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7db7d9f3 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
68e039f9 | 2 | /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
c6c8fea2 SE |
5 | */ |
6 | ||
7 | #ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
8 | #define _NET_BATMAN_ADV_HARD_INTERFACE_H_ | |
9 | ||
1e2c2a4f SE |
10 | #include "main.h" |
11 | ||
1e2c2a4f | 12 | #include <linux/compiler.h> |
7a659d56 | 13 | #include <linux/kref.h> |
68a600de | 14 | #include <linux/netdevice.h> |
1e2c2a4f SE |
15 | #include <linux/notifier.h> |
16 | #include <linux/rcupdate.h> | |
17 | #include <linux/stddef.h> | |
18 | #include <linux/types.h> | |
68a600de | 19 | #include <net/net_namespace.h> |
1e2c2a4f | 20 | |
73844a8c SE |
21 | /** |
22 | * enum batadv_hard_if_state - State of a hard interface | |
23 | */ | |
e9a4f295 | 24 | enum batadv_hard_if_state { |
73844a8c SE |
25 | /** |
26 | * @BATADV_IF_NOT_IN_USE: interface is not used as slave interface of a | |
27 | * batman-adv soft interface | |
28 | */ | |
e9a4f295 | 29 | BATADV_IF_NOT_IN_USE, |
73844a8c SE |
30 | |
31 | /** | |
32 | * @BATADV_IF_TO_BE_REMOVED: interface will be removed from soft | |
33 | * interface | |
34 | */ | |
e9a4f295 | 35 | BATADV_IF_TO_BE_REMOVED, |
73844a8c SE |
36 | |
37 | /** @BATADV_IF_INACTIVE: interface is deactivated */ | |
e9a4f295 | 38 | BATADV_IF_INACTIVE, |
73844a8c SE |
39 | |
40 | /** @BATADV_IF_ACTIVE: interface is used */ | |
e9a4f295 | 41 | BATADV_IF_ACTIVE, |
73844a8c SE |
42 | |
43 | /** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */ | |
e9a4f295 | 44 | BATADV_IF_TO_BE_ACTIVATED, |
73844a8c SE |
45 | |
46 | /** | |
47 | * @BATADV_IF_I_WANT_YOU: interface is queued up (using sysfs) for being | |
48 | * added as slave interface of a batman-adv soft interface | |
49 | */ | |
e9a4f295 | 50 | BATADV_IF_I_WANT_YOU, |
e8958dbf | 51 | }; |
c6c8fea2 | 52 | |
3111beed LL |
53 | /** |
54 | * enum batadv_hard_if_bcast - broadcast avoidance options | |
3111beed LL |
55 | */ |
56 | enum batadv_hard_if_bcast { | |
8b84cc4f | 57 | /** @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface */ |
3111beed | 58 | BATADV_HARDIF_BCAST_OK = 0, |
8b84cc4f SE |
59 | |
60 | /** | |
61 | * @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no | |
62 | * recipient | |
63 | */ | |
3111beed | 64 | BATADV_HARDIF_BCAST_NORECIPIENT, |
8b84cc4f SE |
65 | |
66 | /** | |
67 | * @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it | |
68 | * from | |
69 | */ | |
3111beed | 70 | BATADV_HARDIF_BCAST_DUPFWD, |
8b84cc4f SE |
71 | |
72 | /** @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ | |
3111beed LL |
73 | BATADV_HARDIF_BCAST_DUPORIG, |
74 | }; | |
75 | ||
a15fd361 SE |
76 | /** |
77 | * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal | |
a15fd361 SE |
78 | */ |
79 | enum batadv_hard_if_cleanup { | |
8b84cc4f SE |
80 | /** |
81 | * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface | |
82 | */ | |
a15fd361 | 83 | BATADV_IF_CLEANUP_KEEP, |
8b84cc4f SE |
84 | |
85 | /** | |
86 | * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was | |
87 | * removed | |
88 | */ | |
a15fd361 SE |
89 | BATADV_IF_CLEANUP_AUTO, |
90 | }; | |
91 | ||
9563877e | 92 | extern struct notifier_block batadv_hard_if_notifier; |
c6c8fea2 | 93 | |
1942de1b | 94 | struct net_device *batadv_get_real_netdev(struct net_device *net_device); |
10b1bbb4 SE |
95 | bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface); |
96 | bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); | |
56303d34 | 97 | struct batadv_hard_iface* |
9563877e | 98 | batadv_hardif_get_by_netdev(const struct net_device *net_dev); |
56303d34 | 99 | int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, |
2cd45a06 | 100 | struct net *net, const char *iface_name); |
a15fd361 SE |
101 | void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, |
102 | enum batadv_hard_if_cleanup autodel); | |
9563877e SE |
103 | int batadv_hardif_min_mtu(struct net_device *soft_iface); |
104 | void batadv_update_min_mtu(struct net_device *soft_iface); | |
7a659d56 | 105 | void batadv_hardif_release(struct kref *ref); |
3111beed LL |
106 | int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, |
107 | u8 *orig_addr, u8 *orig_neigh); | |
c6c8fea2 | 108 | |
89652331 | 109 | /** |
7e9a8c2c | 110 | * batadv_hardif_put() - decrement the hard interface refcounter and possibly |
7a659d56 | 111 | * release it |
89652331 SW |
112 | * @hard_iface: the hard interface to free |
113 | */ | |
82047ad7 | 114 | static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) |
c6c8fea2 | 115 | { |
7a659d56 | 116 | kref_put(&hard_iface->refcount, batadv_hardif_release); |
c6c8fea2 SE |
117 | } |
118 | ||
e57acf8e SE |
119 | /** |
120 | * batadv_primary_if_get_selected() - Get reference to primary interface | |
121 | * @bat_priv: the bat priv with all the soft interface information | |
122 | * | |
123 | * Return: primary interface (with increased refcnt), otherwise NULL | |
124 | */ | |
56303d34 SE |
125 | static inline struct batadv_hard_iface * |
126 | batadv_primary_if_get_selected(struct batadv_priv *bat_priv) | |
32ae9b22 | 127 | { |
56303d34 | 128 | struct batadv_hard_iface *hard_iface; |
32ae9b22 ML |
129 | |
130 | rcu_read_lock(); | |
131 | hard_iface = rcu_dereference(bat_priv->primary_if); | |
132 | if (!hard_iface) | |
133 | goto out; | |
134 | ||
7a659d56 | 135 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
32ae9b22 ML |
136 | hard_iface = NULL; |
137 | ||
138 | out: | |
139 | rcu_read_unlock(); | |
140 | return hard_iface; | |
141 | } | |
142 | ||
c6c8fea2 | 143 | #endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ |