Commits
Johannes Berg committed 9e478066eae
mac80211: fix MU-MIMO follow-MAC mode There are two bugs in the follow-MAC code: * it treats the radiotap header as the 802.11 header (therefore it can't possibly work) * it doesn't verify that the skb data it accesses is actually present in the header, which is mitigated by the first point Fix this by moving all of this out into a separate function. This function copies the data it needs using skb_copy_bits() to make sure it can be accessed if it's paged, and offsets that by the possibly present vendor radiotap header. This also makes all those conditions more readable. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>