cfg80211: add channel tracking for AP and mesh
We need to know which channel is used by a running
AP and mesh for channel context accounting and
finding matching/active interface combination.
STA/IBSS have current_bss already which allows us
to check which channel a vif is tuned to.
Non-fixed channel IBSS can be handled with
additional changes.
Monitor mode is going to be handled differently.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 1fc89c4..c62bc78 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2408,6 +2408,9 @@
struct ieee80211_channel *preset_chan;
enum nl80211_channel_type preset_chantype;
+ /* for AP and mesh channel tracking */
+ struct ieee80211_channel *channel;
+
bool ps;
int ps_timeout;
diff --git a/net/wireless/ap.c b/net/wireless/ap.c
index 45199cc..fcc60d8 100644
--- a/net/wireless/ap.c
+++ b/net/wireless/ap.c
@@ -24,8 +24,10 @@
return -ENOENT;
err = rdev->ops->stop_ap(&rdev->wiphy, dev);
- if (!err)
+ if (!err) {
wdev->beacon_interval = 0;
+ wdev->channel = NULL;
+ }
return err;
}
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 3b73b07..bab3813 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -159,6 +159,7 @@
if (!err) {
memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len);
wdev->mesh_id_len = setup->mesh_id_len;
+ wdev->channel = setup->channel;
}
return err;
@@ -184,6 +185,7 @@
enum nl80211_channel_type channel_type)
{
struct ieee80211_channel *channel;
+ int err;
channel = rdev_freq_to_chan(rdev, freq, channel_type);
if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
@@ -205,9 +207,14 @@
if (!netif_running(wdev->netdev))
return -ENETDOWN;
- return rdev->ops->libertas_set_mesh_channel(&rdev->wiphy,
- wdev->netdev,
- channel);
+
+ err = rdev->ops->libertas_set_mesh_channel(&rdev->wiphy,
+ wdev->netdev,
+ channel);
+ if (!err)
+ wdev->channel = channel;
+
+ return err;
}
if (wdev->mesh_id_len)
@@ -249,8 +256,11 @@
return -ENOTCONN;
err = rdev->ops->leave_mesh(&rdev->wiphy, dev);
- if (!err)
+ if (!err) {
wdev->mesh_id_len = 0;
+ wdev->channel = NULL;
+ }
+
return err;
}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index da4406f..a7882eb 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -947,6 +947,7 @@
if (WARN_ON(!chan))
goto out;
+ wdev->channel = chan;
nl80211_ch_switch_notify(rdev, dev, freq, type, GFP_KERNEL);
out:
wdev_unlock(wdev);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 20d0fd6..12096b4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2488,6 +2488,7 @@
wdev->preset_chan = params.channel;
wdev->preset_chantype = params.channel_type;
wdev->beacon_interval = params.beacon_interval;
+ wdev->channel = params.channel;
}
return err;
}
