9 files changed, 206 insertions, 119 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 1c6cf3a1a4f6..4d57f5e12b05 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -262,6 +262,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
 	}
 
 	kfree_skb(skb);
+	atomic_inc(&sk->sk_drops);
 	sk_mem_reclaim_partial(sk);
 
 	return err;
diff --git a/net/core/dev.c b/net/core/dev.c
index b8f74cfb1bfd..950c13fa60d2 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -193,18 +193,15 @@ static struct list_head ptype_all __read_mostly;	/* Taps */
 DEFINE_RWLOCK(dev_base_lock);
 EXPORT_SYMBOL(dev_base_lock);
 
-#define NETDEV_HASHBITS	8
-#define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
-
 static inline struct hlist_head *dev_name_hash(struct net *net, const char *name)
 {
 	unsigned hash = full_name_hash(name, strnlen(name, IFNAMSIZ));
-	return &net->dev_name_head[hash & ((1 << NETDEV_HASHBITS) - 1)];
+	return &net->dev_name_head[hash & (NETDEV_HASHENTRIES - 1)];
 }
 
 static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex)
 {
-	return &net->dev_index_head[ifindex & ((1 << NETDEV_HASHBITS) - 1)];
+	return &net->dev_index_head[ifindex & (NETDEV_HASHENTRIES - 1)];
 }
 
 /* Device list insertion */
@@ -1791,13 +1788,25 @@ EXPORT_SYMBOL(skb_tx_hash);
 static struct netdev_queue *dev_pick_tx(struct net_device *dev,
 					struct sk_buff *skb)
 {
-	const struct net_device_ops *ops = dev->netdev_ops;
-	u16 queue_index = 0;
+	u16 queue_index;
+	struct sock *sk = skb->sk;
 
-	if (ops->ndo_select_queue)
-		queue_index = ops->ndo_select_queue(dev, skb);
-	else if (dev->real_num_tx_queues > 1)
-		queue_index = skb_tx_hash(dev, skb);
+	if (sk_tx_queue_recorded(sk)) {
+		queue_index = sk_tx_queue_get(sk);
+	} else {
+		const struct net_device_ops *ops = dev->netdev_ops;
+
+		if (ops->ndo_select_queue) {
+			queue_index = ops->ndo_select_queue(dev, skb);
+		} else {
+			queue_index = 0;
+			if (dev->real_num_tx_queues > 1)
+				queue_index = skb_tx_hash(dev, skb);
+
+			if (sk && sk->sk_dst_cache)
+				sk_tx_queue_set(sk, queue_index);
+		}
+	}
 
 	skb_set_queue_mapping(skb, queue_index);
 	return netdev_get_tx_queue(dev, queue_index);
@@ -2291,7 +2300,7 @@ int netif_receive_skb(struct sk_buff *skb)
 	if (!skb->tstamp.tv64)
 		net_timestamp(skb);
 
-	if (skb->vlan_tci && vlan_hwaccel_do_receive(skb))
+	if (vlan_tx_tag_present(skb) && vlan_hwaccel_do_receive(skb))
 		return NET_RX_SUCCESS;
 
 	/* if we've gotten here through NAPI, check netpoll */
@@ -2604,20 +2613,13 @@ EXPORT_SYMBOL(napi_reuse_skb);
 
 struct sk_buff *napi_get_frags(struct napi_struct *napi)
 {
-	struct net_device *dev = napi->dev;
 	struct sk_buff *skb = napi->skb;
 
 	if (!skb) {
-		skb = netdev_alloc_skb(dev, GRO_MAX_HEAD + NET_IP_ALIGN);
-		if (!skb)
-			goto out;
-
-		skb_reserve(skb, NET_IP_ALIGN);
-
-		napi->skb = skb;
+		skb = netdev_alloc_skb_ip_align(napi->dev, GRO_MAX_HEAD);
+		if (skb)
+			napi->skb = skb;
 	}
-
-out:
 	return skb;
 }
 EXPORT_SYMBOL(napi_get_frags);
@@ -4836,6 +4838,12 @@ int register_netdevice(struct net_device *dev)
 		dev->features |= NETIF_F_GSO;
 
 	netdev_initialize_kobject(dev);
+
+	ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev);
+	ret = notifier_to_errno(ret);
+	if (ret)
+		goto err_uninit;
+
 	ret = netdev_register_kobject(dev);
 	if (ret)
 		goto err_uninit;
@@ -5483,7 +5491,7 @@ unsigned long netdev_increment_features(unsigned long all, unsigned long one,
 	one |= NETIF_F_ALL_CSUM;
 
