mac80211: eliminate IBSS warning in rate_lowest_index()
In IBSS mode prior to join/creation of new IBSS it is possible that
a frame from unknown station is received and an ibss_add_sta() is
called. This will cause a warning in rate_lowest_index() since the
list of supported rates of our station is not initialized yet.
The fix is to add ibss stations with a rate we received that frame
at; this single-element set will be extended later based on beacon
data. Also there is no need to store stations from a foreign IBSS.
Signed-off-by: Vladimir Koutny <vlado@ksp.sk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b19bd16..14fccf1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -876,7 +876,7 @@
int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev,
struct sk_buff *skb, u8 *bssid,
- u8 *addr);
+ u8 *addr, u64 supp_rates);
int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 46f2037..55659a7 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2863,7 +2863,8 @@
dev->name, print_mac(mac, mgmt->bssid));
ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss);
ieee80211_ibss_add_sta(dev, NULL,
- mgmt->bssid, mgmt->sa);
+ mgmt->bssid, mgmt->sa,
+ BIT(rx_status->rate_idx));
}
}
@@ -4307,12 +4308,13 @@
struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev,
struct sk_buff *skb, u8 *bssid,
- u8 *addr)
+ u8 *addr, u64 supp_rates)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
DECLARE_MAC_BUF(mac);
+ int band = local->hw.conf.channel->band;
/* TODO: Could consider removing the least recently used entry and
* allow new one to be added. */
@@ -4324,6 +4326,9 @@
return NULL;
}
+ if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid))
+ return NULL;
+
printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
@@ -4333,8 +4338,10 @@
set_sta_flags(sta, WLAN_STA_AUTHORIZED);
- sta->supp_rates[local->hw.conf.channel->band] =
- sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
+ if (supp_rates)
+ sta->supp_rates[band] = supp_rates;
+ else
+ sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band];
rate_control_rate_init(sta, local);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index e80336f..c32a0bc 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1823,8 +1823,13 @@
if (!bssid)
return 0;
if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
- (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
+ (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
+ if (!rx->sta)
+ rx->sta = ieee80211_ibss_add_sta(sdata->dev,
+ rx->skb, bssid, hdr->addr2,
+ BIT(rx->status->rate_idx));
return 1;
+ }
else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
if (!(rx->flags & IEEE80211_RX_IN_SCAN))
return 0;
@@ -1837,7 +1842,8 @@
rx->flags &= ~IEEE80211_RX_RA_MATCH;
} else if (!rx->sta)
rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
- bssid, hdr->addr2);
+ bssid, hdr->addr2,
+ BIT(rx->status->rate_idx));
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (!multicast &&
