1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_MROUTE_H
3 #define __LINUX_MROUTE_H
7 #include <linux/rhashtable.h>
9 #include <net/fib_rules.h>
10 #include <net/fib_notifier.h>
11 #include <uapi/linux/mroute.h>
13 #ifdef CONFIG_IP_MROUTE
14 static inline int ip_mroute_opt(int opt)
16 return opt >= MRT_BASE && opt <= MRT_MAX;
19 int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
20 int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
21 int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
22 int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
24 bool ipmr_rule_default(const struct fib_rule *rule);
26 static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
27 char __user *optval, unsigned int optlen)
32 static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
33 char __user *optval, int __user *optlen)
38 static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
43 static inline int ip_mr_init(void)
48 static inline int ip_mroute_opt(int opt)
53 static inline bool ipmr_rule_default(const struct fib_rule *rule)
60 struct net_device *dev; /* Device we are using */
61 struct netdev_phys_item_id dev_parent_id; /* Device parent ID */
62 unsigned long bytes_in,bytes_out;
63 unsigned long pkt_in,pkt_out; /* Statistics */
64 unsigned long rate_limit; /* Traffic shaping (NI) */
65 unsigned char threshold; /* TTL threshold */
66 unsigned short flags; /* Control flags */
67 __be32 local,remote; /* Addresses(remote for tunnels)*/
68 int link; /* Physical interface index */
71 struct vif_entry_notifier_info {
72 struct fib_notifier_info info;
73 struct net_device *dev;
75 unsigned short vif_flags;
79 #define VIFF_STATIC 0x8000
81 #define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
84 struct list_head list;
87 struct sock __rcu *mroute_sk;
88 struct timer_list ipmr_expire_timer;
89 struct list_head mfc_unres_queue;
90 struct vif_device vif_table[MAXVIFS];
91 struct rhltable mfc_hash;
92 struct list_head mfc_cache_list;
94 atomic_t cache_resolve_queue_len;
95 bool mroute_do_assert;
97 int mroute_reg_vif_num;
101 * MFC_STATIC - the entry was added statically (not by a routing daemon)
102 * MFC_OFFLOAD - the entry was offloaded to the hardware
106 MFC_OFFLOAD = BIT(1),
109 struct mfc_cache_cmp_arg {
115 * struct mfc_cache - multicast routing entries
116 * @mnode: rhashtable list
117 * @mfc_mcastgrp: destination multicast group address
118 * @mfc_origin: source address
119 * @cmparg: used for rhashtable comparisons
120 * @mfc_parent: source interface (iif)
121 * @mfc_flags: entry flags
122 * @expires: unresolved entry expire time
123 * @unresolved: unresolved cached skbs
124 * @last_assert: time of last assert
125 * @minvif: minimum VIF id
126 * @maxvif: maximum VIF id
127 * @bytes: bytes that have passed for this entry
128 * @pkt: packets that have passed for this entry
129 * @wrong_if: number of wrong source interface hits
130 * @lastuse: time of last use of the group (traffic or update)
131 * @ttls: OIF TTL threshold array
132 * @refcount: reference count for this entry
133 * @list: global entry list
134 * @rcu: used for entry destruction
137 struct rhlist_head mnode;
143 struct mfc_cache_cmp_arg cmparg;
150 unsigned long expires;
151 struct sk_buff_head unresolved;
154 unsigned long last_assert;
159 unsigned long wrong_if;
160 unsigned long lastuse;
161 unsigned char ttls[MAXVIFS];
165 struct list_head list;
169 struct mfc_entry_notifier_info {
170 struct fib_notifier_info info;
171 struct mfc_cache *mfc;
176 int ipmr_get_route(struct net *net, struct sk_buff *skb,
177 __be32 saddr, __be32 daddr,
178 struct rtmsg *rtm, u32 portid);
180 #ifdef CONFIG_IP_MROUTE
181 void ipmr_cache_free(struct mfc_cache *mfc_cache);
183 static inline void ipmr_cache_free(struct mfc_cache *mfc_cache)
188 static inline void ipmr_cache_put(struct mfc_cache *c)
190 if (refcount_dec_and_test(&c->mfc_un.res.refcount))
193 static inline void ipmr_cache_hold(struct mfc_cache *c)
195 refcount_inc(&c->mfc_un.res.refcount);