Merge branch 'qeth-next'

Ursula Braun says:

====================
s390: qeth patches

here are patches for the s390 qeth driver for net-next:

Patch 01 is a minor improvement for the bridgeport code in qeth.

Patches 02-07 take care about scatter/gather handling in qeth.

Patch 08 improves handling of multicast IP addresses in the qeth layer3
discipline.

Patches 09-11 improve netdev features related functions in qeth.

Patch 12 implements an outbound queue restriction for HiperSockets.

Patch 13 fixes a wrong indentation in qeth_l3_main.c causing a warning
with gcc-6.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 800 insertions, 725 deletions

diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index ec2e014e885c..bf40063de202 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -19,6 +19,7 @@
 #include <linux/seq_file.h>
 #include <linux/ethtool.h>
 #include <linux/hashtable.h>
+#include <linux/ip.h>
 
 #include <net/ipv6.h>
 #include <net/if_inet6.h>
@@ -144,6 +145,7 @@ struct qeth_perf_stats {
 	unsigned int sg_alloc_page_rx;
 	unsigned int tx_csum;
 	unsigned int tx_lin;
+	unsigned int tx_linfail;
 };
 
 /* Routing stuff */
@@ -559,7 +561,6 @@ enum qeth_ip_types {
 	QETH_IP_TYPE_NORMAL,
 	QETH_IP_TYPE_VIPA,
 	QETH_IP_TYPE_RXIP,
-	QETH_IP_TYPE_DEL_ALL_MC,
 };
 
 enum qeth_cmd_buffer_state {
@@ -740,17 +741,10 @@ struct qeth_vlan_vid {
 	unsigned short vid;
 };
 
-enum qeth_mac_disposition {
-	QETH_DISP_MAC_DELETE = 0,
-	QETH_DISP_MAC_DO_NOTHING = 1,
-	QETH_DISP_MAC_ADD = 2,
-};
-
-struct qeth_mac {
-	u8 mac_addr[OSA_ADDR_LEN];
-	u8 is_uc:1;
-	u8 disp_flag:2;
-	struct hlist_node hnode;
+enum qeth_addr_disposition {
+	QETH_DISP_ADDR_DELETE = 0,
+	QETH_DISP_ADDR_DO_NOTHING = 1,
+	QETH_DISP_ADDR_ADD = 2,
 };
 
 struct qeth_rx {
@@ -798,6 +792,8 @@ struct qeth_card {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 	struct list_head vid_list;
 	DECLARE_HASHTABLE(mac_htable, 4);
+	DECLARE_HASHTABLE(ip_htable, 4);
+	DECLARE_HASHTABLE(ip_mc_htable, 4);
 	struct work_struct kernel_thread_starter;
 	spinlock_t thread_mask_lock;
 	unsigned long thread_start_mask;
@@ -805,8 +801,6 @@ struct qeth_card {
 	unsigned long thread_running_mask;
 	struct task_struct *recovery_task;
 	spinlock_t ip_lock;
-	struct list_head ip_list;
-	struct list_head *ip_tbd_list;
 	struct qeth_ipato ipato;
 	struct list_head cmd_waiter_list;
 	/* QDIO buffer handling */
@@ -844,6 +838,19 @@ struct qeth_trap_id {
 /*some helper functions*/
 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 
+/**
+ * qeth_get_elements_for_range() -	find number of SBALEs to cover range.
+ * @start:				Start of the address range.
+ * @end:				Address after the end of the range.
+ *
+ * Returns the number of pages, and thus QDIO buffer elements, needed to cover
+ * the specified address range.
+ */
+static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
+{
+	return PFN_UP(end - 1) - PFN_DOWN(start);
+}
+
 static inline int qeth_get_micros(void)
 {
 	return (int) (get_tod_clock() >> 12);
@@ -865,6 +872,11 @@ static inline int qeth_get_ip_version(struct sk_buff *skb)
 	}
 }
 
+static inline int qeth_get_ip_protocol(struct sk_buff *skb)
+{
+	return ip_hdr(skb)->protocol;
+}
+
 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 		struct qeth_buffer_pool_entry *entry)
 {
@@ -981,12 +993,13 @@ int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
 			  int (*reply_cb)(struct qeth_card *,
 					  struct qeth_reply *, unsigned long),
 			  void *);
+int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
 						 enum qeth_ipa_funcs,
 						 __u16, __u16,
 						 enum qeth_prot_versions);
-int qeth_start_ipa_tx_checksum(struct qeth_card *);
-int qeth_set_rx_csum(struct qeth_card *, int);
+int qeth_set_features(struct net_device *, netdev_features_t);
+netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
 
 /* exports for OSN */
 int qeth_osn_assist(struct net_device *, void *, int);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index b7b74776e2ff..7dba6c8537a1 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1464,8 +1464,6 @@ static int qeth_setup_card(struct qeth_card *card)
 	card->thread_allowed_mask = 0;
 	card->thread_running_mask = 0;
 	INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
-	INIT_LIST_HEAD(&card->ip_list);
-	INIT_LIST_HEAD(card->ip_tbd_list);
 	INIT_LIST_HEAD(&card->cmd_waiter_list);
 	init_waitqueue_head(&card->wait_q);
 	/* initial options */
@@ -1500,11 +1498,6 @@ static struct qeth_card *qeth_alloc_card(void)
 	if (!card)
 		goto out;
 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
-	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
-	if (!card->ip_tbd_list) {
-		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
-		goto out_card;
-	}
 	if (qeth_setup_channel(&card->read))
 		goto out_ip;
 	if (qeth_setup_channel(&card->write))
@@ -1517,8 +1510,6 @@ static struct qeth_card *qeth_alloc_card(void)
 out_channel:
 	qeth_clean_channel(&card->read);
 out_ip:
-	kfree(card->ip_tbd_list);
-out_card:
 	kfree(card);
 out:
 	return NULL;
@@ -3757,6 +3748,14 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev,
 }
 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
 
+/* We cannot use outbound queue 3 for unicast packets on HiperSockets */
+static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
+{
+	if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
+		return 2;
+	return queue_num;
+}
+
 /**
  * Note: Function assumes that we have 4 outbound queues.
  */
@@ -3784,9 +3783,9 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
 			return card->qdio.default_out_queue;
 		}
 		if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
-			return ~tos >> 6 & 3;
+			return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
 		if (tos & IPTOS_MINCOST)
-			return 3;
+			return qeth_cut_iqd_prio(card, 3);
 		if (tos & IPTOS_RELIABILITY)
 			return 2;
 		if (tos & IPTOS_THROUGHPUT)
@@ -3797,11 +3796,12 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
 	case QETH_PRIO_Q_ING_SKB:
 		if (skb->priority > 5)
 			return 0;
-		return ~skb->priority >> 1 & 3;
+		return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
 	case QETH_PRIO_Q_ING_VLAN:
 		tci = &((struct ethhdr *)skb->data)->h_proto;
 		if (*tci == ETH_P_8021Q)
-			return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
+			return qeth_cut_iqd_prio(card, ~*(tci + 1) >>
+			(VLAN_PRIO_SHIFT + 1) & 3);
 		break;
 	default:
 		break;
@@ -3810,41 +3810,54 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
 }
 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
 
+/**
+ * qeth_get_elements_for_frags() -	find number of SBALEs for skb frags.
+ * @skb:				SKB address
+ *
+ * Returns the number of pages, and thus QDIO buffer elements, needed to cover
+ * fragmented part of the SKB. Returns zero for linear SKB.
+ */
 int qeth_get_elements_for_frags(struct sk_buff *skb)
 {
-	int cnt, length, e, elements = 0;
-	struct skb_frag_struct *frag;
-	char *data;
+	int cnt, elements = 0;
 
 	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
-		frag = &skb_shinfo(skb)->frags[cnt];
-		data = (char *)page_to_phys(skb_frag_page(frag)) +
-			frag->page_offset;
-		length = frag->size;
-		e = PFN_UP((unsigned long)data + length - 1) -
-			PFN_DOWN((unsigned long)data);
-		elements += e;
+		struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
+
+		elements += qeth_get_elements_for_range(
+			(addr_t)skb_frag_address(frag),
+			(addr_t)skb_frag_address(frag) + skb_frag_size(frag));
 	}
 	return elements;
 }
 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
 
+/**
+ * qeth_get_elements_no() -	find number of SBALEs for skb data, inc. frags.
+ * @card:			qeth card structure, to check max. elems.
+ * @skb:			SKB address
+ * @extra_elems:		extra elems needed, to check against max.
+ *
+ * Returns the number of pages, and thus QDIO buffer elements, needed to cover
+ * skb data, including linear part and fragments. Checks if the result plus
+ * extra_elems fits under the limit for the card. Returns 0 if it does not.
+ * Note: extra_elems is not included in the returned result.
+ */
 int qeth_get_elements_no(struct qeth_card *card,
-		     struct sk_buff *skb, int elems)
+		     struct sk_buff *skb, int extra_elems)
 {
-	int dlen = skb->len - skb->data_len;
-	int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
-		PFN_DOWN((unsigned long)skb->data);
-
-	elements_needed += qeth_get_elements_for_frags(skb);
+	int elements = qeth_get_elements_for_range(
+				(addr_t)skb->data,
+				(addr_t)skb->data + skb_headlen(skb)) +
+			qeth_get_elements_for_frags(skb);
 
-	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
+	if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
 		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
 			"(Number=%d / Length=%d). Discarded.\n",
-			(elements_needed+elems), skb->len);
+			elements + extra_elems, skb->len);
 		return 0;
 	}
-	return elements_needed;
+	return elements;
 }
 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
 
@@ -3859,7 +3872,7 @@ int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
 		rest = len - inpage;
 		if (rest > hroom)
 			return 1;
-		memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
+		memmove(skb->data - rest, skb->data, skb_headlen(skb));
 		skb->data -= rest;
 		skb->tail -= rest;
 		*hdr = (struct qeth_hdr *)skb->data;
@@ -3873,7 +3886,7 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
 	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
 	int offset)
 {
-	int length = skb->len - skb->data_len;
+	int length = skb_headlen(skb);
 	int length_here;
 	int element;
 	char *data;
@@ -4967,7 +4980,6 @@ static void qeth_core_free_card(struct qeth_card *card)
 	qeth_clean_channel(&card->write);
 	if (card->dev)
 		free_netdev(card->dev);
-	kfree(card->ip_tbd_list);
 	qeth_free_qdio_buffers(card);
 	unregister_service_level(&card->qeth_service_level);
 	kfree(card);
@@ -5265,8 +5277,8 @@ no_mem:
 }
 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
 
