1 files changed, 50 insertions, 16 deletions

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 1b55047c0237..f7c4ce8e9a26 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -840,6 +840,8 @@ static int fec_enet_txq_submit_tso(struct fec_enet_priv_tx_q *txq,
 	struct fec_enet_private *fep = netdev_priv(ndev);
 	int hdr_len, total_len, data_left;
 	struct bufdesc *bdp = txq->bd.cur;
+	struct bufdesc *tmp_bdp;
+	struct bufdesc_ex *ebdp;
 	struct tso_t tso;
 	unsigned int index = 0;
 	int ret;
@@ -913,7 +915,34 @@ static int fec_enet_txq_submit_tso(struct fec_enet_priv_tx_q *txq,
 	return 0;
 
 err_release:
-	/* TODO: Release all used data descriptors for TSO */
+	/* Release all used data descriptors for TSO */
+	tmp_bdp = txq->bd.cur;
+
+	while (tmp_bdp != bdp) {
+		/* Unmap data buffers */
+		if (tmp_bdp->cbd_bufaddr &&
+		    !IS_TSO_HEADER(txq, fec32_to_cpu(tmp_bdp->cbd_bufaddr)))
+			dma_unmap_single(&fep->pdev->dev,
+					 fec32_to_cpu(tmp_bdp->cbd_bufaddr),
+					 fec16_to_cpu(tmp_bdp->cbd_datlen),
+					 DMA_TO_DEVICE);
+
+		/* Clear standard buffer descriptor fields */
+		tmp_bdp->cbd_sc = 0;
+		tmp_bdp->cbd_datlen = 0;
+		tmp_bdp->cbd_bufaddr = 0;
+
+		/* Handle extended descriptor if enabled */
+		if (fep->bufdesc_ex) {
+			ebdp = (struct bufdesc_ex *)tmp_bdp;
+			ebdp->cbd_esc = 0;
+		}
+
+		tmp_bdp = fec_enet_get_nextdesc(tmp_bdp, &txq->bd);
+	}
+
+	dev_kfree_skb_any(skb);
+
 	return ret;
 }
 
@@ -1591,19 +1620,22 @@ static void fec_enet_tx(struct net_device *ndev, int budget)
 		fec_enet_tx_queue(ndev, i, budget);
 }
 
-static void fec_enet_update_cbd(struct fec_enet_priv_rx_q *rxq,
+static int fec_enet_update_cbd(struct fec_enet_priv_rx_q *rxq,
 				struct bufdesc *bdp, int index)
 {
 	struct page *new_page;
 	dma_addr_t phys_addr;
 
 	new_page = page_pool_dev_alloc_pages(rxq->page_pool);
-	WARN_ON(!new_page);
-	rxq->rx_skb_info[index].page = new_page;
+	if (unlikely(!new_page))
+		return -ENOMEM;
 
+	rxq->rx_skb_info[index].page = new_page;
 	rxq->rx_skb_info[index].offset = FEC_ENET_XDP_HEADROOM;
 	phys_addr = page_pool_get_dma_addr(new_page) + FEC_ENET_XDP_HEADROOM;
 	bdp->cbd_bufaddr = cpu_to_fec32(phys_addr);
+
+	return 0;
 }
 
 static u32
@@ -1698,6 +1730,7 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id)
 	int cpu = smp_processor_id();
 	struct xdp_buff xdp;
 	struct page *page;
+	__fec32 cbd_bufaddr;
 	u32 sub_len = 4;
 
 #if !defined(CONFIG_M5272)
@@ -1766,12 +1799,17 @@ fec_enet_rx_queue(struct net_device *ndev, int budget, u16 queue_id)
 
 		index = fec_enet_get_bd_index(bdp, &rxq->bd);
 		page = rxq->rx_skb_info[index].page;
+		cbd_bufaddr = bdp->cbd_bufaddr;
+		if (fec_enet_update_cbd(rxq, bdp, index)) {
+			ndev->stats.rx_dropped++;
+			goto rx_processing_done;
+		}
+
 		dma_sync_single_for_cpu(&fep->pdev->dev,
-					fec32_to_cpu(bdp->cbd_bufaddr),
+					fec32_to_cpu(cbd_bufaddr),
 					pkt_len,
 					DMA_FROM_DEVICE);
 		prefetch(page_address(page));
-		fec_enet_update_cbd(rxq, bdp, index);
 
 		if (xdp_prog) {
 			xdp_buff_clear_frags_flag(&xdp);
@@ -2045,14 +2083,14 @@ static int fec_enet_us_to_tx_cycle(struct net_device *ndev, int us)
 	return us * (fep->clk_ref_rate / 1000) / 1000;
 }
 
-static int fec_enet_eee_mode_set(struct net_device *ndev, bool enable)
+static int fec_enet_eee_mode_set(struct net_device *ndev, u32 lpi_timer,
+				 bool enable)
 {
 	struct fec_enet_private *fep = netdev_priv(ndev);
-	struct ethtool_keee *p = &fep->eee;
 	unsigned int sleep_cycle, wake_cycle;
 
 	if (enable) {
-		sleep_cycle = fec_enet_us_to_tx_cycle(ndev, p->tx_lpi_timer);
+		sleep_cycle = fec_enet_us_to_tx_cycle(ndev, lpi_timer);
 		wake_cycle = sleep_cycle;
 	} else {
 		sleep_cycle = 0;
@@ -2105,7 +2143,9 @@ static void fec_enet_adjust_link(struct net_device *ndev)
 			napi_enable(&fep->napi);
 		}
 		if (fep->quirks & FEC_QUIRK_HAS_EEE)
-			fec_enet_eee_mode_set(ndev, phy_dev->enable_tx_lpi);
+			fec_enet_eee_mode_set(ndev,
+					      phy_dev->eee_cfg.tx_lpi_timer,
+					      phy_dev->enable_tx_lpi);
 	} else {
 		if (fep->link) {
 			netif_stop_queue(ndev);
@@ -3181,7 +3221,6 @@ static int
 fec_enet_get_eee(struct net_device *ndev, struct ethtool_keee *edata)
 {
 	struct fec_enet_private *fep = netdev_priv(ndev);
-	struct ethtool_keee *p = &fep->eee;
 
 	if (!(fep->quirks & FEC_QUIRK_HAS_EEE))
 		return -EOPNOTSUPP;
@@ -3189,8 +3228,6 @@ fec_enet_get_eee(struct net_device *ndev, struct ethtool_keee *edata)
 	if (!netif_running(ndev))
 		return -ENETDOWN;
 
-	edata->tx_lpi_timer = p->tx_lpi_timer;
-
 	return phy_ethtool_get_eee(ndev->phydev, edata);
 }
 
@@ -3198,7 +3235,6 @@ static int
 fec_enet_set_eee(struct net_device *ndev, struct ethtool_keee *edata)
 {
 	struct fec_enet_private *fep = netdev_priv(ndev);
-	struct ethtool_keee *p = &fep->eee;
 
 	if (!(fep->quirks & FEC_QUIRK_HAS_EEE))
 		return -EOPNOTSUPP;
@@ -3206,8 +3242,6 @@ fec_enet_set_eee(struct net_device *ndev, struct ethtool_keee *edata)
 	if (!netif_running(ndev))
 		return -ENETDOWN;
 
-	p->tx_lpi_timer = edata->tx_lpi_timer;
-
 	return phy_ethtool_set_eee(ndev->phydev, edata);
 }