diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 94e177a..c2a7678 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -514,6 +514,23 @@
 }
 #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 @@
 	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 @@
 	/* 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 @@
 		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 @@
 	}
 
 	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;
 	}
 
@@ -842,26 +857,11 @@
 			}
 		}
 
-		iwl3945_handle_data_packet(priv, 0, rxb, &rx_status);
+	case IEEE80211_FTYPE_DATA:
+		/* fall through */
+	default:
+		iwl3945_pass_packet_to_mac80211(priv, 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);
-		break;
-	}
 	}
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index 9c0a09e..a7ef59b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -510,8 +510,6 @@
 	u8 data[0];		/* data in same order as "size" elements */
 };
 
-#define IWL_IBSS_MAC_HASH_SIZE 32
-
 struct iwl3945_ibss_seq {
 	u8 mac[ETH_ALEN];
 	u16 seq_num;
@@ -569,17 +567,8 @@
 				struct iwl3945_addsta_cmd *sta, u8 flags);
 extern u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *bssid,
 			  int is_ap, u8 flags);
-extern int iwl3945_is_network_packet(struct iwl3945_priv *priv,
-				 struct ieee80211_hdr *header);
 extern int iwl3945_power_init_handle(struct iwl3945_priv *priv);
 extern int iwl3945_eeprom_init(struct iwl3945_priv *priv);
-extern void iwl3945_handle_data_packet_monitor(struct iwl3945_priv *priv,
-					   struct iwl3945_rx_mem_buffer *rxb,
-					   void *data, short len,
-					   struct ieee80211_rx_status *stats,
-					   u16 phy_flags);
-extern int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv,
-				       struct ieee80211_hdr *header);
 extern int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv);
 extern void iwl3945_rx_queue_reset(struct iwl3945_priv *priv,
 			       struct iwl3945_rx_queue *rxq);
@@ -859,14 +848,6 @@
 	u32 last_beacon_time;
 	u64 last_tsf;
 
-	/* Duplicate packet detection */
-	u16 last_seq_num;
-	u16 last_frag_num;
-	unsigned long last_packet_time;
-
-	/* Hash table for finding stations in IBSS network */
-	struct list_head ibss_mac_hash[IWL_IBSS_MAC_HASH_SIZE];
-
 	/* eeprom */
 	struct iwl3945_eeprom eeprom;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index c8d3d97..163502d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -490,8 +490,6 @@
 	u8 data[0];		/* data in same order as "size" elements */
 };
 
-#define IWL_IBSS_MAC_HASH_SIZE 32
-
 struct iwl4965_ibss_seq {
 	u8 mac[ETH_ALEN];
 	u16 seq_num;
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 7d015f8..4a22d3f 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2035,36 +2035,6 @@
 	return rc;
 }
 
-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 from our adapter are dropped (echo) */
-		if (!compare_ether_addr(header->addr2, priv->mac_addr))
-			return 0;
-		/* {broad,multi}cast packets to our IBSS go through */
-		if (is_multicast_ether_addr(header->addr1))
-			return !compare_ether_addr(header->addr3, priv->bssid);
-		/* packets to our adapter go through */
-		return !compare_ether_addr(header->addr1, priv->mac_addr);
-	case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
-		/* packets from our adapter are dropped (echo) */
-		if (!compare_ether_addr(header->addr3, priv->mac_addr))
-			return 0;
-		/* {broad,multi}cast packets to our BSS go through */
-		if (is_multicast_ether_addr(header->addr1))
-			return !compare_ether_addr(header->addr2, priv->bssid);
-		/* packets to our adapter go through */
-		return !compare_ether_addr(header->addr1, priv->mac_addr);
-	default:
-		return 1;
-	}
-
-	return 1;
-}
-
 /**
  * iwl3945_scan_cancel - Cancel any currently executing HW scan
  *
@@ -2117,20 +2087,6 @@
 	return ret;
 }
 
