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

Pull networking fixes from David Miller:

 1) Fix out-of-bounds array access in netfilter ipset, from Jozsef
    Kadlecsik.

 2) Use correct free operation on netfilter conntrack templates, from
    Daniel Borkmann.

 3) Fix route leak in SCTP, from Marcelo Ricardo Leitner.

 4) Fix sizeof(pointer) in mac80211, from Thierry Reding.

 5) Fix cache pointer comparison in ip6mr leading to missed unlock of
    mrt_lock.  From Richard Laing.

 6) rds_conn_lookup() needs to consider network namespace in key
    comparison, from Sowmini Varadhan.

 7) Fix deadlock in TIPC code wrt broadcast link wakeups, from Kolmakov
    Dmitriy.

 8) Fix fd leaks in bpf syscall, from Daniel Borkmann.

 9) Fix error recovery when installing ipv6 multipath routes, we would
    delete the old route before we would know if we could fully commit
    to the new set of nexthops.  Fix from Roopa Prabhu.

10) Fix run-time suspend problems in r8152, from Hayes Wang.

11) In fec, don't program the MAC address into the chip when the clocks
    are gated off.  From Fugang Duan.

12) Fix poll behavior for netlink sockets when using rx ring mmap, from
    Daniel Borkmann.

13) Don't allocate memory with GFP_KERNEL from get_stats64 in r8169
    driver, from Corinna Vinschen.

14) In TCP Cubic congestion control, handle idle periods better where we
    are application limited, in order to keep cwnd from growing out of
    control.  From Eric Dumzet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits)
  tcp_cubic: better follow cubic curve after idle period
  tcp: generate CA_EVENT_TX_START on data frames
  xen-netfront: respect user provided max_queues
  xen-netback: respect user provided max_queues
  r8169: Fix sleeping function called during get_stats64, v2
  ether: add IEEE 1722 ethertype - TSN
  netlink, mmap: fix edge-case leakages in nf queue zero-copy
  netlink, mmap: don't walk rx ring on poll if receive queue non-empty
  cxgb4: changes for new firmware 1.14.4.0
  net: fec: add netif status check before set mac address
  r8152: fix the runtime suspend issues
  r8152: split DRIVER_VERSION
  ipv6: fix ifnullfree.cocci warnings
  add microchip LAN88xx phy driver
  stmmac: fix check for phydev being open
  net: qlcnic: delete redundant memsets
  net: mv643xx_eth: use kzalloc
  net: jme: use kzalloc() instead of kmalloc+memset
  net: cavium: liquidio: use kzalloc in setup_glist()
  net: ipv6: use common fib_default_rule_pref
  ...

34 files changed, 461 insertions, 108 deletions

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index af5e187553fd..ea748c93a07f 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -16,7 +16,6 @@
 #include <net/rtnetlink.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
-#include <net/switchdev.h>
 #include <uapi/linux/if_bridge.h>
 
 #include "br_private.h"
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 3cd8cc9e804b..5f5a02b49a99 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -117,10 +117,11 @@ out_filt:
 	return err;
 }
 
-static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
-			   u16 vid)
+static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
+			  u16 vid)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
+	int err = 0;
 
 	/* If driver uses VLAN ndo ops, use 8021q to delete vid
 	 * on device, otherwise try switchdev ops to delete vid.
@@ -137,8 +138,12 @@ static void __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
 			},
 		};
 
-		switchdev_port_obj_del(dev, &vlan_obj);
+		err = switchdev_port_obj_del(dev, &vlan_obj);
+		if (err == -EOPNOTSUPP)
+			err = 0;
 	}
+
+	return err;
 }
 
 static int __vlan_del(struct net_port_vlans *v, u16 vid)
@@ -151,7 +156,11 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
 
 	if (v->port_idx) {
 		struct net_bridge_port *p = v->parent.port;
-		__vlan_vid_del(p->dev, p->br, vid);
+		int err;
+
+		err = __vlan_vid_del(p->dev, p->br, vid);
+		if (err)
+			return err;
 	}
 
 	clear_bit(vid, v->vlan_bitmap);
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index ae8306e7c56f..bf77e3639ce0 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -44,7 +44,7 @@ int fib_default_rule_add(struct fib_rules_ops *ops,
 }
 EXPORT_SYMBOL(fib_default_rule_add);
 
-u32 fib_default_rule_pref(struct fib_rules_ops *ops)
+static u32 fib_default_rule_pref(struct fib_rules_ops *ops)
 {
 	struct list_head *pos;
 	struct fib_rule *rule;
@@ -60,7 +60,6 @@ u32 fib_default_rule_pref(struct fib_rules_ops *ops)
 
 	return 0;
 }
-EXPORT_SYMBOL(fib_default_rule_pref);
 
 static void notify_rule_change(int event, struct fib_rule *rule,
 			       struct fib_rules_ops *ops, struct nlmsghdr *nlh,
@@ -299,8 +298,8 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh)
 	}
 	rule->fr_net = net;
 
-	if (tb[FRA_PRIORITY])
-		rule->pref = nla_get_u32(tb[FRA_PRIORITY]);
+	rule->pref = tb[FRA_PRIORITY] ? nla_get_u32(tb[FRA_PRIORITY])
+	                              : fib_default_rule_pref(ops);
 
 	if (tb[FRA_IIFNAME]) {
 		struct net_device *dev;
@@ -350,9 +349,6 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh)
 	else
 		rule->suppress_ifgroup = -1;
 
