proxmox-mirrors/mirror_frr
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_frr synced 2025-08-13 19:39:28 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

isisd: add support to import routes from other protocols

Browse Source 
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
This commit is contained in:
Christian Franke 2015-11-12 14:24:22 +01:00 committed by Donald Sharp
parent 6ac446878f
commit f3ccedaa3e
16 changed files with 1684 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
isisd/Makefile.am
View File

@ -17,14 +17,15 @@ libisis_a_SOURCES = \
isis_adjacency.c isis_lsp.c dict.c isis_circuit.c isis_pdu.c \
isis_tlv.c isisd.c isis_misc.c isis_zebra.c isis_dr.c \
isis_flags.c isis_dynhn.c iso_checksum.c isis_csm.c isis_events.c \
isis_spf.c isis_route.c isis_routemap.c
isis_spf.c isis_redist.c isis_route.c isis_routemap.c
noinst_HEADERS = \
isisd.h isis_pdu.h isis_tlv.h isis_adjacency.h isis_constants.h \
isis_lsp.h dict.h isis_circuit.h isis_misc.h isis_network.h \
isis_zebra.h isis_dr.h isis_flags.h isis_dynhn.h isis_common.h \
iso_checksum.h isis_csm.h isis_events.h isis_spf.h isis_route.h \
iso_checksum.h isis_csm.h isis_events.h isis_spf.h isis_redist.h \
isis_route.h isis_routemap.h \
include-netbsd/clnp.h include-netbsd/esis.h include-netbsd/iso.h
isisd_SOURCES = \

134
isisd/isis_lsp.c
View File

@ -5,9 +5,10 @@
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
@ -35,6 +36,7 @@
#include "if.h"
#include "checksum.h"
#include "md5.h"
#include "table.h"
#include "isisd/dict.h"
#include "isisd/isis_constants.h"
@ -1146,6 +1148,119 @@ lsp_next_frag (u_char frag_num, struct isis_lsp *lsp0, struct isis_area *area,
return lsp;
}
static void
lsp_build_ext_reach_ipv4(struct isis_lsp *lsp, struct isis_area *area,
struct tlvs *tlv_data)
{
struct route_table *er_table;
struct route_node *rn;
struct prefix_ipv4 *ipv4;
struct isis_ext_info *info;
struct ipv4_reachability *ipreach;
struct te_ipv4_reachability *te_ipreach;
er_table = get_ext_reach(area, AF_INET, lsp->level);
if (!er_table)
return;
for (rn = route_top(er_table); rn; rn = route_next(rn))
{
if (!rn->info)
continue;
ipv4 = (struct prefix_ipv4*)&rn->p;
info = rn->info;
if (area->oldmetric)
{
if (tlv_data->ipv4_ext_reachs == NULL)
{
tlv_data->ipv4_ext_reachs = list_new();
tlv_data->ipv4_ext_reachs->del = free_tlv;
}
ipreach = XMALLOC(MTYPE_ISIS_TLV, sizeof(*ipreach));
ipreach->prefix.s_addr = ipv4->prefix.s_addr;
masklen2ip(ipv4->prefixlen, &ipreach->mask);
ipreach->prefix.s_addr &= ipreach->mask.s_addr;
if ((info->metric & 0x3f) != info->metric)
ipreach->metrics.metric_default = 0x3f;
else
ipreach->metrics.metric_default = info->metric;
ipreach->metrics.metric_expense = METRICS_UNSUPPORTED;
ipreach->metrics.metric_error = METRICS_UNSUPPORTED;
ipreach->metrics.metric_delay = METRICS_UNSUPPORTED;
listnode_add(tlv_data->ipv4_ext_reachs, ipreach);
}
if (area->newmetric)
{
if (tlv_data->te_ipv4_reachs == NULL)
{
tlv_data->te_ipv4_reachs = list_new();
tlv_data->te_ipv4_reachs->del = free_tlv;
}
te_ipreach =
XCALLOC(MTYPE_ISIS_TLV,
sizeof(*te_ipreach) - 1 + PSIZE(ipv4->prefixlen));
if (info->metric > MAX_WIDE_PATH_METRIC)
te_ipreach->te_metric = htonl(MAX_WIDE_PATH_METRIC);
else
te_ipreach->te_metric = htonl(info->metric);
te_ipreach->control = ipv4->prefixlen & 0x3f;
memcpy(&te_ipreach->prefix_start, &ipv4->prefix.s_addr,
PSIZE(ipv4->prefixlen));
listnode_add(tlv_data->te_ipv4_reachs, te_ipreach);
}
}
}
static void
lsp_build_ext_reach_ipv6(struct isis_lsp *lsp, struct isis_area *area,
struct tlvs *tlv_data)
{
struct route_table *er_table;
struct route_node *rn;
struct prefix_ipv6 *ipv6;
struct isis_ext_info *info;
struct ipv6_reachability *ip6reach;
er_table = get_ext_reach(area, AF_INET6, lsp->level);
if (!er_table)
return;
for (rn = route_top(er_table); rn; rn = route_next(rn))
{
if (!rn->info)
continue;
ipv6 = (struct prefix_ipv6*)&rn->p;
info = rn->info;
if (tlv_data->ipv6_reachs == NULL)
{
tlv_data->ipv6_reachs = list_new();
tlv_data->ipv6_reachs->del = free_tlv;
}
ip6reach = XCALLOC(MTYPE_ISIS_TLV, sizeof(*ip6reach));
if (info->metric > MAX_WIDE_PATH_METRIC)
ip6reach->metric = htonl(MAX_WIDE_PATH_METRIC);
else
ip6reach->metric = htonl(info->metric);
ip6reach->control_info = DISTRIBUTION_EXTERNAL;
ip6reach->prefix_len = ipv6->prefixlen;
memcpy(ip6reach->prefix, ipv6->prefix.s6_addr, sizeof(ip6reach->prefix));
listnode_add(tlv_data->ipv6_reachs, ip6reach);
}
}
static void
lsp_build_ext_reach (struct isis_lsp *lsp, struct isis_area *area,
struct tlvs *tlv_data)
{
lsp_build_ext_reach_ipv4(lsp, area, tlv_data);
lsp_build_ext_reach_ipv6(lsp, area, tlv_data);
}
/*
* Builds the LSP data part. This func creates a new frag whenever
* area->lsp_frag_threshold is exceeded.
@ -1561,6 +1676,8 @@ lsp_build (struct isis_lsp *lsp, struct isis_area *area)
}
}
lsp_build_ext_reach(lsp, area, &tlv_data);
lsp_debug("ISIS (%s): LSP construction is complete. Serializing...", area->area_tag);
while (tlv_data.ipv4_int_reachs && listcount (tlv_data.ipv4_int_reachs))
@ -1570,12 +1687,25 @@ lsp_build (struct isis_lsp *lsp, struct isis_area *area)
lsp_tlv_fit (lsp, &tlv_data.ipv4_int_reachs,
&lsp->tlv_data.ipv4_int_reachs,
IPV4_REACH_LEN, area->lsp_frag_threshold,
tlv_add_ipv4_reachs);
tlv_add_ipv4_int_reachs);
if (tlv_data.ipv4_int_reachs && listcount (tlv_data.ipv4_int_reachs))
lsp = lsp_next_frag (LSP_FRAGMENT (lsp->lsp_header->lsp_id) + 1,
lsp0, area, level);
}
while (tlv_data.ipv4_ext_reachs && listcount (tlv_data.ipv4_ext_reachs))
{
if (lsp->tlv_data.ipv4_ext_reachs == NULL)
lsp->tlv_data.ipv4_ext_reachs = list_new ();
lsp_tlv_fit (lsp, &tlv_data.ipv4_ext_reachs,
&lsp->tlv_data.ipv4_ext_reachs,
IPV4_REACH_LEN, area->lsp_frag_threshold,
tlv_add_ipv4_ext_reachs);
if (tlv_data.ipv4_ext_reachs && listcount (tlv_data.ipv4_ext_reachs))
lsp = lsp_next_frag (LSP_FRAGMENT (lsp->lsp_header->lsp_id) + 1,
lsp0, area, level);
}
/* FIXME: We pass maximum te_ipv4_reachability length to the lsp_tlv_fit()
* for now. lsp_tlv_fit() needs to be fixed to deal with variable length
* TLVs (sub TLVs!). */

