Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 1 | #include <linux/ieee80211.h> |
| 2 | #include <net/cfg80211.h> |
Javier Cardona | c93b5e7 | 2011-04-07 15:08:34 -0700 | [diff] [blame] | 3 | #include "nl80211.h" |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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 |
Javier Cardona | 0507e15 | 2011-08-09 16:45:10 -0700 | [diff] [blame] | 15 | #define MESH_RANN_INTERVAL 5000 |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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, |
Javier Cardona | 0507e15 | 2011-08-09 16:45:10 -0700 | [diff] [blame] | 53 | .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL, |
Javier Cardona | 16dd726 | 2011-08-09 16:45:11 -0700 | [diff] [blame^] | 54 | .dot11MeshGateAnnouncementProtocol = false, |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 55 | }; |
| 56 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 57 | const struct mesh_setup default_mesh_setup = { |
| 58 | .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP, |
| 59 | .path_metric = IEEE80211_PATH_METRIC_AIRTIME, |
Javier Cardona | 581a8b0 | 2011-04-07 15:08:27 -0700 | [diff] [blame] | 60 | .ie = NULL, |
| 61 | .ie_len = 0, |
Javier Cardona | 5cff5e0 | 2011-04-07 15:08:29 -0700 | [diff] [blame] | 62 | .is_secure = false, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 63 | }; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 64 | |
| 65 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, |
| 66 | struct net_device *dev, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 67 | const struct mesh_setup *setup, |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 68 | const struct mesh_config *conf) |
| 69 | { |
| 70 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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 | |
Javier Cardona | 15d5dda | 2011-04-07 15:08:28 -0700 | [diff] [blame] | 80 | if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && |
| 81 | setup->is_secure) |
| 82 | return -EOPNOTSUPP; |
| 83 | |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 84 | if (wdev->mesh_id_len) |
| 85 | return -EALREADY; |
| 86 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 87 | if (!setup->mesh_id_len) |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 88 | return -EINVAL; |
| 89 | |
| 90 | if (!rdev->ops->join_mesh) |
| 91 | return -EOPNOTSUPP; |
| 92 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 93 | err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 94 | if (!err) { |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 95 | memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len); |
| 96 | wdev->mesh_id_len = setup->mesh_id_len; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | return err; |
| 100 | } |
| 101 | |
| 102 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, |
| 103 | struct net_device *dev, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 104 | const struct mesh_setup *setup, |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 105 | const struct mesh_config *conf) |
| 106 | { |
| 107 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 108 | int err; |
| 109 | |
| 110 | wdev_lock(wdev); |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 111 | err = __cfg80211_join_mesh(rdev, dev, setup, conf); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 112 | wdev_unlock(wdev); |
| 113 | |
| 114 | return err; |
| 115 | } |
| 116 | |
Javier Cardona | c93b5e7 | 2011-04-07 15:08:34 -0700 | [diff] [blame] | 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 | |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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 | } |