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esp: check the NETIF_F_HW_ESP_TX_CSUM bit before segmenting

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If I understand correctly, we should not be asking for a
checksum offload on an ipsec packet if the netdev isn't
advertising NETIF_F_HW_ESP_TX_CSUM.  In that case, we should
clear the NETIF_F_CSUM_MASK bits.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Shannon Nelson 2018-02-26 14:28:19 -08:00 • committed by Steffen Klassert
parent f8c3d0dda4
commit 5211fcfb81
2 changed files with 4 additions and 0 deletions
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2
net/ipv4/esp4_offload.c
View file

@ -138,6 +138,8 @@ static struct sk_buff *esp4_gso_segment(struct sk_buff *skb,
if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle ||
(x->xso.dev != skb->dev))
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
else if (!(features & NETIF_F_HW_ESP_TX_CSUM))
esp_features = features & ~NETIF_F_CSUM_MASK;
xo->flags |= XFRM_GSO_SEGMENT;

2
net/ipv6/esp6_offload.c
View file

@ -165,6 +165,8 @@ static struct sk_buff *esp6_gso_segment(struct sk_buff *skb,
if (!(features & NETIF_F_HW_ESP) || !x->xso.offload_handle ||
(x->xso.dev != skb->dev))
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
else if (!(features & NETIF_F_HW_ESP_TX_CSUM))
esp_features = features & ~NETIF_F_CSUM_MASK;
xo->flags |= XFRM_GSO_SEGMENT;