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

Pull networking fixes from David Miller:

 1) Fix erroneous netfilter drop of SIP packets generated by some Cisco
    phones, from Patrick McHardy.

 2) Fix netfilter IPSET refcounting in list_set_add(), from Jozsef
    Kadlecsik.

 3) Fix TCP syncookies route lookup key, we don't use the same values we
    would use for the usual SYN receive processing, from Dmitry Popov.

 4) Fix NULL deref in bond_slave_netdev_event(), from Nikolay
    Aleksandrov.

 5) When bonding enslave fails, we can forget to clear the IFF_BONDING
    bit, fix also from Nikolay Aleksandrov.

 6) skb->csum_start is 16-bits, which is almost always just fine.  But
    if we reallocate the headroom of an SKB this can push the
    skb->csum_start value outside of it's valid range.  This can easily
    happen when collapsing multiple SKBs from the retransmit queue
    together.

    Fix from Thomas Graf.

 7) Fix NULL deref in be2net driver due to missing check of
    __vlan_put_tag() return value, from Ivan Vecera.

 8) tun_set_iff() returns zero instead of error code on failure, fix
    from Wei Yongjun.

 9) Like GARP, 802 MRP needs to hold the app->lock when adding MAD
    events and queueing PDUs.  Fix from David Ward.

10) Build fix, MVMDIO needs PHYLIB, from Thomas Petazzoni..

11) Fix mac80211 static with ipv6 modular build, from Cong Wang.

12) If userland specifies a path cost explicitly, do not override it
    when the carrier state changes.  From Stephen Hemminger.

13) mvnets calculates the TX queue to use incorrectly resulting in
    garbage pointer derefs and crashes, fix from Willy Tarreau.

14) cdc_mbim does erroneous sizeof(ETH_HLEN).  Fix from Bjorn Mork.

15) IP fragmentation can leak a refcount-less route out from an RCU
    protected section.  This results in crashes and all sorts of hard to
    diagnose behavior.  Fix from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits)
  qlcnic: fix beaconing test for 82xx adapter
  net: drop dst before queueing fragments
  net: fec: fix regression in link change accounting
  net: cdc_mbim: remove bogus sizeof()
  drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node
  net: mvneta: fix improper tx queue usage in mvneta_tx()
  esp4: fix error return code in esp_output()
  bridge: make user modified path cost sticky
  ipv6: statically link register_inet6addr_notifier()
  net: mvmdio: add select PHYLIB
  net/802/mrp: fix possible race condition when calling mrp_pdu_queue()
  tuntap: fix error return code in tun_set_iff()
  be2net: take care of __vlan_put_tag return value
  can: sja1000: fix handling on dt properties on little endian systems
  can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq
  netfilter: nf_nat: fix race when unloading protocol modules
  tcp: Reallocate headroom if it would overflow csum_start
  stmmac: prevent interrupt loop with MMC RX IPC Counter
  bonding: IFF_BONDING is not stripped on enslave failure
  bonding: fix netdev event NULL pointer dereference
  ...

32 files changed, 227 insertions, 119 deletions

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 07401a3e256..a61a760484f 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1906,6 +1906,7 @@ err_detach:
 	write_unlock_bh(&bond->lock);
 
 err_close:
+	slave_dev->priv_flags &= ~IFF_BONDING;
 	dev_close(slave_dev);
 
 err_unset_master:
@@ -3168,11 +3169,20 @@ static int bond_slave_netdev_event(unsigned long event,
 				   struct net_device *slave_dev)
 {
 	struct slave *slave = bond_slave_get_rtnl(slave_dev);
-	struct bonding *bond = slave->bond;
-	struct net_device *bond_dev = slave->bond->dev;
+	struct bonding *bond;
+	struct net_device *bond_dev;
 	u32 old_speed;
 	u8 old_duplex;
 
