diff options
| -rw-r--r-- | src/plugins/crypto_native/CMakeLists.txt | 34 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes.h | 131 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes_cbc.c | 357 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes_cbc_aesni.h | 381 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes_cbc_neon.h | 208 | ||||
| -rw-r--r-- | src/plugins/crypto_native/crypto_native.h | 1 | ||||
| -rw-r--r-- | src/plugins/crypto_native/main.c | 11 | ||||
| -rw-r--r-- | src/vppinfra/vector_neon.h | 6 |
8 files changed, 762 insertions, 367 deletions
diff --git a/src/plugins/crypto_native/CMakeLists.txt b/src/plugins/crypto_native/CMakeLists.txt index cd701ec7d55..9fc3e7d4090 100644 --- a/src/plugins/crypto_native/CMakeLists.txt +++ b/src/plugins/crypto_native/CMakeLists.txt @@ -11,27 +11,37 @@ # See the License for the specific language governing permissions and # limitations under the License. -if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*") - return() +if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*") + list(APPEND VARIANTS "sse42\;-march=silvermont") + list(APPEND VARIANTS "avx2\;-march=core-avx2") + if(compiler_flag_march_skylake_avx512) + list(APPEND VARIANTS "avx512\;-march=skylake-avx512") + endif() + if(compiler_flag_march_icelake_client) + list(APPEND VARIANTS "vaesni\;-march=icelake-client") + endif() + set (COMPILE_FILES aes_cbc.c aes_gcm.c) + set (COMPILE_OPTS -Wall -fno-common -maes) endif() -add_vpp_plugin(crypto_native SOURCES main.c) - -list(APPEND VARIANTS "sse42\;-march=silvermont") -list(APPEND VARIANTS "avx2\;-march=core-avx2") -if(compiler_flag_march_skylake_avx512) - list(APPEND VARIANTS "avx512\;-march=skylake-avx512") +if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)") + list(APPEND VARIANTS "armv8\;-march=native") + set (COMPILE_FILES aes_cbc.c) + set (COMPILE_OPTS -Wall -fno-common) endif() -if(compiler_flag_march_icelake_client) - list(APPEND VARIANTS "vaesni\;-march=icelake-client") + +if (NOT VARIANTS) + return() endif() +add_vpp_plugin(crypto_native SOURCES main.c) + foreach(VARIANT ${VARIANTS}) list(GET VARIANT 0 v) list(GET VARIANT 1 f) set(l crypto_native_${v}) - add_library(${l} OBJECT aes_cbc.c aes_gcm.c) + add_library(${l} OBJECT ${COMPILE_FILES}) set_target_properties(${l} PROPERTIES POSITION_INDEPENDENT_CODE ON) - target_compile_options(${l} PUBLIC ${f} -Wall -fno-common -maes) + target_compile_options(${l} PUBLIC ${f} ${COMPILE_OPTS}) target_sources(crypto_native_plugin PRIVATE $<TARGET_OBJECTS:${l}>) endforeach() diff --git a/src/plugins/crypto_native/aes.h b/src/plugins/crypto_native/aes.h index 721ad5da038..85d6f7916f8 100644 --- a/src/plugins/crypto_native/aes.h +++ b/src/plugins/crypto_native/aes.h @@ -1,6 +1,6 @@ /* *------------------------------------------------------------------ - * Copyright (c) 2019 Cisco and/or its affiliates. + * Copyright (c) 2020 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: @@ -28,6 +28,8 @@ typedef enum #define AES_KEY_ROUNDS(x) (10 + x * 2) #define AES_KEY_BYTES(x) (16 + x * 8) +#ifdef __x86_64__ + static_always_inline u8x16 aes_block_load (u8 * p) { @@ -191,6 +193,133 @@ aes256_key_expand (u8x16 * key_schedule, u8 * key) aes256_key_assist (k, 12, _mm_aeskeygenassist_si128 (k[11], 0x20)); aes256_key_assist (k, 14, _mm_aeskeygenassist_si128 (k[13], 0x40)); } +#endif + +#ifdef __aarch64__ + +static_always_inline u8x16 +aes_inv_mix_column (u8x16 a) +{ + return vaesimcq_u8 (a); +} + +static const u8x16 aese_prep_mask1 = + { 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12 }; +static const u8x16 aese_prep_mask2 = + { 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15 }; + +static inline void +aes128_key_expand_round_neon (u8x16 * rk, u32 rcon) +{ + u8x16 r, t, last_round = rk[-1], z = { }; + r = vqtbl1q_u8 (last_round, aese_prep_mask1); + r = vaeseq_u8 (r, z); + r ^= (u8x16) vdupq_n_u32 (rcon); + r ^= last_round; + r ^= t = vextq_u8 (z, last_round, 12); + r ^= t = vextq_u8 (z, t, 12); + r ^= vextq_u8 (z, t, 12); + rk[0] = r; +} + +void +aes128_key_expand (u8x16 * rk, const u8 * k) +{ + rk[0] = vld1q_u8 (k); + aes128_key_expand_round_neon (rk + 1, 0x01); + aes128_key_expand_round_neon (rk + 2, 