Merge branch 'qed-fixes'

Sudarsana Reddy Kalluru says:

====================
qed*: fix series.

The patch series contains several minor bug fixes for qed/qede modules.
Please consider applying this to 'net' branch.
====================

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

drivers/net/ethernet/qlogic/qed/qed_dcbx.c

@@ -1190,6 +1190,7 @@ int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn,
 	if (!dcbx_info)
 		return -ENOMEM;
 
+	memset(dcbx_info, 0, sizeof(*dcbx_info));
 	rc = qed_dcbx_query_params(p_hwfn, dcbx_info, QED_DCBX_OPERATIONAL_MIB);
 	if (rc) {
 		kfree(dcbx_info);
@@ -1225,6 +1226,7 @@ static struct qed_dcbx_get *qed_dcbnl_get_dcbx(struct qed_hwfn *hwfn,
 	if (!dcbx_info)
 		return NULL;
 
+	memset(dcbx_info, 0, sizeof(*dcbx_info));
 	if (qed_dcbx_query_params(hwfn, dcbx_info, type)) {
 		kfree(dcbx_info);
 		return NULL;

drivers/net/ethernet/qlogic/qed/qed_main.c

@@ -878,6 +878,7 @@ static int qed_slowpath_start(struct qed_dev *cdev,
 		}
 	}
 
+	cdev->rx_coalesce_usecs = QED_DEFAULT_RX_USECS;
 	rc = qed_nic_setup(cdev);
 	if (rc)
 		goto err;

drivers/net/ethernet/qlogic/qede/qede.h

@@ -348,12 +348,13 @@ bool qede_has_rx_work(struct qede_rx_queue *rxq);
 int qede_txq_has_work(struct qede_tx_queue *txq);
 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, struct qede_dev *edev,
 			     u8 count);
+void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq);
 
 #define RX_RING_SIZE_POW	13
 #define RX_RING_SIZE		((u16)BIT(RX_RING_SIZE_POW))
 #define NUM_RX_BDS_MAX		(RX_RING_SIZE - 1)
 #define NUM_RX_BDS_MIN		128
-#define NUM_RX_BDS_DEF		NUM_RX_BDS_MAX
+#define NUM_RX_BDS_DEF		((u16)BIT(10) - 1)
 
 #define TX_RING_SIZE_POW	13
 #define TX_RING_SIZE		((u16)BIT(TX_RING_SIZE_POW))

drivers/net/ethernet/qlogic/qede/qede_ethtool.c

@@ -756,6 +756,8 @@ static void qede_get_channels(struct net_device *dev,
 	struct qede_dev *edev = netdev_priv(dev);
 
 	channels->max_combined = QEDE_MAX_RSS_CNT(edev);
+	channels->max_rx = QEDE_MAX_RSS_CNT(edev);
+	channels->max_tx = QEDE_MAX_RSS_CNT(edev);
 	channels->combined_count = QEDE_QUEUE_CNT(edev) - edev->fp_num_tx -
 					edev->fp_num_rx;
 	channels->tx_count = edev->fp_num_tx;
@@ -820,6 +822,13 @@ static int qede_set_channels(struct net_device *dev,
 	edev->req_queues = count;
 	edev->req_num_tx = channels->tx_count;
 	edev->req_num_rx = channels->rx_count;
+	/* Reset the indirection table if rx queue count is updated */
+	if ((edev->req_queues - edev->req_num_tx) != QEDE_RSS_COUNT(edev)) {
+		edev->rss_params_inited &= ~QEDE_RSS_INDIR_INITED;
+		memset(&edev->rss_params.rss_ind_table, 0,
+		       sizeof(edev->rss_params.rss_ind_table));
+	}
+
 	if (netif_running(dev))
 		qede_reload(edev, NULL, NULL);
 
@@ -1053,6 +1062,12 @@ static int qede_set_rxfh(struct net_device *dev, const u32 *indir,
 	struct qede_dev *edev = netdev_priv(dev);
 	int i;
 
+	if (edev->dev_info.common.num_hwfns > 1) {
+		DP_INFO(edev,
+			"RSS configuration is not supported for 100G devices\n");
+		return -EOPNOTSUPP;
+	}
+
 	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 		return -EOPNOTSUPP;
 
@@ -1184,8 +1199,8 @@ static int qede_selftest_transmit_traffic(struct qede_dev *edev,
 	}
 
 	first_bd = (struct eth_tx_1st_bd *)qed_chain_consume(&txq->tx_pbl);
-	dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
-		       BD_UNMAP_LEN(first_bd), DMA_TO_DEVICE);
+	dma_unmap_single(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
+			 BD_UNMAP_LEN(first_bd), DMA_TO_DEVICE);
 	txq->sw_tx_cons++;
 	txq->sw_tx_ring[idx].skb = NULL;
 
