Compute loss for each path

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>

mud.c

@@ -1246,6 +1246,9 @@ mud_update_window(struct mud *mud, struct mud_path *path,
                   uint64_t send_dt, uint64_t send_bytes,
                   uint64_t recv_dt, uint64_t recv_bytes)
 {
+    if (send_bytes && send_bytes >= recv_bytes)
+        path->loss = (send_bytes - recv_bytes) * 100 / send_bytes;
+
     // TODO
 }
 

mud.h

@@ -36,6 +36,7 @@ struct mud_path {
     uint64_t window;
     uint64_t window_time;
     uint64_t window_size;
+    uint64_t loss;
     struct {
         size_t min;
         size_t max;