1 files changed, 6 insertions, 8 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 98a262b759ae..390b05d488b8 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1108,21 +1108,19 @@ static void ip6_append_data_mtu(unsigned int *mtu,
                                 unsigned int fragheaderlen,
                                 struct sk_buff *skb,
                                 struct rt6_info *rt,
-                                bool pmtuprobe)
+                                unsigned int orig_mtu)
 {
         if (!(rt->dst.flags & DST_XFRM_TUNNEL)) {
                 if (skb == NULL) {
                         /* first fragment, reserve header_len */
-                        *mtu = *mtu - rt->dst.header_len;
+                        *mtu = orig_mtu - rt->dst.header_len;
 
                 } else {
                         /*
                          * this fragment is not first, the headers
                          * space is regarded as data space.
                          */
-                        *mtu = min(*mtu, pmtuprobe ?
-                                   rt->dst.dev->mtu :
-                                   dst_mtu(rt->dst.path));
+                        *mtu = orig_mtu;
                 }
                 *maxfraglen = ((*mtu - fragheaderlen) & ~7)
                               + fragheaderlen - sizeof(struct frag_hdr);
@@ -1139,7 +1137,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct inet_cork *cork;
         struct sk_buff *skb, *skb_prev = NULL;
-        unsigned int maxfraglen, fragheaderlen, mtu;
+        unsigned int maxfraglen, fragheaderlen, mtu, orig_mtu;
         int exthdrlen;
         int dst_exthdrlen;
         int hh_len;
@@ -1221,6 +1219,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                 dst_exthdrlen = 0;
                 mtu = cork->fragsize;
         }
+        orig_mtu = mtu;
 
         hh_len = LL_RESERVED_SPACE(rt->dst.dev);
 
@@ -1300,8 +1299,7 @@ alloc_new_skb:
                         if (skb == NULL || skb_prev == NULL)
                                 ip6_append_data_mtu(&mtu, &maxfraglen,
                                                     fragheaderlen, skb, rt,
-                                                    np->pmtudisc ==
-                                                    IPV6_PMTUDISC_PROBE);
+                                                    orig_mtu);
 
                         skb_prev = skb;