-static int qeth_setassparms_cb(struct qeth_card *card,
-			       struct qeth_reply *reply, unsigned long data)
+int qeth_setassparms_cb(struct qeth_card *card,
+			struct qeth_reply *reply, unsigned long data)
 {
 	struct qeth_ipa_cmd *cmd;
 
@@ -5294,6 +5306,7 @@ static int qeth_setassparms_cb(struct qeth_card *card,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
 
 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
 						 enum qeth_ipa_funcs ipa_func,
@@ -5788,6 +5801,7 @@ static struct {
 	{"tx do_QDIO count"},
 	{"tx csum"},
 	{"tx lin"},
+	{"tx linfail"},
 	{"cq handler count"},
 	{"cq handler time"}
 };
@@ -5848,8 +5862,9 @@ void qeth_core_get_ethtool_stats(struct net_device *dev,
 	data[32] = card->perf_stats.outbound_do_qdio_cnt;
 	data[33] = card->perf_stats.tx_csum;
 	data[34] = card->perf_stats.tx_lin;
-	data[35] = card->perf_stats.cq_cnt;
-	data[36] = card->perf_stats.cq_time;
+	data[35] = card->perf_stats.tx_linfail;
+	data[36] = card->perf_stats.cq_cnt;
+	data[37] = card->perf_stats.cq_time;
 }
 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
 
@@ -6048,74 +6063,136 @@ int qeth_core_ethtool_get_settings(struct net_device *netdev,
 }
 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
 
-static int qeth_send_checksum_command(struct qeth_card *card)
+static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
 {
+	long rxtx_arg;
 	int rc;
 
-	rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
-					  IPA_CMD_ASS_START, 0);
+	rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_START, 0);
 	if (rc) {
-		dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
-			"failed, using SW checksumming\n",
-			QETH_CARD_IFNAME(card));
+		dev_warn(&card->gdev->dev,
+			 "Starting HW checksumming for %s failed, using SW checksumming\n",
+			 QETH_CARD_IFNAME(card));
 		return rc;
 	}
-	rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
-					  IPA_CMD_ASS_ENABLE,
-					  card->info.csum_mask);
+	rxtx_arg = (cstype == IPA_OUTBOUND_CHECKSUM) ? card->info.tx_csum_mask
+						     : card->info.csum_mask;
+	rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_ENABLE,
+					  rxtx_arg);
 	if (rc) {
-		dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
-			"failed, using SW checksumming\n",
-			QETH_CARD_IFNAME(card));
+		dev_warn(&card->gdev->dev,
+			 "Enabling HW checksumming for %s failed, using SW checksumming\n",
+			 QETH_CARD_IFNAME(card));
 		return rc;
 	}
+
+	dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
+		 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
 	return 0;
 }
 
-int qeth_set_rx_csum(struct qeth_card *card, int on)
+static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
 {
 	int rc;
 
 	if (on) {
-		rc = qeth_send_checksum_command(card);
+		rc = qeth_send_checksum_on(card, cstype);
 		if (rc)
 			return -EIO;
-		dev_info(&card->gdev->dev,
-			"HW Checksumming (inbound) enabled\n");
 	} else {
-		rc = qeth_send_simple_setassparms(card,
-			IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
+		rc = qeth_send_simple_setassparms(card, cstype,
+						  IPA_CMD_ASS_STOP, 0);
 		if (rc)
 			return -EIO;
 	}
 	return 0;
 }
-EXPORT_SYMBOL_GPL(qeth_set_rx_csum);
 
-int qeth_start_ipa_tx_checksum(struct qeth_card *card)
+static int qeth_set_ipa_tso(struct qeth_card *card, int on)
 {
-	int rc = 0;
+	int rc;
 
-	if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
-		return rc;
-	rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
-					  IPA_CMD_ASS_START, 0);
-	if (rc)
-		goto err_out;
-	rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
-					  IPA_CMD_ASS_ENABLE,
-					  card->info.tx_csum_mask);
-	if (rc)
-		goto err_out;
+	QETH_CARD_TEXT(card, 3, "sttso");
 
-	dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
-	return rc;
-err_out:
-	dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
-		"failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
+	if (on) {
+		rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
+						  IPA_CMD_ASS_START, 0);
+		if (rc) {
+			dev_warn(&card->gdev->dev,
+				 "Starting outbound TCP segmentation offload for %s failed\n",
+				 QETH_CARD_IFNAME(card));
+			return -EIO;
+		}
+		dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
+	} else {
+		rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
+						  IPA_CMD_ASS_STOP, 0);
+	}
 	return rc;
 }
-EXPORT_SYMBOL_GPL(qeth_start_ipa_tx_checksum);
+
+int qeth_set_features(struct net_device *dev, netdev_features_t features)
+{
+	struct qeth_card *card = dev->ml_priv;
+	netdev_features_t changed = dev->features ^ features;
+	int rc = 0;
+
+	QETH_DBF_TEXT(SETUP, 2, "setfeat");
+	QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
+
+	if ((changed & NETIF_F_IP_CSUM)) {
+		rc = qeth_set_ipa_csum(card,
+				       features & NETIF_F_IP_CSUM ? 1 : 0,
+				       IPA_OUTBOUND_CHECKSUM);
+		if (rc)
+			changed ^= NETIF_F_IP_CSUM;
+	}
+	if ((changed & NETIF_F_RXCSUM)) {
+		rc = qeth_set_ipa_csum(card,
+					features & NETIF_F_RXCSUM ? 1 : 0,
+					IPA_INBOUND_CHECKSUM);
+		if (rc)
+			changed ^= NETIF_F_RXCSUM;
+	}
+	if ((changed & NETIF_F_TSO)) {
+		rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
+		if (rc)
+			changed ^= NETIF_F_TSO;
+	}
+
+	/* everything changed successfully? */
+	if ((dev->features ^ features) == changed)
+		return 0;
+	/* something went wrong. save changed features and return error */
+	dev->features ^= changed;
+	return -EIO;
+}
+EXPORT_SYMBOL_GPL(qeth_set_features);
+
+netdev_features_t qeth_fix_features(struct net_device *dev,
+				    netdev_features_t features)
+{
+	struct qeth_card *card = dev->ml_priv;
+
+	QETH_DBF_TEXT(SETUP, 2, "fixfeat");
+	if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
+		features &= ~NETIF_F_IP_CSUM;
+	if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
+		features &= ~NETIF_F_RXCSUM;
+	if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
+		features &= ~NETIF_F_TSO;
+		dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
+			 QETH_CARD_IFNAME(card));
+	}
+	/* if the card isn't up, remove features that require hw changes */
+	if (card->state == CARD_STATE_DOWN ||
+	    card->state == CARD_STATE_RECOVER)
+		features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
+					NETIF_F_TSO);
+	QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
+	return features;
+}
+EXPORT_SYMBOL_GPL(qeth_fix_features);
 
 static int __init qeth_core_init(void)
 {
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index e6e5b9671bf2..75b29fd2fcf4 100644
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -243,6 +243,10 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev,
 		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
 		card->qdio.default_out_queue = 2;
 	} else if (sysfs_streq(buf, "no_prio_queueing:3")) {
+		if (card->info.type == QETH_CARD_TYPE_IQD) {
+			rc = -EPERM;
+			goto out;
+		}
 		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
 		card->qdio.default_out_queue = 3;
 	} else if (sysfs_streq(buf, "no_prio_queueing")) {
diff --git a/drivers/s390/net/qeth_l2.h b/drivers/s390/net/qeth_l2.h
index 0767556404bd..29d9fb3890ad 100644
--- a/drivers/s390/net/qeth_l2.h
+++ b/drivers/s390/net/qeth_l2.h
@@ -12,4 +12,11 @@ int qeth_l2_create_device_attributes(struct device *);
 void qeth_l2_remove_device_attributes(struct device *);
 void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card);
 
+struct qeth_mac {
+	u8 mac_addr[OSA_ADDR_LEN];
+	u8 is_uc:1;
+	u8 disp_flag:2;
+	struct hlist_node hnode;
+};
+
 #endif /* __QETH_L2_H__ */
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 80b1979e8d95..9fd48de38a4c 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -404,38 +404,6 @@ static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 	return rc;
 }
 
-static netdev_features_t qeth_l2_fix_features(struct net_device *dev,
-					      netdev_features_t features)
-{
-	struct qeth_card *card = dev->ml_priv;
-
-	QETH_DBF_TEXT(SETUP, 2, "fixfeat");
-	if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
-		features &= ~NETIF_F_IP_CSUM;
-	if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
-		features &= ~NETIF_F_RXCSUM;
-	QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
-	return features;
-}
-
-static int qeth_l2_set_features(struct net_device *dev,
-				netdev_features_t features)
-{
-	struct qeth_card *card = dev->ml_priv;
-	netdev_features_t changed = dev->features ^ features;
-
-	QETH_DBF_TEXT(SETUP, 2, "setfeat");
-	QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
-
-	if (card->state == CARD_STATE_DOWN ||
-	    card->state == CARD_STATE_RECOVER)
-		return 0;
-
-	if (!(changed & NETIF_F_RXCSUM))
-		return 0;
-	return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
-}
-
 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 {
 	QETH_DBF_TEXT(SETUP , 2, "stopcard");
@@ -780,7 +748,7 @@ qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
 			qeth_l2_mac_hash(ha->addr)) {
 		if (is_uc == mac->is_uc &&
 		    !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
-			mac->disp_flag = QETH_DISP_MAC_DO_NOTHING;
+			mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 			return;
 		}
 	}
@@ -792,7 +760,7 @@ qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
 
 	memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
 	mac->is_uc = is_uc;
-	mac->disp_flag = QETH_DISP_MAC_ADD;
+	mac->disp_flag = QETH_DISP_ADDR_ADD;
 
 	hash_add(card->mac_htable, &mac->hnode,
 			qeth_l2_mac_hash(mac->mac_addr));
@@ -825,7 +793,7 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
 		qeth_l2_add_mac(card, ha, 1);
 
 	hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
-		if (mac->disp_flag == QETH_DISP_MAC_DELETE) {
+		if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
 			if (!mac->is_uc)
 				rc = qeth_l2_send_delgroupmac(card,
 						mac->mac_addr);
@@ -837,15 +805,15 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
 			hash_del(&mac->hnode);
 			kfree(mac);
 
