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/route.h b/babeld/route.h
new file mode 100644
index 0000000..e36f6c3
--- /dev/null
+++ b/babeld/route.h
@@ -0,0 +1,104 @@
+/*
+ * 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 (c) 2007, 2008 by Juliusz Chroboczek
+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 "babel_interface.h"
+#include "source.h"
+
+struct route {
+ struct source *src;
+ unsigned short metric;
+ unsigned short refmetric;
+ unsigned short seqno;
+ struct neighbour *neigh;
+ unsigned char nexthop[16];
+ time_t time;
+ unsigned short hold_time; /* in seconds */
+ short installed;
+};
+
+static inline int
+route_metric(const struct route *route)
+{
+ return route->metric;
+}
+
+extern struct route *routes;
+extern int numroutes, maxroutes;
+extern int kernel_metric, allow_duplicates;
+
+struct route *find_route(const unsigned char *prefix, unsigned char plen,
+ struct neighbour *neigh, const unsigned char *nexthop);
+struct route *find_installed_route(const unsigned char *prefix,
+ unsigned char plen);
+void flush_route(struct route *route);
+void flush_neighbour_routes(struct neighbour *neigh);
+void flush_interface_routes(struct interface *ifp, int v4only);
+void install_route(struct route *route);
+void uninstall_route(struct route *route);
+void switch_route(struct route *old, struct route *new);
+int route_feasible(struct route *route);
+int route_old(struct route *route);
+int route_expired(struct route *route);
+int update_feasible(struct source *src,
+ unsigned short seqno, unsigned short refmetric);
+struct route *find_best_route(const unsigned char *prefix, unsigned char plen,
+ int feasible, struct neighbour *exclude);
+struct route *install_best_route(const unsigned char prefix[16],
+ unsigned char plen);
+void update_neighbour_metric(struct neighbour *neigh, int change);
+void update_interface_metric(struct interface *ifp);
+void update_route_metric(struct route *route);
+struct route *update_route(const unsigned char *a,
+ const unsigned char *p, unsigned char plen,
+ unsigned short seqno, unsigned short refmetric,
+ unsigned short interval, struct neighbour *neigh,
+ const unsigned char *nexthop);
+void retract_neighbour_routes(struct neighbour *neigh);
+void send_unfeasible_request(struct neighbour *neigh, int force,
+ unsigned short seqno, unsigned short metric,
+ struct source *src);
+void send_triggered_update(struct route *route,
+ struct source *oldsrc, unsigned oldmetric);
+void route_changed(struct route *route,
+ struct source *oldsrc, unsigned short oldmetric);
+void route_lost(struct source *src, unsigned oldmetric);
+void expire_routes(void);
+
+void babel_uninstall_all_routes(void);
+struct route *babel_route_get_by_source(struct source *src);