0x02); + aes128_key_expand_round_neon (rk + 3, 0x04); + aes128_key_expand_round_neon (rk + 4, 0x08); + aes128_key_expand_round_neon (rk + 5, 0x10); + aes128_key_expand_round_neon (rk + 6, 0x20); + aes128_key_expand_round_neon (rk + 7, 0x40); + aes128_key_expand_round_neon (rk + 8, 0x80); + aes128_key_expand_round_neon (rk + 9, 0x1b); + aes128_key_expand_round_neon (rk + 10, 0x36); +} + +static inline void +aes192_key_expand_round_neon (u8x8 * rk, u32 rcon) +{ + u8x8 r, last_round = rk[-1], z = { }; + u8x16 r2, z2 = { }; + + r2 = (u8x16) vdupq_lane_u64 ((uint64x1_t) last_round, 0); + r2 = vqtbl1q_u8 (r2, aese_prep_mask1); + r2 = vaeseq_u8 (r2, z2); + r2 ^= (u8x16) vdupq_n_u32 (rcon); + + r = (u8x8) vdup_laneq_u64 ((u64x2) r2, 0); + r ^= rk[-3]; + r ^= vext_u8 (z, rk[-3], 4); + rk[0] = r; + + r = rk[-2] ^ vext_u8 (r, z, 4); + r ^= vext_u8 (z, r, 4); + rk[1] = r; + + if (rcon == 0x80) + return; + + r = rk[-1] ^ vext_u8 (r, z, 4); + r ^= vext_u8 (z, r, 4); + rk[2] = r; +} + +void +aes192_key_expand (u8x16 * ek, const u8 * k) +{ + u8x8 *rk = (u8x8 *) ek; + ek[0] = vld1q_u8 (k); + rk[2] = vld1_u8 (k + 16); + aes192_key_expand_round_neon (rk + 3, 0x01); + aes192_key_expand_round_neon (rk + 6, 0x02); + aes192_key_expand_round_neon (rk + 9, 0x04); + aes192_key_expand_round_neon (rk + 12, 0x08); + aes192_key_expand_round_neon (rk + 15, 0x10); + aes192_key_expand_round_neon (rk + 18, 0x20); + aes192_key_expand_round_neon (rk + 21, 0x40); + aes192_key_expand_round_neon (rk + 24, 0x80); +} + + +static inline void +aes256_key_expand_round_neon (u8x16 * rk, u32 rcon) +{ + u8x16 r, t, z = { }; + + r = vqtbl1q_u8 (rk[-1], rcon ? aese_prep_mask1 : aese_prep_mask2); + r = vaeseq_u8 (r, z); + if (rcon) + r ^= (u8x16) vdupq_n_u32 (rcon); + r ^= rk[-2]; + r ^= t = vextq_u8 (z, rk[-2], 12); + r ^= t = vextq_u8 (z, t, 12); + r ^= vextq_u8 (z, t, 12); + rk[0] = r; +} + +void +aes256_key_expand (u8x16 * rk, const u8 * k) +{ + rk[0] = vld1q_u8 (k); + rk[1] = vld1q_u8 (k + 16); + aes256_key_expand_round_neon (rk + 2, 0x01); + aes256_key_expand_round_neon (rk + 3, 0); + aes256_key_expand_round_neon (rk + 4, 0x02); + aes256_key_expand_round_neon (rk + 5, 0); + aes256_key_expand_round_neon (rk + 6, 0x04); + aes256_key_expand_round_neon (rk + 7, 0); + aes256_key_expand_round_neon (rk + 8, 0x08); + aes256_key_expand_round_neon (rk + 9, 0); + aes256_key_expand_round_neon (rk + 10, 0x10); + aes256_key_expand_round_neon (rk + 11, 0); + aes256_key_expand_round_neon (rk + 12, 0x20); + aes256_key_expand_round_neon (rk + 13, 0); + aes256_key_expand_round_neon (rk + 14, 0x40); +} + +#endif static_always_inline void aes_key_expand (u8x16 * key_schedule, u8 * key, aes_key_size_t ks) diff --git a/src/plugins/crypto_native/aes_cbc.c b/src/plugins/crypto_native/aes_cbc.c index 97278a01498..aeec1ea3186 100644 --- a/src/plugins/crypto_native/aes_cbc.c +++ b/src/plugins/crypto_native/aes_cbc.c @@ -18,7 +18,6 @@ #include <vlib/vlib.h> #include <vnet/plugin/plugin.h> #include <vnet/crypto/crypto.h> -#include <x86intrin.h> #include <crypto_native/crypto_native.h> #include <crypto_native/aes.h> @@ -36,358 +35,8 @@ typedef struct #endif } aes_cbc_key_data_t; -static_always_inline u8x16 __clib_unused -xor3 (u8x16 a, u8x16 b, u8x16 c) -{ -#if __AVX512F__ - return (u8x16) _mm_ternarylogic_epi32 ((__m128i) a, (__m128i) b, - (__m128i) c, 0x96); -#endif - return a ^ b ^ c; -} - -#if __VAES__ -static_always_inline __m512i -xor3_x4 (__m512i a, __m512i b, __m512i c) -{ - return _mm512_ternarylogic_epi32 (a, b, c, 0x96); -} - -static_always_inline __m512i -aes_block_load_x4 (u8 * src[], int i) -{ - __m512i r = { }; - r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[0] + i), 0); - r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[1] + i), 1); - r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[2] + i), 2); - r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[3] + i), 3); - return r; -} - -static_always_inline void -aes_block_store_x4 (u8 * dst[], int i, __m512i r) -{ - aes_block_store (dst[0] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 0)); - aes_block_store (dst[1] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 1)); - aes_block_store (dst[2] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 