babeld: Initial import, for Babel routing protocol.
* Initial import of the Babel routing protocol, ported to Quagga.
* LICENCE: Update the original LICENCE file to include all known potentially
applicable copyright claims. Ask that any future contributors to babeld/
grant MIT/X11 licence to their work.
* *.{c,h}: Add GPL headers, in according with the SFLC guidance on
dealing with potentially mixed GPL/other licensed work, at:
https://www.softwarefreedom.org/resources/2007/gpl-non-gpl-collaboration.html
diff --git a/babeld/babeld.c b/babeld/babeld.c
new file mode 100644
index 0000000..18b4e34
--- /dev/null
+++ b/babeld/babeld.c
@@ -0,0 +1,766 @@
+/*
+ * This file is free software: you may copy, redistribute 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 file 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, see <http://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+
+Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <zebra.h>
+#include "command.h"
+#include "prefix.h"
+#include "memory.h"
+#include "memtypes.h"
+#include "table.h"
+#include "distribute.h"
+#include "prefix.h"
+#include "filter.h"
+#include "plist.h"
+
+#include "babel_main.h"
+#include "babeld.h"
+#include "util.h"
+#include "net.h"
+#include "kernel.h"
+#include "babel_interface.h"
+#include "neighbour.h"
+#include "route.h"
+#include "message.h"
+#include "resend.h"
+#include "babel_filter.h"
+
+
+static int babel_init_routing_process(struct thread *thread);
+static void babel_get_myid(void);
+static void babel_initial_noise(void);
+static int babel_read_protocol (struct thread *thread);
+static int babel_main_loop(struct thread *thread);
+static void babel_set_timer(struct timeval *timeout);
+static void babel_fill_with_next_timeout(struct timeval *tv);
+
+
+/* Informations relative to the babel running daemon. */
+static struct babel *babel_routing_process = NULL;
+static unsigned char *receive_buffer = NULL;
+static int receive_buffer_size = 0;
+
+/* timeouts */
+struct timeval check_neighbours_timeout;
+static time_t expiry_time;
+static time_t source_expiry_time;
+
+/* Babel node structure. */
+static struct cmd_node cmd_babel_node =
+{
+ .node = BABEL_NODE,
+ .prompt = "%s(config-router)# ",
+ .vtysh = 1,
+};
+
+/* print current babel configuration on vty */
+static int
+babel_config_write (struct vty *vty)
+{
+ return 0;
+}
+
+
+static int
+babel_create_routing_process (void)
+{
+ assert (babel_routing_process == NULL);
+
+ /* Allocaste Babel instance. */
+ babel_routing_process = XCALLOC (MTYPE_BABEL, sizeof (struct babel));
+
+ /* Initialize timeouts */
+ gettime(&babel_now);
+ expiry_time = babel_now.tv_sec + roughly(30);
+ source_expiry_time = babel_now.tv_sec + roughly(300);
+
+ /* Make socket for Babel protocol. */
+ protocol_socket = babel_socket(protocol_port);
+ if (protocol_socket < 0) {
+ zlog_err("Couldn't create link local socket: %s", safe_strerror(errno));
+ goto fail;
+ }
+
+ /* Threads. */
+ babel_routing_process->t_read =
+ thread_add_read(master, &babel_read_protocol, NULL, protocol_socket);
+ /* wait a little: zebra will announce interfaces, addresses, routes... */
+ babel_routing_process->t_update =
+ thread_add_timer_msec(master, &babel_init_routing_process, NULL, 200L);
