summaryrefslogtreecommitdiffstats
path: root/src/vppinfra/vector
diff options
context:
space:
mode:
Diffstat (limited to 'src/vppinfra/vector')
-rw-r--r--src/vppinfra/vector/test/test.h6
-rw-r--r--src/vppinfra/vector/test/toeplitz.c243
-rw-r--r--src/vppinfra/vector/toeplitz.h419
3 files changed, 594 insertions, 74 deletions
diff --git a/src/vppinfra/vector/test/test.h b/src/vppinfra/vector/test/test.h
index 4334dfa53a1..4511bf31fa9 100644
--- a/src/vppinfra/vector/test/test.h
+++ b/src/vppinfra/vector/test/test.h
@@ -59,8 +59,10 @@ typedef struct
} test_main_t;
extern test_main_t test_main;
-#define __test_funct_fn static __clib_noinline __clib_section (".test_func")
-#define __test_perf_fn static __clib_noinline __clib_section (".test_perf")
+#define __test_funct_fn \
+ static __clib_noinline __clib_noclone __clib_section (".test_func")
+#define __test_perf_fn \
+ static __clib_noinline __clib_noclone __clib_section (".test_perf")
#define REGISTER_TEST(x) \
test_registration_t CLIB_MARCH_SFX (__test_##x); \
diff --git a/src/vppinfra/vector/test/toeplitz.c b/src/vppinfra/vector/test/toeplitz.c
index 0efc4239a13..d425a443eec 100644
--- a/src/vppinfra/vector/test/toeplitz.c
+++ b/src/vppinfra/vector/test/toeplitz.c
@@ -175,6 +175,13 @@ wrapper (clib_toeplitz_hash_key_t *k, u8 *data, u32 n_bytes)
return clib_toeplitz_hash (k, data, n_bytes);
}
+__test_funct_fn void
+wrapper_x4 (clib_toeplitz_hash_key_t *k, u8 *d0, u8 *d1, u8 *d2, u8 *d3,
+ u32 *h0, u32 *h1, u32 *h2, u32 *h3, u32 n_bytes)
+{
+ clib_toeplitz_hash_x4 (k, d0, d1, d2, d3, h0, h1, h2, h3, n_bytes);
+}
+
static clib_error_t *
test_clib_toeplitz_hash (clib_error_t *err)
{
@@ -222,16 +229,10 @@ test_clib_toeplitz_hash (clib_error_t *err)
n_key_copies = 6;
bigkey_len = k->key_length * n_key_copies;
bigdata_len = bigkey_len - 4;
- bigkey = clib_mem_alloc (bigkey_len);
- bigdata = clib_mem_alloc (bigdata_len);
+ bigkey = test_mem_alloc_and_splat (k->key_length, n_key_copies, k->data);
+ bigdata = test_mem_alloc_and_fill_inc_u8 (bigdata_len, 0, 0);
u32 key_len = k->key_length;
- for (int i = 0; i < n_key_copies; i++)
- clib_memcpy (bigkey + i * key_len, k->data, key_len);
-
- for (int i = 0; i < bigdata_len; i++)
- bigdata[i] = (u8) i;
-
clib_toeplitz_hash_key_free (k);
k = clib_toeplitz_hash_key_init (bigkey, n_key_copies * key_len);
@@ -252,8 +253,8 @@ test_clib_toeplitz_hash (clib_error_t *err)
done:
clib_toeplitz_hash_key_free (k);
- clib_mem_free (bigkey);
- clib_mem_free (bigdata);
+ test_mem_free (bigkey);
+ test_mem_free (bigdata);
return err;
}
@@ -334,3 +335,225 @@ REGISTER_TEST (clib_toeplitz_hash) = {
.n_ops = 16384,
.fn = perftest_variable_size }),
};
+
+static clib_error_t *
+test_clib_toeplitz_hash_x4 (clib_error_t *err)
+{
+ u32 r[4];
+ int n_key_copies, bigkey_len, bigdata_len;
+ u8 *bigkey, *bigdata0, *bigdata1, *bigdata2, *bigdata3;
+ clib_toeplitz_hash_key_t *k;
+
+ k = clib_toeplitz_hash_key_init (0, 0);
+
+ wrapper_x4 (k, (u8 *) &ip4_tests[0].key, (u8 *) &ip4_tests[1].key,
+ (u8 *) &ip4_tests[2].key, (u8 *) &ip4_tests[3].key, r, r + 1,
+ r + 2, r + 3, 8);
+
+ if (ip4_tests[0].hash_2t != r[0] || ip4_tests[1].hash_2t != r[1] ||
+ ip4_tests[2].hash_2t != r[2] || ip4_tests[3].hash_2t != r[3])
+ return clib_error_return (err,
+ "wrong IPv4 2 tuple x4 hash "
