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BSD 4_3_Tahoe release
[unix-history] / usr / src / sys / vaxif / if_de.c
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)if_de.c 7.4 (Berkeley) 5/26/88
*/
#include "de.h"
#if NDE > 0
/*
* DEC DEUNA interface
*
* Lou Salkind
* New York University
*
* TODO:
* timeout routine (get statistics)
*/
#include "../machine/pte.h"
#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "buf.h"
#include "protosw.h"
#include "socket.h"
#include "vmmac.h"
#include "ioctl.h"
#include "errno.h"
#include "syslog.h"
#include "../net/if.h"
#include "../net/netisr.h"
#include "../net/route.h"
#ifdef INET
#include "../netinet/in.h"
#include "../netinet/in_systm.h"
#include "../netinet/in_var.h"
#include "../netinet/ip.h"
#include "../netinet/if_ether.h"
#endif
#ifdef NS
#include "../netns/ns.h"
#include "../netns/ns_if.h"
#endif
#include "../vax/cpu.h"
#include "../vax/mtpr.h"
#include "if_dereg.h"
#include "if_uba.h"
#include "../vaxuba/ubareg.h"
#include "../vaxuba/ubavar.h"
#define NXMT 3 /* number of transmit buffers */
#define NRCV 7 /* number of receive buffers (must be > 1) */
int dedebug = 0;
int deprobe(), deattach(), deintr();
struct uba_device *deinfo[NDE];
u_short destd[] = { 0 };
struct uba_driver dedriver =
{ deprobe, 0, deattach, 0, destd, "de", deinfo };
int deinit(),deoutput(),deioctl(),dereset();
/*
* Ethernet software status per interface.
*
* Each interface is referenced by a network interface structure,
* ds_if, which the routing code uses to locate the interface.
* This structure contains the output queue for the interface, its address, ...
* We also have, for each interface, a UBA interface structure, which
* contains information about the UNIBUS resources held by the interface:
* map registers, buffered data paths, etc. Information is cached in this
* structure for use by the if_uba.c routines in running the interface
* efficiently.
*/
struct de_softc {
struct arpcom ds_ac; /* Ethernet common part */
#define ds_if ds_ac.ac_if /* network-visible interface */
#define ds_addr ds_ac.ac_enaddr /* hardware Ethernet address */
int ds_flags;
#define DSF_LOCK 1 /* lock out destart */
#define DSF_RUNNING 2 /* board is enabled */
#define DSF_SETADDR 4 /* physical address is changed */
int ds_ubaddr; /* map info for incore structs */
struct ifubinfo ds_deuba; /* unibus resource structure */
struct ifrw ds_ifr[NRCV]; /* unibus receive maps */
struct ifxmt ds_ifw[NXMT]; /* unibus xmt maps */
/* the following structures are always mapped in */
struct de_pcbb ds_pcbb; /* port control block */
struct de_ring ds_xrent[NXMT]; /* transmit ring entrys */
struct de_ring ds_rrent[NRCV]; /* receive ring entrys */
struct de_udbbuf ds_udbbuf; /* UNIBUS data buffer */
/* end mapped area */
#define INCORE_BASE(p) ((char *)&(p)->ds_pcbb)
#define RVAL_OFF(n) ((char *)&de_softc[0].n - INCORE_BASE(&de_softc[0]))
#define LVAL_OFF(n) ((char *)de_softc[0].n - INCORE_BASE(&de_softc[0]))
#define PCBB_OFFSET RVAL_OFF(ds_pcbb)
#define XRENT_OFFSET LVAL_OFF(ds_xrent)
#define RRENT_OFFSET LVAL_OFF(ds_rrent)
#define UDBBUF_OFFSET RVAL_OFF(ds_udbbuf)
#define INCORE_SIZE RVAL_OFF(ds_xindex)
int ds_xindex; /* UNA index into transmit chain */
int ds_rindex; /* UNA index into receive chain */
int ds_xfree; /* index for next transmit buffer */
int ds_nxmit; /* # of transmits in progress */
} de_softc[NDE];
deprobe(reg)
caddr_t reg;
{
register int br, cvec; /* r11, r10 value-result */
register struct dedevice *addr = (struct dedevice *)reg;
register i;
#ifdef lint
br = 0; cvec = br; br = cvec;
i = 0; derint(i); deintr(i);
#endif
/*
* Make sure self-test is finished before we screw with the board.
