1 files changed, 251 insertions, 131 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 0149c949534..e45bf09af0c 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -13,16 +13,19 @@
 
 #include "qlcnic.h"
 
-#define TX_ETHER_PKT	0x01
-#define TX_TCP_PKT	0x02
-#define TX_UDP_PKT	0x03
-#define TX_IP_PKT	0x04
-#define TX_TCP_LSO	0x05
-#define TX_TCP_LSO6	0x06
-#define TX_TCPV6_PKT	0x0b
-#define TX_UDPV6_PKT	0x0c
-#define FLAGS_VLAN_TAGGED	0x10
-#define FLAGS_VLAN_OOB		0x40
+#define QLCNIC_TX_ETHER_PKT		0x01
+#define QLCNIC_TX_TCP_PKT		0x02
+#define QLCNIC_TX_UDP_PKT		0x03
+#define QLCNIC_TX_IP_PKT		0x04
+#define QLCNIC_TX_TCP_LSO		0x05
+#define QLCNIC_TX_TCP_LSO6		0x06
+#define QLCNIC_TX_ENCAP_PKT		0x07
+#define QLCNIC_TX_ENCAP_LSO		0x08
+#define QLCNIC_TX_TCPV6_PKT		0x0b
+#define QLCNIC_TX_UDPV6_PKT		0x0c
+
+#define QLCNIC_FLAGS_VLAN_TAGGED	0x10
+#define QLCNIC_FLAGS_VLAN_OOB		0x40
 
 #define qlcnic_set_tx_vlan_tci(cmd_desc, v)	\
 	(cmd_desc)->vlan_TCI = cpu_to_le16(v);
@@ -124,41 +127,16 @@
 #define qlcnic_83xx_is_ip_align(sts)	(((sts) >> 46) & 1)
 #define qlcnic_83xx_has_vlan_tag(sts)	(((sts) >> 47) & 1)
 
-struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *,
-				     struct qlcnic_host_rds_ring *, u16, u16);
+static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
+				   int max);
 
-inline void qlcnic_enable_tx_intr(struct qlcnic_adapter *adapter,
-				  struct qlcnic_host_tx_ring *tx_ring)
-{
-	if (qlcnic_check_multi_tx(adapter) &&
-	    !adapter->ahw->diag_test)
-		writel(0x0, tx_ring->crb_intr_mask);
-}
-
-
-static inline void qlcnic_disable_tx_int(struct qlcnic_adapter *adapter,
-					 struct qlcnic_host_tx_ring *tx_ring)
-{
-	if (qlcnic_check_multi_tx(adapter) &&
-	    !adapter->ahw->diag_test)
-		writel(1, tx_ring->crb_intr_mask);
-}
-
-inline void qlcnic_83xx_enable_tx_intr(struct qlcnic_adapter *adapter,
-				       struct qlcnic_host_tx_ring *tx_ring)
-{
-	writel(0, tx_ring->crb_intr_mask);
-}
-
-inline void qlcnic_83xx_disable_tx_intr(struct qlcnic_adapter *adapter,
-					struct qlcnic_host_tx_ring *tx_ring)
-{
-	writel(1, tx_ring->crb_intr_mask);
-}
+static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *,
+					    struct qlcnic_host_rds_ring *,
+					    u16, u16);
 
-static inline u8 qlcnic_mac_hash(u64 mac)
+static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan)
 {
-	return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff));
+	return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff));
 }
 
 static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter,
@@ -202,7 +180,7 @@ static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head,
 	struct hlist_node *n;
 
 	hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
-		if (!memcmp(tmp_fil->faddr, addr, ETH_ALEN) &&
+		if (ether_addr_equal(tmp_fil->faddr, addr) &&
 		    tmp_fil->vlan_id == vlan_id)
 			return tmp_fil;
 	}
@@ -210,8 +188,8 @@ static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head,
 	return NULL;
 }
 
