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 <step...@networkplumber.org> and
Eric Dumazet <eric.duma...@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 <k...@microsoft.com>
Reviewed-by: Haiyang Zhang <haiya...@microsoft.com>
Cc: sta...@kernel.org
---
drivers/net/hyperv/netvsc_drv.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 939e3af..64c7816 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -467,6 +467,10 @@ 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);
--
1.7.4.1
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