netdev - [PATCH net-next v2 10/10] net: qualcomm: rmnet: Add support for GSO

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Message-Id: <1515015787-6713-11-git-send-email-subashab@codeaurora.org>
Date:   Wed,  3 Jan 2018 14:43:07 -0700
From:   Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
To:     davem@...emloft.net, netdev@...r.kernel.org, lkp@...el.com
Cc:     Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
Subject: [PATCH net-next v2 10/10] net: qualcomm: rmnet: Add support for GSO

Real devices may support scatter gather(SG), so enable SG on rmnet
devices to use GSO. GSO reduces CPU cycles by 20% for a rate of
146Mpbs for a single stream TCP connection.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
index f7f57ce..570a227 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c
@@ -190,6 +190,7 @@ int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev,
 
 	rmnet_dev->hw_features = NETIF_F_RXCSUM;
 	rmnet_dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	rmnet_dev->hw_features |= NETIF_F_SG;
 
 	rc = register_netdevice(rmnet_dev);
 	if (!rc) {
-- 
1.9.1