eed4bd22ad
Most affect comments, very few have user-visible effects.
935 lines
24 KiB
C
935 lines
24 KiB
C
/*-
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* Copyright (c) 2004
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* Doug Rabson
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* Copyright (c) 2002-2003
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* Hidetoshi Shimokawa. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifdef HAVE_KERNEL_OPTION_HEADERS
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#include "opt_device_polling.h"
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#include "opt_inet.h"
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#endif
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/taskqueue.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/firewire.h>
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#include <net/if_arp.h>
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#include <net/if_types.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/firewirereg.h>
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#include <dev/firewire/iec13213.h>
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#include <dev/firewire/if_fwipvar.h>
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/*
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* We really need a mechanism for allocating regions in the FIFO
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* address space. We pick a address in the OHCI controller's 'middle'
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* address space. This means that the controller will automatically
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* send responses for us, which is fine since we don't have any
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* important information to put in the response anyway.
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*/
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#define INET_FIFO 0xfffe00000000LL
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#define FWIPDEBUG if (fwipdebug) if_printf
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#define TX_MAX_QUEUE (FWMAXQUEUE - 1)
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/* network interface */
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static void fwip_start (struct ifnet *);
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static int fwip_ioctl (struct ifnet *, u_long, caddr_t);
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static void fwip_init (void *);
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static void fwip_post_busreset (void *);
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static void fwip_output_callback (struct fw_xfer *);
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static void fwip_async_output (struct fwip_softc *, struct ifnet *);
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static void fwip_start_send (void *, int);
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static void fwip_stream_input (struct fw_xferq *);
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static void fwip_unicast_input(struct fw_xfer *);
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static int fwipdebug = 0;
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static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */
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static int tx_speed = 2;
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static int rx_queue_len = FWMAXQUEUE;
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static MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface");
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SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, "");
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SYSCTL_DECL(_hw_firewire);
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static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0,
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"Firewire ip subsystem");
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SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len,
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0, "Length of the receive queue");
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#ifdef DEVICE_POLLING
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static poll_handler_t fwip_poll;
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static int
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fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
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{
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struct fwip_softc *fwip;
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struct firewire_comm *fc;
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if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
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return (0);
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fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip;
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fc = fwip->fd.fc;
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fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
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return (0);
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}
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#endif /* DEVICE_POLLING */
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static void
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fwip_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent));
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}
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static int
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fwip_probe(device_t dev)
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{
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device_t pa;
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pa = device_get_parent(dev);
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if (device_get_unit(dev) != device_get_unit(pa)) {
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return (ENXIO);
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}
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device_set_desc(dev, "IP over FireWire");
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return (0);
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}
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static int
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fwip_attach(device_t dev)
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{
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struct fwip_softc *fwip;
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struct ifnet *ifp;
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int unit, s;
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struct fw_hwaddr *hwaddr;
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fwip = ((struct fwip_softc *)device_get_softc(dev));
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unit = device_get_unit(dev);
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ifp = fwip->fw_softc.fwip_ifp = if_alloc(IFT_IEEE1394);
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if (ifp == NULL)
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return (ENOSPC);
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mtx_init(&fwip->mtx, "fwip", NULL, MTX_DEF);
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/* XXX */
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fwip->dma_ch = -1;
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fwip->fd.fc = device_get_ivars(dev);
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if (tx_speed < 0)
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tx_speed = fwip->fd.fc->speed;
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fwip->fd.dev = dev;
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fwip->fd.post_explore = NULL;
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fwip->fd.post_busreset = fwip_post_busreset;
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fwip->fw_softc.fwip = fwip;
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TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip);
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/*
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* Encode our hardware the way that arp likes it.
