hash: add support for hashing infra

Type: feature

Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I3652ae275385d9b1eb1b11f418e3a7e5fef2f556

1 files changed, 331 insertions, 0 deletions

diff --git a/src/plugins/unittest/hash_test.c b/src/plugins/unittest/hash_test.c
new file mode 100644
index 00000000000..3b0a3cf04b9
--- /dev/null
+++ b/src/plugins/unittest/hash_test.c
@@ -0,0 +1,331 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ */
+
+#include <vlib/vlib.h>
+#include <vppinfra/time.h>
+#include <vppinfra/cache.h>
+#include <vppinfra/error.h>
+#include <vnet/hash/hash.h>
+#include <vnet/ethernet/ethernet.h>
+
+#define HASH_TEST_DATA_SIZE 2048
+
+typedef struct _hash_test_data
+{
+  const char *name;
+  const char *description;
+  u8 *data;
+  u32 data_size;
+  vnet_hash_fn_type_t ftype;
+  struct _hash_test_data *next;
+} hash_test_data_t;
+
+typedef struct
+{
+  int verbose;
+
+  char *hash_name;
+  u32 warmup_rounds;
+  u32 rounds;
+  u32 n_buffers;
+
+  hash_test_data_t *hash_test_data;
+} hash_test_main_t;
+
+hash_test_main_t hash_test_main;
+
+#define HASH_TEST_REGISTER_DATA(x, ...)                                       \
+  __VA_ARGS__ hash_test_data_t __hash_test_data_##x;                          \
+  static void __clib_constructor __hash_test_data_fn_##x (void)               \
+  {                                                                           \
+    hash_test_main_t *htm = &hash_test_main;                                  \
+    __hash_test_data_##x.next = htm->hash_test_data;                          \
+    htm->hash_test_data = &__hash_test_data_##x;                              \
+  }                                                                           \
+  __VA_ARGS__ hash_test_data_t __hash_test_data_##x
+
+// qinq
+u8 eth_qinq_ipv4_tcp_data[72] = {
+  0x02, 0xfe, 0x39, 0xe5, 0x09, 0x8f, 0x02, 0xfe, 0x2d, 0x18, 0x63, 0x18,
+  0x88, 0xa8, 0x03, 0xe8, 0x81, 0x00, 0x03, 0xe8, 0x08, 0x00, 0x45, 0x00,
+  0x05, 0xdc, 0xdb, 0x42, 0x40, 0x00, 0x40, 0x06, 0xc4, 0x85, 0xc0, 0xa8,
+  0x0a, 0x02, 0xc0, 0xa8, 0x0a, 0x01, 0xd8, 0xde, 0x14, 0x51, 0x34, 0x93,
+  0xa8, 0x1b, 0x7b, 0xef, 0x2e, 0x7e, 0x80, 0x10, 0x00, 0xe5, 0xc7, 0x03,
+  0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0xce, 0xaa, 0x00, 0x2f, 0xf2, 0xc3
+};
+
+HASH_TEST_REGISTER_DATA (eth_qinq_ipv4_tcp, static) = {
+  .name = "eth-qinq-ipv4-tcp",
+  .description = "Ethernet QinQ IPv4 TCP",
+  .data = eth_qinq_ipv4_tcp_data,
+  .data_size = sizeof (eth_qinq_ipv4_tcp_data),
+  .ftype = VNET_HASH_FN_TYPE_ETHERNET,
+};
+
+// vlan
+u8 eth_vlan_ipv4_tcp_data[68] = {
+  0x02, 0xfe, 0x39, 0xe5, 0x09, 0x8f, 0x02, 0xfe, 0x2d, 0x18, 0x63, 0x18,
+  0x81, 0x00, 0x03, 0xe8, 0x08, 0x00, 0x45, 0x00, 0x05, 0xdc, 0xdb, 0x42,
