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If we can't get mbuf clusters, take the ppp interface down instead 

of writing beyond the end of ordinary mbufs.
This commit is contained in:
paulus 1994-07-18 23:45:33 +00:00
parent fb6819f643
commit e7ba8f6b5a
1 changed files with 12 additions and 3 deletions
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15
sys/net/if_ppp.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_ppp.c,v 1.15 1994/07/03 06:44:03 deraadt Exp $ */
/* $NetBSD: if_ppp.c,v 1.16 1994/07/18 23:45:33 paulus Exp $ */
/*
* if_ppp.c - Point-to-Point Protocol (PPP) Asynchronous driver.
@ -1037,14 +1037,23 @@ pppgetm(sc)
for (;; mp = &m->m_next) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(sc->sc_m);
sc->sc_m = NULL;
if (sc->sc_m != NULL) {
m_freem(sc->sc_m);
sc->sc_m = NULL;
}
splx(s);
printf("ppp%d: can't allocate mbuf\n", sc->sc_if.if_unit);
return (0);
}
*mp = m;
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(sc->sc_m);
sc->sc_m = NULL;
splx(s);
printf("ppp%d: can't allocate mbuf cluster\n", sc->sc_if.if_unit);
return (0);
}
if ((len -= M_DATASIZE(m)) <= 0) {
splx(s);
return (1);