-static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
-{
-	/* Reset ieee stats */
-
-	/* We don't reset the net_device_stats (ieee->stats) on
-	 * re-association */
-
-	priv->last_seq_num = -1;
-	priv->last_frag_num = -1;
-	priv->last_packet_time = 0;
-
-	iwl3945_scan_cancel(priv);
-}
-
 #define MAX_UCODE_BEACON_INTERVAL	1024
 #define INTEL_CONN_LISTEN_INTERVAL	__constant_cpu_to_le16(0xA)
 
@@ -2925,72 +2881,6 @@
 	}
 }
 
-#define IWL_PACKET_RETRY_TIME HZ
-
-int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
-{
-	u16 sc = le16_to_cpu(header->seq_ctrl);
-	u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
-	u16 frag = sc & IEEE80211_SCTL_FRAG;
-	u16 *last_seq, *last_frag;
-	unsigned long *last_time;
-
-	switch (priv->iw_mode) {
-	case IEEE80211_IF_TYPE_IBSS:{
-		struct list_head *p;
-		struct iwl3945_ibss_seq *entry = NULL;
-		u8 *mac = header->addr2;
-		int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
-
-		__list_for_each(p, &priv->ibss_mac_hash[index]) {
-			entry = list_entry(p, struct iwl3945_ibss_seq, list);
-			if (!compare_ether_addr(entry->mac, mac))
-				break;
-		}
-		if (p == &priv->ibss_mac_hash[index]) {
-			entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
-			if (!entry) {
-				IWL_ERROR("Cannot malloc new mac entry\n");
-				return 0;
-			}
-			memcpy(entry->mac, mac, ETH_ALEN);
-			entry->seq_num = seq;
-			entry->frag_num = frag;
-			entry->packet_time = jiffies;
-			list_add(&entry->list, &priv->ibss_mac_hash[index]);
-			return 0;
-		}
-		last_seq = &entry->seq_num;
-		last_frag = &entry->frag_num;
-		last_time = &entry->packet_time;
-		break;
-	}
-	case IEEE80211_IF_TYPE_STA:
-		last_seq = &priv->last_seq_num;
-		last_frag = &priv->last_frag_num;
-		last_time = &priv->last_packet_time;
-		break;
-	default:
-		return 0;
-	}
-	if ((*last_seq == seq) &&
-	    time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
-		if (*last_frag == frag)
-			goto drop;
-		if (*last_frag + 1 != frag)
-			/* out-of-order fragment */
-			goto drop;
-	} else
-		*last_seq = seq;
-
-	*last_frag = frag;
-	*last_time = jiffies;
-	return 0;
-
- drop:
-	return 1;
-}
-
 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
 
 #include "iwl-spectrum.h"
@@ -6531,8 +6421,6 @@
 		break;
 	}
 
-	iwl3945_sequence_reset(priv);
-
 	iwl3945_activate_qos(priv, 0);
 
 	/* we have just associated, don't start scan too early */
@@ -7963,7 +7851,6 @@
 	struct iwl3945_priv *priv;
 	struct ieee80211_hw *hw;
 	struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
-	int i;
 	unsigned long flags;
 	DECLARE_MAC_BUF(mac);
 
@@ -8024,9 +7911,6 @@
 	spin_lock_init(&priv->sta_lock);
 	spin_lock_init(&priv->hcmd_lock);
 
-	for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
-		INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
-
 	INIT_LIST_HEAD(&priv->free_frames);
 
 	mutex_init(&priv->mutex);
@@ -8199,8 +8083,6 @@
 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
 {
 	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
-	struct list_head *p, *q;
-	int i;
 	unsigned long flags;
 
 	if (!priv)
@@ -8221,14 +8103,6 @@
 
 	iwl_synchronize_irq(priv);
 
-	/* Free MAC hash list for ADHOC */
-	for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
-		list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
-			list_del(p);
-			kfree(list_entry(p, struct iwl3945_ibss_seq, list));
-		}
-	}
-
 	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
 
 	iwl3945_rfkill_unregister(priv);