5
isisd/isis_main.c
View File

@ -34,6 +34,7 @@
#include "privs.h"
#include "sigevent.h"
#include "filter.h"
#include "plist.h"
#include "zclient.h"
#include "vrf.h"
#include "systemd.h"
@ -48,6 +49,7 @@
#include "isisd/isis_dynhn.h"
#include "isisd/isis_spf.h"
#include "isisd/isis_route.h"
#include "isisd/isis_routemap.h"
#include "isisd/isis_zebra.h"
/* Default configuration file name */
@ -339,9 +341,12 @@ main (int argc, char **argv, char **envp)
memory_init ();
access_list_init();
vrf_init ();
prefix_list_init();
isis_init ();
isis_circuit_init ();
isis_spf_cmds_init ();
isis_redist_init ();
isis_route_map_init();
/* create the global 'isis' instance */
isis_new (1);

821
isisd/isis_redist.c Normal file
View File

@ -0,0 +1,821 @@
/*
* IS-IS Rout(e)ing protocol - isis_redist.c
*
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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 this program; 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 "if.h"
#include "linklist.h"
#include "memory.h"
#include "memtypes.h"
#include "prefix.h"
#include "routemap.h"
#include "stream.h"
#include "table.h"
#include "vty.h"
#include "isisd/dict.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_flags.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_circuit.h"
#include "isisd/isis_tlv.h"
#include "isisd/isisd.h"
#include "isisd/isis_lsp.h"
#include "isisd/isis_route.h"
#include "isisd/isis_zebra.h"
static int
redist_protocol(int family)
{
if (family == AF_INET)
return 0;
if (family == AF_INET6)
return 1;
assert(!"Unsupported address family!");
}
static int
is_default(struct prefix *p)
{
if (p->family == AF_INET)
if (p->u.prefix4.s_addr == 0 && p->prefixlen == 0)
return 1;
if (p->family == AF_INET6)
if (IN6_IS_ADDR_UNSPECIFIED(&p->u.prefix6) && p->prefixlen == 0)
return 1;
return 0;
}
static struct route_table*
get_ext_info(struct isis *i, int family)
{
int protocol = redist_protocol(family);
return i->ext_info[protocol];
}
static struct isis_redist*
get_redist_settings(struct isis_area *area, int family, int type, int level)
{
int protocol = redist_protocol(family);
return &area->redist_settings[protocol][type][level-1];
}
struct route_table*
get_ext_reach(struct isis_area *area, int family, int level)
{
int protocol = redist_protocol(family);
return area->ext_reach[protocol][level-1];
}
static struct route_node *
isis_redist_route_node_create(route_table_delegate_t *delegate,
struct route_table *table)
{
struct route_node *node;
node = XCALLOC(MTYPE_ROUTE_NODE, sizeof(*node));
return node;
}
static void
isis_redist_route_node_destroy(route_table_delegate_t *delegate,
struct route_table *table,
struct route_node *node)
{
if (node->info)
XFREE(MTYPE_ISIS, node->info);
XFREE (MTYPE_ROUTE_NODE, node);
}
static route_table_delegate_t isis_redist_rt_delegate = {
.create_node = isis_redist_route_node_create,
.destroy_node = isis_redist_route_node_destroy
};
/* Install external reachability information into a
* specific area for a specific level.
* Schedule an lsp regenerate if necessary */
static void
isis_redist_install(struct isis_area *area, int level,
struct prefix *p, struct isis_ext_info *info)
{
int family = p->family;
struct route_table *er_table = get_ext_reach(area, family, level);
struct route_node *er_node;
if (!er_table)
{
zlog_warn("%s: External reachability table of area %s"
" is not initialized.", __func__, area->area_tag);
return;
}
er_node = route_node_get(er_table, p);
if (er_node->info)
{
route_unlock_node(er_node);
/* Don't update/reschedule lsp generation if nothing changed. */
if (!memcmp(er_node->info, info, sizeof(*info)))
return;
}
else
{
er_node->info = XMALLOC(MTYPE_ISIS, sizeof(*info));
}
memcpy(er_node->info, info, sizeof(*info));
lsp_regenerate_schedule(area, level, 0);
}
/* Remove external reachability information from a
* specific area for a specific level.
* Schedule an lsp regenerate if necessary. */
static void
isis_redist_uninstall(struct isis_area *area, int level, struct prefix *p)
{
int family = p->family;
struct route_table *er_table = get_ext_reach(area, family, level);
struct route_node *er_node;
if (!er_table)
{
zlog_warn("%s: External reachability table of area %s"
" is not initialized.", __func__, area->area_tag);
return;
}
er_node = route_node_lookup(er_table, p);
if (!er_node)
return;
else
route_unlock_node(er_node);
if (!er_node->info)
return;
route_unlock_node(er_node);
lsp_regenerate_schedule(area, level, 0);
}
/* Update external reachability info of area for a given level
* and prefix, using the given redistribution settings. */
static void
isis_redist_update_ext_reach(struct isis_area *area, int level,
struct isis_redist *redist, struct prefix *p,
struct isis_ext_info *info)
{
struct isis_ext_info area_info;
route_map_result_t map_ret;
memcpy(&area_info, info, sizeof(area_info));
if (redist->metric != 0xffffffff)
area_info.metric = redist->metric;
if (redist->map_name)
{
map_ret = route_map_apply(redist->map, p, RMAP_ISIS, &area_info);
if (map_ret == RMAP_DENYMATCH)
area_info.distance = 255;
}
/* Allow synthesized default routes only on always orignate */
if (area_info.origin == DEFAULT_ROUTE
&& redist->redist != DEFAULT_ORIGINATE_ALWAYS)
area_info.distance = 255;
if (area_info.distance < 255)
isis_redist_install(area, level, p, &area_info);
else
isis_redist_uninstall(area, level, p);
}
static void
isis_redist_ensure_default(struct isis *isis, int family)
{
struct prefix p;
struct route_table *ei_table = get_ext_info(isis, family);
struct route_node *ei_node;
struct isis_ext_info *info;
if (family == AF_INET)
{
p.family = AF_INET;
p.prefixlen = 0;
memset(&p.u.prefix4, 0, sizeof(p.u.prefix4));
}
else if (family == AF_INET6)
{
p.family = AF_INET6;
p.prefixlen = 0;
memset(&p.u.prefix6, 0, sizeof(p.u.prefix6));
}
else
assert(!"Unknown family!");
ei_node = route_node_get(ei_table, &p);
if (ei_node->info)
{
route_unlock_node(ei_node);
return;
}
ei_node->info = XCALLOC(MTYPE_ISIS, sizeof(struct isis_ext_info));
info = ei_node->info;
info->origin = DEFAULT_ROUTE;
info->distance = 254;
info->metric = MAX_WIDE_PATH_METRIC;
}
/* Handle notification about route being added */
void