+ "calculated { 0x%08x, 0x%08x, 0x%08x, 0x%08x } "
+ "expected { 0x%08x, 0x%08x, 0x%08x, 0x%08x }",
+ ip4_tests[0].hash_2t, ip4_tests[1].hash_2t,
+ ip4_tests[2].hash_2t, ip4_tests[3].hash_2t, r[0],
+ r[1], r[2], r[3]);
+
+ wrapper_x4 (k, (u8 *) &ip4_tests[0].key, (u8 *) &ip4_tests[1].key,
+ (u8 *) &ip4_tests[2].key, (u8 *) &ip4_tests[3].key, r, r + 1,
+ r + 2, r + 3, 12);
+
+ if (ip4_tests[0].hash_4t != r[0] || ip4_tests[1].hash_4t != r[1] ||
+ ip4_tests[2].hash_4t != r[2] || ip4_tests[3].hash_4t != r[3])
+ return clib_error_return (err,
+ "wrong IPv4 4 tuple x4 hash "
+ "calculated { 0x%08x, 0x%08x, 0x%08x, 0x%08x } "
+ "expected { 0x%08x, 0x%08x, 0x%08x, 0x%08x }",
+ ip4_tests[0].hash_4t, ip4_tests[1].hash_4t,
+ ip4_tests[2].hash_4t, ip4_tests[3].hash_4t, r[0],
+ r[1], r[2], r[3]);
+
+ wrapper_x4 (k, (u8 *) &ip6_tests[0].key, (u8 *) &ip6_tests[1].key,
+ (u8 *) &ip6_tests[2].key, (u8 *) &ip6_tests[0].key, r, r + 1,
+ r + 2, r + 3, 32);
+
+ if (ip6_tests[0].hash_2t != r[0] || ip6_tests[1].hash_2t != r[1] ||
+ ip6_tests[2].hash_2t != r[2] || ip6_tests[0].hash_2t != r[3])
+ return clib_error_return (err,
+ "wrong IPv6 2 tuple x4 hash "
+ "calculated { 0x%08x, 0x%08x, 0x%08x, 0x%08x } "
+ "expected { 0x%08x, 0x%08x, 0x%08x, 0x%08x }",
+ ip6_tests[0].hash_2t, ip6_tests[1].hash_2t,
+ ip6_tests[2].hash_2t, ip6_tests[0].hash_2t, r[0],
+ r[1], r[2], r[3]);
+
+ wrapper_x4 (k, (u8 *) &ip6_tests[0].key, (u8 *) &ip6_tests[1].key,
+ (u8 *) &ip6_tests[2].key, (u8 *) &ip6_tests[0].key, r, r + 1,
+ r + 2, r + 3, 36);
+
+ if (ip6_tests[0].hash_4t != r[0] || ip6_tests[1].hash_4t != r[1] ||
+ ip6_tests[2].hash_4t != r[2] || ip6_tests[0].hash_4t != r[3])
+ return clib_error_return (err,
+ "wrong IPv6 4 tuple x4 hash "
+ "calculated { 0x%08x, 0x%08x, 0x%08x, 0x%08x } "
+ "expected { 0x%08x, 0x%08x, 0x%08x, 0x%08x }",
+ ip6_tests[0].hash_4t, ip6_tests[1].hash_4t,
+ ip6_tests[2].hash_4t, ip6_tests[0].hash_4t, r[0],
+ r[1], r[2], r[3]);
+
+ n_key_copies = 6;
+ bigkey_len = k->key_length * n_key_copies;
+ bigdata_len = bigkey_len - 4;
+ bigkey = test_mem_alloc_and_splat (k->key_length, n_key_copies, k->data);
+ bigdata0 = test_mem_alloc_and_fill_inc_u8 (bigdata_len, 0, 0);
+ bigdata1 = test_mem_alloc_and_fill_inc_u8 (bigdata_len, 0, 0);
+ bigdata2 = test_mem_alloc_and_fill_inc_u8 (bigdata_len, 0, 0);
+ bigdata3 = test_mem_alloc_and_fill_inc_u8 (bigdata_len, 0, 0);
+ u32 key_len = k->key_length;
+
+ clib_toeplitz_hash_key_free (k);
+ k = clib_toeplitz_hash_key_init (bigkey, n_key_copies * key_len);
+
+ for (int i = 0; i < N_LENGTH_TESTS - 4; i++)
+ {
+ wrapper_x4 (k, bigdata0, bigdata1, bigdata2, bigdata3, r, r + 1, r + 2,
+ r + 3, i);
+ if (length_test_hashes[i] != r[0] || length_test_hashes[i] != r[1] ||
+ length_test_hashes[i] != r[2] || length_test_hashes[i] != r[3])
+ {
+ err = clib_error_return (
+ err,
+ "wrong length test hash x4 for length %u, "
+ "calculated { 0x%08x, 0x%08x, 0x%08x, 0x%08x }, expected 0x%08x",
+ i, r[0], r[1], r[2], r[3], length_test_hashes[i]);
+ goto done;
+ }
+ }
+
+done:
+ clib_toeplitz_hash_key_free (k);
+ test_mem_free (bigkey);
+ test_mem_free (bigdata0);
+ test_mem_free (bigdata1);
+ test_mem_free (bigdata2);
+ test_mem_free (bigdata3);
+ return err;
+}
+
+void __test_perf_fn
+perftest_fixed_12byte_x4 (int fd, test_perf_t *tp)
