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

Pull networking updates from David Miller:
 "Highlights:

   - Gustavo A. R. Silva keeps working on the implicit switch fallthru
     changes.

   - Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
     Luca Coelho.

   - Re-enable ASPM in r8169, from Kai-Heng Feng.

   - Add virtual XFRM interfaces, which avoids all of the limitations of
     existing IPSEC tunnels. From Steffen Klassert.

   - Convert GRO over to use a hash table, so that when we have many
     flows active we don't traverse a long list during accumluation.

   - Many new self tests for routing, TC, tunnels, etc. Too many
     contributors to mention them all, but I'm really happy to keep
     seeing this stuff.

   - Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.

   - Lots of cleanups and fixes in L2TP code from Guillaume Nault.

   - Add IPSEC offload support to netdevsim, from Shannon Nelson.

   - Add support for slotting with non-uniform distribution to netem
     packet scheduler, from Yousuk Seung.

   - Add UDP GSO support to mlx5e, from Boris Pismenny.

   - Support offloading of Team LAG in NFP, from John Hurley.

   - Allow to configure TX queue selection based upon RX queue, from
     Amritha Nambiar.

   - Support ethtool ring size configuration in aquantia, from Anton
     Mikaev.

   - Support DSCP and flowlabel per-transport in SCTP, from Xin Long.

   - Support list based batching and stack traversal of SKBs, this is
     very exciting work. From Edward Cree.

   - Busyloop optimizations in vhost_net, from Toshiaki Makita.

   - Introduce the ETF qdisc, which allows time based transmissions. IGB
     can offload this in hardware. From Vinicius Costa Gomes.

   - Add parameter support to devlink, from Moshe Shemesh.

   - Several multiplication and division optimizations for BPF JIT in
     nfp driver, from Jiong Wang.

   - Lots of prepatory work to make more of the packet scheduler layer
     lockless, when possible, from Vlad Buslov.

   - Add ACK filter and NAT awareness to sch_cake packet scheduler, from
     Toke Høiland-Jørgensen.

   - Support regions and region snapshots in devlink, from Alex Vesker.

   - Allow to attach XDP programs to both HW and SW at the same time on
     a given device, with initial support in nfp. From Jakub Kicinski.

   - Add TLS RX offload and support in mlx5, from Ilya Lesokhin.

   - Use PHYLIB in r8169 driver, from Heiner Kallweit.

   - All sorts of changes to support Spectrum 2 in mlxsw driver, from
     Ido Schimmel.

   - PTP support in mv88e6xxx DSA driver, from Andrew Lunn.

   - Make TCP_USER_TIMEOUT socket option more accurate, from Jon
     Maxwell.

   - Support for templates in packet scheduler classifier, from Jiri
     Pirko.

   - IPV6 support in RDS, from Ka-Cheong Poon.

   - Native tproxy support in nf_tables, from Máté Eckl.

   - Maintain IP fragment queue in an rbtree, but optimize properly for
     in-order frags. From Peter Oskolkov.

   - Improvde handling of ACKs on hole repairs, from Yuchung Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
  bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
  hv/netvsc: Fix NULL dereference at single queue mode fallback
  net: filter: mark expected switch fall-through
  xen-netfront: fix warn message as irq device name has '/'
  cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
  net: dsa: mv88e6xxx: missing unlock on error path
  rds: fix building with IPV6=m
  inet/connection_sock: prefer _THIS_IP_ to current_text_addr
  net: dsa: mv88e6xxx: bitwise vs logical bug
  net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
  ieee802154: hwsim: using right kind of iteration
  net: hns3: Add vlan filter setting by ethtool command -K
  net: hns3: Set tx ring' tc info when netdev is up
  net: hns3: Remove tx ring BD len register in hns3_enet
  net: hns3: Fix desc num set to default when setting channel
  net: hns3: Fix for phy link issue when using marvell phy driver
  net: hns3: Fix for information of phydev lost problem when down/up
  net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
  net: hns3: Add support for serdes loopback selftest
  bnxt_en: take coredump_record structure off stack
  ...

1 files changed, 64 insertions, 48 deletions

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
index 2a0c06e0f730..42f1f518dad6 100644
--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
@@ -70,7 +70,8 @@
 #define XEL_TSR_XMIT_IE_MASK	 0x00000008	/* Tx interrupt enable bit */
 #define XEL_TSR_XMIT_ACTIVE_MASK 0x80000000	/* Buffer is active, SW bit
 						 * only. This is not documented
-						 * in the HW spec */
+						 * in the HW spec
+						 */
 
 /* Define for programming the MAC address into the EmacLite */
 #define XEL_TSR_PROG_MAC_ADDR	(XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_PROGRAM_MASK)
@@ -94,11 +95,11 @@
 
 
 
