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1 | #ifndef __LINUX_MROUTE_H | |
2 | #define __LINUX_MROUTE_H | |
3 | ||
4 | #include <linux/in.h> | |
5 | #include <linux/pim.h> | |
6 | #include <net/sock.h> | |
7 | #include <uapi/linux/mroute.h> | |
8 | ||
9 | #ifdef CONFIG_IP_MROUTE | |
10 | static inline int ip_mroute_opt(int opt) | |
11 | { | |
12 | return opt >= MRT_BASE && opt <= MRT_MAX; | |
13 | } | |
14 | ||
15 | int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); | |
16 | int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); | |
17 | int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); | |
18 | int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); | |
19 | int ip_mr_init(void); | |
20 | #else | |
21 | static inline int ip_mroute_setsockopt(struct sock *sock, int optname, | |
22 | char __user *optval, unsigned int optlen) | |
23 | { | |
24 | return -ENOPROTOOPT; | |
25 | } | |
26 | ||
27 | static inline int ip_mroute_getsockopt(struct sock *sock, int optname, | |
28 | char __user *optval, int __user *optlen) | |
29 | { | |
30 | return -ENOPROTOOPT; | |
31 | } | |
32 | ||
33 | static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) | |
34 | { | |
35 | return -ENOIOCTLCMD; | |
36 | } | |
37 | ||
38 | static inline int ip_mr_init(void) | |
39 | { | |
40 | return 0; | |
41 | } | |
42 | ||
43 | static inline int ip_mroute_opt(int opt) | |
44 | { | |
45 | return 0; | |
46 | } | |
47 | #endif | |
48 | ||
49 | struct vif_device { | |
50 | struct net_device *dev; /* Device we are using */ | |
51 | unsigned long bytes_in,bytes_out; | |
52 | unsigned long pkt_in,pkt_out; /* Statistics */ | |
53 | unsigned long rate_limit; /* Traffic shaping (NI) */ | |
54 | unsigned char threshold; /* TTL threshold */ | |
55 | unsigned short flags; /* Control flags */ | |
56 | __be32 local,remote; /* Addresses(remote for tunnels)*/ | |
57 | int link; /* Physical interface index */ | |
58 | }; | |
59 | ||
60 | #define VIFF_STATIC 0x8000 | |
61 | ||
62 | #define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL) | |
63 | #define MFC_LINES 64 | |
64 | ||
65 | struct mr_table { | |
66 | struct list_head list; | |
67 | possible_net_t net; | |
68 | u32 id; | |
69 | struct sock __rcu *mroute_sk; | |
70 | struct timer_list ipmr_expire_timer; | |
71 | struct list_head mfc_unres_queue; | |
72 | struct list_head mfc_cache_array[MFC_LINES]; | |
73 | struct vif_device vif_table[MAXVIFS]; | |
74 | int maxvif; | |
75 | atomic_t cache_resolve_queue_len; | |
76 | bool mroute_do_assert; | |
77 | bool mroute_do_pim; | |
78 | int mroute_reg_vif_num; | |
79 | }; | |
80 | ||
81 | /* mfc_flags: | |
82 | * MFC_STATIC - the entry was added statically (not by a routing daemon) | |
83 | */ | |
84 | enum { | |
85 | MFC_STATIC = BIT(0), | |
86 | }; | |
87 | ||
88 | struct mfc_cache { | |
89 | struct list_head list; | |
90 | __be32 mfc_mcastgrp; /* Group the entry belongs to */ | |
91 | __be32 mfc_origin; /* Source of packet */ | |
92 | vifi_t mfc_parent; /* Source interface */ | |
93 | int mfc_flags; /* Flags on line */ | |
94 | ||
95 | union { | |
96 | struct { | |
97 | unsigned long expires; | |
98 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
99 | } unres; | |
100 | struct { | |
101 | unsigned long last_assert; | |
102 | int minvif; | |
103 | int maxvif; | |
104 | unsigned long bytes; | |
105 | unsigned long pkt; | |
106 | unsigned long wrong_if; | |
107 | unsigned long lastuse; | |
108 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ | |
109 | } res; | |
110 | } mfc_un; | |
111 | struct rcu_head rcu; | |
112 | }; | |
113 | ||
114 | #ifdef __BIG_ENDIAN | |
115 | #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) | |
116 | #else | |
117 | #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) | |
118 | #endif | |
119 | ||
120 | struct rtmsg; | |
121 | int ipmr_get_route(struct net *net, struct sk_buff *skb, | |
122 | __be32 saddr, __be32 daddr, | |
123 | struct rtmsg *rtm, int nowait, u32 portid); | |
124 | #endif |