+{
+ u32 n = tp->n_ops / 4;
+ u8 *d0 = test_mem_alloc_and_splat (12, n, (void *) &ip4_tests[0].key);
+ u8 *d1 = test_mem_alloc_and_splat (12, n, (void *) &ip4_tests[1].key);
+ u8 *d2 = test_mem_alloc_and_splat (12, n, (void *) &ip4_tests[2].key);
+ u8 *d3 = test_mem_alloc_and_splat (12, n, (void *) &ip4_tests[3].key);
+ u32 *h0 = test_mem_alloc (4 * n);
+ u32 *h1 = test_mem_alloc (4 * n);
+ u32 *h2 = test_mem_alloc (4 * n);
+ u32 *h3 = test_mem_alloc (4 * n);
+ clib_toeplitz_hash_key_t *k = clib_toeplitz_hash_key_init (0, 0);
+
+ test_perf_event_enable (fd);
+ for (int i = 0; i < n; i++)
+ clib_toeplitz_hash_x4 (k, d0 + i * 12, d1 + i * 12, d2 + i * 12,
+ d3 + i * 12, h0 + i, h1 + i, h2 + i, h3 + i, 12);
+ test_perf_event_disable (fd);
+
+ clib_toeplitz_hash_key_free (k);
+ test_mem_free (d0);
+ test_mem_free (d1);
+ test_mem_free (d2);
+ test_mem_free (d3);
+ test_mem_free (h0);
+ test_mem_free (h1);
+ test_mem_free (h2);
+ test_mem_free (h3);
+}
+
+void __test_perf_fn
+perftest_fixed_36byte_x4 (int fd, test_perf_t *tp)
+{
+ u32 n = tp->n_ops / 4;
+ u8 *d0 = test_mem_alloc_and_splat (36, n, (void *) &ip4_tests[0].key);
+ u8 *d1 = test_mem_alloc_and_splat (36, n, (void *) &ip4_tests[1].key);
+ u8 *d2 = test_mem_alloc_and_splat (36, n, (void *) &ip4_tests[2].key);
+ u8 *d3 = test_mem_alloc_and_splat (36, n, (void *) &ip4_tests[3].key);
+ u32 *h0 = test_mem_alloc (4 * n);
+ u32 *h1 = test_mem_alloc (4 * n);
+ u32 *h2 = test_mem_alloc (4 * n);
+ u32 *h3 = test_mem_alloc (4 * n);
+ clib_toeplitz_hash_key_t *k = clib_toeplitz_hash_key_init (0, 0);
+
+ test_perf_event_enable (fd);
+ for (int i = 0; i < n; i++)
+ clib_toeplitz_hash_x4 (k, d0 + i * 36, d1 + i * 36, d2 + i * 36,
+ d3 + i * 36, h0 + i, h1 + i, h2 + i, h3 + i, 36);
+ test_perf_event_disable (fd);
+
+ clib_toeplitz_hash_key_free (k);
+ test_mem_free (d0);
+ test_mem_free (d1);
+ test_mem_free (d2);
+ test_mem_free (d3);
+ test_mem_free (h0);
+ test_mem_free (h1);
+ test_mem_free (h2);
+ test_mem_free (h3);
+}
+
+void __test_perf_fn
+perftest_variable_size_x4 (int fd, test_perf_t *tp)
+{
+ u32 key_len, n_keys, n = tp->n_ops / 4;
+ u8 *key;
+ u8 *d0 = test_mem_alloc (n);
+ u8 *d1 = test_mem_alloc (n);
+ u8 *d2 = test_mem_alloc (n);
+ u8 *d3 = test_mem_alloc (n);
+ u32 *h0 = test_mem_alloc (sizeof (u32));
+ u32 *h1 = test_mem_alloc (sizeof (u32));
+ u32 *h2 = test_mem_alloc (sizeof (u32));
+ u32 *h3 = test_mem_alloc (sizeof (u32));
+ clib_toeplitz_hash_key_t *k = clib_toeplitz_hash_key_init (0, 0);
+
+ k = clib_toeplitz_hash_key_init (0, 0);
+ key_len = k->key_length;
+ n_keys = ((n + 4) / k->key_length) + 1;
+ key = test_mem_alloc_and_splat (n_keys, key_len, k->data);
+ clib_toeplitz_hash_key_free (k);
+ k = clib_toeplitz_hash_key_init (key, key_len * n_keys);
+
+ test_perf_event_enable (fd);
+ clib_toeplitz_hash_x4 (k, d0, d1, d2, d3, h0, h1, h2, h3, n);
+ test_perf_event_disable (fd);
+
+ clib_toeplitz_hash_key_free (k);
+ test_mem_free (key);
+ test_mem_free (d0);
+ test_mem_free (d1);
+ test_mem_free (d2);
+ test_mem_free (d3);
+ test_mem_free (h0);
+ test_mem_free (h1);
+ test_mem_free (h2);
+ test_mem_free (h3);
+}
+
+REGISTER_TEST (clib_toeplitz_hash_x4) = {
+ .name = "clib_toeplitz_hash_x4",
+ .fn = test_clib_toeplitz_hash_x4,
