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net: use skb_crc32c() in skb_crc32c_csum_help()

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Instead of calling __skb_checksum() with a skb_checksum_ops struct that
does CRC32C, just call the new function skb_crc32c().  This is faster
and simpler.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://patch.msgid.link/20250519175012.36581-4-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Biggers
2025-05-19 10:50:05 -07:00
committed by Jakub Kicinski
parent a5bd029c73
commit 86edc94da1
1 changed files with 3 additions and 5 deletions
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8
net/core/dev.c
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@@ -3599,7 +3599,7 @@ EXPORT_SYMBOL(skb_checksum_help);
#ifdef CONFIG_NET_CRC32C
int skb_crc32c_csum_help(struct sk_buff *skb)
{
__le32 crc32c_csum;
u32 crc;
int ret = 0, offset, start;
if (skb->ip_summed != CHECKSUM_PARTIAL)
@@ -3627,10 +3627,8 @@ int skb_crc32c_csum_help(struct sk_buff *skb)
if (ret)
goto out;
crc32c_csum = cpu_to_le32(~__skb_checksum(skb, start,
skb->len - start, ~(__u32)0,
crc32c_csum_stub));
*(__le32 *)(skb->data + offset) = crc32c_csum;
crc = ~skb_crc32c(skb, start, skb->len - start, ~0);
*(__le32 *)(skb->data + offset) = cpu_to_le32(crc);
skb_reset_csum_not_inet(skb);
out:
return ret;