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-rw-r--r--drivers/net/ppp_generic.c34
1 files changed, 18 insertions, 16 deletions
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 639d11bc444e..cd37d739ac74 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1384,7 +1384,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
/* create a fragment for each channel */
bits = B;
- while (nfree > 0 && len > 0) {
+ while (len > 0) {
list = list->next;
if (list == &ppp->channels) {
i = 0;
@@ -1431,29 +1431,31 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
*otherwise divide it according to the speed
*of the channel we are going to transmit on
*/
- if (pch->speed == 0) {
- flen = totlen/nfree ;
- if (nbigger > 0) {
- flen++;
- nbigger--;
- }
- } else {
- flen = (((totfree - nzero)*(totlen + hdrlen*totfree)) /
- ((totspeed*totfree)/pch->speed)) - hdrlen;
- if (nbigger > 0) {
- flen += ((totfree - nzero)*pch->speed)/totspeed;
- nbigger -= ((totfree - nzero)*pch->speed)/
+ if (nfree > 0) {
+ if (pch->speed == 0) {
+ flen = totlen/nfree ;
+ if (nbigger > 0) {
+ flen++;
+ nbigger--;
+ }
+ } else {
+ flen = (((totfree - nzero)*(totlen + hdrlen*totfree)) /
+ ((totspeed*totfree)/pch->speed)) - hdrlen;
+ if (nbigger > 0) {
+ flen += ((totfree - nzero)*pch->speed)/totspeed;
+ nbigger -= ((totfree - nzero)*pch->speed)/
totspeed;
+ }
}
+ nfree--;
}
- nfree--;
/*
*check if we are on the last channel or
*we exceded the lenght of the data to
*fragment
*/
- if ((nfree == 0) || (flen > len))
+ if ((nfree <= 0) || (flen > len))
flen = len;
/*
*it is not worth to tx on slow channels:
@@ -1467,7 +1469,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
continue;
}
- mtu = pch->chan->mtu + 2 - hdrlen;
+ mtu = pch->chan->mtu - hdrlen;
if (mtu < 4)
mtu = 4;
if (flen > mtu)