+ .perf_tests = PERF_TESTS ({ .name = "fixed_12",
+ .op_name = "12B Tuple",
+ .n_ops = 1024,
+ .fn = perftest_fixed_12byte_x4 },
+ { .name = "fixed_36",
+ .op_name = "36B Tuple",
+ .n_ops = 1024,
+ .fn = perftest_fixed_36byte_x4 },
+ { .name = "variable_size",
+ .op_name = "Byte",
+ .n_ops = 16384,
+ .fn = perftest_variable_size_x4 }),
+};
diff --git a/src/vppinfra/vector/toeplitz.h b/src/vppinfra/vector/toeplitz.h
index a199a4d68a6..76297f05195 100644
--- a/src/vppinfra/vector/toeplitz.h
+++ b/src/vppinfra/vector/toeplitz.h
@@ -16,13 +16,6 @@ typedef struct
clib_toeplitz_hash_key_t *clib_toeplitz_hash_key_init (u8 *key, u32 keylen);
void clib_toeplitz_hash_key_free (clib_toeplitz_hash_key_t *k);
-#if defined(__GFNI__) && defined(__AVX512F__)
-
-#define u64x8_gf2p8_affine(d, m, imm) \
- (u64x8) _mm512_gf2p8affine_epi64_epi8 ((__m512i) (d), (__m512i) (m), imm)
-
-#endif
-
#ifdef CLIB_HAVE_VEC256
static_always_inline u32x8
toeplitz_hash_one_x8 (u32x8 hash, u64x4 v4, u8 data, u8 off)
@@ -40,6 +33,58 @@ toeplitz_hash_one_x8 (u32x8 hash, u64x4 v4, u8 data, u8 off)
}
#endif
+#if defined(__GFNI__) && defined(__AVX512F__)
+static const u8x64 __clib_toeplitz_hash_gfni_permute = {
+ /* clang-format off */
+ 0x00, 0x01, 0x02, 0x03, 0x40, 0x41, 0x42, 0x43,
+ 0x01, 0x02, 0x03, 0x04, 0x41, 0x42, 0x43, 0x44,
+ 0x02, 0x03, 0x04, 0x05, 0x42, 0x43, 0x44, 0x45,
+ 0x03, 0x04, 0x05, 0x06, 0x43, 0x44, 0x45, 0x46,
+ 0x04, 0x05, 0x06, 0x07, 0x44, 0x45, 0x46, 0x47,
+ 0x05, 0x06, 0x07, 0x08, 0x45, 0x46, 0x47, 0x48,
+ 0x06, 0x07, 0x08, 0x09, 0x46, 0x47, 0x48, 0x49,
+ 0x07, 0x08, 0x09, 0x0a, 0x47, 0x48, 0x49, 0x4a
+ /* clang-format on */
+};
+static_always_inline u64x8
+clib_toeplitz_hash_gfni_one (u8x64 d0, u64x8 m, int i)
+{
+
+ d0 = i == 1 ? (u8x64) u64x8_align_right (d0, d0, 1) : d0;
+ d0 = i == 2 ? (u8x64) u64x8_align_right (d0, d0, 2) : d0;
+ d0 = i == 3 ? (u8x64) u64x8_align_right (d0, d0, 3) : d0;
+ d0 = i == 4 ? (u8x64) u64x8_align_right (d0, d0, 4) : d0;
+ d0 = i == 5 ? (u8x64) u64x8_align_right (d0, d0, 5) : d0;
+ d0 = i == 6 ? (u8x64) u64x8_align_right (d0, d0, 6) : d0;
+
+ d0 = u8x64_permute (__clib_toeplitz_hash_gfni_permute, d0);
+
+ return (u64x8) _mm512_gf2p8affine_epi64_epi8 ((__m512i) d0, (__m512i) m, 0);
+}
+
+static_always_inline u64x8
+clib_toeplitz_hash_gfni_two (u8x64 d0, u8x64 d1, u64x8 m, int i)
+{
+
+ d0 = i == 1 ? (u8x64) u64x8_align_right (d0, d0, 1) : d0;
+ d1 = i == 1 ? (u8x64) u64x8_align_right (d1, d1, 1) : d1;
+ d0 = i == 2 ? (u8x64) u64x8_align_right (d0, d0, 2) : d0;
+ d1 = i == 2 ? (u8x64) u64x8_align_right (d1, d1, 2) : d1;
+ d0 = i == 3 ? (u8x64) u64x8_align_right (d0, d0, 3) : d0;
+ d1 = i == 3 ? (u8x64) u64x8_align_right (d1, d1, 3) : d1;
+ d0 = i == 4 ? (u8x64) u64x8_align_right (d0, d0, 4) : d0;
+ d1 = i == 4 ? (u8x64) u64x8_align_right (d1, d1, 4) : d1;
+ d0 = i == 5 ? (u8x64) u64x8_align_right (d0, d0, 5) : d0;
+ d1 = i == 5 ? (u8x64) u64x8_align_right (d1, d1, 5) : d1;
+ d0 = i == 6 ? (u8x64) u64x8_align_right (d0, d0, 6) : d0;
+ d1 = i == 6 ? (u8x64) u64x8_align_right (d1, d1, 6) : d1;
+
+ d0 = u8x64_permute2 (__clib_toeplitz_hash_gfni_permute, d0, d1);
+
+ return (u64x8) _mm512_gf2p8affine_epi64_epi8 ((__m512i) d0, (__m512i) m, 0);
+}
+#endif
+
static_always_inline u32
clib_toeplitz_hash (clib_toeplitz_hash_key_t *k, u8 *data, int n_bytes)
