freebsd-ports/net/quagga/files/extra-patch-ospf-nexthop

diff -Nur ./ospfd/ospf_asbr.c /tmp/quagga-0.99.20-patched/ospfd/ospf_asbr.c
--- ./ospfd/ospf_asbr.c	2011-09-29 16:59:32.000000000 +0400
+++ /tmp/quagga-0.99.20-patched/ospfd/ospf_asbr.c	2012-01-15 18:44:18.000000000 +0400
@@ -122,6 +122,7 @@
 {
   values->metric = -1;
   values->metric_type = -1;
+  values->nexthop.s_addr = -1;
 }
 
 int
diff -Nur ./ospfd/ospf_asbr.h /tmp/quagga-0.99.20-patched/ospfd/ospf_asbr.h
--- ./ospfd/ospf_asbr.h	2011-09-29 16:59:32.000000000 +0400
+++ /tmp/quagga-0.99.20-patched/ospfd/ospf_asbr.h	2012-01-15 18:44:18.000000000 +0400
@@ -27,6 +27,7 @@
 {
   int32_t metric;
   int32_t metric_type;
+  struct in_addr nexthop;
 };
 
 /* Redistributed external information. */
@@ -50,6 +51,7 @@
   struct route_map_set_values route_map_set;
 #define ROUTEMAP_METRIC(E)      (E)->route_map_set.metric
 #define ROUTEMAP_METRIC_TYPE(E) (E)->route_map_set.metric_type
+#define ROUTEMAP_NEXTHOP(E)     (E)->route_map_set.nexthop
 };
 
 #define OSPF_ASBR_CHECK_DELAY 30
diff -Nur ./ospfd/ospf_lsa.c /tmp/quagga-0.99.20-patched/ospfd/ospf_lsa.c
--- ./ospfd/ospf_lsa.c	2011-09-29 16:59:32.000000000 +0400
+++ /tmp/quagga-0.99.20-patched/ospfd/ospf_lsa.c	2012-01-15 18:44:18.000000000 +0400
@@ -1614,7 +1614,8 @@
   stream_put_ospf_metric (s, mvalue);
   
   /* Get forwarding address to nexthop if on the Connection List, else 0. */
-  fwd_addr = ospf_external_lsa_nexthop_get (ospf, ei->nexthop);
+  fwd_addr = (ei->route_map_set.nexthop.s_addr != -1) ?
+    ROUTEMAP_NEXTHOP (ei) : ospf_external_lsa_nexthop_get (ospf, ei->nexthop);
 
   /* Put forwarding address. */
   stream_put_ipv4 (s, fwd_addr.s_addr);
diff -Nur ./ospfd/ospf_routemap.c /tmp/quagga-0.99.20-patched/ospfd/ospf_routemap.c
--- ./ospfd/ospf_routemap.c	2011-09-29 16:59:32.000000000 +0400
+++ /tmp/quagga-0.99.20-patched/ospfd/ospf_routemap.c	2012-01-15 18:44:18.000000000 +0400
@@ -527,6 +527,62 @@
   route_set_metric_type_free,
 };
 
+/* `set ip next-hop IP_ADDRESS' */
+/* Set nexthop to object. */
+static route_map_result_t
+route_set_ip_nexthop (void *rule, struct prefix *prefix,
+		      route_map_object_t type, void *object)
+{
+  struct in_addr *address;
+  struct external_info *ei;
+
+  if (type == RMAP_OSPF)
+    {
+      /* Fetch routemap's rule information. */
+      address = rule;
+      ei = object;
+
+      /* Set metric out value. */
+      ei->route_map_set.nexthop = *address;
+    }
+  return RMAP_OKAY;
+}
+
+/* set ip next-hop compilation. */
+static void *
+route_set_ip_nexthop_compile (const char *arg)
+{
+  struct in_addr *address = NULL;
+  int ret;
+
+  address = XMALLOC (MTYPE_ROUTE_MAP_COMPILED, sizeof (struct in_addr));
+  ret = inet_aton (arg, address);
+
+  if (ret == 0)
+    {
+      XFREE (MTYPE_ROUTE_MAP_COMPILED, address);
+      return NULL;
+    }
+
+  return address;
+}
+
+/* Free route map's compiled `set ip next-hop' value. */
+static void
+route_set_ip_nexthop_free (void *rule)
+{
+  XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
+}
+
+/* Set ip next-hop rule structure. */
+struct route_map_rule_cmd route_set_ip_nexthop_cmd =
+{
+  "ip next-hop",
+  route_set_ip_nexthop,
+  route_set_ip_nexthop_compile,
+  route_set_ip_nexthop_free,
+};
+
 DEFUN (match_ip_nexthop,
        match_ip_nexthop_cmd,
        "match ip next-hop (<1-199>|<1300-2699>|WORD)",
@@ -781,6 +837,49 @@
        "OSPF[6] external type 1 metric\n"
        "OSPF[6] external type 2 metric\n")
 
+DEFUN (set_ip_nexthop,
+       set_ip_nexthop_cmd,
+       "set ip next-hop A.B.C.D",
+       SET_STR
+       IP_STR
+       "Next hop address\n"
+       "IP address of next hop\n")
+{
+  union sockunion su;
+  int ret;
+
+  ret = str2sockunion (argv[0], &su);
+  if (ret < 0)
+    {
+      vty_out (vty, "%% Malformed Next-hop address%s", VTY_NEWLINE);
+      return CMD_WARNING;
+    }
+
+  return ospf_route_set_add (vty, vty->index, "ip next-hop", argv[0]);
+}
+
+DEFUN (no_set_ip_nexthop,
+       no_set_ip_nexthop_cmd,
+       "no set ip next-hop",
+       NO_STR
+       SET_STR
+       "Next hop address\n")
+{
+  if (argc == 0)
+    return ospf_route_set_delete (vty, vty->index, "ip next-hop", NULL);
+
+  return ospf_route_set_delete (vty, vty->index, "ip next-hop", argv[0]);
+}
+
+ALIAS (no_set_ip_nexthop,
+       no_set_ip_nexthop_val_cmd,
+       "no set ip next-hop A.B.C.D",
+       NO_STR
+       SET_STR
+       IP_STR
+       "Next hop address\n"
+       "IP address of next hop\n")
+
 /* Route-map init */
 void
 ospf_route_map_init (void)
@@ -800,6 +899,7 @@
 
   route_map_install_set (&route_set_metric_cmd);
   route_map_install_set (&route_set_metric_type_cmd);
+  route_map_install_set (&route_set_ip_nexthop_cmd);
 
   install_element (RMAP_NODE, &match_ip_nexthop_cmd);
   install_element (RMAP_NODE, &no_match_ip_nexthop_cmd);
@@ -823,4 +923,7 @@
   install_element (RMAP_NODE, &set_metric_type_cmd);
   install_element (RMAP_NODE, &no_set_metric_type_cmd);
   install_element (RMAP_NODE, &no_set_metric_type_val_cmd);
+  install_element (RMAP_NODE, &set_ip_nexthop_cmd);
+  install_element (RMAP_NODE, &no_set_ip_nexthop_cmd);
+  install_element (RMAP_NODE, &no_set_ip_nexthop_val_cmd);
 }