940c15d08f
bus_dma_tag_create. We need to be sure that our packets are kept in-sequence (that's how ATM is supposed to work) and therefor use BUS_DMA_NOWAIT in all calls to bus_dmamap_load. For memory allocated with bus_dmamem_alloc the use of anything other than NULL arguments for the locking is anyway bogus because this memory never should need bouncing and hence the load should never be defered. Allow the receipt of OAM and RM cells on raw connections. Caveat: it seems that RM cells are still processed by the hardware even when we open the connection as UBR.
327 lines
7.8 KiB
C
327 lines
7.8 KiB
C
/*
|
|
* Copyright (c) 2001-2003
|
|
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* Author: Hartmut Brandt <harti@freebsd.org>
|
|
*
|
|
* ForeHE driver.
|
|
*
|
|
* Receive.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_inet.h"
|
|
#include "opt_natm.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/module.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/sysctl.h>
|
|
#include <vm/uma.h>
|
|
|
|
#include <sys/sockio.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
#include <net/if_atm.h>
|
|
#include <net/route.h>
|
|
#ifdef ENABLE_BPF
|
|
#include <net/bpf.h>
|
|
#endif
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_atm.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/rman.h>
|
|
#include <pci/pcireg.h>
|
|
#include <pci/pcivar.h>
|
|
|
|
#include <dev/utopia/utopia.h>
|
|
#include <dev/hatm/if_hatmconf.h>
|
|
#include <dev/hatm/if_hatmreg.h>
|
|
#include <dev/hatm/if_hatmvar.h>
|
|
|
|
void
|
|
hatm_rx(struct hatm_softc *sc, u_int cid, u_int flags, struct mbuf *m0,
|
|
u_int len)
|
|
{
|
|
struct hevcc *vcc;
|
|
struct atm_pseudohdr aph;
|
|
struct mbuf *m, *m1;
|
|
u_int vpi, vci;
|
|
u_char *ptr;
|
|
|
|
DBG(sc, RX, ("cid=%#x flags=%#x len=%u mbuf=%p", cid, flags, len, m0));
|
|
|
|
vcc = sc->vccs[cid];
|
|
if (vcc == NULL)
|
|
goto drop;
|
|
|
|
if (flags & HE_REGM_RBRQ_CON_CLOSED) {
|
|
if (vcc->vflags & HE_VCC_RX_CLOSING) {
|
|
vcc->vflags &= ~HE_VCC_RX_CLOSING;
|
|
if (vcc->vflags & HE_VCC_ASYNC) {
|
|
if (!(vcc->vflags & HE_VCC_OPEN))
|
|
hatm_vcc_closed(sc, cid);
|
|
} else
|
|
cv_signal(&sc->vcc_cv);
|
|
}
|
|
goto drop;
|
|
}
|
|
|
|
if (!(vcc->vflags & HE_VCC_RX_OPEN))
|
|
goto drop;
|
|
|
|
if (flags & HE_REGM_RBRQ_HBUF_ERROR) {
|
|
sc->istats.hbuf_error++;
|
|
if (vcc->chain != NULL) {
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
}
|
|
goto drop;
|
|
}
|
|
|
|
if ((m0->m_len = len) == 0) {
|
|
sc->istats.empty_hbuf++;
|
|
m_free(m0);
|
|
