[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>

/*
 * 15e473046cb6e5d18a4d0057e61d76315230382b renames pid to portid
 * the affected structures are
 * netlink_skb_parms::pid -> portid
 * genl_info::snd_pid -> snd_portid
 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0)
#define snd_portid snd_pid
#define portid pid
#endif

#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
#define genl_notify rpl_genl_notify
void rpl_genl_notify(struct genl_family *family,
		     struct sk_buff *skb, struct net *net, u32 portid, u32 group,
		     struct nlmsghdr *nlh, gfp_t flags);

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)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
	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

#ifndef HAVE_GENLMSG_NEW_UNICAST
static inline struct sk_buff *genlmsg_new_unicast(size_t payload,
						  struct genl_info *info,
						  gfp_t flags)
{
	return genlmsg_new(payload, 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_GENLMSG_PARSE
static inline int genlmsg_parse(const struct nlmsghdr *nlh,
				const struct genl_family *family,
				struct nlattr *tb[], int maxtype,
				const struct nla_policy *policy)
{
	return nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
			   policy);
}
#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
28aea917 IY	9	/*
	10	* 15e473046cb6e5d18a4d0057e61d76315230382b renames pid to portid
	11	* the affected structures are
	12	* netlink_skb_parms::pid -> portid
	13	* genl_info::snd_pid -> snd_portid
	14	*/
	15	#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0)
	16	#define snd_portid snd_pid
	17	#define portid pid
	18	#endif
	19
13dd4a97	20	#ifndef HAVE_GENL_NOTIFY_TAKES_FAMILY
cb25142c PS	21	struct rpl_genl_family {
	22	struct genl_family compat_family;
	23	unsigned int id;
	24	unsigned int hdrsize;
	25	char name[GENL_NAMSIZ];
	26	unsigned int version;
	27	unsigned int maxattr;
	28	bool netnsok;
	29	bool parallel_ops;
	30	int (pre_doit)(const struct genl_ops ops,
	31	struct sk_buff *skb,
	32	struct genl_info *info);
	33	void (post_doit)(const struct genl_ops ops,
	34	struct sk_buff *skb,
	35	struct genl_info *info);
	36	struct nlattr ** attrbuf; /* private */
	37	const struct genl_ops * ops; /* private */
	38	const struct genl_multicast_group mcgrps; / private */
	39	unsigned int n_ops; /* private */
	40	unsigned int n_mcgrps; /* private */
	41	unsigned int mcgrp_offset; /* private */
	42	struct list_head family_list; /* private */
	43	struct module *module;
	44	};
	45
	46	#define genl_family rpl_genl_family
	47	#define genl_notify rpl_genl_notify
bedf02f4 AW	48	void rpl_genl_notify(struct genl_family *family,
	49	struct sk_buff skb, struct net net, u32 portid, u32 group,
	50	struct nlmsghdr *nlh, gfp_t flags);
cb25142c PS	51
	52	static inline void rpl_genlmsg_put(struct sk_buff skb, u32 portid, u32 seq,
	53	struct genl_family *family, int flags, u8 cmd)
	54	{
	55	return genlmsg_put(skb, portid, seq, &family->compat_family, flags, cmd);
	56	}
	57
	58	#define genlmsg_put rpl_genlmsg_put
	59
	60	static inline int rpl_genl_unregister_family(struct genl_family *family)
	61	{
	62	return genl_unregister_family(&family->compat_family);
	63	}
	64	#define genl_unregister_family rpl_genl_unregister_family
	65
	66	#define genl_set_err rpl_genl_set_err
	67	static inline int genl_set_err(struct genl_family family, struct net net,
	68	u32 portid, u32 group, int code)
	69	{
	70	#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
	71	netlink_set_err(net->genl_sock, portid, group, code);
	72	return 0;
	73	#else
	74	return netlink_set_err(net->genl_sock, portid, group, code);
	75	#endif
	76	}
	77
	78	#define genlmsg_multicast_netns rpl_genlmsg_multicast_netns
	79	static inline int genlmsg_multicast_netns(struct genl_family *family,
	80	struct net net, struct sk_buff skb,
	81	u32 portid, unsigned int group, gfp_t flags)
	82	{
	83	return nlmsg_multicast(net->genl_sock, skb, portid, group, flags);
	84	}
	85
	86
	87	#define __genl_register_family rpl___genl_register_family
	88	int rpl___genl_register_family(struct genl_family *family);
	89
	90	#define genl_register_family rpl_genl_register_family
	91	static inline int rpl_genl_register_family(struct genl_family *family)
	92	{
	93	family->module = THIS_MODULE;
	94	return rpl___genl_register_family(family);
	95	}
	96
	97	#endif
aaff4b55	98
705e9260	99	#ifndef HAVE_GENLMSG_NEW_UNICAST
6c75562d JG	100	static inline struct sk_buff *genlmsg_new_unicast(size_t payload,
	101	struct genl_info *info,
	102	gfp_t flags)
	103	{
	104	return genlmsg_new(payload, flags);
	105	}
	106	#endif
	107
114fce23 SG	108	#ifndef HAVE_GENL_HAS_LISTENERS
114fce23 SG	109	static inline int genl_has_listeners(struct genl_family *family,
6233a1bd	110	struct net *net, unsigned int group)
114fce23 SG	111	{
	112	#ifdef HAVE_MCGRP_OFFSET
	113	if (WARN_ON_ONCE(group >= family->n_mcgrps))
	114	return -EINVAL;
	115	group = family->mcgrp_offset + group;
114fce23	116	#endif
6233a1bd	117	return netlink_has_listeners(net->genl_sock, group);
114fce23	118	}
6233a1bd TG	119	#else
	120
	121	#ifndef HAVE_GENL_HAS_LISTENERS_TAKES_NET
	122	static inline int rpl_genl_has_listeners(struct genl_family *family,
	123	struct net *net, unsigned int group)
	124	{
13dd4a97	125	#ifdef HAVE_GENL_NOTIFY_TAKES_FAMILY
6233a1bd	126	return genl_has_listeners(family, net->genl_sock, group);
13dd4a97 JS	127	#else
	128	return genl_has_listeners(&family->compat_family, net->genl_sock, group);
	129	#endif
6233a1bd TG	130	}
	131
	132	#define genl_has_listeners rpl_genl_has_listeners
114fce23 SG	133	#endif
114fce23 SG	134
6233a1bd TG	135	#endif /* HAVE_GENL_HAS_LISTENERS */
6233a1bd TG	136
c623ba49 JS	137	#ifndef HAVE_GENLMSG_PARSE
	138	static inline int genlmsg_parse(const struct nlmsghdr *nlh,
	139	const struct genl_family *family,
	140	struct nlattr *tb[], int maxtype,
	141	const struct nla_policy *policy)
	142	{
	143	return nlmsg_parse(nlh, family->hdrsize + GENL_HDRLEN, tb, maxtype,
	144	policy);
	145	}
	146	#endif
	147
064af421	148	#endif /* genetlink.h */