We need to ensure there is enough headroom to push QCA header, so input the QCA header length instead of 0. Signed-off-by: xiaofeis <xiaofeis@xxxxxxxxxxxxxx> --- net/dsa/tag_qca.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c index c958852..72c1629 100644 --- a/net/dsa/tag_qca.c +++ b/net/dsa/tag_qca.c @@ -36,7 +36,7 @@ static struct sk_buff *qca_tag_xmit(struct sk_buff *skb, struct net_device *dev) dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; - if (skb_cow_head(skb, 0) < 0) + if (skb_cow_head(skb, QCA_HDR_LEN) < 0) return NULL; skb_push(skb, QCA_HDR_LEN); -- 2.7.4
