A number of components in DPDK have optional AVX-512 or other vector code paths which can be selected at runtime. Rather than having each component provide its own mechanism to select a code path, this patchset adds support for a single setting to control what code paths are used. This can be used to enable some non-default code paths e.g. ones using AVX-512, but also to limit the code paths to certain vector widths, or to scalar code only, which is useful for testing.
The max SIMD bitwidth setting can be set by the app itself through use of the available API, or can be overriden by a commandline argument passed by the user. Ciara Power (12): eal: add max SIMD bitwidth eal: add default SIMD bitwidth values net/i40e: add checks for max SIMD bitwidth net/axgbe: add checks for max SIMD bitwidth net/bnxt: add checks for max SIMD bitwidth net/enic: add checks for max SIMD bitwidth net/fm10k: add checks for max SIMD bitwidth net/iavf: add checks for max SIMD bitwidth net/ice: add checks for max SIMD bitwidth net/ixgbe: add checks for max SIMD bitwidth net/mlx5: add checks for max SIMD bitwidth net/virtio: add checks for max SIMD bitwidth drivers/net/axgbe/axgbe_rxtx.c | 3 +- drivers/net/bnxt/bnxt_ethdev.c | 6 ++- drivers/net/enic/enic_rxtx_vec_avx2.c | 3 +- drivers/net/fm10k/fm10k_ethdev.c | 11 ++-- drivers/net/i40e/i40e_rxtx.c | 19 ++++--- drivers/net/iavf/iavf_rxtx.c | 16 +++--- drivers/net/ice/ice_rxtx.c | 20 ++++--- drivers/net/ixgbe/ixgbe_rxtx.c | 7 ++- drivers/net/mlx5/mlx5_ethdev.c | 3 +- drivers/net/virtio/virtio_ethdev.c | 12 +++-- lib/librte_eal/arm/include/rte_vect.h | 2 + lib/librte_eal/common/eal_common_options.c | 63 ++++++++++++++++++++++ lib/librte_eal/common/eal_internal_cfg.h | 8 +++ lib/librte_eal/common/eal_options.h | 2 + lib/librte_eal/include/generic/rte_vect.h | 2 + lib/librte_eal/include/rte_eal.h | 31 +++++++++++ lib/librte_eal/ppc/include/rte_vect.h | 2 + lib/librte_eal/rte_eal_version.map | 4 ++ lib/librte_eal/x86/include/rte_vect.h | 2 + 19 files changed, 184 insertions(+), 32 deletions(-) -- 2.17.1
