 1
	3
aaff4b55	4	#include <linux/version.h>
064af421	5	#include <linux/netlink.h>
8ce41058	6	#include <net/net_namespace.h>
b3dcb73c	7	#include_next <net/genetlink.h>
aaff4b55	8
13dd4a97	9	#ifndef HAVE_GENL_NOTIFY_TAKES_FAMILY
cb25142c PS	10	struct rpl_genl_family {
	11	struct genl_family compat_family;
	12	unsigned int id;
	13	unsigned int hdrsize;
	14	char name[GENL_NAMSIZ];
	15	unsigned int version;
	16	unsigned int maxattr;
	17	bool netnsok;
	18	bool parallel_ops;
	19	int (pre_doit)(const struct genl_ops ops,
	20	struct sk_buff *skb,
	21	struct genl_info *info);
	22	void (post_doit)(const struct genl_ops ops,
	23	struct sk_buff *skb,
	24	struct genl_info *info);
	25	struct nlattr ** attrbuf; /* private */
	26	const struct genl_ops * ops; /* private */
	27	const struct genl_multicast_group mcgrps; / private */
	28	unsigned int n_ops; /* private */
	29	unsigned int n_mcgrps; /* private */
	30	unsigned int mcgrp_offset; /* private */
	31	struct list_head family_list; /* private */
	32	struct module *module;
	33	};
	34
	35	#define genl_family rpl_genl_family
cb25142c PS	36	static inline void rpl_genlmsg_put(struct sk_buff skb, u32 portid, u32 seq,
	37	struct genl_family *family, int flags, u8 cmd)
	38	{
	39	return genlmsg_put(skb, portid, seq, &family->compat_family, flags, cmd);
	40	}
	41
	42	#define genlmsg_put rpl_genlmsg_put
	43
	44	static inline int rpl_genl_unregister_family(struct genl_family *family)
	45	{
	46	return genl_unregister_family(&family->compat_family);
	47	}
	48	#define genl_unregister_family rpl_genl_unregister_family
	49
	50	#define genl_set_err rpl_genl_set_err
	51	static inline int genl_set_err(struct genl_family family, struct net net,
	52	u32 portid, u32 group, int code)
	53	{
6dbd98e6	54	#ifdef HAVE_VOID_NETLINK_SET_ERR
cb25142c PS	55	netlink_set_err(net->genl_sock, portid, group, code);
	56	return 0;
	57	#else
	58	return netlink_set_err(net->genl_sock, portid, group, code);
	59	#endif
	60	}
	61
	62	#define genlmsg_multicast_netns rpl_genlmsg_multicast_netns
	63	static inline int genlmsg_multicast_netns(struct genl_family *family,
	64	struct net net, struct sk_buff skb,
	65	u32 portid, unsigned int group, gfp_t flags)
	66	{
	67	return nlmsg_multicast(net->genl_sock, skb, portid, group, flags);
	68	}
	69
	70
	71	#define __genl_register_family rpl___genl_register_family
	72	int rpl___genl_register_family(struct genl_family *family);
	73
	74	#define genl_register_family rpl_genl_register_family
	75	static inline int rpl_genl_register_family(struct genl_family *family)
	76	{
	77	family->module = THIS_MODULE;
	78	return rpl___genl_register_family(family);
	79	}
0643a78b	80	#endif
cb25142c	81
0643a78b PS	82	#ifdef HAVE_GENL_NOTIFY_TAKES_NET
	83	#define genl_notify rpl_genl_notify
	84	void rpl_genl_notify(struct genl_family family, struct sk_buff skb,
	85	struct genl_info *info , u32 group, gfp_t flags);
cb25142c	86	#endif
aaff4b55	87
114fce23 SG	88	#ifndef HAVE_GENL_HAS_LISTENERS
114fce23 SG	89	static inline int genl_has_listeners(struct genl_family *family,
6233a1bd	90	struct net *net, unsigned int group)
114fce23 SG	91	{
	92	#ifdef HAVE_MCGRP_OFFSET
	93	if (WARN_ON_ONCE(group >= family->n_mcgrps))
	94	return -EINVAL;
	95	group = family->mcgrp_offset + group;
114fce23	96	#endif
6233a1bd	97	return netlink_has_listeners(net->genl_sock, group);
114fce23	98	}
6233a1bd TG	99	#else
	100
	101	#ifndef HAVE_GENL_HAS_LISTENERS_TAKES_NET
	102	static inline int rpl_genl_has_listeners(struct genl_family *family,
	103	struct net *net, unsigned int group)
	104	{
13dd4a97	105	#ifdef HAVE_GENL_NOTIFY_TAKES_FAMILY
6233a1bd	106	return genl_has_listeners(family, net->genl_sock, group);
13dd4a97 JS	107	#else
	108	return genl_has_listeners(&family->compat_family, net->genl_sock, group);
	109	#endif
6233a1bd TG	110	}
	111
	112	#define genl_has_listeners rpl_genl_has_listeners
114fce23 SG	113	#endif
114fce23 SG	114
6233a1bd TG	115	#endif /* HAVE_GENL_HAS_LISTENERS */
6233a1bd TG	116
15702dc9 JB	117	#ifndef HAVE_NETLINK_EXT_ACK
	118	struct netlink_ext_ack;
	119
	120	static inline int rpl_genlmsg_parse(const struct nlmsghdr *nlh,
	121	const struct genl_family *family,
	122	struct nlattr *tb[], int maxtype,
	123	const struct nla_policy *policy,
	124	struct netlink_ext_ack *extack)
c623ba49	125	{
15702dc9 JB	126	#ifdef HAVE_GENLMSG_PARSE
	127	return genlmsg_parse(nlh, family, tb, maxtype, policy);
	128	#else
c623ba49 JS	129	return nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
c623ba49 JS	130	policy);
15702dc9	131	#endif
c623ba49	132	}
15702dc9	133	#define genlmsg_parse rpl_genlmsg_parse
c623ba49 JS	134	#endif
c623ba49 JS	135
064af421	136	#endif /* genetlink.h */