+	/* A netdev event can be generated while enslaving a device
+	 * before netdev_rx_handler_register is called in which case
+	 * slave will be NULL
+	 */
+	if (!slave)
+		return NOTIFY_DONE;
+	bond_dev = slave->bond->dev;
+	bond = slave->bond;
+
 	switch (event) {
 	case NETDEV_UNREGISTER:
 		if (bond->setup_by_slave)
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index f32b9fc6a98..9aa0c64c33c 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -929,6 +929,7 @@ static int mcp251x_open(struct net_device *net)
 	struct mcp251x_priv *priv = netdev_priv(net);
 	struct spi_device *spi = priv->spi;
 	struct mcp251x_platform_data *pdata = spi->dev.platform_data;
+	unsigned long flags;
 	int ret;
 
 	ret = open_candev(net);
@@ -945,9 +946,14 @@ static int mcp251x_open(struct net_device *net)
 	priv->tx_skb = NULL;
 	priv->tx_len = 0;
 
+	flags = IRQF_ONESHOT;
+	if (pdata->irq_flags)
+		flags |= pdata->irq_flags;
+	else
+		flags |= IRQF_TRIGGER_FALLING;
+
 	ret = request_threaded_irq(spi->irq, NULL, mcp251x_can_ist,
-		  pdata->irq_flags ? pdata->irq_flags : IRQF_TRIGGER_FALLING,
-		  DEVICE_NAME, priv);
+				   flags, DEVICE_NAME, priv);
 	if (ret) {
 		dev_err(&spi->dev, "failed to acquire irq %d\n", spi->irq);
 		if (pdata->transceiver_enable)
diff --git a/drivers/net/can/sja1000/sja1000_of_platform.c b/drivers/net/can/sja1000/sja1000_of_platform.c
index 6433b81256c..8e0c4a00193 100644
--- a/drivers/net/can/sja1000/sja1000_of_platform.c
+++ b/drivers/net/can/sja1000/sja1000_of_platform.c
@@ -96,8 +96,8 @@ static int sja1000_ofp_probe(struct platform_device *ofdev)
 	struct net_device *dev;
 	struct sja1000_priv *priv;
 	struct resource res;
-	const u32 *prop;
-	int err, irq, res_size, prop_size;
+	u32 prop;
+	int err, irq, res_size;
 	void __iomem *base;
 
 	err = of_address_to_resource(np, 0, &res);
@@ -138,27 +138,27 @@ static int sja1000_ofp_probe(struct platform_device *ofdev)
 	priv->read_reg = sja1000_ofp_read_reg;
 	priv->write_reg = sja1000_ofp_write_reg;
 
-	prop = of_get_property(np, "nxp,external-clock-frequency", &prop_size);
-	if (prop && (prop_size ==  sizeof(u32)))
-		priv->can.clock.freq = *prop / 2;
+	err = of_property_read_u32(np, "nxp,external-clock-frequency", &prop);
+	if (!err)
+		priv->can.clock.freq = prop / 2;
 	else
 		priv->can.clock.freq = SJA1000_OFP_CAN_CLOCK; /* default */
 
-	prop = of_get_property(np, "nxp,tx-output-mode", &prop_size);
-	if (prop && (prop_size == sizeof(u32)))
-		priv->ocr |= *prop & OCR_MODE_MASK;
+	err = of_property_read_u32(np, "nxp,tx-output-mode", &prop);
+	if (!err)
+		priv->ocr |= prop & OCR_MODE_MASK;
 	else
 		priv->ocr |= OCR_MODE_NORMAL; /* default */
 
-	prop = of_get_property(np, "nxp,tx-output-config", &prop_size);
-	if (prop && (prop_size == sizeof(u32)))
-		priv->ocr |= (*prop << OCR_TX_SHIFT) & OCR_TX_MASK;
+	err = of_property_read_u32(np, "nxp,tx-output-config", &prop);
+	if (!err)
+		priv->ocr |= (prop << OCR_TX_SHIFT) & OCR_TX_MASK;
 	else
 		priv->ocr |= OCR_TX0_PULLDOWN; /* default */
 
