diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 6ca946051b82..95f7320fc9dd 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -846,7 +846,6 @@ EXPORT_SYMBOL(iwl_setup_mac);
 int iwl_init_drv(struct iwl_priv *priv)
 {
 	int ret;
-	int i;
 
 	priv->retry_rate = 1;
 	priv->ibss_beacon = NULL;
@@ -857,9 +856,6 @@ int iwl_init_drv(struct iwl_priv *priv)
 	spin_lock_init(&priv->hcmd_lock);
 	spin_lock_init(&priv->lq_mngr.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);
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 8017e57dc148..79a6941be5ab 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1017,14 +1017,6 @@ struct iwl_priv {
 	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 */
 	u8 *eeprom;
 	struct iwl_eeprom_calib_info *calib_info;
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index e0d3e2dd1d82..9c346cc9476c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -957,7 +957,7 @@ static u32 iwl_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
 	return decrypt_out;
 }
 
-static void iwl_handle_data_packet(struct iwl_priv *priv, int is_data,
+static void iwl_pass_packet_to_mac80211(struct iwl_priv *priv,
 				       int include_phy,
 				       struct iwl_rx_mem_buffer *rxb,
 				       struct ieee80211_rx_status *stats)
@@ -999,12 +999,6 @@ static void iwl_handle_data_packet(struct iwl_priv *priv, int is_data,
 		rx_start->byte_count = amsdu->byte_count;
 		rx_end = (__le32 *) (((u8 *) hdr) + len);
 	}
-	/* In monitor mode allow 802.11 ACk frames (10 bytes) */
-	if (len > priv->hw_params.max_pkt_size ||
-	    len < ((priv->iw_mode == IEEE80211_IF_TYPE_MNTR) ? 10 : 16)) {
-		IWL_WARNING("byte count out of range [16,4K] : %d\n", len);
-		return;
-	}
 
 	ampdu_status = le32_to_cpu(*rx_end);
 	skblen = ((u8 *) rx_end - (u8 *) &pkt->u.raw[0]) + sizeof(u32);
@@ -1110,73 +1104,7 @@ static void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
 	}
 }
 
-#define IWL_PACKET_RETRY_TIME HZ
-
-static int iwl_is_duplicate_packet(struct iwl_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 iwl4965_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 iwl4965_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;
-}
-
+/* This is necessary only for a number of statistics, see the caller. */
 static int iwl_is_network_packet(struct iwl_priv *priv,
 		struct ieee80211_hdr *header)
 {
@@ -1184,28 +1112,14 @@ static int iwl_is_network_packet(struct iwl_priv *priv,
 	 * 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);
+		/* 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 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);
+		/* packets to our IBSS update information */
+		return !compare_ether_addr(header->addr2, priv->bssid);
 	default:
-		break;
+		return 1;
 	}
-
-	return 1;
 }
 
 /* Called for REPLY_RX (legacy ABG frames), or
@@ -1316,9 +1230,9 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
 		rx_status.signal, rx_status.noise, rx_status.signal,
 		(unsigned long long)rx_status.mactime);
 
-
+	/* Take shortcut when only in monitor mode */
 	if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
-		iwl_handle_data_packet(priv, 1, include_phy,
+		iwl_pass_packet_to_mac80211(priv, include_phy,
 						 rxb, &rx_status);
 		return;
 	}
@@ -1333,50 +1247,14 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
 	fc = le16_to_cpu(header->frame_control);
 	switch (fc & IEEE80211_FCTL_FTYPE) {
 	case IEEE80211_FTYPE_MGMT:
+	case IEEE80211_FTYPE_DATA:
 		if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
 			iwl_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
 						header->addr2);
-		iwl_handle_data_packet(priv, 0, include_phy, rxb, &rx_status);
-		break;
-
-	case IEEE80211_FTYPE_CTL:
-		switch (fc & IEEE80211_FCTL_STYPE) {
-		case IEEE80211_STYPE_BACK_REQ:
-			IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
-			iwl_handle_data_packet(priv, 0, include_phy,
-						rxb, &rx_status);
-			break;
-		default:
-			break;
-		}
-		break;
-
-	case IEEE80211_FTYPE_DATA: {
-		DECLARE_MAC_BUF(mac1);
-		DECLARE_MAC_BUF(mac2);
-		DECLARE_MAC_BUF(mac3);
-
-		if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
-			iwl_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
-						header->addr2);
-
-		if (unlikely(!network_packet))
-			IWL_DEBUG_DROP("Dropping (non network): "
-				       "%s, %s, %s\n",
-				       print_mac(mac1, header->addr1),
-				       print_mac(mac2, header->addr2),
-				       print_mac(mac3, header->addr3));
-		else if (unlikely(iwl_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
-			iwl_handle_data_packet(priv, 1, include_phy, rxb,
-						   &rx_status);
-		break;
-	}
+		/* fall through */
 	default:
+			iwl_pass_packet_to_mac80211(priv, include_phy, rxb,
+				   &rx_status);
 		break;
 
 	}
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 499705ff8887..4129e90f360a 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -613,20 +613,6 @@ static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 	}
 }
 
-static void iwl4965_sequence_reset(struct iwl_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;
-
-	iwl_scan_cancel(priv);
-}
-
 #define MAX_UCODE_BEACON_INTERVAL	4096
 #define INTEL_CONN_LISTEN_INTERVAL	__constant_cpu_to_le16(0xA)
 
@@ -2515,8 +2501,6 @@ static void iwl4965_post_associate(struct iwl_priv *priv)
 		break;
 	}
 
-	iwl4965_sequence_reset(priv);
-
 	/* Enable Rx differential gain and sensitivity calibrations */
 	iwl_chain_noise_reset(priv);
 	priv->start_calib = 1;
@@ -4337,8 +4321,6 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
 {
 	struct iwl_priv *priv = pci_get_drvdata(pdev);
-	struct list_head *p, *q;
-	int i;
 	unsigned long flags;
 
 	if (!priv)
@@ -4367,14 +4349,6 @@ static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
 
 	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 iwl4965_ibss_seq, list));
-		}
-	}
-
 	iwl_rfkill_unregister(priv);
 	iwl4965_dealloc_ucode_pci(priv);