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freebsd-skq/sys/netnatm/natm.c
rwatson e13b2df854 Merge linux_ioctl.c:1.128 svr4_sockio.c:1.17 altq_cbq.c:1.3 if_oltr.c:1.38 
if_pflog.c:1.14 if_pfsync.c:1.21 if_an.c:1.70 if_ar.c:1.72 if_arl.c:1.11
amrr.c:1.10 onoe.c:1.10 if_ath.c:1.101 awi.c:1.41 if_bfe.c:1.27
if_bge.c:1.93 if_cm_isa.c:1.7 smc90cx6.c:1.16 if_cnw.c:1.20 if_cp.c:1.25
if_cs.c:1.42 if_ct.c:1.26 if_cx.c:1.46 if_ed.c:1.256 if_em.c:1.68
if_en_pci.c:1.37 midway.c:1.66 if_ep.c:1.143 if_ex.c:1.58 if_fatm.c:1.20
if_fe.c:1.93 if_fwe.c:1.38 if_fwip.c:1.8 if_fxp.c:1.244 if_gem.c:1.33
if_hatm.c:1.25 if_hatm_intr.c:1.20 if_hatm_ioctl.c:1.13 if_hatm_rx.c:1.10
if_hatm_tx.c:1.14 if_hme.c:1.39 if_ie.c:1.104 if_ndis.c:1.101
if_ic.c:1.24 if_ipw.c:1.10 if_iwi.c:1.10 if_ixgb.c:1.13 if_lge.c:1.41
if_lnc.c:1.113 if_my.c:1.31 if_nge.c:1.77 if_nve.c:1.10 if_owi.c:1.12
if_patm.c:1.9 if_patm_intr.c:1.6 if_patm_ioctl.c:1.10 if_patm_tx.c:1.10
pdq_ifsubr.c:1.28 if_plip.c:1.38 if_ral.c:1.12 if_ral_pci.c:1.2
if_ray.c:1.81 if_rayvar.h:1.22 if_re.c:1.49 if_sbni.c:1.21 if_sbsh.c:1.14
if_sn.c:1.48 dp83932.c:1.21 if_snc_pccard.c:1.9 if_sr.c:1.70 if_tx.c:1.91
if_txp.c:1.33 if_aue.c:1.92 if_axe.c:1.32 if_cdce.c:1.8 if_cue.c:1.59
if_kue.c:1.66 if_rue.c:1.23 if_udav.c:1.16 if_ural.c:1.12 if_vge.c:1.16
if_vx.c:1.58 if_wi.c:1.185 if_wi_pci.c:1.26 if_wl.c:1.68 if_xe.c:1.60
if_xe_pccard.c:1.30 if_el.c:1.68 i4b_ipr.c:1.35 i4b_isppp.c:1.31
kern_poll.c:1.20 bridge.c:1.94 bridgestp.c:1.4 if_arcsubr.c:1.27
if_atm.h:1.24 if_atmsubr.c:1.40 if_bridge.c:1.16 if_ef.c:1.35
if_ethersubr.c:1.196 if_faith.c:1.37 if_fddisubr.c:1.100 if_fwsubr.c:1.14
if_gif.c:1.54 if_gre.c:1.34 if_iso88025subr.c:1.70 if_loop.c:1.107
if_ppp.c:1.106 if_spppsubr.c:1.121 if_tap.c:1.57 if_tun.c:1.154
if_vlan.c:1.80 ppp_tty.c:1.67 ieee80211_ioctl.c:1.32 atm_if.c:1.31
ng_eiface.c:1.33 ng_ether.c:1.50 ng_fec.c:1.19 ng_iface.c:1.44
ng_sppp.c:1.9 ip_carp.c:1.30 ip_fastfwd.c:1.30 in6.c:1.53 nd6_nbr.c:1.31
natm.c:1.40 if_dc.c:1.162 if_de.c:1.168 if_pcn.c:1.72 if_rl.c:1.154
if_sf.c:1.84 if_sis.c:1.135 if_sk.c:1.108 if_ste.c:1.86 if_ti.c:1.109
if_tl.c:1.101 if_vr.c:1.106 if_wb.c:1.81 if_xl.c:1.194 from HEAD to
RELENG_6:

  Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
  IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
  ifnet.if_drv_flags.  Device drivers are now responsible for
  synchronizing access to these flags, as they are in if_drv_flags.  This
  helps prevent races between the network stack and device driver in
  maintaining the interface flags field.

  Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
  some less so.

  Reviewed by:    pjd, bz

Approved by:	re (scottl)
2005-08-25 05:01:24 +00:00

493 lines
12 KiB
C
Raw Blame History

/* $NetBSD: natm.c,v 1.5 1996/11/09 03:26:26 chuck Exp $ */
/*-
*
* Copyright (c) 1996 Charles D. Cranor and Washington University.
* Copyright (c) 2005 Robert N. M. Watson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* natm.c: native mode ATM access (both aal0 and aal5).
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/signalvar.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sockio.h>
#include <sys/sx.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_atm.h>
#include <net/netisr.h>
#include <netinet/in.h>
#include <netnatm/natm.h>
static const u_long natm5_sendspace = 16*1024;
static const u_long natm5_recvspace = 16*1024;
static const u_long natm0_sendspace = 16*1024;
static const u_long natm0_recvspace = 16*1024;
struct mtx natm_mtx;
/*
* user requests
*/
static int natm_usr_attach(struct socket *, int, d_thread_t *);
static int natm_usr_detach(struct socket *);
static int natm_usr_connect(struct socket *, struct sockaddr *, d_thread_t *);
static int natm_usr_disconnect(struct socket *);
static int natm_usr_shutdown(struct socket *);
static int natm_usr_send(struct socket *, int, struct mbuf *,
struct sockaddr *, struct mbuf *, d_thread_t *);
static int natm_usr_peeraddr(struct socket *, struct sockaddr **);
static int natm_usr_control(struct socket *, u_long, caddr_t,
struct ifnet *, d_thread_t *);
static int natm_usr_abort(struct socket *);
static int natm_usr_bind(struct socket *, struct sockaddr *, d_thread_t *);
static int natm_usr_sockaddr(struct socket *, struct sockaddr **);
static int
natm_usr_attach(struct socket *so, int proto, d_thread_t *p)
{
struct natmpcb *npcb;
int error = 0;
npcb = (struct natmpcb *)so->so_pcb;
KASSERT(npcb == NULL, ("natm_usr_attach: so_pcb != NULL"));
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
if (proto == PROTO_NATMAAL5)
error = soreserve(so, natm5_sendspace, natm5_recvspace);
else
error = soreserve(so, natm0_sendspace, natm0_recvspace);
if (error)
goto out;
}
so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK));
npcb->npcb_socket = so;
out:
return (error);
}
static int
natm_usr_detach(struct socket *so)
{
struct natmpcb *npcb;
int error = 0;
NATM_LOCK();
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL) {
/* XXXRW: Does this case ever actually happen? */
error = EINVAL;
goto out;
}
/*
* we turn on 'drain' *before* we sofree.
*/
npcb_free(npcb, NPCB_DESTROY); /* drain */
ACCEPT_LOCK();
SOCK_LOCK(so);
so->so_pcb = NULL;
sotryfree(so);
out:
NATM_UNLOCK();
return (error);
}
static int
natm_usr_connect(struct socket *so, struct sockaddr *nam, d_thread_t *p)
{
struct natmpcb *npcb;
struct sockaddr_natm *snatm;
struct atmio_openvcc op;
struct ifnet *ifp;
int error = 0;
int proto = so->so_proto->pr_protocol;
NATM_LOCK();
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL) {
/* XXXRW: Does this case ever actually happen? */
error = EINVAL;
goto out;
}
/*
* validate nam and npcb
*/
snatm = (struct sockaddr_natm *)nam;
if (snatm->snatm_len != sizeof(*snatm) ||
(npcb->npcb_flags & NPCB_FREE) == 0) {
error = EINVAL;
goto out;
}
if (snatm->snatm_family != AF_NATM) {
error = EAFNOSUPPORT;
goto out;
}
snatm->snatm_if[IFNAMSIZ - 1] = '\0'; /* XXX ensure null termination
since ifunit() uses strcmp */
/*
* convert interface string to ifp, validate.
