19 files changed, 73 insertions, 50 deletions

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 9703c791ffc5..87cd962d28d5 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -393,7 +393,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
 		   batadv_arp_hw_src(skb, hdr_size), &ip_src,
 		   batadv_arp_hw_dst(skb, hdr_size), &ip_dst);
 
-	if (hdr_size == 0)
+	if (hdr_size < sizeof(struct batadv_unicast_packet))
 		return;
 
 	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index e91f29c7c638..5daa3d50da17 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -24,6 +24,7 @@
 #include <linux/debugfs.h>
 #include <linux/errno.h>
 #include <linux/etherdevice.h>
+#include <linux/eventpoll.h>
 #include <linux/export.h>
 #include <linux/fcntl.h>
 #include <linux/fs.h>
diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c
index dc9fa37ddd14..cdbe0e5e208b 100644
--- a/net/batman-adv/log.c
+++ b/net/batman-adv/log.c
@@ -22,6 +22,7 @@
 #include <linux/compiler.h>
 #include <linux/debugfs.h>
 #include <linux/errno.h>
+#include <linux/eventpoll.h>
 #include <linux/export.h>
 #include <linux/fcntl.h>
 #include <linux/fs.h>
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index cbdeb47ec3f6..d70640135e3a 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -543,8 +543,8 @@ update:
 		bat_priv->mcast.enabled = true;
 	}
 
-	return !(mcast_data.flags &
-		 (BATADV_MCAST_WANT_ALL_IPV4 | BATADV_MCAST_WANT_ALL_IPV6));
+	return !(mcast_data.flags & BATADV_MCAST_WANT_ALL_IPV4 &&
+		 mcast_data.flags & BATADV_MCAST_WANT_ALL_IPV6);
 }
 
 /**
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index b6891e8b741c..e61dc1293bb5 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -759,6 +759,7 @@ free_skb:
 /**
  * batadv_reroute_unicast_packet() - update the unicast header for re-routing
  * @bat_priv: the bat priv with all the soft interface information
+ * @skb: unicast packet to process
  * @unicast_packet: the unicast header to be updated
  * @dst_addr: the payload destination
  * @vid: VLAN identifier
@@ -770,7 +771,7 @@ free_skb:
  * Return: true if the packet header has been updated, false otherwise
  */
 static bool
-batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
+batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
 			      struct batadv_unicast_packet *unicast_packet,
 			      u8 *dst_addr, unsigned short vid)
 {
@@ -799,8 +800,10 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv,
 	}
 
 	/* update the packet header */
+	skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
 	ether_addr_copy(unicast_packet->dest, orig_addr);
 	unicast_packet->ttvn = orig_ttvn;
+	skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
 
 	ret = true;
 out:
@@ -841,7 +844,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
 	 * the packet to
 	 */
 	if (batadv_tt_local_client_is_roaming(bat_priv, ethhdr->h_dest, vid)) {
-		if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
+		if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
 						  ethhdr->h_dest, vid))
 			batadv_dbg_ratelimited(BATADV_DBG_TT,
 					       bat_priv,
@@ -887,7 +890,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
 	 * destination can possibly be updated and forwarded towards the new
 	 * target host
 	 */
-	if (batadv_reroute_unicast_packet(bat_priv, unicast_packet,
+	if (batadv_reroute_unicast_packet(bat_priv, skb, unicast_packet,
 					  ethhdr->h_dest, vid)) {
 		batadv_dbg_ratelimited(BATADV_DBG_TT, bat_priv,
 				       "Rerouting unicast packet to %pM (dst=%pM): TTVN mismatch old_ttvn=%u new_ttvn=%u\n",
@@ -910,12 +913,14 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
 	if (!primary_if)
 		return false;
 
+	/* update the packet header */
+	skb_postpull_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
 	ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);
+	unicast_packet->ttvn = curr_ttvn;
+	skb_postpush_rcsum(skb, unicast_packet, sizeof(*unicast_packet));
 
 	batadv_hardif_put(primary_if);
 
