X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=blobdiff_plain;f=net%2Fipv6%2Foutput_core.c;h=53a062187db1a4c00df818de6029a40346d337aa;hp=ab92a3673fbbddd9f3d32b69730c3b1b61fbcbde;hb=3ce9b35ff6de8dfebb0b0045e667c000f632e563;hpb=ae5dbf1ad83cb90921a400d15fb18afae66e1e56

diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index ab92a3673fbb..53a062187db1 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -5,6 +5,7 @@
 #include <linux/export.h>
 #include <net/ipv6.h>
 #include <net/ip6_fib.h>
+#include <net/addrconf.h>
 
 void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
 {
@@ -75,3 +76,24 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
 	return offset;
 }
 EXPORT_SYMBOL(ip6_find_1stfragopt);
+
+#if IS_ENABLED(CONFIG_IPV6)
+int ip6_dst_hoplimit(struct dst_entry *dst)
+{
+	int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
+	if (hoplimit == 0) {
+		struct net_device *dev = dst->dev;
+		struct inet6_dev *idev;
+
+		rcu_read_lock();
+		idev = __in6_dev_get(dev);
+		if (idev)
+			hoplimit = idev->cnf.hop_limit;
+		else
+			hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;
+		rcu_read_unlock();
+	}
+	return hoplimit;
+}
+EXPORT_SYMBOL(ip6_dst_hoplimit);
+#endif