isis_redist_add(int type, struct prefix *p, u_char distance, uint32_t metric)
{
int family = p->family;
struct route_table *ei_table = get_ext_info(isis, family);
struct route_node *ei_node;
struct isis_ext_info *info;
struct listnode *node;
struct isis_area *area;
int level;
struct isis_redist *redist;
char debug_buf[BUFSIZ];
prefix2str(p, debug_buf, sizeof(debug_buf));
zlog_debug("%s: New route %s from %s.", __func__, debug_buf,
zebra_route_string(type));
if (!ei_table)
{
zlog_warn("%s: External information table not initialized.",
__func__);
return;
}
ei_node = route_node_get(ei_table, p);
if (ei_node->info)
route_unlock_node(ei_node);
else
ei_node->info = XCALLOC(MTYPE_ISIS, sizeof(struct isis_ext_info));
info = ei_node->info;
info->origin = type;
info->distance = distance;
info->metric = metric;
if (is_default(p))
type = DEFAULT_ROUTE;
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
for (level = 1; level <= ISIS_LEVELS; level++)
{
redist = get_redist_settings(area, family, type, level);
if (!redist->redist)
continue;
isis_redist_update_ext_reach(area, level, redist, p, info);
}
}
void
isis_redist_delete(int type, struct prefix *p)
{
int family = p->family;
struct route_table *ei_table = get_ext_info(isis, family);
struct route_node *ei_node;
struct listnode *node;
struct isis_area *area;
int level;
struct isis_redist *redist;
char debug_buf[BUFSIZ];
prefix2str(p, debug_buf, sizeof(debug_buf));
zlog_debug("%s: Removing route %s from %s.", __func__, debug_buf,
zebra_route_string(type));
if (is_default(p))
{
/* Don't remove default route but add synthetic route for use
* by "default-information originate always". Areas without the
* "always" setting will ignore routes with origin DEFAULT_ROUTE. */
isis_redist_add(DEFAULT_ROUTE, p, 254, MAX_WIDE_PATH_METRIC);
return;
}
if (!ei_table)
{
zlog_warn("%s: External information table not initialized.",
__func__);
return;
}
ei_node = route_node_lookup(ei_table, p);
if (!ei_node || !ei_node->info)
{
char buf[BUFSIZ];
prefix2str(p, buf, sizeof(buf));
zlog_warn("%s: Got a delete for %s route %s, but that route"
" was never added.", __func__, zebra_route_string(type),
buf);
if (ei_node)
route_unlock_node(ei_node);
return;
}
route_unlock_node(ei_node);
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
for (level = 1; level < ISIS_LEVELS; level++)
{
redist = get_redist_settings(area, family, type, level);
if (!redist->redist)
continue;
isis_redist_uninstall(area, level, p);
}
route_unlock_node(ei_node);
}
static void
isis_redist_routemap_set(struct isis_redist *redist, const char *routemap)
{
if (redist->map_name) {
XFREE(MTYPE_ISIS, redist->map_name);
redist->map = NULL;
}
if (routemap && strlen(routemap)) {
redist->map_name = XSTRDUP(MTYPE_ISIS, routemap);
redist->map = route_map_lookup_by_name(routemap);
}
}
static void
isis_redist_update_zebra_subscriptions(struct isis *isis)
{
struct listnode *node;
struct isis_area *area;
int type;
int level;
int protocol;
char do_subscribe[ZEBRA_ROUTE_MAX + 1];
memset(do_subscribe, 0, sizeof(do_subscribe));
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++)
for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++)
for (level = 0; level < ISIS_LEVELS; level++)
if (area->redist_settings[protocol][type][level].redist)
do_subscribe[type] = 1;
for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++)
{
/* This field is actually controlling transmission of the IS-IS
* routes to Zebra and has nothing to do with redistribution,
* so skip it. */
if (type == ZEBRA_ROUTE_ISIS)
continue;
if (do_subscribe[type])
isis_zebra_redistribute_set(type);
else
isis_zebra_redistribute_unset(type);
}
}
static void
isis_redist_set(struct isis_area *area, int level,
int family, int type, uint32_t metric,
const char *routemap, int originate_type)
{
int protocol = redist_protocol(family);
struct isis_redist *redist = get_redist_settings(area, family, type, level);
int i;
struct route_table *ei_table;
struct route_node *rn;
struct isis_ext_info *info;
redist->redist = (type == DEFAULT_ROUTE) ? originate_type : 1;
redist->metric = metric;
isis_redist_routemap_set(redist, routemap);
if (!area->ext_reach[protocol][level-1])
{
area->ext_reach[protocol][level-1] =
route_table_init_with_delegate(&isis_redist_rt_delegate);
}
for (i = 0; i < REDIST_PROTOCOL_COUNT; i++)
if (!area->isis->ext_info[i])
{
area->isis->ext_info[i] =
route_table_init_with_delegate(&isis_redist_rt_delegate);
}
isis_redist_update_zebra_subscriptions(area->isis);
if (type == DEFAULT_ROUTE && originate_type == DEFAULT_ORIGINATE_ALWAYS)
isis_redist_ensure_default(area->isis, family);
ei_table = get_ext_info(area->isis, family);
for (rn = route_top(ei_table); rn; rn = route_next(rn))
{
if (!rn->info)
continue;
info = rn->info;
if (type == DEFAULT_ROUTE)
{
if (!is_default(&rn->p))
continue;
}
else
{
if (info->origin != type)
continue;
}
isis_redist_update_ext_reach(area, level, redist, &rn->p, info);
}
}
static void
isis_redist_unset(struct isis_area *area, int level,
int family, int type)
{
struct isis_redist *redist = get_redist_settings(area, family, type, level);
struct route_table *er_table = get_ext_reach(area, family, level);
struct route_node *rn;
struct isis_ext_info *info;
if (!redist->redist)
return;
redist->redist = 0;
if (!er_table)
{
zlog_warn("%s: External reachability table uninitialized.", __func__);
return;
}
for (rn = route_top(er_table); rn; rn = route_next(rn))
{
if (!rn->info)
continue;
info = rn->info;
if (type == DEFAULT_ROUTE)
{
if (!is_default(&rn->p))
continue;
}
else
{
if (info->origin != type)
continue;
}
route_unlock_node(rn);
}
lsp_regenerate_schedule(area, level, 0);
isis_redist_update_zebra_subscriptions(area->isis);
}
void
isis_redist_area_finish(struct isis_area *area)
{
int protocol;
int level;
int type;
for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++)
for (level = 0; level < ISIS_LEVELS; level++)
{
for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++)
{
struct isis_redist *redist;
redist = &area->redist_settings[protocol][type][level];
redist->redist = 0;
if (redist->map_name)
XFREE(MTYPE_ISIS, redist->map_name);
}
route_table_finish(area->ext_reach[protocol][level]);
