staging/wlan-ng: code refactoring

Extract new static function from p80211netdev_rx_bh() to fix coding
style issue (too many leading tabs).

Signed-off-by: Denis Pithon <denis.pithon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/wlan-ng/p80211netdev.c b/drivers/staging/wlan-ng/p80211netdev.c
index 2da3cbb8f0fa794c31db0a67b4d8ccd41022c2ce..61a30928a9c1212662ea85c539f2302ae6c7e748 100644 (file)
--- a/drivers/staging/wlan-ng/p80211netdev.c
+++ b/drivers/staging/wlan-ng/p80211netdev.c
@@ -240,6 +240,48 @@ void p80211netdev_rx(wlandevice_t *wlandev, struct sk_buff *skb)
        tasklet_schedule(&wlandev->rx_bh);
 }
 
+#define CONV_TO_ETHER_SKIPPED  0x01
+#define CONV_TO_ETHER_FAILED   0x02
+
+/**
+ * convert_frame_to_ether - conversion from 802.11 frame to ethernet frame
+ * @wlandev: pointer to WLAN device
+ * @skb: pointer to socket buffer
+ *
+ * Returns: 0 if conversion succeeded
+ *         CONV_TO_ETHER_FAILED if conversion failed
+ *         CONV_TO_ETHER_SKIPPED if frame is ignored
+ */
+static int convert_frame_to_ether(wlandevice_t *wlandev, struct sk_buff *skb)
+{
+       struct p80211_hdr_a3 *hdr;
+
+       hdr = (struct p80211_hdr_a3 *) skb->data;
+       if (p80211_rx_typedrop(wlandev, hdr->fc))
+               return CONV_TO_ETHER_SKIPPED;
+
+       /* perform mcast filtering */
+       if (wlandev->netdev->flags & IFF_ALLMULTI) {
+               /* allow my local address through */
+               if (memcmp(hdr->a1, wlandev->netdev->dev_addr, ETH_ALEN) != 0) {
+                       /* but reject anything else that isn't multicast */
+                       if (!(hdr->a1[0] & 0x01))
+                               return CONV_TO_ETHER_SKIPPED;
+               }
+       }
+
+       if (skb_p80211_to_ether(wlandev, wlandev->ethconv, skb) == 0) {
+               skb->dev->last_rx = jiffies;
+               wlandev->linux_stats.rx_packets++;
+               wlandev->linux_stats.rx_bytes += skb->len;
+               netif_rx_ni(skb);
+               return 0;
+       }
+
+       pr_debug("p80211_to_ether failed.\n");
+       return CONV_TO_ETHER_FAILED;
+}
+
 /**
  * p80211netdev_rx_bh - deferred processing of all received frames
  *
@@ -250,7 +292,6 @@ static void p80211netdev_rx_bh(unsigned long arg)
        wlandevice_t *wlandev = (wlandevice_t *) arg;
        struct sk_buff *skb = NULL;
        netdevice_t *dev = wlandev->netdev;
-       struct p80211_hdr_a3 *hdr;
 
        /* Let's empty our our queue */
        while ((skb = skb_dequeue(&wlandev->nsd_rxq))) {
@@ -273,37 +314,8 @@ static void p80211netdev_rx_bh(unsigned long arg)
                                netif_rx_ni(skb);
                                continue;
                        } else {
-                               hdr = (struct p80211_hdr_a3 *) skb->data;
-                               if (p80211_rx_typedrop(wlandev, hdr->fc)) {
-                                       dev_kfree_skb(skb);
-                                       continue;
-                               }
-
-                               /* perform mcast filtering */
-                               if (wlandev->netdev->flags & IFF_ALLMULTI) {
-                                       /* allow my local address through */
-                                       if (memcmp
-                                           (hdr->a1, wlandev->netdev->dev_addr,
-                                            ETH_ALEN) != 0) {
-                                               /* but reject anything else that
-                                                  isn't multicast */
-                                               if (!(hdr->a1[0] & 0x01)) {
-                                                       dev_kfree_skb(skb);
-                                                       continue;
-                                               }
-                                       }
-                               }
-
-                               if (skb_p80211_to_ether
-                                   (wlandev, wlandev->ethconv, skb) == 0) {
-                                       skb->dev->last_rx = jiffies;
-                                       wlandev->linux_stats.rx_packets++;
-                                       wlandev->linux_stats.rx_bytes +=
-                                           skb->len;
-                                       netif_rx_ni(skb);
+                               if (!convert_frame_to_ether(wlandev, skb))
                                        continue;
-                               }
-                               pr_debug("p80211_to_ether failed.\n");
                        }
                }
                dev_kfree_skb(skb);