Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

S390 bpf_jit.S is removed in net-next and had changes in 'net',
since that code isn't used any more take the removal.

TLS data structures split the TX and RX components in 'net-next',
put the new struct members from the bug fix in 'net' into the RX
part.

The 'net-next' tree had some reworking of how the ERSPAN code works in
the GRE tunneling code, overlapping with a one-line headroom
calculation fix in 'net'.

Overlapping changes in __sock_map_ctx_update_elem(), keep the bits
that read the prog members via READ_ONCE() into local variables
before using them.

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

2 files changed, 52 insertions, 28 deletions

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 2234a334e96e..e454dfc9ad8f 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -369,6 +369,11 @@ vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
 
 	gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
 	while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) {
+		/* Prevent any &gdesc->tcd field from being (speculatively)
+		 * read before (&gdesc->tcd)->gen is read.
+		 */
+		dma_rmb();
+
 		completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX(
 					       &gdesc->tcd), tq, adapter->pdev,
 					       adapter);
@@ -1103,6 +1108,11 @@ vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
 		gdesc->txd.tci = skb_vlan_tag_get(skb);
 	}
 
+	/* Ensure that the write to (&gdesc->txd)->gen will be observed after
+	 * all other writes to &gdesc->txd.
+	 */
+	dma_wmb();
+
 	/* finally flips the GEN bit of the SOP desc. */
 	gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^
 						  VMXNET3_TXD_GEN);
@@ -1298,6 +1308,12 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
 			 */
 			break;
 		}
+
+		/* Prevent any rcd field from being (speculatively) read before
+		 * rcd->gen is read.
+		 */
+		dma_rmb();
+
 		BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2 &&
 		       rcd->rqID != rq->dataRingQid);
 		idx = rcd->rxdIdx;
@@ -1528,6 +1544,12 @@ rcd_done:
 		ring->next2comp = idx;
 		num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring);
 		ring = rq->rx_ring + ring_idx;
+
+		/* Ensure that the writes to rxd->gen bits will be observed
+		 * after all other writes to rxd objects.
+		 */
+		dma_wmb();
+
 		while (num_to_alloc) {
 			vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd,
 					  &rxCmdDesc);
@@ -2688,7 +2710,7 @@ vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
 /* ==================== initialization and cleanup routines ============ */
 
 static int
-vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64)
+vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter)
 {
 	int err;
 	unsigned long mmio_start, mmio_len;
@@ -2700,30 +2722,12 @@ vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64)
 		return err;
 	}
 
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
-		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
-			dev_err(&pdev->dev,
-				"pci_set_consistent_dma_mask failed\n");
-			err = -EIO;
-			goto err_set_mask;
-		}
-		*dma64 = true;
-	} else {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
-			dev_err(&pdev->dev,
-				"pci_set_dma_mask failed\n");
-			err = -EIO;
-			goto err_set_mask;
-		}
-		*dma64 = false;
-	}
-
 	err = pci_request_selected_regions(pdev, (1 << 2) - 1,
 					   vmxnet3_driver_name);
 	if (err) {
 		dev_err(&pdev->dev,
 			"Failed to request region for adapter: error %d\n", err);
-		goto err_set_mask;
+		goto err_enable_device;
 	}
 
 	pci_set_master(pdev);
@@ -2751,7 +2755,7 @@ err_bar1:
 	iounmap(adapter->hw_addr0);
 err_ioremap:
 	pci_release_selected_regions(pdev, (1 << 2) - 1);
-err_set_mask:
+err_enable_device:
 	pci_disable_device(pdev);
 	return err;
 }
@@ -3254,7 +3258,7 @@ vmxnet3_probe_device(struct pci_dev *pdev,
 #endif
 	};
 	int err;
-	bool dma64 = false; /* stupid gcc */
+	bool dma64;
 	u32 ver;
 	struct net_device *netdev;
 	struct vmxnet3_adapter *adapter;
@@ -3300,6 +3304,24 @@ vmxnet3_probe_device(struct pci_dev *pdev,
 	adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE;
 	adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE;
 
+	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
+		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
+			dev_err(&pdev->dev,
+				"pci_set_consistent_dma_mask failed\n");
+			err = -EIO;
+			goto err_set_mask;
+		}
+		dma64 = true;
+	} else {
+		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
+			dev_err(&pdev->dev,
+				"pci_set_dma_mask failed\n");
+			err = -EIO;
+			goto err_set_mask;
+		}
+		dma64 = false;
+	}
+
 	spin_lock_init(&adapter->cmd_lock);
 	adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter,
 					     sizeof(struct vmxnet3_adapter),
@@ -3307,7 +3329,7 @@ vmxnet3_probe_device(struct pci_dev *pdev,
 	if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) {
 		dev_err(&pdev->dev, "Failed to map dma\n");
 		err = -EFAULT;
-		goto err_dma_map;
+		goto err_set_mask;
 	}
 	adapter->shared = dma_alloc_coherent(
 				&adapter->pdev->dev,
@@ -3358,7 +3380,7 @@ vmxnet3_probe_device(struct pci_dev *pdev,
 	}
 #endif /* VMXNET3_RSS */
 
-	err = vmxnet3_alloc_pci_resources(adapter, &dma64);
+	err = vmxnet3_alloc_pci_resources(adapter);
 	if (err < 0)
 		goto err_alloc_pci;
 
@@ -3504,7 +3526,7 @@ err_alloc_queue_desc:
 err_alloc_shared:
 	dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa,
 			 sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE);
-err_dma_map:
+err_set_mask:
 	free_netdev(netdev);
 	return err;
 }
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index a3326463b71f..a2c554f8a61b 100644
--- a/drivers/net/vmxnet3/vmxnet3_int.h
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -69,10 +69,12 @@
 /*
  * Version numbers
  */
-#define VMXNET3_DRIVER_VERSION_STRING   "1.4.14.0-k"
+#define VMXNET3_DRIVER_VERSION_STRING   "1.4.16.0-k"
 
-/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
-#define VMXNET3_DRIVER_VERSION_NUM      0x01040e00
+/* Each byte of this 32-bit integer encodes a version number in
+ * VMXNET3_DRIVER_VERSION_STRING.
+ */
+#define VMXNET3_DRIVER_VERSION_NUM      0x01041000
 
 #if defined(CONFIG_PCI_MSI)
 	/* RSS only makes sense if MSI-X is supported. */