*/
ifp = ifunit(snatm->snatm_if);
if (ifp == NULL || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
error = ENXIO;
goto out;
}
if (ifp->if_output != atm_output) {
error = EAFNOSUPPORT;
goto out;
}
/*
* register us with the NATM PCB layer
*/
if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) {
error = EADDRINUSE;
goto out;
}
NATM_UNLOCK();
/*
* open the channel
*/
bzero(&op, sizeof(op));
op.rxhand = npcb;
op.param.flags = ATMIO_FLAG_PVC;
op.param.vpi = npcb->npcb_vpi;
op.param.vci = npcb->npcb_vci;
op.param.rmtu = op.param.tmtu = ifp->if_mtu;
op.param.aal = (proto == PROTO_NATMAAL5) ? ATMIO_AAL_5 : ATMIO_AAL_0;
op.param.traffic = ATMIO_TRAFFIC_UBR;
IFF_LOCKGIANT(ifp);
if (ifp->if_ioctl == NULL ||
ifp->if_ioctl(ifp, SIOCATMOPENVCC, (caddr_t)&op) != 0) {
IFF_UNLOCKGIANT(ifp);
NATM_LOCK();
npcb_free(npcb, NPCB_REMOVE);
error = EIO;
goto out;
}
IFF_UNLOCKGIANT(ifp);
NATM_LOCK();
soisconnected(so);
out:
NATM_UNLOCK();
return (error);
}
static int
natm_usr_disconnect(struct socket *so)
{
struct natmpcb *npcb;
struct atmio_closevcc cl;
struct ifnet *ifp;
int error = 0;
NATM_LOCK();
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL) {
/* XXXRW: Does this case ever actually happen? */
error = EINVAL;
goto out;
}
if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) {
printf("natm: disconnected check\n");
error = EIO;
goto out;
}
ifp = npcb->npcb_ifp;
/*
* disable rx
*/
cl.vpi = npcb->npcb_vpi;
cl.vci = npcb->npcb_vci;
NATM_UNLOCK();
if (ifp->if_ioctl != NULL) {
IFF_LOCKGIANT(ifp);
ifp->if_ioctl(ifp, SIOCATMCLOSEVCC, (caddr_t)&cl);
IFF_UNLOCKGIANT(ifp);
}
NATM_LOCK();
npcb_free(npcb, NPCB_REMOVE);
soisdisconnected(so);
out:
NATM_UNLOCK();
return (error);
}
static int
natm_usr_shutdown(struct socket *so)
{
socantsendmore(so);
return (0);
}
static int
natm_usr_send(struct socket *so, int flags, struct mbuf *m,
struct sockaddr *nam, struct mbuf *control, d_thread_t *p)
{
struct natmpcb *npcb;
struct atm_pseudohdr *aph;
int error = 0;
int proto = so->so_proto->pr_protocol;
NATM_LOCK();
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL) {
/* XXXRW: Does this case ever actually happen? */
error = EINVAL;
goto out;
}
if (control && control->m_len) {
m_freem(control);
m_freem(m);
error = EINVAL;
goto out;
}
/*
* send the data. we must put an atm_pseudohdr on first
*/
M_PREPEND(m, sizeof(*aph), M_DONTWAIT);
if (m == NULL) {
error = ENOBUFS;
goto out;
}
aph = mtod(m, struct atm_pseudohdr *);
ATM_PH_VPI(aph) = npcb->npcb_vpi;
ATM_PH_SETVCI(aph, npcb->npcb_vci);
ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
error = atm_output(npcb->npcb_ifp, m, NULL, NULL);
out:
NATM_UNLOCK();
return (error);
}
static int
natm_usr_peeraddr(struct socket *so, struct sockaddr **nam)
{
struct natmpcb *npcb;
struct sockaddr_natm *snatm, ssnatm;
NATM_LOCK();
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL) {
/* XXXRW: Does this case ever actually happen? */
NATM_UNLOCK();
return (EINVAL);
}
snatm = &ssnatm;
bzero(snatm, sizeof(*snatm));
snatm->snatm_len = sizeof(*snatm);
snatm->snatm_family = AF_NATM;
strlcpy(snatm->snatm_if, npcb->npcb_ifp->if_xname,
sizeof(snatm->snatm_if));
snatm->snatm_vci = npcb->npcb_vci;
snatm->snatm_vpi = npcb->npcb_vpi;
NATM_UNLOCK();
*nam = sodupsockaddr((struct sockaddr *)snatm, M_WAITOK);
return (0);
}
static int
natm_usr_control(struct socket *so, u_long cmd, caddr_t arg,
struct ifnet *ifp, d_thread_t *p)
{
struct natmpcb *npcb;
int error;
/*
* XXXRW: Does this case ever actually happen? And does it even matter
* given that npcb is unused?
