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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MROUTE_H
#define __LINUX_MROUTE_H
#include <linux/in.h>
#include <linux/pim.h>
#include <net/fib_rules.h>
#include <net/fib_notifier.h>
#include <uapi/linux/mroute.h>
#include <linux/mroute_base.h>
#ifdef CONFIG_IP_MROUTE
static inline int ip_mroute_opt(int opt)
{
return opt >= MRT_BASE && opt <= MRT_MAX;
}
int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
int ip_mr_init(void);
bool ipmr_rule_default(const struct fib_rule *rule);
#else
static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
char __user *optval, unsigned int optlen)
{
return -ENOPROTOOPT;
}
static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
char __user *optval, int __user *optlen)
{
return -ENOPROTOOPT;
}
static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
{
return -ENOIOCTLCMD;
}
static inline int ip_mr_init(void)
{
return 0;
}
static inline int ip_mroute_opt(int opt)
{
return 0;
}
static inline bool ipmr_rule_default(const struct fib_rule *rule)
{
return true;
}
#endif
struct vif_entry_notifier_info {
struct fib_notifier_info info;
struct net_device *dev;
vifi_t vif_index;
unsigned short vif_flags;
u32 tb_id;
};
#define VIFF_STATIC 0x8000
/* mfc_flags:
* MFC_STATIC - the entry was added statically (not by a routing daemon)
* MFC_OFFLOAD - the entry was offloaded to the hardware
*/
enum {
MFC_STATIC = BIT(0),
MFC_OFFLOAD = BIT(1),
};
struct mfc_cache_cmp_arg {
__be32 mfc_mcastgrp;
__be32 mfc_origin;
};
/**
* struct mfc_cache - multicast routing entries
* @_c: Common multicast routing information; has to be first [for casting]
* @mfc_mcastgrp: destination multicast group address
* @mfc_origin: source address
* @cmparg: used for rhashtable comparisons
*/
struct mfc_cache {
struct mr_mfc _c;
union {
struct {
__be32 mfc_mcastgrp;
__be32 mfc_origin;
};
struct mfc_cache_cmp_arg cmparg;
};
};
struct mfc_entry_notifier_info {
struct fib_notifier_info info;
struct mfc_cache *mfc;
u32 tb_id;
};
struct rtmsg;
int ipmr_get_route(struct net *net, struct sk_buff *skb,
__be32 saddr, __be32 daddr,
struct rtmsg *rtm, u32 portid);
#ifdef CONFIG_IP_MROUTE
void ipmr_cache_free(struct mfc_cache *mfc_cache);
#else
static inline void ipmr_cache_free(struct mfc_cache *mfc_cache)
{
}
#endif
static inline void ipmr_cache_put(struct mfc_cache *c)
{
if (refcount_dec_and_test(&c->_c.mfc_un.res.refcount))
ipmr_cache_free(c);
}
static inline void ipmr_cache_hold(struct mfc_cache *c)
{
refcount_inc(&c->_c.mfc_un.res.refcount);
}
#endif
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