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/resend.h b/babeld/resend.h
new file mode 100644
index 0000000..fdb5730
--- /dev/null
+++ b/babeld/resend.h
@@ -0,0 +1,77 @@
+/*
+ * 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
+
+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.
+*/
+
+#define REQUEST_TIMEOUT 65000
+#define UPDATE_MAX 4
+
+#define RESEND_REQUEST 1
+#define RESEND_UPDATE 2
+
+struct resend {
+ unsigned char kind;
+ unsigned char max;
+ unsigned short delay;
+ struct timeval time;
+ unsigned char prefix[16];
+ unsigned char plen;
+ unsigned short seqno;
+ unsigned char id[8];
+ struct interface *ifp;
+ struct resend *next;
+};
+
+extern struct timeval resend_time;
+
+struct resend *find_request(const unsigned char *prefix, unsigned char plen,
+ struct resend **previous_return);
+void flush_resends(struct neighbour *neigh);
+int record_resend(int kind, const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id,
+ struct interface *ifp, int delay);
+int unsatisfied_request(const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id);
+int request_redundant(struct interface *ifp,
+ const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id);
+int satisfy_request(const unsigned char *prefix, unsigned char plen,
+ unsigned short seqno, const unsigned char *id,
+ struct interface *ifp);
+
+void expire_resend(void);
+void recompute_resend_time(void);
+void do_resend(void);