-	prop = of_get_property(np, "nxp,clock-out-frequency", &prop_size);
-	if (prop && (prop_size == sizeof(u32)) && *prop) {
-		u32 divider = priv->can.clock.freq * 2 / *prop;
+	err = of_property_read_u32(np, "nxp,clock-out-frequency", &prop);
+	if (!err && prop) {
+		u32 divider = priv->can.clock.freq * 2 / prop;
 
 		if (divider > 1)
 			priv->cdr |= divider / 2 - 1;
@@ -168,8 +168,7 @@ static int sja1000_ofp_probe(struct platform_device *ofdev)
 		priv->cdr |= CDR_CLK_OFF; /* default */
 	}
 
-	prop = of_get_property(np, "nxp,no-comparator-bypass", NULL);
-	if (!prop)
+	if (!of_property_read_bool(np, "nxp,no-comparator-bypass"))
 		priv->cdr |= CDR_CBP; /* default */
 
 	priv->irq_flags = IRQF_SHARED;
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 08e54f3d288..2886c9b63f9 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -759,8 +759,9 @@ static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
 
 	if (vlan_tx_tag_present(skb)) {
 		vlan_tag = be_get_tx_vlan_tag(adapter, skb);
-		__vlan_put_tag(skb, vlan_tag);
-		skb->vlan_tci = 0;
+		skb = __vlan_put_tag(skb, vlan_tag);
+		if (skb)
+			skb->vlan_tci = 0;
 	}
 
 	return skb;
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index f292c3aa423..73195f643c9 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -1002,6 +1002,7 @@ static void fec_enet_adjust_link(struct net_device *ndev)
 	} else {
 		if (fep->link) {
 			fec_stop(ndev);
+			fep->link = phy_dev->link;
 			status_change = 1;
 		}
 	}
diff --git a/drivers/net/ethernet/marvell/Kconfig b/drivers/net/ethernet/marvell/Kconfig
index edfba937092..434e33c527d 100644
--- a/drivers/net/ethernet/marvell/Kconfig
+++ b/drivers/net/ethernet/marvell/Kconfig
@@ -33,6 +33,7 @@ config MV643XX_ETH
 
 config MVMDIO
 	tristate "Marvell MDIO interface support"
+	select PHYLIB
 	---help---
 	  This driver supports the MDIO interface found in the network
 	  interface units of the Marvell EBU SoCs (Kirkwood, Orion5x,
@@ -45,7 +46,6 @@ config MVMDIO
 config MVNETA
 	tristate "Marvell Armada 370/XP network interface support"
 	depends on MACH_ARMADA_370_XP
-	select PHYLIB
 	select MVMDIO
 	---help---
 	  This driver supports the network interface units in the
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 1e628ce5720..a47a097c21e 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -374,7 +374,6 @@ static int rxq_number = 8;
 static int txq_number = 8;
 
 static int rxq_def;
-static int txq_def;
 
 #define MVNETA_DRIVER_NAME "mvneta"
 #define MVNETA_DRIVER_VERSION "1.0"
@@ -1475,7 +1474,8 @@ error:
 static int mvneta_tx(struct sk_buff *skb, struct net_device *dev)
 {
 	struct mvneta_port *pp = netdev_priv(dev);
-	struct mvneta_tx_queue *txq = &pp->txqs[txq_def];
+	u16 txq_id = skb_get_queue_mapping(skb);
+	struct mvneta_tx_queue *txq = &pp->txqs[txq_id];
 	struct mvneta_tx_desc *tx_desc;
 	struct netdev_queue *nq;
 	int frags = 0;
@@ -1485,7 +1485,7 @@ static int mvneta_tx(struct sk_buff *skb, struct net_device *dev)
 		goto out;
 
 	frags = skb_shinfo(skb)->nr_frags + 1;
-	nq    = netdev_get_tx_queue(dev, txq_def);
+	nq    = netdev_get_tx_queue(dev, txq_id);
 
 	/* Get a descriptor for the first part of the packet */
 	tx_desc = mvneta_txq_next_desc_get(txq);
@@ -2689,7 +2689,7 @@ static int mvneta_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	dev = alloc_etherdev_mq(sizeof(struct mvneta_port), 8);
+	dev = alloc_etherdev_mqs(sizeof(struct mvneta_port), txq_number, rxq_number);
 	if (!dev)
 		return -ENOMEM;
 