-#define TX_TIMEOUT		(60*HZ)		/* Tx timeout is 60 seconds. */
+#define TX_TIMEOUT		(60 * HZ)	/* Tx timeout is 60 seconds. */
 #define ALIGNMENT		4
 
 /* BUFFER_ALIGN(adr) calculates the number of bytes to the next alignment. */
-#define BUFFER_ALIGN(adr) ((ALIGNMENT - ((u32) adr)) % ALIGNMENT)
+#define BUFFER_ALIGN(adr) ((ALIGNMENT - ((u32)adr)) % ALIGNMENT)
 
 #ifdef __BIG_ENDIAN
 #define xemaclite_readl		ioread32be
@@ -238,8 +239,8 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
 
 		/* Set up to output the remaining data */
 		align_buffer = 0;
-		to_u8_ptr = (u8 *) &align_buffer;
-		from_u8_ptr = (u8 *) from_u16_ptr;
+		to_u8_ptr = (u8 *)&align_buffer;
+		from_u8_ptr = (u8 *)from_u16_ptr;
 
 		/* Output the remaining data */
 		for (; length > 0; length--)
@@ -272,7 +273,7 @@ static void xemaclite_aligned_read(u32 *src_ptr, u8 *dest_ptr,
 	u32 align_buffer;
 
 	from_u32_ptr = src_ptr;
-	to_u16_ptr = (u16 *) dest_ptr;
+	to_u16_ptr = (u16 *)dest_ptr;
 
 	for (; length > 3; length -= 4) {
 		/* Copy each word into the temporary buffer */
@@ -288,9 +289,9 @@ static void xemaclite_aligned_read(u32 *src_ptr, u8 *dest_ptr,
 		u8 *to_u8_ptr, *from_u8_ptr;
 
 		/* Set up to read the remaining data */
-		to_u8_ptr = (u8 *) to_u16_ptr;
+		to_u8_ptr = (u8 *)to_u16_ptr;
 		align_buffer = *from_u32_ptr++;
-		from_u8_ptr = (u8 *) &align_buffer;
+		from_u8_ptr = (u8 *)&align_buffer;
 
 		/* Read the remaining data */
 		for (; length > 0; length--)
@@ -336,7 +337,8 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
 			drvdata->next_tx_buf_to_use ^= XEL_BUFFER_OFFSET;
 	} else if (drvdata->tx_ping_pong != 0) {
 		/* If the expected buffer is full, try the other buffer,
-		 * if it is configured in HW */
+		 * if it is configured in HW
+		 */
 
 		addr = (void __iomem __force *)((u32 __force)addr ^
 						 XEL_BUFFER_OFFSET);
@@ -349,7 +351,7 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
 		return -1; /* Buffer was full, return failure */
 
 	/* Write the frame to the buffer */
-	xemaclite_aligned_write(data, (u32 __force *) addr, byte_count);
+	xemaclite_aligned_write(data, (u32 __force *)addr, byte_count);
 
 	xemaclite_writel((byte_count & XEL_TPLR_LENGTH_MASK),
 			 addr + XEL_TPLR_OFFSET);
@@ -357,7 +359,8 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
 	/* Update the Tx Status Register to indicate that there is a
 	 * frame to send. Set the XEL_TSR_XMIT_ACTIVE_MASK flag which
 	 * is used by the interrupt handler to check whether a frame
-	 * has been transmitted */
+	 * has been transmitted
+	 */
 	reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET);
 	reg_data |= (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_XMIT_ACTIVE_MASK);
 	xemaclite_writel(reg_data, addr + XEL_TSR_OFFSET);
@@ -369,6 +372,7 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
  * xemaclite_recv_data - Receive a frame
  * @drvdata:	Pointer to the Emaclite device private data
  * @data:	Address where the data is to be received
+ * @maxlen:    Maximum supported ethernet packet length
  *
  * This function is intended to be called from the interrupt context or
  * with a wrapper which waits for the receive frame to be available.
@@ -394,7 +398,8 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
 		/* The instance is out of sync, try other buffer if other
 		 * buffer is configured, return 0 otherwise. If the instance is
 		 * out of sync, do not update the 'next_rx_buf_to_use' since it
-		 * will correct on subsequent calls */
+		 * will correct on subsequent calls
+		 */
 		if (drvdata->rx_ping_pong != 0)
 			addr = (void __iomem __force *)((u32 __force)addr ^
 							 XEL_BUFFER_OFFSET);
@@ -408,13 +413,15 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
 			return 0;	/* No data was available */
 	}
 
-	/* Get the protocol type of the ethernet frame that arrived */
+	/* Get the protocol type of the ethernet frame that arrived
+	 */
 	proto_type = ((ntohl(xemaclite_readl(addr + XEL_HEADER_OFFSET +
 			XEL_RXBUFF_OFFSET)) >> XEL_HEADER_SHIFT) &
 			XEL_RPLR_LENGTH_MASK);
 
