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#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 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 */
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