From: Michal Ostrowski <mostrows@earthlink.net>
Date: Wed, 27 Sep 2006 23:11:25 +0000 (-0700)
Subject: [PPPOE]: Advertise PPPoE MTU
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c9aa6895371b2a257401f59d3393c9f7ac5a8698;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PPPOE]: Advertise PPPoE MTU

PPPoE must advertise the underlying device's MTU via the ppp channel
descriptor structure, as multilink functionality depends on it.

Signed-off-by: Michal Ostrowski <mostrows@earthlink.net>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index 5666ed998142..0adee733b761 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -600,6 +600,7 @@ static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
 		po->chan.hdrlen = (sizeof(struct pppoe_hdr) +
 				   dev->hard_header_len);
 
+		po->chan.mtu = dev->mtu - sizeof(struct pppoe_hdr);
 		po->chan.private = sk;
 		po->chan.ops = &pppoe_chan_ops;