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-rw-r--r--net/wireless/Makefile2
-rw-r--r--net/wireless/core.c15
-rw-r--r--net/wireless/core.h13
-rw-r--r--net/wireless/mesh.c140
-rw-r--r--net/wireless/nl80211.c137
-rw-r--r--net/wireless/util.c1
6 files changed, 284 insertions, 24 deletions
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index e77e508..55a28ab 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_WEXT_SPY) += wext-spy.o
obj-$(CONFIG_WEXT_PRIV) += wext-priv.o
cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o
-cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o
+cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o
cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o
cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o
cfg80211-$(CONFIG_CFG80211_INTERNAL_REGDB) += regdb.o
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 630bcf0..79772fc 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -332,6 +332,7 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
WARN_ON(ops->add_station && !ops->del_station);
WARN_ON(ops->add_mpath && !ops->del_mpath);
+ WARN_ON(ops->join_mesh && !ops->leave_mesh);
alloc_size = sizeof(*rdev) + sizeof_priv;
@@ -752,6 +753,9 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
cfg80211_mlme_down(rdev, dev);
wdev_unlock(wdev);
break;
+ case NL80211_IFTYPE_MESH_POINT:
+ cfg80211_leave_mesh(rdev, dev);
+ break;
default:
break;
}
@@ -775,20 +779,27 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
}
cfg80211_lock_rdev(rdev);
mutex_lock(&rdev->devlist_mtx);
-#ifdef CONFIG_CFG80211_WEXT
wdev_lock(wdev);
switch (wdev->iftype) {
+#ifdef CONFIG_CFG80211_WEXT
case NL80211_IFTYPE_ADHOC:
cfg80211_ibss_wext_join(rdev, wdev);
break;
case NL80211_IFTYPE_STATION:
cfg80211_mgd_wext_connect(rdev, wdev);
break;
+#endif
+ case NL80211_IFTYPE_MESH_POINT:
+ /* backward compat code ... */
+ if (wdev->mesh_id_up_len)
+ __cfg80211_join_mesh(rdev, dev, wdev->ssid,
+ wdev->mesh_id_up_len,
+ &default_mesh_config);
+ break;
default:
break;
}
wdev_unlock(wdev);
-#endif
rdev->opencount++;
mutex_unlock(&rdev->devlist_mtx);
cfg80211_unlock_rdev(rdev);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index ee80ad8..743203b 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -285,6 +285,19 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev);
+/* mesh */
+extern const struct mesh_config default_mesh_config;
+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);
+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);
+int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+ struct net_device *dev);
+
/* MLME */
int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
struct net_device *dev,
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
new file mode 100644
index 0000000..e0b9747
--- /dev/null
+++ b/net/wireless/mesh.c
@@ -0,0 +1,140 @@
+#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;
+}
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index c8d4d53..56508d4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -661,13 +661,14 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
CMD(add_beacon, NEW_BEACON);
CMD(add_station, NEW_STATION);
CMD(add_mpath, NEW_MPATH);
- CMD(set_mesh_params, SET_MESH_PARAMS);
+ CMD(update_mesh_params, SET_MESH_PARAMS);
CMD(change_bss, SET_BSS);
CMD(auth, AUTHENTICATE);
CMD(assoc, ASSOCIATE);
CMD(deauth, DEAUTHENTICATE);
CMD(disassoc, DISASSOCIATE);
CMD(join_ibss, JOIN_IBSS);
+ CMD(join_mesh, JOIN_MESH);
CMD(set_pmksa, SET_PMKSA);
CMD(del_pmksa, DEL_PMKSA);
CMD(flush_pmksa, FLUSH_PMKSA);
@@ -1324,11 +1325,21 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_MESH_ID]) {
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+
if (ntype != NL80211_IFTYPE_MESH_POINT)
return -EINVAL;
- params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
- params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
- change = true;
+ if (netif_running(dev))
+ return -EBUSY;
+
+ wdev_lock(wdev);
+ BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
+ IEEE80211_MAX_MESH_ID_LEN);
+ wdev->mesh_id_up_len =
+ nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+ memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+ wdev->mesh_id_up_len);
+ wdev_unlock(wdev);
}
if (info->attrs[NL80211_ATTR_4ADDR]) {
@@ -1388,12 +1399,6 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
!(rdev->wiphy.interface_modes & (1 << type)))
return -EOPNOTSUPP;