-	if (!tb[FRA_PRIORITY] && ops->default_pref)
-		rule->pref = ops->default_pref(ops);
-
 	err = -EINVAL;
 	if (tb[FRA_GOTO]) {
 		if (rule->action != FR_ACT_GOTO)
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 9d66a0f72f90..295bbd6a56f2 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -229,7 +229,6 @@ static const struct fib_rules_ops __net_initconst dn_fib_rules_ops_template = {
 	.configure	= dn_fib_rule_configure,
 	.compare	= dn_fib_rule_compare,
 	.fill		= dn_fib_rule_fill,
-	.default_pref	= fib_default_rule_pref,
 	.flush_cache	= dn_fib_rule_flush_cache,
 	.nlgroup	= RTNLGRP_DECnet_RULE,
 	.policy		= dn_fib_rule_policy,
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 18123d50f576..f2bda9e89c61 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -318,7 +318,6 @@ static const struct fib_rules_ops __net_initconst fib4_rules_ops_template = {
 	.delete		= fib4_rule_delete,
 	.compare	= fib4_rule_compare,
 	.fill		= fib4_rule_fill,
-	.default_pref	= fib_default_rule_pref,
 	.nlmsg_payload	= fib4_rule_nlmsg_payload,
 	.flush_cache	= fib4_rule_flush_cache,
 	.nlgroup	= RTNLGRP_IPV4_RULE,
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 3a2c0162c3ba..866ee89f5254 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -233,7 +233,6 @@ static const struct fib_rules_ops __net_initconst ipmr_rules_ops_template = {
 	.match		= ipmr_rule_match,
 	.configure	= ipmr_rule_configure,
 	.compare	= ipmr_rule_compare,
-	.default_pref	= fib_default_rule_pref,
 	.fill		= ipmr_rule_fill,
 	.nlgroup	= RTNLGRP_IPV4_RULE,
 	.policy		= ipmr_rule_policy,
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 28011fb1f4a2..c6ded6b2a79f 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -151,6 +151,21 @@ static void bictcp_init(struct sock *sk)
 		tcp_sk(sk)->snd_ssthresh = initial_ssthresh;
 }
 
+static void bictcp_cwnd_event(struct sock *sk, enum tcp_ca_event event)
+{
+	if (event == CA_EVENT_TX_START) {
+		s32 delta = tcp_time_stamp - tcp_sk(sk)->lsndtime;
+		struct bictcp *ca = inet_csk_ca(sk);
+
+		/* We were application limited (idle) for a while.
+		 * Shift epoch_start to keep cwnd growth to cubic curve.
+		 */
+		if (ca->epoch_start && delta > 0)
+			ca->epoch_start += delta;
+		return;
+	}
+}
+
 /* calculate the cubic root of x using a table lookup followed by one
  * Newton-Raphson iteration.
  * Avg err ~= 0.195%
@@ -450,6 +465,7 @@ static struct tcp_congestion_ops cubictcp __read_mostly = {
 	.cong_avoid	= bictcp_cong_avoid,
 	.set_state	= bictcp_state,
 	.undo_cwnd	= bictcp_undo_cwnd,
+	.cwnd_event	= bictcp_cwnd_event,
 	.pkts_acked     = bictcp_acked,
 	.owner		= THIS_MODULE,
 	.name		= "cubic",
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 1188e4fcf23b..f9a8a12b62ee 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -164,6 +164,9 @@ static void tcp_event_data_sent(struct tcp_sock *tp,
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	const u32 now = tcp_time_stamp;
 
+	if (tcp_packets_in_flight(tp) == 0)
+		tcp_ca_event(sk, CA_EVENT_TX_START);
+
 	tp->lsndtime = now;
 
 	/* If it is a reply for ato after last received
@@ -940,9 +943,6 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
 							   &md5);
 	tcp_header_size = tcp_options_size + sizeof(struct tcphdr);
 
-	if (tcp_packets_in_flight(tp) == 0)
-		tcp_ca_event(sk, CA_EVENT_TX_START);
-
 	/* if no packet is in qdisc/device queue, then allow XPS to select
 	 * another queue. We can be called from tcp_tsq_handler()
 	 * which holds one reference to sk_wmem_alloc.
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 2367a16eae58..9f777ec59a59 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -258,11 +258,6 @@ nla_put_failure:
 	return -ENOBUFS;
 }
 
-static u32 fib6_rule_default_pref(struct fib_rules_ops *ops)
-{
-	return 0x3FFF;
-}
-
 static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
 {
 	return nla_total_size(16) /* dst */
@@ -279,7 +274,6 @@ static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
 	.configure		= fib6_rule_configure,
 	.compare		= fib6_rule_compare,
 	.fill			= fib6_rule_fill,
-	.default_pref		= fib6_rule_default_pref,
 	.nlmsg_payload		= fib6_rule_nlmsg_payload,
 	.nlgroup		= RTNLGRP_IPV6_RULE,
 	.policy			= fib6_rule_policy,
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 74ceb73c1c9a..0e004cc42a22 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -217,7 +217,6 @@ static const struct fib_rules_ops __net_initconst ip6mr_rules_ops_template = {
 	.match		= ip6mr_rule_match,
 	.configure	= ip6mr_rule_configure,
 	.compare	= ip6mr_rule_compare,
-	.default_pref	= fib_default_rule_pref,
 	.fill		= ip6mr_rule_fill,
 	.nlgroup	= RTNLGRP_IPV6_RULE,
 	.policy		= ip6mr_rule_policy,
@@ -550,7 +549,7 @@ static void ipmr_mfc_seq_stop(struct seq_file *seq, void *v)
 
 	if (it->cache == &mrt->mfc6_unres_queue)
 		spin_unlock_bh(&mfc_unres_lock);
-	else if (it->cache == mrt->mfc6_cache_array)
+	else if (it->cache == &mrt->mfc6_cache_array[it->ct])
 		read_unlock(&mrt_lock);
 }
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f45cac6f8356..53617d715188 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1748,7 +1748,7 @@ static int ip6_convert_metrics(struct mx6_config *mxc,
 	return -EINVAL;
 }
 
-int ip6_route_add(struct fib6_config *cfg)
+int ip6_route_info_create(struct fib6_config *cfg, struct rt6_info **rt_ret)
 {
 	int err;
 	struct net *net = cfg->fc_nlinfo.nl_net;
@@ -1756,7 +1756,6 @@ int ip6_route_add(struct fib6_config *cfg)
 	struct net_device *dev = NULL;
 	struct inet6_dev *idev = NULL;
 	struct fib6_table *table;
-	struct mx6_config mxc = { .mx = NULL, };
 	int addr_type;
 
 	if (cfg->fc_dst_len > 128 || cfg->fc_src_len > 128)
@@ -1981,6 +1980,32 @@ install_route:
 
 	cfg->fc_nlinfo.nl_net = dev_net(dev);
 
