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| author | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 14:51:38 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-10-20 14:51:38 +0200 |
| commit | 1faca4ced8594d3586302e8d1788a60932f2bbca (patch) | |
| tree | 5130aaa4803a322f3d1f0ff6406f047ed0dba475 /drivers/net/ppp_generic.c | |
| parent | 112d17d6f75b93e1dcaec2e2232a411148b3bf71 (diff) | |
| parent | 6b6844dd54e4196dd9818bc63b319f93c37a08be (diff) | |
Merge branch 'samsung/devel' of git+ssh://git.linaro.org/home/arndbergmann/public_git/arm-soc into next/devel2
Diffstat (limited to 'drivers/net/ppp_generic.c')
| -rw-r--r-- | drivers/net/ppp_generic.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c index 10e5d985afa3..edfa15d2e795 100644 --- a/drivers/net/ppp_generic.c +++ b/drivers/net/ppp_generic.c @@ -1465,7 +1465,12 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb) continue; } - mtu = pch->chan->mtu - hdrlen; + /* + * hdrlen includes the 2-byte PPP protocol field, but the + * MTU counts only the payload excluding the protocol field. + * (RFC1661 Section 2) + */ + mtu = pch->chan->mtu - (hdrlen - 2); if (mtu < 4) mtu = 4; if (flen > mtu) |