File: [local] / sys / net / if_gif.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:24 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: if_gif.c,v 1.45 2007/05/26 17:13:30 jason Exp $ */
/* $KAME: if_gif.c,v 1.43 2001/02/20 08:51:07 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/bpf.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/in_gif.h>
#include <netinet/ip.h>
#endif /* INET */
#ifdef INET6
#ifndef INET
#include <netinet/in.h>
#endif
#include <netinet/ip6.h>
#include <netinet6/in6_gif.h>
#endif /* INET6 */
#include <net/if_gif.h>
#include "bpfilter.h"
#include "bridge.h"
void gifattach(int);
int gif_clone_create(struct if_clone *, int);
int gif_clone_destroy(struct ifnet *);
/*
* gif global variable definitions
*/
struct gif_softc_head gif_softc_list;
struct if_clone gif_cloner =
IF_CLONE_INITIALIZER("gif", gif_clone_create, gif_clone_destroy);
/* ARGSUSED */
void
gifattach(count)
int count;
{
LIST_INIT(&gif_softc_list);
if_clone_attach(&gif_cloner);
}
int
gif_clone_create(ifc, unit)
struct if_clone *ifc;
int unit;
{
struct gif_softc *sc;
int s;
sc = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT);
if (!sc)
return (ENOMEM);
bzero(sc, sizeof(*sc));
snprintf(sc->gif_if.if_xname, sizeof sc->gif_if.if_xname,
"%s%d", ifc->ifc_name, unit);
sc->gif_if.if_mtu = GIF_MTU;
sc->gif_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
sc->gif_if.if_ioctl = gif_ioctl;
sc->gif_if.if_start = gif_start;
sc->gif_if.if_output = gif_output;
sc->gif_if.if_type = IFT_GIF;
IFQ_SET_MAXLEN(&sc->gif_if.if_snd, ifqmaxlen);
IFQ_SET_READY(&sc->gif_if.if_snd);
sc->gif_if.if_softc = sc;
if_attach(&sc->gif_if);
if_alloc_sadl(&sc->gif_if);
#if NBPFILTER > 0
bpfattach(&sc->gif_if.if_bpf, &sc->gif_if, DLT_NULL,
sizeof(u_int));
#endif
s = splnet();
LIST_INSERT_HEAD(&gif_softc_list, sc, gif_list);
splx(s);
return (0);
}
int
gif_clone_destroy(ifp)
struct ifnet *ifp;
{
struct gif_softc *sc = ifp->if_softc;
int s;
s = splnet();
LIST_REMOVE(sc, gif_list);
splx(s);
if_detach(ifp);
if (sc->gif_psrc)
free((caddr_t)sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
if (sc->gif_pdst)
free((caddr_t)sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
free(sc, M_DEVBUF);
return (0);
}
void
gif_start(ifp)
struct ifnet *ifp;
{
struct gif_softc *sc = (struct gif_softc*)ifp;
struct mbuf *m;
struct m_tag *mtag;
int family;
int s;
u_int8_t tp;
/* is interface up and running? */
if ((ifp->if_flags & (IFF_OACTIVE | IFF_UP)) != IFF_UP ||
sc->gif_psrc == NULL || sc->gif_pdst == NULL)
return;
/* are the tunnel endpoints valid? */
#ifdef INET
if (sc->gif_psrc->sa_family != AF_INET)
#endif
#ifdef INET6
if (sc->gif_psrc->sa_family != AF_INET6)
#endif
return;
s = splnet();
ifp->if_flags |= IFF_OACTIVE;
splx(s);
while (1) {
s = splnet();
IFQ_DEQUEUE(&ifp->if_snd, m);
splx(s);
if (m == NULL)
break;
/*
* gif may cause infinite recursion calls when misconfigured.
* We'll prevent this by detecting loops.
*/
for (mtag = m_tag_find(m, PACKET_TAG_GIF, NULL); mtag;
mtag = m_tag_find(m, PACKET_TAG_GIF, mtag)) {
if (!bcmp((caddr_t)(mtag + 1), &ifp,
sizeof(struct ifnet *))) {
IF_DROP(&ifp->if_snd);
log(LOG_NOTICE, "gif_output: "
"recursively called too many times\n");
m_freem(m);
break;
}
}
if (mtag)
continue;
mtag = m_tag_get(PACKET_TAG_GIF, sizeof(caddr_t), M_NOWAIT);
if (mtag == NULL) {
m_freem(m);
break;
}
bcopy(&ifp, mtag + 1, sizeof(caddr_t));
m_tag_prepend(m, mtag);
/*
* remove multicast and broadcast flags or encapsulated paket
* ends up as multicast or broadcast packet.
