Initial revision

1 files changed, 691 insertions, 0 deletions

diff --git a/ripd/rip_zebra.c b/ripd/rip_zebra.c
new file mode 100644
index 00000000..b6caf3b0
--- /dev/null
+++ b/ripd/rip_zebra.c
@@ -0,0 +1,691 @@
+/* RIPd and zebra interface.
+ * Copyright (C) 1997, 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
+ */
+
+#include <zebra.h>
+
+#include "command.h"
+#include "prefix.h"
+#include "stream.h"
+#include "routemap.h"
+#include "zclient.h"
+#include "log.h"
+#include "ripd/ripd.h"
+#include "ripd/rip_debug.h"
+
+/* All information about zebra. */
+struct zclient *zclient = NULL;
+
+/* Callback prototypes for zebra client service. */
+int rip_interface_add (int, struct zclient *, zebra_size_t);
+int rip_interface_delete (int, struct zclient *, zebra_size_t);
+int rip_interface_address_add (int, struct zclient *, zebra_size_t);
+int rip_interface_address_delete (int, struct zclient *, zebra_size_t);
+int rip_interface_up (int, struct zclient *, zebra_size_t);
+int rip_interface_down (int, struct zclient *, zebra_size_t);
+
+/* RIPd to zebra command interface. */
+void
+rip_zebra_ipv4_add (struct prefix_ipv4 *p, struct in_addr *nexthop, 
+		    u_int32_t metric, u_char distance)
+{
+  struct zapi_ipv4 api;
+
+  if (zclient->redist[ZEBRA_ROUTE_RIP])
+    {
+      api.type = ZEBRA_ROUTE_RIP;
+      api.flags = 0;
+      api.message = 0;
+      SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
+      api.nexthop_num = 1;
+      api.nexthop = &nexthop;
+      api.ifindex_num = 0;
+      SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
+      api.metric = metric;
+
+      if (distance && distance != ZEBRA_RIP_DISTANCE_DEFAULT)
+	{
+	  SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE);
+	  api.distance = distance;
+	}
+
+      zapi_ipv4_add (zclient, p, &api);
+
+      rip_global_route_changes++;
+    }
+}
+
+void
+rip_zebra_ipv4_delete (struct prefix_ipv4 *p, struct in_addr *nexthop, 
+		       u_int32_t metric)
+{
+  struct zapi_ipv4 api;
+
+  if (zclient->redist[ZEBRA_ROUTE_RIP])
+    {
+      api.type = ZEBRA_ROUTE_RIP;
+      api.flags = 0;
+      api.message = 0;
+      SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
+      api.nexthop_num = 1;
+      api.nexthop = &nexthop;
+      api.ifindex_num = 0;
+      SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
+      api.metric = metric;
+
+      zapi_ipv4_delete (zclient, p, &api);
+
+      rip_global_route_changes++;
+    }
+}
+
+/* Zebra route add and delete treatment. */
+int
+rip_zebra_read_ipv4 (int command, struct zclient *zclient, zebra_size_t length)
+{
+  struct stream *s;
+  struct zapi_ipv4 api;
+  unsigned long ifindex;
+  struct in_addr nexthop;
+  struct prefix_ipv4 p;
+  
+  s = zclient->ibuf;
+  ifindex = 0;
+  nexthop.s_addr = 0;
+
+  /* Type, flags, message. */
+  api.type = stream_getc (s);
+  api.flags = stream_getc (s);
+  api.message = stream_getc (s);
+
+  /* IPv4 prefix. */
+  memset (&p, 0, sizeof (struct prefix_ipv4));
+  p.family = AF_INET;
+  p.prefixlen = stream_getc (s);
+  stream_get (&p.prefix, s, PSIZE (p.prefixlen));
+
+  /* Nexthop, ifindex, distance, metric. */
+  if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
+    {
+      api.nexthop_num = stream_getc (s);
+      nexthop.s_addr = stream_get_ipv4 (s);
+    }
+  if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
+    {
