1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index b708f68471a6..6456484c0299 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1283,6 +1283,11 @@ ppp_push(struct ppp *ppp)
 }
 
 #ifdef CONFIG_PPP_MULTILINK
+static bool mp_protocol_compress __read_mostly = true;
+module_param(mp_protocol_compress, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(mp_protocol_compress,
+                 "compress protocol id in multilink fragments");
+
 /*
  * Divide a packet to be transmitted into fragments and
  * send them out the individual links.
@@ -1345,10 +1350,10 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
         if (nfree == 0 || nfree < navail / 2)
                 return 0; /* can't take now, leave it in xmit_pending */
 
-        /* Do protocol field compression (XXX this should be optional) */
+        /* Do protocol field compression */
         p = skb->data;
         len = skb->len;
-        if (*p == 0) {
+        if (*p == 0 && mp_protocol_compress) {
                 ++p;
                 --len;
         }