ofp-util: Improve log message for bad OpenFlow action length.

First, this is an important message since it indicates a bug in the
controller, so log it at warning level instead of debug level--we want to
know about it.

Second, properly byteswap the action type.

Third, use the correct PRIu16 format specified for a uint16_t.

diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index 8f28edb..03ddf0e 100644 (file)
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -1637,9 +1637,9 @@ check_action_exact_len(const union ofp_action *a, unsigned int len,
                        unsigned int required_len)
 {
     if (len != required_len) {
-        VLOG_DBG_RL(&bad_ofmsg_rl,
-                    "action %u has invalid length %"PRIu16" (must be %u)\n",
-                    a->type, ntohs(a->header.len), required_len);
+        VLOG_WARN_RL(&bad_ofmsg_rl, "action %"PRIu16" has invalid length "
+                     "%"PRIu16" (must be %u)\n",
+                     ntohs(a->type), ntohs(a->header.len), required_len);
         return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_LEN);
     }
     return 0;