qed: Reimplement qed_mcast_bin_from_mac() using library functions

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The calculation done by qed_calc_crc32c() is the standard
least-significant-bit-first CRC-32C except it uses
most-significant-bit-first order for the actual CRC variable.  That is
equivalent to bit-reflecting the input and output CRC.  Replace it with
equivalent calls to the corresponding library functions.

Tested with a simple userspace program which tested that the old and new
implementations of qed_mcast_bin_from_mac() produce the same outputs.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20260316221453.66078-1-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Eric Biggers 2026-03-16 15:14:53 -07:00 • committed by Jakub Kicinski

parent 4455a30b04

commit d5516452a3

1 changed files with 11 additions and 42 deletions

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53

drivers/net/ethernet/qlogic/qed/qed_l2.c

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