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authorUrsula Braun <ursula.braun@de.ibm.com>2008-10-24 11:16:55 +0200
committerJeff Garzik <jgarzik@redhat.com>2008-10-27 14:49:00 -0400
commit2d488c2f514a6c5248a0773c78345626abdc1818 (patch)
tree5400c148987e270a38aa15b76144cbfc40a6b93c /drivers/s390
parentcc181282fb2fa1af6d532f1333dd42af4814ff17 (diff)
downloadop-kernel-dev-2d488c2f514a6c5248a0773c78345626abdc1818.zip
op-kernel-dev-2d488c2f514a6c5248a0773c78345626abdc1818.tar.gz
qeth: avoid skb_under_panic for malformatted inbound data
To make the qeth driver more robust in case of malformatted inbound packets due to hardware problems, an additional check for OSN-card-type is added for OSN-type packets. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/net/qeth_l2_main.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index fdf4ffa..1b1e803 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -449,12 +449,15 @@ static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
netif_rx(skb);
break;
case QETH_HEADER_TYPE_OSN:
- skb_push(skb, sizeof(struct qeth_hdr));
- skb_copy_to_linear_data(skb, hdr,
+ if (card->info.type == QETH_CARD_TYPE_OSN) {
+ skb_push(skb, sizeof(struct qeth_hdr));
+ skb_copy_to_linear_data(skb, hdr,
sizeof(struct qeth_hdr));
- len = skb->len;
- card->osn_info.data_cb(skb);
- break;
+ len = skb->len;
+ card->osn_info.data_cb(skb);
+ break;
+ }
+ /* else unknown */
default:
dev_kfree_skb_any(skb);
QETH_DBF_TEXT(TRACE, 3, "inbunkno");
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