 	/* Check if received ethernet frame is a raw ethernet frame
-	 * or an IP packet or an ARP packet */
+	 * or an IP packet or an ARP packet
+	 */
 	if (proto_type > ETH_DATA_LEN) {
 
 		if (proto_type == ETH_P_IP) {
@@ -430,7 +437,8 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
 			length = XEL_ARP_PACKET_SIZE + ETH_HLEN + ETH_FCS_LEN;
 		else
 			/* Field contains type other than IP or ARP, use max
-			 * frame size and let user parse it */
+			 * frame size and let user parse it
+			 */
 			length = ETH_FRAME_LEN + ETH_FCS_LEN;
 	} else
 		/* Use the length in the frame, plus the header and trailer */
@@ -440,7 +448,7 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
 		length = maxlen;
 
 	/* Read from the EmacLite device */
-	xemaclite_aligned_read((u32 __force *) (addr + XEL_RXBUFF_OFFSET),
+	xemaclite_aligned_read((u32 __force *)(addr + XEL_RXBUFF_OFFSET),
 				data, length);
 
 	/* Acknowledge the frame */
@@ -471,7 +479,7 @@ static void xemaclite_update_address(struct net_local *drvdata,
 	/* Determine the expected Tx buffer address */
 	addr = drvdata->base_addr + drvdata->next_tx_buf_to_use;
 
-	xemaclite_aligned_write(address_ptr, (u32 __force *) addr, ETH_ALEN);
+	xemaclite_aligned_write(address_ptr, (u32 __force *)addr, ETH_ALEN);
 
 	xemaclite_writel(ETH_ALEN, addr + XEL_TPLR_OFFSET);
 
@@ -488,7 +496,7 @@ static void xemaclite_update_address(struct net_local *drvdata,
 /**
  * xemaclite_set_mac_address - Set the MAC address for this device
  * @dev:	Pointer to the network device instance
- * @addr:	Void pointer to the sockaddr structure
+ * @address:	Void pointer to the sockaddr structure
  *
  * This function copies the HW address from the sockaddr strucutre to the
  * net_device structure and updates the address in HW.
@@ -564,19 +572,19 @@ static void xemaclite_tx_handler(struct net_device *dev)
 	struct net_local *lp = netdev_priv(dev);
 
 	dev->stats.tx_packets++;
-	if (lp->deferred_skb) {
-		if (xemaclite_send_data(lp,
-					(u8 *) lp->deferred_skb->data,
-					lp->deferred_skb->len) != 0)
-			return;
-		else {
-			dev->stats.tx_bytes += lp->deferred_skb->len;
-			dev_kfree_skb_irq(lp->deferred_skb);
-			lp->deferred_skb = NULL;
-			netif_trans_update(dev); /* prevent tx timeout */
-			netif_wake_queue(dev);
-		}
-	}
+
+	if (!lp->deferred_skb)
+		return;
+
+	if (xemaclite_send_data(lp, (u8 *)lp->deferred_skb->data,
+				lp->deferred_skb->len))
+		return;
+
+	dev->stats.tx_bytes += lp->deferred_skb->len;
+	dev_kfree_skb_irq(lp->deferred_skb);
+	lp->deferred_skb = NULL;
+	netif_trans_update(dev); /* prevent tx timeout */
+	netif_wake_queue(dev);
 }
 
 /**
@@ -602,18 +610,18 @@ static void xemaclite_rx_handler(struct net_device *dev)
 		return;
 	}
 
-	/*
-	 * A new skb should have the data halfword aligned, but this code is
+	/* A new skb should have the data halfword aligned, but this code is
 	 * here just in case that isn't true. Calculate how many
 	 * bytes we should reserve to get the data to start on a word
-	 * boundary */
+	 * boundary
+	 */
 	align = BUFFER_ALIGN(skb->data);
 	if (align)
 		skb_reserve(skb, align);
 
 	skb_reserve(skb, 2);
 
-	len = xemaclite_recv_data(lp, (u8 *) skb->data, len);
+	len = xemaclite_recv_data(lp, (u8 *)skb->data, len);
 
 	if (!len) {
 		dev->stats.rx_errors++;
@@ -639,6 +647,8 @@ static void xemaclite_rx_handler(struct net_device *dev)
  * @dev_id:	Void pointer to the network device instance used as callback
  *		reference
  *
+ * Return:	IRQ_HANDLED
+ *
  * This function handles the Tx and Rx interrupts of the EmacLite device.
  */
 static irqreturn_t xemaclite_interrupt(int irq, void *dev_id)
@@ -706,8 +716,8 @@ static int xemaclite_mdio_wait(struct net_local *lp)
 	unsigned long end = jiffies + 2;
 
