multipath: Correctly calculate number of required destination bits.

[sliver-openvswitch.git] / lib / multipath.c

diff --git a/lib/multipath.c b/lib/multipath.c
index f68dafd..adc000d 100644 (file)
--- a/lib/multipath.c
+++ b/lib/multipath.c
@@ -37,7 +37,7 @@ int
 multipath_check(const struct nx_action_multipath *mp, const struct flow *flow)
 {
     uint32_t n_links = ntohs(mp->max_link) + 1;
-    size_t min_n_bits = log_2_floor(n_links) + 1;
+    size_t min_n_bits = log_2_ceil(n_links);
     int ofs = nxm_decode_ofs(mp->ofs_nbits);
     int n_bits = nxm_decode_n_bits(mp->ofs_nbits);
     int error;