From: Huazhong Tan tanhuazhong@huawei.com
[ Upstream commit b1ccd4c0ab6ef499f47dd84ed4920502a7147bba ]
skb->truesize is not meant to be tracking amount of used bytes in a skb, but amount of reserved/consumed bytes in memory.
For instance, if we use a single byte in last page fragment, we have to account the full size of the fragment.
So skb_add_rx_frag needs to calculate the length of the entire buffer into turesize.
Fixes: 9cbe9fd5214e ("net: hns: optimize XGE capability by reducing cpu usage") Signed-off-by: Huazhong tan tanhuazhong@huawei.com Signed-off-by: Salil Mehta salil.mehta@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/ethernet/hisilicon/hns/hns_enet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index 111e1aab7d83..8a2a07e21324 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -529,7 +529,7 @@ static void hns_nic_reuse_page(struct sk_buff *skb, int i, }
skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, - size - pull_len, truesize - pull_len); + size - pull_len, truesize);
/* avoid re-using remote pages,flag default unreuse */ if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))