}
isis_redist_update_zebra_subscriptions(area->isis);
}
DEFUN(isis_redistribute,
isis_redistribute_cmd,
"redistribute (ipv4|ipv6) " QUAGGA_REDIST_STR_ISISD
" (level-1|level-2) {metric <0-16777215>|route-map WORD}",
REDIST_STR
"Redistribute IPv4 routes\n"
"Redistribute IPv6 routes\n"
QUAGGA_REDIST_HELP_STR_ISISD
"Redistribute into level-1\n"
"Redistribute into level-2\n"
"Metric for redistributed routes\n"
"ISIS default metric\n"
"Route map reference\n"
"Pointer to route-map entries\n")
{
struct isis_area *area = vty->index;
int family;
int afi;
int type;
int level;
unsigned long metric;
const char *routemap;
if (argc < 5)
return CMD_WARNING;
family = str2family(argv[0]);
if (family < 0)
return CMD_WARNING;
afi = family2afi(family);
if (!afi)
return CMD_WARNING;
type = proto_redistnum(afi, argv[1]);
if (type < 0 || type == ZEBRA_ROUTE_ISIS)
return CMD_WARNING;
if (!strcmp("level-1", argv[2]))
level = 1;
else if (!strcmp("level-2", argv[2]))
level = 2;
else
return CMD_WARNING;
if ((area->is_type & level) != level)
{
vty_out(vty, "Node is not a level-%d IS%s", level, VTY_NEWLINE);
return CMD_WARNING;
}
if (argv[3])
{
char *endp;
metric = strtoul(argv[3], &endp, 10);
if (argv[3][0] == '\0' || *endp != '\0')
return CMD_WARNING;
}
else
{
metric = 0xffffffff;
}
routemap = argv[4];
isis_redist_set(area, level, family, type, metric, routemap, 0);
return 0;
}
DEFUN(no_isis_redistribute,
no_isis_redistribute_cmd,
"no redistribute (ipv4|ipv6) " QUAGGA_REDIST_STR_ISISD
" (level-1|level-2)",
NO_STR
REDIST_STR
"Redistribute IPv4 routes\n"
"Redistribute IPv6 routes\n"
QUAGGA_REDIST_HELP_STR_ISISD
"Redistribute into level-1\n"
"Redistribute into level-2\n")
{
struct isis_area *area = vty->index;
int type;
int level;
int family;
int afi;
if (argc < 3)
return CMD_WARNING;
family = str2family(argv[0]);
if (family < 0)
return CMD_WARNING;
afi = family2afi(family);
if (!afi)
return CMD_WARNING;
type = proto_redistnum(afi, argv[1]);
if (type < 0 || type == ZEBRA_ROUTE_ISIS)
return CMD_WARNING;
if (!strcmp("level-1", argv[2]))
level = 1;
else if (!strcmp("level-2", argv[2]))
level = 2;
else
return CMD_WARNING;
isis_redist_unset(area, level, family, type);
return 0;
}
DEFUN(isis_default_originate,
isis_default_originate_cmd,
"default-information originate (ipv4|ipv6) (level-1|level-2) "
"{always|metric <0-16777215>|route-map WORD}",
"Control distribution of default information\n"
"Distribute a default route\n"
"Distribute default route for IPv4\n"
"Distribute default route for IPv6\n"
"Distribute default route into level-1\n"
"Distribute default route into level-2\n"
"Always advertise default route\n"
"Metric for default route\n"
"ISIS default metric\n"
"Route map reference\n"
"Pointer to route-map entries\n")
{
struct isis_area *area = vty->index;
int family;
int originate_type;
int level;
unsigned long metric;
const char *routemap;
if (argc < 5)
return CMD_WARNING;
family = str2family(argv[0]);
if (family < 0)
return CMD_WARNING;
if (!strcmp("level-1", argv[1]))
level = 1;
else if (!strcmp("level-2", argv[1]))
level = 2;
else
return CMD_WARNING;
if ((area->is_type & level) != level)
{
vty_out(vty, "Node is not a level-%d IS%s", level, VTY_NEWLINE);
return CMD_WARNING;
}
if (argv[2] && *argv[2] != '\0')
originate_type = DEFAULT_ORIGINATE_ALWAYS;
else
originate_type = DEFAULT_ORIGINATE;
if (family == AF_INET6 && originate_type != DEFAULT_ORIGINATE_ALWAYS)
{
vty_out(vty, "Zebra doesn't implement default-originate for IPv6 yet%s", VTY_NEWLINE);
vty_out(vty, "so use with care or use default-originate always.%s", VTY_NEWLINE);
}
if (argv[3])
{
char *endp;
metric = strtoul(argv[3], &endp, 10);
if (argv[3][0] == '\0' || *endp != '\0')
return CMD_WARNING;
}
else
{
metric = 0xffffffff;
}
routemap = argv[4];
isis_redist_set(area, level, family, DEFAULT_ROUTE, metric, routemap, originate_type);
return 0;
}
DEFUN(no_isis_default_originate,
no_isis_default_originate_cmd,
"no default-information originate (ipv4|ipv6) (level-1|level-2)",
NO_STR
"Control distribution of default information\n"
"Distribute a default route\n"
"Distribute default route for IPv4\n"
"Distribute default route for IPv6\n"
"Distribute default route into level-1\n"
"Distribute default route into level-2\n")
{
struct isis_area *area = vty->index;
int family;
int level;
if (argc < 2)
return CMD_WARNING;
family = str2family(argv[0]);
if (family < 0)
return CMD_WARNING;
if (!strcmp("level-1", argv[1]))
level = 1;
else if (!strcmp("level-2", argv[1]))
level = 2;
else
return CMD_WARNING;
isis_redist_unset(area, level, family, DEFAULT_ROUTE);
return 0;
}
int
isis_redist_config_write(struct vty *vty, struct isis_area *area,
int family)
{
int type;
int level;
int write = 0;
struct isis_redist *redist;
const char *family_str;
if (family == AF_INET)
family_str = "ipv4";
else if (family == AF_INET6)
family_str = "ipv6";
else
return 0;
for (type = 0; type < ZEBRA_ROUTE_MAX; type++)
{
if (type == ZEBRA_ROUTE_ISIS)
continue;
for (level = 1; level <= ISIS_LEVELS; level++)
{
redist = get_redist_settings(area, family, type, level);
if (!redist->redist)
continue;
vty_out(vty, " redistribute %s %s level-%d",
family_str, zebra_route_string(type), level);
if (redist->metric != 0xffffffff)
vty_out(vty, " metric %u", redist->metric);
if (redist->map_name)
vty_out(vty, " route-map %s", redist->map_name);
vty_out(vty, "%s", VTY_NEWLINE);
write++;
}
}
for (level = 1; level <= ISIS_LEVELS; level++)
{
redist = get_redist_settings(area, family, DEFAULT_ROUTE, level);
if (!redist->redist)
continue;
vty_out(vty, " default-information originate %s level-%d",
family_str, level);
if (redist->redist == DEFAULT_ORIGINATE_ALWAYS)
vty_out(vty, " always");
if (redist->metric != 0xffffffff)
vty_out(vty, " metric %u", redist->metric);
if (redist->map_name)
vty_out(vty, " route-map %s", redist->map_name);
vty_out(vty, "%s", VTY_NEWLINE);
write++;
}
return write;
}
void
isis_redist_init(void)
{
install_element(ISIS_NODE, &isis_redistribute_cmd);
install_element(ISIS_NODE, &no_isis_redistribute_cmd);
install_element(ISIS_NODE, &isis_default_originate_cmd);
install_element(ISIS_NODE, &no_isis_default_originate_cmd);
}

