net/bnxt: fix FW version query
[dpdk.git] / drivers / net / mlx5 / mlx5_ethdev.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2015 6WIND S.A.
3  * Copyright 2015 Mellanox Technologies, Ltd
4  */
5
6 #include <stddef.h>
7 #include <inttypes.h>
8 #include <unistd.h>
9 #include <stdbool.h>
10 #include <stdint.h>
11 #include <stdio.h>
12 #include <string.h>
13 #include <stdlib.h>
14 #include <errno.h>
15 #include <dirent.h>
16 #include <net/if.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <linux/ethtool.h>
21 #include <linux/sockios.h>
22 #include <fcntl.h>
23 #include <stdalign.h>
24 #include <sys/un.h>
25 #include <time.h>
26
27 #include <rte_atomic.h>
28 #include <rte_ethdev_driver.h>
29 #include <rte_bus_pci.h>
30 #include <rte_mbuf.h>
31 #include <rte_common.h>
32 #include <rte_interrupts.h>
33 #include <rte_malloc.h>
34 #include <rte_string_fns.h>
35 #include <rte_rwlock.h>
36 #include <rte_cycles.h>
37
38 #include <mlx5_glue.h>
39 #include <mlx5_devx_cmds.h>
40 #include <mlx5_common.h>
41
42 #include "mlx5.h"
43 #include "mlx5_rxtx.h"
44 #include "mlx5_utils.h"
45
46 /* Supported speed values found in /usr/include/linux/ethtool.h */
47 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
48 #define SUPPORTED_40000baseKR4_Full (1 << 23)
49 #endif
50 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
51 #define SUPPORTED_40000baseCR4_Full (1 << 24)
52 #endif
53 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
54 #define SUPPORTED_40000baseSR4_Full (1 << 25)
55 #endif
56 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
57 #define SUPPORTED_40000baseLR4_Full (1 << 26)
58 #endif
59 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
60 #define SUPPORTED_56000baseKR4_Full (1 << 27)
61 #endif
62 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
63 #define SUPPORTED_56000baseCR4_Full (1 << 28)
64 #endif
65 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
66 #define SUPPORTED_56000baseSR4_Full (1 << 29)
67 #endif
68 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
69 #define SUPPORTED_56000baseLR4_Full (1 << 30)
70 #endif
71
72 /* Add defines in case the running kernel is not the same as user headers. */
73 #ifndef ETHTOOL_GLINKSETTINGS
74 struct ethtool_link_settings {
75         uint32_t cmd;
76         uint32_t speed;
77         uint8_t duplex;
78         uint8_t port;
79         uint8_t phy_address;
80         uint8_t autoneg;
81         uint8_t mdio_support;
82         uint8_t eth_to_mdix;
83         uint8_t eth_tp_mdix_ctrl;
84         int8_t link_mode_masks_nwords;
85         uint32_t reserved[8];
86         uint32_t link_mode_masks[];
87 };
88
89 /* The kernel values can be found in /include/uapi/linux/ethtool.h */
90 #define ETHTOOL_GLINKSETTINGS 0x0000004c
91 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
92 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
93 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
94 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
95 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
96 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
97 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
98 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
99 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
100 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
101 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
102 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
103 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
104 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
105 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
106 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
107 #endif
108 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
109 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
110 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
111 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
112 #endif
113 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
114 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
115 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
116 #endif
117 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
118 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
119 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
120 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
121 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
122 #endif
123 #ifndef HAVE_ETHTOOL_LINK_MODE_200G
124 #define ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT 62
125 #define ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT 63
126 #define ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT 0 /* 64 - 64 */
127 #define ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT 1 /* 65 - 64 */
128 #define ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT 2 /* 66 - 64 */
129 #endif
130
131 /**
132  * Get master interface name from private structure.
133  *
134  * @param[in] dev
135  *   Pointer to Ethernet device.
136  * @param[out] ifname
137  *   Interface name output buffer.
138  *
139  * @return
140  *   0 on success, a negative errno value otherwise and rte_errno is set.
141  */
142 int
143 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
144 {
145         DIR *dir;
146         struct dirent *dent;
147         unsigned int dev_type = 0;
148         unsigned int dev_port_prev = ~0u;
149         char match[IF_NAMESIZE] = "";
150
151         MLX5_ASSERT(ibdev_path);
152         {
153                 MKSTR(path, "%s/device/net", ibdev_path);
154
155                 dir = opendir(path);
156                 if (dir == NULL) {
157                         rte_errno = errno;
158                         return -rte_errno;
159                 }
160         }
161         while ((dent = readdir(dir)) != NULL) {
162                 char *name = dent->d_name;
163                 FILE *file;
164                 unsigned int dev_port;
165                 int r;
166
167                 if ((name[0] == '.') &&
168                     ((name[1] == '\0') ||
169                      ((name[1] == '.') && (name[2] == '\0'))))
170                         continue;
171
172                 MKSTR(path, "%s/device/net/%s/%s",
173                       ibdev_path, name,
174                       (dev_type ? "dev_id" : "dev_port"));
175
176                 file = fopen(path, "rb");
177                 if (file == NULL) {
178                         if (errno != ENOENT)
179                                 continue;
180                         /*
181                          * Switch to dev_id when dev_port does not exist as
182                          * is the case with Linux kernel versions < 3.15.
183                          */
184 try_dev_id:
185                         match[0] = '\0';
186                         if (dev_type)
187                                 break;
188                         dev_type = 1;
189                         dev_port_prev = ~0u;
190                         rewinddir(dir);
191                         continue;
192                 }
193                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
194                 fclose(file);
195                 if (r != 1)
196                         continue;
197                 /*
198                  * Switch to dev_id when dev_port returns the same value for
199                  * all ports. May happen when using a MOFED release older than
200                  * 3.0 with a Linux kernel >= 3.15.
201                  */
202                 if (dev_port == dev_port_prev)
203                         goto try_dev_id;
204                 dev_port_prev = dev_port;
205                 if (dev_port == 0)
206                         strlcpy(match, name, sizeof(match));
207         }
208         closedir(dir);
209         if (match[0] == '\0') {
210                 rte_errno = ENOENT;
211                 return -rte_errno;
212         }
213         strncpy(*ifname, match, sizeof(*ifname));
214         return 0;
215 }
216
217 /**
218  * Get interface name from private structure.
219  *
220  * This is a port representor-aware version of mlx5_get_master_ifname().
221  *
222  * @param[in] dev
223  *   Pointer to Ethernet device.
224  * @param[out] ifname
225  *   Interface name output buffer.
226  *
227  * @return
228  *   0 on success, a negative errno value otherwise and rte_errno is set.
229  */
230 int
231 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
232 {
233         struct mlx5_priv *priv = dev->data->dev_private;
234         unsigned int ifindex;
235
236         MLX5_ASSERT(priv);
237         MLX5_ASSERT(priv->sh);
238         ifindex = mlx5_ifindex(dev);
239         if (!ifindex) {
240                 if (!priv->representor)
241                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
242                                                       ifname);
243                 rte_errno = ENXIO;
244                 return -rte_errno;
245         }
246         if (if_indextoname(ifindex, &(*ifname)[0]))
247                 return 0;
248         rte_errno = errno;
249         return -rte_errno;
250 }
251
252 /**
253  * Get the interface index from device name.
254  *
255  * @param[in] dev
256  *   Pointer to Ethernet device.
257  *
258  * @return
259  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
260  */
261 unsigned int
262 mlx5_ifindex(const struct rte_eth_dev *dev)
263 {
264         struct mlx5_priv *priv = dev->data->dev_private;
265         unsigned int ifindex;
266
267         MLX5_ASSERT(priv);
268         MLX5_ASSERT(priv->if_index);
269         ifindex = priv->if_index;
270         if (!ifindex)
271                 rte_errno = ENXIO;
272         return ifindex;
273 }
274
275 /**
276  * Perform ifreq ioctl() on associated Ethernet device.
277  *
278  * @param[in] dev
279  *   Pointer to Ethernet device.
