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authorJouni Malinen <j@w1.fi>2009-11-01 11:30:48 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-11-02 15:43:26 -0500
commit70541839dd2eacb521fa4f8515ab696599b36ea3 (patch)
tree3e82863e254f33485c00e95a88af9d33fa4c7c4e /drivers/net/wireless/mac80211_hwsim.c
parentc5f8289cd9b2e31fca506cb82f4aaa5ffc468602 (diff)
downloadlinux-stericsson-70541839dd2eacb521fa4f8515ab696599b36ea3.tar.gz
mac80211_hwsim: Check idle state on TX
Track the idle state for hwsim radios and reject TX if mac80211 is trying to transmit something when the radio is supposed to be idle. In addition, do not deliver frames if the receiving radio is in the idle state. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mac80211_hwsim.c')
-rw-r--r--drivers/net/wireless/mac80211_hwsim.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index d2b2e5e739b7..58c357eaf216 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -284,7 +284,7 @@ struct mac80211_hwsim_data {
struct ieee80211_channel *channel;
unsigned long beacon_int; /* in jiffies unit */
unsigned int rx_filter;
- int started;
+ bool started, idle;
struct timer_list beacon_timer;
enum ps_mode {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
@@ -402,6 +402,12 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_rx_status rx_status;
+ if (data->idle) {
+ printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
+ wiphy_name(hw->wiphy));
+ return false;
+ }
+
memset(&rx_status, 0, sizeof(rx_status));
/* TODO: set mactime */
rx_status.freq = data->channel->center_freq;
@@ -428,7 +434,8 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
if (data == data2)
continue;
- if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
+ if (data2->idle || !data2->started ||
+ !hwsim_ps_rx_ok(data2, skb) ||
!data->channel || !data2->channel ||
data->channel->center_freq != data2->channel->center_freq ||
!(data->group & data2->group))
@@ -571,6 +578,8 @@ static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
!!(conf->flags & IEEE80211_CONF_IDLE),
!!(conf->flags & IEEE80211_CONF_PS));
+ data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
+
data->channel = conf->channel;
if (!data->started || !data->beacon_int)
del_timer(&data->beacon_timer);