*/
m->m_flags &= ~(M_BCAST|M_MCAST);
/* extract address family */
family = AF_UNSPEC;
tp = *mtod(m, u_int8_t *);
tp = (tp >> 4) & 0xff; /* Get the IP version number. */
#ifdef INET
if (tp == IPVERSION)
family = AF_INET;
#endif
#ifdef INET6
if (tp == (IPV6_VERSION >> 4))
family = AF_INET6;
#endif
#if NBRIDGE > 0
/*
* Check if the packet is comming via bridge and needs
* etherip encapsulation or not.
*/
if (ifp->if_bridge && (m->m_flags & M_PROTO1)) {
m->m_flags &= ~M_PROTO1;
family = AF_LINK;
}
#endif
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap_af(ifp->if_bpf, family, m, BPF_DIRECTION_OUT);
#endif
ifp->if_opackets++;
ifp->if_obytes += m->m_pkthdr.len;
switch (sc->gif_psrc->sa_family) {
#ifdef INET
case AF_INET:
in_gif_output(ifp, family, m);
break;
#endif
#ifdef INET6
case AF_INET6:
in6_gif_output(ifp, family, m);
break;
#endif
default:
m_freem(m);
break;
}
}
ifp->if_flags &= ~IFF_OACTIVE;
}
int
gif_output(ifp, m, dst, rt)
struct ifnet *ifp;
struct mbuf *m;
struct sockaddr *dst;
struct rtentry *rt; /* added in net2 */
{
struct gif_softc *sc = (struct gif_softc*)ifp;
int error = 0;
int s;
if (!(ifp->if_flags & IFF_UP) ||
sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
m_freem(m);
error = ENETDOWN;
goto end;
}
switch (sc->gif_psrc->sa_family) {
#ifdef INET
case AF_INET:
break;
#endif
#ifdef INET6
case AF_INET6:
break;
#endif
default:
m_freem(m);
error = ENETDOWN;
goto end;
}
s = splnet();
/*
* Queue message on interface, and start output if interface
* not yet active.
*/
IFQ_ENQUEUE(&ifp->if_snd, m, NULL, error);
if (error) {
/* mbuf is already freed */
splx(s);
return (error);
}
if ((ifp->if_flags & IFF_OACTIVE) == 0)
(*ifp->if_start)(ifp);
splx(s);
return (error);
end:
if (error)
ifp->if_oerrors++;
return (error);
}
int
gif_ioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct gif_softc *sc = (struct gif_softc*)ifp;
struct ifreq *ifr = (struct ifreq*)data;
int error = 0, size;
struct sockaddr *dst, *src;
struct sockaddr *sa;
int s;
struct gif_softc *sc2;
switch (cmd) {
case SIOCSIFADDR:
break;
case SIOCSIFDSTADDR:
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
switch (ifr->ifr_addr.sa_family) {
#ifdef INET
case AF_INET: /* IP supports Multicast */
break;
#endif /* INET */
#ifdef INET6
case AF_INET6: /* IP6 supports Multicast */
break;
#endif /* INET6 */
default: /* Other protocols doesn't support Multicast */
error = EAFNOSUPPORT;
break;
}
break;
case SIOCSIFPHYADDR:
#ifdef INET6
case SIOCSIFPHYADDR_IN6:
#endif /* INET6 */
case SIOCSLIFPHYADDR:
switch (cmd) {
#ifdef INET
case SIOCSIFPHYADDR:
src = (struct sockaddr *)
&(((struct in_aliasreq *)data)->ifra_addr);
dst = (struct sockaddr *)
&(((struct in_aliasreq *)data)->ifra_dstaddr);
break;
#endif
#ifdef INET6
case SIOCSIFPHYADDR_IN6:
src = (struct sockaddr *)
&(((struct in6_aliasreq *)data)->ifra_addr);
dst = (struct sockaddr *)
&(((struct in6_aliasreq *)data)->ifra_dstaddr);
break;
#endif
case SIOCSLIFPHYADDR:
src = (struct sockaddr *)
&(((struct if_laddrreq *)data)->addr);
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->dstaddr);
break;
default:
return (EINVAL);
}
/* sa_family must be equal */
if (src->sa_family != dst->sa_family)
return (EINVAL);
/* validate sa_len */
switch (src->sa_family) {
#ifdef INET
case AF_INET:
if (src->sa_len != sizeof(struct sockaddr_in))
return (EINVAL);
break;
#endif
#ifdef INET6
case AF_INET6:
if (src->sa_len != sizeof(struct sockaddr_in6))
return (EINVAL);
break;
#endif
default:
return (EAFNOSUPPORT);
}
switch (dst->sa_family) {
#ifdef INET
case AF_INET:
if (dst->sa_len != sizeof(struct sockaddr_in))
return (EINVAL);
break;
#endif
#ifdef INET6
case AF_INET6:
if (dst->sa_len != sizeof(struct sockaddr_in6))
return (EINVAL);
break;
#endif
default:
return (EAFNOSUPPORT);
}
/* check sa_family looks sane for the cmd */
switch (cmd) {
case SIOCSIFPHYADDR:
if (src->sa_family == AF_INET)