* Self-test on a DELUA can take 15 seconds (argh).
*/
for (i = 0;
i < 160 &&
(addr->pcsr0 & PCSR0_FATI) == 0 &&
(addr->pcsr1 & PCSR1_STMASK) == STAT_RESET;
++i)
DELAY(100000);
if ((addr->pcsr0 & PCSR0_FATI) != 0 ||
(addr->pcsr1 & PCSR1_STMASK) != STAT_READY)
return(0);
addr->pcsr0 = 0;
DELAY(100);
addr->pcsr0 = PCSR0_RSET;
while ((addr->pcsr0 & PCSR0_INTR) == 0)
;
/* make board interrupt by executing a GETPCBB command */
addr->pcsr0 = PCSR0_INTE;
addr->pcsr2 = 0;
addr->pcsr3 = 0;
addr->pcsr0 = PCSR0_INTE|CMD_GETPCBB;
DELAY(100000);
return(1);
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets. We get the ethernet address here.
*/
deattach(ui)
struct uba_device *ui;
{
register struct de_softc *ds = &de_softc[ui->ui_unit];
register struct ifnet *ifp = &ds->ds_if;
register struct dedevice *addr = (struct dedevice *)ui->ui_addr;
int csr1;
ifp->if_unit = ui->ui_unit;
ifp->if_name = "de";
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST;
/*
* What kind of a board is this?
* The error bits 4-6 in pcsr1 are a device id as long as
* the high byte is zero.
*/
csr1 = addr->pcsr1;
if (csr1 & 0xff60)
printf("de%d: broken\n", ui->ui_unit);
else if (csr1 & 0x10)
printf("de%d: delua\n", ui->ui_unit);
else
printf("de%d: deuna\n", ui->ui_unit);
/*
* Reset the board and temporarily map
* the pcbb buffer onto the Unibus.
*/
addr->pcsr0 = 0; /* reset INTE */
DELAY(100);
addr->pcsr0 = PCSR0_RSET;
(void)dewait(ui, "reset");
ds->ds_ubaddr = uballoc(ui->ui_ubanum, (char *)&ds->ds_pcbb,
sizeof (struct de_pcbb), 0);
addr->pcsr2 = ds->ds_ubaddr & 0xffff;
addr->pcsr3 = (ds->ds_ubaddr >> 16) & 0x3;
addr->pclow = CMD_GETPCBB;
(void)dewait(ui, "pcbb");
ds->ds_pcbb.pcbb0 = FC_RDPHYAD;
addr->pclow = CMD_GETCMD;
(void)dewait(ui, "read addr ");
ubarelse(ui->ui_ubanum, &ds->ds_ubaddr);
bcopy((caddr_t)&ds->ds_pcbb.pcbb2, (caddr_t)ds->ds_addr,
sizeof (ds->ds_addr));
printf("de%d: hardware address %s\n", ui->ui_unit,
ether_sprintf(ds->ds_addr));
ifp->if_init = deinit;
ifp->if_output = deoutput;
ifp->if_ioctl = deioctl;
ifp->if_reset = dereset;
ds->ds_deuba.iff_flags = UBA_CANTWAIT;
#ifdef notdef
/* CAN WE USE BDP's ??? */
ds->ds_deuba.iff_flags |= UBA_NEEDBDP;
#endif
if_attach(ifp);
}
/*
* Reset of interface after UNIBUS reset.
* If interface is on specified uba, reset its state.