+ return 0;
+
+fail:
+ XFREE(MTYPE_BABEL, babel_routing_process);
+ babel_routing_process = NULL;
+ return -1;
+}
+
+/* thread reading entries form others babel daemons */
+static int
+babel_read_protocol (struct thread *thread)
+{
+ int rc;
+ struct interface *ifp = NULL;
+ struct sockaddr_in6 sin6;
+ struct listnode *linklist_node = NULL;
+
+ assert(babel_routing_process != NULL);
+ assert(protocol_socket >= 0);
+
+ rc = babel_recv(protocol_socket,
+ receive_buffer, receive_buffer_size,
+ (struct sockaddr*)&sin6, sizeof(sin6));
+ if(rc < 0) {
+ if(errno != EAGAIN && errno != EINTR) {
+ zlog_err("recv: %s", safe_strerror(errno));
+ }
+ } else {
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ if(!if_up(ifp))
+ continue;
+ if(ifp->ifindex == sin6.sin6_scope_id) {
+ parse_packet((unsigned char*)&sin6.sin6_addr, ifp,
+ receive_buffer, rc);
+ break;
+ }
+ }
+ }
+
+ /* re-add thread */
+ babel_routing_process->t_read =
+ thread_add_read(master, &babel_read_protocol, NULL, protocol_socket);
+ return 0;
+}
+
+/* Zebra will give some information, especially about interfaces. This function
+ must be call with a litte timeout wich may give zebra the time to do his job,
+ making these inits have sense. */
+static int
+babel_init_routing_process(struct thread *thread)
+{
+ babel_get_myid();
+ debugf(BABEL_DEBUG_COMMON, "My ID is : %s.", format_eui64(myid));
+ babel_initial_noise();
+ babel_main_loop(thread);/* this function self-add to the t_update thread */
+ return 0;
+}
+
+/* fill "myid" with an unique id (only if myid != {0}). */
+static void
+babel_get_myid(void)
+{
+ struct interface *ifp = NULL;
+ struct listnode *linklist_node = NULL;
+ int rc;
+ int i;
+
+ /* if we already have an id (from state file), we return. */
+ if (memcmp(myid, zeroes, 8) != 0) {
+ return;
+ }
+
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ /* ifp->ifindex is not necessarily valid at this point */
+ int ifindex = if_nametoindex(ifp->name);
+ if(ifindex > 0) {
+ unsigned char eui[8];
+ rc = if_eui64(ifp->name, ifindex, eui);
+ if(rc < 0)
+ continue;
+ memcpy(myid, eui, 8);
+ return;
+ }
+ }
+
+ /* We failed to get a global EUI64 from the interfaces we were given.
+ Let's try to find an interface with a MAC address. */
+ for(i = 1; i < 256; i++) {
+ char buf[IF_NAMESIZE], *ifname;
+ unsigned char eui[8];
+ ifname = if_indextoname(i, buf);
+ if(ifname == NULL)
+ continue;
+ rc = if_eui64(ifname, i, eui);
+ if(rc < 0)
+ continue;
+ memcpy(myid, eui, 8);
+ return;
+ }
+
+ zlog_err("Warning: couldn't find router id -- using random value.");
+
+ rc = read_random_bytes(myid, 8);
+ if(rc < 0) {
+ zlog_err("read(random): %s (cannot assign an ID)",safe_strerror(errno));
+ exit(1);
+ }
+ /* Clear group and global bits */
+ myid[0] &= ~3;
+}
+
+/* Make some noise so that others notice us, and send retractions in
+ case we were restarted recently */
+static void
+babel_initial_noise(void)
+{
+ struct interface *ifp = NULL;
+ struct listnode *linklist_node = NULL;
+
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ if(!if_up(ifp))
+ continue;
+ /* Apply jitter before we send the first message. */
+ usleep(roughly(10000));
+ gettime(&babel_now);
+ send_hello(ifp);
+ send_wildcard_retraction(ifp);
