18 files changed, 373 insertions, 185 deletions

diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c
index 2b92d712f212..86e621142d5b 100644
--- a/drivers/net/ethernet/3com/3c59x.c
+++ b/drivers/net/ethernet/3com/3c59x.c
@@ -2128,6 +2128,7 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
         int entry = vp->cur_tx % TX_RING_SIZE;
         struct boom_tx_desc *prev_entry = &vp->tx_ring[(vp->cur_tx-1) % TX_RING_SIZE];
         unsigned long flags;
+        dma_addr_t dma_addr;
 
         if (vortex_debug > 6) {
                 pr_debug("boomerang_start_xmit()\n");
@@ -2162,24 +2163,48 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
                         vp->tx_ring[entry].status = cpu_to_le32(skb->len | TxIntrUploaded | AddTCPChksum | AddUDPChksum);
 
         if (!skb_shinfo(skb)->nr_frags) {
-                vp->tx_ring[entry].frag[0].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data,
-                                                                                skb->len, PCI_DMA_TODEVICE));
+                dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data, skb->len,
+                                          PCI_DMA_TODEVICE);
+                if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
+                        goto out_dma_err;
+
+                vp->tx_ring[entry].frag[0].addr = cpu_to_le32(dma_addr);
                 vp->tx_ring[entry].frag[0].length = cpu_to_le32(skb->len | LAST_FRAG);
         } else {
                 int i;
 
-                vp->tx_ring[entry].frag[0].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data,
-                                                                                skb_headlen(skb), PCI_DMA_TODEVICE));
+                dma_addr = pci_map_single(VORTEX_PCI(vp), skb->data,
+                                          skb_headlen(skb), PCI_DMA_TODEVICE);
+                if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
+                        goto out_dma_err;
+
+                vp->tx_ring[entry].frag[0].addr = cpu_to_le32(dma_addr);
                 vp->tx_ring[entry].frag[0].length = cpu_to_le32(skb_headlen(skb));
 
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
+                        dma_addr = skb_frag_dma_map(&VORTEX_PCI(vp)->dev, frag,
+                                                    0,
+                                                    frag->size,
+                                                    DMA_TO_DEVICE);
+                        if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr)) {
+                                for(i = i-1; i >= 0; i--)
+                                        dma_unmap_page(&VORTEX_PCI(vp)->dev,
+                                                       le32_to_cpu(vp->tx_ring[entry].frag[i+1].addr),
+                                                       le32_to_cpu(vp->tx_ring[entry].frag[i+1].length),
+                                                       DMA_TO_DEVICE);
+
+                                pci_unmap_single(VORTEX_PCI(vp),
+                                                 le32_to_cpu(vp->tx_ring[entry].frag[0].addr),
+                                                 le32_to_cpu(vp->tx_ring[entry].frag[0].length),
+                                                 PCI_DMA_TODEVICE);
+
+                                goto out_dma_err;
+                        }
+
                         vp->tx_ring[entry].frag[i+1].addr =
-                                        cpu_to_le32(skb_frag_dma_map(
-                                                &VORTEX_PCI(vp)->dev,
-                                                frag,
-                                                frag->page_offset, frag->size, DMA_TO_DEVICE));
+                                                cpu_to_le32(dma_addr);
 
                         if (i == skb_shinfo(skb)->nr_frags-1)
                                         vp->tx_ring[entry].frag[i+1].length = cpu_to_le32(skb_frag_size(frag)|LAST_FRAG);
@@ -2188,7 +2213,10 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 }
         }
 #else
-        vp->tx_ring[entry].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, skb->len, PCI_DMA_TODEVICE));
+        dma_addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, skb->len, PCI_DMA_TODEVICE));
+        if (dma_mapping_error(&VORTEX_PCI(vp)->dev, dma_addr))
+                goto out_dma_err;
+        vp->tx_ring[entry].addr = cpu_to_le32(dma_addr);
         vp->tx_ring[entry].length = cpu_to_le32(skb->len | LAST_FRAG);
         vp->tx_ring[entry].status = cpu_to_le32(skb->len | TxIntrUploaded);
 #endif
@@ -2216,7 +2244,11 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
         skb_tx_timestamp(skb);
         iowrite16(DownUnstall, ioaddr + EL3_CMD);
         spin_unlock_irqrestore(&vp->lock, flags);
+out:
         return NETDEV_TX_OK;
+out_dma_err:
+        dev_err(&VORTEX_PCI(vp)->dev, "Error mapping dma buffer\n");
+        goto out;
 }
 
 /* The interrupt handler does all of the Rx thread work and cleans up
diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
index dbea8472bfb4..abe1eabc0171 100644
--- a/drivers/net/ethernet/arc/emac_main.c
+++ b/drivers/net/ethernet/arc/emac_main.c
@@ -28,6 +28,17 @@
 
 
 /**
+ * arc_emac_tx_avail - Return the number of available slots in the tx ring.
+ * @priv: Pointer to ARC EMAC private data structure.
+ *
+ * returns: the number of slots available for transmission in tx the ring.
+ */
+static inline int arc_emac_tx_avail(struct arc_emac_priv *priv)
+{
+        return (priv->txbd_dirty + TX_BD_NUM - priv->txbd_curr - 1) % TX_BD_NUM;
+}
+
+/**
  * arc_emac_adjust_link - Adjust the PHY link duplex.
  * @ndev:       Pointer to the net_device structure.
  *
@@ -182,10 +193,15 @@ static void arc_emac_tx_clean(struct net_device *ndev)
                 txbd->info = 0;
 
