iwl3965: remove useless network and duplicate checking

mac802 can handle duplicate packages on its own, so let it do it.
The patch is based on patch from Johannes Berg for iwl4965.

Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 25 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 94e177a9f51c..c2a76785b665 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -514,6 +514,23 @@ static inline void iwl3945_dbg_report_frame(struct iwl3945_priv *priv,
 }
 #endif
 
+/* This is necessary only for a number of statistics, see the caller. */
+static int iwl3945_is_network_packet(struct iwl3945_priv *priv,
+                struct ieee80211_hdr *header)
+{
+        /* Filter incoming packets to determine if they are targeted toward
+         * this network, discarding packets coming from ourselves */
+        switch (priv->iw_mode) {
+        case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
+                /* packets to our IBSS update information */
+                return !compare_ether_addr(header->addr3, priv->bssid);
+        case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
+                /* packets to our IBSS update information */
+                return !compare_ether_addr(header->addr2, priv->bssid);
+        default:
+                return 1;
+        }
+}
 
 static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
                                  struct sk_buff *skb,
@@ -608,12 +625,12 @@ static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
         stats->flag |= RX_FLAG_RADIOTAP;
 }
 
-static void iwl3945_handle_data_packet(struct iwl3945_priv *priv, int is_data,
+static void iwl3945_pass_packet_to_mac80211(struct iwl3945_priv *priv,
                                    struct iwl3945_rx_mem_buffer *rxb,
                                    struct ieee80211_rx_status *stats)
 {
-        struct ieee80211_hdr *hdr;
         struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
         short len = le16_to_cpu(rx_hdr->len);
@@ -635,8 +652,6 @@ static void iwl3945_handle_data_packet(struct iwl3945_priv *priv, int is_data,
         /* Set the size of the skb to the size of the frame */
         skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
 
-        hdr = (void *)rxb->skb->data;
-
         if (iwl3945_param_hwcrypto)
                 iwl3945_set_decrypted_flag(priv, rxb->skb,
                                        le32_to_cpu(rx_end->status), stats);
@@ -645,7 +660,7 @@ static void iwl3945_handle_data_packet(struct iwl3945_priv *priv, int is_data,
                 iwl3945_add_radiotap(priv, rxb->skb, rx_hdr, stats);
 
 #ifdef CONFIG_IWL3945_LEDS
-        if (is_data)
+        if (ieee80211_is_data(hdr->frame_control))
                 priv->rxtxpackets += len;
 #endif
         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
@@ -694,7 +709,7 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
         }
 
         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
-                iwl3945_handle_data_packet(priv, 1, rxb, &rx_status);
+                iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
                 return;
         }
 
@@ -842,27 +857,12 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
                         }
                 }
 
-                iwl3945_handle_data_packet(priv, 0, rxb, &rx_status);
-                break;
-
-        case IEEE80211_FTYPE_CTL:
-                break;
-
-        case IEEE80211_FTYPE_DATA: {
-                DECLARE_MAC_BUF(mac1);
-                DECLARE_MAC_BUF(mac2);
-                DECLARE_MAC_BUF(mac3);
-
-                if (unlikely(iwl3945_is_duplicate_packet(priv, header)))
-                        IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n",
-                                       print_mac(mac1, header->addr1),
-                                       print_mac(mac2, header->addr2),
-                                       print_mac(mac3, header->addr3));
-                else
-                        iwl3945_handle_data_packet(priv, 1, rxb, &rx_status);
+        case IEEE80211_FTYPE_DATA:
+                /* fall through */
+        default:
+                iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
                 break;
         }
-        }
 }
 
 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl3945_priv *priv, void *ptr,