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hv_netvsc: replace divide with mask when computing padding
Packet alignment is always a power of 2 therefore modulus can be replaced with a faster and operation Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -712,11 +712,12 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device,
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int i;
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u32 msg_size = 0;
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u32 padding = 0;
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u32 remain = packet->total_data_buflen % net_device->pkt_align;
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u32 page_count = packet->cp_partial ? packet->rmsg_pgcnt :
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packet->page_buf_cnt;
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u32 remain;
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/* Add padding */
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remain = packet->total_data_buflen & (net_device->pkt_align - 1);
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if (skb->xmit_more && remain && !packet->cp_partial) {
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padding = net_device->pkt_align - remain;
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rndis_msg->msg_len += padding;
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