                 *txbd_dirty = (*txbd_dirty + 1) % TX_BD_NUM;
-
-                if (netif_queue_stopped(ndev))
-                        netif_wake_queue(ndev);
         }
+
+        /* Ensure that txbd_dirty is visible to tx() before checking
+         * for queue stopped.
+         */
+        smp_mb();
+
+        if (netif_queue_stopped(ndev) && arc_emac_tx_avail(priv))
+                netif_wake_queue(ndev);
 }
 
 /**
@@ -300,7 +316,7 @@ static int arc_emac_poll(struct napi_struct *napi, int budget)
         work_done = arc_emac_rx(ndev, budget);
         if (work_done < budget) {
                 napi_complete(napi);
-                arc_reg_or(priv, R_ENABLE, RXINT_MASK);
+                arc_reg_or(priv, R_ENABLE, RXINT_MASK | TXINT_MASK);
         }
 
         return work_done;
@@ -329,9 +345,9 @@ static irqreturn_t arc_emac_intr(int irq, void *dev_instance)
         /* Reset all flags except "MDIO complete" */
         arc_reg_set(priv, R_STATUS, status);
 
-        if (status & RXINT_MASK) {
+        if (status & (RXINT_MASK | TXINT_MASK)) {
                 if (likely(napi_schedule_prep(&priv->napi))) {
-                        arc_reg_clr(priv, R_ENABLE, RXINT_MASK);
+                        arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK);
                         __napi_schedule(&priv->napi);
                 }
         }
@@ -442,7 +458,7 @@ static int arc_emac_open(struct net_device *ndev)
         arc_reg_set(priv, R_TX_RING, (unsigned int)priv->txbd_dma);
 
         /* Enable interrupts */
-        arc_reg_set(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
+        arc_reg_set(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
 
         /* Set CONTROL */
         arc_reg_set(priv, R_CTRL,
@@ -513,7 +529,7 @@ static int arc_emac_stop(struct net_device *ndev)
         netif_stop_queue(ndev);
 
         /* Disable interrupts */
-        arc_reg_clr(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
+        arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
 
         /* Disable EMAC */
         arc_reg_clr(priv, R_CTRL, EN_MASK);
@@ -576,11 +592,9 @@ static int arc_emac_tx(struct sk_buff *skb, struct net_device *ndev)
 
         len = max_t(unsigned int, ETH_ZLEN, skb->len);
 
-        /* EMAC still holds this buffer in its possession.
-         * CPU must not modify this buffer descriptor
-         */
-        if (unlikely((le32_to_cpu(*info) & OWN_MASK) == FOR_EMAC)) {
+        if (unlikely(!arc_emac_tx_avail(priv))) {
                 netif_stop_queue(ndev);
+                netdev_err(ndev, "BUG! Tx Ring full when queue awake!\n");
                 return NETDEV_TX_BUSY;
         }
 
@@ -609,12 +623,19 @@ static int arc_emac_tx(struct sk_buff *skb, struct net_device *ndev)
         /* Increment index to point to the next BD */
         *txbd_curr = (*txbd_curr + 1) % TX_BD_NUM;
 
-        /* Get "info" of the next BD */
-        info = &priv->txbd[*txbd_curr].info;
+        /* Ensure that tx_clean() sees the new txbd_curr before
+         * checking the queue status. This prevents an unneeded wake
+         * of the queue in tx_clean().
+         */
+        smp_mb();
 
-        /* Check if if Tx BD ring is full - next BD is still owned by EMAC */
-        if (unlikely((le32_to_cpu(*info) & OWN_MASK) == FOR_EMAC))
+        if (!arc_emac_tx_avail(priv)) {
                 netif_stop_queue(ndev);
+                /* Refresh tx_dirty */
+                smp_mb();
+                if (arc_emac_tx_avail(priv))
+                        netif_start_queue(ndev);
+        }
 
         arc_reg_set(priv, R_STATUS, TXPL_MASK);
 
diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index 56fadbd4258a..416620fa8fac 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -1697,7 +1697,7 @@ static struct rtnl_link_stats64 *b44_get_stats64(struct net_device *dev,
                                      hwstat->tx_underruns +
                                      hwstat->tx_excessive_cols +
                                      hwstat->tx_late_cols);
-                nstat->multicast  = hwstat->tx_multicast_pkts;
+                nstat->multicast  = hwstat->rx_multicast_pkts;
                 nstat->collisions = hwstat->tx_total_cols;
 
                 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 662cf2222873..77f1ff7396ac 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -543,6 +543,25 @@ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
         while ((processed < to_process) && (processed < budget)) {
                 cb = &priv->rx_cbs[priv->rx_read_ptr];
                 skb = cb->skb;
+
+                processed++;
+                priv->rx_read_ptr++;
+
+                if (priv->rx_read_ptr == priv->num_rx_bds)
+                        priv->rx_read_ptr = 0;
+
+                /* We do not have a backing SKB, so we do not a corresponding
+                 * DMA mapping for this incoming packet since
+                 * bcm_sysport_rx_refill always either has both skb and mapping
+                 * or none.
+                 */
+                if (unlikely(!skb)) {
+                        netif_err(priv, rx_err, ndev, "out of memory!\n");
+                        ndev->stats.rx_dropped++;
+                        ndev->stats.rx_errors++;
+                        goto refill;
+                }
+
                 dma_unmap_single(kdev, dma_unmap_addr(cb, dma_addr),
                                  RX_BUF_LENGTH, DMA_FROM_DEVICE);
 
