From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Julian Wiedmann Subject: [PATCH net 2/4] s390/qeth: make af_iucv TX notification call more robust Date: Fri, 20 Nov 2020 10:09:37 +0100 Message-Id: <20201120090939.101406-3-jwi@linux.ibm.com> In-Reply-To: <20201120090939.101406-1-jwi@linux.ibm.com> References: <20201120090939.101406-1-jwi@linux.ibm.com> List-ID: To: David Miller , Jakub Kicinski Cc: linux-netdev , linux-s390 , Heiko Carstens , Karsten Graul , Julian Wiedmann 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 --- 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 93c9b30ab17a..715f440bdc7c 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -33,6 +33,7 @@ #include #include +#include #include #include @@ -1405,7 +1406,7 @@ 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); } } -- 2.17.1