-	unicast_packet->ttvn = curr_ttvn;
-
 	return true;
 }
 
@@ -968,14 +973,10 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 	struct batadv_orig_node *orig_node = NULL, *orig_node_gw = NULL;
 	int check, hdr_size = sizeof(*unicast_packet);
 	enum batadv_subtype subtype;
-	struct ethhdr *ethhdr;
 	int ret = NET_RX_DROP;
 	bool is4addr, is_gw;
 
 	unicast_packet = (struct batadv_unicast_packet *)skb->data;
-	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
-	ethhdr = eth_hdr(skb);
-
 	is4addr = unicast_packet->packet_type == BATADV_UNICAST_4ADDR;
 	/* the caller function should have already pulled 2 bytes */
 	if (is4addr)
@@ -995,12 +996,14 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 	if (!batadv_check_unicast_ttvn(bat_priv, skb, hdr_size))
 		goto free_skb;
 
+	unicast_packet = (struct batadv_unicast_packet *)skb->data;
+
 	/* packet for me */
 	if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) {
 		/* If this is a unicast packet from another backgone gw,
 		 * drop it.
 		 */
-		orig_addr_gw = ethhdr->h_source;
+		orig_addr_gw = eth_hdr(skb)->h_source;
 		orig_node_gw = batadv_orig_hash_find(bat_priv, orig_addr_gw);
 		if (orig_node_gw) {
 			is_gw = batadv_bla_is_backbone_gw(skb, orig_node_gw,
@@ -1015,6 +1018,8 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
 		}
 
 		if (is4addr) {
+			unicast_4addr_packet =
+				(struct batadv_unicast_4addr_packet *)skb->data;
 			subtype = unicast_4addr_packet->subtype;
 			batadv_dat_inc_counter(bat_priv, subtype);
 
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 2f2307d94787..effd4848c2b4 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1798,7 +1798,7 @@ send_done:
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 
@@ -1807,7 +1807,6 @@ send_done:
 nla_put_failure:
 	err = -EMSGSIZE;
 err_table_put:
-err_skb_send_alloc:
 	genlmsg_cancel(skb, hdr);
 	nlmsg_free(skb);
 	return err;
@@ -2073,7 +2072,7 @@ static int devlink_dpipe_entries_fill(struct genl_info *info,
 					     table->counters_enabled,
 					     &dump_ctx);
 	if (err)
-		goto err_entries_dump;
+		return err;
 
 send_done:
 	nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
@@ -2081,16 +2080,10 @@ send_done:
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 	return genlmsg_reply(dump_ctx.skb, info);
-
-err_entries_dump:
-err_skb_send_alloc:
-	genlmsg_cancel(dump_ctx.skb, dump_ctx.hdr);
-	nlmsg_free(dump_ctx.skb);
-	return err;
 }
 
 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
@@ -2229,7 +2222,7 @@ send_done:
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 	return genlmsg_reply(skb, info);
@@ -2237,7 +2230,6 @@ send_done:
 nla_put_failure:
 	err = -EMSGSIZE;
 err_table_put:
-err_skb_send_alloc:
 	genlmsg_cancel(skb, hdr);
 	nlmsg_free(skb);
 	return err;
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 6d21068f9b55..7b85ffad5d74 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -362,13 +362,18 @@ static struct ip_tunnel *ip_tunnel_create(struct net *net,
 	struct ip_tunnel *nt;
 	struct net_device *dev;
 	int t_hlen;
+	int mtu;
+	int err;
 
 	BUG_ON(!itn->fb_tunnel_dev);
 	dev = __ip_tunnel_create(net, itn->fb_tunnel_dev->rtnl_link_ops, parms);
 	if (IS_ERR(dev))
 		return ERR_CAST(dev);
 
-	dev->mtu = ip_tunnel_bind_dev(dev);
+	mtu = ip_tunnel_bind_dev(dev);
+	err = dev_set_mtu(dev, mtu);
+	if (err)
+		goto err_dev_set_mtu;
 
 	nt = netdev_priv(dev);
 	t_hlen = nt->hlen + sizeof(struct iphdr);
@@ -376,6 +381,10 @@ static struct ip_tunnel *ip_tunnel_create(struct net *net,
 	dev->max_mtu = 0xFFF8 - dev->hard_header_len - t_hlen;
 	ip_tunnel_add(itn, nt);
 	return nt;
+
+err_dev_set_mtu:
+	unregister_netdevice(dev);
+	return ERR_PTR(err);
 }
 