{
@@ -48,91 +93,68 @@ clib_toeplitz_hash (clib_toeplitz_hash_key_t *k, u8 *data, int n_bytes)
ASSERT (k->key_length - n_bytes >= 4);
#if defined(__GFNI__) && defined(__AVX512F__)
- u8x64 a, b, dv;
- u64x8 xor_sum_x8 = {};
+ u8x64 d0;
+ u64x8 h0 = {};
u64x8u *m = (u64x8u *) ((u8 *) k + k->gfni_offset);
- u8x64 idx = { 0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x02, 0x03, 0x01, 0x02,
- 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x02, 0x03, 0x04, 0x05,
- 0x02, 0x03, 0x04, 0x05, 0x03, 0x04, 0x05, 0x06, 0x03, 0x04,
- 0x05, 0x06, 0x04, 0x05, 0x06, 0x07, 0x04, 0x05, 0x06, 0x07,
- 0x05, 0x06, 0x07, 0x08, 0x05, 0x06, 0x07, 0x08, 0x06, 0x07,
- 0x08, 0x09, 0x06, 0x07, 0x08, 0x09, 0x07, 0x08, 0x09, 0x0a,
- 0x07, 0x08, 0x09, 0x0a };
-
/* move data ptr backwards for 3 byte so mask load "prepends" three zeros */
data -= 3;
n_bytes += 3;
if (n_bytes < 64)
{
- dv = u8x64_mask_load_zero ((u8 *) data, pow2_mask (n_bytes - 3) << 3);
+ d0 = u8x64_mask_load_zero ((u8 *) data, pow2_mask (n_bytes - 3) << 3);
goto last8;
}
- dv = u8x64_mask_load_zero ((u8 *) data, -1ULL << 3);
+ d0 = u8x64_mask_load_zero ((u8 *) data, -1ULL << 3);
next56:
- a = u8x64_permute (idx, dv);
- b = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 1));
- xor_sum_x8 = u64x8_xor3 (xor_sum_x8, u64x8_gf2p8_affine (a, m[0], 0),
- u64x8_gf2p8_affine (b, m[1], 0));
-
- a = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 2));
- b = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 3));
- xor_sum_x8 = u64x8_xor3 (xor_sum_x8, u64x8_gf2p8_affine (a, m[2], 0),
- u64x8_gf2p8_affine (b, m[3], 0));
-
- a = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 4));
- b = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 5));
- xor_sum_x8 = u64x8_xor3 (xor_sum_x8, u64x8_gf2p8_affine (a, m[4], 0),
- u64x8_gf2p8_affine (b, m[5], 0));
-
- a = u8x64_permute (idx, (u8x64) u64x8_align_right (dv, dv, 6));
- xor_sum_x8 ^= u64x8_gf2p8_affine (a, m[6], 0);
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_one (d0, m[0], 0),
+ clib_toeplitz_hash_gfni_one (d0, m[1], 1));
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_one (d0, m[2], 2),
+ clib_toeplitz_hash_gfni_one (d0, m[3], 3));
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_one (d0, m[4], 4),
+ clib_toeplitz_hash_gfni_one (d0, m[5], 5));
+ h0 ^= clib_toeplitz_hash_gfni_one (d0, m[6], 6);
n_bytes -= 56;
data += 56;
m += 7;
if (n_bytes >= 64)
{
- dv = *(u8x64u *) data;
+ d0 = *(u8x64u *) data;
goto next56;
}
if (n_bytes == 0)
goto done;
- dv = u8x64_mask_load_zero ((u8 *) data, pow2_mask (n_bytes));
+ d0 = u8x64_mask_load_zero ((u8 *) data, pow2_mask (n_bytes));
last8:
- a = u8x64_permute (idx, dv);
- xor_sum_x8 ^= u64x8_gf2p8_affine (a, m[0], 0);
+ h0 ^= clib_toeplitz_hash_gfni_one (d0, m[0], 0);
n_bytes -= 8;
if (n_bytes > 0)
{
m += 1;
- dv = (u8x64) u64x8_align_right (u64x8_zero (), dv, 1);
+ d0 = (u8x64) u64x8_align_right (u64x8_zero (), d0, 1);
goto last8;
}
done:
- /* horizontal xor */
- xor_sum_x8 ^= u64x8_align_right (xor_sum_x8, xor_sum_x8, 4);
- xor_sum_x8 ^= u64x8_align_right (xor_sum_x8, xor_sum_x8, 2);
- return xor_sum_x8[0] ^ xor_sum_x8[1];
+ return u64x8_hxor (h0);
#elif defined(CLIB_HAVE_VEC256)
u64x4 v4, shift = { 0, 1, 2, 3 };
- u32x8 hash8 = {};
- u32x4 hash4;
