From: Ursula Braun <braunu@de.ibm.com>
Date: Fri, 5 Oct 2007 14:45:48 +0000 (+0200)
Subject: qeth: discard inbound packets with unknown header id
X-Git-Tag: v3.12-rc1~26468^2~155
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=28692ec45e58f40a998beb155fe1c0d3e1167485;p=kernel%2Fkernel-generic.git

qeth: discard inbound packets with unknown header id

Debugging statements are added for inbound packets with unknown
header id. Those packets are discarded and no longer processed as
osn-packets.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 6d7b79e..c67e7df 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -2702,10 +2702,15 @@ qeth_process_inbound_buffer(struct qeth_card *card,
 			qeth_layer2_rebuild_skb(card, skb, hdr);
 		else if (hdr->hdr.l3.id == QETH_HEADER_TYPE_LAYER3)
 			vlan_tag = qeth_rebuild_skb(card, skb, hdr);
-		else { /*in case of OSN*/
+		else if (hdr->hdr.osn.id == QETH_HEADER_TYPE_OSN) {
 			skb_push(skb, sizeof(struct qeth_hdr));
 			skb_copy_to_linear_data(skb, hdr,
 						sizeof(struct qeth_hdr));
+		} else { /* unknown header type */
+			dev_kfree_skb_any(skb);
+			QETH_DBF_TEXT(trace, 3, "inbunkno");
+			QETH_DBF_HEX(control, 3, hdr, QETH_DBF_CONTROL_LEN);
+			continue;
 		}
 		/* is device UP ? */
 		if (!(card->dev->flags & IFF_UP)){