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freebsd-dev/sys/netatm/ipatm/ipatm_usrreq.c
Poul-Henning Kamp 7baee2b7cf Band-XXX-aid an easy to provoke panic. 
MFC:	2 weeks
2003-01-28 12:10:11 +00:00

414 lines
8.4 KiB
C
Raw Blame History

/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD$
*
*/
/*
* IP Over ATM Support
* -------------------
*
* Process user requests
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_sap.h>
#include <netatm/atm_cm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_vc.h>
#include <netatm/atm_ioctl.h>
#include <netatm/atm_stack.h>
#include <netatm/atm_pcb.h>
#include <netatm/atm_var.h>
#include <netatm/ipatm/ipatm_var.h>
#include <netatm/ipatm/ipatm_serv.h>
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
/*
* Process IP PF_ATM ioctls
*
* Called at splnet.
*
* Arguments:
* code PF_ATM sub-operation code
* data pointer to code specific parameter data area
* arg1 pointer to code specific argument
*
* Returns:
* 0 request procesed
* errno error processing request - reason indicated
*
*/
int
ipatm_ioctl(code, data, arg1)
int code;
caddr_t data;
caddr_t arg1;
{
struct atmaddreq *aap;
struct atmdelreq *adp;
struct atminfreq *aip;
struct air_ip_vcc_rsp aivr;
struct atm_nif *nip;
struct ip_nif *inp;
struct ipvcc *ivp;
struct vccb *vcp;
struct ipatmpvc pv;
caddr_t cp;
struct in_addr ip;
int space, err = 0;
switch (code) {
case AIOCS_ADD_PVC:
/*
* Add an IP PVC
*/
aap = (struct atmaddreq *)data;
/*
* Find the IP network interface
*/
if ((nip = atm_nifname(aap->aar_pvc_intf)) == NULL) {
err = ENXIO;
break;
}
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
if (inp->inf_nif == nip)
break;
}
if (inp == NULL) {
err = ENXIO;
break;
}
/*
* Validate PVC params
*/
if (aap->aar_pvc_aal == ATM_AAL5) {
if ((aap->aar_pvc_encaps != ATM_ENC_LLC) &&
(aap->aar_pvc_encaps != ATM_ENC_NULL)) {
err = EINVAL;
break;
}
} else if (aap->aar_pvc_aal == ATM_AAL3_4) {
if (aap->aar_pvc_encaps != ATM_ENC_NULL) {
err = EINVAL;
break;
}
} else {
err = EINVAL;
break;
}
if (aap->aar_pvc_flags & PVC_DYN) {
/*
* For dynamic PVC destination addressing, the
* network interface must have support for this
*/
if ((inp->inf_serv == NULL) ||
(inp->inf_serv->is_arp_pvcopen == NULL)) {
err = EDESTADDRREQ;
break;
}
} else {
u_long dst = ((struct sockaddr_in *)&aap->aar_pvc_dst)
->sin_addr.s_addr;
if (dst == INADDR_ANY) {
err = EINVAL;
break;
}
}
/*
* Build connection request
*/
pv.ipp_ipnif = inp;
pv.ipp_vpi = aap->aar_pvc_vpi;
pv.ipp_vci = aap->aar_pvc_vci;
pv.ipp_encaps = aap->aar_pvc_encaps;
pv.ipp_aal = aap->aar_pvc_aal;
if (aap->aar_pvc_flags & PVC_DYN) {
pv.ipp_dst.sin_addr.s_addr = INADDR_ANY;
} else
pv.ipp_dst = *(struct sockaddr_in *)&aap->aar_pvc_dst;
/*
* Open a new VCC
*/
err = ipatm_openpvc(&pv, &ivp);
break;
case AIOCS_ADD_ARP:
/*
* Add an ARP mapping
*/
aap = (struct atmaddreq *)data;
/*
* Validate IP address
*/
if (aap->aar_arp_dst.sa_family != AF_INET) {
err = EAFNOSUPPORT;
break;
}
ip = SATOSIN(&aap->aar_arp_dst)->sin_addr;
if (aap->aar_arp_intf[0] == '\0') {
/*
* Find the IP network interface associated with
* the supplied IP address
*/
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
if (ipatm_chknif(ip, inp) == 0)
break;
}
if (inp == NULL) {
err = EADDRNOTAVAIL;
break;
}
} else {
/*
* Find the specified IP network interface
*/
if ((nip = atm_nifname(aap->aar_arp_intf)) == NULL) {
err = ENXIO;
break;
}
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
if (inp->inf_nif == nip)
break;
}
if (inp == NULL) {
err = ENXIO;
break;
}
}
if ((ip.s_addr == INADDR_ANY) ||
in_broadcast(ip, &inp->inf_nif->nif_if) ||
IN_MULTICAST(ntohl(ip.s_addr))) {
err = EADDRNOTAVAIL;
break;
}
/*
* Notify the responsible ARP service
*
* XXX: if there is one. No idea how this happens, but at
* least don't panic on a NULL pointer if it does.
