From 74d4d8a26e876e54f5070d993478adde86cef34f Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Tue, 15 Mar 2016 22:10:54 +0100
Subject: [PATCH] pppoe: Add support for -c and -C to enable/disable header
 compression (thanks k0ga)

---
 sys/man/8/ppp          |  2 +-
 sys/src/cmd/ip/pppoe.c | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/sys/man/8/ppp b/sys/man/8/ppp
index 2ca24b1db..9237585d4 100644
--- a/sys/man/8/ppp
+++ b/sys/man/8/ppp
@@ -34,7 +34,7 @@ ppp, pppoe, pptp, pptpd \- point-to-point protocol
 .PP
 .B ip/pppoe
 [
-.B -Pd
+.B -PdcC
 ]
 [
 .B -A
diff --git a/sys/src/cmd/ip/pppoe.c b/sys/src/cmd/ip/pppoe.c
index 6cd3f2570..34bfb00f9 100644
--- a/sys/src/cmd/ip/pppoe.c
+++ b/sys/src/cmd/ip/pppoe.c
@@ -28,11 +28,12 @@ uchar *cookie;
 int cookielen;
 uchar etherdst[6];
 int mtu = 1492;
+int pktcompress, hdrcompress;
 
 void
 usage(void)
 {
-	fprint(2, "usage: pppoe [-Pd] [-A acname] [-S srvname] [-k keyspec] [-m mtu] [-x pppnet] [ether0]\n");
+	fprint(2, "usage: pppoe [-PdcC] [-A acname] [-S srvname] [-k keyspec] [-m mtu] [-x pppnet] [ether0]\n");
 	exits("usage");
 }
 
@@ -75,6 +76,12 @@ main(int argc, char **argv)
 	case 'k':
 		keyspec = EARGF(usage());
 		break;
+	case 'c':
+		pktcompress = 1;
+		break;
+	case 'C':
+		hdrcompress = 1;
+		break;
 	case 'x':
 		pppnetmtpt = EARGF(usage());
 		break;
@@ -526,6 +533,10 @@ execppp(int fd)
 		argv[argc++] = "-d";
 	if(primary)
 		argv[argc++] = "-P";
+	if(hdrcompress)
+		argv[argc++] = "-C";
+	if(pktcompress)
+		argv[argc++] = "-c";
 	if(pppnetmtpt){
 		argv[argc++] = "-x";
 		argv[argc++] = pppnetmtpt;