Merge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued

Back-merge from drm-fixes into drm-intel-next to sort out two things:

- interlaced support: -fixes contains a bugfix to correctly clear
  interlaced configuration bits in case the bios sets up an interlaced
  mode and we want to set up the progressive mode (current kernels
  don't support interlaced). The actual feature work to support
  interlaced depends upon (and conflicts with) this bugfix.

- forcewake voodoo to workaround missed IRQ issues: -fixes only enabled
  this for ivybridge, but some recent bug reports indicate that we
  need this on Sandybridge, too. But in a slightly different flavour
  and with other fixes and reworks on top. Additionally there are some
  forcewake cleanup patches heading to -next that would conflict with
  currrent -fixes.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 44 insertions, 11 deletions

diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index f614ce7bb6e3..b758350919ff 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -106,7 +106,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
 		if (status->flag & RX_FLAG_MMIC_ERROR)
 			goto mic_fail;
 
-		if (!(status->flag & RX_FLAG_IV_STRIPPED))
+		if (!(status->flag & RX_FLAG_IV_STRIPPED) && rx->key)
 			goto update_iv;
 
 		return RX_CONTINUE;
@@ -223,14 +223,14 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 ieee80211_tx_result
 ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
 {
-	struct sk_buff *skb = tx->skb;
+	struct sk_buff *skb;
 
 	ieee80211_tx_set_protected(tx);
 
-	do {
+	skb_queue_walk(&tx->skbs, skb) {
 		if (tkip_encrypt_skb(tx, skb) < 0)
 			return TX_DROP;
-	} while ((skb = skb->next));
+	}
 
 	return TX_CONTINUE;
 }
@@ -390,7 +390,8 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 	u8 scratch[6 * AES_BLOCK_SIZE];
 
 	if (info->control.hw_key &&
-	    !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+	    !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
+	    !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
 		/*
 		 * hwaccel has no need for preallocated room for CCMP
 		 * header or MIC fields
@@ -412,6 +413,12 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 
 	pos = skb_push(skb, CCMP_HDR_LEN);
 	memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
+
+	/* the HW only needs room for the IV, but not the actual IV */
+	if (info->control.hw_key &&
+	    (info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))
+		return 0;
+
 	hdr = (struct ieee80211_hdr *) pos;
 	pos += hdrlen;
 
@@ -442,14 +449,14 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 ieee80211_tx_result
 ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
 {
-	struct sk_buff *skb = tx->skb;
+	struct sk_buff *skb;
 
 	ieee80211_tx_set_protected(tx);
 
-	do {
+	skb_queue_walk(&tx->skbs, skb) {
 		if (ccmp_encrypt_skb(tx, skb) < 0)
 			return TX_DROP;
-	} while ((skb = skb->next));
+	}
 
 	return TX_CONTINUE;
 }
@@ -547,15 +554,22 @@ static inline void bip_ipn_swap(u8 *d, const u8 *s)
 ieee80211_tx_result
 ieee80211_crypto_aes_cmac_encrypt(struct ieee80211_tx_data *tx)
 {
-	struct sk_buff *skb = tx->skb;
-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct sk_buff *skb;
+	struct ieee80211_tx_info *info;
 	struct ieee80211_key *key = tx->key;
 	struct ieee80211_mmie *mmie;
 	u8 aad[20];
 	u64 pn64;
 
+	if (WARN_ON(skb_queue_len(&tx->skbs) != 1))
+		return TX_DROP;
+
+	skb = skb_peek(&tx->skbs);
+
+	info = IEEE80211_SKB_CB(skb);
+
 	if (info->control.hw_key)
-		return 0;
+		return TX_CONTINUE;
 
 	if (WARN_ON(skb_tailroom(skb) < sizeof(*mmie)))
 		return TX_DROP;
@@ -629,3 +643,22 @@ ieee80211_crypto_aes_cmac_decrypt(struct ieee80211_rx_data *rx)
 
 	return RX_CONTINUE;
 }
+
+ieee80211_tx_result
+ieee80211_crypto_hw_encrypt(struct ieee80211_tx_data *tx)
+{
+	struct sk_buff *skb;
+	struct ieee80211_tx_info *info = NULL;
+
+	skb_queue_walk(&tx->skbs, skb) {
+		info  = IEEE80211_SKB_CB(skb);
+
+		/* handle hw-only algorithm */
+		if (!info->control.hw_key)
+			return TX_DROP;
+	}
+
+	ieee80211_tx_set_protected(tx);
+
+	return TX_CONTINUE;
+}