summaryrefslogtreecommitdiffstats
path: root/src/plugins/dev_iavf/iavf.c
blob: ffb18c7cc94f826685e2245389f60ed7a64941ff (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
/* SPDX-License-Identifier: Apache-2.0
 * Copyright (c) 2023 Cisco Systems, Inc.
 */

#include <vnet/vnet.h>
#include <vnet/dev/dev.h>
#include <vnet/dev/pci.h>
#include <vnet/dev/counters.h>
#include <vppinfra/ring.h>
#include <dev_iavf/iavf.h>
#include <dev_iavf/virtchnl.h>
#include <dev_iavf/virtchnl_funcs.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>

VLIB_REGISTER_LOG_CLASS (iavf_log, static) = {
  .class_name = "iavf",
  .subclass_name = "init",
};

#define IAVF_MAX_QPAIRS 32

static const u32 driver_cap_flags =
  /**/ VIRTCHNL_VF_CAP_ADV_LINK_SPEED |
  /**/ VIRTCHNL_VF_LARGE_NUM_QPAIRS |
  /**/ VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF |
  /**/ VIRTCHNL_VF_OFFLOAD_FDIR_PF |
  /**/ VIRTCHNL_VF_OFFLOAD_L2 |
  /**/ VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
  /**/ VIRTCHNL_VF_OFFLOAD_RSS_PF |
  /**/ VIRTCHNL_VF_OFFLOAD_RX_POLLING |
  /**/ VIRTCHNL_VF_OFFLOAD_VLAN |
  /**/ VIRTCHNL_VF_OFFLOAD_VLAN_V2 |
  /**/ VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
  /**/ 0;

static const virtchnl_version_info_t driver_virtchnl_version = {
  .major = VIRTCHNL_VERSION_MAJOR,
  .minor = VIRTCHNL_VERSION_MINOR,
};

#define _(f, n, s, d)                                                         \
  { .name = #n, .desc = d, .severity = VL_COUNTER_SEVERITY_##s },

vlib_error_desc_t iavf_rx_node_counters[] = { foreach_iavf_rx_node_counter };
vlib_error_desc_t iavf_tx_node_counters[] = { foreach_iavf_tx_node_counter };
#undef _

vnet_dev_node_t iavf_rx_node = {
  .error_counters = iavf_rx_node_counters,
  .n_error_counters = ARRAY_LEN (iavf_rx_node_counters),
  .format_trace = format_iavf_rx_trace,
};

vnet_dev_node_t iavf_tx_node = {
  .error_counters = iavf_tx_node_counters,
  .n_error_counters = ARRAY_LEN (iavf_tx_node_counters),
};

static struct
{
  u16 device_id;
  char *desc;
} iavf_dev_types[] = {
  { 0x1889, "Intel(R) Adaptive Virtual Function" },
  { 0x154c, "Intel(R) X710 Virtual Function" },
  { 0x37cd, "Intel(R) X722 Virtual Function" },
};

static u8 *
iavf_probe (vlib_main_t *vm, vnet_dev_bus_index_t bus_index, void *dev_info)
{
  vnet_dev_bus_pci_device_info_t *di = dev_info;

  if (di->vendor_id != 0x8086)
    return 0;

  FOREACH_ARRAY_ELT (dt, iavf_dev_types)
    {
      if (dt->device_id == di->device_id)
	return format (0, "%s", dt->desc);
    }

  return 0;
}

static vnet_dev_rv_t
iavf_reset (vlib_main_t *vm, vnet_dev_t *dev)
{
  iavf_device_t *ad = vnet_dev_get_data (dev);
  u32 n_tries = 50;

  iavf_aq_init (vm, dev);
  iavf_vc_op_reset_vf (vm, dev);

  do
    {
      if (n_tries-- == 0)
	return VNET_DEV_ERR_TIMEOUT;
      vlib_process_suspend (vm, 0.02);
    }
  while ((iavf_reg_read (ad, IAVF_VFGEN_RSTAT) & 3) != 2);

  iavf_aq_init (vm, dev);
  iavf_aq_poll_on (vm, dev);
  return (VNET_DEV_OK);
}

static vnet_dev_rv_t
iavf_alloc (vlib_main_t *vm, vnet_dev_t *dev)
{
  log_debug (dev, "alloc");
  return iavf_aq_alloc (vm, dev);
}

static vnet_dev_rv_t
iavf_init (vlib_main_t *vm, vnet_dev_t *dev)
{
  iavf_device_t *ad = vnet_dev_get_data (dev);
  virtchnl_version_info_t ver;
  virtchnl_vf_resource_t res;
  u32 n_threads = vlib_get_n_threads ();
  u16 max_frame_sz;
  vnet_dev_rv_t rv;

  log_debug (dev, "init");

  if ((rv = vnet_dev_pci_map_region (vm, dev, 0, &ad->bar0)))
    return rv;

  if ((rv = vnet_dev_pci_bus_master_enable (vm, dev)))
    return rv;

  if ((rv = iavf_reset (vm, dev)))
    return rv;

  if ((rv = iavf_vc_op_version (vm, dev, &driver_virtchnl_version, &ver)))
    return rv;

  if (ver.major != driver_virtchnl_version.major ||
      ver.minor != driver_virtchnl_version.minor)
    return VNET_DEV_ERR_UNSUPPORTED_DEVICE_VER;

