Merge branch 's390-next-updates'

Julian Wiedmann says:

====================
s390/net updates

please apply the following qeth updates for net-next.

Aside from some janitorial changes, this adds early setup for virtualized
HiperSockets devices - building upon the code that landed via -net earlier.
====================

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

drivers/s390/net/qeth_core.h

@@ -659,6 +659,7 @@ struct qeth_card_info {
 	int max_mtu;
 	int broadcast_capable;
 	int unique_id;
+	bool layer_enforced;
 	struct qeth_card_blkt blkt;
 	enum qeth_ipa_promisc_modes promisc_mode;
 	__u32 diagass_support;
@@ -696,6 +697,7 @@ struct qeth_osn_info {
 };
 
 enum qeth_discipline_id {
+	QETH_DISCIPLINE_UNDETERMINED = -1,
 	QETH_DISCIPLINE_LAYER3 = 0,
 	QETH_DISCIPLINE_LAYER2 = 1,
 };

drivers/s390/net/qeth_core_main.c

@@ -1723,6 +1723,25 @@ static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
 			       (prcd[0x11] == _ascebc['M']));
 }
 
+/* Determine whether the device requires a specific layer discipline */
+static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
+{
+	if (card->info.type == QETH_CARD_TYPE_OSM ||
+	    card->info.type == QETH_CARD_TYPE_OSN) {
+		QETH_DBF_TEXT(SETUP, 3, "force l2");
+		return QETH_DISCIPLINE_LAYER2;
+	}
+
+	/* virtual HiperSocket is L3 only: */
+	if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) {
+		QETH_DBF_TEXT(SETUP, 3, "force l3");
+		return QETH_DISCIPLINE_LAYER3;
+	}
+
+	QETH_DBF_TEXT(SETUP, 3, "force no");
+	return QETH_DISCIPLINE_UNDETERMINED;
+}
+
 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
 {
 	QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
@@ -3347,6 +3366,28 @@ static void qeth_handle_send_error(struct qeth_card *card,
 		       (u16)qdio_err, (u8)sbalf15);
 }
 
+/**
+ * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
+ * @queue: queue to check for packing buffer
+ *
+ * Returns number of buffers that were prepared for flush.
+ */
+static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
+{
+	struct qeth_qdio_out_buffer *buffer;
+
+	buffer = queue->bufs[queue->next_buf_to_fill];
+	if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
+	    (buffer->next_element_to_fill > 0)) {
+		/* it's a packing buffer */
+		atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
+		queue->next_buf_to_fill =
+			(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
+		return 1;
+	}
+	return 0;
+}
+
 /*
  * Switched to packing state if the number of used buffers on a queue
  * reaches a certain limit.
@@ -3373,9 +3414,6 @@ static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
  */
 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
 {
-	struct qeth_qdio_out_buffer *buffer;
-	int flush_count = 0;
-
 	if (queue->do_pack) {
 		if (atomic_read(&queue->used_buffers)
 		    <= QETH_LOW_WATERMARK_PACK) {
@@ -3384,42 +3422,9 @@ static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
 			if (queue->card->options.performance_stats)
 				queue->card->perf_stats.sc_p_dp++;
 			queue->do_pack = 0;
-			/* flush packing buffers */
-			buffer = queue->bufs[queue->next_buf_to_fill];
-			if ((atomic_read(&buffer->state) ==
-						QETH_QDIO_BUF_EMPTY) &&
-			    (buffer->next_element_to_fill > 0)) {
-				atomic_set(&buffer->state,
-					   QETH_QDIO_BUF_PRIMED);
-				flush_count++;
-				queue->next_buf_to_fill =
-					(queue->next_buf_to_fill + 1) %
-					QDIO_MAX_BUFFERS_PER_Q;
-			}
+			return qeth_prep_flush_pack_buffer(queue);
 		}
 	}
-	return flush_count;
-}
-
-
-/*
- * Called to flush a packing buffer if no more pci flags are on the queue.
- * Checks if there is a packing buffer and prepares it to be flushed.
- * In that case returns 1, otherwise zero.
- */
-static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
-{
-	struct qeth_qdio_out_buffer *buffer;
-
-	buffer = queue->bufs[queue->next_buf_to_fill];
-	if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
-	   (buffer->next_element_to_fill > 0)) {
-		/* it's a packing buffer */
-		atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
-		queue->next_buf_to_fill =
-			(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
-		return 1;
-	}
 	return 0;
 }
 
@@ -3532,8 +3537,7 @@ static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
 			flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
 			if (!flush_cnt &&
 			    !atomic_read(&queue->set_pci_flags_count))
-				flush_cnt +=
-					qeth_flush_buffers_on_no_pci(queue);
+				flush_cnt += qeth_prep_flush_pack_buffer(queue);
 			if (queue->card->options.performance_stats &&
 			    q_was_packing)
 				queue->card->perf_stats.bufs_sent_pack +=
@@ -4127,7 +4131,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
 		 * flag out on the queue
 		 */
 		if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
-			flush_count += qeth_flush_buffers_on_no_pci(queue);
+			flush_count += qeth_prep_flush_pack_buffer(queue);
 		if (flush_count)
 			qeth_flush_buffers(queue, start_index, flush_count);
 	}
@@ -4199,8 +4203,7 @@ int qeth_change_mtu(struct net_device *dev, int new_mtu)
 	sprintf(dbf_text, "%8x", new_mtu);
 	QETH_CARD_TEXT(card, 4, dbf_text);
 