*/
if (inp->inf_serv == NULL) {
err = ENXIO;
break;
}
err = (*inp->inf_serv->is_ioctl)(code, data, inp->inf_isintf);
break;
case AIOCS_DEL_ARP:
/*
* Delete an ARP mapping
*/
adp = (struct atmdelreq *)data;
/*
* Validate IP address
*/
if (adp->adr_arp_dst.sa_family != AF_INET) {
err = EAFNOSUPPORT;
break;
}
ip = SATOSIN(&adp->adr_arp_dst)->sin_addr;
if (adp->adr_arp_intf[0] == '\0') {
/*
* Find the IP network interface associated with
* the supplied IP address
*/
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
if (ipatm_chknif(ip, inp) == 0)
break;
}
if (inp == NULL) {
err = EADDRNOTAVAIL;
break;
}
} else {
/*
* Find the specified IP network interface
*/
if ((nip = atm_nifname(adp->adr_arp_intf)) == NULL) {
err = ENXIO;
break;
}
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
if (inp->inf_nif == nip)
break;
}
if (inp == NULL) {
err = ENXIO;
break;
}
}
if ((ip.s_addr == INADDR_ANY) ||
in_broadcast(ip, &inp->inf_nif->nif_if) ||
IN_MULTICAST(ntohl(ip.s_addr))) {
err = EADDRNOTAVAIL;
break;
}
/*
* Notify the responsible ARP service
*/
err = (*inp->inf_serv->is_ioctl)(code, data, inp->inf_isintf);
break;
case AIOCS_INF_IPM:
/*
* Get IP VCC information
*/
aip = (struct atminfreq *)data;
if (aip->air_ip_addr.sa_family != AF_INET)
break;
ip = SATOSIN(&aip->air_ip_addr)->sin_addr;
cp = aip->air_buf_addr;
space = aip->air_buf_len;
/*
* Loop through all our interfaces
*/
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
/*
* Check out each VCC
*/
for (ivp = Q_HEAD(inp->inf_vcq, struct ipvcc); ivp;
ivp = Q_NEXT(ivp, struct ipvcc, iv_elem)) {
if ((ip.s_addr != INADDR_ANY) &&
(ip.s_addr != ivp->iv_dst.s_addr))
continue;
/*
* Make sure there's room in user buffer
*/
if (space < sizeof(aivr)) {
err = ENOSPC;
break;
}
/*
* Fill in info to be returned
*/
bzero((caddr_t)&aivr, sizeof(aivr));
SATOSIN(&aivr.aip_dst_addr)->sin_family =
AF_INET;
SATOSIN(&aivr.aip_dst_addr)->sin_addr.s_addr =
ivp->iv_dst.s_addr;
(void) snprintf(aivr.aip_intf,
sizeof(aivr.aip_intf), "%s%d",
inp->inf_nif->nif_if.if_name,
inp->inf_nif->nif_if.if_unit);
if ((ivp->iv_conn) &&
(ivp->iv_conn->co_connvc) &&
(vcp = ivp->iv_conn->co_connvc->cvc_vcc)) {
aivr.aip_vpi = vcp->vc_vpi;
aivr.aip_vci = vcp->vc_vci;
aivr.aip_sig_proto = vcp->vc_proto;
}
aivr.aip_flags = ivp->iv_flags;
aivr.aip_state = ivp->iv_state;
/*
* Copy data to user buffer and
* update buffer controls
*/
err = copyout((caddr_t)&aivr, cp, sizeof(aivr));
if (err)
break;
cp += sizeof(aivr);
space -= sizeof(aivr);
}
if (err)
break;
}
/*
* Update buffer pointer/count
*/
aip->air_buf_addr = cp;
aip->air_buf_len = space;
break;
default:
err = EOPNOTSUPP;
}
return (err);
}
/*
* Get Connection's Application/Owner Name
*
* Arguments:
* tok ipatm connection token (pointer to ipvcc)
*
* Returns:
* addr pointer to string containing our name
*
*/
caddr_t
ipatm_getname(tok)
void *tok;
{
return ("IP");
}
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