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nl80211: Add API to support VHT MU-MIMO air sniffer

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add API to support VHT MU-MIMO air sniffer.
in MU-MIMO there are parallel frames on the air while the HW
has only one RX.
add the capability to sniff one of the MU-MIMO parallel frames by
giving the sniffer additional information so it'll know which
of the parallel frames it shall follow.

Add attribute - NL80211_ATTR_MU_MIMO_GROUP_DATA - for getting
a MU-MIMO groupID in order to monitor packets from that group
using VHT MU-MIMO.
And add attribute -NL80211_ATTR_MU_MIMO_FOLLOW_ADDR - for passing
MAC address to monitor mode.
that option will be used by VHT MU-MIMO air sniffer to follow a
station according to it's MAC address using VHT MU-MIMO.

Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Aviya Erenfeld
2016-07-05 15:23:08 +03:00
committed by Johannes Berg
parent f89e07d4cf
commit c6e6a0c8be
3 changed files with 73 additions and 2 deletions
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10
include/net/cfg80211.h
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@@ -330,6 +330,9 @@ struct ieee80211_supported_band {
* in a separate chapter.
*/
#define VHT_MUMIMO_GROUPS_DATA_LEN (WLAN_MEMBERSHIP_LEN +\
WLAN_USER_POSITION_LEN)
/**
* struct vif_params - describes virtual interface parameters
* @use_4addr: use 4-address frames
@@ -339,10 +342,13 @@ struct ieee80211_supported_band {
* This feature is only fully supported by drivers that enable the
* %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating
** only p2p devices with specified MAC.
* @vht_mumimo_groups: MU-MIMO groupID. used for monitoring only
* packets belonging to that MU-MIMO groupID.
*/
struct vif_params {
int use_4addr;
u8 macaddr[ETH_ALEN];
int use_4addr;
u8 macaddr[ETH_ALEN];
u8 vht_mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN];
};
/**