- if (type == NL80211_IFTYPE_MESH_POINT &&
- info->attrs[NL80211_ATTR_MESH_ID]) {
- params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
- params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
- }
-
if (info->attrs[NL80211_ATTR_4ADDR]) {
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
@@ -1410,6 +1415,20 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
if (IS_ERR(dev))
return PTR_ERR(dev);
+ if (type == NL80211_IFTYPE_MESH_POINT &&
+ info->attrs[NL80211_ATTR_MESH_ID]) {
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+ wdev_lock(wdev);
+ BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
+ IEEE80211_MAX_MESH_ID_LEN);
+ wdev->mesh_id_up_len =
+ nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+ memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+ wdev->mesh_id_up_len);
+ wdev_unlock(wdev);
+ }
+
return 0;
}
@@ -2543,21 +2562,32 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
}
static int nl80211_get_mesh_params(struct sk_buff *skb,
- struct genl_info *info)
+ struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
- struct mesh_config cur_params;
- int err;
struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct mesh_config cur_params;
+ int err = 0;
void *hdr;
struct nlattr *pinfoattr;
struct sk_buff *msg;
+ if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
+
if (!rdev->ops->get_mesh_params)
return -EOPNOTSUPP;
- /* Get the mesh params */
- err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
+ wdev_lock(wdev);
+ /* If not connected, get default parameters */
+ if (!wdev->mesh_id_len)
+ memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
+ else
+ err = rdev->ops->get_mesh_params(&rdev->wiphy, dev,
+ &cur_params);
+ wdev_unlock(wdev);
+
if (err)
return err;
@@ -2705,23 +2735,37 @@ do {\
#undef FILL_IN_MESH_PARAM_IF_SET
}
-static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
+static int nl80211_update_mesh_params(struct sk_buff *skb,
+ struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_config cfg;
u32 mask;
int err;
- if (!rdev->ops->set_mesh_params)
+ if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
+
+ if (!rdev->ops->update_mesh_params)
return -EOPNOTSUPP;
err = nl80211_parse_mesh_params(info, &cfg, &mask);
if (err)
return err;
- /* Apply changes */
- return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
+ wdev_lock(wdev);
+ if (!wdev->mesh_id_len)
+ err = -ENOLINK;
+
+ if (!err)
+ err = rdev->ops->update_mesh_params(&rdev->wiphy, dev,
+ mask, &cfg);
+
+ wdev_unlock(wdev);
+
+ return err;
}
static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
@@ -4505,6 +4549,41 @@ out:
return err;
}
+static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ struct mesh_config cfg;
+ int err;
+
+ /* start with default */
+ memcpy(&cfg, &default_mesh_config, sizeof(cfg));
+
+ if (info->attrs[NL80211_ATTR_MESH_PARAMS]) {
+ /* and parse parameters if given */
+ err = nl80211_parse_mesh_params(info, &cfg, NULL);
+ if (err)
+ return err;
+ }
+
+ if (!info->attrs[NL80211_ATTR_MESH_ID] ||
+ !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
+ return -EINVAL;
+
+ return cfg80211_join_mesh(rdev, dev,
+ nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+ nla_len(info->attrs[NL80211_ATTR_MESH_ID]),
+ &cfg);
+}
+
+static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+
+ return cfg80211_leave_mesh(rdev, dev);
+}
+
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
@@ -4769,10 +4848,10 @@ static struct genl_ops nl80211_ops[] = {
},
{
.cmd = NL80211_CMD_SET_MESH_PARAMS,
- .doit = nl80211_set_mesh_params,
+ .doit = nl80211_update_mesh_params,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4987,6 +5066,22 @@ static struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_JOIN_MESH,
+ .doit = nl80211_join_mesh,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
+ {
+ .cmd = NL80211_CMD_LEAVE_MESH,
+ .doit = nl80211_leave_mesh,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
};
static struct genl_multicast_group nl80211_mlme_mcgrp = {
diff --git a/net/wireless/util.c b/net/wireless/util.c
index fee020b..4de624c 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -792,6 +792,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
if (ntype != otype) {
dev->ieee80211_ptr->use_4addr = false;
+ dev->ieee80211_ptr->mesh_id_up_len = 0;
switch (otype) {
case NL80211_IFTYPE_ADHOC:
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