+ }
+
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ if(!if_up(ifp))
+ continue;
+ usleep(roughly(10000));
+ gettime(&babel_now);
+ send_hello(ifp);
+ send_wildcard_retraction(ifp);
+ send_self_update(ifp);
+ send_request(ifp, NULL, 0);
+ flushupdates(ifp);
+ flushbuf(ifp);
+ }
+}
+
+/* Delete all the added babel routes, make babeld only speak to zebra. */
+static void
+babel_clean_routing_process()
+{
+ babel_uninstall_all_routes();
+ babel_interface_close_all();
+
+ /* cancel threads */
+ if (babel_routing_process->t_read != NULL) {
+ thread_cancel(babel_routing_process->t_read);
+ }
+ if (babel_routing_process->t_update != NULL) {
+ thread_cancel(babel_routing_process->t_update);
+ }
+
+ XFREE(MTYPE_BABEL, babel_routing_process);
+ babel_routing_process = NULL;
+}
+
+/* Function used with timeout. */
+static int
+babel_main_loop(struct thread *thread)
+{
+ struct timeval tv;
+ struct interface *ifp = NULL;
+ struct listnode *linklist_node = NULL;
+
+ while(1) {
+ gettime(&babel_now);
+
+ /* timeouts --------------------------------------------------------- */
+ /* get the next timeout */
+ babel_fill_with_next_timeout(&tv);
+ /* if there is no timeout, we must wait. */
+ if(timeval_compare(&tv, &babel_now) > 0) {
+ timeval_minus(&tv, &tv, &babel_now);
+ debugf(BABEL_DEBUG_TIMEOUT, "babel main loop : timeout: %ld msecs",
+ tv.tv_sec * 1000 + tv.tv_usec / 1000);
+ /* it happens often to have less than 1 ms, it's bad. */
+ timeval_add_msec(&tv, &tv, 300);
+ babel_set_timer(&tv);
+ return 0;
+ }
+
+ gettime(&babel_now);
+
+ /* update database -------------------------------------------------- */
+ if(timeval_compare(&check_neighbours_timeout, &babel_now) < 0) {
+ int msecs;
+ msecs = check_neighbours();
+ msecs = MAX(msecs, 10);
+ schedule_neighbours_check(msecs, 1);
+ }
+
+ if(babel_now.tv_sec >= expiry_time) {
+ expire_routes();
+ expire_resend();
+ expiry_time = babel_now.tv_sec + roughly(30);
+ }
+
+ if(babel_now.tv_sec >= source_expiry_time) {
+ expire_sources();
+ source_expiry_time = babel_now.tv_sec + roughly(300);
+ }
+
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ babel_interface_nfo *babel_ifp = NULL;
+ if(!if_up(ifp))
+ continue;
+ babel_ifp = babel_get_if_nfo(ifp);
+ if(timeval_compare(&babel_now, &babel_ifp->hello_timeout) >= 0)
+ send_hello(ifp);
+ if(timeval_compare(&babel_now, &babel_ifp->update_timeout) >= 0)
+ send_update(ifp, 0, NULL, 0);
+ if(timeval_compare(&babel_now,
+ &babel_ifp->update_flush_timeout) >= 0)
+ flushupdates(ifp);
+ }
+
+ if(resend_time.tv_sec != 0) {
+ if(timeval_compare(&babel_now, &resend_time) >= 0)
+ do_resend();
+ }
+
+ if(unicast_flush_timeout.tv_sec != 0) {
+ if(timeval_compare(&babel_now, &unicast_flush_timeout) >= 0)
+ flush_unicast(1);
+ }
+
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ babel_interface_nfo *babel_ifp = NULL;
+ if(!if_up(ifp))
+ continue;
+ babel_ifp = babel_get_if_nfo(ifp);
+ if(babel_ifp->flush_timeout.tv_sec != 0) {
+ if(timeval_compare(&babel_now, &babel_ifp->flush_timeout) >= 0)
+ flushbuf(ifp);
+ }
+ }
+ }
+
+ assert(0); /* this line should never be reach */
+}
+
+static void
+printIfMin(struct timeval *tv, int cmd, const char *tag, const char *ifname)
+{
