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s390/qeth: fix off-by-one in RX copybreak check

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The RX copybreak is intended as the _max_ value where the frame's data
should be copied. So for frame_len == copybreak, don't build an SG skb.

Fixes: 4a71df5004 ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2020-02-20 15:54:56 +01:00 committed by David S. Miller
parent 420579dba1
commit 54a61fbc02
1 changed files with 1 additions and 1 deletions
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2
drivers/s390/net/qeth_core_main.c
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@ -5344,7 +5344,7 @@ static int qeth_extract_skb(struct qeth_card *card,
}
use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
((skb_len >= card->options.rx_sg_cb) &&
(skb_len > card->options.rx_sg_cb &&
!atomic_read(&card->force_alloc_skb) &&
!IS_OSN(card));