Catalli's threaded switch

[sliver-openvswitch.git] / lib / dhcp.c

diff --git a/lib/dhcp.c b/lib/dhcp.c
index b7a1f1f..e6d5735 100644 (file)
--- a/lib/dhcp.c
+++ b/lib/dhcp.c
@@ -1,17 +1,17 @@
 /*
- * Copyright (c) 2008 Nicira Networks.
+ * Copyright (c) 2008, 2010 Nicira Networks.
  *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 #include <config.h>
@@ -24,10 +24,10 @@
 #include <stdlib.h>
 #include "dynamic-string.h"
 #include "ofpbuf.h"
-
-#define THIS_MODULE VLM_dhcp
 #include "vlog.h"
 
+VLOG_DEFINE_THIS_MODULE(dhcp)
+
 /* Information about a DHCP argument type. */
 struct arg_type {
     const char *name;           /* Name. */
@@ -497,7 +497,7 @@ dhcp_option_equals(const struct dhcp_option *a, const struct dhcp_option *b)
 {
     return ((a->data != NULL) == (b->data != NULL)
             && a->n == b->n
-            && !memcmp(a->data, b->data, a->n));
+            && (!a->data || !memcmp(a->data, b->data, a->n)));
 }
 
 /* Replaces 'ds' by a string representation of 'msg'.  If 'multiline' is
@@ -674,7 +674,7 @@ dhcp_parse(struct dhcp_msg *msg, const struct ofpbuf *b_)
     msg->giaddr = dhcp->giaddr;
     memcpy(msg->chaddr, dhcp->chaddr, ETH_ADDR_LEN);
 
-    cookie = ofpbuf_try_pull(&b, sizeof cookie);
+    cookie = ofpbuf_try_pull(&b, sizeof *cookie);
     if (cookie) {
         if (ntohl(*cookie) == DHCP_OPTS_COOKIE) {
             uint8_t overload;