-	if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
-	    (!qeth_mtu_is_valid(card, new_mtu)))
+	if (!qeth_mtu_is_valid(card, new_mtu))
 		return -EINVAL;
 	dev->mtu = new_mtu;
 	return 0;
@@ -5501,6 +5504,7 @@ int qeth_core_load_discipline(struct qeth_card *card,
 		enum qeth_discipline_id discipline)
 {
 	int rc = 0;
+
 	mutex_lock(&qeth_mod_mutex);
 	switch (discipline) {
 	case QETH_DISCIPLINE_LAYER3:
@@ -5511,7 +5515,10 @@ int qeth_core_load_discipline(struct qeth_card *card,
 		card->discipline = try_then_request_module(
 			symbol_get(qeth_l2_discipline), "qeth_l2");
 		break;
+	default:
+		break;
 	}
+
 	if (!card->discipline) {
 		dev_err(&card->gdev->dev, "There is no kernel module to "
 			"support discipline %d\n", discipline);
@@ -5614,6 +5621,7 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
 	struct qeth_card *card;
 	struct device *dev;
 	int rc;
+	enum qeth_discipline_id enforced_disc;
 	unsigned long flags;
 	char dbf_name[DBF_NAME_LEN];
 
@@ -5661,10 +5669,15 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
 		goto err_card;
 	}
 
-	switch (card->info.type) {
-	case QETH_CARD_TYPE_OSN:
-	case QETH_CARD_TYPE_OSM:
-		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
+	qeth_determine_capabilities(card);
+	enforced_disc = qeth_enforce_discipline(card);
+	switch (enforced_disc) {
+	case QETH_DISCIPLINE_UNDETERMINED:
+		gdev->dev.type = &qeth_generic_devtype;
+		break;
+	default:
+		card->info.layer_enforced = true;
+		rc = qeth_core_load_discipline(card, enforced_disc);
 		if (rc)
 			goto err_card;
 
@@ -5675,16 +5688,11 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
 		if (rc)
 			goto err_disc;
 		break;
-	default:
-		gdev->dev.type = &qeth_generic_devtype;
-		break;
 	}
 
 	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 	list_add_tail(&card->list, &qeth_core_card_list.list);
 	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
-
-	qeth_determine_capabilities(card);
 	return 0;
 
 err_disc:
@@ -5721,7 +5729,7 @@ static int qeth_core_set_online(struct ccwgroup_device *gdev)
 {
 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 	int rc = 0;
-	int def_discipline;
+	enum qeth_discipline_id def_discipline;
 
 	if (!card->discipline) {
 		if (card->info.type == QETH_CARD_TYPE_IQD)
@@ -6406,11 +6414,8 @@ netdev_features_t qeth_fix_features(struct net_device *dev,
 		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)) {
+	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)

drivers/s390/net/qeth_core_mpc.c

@@ -167,6 +167,8 @@ static struct ipa_rc_msg qeth_ipa_rc_msg[] = {
 	{IPA_RC_IP_TABLE_FULL,		"Add Addr IP Table Full - ipv6"},
 	{IPA_RC_UNKNOWN_ERROR,		"IPA command failed - reason unknown"},
 	{IPA_RC_UNSUPPORTED_COMMAND,	"Command not supported"},
+	{IPA_RC_TRACE_ALREADY_ACTIVE,	"trace already active"},
+	{IPA_RC_INVALID_FORMAT,		"invalid format or length"},
 	{IPA_RC_DUP_IPV6_REMOTE, "ipv6 address already registered remote"},
 	{IPA_RC_DUP_IPV6_HOME,		"ipv6 address already registered"},
 	{IPA_RC_UNREGISTERED_ADDR,	"Address not registered"},

drivers/s390/net/qeth_core_mpc.h

@@ -192,7 +192,7 @@ enum qeth_ipa_funcs {
 	IPA_ARP_PROCESSING      = 0x00000001L,
 	IPA_INBOUND_CHECKSUM    = 0x00000002L,
 	IPA_OUTBOUND_CHECKSUM   = 0x00000004L,
-	IPA_IP_FRAGMENTATION    = 0x00000008L,
+	/* RESERVED		= 0x00000008L,*/
 	IPA_FILTERING           = 0x00000010L,
 	IPA_IPV6                = 0x00000020L,
 	IPA_MULTICASTING        = 0x00000040L,

drivers/s390/net/qeth_core_sys.c

@@ -413,7 +413,7 @@ static ssize_t qeth_dev_layer2_store(struct device *dev,
 
 	if (card->options.layer2 == newdis)
 		goto out;
-	if (card->info.type == QETH_CARD_TYPE_OSM) {
+	if (card->info.layer_enforced) {
 		/* fixed layer, can't switch */
 		rc = -EOPNOTSUPP;
 		goto out;

drivers/s390/net/qeth_l2_main.c

@@ -1017,6 +1017,13 @@ static int qeth_l2_start_ipassists(struct qeth_card *card)
 	return 0;
 }
 
+static void qeth_l2_trace_features(struct qeth_card *card)
+{
+	QETH_CARD_TEXT(card, 2, "l2featur");
+	QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
+		      sizeof(card->options.sbp.supported_funcs));
+}
+
 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 {
 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
@@ -1040,6 +1047,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 		dev_info(&card->gdev->dev,
 		"The device represents a Bridge Capable Port\n");
 	qeth_trace_features(card);
+	qeth_l2_trace_features(card);
 
 	if (!card->dev && qeth_l2_setup_netdev(card)) {
 		rc = -ENODEV;

drivers/s390/net/qeth_l3.h

@@ -65,6 +65,7 @@ struct qeth_ipato_entry {
 	int mask_bits;
 };
 
+extern const struct attribute_group *qeth_l3_attr_groups[];
 
 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions, const __u8 *, char *);
 int qeth_l3_string_to_ipaddr(const char *, enum qeth_prot_versions, __u8 *);