@@ -552,23 +571,11 @@ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
                 status = (rsb->rx_status_len >> DESC_STATUS_SHIFT) &
                           DESC_STATUS_MASK;
 
-                processed++;
-                priv->rx_read_ptr++;
-                if (priv->rx_read_ptr == priv->num_rx_bds)
-                        priv->rx_read_ptr = 0;
-
                 netif_dbg(priv, rx_status, ndev,
                           "p=%d, c=%d, rd_ptr=%d, len=%d, flag=0x%04x\n",
                           p_index, priv->rx_c_index, priv->rx_read_ptr,
                           len, status);
 
-                if (unlikely(!skb)) {
-                        netif_err(priv, rx_err, ndev, "out of memory!\n");
-                        ndev->stats.rx_dropped++;
-                        ndev->stats.rx_errors++;
-                        goto refill;
-                }
-
                 if (unlikely(!(status & DESC_EOP) || !(status & DESC_SOP))) {
                         netif_err(priv, rx_status, ndev, "fragmented packet!\n");
                         ndev->stats.rx_dropped++;
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index a12c65604f9d..e8c601d26c64 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -875,6 +875,7 @@ static void __bcmgenet_tx_reclaim(struct net_device *dev,
         int last_tx_cn, last_c_index, num_tx_bds;
         struct enet_cb *tx_cb_ptr;
         struct netdev_queue *txq;
+        unsigned int bds_compl;
         unsigned int c_index;
 
         /* Compute how many buffers are transmitted since last xmit call */
@@ -899,7 +900,9 @@ static void __bcmgenet_tx_reclaim(struct net_device *dev,
         /* Reclaim transmitted buffers */
         while (last_tx_cn-- > 0) {
                 tx_cb_ptr = ring->cbs + last_c_index;
+                bds_compl = 0;
                 if (tx_cb_ptr->skb) {
+                        bds_compl = skb_shinfo(tx_cb_ptr->skb)->nr_frags + 1;
                         dev->stats.tx_bytes += tx_cb_ptr->skb->len;
                         dma_unmap_single(&dev->dev,
                                          dma_unmap_addr(tx_cb_ptr, dma_addr),
@@ -916,7 +919,7 @@ static void __bcmgenet_tx_reclaim(struct net_device *dev,
                         dma_unmap_addr_set(tx_cb_ptr, dma_addr, 0);
                 }
                 dev->stats.tx_packets++;
-                ring->free_bds += 1;
+                ring->free_bds += bds_compl;
 
                 last_c_index++;
                 last_c_index &= (num_tx_bds - 1);
@@ -1274,12 +1277,29 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_priv *priv,
 
         while ((rxpktprocessed < rxpkttoprocess) &&
                (rxpktprocessed < budget)) {
+                cb = &priv->rx_cbs[priv->rx_read_ptr];
+                skb = cb->skb;
+
+                rxpktprocessed++;
+
+                priv->rx_read_ptr++;
+                priv->rx_read_ptr &= (priv->num_rx_bds - 1);
+
+                /* We do not have a backing SKB, so we do not have a
+                 * corresponding DMA mapping for this incoming packet since
+                 * bcmgenet_rx_refill always either has both skb and mapping or
+                 * none.
+                 */
+                if (unlikely(!skb)) {
+                        dev->stats.rx_dropped++;
+                        dev->stats.rx_errors++;
+                        goto refill;
+                }
+
                 /* Unmap the packet contents such that we can use the
                  * RSV from the 64 bytes descriptor when enabled and save
                  * a 32-bits register read
                  */
-                cb = &priv->rx_cbs[priv->rx_read_ptr];
-                skb = cb->skb;
                 dma_unmap_single(&dev->dev, dma_unmap_addr(cb, dma_addr),
                                  priv->rx_buf_len, DMA_FROM_DEVICE);
 
@@ -1307,18 +1327,6 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_priv *priv,
                           __func__, p_index, priv->rx_c_index,
                           priv->rx_read_ptr, dma_length_status);
 
-                rxpktprocessed++;
-
-                priv->rx_read_ptr++;
-                priv->rx_read_ptr &= (priv->num_rx_bds - 1);
-
-                /* out of memory, just drop packets at the hardware level */
-                if (unlikely(!skb)) {
-                        dev->stats.rx_dropped++;
-                        dev->stats.rx_errors++;
-                        goto refill;
-                }
-
                 if (unlikely(!(dma_flag & DMA_EOP) || !(dma_flag & DMA_SOP))) {
                         netif_err(priv, rx_status, dev,
                                   "dropping fragmented packet!\n");
@@ -1736,13 +1744,63 @@ static void bcmgenet_init_multiq(struct net_device *dev)
         bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
 }
 
