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

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits)
  dp83640: free packet queues on remove
  dp83640: use proper function to free transmit time stamping packets
  ipv6: Do not use routes from locally generated RAs
  |PATCH net-next] tg3: add tx_dropped counter
  be2net: don't create multiple RX/TX rings in multi channel mode
  be2net: don't create multiple TXQs in BE2
  be2net: refactor VF setup/teardown code into be_vf_setup/clear()
  be2net: add vlan/rx-mode/flow-control config to be_setup()
  net_sched: cls_flow: use skb_header_pointer()
  ipv4: avoid useless call of the function check_peer_pmtu
  TCP: remove TCP_DEBUG
  net: Fix driver name for mdio-gpio.c
  ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT
  rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces
  ipv4: fix ipsec forward performance regression
  jme: fix irq storm after suspend/resume
  route: fix ICMP redirect validation
  net: hold sock reference while processing tx timestamps
  tcp: md5: add more const attributes
  Add ethtool -g support to virtio_net
  ...

Fix up conflicts in:
 - drivers/net/Kconfig:
	The split-up generated a trivial conflict with removal of a
	stale reference to Documentation/networking/net-modules.txt.
	Remove it from the new location instead.
 - fs/sysfs/dir.c:
	Fairly nasty conflicts with the sysfs rb-tree usage, conflicting
	with Eric Biederman's changes for tagged directories.

21 files changed, 515 insertions, 263 deletions

diff --git a/net/core/datagram.c b/net/core/datagram.c
index 18ac112ea7a..68bbf9f65cb 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -324,15 +324,15 @@ int skb_copy_datagram_iovec(const struct sk_buff *skb, int offset,
 	/* Copy paged appendix. Hmm... why does this look so complicated? */
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		int end;
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 		WARN_ON(start > offset + len);
 
-		end = start + skb_shinfo(skb)->frags[i].size;
+		end = start + skb_frag_size(frag);
 		if ((copy = end - offset) > 0) {
 			int err;
 			u8  *vaddr;
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-			struct page *page = frag->page;
+			struct page *page = skb_frag_page(frag);
 
 			if (copy > len)
 				copy = len;
@@ -410,15 +410,15 @@ int skb_copy_datagram_const_iovec(const struct sk_buff *skb, int offset,
 	/* Copy paged appendix. Hmm... why does this look so complicated? */
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		int end;
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 		WARN_ON(start > offset + len);
 
-		end = start + skb_shinfo(skb)->frags[i].size;
+		end = start + skb_frag_size(frag);
 		if ((copy = end - offset) > 0) {
 			int err;
 			u8  *vaddr;
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-			struct page *page = frag->page;
+			struct page *page = skb_frag_page(frag);
 
 			if (copy > len)
 				copy = len;
@@ -500,15 +500,15 @@ int skb_copy_datagram_from_iovec(struct sk_buff *skb, int offset,
 	/* Copy paged appendix. Hmm... why does this look so complicated? */
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		int end;
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 		WARN_ON(start > offset + len);
 
-		end = start + skb_shinfo(skb)->frags[i].size;
+		end = start + skb_frag_size(frag);
 		if ((copy = end - offset) > 0) {
 			int err;
 			u8  *vaddr;
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-			struct page *page = frag->page;
+			struct page *page = skb_frag_page(frag);
 
 			if (copy > len)
 				copy = len;
@@ -585,16 +585,16 @@ static int skb_copy_and_csum_datagram(const struct sk_buff *skb, int offset,
 
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		int end;
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
 		WARN_ON(start > offset + len);
 
-		end = start + skb_shinfo(skb)->frags[i].size;
+		end = start + skb_frag_size(frag);
 		if ((copy = end - offset) > 0) {
 			__wsum csum2;
 			int err = 0;
 			u8  *vaddr;
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-			struct page *page = frag->page;
+			struct page *page = skb_frag_page(frag);
 
 			if (copy > len)
 				copy = len;
diff --git a/net/core/dev.c b/net/core/dev.c
index 231d3125bf2..edcf019c056 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -133,6 +133,10 @@
 #include <linux/pci.h>
 #include <linux/inetdevice.h>
 #include <linux/cpu_rmap.h>
+#include <linux/if_tunnel.h>
+#include <linux/if_pppox.h>
+#include <linux/ppp_defs.h>
+#include <linux/net_tstamp.h>
 