280  * @param req
281  *   Request number to pass to ioctl().
282  * @param[out] ifr
283  *   Interface request structure output buffer.
284  *
285  * @return
286  *   0 on success, a negative errno value otherwise and rte_errno is set.
287  */
288 int
289 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
290 {
291         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
292         int ret = 0;
293
294         if (sock == -1) {
295                 rte_errno = errno;
296                 return -rte_errno;
297         }
298         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
299         if (ret)
300                 goto error;
301         ret = ioctl(sock, req, ifr);
302         if (ret == -1) {
303                 rte_errno = errno;
304                 goto error;
305         }
306         close(sock);
307         return 0;
308 error:
309         close(sock);
310         return -rte_errno;
311 }
312
313 /**
314  * Get device MTU.
315  *
316  * @param dev
317  *   Pointer to Ethernet device.
318  * @param[out] mtu
319  *   MTU value output buffer.
320  *
321  * @return
322  *   0 on success, a negative errno value otherwise and rte_errno is set.
323  */
324 int
325 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
326 {
327         struct ifreq request;
328         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
329
330         if (ret)
331                 return ret;
332         *mtu = request.ifr_mtu;
333         return 0;
334 }
335
336 /**
337  * Set device MTU.
338  *
339  * @param dev
340  *   Pointer to Ethernet device.
341  * @param mtu
342  *   MTU value to set.
343  *
344  * @return
345  *   0 on success, a negative errno value otherwise and rte_errno is set.
346  */
347 static int
348 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
349 {
350         struct ifreq request = { .ifr_mtu = mtu, };
351
352         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
353 }
354
355 /**
356  * Set device flags.
357  *
358  * @param dev
359  *   Pointer to Ethernet device.
360  * @param keep
361  *   Bitmask for flags that must remain untouched.
362  * @param flags
363  *   Bitmask for flags to modify.
364  *
365  * @return
366  *   0 on success, a negative errno value otherwise and rte_errno is set.
367  */
368 int
369 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
370 {
371         struct ifreq request;
372         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
373
374         if (ret)
375                 return ret;
376         request.ifr_flags &= keep;
377         request.ifr_flags |= flags & ~keep;
378         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
379 }
380
381 /**
382  * DPDK callback for Ethernet device configuration.
383  *
384  * @param dev
385  *   Pointer to Ethernet device structure.
386  *
387  * @return
388  *   0 on success, a negative errno value otherwise and rte_errno is set.
389  */
390 int
391 mlx5_dev_configure(struct rte_eth_dev *dev)
392 {
393         struct mlx5_priv *priv = dev->data->dev_private;
394         unsigned int rxqs_n = dev->data->nb_rx_queues;
395         unsigned int txqs_n = dev->data->nb_tx_queues;
396         const uint8_t use_app_rss_key =
397                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
398         int ret = 0;
399
400         if (use_app_rss_key &&
401             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
402              MLX5_RSS_HASH_KEY_LEN)) {
403                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
404                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
405                 rte_errno = EINVAL;
406                 return -rte_errno;
407         }
408         priv->rss_conf.rss_key =
409                 rte_realloc(priv->rss_conf.rss_key,
410                             MLX5_RSS_HASH_KEY_LEN, 0);
411         if (!priv->rss_conf.rss_key) {
412                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
413                         dev->data->port_id, rxqs_n);
414                 rte_errno = ENOMEM;
415                 return -rte_errno;
416         }
417
418         if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
419                 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
420
421         memcpy(priv->rss_conf.rss_key,
422                use_app_rss_key ?
423                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
424                rss_hash_default_key,
425                MLX5_RSS_HASH_KEY_LEN);
426         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
427         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
428         priv->rxqs = (void *)dev->data->rx_queues;
429         priv->txqs = (void *)dev->data->tx_queues;
430         if (txqs_n != priv->txqs_n) {
431                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
432                         dev->data->port_id, priv->txqs_n, txqs_n);
433                 priv->txqs_n = txqs_n;
434         }
435         if (rxqs_n > priv->config.ind_table_max_size) {
436                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
437                         dev->data->port_id, rxqs_n);
438                 rte_errno = EINVAL;
439                 return -rte_errno;
440         }
441         if (rxqs_n != priv->rxqs_n) {
442                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
443                         dev->data->port_id, priv->rxqs_n, rxqs_n);
444                 priv->rxqs_n = rxqs_n;
445         }
446         priv->skip_default_rss_reta = 0;
447         ret = mlx5_proc_priv_init(dev);
448         if (ret)
449                 return ret;
450         return 0;
451 }
452
453 /**
454  * Configure default RSS reta.
455  *
456  * @param dev
457  *   Pointer to Ethernet device structure.
458  *
459  * @return
460  *   0 on success, a negative errno value otherwise and rte_errno is set.
461  */
462 int
463 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
464 {
465         struct mlx5_priv *priv = dev->data->dev_private;
466         unsigned int rxqs_n = dev->data->nb_rx_queues;
467         unsigned int i;
468         unsigned int j;
469         unsigned int reta_idx_n;
470         int ret = 0;
471         unsigned int *rss_queue_arr = NULL;
472         unsigned int rss_queue_n = 0;
473
474         if (priv->skip_default_rss_reta)
475                 return ret;
476         rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
477         if (!rss_queue_arr) {
478                 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
479                         dev->data->port_id, rxqs_n);
480                 rte_errno = ENOMEM;
481                 return -rte_errno;
482         }
483         for (i = 0, j = 0; i < rxqs_n; i++) {
484                 struct mlx5_rxq_data *rxq_data;
485                 struct mlx5_rxq_ctrl *rxq_ctrl;
486
487                 rxq_data = (*priv->rxqs)[i];
488                 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
489                 if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
490                         rss_queue_arr[j++] = i;
491         }
492         rss_queue_n = j;
493         if (rss_queue_n > priv->config.ind_table_max_size) {
494                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
495                         dev->data->port_id, rss_queue_n);
496                 rte_errno = EINVAL;
497                 rte_free(rss_queue_arr);
498                 return -rte_errno;
499         }
500         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
501                 dev->data->port_id, priv->rxqs_n, rxqs_n);
502         priv->rxqs_n = rxqs_n;
503         /*
504          * If the requested number of RX queues is not a power of two,
505          * use the maximum indirection table size for better balancing.
506          * The result is always rounded to the next power of two.
507          */
508         reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
509                                 priv->config.ind_table_max_size :
510                                 rss_queue_n));
511         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
512         if (ret) {
513                 rte_free(rss_queue_arr);
514                 return ret;
515         }
516         /*
517          * When the number of RX queues is not a power of two,
518          * the remaining table entries are padded with reused WQs
519          * and hashes are not spread uniformly.
520          */
521         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
522                 (*priv->reta_idx)[i] = rss_queue_arr[j];
523                 if (++j == rss_queue_n)
524                         j = 0;
525         }
526         rte_free(rss_queue_arr);
527         return ret;
528 }
529
530 /**
531  * Sets default tuning parameters.
532  *
533  * @param dev
534  *   Pointer to Ethernet device.
535  * @param[out] info
536  *   Info structure output buffer.
537  */
538 static void
539 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
540 {
541         struct mlx5_priv *priv = dev->data->dev_private;
542
543         /* Minimum CPU utilization. */
544         info->default_rxportconf.ring_size = 256;
545         info->default_txportconf.ring_size = 256;
546         info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST;
547         info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST;
548         if ((priv->link_speed_capa & ETH_LINK_SPEED_200G) |
549                 (priv->link_speed_capa & ETH_LINK_SPEED_100G)) {
550                 info->default_rxportconf.nb_queues = 16;
551                 info->default_txportconf.nb_queues = 16;
552                 if (dev->data->nb_rx_queues > 2 ||
553                     dev->data->nb_tx_queues > 2) {
554                         /* Max Throughput. */
555                         info->default_rxportconf.ring_size = 2048;
556                         info->default_txportconf.ring_size = 2048;
557                 }
558         } else {
559                 info->default_rxportconf.nb_queues = 8;
560                 info->default_txportconf.nb_queues = 8;
561                 if (dev->data->nb_rx_queues > 2 ||
562                     dev->data->nb_tx_queues > 2) {
563                         /* Max Throughput. */
564                         info->default_rxportconf.ring_size = 4096;
565                         info->default_txportconf.ring_size = 4096;
566                 }
567         }
568 }
569
570 /**
571  * Sets tx mbuf limiting parameters.