 	one |= all & NETIF_F_ONE_FOR_ALL;
-	all &= one | NETIF_F_LLTX | NETIF_F_GSO;
+	all &= one | NETIF_F_LLTX | NETIF_F_GSO | NETIF_F_UFO;
 	all |= one & mask & NETIF_F_ONE_FOR_ALL;
 
 	return all;
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 4c12ddb5f5ee..d8aee584e8d1 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -198,13 +198,6 @@ static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
 		rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
 		if (rc >= 0)
 			info.n_priv_flags = rc;
-	} else {
-		/* code path for obsolete hooks */
-
-		if (ops->self_test_count)
-			info.testinfo_len = ops->self_test_count(dev);
-		if (ops->get_stats_count)
-			info.n_stats = ops->get_stats_count(dev);
 	}
 	if (ops->get_regs_len)
 		info.regdump_len = ops->get_regs_len(dev);
@@ -309,6 +302,26 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 	return ret;
 }
 
+static int ethtool_reset(struct net_device *dev, char __user *useraddr)
+{
+	struct ethtool_value reset;
+	int ret;
+
+	if (!dev->ethtool_ops->reset)
+		return -EOPNOTSUPP;
+
+	if (copy_from_user(&reset, useraddr, sizeof(reset)))
+		return -EFAULT;
+
+	ret = dev->ethtool_ops->reset(dev, &reset.data);
+	if (ret)
+		return ret;
+
+	if (copy_to_user(useraddr, &reset, sizeof(reset)))
+		return -EFAULT;
+	return 0;
+}
+
 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
 {
 	struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
@@ -684,16 +697,10 @@ static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
 	u64 *data;
 	int ret, test_len;
 
-	if (!ops->self_test)
-		return -EOPNOTSUPP;
-	if (!ops->get_sset_count && !ops->self_test_count)
+	if (!ops->self_test || !ops->get_sset_count)
 		return -EOPNOTSUPP;
 
-	if (ops->get_sset_count)
-		test_len = ops->get_sset_count(dev, ETH_SS_TEST);
-	else
-		/* code path for obsolete hook */
-		test_len = ops->self_test_count(dev);
+	test_len = ops->get_sset_count(dev, ETH_SS_TEST);
 	if (test_len < 0)
 		return test_len;
 	WARN_ON(test_len == 0);
@@ -728,36 +735,17 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
 	u8 *data;
 	int ret;
 
-	if (!ops->get_strings)
+	if (!ops->get_strings || !ops->get_sset_count)
 		return -EOPNOTSUPP;
 
 	if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
 		return -EFAULT;
 
-	if (ops->get_sset_count) {
-		ret = ops->get_sset_count(dev, gstrings.string_set);
-		if (ret < 0)
-			return ret;
-
-		gstrings.len = ret;
-	} else {
-		/* code path for obsolete hooks */
-
-		switch (gstrings.string_set) {
-		case ETH_SS_TEST:
-			if (!ops->self_test_count)
-				return -EOPNOTSUPP;
-			gstrings.len = ops->self_test_count(dev);
-			break;
-		case ETH_SS_STATS:
-			if (!ops->get_stats_count)
-				return -EOPNOTSUPP;
-			gstrings.len = ops->get_stats_count(dev);
-			break;
-		default:
-			return -EINVAL;
-		}
-	}
+	ret = ops->get_sset_count(dev, gstrings.string_set);
+	if (ret < 0)
+		return ret;
+
+	gstrings.len = ret;
 
 	data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
 	if (!data)
@@ -798,16 +786,10 @@ static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
 	u64 *data;
 	int ret, n_stats;
 
-	if (!ops->get_ethtool_stats)
-		return -EOPNOTSUPP;
-	if (!ops->get_sset_count && !ops->get_stats_count)
+	if (!ops->get_ethtool_stats || !ops->get_sset_count)
 		return -EOPNOTSUPP;
 
