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6853f21f YM |
1 | #ifndef __LINUX_MROUTE_BASE_H |
2 | #define __LINUX_MROUTE_BASE_H | |
3 | ||
4 | #include <linux/netdevice.h> | |
b70432f7 YM |
5 | #include <linux/rhashtable.h> |
6 | #include <net/net_namespace.h> | |
7 | #include <net/sock.h> | |
6853f21f YM |
8 | |
9 | /** | |
10 | * struct vif_device - interface representor for multicast routing | |
11 | * @dev: network device being used | |
12 | * @bytes_in: statistic; bytes ingressing | |
13 | * @bytes_out: statistic; bytes egresing | |
14 | * @pkt_in: statistic; packets ingressing | |
15 | * @pkt_out: statistic; packets egressing | |
16 | * @rate_limit: Traffic shaping (NI) | |
17 | * @threshold: TTL threshold | |
18 | * @flags: Control flags | |
19 | * @link: Physical interface index | |
20 | * @dev_parent_id: device parent id | |
21 | * @local: Local address | |
22 | * @remote: Remote address for tunnels | |
23 | */ | |
24 | struct vif_device { | |
25 | struct net_device *dev; | |
26 | unsigned long bytes_in, bytes_out; | |
27 | unsigned long pkt_in, pkt_out; | |
28 | unsigned long rate_limit; | |
29 | unsigned char threshold; | |
30 | unsigned short flags; | |
31 | int link; | |
32 | ||
33 | /* Currently only used by ipmr */ | |
34 | struct netdev_phys_item_id dev_parent_id; | |
35 | __be32 local, remote; | |
36 | }; | |
37 | ||
b70432f7 YM |
38 | #ifndef MAXVIFS |
39 | /* This one is nasty; value is defined in uapi using different symbols for | |
40 | * mroute and morute6 but both map into same 32. | |
41 | */ | |
42 | #define MAXVIFS 32 | |
43 | #endif | |
44 | ||
45 | #define VIF_EXISTS(_mrt, _idx) (!!((_mrt)->vif_table[_idx].dev)) | |
46 | ||
494fff56 YM |
47 | /** |
48 | * struct mr_mfc - common multicast routing entries | |
49 | * @mnode: rhashtable list | |
50 | * @mfc_parent: source interface (iif) | |
51 | * @mfc_flags: entry flags | |
52 | * @expires: unresolved entry expire time | |
53 | * @unresolved: unresolved cached skbs | |
54 | * @last_assert: time of last assert | |
55 | * @minvif: minimum VIF id | |
56 | * @maxvif: maximum VIF id | |
57 | * @bytes: bytes that have passed for this entry | |
58 | * @pkt: packets that have passed for this entry | |
59 | * @wrong_if: number of wrong source interface hits | |
60 | * @lastuse: time of last use of the group (traffic or update) | |
61 | * @ttls: OIF TTL threshold array | |
62 | * @refcount: reference count for this entry | |
63 | * @list: global entry list | |
64 | * @rcu: used for entry destruction | |
65 | */ | |
66 | struct mr_mfc { | |
67 | struct rhlist_head mnode; | |
68 | unsigned short mfc_parent; | |
69 | int mfc_flags; | |
70 | ||
71 | union { | |
72 | struct { | |
73 | unsigned long expires; | |
74 | struct sk_buff_head unresolved; | |
75 | } unres; | |
76 | struct { | |
77 | unsigned long last_assert; | |
78 | int minvif; | |
79 | int maxvif; | |
80 | unsigned long bytes; | |
81 | unsigned long pkt; | |
82 | unsigned long wrong_if; | |
83 | unsigned long lastuse; | |
84 | unsigned char ttls[MAXVIFS]; | |
85 | refcount_t refcount; | |
86 | } res; | |
87 | } mfc_un; | |
88 | struct list_head list; | |
89 | struct rcu_head rcu; | |
90 | }; | |
91 | ||
845c9a7a YM |
92 | struct mr_table; |
93 | ||
94 | /** | |
95 | * struct mr_table_ops - callbacks and info for protocol-specific ops | |
96 | * @rht_params: parameters for accessing the MFC hash | |
97 | * @cmparg_any: a hash key to be used for matching on (*,*) routes | |
98 | */ | |
99 | struct mr_table_ops { | |
100 | const struct rhashtable_params *rht_params; | |
101 | void *cmparg_any; | |
102 | }; | |
103 | ||
b70432f7 YM |
104 | /** |
105 | * struct mr_table - a multicast routing table | |
106 | * @list: entry within a list of multicast routing tables | |
107 | * @net: net where this table belongs | |