 	/* wait for the MDIO interface to not be busy or timeout
-	   after some time.
-	*/
+	 * after some time.
+	 */
 	while (xemaclite_readl(lp->base_addr + XEL_MDIOCTRL_OFFSET) &
 			XEL_MDIOCTRL_MDIOSTS_MASK) {
 		if (time_before_eq(end, jiffies)) {
@@ -757,7 +767,7 @@ static int xemaclite_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 	rc = xemaclite_readl(lp->base_addr + XEL_MDIORD_OFFSET);
 
 	dev_dbg(&lp->ndev->dev,
-		"xemaclite_mdio_read(phy_id=%i, reg=%x) == %x\n",
+		"%s(phy_id=%i, reg=%x) == %x\n", __func__,
 		phy_id, reg, rc);
 
 	return rc;
@@ -772,6 +782,8 @@ static int xemaclite_mdio_read(struct mii_bus *bus, int phy_id, int reg)
  *
  * This function waits till the device is ready to accept a new MDIO
  * request and then writes the val to the MDIO Write Data register.
+ *
+ * Return:      0 upon success or a negative error upon failure
  */
 static int xemaclite_mdio_write(struct mii_bus *bus, int phy_id, int reg,
 				u16 val)
@@ -780,7 +792,7 @@ static int xemaclite_mdio_write(struct mii_bus *bus, int phy_id, int reg,
 	u32 ctrl_reg;
 
 	dev_dbg(&lp->ndev->dev,
-		"xemaclite_mdio_write(phy_id=%i, reg=%x, val=%x)\n",
+		"%s(phy_id=%i, reg=%x, val=%x)\n", __func__,
 		phy_id, reg, val);
 
 	if (xemaclite_mdio_wait(lp))
@@ -805,7 +817,7 @@ static int xemaclite_mdio_write(struct mii_bus *bus, int phy_id, int reg,
 /**
  * xemaclite_mdio_setup - Register mii_bus for the Emaclite device
  * @lp:		Pointer to the Emaclite device private data
- * @ofdev:	Pointer to OF device structure
+ * @dev:	Pointer to OF device structure
  *
  * This function enables MDIO bus in the Emaclite device and registers a
  * mii_bus.
@@ -905,6 +917,9 @@ static void xemaclite_adjust_link(struct net_device *ndev)
  * This function sets the MAC address, requests an IRQ and enables interrupts
  * for the Emaclite device and starts the Tx queue.
  * It also connects to the phy device, if MDIO is included in Emaclite device.
+ *
+ * Return:	0 on success. -ENODEV, if PHY cannot be connected.
+ *		Non-zero error value on failure.
  */
 static int xemaclite_open(struct net_device *dev)
 {
@@ -975,6 +990,8 @@ static int xemaclite_open(struct net_device *dev)
  * This function stops the Tx queue, disables interrupts and frees the IRQ for
  * the Emaclite device.
  * It also disconnects the phy device associated with the Emaclite device.
+ *
+ * Return:	0, always.
  */
 static int xemaclite_close(struct net_device *dev)
 {
@@ -1017,10 +1034,11 @@ static int xemaclite_send(struct sk_buff *orig_skb, struct net_device *dev)
 	new_skb = orig_skb;
 
 	spin_lock_irqsave(&lp->reset_lock, flags);
-	if (xemaclite_send_data(lp, (u8 *) new_skb->data, len) != 0) {
+	if (xemaclite_send_data(lp, (u8 *)new_skb->data, len) != 0) {
 		/* If the Emaclite Tx buffer is busy, stop the Tx queue and
 		 * defer the skb for transmission during the ISR, after the
-		 * current transmission is complete */
+		 * current transmission is complete
+		 */
 		netif_stop_queue(dev);
 		lp->deferred_skb = new_skb;
 		/* Take the time stamp now, since we can't do this in an ISR. */
@@ -1052,13 +1070,12 @@ static bool get_bool(struct platform_device *ofdev, const char *s)
 {
 	u32 *p = (u32 *)of_get_property(ofdev->dev.of_node, s, NULL);
 
-	if (p) {
-		return (bool)*p;
-	} else {
-		dev_warn(&ofdev->dev, "Parameter %s not found,"
-			"defaulting to false\n", s);
+	if (!p) {
+		dev_warn(&ofdev->dev, "Parameter %s not found, defaulting to false\n", s);
 		return false;
 	}
+
+	return (bool)*p;
 }
 
 static const struct net_device_ops xemaclite_netdev_ops;
@@ -1066,7 +1083,6 @@ static const struct net_device_ops xemaclite_netdev_ops;
 /**
  * xemaclite_of_probe - Probe method for the Emaclite device.
  * @ofdev:	Pointer to OF device structure
- * @match:	Pointer to the structure used for matching a device
  *
  * This function probes for the Emaclite device in the device tree.
  * It initializes the driver data structure and the hardware, sets the MAC