include/linux/mroute.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __LINUX_MROUTE_H
0003 #define __LINUX_MROUTE_H
0004
0005 #include <linux/in.h>
0006 #include <linux/pim.h>
0007 #include <net/fib_rules.h>
0008 #include <net/fib_notifier.h>
0009 #include <uapi/linux/mroute.h>
0010 #include <linux/mroute_base.h>
0011 #include <linux/sockptr.h>
0012
0013 #ifdef CONFIG_IP_MROUTE
0014 static inline int ip_mroute_opt(int opt)
0015 {
0016     return opt >= MRT_BASE && opt <= MRT_MAX;
0017 }
0018
0019 int ip_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
0020 int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
0021 int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
0022 int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
0023 int ip_mr_init(void);
0024 bool ipmr_rule_default(const struct fib_rule *rule);
0025 #else
0026 static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
0027                        sockptr_t optval, unsigned int optlen)
0028 {
0029     return -ENOPROTOOPT;
0030 }
0031
0032 static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
0033                        char __user *optval, int __user *optlen)
0034 {
0035     return -ENOPROTOOPT;
0036 }
0037
0038 static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
0039 {
0040     return -ENOIOCTLCMD;
0041 }
0042
0043 static inline int ip_mr_init(void)
0044 {
0045     return 0;
0046 }
0047
0048 static inline int ip_mroute_opt(int opt)
0049 {
0050     return 0;
0051 }
0052
0053 static inline bool ipmr_rule_default(const struct fib_rule *rule)
0054 {
0055     return true;
0056 }
0057 #endif
0058
0059 #define VIFF_STATIC 0x8000
0060
0061 struct mfc_cache_cmp_arg {
0062     __be32 mfc_mcastgrp;
0063     __be32 mfc_origin;
0064 };
0065
0066 /**
0067  * struct mfc_cache - multicast routing entries
0068  * @_c: Common multicast routing information; has to be first [for casting]
0069  * @mfc_mcastgrp: destination multicast group address
0070  * @mfc_origin: source address
0071  * @cmparg: used for rhashtable comparisons
0072  */
0073 struct mfc_cache {
0074     struct mr_mfc _c;
0075     union {
0076         struct {
0077             __be32 mfc_mcastgrp;
0078             __be32 mfc_origin;
0079         };
0080         struct mfc_cache_cmp_arg cmparg;
0081     };
0082 };
0083
0084 struct rtmsg;
0085 int ipmr_get_route(struct net *net, struct sk_buff *skb,
0086            __be32 saddr, __be32 daddr,
0087            struct rtmsg *rtm, u32 portid);
0088 #endif