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openvswitch: Don't validate IPv6 label masks.

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When userspace doesn't provide a mask, OVS datapath generates a fully
unwildcarded mask for the flow by copying the flow and setting all bits
in all fields. For IPv6 label, this creates a mask that matches on the
upper 12 bits, causing the following error:

openvswitch: netlink: Invalid IPv6 flow label value (value=ffffffff, max=fffff)

This patch ignores the label validation check for masks, avoiding this
error.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Stringer 2014-11-19 13:54:49 -08:00 committed by David S. Miller
parent a5f6fc28d6
commit d3052bb5d3
1 changed files with 1 additions and 1 deletions
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2
net/openvswitch/flow_netlink.c
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@ -690,7 +690,7 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match, u64 attrs,
return -EINVAL;
}
if (ipv6_key->ipv6_label & htonl(0xFFF00000)) {
if (!is_mask && ipv6_key->ipv6_label & htonl(0xFFF00000)) {
OVS_NLERR("IPv6 flow label %x is out of range (max=%x).\n",
ntohl(ipv6_key->ipv6_label), (1 << 20) - 1);
return -EINVAL;