X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fautopath.c;h=b42826c14eb37e00d60c3101c96c8db0c1e527b4;hb=476466a0e7acb3fd008c6bcf0a0f479f1ad4d885;hp=22c7c110927dadf3a6696b157ea10779def53e0d;hpb=72c644fd6de23d69f66b755237e3f5c74b4d9af7;p=sliver-openvswitch.git

diff --git a/lib/autopath.c b/lib/autopath.c
index 22c7c1109..b42826c14 100644
--- a/lib/autopath.c
+++ b/lib/autopath.c
@@ -82,5 +82,14 @@ autopath_parse(struct nx_action_autopath *ap, const char *s_)
 int
 autopath_check(const struct nx_action_autopath *ap, const struct flow *flow)
 {
-    return nxm_dst_check(ap->dst, ap->ofs_nbits, 16, flow);
+    int n_bits = nxm_decode_n_bits(ap->ofs_nbits);
+    int ofs = nxm_decode_ofs(ap->ofs_nbits);
+
+    if (n_bits < 16) {
+        VLOG_WARN("at least 16 bit destination is required for autopath "
+                  "action.");
+        return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
+    }
+
+    return nxm_dst_check(ap->dst, ofs, n_bits, flow);
 }