|
|
} else if (vcc->chain == NULL) {
|
|
sc->istats.rx_seg++;
|
|
vcc->chain = vcc->last = m0;
|
|
vcc->last->m_next = NULL;
|
|
vcc->chain->m_pkthdr.len = m0->m_len;
|
|
vcc->chain->m_pkthdr.rcvif = &sc->ifatm.ifnet;
|
|
|
|
} else {
|
|
sc->istats.rx_seg++;
|
|
vcc->last->m_next = m0;
|
|
vcc->last = m0;
|
|
vcc->last->m_next = NULL;
|
|
vcc->chain->m_pkthdr.len += m0->m_len;
|
|
}
|
|
|
|
if (!(flags & HE_REGM_RBRQ_END_PDU))
|
|
return;
|
|
|
|
if (flags & HE_REGM_RBRQ_CRC_ERROR) {
|
|
if (vcc->chain)
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
sc->istats.crc_error++;
|
|
sc->ifatm.ifnet.if_ierrors++;
|
|
return;
|
|
}
|
|
if (flags & HE_REGM_RBRQ_LEN_ERROR) {
|
|
if (vcc->chain)
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
sc->istats.len_error++;
|
|
sc->ifatm.ifnet.if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
#if 0
|
|
{
|
|
struct mbuf *tmp;
|
|
|
|
for (tmp = vcc->chain; tmp != NULL; tmp = tmp->m_next) {
|
|
printf("mbuf %p: len=%u\n", tmp, tmp->m_len);
|
|
for (ptr = mtod(tmp, u_char *);
|
|
ptr < mtod(tmp, u_char *) + tmp->m_len; ptr++)
|
|
printf("%02x ", *ptr);
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (vcc->param.aal == ATMIO_AAL_5) {
|
|
/*
|
|
* Need to remove padding and the trailer. The trailer
|
|
* may be split accross buffers according to 2.10.1.2
|
|
* Assume that mbufs sizes are even (buffer sizes and cell
|
|
* payload sizes are) and that there are no empty mbufs.
|
|
*/
|
|
m = vcc->last;
|
|
if (m->m_len == 2) {
|
|
/* Ah, oh, only part of CRC */
|
|
if (m == vcc->chain) {
|
|
/* ups */
|
|
sc->istats.short_aal5++;
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
return;
|
|
}
|
|
for (m1 = vcc->chain; m1->m_next != m; m1 = m1->m_next)
|
|
;
|
|
ptr = (u_char *)m1->m_data + m1->m_len - 4;
|
|
|
|
} else if (m->m_len == 4) {
|
|
/* Ah, oh, only CRC */
|
|
if (m == vcc->chain) {
|
|
/* ups */
|
|
sc->istats.short_aal5++;
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
return;
|
|
}
|
|
for (m1 = vcc->chain; m1->m_next != m; m1 = m1->m_next)
|
|
;
|
|
ptr = (u_char *)m1->m_data + m1->m_len - 2;
|
|
|
|
} else if (m->m_len >= 6) {
|
|
ptr = (u_char *)m->m_data + m->m_len - 6;
|
|
} else
|
|
panic("hatm_rx: bad mbuf len %d", m->m_len);
|
|
|
|
len = (ptr[0] << 8) + ptr[1];
|
|
if (len > (u_int)vcc->chain->m_pkthdr.len - 4) {
|
|
sc->istats.badlen_aal5++;
|
|
m_freem(vcc->chain);
|
|
vcc->chain = vcc->last = NULL;
|
|
return;
|
|
}
|
|
m_adj(vcc->chain, -(vcc->chain->m_pkthdr.len - len));
|
|
}
|
|
m = vcc->chain;
|
|
