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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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/* Default values, timeouts in ms */#define MESH_TTL 31#define MESH_DEFAULT_ELEMENT_TTL 31#define MESH_MAX_RETR 3#define MESH_RET_T 100#define MESH_CONF_T 100#define MESH_HOLD_T 100
#define MESH_PATH_TIMEOUT 5000#define MESH_RANN_INTERVAL 5000#define MESH_PATH_TO_ROOT_TIMEOUT 6000#define MESH_ROOT_INTERVAL 5000#define MESH_ROOT_CONFIRMATION_INTERVAL 2000#define MESH_DEFAULT_PLINK_TIMEOUT 1800 /* timeout in seconds */
/* * Minimum interval between two consecutive PREQs originated by the same * interface */#define MESH_PREQ_MIN_INT 10#define MESH_PERR_MIN_INT 100#define MESH_DIAM_TRAVERSAL_TIME 50
#define MESH_RSSI_THRESHOLD 0
/* * A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds * before timing out. This way it will remain ACTIVE and no data frames * will be unnecessarily held in the pending queue. */#define MESH_PATH_REFRESH_TIME 1000#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
/* Default maximum number of established plinks per interface */#define MESH_MAX_ESTAB_PLINKS 32
#define MESH_MAX_PREQ_RETRIES 4
#define MESH_SYNC_NEIGHBOR_OFFSET_MAX 50
#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units (=TUs) */#define MESH_DEFAULT_DTIM_PERIOD 2#define MESH_DEFAULT_AWAKE_WINDOW 10 /* in 1024 us units (=TUs) */
const struct mesh_config default_mesh_config = { .dot11MeshRetryTimeout = MESH_RET_T, .dot11MeshConfirmTimeout = MESH_CONF_T, .dot11MeshHoldingTimeout = MESH_HOLD_T, .dot11MeshMaxRetries = MESH_MAX_RETR, .dot11MeshTTL = MESH_TTL, .element_ttl = MESH_DEFAULT_ELEMENT_TTL, .auto_open_plinks = true, .dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS, .dot11MeshNbrOffsetMaxNeighbor = MESH_SYNC_NEIGHBOR_OFFSET_MAX, .dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT, .dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT, .dot11MeshHWMPperrMinInterval = MESH_PERR_MIN_INT, .dot11MeshHWMPnetDiameterTraversalTime = MESH_DIAM_TRAVERSAL_TIME, .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES, .path_refresh_time = MESH_PATH_REFRESH_TIME, .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT, .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL, .dot11MeshGateAnnouncementProtocol = false, .dot11MeshForwarding = true, .rssi_threshold = MESH_RSSI_THRESHOLD, .ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED, .dot11MeshHWMPactivePathToRootTimeout = MESH_PATH_TO_ROOT_TIMEOUT, .dot11MeshHWMProotInterval = MESH_ROOT_INTERVAL, .dot11MeshHWMPconfirmationInterval = MESH_ROOT_CONFIRMATION_INTERVAL, .power_mode = NL80211_MESH_POWER_ACTIVE, .dot11MeshAwakeWindowDuration = MESH_DEFAULT_AWAKE_WINDOW, .plink_timeout = MESH_DEFAULT_PLINK_TIMEOUT, .dot11MeshNolearn = false,};
const struct mesh_setup default_mesh_setup = { /* cfg80211_join_mesh() will pick a channel if needed */ .sync_method = IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET, .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP, .path_metric = IEEE80211_PATH_METRIC_AIRTIME, .auth_id = 0, /* open */ .ie = NULL, .ie_len = 0, .is_secure = false, .user_mpm = false, .beacon_interval = MESH_DEFAULT_BEACON_INTERVAL, .dtim_period = MESH_DEFAULT_DTIM_PERIOD,};
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev, struct mesh_setup *setup, const struct mesh_config *conf){ struct wireless_dev *wdev = dev->ieee80211_ptr; int err;
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN);
lockdep_assert_wiphy(wdev->wiphy);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) return -EOPNOTSUPP;
if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && setup->is_secure) return -EOPNOTSUPP;