-void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, struct sk_buff *skb,
-			  int loopback_pkt, u16 vlan_id)
+static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter,
+				 struct sk_buff *skb, int loopback_pkt, u16 vlan_id)
 {
 	struct ethhdr *phdr = (struct ethhdr *)(skb->data);
 	struct qlcnic_filter *fil, *tmp_fil;
@@ -221,8 +199,11 @@ void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, struct sk_buff *skb,
 	u8 hindex, op;
 	int ret;
 
+	if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff))
+		vlan_id = 0;
+
 	memcpy(&src_addr, phdr->h_source, ETH_ALEN);
-	hindex = qlcnic_mac_hash(src_addr) &
+	hindex = qlcnic_mac_hash(src_addr, vlan_id) &
 		 (adapter->fhash.fbucket_size - 1);
 
 	if (loopback_pkt) {
@@ -322,31 +303,35 @@ static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
 			       struct cmd_desc_type0 *first_desc,
 			       struct sk_buff *skb)
 {
+	struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data);
+	struct ethhdr *phdr = (struct ethhdr *)(skb->data);
+	u16 protocol = ntohs(skb->protocol);
 	struct qlcnic_filter *fil, *tmp_fil;
-	struct hlist_node *n;
 	struct hlist_head *head;
-	struct net_device *netdev = adapter->netdev;
-	struct ethhdr *phdr = (struct ethhdr *)(skb->data);
+	struct hlist_node *n;
 	u64 src_addr = 0;
 	u16 vlan_id = 0;
-	u8 hindex;
+	u8 hindex, hval;
 
 	if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
 		return;
 
-	if (adapter->fhash.fnum >= adapter->fhash.fmax) {
-		adapter->stats.mac_filter_limit_overrun++;
-		netdev_info(netdev, "Can not add more than %d mac addresses\n",
-			    adapter->fhash.fmax);
-		return;
+	if (adapter->flags & QLCNIC_VLAN_FILTERING) {
+		if (protocol == ETH_P_8021Q) {
+			vh = (struct vlan_ethhdr *)skb->data;
+			vlan_id = ntohs(vh->h_vlan_TCI);
+		} else if (vlan_tx_tag_present(skb)) {
+			vlan_id = vlan_tx_tag_get(skb);
+		}
 	}
 
 	memcpy(&src_addr, phdr->h_source, ETH_ALEN);
-	hindex = qlcnic_mac_hash(src_addr) & (adapter->fhash.fbucket_size - 1);
+	hval = qlcnic_mac_hash(src_addr, vlan_id);
+	hindex = hval & (adapter->fhash.fbucket_size - 1);
 	head = &(adapter->fhash.fhead[hindex]);
 
 	hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
-		if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
+		if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) &&
 		    tmp_fil->vlan_id == vlan_id) {
 			if (jiffies > (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
 				qlcnic_change_filter(adapter, &src_addr,
@@ -356,6 +341,11 @@ static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
 		}
 	}
 
+	if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) {
+		adapter->stats.mac_filter_limit_overrun++;
+		return;
+	}
+
 	fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
 	if (!fil)
 		return;
@@ -370,6 +360,101 @@ static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
 	spin_unlock(&adapter->mac_learn_lock);
 }
 
