15 files changed, 174 insertions, 52 deletions

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index a9d597f28023..485462d3087f 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1963,6 +1963,9 @@ static int __bond_release_one(struct net_device *bond_dev,
 	if (!bond_has_slaves(bond)) {
 		bond_set_carrier(bond);
 		eth_hw_addr_random(bond_dev);
+		bond->nest_level = SINGLE_DEPTH_NESTING;
+	} else {
+		bond->nest_level = dev_get_nest_level(bond_dev) + 1;
 	}
 
 	unblock_netpoll_tx();
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 8a517d8fb9d1..8dca2c949e73 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2403,6 +2403,107 @@ static int mv88e6xxx_stats_setup(struct mv88e6xxx_chip *chip)
 	return mv88e6xxx_g1_stats_clear(chip);
 }
 
+/* The mv88e6390 has some hidden registers used for debug and
+ * development. The errata also makes use of them.
+ */
+static int mv88e6390_hidden_write(struct mv88e6xxx_chip *chip, int port,
+				  int reg, u16 val)
+{
+	u16 ctrl;
+	int err;
+
+	err = mv88e6xxx_port_write(chip, PORT_RESERVED_1A_DATA_PORT,
+				   PORT_RESERVED_1A, val);
+	if (err)
+		return err;
+
+	ctrl = PORT_RESERVED_1A_BUSY | PORT_RESERVED_1A_WRITE |
+	       PORT_RESERVED_1A_BLOCK | port << PORT_RESERVED_1A_PORT_SHIFT |
+	       reg;
+
+	return mv88e6xxx_port_write(chip, PORT_RESERVED_1A_CTRL_PORT,
+				    PORT_RESERVED_1A, ctrl);
+}
+
+static int mv88e6390_hidden_wait(struct mv88e6xxx_chip *chip)
+{
+	return mv88e6xxx_wait(chip, PORT_RESERVED_1A_CTRL_PORT,
+			      PORT_RESERVED_1A, PORT_RESERVED_1A_BUSY);
+}
+
+
+static int mv88e6390_hidden_read(struct mv88e6xxx_chip *chip, int port,
+				  int reg, u16 *val)
+{
+	u16 ctrl;
+	int err;
+
+	ctrl = PORT_RESERVED_1A_BUSY | PORT_RESERVED_1A_READ |
+	       PORT_RESERVED_1A_BLOCK | port << PORT_RESERVED_1A_PORT_SHIFT |
+	       reg;
+
+	err = mv88e6xxx_port_write(chip, PORT_RESERVED_1A_CTRL_PORT,
+				   PORT_RESERVED_1A, ctrl);
+	if (err)
+		return err;
+
+	err = mv88e6390_hidden_wait(chip);
+	if (err)
+		return err;
+
+	return 	mv88e6xxx_port_read(chip, PORT_RESERVED_1A_DATA_PORT,
+				    PORT_RESERVED_1A, val);
+}
+
+/* Check if the errata has already been applied. */
+static bool mv88e6390_setup_errata_applied(struct mv88e6xxx_chip *chip)
+{
+	int port;
+	int err;
+	u16 val;
+
+	for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
+		err = mv88e6390_hidden_read(chip, port, 0, &val);
+		if (err) {
+			dev_err(chip->dev,
+				"Error reading hidden register: %d\n", err);
+			return false;
+		}
+		if (val != 0x01c0)
+			return false;
+	}
+
+	return true;
+}
+
+/* The 6390 copper ports have an errata which require poking magic
+ * values into undocumented hidden registers and then performing a
+ * software reset.
+ */
+static int mv88e6390_setup_errata(struct mv88e6xxx_chip *chip)
+{
+	int port;
+	int err;
+
+	if (mv88e6390_setup_errata_applied(chip))
+		return 0;
+
+	/* Set the ports into blocking mode */
+	for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
+		err = mv88e6xxx_port_set_state(chip, port, BR_STATE_DISABLED);
+		if (err)
+			return err;
+	}
+
+	for (port = 0; port < mv88e6xxx_num_ports(chip); port++) {
+		err = mv88e6390_hidden_write(chip, port, 0, 0x01c0);
+		if (err)
+			return err;
+	}
+
+	return mv88e6xxx_software_reset(chip);
+}
+
 static int mv88e6xxx_setup(struct dsa_switch *ds)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
@@ -2415,6 +2516,12 @@ static int mv88e6xxx_setup(struct dsa_switch *ds)
 
 	mutex_lock(&chip->reg_lock);
 