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*/
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hwaddr = &IFP2FWC(fwip->fw_softc.fwip_ifp)->fc_hwaddr;
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hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi);
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hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo);
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hwaddr->sender_max_rec = fwip->fd.fc->maxrec;
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hwaddr->sspd = fwip->fd.fc->speed;
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hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32));
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hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO);
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/* fill the rest and attach interface */
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ifp->if_softc = &fwip->fw_softc;
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if_initname(ifp, device_get_name(dev), unit);
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ifp->if_init = fwip_init;
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ifp->if_start = fwip_start;
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ifp->if_ioctl = fwip_ioctl;
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ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
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ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
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#ifdef DEVICE_POLLING
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ifp->if_capabilities |= IFCAP_POLLING;
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#endif
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s = splimp();
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firewire_ifattach(ifp, hwaddr);
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splx(s);
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FWIPDEBUG(ifp, "interface created\n");
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return 0;
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}
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static void
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fwip_stop(struct fwip_softc *fwip)
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{
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struct firewire_comm *fc;
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struct fw_xferq *xferq;
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struct ifnet *ifp = fwip->fw_softc.fwip_ifp;
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struct fw_xfer *xfer, *next;
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int i;
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fc = fwip->fd.fc;
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if (fwip->dma_ch >= 0) {
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xferq = fc->ir[fwip->dma_ch];
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if (xferq->flag & FWXFERQ_RUNNING)
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fc->irx_disable(fc, fwip->dma_ch);
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xferq->flag &=
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~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
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FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
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xferq->hand = NULL;
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for (i = 0; i < xferq->bnchunk; i++)
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m_freem(xferq->bulkxfer[i].mbuf);
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free(xferq->bulkxfer, M_FWIP);
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fw_bindremove(fc, &fwip->fwb);
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for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL;
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xfer = next) {
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next = STAILQ_NEXT(xfer, link);
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fw_xfer_free(xfer);
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}
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for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL;
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xfer = next) {
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next = STAILQ_NEXT(xfer, link);
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fw_xfer_free(xfer);
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}
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STAILQ_INIT(&fwip->xferlist);
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xferq->bulkxfer = NULL;
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fwip->dma_ch = -1;
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}
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ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
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}
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static int
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fwip_detach(device_t dev)
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{
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struct fwip_softc *fwip;
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struct ifnet *ifp;
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int s;
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fwip = (struct fwip_softc *)device_get_softc(dev);
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ifp = fwip->fw_softc.fwip_ifp;
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#ifdef DEVICE_POLLING
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if (ifp->if_capenable & IFCAP_POLLING)
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ether_poll_deregister(ifp);
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#endif
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s = splimp();
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fwip_stop(fwip);
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firewire_ifdetach(ifp);
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if_free(ifp);
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mtx_destroy(&fwip->mtx);
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splx(s);
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return 0;
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}
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static void
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fwip_init(void *arg)
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{
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struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip;
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struct firewire_comm *fc;
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struct ifnet *ifp = fwip->fw_softc.fwip_ifp;
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struct fw_xferq *xferq;
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struct fw_xfer *xfer;
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struct mbuf *m;
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int i;
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FWIPDEBUG(ifp, "initializing\n");
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fc = fwip->fd.fc;
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#define START 0
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if (fwip->dma_ch < 0) {