+ u32x8 h0 = {};
while (n_bytes >= 4)
{
v4 = u64x4_splat (clib_net_to_host_u64 (*(u64u *) key)) << shift;
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[0], 0);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[1], 1);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[2], 2);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[3], 3);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[0], 0);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[1], 1);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[2], 2);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[3], 3);
data += 4;
key += 4;
@@ -149,29 +171,25 @@ done:
v |= (u64) key[5] << 16;
v |= (u64) key[6] << 8;
v4 = u64x4_splat (v) << shift;
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[0], 0);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[1], 1);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[2], 2);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[0], 0);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[1], 1);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[2], 2);
}
else if (n_bytes == 2)
{
v |= (u64) key[5] << 16;
v4 = u64x4_splat (v) << shift;
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[0], 0);
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[1], 1);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[0], 0);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[1], 1);
}
else
{
v4 = u64x4_splat (v) << shift;
- hash8 = toeplitz_hash_one_x8 (hash8, v4, data[0], 0);
+ h0 = toeplitz_hash_one_x8 (h0, v4, data[0], 0);
}
}
- hash4 = u32x8_extract_lo (hash8) ^ u32x8_extract_hi (hash8);
- hash4 ^= (u32x4) u8x16_align_right (hash4, hash4, 8);
- hash4 ^= (u32x4) u8x16_align_right (hash4, hash4, 4);
- return hash4[0];
-
+ return u32x8_hxor (h0);
#endif
u64 v, hash = 0;
@@ -215,4 +233,281 @@ done:
return hash >> 32;
}
+static_always_inline void
+clib_toeplitz_hash_x4 (clib_toeplitz_hash_key_t *k, u8 *data0, u8 *data1,
+ u8 *data2, u8 *data3, u32 *hash0, u32 *hash1,
+ u32 *hash2, u32 *hash3, int n_bytes)
+{
+ /* key must be 4 bytes longer than data */
+ ASSERT (k->key_length - n_bytes >= 4);
+#if defined(__GFNI__) && defined(__AVX512F__)
+ u64x8u *m = (u64x8u *) ((u8 *) k + k->gfni_offset);
+ u8x64 d0, d1, d2, d3;
+ u64x8 h0 = {}, h2 = {};
+ u64 h, mask;
+
+ /* move data ptr backwards for 3 byte so mask load "prepends" three zeros */
+ data0 -= 3;
+ data1 -= 3;
+ data2 -= 3;
+ data3 -= 3;
+ n_bytes += 3;
+
+ if (n_bytes < 64)
+ {
+ mask = pow2_mask (n_bytes - 3) << 3;
+ d0 = u8x64_mask_load_zero ((u8 *) data0, mask);
+ d1 = u8x64_mask_load_zero ((u8 *) data1, mask);
+ d2 = u8x64_mask_load_zero ((u8 *) data2, mask);
+ d3 = u8x64_mask_load_zero ((u8 *) data3, mask);
+ goto last8;
+ }
+
+ mask = -1ULL << 3;
+ d0 = u8x64_mask_load_zero ((u8 *) data0, mask);
+ d1 = u8x64_mask_load_zero ((u8 *) data1, mask);
+ d2 = u8x64_mask_load_zero ((u8 *) data2, mask);
+ d3 = u8x64_mask_load_zero ((u8 *) data3, mask);
+next56:
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_two (d0, d1, m[0], 0),
+ clib_toeplitz_hash_gfni_two (d0, d1, m[1], 1));
+ h2 = u64x8_xor3 (h2, clib_toeplitz_hash_gfni_two (d2, d3, m[0], 0),
+ clib_toeplitz_hash_gfni_two (d2, d3, m[1], 1));
+
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_two (d0, d1, m[2], 2),
