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Code Issues

mac80211: various wds related fixes

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SVN-Revision: 19076
This commit is contained in:
Felix Fietkau 2010-01-08 16:55:15 +00:00
parent a37ae4f128
commit c418fd661f
3 changed files with 189 additions and 0 deletions
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76
package/mac80211/patches/550-wds_assoc_dummyframe.patch Normal file
View File

@ -0,0 +1,76 @@
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -312,6 +312,38 @@ void ieee80211_send_nullfunc(struct ieee
ieee80211_tx_skb(sdata, skb);
}
+static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ __le16 fc;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr "
+ "nullfunc frame\n", sdata->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
+ memset(nullfunc, 0, 30);
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+ nullfunc->frame_control = fc;
+ memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ ieee80211_tx_skb(sdata, skb);
+}
+
/* spectrum management related things */
static void ieee80211_chswitch_work(struct work_struct *work)
{
@@ -1120,6 +1152,13 @@ static bool ieee80211_assoc_success(stru
ieee80211_set_associated(sdata, cbss, changed);
/*
+ * If we're using 4-addr mode, let the AP know that we're
+ * doing so, so that it can create the STA VLAN on its side
+ */
+ if (ifmgd->use_4addr)
+ ieee80211_send_4addr_nullfunc(local, sdata);
+
+ /*
* Start timer to probe the connection to the AP now.
* Also start the timer that will detect beacon loss.
*/
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1111,6 +1111,18 @@ ieee80211_rx_h_sta_process(struct ieee80
if (ieee80211_is_nullfunc(hdr->frame_control) ||
ieee80211_is_qos_nullfunc(hdr->frame_control)) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
+
+ /*
+ * If we receive a 4-addr nullfunc frame from a STA
+ * that was not moved to a 4-addr STA vlan yet, drop
+ * the frame to the monitor interface, to make sure
+ * that hostapd sees it
+ */
+ if (ieee80211_has_a4(hdr->frame_control) &&
+ (rx->sdata->vif.type == NL80211_IFTYPE_AP ||
+ (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
+ !rx->sdata->u.vlan.sta)))
+ return RX_DROP_MONITOR;
/*
* Update counter and free packet here to avoid
* counting this as a dropped packed.

98
package/mac80211/patches/560-vlan_sta_lookup.patch Normal file
View File

@ -0,0 +1,98 @@
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -119,6 +119,27 @@ struct sta_info *sta_info_get(struct iee
return sta;
}
+/*
+ * Get sta info either from the specified interface
+ * or from one of its vlans
+ */
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
+ while (sta) {
+ if ((sta->sdata == sdata ||
+ sta->sdata->bss == sdata->bss) &&
+ memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+ break;
+ sta = rcu_dereference(sta->hnext);
+ }
+ return sta;
+}
+
struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
int idx)
{
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -408,6 +408,9 @@ static inline u32 get_sta_flags(struct s
struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
const u8 *addr);
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+
static inline
void for_each_sta_info_type_check(struct ieee80211_local *local,
const u8 *addr,
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -148,7 +148,7 @@ static int ieee80211_add_key(struct wiph
rcu_read_lock();
if (mac_addr) {
- sta = sta_info_get(sdata, mac_addr);
+ sta = sta_info_get_bss(sdata, mac_addr);
if (!sta) {
ieee80211_key_free(key);
err = -ENOENT;
@@ -179,7 +179,7 @@ static int ieee80211_del_key(struct wiph
if (mac_addr) {
ret = -ENOENT;
- sta = sta_info_get(sdata, mac_addr);
+ sta = sta_info_get_bss(sdata, mac_addr);
if (!sta)
goto out_unlock;
@@ -226,7 +226,7 @@ static int ieee80211_get_key(struct wiph
rcu_read_lock();
if (mac_addr) {
- sta = sta_info_get(sdata, mac_addr);
+ sta = sta_info_get_bss(sdata, mac_addr);
if (!sta)
goto out;
@@ -419,7 +419,7 @@ static int ieee80211_get_station(struct
rcu_read_lock();
- sta = sta_info_get(sdata, mac);
+ sta = sta_info_get_bss(sdata, mac);
if (sta) {
ret = 0;
sta_set_sinfo(sta, sinfo);
@@ -775,7 +775,7 @@ static int ieee80211_del_station(struct
if (mac) {
rcu_read_lock();
- sta = sta_info_get(sdata, mac);
+ sta = sta_info_get_bss(sdata, mac);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
@@ -803,7 +803,7 @@ static int ieee80211_change_station(stru
rcu_read_lock();
- sta = sta_info_get(sdata, mac);
+ sta = sta_info_get_bss(sdata, mac);
if (!sta) {
rcu_read_unlock();
return -ENOENT;

15
package/mac80211/patches/570-4addr_vlan_check.patch Normal file
View File

@ -0,0 +1,15 @@
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1051,8 +1051,11 @@ ieee80211_tx_prepare(struct ieee80211_su
hdr = (struct ieee80211_hdr *) skb->data;
- if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
tx->sta = rcu_dereference(sdata->u.vlan.sta);
+ if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr)
+ return TX_DROP;
+ }
if (!tx->sta)
tx->sta = sta_info_get(sdata, hdr->addr1);