ofproto: Don't send OpenFlow flow expirations hidden rules.

[sliver-openvswitch.git] / lib / packets.h

diff --git a/lib/packets.h b/lib/packets.h
index c1ae621..4595c12 100644 (file)
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -1,27 +1,31 @@
 /*
  * Copyright (c) 2008, 2009 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.
  */
+
 #ifndef PACKETS_H
 #define PACKETS_H 1
 
+#include <inttypes.h>
 #include <stdint.h>
 #include <string.h>
 #include "compiler.h"
 #include "random.h"
 #include "util.h"
 
+struct ofpbuf;
+
 #define ETH_ADDR_LEN           6
 
 static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] UNUSED
@@ -97,11 +101,38 @@ static inline bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN])
             && (ea[5] & 0xf0) == 0x00);
 }
 
+void compose_benign_packet(struct ofpbuf *, const char *tag,
+                           uint16_t snap_type,
+                           const uint8_t eth_src[ETH_ADDR_LEN]);
+
+/* Example:
+ *
+ * uint8_t mac[ETH_ADDR_LEN];
+ *    [...]
+ * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
+ *
+ */
 #define ETH_ADDR_FMT                                                    \
     "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
 #define ETH_ADDR_ARGS(ea)                                   \
     (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
 
+/* Example:
+ *
+ * char *string = "1 00:11:22:33:44:55 2";
+ * uint8_t mac[ETH_ADDR_LEN];
+ * int a, b;
+ *
+ * if (sscanf(string, "%d"ETH_ADDR_SCAN_FMT"%d",
+ *     &a, ETH_ADDR_SCAN_ARGS(mac), &b) == 1 + ETH_ADDR_SCAN_COUNT + 1) {
+ *     ...
+ * }
+ */
+#define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
+#define ETH_ADDR_SCAN_ARGS(ea) \
+        &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
+#define ETH_ADDR_SCAN_COUNT 6
+
 #define ETH_TYPE_IP            0x0800
 #define ETH_TYPE_ARP           0x0806
 #define ETH_TYPE_VLAN          0x8100