+	if (chip->info->ops->setup_errata) {
+		err = chip->info->ops->setup_errata(chip);
+		if (err)
+			goto unlock;
+	}
+
 	/* Cache the cmode of each port. */
 	for (i = 0; i < mv88e6xxx_num_ports(chip); i++) {
 		if (chip->info->ops->port_get_cmode) {
@@ -3226,6 +3333,7 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
 
 static const struct mv88e6xxx_ops mv88e6190_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
@@ -3269,6 +3377,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
 
 static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
@@ -3312,6 +3421,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 
 static const struct mv88e6xxx_ops mv88e6191_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
@@ -3404,6 +3514,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 
 static const struct mv88e6xxx_ops mv88e6290_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
@@ -3709,6 +3820,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 
 static const struct mv88e6xxx_ops mv88e6390_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
@@ -3756,6 +3868,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 
 static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
+	.setup_errata = mv88e6390_setup_errata,
 	.irl_init_all = mv88e6390_g2_irl_init_all,
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
 	.set_eeprom = mv88e6xxx_g2_set_eeprom8,
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index f9ecb7872d32..546651d8c3e1 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -300,6 +300,11 @@ struct mv88e6xxx_mdio_bus {
 };
 
 struct mv88e6xxx_ops {
+	/* Switch Setup Errata, called early in the switch setup to
+	 * allow any errata actions to be performed
+	 */
+	int (*setup_errata)(struct mv88e6xxx_chip *chip);
+
 	int (*ieee_pri_map)(struct mv88e6xxx_chip *chip);
 	int (*ip_pri_map)(struct mv88e6xxx_chip *chip);
 
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 0d81866d0e4a..e583641de758 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -251,6 +251,16 @@
 /* Offset 0x19: Port IEEE Priority Remapping Registers (4-7) */
 #define MV88E6095_PORT_IEEE_PRIO_REMAP_4567	0x19
 
+/* Offset 0x1a: Magic undocumented errata register */
+#define PORT_RESERVED_1A			0x1a
+#define PORT_RESERVED_1A_BUSY			BIT(15)
+#define PORT_RESERVED_1A_WRITE			BIT(14)
+#define PORT_RESERVED_1A_READ			0
+#define PORT_RESERVED_1A_PORT_SHIFT		5
+#define PORT_RESERVED_1A_BLOCK			(0xf << 10)
+#define PORT_RESERVED_1A_CTRL_PORT		4
+#define PORT_RESERVED_1A_DATA_PORT		5
+
 int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg,
 			u16 *val);
 int mv88e6xxx_port_write(struct mv88e6xxx_chip *chip, int port, int reg,
diff --git a/drivers/net/ethernet/chelsio/cxgb3/sge.c b/drivers/net/ethernet/chelsio/cxgb3/sge.c
index 20b6e1b3f5e3..6a80b44f2e71 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c
@@ -2381,7 +2381,7 @@ no_mem:
 					lro_add_page(adap, qs, fl,
 						     G_RSPD_LEN(len),
 						     flags & F_RSPD_EOP);
-					 goto next_fl;
+					goto next_fl;
 				}
 
 				skb = get_packet_pg(adap, fl, q,
@@ -3214,11 +3214,13 @@ void t3_start_sge_timers(struct adapter *adap)
 	for (i = 0; i < SGE_QSETS; ++i) {
 		struct sge_qset *q = &adap->sge.qs[i];
 
-	if (q->tx_reclaim_timer.function)
-		mod_timer(&q->tx_reclaim_timer, jiffies + TX_RECLAIM_PERIOD);
+		if (q->tx_reclaim_timer.function)
+			mod_timer(&q->tx_reclaim_timer,
+				  jiffies + TX_RECLAIM_PERIOD);
 
-	if (q->rx_reclaim_timer.function)
-		mod_timer(&q->rx_reclaim_timer, jiffies + RX_RECLAIM_PERIOD);
+		if (q->rx_reclaim_timer.function)
+			mod_timer(&q->rx_reclaim_timer,
+				  jiffies + RX_RECLAIM_PERIOD);
 	}
 }
 
