Merge branch 's390-qeth-cleanups'

Julian Wiedmann says:

====================
s390/qeth: updates 2019-04-25

please apply one more patch series for qeth to net-next. Nothing special,
just a bunch of cleanups.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core.h

@@ -165,6 +165,12 @@ struct qeth_vnicc_info {
 	bool rx_bcast_enabled;
 };
 
+static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa,
+		enum qeth_ipa_setadp_cmd func)
+{
+	return (ipa->supported_funcs & func);
+}
+
 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 		enum qeth_ipa_funcs func)
 {
@@ -178,9 +184,7 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 }
 
 #define qeth_adp_supported(c, f) \
-	qeth_is_ipa_supported(&c->options.adp, f)
-#define qeth_adp_enabled(c, f) \
-	qeth_is_ipa_enabled(&c->options.adp, f)
+	qeth_is_adp_supported(&c->options.adp, f)
 #define qeth_is_supported(c, f) \
 	qeth_is_ipa_supported(&c->options.ipa4, f)
 #define qeth_is_enabled(c, f) \
@@ -370,34 +374,6 @@ enum qeth_header_ids {
 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 #define QETH_HDR_EXT_UDP	      0x40 /*bit off for TCP*/
 
-enum qeth_qdio_buffer_states {
-	/*
-	 * inbound: read out by driver; owned by hardware in order to be filled
-	 * outbound: owned by driver in order to be filled
-	 */
-	QETH_QDIO_BUF_EMPTY,
-	/*
-	 * inbound: filled by hardware; owned by driver in order to be read out
-	 * outbound: filled by driver; owned by hardware in order to be sent
-	 */
-	QETH_QDIO_BUF_PRIMED,
-	/*
-	 * inbound: not applicable
-	 * outbound: identified to be pending in TPQ
-	 */
-	QETH_QDIO_BUF_PENDING,
-	/*
-	 * inbound: not applicable
-	 * outbound: found in completion queue
-	 */
-	QETH_QDIO_BUF_IN_CQ,
-	/*
-	 * inbound: not applicable
-	 * outbound: handled via transfer pending / completion queue
-	 */
-	QETH_QDIO_BUF_HANDLED_DELAYED,
-};
-
 enum qeth_qdio_info_states {
 	QETH_QDIO_UNINITIALIZED,
 	QETH_QDIO_ALLOCATED,
@@ -429,6 +405,19 @@ struct qeth_qdio_q {
 	int next_buf_to_init;
 };
 
+enum qeth_qdio_out_buffer_state {
+	/* Owned by driver, in order to be filled. */
+	QETH_QDIO_BUF_EMPTY,
+	/* Filled by driver; owned by hardware in order to be sent. */
+	QETH_QDIO_BUF_PRIMED,
+	/* Identified to be pending in TPQ. */
+	QETH_QDIO_BUF_PENDING,
+	/* Found in completion queue. */
+	QETH_QDIO_BUF_IN_CQ,
+	/* Handled via transfer pending / completion queue. */
+	QETH_QDIO_BUF_HANDLED_DELAYED,
+};
+
 struct qeth_qdio_out_buffer {
 	struct qdio_buffer *buffer;
 	atomic_t state;
@@ -495,14 +484,12 @@ struct qeth_qdio_out_q {
 	struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 	struct qdio_outbuf_state *bufstates; /* convenience pointer */
 	struct qeth_out_q_stats stats;
-	int queue_no;
+	u8 next_buf_to_fill;
+	u8 max_elements;
+	u8 queue_no;
+	u8 do_pack;
 	struct qeth_card *card;
 	atomic_t state;
-	int do_pack;
-	/*
-	 * index of buffer to be filled by driver; state EMPTY or PACKING
-	 */
-	int next_buf_to_fill;
 	/*
 	 * number of buffers that are currently filled (PRIMED)
 	 * -> these buffers are hardware-owned
@@ -648,7 +635,6 @@ struct qeth_seqno {
 	__u32 pdu_hdr;
 	__u32 pdu_hdr_ack;
 	__u16 ipa;
-	__u32 pkt_seqno;
 };
 
 struct qeth_reply {
@@ -679,7 +665,7 @@ struct qeth_card_info {
 	__u16 func_level;
 	char mcl_level[QETH_MCL_LENGTH + 1];
 	u8 open_when_online:1;
-	int guestlan;
+	u8 is_vm_nic:1;
 	int mac_bits;
 	enum qeth_card_types type;
 	enum qeth_link_types link_type;
@@ -895,6 +881,16 @@ static inline int qeth_get_ip_version(struct sk_buff *skb)
 	}
 }
 