+static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
+{
+        int ret = 0;
+        int timeout = 0;
+        u32 reg;
+
+        /* Disable TDMA to stop add more frames in TX DMA */
+        reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
+        reg &= ~DMA_EN;
+        bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
+
+        /* Check TDMA status register to confirm TDMA is disabled */
+        while (timeout++ < DMA_TIMEOUT_VAL) {
+                reg = bcmgenet_tdma_readl(priv, DMA_STATUS);
+                if (reg & DMA_DISABLED)
+                        break;
+
+                udelay(1);
+        }
+
+        if (timeout == DMA_TIMEOUT_VAL) {
+                netdev_warn(priv->dev, "Timed out while disabling TX DMA\n");
+                ret = -ETIMEDOUT;
+        }
+
+        /* Wait 10ms for packet drain in both tx and rx dma */
+        usleep_range(10000, 20000);
+
+        /* Disable RDMA */
+        reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
+        reg &= ~DMA_EN;
+        bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
+
+        timeout = 0;
+        /* Check RDMA status register to confirm RDMA is disabled */
+        while (timeout++ < DMA_TIMEOUT_VAL) {
+                reg = bcmgenet_rdma_readl(priv, DMA_STATUS);
+                if (reg & DMA_DISABLED)
+                        break;
+
+                udelay(1);
+        }
+
+        if (timeout == DMA_TIMEOUT_VAL) {
+                netdev_warn(priv->dev, "Timed out while disabling RX DMA\n");
+                ret = -ETIMEDOUT;
+        }
+
+        return ret;
+}
+
 static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
 {
         int i;
 
         /* disable DMA */
-        bcmgenet_rdma_writel(priv, 0, DMA_CTRL);
-        bcmgenet_tdma_writel(priv, 0, DMA_CTRL);
+        bcmgenet_dma_teardown(priv);
 
         for (i = 0; i < priv->num_tx_bds; i++) {
                 if (priv->tx_cbs[i].skb != NULL) {
@@ -2101,57 +2159,6 @@ err_clk_disable:
         return ret;
 }
 
-static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
-{
-        int ret = 0;
-        int timeout = 0;
-        u32 reg;
-
-        /* Disable TDMA to stop add more frames in TX DMA */
-        reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
-        reg &= ~DMA_EN;
-        bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
-
-        /* Check TDMA status register to confirm TDMA is disabled */
-        while (timeout++ < DMA_TIMEOUT_VAL) {
-                reg = bcmgenet_tdma_readl(priv, DMA_STATUS);
-                if (reg & DMA_DISABLED)
-                        break;
-
-                udelay(1);
-        }
-
-        if (timeout == DMA_TIMEOUT_VAL) {
-                netdev_warn(priv->dev, "Timed out while disabling TX DMA\n");
-                ret = -ETIMEDOUT;
-        }
-
-        /* Wait 10ms for packet drain in both tx and rx dma */
-        usleep_range(10000, 20000);
-
-        /* Disable RDMA */
-        reg = bcmgenet_rdma_readl(priv, DMA_CTRL);
-        reg &= ~DMA_EN;
-        bcmgenet_rdma_writel(priv, reg, DMA_CTRL);
-
-        timeout = 0;
-        /* Check RDMA status register to confirm RDMA is disabled */
-        while (timeout++ < DMA_TIMEOUT_VAL) {
-                reg = bcmgenet_rdma_readl(priv, DMA_STATUS);
-                if (reg & DMA_DISABLED)
-                        break;
-
-                udelay(1);
-        }
-
-        if (timeout == DMA_TIMEOUT_VAL) {
-                netdev_warn(priv->dev, "Timed out while disabling RX DMA\n");
-                ret = -ETIMEDOUT;
-        }
-
-        return ret;
-}
-
 static void bcmgenet_netif_stop(struct net_device *dev)
 {
         struct bcmgenet_priv *priv = netdev_priv(dev);
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index cb77ae93d89a..e7d3a620d96a 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -7914,8 +7914,6 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
         entry = tnapi->tx_prod;
         base_flags = 0;
-        if (skb->ip_summed == CHECKSUM_PARTIAL)
-                base_flags |= TXD_FLAG_TCPUDP_CSUM;
 
         mss = skb_shinfo(skb)->gso_size;
         if (mss) {
@@ -7929,6 +7927,13 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb) - ETH_HLEN;
 
+                /* HW/FW can not correctly segment packets that have been
+                 * vlan encapsulated.
+                 */
+                if (skb->protocol == htons(ETH_P_8021Q) ||
+                    skb->protocol == htons(ETH_P_8021AD))
+                        return tg3_tso_bug(tp, tnapi, txq, skb);
+
                 if (!skb_is_gso_v6(skb)) {
                         if (unlikely((ETH_HLEN + hdr_len) > 80) &&
                             tg3_flag(tp, TSO_BUG))
@@ -7979,6 +7984,17 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
                                 base_flags |= tsflags << 12;
                         }
                 }
+        } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+                /* HW/FW can not correctly checksum packets that have been
+                 * vlan encapsulated.
+                 */
+                if (skb->protocol == htons(ETH_P_8021Q) ||
+                    skb->protocol == htons(ETH_P_8021AD)) {
+                        if (skb_checksum_help(skb))
+                                goto drop;
+                } else  {
+                        base_flags |= TXD_FLAG_TCPUDP_CSUM;
+                }
         }
 
         if (tg3_flag(tp, USE_JUMBO_BDFLAG) &&
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index f56b95af3fcf..eeec49540233 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -6478,6 +6478,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         struct port_info *pi;
         bool highdma = false;
         struct adapter *adapter = NULL;
+        void __iomem *regs;
 
         printk_once(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
 
@@ -6494,19 +6495,35 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 goto out_release_regions;
         }
 
