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authorNeale Ranns <nranns@cisco.com>2016-11-22 17:07:28 +0000
committerDamjan Marion <dmarion.lists@gmail.com>2017-01-27 19:53:46 +0000
commit32e1c010b0c34fd0984f7fc45fae648a182025c5 (patch)
tree06a440bdc9dc039ad0dcf866acc9e10a6ea5e2e7 /src/vnet/util/radix.h
parent6f692d6e5a8ffc920a728372ef773199bc5466c0 (diff)
IP Multicast FIB (mfib)
- IPv[46] mfib tables with support for (*,G/m), (*,G) and (S,G) exact and longest prefix match - Replication represented via a new replicate DPO. - RPF configuration and data-plane checking - data-plane signals sent to listening control planes. The functions of multicast forwarding entries differ from their unicast conterparts, so we introduce a new mfib_table_t and mfib_entry_t objects. However, we re-use the fib_path_list to resolve and build the entry's output list. the fib_path_list provides the service to construct a replicate DPO for multicast. 'make tests' is added to with two new suites; TEST=mfib, this is invocation of the CLI command 'test mfib' which deals with many path add/remove, flag set/unset scenarios, TEST=ip-mcast, data-plane forwarding tests. Updated applications to use the new MIFB functions; - IPv6 NS/RA. - DHCPv6 unit tests for these are undated accordingly. Change-Id: I49ec37b01f1b170335a5697541c8fd30e6d3a961 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/util/radix.h')
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diff --git a/src/vnet/util/radix.h b/src/vnet/util/radix.h
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+/* $NetBSD: radix.h,v 1.23 2016/11/15 01:50:06 ozaki-r Exp $ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)radix.h 8.2 (Berkeley) 10/31/94
+ */
+
+#ifndef _NET_RADIX_H_
+#define _NET_RADIX_H_
+
+#include <vlib/vlib.h>
+
+/*
+ * Radix search tree node layout.
+ */
+
+struct radix_node {
+ struct radix_mask *rn_mklist; /* list of masks contained in subtree */
+ struct radix_node *rn_p; /* parent */
+ i16 rn_b; /* bit offset; -1-index(netmask) */
+ u8 rn_bmask; /* node: mask for bit test*/
+ u8 rn_flags; /* enumerated next */
+#define RNF_NORMAL 1 /* leaf contains normal route */
+#define RNF_ROOT 2 /* leaf is root leaf for tree */
+#define RNF_ACTIVE 4 /* This node is alive (for rtfree) */
+ union {
+ struct { /* leaf only data: */
+ const char *rn_Key; /* object of search */
+ const char *rn_Mask; /* netmask, if present */
+ struct radix_node *rn_Dupedkey;
+ } rn_leaf;
+ struct { /* node only data: */
+ int rn_Off; /* where to start compare */
+ struct radix_node *rn_L;/* progeny */
+ struct radix_node *rn_R;/* progeny */
+ } rn_node;
+ } rn_u;
+#ifdef RN_DEBUG
+ i32 rn_info;
+ struct radix_node *rn_twin;
+ struct radix_node *rn_ybro;
+#endif
+};
+
+#define rn_dupedkey rn_u.rn_leaf.rn_Dupedkey
+#define rn_key rn_u.rn_leaf.rn_Key
+#define rn_mask rn_u.rn_leaf.rn_Mask
+#define rn_off rn_u.rn_node.rn_Off
+#define rn_l rn_u.rn_node.rn_L
+#define rn_r rn_u.rn_node.rn_R
+
+/*
+ * Annotations to tree concerning potential routes applying to subtrees.
+ */
+
+struct radix_mask {
+ i16 rm_b; /* bit offset; -1-index(netmask) */
+ i8 rm_unused; /* cf. rn_bmask */
+ u8 rm_flags; /* cf. rn_flags */
+ struct radix_mask *rm_mklist; /* more masks to try */
+ union {
+ const char *rmu_mask; /* the mask */
+ struct radix_node *rmu_leaf; /* for normal routes */
+ } rm_rmu;
+ i32 rm_refs; /* # of references to this struct */
+};
+
+#define rm_mask rm_rmu.rmu_mask
+#define rm_leaf rm_rmu.rmu_leaf /* extra field would make 32 bytes */
+
+struct radix_node_head {
+ struct radix_node *rnh_treetop;
+ i32 rnh_addrsize; /* permit, but not require fixed keys */
+ i32 rnh_pktsize; /* permit, but not require fixed keys */
+ struct radix_node *(*rnh_addaddr) /* add based on sockaddr */
+ (const void *v, const void *mask,
+ struct radix_node_head *head, struct radix_node nodes[]);
+ struct radix_node *(*rnh_addpkt) /* add based on packet hdr */
+ (const void *v, const void *mask,
+ struct radix_node_head *head, struct radix_node nodes[]);
+ struct radix_node *(*rnh_deladdr) /* remove based on sockaddr */
+ (const void *v, const void *mask, struct radix_node_head *head);
+ struct radix_node *(*rnh_delpkt) /* remove based on packet hdr */
+ (const void *v, const void *mask, struct radix_node_head *head);
+ struct radix_node *(*rnh_matchaddr) /* locate based on sockaddr */
+ (const void *v, struct radix_node_head *head);
+ struct radix_node *(*rnh_lookup) /* locate based on sockaddr */
+ (const void *v, const void *mask, struct radix_node_head *head);
+ struct radix_node *(*rnh_matchpkt) /* locate based on packet hdr */
+ (const void *v, struct radix_node_head *head);
+ struct radix_node rnh_nodes[3]; /* empty tree for common case */
+};
+
+void rn_init(void);
+int rn_inithead(void **, int);
+void rn_delayedinit(void **, int);
+int rn_inithead0(struct radix_node_head *, int);
+int rn_refines(const void *, const void *);
+int rn_walktree(struct radix_node_head *,
+ int (*)(struct radix_node *, void *),
+ void *);
+struct radix_node *
+ rn_search_matched(struct radix_node_head *,
+ int (*)(struct radix_node *, void *),
+ void *);
+struct radix_node
+ *rn_addmask(const void *, int, int),
+ *rn_addroute(const void *, const void *, struct radix_node_head *,
+ struct radix_node [2]),
+ *rn_delete1(const void *, const void *, struct radix_node_head *,
+ struct radix_node *),
+ *rn_delete(const void *, const void *, struct radix_node_head *),
+ *rn_insert(const void *, struct radix_node_head *, int *,
+ struct radix_node [2]),
+ *rn_lookup(const void *, const void *, struct radix_node_head *),
+ *rn_match(const void *, struct radix_node_head *),
+ *rn_newpair(const void *, int, struct radix_node[2]),
+ *rn_search(const void *, struct radix_node *),
+ *rn_search_m(const void *, struct radix_node *, const void *);
+
+#endif /* !_NET_RADIX_H_ */