+ static struct timeval curr_tv;
+ static char buffer[200];
+ static const char *curr_tag = NULL;
+
+ switch (cmd) {
+ case 0: /* reset timeval */
+ curr_tv = *tv;
+ if(ifname != NULL) {
+ snprintf(buffer, 200L, "interface: %s; %s", ifname, tag);
+ curr_tag = buffer;
+ } else {
+ curr_tag = tag;
+ }
+ break;
+ case 1: /* take the min */
+ if (tv->tv_sec == 0 && tv->tv_usec == 0) { /* if (tv == ∞) */
+ break;
+ }
+ if (tv->tv_sec < curr_tv.tv_sec ||(tv->tv_sec == curr_tv.tv_sec &&
+ tv->tv_usec < curr_tv.tv_usec)) {
+ curr_tv = *tv;
+ if(ifname != NULL) {
+ snprintf(buffer, 200L, "interface: %s; %s", ifname, tag);
+ curr_tag = buffer;
+ } else {
+ curr_tag = tag;
+ }
+ }
+ break;
+ case 2: /* print message */
+ debugf(BABEL_DEBUG_TIMEOUT, "next timeout due to: %s", curr_tag);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+babel_fill_with_next_timeout(struct timeval *tv)
+{
+#if (defined NO_DEBUG)
+#define printIfMin(a,b,c,d)
+#else
+#define printIfMin(a,b,c,d) \
+ if (UNLIKELY(debug & BABEL_DEBUG_TIMEOUT)) {printIfMin(a,b,c,d);}
+
+ struct interface *ifp = NULL;
+ struct listnode *linklist_node = NULL;
+
+ *tv = check_neighbours_timeout;
+ printIfMin(tv, 0, "check_neighbours_timeout", NULL);
+ timeval_min_sec(tv, expiry_time);
+ printIfMin(tv, 1, "expiry_time", NULL);
+ timeval_min_sec(tv, source_expiry_time);
+ printIfMin(tv, 1, "source_expiry_time", NULL);
+ timeval_min(tv, &resend_time);
+ printIfMin(tv, 1, "resend_time", NULL);
+ FOR_ALL_INTERFACES(ifp, linklist_node) {
+ babel_interface_nfo *babel_ifp = NULL;
+ if(!if_up(ifp))
+ continue;
+ babel_ifp = babel_get_if_nfo(ifp);
+ timeval_min(tv, &babel_ifp->flush_timeout);
+ printIfMin(tv, 1, "flush_timeout", ifp->name);
+ timeval_min(tv, &babel_ifp->hello_timeout);
+ printIfMin(tv, 1, "hello_timeout", ifp->name);
+ timeval_min(tv, &babel_ifp->update_timeout);
+ printIfMin(tv, 1, "update_timeout", ifp->name);
+ timeval_min(tv, &babel_ifp->update_flush_timeout);
+ printIfMin(tv, 1, "update_flush_timeout",ifp->name);
+ }
+ timeval_min(tv, &unicast_flush_timeout);
+ printIfMin(tv, 1, "unicast_flush_timeout", NULL);
+ printIfMin(tv, 2, NULL, NULL);
+#undef printIfMin
+#endif
+}
+
+/* set the t_update thread of the babel routing process to be launch in
+ 'timeout' (approximate at the milisecond) */
+static void
+babel_set_timer(struct timeval *timeout)
+{
+ long msecs = timeout->tv_sec * 1000 + timeout->tv_usec / 1000;
+ if (babel_routing_process->t_update != NULL) {
+ thread_cancel(babel_routing_process->t_update);
+ }
+ babel_routing_process->t_update =
+ thread_add_timer_msec(master, &babel_main_loop, NULL, msecs);
+}
+
+/* Schedule a neighbours check after roughly 3/2 times msecs have elapsed. */
+void
+schedule_neighbours_check(int msecs, int override)
+{
+ struct timeval timeout;
+
+ timeval_add_msec(&timeout, &babel_now, roughly(msecs * 3 / 2));
+ if(override)
+ check_neighbours_timeout = timeout;
+ else
+ timeval_min(&check_neighbours_timeout, &timeout);
+}
+
+int
+resize_receive_buffer(int size)
+{
+ if(size <= receive_buffer_size)
+ return 0;
+
+ if(receive_buffer == NULL) {
+ receive_buffer = malloc(size);
+ if(receive_buffer == NULL) {
+ zlog_err("malloc(receive_buffer): %s", safe_strerror(errno));
+ return -1;
+ }
