ena: Amazon Elastic Network Adapter (ENA) native driver

[vpp.git] / src / vppinfra / vector_avx2.h

diff --git a/src/vppinfra/vector_avx2.h b/src/vppinfra/vector_avx2.h
index 584bd20..b832681 100644 (file)
--- a/src/vppinfra/vector_avx2.h
+++ b/src/vppinfra/vector_avx2.h
@@ -105,17 +105,19 @@ _(u64x2, u64x4)
 #undef _
 /* *INDENT-ON* */
 
-always_inline u8x32
-u16x16_pack (u16x16 lo, u16x16 hi)
-{
-  return (u8x32) _mm256_packus_epi16 ((__m256i) lo, (__m256i) hi);
-}
+/* 256 bit packs. */
+#define _(f, t, fn)                                                           \
+  always_inline t t##_pack (f lo, f hi)                                       \
+  {                                                                           \
+    return (t) fn ((__m256i) lo, (__m256i) hi);                               \
+  }
+
+_ (i16x16, i8x32, _mm256_packs_epi16)
+_ (i16x16, u8x32, _mm256_packus_epi16)
+_ (i32x8, i16x16, _mm256_packs_epi32)
+_ (i32x8, u16x16, _mm256_packus_epi32)
 
-always_inline i8x32
-i16x16_pack (i16x16 lo, i16x16 hi)
-{
-  return (i8x32) _mm256_packs_epi16 ((__m256i) lo, (__m256i) hi);
-}
+#undef _
 
 static_always_inline u32
 u8x32_msb_mask (u8x32 v)
@@ -181,15 +183,12 @@ u16x16_byte_swap (u16x16 v)
   return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
 }
 
-static_always_inline u8x32
-u8x32_shuffle (u8x32 v, u8x32 m)
-{
-  return (u8x32) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) m);
-}
-
 #define u8x32_align_right(a, b, imm) \
   (u8x32) _mm256_alignr_epi8 ((__m256i) a, (__m256i) b, imm)
 
+#define u64x4_align_right(a, b, imm)                                          \
+  (u64x4) _mm256_alignr_epi64 ((__m256i) a, (__m256i) b, imm)
+
 static_always_inline u32
 u32x8_sum_elts (u32x8 sum8)
 {
@@ -204,6 +203,36 @@ u32x8_hadd (u32x8 v1, u32x8 v2)
   return (u32x8) _mm256_hadd_epi32 ((__m256i) v1, (__m256i) v2);
 }
 
+static_always_inline u32
+u32x8_hxor (u32x8 v)
+{
+  u32x4 v4;
+  v4 = u32x8_extract_lo (v) ^ u32x8_extract_hi (v);
+  v4 ^= (u32x4) u8x16_align_right (v4, v4, 8);
+  v4 ^= (u32x4) u8x16_align_right (v4, v4, 4);
+  return v4[0];
+}
+
+static_always_inline u8x32
+u8x32_xor3 (u8x32 a, u8x32 b, u8x32 c)
+{
+#if __AVX512F__
+  return (u8x32) _mm256_ternarylogic_epi32 ((__m256i) a, (__m256i) b,
+                                           (__m256i) c, 0x96);
+#endif
+  return a ^ b ^ c;
+}
+
+static_always_inline u8x32
+u8x32_reflect_u8x16 (u8x32 x)
+{
+  static const u8x32 mask = {
+    15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,
+    15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,
+  };
+  return (u8x32) _mm256_shuffle_epi8 ((__m256i) x, (__m256i) mask);
+}
+
 static_always_inline u16x16
 u16x16_mask_last (u16x16 v, u8 n_last)
 {
@@ -306,11 +335,17 @@ u32x8_scatter_one (u32x8 r, int index, void *p)
   *(u32 *) p = r[index];
 }
 
-static_always_inline u8x32
-u8x32_is_greater (u8x32 v1, u8x32 v2)
-{
-  return (u8x32) _mm256_cmpgt_epi8 ((__m256i) v1, (__m256i) v2);
-}
+#define u32x8_gather_u32(base, indices, scale)                                \
+  (u32x8) _mm256_i32gather_epi32 ((const int *) base, (__m256i) indices, scale)
+
+#ifdef __AVX512F__
+#define u32x8_scatter_u32(base, indices, v, scale)                            \
+  _mm256_i32scatter_epi32 (base, (__m256i) indices, (__m256i) v, scale)
+#else
+#define u32x8_scatter_u32(base, indices, v, scale)                            \
+  for (u32 i = 0; i < 8; i++)                                                 \
+    *((u32u *) ((u8 *) base + (scale) * (indices)[i])) = (v)[i];
+#endif
 
 static_always_inline u8x32
 u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
@@ -319,6 +354,11 @@ u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
                                     (__m256i) mask);
 }
 
+#define u8x32_word_shift_left(a, n)                                           \
+  (u8x32) _mm256_bslli_epi128 ((__m256i) a, n)
+#define u8x32_word_shift_right(a, n)                                          \
+  (u8x32) _mm256_bsrli_epi128 ((__m256i) a, n)
+
 #define u32x8_permute_lanes(a, b, m) \
   (u32x8) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
 #define u64x4_permute_lanes(a, b, m) \
@@ -388,6 +428,58 @@ u64x4_transpose (u64x4 a[8])
   a[3] = u64x4_permute_lanes (r[1], r[3], 0x31);
 }
 
+static_always_inline u8x32
+u8x32_splat_u8x16 (u8x16 a)
+{
+  return (u8x32) _mm256_broadcastsi128_si256 ((__m128i) a);
+}
+
+static_always_inline u32x8
+u32x8_splat_u32x4 (u32x4 a)
+{
+  return (u32x8) _mm256_broadcastsi128_si256 ((__m128i) a);
+}
+
+static_always_inline u64x4
+u64x4_splat_u64x2 (u64x2 a)
+{
+  return (u64x4) _mm256_broadcastsi128_si256 ((__m128i) a);
+}
+
+static_always_inline u8x32
+u8x32_load_partial (u8 *data, uword n)
+{
+#if defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+  return u8x32_mask_load_zero (data, pow2_mask (n));
+#else
+  u8x32 r = {};
+  if (n > 16)
+    {
+      r = u8x32_insert_lo (r, *(u8x16u *) data);
+      r = u8x32_insert_hi (r, u8x16_load_partial (data + 16, n - 16));
+    }
+  else
+    r = u8x32_insert_lo (r, u8x16_load_partial (data, n));
+  return r;
+#endif
+}
+
+static_always_inline void
+u8x32_store_partial (u8x32 r, u8 *data, uword n)
+{
+#if defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+  u8x32_mask_store (r, data, pow2_mask (n));
+#else
+  if (n > 16)
+    {
+      *(u8x16u *) data = u8x32_extract_lo (r);
+      u8x16_store_partial (u8x32_extract_hi (r), data + 16, n - 16);
+    }
+  else
+    u8x16_store_partial (u8x32_extract_lo (r), data, n);
+#endif
+}
+
 #endif /* included_vector_avx2_h */
 
 /*