 #include "net-sysfs.h"
 
@@ -1474,6 +1478,57 @@ static inline void net_timestamp_check(struct sk_buff *skb)
 		__net_timestamp(skb);
 }
 
+static int net_hwtstamp_validate(struct ifreq *ifr)
+{
+	struct hwtstamp_config cfg;
+	enum hwtstamp_tx_types tx_type;
+	enum hwtstamp_rx_filters rx_filter;
+	int tx_type_valid = 0;
+	int rx_filter_valid = 0;
+
+	if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+		return -EFAULT;
+
+	if (cfg.flags) /* reserved for future extensions */
+		return -EINVAL;
+
+	tx_type = cfg.tx_type;
+	rx_filter = cfg.rx_filter;
+
+	switch (tx_type) {
+	case HWTSTAMP_TX_OFF:
+	case HWTSTAMP_TX_ON:
+	case HWTSTAMP_TX_ONESTEP_SYNC:
+		tx_type_valid = 1;
+		break;
+	}
+
+	switch (rx_filter) {
+	case HWTSTAMP_FILTER_NONE:
+	case HWTSTAMP_FILTER_ALL:
+	case HWTSTAMP_FILTER_SOME:
+	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+		rx_filter_valid = 1;
+		break;
+	}
+
+	if (!tx_type_valid || !rx_filter_valid)
+		return -ERANGE;
+
+	return 0;
+}
+
 static inline bool is_skb_forwardable(struct net_device *dev,
 				      struct sk_buff *skb)
 {
@@ -1955,9 +2010,11 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 #ifdef CONFIG_HIGHMEM
 	int i;
 	if (!(dev->features & NETIF_F_HIGHDMA)) {
-		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-			if (PageHighMem(skb_shinfo(skb)->frags[i].page))
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+			if (PageHighMem(skb_frag_page(frag)))
 				return 1;
+		}
 	}
 
 	if (PCI_DMA_BUS_IS_PHYS) {
@@ -1966,7 +2023,8 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 		if (!pdev)
 			return 0;
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-			dma_addr_t addr = page_to_phys(skb_shinfo(skb)->frags[i].page);
+			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+			dma_addr_t addr = page_to_phys(skb_frag_page(frag));
 			if (!pdev->dma_mask || addr + PAGE_SIZE - 1 > *pdev->dma_mask)
 				return 1;
 		}
@@ -2527,25 +2585,31 @@ static inline void ____napi_schedule(struct softnet_data *sd,
 
 /*
  * __skb_get_rxhash: calculate a flow hash based on src/dst addresses
- * and src/dst port numbers. Returns a non-zero hash number on success
- * and 0 on failure.
+ * and src/dst port numbers.  Sets rxhash in skb to non-zero hash value
+ * on success, zero indicates no valid hash.  Also, sets l4_rxhash in skb
+ * if hash is a canonical 4-tuple hash over transport ports.
  */
-__u32 __skb_get_rxhash(struct sk_buff *skb)
+void __skb_get_rxhash(struct sk_buff *skb)
 {
 	int nhoff, hash = 0, poff;
 	const struct ipv6hdr *ip6;
 	const struct iphdr *ip;
+	const struct vlan_hdr *vlan;
 	u8 ip_proto;
-	u32 addr1, addr2, ihl;
+	u32 addr1, addr2;
+	u16 proto;
 	union {
 		u32 v32;
 		u16 v16[2];
 	} ports;
 
 	nhoff = skb_network_offset(skb);
+	proto = skb->protocol;
 
-	switch (skb->protocol) {
+again:
+	switch (proto) {
 	case __constant_htons(ETH_P_IP):
+ip:
 		if (!pskb_may_pull(skb, sizeof(*ip) + nhoff))
 			goto done;
 
@@ -2556,9 +2620,10 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
 			ip_proto = ip->protocol;
 		addr1 = (__force u32) ip->saddr;
 		addr2 = (__force u32) ip->daddr;
-		ihl = ip->ihl;
+		nhoff += ip->ihl * 4;
 		break;
 	case __constant_htons(ETH_P_IPV6):
+ipv6:
 		if (!pskb_may_pull(skb, sizeof(*ip6) + nhoff))
 			goto done;
 
@@ -2566,20 +2631,71 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
 		ip_proto = ip6->nexthdr;
 		addr1 = (__force u32) ip6->saddr.s6_addr32[3];
 		addr2 = (__force u32) ip6->daddr.s6_addr32[3];
-		ihl = (40 >> 2);
+		nhoff += 40;
 		break;
+	case __constant_htons(ETH_P_8021Q):
+		if (!pskb_may_pull(skb, sizeof(*vlan) + nhoff))
+			goto done;
+		vlan = (const struct vlan_hdr *) (skb->data + nhoff);
+		proto = vlan->h_vlan_encapsulated_proto;
+		nhoff += sizeof(*vlan);
+		goto again;
+	case __constant_htons(ETH_P_PPP_SES):
+		if (!pskb_may_pull(skb, PPPOE_SES_HLEN + nhoff))
+			goto done;
+		proto = *((__be16 *) (skb->data + nhoff +
+				      sizeof(struct pppoe_hdr)));
+		nhoff += PPPOE_SES_HLEN;
+		switch (proto) {
+		case __constant_htons(PPP_IP):
+			goto ip;
+		case __constant_htons(PPP_IPV6):
+			goto ipv6;
+		default:
+			goto done;
+		}
 	default:
 		goto done;
 	}
 
+	switch (ip_proto) {
+	case IPPROTO_GRE:
+		if (pskb_may_pull(skb, nhoff + 16)) {
+			u8 *h = skb->data + nhoff;
+			__be16 flags = *(__be16 *)h;
+
+			/*
+			 * Only look inside GRE if version zero and no
+			 * routing
+			 */
+			if (!(flags & (GRE_VERSION|GRE_ROUTING))) {
+				proto = *(__be16 *)(h + 2);
+				nhoff += 4;
+				if (flags & GRE_CSUM)
+					nhoff += 4;
+				if (flags & GRE_KEY)
+					nhoff += 4;
+				if (flags & GRE_SEQ)
+					nhoff += 4;
+				goto again;
+			}
+		}
+		break;
+	case IPPROTO_IPIP:
+		goto again;
+	default:
+		break;
+	}
+
 	ports.v32 = 0;
 	poff = proto_ports_offset(ip_proto);
 	if (poff >= 0) {
-		nhoff += ihl * 4 + poff;
+		nhoff += poff;
 		if (pskb_may_pull(skb, nhoff + 4)) {
 			ports.v32 = * (__force u32 *) (skb->data + nhoff);
 			if (ports.v16[1] < ports.v16[0])
 				swap(ports.v16[0], ports.v16[1]);
+			skb->l4_rxhash = 1;
 		}
 	}
 
@@ -2592,7 +2708,7 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
 		hash = 1;
 
 done:
-	return hash;
+	skb->rxhash = hash;
 }
 EXPORT_SYMBOL(__skb_get_rxhash);
 
@@ -2606,10 +2722,7 @@ static struct rps_dev_flow *
 set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
 	    struct rps_dev_flow *rflow, u16 next_cpu)
 {
-	u16 tcpu;
-
-	tcpu = rflow->cpu = next_cpu;
-	if (tcpu != RPS_NO_CPU) {
+	if (next_cpu != RPS_NO_CPU) {
 #ifdef CONFIG_RFS_ACCEL
 		struct netdev_rx_queue *rxqueue;
 		struct rps_dev_flow_table *flow_table;
@@ -2637,16 +2750,16 @@ set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
 			goto out;
 		old_rflow = rflow;
 		rflow = &flow_table->flows[flow_id];
-		rflow->cpu = next_cpu;
 		rflow->filter = rc;
 		if (old_rflow->filter == rflow->filter)
 			old_rflow->filter = RPS_NO_FILTER;
 	out:
 #endif
 		rflow->last_qtail =
-			per_cpu(softnet_data, tcpu).input_queue_head;
+			per_cpu(softnet_data, next_cpu).input_queue_head;
 	}
 