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fwip->dma_ch = fw_open_isodma(fc, /* tx */0);
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if (fwip->dma_ch < 0)
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return;
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xferq = fc->ir[fwip->dma_ch];
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xferq->flag |= FWXFERQ_EXTBUF |
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FWXFERQ_HANDLER | FWXFERQ_STREAM;
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xferq->flag &= ~0xff;
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xferq->flag |= broadcast_channel & 0xff;
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/* register fwip_input handler */
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xferq->sc = (caddr_t) fwip;
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xferq->hand = fwip_stream_input;
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xferq->bnchunk = rx_queue_len;
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xferq->bnpacket = 1;
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xferq->psize = MCLBYTES;
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xferq->queued = 0;
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xferq->buf = NULL;
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xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
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sizeof(struct fw_bulkxfer) * xferq->bnchunk,
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M_FWIP, M_WAITOK);
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if (xferq->bulkxfer == NULL) {
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printf("if_fwip: malloc failed\n");
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return;
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}
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STAILQ_INIT(&xferq->stvalid);
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STAILQ_INIT(&xferq->stfree);
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STAILQ_INIT(&xferq->stdma);
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xferq->stproc = NULL;
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for (i = 0; i < xferq->bnchunk; i++) {
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m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
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xferq->bulkxfer[i].mbuf = m;
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m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
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STAILQ_INSERT_TAIL(&xferq->stfree,
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&xferq->bulkxfer[i], link);
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}
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fwip->fwb.start = INET_FIFO;
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fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */
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/* pre-allocate xfer */
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STAILQ_INIT(&fwip->fwb.xferlist);
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for (i = 0; i < rx_queue_len; i++) {
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xfer = fw_xfer_alloc(M_FWIP);
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if (xfer == NULL)
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break;
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m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
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xfer->recv.payload = mtod(m, uint32_t *);
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xfer->recv.pay_len = MCLBYTES;
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xfer->hand = fwip_unicast_input;
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xfer->fc = fc;
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xfer->sc = (caddr_t)fwip;
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xfer->mbuf = m;
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STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link);
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}
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fw_bindadd(fc, &fwip->fwb);
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STAILQ_INIT(&fwip->xferlist);
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for (i = 0; i < TX_MAX_QUEUE; i++) {
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xfer = fw_xfer_alloc(M_FWIP);
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if (xfer == NULL)
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break;
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xfer->send.spd = tx_speed;
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xfer->fc = fwip->fd.fc;
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xfer->sc = (caddr_t)fwip;
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xfer->hand = fwip_output_callback;
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STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link);
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}
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} else
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xferq = fc->ir[fwip->dma_ch];
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fwip->last_dest.hi = 0;
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fwip->last_dest.lo = 0;
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/* start dma */
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if ((xferq->flag & FWXFERQ_RUNNING) == 0)
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fc->irx_enable(fc, fwip->dma_ch);
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ifp->if_drv_flags |= IFF_DRV_RUNNING;
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ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
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#if 0
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/* attempt to start output */
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fwip_start(ifp);
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#endif
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}
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static int
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fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip;
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int s, error;
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switch (cmd) {
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case SIOCSIFFLAGS:
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s = splimp();
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if (ifp->if_flags & IFF_UP) {
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if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
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fwip_init(&fwip->fw_softc);
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} else {
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if (ifp->if_drv_flags & IFF_DRV_RUNNING)
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fwip_stop(fwip);
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}
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splx(s);
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break;
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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break;
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case SIOCSIFCAP:
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#ifdef DEVICE_POLLING
