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Commit b85e06f7 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
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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: default avatarStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 200a5699

drivers/net/hyperv/netvsc.c

+2 −1
Original line number Diff line number Diff line
@@ -712,11 +712,12 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, 
	int i;

	u32 msg_size = 0;

	u32 padding = 0;

	u32 remain = packet->total_data_buflen % net_device->pkt_align;

	u32 page_count = packet->cp_partial ? packet->rmsg_pgcnt :

		packet->page_buf_cnt;

	u32 remain;



	/* Add padding */

	remain = packet->total_data_buflen & (net_device->pkt_align - 1);

	if (skb->xmit_more && remain && !packet->cp_partial) {

		padding = net_device->pkt_align - remain;

		rndis_msg->msg_len += padding;