Commit 18f97696 authored by Eyal Birger's avatar Eyal Birger Committed by Steffen Klassert
Browse files

xfrm: interface: enable TSO on xfrm interfaces 



Underlying xfrm output supports gso packets.
Declare support in hw_features and adapt the xmit MTU check to pass GSO
packets.

Signed-off-by: default avatarEyal Birger <eyal.birger@gmail.com>
Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
parent ede71cae

net/xfrm/xfrm_interface.c

+9 −1
Original line number Diff line number Diff line
@@ -296,7 +296,8 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) 
	}



	mtu = dst_mtu(dst);

	if (skb->len > mtu) {

	if ((!skb_is_gso(skb) && skb->len > mtu) ||

	    (skb_is_gso(skb) && !skb_gso_validate_network_len(skb, mtu))) {

		skb_dst_update_pmtu_no_confirm(skb, mtu);



		if (skb->protocol == htons(ETH_P_IPV6)) {
@@ -564,6 +565,11 @@ static void xfrmi_dev_setup(struct net_device *dev) 
	eth_broadcast_addr(dev->broadcast);

}



#define XFRMI_FEATURES (NETIF_F_SG |		\

			NETIF_F_FRAGLIST |	\

			NETIF_F_GSO_SOFTWARE |	\

			NETIF_F_HW_CSUM)



static int xfrmi_dev_init(struct net_device *dev)

{

	struct xfrm_if *xi = netdev_priv(dev);
@@ -581,6 +587,8 @@ static int xfrmi_dev_init(struct net_device *dev) 
	}



	dev->features |= NETIF_F_LLTX;

	dev->features |= XFRMI_FEATURES;

	dev->hw_features |= XFRMI_FEATURES;



	if (phydev) {

		dev->needed_headroom = phydev->needed_headroom;