+static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
+{
+	u8 *addr = eth_hdr(skb)->h_dest;
+
+	if (is_multicast_ether_addr(addr))
+		return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
+						       RTN_MULTICAST;
+	return RTN_UNICAST;
+}
+
 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
 				u8 flags)
 {

drivers/s390/net/qeth_core_mpc.h

@@ -82,7 +82,7 @@ enum qeth_card_types {
 #define IS_OSM(card)	((card)->info.type == QETH_CARD_TYPE_OSM)
 #define IS_OSN(card)	((card)->info.type == QETH_CARD_TYPE_OSN)
 #define IS_OSX(card)	((card)->info.type == QETH_CARD_TYPE_OSX)
-#define IS_VM_NIC(card)	((card)->info.guestlan)
+#define IS_VM_NIC(card)	((card)->info.is_vm_nic)
 
 #define QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE 0x18
 /* only the first two bytes are looked at in qeth_get_cardname_short */

drivers/s390/net/qeth_core_sys.c

@@ -479,8 +479,7 @@ static ssize_t qeth_dev_isolation_store(struct device *dev,
 		return -EINVAL;
 
 	mutex_lock(&card->conf_mutex);
-	if (card->info.type != QETH_CARD_TYPE_OSD &&
-	    card->info.type != QETH_CARD_TYPE_OSX) {
+	if (!IS_OSD(card) && !IS_OSX(card)) {
 		rc = -EOPNOTSUPP;
 		dev_err(&card->gdev->dev, "Adapter does not "
 			"support QDIO data connection isolation\n");

drivers/s390/net/qeth_l2_main.c

@@ -161,15 +161,6 @@ static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card)
 	}
 }
 
-static int qeth_l2_get_cast_type(struct sk_buff *skb)
-{
-	if (is_broadcast_ether_addr(skb->data))
-		return RTN_BROADCAST;
-	if (is_multicast_ether_addr(skb->data))
-		return RTN_MULTICAST;
-	return RTN_UNICAST;
-}
-
 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue,
 				struct qeth_hdr *hdr, struct sk_buff *skb,
 				int ipv, int cast_type, unsigned int data_len)
@@ -332,13 +323,11 @@ static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 		case QETH_HEADER_TYPE_LAYER2:
 			skb->protocol = eth_type_trans(skb, skb->dev);
 			qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]);
-			if (skb->protocol == htons(ETH_P_802_2))
-				*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 			len = skb->len;
 			napi_gro_receive(&card->napi, skb);
 			break;
 		case QETH_HEADER_TYPE_OSN:
-			if (card->info.type == QETH_CARD_TYPE_OSN) {
+			if (IS_OSN(card)) {
 				skb_push(skb, sizeof(struct qeth_hdr));
 				skb_copy_to_linear_data(skb, hdr,
 						sizeof(struct qeth_hdr));
@@ -389,8 +378,7 @@ static int qeth_l2_request_initial_mac(struct qeth_card *card)
 	}
 
 	/* some devices don't support a custom MAC address: */
-	if (card->info.type == QETH_CARD_TYPE_OSM ||
-	    card->info.type == QETH_CARD_TYPE_OSX)
+	if (IS_OSM(card) || IS_OSX(card))
 		return (rc) ? rc : -EADDRNOTAVAIL;
 	eth_hw_addr_random(card->dev);
 
