diff options
author | Jouni Malinen <j@w1.fi> | 2009-01-08 13:32:00 +0200 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2009-01-29 16:00:01 -0500 |
commit | fb7333367632c67d8b6b06fb8d906cdabb11b02a (patch) | |
tree | 337d89f2c8c033b00dfcefbbcbded3f914d51661 /include/linux/ieee80211.h | |
parent | 5394af4d86ae51b369ff243c3f75b6f9a74e164b (diff) |
mac80211: 802.11w - CCMP for management frames
Extend CCMP to support encryption and decryption of unicast management
frames.
Signed-off-by: Jouni Malinen <j@w1.fi>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux/ieee80211.h')
-rw-r--r-- | include/linux/ieee80211.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index cade2556af0e..d5165895f316 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1030,6 +1030,7 @@ enum ieee80211_category { WLAN_CATEGORY_QOS = 1, WLAN_CATEGORY_DLS = 2, WLAN_CATEGORY_BACK = 3, + WLAN_CATEGORY_PUBLIC = 4, WLAN_CATEGORY_WMM = 17, }; @@ -1186,6 +1187,35 @@ static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr) } /** + * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame + * @hdr: the frame (buffer must include at least the first octet of payload) + */ +static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) +{ + if (ieee80211_is_disassoc(hdr->frame_control) || + ieee80211_is_deauth(hdr->frame_control)) + return true; + + if (ieee80211_is_action(hdr->frame_control)) { + u8 *category; + + /* + * Action frames, excluding Public Action frames, are Robust + * Management Frames. However, if we are looking at a Protected + * frame, skip the check since the data may be encrypted and + * the frame has already been found to be a Robust Management + * Frame (by the other end). + */ + if (ieee80211_has_protected(hdr->frame_control)) + return true; + category = ((u8 *) hdr) + 24; + return *category != WLAN_CATEGORY_PUBLIC; + } + + return false; +} + +/** * ieee80211_fhss_chan_to_freq - get channel frequency * @channel: the FHSS channel * |