-		} else if (mac->disp_flag == QETH_DISP_MAC_ADD) {
+		} else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
 			rc = qeth_l2_write_mac(card, mac);
 			if (rc) {
 				hash_del(&mac->hnode);
 				kfree(mac);
 			} else
-				mac->disp_flag = QETH_DISP_MAC_DELETE;
+				mac->disp_flag = QETH_DISP_ADDR_DELETE;
 		} else
-			mac->disp_flag = QETH_DISP_MAC_DELETE;
+			mac->disp_flag = QETH_DISP_ADDR_DELETE;
 	}
 
 	spin_unlock_bh(&card->mclock);
@@ -869,6 +837,7 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	int data_offset = -1;
 	int elements_needed = 0;
 	int hd_len = 0;
+	int nr_frags;
 
 	if (card->qdio.do_prio_queueing || (cast_type &&
 					card->info.is_multicast_different))
@@ -892,6 +861,23 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 	netif_stop_queue(dev);
 
+	/* fix hardware limitation: as long as we do not have sbal
+	 * chaining we can not send long frag lists
+	 */
+	if ((card->info.type != QETH_CARD_TYPE_IQD) &&
+	    !qeth_get_elements_no(card, new_skb, 0)) {
+		int lin_rc = skb_linearize(new_skb);
+
+		if (card->options.performance_stats) {
+			if (lin_rc)
+				card->perf_stats.tx_linfail++;
+			else
+				card->perf_stats.tx_lin++;
+		}
+		if (lin_rc)
+			goto tx_drop;
+	}
+
 	if (card->info.type == QETH_CARD_TYPE_OSN)
 		hdr = (struct qeth_hdr *)skb->data;
 	else {
@@ -943,6 +929,14 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (!rc) {
 		card->stats.tx_packets++;
 		card->stats.tx_bytes += tx_bytes;
+		if (card->options.performance_stats) {
+			nr_frags = skb_shinfo(new_skb)->nr_frags;
+			if (nr_frags) {
+				card->perf_stats.sg_skbs_sent++;
+				/* nr_frags + skb->data */
+				card->perf_stats.sg_frags_sent += nr_frags + 1;
+			}
+		}
 		if (new_skb != skb)
 			dev_kfree_skb_any(skb);
 		rc = NETDEV_TX_OK;
@@ -1086,8 +1080,8 @@ static const struct net_device_ops qeth_l2_netdev_ops = {
 	.ndo_vlan_rx_add_vid	= qeth_l2_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 	.ndo_tx_timeout	   	= qeth_tx_timeout,
-	.ndo_fix_features	= qeth_l2_fix_features,
-	.ndo_set_features	= qeth_l2_set_features
+	.ndo_fix_features	= qeth_fix_features,
+	.ndo_set_features	= qeth_set_features
 };
 
 static int qeth_l2_setup_netdev(struct qeth_card *card)
@@ -1118,12 +1112,25 @@ static int qeth_l2_setup_netdev(struct qeth_card *card)
 		&qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
 	card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 	if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
-		card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
-		/* Turn on RX offloading per default */
-		card->dev->features |= NETIF_F_RXCSUM;
+		card->dev->hw_features = NETIF_F_SG;
+		card->dev->vlan_features = NETIF_F_SG;
+		/* OSA 3S and earlier has no RX/TX support */
+		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
+			card->dev->hw_features |= NETIF_F_IP_CSUM;
+			card->dev->vlan_features |= NETIF_F_IP_CSUM;
+		}
+		if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
+			card->dev->hw_features |= NETIF_F_RXCSUM;
+			card->dev->vlan_features |= NETIF_F_RXCSUM;
+		}
+		/* Turn on SG per default */
+		card->dev->features |= NETIF_F_SG;
 	}
 	card->info.broadcast_capable = 1;
 	qeth_l2_request_initial_mac(card);
+	card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
+				  PAGE_SIZE;
+	card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1);
 	SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 	netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
 	netif_carrier_off(card->dev);
@@ -1135,9 +1142,6 @@ static int qeth_l2_start_ipassists(struct qeth_card *card)
 	/* configure isolation level */
 	if (qeth_set_access_ctrl_online(card, 0))
 		return -ENODEV;
-	if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
-		qeth_set_rx_csum(card, 1);
-	qeth_start_ipa_tx_checksum(card);
 	return 0;
 }
 
@@ -1206,7 +1210,8 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 contin:
 	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
 	    (card->info.type == QETH_CARD_TYPE_OSX)) {
-		if (qeth_l2_start_ipassists(card))
+		rc = qeth_l2_start_ipassists(card);
+		if (rc)
 			goto out_remove;
 	}
 
@@ -1800,6 +1805,12 @@ static int qeth_bridgeport_makerc(struct qeth_card *card,
 			dev_err(&card->gdev->dev,
 	"The device is not configured as a Bridge Port\n");
 			break;
+		case 0x2B10:
+		case 0x0010: /* OS mismatch */
+			rc = -EPERM;
+			dev_err(&card->gdev->dev,
+	"A Bridge Port is already configured by a different operating system\n");
+			break;
 		case 0x2B14:
 		case 0x0014: /* Another device is Primary */
 			switch (setcmd) {
diff --git a/drivers/s390/net/qeth_l3.h b/drivers/s390/net/qeth_l3.h
index 551a4b4c03fd..26f79533e62e 100644
--- a/drivers/s390/net/qeth_l3.h
+++ b/drivers/s390/net/qeth_l3.h
@@ -10,16 +10,23 @@
 #define __QETH_L3_H__
 
 #include "qeth_core.h"
+#include <linux/hashtable.h>
 
 #define QETH_SNIFF_AVAIL	0x0008
 
 struct qeth_ipaddr {
-	struct list_head entry;
+	struct hlist_node hnode;
 	enum qeth_ip_types type;
 	enum qeth_ipa_setdelip_flags set_flags;
 	enum qeth_ipa_setdelip_flags del_flags;
-	int is_multicast;
-	int users;
+	u8 is_multicast:1;
+	u8 in_progress:1;
+	u8 disp_flag:2;
+
+	/* is changed only for normal ip addresses
+	 * for non-normal addresses it always is  1
+	 */
+	int  ref_counter;
 	enum qeth_prot_versions proto;
 	unsigned char mac[OSA_ADDR_LEN];
 	union {
@@ -32,7 +39,24 @@ struct qeth_ipaddr {
 			unsigned int pfxlen;
 		} a6;
 	} u;
+
 };
+static inline  u64 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)
+{
+	u64  ret = 0;
+	u8 *point;
+
+	if (addr->proto == QETH_PROT_IPV6) {
+		point = (u8 *) &addr->u.a6.addr;
+		ret = get_unaligned((u64 *)point) ^
+			get_unaligned((u64 *) (point + 8));
+	}
+	if (addr->proto == QETH_PROT_IPV4) {
+		point = (u8 *) &addr->u.a4.addr;
+		ret = get_unaligned((u32 *) point);
+	}
+	return ret;
+}
 
 struct qeth_ipato_entry {
 	struct list_head entry;
@@ -60,6 +84,5 @@ int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);
 struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);
 int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);
 int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *);
-void qeth_l3_set_ip_addr_list(struct qeth_card *);
 
 #endif /* __QETH_L3_H__ */
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index ac544330daeb..bcd324e054a9 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -30,6 +30,7 @@
 #include <net/ip6_fib.h>
 #include <net/ip6_checksum.h>
 #include <net/iucv/af_iucv.h>
+#include <linux/hashtable.h>
 
 #include "qeth_l3.h"
 
@@ -57,7 +58,7 @@ static int qeth_l3_isxdigit(char *buf)
 
 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
 {
-	sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
+	sprintf(buf, "%pI4", addr);
 }
 
 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
@@ -204,104 +205,129 @@ int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 	return rc;
 }
 
-/*
- * Add IP to be added to todo list. If there is already an "add todo"
- * in this list we just incremenent the reference count.
- * Returns 0 if we  just incremented reference count.
- */
-static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
-					struct qeth_ipaddr *addr, int add)
+inline int
+qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 {
-	struct qeth_ipaddr *tmp, *t;
-	int found = 0;
+	return addr1->proto == addr2->proto &&
+		!memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
+		!memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
+}
 
-	if (card->options.sniffer)
-		return 0;
-	list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
-		if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
-		    (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
-			return 0;
-		if ((tmp->proto        == QETH_PROT_IPV4)     &&
-		    (addr->proto       == QETH_PROT_IPV4)     &&
-		    (tmp->type         == addr->type)         &&
-		    (tmp->is_multicast == addr->is_multicast) &&
-		    (tmp->u.a4.addr    == addr->u.a4.addr)    &&
-		    (tmp->u.a4.mask    == addr->u.a4.mask)) {
-			found = 1;
-			break;
-		}
-		if ((tmp->proto        == QETH_PROT_IPV6)      &&
-		    (addr->proto       == QETH_PROT_IPV6)      &&
-		    (tmp->type         == addr->type)          &&
-		    (tmp->is_multicast == addr->is_multicast)  &&
-		    (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
-		    (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
-			    sizeof(struct in6_addr)) == 0)) {
-			found = 1;
-			break;
-		}
-	}
-	if (found) {
-		if (addr->users != 0)
-			tmp->users += addr->users;
-		else
-			tmp->users += add ? 1 : -1;
-		if (tmp->users == 0) {
-			list_del(&tmp->entry);
-			kfree(tmp);
-		}
-		return 0;
+static struct qeth_ipaddr *
+qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
+{
+	struct qeth_ipaddr *addr;
+
+	if (tmp_addr->is_multicast) {
+		hash_for_each_possible(card->ip_mc_htable,  addr,
+				hnode, qeth_l3_ipaddr_hash(tmp_addr))
+			if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
+				return addr;
 	} else {
-		if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
-			list_add(&addr->entry, card->ip_tbd_list);
-		else {
-			if (addr->users == 0)
-				addr->users += add ? 1 : -1;
-			if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
-			    qeth_l3_is_addr_covered_by_ipato(card, addr)) {
-				QETH_CARD_TEXT(card, 2, "tkovaddr");
-				addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
-			}
-			list_add_tail(&addr->entry, card->ip_tbd_list);
-		}
-		return 1;
+		hash_for_each_possible(card->ip_htable,  addr,
+				hnode, qeth_l3_ipaddr_hash(tmp_addr))
+			if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
+				return addr;
 	}
+
+	return NULL;
 }
 
-int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 {
-	unsigned long flags;
 	int rc = 0;
+	struct qeth_ipaddr *addr;
 
 	QETH_CARD_TEXT(card, 4, "delip");
 
