From 718e3744195351130f4ce7dbe0613f4b3e23df93 Mon Sep 17 00:00:00 2001 From: paul Date: Fri, 13 Dec 2002 20:15:29 +0000 Subject: Initial revision --- ripd/rip_zebra.c | 691 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 691 insertions(+) create mode 100644 ripd/rip_zebra.c (limited to 'ripd/rip_zebra.c') 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 + * + * 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 + +#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); +} -- cgit v1.2.1