+#define QLCNIC_ENCAP_VXLAN_PKT		BIT_0
+#define QLCNIC_ENCAP_OUTER_L3_IP6	BIT_1
+#define QLCNIC_ENCAP_INNER_L3_IP6	BIT_2
+#define QLCNIC_ENCAP_INNER_L4_UDP	BIT_3
+#define QLCNIC_ENCAP_DO_L3_CSUM		BIT_4
+#define QLCNIC_ENCAP_DO_L4_CSUM		BIT_5
+
+static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter,
+			       struct cmd_desc_type0 *first_desc,
+			       struct sk_buff *skb,
+			       struct qlcnic_host_tx_ring *tx_ring)
+{
+	u8 opcode = 0, inner_hdr_len = 0, outer_hdr_len = 0, total_hdr_len = 0;
+	int copied, copy_len, descr_size;
+	u32 producer = tx_ring->producer;
+	struct cmd_desc_type0 *hwdesc;
+	u16 flags = 0, encap_descr = 0;
+
+	opcode = QLCNIC_TX_ETHER_PKT;
+	encap_descr = QLCNIC_ENCAP_VXLAN_PKT;
+
+	if (skb_is_gso(skb)) {
+		inner_hdr_len = skb_inner_transport_header(skb) +
+				inner_tcp_hdrlen(skb) -
+				skb_inner_mac_header(skb);
+
+		/* VXLAN header size = 8 */
+		outer_hdr_len = skb_transport_offset(skb) + 8 +
+				sizeof(struct udphdr);
+		first_desc->outer_hdr_length = outer_hdr_len;
+		total_hdr_len = inner_hdr_len + outer_hdr_len;
+		encap_descr |= QLCNIC_ENCAP_DO_L3_CSUM |
+			       QLCNIC_ENCAP_DO_L4_CSUM;
+		first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
+		first_desc->hdr_length = inner_hdr_len;
+
+		/* Copy inner and outer headers in Tx descriptor(s)
+		 * If total_hdr_len > cmd_desc_type0, use multiple
+		 * descriptors
+		 */
+		copied = 0;
+		descr_size = (int)sizeof(struct cmd_desc_type0);
+		while (copied < total_hdr_len) {
+			copy_len = min(descr_size, (total_hdr_len - copied));
+			hwdesc = &tx_ring->desc_head[producer];
+			tx_ring->cmd_buf_arr[producer].skb = NULL;
+			skb_copy_from_linear_data_offset(skb, copied,
+							 (char *)hwdesc,
+							 copy_len);
+			copied += copy_len;
+			producer = get_next_index(producer, tx_ring->num_desc);
+		}
+
+		tx_ring->producer = producer;
+
+		/* Make sure updated tx_ring->producer is visible
+		 * for qlcnic_tx_avail()
+		 */
+		smp_mb();
+		adapter->stats.encap_lso_frames++;
+
+		opcode = QLCNIC_TX_ENCAP_LSO;
+	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		if (inner_ip_hdr(skb)->version == 6) {
+			if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
+				encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
+		} else {
+			if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP)
+				encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
+		}
+
+		adapter->stats.encap_tx_csummed++;
+		opcode = QLCNIC_TX_ENCAP_PKT;
+	}
+
+	/* Prepare first 16 bits of byte offset 16 of Tx descriptor */
+	if (ip_hdr(skb)->version == 6)
+		encap_descr |= QLCNIC_ENCAP_OUTER_L3_IP6;
+
+	/* outer IP header's size in 32bit words size*/
+	encap_descr |= (skb_network_header_len(skb) >> 2) << 6;
+
+	/* outer IP header offset */
+	encap_descr |= skb_network_offset(skb) << 10;
+	first_desc->encap_descr = cpu_to_le16(encap_descr);
+
+	first_desc->tcp_hdr_offset = skb_inner_transport_header(skb) -
+				     skb->data;
+	first_desc->ip_hdr_offset = skb_inner_network_offset(skb);
+
+	qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
+
+	return 0;
+}
+
 static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
 			 struct cmd_desc_type0 *first_desc, struct sk_buff *skb,
 			 struct qlcnic_host_tx_ring *tx_ring)
@@ -384,11 +469,11 @@ static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
 
 	if (protocol == ETH_P_8021Q) {
 		vh = (struct vlan_ethhdr *)skb->data;
-		flags = FLAGS_VLAN_TAGGED;
+		flags = QLCNIC_FLAGS_VLAN_TAGGED;
 		vlan_tci = ntohs(vh->h_vlan_TCI);
 		protocol = ntohs(vh->h_vlan_encapsulated_proto);
 	} else if (vlan_tx_tag_present(skb)) {
-		flags = FLAGS_VLAN_OOB;
+		flags = QLCNIC_FLAGS_VLAN_OOB;
 		vlan_tci = vlan_tx_tag_get(skb);
 	}
 	if (unlikely(adapter->tx_pvid)) {
@@ -397,7 +482,7 @@ static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
 		if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
 			goto set_flags;
 
