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xfrm: gso partial offload support 

This patch introduces support for gso partial ESP offload.

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Boris Pismenny 2019-03-21 16:41:37 +02:00 committed by Steffen Klassert
parent e6d1407013
commit 65fd2c2afa
2 changed files with 10 additions and 3 deletions
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10
net/ipv4/esp4_offload.c
View File

@ -138,9 +138,11 @@ static struct sk_buff *esp4_gso_segment(struct sk_buff *skb,
skb->encap_hdr_csum = 1;
if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev)
if ((!(skb->dev->gso_partial_features & NETIF_F_HW_ESP) &&
!(features & NETIF_F_HW_ESP)) || x->xso.dev != skb->dev)
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
else if (!(features & NETIF_F_HW_ESP_TX_CSUM))
else if (!(features & NETIF_F_HW_ESP_TX_CSUM) &&
!(skb->dev->gso_partial_features & NETIF_F_HW_ESP_TX_CSUM))
esp_features = features & ~NETIF_F_CSUM_MASK;
xo->flags |= XFRM_GSO_SEGMENT;
@ -181,7 +183,9 @@ static int esp_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features_
if (!xo)
return -EINVAL;
if (!(features & NETIF_F_HW_ESP) || x->xso.dev != skb->dev) {
if ((!(features & NETIF_F_HW_ESP) &&
!(skb->dev->gso_partial_features & NETIF_F_HW_ESP)) ||
x->xso.dev != skb->dev) {
xo->flags |= CRYPTO_FALLBACK;
hw_offload = false;
}

3
net/xfrm/xfrm_device.c
View File

@ -78,6 +78,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
}
if (!skb->next) {
esp_features |= skb->dev->gso_partial_features;
x->outer_mode->xmit(x, skb);
xo->flags |= XFRM_DEV_RESUME;
@ -101,6 +102,8 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
do {
struct sk_buff *nskb = skb2->next;
esp_features |= skb->dev->gso_partial_features;
skb_mark_not_on_list(skb2);
xo = xfrm_offload(skb2);