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cfg80211: allow leaving MU-MIMO monitor configuration unchanged

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When changing monitor parameters, not setting the MU-MIMO attributes
should mean that they're not changed - it's documented that to turn
the feature off it's necessary to set all-zero group membership and
an invalid follow-address. This isn't implemented.

Fix this by making the parameters pointers, stop reusing the macaddr
struct member, and documenting that NULL pointers mean unchanged.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2017-04-12 10:43:49 +02:00
parent 30841f5cde
commit b0265024b8
3 changed files with 14 additions and 13 deletions
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9
include/net/cfg80211.h
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@ -370,13 +370,16 @@ static inline void wiphy_read_of_freq_limits(struct wiphy *wiphy)
* 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.
* @vht_mumimo_groups: MU-MIMO groupID, used for monitoring MU-MIMO packets
* belonging to that MU-MIMO groupID; %NULL if not changed
* @vht_mumimo_follow_addr: MU-MIMO follow address, used for monitoring
* MU-MIMO packets going to the specified station; %NULL if not changed
*/
struct vif_params {
int use_4addr;
u8 macaddr[ETH_ALEN];
u8 vht_mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN];
const u8 *vht_mumimo_groups;
const u8 *vht_mumimo_follow_addr;
};
/**