1 files changed, 7 insertions, 8 deletions

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index df184616493f..73c6b63bba74 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -422,9 +422,6 @@ static void ip_copy_metadata(struct sk_buff *to, struct sk_buff *from)
         to->tc_index = from->tc_index;
 #endif
         nf_copy(to, from);
-#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
-        to->nf_trace = from->nf_trace;
-#endif
 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
         to->ipvs_property = from->ipvs_property;
 #endif
@@ -449,6 +446,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
         __be16 not_last_frag;
         struct rtable *rt = skb_rtable(skb);
         int err = 0;
+        bool forwarding = IPCB(skb)->flags & IPSKB_FORWARDED;
 
         dev = rt->dst.dev;
 
@@ -458,12 +456,13 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 
         iph = ip_hdr(skb);
 
+        mtu = ip_dst_mtu_maybe_forward(&rt->dst, forwarding);
         if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->local_df) ||
                      (IPCB(skb)->frag_max_size &&
-                      IPCB(skb)->frag_max_size > dst_mtu(&rt->dst)))) {
+                      IPCB(skb)->frag_max_size > mtu))) {
                 IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
                 icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
-                          htonl(ip_skb_dst_mtu(skb)));
+                          htonl(mtu));
                 kfree_skb(skb);
                 return -EMSGSIZE;
         }
@@ -473,7 +472,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
          */
 
         hlen = iph->ihl * 4;
-        mtu = dst_mtu(&rt->dst) - hlen; /* Size of data space */
+        mtu = mtu - hlen;       /* Size of data space */
 #ifdef CONFIG_BRIDGE_NETFILTER
         if (skb->nf_bridge)
                 mtu -= nf_bridge_mtu_reduction(skb);
@@ -1551,7 +1550,7 @@ void __init ip_init(void)
         ip_rt_init();
         inet_initpeers();
 
-#if defined(CONFIG_IP_MULTICAST) && defined(CONFIG_PROC_FS)
-        igmp_mc_proc_init();
+#if defined(CONFIG_IP_MULTICAST)
+        igmp_mc_init();
 #endif
 }