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{
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struct ifreq *ifr = (struct ifreq *) data;
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struct firewire_comm *fc = fwip->fd.fc;
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if (ifr->ifr_reqcap & IFCAP_POLLING &&
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!(ifp->if_capenable & IFCAP_POLLING)) {
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error = ether_poll_register(fwip_poll, ifp);
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if (error)
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return (error);
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/* Disable interrupts */
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fc->set_intr(fc, 0);
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ifp->if_capenable |= IFCAP_POLLING |
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IFCAP_POLLING_NOCOUNT;
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return (error);
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}
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if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
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ifp->if_capenable & IFCAP_POLLING) {
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error = ether_poll_deregister(ifp);
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/* Enable interrupts. */
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fc->set_intr(fc, 1);
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ifp->if_capenable &= ~IFCAP_POLLING;
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ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT;
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return (error);
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}
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}
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#endif /* DEVICE_POLLING */
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break;
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default:
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s = splimp();
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error = firewire_ioctl(ifp, cmd, data);
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splx(s);
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return (error);
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}
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return (0);
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}
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static void
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fwip_post_busreset(void *arg)
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{
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struct fwip_softc *fwip = arg;
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struct crom_src *src;
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struct crom_chunk *root;
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src = fwip->fd.fc->crom_src;
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root = fwip->fd.fc->crom_root;
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/* RFC2734 IPv4 over IEEE1394 */
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bzero(&fwip->unit4, sizeof(struct crom_chunk));
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crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR);
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crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF);
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crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA");
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crom_add_entry(&fwip->unit4, CSRKEY_VER, 1);
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crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4");
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/* RFC3146 IPv6 over IEEE1394 */
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bzero(&fwip->unit6, sizeof(struct crom_chunk));
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crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR);
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crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF);
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crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA");
|
|
crom_add_entry(&fwip->unit6, CSRKEY_VER, 2);
|
|
crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6");
|
|
|
|
fwip->last_dest.hi = 0;
|
|
fwip->last_dest.lo = 0;
|
|
firewire_busreset(fwip->fw_softc.fwip_ifp);
|
|
}
|
|
|
|
static void
|
|
fwip_output_callback(struct fw_xfer *xfer)
|
|
{
|
|
struct fwip_softc *fwip;
|
|
struct ifnet *ifp;
|
|
int s;
|
|
|
|
fwip = (struct fwip_softc *)xfer->sc;
|
|
ifp = fwip->fw_softc.fwip_ifp;
|
|
/* XXX error check */
|
|
FWIPDEBUG(ifp, "resp = %d\n", xfer->resp);
|
|
if (xfer->resp != 0)
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
m_freem(xfer->mbuf);
|
|
fw_xfer_unload(xfer);
|
|
|
|
s = splimp();
|
|
FWIP_LOCK(fwip);
|
|
STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link);
|
|
FWIP_UNLOCK(fwip);
|
|
splx(s);
|
|
|
|
/* for queue full */
|
|
if (ifp->if_snd.ifq_head != NULL) {
|
|
fwip_start(ifp);
|
|
}
|
|
}
|
|
|
|
static void
|
|
fwip_start(struct ifnet *ifp)
|
|
{
|
|
struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip;
|
|
int s;
|
|
|
|
FWIPDEBUG(ifp, "starting\n");
|
|
|
|
if (fwip->dma_ch < 0) {
|
|
struct mbuf *m = NULL;
|
|
|
|
FWIPDEBUG(ifp, "not ready\n");
|
|
|
|
s = splimp();
|
|
do {
|
|
IF_DEQUEUE(&ifp->if_snd, m);
|
|
if (m != NULL)
|
|
m_freem(m);
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
} while (m != NULL);
|
|
splx(s);
|
|
|
|
return;
|
|
}
|
|
|
|
s = splimp();
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
|
|
if (ifp->if_snd.ifq_len != 0)
|
|
fwip_async_output(fwip, ifp);
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
splx(s);
|
|
}
|
|
|
|
/* Async. stream output */
|
|
static void
|
|
fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp)
|
|
{
|
|
struct firewire_comm *fc = fwip->fd.fc;
|
|
struct mbuf *m;
|
|
struct m_tag *mtag;
|
|
struct fw_hwaddr *destfw;
|
|
struct fw_xfer *xfer;
|
|
struct fw_xferq *xferq;
|
|
struct fw_pkt *fp;
|
|
uint16_t nodeid;
|
|
int error;
|
|
int i = 0;
|
|
|
|
xfer = NULL;
|
|
xferq = fc->atq;
|
|
while ((xferq->queued < xferq->maxq - 1) &&
|
|
(ifp->if_snd.ifq_head != NULL)) {
|
|
FWIP_LOCK(fwip);
|
|
xfer = STAILQ_FIRST(&fwip->xferlist);
|
|
if (xfer == NULL) {
|
|
FWIP_UNLOCK(fwip);
|
|
#if 0
|
|
printf("if_fwip: lack of xfer\n");
|
|
#endif
|
|
break;
|
|
}
|
|
STAILQ_REMOVE_HEAD(&fwip->xferlist, link);
|
|
FWIP_UNLOCK(fwip);
|
|
|
|
IF_DEQUEUE(&ifp->if_snd, m);
|
|
if (m == NULL) {
|
|
FWIP_LOCK(fwip);
|
|
STAILQ_INSERT_HEAD(&fwip->xferlist, xfer, link);
|
|
FWIP_UNLOCK(fwip);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Dig out the link-level address which
|
|
* firewire_output got via arp or neighbour
|
|
* discovery. If we don't have a link-level address,
|
|
* just stick the thing on the broadcast channel.
|
|
*/
|
|
mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0);
|
|
if (mtag == NULL)
|
|
destfw = 0;
|
|
else
|
|
destfw = (struct fw_hwaddr *) (mtag + 1);
|
|
|
|
|
|
/*
|
|
* We don't do any bpf stuff here - the generic code
|
|
* in firewire_output gives the packet to bpf before
|
|
* it adds the link-level encapsulation.
|
|
*/
|
|
|
|
/*
|
|
* Put the mbuf in the xfer early in case we hit an
|
|
* error case below - fwip_output_callback will free
|
|
* the mbuf.