+	*rt_ret = rt;
+
+	return 0;
+out:
+	if (dev)
+		dev_put(dev);
+	if (idev)
+		in6_dev_put(idev);
+	if (rt)
+		dst_free(&rt->dst);
+
+	*rt_ret = NULL;
+
+	return err;
+}
+
+int ip6_route_add(struct fib6_config *cfg)
+{
+	struct mx6_config mxc = { .mx = NULL, };
+	struct rt6_info *rt = NULL;
+	int err;
+
+	err = ip6_route_info_create(cfg, &rt);
+	if (err)
+		goto out;
+
 	err = ip6_convert_metrics(&mxc, cfg);
 	if (err)
 		goto out;
@@ -1988,14 +2013,12 @@ install_route:
 	err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, &mxc);
 
 	kfree(mxc.mx);
+
 	return err;
 out:
-	if (dev)
-		dev_put(dev);
-	if (idev)
-		in6_dev_put(idev);
 	if (rt)
 		dst_free(&rt->dst);
+
 	return err;
 }
 
@@ -2776,19 +2799,78 @@ errout:
 	return err;
 }
 
-static int ip6_route_multipath(struct fib6_config *cfg, int add)
+struct rt6_nh {
+	struct rt6_info *rt6_info;
+	struct fib6_config r_cfg;
+	struct mx6_config mxc;
+	struct list_head next;
+};
+
+static void ip6_print_replace_route_err(struct list_head *rt6_nh_list)
+{
+	struct rt6_nh *nh;
+
+	list_for_each_entry(nh, rt6_nh_list, next) {
+		pr_warn("IPV6: multipath route replace failed (check consistency of installed routes): %pI6 nexthop %pI6 ifi %d\n",
+		        &nh->r_cfg.fc_dst, &nh->r_cfg.fc_gateway,
+		        nh->r_cfg.fc_ifindex);
+	}
+}
+
+static int ip6_route_info_append(struct list_head *rt6_nh_list,
+				 struct rt6_info *rt, struct fib6_config *r_cfg)
+{
+	struct rt6_nh *nh;
+	struct rt6_info *rtnh;
+	int err = -EEXIST;
+
+	list_for_each_entry(nh, rt6_nh_list, next) {
+		/* check if rt6_info already exists */
+		rtnh = nh->rt6_info;
+
+		if (rtnh->dst.dev == rt->dst.dev &&
+		    rtnh->rt6i_idev == rt->rt6i_idev &&
+		    ipv6_addr_equal(&rtnh->rt6i_gateway,
+				    &rt->rt6i_gateway))
+			return err;
+	}
+
+	nh = kzalloc(sizeof(*nh), GFP_KERNEL);
+	if (!nh)
+		return -ENOMEM;
+	nh->rt6_info = rt;
+	err = ip6_convert_metrics(&nh->mxc, r_cfg);
+	if (err) {
+		kfree(nh);
+		return err;
+	}
+	memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg));
+	list_add_tail(&nh->next, rt6_nh_list);
+
+	return 0;
+}
+
+static int ip6_route_multipath_add(struct fib6_config *cfg)
 {
 	struct fib6_config r_cfg;
 	struct rtnexthop *rtnh;
+	struct rt6_info *rt;
+	struct rt6_nh *err_nh;
+	struct rt6_nh *nh, *nh_safe;
 	int remaining;
 	int attrlen;
-	int err = 0, last_err = 0;
+	int err = 1;
+	int nhn = 0;
+	int replace = (cfg->fc_nlinfo.nlh &&
+		       (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE));
+	LIST_HEAD(rt6_nh_list);
 
 	remaining = cfg->fc_mp_len;
-beginning:
 	rtnh = (struct rtnexthop *)cfg->fc_mp;
 
-	/* Parse a Multipath Entry */
+	/* Parse a Multipath Entry and build a list (rt6_nh_list) of
+	 * rt6_info structs per nexthop
+	 */
 	while (rtnh_ok(rtnh, remaining)) {
 		memcpy(&r_cfg, cfg, sizeof(*cfg));
 		if (rtnh->rtnh_ifindex)
@@ -2808,22 +2890,32 @@ beginning:
 			if (nla)
 				r_cfg.fc_encap_type = nla_get_u16(nla);
 		}
-		err = add ? ip6_route_add(&r_cfg) : ip6_route_del(&r_cfg);
+
+		err = ip6_route_info_create(&r_cfg, &rt);
+		if (err)
+			goto cleanup;
+
+		err = ip6_route_info_append(&rt6_nh_list, rt, &r_cfg);
 		if (err) {
-			last_err = err;
-			/* If we are trying to remove a route, do not stop the
-			 * loop when ip6_route_del() fails (because next hop is
-			 * already gone), we should try to remove all next hops.
-			 */
-			if (add) {
-				/* If add fails, we should try to delete all
-				 * next hops that have been already added.
-				 */
-				add = 0;
-				remaining = cfg->fc_mp_len - remaining;
-				goto beginning;
-			}
+			dst_free(&rt->dst);
+			goto cleanup;
+		}
+
+		rtnh = rtnh_next(rtnh, &remaining);
+	}
+
+	err_nh = NULL;
+	list_for_each_entry(nh, &rt6_nh_list, next) {
+		err = __ip6_ins_rt(nh->rt6_info, &cfg->fc_nlinfo, &nh->mxc);
+		/* nh->rt6_info is used or freed at this point, reset to NULL*/
+		nh->rt6_info = NULL;
+		if (err) {
+			if (replace && nhn)
+				ip6_print_replace_route_err(&rt6_nh_list);
+			err_nh = nh;
+			goto add_errout;
 		}
+
 		/* Because each route is added like a single route we remove
 		 * these flags after the first nexthop: if there is a collision,
 		 * we have already failed to add the first nexthop:
@@ -2833,6 +2925,62 @@ beginning:
 		 */
 		cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL |
 						     NLM_F_REPLACE);
+		nhn++;
+	}
+
+	goto cleanup;
+
+add_errout:
+	/* Delete routes that were already added */
+	list_for_each_entry(nh, &rt6_nh_list, next) {
+		if (err_nh == nh)
+			break;
+		ip6_route_del(&nh->r_cfg);
+	}
+
+cleanup:
+	list_for_each_entry_safe(nh, nh_safe, &rt6_nh_list, next) {
+		if (nh->rt6_info)
+			dst_free(&nh->rt6_info->dst);
+		kfree(nh->mxc.mx);
+		list_del(&nh->next);
+		kfree(nh);
+	}
+
+	return err;
+}
+
+static int ip6_route_multipath_del(struct fib6_config *cfg)
+{
+	struct fib6_config r_cfg;
+	struct rtnexthop *rtnh;
+	int remaining;
+	int attrlen;
+	int err = 1, last_err = 0;
+
+	remaining = cfg->fc_mp_len;
+	rtnh = (struct rtnexthop *)cfg->fc_mp;
+
+	/* Parse a Multipath Entry */
+	while (rtnh_ok(rtnh, remaining)) {
+		memcpy(&r_cfg, cfg, sizeof(*cfg));
+		if (rtnh->rtnh_ifindex)
+			r_cfg.fc_ifindex = rtnh->rtnh_ifindex;
+
+		attrlen = rtnh_attrlen(rtnh);
+		if (attrlen > 0) {
+			struct nlattr *nla, *attrs = rtnh_attrs(rtnh);
+
+			nla = nla_find(attrs, attrlen, RTA_GATEWAY);
+			if (nla) {
+				nla_memcpy(&r_cfg.fc_gateway, nla, 16);
+				r_cfg.fc_flags |= RTF_GATEWAY;
+			}
+		}
+		err = ip6_route_del(&r_cfg);
+		if (err)
+			last_err = err;
+
 		rtnh = rtnh_next(rtnh, &remaining);
 	}
 
