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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Jianlin Shi <jishi@redhat.com>,
        Hangbin Liu <liuhangbin@gmail.com>,
        "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.19 020/103] ip6_gre: update version related info when changing link
Date:   Tue, 29 Jan 2019 12:34:57 +0100
Message-Id: <20190129113200.753523317@linuxfoundation.org>
In-Reply-To: <20190129113159.567154026@linuxfoundation.org>
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4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hangbin Liu <liuhangbin@gmail.com>

[ Upstream commit 80b3671e9377916bf2b02e56113fa7377ce5705a ]

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

Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: 94d7d8f292870 ("ip6_gre: add erspan v2 support")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/ip6_gre.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1187,6 +1187,10 @@ static void ip6gre_tnl_copy_tnl_parm(str
 	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);
 }