58
isisd/isis_redist.h Normal file
View File

@ -0,0 +1,58 @@
/*
* IS-IS Rout(e)ing protocol - isis_redist.h
*
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef ISIS_REDIST_H
#define ISIS_REDIST_H
#define REDIST_PROTOCOL_COUNT 2
#define DEFAULT_ROUTE ZEBRA_ROUTE_MAX
#define DEFAULT_ORIGINATE 1
#define DEFAULT_ORIGINATE_ALWAYS 2
struct isis_ext_info
{
int origin;
uint32_t metric;
u_char distance;
};
struct isis_redist
{
int redist;
uint32_t metric;
char *map_name;
struct route_map *map;
};
struct isis_area;
struct prefix;
struct route_table *get_ext_reach(struct isis_area *area,
int family, int level);
void isis_redist_add(int type, struct prefix *p,
u_char distance, uint32_t metric);
void isis_redist_delete(int type, struct prefix *p);
int isis_redist_config_write(struct vty *vty, struct isis_area *area,
int family);
void isis_redist_init(void);
void isis_redist_area_finish(struct isis_area *area);
#endif

557
isisd/isis_routemap.c
View File

@ -1,13 +1,10 @@
/*
* IS-IS Rout(e)ing protocol - isis_routemap.c
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
* IS-IS Rout(e)ing protocol - isis_routemap.c
*
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
@ -20,18 +17,22 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <zebra.h>
#include "thread.h"
#include "command.h"
#include "filter.h"
#include "hash.h"
#include "if.h"
#include "linklist.h"
#include "vty.h"
#include "log.h"
#include "memory.h"
#include "prefix.h"
#include "hash.h"
#include "if.h"
#include "table.h"
#include "plist.h"
#include "routemap.h"
#include "table.h"
#include "thread.h"
#include "vty.h"
#include "isis_constants.h"
#include "isis_common.h"
@ -47,60 +48,518 @@
#include "isis_spf.h"
#include "isis_route.h"
#include "isis_zebra.h"
#include "isis_routemap.h"
extern struct isis *isis;
/*
* Prototypes.
*/
void isis_route_map_upd(const char *);
void isis_route_map_event(route_map_event_t, const char *);
void isis_route_map_init(void);
void
isis_route_map_upd (const char *name)
static route_map_result_t
route_match_ip_address(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
int i = 0;
struct access_list *alist;
if (!isis)
return;
if (type != RMAP_ISIS)
return RMAP_NOMATCH;
for (i = 0; i <= ZEBRA_ROUTE_MAX; i++)
alist = access_list_lookup(AFI_IP, (char*)rule);
if (access_list_apply(alist, prefix) != FILTER_DENY)
return RMAP_MATCH;
return RMAP_NOMATCH;
}
static void *
route_match_ip_address_compile(const char *arg)
{
return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}
static void
route_match_ip_address_free(void *rule)
{
XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}
static struct route_map_rule_cmd route_match_ip_address_cmd =
{
"ip address",
route_match_ip_address,
route_match_ip_address_compile,
route_match_ip_address_free
};
/* ------------------------------------------------------------*/
static route_map_result_t
route_match_ip_address_prefix_list(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
struct prefix_list *plist;
if (type != RMAP_ISIS)
return RMAP_NOMATCH;
plist = prefix_list_lookup(AFI_IP, (char*)rule);
if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
return RMAP_MATCH;
return RMAP_NOMATCH;
}
static void *
route_match_ip_address_prefix_list_compile(const char *arg)
{
return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
}
static void
route_match_ip_address_prefix_list_free (void *rule)
{
XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
}
struct route_map_rule_cmd route_match_ip_address_prefix_list_cmd =
{
"ip address prefix-list",
route_match_ip_address_prefix_list,
route_match_ip_address_prefix_list_compile,
route_match_ip_address_prefix_list_free
};
/* ------------------------------------------------------------*/
static route_map_result_t
route_match_ipv6_address(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
struct access_list *alist;
if (type != RMAP_ISIS)
return RMAP_NOMATCH;
alist = access_list_lookup(AFI_IP6, (char*)rule);
if (access_list_apply(alist, prefix) != FILTER_DENY)
return RMAP_MATCH;
return RMAP_NOMATCH;
}
static void *
route_match_ipv6_address_compile(const char *arg)
{
return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}
static void
route_match_ipv6_address_free(void *rule)
{
XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}
static struct route_map_rule_cmd route_match_ipv6_address_cmd =
{
"ipv6 address",
route_match_ipv6_address,
route_match_ipv6_address_compile,
route_match_ipv6_address_free
};
/* ------------------------------------------------------------*/
static route_map_result_t
route_match_ipv6_address_prefix_list(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
struct prefix_list *plist;
if (type != RMAP_ISIS)
return RMAP_NOMATCH;
plist = prefix_list_lookup(AFI_IP6, (char*)rule);
if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
return RMAP_MATCH;
return RMAP_NOMATCH;
}
static void *
route_match_ipv6_address_prefix_list_compile(const char *arg)
{
return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
}
static void
route_match_ipv6_address_prefix_list_free (void *rule)
{
XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
}
struct route_map_rule_cmd route_match_ipv6_address_prefix_list_cmd =
{
"ipv6 address prefix-list",
route_match_ipv6_address_prefix_list,
route_match_ipv6_address_prefix_list_compile,
route_match_ipv6_address_prefix_list_free
};
/* ------------------------------------------------------------*/
static route_map_result_t
route_set_metric(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
uint32_t *metric;
struct isis_ext_info *info;
if (type == RMAP_ISIS)
{
if (isis->rmap[i].name)
isis->rmap[i].map = route_map_lookup_by_name (isis->rmap[i].name);
else
isis->rmap[i].map = NULL;
metric = rule;
info = object;
info->metric = *metric;
}
/* FIXME: do the address family sub-mode AF_INET6 here ? */
return RMAP_OKAY;
}
void
isis_route_map_event (route_map_event_t event, const char *name)
static void *
route_set_metric_compile(const char *arg)
{
int type;
unsigned long metric;
char *endp;
uint32_t *ret;
if (!isis)
return;
metric = strtoul(arg, &endp, 10);
if (arg[0] == '\0' || *endp != '\0' || metric > MAX_WIDE_PATH_METRIC)
return NULL;
for (type = 0; type <= ZEBRA_ROUTE_MAX; type++)
ret = XCALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(ret));
*ret = metric;
return ret;
}
static void
route_set_metric_free(void *rule)
{
XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}
static struct route_map_rule_cmd route_set_metric_cmd =
{
"metric",
route_set_metric,
route_set_metric_compile,
route_set_metric_free
};
/* ------------------------------------------------------------*/
static int
isis_route_match_add(struct vty *vty, struct route_map_index *index,
const char *command, const char *arg)
{
int ret;
ret = route_map_add_match (index, command, arg);
if (ret)
{
if (isis->rmap[type].name && isis->rmap[type].map &&
!strcmp (isis->rmap[type].name, name))
{
isis_distribute_list_update (type);
}
switch (ret)
{
case RMAP_RULE_MISSING:
vty_out (vty, "%% Can't find rule.%s", VTY_NEWLINE);
return CMD_WARNING;
case RMAP_COMPILE_ERROR:
vty_out (vty, "%% Argument is malformed.%s", VTY_NEWLINE);
return CMD_WARNING;
}
}
return CMD_SUCCESS;
}
static int
isis_route_match_delete(struct vty *vty, struct route_map_index *index,
