#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include "core.h"
/* 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
/*
* Minimum interval between two consecutive PREQs originated by the same
* interface
*/
#define MESH_PREQ_MIN_INT 10
#define MESH_DIAM_TRAVERSAL_TIME 50
/*
* 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
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,
.dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT,
.dot11MeshHWMPpreqMinInterval = MESH_PREQ_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,
};
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
const u8 *mesh_id, u8 mesh_id_len,
const struct mesh_config *conf)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_setup setup = {
.mesh_id = mesh_id,
.mesh_id_len = mesh_id_len,
};
int err;
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN);
ASSERT_WDEV_LOCK(wdev);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (wdev->mesh_id_len)
return -EALREADY;
if (!mesh_id_len)
return -EINVAL;
if (!rdev->ops->join_mesh)
return -EOPNOTSUPP;
err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, &setup);
if (!err) {
memcpy(wdev->ssid, mesh_id, mesh_id_len);
wdev->mesh_id_len = mesh_id_len;
}
return err;
}
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev,
const u8 *mesh_id, u8 mesh_id_len,
const struct mesh_config *conf)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
wdev_lock(wdev);
err = __cfg80211_join_mesh(rdev, dev, mesh_id, mesh_id_len, conf);
wdev_unlock(wdev);
return err;
}
static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
ASSERT_WDEV_LOCK(wdev);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->leave_mesh)
return -EOPNOTSUPP;
if (!wdev->mesh_id_len)
return -ENOTCONN;
err = rdev->ops->leave_mesh(&rdev->wiphy, dev);
if (!err)
wdev->mesh_id_len = 0;
return err;
}
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
wdev_lock(wdev);
err = __cfg80211_leave_mesh(rdev, dev);
wdev_unlock(wdev);
return err;
}
