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openvswitch: warn about missing first netlink attribute

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The first netlink attribute (value 0) must always be defined
as none/unspec.

Because we cannot change an existing UAPI, I add a comment to point the
mistake and avoid to propagate it in a new ovs API in the future.

Signed-off-by: Nicolas Dichtel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nicolas Dichtel authored and David S. Miller committed 2017-06-08 15:57:09 -04:00
1 parent 0db47e3d32
commit daa6630a31
1 file changed
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include/uapi/linux/openvswitch.h
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@@ -343,6 +343,7 @@ enum ovs_key_attr {
#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
enum ovs_tunnel_key_attr {
/* OVS_TUNNEL_KEY_ATTR_NONE, standard nl API requires this attribute! */
OVS_TUNNEL_KEY_ATTR_ID, /* be64 Tunnel ID */
OVS_TUNNEL_KEY_ATTR_IPV4_SRC, /* be32 src IP address. */
OVS_TUNNEL_KEY_ATTR_IPV4_DST, /* be32 dst IP address. */