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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-02-18 09:03:48 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-02-21 11:40:44 +0000 |
| commit | 0f6938eb2ecc572896ef9ad11238eb2846dcaad3 (patch) | |
| tree | 43897186845711183df9817c3e9a40deae506a8f | |
| parent | Merge branch 'tcp_drop_reason' (diff) | |
| download | linux-dev-0f6938eb2ecc572896ef9ad11238eb2846dcaad3.tar.xz linux-dev-0f6938eb2ecc572896ef9ad11238eb2846dcaad3.zip | |
net: core: Use csum_replace_by_diff() and csum_sub() instead of opencoding
Open coded calculation can be avoided and replaced by the
equivalent csum_replace_by_diff() and csum_sub().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/utils.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/utils.c b/net/core/utils.c index 1f31a39236d5..938495bc1d34 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -476,9 +476,9 @@ void inet_proto_csum_replace_by_diff(__sum16 *sum, struct sk_buff *skb, __wsum diff, bool pseudohdr) { if (skb->ip_summed != CHECKSUM_PARTIAL) { - *sum = csum_fold(csum_add(diff, ~csum_unfold(*sum))); + csum_replace_by_diff(sum, diff); if (skb->ip_summed == CHECKSUM_COMPLETE && pseudohdr) - skb->csum = ~csum_add(diff, ~skb->csum); + skb->csum = ~csum_sub(diff, skb->csum); } else if (pseudohdr) { *sum = ~csum_fold(csum_add(diff, csum_unfold(*sum))); } |