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

Pull networking fixes from David Miller:
 "Just a bunch of small fixes and tidy ups:

   1) Finish the "busy_poll" renames, from Eliezer Tamir.

   2) Fix RCU stalls in IFB driver, from Ding Tianhong.

   3) Linearize buffers properly in tun/macvtap zerocopy code.

   4) Don't crash on rmmod in vxlan, from Pravin B Shelar.

   5) Spinlock used before init in alx driver, from Maarten Lankhorst.

   6) A sparse warning fix in bnx2x broke TSO checksums, fix from Dmitry
      Kravkov.

   7) Dummy and ifb driver load failure paths can oops, fixes from Tan
      Xiaojun and Ding Tianhong.

   8) Correct MTU calculations in IP tunnels, from Alexander Duyck.

   9) Account all TCP retransmits in SNMP stats properly, from Yuchung
      Cheng.

  10) atl1e and via-rhine do not handle DMA mapping failures properly,
      from Neil Horman.

  11) Various equal-cost multipath route fixes in ipv6 from Hannes
      Frederic Sowa"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (36 commits)
  ipv6: only static routes qualify for equal cost multipathing
  via-rhine: fix dma mapping errors
  atl1e: fix dma mapping warnings
  tcp: account all retransmit failures
  usb/net/r815x: fix cast to restricted __le32
  usb/net/r8152: fix integer overflow in expression
  net: access page->private by using page_private
  net: strict_strtoul is obsolete, use kstrtoul instead
  drivers/net/ieee802154: don't use devm_pinctrl_get_select_default() in probe
  drivers/net/ethernet/cadence: don't use devm_pinctrl_get_select_default() in probe
  drivers/net/can/c_can: don't use devm_pinctrl_get_select_default() in probe
  net/usb: add relative mii functions for r815x
  net/tipc: use %*phC to dump small buffers in hex form
  qlcnic: Adding Maintainers.
  gre: Fix MTU sizing check for gretap tunnels
  pkt_sched: sch_qfq: remove forward declaration of qfq_update_agg_ts
  pkt_sched: sch_qfq: improve efficiency of make_eligible
  gso: Update tunnel segmentation to support Tx checksum offload
  inet: fix spacing in assignment
  ifb: fix oops when loading the ifb failed
  ...

65 files changed, 607 insertions, 241 deletions

diff --git a/Documentation/sysctl/net.txt b/Documentation/sysctl/net.txt
index d69e14c9002..1c15043aaee 100644
--- a/Documentation/sysctl/net.txt
+++ b/Documentation/sysctl/net.txt
@@ -50,26 +50,27 @@ The maximum number of packets that kernel can handle on a NAPI interrupt,
 it's a Per-CPU variable.
 Default: 64
 
-low_latency_read
+busy_read
 ----------------
 Low latency busy poll timeout for socket reads. (needs CONFIG_NET_LL_RX_POLL)
 Approximate time in us to busy loop waiting for packets on the device queue.
-This sets the default value of the SO_LL socket option.
-Can be set or overridden per socket by setting socket option SO_LL, which is
-the preferred method of enabling.
-If you need to enable the feature globally via sysctl, a value of 50 is recommended.
+This sets the default value of the SO_BUSY_POLL socket option.
+Can be set or overridden per socket by setting socket option SO_BUSY_POLL,
+which is the preferred method of enabling. If you need to enable the feature
+globally via sysctl, a value of 50 is recommended.
 Will increase power usage.
 Default: 0 (off)
 
-low_latency_poll
+busy_poll
 ----------------
 Low latency busy poll timeout for poll and select. (needs CONFIG_NET_LL_RX_POLL)
 Approximate time in us to busy loop waiting for events.
 Recommended value depends on the number of sockets you poll on.
 For several sockets 50, for several hundreds 100.
 For more than that you probably want to use epoll.
-Note that only sockets with SO_LL set will be busy polled, so you want to either
-selectively set SO_LL on those sockets or set sysctl.net.low_latency_read globally.
+Note that only sockets with SO_BUSY_POLL set will be busy polled,
+so you want to either selectively set SO_BUSY_POLL on those sockets or set
+sysctl.net.busy_read globally.
 Will increase power usage.
 Default: 0 (off)
 
diff --git a/MAINTAINERS b/MAINTAINERS
index 4d43db62968..bf61e04291a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6681,10 +6681,12 @@ F:	Documentation/networking/LICENSE.qla3xxx
 F:	drivers/net/ethernet/qlogic/qla3xxx.*
 
