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      1 /*	$NetBSD: netinet_component.c,v 1.13 2022/09/03 02:48:01 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Development of this software was supported by The Nokia Foundation
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: netinet_component.c,v 1.13 2022/09/03 02:48:01 thorpej Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/domain.h>
     35 #include <sys/protosw.h>
     36 #include <sys/socketvar.h>
     37 
     38 #include <net/if.h>
     39 #include <netinet/in.h>
     40 #include <netinet/in_var.h>
     41 #include <netinet/ip_var.h>
     42 #include <netinet/if_inarp.h>
     43 
     44 #include <rump-sys/kern.h>
     45 #include <rump-sys/net.h>
     46 
     47 RUMP_COMPONENT(RUMP_COMPONENT_NET)
     48 {
     49 	extern struct domain arpdomain, inetdomain;
     50 
     51 	domain_attach(&arpdomain);
     52 	domain_attach(&inetdomain);
     53 }
     54 
     55 int carpattach(int);
     56 
     57 RUMP_COMPONENT(RUMP_COMPONENT_NET_IF)
     58 {
     59 
     60 	carpattach(1);
     61 }
     62 
     63 RUMP_COMPONENT(RUMP_COMPONENT_NET_IFCFG)
     64 {
     65 	struct ifaliasreq ia;
     66 	struct sockaddr_in *sin;
     67 	struct socket *so;
     68 	int error;
     69 
     70 	if (lo0ifp == NULL)
     71 		panic("lo0 config: rumpnet_net has not been initialized");
     72 
     73 	if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0, curlwp, NULL)) != 0)
     74 		panic("lo0 config: cannot create socket");
     75 
     76 	/* configure 127.0.0.1 for lo0 */
     77 	memset(&ia, 0, sizeof(ia));
     78 	strcpy(ia.ifra_name, "lo0");
     79 	sin = (struct sockaddr_in *)&ia.ifra_addr;
     80 	sin->sin_family = AF_INET;
     81 	sin->sin_len = sizeof(struct sockaddr_in);
     82 	sin->sin_addr.s_addr = inet_addr("127.0.0.1");
     83 
     84 	sin = (struct sockaddr_in *)&ia.ifra_mask;
     85 	sin->sin_family = AF_INET;
     86 	sin->sin_len = sizeof(struct sockaddr_in);
     87 	sin->sin_addr.s_addr = inet_addr("255.0.0.0");
     88 
     89 	sin = (struct sockaddr_in *)&ia.ifra_broadaddr;
     90 	sin->sin_family = AF_INET;
     91 	sin->sin_len = sizeof(struct sockaddr_in);
     92 	sin->sin_addr.s_addr = inet_addr("127.255.255.255");
     93 
     94 	KERNEL_LOCK(1, NULL);
     95 	IFNET_LOCK(lo0ifp);
     96 	in_control(so, SIOCAIFADDR, &ia, lo0ifp);
     97 	IFNET_UNLOCK(lo0ifp);
     98 	KERNEL_UNLOCK_ONE(NULL);
     99 	if_up(lo0ifp);
    100 	soclose(so);
    101 }
    102