@@ -2849,7 +2997,7 @@ static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh)
 		return err;
 
 	if (cfg.fc_mp)
-		return ip6_route_multipath(&cfg, 0);
+		return ip6_route_multipath_del(&cfg);
 	else
 		return ip6_route_del(&cfg);
 }
@@ -2864,7 +3012,7 @@ static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh)
 		return err;
 
 	if (cfg.fc_mp)
-		return ip6_route_multipath(&cfg, 1);
+		return ip6_route_multipath_add(&cfg);
 	else
 		return ip6_route_add(&cfg);
 }
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 685ec13ed7c2..17b1fe961c5d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2468,6 +2468,10 @@ static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
 	    rssi_hyst == bss_conf->cqm_rssi_hyst)
 		return 0;
 
+	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
+	    !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
+		return -EOPNOTSUPP;
+
 	bss_conf->cqm_rssi_thold = rssi_thold;
 	bss_conf->cqm_rssi_hyst = rssi_hyst;
 
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 705ef1d040ed..cd7e55e08a23 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4267,6 +4267,8 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_supported_band *sband;
 	struct cfg80211_chan_def chandef;
 	int ret;
+	u32 i;
+	bool have_80mhz;
 
 	sband = local->hw.wiphy->bands[cbss->channel->band];
 
@@ -4317,6 +4319,20 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 		}
 	}
 
+	/* Allow VHT if at least one channel on the sband supports 80 MHz */
+	have_80mhz = false;
+	for (i = 0; i < sband->n_channels; i++) {
+		if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
+						IEEE80211_CHAN_NO_80MHZ))
+			continue;
+
+		have_80mhz = true;
+		break;
+	}
+
+	if (!have_80mhz)
+		ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+
 	ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
 						     cbss->channel,
 						     ht_cap, ht_oper, vht_oper,
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 9857693b91ec..9ce8883d5f44 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -716,7 +716,7 @@ static bool rate_control_cap_mask(struct ieee80211_sub_if_data *sdata,
 
 		/* Filter out rates that the STA does not support */
 		*mask &= sta->supp_rates[sband->band];
-		for (i = 0; i < sizeof(mcs_mask); i++)
+		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
 			mcs_mask[i] &= sta->ht_cap.mcs.rx_mask[i];
 
 		sta_vht_cap = sta->vht_cap.vht_mcs.rx_mcs_map;
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index aee701a5649e..4e202d0679b2 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -1249,6 +1249,58 @@ static void iee80211_tdls_recalc_chanctx(struct ieee80211_sub_if_data *sdata)
 	mutex_unlock(&local->chanctx_mtx);
 }
 
+static int iee80211_tdls_have_ht_peers(struct ieee80211_sub_if_data *sdata)
+{
+	struct sta_info *sta;
+	bool result = false;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
+		if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
+		    !test_sta_flag(sta, WLAN_STA_AUTHORIZED) ||
+		    !test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH) ||
+		    !sta->sta.ht_cap.ht_supported)
+			continue;
+		result = true;
+		break;
+	}
+	rcu_read_unlock();
+
+	return result;
+}
+
+static void
+iee80211_tdls_recalc_ht_protection(struct ieee80211_sub_if_data *sdata,
+				   struct sta_info *sta)
+{
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	bool tdls_ht;
+	u16 protection = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED |
+			 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
+			 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
+	u16 opmode;
+
+	/* Nothing to do if the BSS connection uses HT */
+	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
+		return;
+
+	tdls_ht = (sta && sta->sta.ht_cap.ht_supported) ||
+		  iee80211_tdls_have_ht_peers(sdata);
+
+	opmode = sdata->vif.bss_conf.ht_operation_mode;
+
+	if (tdls_ht)
+		opmode |= protection;
+	else
+		opmode &= ~protection;
+
+	if (opmode == sdata->vif.bss_conf.ht_operation_mode)
+		return;
+
+	sdata->vif.bss_conf.ht_operation_mode = opmode;
+	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
+}
+
 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
 			const u8 *peer, enum nl80211_tdls_operation oper)
 {
@@ -1274,6 +1326,10 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
 		return -ENOTSUPP;
 	}
 
+	/* protect possible bss_conf changes and avoid concurrency in
+	 * ieee80211_bss_info_change_notify()
+	 */
+	sdata_lock(sdata);
 	mutex_lock(&local->mtx);
 	tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
 
@@ -1287,16 +1343,18 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
 
 		iee80211_tdls_recalc_chanctx(sdata);
 
-		rcu_read_lock();
+		mutex_lock(&local->sta_mtx);
 		sta = sta_info_get(sdata, peer);
 		if (!sta) {
-			rcu_read_unlock();
+			mutex_unlock(&local->sta_mtx);
 			ret = -ENOLINK;
 			break;
 		}
 
