File: [local] / sys / net / if_atmsubr.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:21 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_atmsubr.c,v 1.26 2006/03/04 22:40:15 brad Exp $ */
/*
*
* Copyright (c) 1996 Charles D. Cranor and Washington University.
* 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.
*/
/*
* @(#)COPYRIGHT 1.1 (NRL) January 1995
*
* NRL grants permission for redistribution and use in source and binary
* forms, with or without modification, of the software and documentation
* created at NRL 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 acknowledgements:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* This product includes software developed at the Information
* Technology Division, US Naval Research Laboratory.
* 4. Neither the name of the NRL nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL 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 NRL 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.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the US Naval
* Research Laboratory (NRL).
*/
/*
* if_atmsubr.c
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <machine/cpu.h>
#include <net/if.h>
#include <net/netisr.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_atm.h>
#include <netinet/in.h>
#include <netinet/if_atm.h>
#include <netinet/if_ether.h> /* XXX: for ETHERTYPE_* */
#if defined(INET) || defined(INET6)
#include <netinet/in_var.h>
#endif
#ifdef NATM
#include <netnatm/natm.h>
#endif
#ifdef INET6
#include <netinet6/in6_var.h>
#endif /* INET6 */
#define senderr(e) { error = (e); goto bad;}
/*
* atm_output: ATM output routine
* inputs:
* "ifp" = ATM interface to output to
* "m0" = the packet to output
* "dst" = the sockaddr to send to (either IP addr, or raw VPI/VCI)
* "rt0" = the route to use
* returns: error code [0 == ok]
*
* note: special semantic: if (dst == NULL) then we assume "m" already
* has an atm_pseudohdr on it and just send it directly.
* [for native mode ATM output] if dst is null, then
* rt0 must also be NULL.
*/
int
atm_output(ifp, m0, dst, rt0)
struct ifnet *ifp;
struct mbuf *m0;
struct sockaddr *dst;
struct rtentry *rt0;
{
u_int16_t etype = 0; /* if using LLC/SNAP */
int s, error = 0, sz, len;
struct atm_pseudohdr atmdst, *ad;
struct mbuf *m = m0;
struct rtentry *rt;
struct atmllc *atmllc;
u_int32_t atm_flags;
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
senderr(ENETDOWN);
/*
* check route
*/
if ((rt = rt0) != NULL) {
if ((rt->rt_flags & RTF_UP) == 0) { /* route went down! */
if ((rt0 = rt = RTALLOC1(dst, 0)) != NULL)
rt->rt_refcnt--;
else
senderr(EHOSTUNREACH);
}
if (rt->rt_flags & RTF_GATEWAY) {
if (rt->rt_gwroute == 0)
goto lookup;
if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
rtfree(rt); rt = rt0;
lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 0);
if ((rt = rt->rt_gwroute) == 0)
senderr(EHOSTUNREACH);
}
}
/* XXX: put RTF_REJECT code here if doing ATMARP */
}
/*
* check for non-native ATM traffic (dst != NULL)
*/
if (dst) {
switch (dst->sa_family) {
#ifdef INET
case AF_INET:
#endif
#ifdef INET6
case AF_INET6:
#endif
#if defined(INET) || defined(INET6)
if (dst->sa_family == AF_INET)
etype = ETHERTYPE_IP;
else
etype = ETHERTYPE_IPV6;
if (!atmresolve(rt, m, dst, &atmdst)) {
m = NULL;
/* XXX: atmresolve already free'd it */
senderr(EHOSTUNREACH);
/* XXX: put ATMARP stuff here */
/* XXX: watch who frees m on failure */
}
break;
#endif
default:
#if defined(__NetBSD__) || defined(__OpenBSD__)
printf("%s: can't handle af%d\n", ifp->if_xname,
dst->sa_family);
#elif defined(__FreeBSD__) || defined(__bsdi__)
printf("%s%d: can't handle af%d\n", ifp->if_name,
ifp->if_unit, dst->sa_family);
#endif
senderr(EAFNOSUPPORT);
}
/*
* must add atm_pseudohdr to data
*/
sz = sizeof(atmdst);
atm_flags = ATM_PH_FLAGS(&atmdst);
if (atm_flags & ATM_PH_LLCSNAP) sz += 8; /* sizeof snap == 8 */
M_PREPEND(m, sz, M_DONTWAIT);
if (m == 0)
senderr(ENOBUFS);
ad = mtod(m, struct atm_pseudohdr *);
*ad = atmdst;
if (atm_flags & ATM_PH_LLCSNAP) {
atmllc = (struct atmllc *)(ad + 1);
bcopy(ATMLLC_HDR, atmllc->llchdr,
sizeof(atmllc->llchdr));
ATM_LLC_SETTYPE(atmllc, etype);
}
}
/*
* Queue message on interface, and start output if interface
* not yet active.
