Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 53 | const struct mesh_setup default_mesh_setup = { |
| 54 | .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP, |
| 55 | .path_metric = IEEE80211_PATH_METRIC_AIRTIME, |
Javier Cardona | 581a8b0 | 2011-04-07 15:08:27 -0700 | [diff] [blame] | 56 | .ie = NULL, |
| 57 | .ie_len = 0, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 58 | }; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 59 | |
| 60 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, |
| 61 | struct net_device *dev, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 62 | const struct mesh_setup *setup, |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 63 | const struct mesh_config *conf) |
| 64 | { |
| 65 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 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 | |
Javier Cardona | 15d5dda | 2011-04-07 15:08:28 -0700 | [diff] [blame^] | 75 | if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && |
| 76 | setup->is_secure) |
| 77 | return -EOPNOTSUPP; |
| 78 | |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 79 | if (wdev->mesh_id_len) |
| 80 | return -EALREADY; |
| 81 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 82 | if (!setup->mesh_id_len) |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 83 | return -EINVAL; |
| 84 | |
| 85 | if (!rdev->ops->join_mesh) |
| 86 | return -EOPNOTSUPP; |
| 87 | |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 88 | err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 89 | if (!err) { |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 90 | memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len); |
| 91 | wdev->mesh_id_len = setup->mesh_id_len; |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | return err; |
| 95 | } |
| 96 | |
| 97 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, |
| 98 | struct net_device *dev, |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 99 | const struct mesh_setup *setup, |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 100 | const struct mesh_config *conf) |
| 101 | { |
| 102 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 103 | int err; |
| 104 | |
| 105 | wdev_lock(wdev); |
Javier Cardona | c80d545 | 2010-12-16 17:37:49 -0800 | [diff] [blame] | 106 | err = __cfg80211_join_mesh(rdev, dev, setup, conf); |
Johannes Berg | 29cbe68 | 2010-12-03 09:20:44 +0100 | [diff] [blame] | 107 | wdev_unlock(wdev); |
| 108 | |
| 109 | return err; |
| 110 | } |
| 111 | |
| 112 | static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, |
| 113 | struct net_device *dev) |
| 114 | { |
| 115 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 116 | int err; |
| 117 | |
| 118 | ASSERT_WDEV_LOCK(wdev); |
| 119 | |
| 120 | if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) |
| 121 | return -EOPNOTSUPP; |
| 122 | |
| 123 | if (!rdev->ops->leave_mesh) |
| 124 | return -EOPNOTSUPP; |
| 125 | |
| 126 | if (!wdev->mesh_id_len) |
| 127 | return -ENOTCONN; |
| 128 | |
| 129 | err = rdev->ops->leave_mesh(&rdev->wiphy, dev); |
| 130 | if (!err) |
| 131 | wdev->mesh_id_len = 0; |
| 132 | return err; |
| 133 | } |
| 134 | |
| 135 | int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, |
| 136 | struct net_device *dev) |
| 137 | { |
| 138 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
| 139 | int err; |
| 140 | |
| 141 | wdev_lock(wdev); |
| 142 | err = __cfg80211_leave_mesh(rdev, dev); |
| 143 | wdev_unlock(wdev); |
| 144 | |
| 145 | return err; |
| 146 | } |