if (wdev->u.mesh.id_len) return -EALREADY;
if (!setup->mesh_id_len) return -EINVAL;
if (!rdev->ops->join_mesh) return -EOPNOTSUPP;
if (wdev->links[0].cac_started) return -EBUSY;
if (!setup->chandef.chan) { /* if no channel explicitly given, use preset channel */ setup->chandef = wdev->u.mesh.preset_chandef; }
if (!setup->chandef.chan) { /* if we don't have that either, use the first usable channel */ enum nl80211_band band;
for (band = 0; band < NUM_NL80211_BANDS; band++) { struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; int i;
sband = rdev->wiphy.bands[band]; if (!sband) continue;
for (i = 0; i < sband->n_channels; i++) { chan = &sband->channels[i]; if (chan->flags & (IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR)) continue; setup->chandef.chan = chan; break; }
if (setup->chandef.chan) break; }
/* no usable channel ... */ if (!setup->chandef.chan) return -EINVAL;
setup->chandef.width = NL80211_CHAN_WIDTH_20_NOHT; setup->chandef.center_freq1 = setup->chandef.chan->center_freq; }
/* * check if basic rates are available otherwise use mandatory rates as * basic rates */ if (!setup->basic_rates) { struct ieee80211_supported_band *sband = rdev->wiphy.bands[setup->chandef.chan->band];
if (setup->chandef.chan->band == NL80211_BAND_2GHZ) { int i;
/* * Older versions selected the mandatory rates for * 2.4 GHz as well, but were broken in that only * 1 Mbps was regarded as a mandatory rate. Keep * using just 1 Mbps as the default basic rate for * mesh to be interoperable with older versions. */ for (i = 0; i < sband->n_bitrates; i++) { if (sband->bitrates[i].bitrate == 10) { setup->basic_rates = BIT(i); break; } } } else { setup->basic_rates = ieee80211_mandatory_rates(sband); } }
err = cfg80211_chandef_dfs_required(&rdev->wiphy, &setup->chandef, NL80211_IFTYPE_MESH_POINT); if (err < 0) return err; if (err > 0 && !setup->userspace_handles_dfs) return -EINVAL;
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef, NL80211_IFTYPE_MESH_POINT)) return -EINVAL;
err = rdev_join_mesh(rdev, dev, conf, setup); if (!err) { memcpy(wdev->u.mesh.id, setup->mesh_id, setup->mesh_id_len); wdev->u.mesh.id_len = setup->mesh_id_len; wdev->u.mesh.chandef = setup->chandef; wdev->u.mesh.beacon_interval = setup->beacon_interval; }
return err;}
int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_chan_def *chandef){ int err;
/* * Workaround for libertas (only!), it puts the interface * into mesh mode but doesn't implement join_mesh. Instead, * it is configured via sysfs and then joins the mesh when * you set the channel. Note that the libertas mesh isn't * compatible with 802.11 mesh. */ if (rdev->ops->libertas_set_mesh_channel) { if (chandef->width != NL80211_CHAN_WIDTH_20_NOHT) return -EINVAL;
if (!netif_running(wdev->netdev)) return -ENETDOWN;
err = rdev_libertas_set_mesh_channel(rdev, wdev->netdev, chandef->chan); if (!err) wdev->u.mesh.chandef = *chandef;
return err; }
if (wdev->u.mesh.id_len) return -EBUSY;
wdev->u.mesh.preset_chandef = *chandef; return 0;}
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev){ struct wireless_dev *wdev = dev->ieee80211_ptr; int err;
lockdep_assert_wiphy(wdev->wiphy);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) return -EOPNOTSUPP;
if (!rdev->ops->leave_mesh) return -EOPNOTSUPP;
if (!wdev->u.mesh.id_len) return -ENOTCONN;
err = rdev_leave_mesh(rdev, dev); if (!err) { wdev->conn_owner_nlportid = 0; wdev->u.mesh.id_len = 0; wdev->u.mesh.beacon_interval = 0; memset(&wdev->u.mesh.chandef, 0, sizeof(wdev->u.mesh.chandef)); rdev_set_qos_map(rdev, dev, NULL); cfg80211_sched_dfs_chan_update(rdev); }
return err;}