+	rflow->cpu = next_cpu;
 	return rflow;
 }
 
@@ -2681,13 +2794,13 @@ static int get_rps_cpu(struct net_device *dev, struct sk_buff *skb,
 	map = rcu_dereference(rxqueue->rps_map);
 	if (map) {
 		if (map->len == 1 &&
-		    !rcu_dereference_raw(rxqueue->rps_flow_table)) {
+		    !rcu_access_pointer(rxqueue->rps_flow_table)) {
 			tcpu = map->cpus[0];
 			if (cpu_online(tcpu))
 				cpu = tcpu;
 			goto done;
 		}
-	} else if (!rcu_dereference_raw(rxqueue->rps_flow_table)) {
+	} else if (!rcu_access_pointer(rxqueue->rps_flow_table)) {
 		goto done;
 	}
 
@@ -3102,8 +3215,8 @@ void netdev_rx_handler_unregister(struct net_device *dev)
 {
 
 	ASSERT_RTNL();
-	rcu_assign_pointer(dev->rx_handler, NULL);
-	rcu_assign_pointer(dev->rx_handler_data, NULL);
+	RCU_INIT_POINTER(dev->rx_handler, NULL);
+	RCU_INIT_POINTER(dev->rx_handler_data, NULL);
 }
 EXPORT_SYMBOL_GPL(netdev_rx_handler_unregister);
 
@@ -3170,6 +3283,17 @@ another_round:
 ncls:
 #endif
 
+	if (vlan_tx_tag_present(skb)) {
+		if (pt_prev) {
+			ret = deliver_skb(skb, pt_prev, orig_dev);
+			pt_prev = NULL;
+		}
+		if (vlan_do_receive(&skb))
+			goto another_round;
+		else if (unlikely(!skb))
+			goto out;
+	}
+
 	rx_handler = rcu_dereference(skb->dev->rx_handler);
 	if (rx_handler) {
 		if (pt_prev) {
@@ -3190,18 +3314,6 @@ ncls:
 		}
 	}
 
-	if (vlan_tx_tag_present(skb)) {
-		if (pt_prev) {
-			ret = deliver_skb(skb, pt_prev, orig_dev);
-			pt_prev = NULL;
-		}
-		if (vlan_do_receive(&skb)) {
-			ret = __netif_receive_skb(skb);
-			goto out;
-		} else if (unlikely(!skb))
-			goto out;
-	}
-
 	/* deliver only exact match when indicated */
 	null_or_dev = deliver_exact ? skb->dev : NULL;
 
@@ -3429,10 +3541,10 @@ pull:
 		skb->data_len -= grow;
 
 		skb_shinfo(skb)->frags[0].page_offset += grow;
-		skb_shinfo(skb)->frags[0].size -= grow;
+		skb_frag_size_sub(&skb_shinfo(skb)->frags[0], grow);
 
-		if (unlikely(!skb_shinfo(skb)->frags[0].size)) {
-			put_page(skb_shinfo(skb)->frags[0].page);
+		if (unlikely(!skb_frag_size(&skb_shinfo(skb)->frags[0]))) {
+			skb_frag_unref(skb, 0);
 			memmove(skb_shinfo(skb)->frags,
 				skb_shinfo(skb)->frags + 1,
 				--skb_shinfo(skb)->nr_frags * sizeof(skb_frag_t));
@@ -3496,11 +3608,10 @@ void skb_gro_reset_offset(struct sk_buff *skb)
 	NAPI_GRO_CB(skb)->frag0_len = 0;
 
 	if (skb->mac_header == skb->tail &&
-	    !PageHighMem(skb_shinfo(skb)->frags[0].page)) {
+	    !PageHighMem(skb_frag_page(&skb_shinfo(skb)->frags[0]))) {
 		NAPI_GRO_CB(skb)->frag0 =
-			page_address(skb_shinfo(skb)->frags[0].page) +
-			skb_shinfo(skb)->frags[0].page_offset;
-		NAPI_GRO_CB(skb)->frag0_len = skb_shinfo(skb)->frags[0].size;
+			skb_frag_address(&skb_shinfo(skb)->frags[0]);
+		NAPI_GRO_CB(skb)->frag0_len = skb_frag_size(&skb_shinfo(skb)->frags[0]);
 	}
 }
 EXPORT_SYMBOL(skb_gro_reset_offset);
@@ -3982,6 +4093,60 @@ static int dev_ifconf(struct net *net, char __user *arg)
 }
 
