From 8abd3f9bc476b5b7f6de1b6fb576b87ba338f7fd Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:47 +0100 Subject: [PATCH] mac80211: restrict aggregation to supported interface modes We can only support aggregation on AP/STA right now. HT isn't defined for IBSS, WDS or MESH. In the WDS/MESH cases it's not clear what to put into the IBSS field, and we don't handle that in the code at all. Also fix the code to handle VLAN correctly. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/agg-rx.c | 3 ++- net/mac80211/agg-tx.c | 16 +++++++++++++++- net/mac80211/ht.c | 3 ++- net/mac80211/rx.c | 11 +++++++++++ 4 files changed, 30 insertions(+), 3 deletions(-) diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c index 62b9feb..d7afd09 100644 --- a/net/mac80211/agg-rx.c +++ b/net/mac80211/agg-rx.c @@ -134,7 +134,8 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d memset(mgmt, 0, 24); memcpy(mgmt->da, da, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - if (sdata->vif.type == NL80211_IFTYPE_AP) + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); else memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index 6ab731f..c91b32a 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -41,7 +41,8 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, memset(mgmt, 0, 24); memcpy(mgmt->da, da, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - if (sdata->vif.type == NL80211_IFTYPE_AP) + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); else memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); @@ -180,6 +181,19 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) goto exit; } + /* + * The aggregation code is not prepared to handle + * anything but STA/AP due to the BSSID handling. + * IBSS could work in the code but isn't supported + * by drivers or the standard. + */ + if (sta->sdata->vif.type != NL80211_IFTYPE_STATION && + sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN && + sta->sdata->vif.type != NL80211_IFTYPE_AP) { + ret = -EINVAL; + goto exit; + } + spin_lock_bh(&sta->lock); /* we have tried too many times, receiver does not want A-MPDU */ diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 869ea5f..a49a8a5 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -190,7 +190,8 @@ void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, memset(mgmt, 0, 24); memcpy(mgmt->da, da, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - if (sdata->vif.type == NL80211_IFTYPE_AP) + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); else memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index f34cc66..1327d42 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1768,6 +1768,17 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) switch (mgmt->u.action.category) { case WLAN_CATEGORY_BACK: + /* + * The aggregation code is not prepared to handle + * anything but STA/AP due to the BSSID handling; + * IBSS could work in the code but isn't supported + * by drivers or the standard. + */ + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_AP_VLAN && + sdata->vif.type != NL80211_IFTYPE_AP) + return RX_DROP_MONITOR; + switch (mgmt->u.action.u.addba_req.action_code) { case WLAN_ACTION_ADDBA_REQ: if (len < (IEEE80211_MIN_ACTION_SIZE + -- 2.7.4