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-rw-r--r--drivers/net/macvtap.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index e40fdfccc9c1..27ecc5c4fa26 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -654,11 +654,14 @@ static void macvtap_skb_to_vnet_hdr(struct macvtap_queue *q,
654 } /* else everything is zero */ 654 } /* else everything is zero */
655} 655}
656 656
657/* Neighbour code has some assumptions on HH_DATA_MOD alignment */
658#define MACVTAP_RESERVE HH_DATA_OFF(ETH_HLEN)
659
657/* Get packet from user space buffer */ 660/* Get packet from user space buffer */
658static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m, 661static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
659 struct iov_iter *from, int noblock) 662 struct iov_iter *from, int noblock)
660{ 663{
661 int good_linear = SKB_MAX_HEAD(NET_IP_ALIGN); 664 int good_linear = SKB_MAX_HEAD(MACVTAP_RESERVE);
662 struct sk_buff *skb; 665 struct sk_buff *skb;
663 struct macvlan_dev *vlan; 666 struct macvlan_dev *vlan;
664 unsigned long total_len = iov_iter_count(from); 667 unsigned long total_len = iov_iter_count(from);
@@ -722,7 +725,7 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
722 linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len); 725 linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
723 } 726 }
724 727
725 skb = macvtap_alloc_skb(&q->sk, NET_IP_ALIGN, copylen, 728 skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen,
726 linear, noblock, &err); 729 linear, noblock, &err);
727 if (!skb) 730 if (!skb)
728 goto err; 731 goto err;