const char *command, const char *arg)
{
int ret;
ret = route_map_delete_match (index, command, arg);
if (ret)
{
switch (ret)
{
case RMAP_RULE_MISSING:
vty_out (vty, "%% Can't find rule.%s", VTY_NEWLINE);
return CMD_WARNING;
case RMAP_COMPILE_ERROR:
vty_out (vty, "%% Argument is malformed.%s", VTY_NEWLINE);
return CMD_WARNING;
}
}
return CMD_SUCCESS;
}
static int
isis_route_set_add(struct vty *vty, struct route_map_index *index,
const char *command, const char *arg)
{
int ret;
ret = route_map_add_set(index, command, arg);
if (ret)
{
switch (ret)
{
case RMAP_RULE_MISSING:
vty_out (vty, "%% Can't find rule.%s", VTY_NEWLINE);
return CMD_WARNING;
case RMAP_COMPILE_ERROR:
vty_out (vty, "%% Argument is malformed.%s", VTY_NEWLINE);
return CMD_WARNING;
}
}
return CMD_SUCCESS;
}
static int
isis_route_set_delete (struct vty *vty, struct route_map_index *index,
const char *command, const char *arg)
{
int ret;
ret = route_map_delete_set (index, command, arg);
if (ret)
{
switch (ret)
{
case RMAP_RULE_MISSING:
vty_out (vty, "%% Can't find rule.%s", VTY_NEWLINE);
return CMD_WARNING;
case RMAP_COMPILE_ERROR:
vty_out (vty, "%% Argument is malformed.%s", VTY_NEWLINE);
return CMD_WARNING;
}
}
return CMD_SUCCESS;
}
/* ------------------------------------------------------------*/
DEFUN(match_ip_address,
match_ip_address_cmd,
"match ip address (<1-199>|<1300-2699>|WORD)",
MATCH_STR
IP_STR
"Match address of route\n"
"IP access-list number\n"
"IP access-list number (expanded range)\n"
"IP Access-list name\n")
{
return isis_route_match_add(vty, vty->index, "ip address", argv[0]);
}
DEFUN(no_match_ip_address,
no_match_ip_address_val_cmd,
"no match ip address (<1-199>|<1300-2699>|WORD)",
NO_STR
MATCH_STR
IP_STR
"Match address of route\n"
"IP access-list number\n"
"IP access-list number (expanded range)\n"
"IP Access-list name\n")
{
if (argc == 0)
return isis_route_match_delete(vty, vty->index, "ip address", NULL);
return isis_route_match_delete(vty, vty->index, "ip address", argv[0]);
}
ALIAS(no_match_ip_address,
no_match_ip_address_cmd,
"no match ip address",
NO_STR
MATCH_STR
IP_STR
"Match address of route\n"
);
/* ------------------------------------------------------------*/
DEFUN(match_ip_address_prefix_list,
match_ip_address_prefix_list_cmd,
"match ip address prefix-list WORD",
MATCH_STR
IP_STR
"Match address of route\n"
"Match entries of prefix-lists\n"
"IP prefix-list name\n")
{
return isis_route_match_add(vty, vty->index, "ip address prefix-list", argv[0]);
}
DEFUN(no_match_ip_address_prefix_list,
no_match_ip_address_prefix_list_cmd,
"no match ip address prefix-list",
NO_STR
MATCH_STR
IP_STR
"Match address of route\n"
"Match entries of prefix-lists\n")
{
if (argc == 0)
return isis_route_match_delete (vty, vty->index, "ip address prefix-list", NULL);
return isis_route_match_delete (vty, vty->index, "ip address prefix-list", argv[0]);
}
ALIAS(no_match_ip_address_prefix_list,
no_match_ip_address_prefix_list_val_cmd,
"no match ip address prefix-list WORD",
NO_STR
MATCH_STR
IP_STR
"Match address of route\n"
"Match entries of prefix-lists\n"
"IP prefix-list name\n"
);
/* ------------------------------------------------------------*/
DEFUN(match_ipv6_address,
match_ipv6_address_cmd,
"match ipv6 address WORD",
MATCH_STR
IPV6_STR
"Match IPv6 address of route\n"
"IPv6 access-list name\n")
{
return isis_route_match_add(vty, vty->index, "ipv6 address", argv[0]);
}
DEFUN(no_match_ipv6_address,
no_match_ipv6_address_val_cmd,
"no match ipv6 address WORD",
NO_STR
MATCH_STR
IPV6_STR
"Match IPv6 address of route\n"
"IPv6 access-list name\n")
{
if (argc == 0)
return isis_route_match_delete(vty, vty->index, "ipv6 address", NULL);
return isis_route_match_delete(vty, vty->index, "ipv6 address", argv[0]);
}
ALIAS(no_match_ipv6_address,
no_match_ipv6_address_cmd,
"no match ipv6 address",
NO_STR
MATCH_STR
IPV6_STR
"Match IPv6 address of route\n"
);
/* ------------------------------------------------------------*/
DEFUN(match_ipv6_address_prefix_list,
match_ipv6_address_prefix_list_cmd,
"match ipv6 address prefix-list WORD",
MATCH_STR
IPV6_STR
"Match address of route\n"
"Match entries of prefix-lists\n"
"IP prefix-list name\n")
{
return isis_route_match_add(vty, vty->index, "ipv6 address prefix-list", argv[0]);
}
DEFUN(no_match_ipv6_address_prefix_list,
no_match_ipv6_address_prefix_list_cmd,
"no match ipv6 address prefix-list",
NO_STR
MATCH_STR
IPV6_STR
"Match address of route\n"
"Match entries of prefix-lists\n")
{
if (argc == 0)
return isis_route_match_delete (vty, vty->index, "ipv6 address prefix-list", NULL);
return isis_route_match_delete (vty, vty->index, "ipv6 address prefix-list", argv[0]);
}
ALIAS(no_match_ipv6_address_prefix_list,
no_match_ipv6_address_prefix_list_val_cmd,
"no match ipv6 address prefix-list WORD",
NO_STR
MATCH_STR
IPV6_STR
"Match address of route\n"
"Match entries of prefix-lists\n"
"IP prefix-list name\n"
);
/* ------------------------------------------------------------*/
/* set metric already exists e.g. in the ospf routemap. vtysh doesn't cope well with different
* commands at the same node, therefore add set metric with the same 32-bit range as ospf and
* verify that the input is a valid isis metric */
DEFUN(set_metric,
set_metric_cmd,
"set metric <0-4294967295>",
SET_STR
"Metric vale for destination routing protocol\n"
"Metric value\n")
{
return isis_route_set_add(vty, vty->index, "metric", argv[0]);
}
DEFUN(no_set_metric,
no_set_metric_val_cmd,
"no set metric <0-4294967295>",
NO_STR
SET_STR
"Metric value for destination routing protocol\n"
"Metric value\n")
{
if (argc == 0)
return isis_route_set_delete(vty, vty->index, "metric", NULL);
return isis_route_set_delete(vty, vty->index, "metric", argv[0]);
}
ALIAS(no_set_metric,
no_set_metric_cmd,
"no set metric",
NO_STR
SET_STR
"Metric vale for destination routing protocol\n"
);
void
isis_route_map_init (void)
isis_route_map_init(void)
{
route_map_init ();
route_map_init_vty ();
route_map_init();
route_map_init_vty();
route_map_add_hook (isis_route_map_upd);
route_map_delete_hook (isis_route_map_upd);
route_map_event_hook (isis_route_map_event);
route_map_install_match(&route_match_ip_address_cmd);
install_element(RMAP_NODE, &match_ip_address_cmd);
install_element(RMAP_NODE, &no_match_ip_address_val_cmd);
install_element(RMAP_NODE, &no_match_ip_address_cmd);
route_map_install_match(&route_match_ip_address_prefix_list_cmd);
install_element(RMAP_NODE, &match_ip_address_prefix_list_cmd);
install_element(RMAP_NODE, &no_match_ip_address_prefix_list_val_cmd);
install_element(RMAP_NODE, &no_match_ip_address_prefix_list_cmd);
route_map_install_match(&route_match_ipv6_address_cmd);
install_element(RMAP_NODE, &match_ipv6_address_cmd);
install_element(RMAP_NODE, &no_match_ipv6_address_val_cmd);
install_element(RMAP_NODE, &no_match_ipv6_address_cmd);
route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
install_element(RMAP_NODE, &match_ipv6_address_prefix_list_cmd);
install_element(RMAP_NODE, &no_match_ipv6_address_prefix_list_val_cmd);
install_element(RMAP_NODE, &no_match_ipv6_address_prefix_list_cmd);
route_map_install_set(&route_set_metric_cmd);
install_element(RMAP_NODE, &set_metric_cmd);
install_element(RMAP_NODE, &no_set_metric_val_cmd);
install_element(RMAP_NODE, &no_set_metric_cmd);
}