diff --git a/drivers/net/ethernet/chelsio/cxgb3/t3_hw.c b/drivers/net/ethernet/chelsio/cxgb3/t3_hw.c
index 080918af773c..0a9f2c596624 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/t3_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/t3_hw.c
@@ -1082,7 +1082,7 @@ int t3_check_fw_version(struct adapter *adapter)
 		CH_WARN(adapter, "found newer FW version(%u.%u), "
 		        "driver compiled for version %u.%u\n", major, minor,
 			FW_VERSION_MAJOR, FW_VERSION_MINOR);
-			return 0;
+		return 0;
 	}
 	return -EINVAL;
 }
@@ -3619,7 +3619,7 @@ int t3_reset_adapter(struct adapter *adapter)
 
 static int init_parity(struct adapter *adap)
 {
-		int i, err, addr;
+	int i, err, addr;
 
 	if (t3_read_reg(adap, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY)
 		return -EBUSY;
@@ -3806,6 +3806,6 @@ int t3_replay_prep_adapter(struct adapter *adapter)
 		p->phy.ops->power_down(&p->phy, 1);
 	}
 
-return 0;
+	return 0;
 }
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
index 9f9d6cae39d5..58a039c3224a 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
@@ -378,10 +378,10 @@ static void cxgb4_init_ptp_timer(struct adapter *adapter)
 	int err;
 
 	memset(&c, 0, sizeof(c));
-		c.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PTP_CMD) |
-					     FW_CMD_REQUEST_F |
-					     FW_CMD_WRITE_F |
-					     FW_PTP_CMD_PORTID_V(0));
+	c.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PTP_CMD) |
+				     FW_CMD_REQUEST_F |
+				     FW_CMD_WRITE_F |
+				     FW_PTP_CMD_PORTID_V(0));
 	c.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(sizeof(c) / 16));
 	c.u.scmd.sc = FW_PTP_SC_INIT_TIMER;
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
index 9a6065a3fa46..c041f44324db 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
@@ -78,7 +78,7 @@ static void free_msix_idx_in_bmap(struct adapter *adap, unsigned int msix_idx)
 	unsigned long flags;
 
 	spin_lock_irqsave(&bmap->lock, flags);
-	 __clear_bit(msix_idx, bmap->msix_bmap);
+	__clear_bit(msix_idx, bmap->msix_bmap);
 	spin_unlock_irqrestore(&bmap->lock, flags);
 }
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index e8c34292a0ec..2b03f6187a24 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -3794,7 +3794,7 @@ int t4_load_phy_fw(struct adapter *adap,
 	/* If we have version number support, then check to see if the adapter
 	 * already has up-to-date PHY firmware loaded.
 	 */
-	 if (phy_fw_version) {
+	if (phy_fw_version) {
 		new_phy_fw_vers = phy_fw_version(phy_fw_data, phy_fw_size);
 		ret = t4_phy_fw_ver(adap, &cur_phy_fw_ver);
 		if (ret < 0)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 399f565dd85a..2968d29a992f 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -258,11 +258,6 @@ static void mtk_phy_link_adjust(struct net_device *dev)
 
 	mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
 
-	if (dev->phydev->link)
-		netif_carrier_on(dev);
-	else
-		netif_carrier_off(dev);
-
 	if (!of_phy_is_fixed_link(mac->of_node))
 		phy_print_status(dev->phydev);
 }
@@ -347,17 +342,6 @@ static int mtk_phy_connect(struct net_device *dev)
 	if (mtk_phy_connect_node(eth, mac, np))
 		goto err_phy;
 
-	dev->phydev->autoneg = AUTONEG_ENABLE;
-	dev->phydev->speed = 0;
-	dev->phydev->duplex = 0;
-
-	phy_set_max_speed(dev->phydev, SPEED_1000);
-	phy_support_asym_pause(dev->phydev);
-	linkmode_copy(dev->phydev->advertising, dev->phydev->supported);
-	linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
-			 dev->phydev->advertising);
-	phy_start_aneg(dev->phydev);
-
 	of_node_put(np);
 
 	return 0;
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index a4fdad475594..18656c4094b3 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -856,10 +856,6 @@ static int tun_attach(struct tun_struct *tun, struct file *file,
 		err = 0;
 	}
 
-	rcu_assign_pointer(tfile->tun, tun);
-	rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile);
-	tun->numqueues++;
-
 	if (tfile->detached) {
 		tun_enable_queue(tfile);
 	} else {
@@ -876,6 +872,13 @@ static int tun_attach(struct tun_struct *tun, struct file *file,
 	 * refcnt.
 	 */
 