|
|
*/
|
|
xfer->mbuf = m;
|
|
|
|
/*
|
|
* We use the arp result (if any) to add a suitable firewire
|
|
* packet header before handing off to the bus.
|
|
*/
|
|
fp = &xfer->send.hdr;
|
|
nodeid = FWLOCALBUS | fc->nodeid;
|
|
if ((m->m_flags & M_BCAST) || !destfw) {
|
|
/*
|
|
* Broadcast packets are sent as GASP packets with
|
|
* specifier ID 0x00005e, version 1 on the broadcast
|
|
* channel. To be conservative, we send at the
|
|
* slowest possible speed.
|
|
*/
|
|
uint32_t *p;
|
|
|
|
M_PREPEND(m, 2*sizeof(uint32_t), M_NOWAIT);
|
|
p = mtod(m, uint32_t *);
|
|
fp->mode.stream.len = m->m_pkthdr.len;
|
|
fp->mode.stream.chtag = broadcast_channel;
|
|
fp->mode.stream.tcode = FWTCODE_STREAM;
|
|
fp->mode.stream.sy = 0;
|
|
xfer->send.spd = 0;
|
|
p[0] = htonl(nodeid << 16);
|
|
p[1] = htonl((0x5e << 24) | 1);
|
|
} else {
|
|
/*
|
|
* Unicast packets are sent as block writes to the
|
|
* target's unicast fifo address. If we can't
|
|
* find the node address, we just give up. We
|
|
* could broadcast it but that might overflow
|
|
* the packet size limitations due to the
|
|
* extra GASP header. Note: the hardware
|
|
* address is stored in network byte order to
|
|
* make life easier for ARP.
|
|
*/
|
|
struct fw_device *fd;
|
|
struct fw_eui64 eui;
|
|
|
|
eui.hi = ntohl(destfw->sender_unique_ID_hi);
|
|
eui.lo = ntohl(destfw->sender_unique_ID_lo);
|
|
if (fwip->last_dest.hi != eui.hi ||
|
|
fwip->last_dest.lo != eui.lo) {
|
|
fd = fw_noderesolve_eui64(fc, &eui);
|
|
if (!fd) {
|
|
/* error */
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
/* XXX set error code */
|
|
fwip_output_callback(xfer);
|
|
continue;
|
|
|
|
}
|
|
fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst;
|
|
fwip->last_hdr.mode.wreqb.tlrt = 0;
|
|
fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB;
|
|
fwip->last_hdr.mode.wreqb.pri = 0;
|
|
fwip->last_hdr.mode.wreqb.src = nodeid;
|
|
fwip->last_hdr.mode.wreqb.dest_hi =
|
|
ntohs(destfw->sender_unicast_FIFO_hi);
|
|
fwip->last_hdr.mode.wreqb.dest_lo =
|
|
ntohl(destfw->sender_unicast_FIFO_lo);
|
|
fwip->last_hdr.mode.wreqb.extcode = 0;
|
|
fwip->last_dest = eui;
|
|
}
|
|
|
|
fp->mode.wreqb = fwip->last_hdr.mode.wreqb;
|
|
fp->mode.wreqb.len = m->m_pkthdr.len;
|
|
xfer->send.spd = min(destfw->sspd, fc->speed);
|
|
}
|
|
|
|
xfer->send.pay_len = m->m_pkthdr.len;
|
|
|
|
error = fw_asyreq(fc, -1, xfer);
|
|
if (error == EAGAIN) {
|
|
/*
|
|
* We ran out of tlabels - requeue the packet
|
|
* for later transmission.