25
isisd/isis_routemap.h Normal file
View File

@ -0,0 +1,25 @@
/*
* IS-IS Rout(e)ing protocol - isis_routemap.h
*
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef ISIS_ROUTEMAP_H
#define ISIS_ROUTEMAP_H
void isis_route_map_init(void);
#endif

21
isisd/isis_tlv.c
View File

@ -992,8 +992,8 @@ tlv_add_lsp_entries (struct list *lsps, struct stream *stream)
return add_tlv (LSP_ENTRIES, pos - value, value, stream);
}
int
tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream)
static int
tlv_add_ipv4_reachs (u_char tag, struct list *ipv4_reachs, struct stream *stream)
{
struct listnode *node;
struct ipv4_reachability *reach;
@ -1006,7 +1006,7 @@ tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream)
if (pos - value + IPV4_REACH_LEN > 255)
{
retval =
add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream);
add_tlv (tag, pos - value, value, stream);
if (retval != ISIS_OK)
return retval;
pos = value;
@ -1025,9 +1025,22 @@ tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream)
pos += IPV4_MAX_BYTELEN;
}
return add_tlv (IPV4_INT_REACHABILITY, pos - value, value, stream);
return add_tlv (tag, pos - value, value, stream);
}
int
tlv_add_ipv4_int_reachs (struct list *ipv4_reachs, struct stream *stream)
{
return tlv_add_ipv4_reachs(IPV4_INT_REACHABILITY, ipv4_reachs, stream);
}
int
tlv_add_ipv4_ext_reachs (struct list *ipv4_reachs, struct stream *stream)
{
return tlv_add_ipv4_reachs(IPV4_EXT_REACHABILITY, ipv4_reachs, stream);
}
int
tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream)
{

13
isisd/isis_tlv.h
View File

@ -230,11 +230,13 @@ struct ipv6_reachability
/* bits in control_info */
#define CTRL_INFO_DIRECTION 0x80
#define DIRECTION_UP 0
#define DIRECTION_DOWN 1
#define DIRECTION_UP 0x00
#define DIRECTION_DOWN 0x80
#define CTRL_INFO_DISTRIBUTION 0x40
#define DISTRIBUTION_INTERNAL 0
#define DISTRIBUTION_EXTERNAL 1
#define DISTRIBUTION_INTERNAL 0x00
#define DISTRIBUTION_EXTERNAL 0x40
#define CTRL_INFO_SUBTLVS 0x20
#endif /* HAVE_IPV6 */
@ -313,7 +315,8 @@ int tlv_add_in_addr (struct in_addr *, struct stream *stream, u_char tag);
int tlv_add_dynamic_hostname (struct hostname *hostname,
struct stream *stream);
int tlv_add_lsp_entries (struct list *lsps, struct stream *stream);
int tlv_add_ipv4_reachs (struct list *ipv4_reachs, struct stream *stream);
int tlv_add_ipv4_int_reachs (struct list *ipv4_reachs, struct stream *stream);
int tlv_add_ipv4_ext_reachs (struct list *ipv4_reachs, struct stream *stream);
int tlv_add_te_ipv4_reachs (struct list *te_ipv4_reachs, struct stream *stream);
#ifdef HAVE_IPV6
int tlv_add_ipv6_addrs (struct list *ipv6_addrs, struct stream *stream);

