Merge TinyOS 2.1.1 into master.

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

diff --git a/support/sdk/c/blip/driver/radvd-1.0/socket.c b/support/sdk/c/blip/driver/radvd-1.0/socket.c
new file mode 100644 (file)
index 0000000..8c7ad6c
--- /dev/null
+++ b/support/sdk/c/blip/driver/radvd-1.0/socket.c
@@ -0,0 +1,107 @@
+/*
+ *   $Id$
+ *
+ *   Authors:
+ *    Pedro Roque              <roque@di.fc.ul.pt>
+ *    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"
+
+/* Note: these are applicable to receiving sockopts only */
+#if defined IPV6_HOPLIMIT && !defined IPV6_RECVHOPLIMIT
+# define IPV6_RECVHOPLIMIT IPV6_HOPLIMIT
+#endif
+
+#if defined IPV6_PKTINFO && !defined IPV6_RECVPKTINFO
+# define IPV6_RECVPKTINFO IPV6_PKTINFO
+#endif
+
+int
+open_icmpv6_socket(void)
+{
+       int sock;
+       struct icmp6_filter filter;
+       int err, val;
+
+        sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
+       if (sock < 0)
+       {
+               flog(LOG_ERR, "can't create socket(AF_INET6): %s", strerror(errno));
+               return (-1);
+       }
+
+       val = 1;
+       err = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &val, sizeof(val));
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(IPV6_RECVPKTINFO): %s", strerror(errno));
+               return (-1);
+       }
+
+       val = 2;
+#ifdef __linux__
+       err = setsockopt(sock, IPPROTO_RAW, IPV6_CHECKSUM, &val, sizeof(val));
+#else
+       err = setsockopt(sock, IPPROTO_IPV6, IPV6_CHECKSUM, &val, sizeof(val));
+#endif
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(IPV6_CHECKSUM): %s", strerror(errno));
+               return (-1);
+       }
+
+       val = 255;
+       err = setsockopt(sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &val, sizeof(val));
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(IPV6_UNICAST_HOPS): %s", strerror(errno));
+               return (-1);
+       }
+
+       val = 255;
+       err = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &val, sizeof(val));
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(IPV6_MULTICAST_HOPS): %s", strerror(errno));
+               return (-1);
+       }
+
+#ifdef IPV6_RECVHOPLIMIT
+       val = 1;
+       err = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &val, sizeof(val));
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(IPV6_RECVHOPLIMIT): %s", strerror(errno));
+               return (-1);
+       }
+#endif
+
+       /*
+        * setup ICMP filter
+        */
+       
+       ICMP6_FILTER_SETBLOCKALL(&filter);
+       ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter);
+       ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
+
+       err = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
+                        sizeof(filter));
+       if (err < 0)
+       {
+               flog(LOG_ERR, "setsockopt(ICMPV6_FILTER): %s", strerror(errno));
+               return (-1);
+       }
+
+       return sock;
+}