net: rtnetlink: add ndm flags and state mask attributes

Add ndm flags/state masks which will be used for bulk delete filtering.
All of these are used by the bridge and vxlan drivers. Also minimal attr
policy validation is added, it is up to ndo_fdb_del_bulk implementers to
further validate them.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
index db05fb5..39c565e 100644 (file)
--- a/include/uapi/linux/neighbour.h
+++ b/include/uapi/linux/neighbour.h
@@ -32,6 +32,8 @@ enum {
        NDA_NH_ID,
        NDA_FDB_EXT_ATTRS,
        NDA_FLAGS_EXT,
+       NDA_NDM_STATE_MASK,
+       NDA_NDM_FLAGS_MASK,
        __NDA_MAX
 };
 

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 520d50f..ab7fb9a 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4172,6 +4172,8 @@ EXPORT_SYMBOL(ndo_dflt_fdb_del);
 static const struct nla_policy fdb_del_bulk_policy[NDA_MAX + 1] = {
        [NDA_VLAN]      = { .type = NLA_U16 },
        [NDA_IFINDEX]   = NLA_POLICY_MIN(NLA_S32, 1),
+       [NDA_NDM_STATE_MASK]    = { .type = NLA_U16  },
+       [NDA_NDM_FLAGS_MASK]    = { .type = NLA_U8 },
 };
 
 static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,