-	if (addr->proto == QETH_PROT_IPV4)
-		QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
+	if (tmp_addr->proto == QETH_PROT_IPV4)
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 	else {
-		QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
-		QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 	}
-	spin_lock_irqsave(&card->ip_lock, flags);
-	rc = __qeth_l3_insert_ip_todo(card, addr, 0);
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+
+	addr = qeth_l3_ip_from_hash(card, tmp_addr);
+	if (!addr)
+		return -ENOENT;
+
+	addr->ref_counter--;
+	if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
+		return rc;
+	if (addr->in_progress)
+		return -EINPROGRESS;
+
+	rc = qeth_l3_deregister_addr_entry(card, addr);
+
+	hash_del(&addr->hnode);
+	kfree(addr);
+
 	return rc;
 }
 
-int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 {
-	unsigned long flags;
 	int rc = 0;
+	struct qeth_ipaddr *addr;
 
 	QETH_CARD_TEXT(card, 4, "addip");
-	if (addr->proto == QETH_PROT_IPV4)
-		QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
+
+	if (tmp_addr->proto == QETH_PROT_IPV4)
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 	else {
-		QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
-		QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
+		QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
+		QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 	}
-	spin_lock_irqsave(&card->ip_lock, flags);
-	rc = __qeth_l3_insert_ip_todo(card, addr, 1);
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+
+	addr = qeth_l3_ip_from_hash(card, tmp_addr);
+	if (!addr) {
+		addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
+		if (!addr)
+			return -ENOMEM;
+
+		memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
+		addr->ref_counter = 1;
+
+		if (addr->type == QETH_IP_TYPE_NORMAL  &&
+				qeth_l3_is_addr_covered_by_ipato(card, addr)) {
+			QETH_CARD_TEXT(card, 2, "tkovaddr");
+			addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
+		}
+		hash_add(card->ip_htable, &addr->hnode,
+				qeth_l3_ipaddr_hash(addr));
+
+		/* qeth_l3_register_addr_entry can go to sleep
+		 * if we add a IPV4 addr. It is caused by the reason
+		 * that SETIP ipa cmd starts ARP staff for IPV4 addr.
+		 * Thus we should unlock spinlock, and make a protection
+		 * using in_progress variable to indicate that there is
+		 * an hardware operation with this IPV4 address
+		 */
+		if (addr->proto == QETH_PROT_IPV4) {
+			addr->in_progress = 1;
+			spin_unlock_bh(&card->ip_lock);
+			rc = qeth_l3_register_addr_entry(card, addr);
+			spin_lock_bh(&card->ip_lock);
+			addr->in_progress = 0;
+		} else
+			rc = qeth_l3_register_addr_entry(card, addr);
+
+		if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
+				(rc == IPA_RC_LAN_OFFLINE)) {
+			addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+			if (addr->ref_counter < 1) {
+				qeth_l3_delete_ip(card, addr);
+				kfree(addr);
+			}
+		} else {
+			hash_del(&addr->hnode);
+			kfree(addr);
+		}
+	} else {
+			if (addr->type == QETH_IP_TYPE_NORMAL)
+				addr->ref_counter++;
+	}
+
 	return rc;
 }
 
@@ -312,229 +338,88 @@ struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 	struct qeth_ipaddr *addr;
 
 	addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
-	if (addr == NULL) {
+	if (!addr)
 		return NULL;
-	}
+
 	addr->type = QETH_IP_TYPE_NORMAL;
+	addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 	addr->proto = prot;
+
 	return addr;
 }
 
-static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
-{
-	struct qeth_ipaddr *iptodo;
-	unsigned long flags;
-
-	QETH_CARD_TEXT(card, 4, "delmc");
-	iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
-	if (!iptodo) {
-		QETH_CARD_TEXT(card, 2, "dmcnomem");
-		return;
-	}
-	iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
-	spin_lock_irqsave(&card->ip_lock, flags);
-	if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
-		kfree(iptodo);
-	spin_unlock_irqrestore(&card->ip_lock, flags);
-}
-
-/*
- * Add/remove address to/from card's ip list, i.e. try to add or remove
- * reference to/from an IP address that is already registered on the card.
- * Returns:
- *	0  address was on card and its reference count has been adjusted,
- *	   but is still > 0, so nothing has to be done
- *	   also returns 0 if card was not on card and the todo was to delete
- *	   the address -> there is also nothing to be done
- *	1  address was not on card and the todo is to add it to the card's ip
- *	   list
- *	-1 address was on card and its reference count has been decremented
- *	   to <= 0 by the todo -> address must be removed from card
- */
-static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
-		struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
+static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 {
 	struct qeth_ipaddr *addr;
-	int found = 0;
-
-	list_for_each_entry(addr, &card->ip_list, entry) {
-		if ((addr->proto == QETH_PROT_IPV4) &&
-		    (todo->proto == QETH_PROT_IPV4) &&
-		    (addr->type == todo->type) &&
-		    (addr->u.a4.addr == todo->u.a4.addr) &&
-		    (addr->u.a4.mask == todo->u.a4.mask)) {
-			found = 1;
-			break;
-		}
-		if ((addr->proto == QETH_PROT_IPV6) &&
-		    (todo->proto == QETH_PROT_IPV6) &&
-		    (addr->type == todo->type) &&
-		    (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
-		    (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
-			    sizeof(struct in6_addr)) == 0)) {
-			found = 1;
-			break;
-		}
-	}
-	if (found) {
-		addr->users += todo->users;
-		if (addr->users <= 0) {
-			*__addr = addr;
-			return -1;
-		} else {
-			/* for VIPA and RXIP limit refcount to 1 */
-			if (addr->type != QETH_IP_TYPE_NORMAL)
-				addr->users = 1;
-			return 0;
-		}
-	}
-	if (todo->users > 0) {
-		/* for VIPA and RXIP limit refcount to 1 */
-		if (todo->type != QETH_IP_TYPE_NORMAL)
-			todo->users = 1;
-		return 1;
-	} else
-		return 0;
-}
-
-static void __qeth_l3_delete_all_mc(struct qeth_card *card,
-					unsigned long *flags)
-{
-	struct list_head fail_list;
-	struct qeth_ipaddr *addr, *tmp;
-	int rc;
-
-	INIT_LIST_HEAD(&fail_list);
-again:
-	list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
-		if (addr->is_multicast) {
-			list_del(&addr->entry);
-			spin_unlock_irqrestore(&card->ip_lock, *flags);
-			rc = qeth_l3_deregister_addr_entry(card, addr);
-			spin_lock_irqsave(&card->ip_lock, *flags);
-			if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
-				kfree(addr);
-			else
-				list_add_tail(&addr->entry, &fail_list);
-			goto again;
-		}
-	}
-	list_splice(&fail_list, &card->ip_list);
-}
-
-void qeth_l3_set_ip_addr_list(struct qeth_card *card)
-{
-	struct list_head *tbd_list;
-	struct qeth_ipaddr *todo, *addr;
-	unsigned long flags;
-	int rc;
+	struct hlist_node *tmp;
+	int i;
 
-	QETH_CARD_TEXT(card, 2, "sdiplist");
-	QETH_CARD_HEX(card, 2, &card, sizeof(void *));
+	QETH_CARD_TEXT(card, 4, "clearip");
 
-	if (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
+	if (recover && card->options.sniffer)
 		return;
 
-	spin_lock_irqsave(&card->ip_lock, flags);
-	tbd_list = card->ip_tbd_list;
-	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
-	if (!card->ip_tbd_list) {
-		QETH_CARD_TEXT(card, 0, "silnomem");
-		card->ip_tbd_list = tbd_list;
-		spin_unlock_irqrestore(&card->ip_lock, flags);
-		return;
-	} else
-		INIT_LIST_HEAD(card->ip_tbd_list);
-
-	while (!list_empty(tbd_list)) {
-		todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
-		list_del(&todo->entry);
-		if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
-			__qeth_l3_delete_all_mc(card, &flags);
-			kfree(todo);
+	spin_lock_bh(&card->ip_lock);
+
+	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
+		if (!recover) {
+			hash_del(&addr->hnode);
+			kfree(addr);
 			continue;
 		}
-		rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
-		if (rc == 0) {
-			/* nothing to be done; only adjusted refcount */
-			kfree(todo);
-		} else if (rc == 1) {
-			/* new entry to be added to on-card list */
-			spin_unlock_irqrestore(&card->ip_lock, flags);
-			rc = qeth_l3_register_addr_entry(card, todo);
-			spin_lock_irqsave(&card->ip_lock, flags);
-			if (!rc || (rc == IPA_RC_LAN_OFFLINE))
-				list_add_tail(&todo->entry, &card->ip_list);
-			else
-				kfree(todo);
-		} else if (rc == -1) {
-			/* on-card entry to be removed */
-			list_del_init(&addr->entry);
-			spin_unlock_irqrestore(&card->ip_lock, flags);
-			rc = qeth_l3_deregister_addr_entry(card, addr);
-			spin_lock_irqsave(&card->ip_lock, flags);
-			if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
-				kfree(addr);
-			else
-				list_add_tail(&addr->entry, &card->ip_list);
-			kfree(todo);
-		}
+		addr->disp_flag = QETH_DISP_ADDR_ADD;
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
-	kfree(tbd_list);
-}
 
-static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
-{
-	struct qeth_ipaddr *addr, *tmp;
-	unsigned long flags;
+	spin_unlock_bh(&card->ip_lock);
 
-	QETH_CARD_TEXT(card, 4, "clearip");
-	if (recover && card->options.sniffer)
-		return;
-	spin_lock_irqsave(&card->ip_lock, flags);
-	/* clear todo list */
-	list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
-		list_del(&addr->entry);
+	spin_lock_bh(&card->mclock);
+
+	hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
+		hash_del(&addr->hnode);
 		kfree(addr);
 	}
 
-	while (!list_empty(&card->ip_list)) {
-		addr = list_entry(card->ip_list.next,
-				  struct qeth_ipaddr, entry);
-		list_del_init(&addr->entry);
-		if (!recover || addr->is_multicast) {
-			kfree(addr);
-			continue;
-		}
-		list_add_tail(&addr->entry, card->ip_tbd_list);
-	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
-}
+	spin_unlock_bh(&card->mclock);
+
 
-static int qeth_l3_address_exists_in_list(struct list_head *list,
-		struct qeth_ipaddr *addr, int same_type)
+}
+static void qeth_l3_recover_ip(struct qeth_card *card)
 {
-	struct qeth_ipaddr *tmp;
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+	int rc;
 