+      api.ifindex_num = stream_getc (s);
+      ifindex = stream_getl (s);
+    }
+  if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
+    api.distance = stream_getc (s);
+  if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
+    api.metric = stream_getl (s);
+
+  /* Then fetch IPv4 prefixes. */
+  if (command == ZEBRA_IPV4_ROUTE_ADD)
+    rip_redistribute_add (api.type, RIP_ROUTE_REDISTRIBUTE, &p, ifindex, &nexthop);
+  else 
+    rip_redistribute_delete (api.type, RIP_ROUTE_REDISTRIBUTE, &p, ifindex);
+
+  return 0;
+}
+
+void
+rip_zclient_reset ()
+{
+  zclient_reset (zclient);
+}
+
+/* RIP route-map set for redistribution */
+void
+rip_routemap_set (int type, char *name)
+{
+  if (rip->route_map[type].name)
+    free(rip->route_map[type].name);
+
+  rip->route_map[type].name = strdup (name);
+  rip->route_map[type].map = route_map_lookup_by_name (name);
+}
+
+void
+rip_redistribute_metric_set (int type, int metric)
+{
+  rip->route_map[type].metric_config = 1;
+  rip->route_map[type].metric = metric;
+}
+
+int
+rip_metric_unset (int type,int metric)
+{
+#define DONT_CARE_METRIC_RIP 17  
+  if (metric != DONT_CARE_METRIC_RIP &&
+      rip->route_map[type].metric != metric)
+    return 1;
+  rip->route_map[type].metric_config = 0;
+  rip->route_map[type].metric = 0;
+  return 0;
+}
+
+/* RIP route-map unset for redistribution */
+int
+rip_routemap_unset (int type,char *name)
+{
+  if (! rip->route_map[type].name ||
+      (name != NULL && strcmp(rip->route_map[type].name,name)))
+    return 1;
+
+  free (rip->route_map[type].name);
+  rip->route_map[type].name = NULL;
+  rip->route_map[type].map = NULL;
+
+  return 0;
+}
+
+/* Redistribution types */
+static struct {
+  int type;
+  int str_min_len;
+  char *str;
+} redist_type[] = {
+  {ZEBRA_ROUTE_KERNEL,  1, "kernel"},
+  {ZEBRA_ROUTE_CONNECT, 1, "connected"},
+  {ZEBRA_ROUTE_STATIC,  1, "static"},
+  {ZEBRA_ROUTE_OSPF,    1, "ospf"},
+  {ZEBRA_ROUTE_BGP,     1, "bgp"},
+  {0, 0, NULL}
+};
+
+DEFUN (router_zebra,
+       router_zebra_cmd,
+       "router zebra",
+       "Enable a routing process\n"
+       "Make connection to zebra daemon\n")
+{
+  vty->node = ZEBRA_NODE;
+  zclient->enable = 1;
+  zclient_start (zclient);
+  return CMD_SUCCESS;
+}
+
+DEFUN (no_router_zebra,
+       no_router_zebra_cmd,
+       "no router zebra",
+       NO_STR
+       "Enable a routing process\n"
+       "Make connection to zebra daemon\n")
+{
+  zclient->enable = 0;
+  zclient_stop (zclient);
+  return CMD_SUCCESS;
+}
+
+int
+rip_redistribute_set (int type)
+{
+  if (zclient->redist[type])
+    return CMD_SUCCESS;
+
+  zclient->redist[type] = 1;
+
+  if (zclient->sock > 0)
+    zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient->sock, type);
+
+  return CMD_SUCCESS;
+}
+
+int
+rip_redistribute_unset (int type)
+{
+  if (! zclient->redist[type])
+    return CMD_SUCCESS;
+
+  zclient->redist[type] = 0;
+
+  if (zclient->sock > 0)
+    zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient->sock, type);
+
+  /* Remove the routes from RIP table. */
+  rip_redistribute_withdraw (type);
+
+  return CMD_SUCCESS;
+}
+
+int
+rip_redistribute_check (int type)
+{
+  return (zclient->redist[type]);
+}
+
+void
+rip_redistribute_clean ()
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++)
+    {
+      if (zclient->redist[redist_type[i].type])
+	{
+	  if (zclient->sock > 0)