|
|
*/
|
|
xfer->mbuf = 0;
|
|
FWIP_LOCK(fwip);
|
|
STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link);
|
|
FWIP_UNLOCK(fwip);
|
|
IF_PREPEND(&ifp->if_snd, m);
|
|
break;
|
|
}
|
|
if (error) {
|
|
/* error */
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
/* XXX set error code */
|
|
fwip_output_callback(xfer);
|
|
continue;
|
|
} else {
|
|
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
|
|
i++;
|
|
}
|
|
}
|
|
#if 0
|
|
if (i > 1)
|
|
printf("%d queued\n", i);
|
|
#endif
|
|
if (i > 0)
|
|
xferq->start(fc);
|
|
}
|
|
|
|
static void
|
|
fwip_start_send (void *arg, int count)
|
|
{
|
|
struct fwip_softc *fwip = arg;
|
|
|
|
fwip->fd.fc->atq->start(fwip->fd.fc);
|
|
}
|
|
|
|
/* Async. stream output */
|
|
static void
|
|
fwip_stream_input(struct fw_xferq *xferq)
|
|
{
|
|
struct mbuf *m, *m0;
|
|
struct m_tag *mtag;
|
|
struct ifnet *ifp;
|
|
struct fwip_softc *fwip;
|
|
struct fw_bulkxfer *sxfer;
|
|
struct fw_pkt *fp;
|
|
uint16_t src;
|
|
uint32_t *p;
|
|
|
|
|
|
fwip = (struct fwip_softc *)xferq->sc;
|
|
ifp = fwip->fw_softc.fwip_ifp;
|
|
|
|
while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
|
|
STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
|
|
fp = mtod(sxfer->mbuf, struct fw_pkt *);
|
|
if (fwip->fd.fc->irx_post != NULL)
|
|
fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld);
|
|
m = sxfer->mbuf;
|
|
|
|
/* insert new rbuf */
|
|
sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
|
|
if (m0 != NULL) {
|
|
m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
|
|
STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
|
|
} else
|
|
printf("fwip_as_input: m_getcl failed\n");
|
|
|
|
/*
|
|
* We must have a GASP header - leave the
|
|
* encapsulation sanity checks to the generic
|
|
* code. Remember that we also have the firewire async
|
|
* stream header even though that isn't accounted for
|
|
* in mode.stream.len.
|
|
*/
|
|
if (sxfer->resp != 0 || fp->mode.stream.len <
|
|
2*sizeof(uint32_t)) {
|
|
m_freem(m);
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
continue;
|
|
}
|
|
m->m_len = m->m_pkthdr.len = fp->mode.stream.len
|
|
+ sizeof(fp->mode.stream);
|
|
|
|
/*
|
|
* If we received the packet on the broadcast channel,
|
|
* mark it as broadcast, otherwise we assume it must
|
|
* be multicast.
|
|
*/
|
|
if (fp->mode.stream.chtag == broadcast_channel)
|
|
m->m_flags |= M_BCAST;
|
|
else
|
|
m->m_flags |= M_MCAST;
|
|
|
|
/*
|
|
* Make sure we recognise the GASP specifier and
|
|
* version.
|
|
*/
|
|
p = mtod(m, uint32_t *);
|
|
if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e
|
|
|| (ntohl(p[2]) & 0xffffff) != 1) {
|
|
FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n",
|
|
ntohl(p[1]), ntohl(p[2]));
|
|
m_freem(m);
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Record the sender ID for possible BPF usage.
|
|
*/
|
|
src = ntohl(p[1]) >> 16;
|
|
if (bpf_peers_present(ifp->if_bpf)) {
|
|
mtag = m_tag_alloc(MTAG_FIREWIRE,
|
|
MTAG_FIREWIRE_SENDER_EUID,
|
|
2*sizeof(uint32_t), M_NOWAIT);
|
|
if (mtag) {
|
|
/* bpf wants it in network byte order */
|
|
struct fw_device *fd;
|
|
uint32_t *p = (uint32_t *) (mtag + 1);
|
|
fd = fw_noderesolve_nodeid(fwip->fd.fc,
|
|
src & 0x3f);
|
|
if (fd) {
|
|
p[0] = htonl(fd->eui.hi);
|
|
p[1] = htonl(fd->eui.lo);
|
|
} else {
|
|
p[0] = 0;
|
|
p[1] = 0;
|
|
}
|
|
m_tag_prepend(m, mtag);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Trim off the GASP header
|
|
*/
|
|
m_adj(m, 3*sizeof(uint32_t));
|
|
m->m_pkthdr.rcvif = ifp;
|
|
firewire_input(ifp, m, src);
|
|
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
|
}
|
|
if (STAILQ_FIRST(&xferq->stfree) != NULL)
|
|
fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch);
|
|
}
|
|
|
|
static __inline void
|
|
fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
/*
|
|
* We have finished with a unicast xfer. Allocate a new
|
|
* cluster and stick it on the back of the input queue.