-	list_for_each_entry(tmp, list, entry) {
-		if ((tmp->proto == QETH_PROT_IPV4) &&
-		    (addr->proto == QETH_PROT_IPV4) &&
-		    ((same_type && (tmp->type == addr->type)) ||
-		    (!same_type && (tmp->type != addr->type))) &&
-		    (tmp->u.a4.addr == addr->u.a4.addr))
-			return 1;
+	QETH_CARD_TEXT(card, 4, "recoverip");
+
+	spin_lock_bh(&card->ip_lock);
+
+	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
+		if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
+			if (addr->proto == QETH_PROT_IPV4) {
+				addr->in_progress = 1;
+				spin_unlock_bh(&card->ip_lock);
+				rc = qeth_l3_register_addr_entry(card, addr);
+				spin_lock_bh(&card->ip_lock);
+				addr->in_progress = 0;
+			} else
+				rc = qeth_l3_register_addr_entry(card, addr);
+
+			if (!rc) {
+				addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+				if (addr->ref_counter < 1) {
+					qeth_l3_delete_ip(card, addr);
+					kfree(addr);
+				}
+			} else {
+				hash_del(&addr->hnode);
+				kfree(addr);
+			}
+		}
+	}
 
-		if ((tmp->proto == QETH_PROT_IPV6) &&
-		    (addr->proto == QETH_PROT_IPV6) &&
-		    ((same_type && (tmp->type == addr->type)) ||
-		    (!same_type && (tmp->type != addr->type))) &&
-		    (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
-			    sizeof(struct in6_addr)) == 0))
-			return 1;
+	spin_unlock_bh(&card->ip_lock);
 
-	}
-	return 0;
 }
 
 static int qeth_l3_send_setdelmc(struct qeth_card *card,
@@ -712,27 +597,28 @@ int qeth_l3_setrouting_v6(struct qeth_card *card)
  */
 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 {
-
 	struct qeth_ipato_entry *ipatoe, *tmp;
-	unsigned long flags;
 
-	spin_lock_irqsave(&card->ip_lock, flags);
+	spin_lock_bh(&card->ip_lock);
+
 	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 		list_del(&ipatoe->entry);
 		kfree(ipatoe);
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+
+	spin_unlock_bh(&card->ip_lock);
 }
 
 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 				struct qeth_ipato_entry *new)
 {
 	struct qeth_ipato_entry *ipatoe;
-	unsigned long flags;
 	int rc = 0;
 
 	QETH_CARD_TEXT(card, 2, "addipato");
-	spin_lock_irqsave(&card->ip_lock, flags);
+
+	spin_lock_bh(&card->ip_lock);
+
 	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 		if (ipatoe->proto != new->proto)
 			continue;
@@ -743,10 +629,12 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card,
 			break;
 		}
 	}
+
 	if (!rc)
 		list_add_tail(&new->entry, &card->ipato.entries);
 
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+	spin_unlock_bh(&card->ip_lock);
+
 	return rc;
 }
 
@@ -754,10 +642,11 @@ void qeth_l3_del_ipato_entry(struct qeth_card *card,
 		enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 {
 	struct qeth_ipato_entry *ipatoe, *tmp;
-	unsigned long flags;
 
 	QETH_CARD_TEXT(card, 2, "delipato");
-	spin_lock_irqsave(&card->ip_lock, flags);
+
+	spin_lock_bh(&card->ip_lock);
+
 	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 		if (ipatoe->proto != proto)
 			continue;
@@ -768,7 +657,8 @@ void qeth_l3_del_ipato_entry(struct qeth_card *card,
 			kfree(ipatoe);
 		}
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+
+	spin_unlock_bh(&card->ip_lock);
 }
 
 /*
@@ -778,7 +668,6 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 	      const u8 *addr)
 {
 	struct qeth_ipaddr *ipaddr;
-	unsigned long flags;
 	int rc = 0;
 
 	ipaddr = qeth_l3_get_addr_buffer(proto);
@@ -797,18 +686,18 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 		ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 	} else
 		return -ENOMEM;
-	spin_lock_irqsave(&card->ip_lock, flags);
-	if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
-	    qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+
+	spin_lock_bh(&card->ip_lock);
+
+	if (!qeth_l3_ip_from_hash(card, ipaddr))
 		rc = -EEXIST;
-	spin_unlock_irqrestore(&card->ip_lock, flags);
-	if (rc) {
-		kfree(ipaddr);
-		return rc;
-	}
-	if (!qeth_l3_add_ip(card, ipaddr))
-		kfree(ipaddr);
-	qeth_l3_set_ip_addr_list(card);
+	else
+		qeth_l3_add_ip(card, ipaddr);
+
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(ipaddr);
+
 	return rc;
 }
 
@@ -831,9 +720,12 @@ void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 		ipaddr->type = QETH_IP_TYPE_VIPA;
 	} else
 		return;
-	if (!qeth_l3_delete_ip(card, ipaddr))
-		kfree(ipaddr);
-	qeth_l3_set_ip_addr_list(card);
+
+	spin_lock_bh(&card->ip_lock);
+	qeth_l3_delete_ip(card, ipaddr);
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(ipaddr);
 }
 
 /*
@@ -843,7 +735,6 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 	      const u8 *addr)
 {
 	struct qeth_ipaddr *ipaddr;
-	unsigned long flags;
 	int rc = 0;
 
 	ipaddr = qeth_l3_get_addr_buffer(proto);
@@ -857,24 +748,25 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 			memcpy(&ipaddr->u.a6.addr, addr, 16);
 			ipaddr->u.a6.pfxlen = 0;
 		}
+
 		ipaddr->type = QETH_IP_TYPE_RXIP;
 		ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 		ipaddr->del_flags = 0;
 	} else
 		return -ENOMEM;
-	spin_lock_irqsave(&card->ip_lock, flags);
-	if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
-	    qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+
+	spin_lock_bh(&card->ip_lock);
+
+	if (!qeth_l3_ip_from_hash(card, ipaddr))
 		rc = -EEXIST;
-	spin_unlock_irqrestore(&card->ip_lock, flags);
-	if (rc) {
-		kfree(ipaddr);
-		return rc;
-	}
-	if (!qeth_l3_add_ip(card, ipaddr))
-		kfree(ipaddr);
-	qeth_l3_set_ip_addr_list(card);
-	return 0;
+	else
+		qeth_l3_add_ip(card, ipaddr);
+
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(ipaddr);
+
+	return rc;
 }
 
 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
@@ -896,9 +788,12 @@ void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 		ipaddr->type = QETH_IP_TYPE_RXIP;
 	} else
 		return;
-	if (!qeth_l3_delete_ip(card, ipaddr))
-		kfree(ipaddr);
-	qeth_l3_set_ip_addr_list(card);
+
+	spin_lock_bh(&card->ip_lock);
+	qeth_l3_delete_ip(card, ipaddr);
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(ipaddr);
 }
 
 static int qeth_l3_register_addr_entry(struct qeth_card *card,
@@ -908,6 +803,7 @@ static int qeth_l3_register_addr_entry(struct qeth_card *card,
 	int rc = 0;
 	int cnt = 3;
 
+
 	if (addr->proto == QETH_PROT_IPV4) {
 		QETH_CARD_TEXT(card, 2, "setaddr4");
 		QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
@@ -1013,36 +909,6 @@ static int qeth_l3_setadapter_parms(struct qeth_card *card)
 	return rc;
 }
 
-static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
-			struct qeth_reply *reply, unsigned long data)
-{
-	struct qeth_ipa_cmd *cmd;
-
-	QETH_CARD_TEXT(card, 4, "defadpcb");
-
-	cmd = (struct qeth_ipa_cmd *) data;
-	if (cmd->hdr.return_code == 0) {
-		cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
-		if (cmd->hdr.prot_version == QETH_PROT_IPV4)
-			card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
-		if (cmd->hdr.prot_version == QETH_PROT_IPV6)
-			card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
-	}
-	if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
-	    cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
-		card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
-		QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
-	}
-	if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
-	    cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
-		card->info.tx_csum_mask =
-			cmd->data.setassparms.data.flags_32bit;
-		QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
-	}
-
-	return 0;
-}
-
 #ifdef CONFIG_QETH_IPV6
 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 		enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
@@ -1056,7 +922,7 @@ static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 	if (!iob)
 		return -ENOMEM;
 	rc = qeth_send_setassparms(card, iob, 0, 0,
-				   qeth_l3_default_setassparms_cb, NULL);
+				   qeth_setassparms_cb, NULL);
 	return rc;
 }
 #endif
@@ -1291,47 +1157,6 @@ out:
 	return rc;
 }
 
-static void qeth_l3_start_ipa_checksum(struct qeth_card *card)
-{
-	QETH_CARD_TEXT(card, 3, "strtcsum");
-	if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)
-	    && (card->dev->features & NETIF_F_RXCSUM))
-		qeth_set_rx_csum(card, 1);
-}
-
-static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
-{
-	QETH_CARD_TEXT(card, 3, "strttxcs");
-	qeth_start_ipa_tx_checksum(card);
-}
-
-static int qeth_l3_start_ipa_tso(struct qeth_card *card)
-{
-	int rc;
-
-	QETH_CARD_TEXT(card, 3, "sttso");
-
-	if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
-		dev_info(&card->gdev->dev,
-			"Outbound TSO not supported on %s\n",
-			QETH_CARD_IFNAME(card));
-		rc = -EOPNOTSUPP;
-	} else {
-		rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
-						  IPA_CMD_ASS_START, 0);
-		if (rc)
-			dev_warn(&card->gdev->dev, "Starting outbound TCP "
-				"segmentation offload for %s failed\n",
-				QETH_CARD_IFNAME(card));
-		else
-			dev_info(&card->gdev->dev,
-				"Outbound TSO enabled\n");
-	}
-	if (rc)
-		card->dev->features &= ~NETIF_F_TSO;
-	return rc;
-}
-
 static int qeth_l3_start_ipassists(struct qeth_card *card)
 {
 	QETH_CARD_TEXT(card, 3, "strtipas");
@@ -1345,9 +1170,6 @@ static int qeth_l3_start_ipassists(struct qeth_card *card)
 	qeth_l3_start_ipa_multicast(card);		/* go on*/
 	qeth_l3_start_ipa_ipv6(card);		/* go on*/
 	qeth_l3_start_ipa_broadcast(card);		/* go on*/
-	qeth_l3_start_ipa_checksum(card);		/* go on*/
-	qeth_l3_start_ipa_tx_checksum(card);
-	qeth_l3_start_ipa_tso(card);		/* go on*/
 	return 0;
 }
 
@@ -1507,31 +1329,99 @@ qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
 	return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
 }
 
-static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
-				struct net_device *dev)
+static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
 {
 	ip_eth_mc_map(ipm, mac);
 }
 