*/
len = m->m_pkthdr.len;
s = splnet();
IFQ_ENQUEUE(&ifp->if_snd, m, NULL, error);
if (error) {
splx(s);
return (error);
}
ifp->if_obytes += len;
if ((ifp->if_flags & IFF_OACTIVE) == 0)
(*ifp->if_start)(ifp);
splx(s);
return (error);
bad:
if (m)
m_freem(m);
return (error);
}
/*
* Process a received ATM packet;
* the packet is in the mbuf chain m.
*/
void
atm_input(ifp, ah, m, rxhand)
struct ifnet *ifp;
struct atm_pseudohdr *ah;
struct mbuf *m;
void *rxhand;
{
struct ifqueue *inq;
u_int16_t etype = ETHERTYPE_IP; /* default */
int s;
if ((ifp->if_flags & IFF_UP) == 0) {
m_freem(m);
return;
}
ifp->if_ibytes += m->m_pkthdr.len;
if (rxhand) {
#ifdef NATM
struct natmpcb *npcb = rxhand;
s = splnet(); /* in case 2 atm cards @ diff lvls */
npcb->npcb_inq++; /* count # in queue */
splx(s);
schednetisr(NETISR_NATM);
inq = &natmintrq;
m->m_pkthdr.rcvif = rxhand; /* XXX: overload */
#else
printf("atm_input: NATM detected but not configured in kernel\n");
m_freem(m);
return;
#endif
} else {
/*
* handle LLC/SNAP header, if present
*/
if (ATM_PH_FLAGS(ah) & ATM_PH_LLCSNAP) {
struct atmllc *alc;
if (m->m_len < sizeof(*alc) &&
(m = m_pullup(m, sizeof(*alc))) == NULL)
return; /* failed */
alc = mtod(m, struct atmllc *);
if (bcmp(alc, ATMLLC_HDR, 6)) {
#if defined(__NetBSD__) || defined(__OpenBSD__)
printf("%s: recv'd invalid LLC/SNAP frame [vp=%d,vc=%d]\n",
ifp->if_xname, ATM_PH_VPI(ah), ATM_PH_VCI(ah));
#elif defined(__FreeBSD__) || defined(__bsdi__)
printf("%s%d: recv'd invalid LLC/SNAP frame [vp=%d,vc=%d]\n",
ifp->if_name, ifp->if_unit, ATM_PH_VPI(ah), ATM_PH_VCI(ah));
#endif
m_freem(m);
return;
}
etype = ATM_LLC_TYPE(alc);
m_adj(m, sizeof(*alc));
}
switch (etype) {
#ifdef INET
case ETHERTYPE_IP:
schednetisr(NETISR_IP);
inq = &ipintrq;
break;
#endif /* INET */
#ifdef INET6
case ETHERTYPE_IPV6:
schednetisr(NETISR_IPV6);
inq = &ip6intrq;
break;
#endif
default:
m_freem(m);
return;
}
}
s = splnet();
IF_INPUT_ENQUEUE(inq, m);
splx(s);
}
/*
* Perform common duties while attaching to interface list
*/
void
atm_ifattach(ifp)
struct ifnet *ifp;
{
ifp->if_type = IFT_ATM;
ifp->if_addrlen = 0;
ifp->if_hdrlen = 0;
ifp->if_mtu = ATMMTU;
ifp->if_output = atm_output;
if_alloc_sadl(ifp);
#ifdef notyet /* if using ATMARP, store hardware address using the next line */
bcopy(ifp->hw_addr, LLADDR(ifp->if_sadl), ifp->if_addrlen);
#endif
}