-		flags = FLAGS_VLAN_OOB;
+		flags = QLCNIC_FLAGS_VLAN_OOB;
 		vlan_tci = adapter->tx_pvid;
 	}
 set_flags:
@@ -408,25 +493,26 @@ set_flags:
 		flags |= BIT_0;
 		memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
 	}
-	opcode = TX_ETHER_PKT;
+	opcode = QLCNIC_TX_ETHER_PKT;
 	if (skb_is_gso(skb)) {
 		hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
 		first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
-		first_desc->total_hdr_length = hdr_len;
-		opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO;
+		first_desc->hdr_length = hdr_len;
+		opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 :
+						    QLCNIC_TX_TCP_LSO;
 
 		/* For LSO, we need to copy the MAC/IP/TCP headers into
 		* the descriptor ring */
 		copied = 0;
 		offset = 2;
 
-		if (flags & FLAGS_VLAN_OOB) {
-			first_desc->total_hdr_length += VLAN_HLEN;
+		if (flags & QLCNIC_FLAGS_VLAN_OOB) {
+			first_desc->hdr_length += VLAN_HLEN;
 			first_desc->tcp_hdr_offset = VLAN_HLEN;
 			first_desc->ip_hdr_offset = VLAN_HLEN;
 
 			/* Only in case of TSO on vlan device */
-			flags |= FLAGS_VLAN_TAGGED;
+			flags |= QLCNIC_FLAGS_VLAN_TAGGED;
 
 			/* Create a TSO vlan header template for firmware */
 			hwdesc = &tx_ring->desc_head[producer];
@@ -470,16 +556,16 @@ set_flags:
 			l4proto = ip_hdr(skb)->protocol;
 
 			if (l4proto == IPPROTO_TCP)
-				opcode = TX_TCP_PKT;
+				opcode = QLCNIC_TX_TCP_PKT;
 			else if (l4proto == IPPROTO_UDP)
-				opcode = TX_UDP_PKT;
+				opcode = QLCNIC_TX_UDP_PKT;
 		} else if (protocol == ETH_P_IPV6) {
 			l4proto = ipv6_hdr(skb)->nexthdr;
 
 			if (l4proto == IPPROTO_TCP)
-				opcode = TX_TCPV6_PKT;
+				opcode = QLCNIC_TX_TCPV6_PKT;
 			else if (l4proto == IPPROTO_UDP)
-				opcode = TX_UDPV6_PKT;
+				opcode = QLCNIC_TX_UDPV6_PKT;
 		}
 	}
 	first_desc->tcp_hdr_offset += skb_transport_offset(skb);
@@ -569,6 +655,8 @@ netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	struct ethhdr *phdr;
 	int i, k, frag_count, delta = 0;
 	u32 producer, num_txd;
+	u16 protocol;
+	bool l4_is_udp = false;
 
 	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
 		netif_tx_stop_all_queues(netdev);
@@ -659,8 +747,23 @@ netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	tx_ring->producer = get_next_index(producer, num_txd);
 	smp_mb();
 
-	if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb, tx_ring)))
-		goto unwind_buff;
+	protocol = ntohs(skb->protocol);
+	if (protocol == ETH_P_IP)
+		l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP;
+	else if (protocol == ETH_P_IPV6)
+		l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP;
+
+	/* Check if it is a VXLAN packet */
+	if (!skb->encapsulation || !l4_is_udp ||
+	    !qlcnic_encap_tx_offload(adapter)) {
+		if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb,
+					   tx_ring)))
+			goto unwind_buff;
+	} else {
+		if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc,
+						 skb, tx_ring)))
+			goto unwind_buff;
+	}
 
 	if (adapter->drv_mac_learn)
 		qlcnic_send_filter(adapter, first_desc, skb);
@@ -687,17 +790,20 @@ void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
 	if (adapter->ahw->linkup && !linkup) {
 		netdev_info(netdev, "NIC Link is down\n");
 		adapter->ahw->linkup = 0;
-		if (netif_running(netdev)) {
-			netif_carrier_off(netdev);
-			netif_tx_stop_all_queues(netdev);
-		}
+		netif_carrier_off(netdev);
 	} else if (!adapter->ahw->linkup && linkup) {
-		netdev_info(netdev, "NIC Link is up\n");
 		adapter->ahw->linkup = 1;
-		if (netif_running(netdev)) {
-			netif_carrier_on(netdev);
-			netif_wake_queue(netdev);
+
+		/* Do not advertise Link up to the stack if device
+		 * is in loopback mode
+		 */
+		if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) {
+			netdev_info(netdev, "NIC Link is up for loopback test\n");
+			return;
 		}
+
+		netdev_info(netdev, "NIC Link is up\n");
+		netif_carrier_on(netdev);
 	}
 }
 