 QLOGIC QLCNIC (1/10)Gb ETHERNET DRIVER
+M:	Himanshu Madhani <himanshu.madhani@qlogic.com>
 M:	Rajesh Borundia <rajesh.borundia@qlogic.com>
 M:	Shahed Shaikh <shahed.shaikh@qlogic.com>
 M:	Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
 M:	Sony Chacko <sony.chacko@qlogic.com>
+M:	Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
 M:	linux-driver@qlogic.com
 L:	netdev@vger.kernel.org
 S:	Supported
diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h
index 4885825e498..467de010ea7 100644
--- a/arch/alpha/include/uapi/asm/socket.h
+++ b/arch/alpha/include/uapi/asm/socket.h
@@ -81,6 +81,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL			46
 
 #endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/avr32/include/uapi/asm/socket.h b/arch/avr32/include/uapi/asm/socket.h
index 79b61798ebf..11c4259c62f 100644
--- a/arch/avr32/include/uapi/asm/socket.h
+++ b/arch/avr32/include/uapi/asm/socket.h
@@ -74,6 +74,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* __ASM_AVR32_SOCKET_H */
diff --git a/arch/cris/include/uapi/asm/socket.h b/arch/cris/include/uapi/asm/socket.h
index 47b1ec55092..eb723e51554 100644
--- a/arch/cris/include/uapi/asm/socket.h
+++ b/arch/cris/include/uapi/asm/socket.h
@@ -76,7 +76,7 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_SOCKET_H */
 
diff --git a/arch/frv/include/uapi/asm/socket.h b/arch/frv/include/uapi/asm/socket.h
index dbc08520f22..f0cb1c34116 100644
--- a/arch/frv/include/uapi/asm/socket.h
+++ b/arch/frv/include/uapi/asm/socket.h
@@ -74,7 +74,7 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_SOCKET_H */
 
diff --git a/arch/h8300/include/uapi/asm/socket.h b/arch/h8300/include/uapi/asm/socket.h
index a38d38a6520..9490758c5e2 100644
--- a/arch/h8300/include/uapi/asm/socket.h
+++ b/arch/h8300/include/uapi/asm/socket.h
@@ -74,6 +74,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_SOCKET_H */
diff --git a/arch/ia64/include/uapi/asm/socket.h b/arch/ia64/include/uapi/asm/socket.h
index d3358b76068..556d0701a15 100644
--- a/arch/ia64/include/uapi/asm/socket.h
+++ b/arch/ia64/include/uapi/asm/socket.h
@@ -83,6 +83,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_IA64_SOCKET_H */
diff --git a/arch/m32r/include/uapi/asm/socket.h b/arch/m32r/include/uapi/asm/socket.h
index 44aaf4639a4..24be7c8da86 100644
--- a/arch/m32r/include/uapi/asm/socket.h
+++ b/arch/m32r/include/uapi/asm/socket.h
@@ -74,6 +74,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_M32R_SOCKET_H */
diff --git a/arch/mips/include/uapi/asm/socket.h b/arch/mips/include/uapi/asm/socket.h
index 6a07992ba6c..61c01f054d1 100644
--- a/arch/mips/include/uapi/asm/socket.h
+++ b/arch/mips/include/uapi/asm/socket.h
@@ -92,6 +92,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/mn10300/include/uapi/asm/socket.h b/arch/mn10300/include/uapi/asm/socket.h
index db80fd3e398..e2a2b203eb0 100644
--- a/arch/mn10300/include/uapi/asm/socket.h
+++ b/arch/mn10300/include/uapi/asm/socket.h
@@ -74,6 +74,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_SOCKET_H */
diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h
index f866fff9a00..71700e636a8 100644
--- a/arch/parisc/include/uapi/asm/socket.h
+++ b/arch/parisc/include/uapi/asm/socket.h
@@ -73,7 +73,7 @@
 
