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-rw-r--r--include/net/mac80211.h4
-rw-r--r--net/mac80211/wpa.c9
2 files changed, 11 insertions, 2 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 61f1f37a9e2..00a50a38c7f 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -686,12 +686,16 @@ enum ieee80211_key_len {
* generation in software.
* @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates
* that the key is pairwise rather then a shared key.
+ * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a
+ * CCMP key if it requires CCMP encryption of management frames (MFP) to
+ * be done in software.
*/
enum ieee80211_key_flags {
IEEE80211_KEY_FLAG_WMM_STA = 1<<0,
IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1,
IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
IEEE80211_KEY_FLAG_PAIRWISE = 1<<3,
+ IEEE80211_KEY_FLAG_SW_MGMT = 1<<4,
};
/**
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 53e11e6ff66..9101b48ec2a 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -367,9 +367,14 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
int hdrlen, len, tail;
u8 *pos, *pn;
int i;
+ bool skip_hw;
+
+ skip_hw = (tx->key->conf.flags & IEEE80211_KEY_FLAG_SW_MGMT) &&
+ ieee80211_is_mgmt(hdr->frame_control);
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
- !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
+ !skip_hw) {
/* hwaccel - with no need for preallocated room for CCMP
* header or MIC fields */
info->control.hw_key = &tx->key->conf;
@@ -404,7 +409,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
ccmp_pn2hdr(pos, pn, key->conf.keyidx);
- if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
+ if ((key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && !skip_hw) {
/* hwaccel - with preallocated room for CCMP header */
info->control.hw_key = &tx->key->conf;
return 0;