Commit | Line | Data |
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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 | ||
c80d545d JC |
53 | const struct mesh_setup default_mesh_setup = { |
54 | .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP, | |
55 | .path_metric = IEEE80211_PATH_METRIC_AIRTIME, | |
581a8b0f JC |
56 | .ie = NULL, |
57 | .ie_len = 0, | |
c80d545d | 58 | }; |
29cbe68c JB |
59 | |
60 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
61 | struct net_device *dev, | |
c80d545d | 62 | const struct mesh_setup *setup, |
29cbe68c JB |
63 | const struct mesh_config *conf) |
64 | { | |
65 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
29cbe68c JB |
66 | int err; |
67 | ||
68 | BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN); | |
69 | ||
70 | ASSERT_WDEV_LOCK(wdev); | |
71 | ||
72 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
73 | return -EOPNOTSUPP; | |
74 | ||
75 | if (wdev->mesh_id_len) | |
76 | return -EALREADY; | |
77 | ||
c80d545d | 78 | if (!setup->mesh_id_len) |
29cbe68c JB |
79 | return -EINVAL; |
80 | ||
81 | if (!rdev->ops->join_mesh) | |
82 | return -EOPNOTSUPP; | |
83 | ||
c80d545d | 84 | err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup); |
29cbe68c | 85 | if (!err) { |
c80d545d JC |
86 | memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len); |
87 | wdev->mesh_id_len = setup->mesh_id_len; | |
29cbe68c JB |
88 | } |
89 | ||
90 | return err; | |
91 | } | |
92 | ||
93 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
94 | struct net_device *dev, | |
c80d545d | 95 | const struct mesh_setup *setup, |
29cbe68c JB |
96 | const struct mesh_config *conf) |
97 | { | |
98 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
99 | int err; | |
100 | ||
101 | wdev_lock(wdev); | |
c80d545d | 102 | err = __cfg80211_join_mesh(rdev, dev, setup, conf); |
29cbe68c JB |
103 | wdev_unlock(wdev); |
104 | ||
105 | return err; | |
106 | } | |
107 | ||
108 | static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
109 | struct net_device *dev) | |
110 | { | |
111 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
112 | int err; | |
113 | ||
114 | ASSERT_WDEV_LOCK(wdev); | |
115 | ||
116 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
117 | return -EOPNOTSUPP; | |
118 | ||
119 | if (!rdev->ops->leave_mesh) | |
120 | return -EOPNOTSUPP; | |
121 | ||
122 | if (!wdev->mesh_id_len) | |
123 | return -ENOTCONN; | |
124 | ||
125 | err = rdev->ops->leave_mesh(&rdev->wiphy, dev); | |
126 | if (!err) | |
127 | wdev->mesh_id_len = 0; | |
128 | return err; | |
129 | } | |
130 | ||
131 | int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
132 | struct net_device *dev) | |
133 | { | |
134 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
135 | int err; | |
136 | ||
137 | wdev_lock(wdev); | |
138 | err = __cfg80211_leave_mesh(rdev, dev); | |
139 | wdev_unlock(wdev); | |
140 | ||
141 | return err; | |
142 | } |