[PATCH net] ip6_gre: update version related info when changing link

[Hangbin Liu]

We forgot to update ip6erspan version related info when changing link,
which will cause setting new hwid failed.

Reported-by: Jianlin Shi <ji...@redhat.com>
Fixes: 94d7d8f292870 ("ip6_gre: add erspan v2 support")
Signed-off-by: Hangbin Liu <liuhang...@gmail.com>
---
 net/ipv6/ip6_gre.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 09d0826742f8..5ca0dbc077df 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1169,6 +1169,10 @@ static void ip6gre_tnl_copy_tnl_parm(struct ip6_tnl *t,
        t->parms.i_flags = p->i_flags;
        t->parms.o_flags = p->o_flags;
        t->parms.fwmark = p->fwmark;
+       t->parms.erspan_ver = p->erspan_ver;
+       t->parms.index = p->index;
+       t->parms.dir = p->dir;
+       t->parms.hwid = p->hwid;
        dst_cache_reset(&t->dst_cache);
 }
 
-- 
2.19.2