@@ -584,7 +572,7 @@ static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
 	}
 
 	elements += qeth_count_elements(skb, hd_len);
-	if (elements > QETH_MAX_BUFFER_ELEMENTS(card)) {
+	if (elements > queue->max_elements) {
 		rc = -E2BIG;
 		goto out;
 	}
@@ -614,7 +602,8 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
 		rc = qeth_l2_xmit_osn(card, skb, queue);
 	else
 		rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb),
-			       qeth_l2_get_cast_type(skb), qeth_l2_fill_header);
+			       qeth_get_ether_cast_type(skb),
+			       qeth_l2_fill_header);
 
 	if (!rc) {
 		QETH_TXQ_STAT_INC(queue, tx_packets);
@@ -634,7 +623,7 @@ static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb,
 
 	if (IS_IQD(card))
 		return qeth_iqd_select_queue(dev, skb,
-					     qeth_l2_get_cast_type(skb),
+					     qeth_get_ether_cast_type(skb),
 					     sb_dev);
 	return qeth_get_priority_queue(card, skb);
 }
@@ -735,7 +724,7 @@ static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok)
 		card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 	}
 
-	if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
+	if (IS_OSD(card) && !IS_VM_NIC(card)) {
 		card->dev->features |= NETIF_F_SG;
 		/* OSA 3S and earlier has no RX/TX support */
 		if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
@@ -845,8 +834,7 @@ static int qeth_l2_set_online(struct ccwgroup_device *gdev)
 	/* softsetup */
 	QETH_DBF_TEXT(SETUP, 2, "softsetp");
 
-	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
-	    (card->info.type == QETH_CARD_TYPE_OSX)) {
+	if (IS_OSD(card) || IS_OSX(card)) {
 		rc = qeth_l2_start_ipassists(card);
 		if (rc)
 			goto out_remove;
@@ -1470,8 +1458,7 @@ static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
 						  enum qeth_ipa_sbp_cmd sbp_cmd,
 						  unsigned int cmd_length)
 {
-	enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
-					IPA_CMD_SETBRIDGEPORT_IQD :
+	enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
 						    IPA_CMD_SETBRIDGEPORT_OSA;
 	struct qeth_cmd_buffer *iob;
 	struct qeth_ipa_cmd *cmd;

drivers/s390/net/qeth_l3_main.c

@@ -474,7 +474,7 @@ static int qeth_l3_send_setrouting(struct qeth_card *card,
 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 		enum qeth_routing_types *type, enum qeth_prot_versions prot)
 {
-	if (card->info.type == QETH_CARD_TYPE_IQD) {
+	if (IS_IQD(card)) {
 		switch (*type) {
 		case NO_ROUTER:
 		case PRIMARY_CONNECTOR:
@@ -854,7 +854,7 @@ static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
 
 	QETH_CARD_TEXT(card, 3, "softipv6");
 
-	if (card->info.type == QETH_CARD_TYPE_IQD)
+	if (IS_IQD(card))
 		goto out;
 
 	rc = qeth_send_simple_setassparms(card, IPA_IPV6,
@@ -1380,8 +1380,7 @@ static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
 		switch (hdr->hdr.l3.id) {
 		case QETH_HEADER_TYPE_LAYER3:
 			magic = *(__u16 *)skb->data;
-			if ((card->info.type == QETH_CARD_TYPE_IQD) &&
-			    (magic == ETH_P_AF_IUCV)) {
+			if (IS_IQD(card) && magic == ETH_P_AF_IUCV) {
 				len = skb->len;
 				dev_hard_header(skb, dev, ETH_P_AF_IUCV,
 						dev->dev_addr, "FAKELL", len);
@@ -1460,7 +1459,7 @@ qeth_l3_handle_promisc_mode(struct qeth_card *card)
 	     (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
 		return;
 