*/
dereset(unit, uban)
int unit, uban;
{
register struct uba_device *ui;
if (unit >= NDE || (ui = deinfo[unit]) == 0 || ui->ui_alive == 0 ||
ui->ui_ubanum != uban)
return;
printf(" de%d", unit);
de_softc[unit].ds_if.if_flags &= ~IFF_RUNNING;
de_softc[unit].ds_flags &= ~(DSF_LOCK | DSF_RUNNING);
((struct dedevice *)ui->ui_addr)->pcsr0 = PCSR0_RSET;
(void)dewait(ui, "reset");
deinit(unit);
}
/*
* Initialization of interface; clear recorded pending
* operations, and reinitialize UNIBUS usage.
*/
deinit(unit)
int unit;
{
register struct de_softc *ds = &de_softc[unit];
register struct uba_device *ui = deinfo[unit];
register struct dedevice *addr;
register struct ifrw *ifrw;
register struct ifxmt *ifxp;
struct ifnet *ifp = &ds->ds_if;
int s;
struct de_ring *rp;
int incaddr;
/* not yet, if address still unknown */
if (ifp->if_addrlist == (struct ifaddr *)0)
return;
if (ds->ds_flags & DSF_RUNNING)
return;
if ((ifp->if_flags & IFF_RUNNING) == 0) {
if (if_ubaminit(&ds->ds_deuba, ui->ui_ubanum,
sizeof (struct ether_header), (int)btoc(ETHERMTU),
ds->ds_ifr, NRCV, ds->ds_ifw, NXMT) == 0) {
printf("de%d: can't initialize\n", unit);
ds->ds_if.if_flags &= ~IFF_UP;
return;
}
ds->ds_ubaddr = uballoc(ui->ui_ubanum, INCORE_BASE(ds),
INCORE_SIZE, 0);
}
addr = (struct dedevice *)ui->ui_addr;
/* set the pcbb block address */
incaddr = ds->ds_ubaddr + PCBB_OFFSET;
addr->pcsr2 = incaddr & 0xffff;
addr->pcsr3 = (incaddr >> 16) & 0x3;
addr->pclow = 0; /* reset INTE */
DELAY(100);
addr->pclow = CMD_GETPCBB;
(void)dewait(ui, "pcbb");
/* set the transmit and receive ring header addresses */
incaddr = ds->ds_ubaddr + UDBBUF_OFFSET;
ds->ds_pcbb.pcbb0 = FC_WTRING;
ds->ds_pcbb.pcbb2 = incaddr & 0xffff;
ds->ds_pcbb.pcbb4 = (incaddr >> 16) & 0x3;
incaddr = ds->ds_ubaddr + XRENT_OFFSET;
ds->ds_udbbuf.b_tdrbl = incaddr & 0xffff;
ds->ds_udbbuf.b_tdrbh = (incaddr >> 16) & 0x3;
ds->ds_udbbuf.b_telen = sizeof (struct de_ring) / sizeof (short);
ds->ds_udbbuf.b_trlen = NXMT;
incaddr = ds->ds_ubaddr + RRENT_OFFSET;
ds->ds_udbbuf.b_rdrbl = incaddr & 0xffff;
ds->ds_udbbuf.b_rdrbh = (incaddr >> 16) & 0x3;
ds->ds_udbbuf.b_relen = sizeof (struct de_ring) / sizeof (short);
ds->ds_udbbuf.b_rrlen = NRCV;
addr->pclow = CMD_GETCMD;
(void)dewait(ui, "wtring");
/* initialize the mode - enable hardware padding */
ds->ds_pcbb.pcbb0 = FC_WTMODE;
/* let hardware do padding - set MTCH bit on broadcast */
ds->ds_pcbb.pcbb2 = MOD_TPAD|MOD_HDX;
addr->pclow = CMD_GETCMD;
(void)dewait(ui, "wtmode");
/* set up the receive and transmit ring entries */
ifxp = &ds->ds_ifw[0];
for (rp = &ds->ds_xrent[0]; rp < &ds->ds_xrent[NXMT]; rp++) {
rp->r_segbl = ifxp->ifw_info & 0xffff;
rp->r_segbh = (ifxp->ifw_info >> 16) & 0x3;
rp->r_flags = 0;
ifxp++;
}
ifrw = &ds->ds_ifr[0];
for (rp = &ds->ds_rrent[0]; rp < &ds->ds_rrent[NRCV]; rp++) {
rp->r_slen = sizeof (struct de_buf);
rp->r_segbl = ifrw->ifrw_info & 0xffff;
rp->r_segbh = (ifrw->ifrw_info >> 16) & 0x3;
rp->r_flags = RFLG_OWN; /* hang receive */
ifrw++;
}
/* start up the board (rah rah) */
s = splimp();
ds->ds_rindex = ds->ds_xindex = ds->ds_xfree = ds->ds_nxmit = 0;
ds->ds_if.if_flags |= IFF_RUNNING;
addr->pclow = PCSR0_INTE; /* avoid interlock */
destart(unit); /* queue output packets */
ds->ds_flags |= DSF_RUNNING; /* need before de_setaddr */
if (ds->ds_flags & DSF_SETADDR)
de_setaddr(ds->ds_addr, unit);
addr->pclow = CMD_START | PCSR0_INTE;
splx(s);
}
/*
* Setup output on interface.