+		iee80211_tdls_recalc_ht_protection(sdata, sta);
+
 		set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
-		rcu_read_unlock();
+		mutex_unlock(&local->sta_mtx);
 
 		WARN_ON_ONCE(is_zero_ether_addr(sdata->u.mgd.tdls_peer) ||
 			     !ether_addr_equal(sdata->u.mgd.tdls_peer, peer));
@@ -1318,6 +1376,11 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
 		ieee80211_flush_queues(local, sdata, false);
 
 		ret = sta_info_destroy_addr(sdata, peer);
+
+		mutex_lock(&local->sta_mtx);
+		iee80211_tdls_recalc_ht_protection(sdata, NULL);
+		mutex_unlock(&local->sta_mtx);
+
 		iee80211_tdls_recalc_chanctx(sdata);
 		break;
 	default:
@@ -1335,6 +1398,7 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
 				     &sdata->u.mgd.request_smps_work);
 
 	mutex_unlock(&local->mtx);
+	sdata_unlock(sdata);
 	return ret;
 }
 
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 834ccdbc74be..ff1c798921a6 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -120,6 +120,7 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
 	struct ieee80211_sta_vht_cap own_cap;
 	u32 cap_info, i;
+	bool have_80mhz;
 
 	memset(vht_cap, 0, sizeof(*vht_cap));
 
@@ -129,6 +130,20 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
 	if (!vht_cap_ie || !sband->vht_cap.vht_supported)
 		return;
 
+	/* Allow VHT if at least one channel on the sband supports 80 MHz */
+	have_80mhz = false;
+	for (i = 0; i < sband->n_channels; i++) {
+		if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
+						IEEE80211_CHAN_NO_80MHZ))
+			continue;
+
+		have_80mhz = true;
+		break;
+	}
+
+	if (!have_80mhz)
+		return;
+
 	/*
 	 * A VHT STA must support 40 MHz, but if we verify that here
 	 * then we break a few things - some APs (e.g. Netgear R6300v2
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index afe905c208af..691b54fcaf2a 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -152,9 +152,13 @@ htable_bits(u32 hashsize)
 #define SET_HOST_MASK(family)	(family == AF_INET ? 32 : 128)
 
 #ifdef IP_SET_HASH_WITH_NET0
+/* cidr from 0 to SET_HOST_MASK() value and c = cidr + 1 */
 #define NLEN(family)		(SET_HOST_MASK(family) + 1)
+#define CIDR_POS(c)		((c) - 1)
 #else
+/* cidr from 1 to SET_HOST_MASK() value and c = cidr + 1 */
 #define NLEN(family)		SET_HOST_MASK(family)
+#define CIDR_POS(c)		((c) - 2)
 #endif
 
 #else
@@ -305,7 +309,7 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
 		} else if (h->nets[i].cidr[n] < cidr) {
 			j = i;
 		} else if (h->nets[i].cidr[n] == cidr) {
-			h->nets[cidr - 1].nets[n]++;
+			h->nets[CIDR_POS(cidr)].nets[n]++;
 			return;
 		}
 	}
@@ -314,7 +318,7 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
 			h->nets[i].cidr[n] = h->nets[i - 1].cidr[n];
 	}
 	h->nets[i].cidr[n] = cidr;
-	h->nets[cidr - 1].nets[n] = 1;
+	h->nets[CIDR_POS(cidr)].nets[n] = 1;
 }
 
 static void
@@ -325,8 +329,8 @@ mtype_del_cidr(struct htype *h, u8 cidr, u8 nets_length, u8 n)
 	for (i = 0; i < nets_length; i++) {
 		if (h->nets[i].cidr[n] != cidr)
 			continue;
-		h->nets[cidr - 1].nets[n]--;
-		if (h->nets[cidr - 1].nets[n] > 0)
+		h->nets[CIDR_POS(cidr)].nets[n]--;
+		if (h->nets[CIDR_POS(cidr)].nets[n] > 0)
 			return;
 		for (j = i; j < net_end && h->nets[j].cidr[n]; j++)
 			h->nets[j].cidr[n] = h->nets[j + 1].cidr[n];
diff --git a/net/netfilter/ipset/ip_set_hash_netnet.c b/net/netfilter/ipset/ip_set_hash_netnet.c
index 3c862c0a76d1..a93dfebffa81 100644
--- a/net/netfilter/ipset/ip_set_hash_netnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netnet.c
@@ -131,6 +131,13 @@ hash_netnet4_data_next(struct hash_netnet4_elem *next,
 #define HOST_MASK	32
 #include "ip_set_hash_gen.h"
 
+static void
+hash_netnet4_init(struct hash_netnet4_elem *e)
+{
+	e->cidr[0] = HOST_MASK;
+	e->cidr[1] = HOST_MASK;
+}
+
 static int
 hash_netnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
 		  const struct xt_action_param *par,
@@ -160,7 +167,7 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 {
 	const struct hash_netnet *h = set->data;
 	ipset_adtfn adtfn = set->variant->adt[adt];
-	struct hash_netnet4_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+	struct hash_netnet4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	u32 ip = 0, ip_to = 0, last;
 	u32 ip2 = 0, ip2_from = 0, ip2_to = 0, last2;
@@ -169,6 +176,7 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	hash_netnet4_init(&e);
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
@@ -357,6 +365,13 @@ hash_netnet6_data_next(struct hash_netnet4_elem *next,
 #define IP_SET_EMIT_CREATE
 #include "ip_set_hash_gen.h"
 
+static void
+hash_netnet6_init(struct hash_netnet6_elem *e)
+{
+	e->cidr[0] = HOST_MASK;
+	e->cidr[1] = HOST_MASK;
+}
+
 static int
 hash_netnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
 		  const struct xt_action_param *par,
@@ -385,13 +400,14 @@ hash_netnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 		  enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
 {
 	ipset_adtfn adtfn = set->variant->adt[adt];
-	struct hash_netnet6_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+	struct hash_netnet6_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	hash_netnet6_init(&e);
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c
index 0c68734f5cc4..9a14c237830f 100644
--- a/net/netfilter/ipset/ip_set_hash_netportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netportnet.c
@@ -142,6 +142,13 @@ hash_netportnet4_data_next(struct hash_netportnet4_elem *next,
 #define HOST_MASK	32
 #include "ip_set_hash_gen.h"
 