@@ -784,7 +890,7 @@ static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
 	struct net_device *netdev = adapter->netdev;
 	struct qlcnic_skb_frag *frag;
 
-	if (!spin_trylock(&adapter->tx_clean_lock))
+	if (!spin_trylock(&tx_ring->tx_clean_lock))
 		return 1;
 
 	sw_consumer = tx_ring->sw_consumer;
@@ -813,8 +919,9 @@ static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
 			break;
 	}
 
+	tx_ring->sw_consumer = sw_consumer;
+
 	if (count && netif_running(netdev)) {
-		tx_ring->sw_consumer = sw_consumer;
 		smp_mb();
 		if (netif_tx_queue_stopped(tx_ring->txq) &&
 		    netif_carrier_ok(netdev)) {
@@ -840,7 +947,8 @@ static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
 	 */
 	hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
 	done = (sw_consumer == hw_consumer);
-	spin_unlock(&adapter->tx_clean_lock);
+
+	spin_unlock(&tx_ring->tx_clean_lock);
 
 	return done;
 }
@@ -862,7 +970,7 @@ static int qlcnic_poll(struct napi_struct *napi, int budget)
 	if ((work_done < budget) && tx_complete) {
 		napi_complete(&sds_ring->napi);
 		if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
-			qlcnic_enable_int(sds_ring);
+			qlcnic_enable_sds_intr(adapter, sds_ring);
 			qlcnic_enable_tx_intr(adapter, tx_ring);
 		}
 	}
@@ -903,7 +1011,7 @@ static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
 	if (work_done < budget) {
 		napi_complete(&sds_ring->napi);
 		if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
-			qlcnic_enable_int(sds_ring);
+			qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	return work_done;
@@ -1015,9 +1123,9 @@ static void qlcnic_handle_fw_message(int desc_cnt, int index,
 	}
 }
 
-struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
-				     struct qlcnic_host_rds_ring *ring,
-				     u16 index, u16 cksum)
+static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
+					    struct qlcnic_host_rds_ring *ring,
+					    u16 index, u16 cksum)
 {
 	struct qlcnic_rx_buffer *buffer;
 	struct sk_buff *skb;
@@ -1101,8 +1209,7 @@ qlcnic_process_rcv(struct qlcnic_adapter *adapter,
 	if (!skb)
 		return buffer;
 
-	if (adapter->drv_mac_learn &&
-	    (adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
+	if (adapter->rx_mac_learn) {
 		t_vid = 0;
 		is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
 		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
@@ -1156,13 +1263,13 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
 	u16 lro_length, length, data_offset, t_vid, vid = 0xffff;
 	u32 seq_number;
 
-	if (unlikely(ring > adapter->max_rds_rings))
+	if (unlikely(ring >= adapter->max_rds_rings))
 		return NULL;
 
 	rds_ring = &recv_ctx->rds_rings[ring];
 
 	index = qlcnic_get_lro_sts_refhandle(sts_data0);
-	if (unlikely(index > rds_ring->num_desc))
+	if (unlikely(index >= rds_ring->num_desc))
 		return NULL;
 
 	buffer = &rds_ring->rx_buf_arr[index];
@@ -1178,8 +1285,7 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
 	if (!skb)
 		return buffer;
 
-	if (adapter->drv_mac_learn &&
-	    (adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
+	if (adapter->rx_mac_learn) {
 		t_vid = 0;
 		is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
 		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
@@ -1236,7 +1342,7 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
 	return buffer;
 }
 