+	    zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE,
+				     zclient->sock, redist_type[i].type);
+
+	  zclient->redist[redist_type[i].type] = 0;
+
+	  /* Remove the routes from RIP table. */
+	  rip_redistribute_withdraw (redist_type[i].type);
+	}
+    }
+}
+
+DEFUN (rip_redistribute_rip,
+       rip_redistribute_rip_cmd,
+       "redistribute rip",
+       "Redistribute information from another routing protocol\n"
+       "Routing Information Protocol (RIP)\n")
+{
+  zclient->redist[ZEBRA_ROUTE_RIP] = 1;
+  return CMD_SUCCESS;
+}
+
+DEFUN (no_rip_redistribute_rip,
+       no_rip_redistribute_rip_cmd,
+       "no redistribute rip",
+       NO_STR
+       "Redistribute information from another routing protocol\n"
+       "Routing Information Protocol (RIP)\n")
+{
+  zclient->redist[ZEBRA_ROUTE_RIP] = 0;
+  return CMD_SUCCESS;
+}
+
+DEFUN (rip_redistribute_type,
+       rip_redistribute_type_cmd,
+       "redistribute (kernel|connected|static|ospf|bgp)",
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n")
+{
+  int i;
+
+  for(i = 0; redist_type[i].str; i++) 
+    {
+      if (strncmp (redist_type[i].str, argv[0], 
+		   redist_type[i].str_min_len) == 0) 
+	{
+	  zclient_redistribute_set (zclient, redist_type[i].type);
+	  return CMD_SUCCESS;
+	}
+    }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (no_rip_redistribute_type,
+       no_rip_redistribute_type_cmd,
+       "no redistribute (kernel|connected|static|ospf|bgp)",
+       NO_STR
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n")
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++) 
+    {
+      if (strncmp(redist_type[i].str, argv[0], 
+		  redist_type[i].str_min_len) == 0) 
+	{
+	  rip_metric_unset (redist_type[i].type, DONT_CARE_METRIC_RIP);
+	  rip_routemap_unset (redist_type[i].type,NULL);
+	  rip_redistribute_unset (redist_type[i].type);
+	  return CMD_SUCCESS;
+        }
+    }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (rip_redistribute_type_routemap,
+       rip_redistribute_type_routemap_cmd,
+       "redistribute (kernel|connected|static|ospf|bgp) route-map WORD",
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n"
+       "Route map reference\n"
+       "Pointer to route-map entries\n")
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++) {
+    if (strncmp(redist_type[i].str, argv[0],
+		redist_type[i].str_min_len) == 0) 
+      {
+	rip_routemap_set (redist_type[i].type, argv[1]);
+	zclient_redistribute_set (zclient, redist_type[i].type);
+	return CMD_SUCCESS;
+      }
+  }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (no_rip_redistribute_type_routemap,
+       no_rip_redistribute_type_routemap_cmd,
+       "no redistribute (kernel|connected|static|ospf|bgp) route-map WORD",
+       NO_STR
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n"
+       "Route map reference\n"
+       "Pointer to route-map entries\n")
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++) 
+    {
+      if (strncmp(redist_type[i].str, argv[0], 
+		  redist_type[i].str_min_len) == 0) 
+	{
+	  if (rip_routemap_unset (redist_type[i].type,argv[1]))
+	    return CMD_WARNING;
+	  rip_redistribute_unset (redist_type[i].type);
+	  return CMD_SUCCESS;
+        }
+    }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (rip_redistribute_type_metric,
+       rip_redistribute_type_metric_cmd,
