5 files changed, 31 insertions, 12 deletions

diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index de98a974673b..613249d1e967 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -168,6 +168,13 @@ struct qede_ptp;
 
 #define QEDE_RFS_MAX_FLTR	256
 
+enum qede_flags_bit {
+	QEDE_FLAGS_IS_VF = 0,
+	QEDE_FLAGS_LINK_REQUESTED,
+	QEDE_FLAGS_PTP_TX_IN_PRORGESS,
+	QEDE_FLAGS_TX_TIMESTAMPING_EN
+};
+
 struct qede_dev {
 	struct qed_dev			*cdev;
 	struct net_device		*ndev;
@@ -177,10 +184,7 @@ struct qede_dev {
 	u8				dp_level;
 
 	unsigned long flags;
-#define QEDE_FLAG_IS_VF			BIT(0)
-#define IS_VF(edev)	(!!((edev)->flags & QEDE_FLAG_IS_VF))
-#define QEDE_TX_TIMESTAMPING_EN		BIT(1)
-#define QEDE_FLAGS_PTP_TX_IN_PRORGESS	BIT(2)
+#define IS_VF(edev)	(test_bit(QEDE_FLAGS_IS_VF, &(edev)->flags))
 
 	const struct qed_eth_ops	*ops;
 	struct qede_ptp			*ptp;
@@ -377,6 +381,7 @@ struct qede_tx_queue {
 
 	u64 xmit_pkts;
 	u64 stopped_cnt;
+	u64 tx_mem_alloc_err;
 
 	__le16 *hw_cons_ptr;
 
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 8cbbd628fd73..16331c6c6fa7 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -73,6 +73,7 @@ static const struct {
 } qede_tqstats_arr[] = {
 	QEDE_TQSTAT(xmit_pkts),
 	QEDE_TQSTAT(stopped_cnt),
+	QEDE_TQSTAT(tx_mem_alloc_err),
 };
 
 #define QEDE_STAT_OFFSET(stat_name, type, base) \
diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
index 1a78027de071..bdf816fe5a16 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
@@ -1466,8 +1466,8 @@ netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
 	if (qede_pkt_req_lin(skb, xmit_type)) {
 		if (skb_linearize(skb)) {
-			DP_NOTICE(edev,
-				  "SKB linearization failed - silently dropping this SKB\n");
+			txq->tx_mem_alloc_err++;
+
 			dev_kfree_skb_any(skb);
 			return NETDEV_TX_OK;
 		}
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 46d0f2eaa0c0..5a74fcbdbc2b 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1086,7 +1086,7 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 	}
 
 	if (is_vf)
-		edev->flags |= QEDE_FLAG_IS_VF;
+		set_bit(QEDE_FLAGS_IS_VF, &edev->flags);
 
 	qede_init_ndev(edev);
 
@@ -1774,6 +1774,10 @@ static int qede_drain_txq(struct qede_dev *edev,
 static int qede_stop_txq(struct qede_dev *edev,
 			 struct qede_tx_queue *txq, int rss_id)
 {
+	/* delete doorbell from doorbell recovery mechanism */
+	edev->ops->common->db_recovery_del(edev->cdev, txq->doorbell_addr,
+					   &txq->tx_db);
+
 	return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
 }
 
@@ -1910,6 +1914,11 @@ static int qede_start_txq(struct qede_dev *edev,
 		  DQ_XCM_ETH_TX_BD_PROD_CMD);
 	txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
 
+	/* register doorbell with doorbell recovery mechanism */
+	rc = edev->ops->common->db_recovery_add(edev->cdev, txq->doorbell_addr,
+						&txq->tx_db, DB_REC_WIDTH_32B,
+						DB_REC_KERNEL);
+
 	return rc;
 }
 
@@ -2057,6 +2066,8 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
 	if (!is_locked)
 		__qede_lock(edev);
 
+	clear_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
+
 	edev->state = QEDE_STATE_CLOSED;
 
 	qede_rdma_dev_event_close(edev);
@@ -2163,6 +2174,8 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
 	/* Program un-configured VLANs */
 	qede_configure_vlan_filters(edev);
 
+	set_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags);
+
 	/* Ask for link-up using current configuration */
 	memset(&link_params, 0, sizeof(link_params));
 	link_params.link_up = true;
@@ -2258,8 +2271,8 @@ static void qede_link_update(void *dev, struct qed_link_output *link)
 {
 	struct qede_dev *edev = dev;
 
-	if (!netif_running(edev->ndev)) {
-		DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
+	if (!test_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags)) {
+		DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not ready\n");
 		return;
 	}
 
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ptp.c b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
index 013ff567283c..5f3f42a25361 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ptp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
@@ -223,12 +223,12 @@ static int qede_ptp_cfg_filters(struct qede_dev *edev)
 
 	switch (ptp->tx_type) {
 	case HWTSTAMP_TX_ON:
-		edev->flags |= QEDE_TX_TIMESTAMPING_EN;
+		set_bit(QEDE_FLAGS_TX_TIMESTAMPING_EN, &edev->flags);
 		tx_type = QED_PTP_HWTSTAMP_TX_ON;
 		break;
 
 	case HWTSTAMP_TX_OFF:
-		edev->flags &= ~QEDE_TX_TIMESTAMPING_EN;
+		clear_bit(QEDE_FLAGS_TX_TIMESTAMPING_EN, &edev->flags);
 		tx_type = QED_PTP_HWTSTAMP_TX_OFF;
 		break;
 
@@ -518,7 +518,7 @@ void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb)
 	if (test_and_set_bit_lock(QEDE_FLAGS_PTP_TX_IN_PRORGESS, &edev->flags))
 		return;
 
-	if (unlikely(!(edev->flags & QEDE_TX_TIMESTAMPING_EN))) {
+	if (unlikely(!test_bit(QEDE_FLAGS_TX_TIMESTAMPING_EN, &edev->flags))) {
 		DP_NOTICE(edev,
 			  "Tx timestamping was not enabled, this packet will not be timestamped\n");
 	} else if (unlikely(ptp->tx_skb)) {