+static void
+hash_netportnet4_init(struct hash_netportnet4_elem *e)
+{
+	e->cidr[0] = HOST_MASK;
+	e->cidr[1] = HOST_MASK;
+}
+
 static int
 hash_netportnet4_kadt(struct ip_set *set, const struct sk_buff *skb,
 		      const struct xt_action_param *par,
@@ -175,7 +182,7 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 {
 	const struct hash_netportnet *h = set->data;
 	ipset_adtfn adtfn = set->variant->adt[adt];
-	struct hash_netportnet4_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+	struct hash_netportnet4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	u32 ip = 0, ip_to = 0, ip_last, p = 0, port, port_to;
 	u32 ip2_from = 0, ip2_to = 0, ip2_last, ip2;
@@ -185,6 +192,7 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	hash_netportnet4_init(&e);
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
@@ -412,6 +420,13 @@ hash_netportnet6_data_next(struct hash_netportnet4_elem *next,
 #define IP_SET_EMIT_CREATE
 #include "ip_set_hash_gen.h"
 
+static void
+hash_netportnet6_init(struct hash_netportnet6_elem *e)
+{
+	e->cidr[0] = HOST_MASK;
+	e->cidr[1] = HOST_MASK;
+}
+
 static int
 hash_netportnet6_kadt(struct ip_set *set, const struct sk_buff *skb,
 		      const struct xt_action_param *par,
@@ -445,7 +460,7 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 {
 	const struct hash_netportnet *h = set->data;
 	ipset_adtfn adtfn = set->variant->adt[adt];
-	struct hash_netportnet6_elem e = { .cidr = { HOST_MASK, HOST_MASK, }, };
+	struct hash_netportnet6_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	u32 port, port_to;
 	bool with_ports = false;
@@ -454,6 +469,7 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	hash_netportnet6_init(&e);
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index eedf0495f11f..c09d6c7198f6 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -313,12 +313,13 @@ out_free:
 }
 EXPORT_SYMBOL_GPL(nf_ct_tmpl_alloc);
 
-static void nf_ct_tmpl_free(struct nf_conn *tmpl)
+void nf_ct_tmpl_free(struct nf_conn *tmpl)
 {
 	nf_ct_ext_destroy(tmpl);
 	nf_ct_ext_free(tmpl);
 	kfree(tmpl);
 }
+EXPORT_SYMBOL_GPL(nf_ct_tmpl_free);
 
 static void
 destroy_conntrack(struct nf_conntrack *nfct)
diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c
index 888b9558415e..c8a4a48bced9 100644
--- a/net/netfilter/nf_synproxy_core.c
+++ b/net/netfilter/nf_synproxy_core.c
@@ -380,7 +380,7 @@ static int __net_init synproxy_net_init(struct net *net)
 err3:
 	free_percpu(snet->stats);
 err2:
-	nf_conntrack_free(ct);
+	nf_ct_tmpl_free(ct);
 err1:
 	return err;
 }
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 0c0e8ecf02ab..70277b11f742 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -444,6 +444,7 @@ done:
 static void nfnetlink_rcv(struct sk_buff *skb)
 {
 	struct nlmsghdr *nlh = nlmsg_hdr(skb);
+	u_int16_t res_id;
 	int msglen;
 
 	if (nlh->nlmsg_len < NLMSG_HDRLEN ||
@@ -468,7 +469,12 @@ static void nfnetlink_rcv(struct sk_buff *skb)
 
 		nfgenmsg = nlmsg_data(nlh);
 		skb_pull(skb, msglen);
-		nfnetlink_rcv_batch(skb, nlh, nfgenmsg->res_id);
+		/* Work around old nft using host byte order */
+		if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
+			res_id = NFNL_SUBSYS_NFTABLES;
+		else
+			res_id = ntohs(nfgenmsg->res_id);
+		nfnetlink_rcv_batch(skb, nlh, res_id);
 	} else {
 		netlink_rcv_skb(skb, &nfnetlink_rcv_msg);
 	}
diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index 685cc6a17163..a5cd6d90b78b 100644
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -301,7 +301,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
 			   __be32 **packet_id_ptr)
 {
 	size_t size;
-	size_t data_len = 0, cap_len = 0;
+	size_t data_len = 0, cap_len = 0, rem_len = 0;
 	unsigned int hlen = 0;
 	struct sk_buff *skb;
 	struct nlattr *nla;
@@ -360,6 +360,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
 		hlen = min_t(unsigned int, hlen, data_len);
 		size += sizeof(struct nlattr) + hlen;
 		cap_len = entskb->len;
+		rem_len = data_len - hlen;
 		break;
 	}
 
@@ -377,7 +378,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
 			size += nla_total_size(seclen);
 	}
 
-	skb = nfnetlink_alloc_skb(net, size, queue->peer_portid,
+	skb = __netlink_alloc_skb(net->nfnl, size, rem_len, queue->peer_portid,
 				  GFP_ATOMIC);
 	if (!skb) {
 		skb_tx_error(entskb);
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index 8e524898ccea..faf32d888198 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -255,7 +255,7 @@ out:
 	return 0;
 
 err3:
-	nf_conntrack_free(ct);
+	nf_ct_tmpl_free(ct);
 err2:
 	nf_ct_l3proto_module_put(par->family);
 err1:
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 50889be1517d..7f86d3b55060 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -674,12 +674,19 @@ static unsigned int netlink_poll(struct file *file, struct socket *sock,
 
 	mask = datagram_poll(file, sock, wait);
 
