From: Julian Wiedmann <jwi@xxxxxxxxxxxxx>
[ Upstream commit 34c7f50f7d0d36fa663c74aee39e25e912505320 ]
Calling into socket code is ugly already, at least check whether we are
dealing with the expected sk_family. Only looking at skb->protocol is
bound to cause troubles (consider eg. af_packet).
Fixes: b333293058aa ("qeth: add support for af_iucv HiperSockets transport")
Signed-off-by: Julian Wiedmann <jwi@xxxxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/s390/net/qeth_core_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 6a73982514237..f22e3653da52d 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -32,6 +32,7 @@
#include <net/iucv/af_iucv.h>
#include <net/dsfield.h>
+#include <net/sock.h>
#include <asm/ebcdic.h>
#include <asm/chpid.h>
@@ -1408,7 +1409,7 @@ static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
skb_queue_walk(&buf->skb_list, skb) {
QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
- if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
+ if (skb->sk && skb->sk->sk_family == PF_IUCV)
iucv_sk(skb->sk)->sk_txnotify(skb, notification);
}
}
--
2.27.0
