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| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2018-05-07 11:08:34 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-05-08 22:30:06 -0400 |
| commit | 9a0d41b3598ff62ecb26661bbfb1d523586cdea3 (patch) | |
| tree | ee974ce5c61f56a2b9f64ed3b39fe2159308f049 /include/net/udp.h | |
| parent | udp: Do not pass MSS as parameter to GSO segmentation (diff) | |
| download | linux-dev-9a0d41b3598ff62ecb26661bbfb1d523586cdea3.tar.xz linux-dev-9a0d41b3598ff62ecb26661bbfb1d523586cdea3.zip | |
udp: Do not pass checksum as a parameter to GSO segmentation
This patch is meant to allow us to avoid having to recompute the checksum
from scratch and have it passed as a parameter.
Instead of taking that approach we can take advantage of the fact that the
length that was used to compute the existing checksum is included in the
UDP header.
Finally to avoid the need to invert the result we can just call csum16_add
and csum16_sub directly. By doing this we can avoid a number of
instructions in the loop that is handling segmentation.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/udp.h')
| -rw-r--r-- | include/net/udp.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index 8bd83b044ecd..9289b6425032 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -175,8 +175,7 @@ struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb, int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup); struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb, - netdev_features_t features, - __sum16 check); + netdev_features_t features); static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb) { |