X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fofp-util.c;h=16a3eeeeb20ecee9b5136f4031fc047b0e9caae2;hb=79903dd171cd7bdbb52710b98dbaa5de1537de87;hp=94682eb479433e0c058ad177bf353ca7d17908e1;hpb=4d326addd3cb44e9608f7d1ef527adf4be26edec;p=openvswitch

diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index 94682eb4..16a3eeee 100644
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -754,3 +754,40 @@ normalize_match(struct ofp_match *m)
     m->wildcards = htonl(wc);
 }
 
+/* Returns a string that describes 'match' in a very literal way, without
+ * interpreting its contents except in a very basic fashion.  The returned
+ * string is intended to be fixed-length, so that it is easy to see differences
+ * between two such strings if one is put above another.  This is useful for
+ * describing changes made by normalize_match().
+ *
+ * The caller must free the returned string (with free()). */
+char *
+ofp_match_to_literal_string(const struct ofp_match *match)
+{
+    return xasprintf("wildcards=%#10"PRIx32" "
+                     " in_port=%5"PRId16" "
+                     " dl_src="ETH_ADDR_FMT" "
+                     " dl_dst="ETH_ADDR_FMT" "
+                     " dl_vlan=%5"PRId16" "
+                     " dl_vlan_pcp=%3"PRId8" "
+                     " dl_type=%#6"PRIx16" "
+                     " nw_tos=%#4"PRIx8" "
+                     " nw_proto=%#4"PRIx16" "
+                     " nw_src=%#10"PRIx32" "
+                     " nw_dst=%#10"PRIx32" "
+                     " tp_src=%5"PRId16" "
+                     " tp_dst=%5"PRId16,
+                     ntohl(match->wildcards),
+                     ntohs(match->in_port),
+                     ETH_ADDR_ARGS(match->dl_src),
+                     ETH_ADDR_ARGS(match->dl_dst),
+                     ntohs(match->dl_vlan),
+                     match->dl_vlan_pcp,
+                     ntohs(match->dl_type),
+                     match->nw_tos,
+                     match->nw_proto,
+                     ntohl(match->nw_src),
+                     ntohl(match->nw_dst),
+                     ntohs(match->tp_src),
+                     ntohs(match->tp_dst));
+}