Commit 22041fb0 authored Apr 30, 2014 by KY Srinivasan Committed by David S. Miller Apr 30, 2014

hyperv: Properly handle checksum offload



Do checksum offload only if the client of the driver wants checksum to be
offloaded.

In V1 version of this patch, I  addressed comments from
Stephen Hemminger <stephen@networkplumber.org> and
Eric Dumazet <eric.dumazet@gmail.com>.

In this version of the patch I have addressed comments from
David Miller.

This patch fixes a bug that is exposed in gateway scenarios.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 6ce29b0e

drivers/net/hyperv/netvsc_drv.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -382,6 +382,10 @@ static int netvsc_start_xmit(struct sk_buff skb, struct net_device net)
		if (skb_is_gso(skb))
		goto do_lso;

		if ((skb->ip_summed == CHECKSUM_NONE) \|\|
		(skb->ip_summed == CHECKSUM_UNNECESSARY))
		goto do_send;

		rndis_msg_size += NDIS_CSUM_PPI_SIZE;
		ppi = init_ppi_data(rndis_msg, NDIS_CSUM_PPI_SIZE,
		TCPIP_CHKSUM_PKTINFO);