diff options
-rw-r--r-- | usr.sbin/switchd/ofp10.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/usr.sbin/switchd/ofp10.c b/usr.sbin/switchd/ofp10.c index b002c37f7eb..205f7b0a184 100644 --- a/usr.sbin/switchd/ofp10.c +++ b/usr.sbin/switchd/ofp10.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ofp10.c,v 1.11 2016/09/30 12:48:27 reyk Exp $ */ +/* $OpenBSD: ofp10.c,v 1.12 2016/10/05 15:42:28 reyk Exp $ */ /* * Copyright (c) 2013-2016 Reyk Floeter <reyk@openbsd.org> @@ -85,6 +85,40 @@ struct ofp_callback ofp10_callbacks[] = { }; int +ofp_validate_header(struct switchd *sc, + struct sockaddr_storage *src, struct sockaddr_storage *dst, + struct ofp_header *oh, uint8_t version) +{ + struct constmap *tmap; + + /* For debug, don't verify the header if the version is unset */ + if (version != OFP_V_0 && + (oh->oh_version != version || + oh->oh_type >= OFP_T_TYPE_MAX)) + return (-1); + + switch (version) { + case OFP_V_1_0: + case OFP_V_1_1: + tmap = ofp10_t_map; + break; + case OFP_V_1_3: + default: + tmap = ofp_t_map; + break; + } + + log_debug("%s > %s: version %s type %s length %u xid %u", + print_host(src, NULL, 0), + print_host(dst, NULL, 0), + print_map(oh->oh_version, ofp_v_map), + print_map(oh->oh_type, tmap), + ntohs(oh->oh_length), ntohl(oh->oh_xid)); + + return (0); +} + +int ofp10_validate(struct switchd *sc, struct sockaddr_storage *src, struct sockaddr_storage *dst, struct ofp_header *oh, struct ibuf *ibuf) |