+ clib_toeplitz_hash_gfni_two (d0, d1, m[3], 3));
+ h2 = u64x8_xor3 (h2, clib_toeplitz_hash_gfni_two (d2, d3, m[2], 2),
+ clib_toeplitz_hash_gfni_two (d2, d3, m[3], 3));
+
+ h0 = u64x8_xor3 (h0, clib_toeplitz_hash_gfni_two (d0, d1, m[4], 4),
+ clib_toeplitz_hash_gfni_two (d0, d1, m[5], 5));
+ h2 = u64x8_xor3 (h2, clib_toeplitz_hash_gfni_two (d2, d3, m[4], 4),
+ clib_toeplitz_hash_gfni_two (d2, d3, m[5], 5));
+
+ h0 ^= clib_toeplitz_hash_gfni_two (d0, d1, m[6], 6);
+ h2 ^= clib_toeplitz_hash_gfni_two (d2, d3, m[6], 6);
+
+ n_bytes -= 56;
+ data0 += 56;
+ data1 += 56;
+ data2 += 56;
+ data3 += 56;
+ m += 7;
+
+ if (n_bytes >= 64)
+ {
+ d0 = *(u8x64u *) data0;
+ d1 = *(u8x64u *) data1;
+ d2 = *(u8x64u *) data2;
+ d3 = *(u8x64u *) data3;
+ goto next56;
+ }
+
+ if (n_bytes == 0)
+ goto done;
+
+ mask = pow2_mask (n_bytes);
+ d0 = u8x64_mask_load_zero ((u8 *) data0, mask);
+ d1 = u8x64_mask_load_zero ((u8 *) data1, mask);
+ d2 = u8x64_mask_load_zero ((u8 *) data2, mask);
+ d3 = u8x64_mask_load_zero ((u8 *) data3, mask);
+last8:
+ h0 ^= clib_toeplitz_hash_gfni_two (d0, d1, m[0], 0);
+ h2 ^= clib_toeplitz_hash_gfni_two (d2, d3, m[0], 0);
+ n_bytes -= 8;
+
+ if (n_bytes > 0)
+ {
+ u64x8 zero = {};
+ m += 1;
+ d0 = (u8x64) u64x8_align_right (zero, d0, 1);
+ d1 = (u8x64) u64x8_align_right (zero, d1, 1);
+ d2 = (u8x64) u64x8_align_right (zero, d2, 1);
+ d3 = (u8x64) u64x8_align_right (zero, d3, 1);
+ goto last8;
+ }
+
+done:
+ h = u64x8_hxor (h0);
+ *hash0 = h;
+ *hash1 = h >> 32;
+ h = u64x8_hxor (h2);
+ *hash2 = h;
+ *hash3 = h >> 32;
+#elif defined(CLIB_HAVE_VEC256)
+ u8 *key = k->data;
+ u64x4 v4, shift = { 0, 1, 2, 3 };
+ u32x8 h0 = {}, h1 = {}, h2 = {}, h3 = {};
+
+ while (n_bytes >= 4)
+ {
+ v4 = u64x4_splat (clib_net_to_host_u64 (*(u64u *) key)) << shift;
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[0], 0);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[0], 0);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[0], 0);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[0], 0);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[1], 1);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[1], 1);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[1], 1);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[1], 1);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[2], 2);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[2], 2);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[2], 2);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[2], 2);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[3], 3);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[3], 3);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[3], 3);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[3], 3);
+
+ data0 += 4;
+ data1 += 4;
+ data2 += 4;
+ data3 += 4;
+ key += 4;
+ n_bytes -= 4;
+ }
+
+ if (n_bytes)
+ {
+ u64 v = (u64) clib_net_to_host_u32 ((u64) (*(u32u *) key)) << 32;
+ v |= (u64) key[4] << 24;
+
+ if (n_bytes == 3)
+ {
+ v |= (u64) key[5] << 16;
+ v |= (u64) key[6] << 8;
+ v4 = u64x4_splat (v) << shift;