 #define SO_SELECT_ERR_QUEUE	0x4026
 
-#define SO_LL			0x4027
+#define SO_BUSY_POLL		0x4027
 
 /* O_NONBLOCK clashes with the bits used for socket types.  Therefore we
  * have to define SOCK_NONBLOCK to a different value here.
diff --git a/arch/powerpc/include/uapi/asm/socket.h b/arch/powerpc/include/uapi/asm/socket.h
index 405fb09bda9..a6d74467c9e 100644
--- a/arch/powerpc/include/uapi/asm/socket.h
+++ b/arch/powerpc/include/uapi/asm/socket.h
@@ -81,6 +81,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif	/* _ASM_POWERPC_SOCKET_H */
diff --git a/arch/s390/include/uapi/asm/socket.h b/arch/s390/include/uapi/asm/socket.h
index 0c5105fbaaf..92494494692 100644
--- a/arch/s390/include/uapi/asm/socket.h
+++ b/arch/s390/include/uapi/asm/socket.h
@@ -80,6 +80,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif /* _ASM_SOCKET_H */
diff --git a/arch/sparc/include/uapi/asm/socket.h b/arch/sparc/include/uapi/asm/socket.h
index b46c3fa0b26..4e1d66c3ce7 100644
--- a/arch/sparc/include/uapi/asm/socket.h
+++ b/arch/sparc/include/uapi/asm/socket.h
@@ -70,7 +70,7 @@
 
 #define SO_SELECT_ERR_QUEUE	0x0029
 
-#define SO_LL			0x0030
+#define SO_BUSY_POLL		0x0030
 
 /* Security levels - as per NRL IPv6 - don't actually do anything */
 #define SO_SECURITY_AUTHENTICATION		0x5001
diff --git a/arch/xtensa/include/uapi/asm/socket.h b/arch/xtensa/include/uapi/asm/socket.h
index b21ace4fc9b..c114483010c 100644
--- a/arch/xtensa/include/uapi/asm/socket.h
+++ b/arch/xtensa/include/uapi/asm/socket.h
@@ -85,6 +85,6 @@
 
 #define SO_SELECT_ERR_QUEUE	45
 
-#define SO_LL			46
+#define SO_BUSY_POLL		46
 
 #endif	/* _XTENSA_SOCKET_H */
diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index b918c732942..c6f838d922a 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -32,7 +32,6 @@
 #include <linux/clk.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/pinctrl/consumer.h>
 
 #include <linux/can/dev.h>
 
@@ -114,7 +113,6 @@ static int c_can_plat_probe(struct platform_device *pdev)
 	struct c_can_priv *priv;
 	const struct of_device_id *match;
 	const struct platform_device_id *id;
-	struct pinctrl *pinctrl;
 	struct resource *mem, *res;
 	int irq;
 	struct clk *clk;
@@ -131,11 +129,6 @@ static int c_can_plat_probe(struct platform_device *pdev)
 		id = platform_get_device_id(pdev);
 	}
 
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl))
-		dev_warn(&pdev->dev,
-			"failed to configure pins from driver\n");
-
 	/* get the appropriate clk */
 	clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c
index 42aa54af684..b710c6b2d65 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -185,6 +185,8 @@ static int __init dummy_init_module(void)
 
 	rtnl_lock();
 	err = __rtnl_link_register(&dummy_link_ops);
+	if (err < 0)
+		goto out;
 
 	for (i = 0; i < numdummies && !err; i++) {
 		err = dummy_init_one();
@@ -192,6 +194,8 @@ static int __init dummy_init_module(void)
 	}
 	if (err < 0)
 		__rtnl_link_unregister(&dummy_link_ops);
+
+out:
 	rtnl_unlock();
 
 	return err;
diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c
index 0e0b242a9dd..027398ebbba 100644
--- a/drivers/net/ethernet/atheros/alx/main.c
+++ b/drivers/net/ethernet/atheros/alx/main.c
@@ -1245,6 +1245,8 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	SET_NETDEV_DEV(netdev, &pdev->dev);
 	alx = netdev_priv(netdev);
+	spin_lock_init(&alx->hw.mdio_lock);
+	spin_lock_init(&alx->irq_lock);
 	alx->dev = netdev;
 	alx->hw.pdev = pdev;
 	alx->msg_enable = NETIF_MSG_LINK | NETIF_MSG_HW | NETIF_MSG_IFUP |
@@ -1327,9 +1329,6 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	INIT_WORK(&alx->link_check_wk, alx_link_check);
 	INIT_WORK(&alx->reset_wk, alx_reset);
-	spin_lock_init(&alx->hw.mdio_lock);
-	spin_lock_init(&alx->irq_lock);
-
 	netif_carrier_off(netdev);
 
 	err = register_netdev(netdev);
diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index 895f5377ad1..6d1a62a84c9 100644
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -1665,8 +1665,8 @@ check_sum:
 	return 0;
 }
 