101
isisd/isis_zebra.c
View File

@ -4,6 +4,7 @@
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
@ -32,6 +33,7 @@
#include "zclient.h"
#include "stream.h"
#include "linklist.h"
#include "nexthop.h"
#include "vrf.h"
#include "isisd/dict.h"
@ -531,8 +533,10 @@ isis_zebra_read_ipv4 (int command, struct zclient *zclient,
struct stream *stream;
struct zapi_ipv4 api;
struct prefix_ipv4 p;
struct prefix *p_generic = (struct prefix*)&p;
stream = zclient->ibuf;
memset(&api, 0, sizeof(api));
memset (&p, 0, sizeof (struct prefix_ipv4));
api.type = stream_getc (stream);
@ -558,32 +562,80 @@ isis_zebra_read_ipv4 (int command, struct zclient *zclient,
api.distance = stream_getc (stream);
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (stream);
else
api.metric = 0;
/*
* Avoid advertising a false default reachability. (A default
* route installed by IS-IS gets redistributed from zebra back
* into IS-IS causing us to start advertising default reachabity
* without this check)
*/
if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS)
command = ZEBRA_IPV4_ROUTE_DELETE;
if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD)
{
if (isis->debugs & DEBUG_ZEBRA)
zlog_debug ("IPv4 Route add from Z");
}
isis_redist_add(api.type, p_generic, api.distance, api.metric);
else
isis_redist_delete(api.type, p_generic);
return 0;
}
#ifdef HAVE_IPV6
static int
isis_zebra_read_ipv6 (int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct stream *stream;
struct zapi_ipv6 api;
struct prefix_ipv6 p;
struct prefix *p_generic = (struct prefix*)&p;
struct in6_addr nexthop;
unsigned long ifindex __attribute__((unused));
stream = zclient->ibuf;
memset(&api, 0, sizeof(api));
memset(&p, 0, sizeof(struct prefix_ipv6));
memset(&nexthop, 0, sizeof(nexthop));
ifindex = 0;
api.type = stream_getc(stream);
api.flags = stream_getc(stream);
api.message = stream_getc(stream);
p.family = AF_INET6;
p.prefixlen = stream_getc(stream);
stream_get(&p.prefix, stream, PSIZE(p.prefixlen));
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc(stream); /* this is always 1 */
stream_get(&nexthop, stream, sizeof(nexthop));
}
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc(stream);
ifindex = stream_getl(stream);
}
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc(stream);
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl(stream);
/*
* Avoid advertising a false default reachability. (A default
* route installed by IS-IS gets redistributed from zebra back
* into IS-IS causing us to start advertising default reachabity
* without this check)
*/
if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS)
command = ZEBRA_IPV6_ROUTE_DELETE;
if (command == ZEBRA_IPV6_ROUTE_ADD)
isis_redist_add(api.type, p_generic, api.distance, api.metric);
else
isis_redist_delete(api.type, p_generic);
return 0;
}
#endif
#define ISIS_TYPE_IS_REDISTRIBUTED(T) \
T == ZEBRA_ROUTE_MAX ? \
vrf_bitmap_check (zclient->default_information, VRF_DEFAULT) : \
(vrf_bitmap_check (zclient->redist[AFI_IP][type], VRF_DEFAULT) || \
vrf_bitmap_check (zclient->redist[AFI_IP6][type], VRF_DEFAULT)
int
isis_distribute_list_update (int routetype)
@ -591,14 +643,23 @@ isis_distribute_list_update (int routetype)
return 0;
}
#if 0 /* Not yet. */
static int
isis_redistribute_default_set (int routetype, int metric_type,
int metric_value)
void
isis_zebra_redistribute_set(int type)
{
return 0;
if (type == DEFAULT_ROUTE)
zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_ADD, zclient, VRF_DEFAULT);
else
zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, type, 0, VRF_DEFAULT);
}
void
isis_zebra_redistribute_unset(int type)
{
if (type == DEFAULT_ROUTE)
zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, zclient, VRF_DEFAULT);
else
zclient_redistribute(ZEBRA_REDISTRIBUTE_DELETE, zclient, AFI_IP, type, 0, VRF_DEFAULT);
}
#endif /* 0 */
static void
isis_zebra_connected (struct zclient *zclient)

2
isisd/isis_zebra.h
View File

@ -28,5 +28,7 @@ void isis_zebra_init(struct thread_master *);
void isis_zebra_route_update (struct prefix *prefix,
struct isis_route_info *route_info);
int isis_distribute_list_update (int routetype);
void isis_zebra_redistribute_set(int type);
void isis_zebra_redistribute_unset(int type);
#endif /* _ZEBRA_ISIS_ZEBRA_H */

4
isisd/isisd.c
View File

@ -280,6 +280,8 @@ isis_area_destroy (struct vty *vty, const char *area_tag)
}
#endif /* HAVE_IPV6 */
isis_redist_area_finish(area);
for (ALL_LIST_ELEMENTS (area->area_addrs, node, nnode, addr))
{
list_delete_node (area->area_addrs, node);
@ -3050,6 +3052,8 @@ isis_config_write (struct vty *vty)
vty_out (vty, " is-type level-2-only%s", VTY_NEWLINE);
write++;
}
write += isis_redist_config_write(vty, area, AF_INET);
write += isis_redist_config_write(vty, area, AF_INET6);
/* ISIS - Lsp generation interval */
if (area->lsp_gen_interval[0] == area->lsp_gen_interval[1])
{

36
isisd/isisd.h
View File

@ -27,16 +27,12 @@
#define ISISD_VERSION "0.0.7"
#include "isisd/isis_redist.h"
/* uncomment if you are a developer in bug hunt */
/* #define EXTREME_DEBUG */
/* #define EXTREME_TLV_DEBUG */
struct rmap
{
char *name;
struct route_map *map;
};
struct isis
{
u_long process_id;
@ -55,30 +51,7 @@ struct isis
time_t uptime; /* when did we start */
struct thread *t_dync_clean; /* dynamic hostname cache cleanup thread */
/* Redistributed external information. */
struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
/* Redistribute metric info. */
struct
{
int type; /* Internal or External */
int value; /* metric value */
} dmetric[ZEBRA_ROUTE_MAX + 1];
struct
{
char *name;
struct route_map *map;
} rmap[ZEBRA_ROUTE_MAX + 1];
#ifdef HAVE_IPV6
struct
{
struct
{
char *name;
struct route_map *map;
} rmap[ZEBRA_ROUTE_MAX + 1];
} inet6_afmode;
#endif
struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
};
extern struct isis *isis;
@ -147,6 +120,9 @@ struct isis_area
#endif /* HAVE_IPV6 */
/* Counters */
u_int32_t circuit_state_changes;
struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
[ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
#ifdef TOPOLOGY_GENERATE
struct list *topology;

11
lib/prefix.c
View File

@ -187,6 +187,17 @@ prefix6_bit (const struct in6_addr *prefix, const u_char prefixlen)
return prefix_bit((const u_char *) &prefix->s6_addr, prefixlen);
}
int
str2family(const char *string)
{
if (!strcmp("ipv4", string))
return AF_INET;
else if (!strcmp("ipv6", string))
return AF_INET6;
else
return -1;
}
/* Address Famiy Identifier to Address Family converter. */
int
afi2family (afi_t afi)

1
lib/prefix.h
View File

@ -167,6 +167,7 @@ union prefix46constptr
#endif /*s6_addr32*/
/* Prototypes. */
extern int str2family(const char *);
extern int afi2family (afi_t);
extern afi_t family2afi (int);

3
lib/routemap.h
View File

@ -48,7 +48,8 @@ typedef enum
RMAP_OSPF,
RMAP_OSPF6,
RMAP_BGP,
RMAP_ZEBRA
RMAP_ZEBRA,
RMAP_ISIS,
} route_map_object_t;
typedef enum