ee_wstrt.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 146 行

head	1.3;
access;
symbols;
locks
	dls:1.3; strict;
comment	@ * @;


1.3
date	97.09.21.19.25.55;	author dls;	state Dist;
branches;
next	1.2;

1.2
date	95.02.05.21.42.57;	author dls;	state Broken;
branches;
next	1.1;

1.1
date	94.09.24.01.00.41;	author dls;	state Works;
branches;
next	;


desc
@@


1.3
log
@pre-3e code
@
text
@/* ee_wstrt.c - ee_wstrt */

#include <conf.h>
#include <kernel.h>
#include <network.h>
#include <ee.h>

static count = 0;

/*------------------------------------------------------------------------
 * ee_wstrt - start output on an Intel EtherExpress
 *------------------------------------------------------------------------
 */
int
ee_wstrt(ped)
struct etdev	*ped;
{
	STATWORD	ps;
	struct tbd	*ptdb;
	unsigned int	csr;
	struct ep	*pep;
	int		len, isbcast;

	disable(ps);
	if (ped->ed_xpending) {
		restore(ps);
		return OK;
	}
	ped->ed_xpending++;
	pep = (struct ep *)deq(ped->ed_outq);
	switch ((int)pep) {
	case 0:
		ped->ed_xpending--;
		restore(ps);
		return OK;
	case EE_SETMULTI:
		restore(ps);
		return ee_cmd(ped, EECMD_MCSET|EECMD_I, ped->ed_mca,
			ped->ed_mcc);
	default:
		break;
	}
	isbcast = blkequ(pep->ep_dst, ped->ed_bcast, EP_ALEN);
	len = pep->ep_len;
	/* this version supports one packet per interrupt only */

	blkcopy(ped->ed_xmbuf, &pep->ep_eh, pep->ep_len);
	ptdb = ped->ed_tbd;
	ptdb->tbd_count = len;
	ptdb->tbd_eof = 1;
	freebuf(pep);
	restore(ps);
	if (isbcast)
		nif[ped->ed_ifnum].ni_onucast++;
	else
		nif[ped->ed_ifnum].ni_oucast++;
	nif[ped->ed_ifnum].ni_ooctets += len;
	return ee_cmd(ped, EECMD_TX|EECMD_I);
}
@


1.2
log
@*** empty log message ***
@
text
@d20 1
d25 1
a25 5
	wait(ped->ed_cmutex);
	if (ped->ed_mcset) {
kprintf("calling eecmd\n");
		ped->ed_mcset = 0;
		ee_cmd(ped, EECMD_MCSET|EECMD_I, ped->ed_mca, ped->ed_mcc);
d29 1
d31 3
a33 2
	if (pep == 0) {
		signal(ped->ed_cmutex);
d36 6
a47 1
	freebuf(pep);
d51 1
a51 1
	ee_cmd(ped, EECMD_TX|EECMD_I);
d58 1
@


1.1
log
@Initial revision
@
text
@a19 1
	unsigned int	csr;
d24 5
a28 1
	if (ped->ed_xpending) {
a31 1
	ped->ed_xpending++;
d34 1
a34 1
		ped->ed_xpending--;
d43 1
d47 1
a47 1
	freebuf(pep);
a53 1
	ee_cmd(ped, EECMD_TX|EECMD_I);
@