-
- oh = ofpbuf_at_assert(*msgp, 0, sizeof *oh);
- if ((oh->version != vconn->version || oh->version == 0)
- && oh->type != OFPT_HELLO
- && oh->type != OFPT_ERROR
- && oh->type != OFPT_ECHO_REQUEST
- && oh->type != OFPT_ECHO_REPLY
- && oh->type != OFPT_VENDOR)
- {
- if (vconn->version == 0) {
- VLOG_ERR_RL(&bad_ofmsg_rl,
- "%s: received OpenFlow message type %"PRIu8" "
- "before version negotiation complete",
- vconn->name, oh->type);
- } else {
- VLOG_ERR_RL(&bad_ofmsg_rl,
- "%s: received OpenFlow version 0x%02"PRIx8" "
- "!= expected %02x",
- vconn->name, oh->version, vconn->version);
- }
- ofpbuf_delete(*msgp);
- retval = EPROTO;
- }
- }
- if (retval) {
- *msgp = NULL;