2)); - aes_block_store (dst[3] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 3)); -} -#endif - -static_always_inline void __clib_unused -aes_cbc_dec (u8x16 * k, u8 * src, u8 * dst, u8 * iv, int count, - aes_key_size_t rounds) -{ - u8x16 r0, r1, r2, r3, c0, c1, c2, c3, f; - int i; - - f = aes_block_load (iv); - - while (count >= 64) - { - _mm_prefetch (src + 128, _MM_HINT_T0); - _mm_prefetch (dst + 128, _MM_HINT_T0); - - c0 = aes_block_load (src); - c1 = aes_block_load (src + 16); - c2 = aes_block_load (src + 32); - c3 = aes_block_load (src + 48); - - r0 = c0 ^ k[0]; - r1 = c1 ^ k[0]; - r2 = c2 ^ k[0]; - r3 = c3 ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r0 = aes_dec_round (r0, k[i]); - r1 = aes_dec_round (r1, k[i]); - r2 = aes_dec_round (r2, k[i]); - r3 = aes_dec_round (r3, k[i]); - } - - r0 = aes_dec_last_round (r0, k[i]); - r1 = aes_dec_last_round (r1, k[i]); - r2 = aes_dec_last_round (r2, k[i]); - r3 = aes_dec_last_round (r3, k[i]); - - aes_block_store (dst, r0 ^ f); - aes_block_store (dst + 16, r1 ^ c0); - aes_block_store (dst + 32, r2 ^ c1); - aes_block_store (dst + 48, r3 ^ c2); - - f = c3; - - count -= 64; - src += 64; - dst += 64; - } - - while (count > 0) - { - c0 = aes_block_load (src); - r0 = c0 ^ k[0]; - for (i = 1; i < rounds; i++) - r0 = aes_dec_round (r0, k[i]); - r0 = aes_dec_last_round (r0, k[i]); - aes_block_store (dst, r0 ^ f); - f = c0; - count -= 16; - src += 16; - dst += 16; - } -} - -#ifdef __VAES__ -static_always_inline void -vaes_cbc_dec (__m512i * k, u8 * src, u8 * dst, u8 * iv, int count, - aes_key_size_t rounds) -{ - __m512i permute = { 6, 7, 8, 9, 10, 11, 12, 13 }; - __m512i r0, r1, r2, r3, c0, c1, c2, c3, f = { }; - __mmask8 m; - int i, n_blocks = count >> 4; - - f = _mm512_mask_loadu_epi64 (f, 0xc0, (__m512i *) (iv - 48)); - - while (n_blocks >= 16) - { - c0 = _mm512_loadu_si512 ((__m512i *) src); - c1 = _mm512_loadu_si512 ((__m512i *) (src + 64)); - c2 = _mm512_loadu_si512 ((__m512i *) (src + 128)); - c3 = _mm512_loadu_si512 ((__m512i *) (src + 192)); - - r0 = c0 ^ k[0]; - r1 = c1 ^ k[0]; - r2 = c2 ^ k[0]; - r3 = c3 ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r0 = _mm512_aesdec_epi128 (r0, k[i]); - r1 = _mm512_aesdec_epi128 (r1, k[i]); - r2 = _mm512_aesdec_epi128 (r2, k[i]); - r3 = _mm512_aesdec_epi128 (r3, k[i]); - } - - r0 = _mm512_aesdeclast_epi128 (r0, k[i]); - r1 = _mm512_aesdeclast_epi128 (r1, k[i]); - r2 = _mm512_aesdeclast_epi128 (r2, k[i]); - r3 = _mm512_aesdeclast_epi128 (r3, k[i]); - - r0 ^= _mm512_permutex2var_epi64 (f, permute, c0); - _mm512_storeu_si512 ((__m512i *) dst, r0); - - r1 ^= _mm512_permutex2var_epi64 (c0, permute, c1); - _mm512_storeu_si512 ((__m512i *) (dst + 64), r1); - - r2 ^= _mm512_permutex2var_epi64 (c1, permute, c2); - _mm512_storeu_si512 ((__m512i *) (dst + 128), r2); - - r3 ^= _mm512_permutex2var_epi64 (c2, permute, c3); - _mm512_storeu_si512 ((__m512i *) (dst + 192), r3); - f = c3; - - n_blocks -= 16; - src += 256; - dst += 256; - } - - while (n_blocks > 0) - { - m = (1 << (n_blocks * 2)) - 1; - c0 = _mm512_mask_loadu_epi64 (c0, m, (__m512i *) src); - f = _mm512_permutex2var_epi64 (f, permute, c0); - r0 = c0 ^ k[0]; - for (i = 1; i < rounds; i++) - r0 = _mm512_aesdec_epi128 (r0, k[i]); - r0 = _mm512_aesdeclast_epi128 (r0, k[i]); - _mm512_mask_storeu_epi64 ((__m512i *) dst, m, r0 ^ f); - f = c0; - n_blocks -= 4; - src += 64; - dst += 64; - } -} -#endif - -#ifdef __VAES__ -#define N 16 -#define u32xN u32x16 -#define u32xN_min_scalar u32x16_min_scalar -#define u32xN_is_all_zero u32x16_is_all_zero -#else -#define N 4 -#define u32xN u32x4 -#define u32xN_min_scalar u32x4_min_scalar -#define u32xN_is_all_zero u32x4_is_all_zero -#endif - -static_always_inline u32 -aesni_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], - u32 n_ops, aes_key_size_t ks) -{ - crypto_native_main_t *cm = &crypto_native_main; - crypto_native_per_thread_data_t *ptd = - vec_elt_at_index (cm->per_thread_data, vm->thread_index); - int rounds = AES_KEY_ROUNDS (ks); - u8 dummy[8192]; - u32 i, j, count, n_left = n_ops; - u32xN dummy_mask = { }; - u32xN len = { }; - vnet_crypto_key_index_t key_index[N]; - u8 *src[N] = { }; - u8 *dst[N] = { }; - /* *INDENT-OFF* */ - union - { - u8x16 x1[N]; - __m512i x4[N / 4]; - } r = { }, k[15] = { }; - /* *INDENT-ON* */ - - for (i = 0; i < N; i++) - key_index[i] = ~0; - -more: - for (i = 0; i < N; i++) - if (len[i] == 0) - { - if (n_left == 0) - { - /* no more work to enqueue, so we are enqueueing dummy buffer */ - src[i] = dst[i] = dummy; - len[i] = sizeof (dummy); - dummy_mask[i] = 0; - } - else - { - if (ops[0]->flags & VNET_CRYPTO_OP_FLAG_INIT_IV) - { - r.x1[i] = ptd->cbc_iv[i]; - aes_block_store (ops[0]->iv, r.x1[i]); - ptd->cbc_iv[i] = aes_enc_round (r.x1[i], r.x1[i]); - } - else - r.x1[i] = aes_block_load (ops[0]->iv); - - src[i] = ops[0]->src; - dst[i] = ops[0]->dst; - len[i] = ops[0]->len; - dummy_mask[i] = ~0; - if (key_index[i] != ops[0]->key_index) - { - aes_cbc_key_data_t *kd; - key_index[i] = ops[0]->key_index; - kd = (aes_cbc_key_data_t *) cm->key_data[key_index[i]]; - for (j = 0; j < rounds + 1; j++) - k[j].x1[i] = kd->encrypt_key[j]; - } - ops[0]->status = VNET_CRYPTO_OP_STATUS_COMPLETED; - n_left--; - ops++; - } - } - - count = u32xN_min_scalar (len); - - ASSERT (count % 16 == 0); - - for (i = 0; i < count; i += 16) - { -#ifdef __VAES__ - r.x4[0] = xor3_x4 (r.x4[0], aes_block_load_x4 (src, i), k[0].x4[0]); - r.x4[1] = xor3_x4 (r.x4[1], aes_block_load_x4 (src, i), k[0].x4[1]); - r.x4[2] = xor3_x4 (r.x4[2], aes_block_load_x4 (src, i), k[0].x4[2]); - r.x4[3] = xor3_x4 (r.x4[3], aes_block_load_x4 (src, i), k[0].x4[3]); - - for (j = 1; j < rounds; j++) - { - r.x4[0] = _mm512_aesenc_epi128 (r.x4[0], k[j].x4[0]); - r.x4[1] = _mm512_aesenc_epi128 (r.x4[1], k[j].x4[1]); - r.x4[2] = _mm512_aesenc_epi128 (r.x4[2], k[j].x4[2]); - r.x4[3] = _mm512_aesenc_epi128 (r.x4[3], k[j].x4[3]); - } - r.x4[0] = _mm512_aesenclast_epi128 (r.x4[0], k[j].x4[0]); - r.x4[1] = _mm512_aesenclast_epi128 (r.x4[1], k[j].x4[1]); - r.x4[2] = _mm512_aesenclast_epi128 (r.x4[2], k[j].x4[2]); - r.x4[3] = _mm512_aesenclast_epi128 (r.x4[3], k[j].x4[3]); - - aes_block_store_x4 (dst, i, r.x4[0]); - aes_block_store_x4 (dst + 4, i, r.x4[1]); - aes_block_store_x4 (dst + 8, i, r.x4[2]); - aes_block_store_x4 (dst + 12, i, r.x4[3]); -#else - r.x1[0] = xor3 (r.x1[0], aes_block_load (src[0] + i), k[0].x1[0]); - r.x1[1] = xor3 (r.x1[1], aes_block_load (src[1] + i), k[0].x1[1]); - r.x1[2] = xor3 (r.x1[2], aes_block_load (src[2] + i), k[0].x1[2]); - r.x1[3] = xor3 (r.x1[3], aes_block_load (src[3] + i), k[0].x1[3]); - - for (j = 1; j < rounds; j++) - { - r.x1[0] = aes_enc_round (r.x1[0], k[j].x1[0]); - r.x1[1] = aes_enc_round (r.x1[1], k[j].x1[1]); - r.x1[2] = aes_enc_round (r.x1[2], k[j].x1[2]); - r.x1[3] = aes_enc_round (r.x1[3], k[j].x1[3]); - } - - r.x1[0] = aes_enc_last_round (r.x1[0], k[j].x1[0]); - r.x1[1] = aes_enc_last_round (r.x1[1], k[j].x1[1]); - r.x1[2] = aes_enc_last_round (r.x1[2], k[j].x1[2]); - r.x1[3] = aes_enc_last_round (r.x1[3], k[j].x1[3]); - - aes_block_store (dst[0] + i, r.x1[0]); - aes_block_store (dst[1] + i, r.x1[1]); - aes_block_store (dst[2] + i, r.x1[2]); - aes_block_store (dst[3] + i, r.x1[3]); -#endif - } - - for (i = 0; i < N; i++) - { - src[i] += count; - dst[i] += count; - len[i] -= count; - } - - if (n_left > 0) - goto more; - - if (!u32xN_is_all_zero (len & dummy_mask)) - goto more; - - return n_ops; -} - -static_always_inline u32 -aesni_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], - u32 n_ops, aes_key_size_t ks) -{ - crypto_native_main_t *cm = &crypto_native_main; - int rounds = AES_KEY_ROUNDS (ks); - vnet_crypto_op_t *op = ops[0]; - aes_cbc_key_data_t *kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; - u32 n_left = n_ops; - - ASSERT (n_ops >= 1); - -decrypt: -#ifdef __VAES__ - vaes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds); -#else - aes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds); -#endif - op->status = VNET_CRYPTO_OP_STATUS_COMPLETED; - - if (--n_left) - { - op += 1; - kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; - goto decrypt; - } - - return n_ops; -} +#include <crypto_native/aes_cbc_aesni.h> +#include <crypto_native/aes_cbc_neon.h> static_always_inline void * aesni_cbc_key_exp (vnet_crypto_key_t * key, aes_key_size_t ks) @@ -431,6 +80,8 @@ clib_error_t * crypto_native_aes_cbc_init_vaes (vlib_main_t * vm) #elif __AVX512F__ crypto_native_aes_cbc_init_avx512 (vlib_main_t * vm) +#elif __aarch64__ +crypto_native_aes_cbc_init_neon (vlib_main_t * vm) #elif __AVX2__ crypto_native_aes_cbc_init_avx2 (vlib_main_t * vm) #else diff --git a/src/plugins/crypto_native/aes_cbc_aesni.h b/src/plugins/crypto_native/aes_cbc_aesni.h new file mode 100644 index 00000000000..206dace5d56 --- /dev/null +++ b/src/plugins/crypto_native/aes_cbc_aesni.h @@ -0,0 +1,381 @@ +/* + *------------------------------------------------------------------ + * Copyright (c) 2020 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#ifdef __x86_64__ + +static_always_inline u8x16 __clib_unused +xor3 (u8x16 a, u8x16 b, u8x16 c) +{ +#if __AVX512F__ + return (u8x16) _mm_ternarylogic_epi32 ((__m128i) a, (__m128i) b, + (__m128i) c, 0x96); +#endif + return a ^ b ^ c; +} + +#if __VAES__ +static_always_inline __m512i +xor3_x4 (__m512i a, __m512i b, __m512i c) +{ + return _mm512_ternarylogic_epi32 (a, b, c, 0x96); +} + +static_always_inline __m512i +aes_block_load_x4 (u8 * src[], int i) +{ + __m512i r = { }; + r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[0] + i), 0); + r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[1] + i), 1); + r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[2] + i), 2); + r = _mm512_inserti64x2 (r, (__m128i) aes_block_load (src[3] + i), 3); + return r; +} + +static_always_inline void +aes_block_store_x4 (u8 * dst[], int i, __m512i r) +{ + aes_block_store (dst[0] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 0)); + aes_block_store (dst[1] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 1)); + aes_block_store (dst[2] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 2)); + aes_block_store (dst[3] + i, (u8x16) _mm512_extracti64x2_epi64 (r, 3)); +} +#endif + +static_always_inline void __clib_unused +aes_cbc_dec (u8x16 * k, u8 * src, u8 * dst, u8 * iv, int count, + aes_key_size_t rounds) +{ + u8x16 r0, r1, r2, r3, c0, c1, c2, c3, f; + int i; + + f = aes_block_load (iv); + + while (count >= 64) + { + _mm_prefetch (src + 128, _MM_HINT_T0); + _mm_prefetch (dst + 128, _MM_HINT_T0); + + c0 = aes_block_load (src); + c1 = aes_block_load (src + 16); + c2 = aes_block_load (src + 32); + c3 = aes_block_load (src + 48); + + r0 = c0 ^ k[0]; + r1 = c1 ^ k[0]; + r2 = c2 ^ k[0]; + r3 = c3 ^ k[0]; + + for (i = 1; i < rounds; i++) + { + r0 = aes_dec_round (r0, k[i]); + r1 = aes_dec_round (r1, k[i]); + r2 = aes_dec_round (r2, k[i]); + r3 = aes_dec_round (r3, k[i]); + } + + r0 = aes_dec_last_round (r0, k[i]); + r1 = aes_dec_last_round (r1, k[i]); + r2 = aes_dec_last_round (r2, k[i]); + r3 = aes_dec_last_round (r3, k[i]); + + aes_block_store (dst, r0 ^ f); + aes_block_store (dst + 16, r1 ^ c0); + aes_block_store (dst + 32, r2 ^ c1); + aes_block_store (dst + 48, r3 ^ c2); + + f = c3; + + count -= 64; + src += 64; + dst += 64; + } + + while (count > 0) + { + c0 = aes_block_load (src); + r0 = c0 ^ k[0]; + for (i = 1; i < rounds; i++) + r0 = aes_dec_round (r0, k[i]); + r0 = aes_dec_last_round (r0, k[i]); + aes_block_store (dst, r0 ^ f); + f = c0; + count -= 16; + src += 16; + dst += 16; + } +} + +#ifdef __VAES__ +static_always_inline void +vaes_cbc_dec (__m512i * k, u8 * src, u8 * dst, u8 * iv, int count, + aes_key_size_t rounds) +{ + __m512i permute = { 6, 7, 8, 9, 10, 11, 12, 13 }; + __m512i r0, r1, r2, r3, c0, c1, c2, c3, f = { }; + __mmask8 m; + int i, n_blocks = count >> 4; + + f = _mm512_mask_loadu_epi64 (f, 0xc0, (__m512i *) (iv - 48)); + + while (n_blocks >= 16) + { + c0 = _mm512_loadu_si512 ((__m512i *) src); + c1 = _mm512_loadu_si512 ((__m512i *) (src + 64)); + c2 = _mm512_loadu_si512 ((__m512i *) (src + 128)); + c3 = _mm512_loadu_si512 ((__m512i *) (src + 192)); + + r0 = c0 ^ k[0]; + r1 = c1 ^ k[0]; + r2 = c2 ^ k[0]; + r3 = c3 ^ k[0]; + + for (i = 1; i < rounds; i++) + { + r0 = _mm512_aesdec_epi128 (r0, k[i]); + r1 = _mm512_aesdec_epi128 (r1, k[i]); + r2 = _mm512_aesdec_epi128 (r2, k[i]); + r3 = _mm512_aesdec_epi128 (r3, k[i]); + } + + r0 = _mm512_aesdeclast_epi128 (r0, k[i]); + r1 = _mm512_aesdeclast_epi128 (r1, k[i]); + r2 = _mm512_aesdeclast_epi128 (r2, k[i]); + r3 = _mm512_aesdeclast_epi128 (r3, k[i]); + + r0 ^= _mm512_permutex2var_epi64 (f, permute, c0); + _mm512_storeu_si512 ((__m512i *) dst, r0); + + r1 ^= _mm512_permutex2var_epi64 (c0, permute, c1); + _mm512_storeu_si512 ((__m512i *) (dst + 64), r1); + + r2 ^= _mm512_permutex2var_epi64 (c1, permute, c2); + _mm512_storeu_si512 ((__m512i *) (dst + 128), r2); + + r3 ^= _mm512_permutex2var_epi64 (c2, permute, c3); + _mm512_storeu_si512 ((__m512i *) (dst + 192), r3); + f = c3; + + n_blocks -= 16; + src += 256; + dst += 256; + } + + while (n_blocks > 0) + { + m = (1 << (n_blocks * 2)) - 1; + c0 = _mm512_mask_loadu_epi64 (c0, m, (__m512i *) src); + f = _mm512_permutex2var_epi64 (f, permute, c0); + r0 = c0 ^ k[0]; + for (i = 1; i < rounds; i++) + r0 = _mm512_aesdec_epi128 (r0, k[i]); + r0 = _mm512_aesdeclast_epi128 (r0, k[i]); + _mm512_mask_storeu_epi64 ((__m512i *) dst, m, r0 ^ f); + f = c0; + n_blocks -= 4; + src += 64; + dst += 64; + } +} +#endif + +#ifdef __VAES__ +#define N 16 +#define u32xN u32x16 +#define u32xN_min_scalar u32x16_min_scalar +#define u32xN_is_all_zero u32x16_is_all_zero +#else +#define N 4 +#define u32xN u32x4 +#define u32xN_min_scalar u32x4_min_scalar +#define u32xN_is_all_zero u32x4_is_all_zero +#endif + +static_always_inline u32 +aesni_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], + u32 n_ops, aes_key_size_t ks) +{ + crypto_native_main_t *cm = &crypto_native_main; + crypto_native_per_thread_data_t *ptd = + vec_elt_at_index (cm->per_thread_data, vm->thread_index); + int rounds = AES_KEY_ROUNDS (ks); + u8 dummy[8192]; + u32 i, j, count, n_left = n_ops; + u32xN dummy_mask = { }; + u32xN len = { }; + vnet_crypto_key_index_t key_index[N]; + u8 *src[N] = { }; + u8 *dst[N] = { }; + /* *INDENT-OFF* */ + union + { + u8x16 x1[N]; + __m512i x4[N / 4]; + } r = { }, k[15] = { }; + /* *INDENT-ON* */ + + for (i = 0; i < N; i++) + key_index[i] = ~0; + +more: + for (i = 0; i < N; i++) + if (len[i] == 0) + { + if (n_left == 0) + { + /* no more work to enqueue, so we are enqueueing dummy buffer */ + src[i] = dst[i] = dummy; + len[i] = sizeof (dummy); + dummy_mask[i] = 0; + } + else + { + if (ops[0]->flags & VNET_CRYPTO_OP_FLAG_INIT_IV) + { + r.x1[i] = ptd->cbc_iv[i]; + aes_block_store (ops[0]->iv, r.x1[i]); + ptd->cbc_iv[i] = aes_enc_round (r.x1[i], r.x1[i]); + } + else + r.x1[i] = aes_block_load (ops[0]->iv); + + src[i] = ops[0]->src; + dst[i] = ops[0]->dst; + len[i] = ops[0]->len; + dummy_mask[i] = ~0; + if (key_index[i] != ops[0]->key_index) + { + aes_cbc_key_data_t *kd; + key_index[i] = ops[0]->key_index; + kd = (aes_cbc_key_data_t *) cm->key_data[key_index[i]]; + for (j = 0; j < rounds + 1; j++) + k[j].x1[i] = kd->encrypt_key[j]; + } + ops[0]->status = VNET_CRYPTO_OP_STATUS_COMPLETED; + n_left--; + ops++; + } + } + + count = u32xN_min_scalar (len); + + ASSERT (count % 16 == 0); + + for (i = 0; i < count; i += 16) + { +#ifdef __VAES__ + r.x4[0] = xor3_x4 (r.x4[0], aes_block_load_x4 (src, i), k[0].x4[0]); + r.x4[1] = xor3_x4 (r.x4[1], aes_block_load_x4 (src, i), k[0].x4[1]); + r.x4[2] = xor3_x4 (r.x4[2], aes_block_load_x4 (src, i), k[0].x4[2]); + r.x4[3] = xor3_x4 (r.x4[3], aes_block_load_x4 (src, i), k[0].x4[3]); + + for (j = 1; j < rounds; j++) + { + r.x4[0] = _mm512_aesenc_epi128 (r.x4[0], k[j].x4[0]); + r.x4[1] = _mm512_aesenc_epi128 (r.x4[1], k[j].x4[1]); + r.x4[2] = _mm512_aesenc_epi128 (r.x4[2], k[j].x4[2]); + r.x4[3] = _mm512_aesenc_epi128 (r.x4[3], k[j].x4[3]); + } + r.x4[0] = _mm512_aesenclast_epi128 (r.x4[0], k[j].x4[0]); + r.x4[1] = _mm512_aesenclast_epi128 (r.x4[1], k[j].x4[1]); + r.x4[2] = _mm512_aesenclast_epi128 (r.x4[2], k[j].x4[2]); + r.x4[3] = _mm512_aesenclast_epi128 (r.x4[3], k[j].x4[3]); + + aes_block_store_x4 (dst, i, r.x4[0]); + aes_block_store_x4 (dst + 4, i, r.x4[1]); + aes_block_store_x4 (dst + 8, i, r.x4[2]); + aes_block_store_x4 (dst + 12, i, r.x4[3]); +#else + r.x1[0] = xor3 (r.x1[0], aes_block_load (src[0] + i), k[0].x1[0]); + r.x1[1] = xor3 (r.x1[1], aes_block_load (src[1] + i), k[0].x1[1]); + r.x1[2] = xor3 (r.x1[2], aes_block_load (src[2] + i), k[0].x1[2]); + r.x1[3] = xor3 (r.x1[3], aes_block_load (src[3] + i), k[0].x1[3]); + + for (j = 1; j < rounds; j++) + { + r.x1[0] = aes_enc_round (r.x1[0], k[j].x1[0]); + r.x1[1] = aes_enc_round (r.x1[1], k[j].x1[1]); + r.x1[2] = aes_enc_round (r.x1[2], k[j].x1[2]); + r.x1[3] = aes_enc_round (r.x1[3], k[j].x1[3]); + } + + r.x1[0] = aes_enc_last_round (r.x1[0], k[j].x1[0]); + r.x1[1] = aes_enc_last_round (r.x1[1], k[j].x1[1]); + r.x1[2] = aes_enc_last_round (r.x1[2], k[j].x1[2]); + r.x1[3] = aes_enc_last_round (r.x1[3], k[j].x1[3]); + + aes_block_store (dst[0] + i, r.x1[0]); + aes_block_store (dst[1] + i, r.x1[1]); + aes_block_store (dst[2] + i, r.x1[2]); + aes_block_store (dst[3] + i, r.x1[3]); +#endif + } + + for (i = 0; i < N; i++) + { + src[i] += count; + dst[i] += count; + len[i] -= count; + } + + if (n_left > 0) + goto more; + + if (!u32xN_is_all_zero (len & dummy_mask)) + goto more; + + return n_ops; +} + +static_always_inline u32 +aesni_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], + u32 n_ops, aes_key_size_t ks) +{ + crypto_native_main_t *cm = &crypto_native_main; + int rounds = AES_KEY_ROUNDS (ks); + vnet_crypto_op_t *op = ops[0]; + aes_cbc_key_data_t *kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; + u32 n_left = n_ops; + + ASSERT (n_ops >= 1); + +decrypt: +#ifdef __VAES__ + vaes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds); +#else + aes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds); +#endif + op->status = VNET_CRYPTO_OP_STATUS_COMPLETED; + + if (--n_left) + { + op += 1; + kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; + goto decrypt; + } + + return n_ops; +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/crypto_native/aes_cbc_neon.h b/src/plugins/crypto_native/aes_cbc_neon.h new file mode 100644 index 00000000000..4a9c3cd3986 --- /dev/null +++ b/src/plugins/crypto_native/aes_cbc_neon.h @@ -0,0 +1,208 @@ +/* + *------------------------------------------------------------------ + * Copyright (c) 2020 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#ifdef __aarch64__ + +static_always_inline void +aes_cbc_dec (u8x16 * k, u8 * src, u8 * dst, u8 * iv, int count, int rounds) +{ + u8x16 r0, r1, r2, r3, c0, c1, c2, c3, f; + + f = vld1q_u8 (iv); + + while (count >= 64) + { + c0 = r0 = vld1q_u8 (src); + c1 = r1 = vld1q_u8 (src + 16); + c2 = r2 = vld1q_u8 (src + 32); + c3 = r3 = vld1q_u8 (src + 48); + for (int i = 0; i < rounds - 1; i++) + { + r0 = vaesimcq_u8 (vaesdq_u8 (r0, k[i])); + r1 = vaesimcq_u8 (vaesdq_u8 (r1, k[i])); + r2 = vaesimcq_u8 (vaesdq_u8 (r2, k[i])); + r3 = vaesimcq_u8 (vaesdq_u8 (r3, k[i])); + } + r0 = vaesdq_u8 (r0, k[rounds - 1]) ^ k[rounds]; + r1 = vaesdq_u8 (r1, k[rounds - 1]) ^ k[rounds]; + r2 = vaesdq_u8 (r2, k[rounds - 1]) ^ k[rounds]; + r3 = vaesdq_u8 (r3, k[rounds - 1]) ^ k[rounds]; + vst1q_u8 (dst, r0 ^ f); + vst1q_u8 (dst + 16, r1 ^ c0); + vst1q_u8 (dst + 32, r2 ^ c1); + vst1q_u8 (dst + 48, r3 ^ c2); + f = c3; + + src += 64; + dst += 64; + count -= 64; + } + + while (count >= 16) + { + c0 = r0 = vld1q_u8 (src); + for (int i = 0; i < rounds - 1; i++) + r0 = vaesimcq_u8 (vaesdq_u8 (r0, k[i])); + r0 = vaesdq_u8 (r0, k[rounds - 1]) ^ k[rounds]; + vst1q_u8 (dst, r0 ^ f); + f = c0; + + src += 16; + dst += 16; + count -= 16; + } +} + +static_always_inline u32 +aesni_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], + u32 n_ops, aes_key_size_t ks) +{ + crypto_native_main_t *cm = &crypto_native_main; + crypto_native_per_thread_data_t *ptd = + vec_elt_at_index (cm->per_thread_data, vm->thread_index); + int rounds = AES_KEY_ROUNDS (ks); + u8 dummy[8192]; + u32 i, j, count, n_left = n_ops; + u32x4 dummy_mask = { }; + u32x4 len = { }; + vnet_crypto_key_index_t key_index[4]; + u8 *src[4] = { }; + u8 *dst[4] = { }; + u8x16 r[4] = { }; + u8x16 k[15][4] = { }; + + for (i = 0; i < 4; i++) + key_index[i] = ~0; + +more: + for (i = 0; i < 4; i++) + if (len[i] == 0) + { + if (n_left == 0) + { + /* no more work to enqueue, so we are enqueueing dummy buffer */ + src[i] = dst[i] = dummy; + len[i] = sizeof (dummy); + dummy_mask[i] = 0; + } + else + { + if (ops[0]->flags & VNET_CRYPTO_OP_FLAG_INIT_IV) + { + r[i] = ptd->cbc_iv[i]; + vst1q_u8 (ops[0]->iv, r[i]); + ptd->cbc_iv[i] = vaeseq_u8 (r[i], r[i]); + } + else + r[i] = vld1q_u8 (ops[0]->iv); + + src[i] = ops[0]->src; + dst[i] = ops[0]->dst; + len[i] = ops[0]->len; + dummy_mask[i] = ~0; + if (key_index[i] != ops[0]->key_index) + { + aes_cbc_key_data_t *kd; + key_index[i] = ops[0]->key_index; + kd = (aes_cbc_key_data_t *) cm->key_data[key_index[i]]; + for (j = 0; j < rounds + 1; j++) + k[j][i] = kd->encrypt_key[j]; + } + ops[0]->status = VNET_CRYPTO_OP_STATUS_COMPLETED; + n_left--; + ops++; + } + } + + count = u32x4_min_scalar (len); + + ASSERT (count % 16 == 0); + + for (i = 0; i < count; i += 16) + { + r[0] ^= vld1q_u8 (src[0] + i); + r[1] ^= vld1q_u8 (src[1] + i); + r[2] ^= vld1q_u8 (src[2] + i); + r[3] ^= vld1q_u8 (src[3] + i); + for (j = 0; j < rounds - 1; j++) + { + r[0] = vaesmcq_u8 (vaeseq_u8 (r[0], k[j][0])); + r[1] = vaesmcq_u8 (vaeseq_u8 (r[1], k[j][1])); + r[2] = vaesmcq_u8 (vaeseq_u8 (r[2], k[j][2])); + r[3] = vaesmcq_u8 (vaeseq_u8 (r[3], k[j][3])); + } + r[0] = vaeseq_u8 (r[0], k[j][0]) ^ k[rounds][0]; + r[1] = vaeseq_u8 (r[1], k[j][1]) ^ k[rounds][1]; + r[2] = vaeseq_u8 (r[2], k[j][2]) ^ k[rounds][2]; + r[3] = vaeseq_u8 (r[3], k[j][3]) ^ k[rounds][3]; + vst1q_u8 (dst[0] + i, r[0]); + vst1q_u8 (dst[1] + i, r[1]); + vst1q_u8 (dst[2] + i, r[2]); + vst1q_u8 (dst[3] + i, r[3]); + } + + for (i = 0; i < 4; i++) + { + src[i] += count; + dst[i] += count; + len[i] -= count; + } + + if (n_left > 0) + goto more; + + if (!u32x4_is_all_zero (len & dummy_mask)) + goto more; + + return n_ops; +} + +static_always_inline u32 +aesni_ops_dec_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], + u32 n_ops, aes_key_size_t ks) +{ + crypto_native_main_t *cm = &crypto_native_main; + int rounds = AES_KEY_ROUNDS (ks); + vnet_crypto_op_t *op = ops[0]; + aes_cbc_key_data_t *kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; + u32 n_left = n_ops; + + ASSERT (n_ops >= 1); + +decrypt: + aes_cbc_dec (kd->decrypt_key, op->src, op->dst, op->iv, op->len, rounds); + op->status = VNET_CRYPTO_OP_STATUS_COMPLETED; + + if (--n_left) + { + op += 1; + kd = (aes_cbc_key_data_t *) cm->key_data[op->key_index]; + goto decrypt; + } + + return n_ops; +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/crypto_native/crypto_native.h b/src/plugins/crypto_native/crypto_native.h index d496cc6f63d..0b6116a7d38 100644 --- a/src/plugins/crypto_native/crypto_native.h +++ b/src/plugins/crypto_native/crypto_native.h @@ -39,6 +39,7 @@ clib_error_t *crypto_native_aes_cbc_init_sse42 (vlib_main_t * vm); clib_error_t *crypto_native_aes_cbc_init_avx2 (vlib_main_t * vm); clib_error_t *crypto_native_aes_cbc_init_avx512 (vlib_main_t * vm); clib_error_t *crypto_native_aes_cbc_init_vaes (vlib_main_t * vm); +clib_error_t *crypto_native_aes_cbc_init_neon (vlib_main_t * vm); clib_error_t *crypto_native_aes_gcm_init_sse42 (vlib_main_t * vm); clib_error_t *crypto_native_aes_gcm_init_avx2 (vlib_main_t * vm); diff --git a/src/plugins/crypto_native/main.c b/src/plugins/crypto_native/main.c index 2c03ee20309..d338ab6d910 100644 --- a/src/plugins/crypto_native/main.c +++ b/src/plugins/crypto_native/main.c @@ -62,7 +62,8 @@ crypto_native_init (vlib_main_t * vm) vlib_thread_main_t *tm = vlib_get_thread_main (); clib_error_t *error = 0; - if (clib_cpu_supports_x86_aes () == 0) + if (clib_cpu_supports_x86_aes () == 0 && + clib_cpu_supports_aarch64_aes () == 0) return 0; vec_validate_aligned (cm->per_thread_data, tm->n_vlib_mains - 1, @@ -72,6 +73,7 @@ crypto_native_init (vlib_main_t * vm) vnet_crypto_register_engine (vm, "native", 100, "Native ISA Optimized Crypto"); +#if __x86_64__ if (clib_cpu_supports_vaes ()) error = crypto_native_aes_cbc_init_vaes (vm); else if (clib_cpu_supports_avx512f ()) @@ -98,6 +100,13 @@ crypto_native_init (vlib_main_t * vm) if (error) goto error; } +#endif +#if __aarch64__ + error = crypto_native_aes_cbc_init_neon (vm); + + if (error) + goto error; +#endif vnet_crypto_register_key_handler (vm, cm->crypto_engine_index, crypto_native_key_handler); diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h index e0d0f065c0e..5a7bbe36a4d 100644 --- a/src/vppinfra/vector_neon.h +++ b/src/vppinfra/vector_neon.h @@ -176,6 +176,12 @@ u32x4_scatter (u32x4 r, void *p0, void *p1, void *p2, void *p3) *(u32 *) p3 = vgetq_lane_u32 (r, 3); } +static_always_inline u32 +u32x4_min_scalar (u32x4 v) +{ + return vminvq_u32 (v); +} + #define CLIB_HAVE_VEC128_MSB_MASK #define CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE |