diff options
Diffstat (limited to 'src/plugins/dpdk/device/init.c')
| -rw-r--r-- | src/plugins/dpdk/device/init.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c index cf32687289a..7f57c6ada84 100644 --- a/src/plugins/dpdk/device/init.c +++ b/src/plugins/dpdk/device/init.c @@ -1136,6 +1136,25 @@ dpdk_bind_vmbus_devices_to_uio (dpdk_config_main_t * conf) /* *INDENT-ON* */ } +uword +unformat_max_simd_bitwidth (unformat_input_t *input, va_list *va) +{ + uword *max_simd_bitwidth = va_arg (*va, uword *); + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (!unformat (input, "%u", max_simd_bitwidth)) + goto error; + + if (*max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_256 && + *max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_512) + goto error; + } + return 1; +error: + return 0; +} + static clib_error_t * dpdk_device_config (dpdk_config_main_t *conf, void *addr, dpdk_device_addr_type_t addr_type, unformat_input_t *input, @@ -1347,7 +1366,9 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input) else if (unformat (input, "no-multi-seg")) conf->no_multi_seg = 1; - + else if (unformat (input, "max-simd-bitwidth %U", + unformat_max_simd_bitwidth, &conf->max_simd_bitwidth)) + ; else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input, &sub_input)) { @@ -1691,8 +1712,14 @@ dpdk_config (vlib_main_t * vm, unformat_input_t * input) (char **) conf->eal_init_args); /* enable the AVX-512 vPMDs in DPDK */ - if (clib_cpu_supports_avx512_bitalg ()) + if (clib_cpu_supports_avx512_bitalg () && + conf->max_simd_bitwidth == DPDK_MAX_SIMD_BITWIDTH_DEFAULT) rte_vect_set_max_simd_bitwidth (RTE_VECT_SIMD_512); + else if (conf->max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_DEFAULT) + rte_vect_set_max_simd_bitwidth (conf->max_simd_bitwidth == + DPDK_MAX_SIMD_BITWIDTH_256 ? + RTE_VECT_SIMD_256 : + RTE_VECT_SIMD_512); /* lazy umount hugepages */ umount2 ((char *) huge_dir_path, MNT_DETACH); |