+       "redistribute (kernel|connected|static|ospf|bgp) metric <0-16>",
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n"
+       "Metric\n"
+       "Metric value\n")
+{
+  int i;
+  int metric;
+
+  metric = atoi (argv[1]);
+
+  for (i = 0; redist_type[i].str; i++) {
+    if (strncmp(redist_type[i].str, argv[0],
+		redist_type[i].str_min_len) == 0) 
+      {
+	rip_redistribute_metric_set (redist_type[i].type, metric);
+	zclient_redistribute_set (zclient, redist_type[i].type);
+	return CMD_SUCCESS;
+      }
+  }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (no_rip_redistribute_type_metric,
+       no_rip_redistribute_type_metric_cmd,
+       "no redistribute (kernel|connected|static|ospf|bgp) metric <0-16>",
+       NO_STR
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n"
+       "Metric\n"
+       "Metric value\n")
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++) 
+    {
+      if (strncmp(redist_type[i].str, argv[0], 
+		  redist_type[i].str_min_len) == 0) 
+	{
+	  if (rip_metric_unset (redist_type[i].type, atoi(argv[1])))
+	    return CMD_WARNING;
+	  rip_redistribute_unset (redist_type[i].type);
+	  return CMD_SUCCESS;
+        }
+    }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+DEFUN (no_rip_redistribute_type_metric_routemap,
+       no_rip_redistribute_type_metric_routemap_cmd,
+       "no redistribute (kernel|connected|static|ospf|bgp) metric <0-16> route-map WORD",
+       NO_STR
+       "Redistribute information from another routing protocol\n"
+       "Kernel routes\n"
+       "Connected\n"
+       "Static routes\n"
+       "Open Shortest Path First (OSPF)\n"
+       "Border Gateway Protocol (BGP)\n"
+       "Metric\n"
+       "Metric value\n"
+       "Route map reference\n"
+       "Pointer to route-map entries\n")
+{
+  int i;
+
+  for (i = 0; redist_type[i].str; i++) 
+    {
+      if (strncmp(redist_type[i].str, argv[0], 
+		  redist_type[i].str_min_len) == 0) 
+	{
+	  if (rip_metric_unset (redist_type[i].type, atoi(argv[1])))
+	    return CMD_WARNING;
+	  if (rip_routemap_unset (redist_type[i].type, argv[2]))
+	    {
+	      rip_redistribute_metric_set(redist_type[i].type, atoi(argv[1]));   
+	      return CMD_WARNING;
+	    }
+	  rip_redistribute_unset (redist_type[i].type);
+	  return CMD_SUCCESS;
+        }
+    }
+
+  vty_out(vty, "Invalid type %s%s", argv[0],
+	  VTY_NEWLINE);
+
+  return CMD_WARNING;
+}
+
+/* Default information originate. */
+
+DEFUN (rip_default_information_originate,
+       rip_default_information_originate_cmd,
+       "default-information originate",
+       "Control distribution of default route\n"
+       "Distribute a default route\n")
+{
+  struct prefix_ipv4 p;
+
+  if (! rip->default_information)
+    {
+      memset (&p, 0, sizeof (struct prefix_ipv4));
+      p.family = AF_INET;
+
+      rip->default_information = 1;
+  
+      rip_redistribute_add (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0, NULL);
+    }
+
+  return CMD_SUCCESS;
+}
+
+DEFUN (no_rip_default_information_originate,
+       no_rip_default_information_originate_cmd,
+       "no default-information originate",
+       NO_STR
+       "Control distribution of default route\n"
+       "Distribute a default route\n")
+{
+  struct prefix_ipv4 p;
+
+  if (rip->default_information)
+    {
+      memset (&p, 0, sizeof (struct prefix_ipv4));
+      p.family = AF_INET;
+
