Merge pull request #5793 from ton31337/fix/formatting_show_bgp_summary_failed

[mirror_frr.git] / babeld / route.h

diff --git a/babeld/route.h b/babeld/route.h
index dbb205d189dffaed918afef818364c2f58ed3138..c994d22a9fb01acfb24b04170d9bb010cb8e6290 100644 (file)
--- a/babeld/route.h
+++ b/babeld/route.h
@@ -1,20 +1,4 @@
-/*  
- *  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
 
@@ -37,46 +21,87 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
 
+#ifndef BABEL_ROUTE_H
+#define BABEL_ROUTE_H
+
 #include "babel_interface.h"
 #include "source.h"
 
+enum babel_diversity {
+    DIVERSITY_NONE,
+    DIVERSITY_INTERFACE_1,
+    DIVERSITY_CHANNEL_1,
+    DIVERSITY_CHANNEL,
+};
+
+#define DIVERSITY_HOPS 8
+
 struct babel_route {
     struct source *src;
-    unsigned short metric;
     unsigned short refmetric;
+    unsigned short cost;
+    unsigned short add_metric;
     unsigned short seqno;
     struct neighbour *neigh;
     unsigned char nexthop[16];
     time_t time;
     unsigned short hold_time;    /* in seconds */
+    unsigned short smoothed_metric; /* for route selection */
+    time_t smoothed_metric_time;
     short installed;
+    unsigned char channels[DIVERSITY_HOPS];
+    struct babel_route *next;
 };
 
+struct route_stream;
+
+extern struct babel_route **routes;
+extern int kernel_metric;
+extern enum babel_diversity diversity_kind;
+extern int diversity_factor;
+extern int keep_unfeasible;
+extern int smoothing_half_life;
+
 static inline int
 route_metric(const struct babel_route *route)
 {
-    return route->metric;
+    int m = (int)route->refmetric + route->cost + route->add_metric;
+    return MIN(m, INFINITY);
 }
 
-extern struct babel_route *routes;
-extern int numroutes, maxroutes;
-extern int kernel_metric, allow_duplicates;
+static inline int
+route_metric_noninterfering(const struct babel_route *route)
+{
+    int m =
+        (int)route->refmetric +
+        (diversity_factor * route->cost + 128) / 256 +
+        route->add_metric;
+    m = MAX(m, route->refmetric + 1);
+    return MIN(m, INFINITY);
+}
 
 struct babel_route *find_route(const unsigned char *prefix, unsigned char plen,
                          struct neighbour *neigh, const unsigned char *nexthop);
 struct babel_route *find_installed_route(const unsigned char *prefix,
                                    unsigned char plen);
+int installed_routes_estimate(void);
 void flush_route(struct babel_route *route);
+void flush_all_routes(void);
 void flush_neighbour_routes(struct neighbour *neigh);
 void flush_interface_routes(struct interface *ifp, int v4only);
+struct route_stream *route_stream(int installed);
+struct babel_route *route_stream_next(struct route_stream *stream);
+void route_stream_done(struct route_stream *stream);
 void install_route(struct babel_route *route);
 void uninstall_route(struct babel_route *route);
-void switch_route(struct babel_route *old, struct babel_route *new);
 int route_feasible(struct babel_route *route);
 int route_old(struct babel_route *route);
 int route_expired(struct babel_route *route);
+int route_interferes(struct babel_route *route, struct interface *ifp);
 int update_feasible(struct source *src,
                     unsigned short seqno, unsigned short refmetric);
+void change_smoothing_half_life(int half_life);
+int route_smoothed_metric(struct babel_route *route);
 struct babel_route *find_best_route(const unsigned char *prefix, unsigned char plen,
                               int feasible, struct neighbour *exclude);
 struct babel_route *install_best_route(const unsigned char prefix[16],
@@ -84,11 +109,12 @@ struct babel_route *install_best_route(const unsigned char prefix[16],
 void update_neighbour_metric(struct neighbour *neigh, int change);
 void update_interface_metric(struct interface *ifp);
 void update_route_metric(struct babel_route *route);
-struct babel_route *update_route(const unsigned char *a,
-                           const unsigned char *p, unsigned char plen,
+struct babel_route *update_route(const unsigned char *id,
+                           const unsigned char *prefix, unsigned char plen,
                            unsigned short seqno, unsigned short refmetric,
                            unsigned short interval, struct neighbour *neigh,
-                           const unsigned char *nexthop);
+                           const unsigned char *nexthop,
+                           const unsigned char *channels, int channels_len);
 void retract_neighbour_routes(struct neighbour *neigh);
 void send_unfeasible_request(struct neighbour *neigh, int force,
                              unsigned short seqno, unsigned short metric,
@@ -100,5 +126,4 @@ void route_changed(struct babel_route *route,
 void route_lost(struct source *src, unsigned oldmetric);
 void expire_routes(void);
 
-void babel_uninstall_all_routes(void);
-struct babel_route *babel_route_get_by_source(struct source *src);
+#endif