• Markus Theil's avatar
    nl80211: add src and dst addr attributes for control port tx/rx · 8c3ed7aa
    Markus Theil authored
    When using control port over nl80211 in AP mode with
    pre-authentication, APs need to forward frames to other
    APs defined by their MAC address. Before this patch,
    pre-auth frames reaching user space over nl80211 control
    port  have no longer any information about the dest attached,
    which can be used for forwarding to a controller or injecting
    the frame back to a ethernet interface over a AF_PACKET
    socket.
    Analog problems exist, when forwarding pre-auth frames from
    AP -> STA.
    
    This patch therefore adds the NL80211_ATTR_DST_MAC and
    NL80211_ATTR_SRC_MAC attributes to provide more context
    information when forwarding.
    The respective arguments are optional on tx and included on rx.
    Therefore unaware existing software is not affected.
    
    Software which wants to detect this feature, can do so
    by checking against:
      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_MAC_ADDRS
    Signed-off-by: default avatarMarkus Theil <markus.theil@tu-ilmenau.de>
    Link: https://lore.kernel.org/r/20200115125522.3755-1-markus.theil@tu-ilmenau.de
    [split into separate cfg80211/mac80211 patches]
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    8c3ed7aa
trace.h 94.7 KB