+  0x40, 0x00, 0x40, 0x06, 0xc4, 0x85, 0xc0, 0xa8, 0x0a, 0x02, 0xc0, 0xa8,
+  0x0a, 0x01, 0xd8, 0xde, 0x14, 0x51, 0x34, 0x93, 0xa8, 0x1b, 0x7b, 0xef,
+  0x2e, 0x7e, 0x80, 0x10, 0x00, 0xe5, 0xc7, 0x03, 0x00, 0x00, 0x01, 0x01,
+  0x08, 0x0a, 0xce, 0xaa, 0x00, 0x2f, 0xf2, 0xc3
+};
+
+HASH_TEST_REGISTER_DATA (eth_vlan_ipv4_tcp, static) = {
+  .name = "eth-vlan-ipv4-tcp",
+  .description = "Ethernet Vlan IPv4 TCP",
+  .data = eth_vlan_ipv4_tcp_data,
+  .data_size = sizeof (eth_vlan_ipv4_tcp_data),
+  .ftype = VNET_HASH_FN_TYPE_ETHERNET,
+};
+
+// ethernet
+u8 eth_ipv4_tcp_data[64] = {
+  0x02, 0xfe, 0x39, 0xe5, 0x09, 0x8f, 0x02, 0xfe, 0x2d, 0x18, 0x63, 0x18, 0x08,
+  0x00, 0x45, 0x00, 0x05, 0xdc, 0xdb, 0x42, 0x40, 0x00, 0x40, 0x06, 0xc4, 0x85,
+  0xc0, 0xa8, 0x0a, 0x02, 0xc0, 0xa8, 0x0a, 0x01, 0xd8, 0xde, 0x14, 0x51, 0x34,
+  0x93, 0xa8, 0x1b, 0x7b, 0xef, 0x2e, 0x7e, 0x80, 0x10, 0x00, 0xe5, 0xc7, 0x03,
+  0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0xce, 0xaa, 0x00, 0x2f, 0xf2, 0xc3
+};
+
+HASH_TEST_REGISTER_DATA (eth_ipv4_tcp, static) = {
+  .name = "eth-ipv4-tcp",
+  .description = "Ethernet IPv4 TCP",
+  .data = eth_ipv4_tcp_data,
+  .data_size = sizeof (eth_ipv4_tcp_data),
+  .ftype = VNET_HASH_FN_TYPE_ETHERNET,
+};
+
+// udp
+u8 eth_ipv4_udp_data[42] = { 0x62, 0x36, 0xbe, 0xff, 0x91, 0x20, 0x5e,
+			     0x2c, 0xaf, 0x2e, 0x1e, 0x51, 0x08, 0x00,
+			     0x45, 0x00, 0x05, 0xc4, 0x9d, 0xc3, 0x40,
+			     0x00, 0x33, 0x11, 0x49, 0x61, 0x3e, 0xd2,
+			     0x12, 0x28, 0x0a, 0x09, 0x00, 0x02, 0x14,
+			     0x58, 0xc0, 0xd8, 0x05, 0xb0, 0x75, 0xbd };
+
+HASH_TEST_REGISTER_DATA (eth_ipv4_udp, static) = {
+  .name = "eth-ipv4-udp",
+  .description = "Ethernet IPv4 UDP",
+  .data = eth_ipv4_udp_data,
+  .data_size = sizeof (eth_ipv4_udp_data),
+  .ftype = VNET_HASH_FN_TYPE_ETHERNET,
+};
+
+// ipv4
+u8 ipv4_tcp_data[50] = { 0x45, 0x00, 0x05, 0xdc, 0xdb, 0x42, 0x40, 0x00, 0x40,
+			 0x06, 0xc4, 0x85, 0xc0, 0xa8, 0x0a, 0x02, 0xc0, 0xa8,
+			 0x0a, 0x01, 0xd8, 0xde, 0x14, 0x51, 0x34, 0x93, 0xa8,
+			 0x1b, 0x7b, 0xef, 0x2e, 0x7e, 0x80, 0x10, 0x00, 0xe5,
+			 0xc7, 0x03, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0xce,
+			 0xaa, 0x00, 0x2f, 0xf2, 0xc3 };
+
+HASH_TEST_REGISTER_DATA (ipv4_tcp, static) = {
+  .name = "ipv4-tcp",
+  .description = "IPv4 TCP",
+  .data = ipv4_tcp_data,
+  .data_size = sizeof (ipv4_tcp_data),
+  .ftype = VNET_HASH_FN_TYPE_IP,
+};
+
+u8 ipv4_icmp_data[84] = {
+  0x45, 0x00, 0x00, 0x54, 0xb7, 0xe6, 0x40, 0x00, 0x40, 0x01, 0xed, 0x6e,
+  0xc0, 0xa8, 0x0a, 0x01, 0xc0, 0xa8, 0x0a, 0x02, 0x08, 0x00, 0xc7, 0x84,
+  0x00, 0x16, 0x00, 0x92, 0xfd, 0xdb, 0xd9, 0x60, 0x00, 0x00, 0x00, 0x00,
+  0x91, 0xc3, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x12, 0x13,