* Get another datagram to send off of the interface queue,
* and map it to the interface before starting the output.
*/
destart(unit)
int unit;
{
int len;
struct uba_device *ui = deinfo[unit];
struct dedevice *addr = (struct dedevice *)ui->ui_addr;
register struct de_softc *ds = &de_softc[unit];
register struct de_ring *rp;
struct mbuf *m;
register int nxmit;
/*
* the following test is necessary, since
* the code is not reentrant and we have
* multiple transmission buffers.
*/
if (ds->ds_flags & DSF_LOCK)
return;
for (nxmit = ds->ds_nxmit; nxmit < NXMT; nxmit++) {
IF_DEQUEUE(&ds->ds_if.if_snd, m);
if (m == 0)
break;
rp = &ds->ds_xrent[ds->ds_xfree];
if (rp->r_flags & XFLG_OWN)
panic("deuna xmit in progress");
len = if_ubaput(&ds->ds_deuba, &ds->ds_ifw[ds->ds_xfree], m);
if (ds->ds_deuba.iff_flags & UBA_NEEDBDP)
UBAPURGE(ds->ds_deuba.iff_uba,
ds->ds_ifw[ds->ds_xfree].ifw_bdp);
rp->r_slen = len;
rp->r_tdrerr = 0;
rp->r_flags = XFLG_STP|XFLG_ENP|XFLG_OWN;
ds->ds_xfree++;
if (ds->ds_xfree == NXMT)
ds->ds_xfree = 0;
}
if (ds->ds_nxmit != nxmit) {
ds->ds_nxmit = nxmit;
if (ds->ds_flags & DSF_RUNNING)
addr->pclow = PCSR0_INTE|CMD_PDMD;
}
}
/*
* Command done interrupt.
*/
deintr(unit)
int unit;
{
struct uba_device *ui = deinfo[unit];
register struct dedevice *addr = (struct dedevice *)ui->ui_addr;
register struct de_softc *ds = &de_softc[unit];
register struct de_ring *rp;
register struct ifxmt *ifxp;
short csr0;
/* save flags right away - clear out interrupt bits */
csr0 = addr->pcsr0;
addr->pchigh = csr0 >> 8;
ds->ds_flags |= DSF_LOCK; /* prevent entering destart */
/*
* if receive, put receive buffer on mbuf
* and hang the request again
*/
derecv(unit);
/*
* Poll transmit ring and check status.
* Be careful about loopback requests.
* Then free buffer space and check for
* more transmit requests.