-static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
+static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	int i;
+
+	hash_for_each(card->ip_mc_htable, i, addr, hnode)
+		addr->disp_flag = QETH_DISP_ADDR_DELETE;
+
+}
+
+static void qeth_l3_add_all_new_mc(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+	int rc;
+
+	hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
+		if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
+			rc = qeth_l3_register_addr_entry(card, addr);
+			if (!rc || (rc == IPA_RC_LAN_OFFLINE))
+				addr->ref_counter = 1;
+			else {
+				hash_del(&addr->hnode);
+				kfree(addr);
+			}
+		}
+	}
+
+}
+
+static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
+{
+	struct qeth_ipaddr *addr;
+	struct hlist_node *tmp;
+	int i;
+	int rc;
+
+	hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
+		if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
+			rc = qeth_l3_deregister_addr_entry(card, addr);
+			if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
+				hash_del(&addr->hnode);
+				kfree(addr);
+			}
+		}
+	}
+
+}
+
+
+static void
+qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
 {
-	struct qeth_ipaddr *ipm;
 	struct ip_mc_list *im4;
+	struct qeth_ipaddr *tmp, *ipm;
 	char buf[MAX_ADDR_LEN];
 
 	QETH_CARD_TEXT(card, 4, "addmc");
+
+	tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+		if (!tmp)
+			return;
+
 	for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
 	     im4 = rcu_dereference(im4->next_rcu)) {
-		qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
-		ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
-		if (!ipm)
-			continue;
-		ipm->u.a4.addr = im4->multiaddr;
-		memcpy(ipm->mac, buf, OSA_ADDR_LEN);
-		ipm->is_multicast = 1;
-		if (!qeth_l3_add_ip(card, ipm))
-			kfree(ipm);
+		qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
+
+		tmp->u.a4.addr = im4->multiaddr;
+		memcpy(tmp->mac, buf, sizeof(tmp->mac));
+
+		ipm = qeth_l3_ip_from_hash(card, tmp);
+		if (ipm) {
+			ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+		} else {
+			ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+			if (!ipm)
+				continue;
+			memcpy(ipm->mac, buf, sizeof(tmp->mac));
+			ipm->u.a4.addr = im4->multiaddr;
+			ipm->is_multicast = 1;
+			ipm->disp_flag = QETH_DISP_ADDR_ADD;
+			hash_add(card->ip_mc_htable,
+					&ipm->hnode, qeth_l3_ipaddr_hash(ipm));
+		}
 	}
+
+	kfree(tmp);
 }
 
 /* called with rcu_read_lock */
@@ -1541,6 +1431,7 @@ static void qeth_l3_add_vlan_mc(struct qeth_card *card)
 	u16 vid;
 
 	QETH_CARD_TEXT(card, 4, "addmcvl");
+
 	if (!qeth_is_supported(card, IPA_FULL_VLAN))
 		return;
 
@@ -1555,7 +1446,7 @@ static void qeth_l3_add_vlan_mc(struct qeth_card *card)
 		in_dev = __in_dev_get_rcu(netdev);
 		if (!in_dev)
 			continue;
-		qeth_l3_add_mc(card, in_dev);
+		qeth_l3_add_mc_to_hash(card, in_dev);
 	}
 }
 
@@ -1564,36 +1455,60 @@ static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
 	struct in_device *in4_dev;
 
 	QETH_CARD_TEXT(card, 4, "chkmcv4");
+
 	rcu_read_lock();
 	in4_dev = __in_dev_get_rcu(card->dev);
 	if (in4_dev == NULL)
 		goto unlock;
-	qeth_l3_add_mc(card, in4_dev);
+	qeth_l3_add_mc_to_hash(card, in4_dev);
 	qeth_l3_add_vlan_mc(card);
 unlock:
 	rcu_read_unlock();
 }
 
 #ifdef CONFIG_QETH_IPV6
-static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
+static void
+qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
 {
 	struct qeth_ipaddr *ipm;
 	struct ifmcaddr6 *im6;
+	struct qeth_ipaddr *tmp;
 	char buf[MAX_ADDR_LEN];
 
 	QETH_CARD_TEXT(card, 4, "addmc6");
+
+	tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+		if (!tmp)
+			return;
+
 	for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
 		ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
+
+		memcpy(tmp->mac, buf, sizeof(tmp->mac));
+		memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
+		       sizeof(struct in6_addr));
+		tmp->is_multicast = 1;
+
+		ipm = qeth_l3_ip_from_hash(card, tmp);
+		if (ipm) {
+			ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
+			continue;
+		}
+
 		ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
 		if (!ipm)
 			continue;
-		ipm->is_multicast = 1;
+
 		memcpy(ipm->mac, buf, OSA_ADDR_LEN);
 		memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
 		       sizeof(struct in6_addr));
-		if (!qeth_l3_add_ip(card, ipm))
-			kfree(ipm);
+		ipm->is_multicast = 1;
+		ipm->disp_flag = QETH_DISP_ADDR_ADD;
+		hash_add(card->ip_mc_htable,
+				&ipm->hnode, qeth_l3_ipaddr_hash(ipm));
+
 	}
+	kfree(tmp);
 }
 
 /* called with rcu_read_lock */
@@ -1603,6 +1518,7 @@ static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
 	u16 vid;
 
 	QETH_CARD_TEXT(card, 4, "admc6vl");
+
 	if (!qeth_is_supported(card, IPA_FULL_VLAN))
 		return;
 
@@ -1618,7 +1534,7 @@ static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
 		if (!in_dev)
 			continue;
 		read_lock_bh(&in_dev->lock);
-		qeth_l3_add_mc6(card, in_dev);
+		qeth_l3_add_mc6_to_hash(card, in_dev);
 		read_unlock_bh(&in_dev->lock);
 		in6_dev_put(in_dev);
 	}
@@ -1629,14 +1545,16 @@ static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
 	struct inet6_dev *in6_dev;
 
 	QETH_CARD_TEXT(card, 4, "chkmcv6");
+
 	if (!qeth_is_supported(card, IPA_IPV6))
 		return ;
 	in6_dev = in6_dev_get(card->dev);
-	if (in6_dev == NULL)
+	if (!in6_dev)
 		return;
+
 	rcu_read_lock();
 	read_lock_bh(&in6_dev->lock);
-	qeth_l3_add_mc6(card, in6_dev);
+	qeth_l3_add_mc6_to_hash(card, in6_dev);
 	qeth_l3_add_vlan_mc6(card);
 	read_unlock_bh(&in6_dev->lock);
 	rcu_read_unlock();
@@ -1660,16 +1578,23 @@ static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
 	in_dev = in_dev_get(netdev);
 	if (!in_dev)
 		return;
+
+	addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+	if (!addr)
+		return;
+
+	spin_lock_bh(&card->ip_lock);
+
 	for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
-		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
-		if (addr) {
-			addr->u.a4.addr = ifa->ifa_address;
-			addr->u.a4.mask = ifa->ifa_mask;
-			addr->type = QETH_IP_TYPE_NORMAL;
-			if (!qeth_l3_delete_ip(card, addr))
-				kfree(addr);
-		}
+		addr->u.a4.addr = ifa->ifa_address;
+		addr->u.a4.mask = ifa->ifa_mask;
+		addr->type = QETH_IP_TYPE_NORMAL;
+		qeth_l3_delete_ip(card, addr);
 	}
+
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(addr);
 	in_dev_put(in_dev);
 }
 
@@ -1687,20 +1612,28 @@ static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
 	netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
 	if (!netdev)
 		return;
+
 	in6_dev = in6_dev_get(netdev);
 	if (!in6_dev)
 		return;
+
+	addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+	if (!addr)
+		return;
+
+	spin_lock_bh(&card->ip_lock);
+
 	list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
-		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
-		if (addr) {
-			memcpy(&addr->u.a6.addr, &ifa->addr,
-			       sizeof(struct in6_addr));
-			addr->u.a6.pfxlen = ifa->prefix_len;
-			addr->type = QETH_IP_TYPE_NORMAL;
-			if (!qeth_l3_delete_ip(card, addr))
-				kfree(addr);
-		}
+		memcpy(&addr->u.a6.addr, &ifa->addr,
+		       sizeof(struct in6_addr));
+		addr->u.a6.pfxlen = ifa->prefix_len;
+		addr->type = QETH_IP_TYPE_NORMAL;
+		qeth_l3_delete_ip(card, addr);
 	}
+
+	spin_unlock_bh(&card->ip_lock);
+
+	kfree(addr);
 	in6_dev_put(in6_dev);
 #endif /* CONFIG_QETH_IPV6 */
 }
@@ -1727,18 +1660,16 @@ static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
 				    __be16 proto, u16 vid)
 {
 	struct qeth_card *card = dev->ml_priv;
-	unsigned long flags;
 
 	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
+
 	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 		QETH_CARD_TEXT(card, 3, "kidREC");
 		return 0;
 	}
-	spin_lock_irqsave(&card->vlanlock, flags);
 	/* unregister IP addresses of vlan device */
 	qeth_l3_free_vlan_addresses(card, vid);
 	clear_bit(vid, card->active_vlans);
-	spin_unlock_irqrestore(&card->vlanlock, flags);
 	qeth_l3_set_multicast_list(card->dev);
 	return 0;
 }
@@ -1994,8 +1925,8 @@ static int qeth_l3_verify_vlan_dev(struct net_device *dev,
 static int qeth_l3_verify_dev(struct net_device *dev)
 {
 	struct qeth_card *card;
-	unsigned long flags;
 	int rc = 0;
+	unsigned long flags;
 
