diff options
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/cfg.c | 10 | ||||
| -rw-r--r-- | net/mac80211/sta_info.h | 5 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 42 |
3 files changed, 52 insertions, 5 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 119a573af14..bdf9852eec5 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2427,6 +2427,7 @@ fail: static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, u8 *peer, enum nl80211_tdls_operation oper) { + struct sta_info *sta; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) @@ -2441,6 +2442,15 @@ static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, switch (oper) { case NL80211_TDLS_ENABLE_LINK: + rcu_read_lock(); + sta = sta_info_get(sdata, peer); + if (!sta) { + rcu_read_unlock(); + return -ENOLINK; + } + + set_sta_flags(sta, WLAN_STA_TDLS_PEER_AUTH); + rcu_read_unlock(); break; case NL80211_TDLS_DISABLE_LINK: return sta_info_destroy_addr(sdata, peer); diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index b6bd4e9d872..c10e2e8632b 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -45,7 +45,9 @@ * station in power-save mode, reply when the driver unblocks. * @WLAN_STA_PS_DRIVER_BUF: Station has frames pending in driver internal * buffers. Automatically cleared on station wake-up. - * @WLAN_STA_TDLS_PEER: station is a TDLS peer. + * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. + * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct + * packets. This means the link is enabled. */ enum ieee80211_sta_info_flags { WLAN_STA_AUTH = 1<<0, @@ -63,6 +65,7 @@ enum ieee80211_sta_info_flags { WLAN_STA_PSPOLL = 1<<13, WLAN_STA_PS_DRIVER_BUF = 1<<14, WLAN_STA_TDLS_PEER = 1<<15, + WLAN_STA_TDLS_PEER_AUTH = 1<<16, }; #define STA_TID_NUM 16 diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 542272acfc1..0ca16880bbb 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1726,6 +1726,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, struct sta_info *sta = NULL; u32 sta_flags = 0; struct sk_buff *tmp_skb; + bool tdls_direct = false; if (unlikely(skb->len < ETH_HLEN)) { ret = NETDEV_TX_OK; @@ -1837,11 +1838,43 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, break; #endif case NL80211_IFTYPE_STATION: - memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN); - if (sdata->u.mgd.use_4addr && - cpu_to_be16(ethertype) != sdata->control_port_protocol) { - fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); + if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { + rcu_read_lock(); + sta = sta_info_get(sdata, skb->data); + if (sta) + sta_flags = get_sta_flags(sta); + rcu_read_unlock(); + + /* + * If the TDLS link is enabled, send everything + * directly. Otherwise, allow TDLS setup frames + * to be transmitted indirectly. + */ + tdls_direct = + (sta_flags & WLAN_STA_TDLS_PEER) && + ((sta_flags & WLAN_STA_TDLS_PEER_AUTH) || + !(ethertype == ETH_P_TDLS && skb->len > 14 && + skb->data[14] == WLAN_TDLS_SNAP_RFTYPE)); + } + + if (tdls_direct) { + /* link during setup - throw out frames to peer */ + if (!(sta_flags & WLAN_STA_TDLS_PEER_AUTH)) { + ret = NETDEV_TX_OK; + goto fail; + } + + /* DA SA BSSID */ + memcpy(hdr.addr1, skb->data, ETH_ALEN); + memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN); + memcpy(hdr.addr3, sdata->u.mgd.bssid, ETH_ALEN); + hdrlen = 24; + } else if (sdata->u.mgd.use_4addr && + cpu_to_be16(ethertype) != sdata->control_port_protocol) { + fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | + IEEE80211_FCTL_TODS); /* RA TA DA SA */ + memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN); memcpy(hdr.addr2, sdata->vif.addr, ETH_ALEN); memcpy(hdr.addr3, skb->data, ETH_ALEN); memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN); @@ -1849,6 +1882,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, } else { fc |= cpu_to_le16(IEEE80211_FCTL_TODS); /* BSSID SA DA */ + memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN); memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN); memcpy(hdr.addr3, skb->data, ETH_ALEN); hdrlen = 24; |