572  *
573  * @param dev
574  *   Pointer to Ethernet device.
575  * @param[out] info
576  *   Info structure output buffer.
577  */
578 static void
579 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
580 {
581         struct mlx5_priv *priv = dev->data->dev_private;
582         struct mlx5_dev_config *config = &priv->config;
583         unsigned int inlen;
584         uint16_t nb_max;
585
586         inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
587                 MLX5_SEND_DEF_INLINE_LEN :
588                 (unsigned int)config->txq_inline_max;
589         MLX5_ASSERT(config->txq_inline_min >= 0);
590         inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
591         inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
592                                MLX5_ESEG_MIN_INLINE_SIZE -
593                                MLX5_WQE_CSEG_SIZE -
594                                MLX5_WQE_ESEG_SIZE -
595                                MLX5_WQE_DSEG_SIZE * 2);
596         nb_max = (MLX5_WQE_SIZE_MAX +
597                   MLX5_ESEG_MIN_INLINE_SIZE -
598                   MLX5_WQE_CSEG_SIZE -
599                   MLX5_WQE_ESEG_SIZE -
600                   MLX5_WQE_DSEG_SIZE -
601                   inlen) / MLX5_WSEG_SIZE;
602         info->tx_desc_lim.nb_seg_max = nb_max;
603         info->tx_desc_lim.nb_mtu_seg_max = nb_max;
604 }
605
606 /**
607  * DPDK callback to get information about the device.
608  *
609  * @param dev
610  *   Pointer to Ethernet device structure.
611  * @param[out] info
612  *   Info structure output buffer.
613  */
614 int
615 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
616 {
617         struct mlx5_priv *priv = dev->data->dev_private;
618         struct mlx5_dev_config *config = &priv->config;
619         unsigned int max;
620
621         /* FIXME: we should ask the device for these values. */
622         info->min_rx_bufsize = 32;
623         info->max_rx_pktlen = 65536;
624         info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE;
625         /*
626          * Since we need one CQ per QP, the limit is the minimum number
627          * between the two values.
628          */
629         max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
630                       priv->sh->device_attr.orig_attr.max_qp);
631         /* max_rx_queues is uint16_t. */
632         max = RTE_MIN(max, (unsigned int)UINT16_MAX);
633         info->max_rx_queues = max;
634         info->max_tx_queues = max;
635         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
636         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
637         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
638                                  info->rx_queue_offload_capa);
639         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
640         info->if_index = mlx5_ifindex(dev);
641         info->reta_size = priv->reta_idx_n ?
642                 priv->reta_idx_n : config->ind_table_max_size;
643         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
644         info->speed_capa = priv->link_speed_capa;
645         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
646         mlx5_set_default_params(dev, info);
647         mlx5_set_txlimit_params(dev, info);
648         info->switch_info.name = dev->data->name;
649         info->switch_info.domain_id = priv->domain_id;
650         info->switch_info.port_id = priv->representor_id;
651         if (priv->representor) {
652                 uint16_t port_id;
653
654                 if (priv->pf_bond >= 0) {
655                         /*
656                          * Switch port ID is opaque value with driver defined
657                          * format. Push the PF index in bonding configurations
658                          * in upper four bits of port ID. If we get too many
659                          * representors (more than 4K) or PFs (more than 15)
660                          * this approach must be reconsidered.
661                          */
662                         if ((info->switch_info.port_id >>
663                                 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
664                             priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
665                                 DRV_LOG(ERR, "can't update switch port ID"
666                                              " for bonding device");
667                                 MLX5_ASSERT(false);
668                                 return -ENODEV;
669                         }
670                         info->switch_info.port_id |=
671                                 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
672                 }
673                 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
674                         struct mlx5_priv *opriv =
675                                 rte_eth_devices[port_id].data->dev_private;
676
677                         if (!opriv ||
678                             opriv->representor ||
679                             opriv->sh != priv->sh ||
680                             opriv->domain_id != priv->domain_id)
681                                 continue;
682                         /*
683                          * Override switch name with that of the master
684                          * device.
685                          */
686                         info->switch_info.name = opriv->dev_data->name;
687                         break;
688                 }
689         }
690         return 0;
691 }
692
693 /**
694  * Get device current raw clock counter
695  *
696  * @param dev
697  *   Pointer to Ethernet device structure.
698  * @param[out] time
699  *   Current raw clock counter of the device.
700  *
701  * @return
702  *   0 if the clock has correctly been read
703  *   The value of errno in case of error
704  */
705 int
706 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
707 {
708         struct mlx5_priv *priv = dev->data->dev_private;
709         struct ibv_context *ctx = priv->sh->ctx;
710         struct ibv_values_ex values;
711         int err = 0;
712
713         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
714         err = mlx5_glue->query_rt_values_ex(ctx, &values);
715         if (err != 0) {
716                 DRV_LOG(WARNING, "Could not query the clock !");
717                 return err;
718         }
719         *clock = values.raw_clock.tv_nsec;
720         return 0;
721 }
722
723 /**
724  * Get firmware version of a device.
725  *
726  * @param dev
727  *   Ethernet device port.
728  * @param fw_ver
729  *   String output allocated by caller.
730  * @param fw_size
731  *   Size of the output string, including terminating null byte.
732  *
733  * @return
734  *   0 on success, or the size of the non truncated string if too big.
735  */
736 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
737 {
738         struct mlx5_priv *priv = dev->data->dev_private;
739         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
740         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
741
742         if (fw_size < size)
743                 return size;
744         if (fw_ver != NULL)
745                 strlcpy(fw_ver, attr->fw_ver, fw_size);
746         return 0;
747 }
748
749 /**
750  * Get supported packet types.
751  *
752  * @param dev
753  *   Pointer to Ethernet device structure.
754  *
755  * @return
756  *   A pointer to the supported Packet types array.
757  */
758 const uint32_t *
759 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
760 {
761         static const uint32_t ptypes[] = {
762                 /* refers to rxq_cq_to_pkt_type() */
763                 RTE_PTYPE_L2_ETHER,
764                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
765                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
766                 RTE_PTYPE_L4_NONFRAG,
767                 RTE_PTYPE_L4_FRAG,
768                 RTE_PTYPE_L4_TCP,
769                 RTE_PTYPE_L4_UDP,
770                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
771                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
772                 RTE_PTYPE_INNER_L4_NONFRAG,
773                 RTE_PTYPE_INNER_L4_FRAG,
774                 RTE_PTYPE_INNER_L4_TCP,
775                 RTE_PTYPE_INNER_L4_UDP,
776                 RTE_PTYPE_UNKNOWN
777         };
778
779         if (dev->rx_pkt_burst == mlx5_rx_burst ||
780             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
781             dev->rx_pkt_burst == mlx5_rx_burst_vec)
782                 return ptypes;
783         return NULL;
784 }
785
786 /**
787  * Retrieve the master device for representor in the same switch domain.
788  *
789  * @param dev
790  *   Pointer to representor Ethernet device structure.
791  *
792  * @return
793  *   Master device structure  on success, NULL otherwise.
794  */
795
796 static struct rte_eth_dev *
797 mlx5_find_master_dev(struct rte_eth_dev *dev)
798 {
799         struct mlx5_priv *priv;
800         uint16_t port_id;
801         uint16_t domain_id;
802
803         priv = dev->data->dev_private;
804         domain_id = priv->domain_id;
805         MLX5_ASSERT(priv->representor);
806         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
807                 struct mlx5_priv *opriv =
808                         rte_eth_devices[port_id].data->dev_private;
809                 if (opriv &&
810                     opriv->master &&
811                     opriv->domain_id == domain_id &&
812                     opriv->sh == priv->sh)
813                         return &rte_eth_devices[port_id];
814         }
815         return NULL;
816 }
817
818 /**
819  * DPDK callback to retrieve physical link information.