-	if (ops->get_sset_count)
-		n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
-	else
-		/* code path for obsolete hook */
-		n_stats = ops->get_stats_count(dev);
+	n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
 	if (n_stats < 0)
 		return n_stats;
 	WARN_ON(n_stats == 0);
@@ -1127,6 +1109,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
 	case ETHTOOL_FLASHDEV:
 		rc = ethtool_flash_device(dev, useraddr);
 		break;
+	case ETHTOOL_RESET:
+		rc = ethtool_reset(dev, useraddr);
+		break;
 	default:
 		rc = -EOPNOTSUPP;
 	}
diff --git a/net/core/filter.c b/net/core/filter.c
index d1d779ca096d..08db7b9143a3 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -303,6 +303,12 @@ load_b:
 		case SKF_AD_IFINDEX:
 			A = skb->dev->ifindex;
 			continue;
+		case SKF_AD_MARK:
+			A = skb->mark;
+			continue;
+		case SKF_AD_QUEUE:
+			A = skb->queue_mapping;
+			continue;
 		case SKF_AD_NLATTR: {
 			struct nlattr *nla;
 
diff --git a/net/core/gen_stats.c b/net/core/gen_stats.c
index 8569310268ab..393b1d8618e2 100644
--- a/net/core/gen_stats.c
+++ b/net/core/gen_stats.c
@@ -127,6 +127,7 @@ gnet_stats_copy_basic(struct gnet_dump *d, struct gnet_stats_basic_packed *b)
 /**
  * gnet_stats_copy_rate_est - copy rate estimator statistics into statistics TLV
  * @d: dumping handle
+ * @b: basic statistics
  * @r: rate estimator statistics
  *
  * Appends the rate estimator statistics to the top level TLV created by
@@ -136,8 +137,13 @@ gnet_stats_copy_basic(struct gnet_dump *d, struct gnet_stats_basic_packed *b)
  * if the room in the socket buffer was not sufficient.
  */
 int
-gnet_stats_copy_rate_est(struct gnet_dump *d, struct gnet_stats_rate_est *r)
+gnet_stats_copy_rate_est(struct gnet_dump *d,
+			 const struct gnet_stats_basic_packed *b,
+			 struct gnet_stats_rate_est *r)
 {
+	if (b && !gen_estimator_active(b, r))
+		return 0;
+
 	if (d->compat_tc_stats) {
 		d->tc_stats.bps = r->bps;
 		d->tc_stats.pps = r->pps;
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 427ded841224..753c420060df 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -130,6 +130,44 @@ static ssize_t show_carrier(struct device *dev,
 	return -EINVAL;
 }
 
+static ssize_t show_speed(struct device *dev,
+			  struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	int ret = -EINVAL;
+
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	if (netif_running(netdev) && netdev->ethtool_ops->get_settings) {
+		struct ethtool_cmd cmd = { ETHTOOL_GSET };
+
+		if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
+			ret = sprintf(buf, fmt_dec, ethtool_cmd_speed(&cmd));
+	}
+	rtnl_unlock();
+	return ret;
+}
+
+static ssize_t show_duplex(struct device *dev,
+			   struct device_attribute *attr, char *buf)
+{
+	struct net_device *netdev = to_net_dev(dev);
+	int ret = -EINVAL;
+
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	if (netif_running(netdev) && netdev->ethtool_ops->get_settings) {
+		struct ethtool_cmd cmd = { ETHTOOL_GSET };
+
+		if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
+			ret = sprintf(buf, "%s\n", cmd.duplex ? "full" : "half");
+	}
+	rtnl_unlock();
+	return ret;
+}
+
 static ssize_t show_dormant(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
@@ -259,6 +297,8 @@ static struct device_attribute net_class_attributes[] = {
 	__ATTR(address, S_IRUGO, show_address, NULL),
 	__ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
 	__ATTR(carrier, S_IRUGO, show_carrier, NULL),
+	__ATTR(speed, S_IRUGO, show_speed, NULL),
+	__ATTR(duplex, S_IRUGO, show_duplex, NULL),
 	__ATTR(dormant, S_IRUGO, show_dormant, NULL),
 	__ATTR(operstate, S_IRUGO, show_operstate, NULL),
 	__ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
@@ -503,9 +543,13 @@ int netdev_register_kobject(struct net_device *net)
 	*groups++ = &netstat_group;
 
 #ifdef CONFIG_WIRELESS_EXT_SYSFS
-	if (net->wireless_handlers || net->ieee80211_ptr)
+	if (net->ieee80211_ptr)
+		*groups++ = &wireless_group;
+#ifdef CONFIG_WIRELESS_EXT
+	else if (net->wireless_handlers)
 		*groups++ = &wireless_group;
 #endif
+#endif
 #endif /* CONFIG_SYSFS */
 
 	if (dev_net(net) != &init_net)
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 6eb8d47cbf3a..5ce017bf4afa 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3446,12 +3446,14 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 	txq = netdev_get_tx_queue(odev, queue_map);
 
