Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 146 insertions, 0 deletions

diff --git a/ripd/rip_offset.c b/ripd/rip_offset.c
new file mode 100644
index 0000000..4c93f71
--- /dev/null
+++ b/ripd/rip_offset.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* RIP offset-list
+ * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
+ */
+
+#include <zebra.h>
+
+#include "if.h"
+#include "prefix.h"
+#include "filter.h"
+#include "command.h"
+#include "linklist.h"
+#include "memory.h"
+
+#include "ripd/ripd.h"
+
+DEFINE_MTYPE_STATIC(RIPD, RIP_OFFSET_LIST, "RIP offset list");
+
+#define OFFSET_LIST_IN_NAME(O)  ((O)->direct[RIP_OFFSET_LIST_IN].alist_name)
+#define OFFSET_LIST_IN_METRIC(O)  ((O)->direct[RIP_OFFSET_LIST_IN].metric)
+
+#define OFFSET_LIST_OUT_NAME(O)  ((O)->direct[RIP_OFFSET_LIST_OUT].alist_name)
+#define OFFSET_LIST_OUT_METRIC(O)  ((O)->direct[RIP_OFFSET_LIST_OUT].metric)
+
+struct rip_offset_list *rip_offset_list_new(struct rip *rip, const char *ifname)
+{
+	struct rip_offset_list *offset;
+
+	offset = XCALLOC(MTYPE_RIP_OFFSET_LIST, sizeof(struct rip_offset_list));
+	offset->rip = rip;
+	offset->ifname = strdup(ifname);
+	listnode_add_sort(rip->offset_list_master, offset);
+
+	return offset;
+}
+
+void offset_list_del(struct rip_offset_list *offset)
+{
+	listnode_delete(offset->rip->offset_list_master, offset);
+	offset_list_free(offset);
+}
+
+void offset_list_free(struct rip_offset_list *offset)
+{
+	if (OFFSET_LIST_IN_NAME(offset))
+		free(OFFSET_LIST_IN_NAME(offset));
+	if (OFFSET_LIST_OUT_NAME(offset))
+		free(OFFSET_LIST_OUT_NAME(offset));
+	free(offset->ifname);
+	XFREE(MTYPE_RIP_OFFSET_LIST, offset);
+}
+
+struct rip_offset_list *rip_offset_list_lookup(struct rip *rip,
+					       const char *ifname)
+{
+	struct rip_offset_list *offset;
+	struct listnode *node, *nnode;
+
+	for (ALL_LIST_ELEMENTS(rip->offset_list_master, node, nnode, offset)) {
+		if (strcmp(offset->ifname, ifname) == 0)
+			return offset;
+	}
+	return NULL;
+}
+
+/* If metric is modified return 1. */
+int rip_offset_list_apply_in(struct prefix_ipv4 *p, struct interface *ifp,
+			     uint32_t *metric)
+{
+	struct rip_interface *ri = ifp->info;
+	struct rip_offset_list *offset;
+	struct access_list *alist;
+
+	/* Look up offset-list with interface name. */
+	offset = rip_offset_list_lookup(ri->rip, ifp->name);
+	if (offset && OFFSET_LIST_IN_NAME(offset)) {
+		alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
+
+		if (alist
+		    && access_list_apply(alist, (struct prefix *)p)
+			       == FILTER_PERMIT) {
+			*metric += OFFSET_LIST_IN_METRIC(offset);
+			return 1;
+		}
+		return 0;
+	}
+	/* Look up offset-list without interface name. */
+	offset = rip_offset_list_lookup(ri->rip, "*");
+	if (offset && OFFSET_LIST_IN_NAME(offset)) {
+		alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset));
+
+		if (alist
+		    && access_list_apply(alist, (struct prefix *)p)
+			       == FILTER_PERMIT) {
+			*metric += OFFSET_LIST_IN_METRIC(offset);
+			return 1;
+		}
+		return 0;
+	}
+	return 0;
+}
+
+/* If metric is modified return 1. */
+int rip_offset_list_apply_out(struct prefix_ipv4 *p, struct interface *ifp,
+			      uint32_t *metric)
+{
+	struct rip_interface *ri = ifp->info;
+	struct rip_offset_list *offset;
+	struct access_list *alist;
+
+	/* Look up offset-list with interface name. */
+	offset = rip_offset_list_lookup(ri->rip, ifp->name);
+	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
+		alist = access_list_lookup(AFI_IP,
+					   OFFSET_LIST_OUT_NAME(offset));
+
+		if (alist
+		    && access_list_apply(alist, (struct prefix *)p)
+			       == FILTER_PERMIT) {
+			*metric += OFFSET_LIST_OUT_METRIC(offset);
+			return 1;
+		}
+		return 0;
+	}
+
+	/* Look up offset-list without interface name. */
+	offset = rip_offset_list_lookup(ri->rip, "*");
+	if (offset && OFFSET_LIST_OUT_NAME(offset)) {
+		alist = access_list_lookup(AFI_IP,
+					   OFFSET_LIST_OUT_NAME(offset));
+
+		if (alist
+		    && access_list_apply(alist, (struct prefix *)p)
+			       == FILTER_PERMIT) {
+			*metric += OFFSET_LIST_OUT_METRIC(offset);
+			return 1;
+		}
+		return 0;
+	}
+	return 0;
+}
+
+int offset_list_cmp(struct rip_offset_list *o1, struct rip_offset_list *o2)
+{
+	return strcmp(o1->ifname, o2->ifname);
+}