820  *
821  * @param dev
822  *   Pointer to Ethernet device structure.
823  * @param[out] link
824  *   Storage for current link status.
825  *
826  * @return
827  *   0 on success, a negative errno value otherwise and rte_errno is set.
828  */
829 static int
830 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
831                                struct rte_eth_link *link)
832 {
833         struct mlx5_priv *priv = dev->data->dev_private;
834         struct ethtool_cmd edata = {
835                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
836         };
837         struct ifreq ifr;
838         struct rte_eth_link dev_link;
839         int link_speed = 0;
840         int ret;
841
842         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
843         if (ret) {
844                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
845                         dev->data->port_id, strerror(rte_errno));
846                 return ret;
847         }
848         dev_link = (struct rte_eth_link) {
849                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
850                                 (ifr.ifr_flags & IFF_RUNNING)),
851         };
852         ifr = (struct ifreq) {
853                 .ifr_data = (void *)&edata,
854         };
855         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
856         if (ret) {
857                 if (ret == -ENOTSUP && priv->representor) {
858                         struct rte_eth_dev *master;
859
860                         /*
861                          * For representors we can try to inherit link
862                          * settings from the master device. Actually
863                          * link settings do not make a lot of sense
864                          * for representors due to missing physical
865                          * link. The old kernel drivers supported
866                          * emulated settings query for representors,
867                          * the new ones do not, so we have to add
868                          * this code for compatibility issues.
869                          */
870                         master = mlx5_find_master_dev(dev);
871                         if (master) {
872                                 ifr = (struct ifreq) {
873                                         .ifr_data = (void *)&edata,
874                                 };
875                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
876                         }
877                 }
878                 if (ret) {
879                         DRV_LOG(WARNING,
880                                 "port %u ioctl(SIOCETHTOOL,"
881                                 " ETHTOOL_GSET) failed: %s",
882                                 dev->data->port_id, strerror(rte_errno));
883                         return ret;
884                 }
885         }
886         link_speed = ethtool_cmd_speed(&edata);
887         if (link_speed == -1)
888                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
889         else
890                 dev_link.link_speed = link_speed;
891         priv->link_speed_capa = 0;
892         if (edata.supported & SUPPORTED_Autoneg)
893                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
894         if (edata.supported & (SUPPORTED_1000baseT_Full |
895                                SUPPORTED_1000baseKX_Full))
896                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
897         if (edata.supported & SUPPORTED_10000baseKR_Full)
898                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
899         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
900                                SUPPORTED_40000baseCR4_Full |
901                                SUPPORTED_40000baseSR4_Full |
902                                SUPPORTED_40000baseLR4_Full))
903                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
904         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
905                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
906         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
907                         ETH_LINK_SPEED_FIXED);
908         if (((dev_link.link_speed && !dev_link.link_status) ||
909              (!dev_link.link_speed && dev_link.link_status))) {
910                 rte_errno = EAGAIN;
911                 return -rte_errno;
912         }
913         *link = dev_link;
914         return 0;
915 }
916
917 /**
918  * Retrieve physical link information (unlocked version using new ioctl).
919  *
920  * @param dev
921  *   Pointer to Ethernet device structure.
922  * @param[out] link
923  *   Storage for current link status.
924  *
925  * @return
926  *   0 on success, a negative errno value otherwise and rte_errno is set.
927  */
928 static int
929 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
930                              struct rte_eth_link *link)
931
932 {
933         struct mlx5_priv *priv = dev->data->dev_private;
934         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
935         struct ifreq ifr;
936         struct rte_eth_link dev_link;
937         struct rte_eth_dev *master = NULL;
938         uint64_t sc;
939         int ret;
940
941         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
942         if (ret) {
943                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
944                         dev->data->port_id, strerror(rte_errno));
945                 return ret;
946         }
947         dev_link = (struct rte_eth_link) {
948                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
949                                 (ifr.ifr_flags & IFF_RUNNING)),
950         };
951         ifr = (struct ifreq) {
952                 .ifr_data = (void *)&gcmd,
953         };
954         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
955         if (ret) {
956                 if (ret == -ENOTSUP && priv->representor) {
957                         /*
958                          * For representors we can try to inherit link
959                          * settings from the master device. Actually
960                          * link settings do not make a lot of sense
961                          * for representors due to missing physical
962                          * link. The old kernel drivers supported
963                          * emulated settings query for representors,
964                          * the new ones do not, so we have to add
965                          * this code for compatibility issues.
966                          */
967                         master = mlx5_find_master_dev(dev);
968                         if (master) {
969                                 ifr = (struct ifreq) {
970                                         .ifr_data = (void *)&gcmd,
971                                 };
972                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
973                         }
974                 }
975                 if (ret) {
976                         DRV_LOG(DEBUG,
977                                 "port %u ioctl(SIOCETHTOOL,"
978                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
979                                 dev->data->port_id, strerror(rte_errno));
980                         return ret;
981                 }
982
983         }
984         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
985
986         alignas(struct ethtool_link_settings)
987         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
988                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
989         struct ethtool_link_settings *ecmd = (void *)data;
990
991         *ecmd = gcmd;
992         ifr.ifr_data = (void *)ecmd;
993         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
994         if (ret) {
995                 DRV_LOG(DEBUG,
996                         "port %u ioctl(SIOCETHTOOL,"
997                         "ETHTOOL_GLINKSETTINGS) failed: %s",
998                         dev->data->port_id, strerror(rte_errno));
999                 return ret;
1000         }
1001         dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
1002                                                             ecmd->speed;
1003         sc = ecmd->link_mode_masks[0] |
1004                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
1005         priv->link_speed_capa = 0;
1006         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
1007                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
1008         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
1009                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
1010                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
1011         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
1012                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
1013                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
1014                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
1015         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
1016                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
1017                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
1018         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
1019                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
1020                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1021                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1022                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1023         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1024                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1025                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1026                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1027                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1028         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1029                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1030                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1031                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1032         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1033                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1034                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1035         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1036                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1037                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1038                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1039                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1040         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT) |
1041                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT)))
1042                 priv->link_speed_capa |= ETH_LINK_SPEED_200G;
1043
1044         sc = ecmd->link_mode_masks[2] |
1045                 ((uint64_t)ecmd->link_mode_masks[3] << 32);
1046         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT) |
1047                   MLX5_BITSHIFT(
1048                         ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT) |
1049                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT)))
1050                 priv->link_speed_capa |= ETH_LINK_SPEED_200G;
1051         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1052                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1053         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1054                                   ETH_LINK_SPEED_FIXED);
1055         if (((dev_link.link_speed && !dev_link.link_status) ||
1056              (!dev_link.link_speed && dev_link.link_status))) {
1057                 rte_errno = EAGAIN;
1058                 return -rte_errno;
1059         }
1060         *link = dev_link;
1061         return 0;
1062 }
1063
1064 /**
1065  * DPDK callback to retrieve physical link information.
1066  *
1067  * @param dev
1068  *   Pointer to Ethernet device structure.
1069  * @param wait_to_complete
1070  *   Wait for request completion.
1071  *
1072  * @return
1073  *   0 if link status was not updated, positive if it was, a negative errno
1074  *   value otherwise and rte_errno is set.