+ receive_buffer_size = size;
+ } else {
+ unsigned char *new;
+ new = realloc(receive_buffer, size);
+ if(new == NULL) {
+ zlog_err("realloc(receive_buffer): %s", safe_strerror(errno));
+ return -1;
+ }
+ receive_buffer = new;
+ receive_buffer_size = size;
+ }
+ return 1;
+}
+
+static void
+babel_distribute_update (struct distribute *dist)
+{
+ struct interface *ifp;
+ babel_interface_nfo *babel_ifp;
+ struct access_list *alist;
+ struct prefix_list *plist;
+
+ if (! dist->ifname)
+ return;
+
+ ifp = if_lookup_by_name (dist->ifname);
+ if (ifp == NULL)
+ return;
+
+ babel_ifp = babel_get_if_nfo(ifp);
+
+ if (dist->list[DISTRIBUTE_IN]) {
+ alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]);
+ if (alist)
+ babel_ifp->list[BABEL_FILTER_IN] = alist;
+ else
+ babel_ifp->list[BABEL_FILTER_IN] = NULL;
+ } else {
+ babel_ifp->list[BABEL_FILTER_IN] = NULL;
+ }
+
+ if (dist->list[DISTRIBUTE_OUT]) {
+ alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]);
+ if (alist)
+ babel_ifp->list[BABEL_FILTER_OUT] = alist;
+ else
+ babel_ifp->list[BABEL_FILTER_OUT] = NULL;
+ } else {
+ babel_ifp->list[BABEL_FILTER_OUT] = NULL;
+ }
+
+ if (dist->prefix[DISTRIBUTE_IN]) {
+ plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]);
+ if (plist)
+ babel_ifp->prefix[BABEL_FILTER_IN] = plist;
+ else
+ babel_ifp->prefix[BABEL_FILTER_IN] = NULL;
+ } else {
+ babel_ifp->prefix[BABEL_FILTER_IN] = NULL;
+ }
+
+ if (dist->prefix[DISTRIBUTE_OUT]) {
+ plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]);
+ if (plist)
+ babel_ifp->prefix[BABEL_FILTER_OUT] = plist;
+ else
+ babel_ifp->prefix[BABEL_FILTER_OUT] = NULL;
+ } else {
+ babel_ifp->prefix[BABEL_FILTER_OUT] = NULL;
+ }
+}
+
+void
+babel_distribute_update_interface (struct interface *ifp)
+{
+ struct distribute *dist;
+
+ dist = distribute_lookup (ifp->name);
+ if (dist)
+ babel_distribute_update (dist);
+}
+
+/* Update all interface's distribute list. */
+static void
+babel_distribute_update_all (struct prefix_list *notused)
+{
+ struct interface *ifp;
+ struct listnode *node;
+
+ for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp))
+ babel_distribute_update_interface (ifp);
+}
+
+static void
+babel_distribute_update_all_wrapper (struct access_list *notused)
+{
+ babel_distribute_update_all(NULL);
+}
+
+
+/* [Command] */
+DEFUN (router_babel,
+ router_babel_cmd,
+ "router babel",
+ "Enable a routing process\n"
+ "Make Babel instance command\n")
+{
+ int ret;
+
+ vty->node = BABEL_NODE;
+
+ if (!babel_routing_process) {
+ ret = babel_create_routing_process ();
+
+ /* Notice to user we couldn't create Babel. */
+ if (ret < 0) {
+ zlog_warn ("can't create Babel");
+ }
+ }
+
+ return CMD_SUCCESS;
+}
+
+/* [Command] */
+DEFUN (no_router_babel,
+ no_router_babel_cmd,
+ "no router babel",
+ NO_STR
+ "Disable a routing process\n"
+ "Remove Babel instance command\n")
+{
+ if(babel_routing_process)
+ babel_clean_routing_process();
+ return CMD_SUCCESS;
+}
+
+/* [Babel Command] */
+DEFUN (babel_set_protocol_group,
+ babel_set_protocol_group_cmd,
+ "protocol group ADDR",
+ "Set the protocol group, default is ff02::1:6.\n"
+ "IPv6 address")
+{
+ int ret;
+ struct prefix p;
+
+ ret = str2prefix (argv[0], &p);
+
+ /* Given string is: */
