netdev - [PATCH net-next 4/9] s390/qeth: clarify remaining dev_kfree_skb

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Message-Id: <20211025095658.3527635-5-jwi@linux.ibm.com>
Date:   Mon, 25 Oct 2021 11:56:53 +0200
From:   Julian Wiedmann <jwi@...ux.ibm.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     linux-netdev <netdev@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        Julian Wiedmann <jwi@...ux.ibm.com>
Subject: [PATCH net-next 4/9] s390/qeth: clarify remaining dev_kfree_skb_any() users

For none of the users we are under risk of running in HW IRQ context or
or with IRQs disabled. Thus we always end up in consume_skb().

But the two occurences in the RX path should really report the dropped
packet to dropmon, so have them use kfree_skb() instead. That's also
consistent with what napi_free_frags() does internally.

Signed-off-by: Julian Wiedmann <jwi@...ux.ibm.com>
---
 drivers/s390/net/qeth_core_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 48dea62bdaa4..d6230e4e8b1c 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -2630,7 +2630,7 @@ static void qeth_free_qdio_queues(struct qeth_card *card)
 	qeth_free_cq(card);
 	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
 		if (card->qdio.in_q->bufs[j].rx_skb)
-			dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
+			consume_skb(card->qdio.in_q->bufs[j].rx_skb);
 	}
 	qeth_free_qdio_queue(card->qdio.in_q);
 	card->qdio.in_q = NULL;
@@ -5606,7 +5606,7 @@ static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
 		if (uses_frags)
 			napi_free_frags(napi);
 		else
-			dev_kfree_skb_any(skb);
+			kfree_skb(skb);
 		return;
 	}
 
@@ -5797,7 +5797,7 @@ static int qeth_extract_skb(struct qeth_card *card,
 					if (uses_frags)
 						napi_free_frags(napi);
 					else
-						dev_kfree_skb_any(skb);
+						kfree_skb(skb);
 					QETH_CARD_STAT_INC(card,
 							   rx_length_errors);
 				}
-- 
2.25.1