1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
6 #include <rte_string_fns.h>
8 #include <rte_version.h>
10 #include <rte_kvargs.h>
12 #include "ena_ethdev.h"
14 #include "ena_platform.h"
16 #include "ena_eth_com.h"
18 #include <ena_common_defs.h>
19 #include <ena_regs_defs.h>
20 #include <ena_admin_defs.h>
21 #include <ena_eth_io_defs.h>
23 #define DRV_MODULE_VER_MAJOR 2
24 #define DRV_MODULE_VER_MINOR 4
25 #define DRV_MODULE_VER_SUBMINOR 0
27 #define __MERGE_64B_H_L(h, l) (((uint64_t)h << 32) | l)
29 #define GET_L4_HDR_LEN(mbuf) \
30 ((rte_pktmbuf_mtod_offset(mbuf, struct rte_tcp_hdr *, \
31 mbuf->l3_len + mbuf->l2_len)->data_off) >> 4)
33 #define ETH_GSTRING_LEN 32
35 #define ARRAY_SIZE(x) RTE_DIM(x)
37 #define ENA_MIN_RING_DESC 128
39 #define ENA_PTYPE_HAS_HASH (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP)
41 enum ethtool_stringset {
47 char name[ETH_GSTRING_LEN];
51 #define ENA_STAT_ENTRY(stat, stat_type) { \
53 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
56 #define ENA_STAT_RX_ENTRY(stat) \
57 ENA_STAT_ENTRY(stat, rx)
59 #define ENA_STAT_TX_ENTRY(stat) \
60 ENA_STAT_ENTRY(stat, tx)
62 #define ENA_STAT_ENI_ENTRY(stat) \
63 ENA_STAT_ENTRY(stat, eni)
65 #define ENA_STAT_GLOBAL_ENTRY(stat) \
66 ENA_STAT_ENTRY(stat, dev)
68 /* Device arguments */
69 #define ENA_DEVARG_LARGE_LLQ_HDR "large_llq_hdr"
72 * Each rte_memzone should have unique name.
73 * To satisfy it, count number of allocation and add it to name.
75 rte_atomic64_t ena_alloc_cnt;
77 static const struct ena_stats ena_stats_global_strings[] = {
78 ENA_STAT_GLOBAL_ENTRY(wd_expired),
79 ENA_STAT_GLOBAL_ENTRY(dev_start),
80 ENA_STAT_GLOBAL_ENTRY(dev_stop),
81 ENA_STAT_GLOBAL_ENTRY(tx_drops),
84 static const struct ena_stats ena_stats_eni_strings[] = {
85 ENA_STAT_ENI_ENTRY(bw_in_allowance_exceeded),
86 ENA_STAT_ENI_ENTRY(bw_out_allowance_exceeded),
87 ENA_STAT_ENI_ENTRY(pps_allowance_exceeded),
88 ENA_STAT_ENI_ENTRY(conntrack_allowance_exceeded),
89 ENA_STAT_ENI_ENTRY(linklocal_allowance_exceeded),
92 static const struct ena_stats ena_stats_tx_strings[] = {
93 ENA_STAT_TX_ENTRY(cnt),
94 ENA_STAT_TX_ENTRY(bytes),
95 ENA_STAT_TX_ENTRY(prepare_ctx_err),
96 ENA_STAT_TX_ENTRY(linearize),
97 ENA_STAT_TX_ENTRY(linearize_failed),
98 ENA_STAT_TX_ENTRY(tx_poll),
99 ENA_STAT_TX_ENTRY(doorbells),
100 ENA_STAT_TX_ENTRY(bad_req_id),
101 ENA_STAT_TX_ENTRY(available_desc),
104 static const struct ena_stats ena_stats_rx_strings[] = {
105 ENA_STAT_RX_ENTRY(cnt),
106 ENA_STAT_RX_ENTRY(bytes),
107 ENA_STAT_RX_ENTRY(refill_partial),
108 ENA_STAT_RX_ENTRY(bad_csum),
109 ENA_STAT_RX_ENTRY(mbuf_alloc_fail),
110 ENA_STAT_RX_ENTRY(bad_desc_num),
111 ENA_STAT_RX_ENTRY(bad_req_id),
114 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
115 #define ENA_STATS_ARRAY_ENI ARRAY_SIZE(ena_stats_eni_strings)
116 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
117 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
119 #define QUEUE_OFFLOADS (DEV_TX_OFFLOAD_TCP_CKSUM |\
120 DEV_TX_OFFLOAD_UDP_CKSUM |\
121 DEV_TX_OFFLOAD_IPV4_CKSUM |\
122 DEV_TX_OFFLOAD_TCP_TSO)
123 #define MBUF_OFFLOADS (PKT_TX_L4_MASK |\
127 /** Vendor ID used by Amazon devices */
128 #define PCI_VENDOR_ID_AMAZON 0x1D0F
129 /** Amazon devices */
130 #define PCI_DEVICE_ID_ENA_VF 0xEC20
131 #define PCI_DEVICE_ID_ENA_VF_RSERV0 0xEC21
133 #define ENA_TX_OFFLOAD_MASK (\
140 #define ENA_TX_OFFLOAD_NOTSUP_MASK \
141 (PKT_TX_OFFLOAD_MASK ^ ENA_TX_OFFLOAD_MASK)
143 /** HW specific offloads capabilities. */
144 /* IPv4 checksum offload. */
145 #define ENA_L3_IPV4_CSUM 0x0001
146 /* TCP/UDP checksum offload for IPv4 packets. */
147 #define ENA_L4_IPV4_CSUM 0x0002
148 /* TCP/UDP checksum offload for IPv4 packets with pseudo header checksum. */
149 #define ENA_L4_IPV4_CSUM_PARTIAL 0x0004
