This patchset makes two significant enhancements to the CRC modules of
the rte_net library:
1) Adds run-time selection of the optimal architecture-specific CRC path.
Previously the selection was solely made at compile-time, meaning it
could only be built and run on the same generation of CPU. Adding
run-time selection ability means this can be used from distro packages
and/or DPDK can be compiled on an older CPU and run on a newer CPU.
2) Adds an optimized CRC implementation based on the AVX512 and
VPCLMULQDQ instruction sets.
For further details, please see the commit messages of the individual
patches.
v2:
* Added support for run-time selection of optimal architecture-specific
CRC, based on v1 review comment.
* Added full working AVX512/VPCLMULDQD support for CRC32-Ethernet and
CRC16-CCITT.
v1:
* Initial version, with incomplete AVX512/VPCLMULDQD support for
CRC32-Ethernet only.
Mairtin o Loingsigh (2):
net: add run-time architecture specific CRC selection
net: add support for AVX512/VPCLMULQDQ based CRC
app/test/test_crc.c | 11 +-
config/x86/meson.build | 6 +-
doc/guides/rel_notes/release_20_11.rst | 6 +
lib/librte_net/meson.build | 89 ++++-
lib/librte_net/net_crc.h | 45 +++
lib/librte_net/net_crc_avx512.c | 424 ++++++++++++++++++++++
lib/librte_net/{net_crc_neon.h => net_crc_neon.c} | 27 +-
lib/librte_net/{net_crc_sse.h => net_crc_sse.c} | 34 +-
lib/librte_net/rte_net_crc.c | 100 +++--
lib/librte_net/rte_net_crc.h | 4 +-
10 files changed, 674 insertions(+), 72 deletions(-)
create mode 100644 lib/librte_net/net_crc.h
create mode 100644 lib/librte_net/net_crc_avx512.c
rename lib/librte_net/{net_crc_neon.h => net_crc_neon.c} (95%)
rename lib/librte_net/{net_crc_sse.h => net_crc_sse.c} (94%)
--
2.12.3
