patch-2.1.8 linux/net/ipv6/ipv6_sockglue.c

• Lines: 291
• Date: Sun Nov 3 11:10:33 1996
• Orig file: v2.1.7/linux/net/ipv6/ipv6_sockglue.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.7/linux/net/ipv6/ipv6_sockglue.c linux/net/ipv6/ipv6_sockglue.c
@@ -0,0 +1,290 @@
+/*
+ *	IPv6 BSD socket options interface
+ *	Linux INET6 implementation 
+ *
+ *	Authors:
+ *	Pedro Roque		<roque@di.fc.ul.pt>	
+ *
+ *	Based on linux/net/ipv4/ip_sockglue.c
+ *
+ *	$Id: ipv6_sockglue.c,v 1.12 1996/10/29 22:45:53 roque Exp $
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/sched.h>
+#include <linux/net.h>
+#include <linux/in6.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+
+#include <linux/sysctl.h>
+
+#include <net/sock.h>
+#include <net/snmp.h>
+
+#include <net/ipv6.h>
+#include <net/ndisc.h>
+#include <net/protocol.h>
+#include <net/transp_v6.h>
+#include <net/ipv6_route.h>
+#include <net/addrconf.h>
+#include <net/inet_common.h>
+#include <net/sit.h>
+#include <net/tcp.h>
+#include <net/udp.h>
+
+#include <asm/uaccess.h>
+
+struct ipv6_mib ipv6_statistics={0, };
+struct packet_type ipv6_packet_type =
+{
+	0, 
+	NULL,					/* All devices */
+	ipv6_rcv,
+	NULL,
+	NULL
+};
+
+/*
+ *	addrconf module should be notifyed of a device going up
+ */
+static struct notifier_block ipv6_dev_notf = {
+	addrconf_notify,
+	NULL,
+	0
+};
+
+int ipv6_setsockopt(struct sock *sk, int level, int optname, char *optval, 
+		    int optlen)
+{
+	struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
+	int val, err;
+	int retv = -EOPNOTSUPP;
+
+	if(level!=SOL_IPV6)
+		goto out;
+
+	if (optval == NULL)
+	{
+		val=0;
+	}
+	else
+	{
+		err = get_user(val, (int *) optval);
+		if(err)
+			return err;
+	}
+	
+
+	switch (optname) {
+
+	case IPV6_ADDRFORM:
+		if (val == PF_INET)
+		{
+			if (sk->protocol != IPPROTO_UDP &&
+			    sk->protocol != IPPROTO_TCP)
+			{				
+				goto out;
+			}
+			
+			if (sk->state != TCP_ESTABLISHED)
+			{
+				retv = ENOTCONN;
+				goto out;
+			}
+			
+			if (!(ipv6_addr_type(&np->daddr) & IPV6_ADDR_MAPPED))
+			{
+				retv = -EADDRNOTAVAIL;
+				goto out;
+			}
+
+			if (sk->protocol == IPPROTO_TCP)
+			{
+				struct tcp_opt *tp = &(sk->tp_pinfo.af_tcp);
+				
+				sk->prot = &tcp_prot;
+				tp->af_specific = &ipv4_specific;
+			}
+			else
+			{
+				sk->prot = &udp_prot;
+			}
+			sk->socket->ops = &inet_proto_ops;
+			retv = 0;
+		}
+		else
+		{
+			retv = -EINVAL;
+		}
+		break;
+
+	case IPV6_RXINFO:
+		np->rxinfo = val;
+		retv = 0;
+		break;
+
+	case IPV6_UNICAST_HOPS:
+		if (val > 255)
+		{
+			retv = -EINVAL;
+		}
+		else
+		{
+			np->hop_limit = val;
+			retv = 0;
+		}
+		break;
+
+	case IPV6_MULTICAST_HOPS:
+		if (val > 255)
+		{
+			retv = -EINVAL;
+		}
+		else
+		{
+			np->mcast_hops = val;
+			retv = 0;
+		}
+		break;
+
+	case IPV6_MULTICAST_LOOP:
+		np->mc_loop = val;
+		break;
+
+	case IPV6_MULTICAST_IF:
+	{
+		struct in6_addr addr;
+
+		err=verify_area(VERIFY_READ, optval, sizeof(struct in6_addr));
+		if(err)
+			return err;
+
+		err = copy_from_user(&addr, optval, sizeof(struct in6_addr));
+		if(err)
+			return -EFAULT;
+				
+		if (ipv6_addr_any(&addr))
+		{
+			np->mc_if = NULL;
+		}
+		else
+		{
+			struct inet6_ifaddr *ifp;
+
+			ifp = ipv6_chk_addr(&addr);
+
+			if (ifp == NULL)
+			{
+				retv = -EADDRNOTAVAIL;
+				break;
+			}
+
+			np->mc_if = ifp->idev->dev;
+		}
+		retv = 0;
+		break;
+	}
+	case IPV6_ADD_MEMBERSHIP:
+	case IPV6_DROP_MEMBERSHIP:
+	{
+		struct ipv6_mreq mreq;
+		struct inet6_ifaddr *ifp;
+		struct device *dev = NULL;
+		int err;
+
+		err = copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq));
+		if(err)
+			return -EFAULT;
+		
+		if (ipv6_addr_any(&mreq.ipv6mr_interface))
+		{
+			/* 
+			 *	FIXME
+			 *	default multicast rule.
+			 */
+		}
+		else
+		{
+			if ((ifp = ipv6_chk_addr(&mreq.ipv6mr_interface)))
+			{
+				dev = ifp->idev->dev;
+			}
+		}
+
+		if (dev == NULL)
+		{
+			return -ENODEV;
+		}
+		
+		if (optname == IPV6_ADD_MEMBERSHIP)
+		{
+			retv = ipv6_sock_mc_join(sk, dev, &mreq.ipv6mr_multiaddr);
+		}
+		else
+		{
+			retv = ipv6_sock_mc_drop(sk, dev, &mreq.ipv6mr_multiaddr);
+		}
+	}
+	}
+
+  out:
+	return retv;
+}
+
+int ipv6_getsockopt(struct sock *sk, int level, int optname, char *optval, 
+		    int *optlen)
+{
+	return 0;
+}
+
+#ifdef MODULE
+
+/*
+ *	sysctl registration functions defined in sysctl_net_ipv6.c
+ */
+
+extern void ipv6_sysctl_register(void);
+extern void ipv6_sysctl_unregister(void);
+#endif
+
+void ipv6_init(void)
+{
+	ipv6_packet_type.type = ntohs(ETH_P_IPV6);
+
+	dev_add_pack(&ipv6_packet_type);
+
+#ifdef MODULE
+	ipv6_sysctl_register();
+#endif
+
+	register_netdevice_notifier(&ipv6_dev_notf);
+	
+	ipv6_route_init();
+}
+
+#ifdef MODULE
+void ipv6_cleanup(void)
+{
+	unregister_netdevice_notifier(&ipv6_dev_notf);
+	dev_remove_pack(&ipv6_packet_type);
+	ipv6_sysctl_unregister();	
+	ipv6_route_cleanup();
+	ndisc_cleanup();
+	addrconf_cleanup();	
+}
+#endif
+
+/*
+ * Local variables:
+ *  compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes -O6 -m486 -c ipv6_sockglue.c"
+ * End:
+ */