*/
for ( ; ds->ds_nxmit > 0; ds->ds_nxmit--) {
rp = &ds->ds_xrent[ds->ds_xindex];
if (rp->r_flags & XFLG_OWN)
break;
ds->ds_if.if_opackets++;
ifxp = &ds->ds_ifw[ds->ds_xindex];
/* check for unusual conditions */
if (rp->r_flags & (XFLG_ERRS|XFLG_MTCH|XFLG_ONE|XFLG_MORE)) {
if (rp->r_flags & XFLG_ERRS) {
/* output error */
ds->ds_if.if_oerrors++;
if (dedebug)
printf("de%d: oerror, flags=%b tdrerr=%b (len=%d)\n",
unit, rp->r_flags, XFLG_BITS,
rp->r_tdrerr, XERR_BITS, rp->r_slen);
} else if (rp->r_flags & XFLG_ONE) {
/* one collision */
ds->ds_if.if_collisions++;
} else if (rp->r_flags & XFLG_MORE) {
/* more than one collision */
ds->ds_if.if_collisions += 2; /* guess */
} else if (rp->r_flags & XFLG_MTCH) {
/* received our own packet */
ds->ds_if.if_ipackets++;
deread(ds, &ifxp->ifrw,
rp->r_slen - sizeof (struct ether_header));
}
}
if (ifxp->ifw_xtofree) {
m_freem(ifxp->ifw_xtofree);
ifxp->ifw_xtofree = 0;
}
/* check if next transmit buffer also finished */
ds->ds_xindex++;
if (ds->ds_xindex == NXMT)
ds->ds_xindex = 0;
}
ds->ds_flags &= ~DSF_LOCK;
destart(unit);
if (csr0 & PCSR0_RCBI) {
if (dedebug)
log(LOG_WARNING, "de%d: buffer unavailable\n", unit);
addr->pclow = PCSR0_INTE|CMD_PDMD;
}
}
/*
* Ethernet interface receiver interface.
* If input error just drop packet.
* Otherwise purge input buffered data path and examine
* packet to determine type. If can't determine length
* from type, then have to drop packet. Othewise decapsulate
* packet based on type and pass to type specific higher-level
* input routine.
*/
derecv(unit)
int unit;
{
register struct de_softc *ds = &de_softc[unit];
register struct de_ring *rp;
int len;
rp = &ds->ds_rrent[ds->ds_rindex];
while ((rp->r_flags & RFLG_OWN) == 0) {
ds->ds_if.if_ipackets++;
if (ds->ds_deuba.iff_flags & UBA_NEEDBDP)
UBAPURGE(ds->ds_deuba.iff_uba,
ds->ds_ifr[ds->ds_rindex].ifrw_bdp);
len = (rp->r_lenerr&RERR_MLEN) - sizeof (struct ether_header)
- 4; /* don't forget checksum! */
/* check for errors */
if ((rp->r_flags & (RFLG_ERRS|RFLG_FRAM|RFLG_OFLO|RFLG_CRC)) ||
(rp->r_flags&(RFLG_STP|RFLG_ENP)) != (RFLG_STP|RFLG_ENP) ||
(rp->r_lenerr & (RERR_BUFL|RERR_UBTO|RERR_NCHN)) ||
len < ETHERMIN || len > ETHERMTU) {
ds->ds_if.if_ierrors++;
if (dedebug)
printf("de%d: ierror, flags=%b lenerr=%b (len=%d)\n",
unit, rp->r_flags, RFLG_BITS, rp->r_lenerr,
RERR_BITS, len);
} else
deread(ds, &ds->ds_ifr[ds->ds_rindex], len);
/* hang the receive buffer again */
rp->r_lenerr = 0;
rp->r_flags = RFLG_OWN;
/* check next receive buffer */
ds->ds_rindex++;
if (ds->ds_rindex == NRCV)
ds->ds_rindex = 0;
rp = &ds->ds_rrent[ds->ds_rindex];
}
}
/*
* Pass a packet to the higher levels.
* We deal with the trailer protocol here.
*/
deread(ds, ifrw, len)
register struct de_softc *ds;
struct ifrw *ifrw;
int len;
{
struct ether_header *eh;
struct mbuf *m;
int off, resid;
int s;
register struct ifqueue *inq;
/*
* Deal with trailer protocol: if type is trailer type
* get true type from first 16-bit word past data.
* Remember that type was trailer by setting off.
