tree 5591e35073577767d0ffb3eadaf74a3a2e0ce9ae
parent b8da6b6a99b4b0d8d464b621ba7dcbcb08172b7d
author Johannes Berg <johannes.berg@intel.com> 1459443728 +0300
committer Johannes Berg <johannes.berg@intel.com> 1459941497 +0200

mac80211: fix last RX rate data consistency

When storing the last_rate_* values in the RX code, there's nothing
to guarantee consistency, so a concurrent reader could see, e.g.
last_rate_idx on the new value, but last_rate_flag still on the old,
getting completely bogus values in the end.

To fix this, I lifted the sta_stats_encode_rate() function from my
old rate statistics code, which encodes the entire rate data into a
single 16-bit value, avoiding the consistency issue.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>