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29cbe68c JB |
1 | #include <linux/ieee80211.h> |
2 | #include <net/cfg80211.h> | |
3 | #include "core.h" | |
4 | ||
5 | /* Default values, timeouts in ms */ | |
6 | #define MESH_TTL 31 | |
7 | #define MESH_DEFAULT_ELEMENT_TTL 31 | |
8 | #define MESH_MAX_RETR 3 | |
9 | #define MESH_RET_T 100 | |
10 | #define MESH_CONF_T 100 | |
11 | #define MESH_HOLD_T 100 | |
12 | ||
13 | #define MESH_PATH_TIMEOUT 5000 | |
14 | ||
15 | /* | |
16 | * Minimum interval between two consecutive PREQs originated by the same | |
17 | * interface | |
18 | */ | |
19 | #define MESH_PREQ_MIN_INT 10 | |
20 | #define MESH_DIAM_TRAVERSAL_TIME 50 | |
21 | ||
22 | /* | |
23 | * A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds | |
24 | * before timing out. This way it will remain ACTIVE and no data frames | |
25 | * will be unnecessarily held in the pending queue. | |
26 | */ | |
27 | #define MESH_PATH_REFRESH_TIME 1000 | |
28 | #define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME) | |
29 | ||
30 | /* Default maximum number of established plinks per interface */ | |
31 | #define MESH_MAX_ESTAB_PLINKS 32 | |
32 | ||
33 | #define MESH_MAX_PREQ_RETRIES 4 | |
34 | ||
35 | ||
36 | const struct mesh_config default_mesh_config = { | |
37 | .dot11MeshRetryTimeout = MESH_RET_T, | |
38 | .dot11MeshConfirmTimeout = MESH_CONF_T, | |
39 | .dot11MeshHoldingTimeout = MESH_HOLD_T, | |
40 | .dot11MeshMaxRetries = MESH_MAX_RETR, | |
41 | .dot11MeshTTL = MESH_TTL, | |
42 | .element_ttl = MESH_DEFAULT_ELEMENT_TTL, | |
43 | .auto_open_plinks = true, | |
44 | .dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS, | |
45 | .dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT, | |
46 | .dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT, | |
47 | .dot11MeshHWMPnetDiameterTraversalTime = MESH_DIAM_TRAVERSAL_TIME, | |
48 | .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES, | |
49 | .path_refresh_time = MESH_PATH_REFRESH_TIME, | |
50 | .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT, | |
51 | }; | |
52 | ||
53 | ||
54 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
55 | struct net_device *dev, | |
56 | const u8 *mesh_id, u8 mesh_id_len, | |
57 | const struct mesh_config *conf) | |
58 | { | |
59 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
60 | struct mesh_setup setup = { | |
61 | .mesh_id = mesh_id, | |
62 | .mesh_id_len = mesh_id_len, | |
63 | }; | |
64 | int err; | |
65 | ||
66 | BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN); | |
67 | ||
68 | ASSERT_WDEV_LOCK(wdev); | |
69 | ||
70 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
71 | return -EOPNOTSUPP; | |
72 | ||
73 | if (wdev->mesh_id_len) | |
74 | return -EALREADY; | |
75 | ||
76 | if (!mesh_id_len) | |
77 | return -EINVAL; | |
78 | ||
79 | if (!rdev->ops->join_mesh) | |
80 | return -EOPNOTSUPP; | |
81 | ||
82 | err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, &setup); | |
83 | if (!err) { | |
84 | memcpy(wdev->ssid, mesh_id, mesh_id_len); | |
85 | wdev->mesh_id_len = mesh_id_len; | |
86 | } | |
87 | ||
88 | return err; | |
89 | } | |
90 | ||
91 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
92 | struct net_device *dev, | |
93 | const u8 *mesh_id, u8 mesh_id_len, | |
94 | const struct mesh_config *conf) | |
95 | { | |
96 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
97 | int err; | |
98 | ||
99 | wdev_lock(wdev); | |
100 | err = __cfg80211_join_mesh(rdev, dev, mesh_id, mesh_id_len, conf); | |
101 | wdev_unlock(wdev); | |
102 | ||
103 | return err; | |
104 | } | |
105 | ||
106 | static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
107 | struct net_device *dev) | |
108 | { | |
109 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
110 | int err; | |
111 | ||
112 | ASSERT_WDEV_LOCK(wdev); | |
113 | ||
114 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
115 | return -EOPNOTSUPP; | |
116 | ||
117 | if (!rdev->ops->leave_mesh) | |
118 | return -EOPNOTSUPP; | |
119 | ||
120 | if (!wdev->mesh_id_len) | |
121 | return -ENOTCONN; | |
122 | ||
123 | err = rdev->ops->leave_mesh(&rdev->wiphy, dev); | |
124 | if (!err) | |
125 | wdev->mesh_id_len = 0; | |
126 | return err; | |
127 | } | |
128 | ||
129 | int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
130 | struct net_device *dev) | |
131 | { | |
132 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
133 | int err; | |
134 | ||
135 | wdev_lock(wdev); | |
136 | err = __cfg80211_leave_mesh(rdev, dev); | |
137 | wdev_unlock(wdev); | |
138 | ||
139 | return err; | |
140 | } |