This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / net / ipv4 / datagram.c

diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
new file mode 100644 (file)
index 0000000..f84e104
--- /dev/null
+++ b/net/ipv4/datagram.c
@@ -0,0 +1,73 @@
+/*
+ *     common UDP/RAW code
+ *     Linux INET implementation
+ *
+ * Authors:
+ *     Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
+ *
+ *     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/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <net/sock.h>
+#include <net/tcp.h>
+#include <net/route.h>
+
+int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+{
+       struct inet_opt *inet = inet_sk(sk);
+       struct sockaddr_in *usin = (struct sockaddr_in *) uaddr;
+       struct rtable *rt;
+       u32 saddr;
+       int oif;
+       int err;
+
+       
+       if (addr_len < sizeof(*usin)) 
+               return -EINVAL;
+
+       if (usin->sin_family != AF_INET) 
+               return -EAFNOSUPPORT;
+
+       sk_dst_reset(sk);
+
+       oif = sk->sk_bound_dev_if;
+       saddr = inet->saddr;
+       if (MULTICAST(usin->sin_addr.s_addr)) {
+               if (!oif)
+                       oif = inet->mc_index;
+               if (!saddr)
+                       saddr = inet->mc_addr;
+       }
+       err = ip_route_connect(&rt, usin->sin_addr.s_addr, saddr,
+                              RT_CONN_FLAGS(sk), oif,
+                              sk->sk_protocol,
+                              inet->sport, usin->sin_port, sk);
+       if (err)
+               return err;
+       if ((rt->rt_flags & RTCF_BROADCAST) && !sock_flag(sk, SOCK_BROADCAST)) {
+               ip_rt_put(rt);
+               return -EACCES;
+       }
+       if (!inet->saddr)
+               inet->saddr = rt->rt_src;       /* Update source address */
+       if (!inet->rcv_saddr)
+               inet->rcv_saddr = rt->rt_src;
+       inet->daddr = rt->rt_dst;
+       inet->dport = usin->sin_port;
+       sk->sk_state = TCP_ESTABLISHED;
+       inet->id = jiffies;
+
+       sk_dst_set(sk, &rt->u.dst);
+       return(0);
+}
+
+EXPORT_SYMBOL(ip4_datagram_connect);
+