@@ -1199,8 +1214,8 @@ static int qede_selftest_receive_traffic(struct qede_dev *edev)
 	struct qede_rx_queue *rxq = NULL;
 	struct sw_rx_data *sw_rx_data;
 	union eth_rx_cqe *cqe;
+	int i, rc = 0;
 	u8 *data_ptr;
-	int i;
 
 	for_each_queue(i) {
 		if (edev->fp_array[i].type & QEDE_FASTPATH_RX) {
@@ -1219,46 +1234,60 @@ static int qede_selftest_receive_traffic(struct qede_dev *edev)
 	 * queue and that the loopback traffic is not IP.
 	 */
 	for (i = 0; i < QEDE_SELFTEST_POLL_COUNT; i++) {
-		if (qede_has_rx_work(rxq))
+		if (!qede_has_rx_work(rxq)) {
+			usleep_range(100, 200);
+			continue;
+		}
+
+		hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
+		sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
+
+		/* Memory barrier to prevent the CPU from doing speculative
+		 * reads of CQE/BD before reading hw_comp_cons. If the CQE is
+		 * read before it is written by FW, then FW writes CQE and SB,
+		 * and then the CPU reads the hw_comp_cons, it will use an old
+		 * CQE.
+		 */
+		rmb();
+
+		/* Get the CQE from the completion ring */
+		cqe = (union eth_rx_cqe *)qed_chain_consume(&rxq->rx_comp_ring);
+
+		/* Get the data from the SW ring */
+		sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
+		sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
+		fp_cqe = &cqe->fast_path_regular;
+		len =  le16_to_cpu(fp_cqe->len_on_first_bd);
+		data_ptr = (u8 *)(page_address(sw_rx_data->data) +
+				  fp_cqe->placement_offset +
+				  sw_rx_data->page_offset);
+		if (ether_addr_equal(data_ptr,  edev->ndev->dev_addr) &&
+		    ether_addr_equal(data_ptr + ETH_ALEN,
+				     edev->ndev->dev_addr)) {
+			for (i = ETH_HLEN; i < len; i++)
+				if (data_ptr[i] != (unsigned char)(i & 0xff)) {
+					rc = -1;
+					break;
+				}
+
+			qede_recycle_rx_bd_ring(rxq, edev, 1);
+			qed_chain_recycle_consumed(&rxq->rx_comp_ring);
 			break;
-		usleep_range(100, 200);
+		}
+
+		DP_INFO(edev, "Not the transmitted packet\n");
+		qede_recycle_rx_bd_ring(rxq, edev, 1);
+		qed_chain_recycle_consumed(&rxq->rx_comp_ring);
 	}
 
-	if (!qede_has_rx_work(rxq)) {
+	if (i == QEDE_SELFTEST_POLL_COUNT) {
 		DP_NOTICE(edev, "Failed to receive the traffic\n");
 		return -1;
 	}
 
-	hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
-	sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
+	qede_update_rx_prod(edev, rxq);
 
-	/* Memory barrier to prevent the CPU from doing speculative reads of CQE
-	 * / BD before reading hw_comp_cons. If the CQE is read before it is
-	 * written by FW, then FW writes CQE and SB, and then the CPU reads the
-	 * hw_comp_cons, it will use an old CQE.
-	 */
-	rmb();
-
-	/* Get the CQE from the completion ring */
-	cqe = (union eth_rx_cqe *)qed_chain_consume(&rxq->rx_comp_ring);
-
-	/* Get the data from the SW ring */
-	sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
-	sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
-	fp_cqe = &cqe->fast_path_regular;
-	len =  le16_to_cpu(fp_cqe->len_on_first_bd);
-	data_ptr = (u8 *)(page_address(sw_rx_data->data) +
-		     fp_cqe->placement_offset + sw_rx_data->page_offset);
-	for (i = ETH_HLEN; i < len; i++)
-		if (data_ptr[i] != (unsigned char)(i & 0xff)) {
-			DP_NOTICE(edev, "Loopback test failed\n");
-			qede_recycle_rx_bd_ring(rxq, edev, 1);
-			return -1;
-		}
-
-	qede_recycle_rx_bd_ring(rxq, edev, 1);
-
-	return 0;
+	return rc;
 }
 
 static int qede_selftest_run_loopback(struct qede_dev *edev, u32 loopback_mode)

drivers/net/ethernet/qlogic/qede/qede_main.c

@@ -313,8 +313,8 @@ static int qede_free_tx_pkt(struct qede_dev *edev,
 		split_bd_len = BD_UNMAP_LEN(split);
 		bds_consumed++;
 	}
-	dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
-		       BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
+	dma_unmap_single(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
+			 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
 
 	/* Unmap the data of the skb frags */
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, bds_consumed++) {
@@ -359,8 +359,8 @@ static void qede_free_failed_tx_pkt(struct qede_dev *edev,
 		nbd--;
 	}
 
-	dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
-		       BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
+	dma_unmap_single(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
+			 BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
 
 	/* Unmap the data of the skb frags */
 	for (i = 0; i < nbd; i++) {
@@ -943,8 +943,7 @@ static inline int qede_realloc_rx_buffer(struct qede_dev *edev,
 	return 0;
 }
 
-static inline void qede_update_rx_prod(struct qede_dev *edev,
-				       struct qede_rx_queue *rxq)
+void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq)
 {
 	u16 bd_prod = qed_chain_get_prod_idx(&rxq->rx_bd_ring);
 	u16 cqe_prod = qed_chain_get_prod_idx(&rxq->rx_comp_ring);

include/linux/qed/qed_if.h

@@ -146,6 +146,7 @@ enum qed_led_mode {
 #define DIRECT_REG_RD(reg_addr) readl((void __iomem *)(reg_addr))
 
 #define QED_COALESCE_MAX 0xFF
+#define QED_DEFAULT_RX_USECS 12
 
 /* forward */
 struct qed_dev;