@@ -2844,4 +2844,3 @@ module_param(rxq_number, int, S_IRUGO);
 module_param(txq_number, int, S_IRUGO);
 
 module_param(rxq_def, int, S_IRUGO);
-module_param(txq_def, int, S_IRUGO);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
index 987fb6f8adc..5ef328af61d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c
@@ -200,10 +200,10 @@ beacon_err:
 	}
 
 	err = qlcnic_config_led(adapter, b_state, b_rate);
-	if (!err)
+	if (!err) {
 		err = len;
-	else
 		ahw->beacon_state = b_state;
+	}
 
 	if (test_and_clear_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state))
 		qlcnic_diag_free_res(adapter->netdev, max_sds_rings);
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
index 0c74a702d46..50617c5a0bd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
@@ -149,6 +149,7 @@ void dwmac_mmc_intr_all_mask(void __iomem *ioaddr)
 {
 	writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_INTR_MASK);
 	writel(MMC_DEFAULT_MASK, ioaddr + MMC_TX_INTR_MASK);
+	writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_IPC_INTR_MASK);
 }
 
 /* This reads the MAC core counters (if actaully supported).
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 80cad06e5eb..4781d3d8e18 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1380,7 +1380,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
 			memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
 
 		if (data->dual_emac) {
-			if (of_property_read_u32(node, "dual_emac_res_vlan",
+			if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
 						 &prop)) {
 				pr_err("Missing dual_emac_res_vlan in DT.\n");
 				slave_data->dual_emac_res_vlan = i+1;
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index b7c457adc0d..729ed533bb3 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1594,7 +1594,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
 
 		if (tun->flags & TUN_TAP_MQ &&
 		    (tun->numqueues + tun->numdisabled > 1))
-			return err;
+			return -EBUSY;
 	}
 	else {
 		char *name;
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index 16c84299729..6bd91676d2c 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -134,7 +134,7 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb
 		goto error;
 
 	if (skb) {
-		if (skb->len <= sizeof(ETH_HLEN))
+		if (skb->len <= ETH_HLEN)
 			goto error;
 
 		/* mapping VLANs to MBIM sessions:
diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h
index 01d25e6fc79..0214c4c146f 100644
--- a/include/linux/netfilter/ipset/ip_set_ahash.h
+++ b/include/linux/netfilter/ipset/ip_set_ahash.h
@@ -291,6 +291,7 @@ ip_set_hash_destroy(struct ip_set *set)
 #define type_pf_data_tlist	TOKEN(TYPE, PF, _data_tlist)
 #define type_pf_data_next	TOKEN(TYPE, PF, _data_next)
 #define type_pf_data_flags	TOKEN(TYPE, PF, _data_flags)
+#define type_pf_data_reset_flags TOKEN(TYPE, PF, _data_reset_flags)
 #ifdef IP_SET_HASH_WITH_NETS
 #define type_pf_data_match	TOKEN(TYPE, PF, _data_match)
 #else
@@ -385,9 +386,9 @@ type_pf_resize(struct ip_set *set, bool retried)
 	struct ip_set_hash *h = set->data;
 	struct htable *t, *orig = h->table;
 	u8 htable_bits = orig->htable_bits;
-	const struct type_pf_elem *data;
+	struct type_pf_elem *data;
 	struct hbucket *n, *m;
-	u32 i, j;
+	u32 i, j, flags = 0;
 	int ret;
 
