ath9k: Clean up RX processing a bit

This makes use of the local fc variable in bit more places and uses a
common helper macro. The part of RX process that delivers skb's to
mac80211 is moved to a separate function in preparation for future
changes that will need to do this from two places. The modifications
here should not result in any functional changes.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 76abbbe..58bb26c 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -473,6 +473,37 @@ void ath_flushrecv(struct ath_softc *sc)
        spin_unlock_bh(&sc->rx.rxflushlock);
 }
 
+static void ath_rx_send_to_mac80211(struct ath_softc *sc, struct sk_buff *skb,
+                                   struct ieee80211_rx_status *rx_status)
+{
+       struct ieee80211_hdr *hdr;
+
+       hdr = (struct ieee80211_hdr *)skb->data;
+
+       /* Send the frame to mac80211 */
+       if (is_multicast_ether_addr(hdr->addr1)) {
+               int i;
+               /*
+                * Deliver broadcast/multicast frames to all suitable
+                * virtual wiphys.
+                */
+               /* TODO: filter based on channel configuration */
+               for (i = 0; i < sc->num_sec_wiphy; i++) {
+                       struct ath_wiphy *aphy = sc->sec_wiphy[i];
+                       struct sk_buff *nskb;
+                       if (aphy == NULL)
+                               continue;
+                       nskb = skb_copy(skb, GFP_ATOMIC);
+                       if (nskb)
+                               __ieee80211_rx(aphy->hw, nskb, rx_status);
+               }
+               __ieee80211_rx(sc->hw, skb, rx_status);
+       } else {
+               /* Deliver unicast frames based on receiver address */
+               __ieee80211_rx(ath_get_virt_hw(sc, hdr), skb, rx_status);
+       }
+}
+
 int ath_rx_tasklet(struct ath_softc *sc, int flush)
 {
 #define PA2DESC(_sc, _pa)                                               \
@@ -622,7 +653,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
 
                if (!(keyix == ATH9K_RXKEYIX_INVALID) && !decrypt_error) {
                        rx_status.flag |= RX_FLAG_DECRYPTED;
-               } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
+               } else if (ieee80211_has_protected(fc)
                           && !decrypt_error && skb->len >= hdrlen + 4) {
                        keyix = skb->data[hdrlen + 3] >> 6;
 
@@ -631,35 +662,12 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
                }
                if (ah->sw_mgmt_crypto &&
                    (rx_status.flag & RX_FLAG_DECRYPTED) &&
-                   ieee80211_is_mgmt(hdr->frame_control)) {
+                   ieee80211_is_mgmt(fc)) {
                        /* Use software decrypt for management frames. */
                        rx_status.flag &= ~RX_FLAG_DECRYPTED;
                }
 
-               /* Send the frame to mac80211 */
-               if (is_multicast_ether_addr(hdr->addr1)) {
-                       int i;
-                       /*
-                        * Deliver broadcast/multicast frames to all suitable
-                        * virtual wiphys.
-                        */
-                       /* TODO: filter based on channel configuration */
-                       for (i = 0; i < sc->num_sec_wiphy; i++) {
-                               struct ath_wiphy *aphy = sc->sec_wiphy[i];
-                               struct sk_buff *nskb;
-                               if (aphy == NULL)
-                                       continue;
-                               nskb = skb_copy(skb, GFP_ATOMIC);
-                               if (nskb)
-                                       __ieee80211_rx(aphy->hw, nskb,
-                                                      &rx_status);
-                       }
-                       __ieee80211_rx(sc->hw, skb, &rx_status);
-               } else {
-                       /* Deliver unicast frames based on receiver address */
-                       __ieee80211_rx(ath_get_virt_hw(sc, hdr), skb,
-                                      &rx_status);
-               }
+               ath_rx_send_to_mac80211(sc, skb, &rx_status);
 
                /* We will now give hardware our shiny new allocated skb */
                bf->bf_mpdu = requeue_skb;