1075  */
1076 int
1077 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1078 {
1079         int ret;
1080         struct rte_eth_link dev_link;
1081         time_t start_time = time(NULL);
1082         int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
1083
1084         do {
1085                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1086                 if (ret == -ENOTSUP)
1087                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1088                 if (ret == 0)
1089                         break;
1090                 /* Handle wait to complete situation. */
1091                 if ((wait_to_complete || retry) && ret == -EAGAIN) {
1092                         if (abs((int)difftime(time(NULL), start_time)) <
1093                             MLX5_LINK_STATUS_TIMEOUT) {
1094                                 usleep(0);
1095                                 continue;
1096                         } else {
1097                                 rte_errno = EBUSY;
1098                                 return -rte_errno;
1099                         }
1100                 } else if (ret < 0) {
1101                         return ret;
1102                 }
1103         } while (wait_to_complete || retry-- > 0);
1104         ret = !!memcmp(&dev->data->dev_link, &dev_link,
1105                        sizeof(struct rte_eth_link));
1106         dev->data->dev_link = dev_link;
1107         return ret;
1108 }
1109
1110 /**
1111  * DPDK callback to change the MTU.
1112  *
1113  * @param dev
1114  *   Pointer to Ethernet device structure.
1115  * @param in_mtu
1116  *   New MTU.
1117  *
1118  * @return
1119  *   0 on success, a negative errno value otherwise and rte_errno is set.
1120  */
1121 int
1122 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1123 {
1124         struct mlx5_priv *priv = dev->data->dev_private;
1125         uint16_t kern_mtu = 0;
1126         int ret;
1127
1128         ret = mlx5_get_mtu(dev, &kern_mtu);
1129         if (ret)
1130                 return ret;
1131         /* Set kernel interface MTU first. */
1132         ret = mlx5_set_mtu(dev, mtu);
1133         if (ret)
1134                 return ret;
1135         ret = mlx5_get_mtu(dev, &kern_mtu);
1136         if (ret)
1137                 return ret;
1138         if (kern_mtu == mtu) {
1139                 priv->mtu = mtu;
1140                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1141                         dev->data->port_id, mtu);
1142                 return 0;
1143         }
1144         rte_errno = EAGAIN;
1145         return -rte_errno;
1146 }
1147
1148 /**
1149  * DPDK callback to get flow control status.
1150  *
1151  * @param dev
1152  *   Pointer to Ethernet device structure.
1153  * @param[out] fc_conf
1154  *   Flow control output buffer.
1155  *
1156  * @return
1157  *   0 on success, a negative errno value otherwise and rte_errno is set.
1158  */
1159 int
1160 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1161 {
1162         struct ifreq ifr;
1163         struct ethtool_pauseparam ethpause = {
1164                 .cmd = ETHTOOL_GPAUSEPARAM
1165         };
1166         int ret;
1167
1168         ifr.ifr_data = (void *)&ethpause;
1169         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1170         if (ret) {
1171                 DRV_LOG(WARNING,
1172                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1173                         " %s",
1174                         dev->data->port_id, strerror(rte_errno));
1175                 return ret;
1176         }
1177         fc_conf->autoneg = ethpause.autoneg;
1178         if (ethpause.rx_pause && ethpause.tx_pause)
1179                 fc_conf->mode = RTE_FC_FULL;
1180         else if (ethpause.rx_pause)
1181                 fc_conf->mode = RTE_FC_RX_PAUSE;
1182         else if (ethpause.tx_pause)
1183                 fc_conf->mode = RTE_FC_TX_PAUSE;
1184         else
1185                 fc_conf->mode = RTE_FC_NONE;
1186         return 0;
1187 }
1188
1189 /**
1190  * DPDK callback to modify flow control parameters.
1191  *
1192  * @param dev
1193  *   Pointer to Ethernet device structure.
1194  * @param[in] fc_conf
1195  *   Flow control parameters.
1196  *
1197  * @return
1198  *   0 on success, a negative errno value otherwise and rte_errno is set.
1199  */
1200 int
1201 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1202 {
1203         struct ifreq ifr;
1204         struct ethtool_pauseparam ethpause = {
1205                 .cmd = ETHTOOL_SPAUSEPARAM
1206         };
1207         int ret;
1208
1209         ifr.ifr_data = (void *)&ethpause;
1210         ethpause.autoneg = fc_conf->autoneg;
1211         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1212             (fc_conf->mode & RTE_FC_RX_PAUSE))
1213                 ethpause.rx_pause = 1;
1214         else
1215                 ethpause.rx_pause = 0;
1216
1217         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1218             (fc_conf->mode & RTE_FC_TX_PAUSE))
1219                 ethpause.tx_pause = 1;
1220         else
1221                 ethpause.tx_pause = 0;
1222         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1223         if (ret) {
1224                 DRV_LOG(WARNING,
1225                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1226                         " failed: %s",
1227                         dev->data->port_id, strerror(rte_errno));
1228                 return ret;
1229         }
1230         return 0;
1231 }
1232
1233 /**
1234  * Handle asynchronous removal event for entire multiport device.
1235  *
1236  * @param sh
1237  *   Infiniband device shared context.
1238  */
1239 static void
1240 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1241 {
1242         uint32_t i;
1243
1244         for (i = 0; i < sh->max_port; ++i) {
1245                 struct rte_eth_dev *dev;
1246
1247                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1248                         /*
1249                          * Or not existing port either no
1250                          * handler installed for this port.
1251                          */
1252                         continue;
1253                 }
1254                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1255                 MLX5_ASSERT(dev);
1256                 if (dev->data->dev_conf.intr_conf.rmv)
1257                         _rte_eth_dev_callback_process
1258                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1259         }
1260 }
1261
1262 /**
1263  * Handle shared asynchronous events the NIC (removal event
1264  * and link status change). Supports multiport IB device.
1265  *
1266  * @param cb_arg
1267  *   Callback argument.
1268  */
1269 void
1270 mlx5_dev_interrupt_handler(void *cb_arg)
1271 {
1272         struct mlx5_ibv_shared *sh = cb_arg;
1273         struct ibv_async_event event;
1274
1275         /* Read all message from the IB device and acknowledge them. */
1276         for (;;) {
1277                 struct rte_eth_dev *dev;
1278                 uint32_t tmp;
1279
1280                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1281                         break;
1282                 /* Retrieve and check IB port index. */
1283                 tmp = (uint32_t)event.element.port_num;
1284                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1285                         /*
1286                          * The DEVICE_FATAL event is called once for
1287                          * entire device without port specifying.
1288                          * We should notify all existing ports.
1289                          */
1290                         mlx5_glue->ack_async_event(&event);
1291                         mlx5_dev_interrupt_device_fatal(sh);
1292                         continue;
1293                 }
1294                 MLX5_ASSERT(tmp && (tmp <= sh->max_port));
1295                 if (!tmp) {
1296                         /* Unsupported devive level event. */
1297                         mlx5_glue->ack_async_event(&event);
1298                         DRV_LOG(DEBUG,
1299                                 "unsupported common event (type %d)",
1300                                 event.event_type);
1301                         continue;
1302                 }
1303                 if (tmp > sh->max_port) {
1304                         /* Invalid IB port index. */
1305                         mlx5_glue->ack_async_event(&event);
1306                         DRV_LOG(DEBUG,
1307                                 "cannot handle an event (type %d)"
1308                                 "due to invalid IB port index (%u)",
1309                                 event.event_type, tmp);
1310                         continue;
1311                 }
1312                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1313                         /* No handler installed. */
1314                         mlx5_glue->ack_async_event(&event);
1315                         DRV_LOG(DEBUG,
1316                                 "cannot handle an event (type %d)"
1317                                 "due to no handler installed for port %u",
1318                                 event.event_type, tmp);
1319                         continue;
1320                 }
1321                 /* Retrieve ethernet device descriptor. */
1322                 tmp = sh->port[tmp - 1].ih_port_id;
1323                 dev = &rte_eth_devices[tmp];
1324                 MLX5_ASSERT(dev);
1325                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1326                      event.event_type == IBV_EVENT_PORT_ERR) &&
1327                         dev->data->dev_conf.intr_conf.lsc) {
1328                         mlx5_glue->ack_async_event(&event);
1329                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1330                                 usleep(0);
1331                                 continue;
1332                         }
1333                         _rte_eth_dev_callback_process
1334                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1335                         continue;
1336                 }
1337                 DRV_LOG(DEBUG,
1338                         "port %u cannot handle an unknown event (type %d)",
1339                         dev->data->port_id, event.event_type);
1340                 mlx5_glue->ack_async_event(&event);
1341         }
1342 }
1343
1344 /*
1345  * Unregister callback handler safely. The handler may be active
1346  * while we are trying to unregister it, in this case code -EAGAIN
1347  * is returned by rte_intr_callback_unregister(). This routine checks
1348  * the return code and tries to unregister handler again.