 	read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 	list_for_each_entry(card, &qeth_core_card_list.list, list) {
@@ -2051,7 +1982,7 @@ static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
 		card->state = CARD_STATE_SOFTSETUP;
 	}
 	if (card->state == CARD_STATE_SOFTSETUP) {
-		qeth_l3_clear_ip_list(card, 1);
+		qeth_l3_clear_ip_htable(card, 1);
 		qeth_clear_ipacmd_list(card);
 		card->state = CARD_STATE_HARDSETUP;
 	}
@@ -2106,12 +2037,20 @@ static void qeth_l3_set_multicast_list(struct net_device *dev)
 	    (card->state != CARD_STATE_UP))
 		return;
 	if (!card->options.sniffer) {
-		qeth_l3_delete_mc_addresses(card);
+
+		spin_lock_bh(&card->mclock);
+
+		qeth_l3_mark_all_mc_to_be_deleted(card);
+
 		qeth_l3_add_multicast_ipv4(card);
 #ifdef CONFIG_QETH_IPV6
 		qeth_l3_add_multicast_ipv6(card);
 #endif
-		qeth_l3_set_ip_addr_list(card);
+		qeth_l3_delete_nonused_mc(card);
+		qeth_l3_add_all_new_mc(card);
+
+		spin_unlock_bh(&card->mclock);
+
 		if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 			return;
 	}
@@ -2375,22 +2314,21 @@ static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
 	if (rc) {
 		if (copy_to_user(udata, qinfo.udata, 4))
 			rc = -EFAULT;
-			goto free_and_out;
-	} else {
+		goto free_and_out;
+	}
 #ifdef CONFIG_QETH_IPV6
-		if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
-			/* fails in case of GuestLAN QDIO mode */
-			qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
-				&qinfo);
-		}
+	if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
+		/* fails in case of GuestLAN QDIO mode */
+		qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
+	}
 #endif
-		if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
-			QETH_CARD_TEXT(card, 4, "qactf");
-			rc = -EFAULT;
-			goto free_and_out;
-		}
-		QETH_CARD_TEXT(card, 4, "qacts");
+	if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
+		QETH_CARD_TEXT(card, 4, "qactf");
+		rc = -EFAULT;
+		goto free_and_out;
 	}
+	QETH_CARD_TEXT(card, 4, "qacts");
+
 free_and_out:
 	kfree(qinfo.udata);
 out:
@@ -2427,7 +2365,7 @@ static int qeth_l3_arp_add_entry(struct qeth_card *card,
 	rc = qeth_send_setassparms(card, iob,
 				   sizeof(struct qeth_arp_cache_entry),
 				   (unsigned long) entry,
-				   qeth_l3_default_setassparms_cb, NULL);
+				   qeth_setassparms_cb, NULL);
 	if (rc) {
 		tmp = rc;
 		qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
@@ -2467,7 +2405,7 @@ static int qeth_l3_arp_remove_entry(struct qeth_card *card,
 		return -ENOMEM;
 	rc = qeth_send_setassparms(card, iob,
 				   12, (unsigned long)buf,
-				   qeth_l3_default_setassparms_cb, NULL);
+				   qeth_setassparms_cb, NULL);
 	if (rc) {
 		tmp = rc;
 		memset(buf, 0, 16);
@@ -2793,15 +2731,34 @@ static void qeth_tso_fill_header(struct qeth_card *card,
 	}
 }
 
-static inline int qeth_l3_tso_elements(struct sk_buff *skb)
+/**
+ * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
+ * @card:			   qeth card structure, to check max. elems.
+ * @skb:			   SKB address
+ * @extra_elems:		   extra elems needed, to check against max.
+ *
+ * Returns the number of pages, and thus QDIO buffer elements, needed to cover
+ * skb data, including linear part and fragments, but excluding TCP header.
+ * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
+ * Checks if the result plus extra_elems fits under the limit for the card.
+ * Returns 0 if it does not.
+ * Note: extra_elems is not included in the returned result.
+ */
+static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
+			struct sk_buff *skb, int extra_elems)
 {
-	unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
-		tcp_hdr(skb)->doff * 4;
-	int tcpd_len = skb_headlen(skb) - (tcpd - (unsigned long)skb->data);
-	int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
-
-	elements += qeth_get_elements_for_frags(skb);
+	addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
+	int elements = qeth_get_elements_for_range(
+				tcpdptr,
+				(addr_t)skb->data + skb_headlen(skb)) +
+				qeth_get_elements_for_frags(skb);
 
+	if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
+		QETH_DBF_MESSAGE(2,
+	"Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
+				elements + extra_elems, skb->len);
+		return 0;
+	}
 	return elements;
 }
 
@@ -2810,8 +2767,8 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	int rc;
 	u16 *tag;
 	struct qeth_hdr *hdr = NULL;
-	int elements_needed = 0;
-	int elems;
+	int hdr_elements = 0;
+	int elements;
 	struct qeth_card *card = dev->ml_priv;
 	struct sk_buff *new_skb = NULL;
 	int ipv = qeth_get_ip_version(skb);
@@ -2822,7 +2779,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			qeth_get_priority_queue(card, skb, ipv, cast_type) :
 			card->qdio.default_out_queue];
 	int tx_bytes = skb->len;
-	bool large_send;
+	bool use_tso;
 	int data_offset = -1;
 	int nr_frags;
 
@@ -2847,10 +2804,12 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		card->perf_stats.outbound_start_time = qeth_get_micros();
 	}
 
-	large_send = skb_is_gso(skb);
+	/* Ignore segment size from skb_is_gso(), 1 page is always used. */
+	use_tso = skb_is_gso(skb) &&
+		  (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
 
-	if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
-	    (skb_shinfo(skb)->nr_frags == 0)) {
+	if ((card->info.type == QETH_CARD_TYPE_IQD) &&
+	    !skb_is_nonlinear(skb)) {
 		new_skb = skb;
 		if (new_skb->protocol == ETH_P_AF_IUCV)
 			data_offset = 0;
@@ -2859,7 +2818,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
 		if (!hdr)
 			goto tx_drop;
-		elements_needed++;
+		hdr_elements++;
 	} else {
 		/* create a clone with writeable headroom */
 		new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
@@ -2894,22 +2853,28 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	/* fix hardware limitation: as long as we do not have sbal
 	 * chaining we can not send long frag lists
 	 */
-	if (large_send) {
-		if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
-			if (skb_linearize(new_skb))
-				goto tx_drop;
-			if (card->options.performance_stats)
+	if ((card->info.type != QETH_CARD_TYPE_IQD) &&
+	    ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
+	     (!use_tso && !qeth_get_elements_no(card, new_skb, 0)))) {
+		int lin_rc = skb_linearize(new_skb);
+
+		if (card->options.performance_stats) {
+			if (lin_rc)
+				card->perf_stats.tx_linfail++;
+			else
 				card->perf_stats.tx_lin++;
 		}
+		if (lin_rc)
+			goto tx_drop;
 	}
 
-	if (large_send && (cast_type == RTN_UNSPEC)) {
+	if (use_tso) {
 		hdr = (struct qeth_hdr *)skb_push(new_skb,
 						sizeof(struct qeth_hdr_tso));
 		memset(hdr, 0, sizeof(struct qeth_hdr_tso));
 		qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
 		qeth_tso_fill_header(card, hdr, new_skb);
-		elements_needed++;
+		hdr_elements++;
 	} else {
 		if (data_offset < 0) {
 			hdr = (struct qeth_hdr *)skb_push(new_skb,
@@ -2930,31 +2895,31 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			qeth_l3_hdr_csum(card, hdr, new_skb);
 	}
 
-	elems = qeth_get_elements_no(card, new_skb, elements_needed);
-	if (!elems) {
+	elements = use_tso ?
+		   qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
+		   qeth_get_elements_no(card, new_skb, hdr_elements);
+	if (!elements) {
 		if (data_offset >= 0)
 			kmem_cache_free(qeth_core_header_cache, hdr);
 		goto tx_drop;
 	}
-	elements_needed += elems;
-	nr_frags = skb_shinfo(new_skb)->nr_frags;
+	elements += hdr_elements;
 
 	if (card->info.type != QETH_CARD_TYPE_IQD) {
 		int len;
-		if (large_send)
+		if (use_tso)
 			len = ((unsigned long)tcp_hdr(new_skb) +
-				tcp_hdr(new_skb)->doff * 4) -
+				tcp_hdrlen(new_skb)) -
 				(unsigned long)new_skb->data;
 		else
 			len = sizeof(struct qeth_hdr_layer3);
 
 		if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
 			goto tx_drop;
-		rc = qeth_do_send_packet(card, queue, new_skb, hdr,
-					 elements_needed);
+		rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
 	} else
 		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
-					elements_needed, data_offset, 0);
+					elements, data_offset, 0);
 
 	if (!rc) {
 		card->stats.tx_packets++;
@@ -2962,7 +2927,8 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (new_skb != skb)
 			dev_kfree_skb_any(skb);
 		if (card->options.performance_stats) {
-			if (large_send) {
+			nr_frags = skb_shinfo(new_skb)->nr_frags;
+			if (use_tso) {
 				card->perf_stats.large_send_bytes += tx_bytes;
 				card->perf_stats.large_send_cnt++;
 			}
@@ -3048,36 +3014,6 @@ static int qeth_l3_stop(struct net_device *dev)
 	return 0;
 }
 
-static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
-	netdev_features_t features)
-{
-	struct qeth_card *card = dev->ml_priv;
-
-	if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
-		features &= ~NETIF_F_IP_CSUM;
-	if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
-		features &= ~NETIF_F_TSO;
-	if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
-		features &= ~NETIF_F_RXCSUM;
-	return features;
-}
-
-static int qeth_l3_set_features(struct net_device *dev,
-	netdev_features_t features)
-{
-	struct qeth_card *card = dev->ml_priv;
-	netdev_features_t changed = dev->features ^ features;
-
-	if (!(changed & NETIF_F_RXCSUM))
-		return 0;
-
-	if (card->state == CARD_STATE_DOWN ||
-	    card->state == CARD_STATE_RECOVER)
-		return 0;
-
-	return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
-}
-
 static const struct ethtool_ops qeth_l3_ethtool_ops = {
 	.get_link = ethtool_op_get_link,
 	.get_strings = qeth_core_get_strings,
@@ -3120,8 +3056,8 @@ static const struct net_device_ops qeth_l3_netdev_ops = {
 	.ndo_set_rx_mode	= qeth_l3_set_multicast_list,
 	.ndo_do_ioctl		= qeth_l3_do_ioctl,
 	.ndo_change_mtu		= qeth_change_mtu,
-	.ndo_fix_features	= qeth_l3_fix_features,
-	.ndo_set_features	= qeth_l3_set_features,
+	.ndo_fix_features	= qeth_fix_features,
+	.ndo_set_features	= qeth_set_features,
 	.ndo_vlan_rx_add_vid	= qeth_l3_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
 	.ndo_tx_timeout		= qeth_tx_timeout,
@@ -3136,8 +3072,8 @@ static const struct net_device_ops qeth_l3_osa_netdev_ops = {
 	.ndo_set_rx_mode	= qeth_l3_set_multicast_list,
 	.ndo_do_ioctl		= qeth_l3_do_ioctl,
 	.ndo_change_mtu		= qeth_change_mtu,
-	.ndo_fix_features	= qeth_l3_fix_features,
-	.ndo_set_features	= qeth_l3_set_features,
+	.ndo_fix_features	= qeth_fix_features,
+	.ndo_set_features	= qeth_set_features,
 	.ndo_vlan_rx_add_vid	= qeth_l3_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
 	.ndo_tx_timeout		= qeth_tx_timeout,
@@ -3169,7 +3105,10 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 				card->dev->hw_features = NETIF_F_SG |
 					NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
 					NETIF_F_TSO;
-				card->dev->features = NETIF_F_RXCSUM;
+				card->dev->vlan_features = NETIF_F_SG |
+					NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
+					NETIF_F_TSO;
+				card->dev->features = NETIF_F_SG;
 			}
 		}
 	} else if (card->info.type == QETH_CARD_TYPE_IQD) {
@@ -3195,7 +3134,9 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 				NETIF_F_HW_VLAN_CTAG_RX |
 				NETIF_F_HW_VLAN_CTAG_FILTER;
 	netif_keep_dst(card->dev);
-	card->dev->gso_max_size = 15 * PAGE_SIZE;
+	card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
+				  PAGE_SIZE;
+	card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1);
 
