diff options
| author |   Alexander Wetzel <alexander@wetzel-home.de> | 2019-03-19 21:34:08 +0100 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2019-04-26 13:02:11 +0200 |
| commit | 96fc6efb9ad9d0cd8cbb4462f0eb2a07092649e6 (patch) | |
| tree | 5c17bac2a0df2ddcc155aaaa158c32ab5f87f4bd /net/mac80211/sta_info.c | |
| parent | nl80211/cfg80211: Extended Key ID support (diff) | |
| download | wireguard-linux-96fc6efb9ad9d0cd8cbb4462f0eb2a07092649e6.tar.xz wireguard-linux-96fc6efb9ad9d0cd8cbb4462f0eb2a07092649e6.zip | |
mac80211: IEEE 802.11 Extended Key ID support
Add support for Extended Key ID as defined in IEEE 802.11-2016.
- Implement the nl80211 API for Extended Key ID
- Extend mac80211 API to allow drivers to support Extended Key ID
- Enable Extended Key ID by default for drivers only supporting SW
crypto (e.g. mac80211_hwsim)
- Allow unicast Tx usage to be supressed (IEEE80211_KEY_FLAG_NO_AUTO_TX)
- Select the decryption key based on the MPDU keyid
- Enforce existing assumptions in the code that rekeys don't change the
cipher
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
[remove module parameter]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/sta_info.c')
| -rw-r--r-- | net/mac80211/sta_info.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index a81e1279a76d..a4932ee3595c 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -347,6 +347,15 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, sta->sta.max_rx_aggregation_subframes = local->hw.max_rx_aggregation_subframes; + /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. + * The Tx path starts to use a key as soon as the key slot ptk_idx + * references to is not NULL. To not use the initial Rx-only key + * prematurely for Tx initialize ptk_idx to an impossible PTK keyid + * which always will refer to a NULL key. + */ + BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); + sta->ptk_idx = INVALID_PTK_KEYIDX; + sta->local = local; sta->sdata = sdata; sta->rx_stats.last_rx = jiffies; |