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Make sure we only schedule one timeout to refill the mbuf queue.

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This commit is contained in:
mycroft 1995-10-10 03:11:28 +00:00
parent 92221a1399
commit 3450507404
1 changed files with 7 additions and 4 deletions
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11
sys/dev/isa/if_ep.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ep.c,v 1.81 1995/07/27 05:01:08 mycroft Exp $ */
/* $NetBSD: if_ep.c,v 1.82 1995/10/10 03:11:28 mycroft Exp $ */
/*
* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
@ -846,9 +846,6 @@ epget(sc, totlen)
int len;
int sh;
/* We're going to use at least one mbuf. */
timeout(epmbuffill, sc, 1);
m = sc->mb[sc->next_mb];
sc->mb[sc->next_mb] = 0;
if (m == 0) {
@ -856,6 +853,9 @@ epget(sc, totlen)
if (m == 0)
return 0;
} else {
/* If the queue is no longer full, refill. */
if (sc->last_mb == sc->next_mb)
timeout(epmbuffill, sc, 1);
/* Convert one of our saved mbuf's. */
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
m->m_data = m->m_pktdat;
@ -1143,6 +1143,9 @@ epmbuffill(sc)
i = (i + 1) % MAX_MBS;
} while (i != sc->next_mb);
sc->last_mb = i;
/* If the queue was not filled, try again. */
if (sc->last_mb != sc->next_mb)
timeout(epmbuffill, sc, 1);
splx(s);
}