*/
eh = (struct ether_header *)ifrw->ifrw_addr;
eh->ether_type = ntohs((u_short)eh->ether_type);
#define dedataaddr(eh, off, type) ((type)(((caddr_t)((eh)+1)+(off))))
if (eh->ether_type >= ETHERTYPE_TRAIL &&
eh->ether_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) {
off = (eh->ether_type - ETHERTYPE_TRAIL) * 512;
if (off >= ETHERMTU)
return; /* sanity */
eh->ether_type = ntohs(*dedataaddr(eh, off, u_short *));
resid = ntohs(*(dedataaddr(eh, off+2, u_short *)));
if (off + resid > len)
return; /* sanity */
len = off + resid;
} else
off = 0;
if (len == 0)
return;
/*
* Pull packet off interface. Off is nonzero if packet
* has trailing header; if_ubaget will then force this header
* information to be at the front, but we still have to drop
* the type and length which are at the front of any trailer data.
*/
m = if_ubaget(&ds->ds_deuba, ifrw, len, off, &ds->ds_if);
if (m == 0)
return;
if (off) {
struct ifnet *ifp;
ifp = *(mtod(m, struct ifnet **));
m->m_off += 2 * sizeof (u_short);
m->m_len -= 2 * sizeof (u_short);
*(mtod(m, struct ifnet **)) = ifp;
}
switch (eh->ether_type) {
#ifdef INET
case ETHERTYPE_IP:
schednetisr(NETISR_IP);
inq = &ipintrq;
break;
case ETHERTYPE_ARP:
arpinput(&ds->ds_ac, m);
return;
#endif
#ifdef NS
case ETHERTYPE_NS:
schednetisr(NETISR_NS);
inq = &nsintrq;
break;
#endif
default:
m_freem(m);
return;
}
s = splimp();
if (IF_QFULL(inq)) {
IF_DROP(inq);
splx(s);
m_freem(m);
return;
}
IF_ENQUEUE(inq, m);
splx(s);
}
/*
* Ethernet output routine.
* Encapsulate a packet of type family for the local net.
* Use trailer local net encapsulation if enough data in first
* packet leaves a multiple of 512 bytes of data in remainder.
*/
deoutput(ifp, m0, dst)
struct ifnet *ifp;
struct mbuf *m0;
struct sockaddr *dst;
{
int type, s, error;
u_char edst[6];
struct in_addr idst;
register struct de_softc *ds = &de_softc[ifp->if_unit];
register struct mbuf *m = m0;
register struct ether_header *eh;
register int off;
int usetrailers;
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
error = ENETDOWN;
goto bad;
}
switch (dst->sa_family) {
#ifdef INET
case AF_INET:
idst = ((struct sockaddr_in *)dst)->sin_addr;
if (!arpresolve(&ds->ds_ac, m, &idst, edst, &usetrailers))
return (0); /* if not yet resolved */
off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len;
if (usetrailers && off > 0 && (off & 0x1ff) == 0 &&
m->m_off >= MMINOFF + 2 * sizeof (u_short)) {
type = ETHERTYPE_TRAIL + (off>>9);
m->m_off -= 2 * sizeof (u_short);
m->m_len += 2 * sizeof (u_short);
*mtod(m, u_short *) = htons((u_short)ETHERTYPE_IP);
*(mtod(m, u_short *) + 1) = htons((u_short)m->m_len);
goto gottrailertype;
}
type = ETHERTYPE_IP;
off = 0;
goto gottype;
#endif
#ifdef NS
case AF_NS:
type = ETHERTYPE_NS;
bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
(caddr_t)edst, sizeof (edst));
off = 0;
goto gottype;
#endif
case AF_UNSPEC:
eh = (struct ether_header *)dst->sa_data;
bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst));
type = eh->ether_type;
goto gottype;
default:
printf("de%d: can't handle af%d\n", ifp->if_unit,
dst->sa_family);
error = EAFNOSUPPORT;
goto bad;
}
gottrailertype:
/*
* Packet to be sent as trailer: move first packet
* (control information) to end of chain.
*/
while (m->m_next)
m = m->m_next;
m->m_next = m0;
m = m0->m_next;
m0->m_next = 0;
m0 = m;
gottype:
/*
* Add local net header. If no space in first mbuf,
* allocate another.
