net: neighbor: add fdb extended attribute (899426b3) · Commits · 戴 / test

Add an attribute to NDA which will contain all future fdb-specific attributes in order to avoid polluting the NDA namespace with e.g. bridge or vxlan specific attributes. The attribute is called NDA_FDB_EXT_ATTRS and the structure would look like: [NDA_FDB_EXT_ATTRS] = { [NFEA_xxx] } Signed-off-by:

Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

include/uapi/linux/neighbour.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ enum {
		NDA_SRC_VNI,
		NDA_PROTOCOL, /* Originator of entry */
		NDA_NH_ID,
		NDA_FDB_EXT_ATTRS,
		__NDA_MAX
		};

		@@ -172,4 +173,15 @@ enum {
		};
		#define NDTA_MAX (__NDTA_MAX - 1)

		/* embedded into NDA_FDB_EXT_ATTRS:
		* [NDA_FDB_EXT_ATTRS] = {
		* ...
		* }
		*/
		enum {
		NFEA_UNSPEC,
		__NFEA_MAX
		};
		#define NFEA_MAX (__NFEA_MAX - 1)

		#endif

net/core/neighbour.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1783,6 +1783,7 @@ const struct nla_policy nda_policy[NDA_MAX+1] = {
		[NDA_MASTER] = { .type = NLA_U32 },
		[NDA_PROTOCOL] = { .type = NLA_U8 },
		[NDA_NH_ID] = { .type = NLA_U32 },
		[NDA_FDB_EXT_ATTRS] = { .type = NLA_NESTED },
		};

		static int neigh_delete(struct sk_buff skb, struct nlmsghdr nlh,

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