+        regs = pci_ioremap_bar(pdev, 0);
+        if (!regs) {
+                dev_err(&pdev->dev, "cannot map device registers\n");
+                err = -ENOMEM;
+                goto out_disable_device;
+        }
+
+        /* We control everything through one PF */
+        func = SOURCEPF_GET(readl(regs + PL_WHOAMI));
+        if (func != ent->driver_data) {
+                iounmap(regs);
+                pci_disable_device(pdev);
+                pci_save_state(pdev);        /* to restore SR-IOV later */
+                goto sriov;
+        }
+
         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
                 highdma = true;
                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
                 if (err) {
                         dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
                                 "coherent allocations\n");
-                        goto out_disable_device;
+                        goto out_unmap_bar0;
                 }
         } else {
                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
                 if (err) {
                         dev_err(&pdev->dev, "no usable DMA configuration\n");
-                        goto out_disable_device;
+                        goto out_unmap_bar0;
                 }
         }
 
@@ -6518,7 +6535,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
         if (!adapter) {
                 err = -ENOMEM;
-                goto out_disable_device;
+                goto out_unmap_bar0;
         }
 
         adapter->workq = create_singlethread_workqueue("cxgb4");
@@ -6530,20 +6547,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         /* PCI device has been enabled */
         adapter->flags |= DEV_ENABLED;
 
-        adapter->regs = pci_ioremap_bar(pdev, 0);
-        if (!adapter->regs) {
-                dev_err(&pdev->dev, "cannot map device registers\n");
-                err = -ENOMEM;
-                goto out_free_adapter;
-        }
-
-        /* We control everything through one PF */
-        func = SOURCEPF_GET(readl(adapter->regs + PL_WHOAMI));
-        if (func != ent->driver_data) {
-                pci_save_state(pdev);        /* to restore SR-IOV later */
-                goto sriov;
-        }
-
+        adapter->regs = regs;
         adapter->pdev = pdev;
         adapter->pdev_dev = &pdev->dev;
         adapter->mbox = func;
@@ -6560,7 +6564,8 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         err = t4_prep_adapter(adapter);
         if (err)
-                goto out_unmap_bar0;
+                goto out_free_adapter;
+
 
         if (!is_t4(adapter->params.chip)) {
                 s_qpp = QUEUESPERPAGEPF1 * adapter->fn;
@@ -6577,14 +6582,14 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                         dev_err(&pdev->dev,
                                 "Incorrect number of egress queues per page\n");
                         err = -EINVAL;
-                        goto out_unmap_bar0;
+                        goto out_free_adapter;
                 }
                 adapter->bar2 = ioremap_wc(pci_resource_start(pdev, 2),
                 pci_resource_len(pdev, 2));
                 if (!adapter->bar2) {
                         dev_err(&pdev->dev, "cannot map device bar2 region\n");
                         err = -ENOMEM;
-                        goto out_unmap_bar0;
+                        goto out_free_adapter;
                 }
         }
 
@@ -6722,13 +6727,13 @@ sriov:
  out_unmap_bar:
         if (!is_t4(adapter->params.chip))
                 iounmap(adapter->bar2);
- out_unmap_bar0:
-        iounmap(adapter->regs);
  out_free_adapter:
         if (adapter->workq)
                 destroy_workqueue(adapter->workq);
 
         kfree(adapter);
+ out_unmap_bar0:
+        iounmap(regs);
  out_disable_device:
         pci_disable_pcie_error_reporting(pdev);
         pci_disable_device(pdev);
diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 9b33057a9477..70089c29d307 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -1399,7 +1399,7 @@ static struct dm9000_plat_data *dm9000_parse_dt(struct device *dev)
         const void *mac_addr;
 
         if (!IS_ENABLED(CONFIG_OF) || !np)
-                return NULL;
+                return ERR_PTR(-ENXIO);
 
         pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
         if (!pdata)
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index 65a4a0f88ea0..02a2e90d581a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -2389,6 +2389,22 @@ struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
 }
 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
 
+static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
+{
+        struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
+        int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
+                        + 1;
+        int max_port = min_port +
+                bitmap_weight(actv_ports.ports, dev->caps.num_ports);
+
+        if (port < min_port)
+                port = min_port;
+        else if (port >= max_port)
+                port = max_port - 1;
+
+        return port;
+}
+
 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
 {
         struct mlx4_priv *priv = mlx4_priv(dev);
@@ -2402,6 +2418,7 @@ int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
         if (slave < 0)
                 return -EINVAL;
 
+        port = mlx4_slaves_closest_port(dev, slave, port);
         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
         s_info->mac = mac;
         mlx4_info(dev, "default mac on vf %d port %d to %llX will take afect only after vf restart\n",
@@ -2428,6 +2445,7 @@ int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos)
         if (slave < 0)
                 return -EINVAL;
 
+        port = mlx4_slaves_closest_port(dev, slave, port);
         vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
 
         if ((0 == vlan) && (0 == qos))
@@ -2455,6 +2473,7 @@ bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave,
         struct mlx4_priv *priv;
 
         priv = mlx4_priv(dev);
+        port = mlx4_slaves_closest_port(dev, slave, port);
         vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
 
         if (MLX4_VGT != vp_oper->state.default_vlan) {
@@ -2482,6 +2501,7 @@ int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
         if (slave < 0)
                 return -EINVAL;
 
+        port = mlx4_slaves_closest_port(dev, slave, port);
         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
         s_info->spoofchk = setting;
 