 retry:
@@ -412,9 +413,16 @@ retry:
 		n = hbucket(orig, i);
 		for (j = 0; j < n->pos; j++) {
 			data = ahash_data(n, j);
+#ifdef IP_SET_HASH_WITH_NETS
+			flags = 0;
+			type_pf_data_reset_flags(data, &flags);
+#endif
 			m = hbucket(t, HKEY(data, h->initval, htable_bits));
-			ret = type_pf_elem_add(m, data, AHASH_MAX(h), 0);
+			ret = type_pf_elem_add(m, data, AHASH_MAX(h), flags);
 			if (ret < 0) {
+#ifdef IP_SET_HASH_WITH_NETS
+				type_pf_data_flags(data, flags);
+#endif
 				read_unlock_bh(&set->lock);
 				ahash_destroy(t);
 				if (ret == -EAGAIN)
@@ -836,9 +844,9 @@ type_pf_tresize(struct ip_set *set, bool retried)
 	struct ip_set_hash *h = set->data;
 	struct htable *t, *orig = h->table;
 	u8 htable_bits = orig->htable_bits;
-	const struct type_pf_elem *data;
+	struct type_pf_elem *data;
 	struct hbucket *n, *m;
-	u32 i, j;
+	u32 i, j, flags = 0;
 	int ret;
 
 	/* Try to cleanup once */
@@ -873,10 +881,17 @@ retry:
 		n = hbucket(orig, i);
 		for (j = 0; j < n->pos; j++) {
 			data = ahash_tdata(n, j);
+#ifdef IP_SET_HASH_WITH_NETS
+			flags = 0;
+			type_pf_data_reset_flags(data, &flags);
+#endif
 			m = hbucket(t, HKEY(data, h->initval, htable_bits));
-			ret = type_pf_elem_tadd(m, data, AHASH_MAX(h), 0,
-						ip_set_timeout_get(type_pf_data_timeout(data)));
+			ret = type_pf_elem_tadd(m, data, AHASH_MAX(h), flags,
+				ip_set_timeout_get(type_pf_data_timeout(data)));
 			if (ret < 0) {
+#ifdef IP_SET_HASH_WITH_NETS
+				type_pf_data_flags(data, flags);
+#endif
 				read_unlock_bh(&set->lock);
 				ahash_destroy(t);
 				if (ret == -EAGAIN)
@@ -1187,6 +1202,7 @@ type_pf_gc_init(struct ip_set *set)
 #undef type_pf_data_tlist
 #undef type_pf_data_next
 #undef type_pf_data_flags
+#undef type_pf_data_reset_flags
 #undef type_pf_data_match
 
 #undef type_pf_elem
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 40be2a0d8ae..84a6440f1f1 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -199,6 +199,7 @@ extern bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
 /* Device notifier */
 extern int register_inet6addr_notifier(struct notifier_block *nb);
 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
+extern int inet6addr_notifier_call_chain(unsigned long val, void *v);
 
 extern void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex,
 					 struct ipv6_devconf *devconf);
diff --git a/net/802/mrp.c b/net/802/mrp.c
index a4cc3229952..e085bcc754f 100644
--- a/net/802/mrp.c
+++ b/net/802/mrp.c
@@ -870,8 +870,12 @@ void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *appl)
 	 * all pending messages before the applicant is gone.
 	 */
 	del_timer_sync(&app->join_timer);
+
+	spin_lock(&app->lock);
 	mrp_mad_event(app, MRP_EVENT_TX);
 	mrp_pdu_queue(app);
+	spin_unlock(&app->lock);
+
 	mrp_queue_xmit(app);
 
 	dev_mc_del(dev, appl->group_address);
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index ef1b91431c6..459dab22b3f 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -67,7 +67,8 @@ void br_port_carrier_check(struct net_bridge_port *p)
 	struct net_device *dev = p->dev;
 	struct net_bridge *br = p->br;
 
-	if (netif_running(dev) && netif_oper_up(dev))
+	if (!(p->flags & BR_ADMIN_COST) &&
+	    netif_running(dev) && netif_oper_up(dev))
 		p->path_cost = port_cost(dev);
 
 	if (!netif_running(br->dev))
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 3cbf5beb3d4..d2c043a857b 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -156,6 +156,7 @@ struct net_bridge_port
 #define BR_BPDU_GUARD           0x00000002
 #define BR_ROOT_BLOCK		0x00000004
 #define BR_MULTICAST_FAST_LEAVE	0x00000008
+#define BR_ADMIN_COST		0x00000010
 