  if ((rv = iavf_vc_op_get_vf_resources (vm, dev, &driver_cap_flags, &res)))
    return rv;

  if (res.num_vsis != 1 || res.vsi_res[0].vsi_type != VIRTCHNL_VSI_SRIOV)
    return VNET_DEV_ERR_UNSUPPORTED_DEVICE;

  if (res.max_mtu == 0)
    {
      log_warn (dev, "PF driver is reporting invalid value of 0 for max_mtu, "
		     "consider upgrade");
      max_frame_sz = ETHERNET_MAX_PACKET_BYTES;
    }
  else
    /* reverse of PF driver MTU calculation */
    max_frame_sz = res.max_mtu + 14 /* ethernet header */ + 4 /* FCS */ +
		   2 * 4 /* two VLAN tags */;

  iavf_port_t iavf_port = {
    .vf_cap_flags = res.vf_cap_flags,
    .rss_key_size = res.rss_key_size,
    .rss_lut_size = res.rss_lut_size,
    .max_vectors = res.max_vectors,
    .vsi_id = res.vsi_res[0].vsi_id,
    .num_qp = clib_min (IAVF_MAX_QPAIRS, res.vsi_res[0].num_queue_pairs),
  };

  vnet_dev_port_add_args_t port_add_args = {
    .port = {
      .attr = {
        .type = VNET_DEV_PORT_TYPE_ETHERNET,
        .max_rx_queues = clib_min (IAVF_MAX_QPAIRS, res.num_queue_pairs),
        .max_tx_queues = clib_min (IAVF_MAX_QPAIRS, res.num_queue_pairs),
        .max_supported_rx_frame_size = max_frame_sz,
        .caps.change_max_rx_frame_size = 1,
      },
      .ops = {
        .init = iavf_port_init,
        .start = iavf_port_start,
        .stop = iavf_port_stop,
        .config_change = iavf_port_cfg_change,
        .config_change_validate = iavf_port_cfg_change_validate,
        .format_status = format_iavf_port_status,
      },
      .data_size = sizeof (iavf_port_t),
      .initial_data = &iavf_port,
    },
    .rx_node = &iavf_rx_node,
    .tx_node = &iavf_tx_node,
    .rx_queue = {
      .config = {
        .data_size = sizeof (iavf_rxq_t),
        .default_size = 512,
        .multiplier = 32,
        .min_size = 32,
        .max_size = 4096,
	.size_is_power_of_two = 1,
      },
      .ops = {
        .alloc = iavf_rx_queue_alloc,
        .free = iavf_rx_queue_free,
      },
    },
    .tx_queue = {
      .config = {
        .data_size = sizeof (iavf_txq_t),
        .default_size = 512,
        .multiplier = 32,
        .min_size = 32,
        .max_size = 4096,
	.size_is_power_of_two = 1,
      },
      .ops = {
        .alloc = iavf_tx_queue_alloc,
        .free = iavf_tx_queue_free,
      },
    },
  };

  vnet_dev_set_hw_addr_eth_mac (&port_add_args.port.attr.hw_addr,
				res.vsi_res[0].default_mac_addr);

  log_info (dev, "MAC address is %U", format_ethernet_address,
	    res.vsi_res[0].default_mac_addr);

  if (n_threads <= vnet_dev_get_pci_n_msix_interrupts (dev) - 1)
    {
      port_add_args.port.attr.caps.interrupt_mode = 1;
      iavf_port.n_rx_vectors = n_threads;
    }
  else
    {
      log_notice (
	dev,
	"number of threads (%u) bigger than number of interrupt lines "
	"(%u), interrupt mode disabled",
	vlib_get_n_threads (), res.max_vectors);
      iavf_port.n_rx_vectors = 1;
    }

  if (res.vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF)
    {
      if (res.rss_key_size < IAVF_MAX_RSS_KEY_SIZE)
	{
	  log_notice (
	    dev, "unsupported RSS config provided by device, RSS disabled");
	}
      else
	{
	  port_add_args.port.attr.caps.rss = 1;
	  if (res.rss_lut_size > IAVF_MAX_RSS_LUT_SIZE)
	    log_notice (dev, "device supports bigger RSS LUT than driver");
	}
    }

  return vnet_dev_port_add (vm, dev, 0, &port_add_args);
}

static void
iavf_deinit (vlib_main_t *vm, vnet_dev_t *dev)
{
  log_debug (dev, "deinit");
  iavf_aq_poll_off (vm, dev);
  iavf_aq_deinit (vm, dev);
  iavf_aq_free (vm, dev);
}

static void
iavf_free (vlib_main_t *vm, vnet_dev_t *dev)
{
  log_debug (dev, "free");
  iavf_aq_free (vm, dev);
}

VNET_DEV_REGISTER_DRIVER (avf) = {
  .name = "iavf",
  .bus = "pci",
  .device_data_sz = sizeof (iavf_device_t),
  .runtime_temp_space_sz = sizeof (iavf_rt_data_t),
  .ops = {
    .alloc = iavf_alloc,
    .init = iavf_init,
    .deinit = iavf_deinit,
    .free = iavf_free,
    .probe = iavf_probe,
  },
};

VLIB_PLUGIN_REGISTER () = {
  .version = VPP_BUILD_VER,
  .description = "dev_iavf",
};