@@ -2535,6 +2555,7 @@ int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_stat
         if (slave < 0)
                 return -EINVAL;
 
+        port = mlx4_slaves_closest_port(dev, slave, port);
         switch (link_state) {
         case IFLA_VF_LINK_STATE_AUTO:
                 /* get current link state */
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index e22f24f784fc..35ff2925110a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -487,6 +487,9 @@ static int mlx4_en_set_pauseparam(struct net_device *dev,
         struct mlx4_en_dev *mdev = priv->mdev;
         int err;
 
+        if (pause->autoneg)
+                return -EINVAL;
+
         priv->prof->tx_pause = pause->tx_pause != 0;
         priv->prof->rx_pause = pause->rx_pause != 0;
         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 0dc31d85fc3b..2301365c79c7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -390,13 +390,14 @@ err_icm:
 EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
 
 #define MLX4_UPDATE_QP_SUPPORTED_ATTRS MLX4_UPDATE_QP_SMAC
-int mlx4_update_qp(struct mlx4_dev *dev, struct mlx4_qp *qp,
+int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
                    enum mlx4_update_qp_attr attr,
                    struct mlx4_update_qp_params *params)
 {
         struct mlx4_cmd_mailbox *mailbox;
         struct mlx4_update_qp_context *cmd;
         u64 pri_addr_path_mask = 0;
+        u64 qp_mask = 0;
         int err = 0;
 
         mailbox = mlx4_alloc_cmd_mailbox(dev);
@@ -413,9 +414,16 @@ int mlx4_update_qp(struct mlx4_dev *dev, struct mlx4_qp *qp,
                 cmd->qp_context.pri_path.grh_mylmc = params->smac_index;
         }
 
+        if (attr & MLX4_UPDATE_QP_VSD) {
+                qp_mask |= 1ULL << MLX4_UPD_QP_MASK_VSD;
+                if (params->flags & MLX4_UPDATE_QP_PARAMS_FLAGS_VSD_ENABLE)
+                        cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN);
+        }
+
         cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask);
+        cmd->qp_mask = cpu_to_be64(qp_mask);
 
-        err = mlx4_cmd(dev, mailbox->dma, qp->qpn & 0xffffff, 0,
+        err = mlx4_cmd(dev, mailbox->dma, qpn & 0xffffff, 0,
                        MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A,
                        MLX4_CMD_NATIVE);
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 1089367fed22..5d2498dcf536 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -702,11 +702,13 @@ static int update_vport_qp_param(struct mlx4_dev *dev,
         struct mlx4_qp_context  *qpc = inbox->buf + 8;
         struct mlx4_vport_oper_state *vp_oper;
         struct mlx4_priv *priv;
+        u32 qp_type;
         int port;
 
         port = (qpc->pri_path.sched_queue & 0x40) ? 2 : 1;
         priv = mlx4_priv(dev);
         vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
+        qp_type = (be32_to_cpu(qpc->flags) >> 16) & 0xff;
 
         if (MLX4_VGT != vp_oper->state.default_vlan) {
                 /* the reserved QPs (special, proxy, tunnel)
@@ -715,8 +717,20 @@ static int update_vport_qp_param(struct mlx4_dev *dev,
                 if (mlx4_is_qp_reserved(dev, qpn))
                         return 0;
 
-                /* force strip vlan by clear vsd */
-                qpc->param3 &= ~cpu_to_be32(MLX4_STRIP_VLAN);
+                /* force strip vlan by clear vsd, MLX QP refers to Raw Ethernet */
+                if (qp_type == MLX4_QP_ST_UD ||
+                    (qp_type == MLX4_QP_ST_MLX && mlx4_is_eth(dev, port))) {
+                        if (dev->caps.bmme_flags & MLX4_BMME_FLAG_VSD_INIT2RTR) {
+                                *(__be32 *)inbox->buf =
+                                        cpu_to_be32(be32_to_cpu(*(__be32 *)inbox->buf) |
+                                        MLX4_QP_OPTPAR_VLAN_STRIPPING);
+                                qpc->param3 &= ~cpu_to_be32(MLX4_STRIP_VLAN);
+                        } else {
+                                struct mlx4_update_qp_params params = {.flags = 0};
+
+                                mlx4_update_qp(dev, qpn, MLX4_UPDATE_QP_VSD, &params);
+                        }
+                }
 
                 if (vp_oper->state.link_state == IFLA_VF_LINK_STATE_DISABLE &&
                     dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP) {
@@ -3998,13 +4012,17 @@ int mlx4_UPDATE_QP_wrapper(struct mlx4_dev *dev, int slave,
         }
 
         port = (rqp->sched_queue >> 6 & 1) + 1;
-        smac_index = cmd->qp_context.pri_path.grh_mylmc;
-        err = mac_find_smac_ix_in_slave(dev, slave, port,
-                                        smac_index, &mac);
-        if (err) {
-                mlx4_err(dev, "Failed to update qpn 0x%x, MAC is invalid. smac_ix: %d\n",
-                         qpn, smac_index);
-                goto err_mac;
+
+        if (pri_addr_path_mask & (1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX)) {
+                smac_index = cmd->qp_context.pri_path.grh_mylmc;
+                err = mac_find_smac_ix_in_slave(dev, slave, port,
+                                                smac_index, &mac);
+
+                if (err) {
+                        mlx4_err(dev, "Failed to update qpn 0x%x, MAC is invalid. smac_ix: %d\n",
+                                 qpn, smac_index);
+                        goto err_mac;
+                }
         }
 