*/
npcb = (struct natmpcb *)so->so_pcb;
if (npcb == NULL)
return (EINVAL);
if (ifp == NULL || ifp->if_ioctl == NULL)
return (EOPNOTSUPP);
IFF_LOCKGIANT(ifp);
error = ((*ifp->if_ioctl)(ifp, cmd, arg));
IFF_UNLOCKGIANT(ifp);
return (error);
}
static int
natm_usr_abort(struct socket *so)
{
return (natm_usr_shutdown(so));
}
static int
natm_usr_bind(struct socket *so, struct sockaddr *nam, d_thread_t *p)
{
return (EOPNOTSUPP);
}
static int
natm_usr_sockaddr(struct socket *so, struct sockaddr **nam)
{
return (EOPNOTSUPP);
}
/* xxx - should be const */
struct pr_usrreqs natm_usrreqs = {
.pru_abort = natm_usr_abort,
.pru_attach = natm_usr_attach,
.pru_bind = natm_usr_bind,
.pru_connect = natm_usr_connect,
.pru_control = natm_usr_control,
.pru_detach = natm_usr_detach,
.pru_disconnect = natm_usr_disconnect,
.pru_peeraddr = natm_usr_peeraddr,
.pru_send = natm_usr_send,
.pru_shutdown = natm_usr_shutdown,
.pru_sockaddr = natm_usr_sockaddr,
};
/*
* natmintr: interrupt
*
* note: we expect a socket pointer in rcvif rather than an interface
* pointer. we can get the interface pointer from the so's PCB if
* we really need it.
*/
void
natmintr(struct mbuf *m)
{
struct socket *so;
struct natmpcb *npcb;
#ifdef DIAGNOSTIC
M_ASSERTPKTHDR(m);
#endif
NATM_LOCK();
npcb = (struct natmpcb *)m->m_pkthdr.rcvif; /* XXX: overloaded */
so = npcb->npcb_socket;
npcb->npcb_inq--;
if (npcb->npcb_flags & NPCB_DRAIN) {
if (npcb->npcb_inq == 0)
FREE(npcb, M_PCB); /* done! */
NATM_UNLOCK();
m_freem(m);
return;
}
if (npcb->npcb_flags & NPCB_FREE) {
NATM_UNLOCK();
m_freem(m); /* drop */
return;
}
#ifdef NEED_TO_RESTORE_IFP
m->m_pkthdr.rcvif = npcb->npcb_ifp;
#else
#ifdef DIAGNOSTIC
m->m_pkthdr.rcvif = NULL; /* null it out to be safe */
#endif
#endif
if (sbspace(&so->so_rcv) > m->m_pkthdr.len) {
#ifdef NATM_STAT
natm_sookcnt++;
natm_sookbytes += m->m_pkthdr.len;
#endif
sbappendrecord(&so->so_rcv, m);
sorwakeup(so);
NATM_UNLOCK();
} else {
#ifdef NATM_STAT
natm_sodropcnt++;
natm_sodropbytes += m->m_pkthdr.len;
#endif
NATM_UNLOCK();
m_freem(m);
}
}
/*
* natm0_sysctl: not used, but here in case we want to add something
* later...
*/
int
natm0_sysctl(SYSCTL_HANDLER_ARGS)
{
/* All sysctl names at this level are terminal. */
return (ENOENT);
}
/*
* natm5_sysctl: not used, but here in case we want to add something
* later...
*/
int
natm5_sysctl(SYSCTL_HANDLER_ARGS)
{
/* All sysctl names at this level are terminal. */
return (ENOENT);
}
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