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-rw-r--r--net/wireless/mesh.c155
1 files changed, 146 insertions, 9 deletions
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 73e39c171ff..092300b30c3 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -1,6 +1,9 @@
#include <linux/ieee80211.h>
+#include <linux/export.h>
#include <net/cfg80211.h>
+#include "nl80211.h"
#include "core.h"
+#include "rdev-ops.h"
/* Default values, timeouts in ms */
#define MESH_TTL 31
@@ -11,14 +14,22 @@
#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
@@ -32,6 +43,11 @@
#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,
@@ -42,24 +58,44 @@ const struct mesh_config default_mesh_config = {
.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,
};
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,
- .vendor_ie = NULL,
- .vendor_ie_len = 0,
+ .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,
- const struct mesh_setup *setup,
+ struct mesh_setup *setup,
const struct mesh_config *conf)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
@@ -72,6 +108,10 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
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->mesh_id_len)
return -EALREADY;
@@ -81,10 +121,68 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
if (!rdev->ops->join_mesh)
return -EOPNOTSUPP;
- err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup);
+ if (!setup->chandef.chan) {
+ /* if no channel explicitly given, use preset channel */
+ setup->chandef = wdev->preset_chandef;
+ }
+
+ if (!setup->chandef.chan) {
+ /* if we don't have that either, use the first usable channel */
+ enum ieee80211_band band;
+
+ for (band = 0; band < IEEE80211_NUM_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) {
+ enum nl80211_bss_scan_width scan_width;
+ struct ieee80211_supported_band *sband =
+ rdev->wiphy.bands[setup->chandef.chan->band];
+ scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
+ setup->basic_rates = ieee80211_mandatory_rates(sband,
+ scan_width);
+ }
+
+ 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->ssid, setup->mesh_id, setup->mesh_id_len);
wdev->mesh_id_len = setup->mesh_id_len;
+ wdev->chandef = setup->chandef;
}
return err;
@@ -92,7 +190,7 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
- const struct mesh_setup *setup,
+ struct mesh_setup *setup,
const struct mesh_config *conf)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
@@ -105,8 +203,43 @@ int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
return err;
}
-static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
- struct net_device *dev)
+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->chandef = *chandef;
+
+ return err;
+ }
+
+ if (wdev->mesh_id_len)
+ return -EBUSY;
+
+ wdev->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;
@@ -122,9 +255,13 @@ static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
if (!wdev->mesh_id_len)
return -ENOTCONN;
- err = rdev->ops->leave_mesh(&rdev->wiphy, dev);
- if (!err)
+ err = rdev_leave_mesh(rdev, dev);
+ if (!err) {
wdev->mesh_id_len = 0;
+ memset(&wdev->chandef, 0, sizeof(wdev->chandef));
+ rdev_set_qos_map(rdev, dev, NULL);
+ }
+
return err;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:53:21 +0000