net: ip6_gre: do not report erspan_ver for ip6gre or ip6gretap
Report erspan version field to userspace in ip6gre_fill_info just for
erspan_v6 tunnels. Moreover report IFLA_GRE_ERSPAN_INDEX only for
erspan version 1.
The issue can be triggered with the following reproducer:
$ip link add name gre6 type ip6gre local 2001::1 remote 2002::2
$ip link set gre6 up
$ip -d link sh gre6
14: grep6@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1448 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/gre6 2001::1 peer 2002::2 promiscuity 0 minmtu 0 maxmtu 0
ip6gre remote 2002::2 local 2001::1 hoplimit 64 encaplimit 4 tclass 0x00 flowlabel 0x00000 erspan_index 0 erspan_ver 0 addrgenmode eui64
Fixes: 94d7d8f292
("ip6_gre: add erspan v2 support")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
2bdf700e53
Коммит
103d0244d2
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@ -2104,9 +2104,23 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
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struct __ip6_tnl_parm *p = &t->parms;
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__be16 o_flags = p->o_flags;
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if ((p->erspan_ver == 1 || p->erspan_ver == 2) &&
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!p->collect_md)
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o_flags |= TUNNEL_KEY;
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if (p->erspan_ver == 1 || p->erspan_ver == 2) {
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if (!p->collect_md)
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o_flags |= TUNNEL_KEY;
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if (nla_put_u8(skb, IFLA_GRE_ERSPAN_VER, p->erspan_ver))
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goto nla_put_failure;
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if (p->erspan_ver == 1) {
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if (nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, p->index))
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goto nla_put_failure;
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} else {
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if (nla_put_u8(skb, IFLA_GRE_ERSPAN_DIR, p->dir))
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goto nla_put_failure;
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if (nla_put_u16(skb, IFLA_GRE_ERSPAN_HWID, p->hwid))
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goto nla_put_failure;
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}
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}
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if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) ||
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nla_put_be16(skb, IFLA_GRE_IFLAGS,
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@ -2121,8 +2135,7 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
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nla_put_u8(skb, IFLA_GRE_ENCAP_LIMIT, p->encap_limit) ||
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nla_put_be32(skb, IFLA_GRE_FLOWINFO, p->flowinfo) ||
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nla_put_u32(skb, IFLA_GRE_FLAGS, p->flags) ||
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nla_put_u32(skb, IFLA_GRE_FWMARK, p->fwmark) ||
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nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, p->index))
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nla_put_u32(skb, IFLA_GRE_FWMARK, p->fwmark))
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goto nla_put_failure;
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if (nla_put_u16(skb, IFLA_GRE_ENCAP_TYPE,
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@ -2140,19 +2153,6 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
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goto nla_put_failure;
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}
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if (nla_put_u8(skb, IFLA_GRE_ERSPAN_VER, p->erspan_ver))
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goto nla_put_failure;
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if (p->erspan_ver == 1) {
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if (nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, p->index))
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goto nla_put_failure;
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} else if (p->erspan_ver == 2) {
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if (nla_put_u8(skb, IFLA_GRE_ERSPAN_DIR, p->dir))
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goto nla_put_failure;
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if (nla_put_u16(skb, IFLA_GRE_ERSPAN_HWID, p->hwid))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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