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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: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Eyal Birger 2021-01-06 08:10:46 +02:00 committed by Steffen Klassert
parent ede71cae72
commit 18f976960b
1 changed files with 9 additions and 1 deletions
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10
net/xfrm/xfrm_interface.c
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@ -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;