845c9a7a | 108 | * @ops: protocol specific operations |
b70432f7 YM |
109 | * @id: identifier of the table |
110 | * @mroute_sk: socket associated with the table | |
111 | * @ipmr_expire_timer: timer for handling unresolved routes | |
112 | * @mfc_unres_queue: list of unresolved MFC entries | |
113 | * @vif_table: array containing all possible vifs | |
114 | * @mfc_hash: Hash table of all resolved routes for easy lookup | |
115 | * @mfc_cache_list: list of resovled routes for possible traversal | |
116 | * @maxvif: Identifier of highest value vif currently in use | |
117 | * @cache_resolve_queue_len: current size of unresolved queue | |
118 | * @mroute_do_assert: Whether to inform userspace on wrong ingress | |
119 | * @mroute_do_pim: Whether to receive IGMP PIMv1 | |
120 | * @mroute_reg_vif_num: PIM-device vif index | |
121 | */ | |
122 | struct mr_table { | |
123 | struct list_head list; | |
124 | possible_net_t net; | |
845c9a7a | 125 | struct mr_table_ops ops; |
b70432f7 YM |
126 | u32 id; |
127 | struct sock __rcu *mroute_sk; | |
128 | struct timer_list ipmr_expire_timer; | |
129 | struct list_head mfc_unres_queue; | |
130 | struct vif_device vif_table[MAXVIFS]; | |
131 | struct rhltable mfc_hash; | |
132 | struct list_head mfc_cache_list; | |
133 | int maxvif; | |
134 | atomic_t cache_resolve_queue_len; | |
135 | bool mroute_do_assert; | |
136 | bool mroute_do_pim; | |
137 | int mroute_reg_vif_num; | |
138 | }; | |
139 | ||
6853f21f YM |
140 | #ifdef CONFIG_IP_MROUTE_COMMON |
141 | void vif_device_init(struct vif_device *v, | |
142 | struct net_device *dev, | |
143 | unsigned long rate_limit, | |
144 | unsigned char threshold, | |
145 | unsigned short flags, | |
146 | unsigned short get_iflink_mask); | |
0bbbf0e7 YM |
147 | |
148 | struct mr_table * | |
149 | mr_table_alloc(struct net *net, u32 id, | |
845c9a7a | 150 | struct mr_table_ops *ops, |
0bbbf0e7 YM |
151 | void (*expire_func)(struct timer_list *t), |
152 | void (*table_set)(struct mr_table *mrt, | |
153 | struct net *net)); | |
845c9a7a YM |
154 | |
155 | /* These actually return 'struct mr_mfc *', but to avoid need for explicit | |
156 | * castings they simply return void. | |
157 | */ | |
158 | void *mr_mfc_find_parent(struct mr_table *mrt, | |
159 | void *hasharg, int parent); | |
160 | void *mr_mfc_find_any_parent(struct mr_table *mrt, int vifi); | |
161 | void *mr_mfc_find_any(struct mr_table *mrt, int vifi, void *hasharg); | |
162 | ||
6853f21f YM |
163 | #else |
164 | static inline void vif_device_init(struct vif_device *v, | |
165 | struct net_device *dev, | |
166 | unsigned long rate_limit, | |
167 | unsigned char threshold, | |
168 | unsigned short flags, | |
169 | unsigned short get_iflink_mask) | |
170 | { | |
171 | } | |
0bbbf0e7 | 172 | |
845c9a7a | 173 | static inline void * |
0bbbf0e7 | 174 | mr_table_alloc(struct net *net, u32 id, |
845c9a7a | 175 | struct mr_table_ops *ops, |
0bbbf0e7 YM |
176 | void (*expire_func)(struct timer_list *t), |
177 | void (*table_set)(struct mr_table *mrt, | |
178 | struct net *net)) | |
179 | { | |
180 | return NULL; | |
181 | } | |
845c9a7a YM |
182 | |
183 | static inline void *mr_mfc_find_parent(struct mr_table *mrt, | |
184 | void *hasharg, int parent) | |
185 | { | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | static inline void *mr_mfc_find_any_parent(struct mr_table *mrt, | |
190 | int vifi) | |
191 | { | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | static inline struct mr_mfc *mr_mfc_find_any(struct mr_table *mrt, | |
196 | int vifi, void *hasharg) | |
197 | { | |
198 | return NULL; | |
199 | } | |
6853f21f | 200 | #endif |
845c9a7a YM |
201 | |
202 | static inline void *mr_mfc_find(struct mr_table *mrt, void *hasharg) | |
203 | { | |
204 | return mr_mfc_find_parent(mrt, hasharg, -1); | |
205 | } | |
6853f21f | 206 | #endif |