 	__netif_tx_lock_bh(txq);
-	atomic_inc(&(pkt_dev->skb->users));
 
-	if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
+	if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
 		ret = NETDEV_TX_BUSY;
-	else
-		ret = (*xmit)(pkt_dev->skb, odev);
+		pkt_dev->last_ok = 0;
+		goto unlock;
+	}
+	atomic_inc(&(pkt_dev->skb->users));
+	ret = (*xmit)(pkt_dev->skb, odev);
 
 	switch (ret) {
 	case NETDEV_TX_OK:
@@ -3473,6 +3475,7 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 		atomic_dec(&(pkt_dev->skb->users));
 		pkt_dev->last_ok = 0;
 	}
+unlock:
 	__netif_tx_unlock_bh(txq);
 
 	/* If pkt_dev->count is zero, then run forever */
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index eb42873f2a3a..52ea418d5302 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -682,22 +682,33 @@ nla_put_failure:
 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 {
 	struct net *net = sock_net(skb->sk);
-	int idx;
-	int s_idx = cb->args[0];
+	int h, s_h;
+	int idx = 0, s_idx;
 	struct net_device *dev;
-
-	idx = 0;
-	for_each_netdev(net, dev) {
-		if (idx < s_idx)
-			goto cont;
-		if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
-				     NETLINK_CB(cb->skb).pid,
-				     cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
-			break;
+	struct hlist_head *head;
+	struct hlist_node *node;
+
+	s_h = cb->args[0];
+	s_idx = cb->args[1];
+
+	for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
+		idx = 0;
+		head = &net->dev_index_head[h];
+		hlist_for_each_entry(dev, node, head, index_hlist) {
+			if (idx < s_idx)
+				goto cont;
+			if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
+					     NETLINK_CB(cb->skb).pid,
+					     cb->nlh->nlmsg_seq, 0,
+					     NLM_F_MULTI) <= 0)
+				goto out;
 cont:
-		idx++;
+			idx++;
+		}
 	}
-	cb->args[0] = idx;
+out:
+	cb->args[1] = idx;
+	cb->args[0] = h;
 
 	return skb->len;
 }
@@ -910,9 +921,9 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	err = -EINVAL;
 	ifm = nlmsg_data(nlh);
 	if (ifm->ifi_index > 0)
-		dev = dev_get_by_index(net, ifm->ifi_index);
+		dev = __dev_get_by_index(net, ifm->ifi_index);
 	else if (tb[IFLA_IFNAME])
-		dev = dev_get_by_name(net, ifname);
+		dev = __dev_get_by_name(net, ifname);
 	else
 		goto errout;
 
@@ -922,11 +933,9 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	}
 
 	if ((err = validate_linkmsg(dev, tb)) < 0)
-		goto errout_dev;
+		goto errout;
 
 	err = do_setlink(dev, ifm, tb, ifname, 0);
-errout_dev:
-	dev_put(dev);
 errout:
 	return err;
 }
@@ -1154,6 +1163,7 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
 	struct net *net = sock_net(skb->sk);
 	struct ifinfomsg *ifm;
+	char ifname[IFNAMSIZ];
 	struct nlattr *tb[IFLA_MAX+1];
 	struct net_device *dev = NULL;
 	struct sk_buff *nskb;
@@ -1163,19 +1173,23 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 	if (err < 0)
 		return err;
 
+	if (tb[IFLA_IFNAME])
+		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+
 	ifm = nlmsg_data(nlh);
-	if (ifm->ifi_index > 0) {
-		dev = dev_get_by_index(net, ifm->ifi_index);
-		if (dev == NULL)
-			return -ENODEV;
-	} else
+	if (ifm->ifi_index > 0)
+		dev = __dev_get_by_index(net, ifm->ifi_index);
+	else if (tb[IFLA_IFNAME])
+		dev = __dev_get_by_name(net, ifname);
+	else
 		return -EINVAL;
 
