diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2010-01-08 18:06:26 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-01-12 20:02:06 +0100 |
| commit | d524215f6cad245249df8def19125ae6fd0bcc9b (patch) | |
| tree | 4ddbf4b50005a41a8ac69e2d156a78edd47f457d /net/mac80211/rx.c | |
| parent | ath9k: Fix monitor mode handling (diff) | |
| download | linux-d524215f6cad245249df8def19125ae6fd0bcc9b.tar.xz linux-d524215f6cad245249df8def19125ae6fd0bcc9b.zip | |
mac80211: use nullfunc frames for 4-addr sta detection
To detect incoming 4-addr stations, hostapd needs to receive a 4-addr
data frame from the remote station, so that it can create the AP VLAN
for it. With this patch, the mlme code emits a 4-addr nullfunc frame
immediately after assoc. On the AP side it also drops 4-addr nullfunc
frames to the cooked monitor mode interface, if the interface hasn't
been fully set up to receive 4-addr data frames yet.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index e12f39a96460..efa6d3689c5e 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1111,6 +1111,18 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) 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. |