|
|
*/
|
|
m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
|
|
xfer->mbuf = m;
|
|
xfer->recv.payload = mtod(m, uint32_t *);
|
|
xfer->recv.pay_len = MCLBYTES;
|
|
xfer->mbuf = m;
|
|
STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link);
|
|
}
|
|
|
|
static void
|
|
fwip_unicast_input(struct fw_xfer *xfer)
|
|
{
|
|
uint64_t address;
|
|
struct mbuf *m;
|
|
struct m_tag *mtag;
|
|
struct ifnet *ifp;
|
|
struct fwip_softc *fwip;
|
|
struct fw_pkt *fp;
|
|
//struct fw_pkt *sfp;
|
|
int rtcode;
|
|
|
|
fwip = (struct fwip_softc *)xfer->sc;
|
|
ifp = fwip->fw_softc.fwip_ifp;
|
|
m = xfer->mbuf;
|
|
xfer->mbuf = 0;
|
|
fp = &xfer->recv.hdr;
|
|
|
|
/*
|
|
* Check the fifo address - we only accept addresses of
|
|
* exactly INET_FIFO.
|
|
*/
|
|
address = ((uint64_t)fp->mode.wreqb.dest_hi << 32)
|
|
| fp->mode.wreqb.dest_lo;
|
|
if (fp->mode.wreqb.tcode != FWTCODE_WREQB) {
|
|
rtcode = FWRCODE_ER_TYPE;
|
|
} else if (address != INET_FIFO) {
|
|
rtcode = FWRCODE_ER_ADDR;
|
|
} else {
|
|
rtcode = FWRCODE_COMPLETE;
|
|
}
|
|
|
|
/*
|
|
* Pick up a new mbuf and stick it on the back of the receive
|
|
* queue.
|
|
*/
|
|
fwip_unicast_input_recycle(fwip, xfer);
|
|
|
|
/*
|
|
* If we've already rejected the packet, give up now.
|
|
*/
|
|
if (rtcode != FWRCODE_COMPLETE) {
|
|
m_freem(m);
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
|
|
if (bpf_peers_present(ifp->if_bpf)) {
|
|
/*
|
|
* Record the sender ID for possible BPF usage.
|
|
*/
|
|
mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID,
|
|
2*sizeof(uint32_t), M_NOWAIT);
|
|
if (mtag) {
|
|
/* bpf wants it in network byte order */
|
|
struct fw_device *fd;
|
|
uint32_t *p = (uint32_t *) (mtag + 1);
|
|
fd = fw_noderesolve_nodeid(fwip->fd.fc,
|
|
fp->mode.wreqb.src & 0x3f);
|
|
if (fd) {
|
|
p[0] = htonl(fd->eui.hi);
|
|
p[1] = htonl(fd->eui.lo);
|
|
} else {
|
|
p[0] = 0;
|
|
p[1] = 0;
|
|
}
|
|
m_tag_prepend(m, mtag);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Hand off to the generic encapsulation code. We don't use
|
|
* ifp->if_input so that we can pass the source nodeid as an
|
|
* argument to facilitate link-level fragment reassembly.
|
|
*/
|
|
m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len;
|
|
m->m_pkthdr.rcvif = ifp;
|
|
firewire_input(ifp, m, fp->mode.wreqb.src);
|
|
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
|
}
|
|
|
|
static devclass_t fwip_devclass;
|
|
|
|
static device_method_t fwip_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_identify, fwip_identify),
|
|
DEVMETHOD(device_probe, fwip_probe),
|
|
DEVMETHOD(device_attach, fwip_attach),
|
|
DEVMETHOD(device_detach, fwip_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t fwip_driver = {
|
|
"fwip",
|
|
fwip_methods,
|
|
sizeof(struct fwip_softc),
|
|
};
|
|
|
|
|
|
DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0);
|
|
MODULE_VERSION(fwip, 1);
|
|
MODULE_DEPEND(fwip, firewire, 1, 1, 1);
|