 #ifdef CONFIG_PROC_FS
+
+#define BUCKET_SPACE (32 - NETDEV_HASHBITS)
+
+struct dev_iter_state {
+	struct seq_net_private p;
+	unsigned int pos; /* bucket << BUCKET_SPACE + offset */
+};
+
+#define get_bucket(x) ((x) >> BUCKET_SPACE)
+#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
+#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o))
+
+static inline struct net_device *dev_from_same_bucket(struct seq_file *seq)
+{
+	struct dev_iter_state *state = seq->private;
+	struct net *net = seq_file_net(seq);
+	struct net_device *dev;
+	struct hlist_node *p;
+	struct hlist_head *h;
+	unsigned int count, bucket, offset;
+
+	bucket = get_bucket(state->pos);
+	offset = get_offset(state->pos);
+	h = &net->dev_name_head[bucket];
+	count = 0;
+	hlist_for_each_entry_rcu(dev, p, h, name_hlist) {
+		if (count++ == offset) {
+			state->pos = set_bucket_offset(bucket, count);
+			return dev;
+		}
+	}
+
+	return NULL;
+}
+
+static inline struct net_device *dev_from_new_bucket(struct seq_file *seq)
+{
+	struct dev_iter_state *state = seq->private;
+	struct net_device *dev;
+	unsigned int bucket;
+
+	bucket = get_bucket(state->pos);
+	do {
+		dev = dev_from_same_bucket(seq);
+		if (dev)
+			return dev;
+
+		bucket++;
+		state->pos = set_bucket_offset(bucket, 0);
+	} while (bucket < NETDEV_HASHENTRIES);
+
+	return NULL;
+}
+
 /*
  *	This is invoked by the /proc filesystem handler to display a device
  *	in detail.
@@ -3989,33 +4154,33 @@ static int dev_ifconf(struct net *net, char __user *arg)
 void *dev_seq_start(struct seq_file *seq, loff_t *pos)
 	__acquires(RCU)
 {
-	struct net *net = seq_file_net(seq);
-	loff_t off;
-	struct net_device *dev;
+	struct dev_iter_state *state = seq->private;
 
 	rcu_read_lock();
 	if (!*pos)
 		return SEQ_START_TOKEN;
 
-	off = 1;
-	for_each_netdev_rcu(net, dev)
-		if (off++ == *pos)
-			return dev;
+	/* check for end of the hash */
+	if (state->pos == 0 && *pos > 1)
+		return NULL;
 
-	return NULL;
+	return dev_from_new_bucket(seq);
 }
 
 void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-	struct net_device *dev = v;
+	struct net_device *dev;
+
+	++*pos;
 
 	if (v == SEQ_START_TOKEN)
-		dev = first_net_device_rcu(seq_file_net(seq));
-	else
-		dev = next_net_device_rcu(dev);
+		return dev_from_new_bucket(seq);
 
-	++*pos;
-	return dev;
+	dev = dev_from_same_bucket(seq);
+	if (dev)
+		return dev;
+
+	return dev_from_new_bucket(seq);
 }
 
 void dev_seq_stop(struct seq_file *seq, void *v)
@@ -4114,7 +4279,7 @@ static const struct seq_operations dev_seq_ops = {
 static int dev_seq_open(struct inode *inode, struct file *file)
 {
 	return seq_open_net(inode, file, &dev_seq_ops,
-			    sizeof(struct seq_net_private));
+			    sizeof(struct dev_iter_state));
 }
 
 static const struct file_operations dev_seq_fops = {
@@ -4497,9 +4662,7 @@ void __dev_set_rx_mode(struct net_device *dev)
 	if (!netif_device_present(dev))
 		return;
 