break;
return (EAFNOSUPPORT);
#ifdef INET6
case SIOCSIFPHYADDR_IN6:
if (src->sa_family == AF_INET6)
break;
return (EAFNOSUPPORT);
#endif /* INET6 */
case SIOCSLIFPHYADDR:
/* checks done in the above */
break;
}
LIST_FOREACH(sc2, &gif_softc_list, gif_list) {
if (sc2 == sc)
continue;
if (!sc2->gif_pdst || !sc2->gif_psrc)
continue;
if (sc2->gif_pdst->sa_family != dst->sa_family ||
sc2->gif_pdst->sa_len != dst->sa_len ||
sc2->gif_psrc->sa_family != src->sa_family ||
sc2->gif_psrc->sa_len != src->sa_len)
continue;
/* can't configure same pair of address onto two gifs */
if (bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
error = EADDRNOTAVAIL;
goto bad;
}
/* can't configure multiple multi-dest interfaces */
#define multidest(x) \
(((struct sockaddr_in *)(x))->sin_addr.s_addr == INADDR_ANY)
#ifdef INET6
#define multidest6(x) \
(IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(x))->sin6_addr))
#endif
if (dst->sa_family == AF_INET &&
multidest(dst) && multidest(sc2->gif_pdst)) {
error = EADDRNOTAVAIL;
goto bad;
}
#ifdef INET6
if (dst->sa_family == AF_INET6 &&
multidest6(dst) && multidest6(sc2->gif_pdst)) {
error = EADDRNOTAVAIL;
goto bad;
}
#endif
}
if (sc->gif_psrc)
free((caddr_t)sc->gif_psrc, M_IFADDR);
sa = (struct sockaddr *)malloc(src->sa_len, M_IFADDR, M_WAITOK);
bcopy((caddr_t)src, (caddr_t)sa, src->sa_len);
sc->gif_psrc = sa;
if (sc->gif_pdst)
free((caddr_t)sc->gif_pdst, M_IFADDR);
sa = (struct sockaddr *)malloc(dst->sa_len, M_IFADDR, M_WAITOK);
bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
sc->gif_pdst = sa;
s = splnet();
ifp->if_flags |= IFF_RUNNING;
if_up(ifp); /* send up RTM_IFINFO */
splx(s);
error = 0;
break;
#ifdef SIOCDIFPHYADDR
case SIOCDIFPHYADDR:
if (sc->gif_psrc) {
free((caddr_t)sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
}
if (sc->gif_pdst) {
free((caddr_t)sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
/* change the IFF_{UP, RUNNING} flag as well? */
break;
#endif
case SIOCGIFPSRCADDR:
#ifdef INET6
case SIOCGIFPSRCADDR_IN6:
#endif /* INET6 */
if (sc->gif_psrc == NULL) {
error = EADDRNOTAVAIL;
goto bad;
}
src = sc->gif_psrc;
switch (cmd) {
#ifdef INET
case SIOCGIFPSRCADDR:
dst = &ifr->ifr_addr;
size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#ifdef INET6
case SIOCGIFPSRCADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
error = EADDRNOTAVAIL;
goto bad;
}
if (src->sa_len > size)
return (EINVAL);
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
break;
case SIOCGIFPDSTADDR:
#ifdef INET6
case SIOCGIFPDSTADDR_IN6:
#endif /* INET6 */
if (sc->gif_pdst == NULL) {
error = EADDRNOTAVAIL;
goto bad;
}
src = sc->gif_pdst;
switch (cmd) {
#ifdef INET
case SIOCGIFPDSTADDR:
dst = &ifr->ifr_addr;
size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#ifdef INET6
case SIOCGIFPDSTADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
error = EADDRNOTAVAIL;
goto bad;
}
if (src->sa_len > size)
return (EINVAL);
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
break;
case SIOCGLIFPHYADDR:
if (sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
error = EADDRNOTAVAIL;
goto bad;
}
/* copy src */
src = sc->gif_psrc;
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->addr);
size = sizeof(((struct if_laddrreq *)data)->addr);
if (src->sa_len > size)
return (EINVAL);
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
/* copy dst */
src = sc->gif_pdst;
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->dstaddr);
size = sizeof(((struct if_laddrreq *)data)->dstaddr);
if (src->sa_len > size)
return (EINVAL);
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
break;
case SIOCSIFFLAGS:
/* if_ioctl() takes care of it */
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu < GIF_MTU_MIN || ifr->ifr_mtu > GIF_MTU_MAX)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
default:
error = EINVAL;
break;
}
bad:
return (error);
}