 int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
@@ -1102,17 +1111,24 @@ int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
 	nt->fwmark = fwmark;
 	err = register_netdevice(dev);
 	if (err)
-		goto out;
+		goto err_register_netdevice;
 
 	if (dev->type == ARPHRD_ETHER && !tb[IFLA_ADDRESS])
 		eth_hw_addr_random(dev);
 
 	mtu = ip_tunnel_bind_dev(dev);
-	if (!tb[IFLA_MTU])
-		dev->mtu = mtu;
+	if (!tb[IFLA_MTU]) {
+		err = dev_set_mtu(dev, mtu);
+		if (err)
+			goto err_dev_set_mtu;
+	}
 
 	ip_tunnel_add(itn, nt);
-out:
+	return 0;
+
+err_dev_set_mtu:
+	unregister_netdevice(dev);
+err_register_netdevice:
 	return err;
 }
 EXPORT_SYMBOL_GPL(ip_tunnel_newlink);
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 8a9ac2d0f5d3..a9f7eca0b6a3 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -149,7 +149,7 @@ int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr,
 	struct in6_addr		*daddr, old_daddr;
 	__be32			fl6_flowlabel = 0;
 	__be32			old_fl6_flowlabel;
-	__be32			old_dport;
+	__be16			old_dport;
 	int			addr_type;
 	int			err;
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b3c1137ad0b8..b33d057ac5eb 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1626,11 +1626,10 @@ static void rt6_age_examine_exception(struct rt6_exception_bucket *bucket,
 		struct neighbour *neigh;
 		__u8 neigh_flags = 0;
 
-		neigh = dst_neigh_lookup(&rt->dst, &rt->rt6i_gateway);
-		if (neigh) {
+		neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway);
+		if (neigh)
 			neigh_flags = neigh->flags;
-			neigh_release(neigh);
-		}
+
 		if (!(neigh_flags & NTF_ROUTER)) {
 			RT6_TRACE("purging route %p via non-router but gateway\n",
 				  rt);
@@ -1654,7 +1653,8 @@ void rt6_age_exceptions(struct rt6_info *rt,
 	if (!rcu_access_pointer(rt->rt6i_exception_bucket))
 		return;
 
-	spin_lock_bh(&rt6_exception_lock);
+	rcu_read_lock_bh();
+	spin_lock(&rt6_exception_lock);
 	bucket = rcu_dereference_protected(rt->rt6i_exception_bucket,
 				    lockdep_is_held(&rt6_exception_lock));
 
@@ -1668,7 +1668,8 @@ void rt6_age_exceptions(struct rt6_info *rt,
 			bucket++;
 		}
 	}
-	spin_unlock_bh(&rt6_exception_lock);
+	spin_unlock(&rt6_exception_lock);
+	rcu_read_unlock_bh();
 }
 
 struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table,
@@ -4112,6 +4113,7 @@ static int ip6_route_multipath_add(struct fib6_config *cfg,
 				r_cfg.fc_encap_type = nla_get_u16(nla);
 		}
 
+		r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK);
 		rt = ip6_route_info_create(&r_cfg, extack);
 		if (IS_ERR(rt)) {
 			err = PTR_ERR(rt);
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index bd6cc688bd19..7a78dcfda68a 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -93,7 +93,8 @@ static void set_tun_src(struct net *net, struct net_device *dev,
 /* encapsulate an IPv6 packet within an outer IPv6 header with a given SRH */
 int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh, int proto)
 {
-	struct net *net = dev_net(skb_dst(skb)->dev);
+	struct dst_entry *dst = skb_dst(skb);
+	struct net *net = dev_net(dst->dev);
 	struct ipv6hdr *hdr, *inner_hdr;
 	struct ipv6_sr_hdr *isrh;
 	int hdrlen, tot_len, err;
@@ -134,7 +135,7 @@ int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh, int proto)
 	isrh->nexthdr = proto;
 
 	hdr->daddr = isrh->segments[isrh->first_segment];
-	set_tun_src(net, skb->dev, &hdr->daddr, &hdr->saddr);
+	set_tun_src(net, ip6_dst_idev(dst)->dev, &hdr->daddr, &hdr->saddr);
 