*/
if (m->m_off > MMAXOFF ||
MMINOFF + sizeof (struct ether_header) > m->m_off) {
m = m_get(M_DONTWAIT, MT_HEADER);
if (m == 0) {
error = ENOBUFS;
goto bad;
}
m->m_next = m0;
m->m_off = MMINOFF;
m->m_len = sizeof (struct ether_header);
} else {
m->m_off -= sizeof (struct ether_header);
m->m_len += sizeof (struct ether_header);
}
eh = mtod(m, struct ether_header *);
eh->ether_type = htons((u_short)type);
bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
/* DEUNA fills in source address */
/*
* Queue message on interface, and start output if interface
* not yet active.
*/
s = splimp();
if (IF_QFULL(&ifp->if_snd)) {
IF_DROP(&ifp->if_snd);
splx(s);
m_freem(m);
return (ENOBUFS);
}
IF_ENQUEUE(&ifp->if_snd, m);
destart(ifp->if_unit);
splx(s);
return (0);
bad:
m_freem(m0);
return (error);
}
/*
* Process an ioctl request.
*/
deioctl(ifp, cmd, data)
register struct ifnet *ifp;
int cmd;
caddr_t data;
{
register struct ifaddr *ifa = (struct ifaddr *)data;
register struct de_softc *ds = &de_softc[ifp->if_unit];
int s = splimp(), error = 0;
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
deinit(ifp->if_unit);
switch (ifa->ifa_addr.sa_family) {
#ifdef INET
case AF_INET:
((struct arpcom *)ifp)->ac_ipaddr =
IA_SIN(ifa)->sin_addr;
arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr);
break;
#endif
#ifdef NS
case AF_NS:
{
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
if (ns_nullhost(*ina))
ina->x_host = *(union ns_host *)(ds->ds_addr);
else
de_setaddr(ina->x_host.c_host,ifp->if_unit);
break;
}
#endif
}
break;
case SIOCSIFFLAGS:
if ((ifp->if_flags & IFF_UP) == 0 &&
ds->ds_flags & DSF_RUNNING) {
((struct dedevice *)
(deinfo[ifp->if_unit]->ui_addr))->pclow = 0;
DELAY(100);
((struct dedevice *)
(deinfo[ifp->if_unit]->ui_addr))->pclow = PCSR0_RSET;
ds->ds_flags &= ~(DSF_LOCK | DSF_RUNNING);
} else if (ifp->if_flags & IFF_UP &&
(ds->ds_flags & DSF_RUNNING) == 0)
deinit(ifp->if_unit);
break;
default:
error = EINVAL;
}
splx(s);
return (error);
}
/*
* set ethernet address for unit
*/
de_setaddr(physaddr, unit)
u_char *physaddr;
int unit;
{
register struct de_softc *ds = &de_softc[unit];
struct uba_device *ui = deinfo[unit];
register struct dedevice *addr= (struct dedevice *)ui->ui_addr;
if (! (ds->ds_flags & DSF_RUNNING))
return;
bcopy((caddr_t) physaddr, (caddr_t) &ds->ds_pcbb.pcbb2, 6);
ds->ds_pcbb.pcbb0 = FC_WTPHYAD;
addr->pclow = PCSR0_INTE|CMD_GETCMD;
if (dewait(ui, "address change") == 0) {
ds->ds_flags |= DSF_SETADDR;
bcopy((caddr_t) physaddr, (caddr_t) ds->ds_addr, 6);
}
}
/*
* Await completion of the named function
* and check for errors.
*/
dewait(ui, fn)
register struct uba_device *ui;
char *fn;
{
register struct dedevice *addr = (struct dedevice *)ui->ui_addr;
register csr0;
while ((addr->pcsr0 & PCSR0_INTR) == 0)
;
csr0 = addr->pcsr0;
addr->pchigh = csr0 >> 8;
if (csr0 & PCSR0_PCEI)
printf("de%d: %s failed, csr0=%b csr1=%b\n",
ui->ui_unit, fn, csr0, PCSR0_BITS,
addr->pcsr1, PCSR1_BITS);
return (csr0 & PCSR0_PCEI);
}
#endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.