+      rip->default_information = 0;
+  
+      rip_redistribute_delete (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0);
+    }
+
+  return CMD_SUCCESS;
+}
+
+/* RIP configuration write function. */
+int
+config_write_zebra (struct vty *vty)
+{
+  if (! zclient->enable)
+    {
+      vty_out (vty, "no router zebra%s", VTY_NEWLINE);
+      return 1;
+    }
+  else if (! zclient->redist[ZEBRA_ROUTE_RIP])
+    {
+      vty_out (vty, "router zebra%s", VTY_NEWLINE);
+      vty_out (vty, " no redistribute rip%s", VTY_NEWLINE);
+      return 1;
+    }
+  return 0;
+}
+
+int
+config_write_rip_redistribute (struct vty *vty, int config_mode)
+{
+  int i;
+  char *str[] = { "system", "kernel", "connected", "static", "rip",
+		  "ripng", "ospf", "ospf6", "bgp"};
+
+  for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
+    if (i != zclient->redist_default && zclient->redist[i])
+      {
+	if (config_mode)
+	  {
+	    if (rip->route_map[i].metric_config)
+	      {
+		if (rip->route_map[i].name)
+		  vty_out (vty, " redistribute %s metric %d route-map %s%s",
+			   str[i], rip->route_map[i].metric,
+			   rip->route_map[i].name,
+			   VTY_NEWLINE);
+		else
+		  vty_out (vty, " redistribute %s metric %d%s",
+			   str[i], rip->route_map[i].metric,
+			   VTY_NEWLINE);
+	      }
+	    else
+	      {
+		if (rip->route_map[i].name)
+		  vty_out (vty, " redistribute %s route-map %s%s",
+			   str[i], rip->route_map[i].name,
+			   VTY_NEWLINE);
+		else
+		  vty_out (vty, " redistribute %s%s", str[i],
+			   VTY_NEWLINE);
+	      }
+	  }
+	else
+	  vty_out (vty, " %s", str[i]);
+      }
+  return 0;
+}
+
+/* Zebra node structure. */
+struct cmd_node zebra_node =
+{
+  ZEBRA_NODE,
+  "%s(config-router)# ",
+};
+
+void
+rip_zclient_init ()
+{
+  /* Set default value to the zebra client structure. */
+  zclient = zclient_new ();
+  zclient_init (zclient, ZEBRA_ROUTE_RIP);
+  zclient->interface_add = rip_interface_add;
+  zclient->interface_delete = rip_interface_delete;
+  zclient->interface_address_add = rip_interface_address_add;
+  zclient->interface_address_delete = rip_interface_address_delete;
+  zclient->ipv4_route_add = rip_zebra_read_ipv4;
+  zclient->ipv4_route_delete = rip_zebra_read_ipv4;
+  zclient->interface_up = rip_interface_up;
+  zclient->interface_down = rip_interface_down;
+  
+  /* Install zebra node. */
+  install_node (&zebra_node, config_write_zebra);
+
+  /* Install command elements to zebra node. */ 
+  install_element (CONFIG_NODE, &router_zebra_cmd);
+  install_element (CONFIG_NODE, &no_router_zebra_cmd);
+  install_default (ZEBRA_NODE);
+  install_element (ZEBRA_NODE, &rip_redistribute_rip_cmd);
+  install_element (ZEBRA_NODE, &no_rip_redistribute_rip_cmd);
+
+  /* Install command elements to rip node. */
+  install_element (RIP_NODE, &rip_redistribute_type_cmd);
+  install_element (RIP_NODE, &rip_redistribute_type_routemap_cmd);
+  install_element (RIP_NODE, &rip_redistribute_type_metric_cmd);
+  install_element (RIP_NODE, &no_rip_redistribute_type_cmd);
+  install_element (RIP_NODE, &no_rip_redistribute_type_routemap_cmd);
+  install_element (RIP_NODE, &no_rip_redistribute_type_metric_cmd);
+  install_element (RIP_NODE, &no_rip_redistribute_type_metric_routemap_cmd);
+  install_element (RIP_NODE, &rip_default_information_originate_cmd);
+  install_element (RIP_NODE, &no_rip_default_information_originate_cmd);
+}