+	if (dev == NULL)
+		return -ENODEV;
+
 	nskb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
-	if (nskb == NULL) {
-		err = -ENOBUFS;
-		goto errout;
-	}
+	if (nskb == NULL)
+		return -ENOBUFS;
 
 	err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).pid,
 			       nlh->nlmsg_seq, 0, 0);
@@ -1183,11 +1197,8 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 		/* -EMSGSIZE implies BUG in if_nlmsg_size */
 		WARN_ON(err == -EMSGSIZE);
 		kfree_skb(nskb);
-		goto errout;
-	}
-	err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid);
-errout:
-	dev_put(dev);
+	} else
+		err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid);
 
 	return err;
 }
diff --git a/net/core/sock.c b/net/core/sock.c
index 7626b6aacd68..5a51512f638a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -274,25 +274,27 @@ static void sock_disable_timestamp(struct sock *sk, int flag)
 
 int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
-	int err = 0;
+	int err;
 	int skb_len;
+	unsigned long flags;
+	struct sk_buff_head *list = &sk->sk_receive_queue;
 
 	/* Cast sk->rcvbuf to unsigned... It's pointless, but reduces
 	   number of warnings when compiling with -W --ANK
 	 */
 	if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
 	    (unsigned)sk->sk_rcvbuf) {
-		err = -ENOMEM;
-		goto out;
+		atomic_inc(&sk->sk_drops);
+		return -ENOMEM;
 	}
 
 	err = sk_filter(sk, skb);
 	if (err)
-		goto out;
+		return err;
 
 	if (!sk_rmem_schedule(sk, skb->truesize)) {
-		err = -ENOBUFS;
-		goto out;
+		atomic_inc(&sk->sk_drops);
+		return -ENOBUFS;
 	}
 
 	skb->dev = NULL;
@@ -305,12 +307,14 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	 */
 	skb_len = skb->len;
 
-	skb_queue_tail(&sk->sk_receive_queue, skb);
+	spin_lock_irqsave(&list->lock, flags);
+	skb->dropcount = atomic_read(&sk->sk_drops);
+	__skb_queue_tail(list, skb);
+	spin_unlock_irqrestore(&list->lock, flags);
 
 	if (!sock_flag(sk, SOCK_DEAD))
 		sk->sk_data_ready(sk, skb_len);
-out:
-	return err;
+	return 0;
 }
 EXPORT_SYMBOL(sock_queue_rcv_skb);
 
@@ -348,11 +352,18 @@ discard_and_relse:
 }
 EXPORT_SYMBOL(sk_receive_skb);
 
+void sk_reset_txq(struct sock *sk)
+{
+	sk_tx_queue_clear(sk);
+}
+EXPORT_SYMBOL(sk_reset_txq);
+
 struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
 {
 	struct dst_entry *dst = sk->sk_dst_cache;
 
 	if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
+		sk_tx_queue_clear(sk);
 		sk->sk_dst_cache = NULL;
 		dst_release(dst);
 		return NULL;
@@ -702,6 +713,12 @@ set_rcvbuf:
 
 		/* We implement the SO_SNDLOWAT etc to
 		   not be settable (1003.1g 5.3) */
+	case SO_RXQ_OVFL:
+		if (valbool)
+			sock_set_flag(sk, SOCK_RXQ_OVFL);
+		else
+			sock_reset_flag(sk, SOCK_RXQ_OVFL);
+		break;
 	default:
 		ret = -ENOPROTOOPT;
 		break;
@@ -901,6 +918,10 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
 		v.val = sk->sk_mark;
 		break;
 
+	case SO_RXQ_OVFL:
+		v.val = !!sock_flag(sk, SOCK_RXQ_OVFL);
+		break;
+
 	default:
 		return -ENOPROTOOPT;
 	}
@@ -939,7 +960,8 @@ static void sock_copy(struct sock *nsk, const struct sock *osk)
 	void *sptr = nsk->sk_security;
 #endif
 	BUILD_BUG_ON(offsetof(struct sock, sk_copy_start) !=
-		     sizeof(osk->sk_node) + sizeof(osk->sk_refcnt));
+		     sizeof(osk->sk_node) + sizeof(osk->sk_refcnt) +
+		     sizeof(osk->sk_tx_queue_mapping));
 	memcpy(&nsk->sk_copy_start, &osk->sk_copy_start,
 	       osk->sk_prot->obj_size - offsetof(struct sock, sk_copy_start));
 #ifdef CONFIG_SECURITY_NETWORK
@@ -983,6 +1005,7 @@ static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority,
 
 		if (!try_module_get(prot->owner))
 			goto out_free_sec;
+		sk_tx_queue_clear(sk);
 	}
 
 	return sk;