vcc->chain = vcc->last = NULL;
|
|
|
|
#ifdef ENABLE_BPF
|
|
if (!(vcc->param.flags & ATMIO_FLAG_NG) &&
|
|
(vcc->param.flags & ATM_PH_AAL5) &&
|
|
(vcc->param.flags & ATM_PH_LLCSNAP))
|
|
BPF_MTAP(&sc->ifatm.ifnet, m);
|
|
#endif
|
|
|
|
vpi = HE_VPI(cid);
|
|
vci = HE_VCI(cid);
|
|
|
|
ATM_PH_FLAGS(&aph) = vcc->param.flags & 0xff;
|
|
ATM_PH_VPI(&aph) = vpi;
|
|
ATM_PH_SETVCI(&aph, vci);
|
|
|
|
sc->ifatm.ifnet.if_ipackets++;
|
|
/* this is in if_atmsubr.c */
|
|
/* sc->ifatm.ifnet.if_ibytes += len; */
|
|
|
|
vcc->ibytes += len;
|
|
vcc->ipackets++;
|
|
|
|
#if 0
|
|
{
|
|
struct mbuf *tmp;
|
|
|
|
for (tmp = m; tmp != NULL; tmp = tmp->m_next) {
|
|
printf("mbuf %p: len=%u\n", tmp, tmp->m_len);
|
|
for (ptr = mtod(tmp, u_char *);
|
|
ptr < mtod(tmp, u_char *) + tmp->m_len; ptr++)
|
|
printf("%02x ", *ptr);
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
atm_input(&sc->ifatm.ifnet, &aph, m, vcc->rxhand);
|
|
|
|
return;
|
|
|
|
drop:
|
|
if (m0 != NULL)
|
|
m_free(m0);
|
|
}
|
|
|
|
void
|
|
hatm_rx_vcc_open(struct hatm_softc *sc, u_int cid)
|
|
{
|
|
struct hevcc *vcc = sc->vccs[cid];
|
|
uint32_t rsr0, rsr1, rsr4;
|
|
|
|
rsr0 = rsr1 = rsr4 = 0;
|
|
|
|
if (vcc->param.traffic == ATMIO_TRAFFIC_ABR) {
|
|
rsr1 |= HE_REGM_RSR1_AQI;
|
|
rsr4 |= HE_REGM_RSR4_AQI;
|
|
}
|
|
|
|
if (vcc->param.aal == ATMIO_AAL_5) {
|
|
rsr0 |= HE_REGM_RSR0_STARTPDU | HE_REGM_RSR0_AAL_5;
|
|
} else if (vcc->param.aal == ATMIO_AAL_0) {
|
|
rsr0 |= HE_REGM_RSR0_AAL_0;
|
|
} else {
|
|
if (sc->rbp_s1.size != 0) {
|
|
rsr1 |= (1 << HE_REGS_RSR1_GROUP);
|
|
rsr4 |= (1 << HE_REGS_RSR4_GROUP);
|
|
}
|
|
rsr0 |= HE_REGM_RSR0_AAL_RAW | HE_REGM_RSR0_PTI7 |
|
|
HE_REGM_RSR0_RM | HE_REGM_RSR0_F5OAM;
|
|
}
|
|
rsr0 |= HE_REGM_RSR0_OPEN;
|
|
|
|
WRITE_RSR(sc, cid, 0, 0xf, rsr0);
|
|
WRITE_RSR(sc, cid, 1, 0xf, rsr1);
|
|
WRITE_RSR(sc, cid, 4, 0xf, rsr4);
|
|
|
|
vcc->vflags |= HE_VCC_RX_OPEN;
|
|
}
|
|
|
|
/*
|
|
* Close the RX side of a VCC.
|
|
*/
|
|
void
|
|
hatm_rx_vcc_close(struct hatm_softc *sc, u_int cid)
|
|
{
|
|
struct hevcc *vcc = sc->vccs[cid];
|
|
uint32_t v;
|
|
|
|
vcc->vflags |= HE_VCC_RX_CLOSING;
|
|
WRITE_RSR(sc, cid, 0, 0xf, 0);
|
|
|
|
v = READ4(sc, HE_REGO_RCCSTAT);
|
|
while ((sc->ifatm.ifnet.if_flags & IFF_RUNNING) &&
|
|
(READ4(sc, HE_REGO_RCCSTAT) & HE_REGM_RCCSTAT_PROG))
|
|
cv_timedwait(&sc->cv_rcclose, &sc->mtx, 1);
|
|
|
|
if (!(sc->ifatm.ifnet.if_flags & IFF_RUNNING))
|
|
return;
|
|
|
|
WRITE_MBOX4(sc, HE_REGO_RCON_CLOSE, cid);
|
|
|
|
vcc->vflags |= HE_VCC_RX_CLOSING;
|
|
vcc->vflags &= ~HE_VCC_RX_OPEN;
|
|
}
|