1349  *
1350  * @param handle
1351  *   interrupt handle
1352  * @param cb_fn
1353  *   pointer to callback routine
1354  * @cb_arg
1355  *   opaque callback parameter
1356  */
1357 void
1358 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1359                               rte_intr_callback_fn cb_fn, void *cb_arg)
1360 {
1361         /*
1362          * Try to reduce timeout management overhead by not calling
1363          * the timer related routines on the first iteration. If the
1364          * unregistering succeeds on first call there will be no
1365          * timer calls at all.
1366          */
1367         uint64_t twait = 0;
1368         uint64_t start = 0;
1369
1370         do {
1371                 int ret;
1372
1373                 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1374                 if (ret >= 0)
1375                         return;
1376                 if (ret != -EAGAIN) {
1377                         DRV_LOG(INFO, "failed to unregister interrupt"
1378                                       " handler (error: %d)", ret);
1379                         MLX5_ASSERT(false);
1380                         return;
1381                 }
1382                 if (twait) {
1383                         struct timespec onems;
1384
1385                         /* Wait one millisecond and try again. */
1386                         onems.tv_sec = 0;
1387                         onems.tv_nsec = NS_PER_S / MS_PER_S;
1388                         nanosleep(&onems, 0);
1389                         /* Check whether one second elapsed. */
1390                         if ((rte_get_timer_cycles() - start) <= twait)
1391                                 continue;
1392                 } else {
1393                         /*
1394                          * We get the amount of timer ticks for one second.
1395                          * If this amount elapsed it means we spent one
1396                          * second in waiting. This branch is executed once
1397                          * on first iteration.
1398                          */
1399                         twait = rte_get_timer_hz();
1400                         MLX5_ASSERT(twait);
1401                 }
1402                 /*
1403                  * Timeout elapsed, show message (once a second) and retry.
1404                  * We have no other acceptable option here, if we ignore
1405                  * the unregistering return code the handler will not
1406                  * be unregistered, fd will be closed and we may get the
1407                  * crush. Hanging and messaging in the loop seems not to be
1408                  * the worst choice.
1409                  */
1410                 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1411                 start = rte_get_timer_cycles();
1412         } while (true);
1413 }
1414
1415 /**
1416  * Handle DEVX interrupts from the NIC.
1417  * This function is probably called from the DPDK host thread.
1418  *
1419  * @param cb_arg
1420  *   Callback argument.
1421  */
1422 void
1423 mlx5_dev_interrupt_handler_devx(void *cb_arg)
1424 {
1425 #ifndef HAVE_IBV_DEVX_ASYNC
1426         (void)cb_arg;
1427         return;
1428 #else
1429         struct mlx5_ibv_shared *sh = cb_arg;
1430         union {
1431                 struct mlx5dv_devx_async_cmd_hdr cmd_resp;
1432                 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
1433                             MLX5_ST_SZ_BYTES(traffic_counter) +
1434                             sizeof(struct mlx5dv_devx_async_cmd_hdr)];
1435         } out;
1436         uint8_t *buf = out.buf + sizeof(out.cmd_resp);
1437
1438         while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp,
1439                                                    &out.cmd_resp,
1440                                                    sizeof(out.buf)))
1441                 mlx5_flow_async_pool_query_handle
1442                         (sh, (uint64_t)out.cmd_resp.wr_id,
1443                          mlx5_devx_get_out_command_status(buf));
1444 #endif /* HAVE_IBV_DEVX_ASYNC */
1445 }
1446
1447 /**
1448  * Uninstall shared asynchronous device events handler.
1449  * This function is implemented to support event sharing
1450  * between multiple ports of single IB device.
1451  *
1452  * @param dev
1453  *   Pointer to Ethernet device.
1454  */
1455 static void
1456 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1457 {
1458         struct mlx5_priv *priv = dev->data->dev_private;
1459         struct mlx5_ibv_shared *sh = priv->sh;
1460
1461         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1462                 return;
1463         pthread_mutex_lock(&sh->intr_mutex);
1464         MLX5_ASSERT(priv->ibv_port);
1465         MLX5_ASSERT(priv->ibv_port <= sh->max_port);
1466         MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS);
1467         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1468                 goto exit;
1469         MLX5_ASSERT(sh->port[priv->ibv_port - 1].ih_port_id ==
1470                                         (uint32_t)dev->data->port_id);
1471         MLX5_ASSERT(sh->intr_cnt);
1472         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1473         if (!sh->intr_cnt || --sh->intr_cnt)
1474                 goto exit;
1475         mlx5_intr_callback_unregister(&sh->intr_handle,
1476                                      mlx5_dev_interrupt_handler, sh);
1477         sh->intr_handle.fd = 0;
1478         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1479 exit:
1480         pthread_mutex_unlock(&sh->intr_mutex);
1481 }
1482
1483 /**
1484  * Uninstall devx shared asynchronous device events handler.
1485  * This function is implemeted to support event sharing
1486  * between multiple ports of single IB device.
1487  *
1488  * @param dev
1489  *   Pointer to Ethernet device.
1490  */
1491 static void
1492 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev)
1493 {
1494         struct mlx5_priv *priv = dev->data->dev_private;
1495         struct mlx5_ibv_shared *sh = priv->sh;
1496
1497         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1498                 return;
1499         pthread_mutex_lock(&sh->intr_mutex);
1500         MLX5_ASSERT(priv->ibv_port);
1501         MLX5_ASSERT(priv->ibv_port <= sh->max_port);
1502         MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS);
1503         if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS)
1504                 goto exit;
1505         MLX5_ASSERT(sh->port[priv->ibv_port - 1].devx_ih_port_id ==
1506                     (uint32_t)dev->data->port_id);
1507         sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS;
1508         if (!sh->devx_intr_cnt || --sh->devx_intr_cnt)
1509                 goto exit;
1510         if (sh->intr_handle_devx.fd) {
1511                 rte_intr_callback_unregister(&sh->intr_handle_devx,
1512                                              mlx5_dev_interrupt_handler_devx,
1513                                              sh);
1514                 sh->intr_handle_devx.fd = 0;
1515                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN;
1516         }
1517         if (sh->devx_comp) {
1518                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
1519                 sh->devx_comp = NULL;
1520         }
1521 exit:
1522         pthread_mutex_unlock(&sh->intr_mutex);
1523 }
1524
1525 /**
1526  * Install shared asynchronous device events handler.
1527  * This function is implemented to support event sharing
1528  * between multiple ports of single IB device.
1529  *
1530  * @param dev
1531  *   Pointer to Ethernet device.
1532  */
1533 static void
1534 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1535 {
1536         struct mlx5_priv *priv = dev->data->dev_private;
1537         struct mlx5_ibv_shared *sh = priv->sh;
1538         int ret;
1539         int flags;
1540
1541         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1542                 return;
1543         pthread_mutex_lock(&sh->intr_mutex);
1544         MLX5_ASSERT(priv->ibv_port);
1545         MLX5_ASSERT(priv->ibv_port <= sh->max_port);
1546         MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS);
1547         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1548                 /* The handler is already installed for this port. */
1549                 MLX5_ASSERT(sh->intr_cnt);
1550                 goto exit;
1551         }
1552         if (sh->intr_cnt) {
1553                 sh->port[priv->ibv_port - 1].ih_port_id =
1554                                                 (uint32_t)dev->data->port_id;
1555                 sh->intr_cnt++;
1556                 goto exit;
1557         }
1558         /* No shared handler installed. */
1559         MLX5_ASSERT(sh->ctx->async_fd > 0);
1560         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1561         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1562         if (ret) {
1563                 DRV_LOG(INFO, "failed to change file descriptor async event"
1564                         " queue");
1565                 /* Indicate there will be no interrupts. */
1566                 dev->data->dev_conf.intr_conf.lsc = 0;
1567                 dev->data->dev_conf.intr_conf.rmv = 0;
1568         } else {
1569                 sh->intr_handle.fd = sh->ctx->async_fd;
1570                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1571                 rte_intr_callback_register(&sh->intr_handle,
1572                                            mlx5_dev_interrupt_handler, sh);
1573                 sh->intr_cnt++;
1574                 sh->port[priv->ibv_port - 1].ih_port_id =
1575                                                 (uint32_t)dev->data->port_id;
1576         }
1577 exit:
1578         pthread_mutex_unlock(&sh->intr_mutex);
1579 }
1580
1581 /**
1582  * Install devx shared asyncronous device events handler.