+ if (ret) { /* an IPv4 or v6 network */
+ if (p.family != AF_INET6) {
+ return CMD_WARNING;
+ }
+ in6addr_to_uchar(protocol_group, &p.u.prefix6);
+ } else { /* an interface name */
+ return CMD_WARNING;
+ }
+
+ if (ret < 0) {
+ vty_out (vty, "%s must be an ipv6 address%s", argv[0],
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ return CMD_SUCCESS;
+}
+
+/* [Babel Command] */
+DEFUN (babel_set_protocol_port,
+ babel_set_protocol_port_cmd,
+ "protocol port <1-65535>",
+ "Set the protocol port (default is defined in RFC).\n"
+ "IPv6 address")
+{
+ int port = atoi(argv[0]);
+ protocol_port = port;
+
+ return CMD_SUCCESS;
+}
+
+
+void
+babeld_quagga_init(void)
+{
+
+ install_node(&cmd_babel_node, &babel_config_write);
+
+ install_element(CONFIG_NODE, &router_babel_cmd);
+ install_element(CONFIG_NODE, &no_router_babel_cmd);
+
+ install_default(BABEL_NODE);
+
+ babel_if_init();
+
+ /* Access list install. */
+ access_list_init ();
+ access_list_add_hook (babel_distribute_update_all_wrapper);
+ access_list_delete_hook (babel_distribute_update_all_wrapper);
+
+ /* Prefix list initialize.*/
+ prefix_list_init ();
+ prefix_list_add_hook (babel_distribute_update_all);
+ prefix_list_delete_hook (babel_distribute_update_all);
+
+ /* Distribute list install. */
+ distribute_list_init (BABEL_NODE);
+ distribute_list_add_hook (babel_distribute_update);
+ distribute_list_delete_hook (babel_distribute_update);
+}
+
+int /* DEPRECATED: for compatibility with old babeld (configuration.{c,h})*/
+input_filter(const unsigned char *id,
+ const unsigned char *prefix, unsigned short plen,
+ const unsigned char *neigh, unsigned int ifindex)
+{
+ struct interface *ifp = NULL;
+ struct prefix p;
+ p.family = v4mapped(prefix) ? AF_INET : AF_INET6;
+ p.prefixlen = plen;
+ if (p.family == AF_INET) {
+ uchar_to_inaddr(&p.u.prefix4, prefix);
+ } else {
+ uchar_to_in6addr(&p.u.prefix6, prefix);
+ }
+
+ ifp = if_lookup_by_index(ifindex);
+ if (ifp != NULL) {
+ return babel_filter_in(&p, babel_get_if_nfo(ifp));
+ }
+
+ return babel_filter_in(&p, NULL);
+}
+
+int /* DEPRECATED: for compatibility with old babeld */
+output_filter(const unsigned char *id, const unsigned char *prefix,
+ unsigned short plen, unsigned int ifindex)
+{
+ struct interface *ifp = NULL;
+ struct prefix p;
+ p.family = v4mapped(prefix) ? AF_INET : AF_INET6;
+ p.prefixlen = plen;
+ if (p.family == AF_INET) {
+ uchar_to_inaddr(&p.u.prefix4, prefix);
+ } else {
+ uchar_to_in6addr(&p.u.prefix6, prefix);
+ }
+
+ ifp = if_lookup_by_index(ifindex);
+ if (ifp != NULL) {
+ return babel_filter_out(&p, babel_get_if_nfo(ifp));
+ }
+
+ return babel_filter_out(&p, NULL);
+}
+
+int /* DEPRECATED: for compatibility with old babeld */
+redistribute_filter(const unsigned char *prefix, unsigned short plen,
+ unsigned int ifindex, int proto)
+{
+ struct interface *ifp = NULL;
+ struct prefix p;
+ p.family = v4mapped(prefix) ? AF_INET : AF_INET6;
+ p.prefixlen = plen;
+ if (p.family == AF_INET) {
+ uchar_to_inaddr(&p.u.prefix4, prefix);
+ } else {
+ uchar_to_in6addr(&p.u.prefix6, prefix);
+ }
+
+ ifp = if_lookup_by_index(ifindex);
+ if (ifp != NULL) {
+ return babel_filter_redistribute(&p,babel_get_if_nfo(ifp));
+ }
+
+ return babel_filter_redistribute(&p, NULL);
+}