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 	u32				multicast_startup_queries_sent;
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 0bdb4ebd362..d45e760141b 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -288,6 +288,7 @@ int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost)
 	    path_cost > BR_MAX_PATH_COST)
 		return -ERANGE;
 
+	p->flags |= BR_ADMIN_COST;
 	p->path_cost = path_cost;
 	br_configuration_update(p->br);
 	br_port_state_selection(p->br);
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 3b4f0cd2e63..4cfe34d4cc9 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -139,8 +139,6 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 
 	/* skb is pure payload to encrypt */
 
-	err = -ENOMEM;
-
 	esp = x->data;
 	aead = esp->aead;
 	alen = crypto_aead_authsize(aead);
@@ -176,8 +174,10 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 	}
 
 	tmp = esp_alloc_tmp(aead, nfrags + sglists, seqhilen);
-	if (!tmp)
+	if (!tmp) {
+		err = -ENOMEM;
 		goto error;
+	}
 
 	seqhi = esp_tmp_seqhi(tmp);
 	iv = esp_tmp_iv(aead, tmp, seqhilen);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index a6445b843ef..52c273ea05c 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -248,8 +248,7 @@ static void ip_expire(unsigned long arg)
 		if (!head->dev)
 			goto out_rcu_unlock;
 
-		/* skb dst is stale, drop it, and perform route lookup again */
-		skb_dst_drop(head);
+		/* skb has no dst, perform route lookup again */
 		iph = ip_hdr(head);
 		err = ip_route_input_noref(head, iph->daddr, iph->saddr,
 					   iph->tos, head->dev);
@@ -523,9 +522,16 @@ found:
 		qp->q.max_size = skb->len + ihl;
 
 	if (qp->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&
-	    qp->q.meat == qp->q.len)
-		return ip_frag_reasm(qp, prev, dev);
+	    qp->q.meat == qp->q.len) {
+		unsigned long orefdst = skb->_skb_refdst;
 
+		skb->_skb_refdst = 0UL;
+		err = ip_frag_reasm(qp, prev, dev);
+		skb->_skb_refdst = orefdst;
+		return err;
+	}
+
+	skb_dst_drop(skb);
 	inet_frag_lru_move(&qp->q);
 	return -EINPROGRESS;
 
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index ef54377fb11..397e0f69435 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -349,8 +349,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
 	 * hasn't changed since we received the original syn, but I see
 	 * no easy way to do this.
 	 */
-	flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk),
-			   RT_SCOPE_UNIVERSE, IPPROTO_TCP,
+	flowi4_init_output(&fl4, sk->sk_bound_dev_if, sk->sk_mark,
+			   RT_CONN_FLAGS(sk), RT_SCOPE_UNIVERSE, IPPROTO_TCP,
 			   inet_sk_flowi_flags(sk),
 			   (opt && opt->srr) ? opt->faddr : ireq->rmt_addr,
 			   ireq->loc_addr, th->source, th->dest);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index b44cf81d817..509912a5ff9 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2388,8 +2388,12 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
 	 */
 	TCP_SKB_CB(skb)->when = tcp_time_stamp;
 
-	/* make sure skb->data is aligned on arches that require it */
-	if (unlikely(NET_IP_ALIGN && ((unsigned long)skb->data & 3))) {
+	/* make sure skb->data is aligned on arches that require it
+	 * and check if ack-trimming & collapsing extended the headroom
+	 * beyond what csum_start can cover.
+	 */
+	if (unlikely((NET_IP_ALIGN && ((unsigned long)skb->data & 3)) ||
+		     skb_headroom(skb) >= 0xFFFF)) {
 		struct sk_buff *nskb = __pskb_copy(skb, MAX_TCP_HEADER,
 						   GFP_ATOMIC);
 		return nskb ? tcp_transmit_skb(sk, nskb, 0, GFP_ATOMIC) :
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a459c4f5b76..dae802c0af7 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -168,8 +168,6 @@ static void inet6_prefix_notify(int event, struct inet6_dev *idev,
 static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
 			       struct net_device *dev);
 