-int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
+static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
 {
 	struct qlcnic_host_rds_ring *rds_ring;
 	struct qlcnic_adapter *adapter = sds_ring->adapter;
@@ -1466,8 +1572,7 @@ int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
 	for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
 		if (qlcnic_check_multi_tx(adapter) &&
-		    !adapter->ahw->diag_test &&
-		    (adapter->drv_tx_rings > QLCNIC_SINGLE_RING)) {
+		    !adapter->ahw->diag_test) {
 			netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll,
 				       NAPI_POLL_WEIGHT);
 		} else {
@@ -1535,13 +1640,12 @@ void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter)
 	for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
 		napi_enable(&sds_ring->napi);
-		qlcnic_enable_int(sds_ring);
+		qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	if (qlcnic_check_multi_tx(adapter) &&
 	    (adapter->flags & QLCNIC_MSIX_ENABLED) &&
-	    !adapter->ahw->diag_test &&
-	    (adapter->drv_tx_rings > QLCNIC_SINGLE_RING)) {
+	    !adapter->ahw->diag_test) {
 		for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
 			tx_ring = &adapter->tx_ring[ring];
 			napi_enable(&tx_ring->napi);
@@ -1562,7 +1666,7 @@ void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
 
 	for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
-		qlcnic_disable_int(sds_ring);
+		qlcnic_disable_sds_intr(adapter, sds_ring);
 		napi_synchronize(&sds_ring->napi);
 		napi_disable(&sds_ring->napi);
 	}
@@ -1572,7 +1676,7 @@ void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
 	    qlcnic_check_multi_tx(adapter)) {
 		for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
 			tx_ring = &adapter->tx_ring[ring];
-			qlcnic_disable_tx_int(adapter, tx_ring);
+			qlcnic_disable_tx_intr(adapter, tx_ring);
 			napi_synchronize(&tx_ring->napi);
 			napi_disable(&tx_ring->napi);
 		}
@@ -1590,6 +1694,13 @@ static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt)
 		return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0;
 }
 
+#define QLCNIC_ENCAP_LENGTH_MASK	0x7f
+
+static inline u8 qlcnic_encap_length(u64 sts_data)
+{
+	return sts_data & QLCNIC_ENCAP_LENGTH_MASK;
+}
+
 static struct qlcnic_rx_buffer *
 qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 			struct qlcnic_host_sds_ring *sds_ring,
@@ -1601,7 +1712,8 @@ qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 	struct sk_buff *skb;
 	struct qlcnic_host_rds_ring *rds_ring;
 	int index, length, cksum, is_lb_pkt;
-	u16 vid = 0xffff, t_vid;
+	u16 vid = 0xffff;
+	int err;
 
 	if (unlikely(ring >= adapter->max_rds_rings))
 		return NULL;
@@ -1619,19 +1731,19 @@ qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 	if (!skb)
 		return buffer;
 
-	if (adapter->drv_mac_learn &&
-	    (adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
-		t_vid = 0;
-		is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0);
-		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
-	}
-
 	if (length > rds_ring->skb_size)
 		skb_put(skb, rds_ring->skb_size);
 	else
 		skb_put(skb, length);
 
-	if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
+	err = qlcnic_check_rx_tagging(adapter, skb, &vid);
+
+	if (adapter->rx_mac_learn) {
+		is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0);
+		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
+	}
+
+	if (unlikely(err)) {
 		adapter->stats.rxdropped++;
 		dev_kfree_skb(skb);
 		return buffer;
@@ -1639,6 +1751,12 @@ qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 
 	skb->protocol = eth_type_trans(skb, netdev);
 
+	if (qlcnic_encap_length(sts_data[1]) &&
+	    skb->ip_summed == CHECKSUM_UNNECESSARY) {
+		skb->encapsulation = 1;
+		adapter->stats.encap_rx_csummed++;
+	}
+
 	if (vid != 0xffff)
 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 
@@ -1666,15 +1784,16 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	int l2_hdr_offset, l4_hdr_offset;
 	int index, is_lb_pkt;
 	u16 lro_length, length, data_offset, gso_size;
-	u16 vid = 0xffff, t_vid;
+	u16 vid = 0xffff;
+	int err;
 
