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Slight simplification to previous.

This commit is contained in:
mycroft 1998-12-12 16:31:34 +00:00
parent be595f36c4
commit a6717054a4
1 changed files with 18 additions and 18 deletions
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36
sys/dev/ic/dp8390.c
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@ -1,4 +1,4 @@
/* $NetBSD: dp8390.c,v 1.18 1998/12/11 18:03:55 bad Exp $ */
/* $NetBSD: dp8390.c,v 1.19 1998/12/12 16:31:34 mycroft Exp $ */
/*
* Device driver for National Semiconductor DS8390/WD83C690 based ethernet
@ -1064,21 +1064,19 @@ dp8390_get(sc, src, total_len)
struct mbuf *m, *m0, *newm;
u_short len;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
return 0;
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = total_len;
MGETHDR(m0, M_DONTWAIT, MT_DATA);
if (m0 == 0)
return (0);
m0->m_pkthdr.rcvif = ifp;
m0->m_pkthdr.len = total_len;
len = MHLEN;
m = m0;
m0 = m;
while (total_len > 0) {
if (total_len >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m0);
return 0;
}
if ((m->m_flags & M_EXT) == 0)
goto bad;
len = MCLBYTES;
}
@ -1098,20 +1096,22 @@ dp8390_get(sc, src, total_len)
src = (*sc->ring_copy)(sc, src, mtod(m, caddr_t), len);
else
src = dp8390_ring_copy(sc, src, mtod(m, caddr_t), len);
total_len -= len;
if (total_len > 0) {
MGET(newm, M_DONTWAIT, MT_DATA);
if (newm == 0) {
m_freem(m0);
return 0;
}
m->m_next = newm;
m = newm;
if (newm == 0)
goto bad;
len = MLEN;
m = m->m_next = newm;
}
}
return m0;
return (m0);
bad:
m_freem(m0);
return (0);
}