+	/* Publish tfile->tun and tun->tfiles only after we've fully
+	 * initialized tfile; otherwise we risk using half-initialized
+	 * object.
+	 */
+	rcu_assign_pointer(tfile->tun, tun);
+	rcu_assign_pointer(tun->tfiles[tun->numqueues], tfile);
+	tun->numqueues++;
 out:
 	return err;
 }
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 763a7b08df67..3e27a779f288 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -18,6 +18,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/slab.h>
+#include <linux/kmemleak.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -443,12 +444,14 @@ static struct neigh_hash_table *neigh_hash_alloc(unsigned int shift)
 	ret = kmalloc(sizeof(*ret), GFP_ATOMIC);
 	if (!ret)
 		return NULL;
-	if (size <= PAGE_SIZE)
+	if (size <= PAGE_SIZE) {
 		buckets = kzalloc(size, GFP_ATOMIC);
-	else
+	} else {
 		buckets = (struct neighbour __rcu **)
 			  __get_free_pages(GFP_ATOMIC | __GFP_ZERO,
 					   get_order(size));
+		kmemleak_alloc(buckets, size, 0, GFP_ATOMIC);
+	}
 	if (!buckets) {
 		kfree(ret);
 		return NULL;
@@ -468,10 +471,12 @@ static void neigh_hash_free_rcu(struct rcu_head *head)
 	size_t size = (1 << nht->hash_shift) * sizeof(struct neighbour *);
 	struct neighbour __rcu **buckets = nht->hash_buckets;
 
-	if (size <= PAGE_SIZE)
+	if (size <= PAGE_SIZE) {
 		kfree(buckets);
-	else
+	} else {
+		kmemleak_free(buckets);
 		free_pages((unsigned long)buckets, get_order(size));
+	}
 	kfree(nht);
 }
 
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index fffcc130900e..82f341e84fae 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -148,19 +148,17 @@ static void ip_cmsg_recv_security(struct msghdr *msg, struct sk_buff *skb)
 
 static void ip_cmsg_recv_dstaddr(struct msghdr *msg, struct sk_buff *skb)
 {
+	__be16 _ports[2], *ports;
 	struct sockaddr_in sin;
-	__be16 *ports;
-	int end;
-
-	end = skb_transport_offset(skb) + 4;
-	if (end > 0 && !pskb_may_pull(skb, end))
-		return;
 
 	/* All current transport protocols have the port numbers in the
 	 * first four bytes of the transport header and this function is
 	 * written with this assumption in mind.
 	 */
-	ports = (__be16 *)skb_transport_header(skb);
+	ports = skb_header_pointer(skb, skb_transport_offset(skb),
+				   sizeof(_ports), &_ports);
+	if (!ports)
+		return;
 
 	sin.sin_family = AF_INET;
 	sin.sin_addr.s_addr = ip_hdr(skb)->daddr;
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index f87dbc78b6bc..71a29e9c0620 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -226,7 +226,7 @@ static int tcp_write_timeout(struct sock *sk)
 	if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
 		if (icsk->icsk_retransmits) {
 			dst_negative_advice(sk);
-		} else if (!tp->syn_data && !tp->syn_fastopen) {
+		} else {
 			sk_rethink_txhash(sk);
 		}
 		retry_until = icsk->icsk_syn_retries ? : net->ipv4.sysctl_tcp_syn_retries;
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index bde08aa549f3..ee4a4e54d016 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -341,6 +341,7 @@ void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info)
 	skb_reset_network_header(skb);
 	iph = ipv6_hdr(skb);
 	iph->daddr = fl6->daddr;
+	ip6_flow_hdr(iph, 0, 0);
 
 	serr = SKB_EXT_ERR(skb);
 	serr->ee.ee_errno = err;
@@ -700,17 +701,15 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg,
 	}
 	if (np->rxopt.bits.rxorigdstaddr) {
 		struct sockaddr_in6 sin6;
-		__be16 *ports;
-		int end;
+		__be16 _ports[2], *ports;
 
-		end = skb_transport_offset(skb) + 4;
-		if (end <= 0 || pskb_may_pull(skb, end)) {
+		ports = skb_header_pointer(skb, skb_transport_offset(skb),
+					   sizeof(_ports), &_ports);
+		if (ports) {
 			/* All current transport protocols have the port numbers in the
 			 * first four bytes of the transport header and this function is
 			 * written with this assumption in mind.
 			 */
-			ports = (__be16 *)skb_transport_header(skb);
-
 			sin6.sin6_family = AF_INET6;
 			sin6.sin6_addr = ipv6_hdr(skb)->daddr;
 			sin6.sin6_port = ports[1];