-	if (card->info.guestlan) {		/* Guestlan trace */
+	if (IS_VM_NIC(card)) {		/* Guestlan trace */
 		if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 			qeth_setadp_promisc_mode(card);
 	} else if (card->options.sniffer &&	/* HiperSockets trace */
@@ -1557,7 +1556,7 @@ static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
 	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
 	 * thus we say EOPNOTSUPP for this ARP function
 	 */
-	if (card->info.guestlan)
+	if (IS_VM_NIC(card))
 		return -EOPNOTSUPP;
 	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 		return -EOPNOTSUPP;
@@ -1789,7 +1788,7 @@ static int qeth_l3_arp_modify_entry(struct qeth_card *card,
 	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
 	 * thus we say EOPNOTSUPP for this ARP function
 	 */
-	if (card->info.guestlan)
+	if (IS_VM_NIC(card))
 		return -EOPNOTSUPP;
 	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 		return -EOPNOTSUPP;
@@ -1822,7 +1821,7 @@ static int qeth_l3_arp_flush_cache(struct qeth_card *card)
 	 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
 	 * thus we say EOPNOTSUPP for this ARP function
 	*/
-	if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
+	if (IS_VM_NIC(card) || IS_IQD(card))
 		return -EOPNOTSUPP;
 	if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 		return -EOPNOTSUPP;
@@ -1919,13 +1918,7 @@ static int qeth_l3_get_cast_type(struct sk_buff *skb)
 				RTN_MULTICAST : RTN_UNICAST;
 	default:
 		/* ... and MAC address */
-		if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
-					    skb->dev->broadcast))
-			return RTN_BROADCAST;
-		if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
-			return RTN_MULTICAST;
-		/* default to unicast */
-		return RTN_UNICAST;
+		return qeth_get_ether_cast_type(skb);
 	}
 }
 
@@ -1983,19 +1976,14 @@ static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
 		hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
 	}
 
+	l3_hdr->flags = qeth_l3_cast_type_to_flag(cast_type);
+
 	/* OSA only: */
 	if (!ipv) {
-		hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
-		if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
-					    skb->dev->broadcast))
-			hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
-		else
-			hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
-				QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
+		l3_hdr->flags |= QETH_HDR_PASSTHRU;
 		return;
 	}
 
-	hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
 	rcu_read_lock();
 	if (ipv == 4) {
 		struct rtable *rt = skb_rtable(skb);
@@ -2013,7 +2001,7 @@ static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
 			l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
 
 		hdr->hdr.l3.flags |= QETH_HDR_IPV6;
-		if (card->info.type != QETH_CARD_TYPE_IQD)
+		if (!IS_IQD(card))
 			hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
 	}
 	rcu_read_unlock();
@@ -2195,8 +2183,7 @@ static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
 	unsigned int headroom;
 	int rc;
 
-	if (card->info.type == QETH_CARD_TYPE_OSD ||
-	    card->info.type == QETH_CARD_TYPE_OSX) {
+	if (IS_OSD(card) || IS_OSX(card)) {
 		if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
 		    (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
 			pr_info("qeth_l3: ignoring TR device\n");
@@ -2210,7 +2197,7 @@ static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
 		if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
 			card->dev->dev_id = card->info.unique_id & 0xffff;
 
-		if (!card->info.guestlan) {
+		if (!IS_VM_NIC(card)) {
 			card->dev->features |= NETIF_F_SG;
 			card->dev->hw_features |= NETIF_F_TSO |
 				NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
@@ -2234,7 +2221,7 @@ static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
 			headroom = sizeof(struct qeth_hdr_tso);
 		else
 			headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
-	} else if (card->info.type == QETH_CARD_TYPE_IQD) {
+	} else if (IS_IQD(card)) {
 		card->dev->flags |= IFF_NOARP;
 		card->dev->netdev_ops = &qeth_l3_netdev_ops;
 		headroom = sizeof(struct qeth_hdr) - ETH_HLEN;

drivers/s390/net/qeth_l3_sys.c

@@ -206,7 +206,7 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
 	if (!card)
 		return -EINVAL;
 
-	if (card->info.type != QETH_CARD_TYPE_IQD)
+	if (!IS_IQD(card))
 		return -EPERM;
 	if (card->options.cq == QETH_CQ_ENABLED)
 		return -EPERM;
@@ -258,7 +258,7 @@ static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
 	if (!card)
 		return -EINVAL;
 
-	if (card->info.type != QETH_CARD_TYPE_IQD)
+	if (!IS_IQD(card))
 		return -EPERM;
 
 	memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
@@ -276,7 +276,7 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
 	if (!card)
 		return -EINVAL;
 
-	if (card->info.type != QETH_CARD_TYPE_IQD)
+	if (!IS_IQD(card))
 		return -EPERM;
 	if (card->state != CARD_STATE_DOWN)
 		return -EPERM;