-static void atl1e_tx_map(struct atl1e_adapter *adapter,
-		      struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
+static int atl1e_tx_map(struct atl1e_adapter *adapter,
+			struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
 {
 	struct atl1e_tpd_desc *use_tpd = NULL;
 	struct atl1e_tx_buffer *tx_buffer = NULL;
@@ -1677,6 +1677,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 	u16 nr_frags;
 	u16 f;
 	int segment;
+	int ring_start = adapter->tx_ring.next_to_use;
 
 	nr_frags = skb_shinfo(skb)->nr_frags;
 	segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
@@ -1689,6 +1690,9 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 		tx_buffer->length = map_len;
 		tx_buffer->dma = pci_map_single(adapter->pdev,
 					skb->data, hdr_len, PCI_DMA_TODEVICE);
+		if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma))
+			return -ENOSPC;
+
 		ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE);
 		mapped_len += map_len;
 		use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
@@ -1715,6 +1719,13 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 		tx_buffer->dma =
 			pci_map_single(adapter->pdev, skb->data + mapped_len,
 					map_len, PCI_DMA_TODEVICE);
+
+		if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) {
+			/* Reset the tx rings next pointer */
+			adapter->tx_ring.next_to_use = ring_start;
+			return -ENOSPC;
+		}
+
 		ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE);
 		mapped_len  += map_len;
 		use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
@@ -1750,6 +1761,13 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 							  (i * MAX_TX_BUF_LEN),
 							  tx_buffer->length,
 							  DMA_TO_DEVICE);
+
+			if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) {
+				/* Reset the ring next to use pointer */
+				adapter->tx_ring.next_to_use = ring_start;
+				return -ENOSPC;
+			}
+
 			ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE);
 			use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
 			use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
@@ -1767,6 +1785,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 	/* The last buffer info contain the skb address,
 	   so it will be free after unmap */
 	tx_buffer->skb = skb;
+	return 0;
 }
 
 static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count,
@@ -1834,10 +1853,13 @@ static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb,
 		return NETDEV_TX_OK;
 	}
 
-	atl1e_tx_map(adapter, skb, tpd);
+	if (atl1e_tx_map(adapter, skb, tpd))
+		goto out;
+
 	atl1e_tx_queue(adapter, tpd_req, tpd);
 
 	netdev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
+out:
 	spin_unlock_irqrestore(&adapter->tx_lock, flags);
 	return NETDEV_TX_OK;
 }
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index ec3aa1d451e..ee350bde181 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -24,7 +24,7 @@
 #include <net/tcp.h>
 #include <net/ipv6.h>
 #include <net/ip6_checksum.h>
-#include <net/ll_poll.h>
+#include <net/busy_poll.h>
 #include <linux/prefetch.h>
 #include "bnx2x_cmn.h"
 #include "bnx2x_init.h"
@@ -990,7 +990,7 @@ reuse_rx:
 			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 					       le16_to_cpu(cqe_fp->vlan_tag));
 
-		skb_mark_ll(skb, &fp->napi);
+		skb_mark_napi_id(skb, &fp->napi);
 
 		if (bnx2x_fp_ll_polling(fp))
 			netif_receive_skb(skb);
@@ -3543,9 +3543,9 @@ static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
 	/* outer IP header info */
 	if (xmit_type & XMIT_CSUM_V4) {
 		struct iphdr *iph = ip_hdr(skb);
-		u16 csum = (__force u16)(~iph->check) -
-			   (__force u16)iph->tot_len -
-			   (__force u16)iph->frag_off;
+		u32 csum = (__force u32)(~iph->check) -
+			   (__force u32)iph->tot_len -
+			   (__force u32)iph->frag_off;
 
 		pbd2->fw_ip_csum_wo_len_flags_frag =
 			bswab16(csum_fold((__force __wsum)csum));
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 15a528bda87..e5da07858a2 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -12027,7 +12027,7 @@ static const struct net_device_ops bnx2x_netdev_ops = {
 #endif
 
 #ifdef CONFIG_NET_LL_RX_POLL
-	.ndo_ll_poll		= bnx2x_low_latency_recv,
+	.ndo_busy_poll		= bnx2x_low_latency_recv,
 #endif
 };
 
diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
index 3f1957158a3..bb5d63fb2e6 100644
--- a/drivers/net/ethernet/cadence/at91_ether.c
+++ b/drivers/net/ethernet/cadence/at91_ether.c
@@ -29,7 +29,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
-#include <linux/pinctrl/consumer.h>
 
 #include "macb.h"
 
@@ -309,7 +308,6 @@ static int __init at91ether_probe(struct platform_device *p