-	if (ops->ndo_set_rx_mode)
-		ops->ndo_set_rx_mode(dev);
-	else {
+	if (!(dev->priv_flags & IFF_UNICAST_FLT)) {
 		/* Unicast addresses changes may only happen under the rtnl,
 		 * therefore calling __dev_set_promiscuity here is safe.
 		 */
@@ -4510,10 +4673,10 @@ void __dev_set_rx_mode(struct net_device *dev)
 			__dev_set_promiscuity(dev, -1);
 			dev->uc_promisc = false;
 		}
-
-		if (ops->ndo_set_multicast_list)
-			ops->ndo_set_multicast_list(dev);
 	}
+
+	if (ops->ndo_set_rx_mode)
+		ops->ndo_set_rx_mode(dev);
 }
 
 void dev_set_rx_mode(struct net_device *dev)
@@ -4524,30 +4687,6 @@ void dev_set_rx_mode(struct net_device *dev)
 }
 
 /**
- *	dev_ethtool_get_settings - call device's ethtool_ops::get_settings()
- *	@dev: device
- *	@cmd: memory area for ethtool_ops::get_settings() result
- *
- *      The cmd arg is initialized properly (cleared and
- *      ethtool_cmd::cmd field set to ETHTOOL_GSET).
- *
- *	Return device's ethtool_ops::get_settings() result value or
- *	-EOPNOTSUPP when device doesn't expose
- *	ethtool_ops::get_settings() operation.
- */
-int dev_ethtool_get_settings(struct net_device *dev,
-			     struct ethtool_cmd *cmd)
-{
-	if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
-		return -EOPNOTSUPP;
-
-	memset(cmd, 0, sizeof(struct ethtool_cmd));
-	cmd->cmd = ETHTOOL_GSET;
-	return dev->ethtool_ops->get_settings(dev, cmd);
-}
-EXPORT_SYMBOL(dev_ethtool_get_settings);
-
-/**
  *	dev_get_flags - get flags reported to userspace
  *	@dev: device
  *
@@ -4863,7 +5002,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
 		return -EOPNOTSUPP;
 
 	case SIOCADDMULTI:
-		if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+		if (!ops->ndo_set_rx_mode ||
 		    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
 			return -EINVAL;
 		if (!netif_device_present(dev))
@@ -4871,7 +5010,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
 		return dev_mc_add_global(dev, ifr->ifr_hwaddr.sa_data);
 
 	case SIOCDELMULTI:
-		if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+		if (!ops->ndo_set_rx_mode ||
 		    ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
 			return -EINVAL;
 		if (!netif_device_present(dev))
@@ -4888,6 +5027,12 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
 		ifr->ifr_newname[IFNAMSIZ-1] = '\0';
 		return dev_change_name(dev, ifr->ifr_newname);
 
+	case SIOCSHWTSTAMP:
+		err = net_hwtstamp_validate(ifr);
+		if (err)
+			return err;
+		/* fall through */
+
 	/*
 	 *	Unknown or private ioctl
 	 */
@@ -5202,7 +5347,7 @@ static void rollback_registered_many(struct list_head *head)
 	dev = list_first_entry(head, struct net_device, unreg_list);
 	call_netdevice_notifiers(NETDEV_UNREGISTER_BATCH, dev);
 
-	rcu_barrier();
+	synchronize_net();
 
 	list_for_each_entry(dev, head, unreg_list)
 		dev_put(dev);
@@ -5715,6 +5860,12 @@ void netdev_run_todo(void)
 
 	__rtnl_unlock();
 
+	/* Wait for rcu callbacks to finish before attempting to drain
+	 * the device list.  This usually avoids a 250ms wait.
+	 */
+	if (!list_empty(&list))
+		rcu_barrier();
+
 	while (!list_empty(&list)) {
 		struct net_device *dev
 			= list_first_entry(&list, struct net_device, todo_list);
@@ -5735,8 +5886,8 @@ void netdev_run_todo(void)
 
 		/* paranoia */
 		BUG_ON(netdev_refcnt_read(dev));
-		WARN_ON(rcu_dereference_raw(dev->ip_ptr));
-		WARN_ON(rcu_dereference_raw(dev->ip6_ptr));
+		WARN_ON(rcu_access_pointer(dev->ip_ptr));
+		WARN_ON(rcu_access_pointer(dev->ip6_ptr));
 		WARN_ON(dev->dn_ptr);
 
 		if (dev->destructor)
@@ -5940,7 +6091,7 @@ void free_netdev(struct net_device *dev)
 	kfree(dev->_rx);
 #endif
 