1583  * This function is implemeted to support event sharing
1584  * between multiple ports of single IB device.
1585  *
1586  * @param dev
1587  *   Pointer to Ethernet device.
1588  */
1589 static void
1590 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev)
1591 {
1592         struct mlx5_priv *priv = dev->data->dev_private;
1593         struct mlx5_ibv_shared *sh = priv->sh;
1594
1595         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1596                 return;
1597         pthread_mutex_lock(&sh->intr_mutex);
1598         MLX5_ASSERT(priv->ibv_port);
1599         MLX5_ASSERT(priv->ibv_port <= sh->max_port);
1600         MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS);
1601         if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) {
1602                 /* The handler is already installed for this port. */
1603                 MLX5_ASSERT(sh->devx_intr_cnt);
1604                 goto exit;
1605         }
1606         if (sh->devx_intr_cnt) {
1607                 sh->devx_intr_cnt++;
1608                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1609                                         (uint32_t)dev->data->port_id;
1610                 goto exit;
1611         }
1612         if (priv->config.devx) {
1613 #ifndef HAVE_IBV_DEVX_ASYNC
1614                 goto exit;
1615 #else
1616                 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx);
1617                 if (sh->devx_comp) {
1618                         int flags = fcntl(sh->devx_comp->fd, F_GETFL);
1619                         int ret = fcntl(sh->devx_comp->fd, F_SETFL,
1620                                     flags | O_NONBLOCK);
1621
1622                         if (ret) {
1623                                 DRV_LOG(INFO, "failed to change file descriptor"
1624                                         " devx async event queue");
1625                         } else {
1626                                 sh->intr_handle_devx.fd = sh->devx_comp->fd;
1627                                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
1628                                 rte_intr_callback_register
1629                                         (&sh->intr_handle_devx,
1630                                          mlx5_dev_interrupt_handler_devx, sh);
1631                                 sh->devx_intr_cnt++;
1632                                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1633                                                 (uint32_t)dev->data->port_id;
1634                         }
1635                 }
1636 #endif /* HAVE_IBV_DEVX_ASYNC */
1637         }
1638 exit:
1639         pthread_mutex_unlock(&sh->intr_mutex);
1640 }
1641
1642 /**
1643  * Uninstall interrupt handler.
1644  *
1645  * @param dev
1646  *   Pointer to Ethernet device.
1647  */
1648 void
1649 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1650 {
1651         mlx5_dev_shared_handler_uninstall(dev);
1652 }
1653
1654 /**
1655  * Install interrupt handler.
1656  *
1657  * @param dev
1658  *   Pointer to Ethernet device.
1659  */
1660 void
1661 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1662 {
1663         mlx5_dev_shared_handler_install(dev);
1664 }
1665
1666 /**
1667  * Devx uninstall interrupt handler.
1668  *
1669  * @param dev
1670  *   Pointer to Ethernet device.
1671  */
1672 void
1673 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev)
1674 {
1675         mlx5_dev_shared_handler_devx_uninstall(dev);
1676 }
1677
1678 /**
1679  * Devx install interrupt handler.
1680  *
1681  * @param dev
1682  *   Pointer to Ethernet device.
1683  */
1684 void
1685 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev)
1686 {
1687         mlx5_dev_shared_handler_devx_install(dev);
1688 }
1689
1690 /**
1691  * DPDK callback to bring the link DOWN.
1692  *
1693  * @param dev
1694  *   Pointer to Ethernet device structure.
1695  *
1696  * @return
1697  *   0 on success, a negative errno value otherwise and rte_errno is set.
1698  */
1699 int
1700 mlx5_set_link_down(struct rte_eth_dev *dev)
1701 {
1702         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1703 }
1704
1705 /**
1706  * DPDK callback to bring the link UP.
1707  *
1708  * @param dev
1709  *   Pointer to Ethernet device structure.
1710  *
1711  * @return
1712  *   0 on success, a negative errno value otherwise and rte_errno is set.
1713  */
1714 int
1715 mlx5_set_link_up(struct rte_eth_dev *dev)
1716 {
1717         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1718 }
1719
1720 /**
1721  * Configure the RX function to use.
1722  *
1723  * @param dev
1724  *   Pointer to private data structure.
1725  *
1726  * @return
1727  *   Pointer to selected Rx burst function.
1728  */
1729 eth_rx_burst_t
1730 mlx5_select_rx_function(struct rte_eth_dev *dev)
1731 {
1732         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1733
1734         MLX5_ASSERT(dev != NULL);
1735         if (mlx5_check_vec_rx_support(dev) > 0) {
1736                 rx_pkt_burst = mlx5_rx_burst_vec;
1737                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1738                         dev->data->port_id);
1739         } else if (mlx5_mprq_enabled(dev)) {
1740                 rx_pkt_burst = mlx5_rx_burst_mprq;
1741         }
1742         return rx_pkt_burst;
1743 }
1744
1745 /**
1746  * Check if mlx5 device was removed.
1747  *
1748  * @param dev
1749  *   Pointer to Ethernet device structure.
1750  *
1751  * @return
1752  *   1 when device is removed, otherwise 0.
1753  */
1754 int
1755 mlx5_is_removed(struct rte_eth_dev *dev)
1756 {
1757         struct ibv_device_attr device_attr;
1758         struct mlx5_priv *priv = dev->data->dev_private;
1759
1760         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1761                 return 1;
1762         return 0;
1763 }
1764
1765 /**
1766  * Get the E-Switch parameters by port id.
1767  *
1768  * @param[in] port
1769  *   Device port id.
1770  * @param[in] valid
1771  *   Device port id is valid, skip check. This flag is useful
1772  *   when trials are performed from probing and device is not
1773  *   flagged as valid yet (in attaching process).
1774  * @param[out] es_domain_id
1775  *   E-Switch domain id.
1776  * @param[out] es_port_id
1777  *   The port id of the port in the E-Switch.
1778  *
1779  * @return
1780  *   pointer to device private data structure containing data needed
1781  *   on success, NULL otherwise and rte_errno is set.
1782  */
1783 struct mlx5_priv *
1784 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
1785 {
1786         struct rte_eth_dev *dev;
1787         struct mlx5_priv *priv;
1788
1789         if (port >= RTE_MAX_ETHPORTS) {
1790                 rte_errno = EINVAL;
1791                 return NULL;
1792         }
1793         if (!valid && !rte_eth_dev_is_valid_port(port)) {
1794                 rte_errno = ENODEV;
1795                 return NULL;
1796         }
1797         dev = &rte_eth_devices[port];
1798         priv = dev->data->dev_private;
1799         if (!(priv->representor || priv->master)) {
1800                 rte_errno = EINVAL;
1801                 return NULL;
1802         }
1803         return priv;
1804 }
1805
1806 /**
1807  * Get the E-Switch parameters by device instance.
1808  *
1809  * @param[in] port
1810  *   Device port id.
1811  * @param[out] es_domain_id
1812  *   E-Switch domain id.
1813  * @param[out] es_port_id
1814  *   The port id of the port in the E-Switch.