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[0], 0);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[0], 0);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[0], 0);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[0], 0);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[1], 1);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[1], 1);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[1], 1);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[1], 1);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[2], 2);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[2], 2);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[2], 2);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[2], 2);
+ }
+ else if (n_bytes == 2)
+ {
+ v |= (u64) key[5] << 16;
+ v4 = u64x4_splat (v) << shift;
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[0], 0);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[0], 0);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[0], 0);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[0], 0);
+
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[1], 1);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[1], 1);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[1], 1);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[1], 1);
+ }
+ else
+ {
+ v4 = u64x4_splat (v) << shift;
+ h0 = toeplitz_hash_one_x8 (h0, v4, data0[0], 0);
+ h1 = toeplitz_hash_one_x8 (h1, v4, data1[0], 0);
+ h2 = toeplitz_hash_one_x8 (h2, v4, data2[0], 0);
+ h3 = toeplitz_hash_one_x8 (h3, v4, data3[0], 0);
+ }
+ }
+
+ *hash0 = u32x8_hxor (h0);
+ *hash1 = u32x8_hxor (h1);
+ *hash2 = u32x8_hxor (h2);
+ *hash3 = u32x8_hxor (h3);
+#else
+ u8 *key = k->data;
+ u64 v, h0 = 0, h1 = 0, h2 = 0, h3 = 0;
+
+ while (n_bytes >= 4)
+ {
+ v = clib_net_to_host_u64 (*(u64u *) key);
+
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[0] & bit ? v : 0;
+ h1 ^= data1[0] & bit ? v : 0;
+ h2 ^= data2[0] & bit ? v : 0;
+ h3 ^= data3[0] & bit ? v : 0;
+ }
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[1] & bit ? v : 0;
+ h1 ^= data1[1] & bit ? v : 0;
+ h2 ^= data2[1] & bit ? v : 0;
+ h3 ^= data3[1] & bit ? v : 0;
+ }
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[2] & bit ? v : 0;
+ h1 ^= data1[2] & bit ? v : 0;
+ h2 ^= data2[2] & bit ? v : 0;
+ h3 ^= data3[2] & bit ? v : 0;
+ }
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[3] & bit ? v : 0;
+ h1 ^= data1[3] & bit ? v : 0;
+ h2 ^= data2[3] & bit ? v : 0;
+ h3 ^= data3[3] & bit ? v : 0;
+ }
+
+ data0 += 4;
+ data1 += 4;
+ data2 += 4;
+ data3 += 4;
+ key += 4;
+ n_bytes -= 4;
+ }
+
+ if (n_bytes)
+ {
+ v = (u64) clib_net_to_host_u32 ((u64) (*(u32u *) key)) << 32;
+ v |= (u64) key[4] << 24;
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[0] & bit ? v : 0;
+ h1 ^= data1[0] & bit ? v : 0;
+ h2 ^= data2[0] & bit ? v : 0;
+ h3 ^= data3[0] & bit ? v : 0;
+ }
+ if (n_bytes > 1)
+ {
+ v |= (u64) key[5] << 24;
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[1] & bit ? v : 0;
+ h1 ^= data1[1] & bit ? v : 0;
+ h2 ^= data2[1] & bit ? v : 0;
+ h3 ^= data3[1] & bit ? v : 0;
+ }
+ }
+ if (n_bytes > 2)
+ {
+ v |= (u64) key[6] << 24;
+ for (u8 bit = 1 << 7; bit; bit >>= 1, v <<= 1)
+ {
+ h0 ^= data0[2] & bit ? v : 0;
+ h1 ^= data1[2] & bit ? v : 0;
+ h2 ^= data2[2] & bit ? v : 0;
+ h3 ^= data3[2] & bit ? v : 0;
+ }
+ }
+ }
+ *hash0 = h0 >> 32;
+ *hash1 = h1 >> 32;
+ *hash2 = h2 >> 32;
+ *hash3 = h3 >> 32;
+#endif
+}
+
#endif