From b78e8ceac23655e1e06b30aa95ab11742d1ac7c0 Mon Sep 17 00:00:00 2001
From: Michal Kazior <michal.kazior@tieto.com>
Date: Fri, 29 Jun 2012 12:47:04 +0200
Subject: [PATCH] cfg80211: track monitor channel
Make it even more obvious we support single
monitor channel. This will allow us to remove
.get_channel.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/wireless/chan.c | 9 ++++++++-
net/wireless/core.c | 8 +++++++-
net/wireless/core.h | 3 +++
3 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 019401b0b5e30..434c56b92c3c1 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -82,6 +82,7 @@ int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
int freq, enum nl80211_channel_type chantype)
{
struct ieee80211_channel *chan;
+ int err;
if (!rdev->ops->set_monitor_channel)
return -EOPNOTSUPP;
@@ -92,7 +93,13 @@ int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
if (!chan)
return -EINVAL;
- return rdev->ops->set_monitor_channel(&rdev->wiphy, chan, chantype);
+ err = rdev->ops->set_monitor_channel(&rdev->wiphy, chan, chantype);
+ if (!err) {
+ rdev->monitor_channel = chan;
+ rdev->monitor_channel_type = chantype;
+ }
+
+ return err;
}
void
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 8412da7d0f25d..1b5daa73b3a93 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -730,9 +730,15 @@ void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
rdev->num_running_monitor_ifaces += num;
has_monitors_only_new = cfg80211_has_monitors_only(rdev);
- if (has_monitors_only_new != has_monitors_only_old)
+ if (has_monitors_only_new != has_monitors_only_old) {
rdev->ops->set_monitor_enabled(&rdev->wiphy,
has_monitors_only_new);
+
+ if (!has_monitors_only_new) {
+ rdev->monitor_channel = NULL;
+ rdev->monitor_channel_type = NL80211_CHAN_NO_HT;
+ }
+ }
}
static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 99acd51343b11..d5efe1b0a8f7a 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -59,6 +59,9 @@ struct cfg80211_registered_device {
int num_running_ifaces;
int num_running_monitor_ifaces;
+ struct ieee80211_channel *monitor_channel;
+ enum nl80211_channel_type monitor_channel_type;
+
/* BSSes/scanning */
spinlock_t bss_lock;
struct list_head bss_list;
--
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