ethtool: enable GSO and GRO by default (212b573f) · Commits · e / devices / android_kernel_sony_msm8994

include/linux/netdevice.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -984,6 +984,9 @@ struct net_device {
		NETIF_F_SG \| NETIF_F_HIGHDMA \| \
		NETIF_F_FRAGLIST)

		/* changeable features with no special hardware requirements */
		#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO \| NETIF_F_GRO)

		/* Interface index. Unique device identifier */
		int ifindex;
		int iflink;

+14 −4

Original line number	Diff line number	Diff line
		@@ -5274,6 +5274,12 @@ u32 netdev_fix_features(struct net_device *dev, u32 features)
		features &= ~NETIF_F_TSO;
		}

		/* Software GSO depends on SG. */
		if ((features & NETIF_F_GSO) && !(features & NETIF_F_SG)) {
		netdev_info(dev, "Dropping NETIF_F_GSO since no SG feature.\n");
		features &= ~NETIF_F_GSO;
		}

		/* UFO needs SG and checksumming */
		if (features & NETIF_F_UFO) {
		/* maybe split UFO into V4 and V6? */
		@@ -5430,11 +5436,15 @@ int register_netdevice(struct net_device *dev)
		if (dev->iflink == -1)
		dev->iflink = dev->ifindex;

		dev->features = netdev_fix_features(dev, dev->features);
		/* Enable software offloads by default - will be stripped in
		* netdev_fix_features() if not supported. */
		dev->features \|= NETIF_F_SOFT_FEATURES;

		/* Enable software GSO if SG is supported. */
		if (dev->features & NETIF_F_SG)
		dev->features \|= NETIF_F_GSO;
		/* Avoid warning from netdev_fix_features() for GSO without SG */
		if (!(dev->features & NETIF_F_SG))
		dev->features &= ~NETIF_F_GSO;

		dev->features = netdev_fix_features(dev, dev->features);

		/* Enable GRO and NETIF_F_HIGHDMA for vlans by default,
		* vlan_dev_init() will do the dev->features check, so these features