-	kfree(rcu_dereference_raw(dev->ingress_queue));
+	kfree(rcu_dereference_protected(dev->ingress_queue, 1));
 
 	/* Flush device addresses */
 	dev_addr_flush(dev);
@@ -6115,6 +6266,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	*/
 	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
 	call_netdevice_notifiers(NETDEV_UNREGISTER_BATCH, dev);
+	rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
 
 	/*
 	 *	Flush the unicast and multicast chains
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index e2e66939ed0..283d1b86387 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c
@@ -591,8 +591,8 @@ EXPORT_SYMBOL(dev_mc_del_global);
  *	addresses that have no users left. The source device must be
  *	locked by netif_tx_lock_bh.
  *
- *	This function is intended to be called from the dev->set_multicast_list
- *	or dev->set_rx_mode function of layered software devices.
+ *	This function is intended to be called from the ndo_set_rx_mode
+ *	function of layered software devices.
  */
 int dev_mc_sync(struct net_device *to, struct net_device *from)
 {
diff --git a/net/core/dst.c b/net/core/dst.c
index 14b33baf073..d5e2c4c0910 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -171,7 +171,7 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
 	dst_init_metrics(dst, dst_default_metrics, true);
 	dst->expires = 0UL;
 	dst->path = dst;
-	dst->_neighbour = NULL;
+	RCU_INIT_POINTER(dst->_neighbour, NULL);
 #ifdef CONFIG_XFRM
 	dst->xfrm = NULL;
 #endif
@@ -229,11 +229,11 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
 	smp_rmb();
 
 again:
-	neigh = dst->_neighbour;
+	neigh = rcu_dereference_protected(dst->_neighbour, 1);
 	child = dst->child;
 
 	if (neigh) {
-		dst->_neighbour = NULL;
+		RCU_INIT_POINTER(dst->_neighbour, NULL);
 		neigh_release(neigh);
 	}
 
@@ -360,14 +360,19 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 	if (!unregister) {
 		dst->input = dst->output = dst_discard;
 	} else {
+		struct neighbour *neigh;
+
 		dst->dev = dev_net(dst->dev)->loopback_dev;
 		dev_hold(dst->dev);
 		dev_put(dev);
-		if (dst->_neighbour && dst->_neighbour->dev == dev) {
-			dst->_neighbour->dev = dst->dev;
+		rcu_read_lock();
+		neigh = dst_get_neighbour(dst);
+		if (neigh && neigh->dev == dev) {
+			neigh->dev = dst->dev;
 			dev_hold(dst->dev);
 			dev_put(dev);
 		}
+		rcu_read_unlock();
 	}
 }
 
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 6cdba5fc2be..f4448170712 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -569,15 +569,25 @@ int __ethtool_set_flags(struct net_device *dev, u32 data)
 	return 0;
 }
 
-static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
-	struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
-	int err;
+	ASSERT_RTNL();
 
-	if (!dev->ethtool_ops->get_settings)
+	if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
 		return -EOPNOTSUPP;
 
-	err = dev->ethtool_ops->get_settings(dev, &cmd);
+	memset(cmd, 0, sizeof(struct ethtool_cmd));
+	cmd->cmd = ETHTOOL_GSET;
+	return dev->ethtool_ops->get_settings(dev, cmd);
+}
+EXPORT_SYMBOL(__ethtool_get_settings);
+
+static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+{
+	int err;
+	struct ethtool_cmd cmd;
+
+	err = __ethtool_get_settings(dev, &cmd);
 	if (err < 0)
 		return err;
 
