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SubjectRE: [PATCH] ppp_generic: fix multilink fragment sizes
The proposed patch looks wrong to me.

nbigger is already doing the job; I didn't use DIV_ROUND_UP because in general we don't have always to roundup, otherwise we would exceed the total bandwidth.

Regards

Gabriele Paoloni

-----Original Message-----
From: Ben McKeegan [mailto:ben@netservers.co.uk]
Sent: 02 June 2010 16:05
To: davem@davemloft.net
Cc: ben@netservers.co.uk; netdev@vger.kernel.org; linux-kernel@vger.kernel.org; Paoloni, Gabriele; alan@lxorguk.ukuu.org.uk; linux-ppp@vger.kernel.org; paulus@samba.org
Subject: [PATCH] ppp_generic: fix multilink fragment sizes

Fix bug in multilink fragment size calculation introduced by
commit 9c705260feea6ae329bc6b6d5f6d2ef0227eda0a
"ppp: ppp_mp_explode() redesign"

Signed-off-by: Ben McKeegan <ben@netservers.co.uk>
---
drivers/net/ppp_generic.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 0db3894..8b36bfe 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1416,7 +1416,8 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
flen = len;
if (nfree > 0) {
if (pch->speed == 0) {
- flen = totlen/nfree;
+ if (nfree > 1)
+ flen = DIV_ROUND_UP(len, nfree);
if (nbigger > 0) {
flen++;
nbigger--;
--
1.5.6.5
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