/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <config.h>
#include "packets.h"
#include <netinet/in.h>
+#include <stdlib.h>
#include "ofpbuf.h"
+/* Parses 's' as a 16-digit hexadecimal number representing a datapath ID. On
+ * success stores the dpid into '*dpidp' and returns true, on failure stores 0
+ * into '*dpidp' and returns false.
+ *
+ * Rejects an all-zeros dpid as invalid. */
+bool
+dpid_from_string(const char *s, uint64_t *dpidp)
+{
+ *dpidp = (strlen(s) == 16 && strspn(s, "0123456789abcdefABCDEF") == 16
+ ? strtoull(s, NULL, 16)
+ : 0);
+ return *dpidp != 0;
+}
+
+bool
+eth_addr_from_string(const char *s, uint8_t ea[ETH_ADDR_LEN])
+{
+ if (sscanf(s, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(ea))
+ == ETH_ADDR_SCAN_COUNT) {
+ return true;
+ } else {
+ memset(ea, 0, ETH_ADDR_LEN);
+ return false;
+ }
+}
+
/* Fills 'b' with an 802.2 SNAP packet with Ethernet source address 'eth_src',
* the Nicira OUI as SNAP organization and 'snap_type' as SNAP type. The text
* string in 'tag' is enclosed as the packet payload.