1815  *
1816  * @return
1817  *   pointer to device private data structure containing data needed
1818  *   on success, NULL otherwise and rte_errno is set.
1819  */
1820 struct mlx5_priv *
1821 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
1822 {
1823         struct mlx5_priv *priv;
1824
1825         priv = dev->data->dev_private;
1826         if (!(priv->representor || priv->master)) {
1827                 rte_errno = EINVAL;
1828                 return NULL;
1829         }
1830         return priv;
1831 }
1832
1833 /**
1834  * Get switch information associated with network interface.
1835  *
1836  * @param ifindex
1837  *   Network interface index.
1838  * @param[out] info
1839  *   Switch information object, populated in case of success.
1840  *
1841  * @return
1842  *   0 on success, a negative errno value otherwise and rte_errno is set.
1843  */
1844 int
1845 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1846 {
1847         char ifname[IF_NAMESIZE];
1848         char port_name[IF_NAMESIZE];
1849         FILE *file;
1850         struct mlx5_switch_info data = {
1851                 .master = 0,
1852                 .representor = 0,
1853                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1854                 .port_name = 0,
1855                 .switch_id = 0,
1856         };
1857         DIR *dir;
1858         bool port_switch_id_set = false;
1859         bool device_dir = false;
1860         char c;
1861         int ret;
1862
1863         if (!if_indextoname(ifindex, ifname)) {
1864                 rte_errno = errno;
1865                 return -rte_errno;
1866         }
1867
1868         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1869               ifname);
1870         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1871               ifname);
1872         MKSTR(pci_device, "/sys/class/net/%s/device",
1873               ifname);
1874
1875         file = fopen(phys_port_name, "rb");
1876         if (file != NULL) {
1877                 ret = fscanf(file, "%s", port_name);
1878                 fclose(file);
1879                 if (ret == 1)
1880                         mlx5_translate_port_name(port_name, &data);
1881         }
1882         file = fopen(phys_switch_id, "rb");
1883         if (file == NULL) {
1884                 rte_errno = errno;
1885                 return -rte_errno;
1886         }
1887         port_switch_id_set =
1888                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1889                 c == '\n';
1890         fclose(file);
1891         dir = opendir(pci_device);
1892         if (dir != NULL) {
1893                 closedir(dir);
1894                 device_dir = true;
1895         }
1896         if (port_switch_id_set) {
1897                 /* We have some E-Switch configuration. */
1898                 mlx5_sysfs_check_switch_info(device_dir, &data);
1899         }
1900         *info = data;
1901         MLX5_ASSERT(!(data.master && data.representor));
1902         if (data.master && data.representor) {
1903                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1904                              " and as representor", ifindex);
1905                 rte_errno = ENODEV;
1906                 return -rte_errno;
1907         }
1908         return 0;
1909 }
1910
1911 /**
1912  * Analyze gathered port parameters via sysfs to recognize master
1913  * and representor devices for E-Switch configuration.
1914  *
1915  * @param[in] device_dir
1916  *   flag of presence of "device" directory under port device key.
1917  * @param[inout] switch_info
1918  *   Port information, including port name as a number and port name
1919  *   type if recognized
1920  *
1921  * @return
1922  *   master and representor flags are set in switch_info according to
1923  *   recognized parameters (if any).
1924  */
1925 void
1926 mlx5_sysfs_check_switch_info(bool device_dir,
1927                              struct mlx5_switch_info *switch_info)
1928 {
1929         switch (switch_info->name_type) {
1930         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1931                 /*
1932                  * Name is not recognized, assume the master,
1933                  * check the device directory presence.
1934                  */
1935                 switch_info->master = device_dir;
1936                 break;
1937         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1938                 /*
1939                  * Name is not set, this assumes the legacy naming
1940                  * schema for master, just check if there is
1941                  * a device directory.
1942                  */
1943                 switch_info->master = device_dir;
1944                 break;
1945         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1946                 /* New uplink naming schema recognized. */
1947                 switch_info->master = 1;
1948                 break;
1949         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1950                 /* Legacy representors naming schema. */
1951                 switch_info->representor = !device_dir;
1952                 break;
1953         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1954                 /* New representors naming schema. */
1955                 switch_info->representor = 1;
1956                 break;
1957         }
1958 }
1959
1960 /**
1961  * DPDK callback to retrieve plug-in module EEPROM information (type and size).
1962  *
1963  * @param dev
1964  *   Pointer to Ethernet device structure.
1965  * @param[out] modinfo
1966  *   Storage for plug-in module EEPROM information.
1967  *
1968  * @return
1969  *   0 on success, a negative errno value otherwise and rte_errno is set.
1970  */
1971 int
1972 mlx5_get_module_info(struct rte_eth_dev *dev,
1973                      struct rte_eth_dev_module_info *modinfo)
1974 {
1975         struct ethtool_modinfo info = {
1976                 .cmd = ETHTOOL_GMODULEINFO,
1977         };
1978         struct ifreq ifr = (struct ifreq) {
1979                 .ifr_data = (void *)&info,
1980         };
1981         int ret = 0;
1982
1983         if (!dev || !modinfo) {
1984                 DRV_LOG(WARNING, "missing argument, cannot get module info");
1985                 rte_errno = EINVAL;
1986                 return -rte_errno;
1987         }
1988         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1989         if (ret) {
1990                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
1991                         dev->data->port_id, strerror(rte_errno));
1992                 return ret;
1993         }
1994         modinfo->type = info.type;
1995         modinfo->eeprom_len = info.eeprom_len;
1996         return ret;
1997 }
1998
1999 /**
2000  * DPDK callback to retrieve plug-in module EEPROM data.
2001  *
2002  * @param dev
2003  *   Pointer to Ethernet device structure.
2004  * @param[out] info
2005  *   Storage for plug-in module EEPROM data.
2006  *
2007  * @return
2008  *   0 on success, a negative errno value otherwise and rte_errno is set.
2009  */
2010 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
2011                            struct rte_dev_eeprom_info *info)
2012 {
2013         struct ethtool_eeprom *eeprom;
2014         struct ifreq ifr;
2015         int ret = 0;
2016
2017         if (!dev || !info) {
2018                 DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
2019                 rte_errno = EINVAL;
2020                 return -rte_errno;
2021         }
2022         eeprom = rte_calloc(__func__, 1,
2023                             (sizeof(struct ethtool_eeprom) + info->length), 0);
2024         if (!eeprom) {
2025                 DRV_LOG(WARNING, "port %u cannot allocate memory for "
2026                         "eeprom data", dev->data->port_id);
2027                 rte_errno = ENOMEM;
2028                 return -rte_errno;
2029         }
2030         eeprom->cmd = ETHTOOL_GMODULEEEPROM;
2031         eeprom->offset = info->offset;
2032         eeprom->len = info->length;
2033         ifr = (struct ifreq) {
2034                 .ifr_data = (void *)eeprom,
2035         };
2036         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2037         if (ret)
2038                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2039                         dev->data->port_id, strerror(rte_errno));
2040         else
2041                 rte_memcpy(info->data, eeprom->data, info->length);
2042         rte_free(eeprom);
2043         return ret;
2044 }
2045
2046 /**
2047  * DPDK callback to retrieve hairpin capabilities.
2048  *
2049  * @param dev
2050  *   Pointer to Ethernet device structure.
2051  * @param[out] cap
2052  *   Storage for hairpin capability data.
2053  *
2054  * @return
2055  *   0 on success, a negative errno value otherwise and rte_errno is set.
2056  */
2057 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
2058                          struct rte_eth_hairpin_cap *cap)
2059 {
2060         struct mlx5_priv *priv = dev->data->dev_private;
2061
2062         if (priv->sh->devx == 0) {
2063                 rte_errno = ENOTSUP;
2064                 return -rte_errno;
2065         }
2066         cap->max_nb_queues = UINT16_MAX;
2067         cap->max_rx_2_tx = 1;
2068         cap->max_tx_2_rx = 1;
2069         cap->max_nb_desc = 8192;
2070         return 0;
2071 }