Merge TinyOS 2.1.1 into master.

[tinyos-2.x.git] / support / sdk / c / blip / driver / radvd-1.0 / device-common.c

diff --git a/support/sdk/c/blip/driver/radvd-1.0/device-common.c b/support/sdk/c/blip/driver/radvd-1.0/device-common.c
new file mode 100644 (file)
index 0000000..527ba43
--- /dev/null
+++ b/support/sdk/c/blip/driver/radvd-1.0/device-common.c
@@ -0,0 +1,101 @@
+/*
+ *   $Id$
+ *
+ *   Authors:
+ *    Lars Fenneberg           <lf@elemental.net>       
+ *
+ *   This software is Copyright 1996,1997 by the above mentioned author(s), 
+ *   All Rights Reserved.
+ *
+ *   The license which is distributed with this software in the file COPYRIGHT
+ *   applies to this software. If your distribution is missing this file, you
+ *   may request it from <pekkas@netcore.fi>.
+ *
+ */
+
+#include "config.h"
+#include "includes.h"
+#include "radvd.h"
+#include "defaults.h"
+
+int
+check_device(int sock, struct Interface *iface)
+{
+       struct ifreq    ifr;
+       
+       strncpy(ifr.ifr_name, iface->Name, IFNAMSIZ-1);
+       ifr.ifr_name[IFNAMSIZ-1] = '\0';
+
+       if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0)
+       {
+               if (!iface->IgnoreIfMissing)
+                       flog(LOG_ERR, "ioctl(SIOCGIFFLAGS) failed for %s: %s", 
+                               iface->Name, strerror(errno));
+               return (-1);
+       }
+
+       if (!(ifr.ifr_flags & IFF_UP))
+       {
+               if (!iface->IgnoreIfMissing)
+                       flog(LOG_ERR, "interface %s is not UP", iface->Name);
+               return (-1);
+       }
+       
+       if (! iface->UnicastOnly && !(ifr.ifr_flags & IFF_MULTICAST))
+       {
+               flog(LOG_WARNING, "interface %s does not support multicast",
+                       iface->Name);
+               flog(LOG_WARNING, "   do you need to add the UnicastOnly flag?");
+       }
+
+#if 0
+        /* SDH : ignore these warnings...  */
+       if (! iface->UnicastOnly && !(ifr.ifr_flags & IFF_BROADCAST))
+       {
+               flog(LOG_WARNING, "interface %s does not support broadcast",
+                       iface->Name);
+               flog(LOG_WARNING, "   do you need to add the UnicastOnly flag?");
+       }
+#endif
+
+       return 0;
+}
+
+int
+get_v4addr(const char *ifn, unsigned int *dst)
+{
+        struct ifreq    ifr;
+        struct sockaddr_in *addr;
+        int fd;
+
+        if( ( fd = socket(AF_INET,SOCK_DGRAM,0) ) < 0 )
+        {
+                flog(LOG_ERR, "create socket for IPv4 ioctl failed for %s: %s",
+                        ifn, strerror(errno));
+                return (-1);
+        }
+
+        memset(&ifr, 0, sizeof(ifr));
+        strncpy(ifr.ifr_name, ifn, IFNAMSIZ-1);
+        ifr.ifr_name[IFNAMSIZ-1] = '\0';
+        ifr.ifr_addr.sa_family = AF_INET;
+
+        if (ioctl(fd, SIOCGIFADDR, &ifr) < 0)
+        {
+                flog(LOG_ERR, "ioctl(SIOCGIFADDR) failed for %s: %s",
+                        ifn, strerror(errno));
+                close( fd );
+                return (-1);
+        }
+
+        addr = (struct sockaddr_in *)(&ifr.ifr_addr);
+
+        dlog(LOG_DEBUG, 3, "IPv4 address for %s is %s", ifn,
+                inet_ntoa( addr->sin_addr ) );
+
+        *dst = addr->sin_addr.s_addr;
+
+        close( fd );
+
+        return 0;
+}