-static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
-
 static struct ipv6_devconf ipv6_devconf __read_mostly = {
 	.forwarding		= 0,
 	.hop_limit		= IPV6_DEFAULT_HOPLIMIT,
@@ -837,7 +835,7 @@ out2:
 	rcu_read_unlock_bh();
 
 	if (likely(err == 0))
-		atomic_notifier_call_chain(&inet6addr_chain, NETDEV_UP, ifa);
+		inet6addr_notifier_call_chain(NETDEV_UP, ifa);
 	else {
 		kfree(ifa);
 		ifa = ERR_PTR(err);
@@ -927,7 +925,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
 
 	ipv6_ifa_notify(RTM_DELADDR, ifp);
 
-	atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifp);
+	inet6addr_notifier_call_chain(NETDEV_DOWN, ifp);
 
 	/*
 	 * Purge or update corresponding prefix
@@ -2988,7 +2986,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
 		if (state != INET6_IFADDR_STATE_DEAD) {
 			__ipv6_ifa_notify(RTM_DELADDR, ifa);
-			atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);
+			inet6addr_notifier_call_chain(NETDEV_DOWN, ifa);
 		}
 		in6_ifa_put(ifa);
 
@@ -4869,22 +4867,6 @@ static struct pernet_operations addrconf_ops = {
 	.exit = addrconf_exit_net,
 };
 
-/*
- *      Device notifier
- */
-
-int register_inet6addr_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&inet6addr_chain, nb);
-}
-EXPORT_SYMBOL(register_inet6addr_notifier);
-
-int unregister_inet6addr_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&inet6addr_chain, nb);
-}
-EXPORT_SYMBOL(unregister_inet6addr_notifier);
-
 static struct rtnl_af_ops inet6_ops = {
 	.family		  = AF_INET6,
 	.fill_link_af	  = inet6_fill_link_af,
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index d051e5f4bf3..72104562c86 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -78,3 +78,22 @@ int __ipv6_addr_type(const struct in6_addr *addr)
 }
 EXPORT_SYMBOL(__ipv6_addr_type);
 
+static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
+
+int register_inet6addr_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&inet6addr_chain, nb);
+}
+EXPORT_SYMBOL(register_inet6addr_notifier);
+
+int unregister_inet6addr_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&inet6addr_chain, nb);
+}
+EXPORT_SYMBOL(unregister_inet6addr_notifier);
+
+int inet6addr_notifier_call_chain(unsigned long val, void *v)
+{
+	return atomic_notifier_call_chain(&inet6addr_chain, val, v);
+}
+EXPORT_SYMBOL(inet6addr_notifier_call_chain);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 196ab9347ad..0ba10e53a62 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -330,9 +330,17 @@ found:
 	}
 
 	if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&
-	    fq->q.meat == fq->q.len)
-		return ip6_frag_reasm(fq, prev, dev);
+	    fq->q.meat == fq->q.len) {
+		int res;
+		unsigned long orefdst = skb->_skb_refdst;
+
+		skb->_skb_refdst = 0UL;
+		res = ip6_frag_reasm(fq, prev, dev);
+		skb->_skb_refdst = orefdst;
+		return res;
+	}
 
+	skb_dst_drop(skb);
 	inet_frag_lru_move(&fq->q);
 	return -1;
 
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index f2627226a08..10a30b4fc7d 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -104,6 +104,15 @@ hash_ipportnet4_data_flags(struct hash_ipportnet4_elem *dst, u32 flags)
 	dst->nomatch = !!(flags & IPSET_FLAG_NOMATCH);
 }
 
+static inline void
+hash_ipportnet4_data_reset_flags(struct hash_ipportnet4_elem *dst, u32 *flags)
+{
+	if (dst->nomatch) {
+		*flags = IPSET_FLAG_NOMATCH;
+		dst->nomatch = 0;
+	}
+}
+
 static inline int
 hash_ipportnet4_data_match(const struct hash_ipportnet4_elem *elem)