+  0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+  0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+  0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37
+
+};
+
+HASH_TEST_REGISTER_DATA (ipv4_icmp, static) = {
+  .name = "ipv4-icmp",
+  .description = "IPv4 ICMP",
+  .data = ipv4_icmp_data,
+  .data_size = sizeof (ipv4_icmp_data),
+  .ftype = VNET_HASH_FN_TYPE_IP,
+};
+
+// ip6
+u8 ipv6_icmp6_data[104] = {
+  0x60, 0x0d, 0xf4, 0x97, 0x00, 0x40, 0x3a, 0x40, 0xfd, 0x01, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0xfd, 0x01,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
+  0x01, 0x80, 0x00, 0x10, 0x84, 0xb1, 0x25, 0x00, 0x01, 0x22, 0x57, 0xf0, 0x60,
+  0x00, 0x00, 0x00, 0x00, 0xcb, 0x4a, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
+  0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
+  0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
+  0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37
+};
+
+HASH_TEST_REGISTER_DATA (ipv6_icmp6, static) = {
+  .name = "ipv6-icmp6",
+  .description = "IPv6 ICMP6",
+  .data = ipv6_icmp6_data,
+  .data_size = sizeof (ipv6_icmp6_data),
+  .ftype = VNET_HASH_FN_TYPE_IP,
+};
+
+void
+fill_buffers (vlib_main_t *vm, u32 *buffer_indices, u8 *data, u32 data_size,
+	      u32 n_buffers)
+{
+  int i, j;
+  u64 seed = clib_cpu_time_now ();
+  for (i = 0; i < n_buffers; i++)
+    {
+      vlib_buffer_t *b = vlib_get_buffer (vm, buffer_indices[i]);
+      clib_memcpy_fast (b->data, data, data_size);
+      b->current_data = 0;
+      for (j = data_size; j < HASH_TEST_DATA_SIZE; j += 8)
+	*(u64 *) (b->data + j) = 1 + random_u64 (&seed);
+      b->current_length = HASH_TEST_DATA_SIZE;
+    }
+}
+
+static clib_error_t *
+test_hash_perf (vlib_main_t *vm, hash_test_main_t *htm)
+{
+  clib_error_t *err = 0;
+  u32 n_buffers, n_alloc = 0, warmup_rounds, rounds;
+  u32 *buffer_indices = 0;
+  u64 t0[5], t1[5];
+  vnet_hash_fn_t hf;
+  hash_test_data_t *hash_test_data = htm->hash_test_data;
+  void **p = 0;
+  int i, j;
+
+  rounds = htm->rounds ? htm->rounds : 100;
+  n_buffers = htm->n_buffers ? htm->n_buffers : 256;
+  warmup_rounds = htm->warmup_rounds ? htm->warmup_rounds : 100;
+
+  vec_validate_aligned (p, n_buffers - 1, CLIB_CACHE_LINE_BYTES);
+  vec_validate_aligned (buffer_indices, n_buffers - 1, CLIB_CACHE_LINE_BYTES);
+  n_alloc = vlib_buffer_alloc (vm, buffer_indices, n_buffers);
+  if (n_alloc != n_buffers)
+    {
+      err = clib_error_return (0, "buffer alloc failure");
+      goto done;
+    }
+
+  vlib_cli_output (vm,
+		   "%s: n_buffers %u rounds %u "
+		   "warmup-rounds %u",
+		   htm->hash_name, n_buffers, rounds, warmup_rounds);
+  vlib_cli_output (vm, "   cpu-freq %.2f GHz",