         err = mlx4_cmd(dev, inbox->dma,
@@ -4818,7 +4836,7 @@ void mlx4_vf_immed_vlan_work_handler(struct work_struct *_work)
                         MLX4_VLAN_CTRL_ETH_RX_BLOCK_UNTAGGED;
 
         upd_context = mailbox->buf;
-        upd_context->qp_mask = cpu_to_be64(MLX4_UPD_QP_MASK_VSD);
+        upd_context->qp_mask = cpu_to_be64(1ULL << MLX4_UPD_QP_MASK_VSD);
 
         spin_lock_irq(mlx4_tlock(dev));
         list_for_each_entry_safe(qp, tmp, qp_list, com.list) {
diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c
index 979c6980639f..a42293092ea4 100644
--- a/drivers/net/ethernet/octeon/octeon_mgmt.c
+++ b/drivers/net/ethernet/octeon/octeon_mgmt.c
@@ -290,9 +290,11 @@ static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
                 /* Read the hardware TX timestamp if one was recorded */
                 if (unlikely(re.s.tstamp)) {
                         struct skb_shared_hwtstamps ts;
+                        u64 ns;
+
                         memset(&ts, 0, sizeof(ts));
                         /* Read the timestamp */
-                        u64 ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
+                        ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
                         /* Remove the timestamp from the FIFO */
                         cvmx_write_csr(CVMX_MIXX_TSCTL(p->port), 0);
                         /* Tell the kernel about the timestamp */
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
index 44c8be1c6805..5f7a35212796 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
@@ -7,6 +7,7 @@ config PCH_GBE
         depends on PCI && (X86_32 || COMPILE_TEST)
         select MII
         select PTP_1588_CLOCK_PCH
+        select NET_PTP_CLASSIFY
         ---help---
           This is a gigabit ethernet driver for EG20T PCH.
           EG20T PCH is the platform controller hub that is used in Intel's
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 02dd92ac1764..1d81238fcb93 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1847,33 +1847,31 @@ static void __rtl8169_set_features(struct net_device *dev,
                                    netdev_features_t features)
 {
         struct rtl8169_private *tp = netdev_priv(dev);
-        netdev_features_t changed = features ^ dev->features;
         void __iomem *ioaddr = tp->mmio_addr;
+        u32 rx_config;
 
-        if (!(changed & (NETIF_F_RXALL | NETIF_F_RXCSUM |
-                         NETIF_F_HW_VLAN_CTAG_RX)))
-                return;
+        rx_config = RTL_R32(RxConfig);
+        if (features & NETIF_F_RXALL)
+                rx_config |= (AcceptErr | AcceptRunt);
+        else
+                rx_config &= ~(AcceptErr | AcceptRunt);
 
-        if (changed & (NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX)) {
-                if (features & NETIF_F_RXCSUM)
-                        tp->cp_cmd |= RxChkSum;
-                else
-                        tp->cp_cmd &= ~RxChkSum;
+        RTL_W32(RxConfig, rx_config);
 
-                if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
-                        tp->cp_cmd |= RxVlan;
-                else
-                        tp->cp_cmd &= ~RxVlan;
+        if (features & NETIF_F_RXCSUM)
+                tp->cp_cmd |= RxChkSum;
+        else
+                tp->cp_cmd &= ~RxChkSum;
 
-                RTL_W16(CPlusCmd, tp->cp_cmd);
-                RTL_R16(CPlusCmd);
-        }
-        if (changed & NETIF_F_RXALL) {
-                int tmp = (RTL_R32(RxConfig) & ~(AcceptErr | AcceptRunt));
-                if (features & NETIF_F_RXALL)
-                        tmp |= (AcceptErr | AcceptRunt);
-                RTL_W32(RxConfig, tmp);
-        }
+        if (features & NETIF_F_HW_VLAN_CTAG_RX)
+                tp->cp_cmd |= RxVlan;
+        else
+                tp->cp_cmd &= ~RxVlan;
+
+        tp->cp_cmd |= RTL_R16(CPlusCmd) & ~(RxVlan | RxChkSum);
+
+        RTL_W16(CPlusCmd, tp->cp_cmd);
+        RTL_R16(CPlusCmd);
 }
 
 static int rtl8169_set_features(struct net_device *dev,
@@ -1881,8 +1879,11 @@ static int rtl8169_set_features(struct net_device *dev,
 {
         struct rtl8169_private *tp = netdev_priv(dev);
 
+        features &= NETIF_F_RXALL | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX;
+
         rtl_lock_work(tp);
-        __rtl8169_set_features(dev, features);
+        if (features ^ dev->features)
+                __rtl8169_set_features(dev, features);
         rtl_unlock_work(tp);
 
         return 0;
@@ -7531,8 +7532,7 @@ static void rtl_hw_initialize(struct rtl8169_private *tp)
         }
 }
 
-static int
-rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
         const unsigned int region = cfg->region;
@@ -7607,7 +7607,7 @@ rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 goto err_out_mwi_2;
         }
 
-        tp->cp_cmd = RxChkSum;
+        tp->cp_cmd = 0;
 
         if ((sizeof(dma_addr_t) > 4) &&
             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && use_dac) {
@@ -7648,13 +7648,6 @@ rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         pci_set_master(pdev);
 
