Commit | Line | Data |
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29cbe68c JB |
1 | #include <linux/ieee80211.h> |
2 | #include <net/cfg80211.h> | |
c93b5e71 | 3 | #include "nl80211.h" |
29cbe68c JB |
4 | #include "core.h" |
5 | ||
6 | /* Default values, timeouts in ms */ | |
7 | #define MESH_TTL 31 | |
8 | #define MESH_DEFAULT_ELEMENT_TTL 31 | |
9 | #define MESH_MAX_RETR 3 | |
10 | #define MESH_RET_T 100 | |
11 | #define MESH_CONF_T 100 | |
12 | #define MESH_HOLD_T 100 | |
13 | ||
14 | #define MESH_PATH_TIMEOUT 5000 | |
0507e159 | 15 | #define MESH_RANN_INTERVAL 5000 |
29cbe68c JB |
16 | |
17 | /* | |
18 | * Minimum interval between two consecutive PREQs originated by the same | |
19 | * interface | |
20 | */ | |
21 | #define MESH_PREQ_MIN_INT 10 | |
22 | #define MESH_DIAM_TRAVERSAL_TIME 50 | |
23 | ||
24 | /* | |
25 | * A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds | |
26 | * before timing out. This way it will remain ACTIVE and no data frames | |
27 | * will be unnecessarily held in the pending queue. | |
28 | */ | |
29 | #define MESH_PATH_REFRESH_TIME 1000 | |
30 | #define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME) | |
31 | ||
32 | /* Default maximum number of established plinks per interface */ | |
33 | #define MESH_MAX_ESTAB_PLINKS 32 | |
34 | ||
35 | #define MESH_MAX_PREQ_RETRIES 4 | |
36 | ||
37 | ||
38 | const struct mesh_config default_mesh_config = { | |
39 | .dot11MeshRetryTimeout = MESH_RET_T, | |
40 | .dot11MeshConfirmTimeout = MESH_CONF_T, | |
41 | .dot11MeshHoldingTimeout = MESH_HOLD_T, | |
42 | .dot11MeshMaxRetries = MESH_MAX_RETR, | |
43 | .dot11MeshTTL = MESH_TTL, | |
44 | .element_ttl = MESH_DEFAULT_ELEMENT_TTL, | |
45 | .auto_open_plinks = true, | |
46 | .dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS, | |
47 | .dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT, | |
48 | .dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT, | |
49 | .dot11MeshHWMPnetDiameterTraversalTime = MESH_DIAM_TRAVERSAL_TIME, | |
50 | .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES, | |
51 | .path_refresh_time = MESH_PATH_REFRESH_TIME, | |
52 | .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT, | |
0507e159 | 53 | .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL, |
16dd7267 | 54 | .dot11MeshGateAnnouncementProtocol = false, |
29cbe68c JB |
55 | }; |
56 | ||
c80d545d JC |
57 | const struct mesh_setup default_mesh_setup = { |
58 | .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP, | |
59 | .path_metric = IEEE80211_PATH_METRIC_AIRTIME, | |
581a8b0f JC |
60 | .ie = NULL, |
61 | .ie_len = 0, | |
5cff5e01 | 62 | .is_secure = false, |
c80d545d | 63 | }; |
29cbe68c JB |
64 | |
65 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
66 | struct net_device *dev, | |
c80d545d | 67 | const struct mesh_setup *setup, |
29cbe68c JB |
68 | const struct mesh_config *conf) |
69 | { | |
70 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
29cbe68c JB |
71 | int err; |
72 | ||
73 | BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN); | |
74 | ||
75 | ASSERT_WDEV_LOCK(wdev); | |
76 | ||
77 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
78 | return -EOPNOTSUPP; | |
79 | ||
15d5dda6 JC |
80 | if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && |
81 | setup->is_secure) | |
82 | return -EOPNOTSUPP; | |
83 | ||
29cbe68c JB |
84 | if (wdev->mesh_id_len) |
85 | return -EALREADY; | |
86 | ||
c80d545d | 87 | if (!setup->mesh_id_len) |
29cbe68c JB |
88 | return -EINVAL; |
89 | ||
90 | if (!rdev->ops->join_mesh) | |
91 | return -EOPNOTSUPP; | |
92 | ||
c80d545d | 93 | err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup); |
29cbe68c | 94 | if (!err) { |
c80d545d JC |
95 | memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len); |
96 | wdev->mesh_id_len = setup->mesh_id_len; | |
29cbe68c JB |
97 | } |
98 | ||
99 | return err; | |
100 | } | |
101 | ||
102 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
103 | struct net_device *dev, | |
c80d545d | 104 | const struct mesh_setup *setup, |
29cbe68c JB |
105 | const struct mesh_config *conf) |
106 | { | |
107 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
108 | int err; | |
109 | ||
110 | wdev_lock(wdev); | |
c80d545d | 111 | err = __cfg80211_join_mesh(rdev, dev, setup, conf); |
29cbe68c JB |
112 | wdev_unlock(wdev); |
113 | ||
114 | return err; | |
115 | } | |
116 | ||
c93b5e71 JC |
117 | void cfg80211_notify_new_peer_candidate(struct net_device *dev, |
118 | const u8 *macaddr, const u8* ie, u8 ie_len, gfp_t gfp) | |
119 | { | |
120 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
121 | ||
122 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) | |
123 | return; | |
124 | ||
125 | nl80211_send_new_peer_candidate(wiphy_to_dev(wdev->wiphy), dev, | |
126 | macaddr, ie, ie_len, gfp); | |
127 | } | |
128 | EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); | |
129 | ||
29cbe68c JB |
130 | static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, |
131 | struct net_device *dev) | |
132 | { | |
133 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
134 | int err; | |
135 | ||
136 | ASSERT_WDEV_LOCK(wdev); | |
137 | ||
138 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) | |
139 | return -EOPNOTSUPP; | |
140 | ||
141 | if (!rdev->ops->leave_mesh) | |
142 | return -EOPNOTSUPP; | |
143 | ||
144 | if (!wdev->mesh_id_len) | |
145 | return -ENOTCONN; | |
146 | ||
147 | err = rdev->ops->leave_mesh(&rdev->wiphy, dev); | |
148 | if (!err) | |
149 | wdev->mesh_id_len = 0; | |
150 | return err; | |
151 | } | |
152 | ||
153 | int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
154 | struct net_device *dev) | |
155 | { | |
156 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
157 | int err; | |
158 | ||
159 | wdev_lock(wdev); | |
160 | err = __cfg80211_leave_mesh(rdev, dev); | |
161 | wdev_unlock(wdev); | |
162 | ||
163 | return err; | |
164 | } |