 	SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 	netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
@@ -3230,7 +3171,7 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
 		card->dev = NULL;
 	}
 
-	qeth_l3_clear_ip_list(card, 0);
+	qeth_l3_clear_ip_htable(card, 0);
 	qeth_l3_clear_ipato_list(card);
 	return;
 }
@@ -3315,7 +3256,7 @@ contin:
 	card->state = CARD_STATE_SOFTSETUP;
 
 	qeth_set_allowed_threads(card, 0xffffffff, 0);
-	qeth_l3_set_ip_addr_list(card);
+	qeth_l3_recover_ip(card);
 	if (card->lan_online)
 		netif_carrier_on(card->dev);
 	else
@@ -3516,6 +3457,7 @@ EXPORT_SYMBOL_GPL(qeth_l3_discipline);
 static int qeth_l3_ip_event(struct notifier_block *this,
 			    unsigned long event, void *ptr)
 {
+
 	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
 	struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
 	struct qeth_ipaddr *addr;
@@ -3530,27 +3472,27 @@ static int qeth_l3_ip_event(struct notifier_block *this,
 	QETH_CARD_TEXT(card, 3, "ipevent");
 
 	addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
-	if (addr != NULL) {
+	if (addr) {
 		addr->u.a4.addr = ifa->ifa_address;
 		addr->u.a4.mask = ifa->ifa_mask;
 		addr->type = QETH_IP_TYPE_NORMAL;
 	} else
-		goto out;
+		return NOTIFY_DONE;
 
 	switch (event) {
 	case NETDEV_UP:
-		if (!qeth_l3_add_ip(card, addr))
-			kfree(addr);
+		spin_lock_bh(&card->ip_lock);
+		qeth_l3_add_ip(card, addr);
+		spin_unlock_bh(&card->ip_lock);
 		break;
 	case NETDEV_DOWN:
-		if (!qeth_l3_delete_ip(card, addr))
-			kfree(addr);
-		break;
-	default:
+		spin_lock_bh(&card->ip_lock);
+		qeth_l3_delete_ip(card, addr);
+		spin_unlock_bh(&card->ip_lock);
 		break;
 	}
-	qeth_l3_set_ip_addr_list(card);
-out:
+
+	kfree(addr);
 	return NOTIFY_DONE;
 }
 
@@ -3579,27 +3521,27 @@ static int qeth_l3_ip6_event(struct notifier_block *this,
 		return NOTIFY_DONE;
 
 	addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
-	if (addr != NULL) {
+	if (addr) {
 		memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
 		addr->u.a6.pfxlen = ifa->prefix_len;
 		addr->type = QETH_IP_TYPE_NORMAL;
 	} else
-		goto out;
+		return NOTIFY_DONE;
 
 	switch (event) {
 	case NETDEV_UP:
-		if (!qeth_l3_add_ip(card, addr))
-			kfree(addr);
+		spin_lock_bh(&card->ip_lock);
+		qeth_l3_add_ip(card, addr);
+		spin_unlock_bh(&card->ip_lock);
 		break;
 	case NETDEV_DOWN:
-		if (!qeth_l3_delete_ip(card, addr))
-			kfree(addr);
-		break;
-	default:
+		spin_lock_bh(&card->ip_lock);
+		qeth_l3_delete_ip(card, addr);
+		spin_unlock_bh(&card->ip_lock);
 		break;
 	}
-	qeth_l3_set_ip_addr_list(card);
-out:
+
+	kfree(addr);
 	return NOTIFY_DONE;
 }
 
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index 386eb7b89b1e..65645b11fc19 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -8,6 +8,7 @@
 
 #include <linux/slab.h>
 #include <asm/ebcdic.h>
+#include <linux/hashtable.h>
 #include "qeth_l3.h"
 
 #define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
@@ -285,19 +286,19 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
 	if (card->options.hsuid[0]) {
 		/* delete old ip address */
 		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
-		if (addr != NULL) {
-			addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
-			addr->u.a6.addr.s6_addr32[1] = 0x00000000;
-			for (i = 8; i < 16; i++)
-				addr->u.a6.addr.s6_addr[i] =
-					card->options.hsuid[i - 8];
-			addr->u.a6.pfxlen = 0;
-			addr->type = QETH_IP_TYPE_NORMAL;
-		} else
+		if (!addr)
 			return -ENOMEM;
-		if (!qeth_l3_delete_ip(card, addr))
-			kfree(addr);
-		qeth_l3_set_ip_addr_list(card);
+
+		addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
+		addr->u.a6.addr.s6_addr32[1] = 0x00000000;
+		for (i = 8; i < 16; i++)
+			addr->u.a6.addr.s6_addr[i] =
+				card->options.hsuid[i - 8];
+		addr->u.a6.pfxlen = 0;
+		addr->type = QETH_IP_TYPE_NORMAL;
+
+		qeth_l3_delete_ip(card, addr);
+		kfree(addr);
 	}
 
 	if (strlen(tmp) == 0) {
@@ -328,9 +329,8 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
 		addr->type = QETH_IP_TYPE_NORMAL;
 	} else
 		return -ENOMEM;
-	if (!qeth_l3_add_ip(card, addr))
-		kfree(addr);
-	qeth_l3_set_ip_addr_list(card);
+	qeth_l3_add_ip(card, addr);
+	kfree(addr);
 
 	return count;
 }
@@ -367,8 +367,8 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	struct qeth_card *card = dev_get_drvdata(dev);
-	struct qeth_ipaddr *tmpipa, *t;
-	int rc = 0;
+	struct qeth_ipaddr *addr;
+	int i, rc = 0;
 
 	if (!card)
 		return -EINVAL;
@@ -384,21 +384,20 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
 		card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
 	} else if (sysfs_streq(buf, "1")) {
 		card->ipato.enabled = 1;
-		list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
-			if ((tmpipa->type == QETH_IP_TYPE_NORMAL) &&
-				qeth_l3_is_addr_covered_by_ipato(card, tmpipa))
-				tmpipa->set_flags |=
+		hash_for_each(card->ip_htable, i, addr, hnode) {
+				if ((addr->type == QETH_IP_TYPE_NORMAL) &&
+				qeth_l3_is_addr_covered_by_ipato(card, addr))
+					addr->set_flags |=
 					QETH_IPA_SETIP_TAKEOVER_FLAG;
-		}
-
+			}
 	} else if (sysfs_streq(buf, "0")) {
 		card->ipato.enabled = 0;
-		list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
-			if (tmpipa->set_flags &
-				QETH_IPA_SETIP_TAKEOVER_FLAG)
-				tmpipa->set_flags &=
-					~QETH_IPA_SETIP_TAKEOVER_FLAG;
-		}
+		hash_for_each(card->ip_htable, i, addr, hnode) {
+			if (addr->set_flags &
+			QETH_IPA_SETIP_TAKEOVER_FLAG)
+				addr->set_flags &=
+				~QETH_IPA_SETIP_TAKEOVER_FLAG;
+			}
 	} else
 		rc = -EINVAL;
 out:
@@ -452,7 +451,6 @@ static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 			enum qeth_prot_versions proto)
 {
 	struct qeth_ipato_entry *ipatoe;
-	unsigned long flags;
 	char addr_str[40];
 	int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 	int i = 0;
@@ -460,7 +458,7 @@ static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 	entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 	/* add strlen for "/<mask>\n" */
 	entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
-	spin_lock_irqsave(&card->ip_lock, flags);
+	spin_lock_bh(&card->ip_lock);
 	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 		if (ipatoe->proto != proto)
 			continue;
@@ -473,7 +471,7 @@ static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 		i += snprintf(buf + i, PAGE_SIZE - i,
 			      "%s/%i\n", addr_str, ipatoe->mask_bits);
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+	spin_unlock_bh(&card->ip_lock);
 	i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 
 	return i;
@@ -689,15 +687,15 @@ static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
 			enum qeth_prot_versions proto)
 {
 	struct qeth_ipaddr *ipaddr;
+	struct hlist_node  *tmp;
 	char addr_str[40];
 	int entry_len; /* length of 1 entry string, differs between v4 and v6 */
-	unsigned long flags;
 	int i = 0;
 
 	entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 	entry_len += 2; /* \n + terminator */
-	spin_lock_irqsave(&card->ip_lock, flags);
-	list_for_each_entry(ipaddr, &card->ip_list, entry) {
+	spin_lock_bh(&card->ip_lock);
+	hash_for_each_safe(card->ip_htable, i, tmp, ipaddr, hnode) {
 		if (ipaddr->proto != proto)
 			continue;
 		if (ipaddr->type != QETH_IP_TYPE_VIPA)
@@ -711,7 +709,7 @@ static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
 			addr_str);
 		i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+	spin_unlock_bh(&card->ip_lock);
 	i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 
 	return i;
@@ -851,15 +849,15 @@ static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
 		       enum qeth_prot_versions proto)
 {
 	struct qeth_ipaddr *ipaddr;
+	struct hlist_node *tmp;
 	char addr_str[40];
 	int entry_len; /* length of 1 entry string, differs between v4 and v6 */
-	unsigned long flags;
 	int i = 0;
 
 	entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 	entry_len += 2; /* \n + terminator */
-	spin_lock_irqsave(&card->ip_lock, flags);
-	list_for_each_entry(ipaddr, &card->ip_list, entry) {
+	spin_lock_bh(&card->ip_lock);
+	hash_for_each_safe(card->ip_htable, i, tmp, ipaddr, hnode) {
 		if (ipaddr->proto != proto)
 			continue;
 		if (ipaddr->type != QETH_IP_TYPE_RXIP)
@@ -873,7 +871,7 @@ static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
 			addr_str);
 		i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 	}
-	spin_unlock_irqrestore(&card->ip_lock, flags);
+	spin_unlock_bh(&card->ip_lock);
 	i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 
 	return i;