-	if (unlikely(ring > adapter->max_rds_rings))
+	if (unlikely(ring >= adapter->max_rds_rings))
 		return NULL;
 
 	rds_ring = &recv_ctx->rds_rings[ring];
 
 	index = qlcnic_83xx_hndl(sts_data[0]);
-	if (unlikely(index > rds_ring->num_desc))
+	if (unlikely(index >= rds_ring->num_desc))
 		return NULL;
 
 	buffer = &rds_ring->rx_buf_arr[index];
@@ -1688,12 +1807,6 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	if (!skb)
 		return buffer;
 
-	if (adapter->drv_mac_learn &&
-	    (adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
-		t_vid = 0;
-		is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1);
-		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
-	}
 	if (qlcnic_83xx_is_tstamp(sts_data[1]))
 		data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE;
 	else
@@ -1702,7 +1815,14 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	skb_put(skb, lro_length + data_offset);
 	skb_pull(skb, l2_hdr_offset);
 
-	if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
+	err = qlcnic_check_rx_tagging(adapter, skb, &vid);
+
+	if (adapter->rx_mac_learn) {
+		is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1);
+		qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
+	}
+
+	if (unlikely(err)) {
 		adapter->stats.rxdropped++;
 		dev_kfree_skb(skb);
 		return buffer;
@@ -1832,7 +1952,7 @@ static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget)
 	work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
 	if ((work_done < budget) && tx_complete) {
 		napi_complete(&sds_ring->napi);
-		qlcnic_83xx_enable_intr(adapter, sds_ring);
+		qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	return work_done;
@@ -1855,7 +1975,7 @@ static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
 	work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
 	if ((work_done < budget) && tx_complete) {
 		napi_complete(&sds_ring->napi);
-		qlcnic_83xx_enable_intr(adapter, sds_ring);
+		qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	return work_done;
@@ -1874,7 +1994,7 @@ static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget)
 	if (work_done) {
 		napi_complete(&tx_ring->napi);
 		if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
-			qlcnic_83xx_enable_tx_intr(adapter, tx_ring);
+			qlcnic_enable_tx_intr(adapter, tx_ring);
 	}
 
 	return work_done;
@@ -1892,7 +2012,7 @@ static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget)
 	if (work_done < budget) {
 		napi_complete(&sds_ring->napi);
 		if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
-			qlcnic_83xx_enable_intr(adapter, sds_ring);
+			qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	return work_done;
@@ -1912,7 +2032,7 @@ void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
 		sds_ring = &recv_ctx->sds_rings[ring];
 		napi_enable(&sds_ring->napi);
 		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_enable_intr(adapter, sds_ring);
+			qlcnic_enable_sds_intr(adapter, sds_ring);
 	}
 
 	if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
@@ -1920,7 +2040,7 @@ void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
 		for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
 			tx_ring = &adapter->tx_ring[ring];
 			napi_enable(&tx_ring->napi);
-			qlcnic_83xx_enable_tx_intr(adapter, tx_ring);
+			qlcnic_enable_tx_intr(adapter, tx_ring);
 		}
 	}
 }
@@ -1938,7 +2058,7 @@ void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
 	for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
 		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_disable_intr(adapter, sds_ring);
+			qlcnic_disable_sds_intr(adapter, sds_ring);
 		napi_synchronize(&sds_ring->napi);
 		napi_disable(&sds_ring->napi);
 	}
@@ -1947,7 +2067,7 @@ void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
 	    !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
 		for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
 			tx_ring = &adapter->tx_ring[ring];
-			qlcnic_83xx_disable_tx_intr(adapter, tx_ring);
+			qlcnic_disable_tx_intr(adapter, tx_ring);
 			napi_synchronize(&tx_ring->napi);
 			napi_disable(&tx_ring->napi);
 		}
@@ -2027,8 +2147,8 @@ void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
 	qlcnic_free_tx_rings(adapter);
 }
 
-void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
-				  int ring, u64 sts_data[])
+static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
+					 int ring, u64 sts_data[])
 {
 	struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
 	struct sk_buff *skb;