164 	u32			if_id;  member
512 	u32			if_id;  member
986 	u32 if_id;		/* interface identifyer */  member
1487 				   unsigned short family, u32 if_id);
1488 struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id,
1639 					  u32 if_id, u8 type, int dir,
1644 				     const struct xfrm_mark *mark, u32 if_id,
1653 				 u8 mode, u32 reqid, u32 if_id, u8 proto,
1665 						u32 if_id);
1672 		 struct xfrm_encap_tmpl *encap, u32 if_id);
1968 static inline int xfrm_if_id_put(struct sk_buff *skb, __u32 if_id)  in xfrm_if_id_put()  argument
1972 	if (if_id)  in xfrm_if_id_put()
1973 		ret = nla_put_u32(skb, XFRMA_IF_ID, if_id);  in xfrm_if_id_put()