-	spin_lock_bh(&sk->sk_receive_queue.lock);
-	if (nlk->rx_ring.pg_vec) {
-		if (netlink_has_valid_frame(&nlk->rx_ring))
-			mask |= POLLIN | POLLRDNORM;
+	/* We could already have received frames in the normal receive
+	 * queue, that will show up as NL_MMAP_STATUS_COPY in the ring,
+	 * so if mask contains pollin/etc already, there's no point
+	 * walking the ring.
+	 */
+	if ((mask & (POLLIN | POLLRDNORM)) != (POLLIN | POLLRDNORM)) {
+		spin_lock_bh(&sk->sk_receive_queue.lock);
+		if (nlk->rx_ring.pg_vec) {
+			if (netlink_has_valid_frame(&nlk->rx_ring))
+				mask |= POLLIN | POLLRDNORM;
+		}
+		spin_unlock_bh(&sk->sk_receive_queue.lock);
 	}
-	spin_unlock_bh(&sk->sk_receive_queue.lock);
 
 	spin_lock_bh(&sk->sk_write_queue.lock);
 	if (nlk->tx_ring.pg_vec) {
@@ -1837,15 +1844,16 @@ retry:
 }
 EXPORT_SYMBOL(netlink_unicast);
 
-struct sk_buff *netlink_alloc_skb(struct sock *ssk, unsigned int size,
-				  u32 dst_portid, gfp_t gfp_mask)
+struct sk_buff *__netlink_alloc_skb(struct sock *ssk, unsigned int size,
+				    unsigned int ldiff, u32 dst_portid,
+				    gfp_t gfp_mask)
 {
 #ifdef CONFIG_NETLINK_MMAP
+	unsigned int maxlen, linear_size;
 	struct sock *sk = NULL;
 	struct sk_buff *skb;
 	struct netlink_ring *ring;
 	struct nl_mmap_hdr *hdr;
-	unsigned int maxlen;
 
 	sk = netlink_getsockbyportid(ssk, dst_portid);
 	if (IS_ERR(sk))
@@ -1856,7 +1864,11 @@ struct sk_buff *netlink_alloc_skb(struct sock *ssk, unsigned int size,
 	if (ring->pg_vec == NULL)
 		goto out_put;
 
-	if (ring->frame_size - NL_MMAP_HDRLEN < size)
+	/* We need to account the full linear size needed as a ring
+	 * slot cannot have non-linear parts.
+	 */
+	linear_size = size + ldiff;
+	if (ring->frame_size - NL_MMAP_HDRLEN < linear_size)
 		goto out_put;
 
 	skb = alloc_skb_head(gfp_mask);
@@ -1870,13 +1882,14 @@ struct sk_buff *netlink_alloc_skb(struct sock *ssk, unsigned int size,
 
 	/* check again under lock */
 	maxlen = ring->frame_size - NL_MMAP_HDRLEN;
-	if (maxlen < size)
+	if (maxlen < linear_size)
 		goto out_free;
 
 	netlink_forward_ring(ring);
 	hdr = netlink_current_frame(ring, NL_MMAP_STATUS_UNUSED);
 	if (hdr == NULL)
 		goto err2;
+
 	netlink_ring_setup_skb(skb, sk, ring, hdr);
 	netlink_set_status(hdr, NL_MMAP_STATUS_RESERVED);
 	atomic_inc(&ring->pending);
@@ -1902,7 +1915,7 @@ out:
 #endif
 	return alloc_skb(size, gfp_mask);
 }
-EXPORT_SYMBOL_GPL(netlink_alloc_skb);
+EXPORT_SYMBOL_GPL(__netlink_alloc_skb);
 
 int netlink_has_listeners(struct sock *sk, unsigned int group)
 {
diff --git a/net/openvswitch/Kconfig b/net/openvswitch/Kconfig
index af7cdef42066..2a071f470d57 100644
--- a/net/openvswitch/Kconfig
+++ b/net/openvswitch/Kconfig
@@ -5,6 +5,7 @@
 config OPENVSWITCH
 	tristate "Open vSwitch"
 	depends on INET
+	depends on (!NF_CONNTRACK || NF_CONNTRACK)
 	select LIBCRC32C
 	select MPLS
 	select NET_MPLS_GSO
@@ -31,17 +32,6 @@ config OPENVSWITCH
 
 	  If unsure, say N.
 
-config OPENVSWITCH_CONNTRACK
-	bool "Open vSwitch conntrack action support"
-	depends on OPENVSWITCH
-	depends on NF_CONNTRACK
-	default OPENVSWITCH
-	---help---
-	  If you say Y here, then Open vSwitch module will be able to pass
-	  packets through conntrack.
-
-	  Say N to exclude this support and reduce the binary size.
-
 config OPENVSWITCH_GRE
 	tristate "Open vSwitch GRE tunneling support"
 	depends on OPENVSWITCH
diff --git a/net/openvswitch/Makefile b/net/openvswitch/Makefile
index 5b5913b06f54..60f809085b92 100644
--- a/net/openvswitch/Makefile
+++ b/net/openvswitch/Makefile
@@ -15,7 +15,9 @@ openvswitch-y := \
 	vport-internal_dev.o \
 	vport-netdev.o
 
-openvswitch-$(CONFIG_OPENVSWITCH_CONNTRACK) += conntrack.o
+ifneq ($(CONFIG_NF_CONNTRACK),)
+openvswitch-y += conntrack.o
+endif
 
 obj-$(CONFIG_OPENVSWITCH_VXLAN)+= vport-vxlan.o
 obj-$(CONFIG_OPENVSWITCH_GENEVE)+= vport-geneve.o
diff --git a/net/openvswitch/conntrack.h b/net/openvswitch/conntrack.h
index 3cb30667a7dc..43f5dd7a5577 100644
--- a/net/openvswitch/conntrack.h
+++ b/net/openvswitch/conntrack.h
@@ -19,7 +19,7 @@
 struct ovs_conntrack_info;
 enum ovs_key_attr;
 
-#if defined(CONFIG_OPENVSWITCH_CONNTRACK)
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
 void ovs_ct_init(struct net *);
 void ovs_ct_exit(struct net *);
 bool ovs_ct_verify(struct net *, enum ovs_key_attr attr);
@@ -82,5 +82,5 @@ static inline int ovs_ct_put_key(const struct sw_flow_key *key,
 }
 
 static inline void ovs_ct_free_action(const struct nlattr *a) { }
-#endif
+#endif /* CONFIG_NF_CONNTRACK */
 #endif /* ovs_conntrack.h */
diff --git a/net/rds/connection.c b/net/rds/connection.c
index a50e652eb269..49adeef8090c 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -70,7 +70,8 @@ static struct hlist_head *rds_conn_bucket(__be32 laddr, __be32 faddr)
 } while (0)
 