+		   (f64) vm->clib_time.clocks_per_second * 1e-9);
+
+  while (hash_test_data)
+    {
+      fill_buffers (vm, buffer_indices, hash_test_data->data,
+		    hash_test_data->data_size, n_buffers);
+
+      for (i = 0; i < n_buffers; i++)
+	{
+	  vlib_buffer_t *b = vlib_get_buffer (vm, buffer_indices[i]);
+	  p[i] = vlib_buffer_get_current (b);
+	}
+
+      hf =
+	vnet_hash_function_from_name (htm->hash_name, hash_test_data->ftype);
+
+      if (!hf)
+	{
+	  err = clib_error_return (0, "wrong hash name");
+	  goto done;
+	}
+
+      for (i = 0; i < 5; i++)
+	{
+	  u32 h[n_buffers];
+	  for (j = 0; j < warmup_rounds; j++)
+	    {
+	      hf (p, h, n_buffers);
+	    }
+
+	  t0[i] = clib_cpu_time_now ();
+	  for (j = 0; j < rounds; j++)
+	    hf (p, h, n_buffers);
+	  t1[i] = clib_cpu_time_now ();
+	}
+
+      vlib_cli_output (
+	vm, "===========================================================");
+      vlib_cli_output (vm, " Test: %s", hash_test_data->description);
+      vlib_cli_output (
+	vm, "===========================================================");
+      for (i = 0; i < 5; i++)
+	{
+	  f64 tpp1 = (f64) (t1[i] - t0[i]) / (n_buffers * rounds);
+	  f64 Mpps1 = vm->clib_time.clocks_per_second * 1e-6 / tpp1;
+
+	  vlib_cli_output (vm, "%-2u: %.03f ticks/packet, %.02f Mpps\n", i + 1,
+			   tpp1, Mpps1);
+	}
+      hash_test_data = hash_test_data->next;
+    }
+
+done:
+  if (n_alloc)
+    vlib_buffer_free (vm, buffer_indices, n_alloc);
+
+  vec_free (p);
+  vec_free (buffer_indices);
+  return err;
+}
+
+static clib_error_t *
+test_hash_command_fn (vlib_main_t *vm, unformat_input_t *input,
+		      vlib_cli_command_t *cmd)
+{
+  hash_test_main_t *tm = &hash_test_main;
+  clib_error_t *err = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "verbose"))
+	tm->verbose = 1;
+      else if (unformat (input, "detail"))
+	tm->verbose = 2;
+      else if (unformat (input, "perf %s", &tm->hash_name))
+	;
+      else if (unformat (input, "buffers %u", &tm->n_buffers))
+	;
+      else if (unformat (input, "rounds %u", &tm->rounds))
+	;
+      else if (unformat (input, "warmup-rounds %u", &tm->warmup_rounds))
+	;
+      else
+	{
+	  err = clib_error_return (0, "unknown input '%U'",
+				   format_unformat_error, input);
+	  goto error;
+	}
+    }
+
+  err = test_hash_perf (vm, tm);
+
+error:
+  vec_free (tm->hash_name);
+
+  return err;
+}
+
+VLIB_CLI_COMMAND (test_hash_command, static) = {
+  .path = "test hash",
+  .short_help = "test hash [perf <hash-name>] [buffers <n>] [rounds <n>] "
+		"[warmup-rounds <n>]",
+  .function = test_hash_command_fn,
+};
+
+static clib_error_t *
+hash_test_init (vlib_main_t *vm)
+{
+  return (0);
+}
+
+VLIB_INIT_FUNCTION (hash_test_init);