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RDMA/siw: use skb_crc32c() instead of __skb_checksum()

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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.

Acked-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://patch.msgid.link/20250519175012.36581-5-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Biggers 2025-05-19 10:50:06 -07:00 committed by Jakub Kicinski
parent 86edc94da1
commit 62673b7df9
2 changed files with 2 additions and 21 deletions
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1
drivers/infiniband/sw/siw/Kconfig
View File

@ -3,6 +3,7 @@ config RDMA_SIW
depends on INET && INFINIBAND
depends on INFINIBAND_VIRT_DMA
select CRC32
select NET_CRC32C
help
This driver implements the iWARP RDMA transport over
the Linux TCP/IP network stack. It enables a system with a

22
drivers/infiniband/sw/siw/siw.h
View File

@ -693,29 +693,9 @@ static inline void siw_crc_oneshot(const void *data, size_t len, u8 out[4])
return siw_crc_final(&crc, out);
}
static inline __wsum siw_csum_update(const void *buff, int len, __wsum sum)
{
return (__force __wsum)crc32c((__force __u32)sum, buff, len);
}
static inline __wsum siw_csum_combine(__wsum csum, __wsum csum2, int offset,
int len)
{
return (__force __wsum)crc32c_combine((__force __u32)csum,
(__force __u32)csum2, len);
}
static inline void siw_crc_skb(struct siw_rx_stream *srx, unsigned int len)
{
const struct skb_checksum_ops siw_cs_ops = {
.update = siw_csum_update,
.combine = siw_csum_combine,
};
__wsum crc = (__force __wsum)srx->mpa_crc;
crc = __skb_checksum(srx->skb, srx->skb_offset, len, crc,
&siw_cs_ops);
srx->mpa_crc = (__force u32)crc;
srx->mpa_crc = skb_crc32c(srx->skb, srx->skb_offset, len, srx->mpa_crc);
}
#define siw_dbg(ibdev, fmt, ...) \