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ath9k_htc: Maintain individual counters for interfaces

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This is required for allowing only one IBSS interface to be
configured.

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2011-02-21 07:49:15 +05:30 committed by John W. Linville
parent 87df89579a
commit 0df8359a88
2 changed files with 40 additions and 2 deletions
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28
drivers/net/wireless/ath/ath9k/htc.h
View File

@ -206,6 +206,32 @@ struct ath9k_htc_target_stats {
#define ATH9K_HTC_MAX_VIF 2
#define INC_VIF(_priv, _type) do { \
switch (_type) { \
case NL80211_IFTYPE_STATION: \
_priv->num_sta_vif++; \
break; \
case NL80211_IFTYPE_ADHOC: \
_priv->num_ibss_vif++; \
break; \
default: \
break; \
} \
} while (0)
#define DEC_VIF(_priv, _type) do { \
switch (_type) { \
case NL80211_IFTYPE_STATION: \
_priv->num_sta_vif--; \
break; \
case NL80211_IFTYPE_ADHOC: \
_priv->num_ibss_vif--; \
break; \
default: \
break; \
} \
} while (0)
struct ath9k_htc_vif {
u8 index;
u16 seq_no;
@ -367,6 +393,8 @@ struct ath9k_htc_priv {
u8 mon_vif_idx;
u8 sta_slot;
u8 vif_sta_pos[ATH9K_HTC_MAX_VIF];
u8 num_ibss_vif;
u8 num_sta_vif;
u16 op_flags;
u16 curtxpow;

14
drivers/net/wireless/ath/ath9k/htc_drv_main.c
View File

@ -1193,9 +1193,15 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
mutex_lock(&priv->mutex);
if (priv->nvifs >= ATH9K_HTC_MAX_VIF) {
ret = -ENOBUFS;
mutex_unlock(&priv->mutex);
return ret;
return -ENOBUFS;
}
if (priv->num_ibss_vif ||
(priv->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
ath_err(common, "IBSS coexistence with other modes is not allowed\n");
mutex_unlock(&priv->mutex);
return -ENOBUFS;
}
ath9k_htc_ps_wakeup(priv);
@ -1240,6 +1246,8 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
priv->nvifs++;
priv->vif = vif;
INC_VIF(priv, vif->type);
ath_dbg(common, ATH_DBG_CONFIG,
"Attach a VIF of type: %d at idx: %d\n", vif->type, avp->index);
@ -1273,6 +1281,8 @@ static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
ath9k_htc_remove_station(priv, vif, NULL);
priv->vif = NULL;
DEC_VIF(priv, vif->type);
ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface at idx: %d\n", avp->index);
ath9k_htc_ps_restore(priv);