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 27071ee2a4e..57e8f95110e 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -490,7 +490,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 		if (ops->nr_goto_rules > 0) {
 			list_for_each_entry(tmp, &ops->rules_list, list) {
 				if (rtnl_dereference(tmp->ctarget) == rule) {
-					rcu_assign_pointer(tmp->ctarget, NULL);
+					RCU_INIT_POINTER(tmp->ctarget, NULL);
 					ops->unresolved_rules++;
 				}
 			}
@@ -548,7 +548,7 @@ static int fib_nl_fill_rule(struct sk_buff *skb, struct fib_rule *rule,
 	frh->flags = rule->flags;
 
 	if (rule->action == FR_ACT_GOTO &&
-	    rcu_dereference_raw(rule->ctarget) == NULL)
+	    rcu_access_pointer(rule->ctarget) == NULL)
 		frh->flags |= FIB_RULE_UNRESOLVED;
 
 	if (rule->iifname[0]) {
diff --git a/net/core/filter.c b/net/core/filter.c
index 36f975fa87c..5dea4527921 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -436,7 +436,7 @@ error:
  *
  * Returns 0 if the rule set is legal or -EINVAL if not.
  */
-int sk_chk_filter(struct sock_filter *filter, int flen)
+int sk_chk_filter(struct sock_filter *filter, unsigned int flen)
 {
 	/*
 	 * Valid instructions are initialized to non-0.
@@ -645,7 +645,7 @@ int sk_detach_filter(struct sock *sk)
 	filter = rcu_dereference_protected(sk->sk_filter,
 					   sock_owned_by_user(sk));
 	if (filter) {
-		rcu_assign_pointer(sk->sk_filter, NULL);
+		RCU_INIT_POINTER(sk->sk_filter, NULL);
 		sk_filter_uncharge(sk, filter);
 		ret = 0;
 	}
diff --git a/net/core/flow.c b/net/core/flow.c
index 555a456efb0..8ae42de9c79 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -413,7 +413,7 @@ static int __init flow_cache_init(struct flow_cache *fc)
 
 	for_each_online_cpu(i) {
 		if (flow_cache_cpu_prepare(fc, i))
-			return -ENOMEM;
+			goto err;
 	}
 	fc->hotcpu_notifier = (struct notifier_block){
 		.notifier_call = flow_cache_cpu,
@@ -426,6 +426,18 @@ static int __init flow_cache_init(struct flow_cache *fc)
 	add_timer(&fc->rnd_timer);
 
 	return 0;
+
+err:
+	for_each_possible_cpu(i) {
+		struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, i);
+		kfree(fcp->hash_table);
+		fcp->hash_table = NULL;
+	}
+
+	free_percpu(fc->percpu);
+	fc->percpu = NULL;
+
+	return -ENOMEM;
 }
 
 static int __init flow_cache_init_global(void)
diff --git a/net/core/kmap_skb.h b/net/core/kmap_skb.h
index 283c2b993fb..81e1ed7c838 100644
--- a/net/core/kmap_skb.h
+++ b/net/core/kmap_skb.h
@@ -7,7 +7,7 @@ static inline void *kmap_skb_frag(const skb_frag_t *frag)
 
 	local_bh_disable();
 #endif
-	return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
+	return kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ);
 }
 
 static inline void kunmap_skb_frag(void *vaddr)
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 357bd4ee4ba..c3519c6d1b1 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -78,8 +78,13 @@ static void rfc2863_policy(struct net_device *dev)
 
 static bool linkwatch_urgent_event(struct net_device *dev)
 {
-	return netif_running(dev) && netif_carrier_ok(dev) &&
-		qdisc_tx_changing(dev);
+	if (!netif_running(dev))
+		return false;
+
+	if (dev->ifindex != dev->iflink)
+		return true;
+
+	return netif_carrier_ok(dev) &&	qdisc_tx_changing(dev);
 }
 
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 1334d7e56f0..909ecb3c2a3 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -844,6 +844,19 @@ static void neigh_invalidate(struct neighbour *neigh)
 	skb_queue_purge(&neigh->arp_queue);
 }
 
+static void neigh_probe(struct neighbour *neigh)
+	__releases(neigh->lock)
+{
+	struct sk_buff *skb = skb_peek(&neigh->arp_queue);
+	/* keep skb alive even if arp_queue overflows */
+	if (skb)
+		skb = skb_copy(skb, GFP_ATOMIC);
+	write_unlock(&neigh->lock);