 #ifdef CONFIG_IPV6_SEG6_HMAC
 	if (sr_has_hmac(isrh)) {
@@ -418,7 +419,7 @@ static int seg6_build_state(struct nlattr *nla,
 
 	slwt = seg6_lwt_lwtunnel(newts);
 
-	err = dst_cache_init(&slwt->cache, GFP_KERNEL);
+	err = dst_cache_init(&slwt->cache, GFP_ATOMIC);
 	if (err) {
 		kfree(newts);
 		return err;
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 1f466d12a6bc..94c7ee9df33b 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -212,6 +212,7 @@ static const char *hw_flag_names[] = {
 	FLAG(REPORTS_LOW_ACK),
 	FLAG(SUPPORTS_TX_FRAG),
 	FLAG(SUPPORTS_TDLS_BUFFER_STA),
+	FLAG(DOESNT_SUPPORT_QOS_NDP),
 #undef FLAG
 };
 
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 39b660b9a908..5f303abac5ad 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -896,7 +896,8 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
 	struct ieee80211_hdr_3addr *nullfunc;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
-	skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, true);
+	skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
+		!ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
 	if (!skb)
 		return;
 
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index b3f2c15affa7..9d2cabf1dc7e 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -352,7 +352,7 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla,
 	return res;
 out:
 	if (res == ACT_P_CREATED)
-		tcf_idr_cleanup(*act, est);
+		tcf_idr_release(*act, bind);
 
 	return ret;
 }
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 06e380ae0928..7e06b9b62613 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -80,9 +80,12 @@ static void ipt_destroy_target(struct xt_entry_target *t)
 static void tcf_ipt_release(struct tc_action *a)
 {
 	struct tcf_ipt *ipt = to_ipt(a);
-	ipt_destroy_target(ipt->tcfi_t);
+
+	if (ipt->tcfi_t) {
+		ipt_destroy_target(ipt->tcfi_t);
+		kfree(ipt->tcfi_t);
+	}
 	kfree(ipt->tcfi_tname);
-	kfree(ipt->tcfi_t);
 }
 
 static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = {
@@ -187,7 +190,7 @@ err2:
 	kfree(tname);
 err1:
 	if (ret == ACT_P_CREATED)
-		tcf_idr_cleanup(*a, est);
+		tcf_idr_release(*a, bind);
 	return err;
 }
 
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 349beaffb29e..fef08835f26d 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -176,7 +176,7 @@ static int tcf_pedit_init(struct net *net, struct nlattr *nla,
 		p = to_pedit(*a);
 		keys = kmalloc(ksize, GFP_KERNEL);
 		if (keys == NULL) {
-			tcf_idr_cleanup(*a, est);
+			tcf_idr_release(*a, bind);
 			kfree(keys_ex);
 			return -ENOMEM;
 		}
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index 95d3c9097b25..faebf82b99f1 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -194,7 +194,7 @@ failure:
 	qdisc_put_rtab(P_tab);
 	qdisc_put_rtab(R_tab);
 	if (ret == ACT_P_CREATED)
-		tcf_idr_cleanup(*a, est);
+		tcf_idr_release(*a, bind);
 	return err;
 }
 
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index 425eac11f6da..b1f38063ada0 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -121,7 +121,7 @@ static int tcf_simp_init(struct net *net, struct nlattr *nla,
 		d = to_defact(*a);
 		ret = alloc_defdata(d, defdata);
 		if (ret < 0) {
-			tcf_idr_cleanup(*a, est);
+			tcf_idr_release(*a, bind);
 			return ret;
 		}
 		d->tcf_action = parm->action;
diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index d09565d6433e..7b0700f52b50 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -152,7 +152,7 @@ static int tcf_skbmod_init(struct net *net, struct nlattr *nla,
 	ASSERT_RTNL();
 	p = kzalloc(sizeof(struct tcf_skbmod_params), GFP_KERNEL);
 	if (unlikely(!p)) {
-		if (ovr)
+		if (ret == ACT_P_CREATED)
 			tcf_idr_release(*a, bind);
 		return -ENOMEM;
 	}
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index c2914e9a4a6f..c49cb61adedf 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -195,7 +195,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla,
 	ASSERT_RTNL();
 	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p) {
-		if (ovr)
+		if (ret == ACT_P_CREATED)
 			tcf_idr_release(*a, bind);
 		return -ENOMEM;
 	}