-        /*
-         * Pretend we are using VLANs; This bypasses a nasty bug where
-         * Interrupts stop flowing on high load on 8110SCd controllers.
-         */
-        if (tp->mac_version == RTL_GIGA_MAC_VER_05)
-                tp->cp_cmd |= RxVlan;
-
         rtl_init_mdio_ops(tp);
         rtl_init_pll_power_ops(tp);
         rtl_init_jumbo_ops(tp);
@@ -7738,8 +7731,14 @@ rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
                 NETIF_F_HIGHDMA;
 
+        tp->cp_cmd |= RxChkSum | RxVlan;
+
+        /*
+         * Pretend we are using VLANs; This bypasses a nasty bug where
+         * Interrupts stop flowing on high load on 8110SCd controllers.
+         */
         if (tp->mac_version == RTL_GIGA_MAC_VER_05)
-                /* 8110SCd requires hardware Rx VLAN - disallow toggling */
+                /* Disallow toggling */
                 dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
 
         if (tp->txd_version == RTL_TD_0)
diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
index 0537381cd2f6..6859437b59fb 100644
--- a/drivers/net/ethernet/sfc/farch.c
+++ b/drivers/net/ethernet/sfc/farch.c
@@ -2933,6 +2933,9 @@ void efx_farch_filter_sync_rx_mode(struct efx_nic *efx)
         u32 crc;
         int bit;
 
+        if (!efx_dev_registered(efx))
+                return;
+
         netif_addr_lock_bh(net_dev);
 
         efx->unicast_filter = !(net_dev->flags & IFF_PROMISC);
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 763cdfc228be..edb860947da4 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -360,14 +360,17 @@ static int vnet_walk_rx_one(struct vnet_port *port,
         if (IS_ERR(desc))
                 return PTR_ERR(desc);
 
+        if (desc->hdr.state != VIO_DESC_READY)
+                return 1;
+
+        rmb();
+
         viodbg(DATA, "vio_walk_rx_one desc[%02x:%02x:%08x:%08x:%llx:%llx]\n",
                desc->hdr.state, desc->hdr.ack,
                desc->size, desc->ncookies,
                desc->cookies[0].cookie_addr,
                desc->cookies[0].cookie_size);
 
-        if (desc->hdr.state != VIO_DESC_READY)
-                return 1;
         err = vnet_rx_one(port, desc->size, desc->cookies, desc->ncookies);
         if (err == -ECONNRESET)
                 return err;
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 5c3f1f3ad16f..45ba50e4eaec 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -701,6 +701,28 @@ static void cpsw_rx_handler(void *token, int len, int status)
         cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
 
         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
+                bool ndev_status = false;
+                struct cpsw_slave *slave = priv->slaves;
+                int n;
+
+                if (priv->data.dual_emac) {
+                        /* In dual emac mode check for all interfaces */
+                        for (n = priv->data.slaves; n; n--, slave++)
+                                if (netif_running(slave->ndev))
+                                        ndev_status = true;
+                }
+
+                if (ndev_status && (status >= 0)) {
+                        /* The packet received is for the interface which
+                         * is already down and the other interface is up
+                         * and running, intead of freeing which results
+                         * in reducing of the number of rx descriptor in
+                         * DMA engine, requeue skb back to cpdma.
+                         */
+                        new_skb = skb;
+                        goto requeue;
+                }
+
                 /* the interface is going down, skbs are purged */
                 dev_kfree_skb_any(skb);
                 return;
@@ -719,6 +741,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
                 new_skb = skb;
         }
 
+requeue:
         ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
                         skb_tailroom(new_skb), 0);
         if (WARN_ON(ret < 0))
@@ -2354,10 +2377,19 @@ static int cpsw_suspend(struct device *dev)
         struct net_device       *ndev = platform_get_drvdata(pdev);
         struct cpsw_priv        *priv = netdev_priv(ndev);
 
-        if (netif_running(ndev))
-                cpsw_ndo_stop(ndev);
+        if (priv->data.dual_emac) {
+                int i;
 
-        for_each_slave(priv, soft_reset_slave);
+                for (i = 0; i < priv->data.slaves; i++) {
+                        if (netif_running(priv->slaves[i].ndev))
+                                cpsw_ndo_stop(priv->slaves[i].ndev);
+                        soft_reset_slave(priv->slaves + i);
+                }
+        } else {
+                if (netif_running(ndev))
+                        cpsw_ndo_stop(ndev);
+                for_each_slave(priv, soft_reset_slave);
+        }
 
         pm_runtime_put_sync(&pdev->dev);
 
@@ -2371,14 +2403,24 @@ static int cpsw_resume(struct device *dev)
 {
         struct platform_device  *pdev = to_platform_device(dev);
         struct net_device       *ndev = platform_get_drvdata(pdev);
+        struct cpsw_priv        *priv = netdev_priv(ndev);
 
         pm_runtime_get_sync(&pdev->dev);
 
         /* Select default pin state */
         pinctrl_pm_select_default_state(&pdev->dev);
 
-        if (netif_running(ndev))
-                cpsw_ndo_open(ndev);
+        if (priv->data.dual_emac) {
+                int i;
+
+                for (i = 0; i < priv->data.slaves; i++) {
+                        if (netif_running(priv->slaves[i].ndev))
+                                cpsw_ndo_open(priv->slaves[i].ndev);
+                }
+        } else {
+                if (netif_running(ndev))
+                        cpsw_ndo_open(ndev);
+        }
         return 0;
 }