 /* rcu read lock must be held or the connection spinlock */
-static struct rds_connection *rds_conn_lookup(struct hlist_head *head,
+static struct rds_connection *rds_conn_lookup(struct net *net,
+					      struct hlist_head *head,
 					      __be32 laddr, __be32 faddr,
 					      struct rds_transport *trans)
 {
@@ -78,7 +79,7 @@ static struct rds_connection *rds_conn_lookup(struct hlist_head *head,
 
 	hlist_for_each_entry_rcu(conn, head, c_hash_node) {
 		if (conn->c_faddr == faddr && conn->c_laddr == laddr &&
-				conn->c_trans == trans) {
+		    conn->c_trans == trans && net == rds_conn_net(conn)) {
 			ret = conn;
 			break;
 		}
@@ -132,7 +133,7 @@ static struct rds_connection *__rds_conn_create(struct net *net,
 	if (!is_outgoing && otrans->t_type == RDS_TRANS_TCP)
 		goto new_conn;
 	rcu_read_lock();
-	conn = rds_conn_lookup(head, laddr, faddr, trans);
+	conn = rds_conn_lookup(net, head, laddr, faddr, trans);
 	if (conn && conn->c_loopback && conn->c_trans != &rds_loop_transport &&
 	    laddr == faddr && !is_outgoing) {
 		/* This is a looped back IB connection, and we're
@@ -189,6 +190,12 @@ new_conn:
 		}
 	}
 
+	if (trans == NULL) {
+		kmem_cache_free(rds_conn_slab, conn);
+		conn = ERR_PTR(-ENODEV);
+		goto out;
+	}
+
 	conn->c_trans = trans;
 
 	ret = trans->conn_alloc(conn, gfp);
@@ -239,7 +246,7 @@ new_conn:
 		if (!is_outgoing && otrans->t_type == RDS_TRANS_TCP)
 			found = NULL;
 		else
-			found = rds_conn_lookup(head, laddr, faddr, trans);
+			found = rds_conn_lookup(net, head, laddr, faddr, trans);
 		if (found) {
 			trans->conn_free(conn->c_transport_data);
 			kmem_cache_free(rds_conn_slab, conn);
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index f12149a29cb1..b41e9ea2ffff 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -341,7 +341,15 @@ static void __rfkill_switch_all(const enum rfkill_type type, bool blocked)
 {
 	struct rfkill *rfkill;
 
-	rfkill_global_states[type].cur = blocked;
+	if (type == RFKILL_TYPE_ALL) {
+		int i;
+
+		for (i = 0; i < NUM_RFKILL_TYPES; i++)
+			rfkill_global_states[i].cur = blocked;
+	} else {
+		rfkill_global_states[type].cur = blocked;
+	}
+
 	list_for_each_entry(rfkill, &rfkill_list, node) {
 		if (rfkill->type != type && type != RFKILL_TYPE_ALL)
 			continue;
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 4345790ad326..b7143337e4fa 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -506,14 +506,22 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
 		if (IS_ERR(rt))
 			continue;
 
+		if (!dst)
+			dst = &rt->dst;
+
 		/* Ensure the src address belongs to the output
 		 * interface.
 		 */
 		odev = __ip_dev_find(sock_net(sk), laddr->a.v4.sin_addr.s_addr,
 				     false);
-		if (!odev || odev->ifindex != fl4->flowi4_oif)
+		if (!odev || odev->ifindex != fl4->flowi4_oif) {
+			if (&rt->dst != dst)
+				dst_release(&rt->dst);
 			continue;
+		}
 
+		if (dst != &rt->dst)
+			dst_release(dst);
 		dst = &rt->dst;
 		break;
 	}
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 16c1c43980a1..fda38f830a10 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -853,12 +853,8 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 		.cb = cb,
 		.idx = idx,
 	};
-	int err;
-
-	err = switchdev_port_obj_dump(dev, &dump.obj);
-	if (err)
-		return err;
 
+	switchdev_port_obj_dump(dev, &dump.obj);
 	return dump.idx;
 }
 EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 8b010c976b2f..41042de3ae9b 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -170,6 +170,30 @@ static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to)
 }
 
 /**
+ * bclink_prepare_wakeup - prepare users for wakeup after congestion
+ * @bcl: broadcast link
+ * @resultq: queue for users which can be woken up
+ * Move a number of waiting users, as permitted by available space in
+ * the send queue, from link wait queue to specified queue for wakeup
+ */
+static void bclink_prepare_wakeup(struct tipc_link *bcl, struct sk_buff_head *resultq)
+{
+	int pnd[TIPC_SYSTEM_IMPORTANCE + 1] = {0,};
+	int imp, lim;
+	struct sk_buff *skb, *tmp;
+
+	skb_queue_walk_safe(&bcl->wakeupq, skb, tmp) {
+		imp = TIPC_SKB_CB(skb)->chain_imp;
+		lim = bcl->window + bcl->backlog[imp].limit;
+		pnd[imp] += TIPC_SKB_CB(skb)->chain_sz;
+		if ((pnd[imp] + bcl->backlog[imp].len) >= lim)
+			continue;
+		skb_unlink(skb, &bcl->wakeupq);
+		skb_queue_tail(resultq, skb);
+	}
+}
+
+/**
  * tipc_bclink_wakeup_users - wake up pending users
  *
  * Called with no locks taken
@@ -177,8 +201,12 @@ static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to)
 void tipc_bclink_wakeup_users(struct net *net)
 {
 	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
+	struct sk_buff_head resultq;
 
-	tipc_sk_rcv(net, &tn->bclink->link.wakeupq);
+	skb_queue_head_init(&resultq);
+	bclink_prepare_wakeup(bcl, &resultq);
+	tipc_sk_rcv(net, &resultq);
 }
 
 /**
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index b144485946f2..2510b231451e 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2625,7 +2625,7 @@ static void restore_regulatory_settings(bool reset_user)
 	 * settings, user regulatory settings takes precedence.
 	 */
 	if (is_an_alpha2(alpha2))
-		regulatory_hint_user(user_alpha2, NL80211_USER_REG_HINT_USER);
+		regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER);
 
 	spin_lock(&reg_requests_lock);
 	list_splice_tail_init(&tmp_reg_req_list, &reg_requests_list);