1 files changed, 42 insertions, 8 deletions

diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index ecae35512b9b..d708b66e55cd 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -19,6 +19,7 @@
 #include <net/rtnetlink.h>
 #include <net/lwtunnel.h>
 #include <net/dst_cache.h>
+#include <net/netdev_lock.h>
 
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ipv6.h>
@@ -26,6 +27,13 @@
 #include <net/ip6_route.h>
 #endif
 
+/* Recursion limit for tunnel xmit to detect routing loops.
+ * Unlike XMIT_RECURSION_LIMIT (8) used in the no-qdisc path, tunnel
+ * recursion involves route lookups and full IP output, consuming much
+ * more stack per level, so a lower limit is needed.
+ */
+#define IP_TUNNEL_RECURSION_LIMIT	5
+
 /* Keep error state on tunnel for 30 sec */
 #define IPTUNNEL_ERR_TIMEO	(30*HZ)
 
@@ -372,7 +380,17 @@ static inline void ip_tunnel_init_flow(struct flowi4 *fl4,
 	fl4->flowi4_flags = flow_flags;
 }
 
-int ip_tunnel_init(struct net_device *dev);
+int __ip_tunnel_init(struct net_device *dev);
+#define ip_tunnel_init(DEV)			\
+({						\
+	struct net_device *__dev = (DEV);	\
+	int __res = __ip_tunnel_init(__dev);	\
+						\
+	if (!__res)				\
+		netdev_lockdep_set_classes(__dev);\
+	__res;					\
+})
+
 void ip_tunnel_uninit(struct net_device *dev);
 void  ip_tunnel_dellink(struct net_device *dev, struct list_head *head);
 struct net *ip_tunnel_get_link_net(const struct net_device *dev);
@@ -647,13 +665,29 @@ static inline int iptunnel_pull_offloads(struct sk_buff *skb)
 static inline void iptunnel_xmit_stats(struct net_device *dev, int pkt_len)
 {
 	if (pkt_len > 0) {
-		struct pcpu_sw_netstats *tstats = get_cpu_ptr(dev->tstats);
-
-		u64_stats_update_begin(&tstats->syncp);
-		u64_stats_add(&tstats->tx_bytes, pkt_len);
-		u64_stats_inc(&tstats->tx_packets);
-		u64_stats_update_end(&tstats->syncp);
-		put_cpu_ptr(tstats);
+		if (dev->pcpu_stat_type == NETDEV_PCPU_STAT_DSTATS) {
+			struct pcpu_dstats *dstats = get_cpu_ptr(dev->dstats);
+
+			u64_stats_update_begin(&dstats->syncp);
+			u64_stats_add(&dstats->tx_bytes, pkt_len);
+			u64_stats_inc(&dstats->tx_packets);
+			u64_stats_update_end(&dstats->syncp);
+			put_cpu_ptr(dstats);
+			return;
+		}
+		if (dev->pcpu_stat_type == NETDEV_PCPU_STAT_TSTATS) {
+			struct pcpu_sw_netstats *tstats = get_cpu_ptr(dev->tstats);
+
+			u64_stats_update_begin(&tstats->syncp);
+			u64_stats_add(&tstats->tx_bytes, pkt_len);
+			u64_stats_inc(&tstats->tx_packets);
+			u64_stats_update_end(&tstats->syncp);
+			put_cpu_ptr(tstats);
+			return;
+		}
+		pr_err_once("iptunnel_xmit_stats pcpu_stat_type=%d\n",
+			    dev->pcpu_stat_type);
+		WARN_ON_ONCE(1);
 		return;
 	}