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gso: Remove arbitrary checks for unsupported GSO

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In several gso_segment functions there are checks of gso_type against
a seemingly arbitrary list of SKB_GSO_* flags. This seems like an
attempt to identify unsupported GSO types, but since the stack is
the one that set these GSO types in the first place this seems
unnecessary to do. If a combination isn't valid in the first
place that stack should not allow setting it.

This is a code simplication especially for add new GSO types.

Signed-off-by: Tom Herbert <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Tom Herbert 2016-05-18 09:06:09 -07:00 • committed by David S. Miller
commit 5c7cdf339a
7 changed files with 1 additions and 102 deletions
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11
net/mpls/mpls_gso.c
View file

@ -26,15 +26,6 @@ static struct sk_buff *mpls_gso_segment(struct sk_buff *skb,
netdev_features_t mpls_features;
__be16 mpls_protocol;
if (unlikely(skb_shinfo(skb)->gso_type &
~(SKB_GSO_TCPV4 |
SKB_GSO_TCPV6 |
SKB_GSO_UDP |
SKB_GSO_DODGY |
SKB_GSO_TCP_FIXEDID |
SKB_GSO_TCP_ECN)))
goto out;
/* Setup inner SKB. */
mpls_protocol = skb->protocol;
skb->protocol = skb->inner_protocol;
@ -57,7 +48,7 @@ static struct sk_buff *mpls_gso_segment(struct sk_buff *skb,
* skb_mac_gso_segment(), an indirect caller of this function.
*/
__skb_pull(skb, skb->data - skb_mac_header(skb));
out:
return segs;
}