150 /* TCP/UDP checksum offload for IPv6 packets. */
151 #define ENA_L4_IPV6_CSUM 0x0008
152 /* TCP/UDP checksum offload for IPv6 packets with pseudo header checksum. */
153 #define ENA_L4_IPV6_CSUM_PARTIAL 0x0010
154 /* TSO support for IPv4 packets. */
155 #define ENA_IPV4_TSO 0x0020
157 /* Device supports setting RSS hash. */
158 #define ENA_RX_RSS_HASH 0x0040
160 static const struct rte_pci_id pci_id_ena_map[] = {
161 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF) },
162 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF_RSERV0) },
166 static struct ena_aenq_handlers aenq_handlers;
168 static int ena_device_init(struct ena_com_dev *ena_dev,
169 struct rte_pci_device *pdev,
170 struct ena_com_dev_get_features_ctx *get_feat_ctx,
172 static int ena_dev_configure(struct rte_eth_dev *dev);
173 static void ena_tx_map_mbuf(struct ena_ring *tx_ring,
174 struct ena_tx_buffer *tx_info,
175 struct rte_mbuf *mbuf,
177 uint16_t *header_len);
178 static int ena_xmit_mbuf(struct ena_ring *tx_ring, struct rte_mbuf *mbuf);
179 static void ena_tx_cleanup(struct ena_ring *tx_ring);
180 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
182 static uint16_t eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
184 static int ena_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
185 uint16_t nb_desc, unsigned int socket_id,
186 const struct rte_eth_txconf *tx_conf);
187 static int ena_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
188 uint16_t nb_desc, unsigned int socket_id,
189 const struct rte_eth_rxconf *rx_conf,
190 struct rte_mempool *mp);
191 static inline void ena_init_rx_mbuf(struct rte_mbuf *mbuf, uint16_t len);
192 static struct rte_mbuf *ena_rx_mbuf(struct ena_ring *rx_ring,
193 struct ena_com_rx_buf_info *ena_bufs,
195 uint16_t *next_to_clean,
197 static uint16_t eth_ena_recv_pkts(void *rx_queue,
198 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
199 static int ena_add_single_rx_desc(struct ena_com_io_sq *io_sq,
200 struct rte_mbuf *mbuf, uint16_t id);
201 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count);
202 static void ena_init_rings(struct ena_adapter *adapter,
203 bool disable_meta_caching);
204 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
205 static int ena_start(struct rte_eth_dev *dev);
206 static int ena_stop(struct rte_eth_dev *dev);
207 static int ena_close(struct rte_eth_dev *dev);
208 static int ena_dev_reset(struct rte_eth_dev *dev);
209 static int ena_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
210 static void ena_rx_queue_release_all(struct rte_eth_dev *dev);
211 static void ena_tx_queue_release_all(struct rte_eth_dev *dev);
212 static void ena_rx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
213 static void ena_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
214 static void ena_rx_queue_release_bufs(struct ena_ring *ring);
215 static void ena_tx_queue_release_bufs(struct ena_ring *ring);
216 static int ena_link_update(struct rte_eth_dev *dev,
217 int wait_to_complete);
218 static int ena_create_io_queue(struct rte_eth_dev *dev, struct ena_ring *ring);
219 static void ena_queue_stop(struct ena_ring *ring);
220 static void ena_queue_stop_all(struct rte_eth_dev *dev,
221 enum ena_ring_type ring_type);
222 static int ena_queue_start(struct rte_eth_dev *dev, struct ena_ring *ring);
223 static int ena_queue_start_all(struct rte_eth_dev *dev,
224 enum ena_ring_type ring_type);
225 static void ena_stats_restart(struct rte_eth_dev *dev);
226 static uint64_t ena_get_rx_port_offloads(struct ena_adapter *adapter);
227 static uint64_t ena_get_tx_port_offloads(struct ena_adapter *adapter);
228 static uint64_t ena_get_rx_queue_offloads(struct ena_adapter *adapter);
229 static uint64_t ena_get_tx_queue_offloads(struct ena_adapter *adapter);
230 static int ena_infos_get(struct rte_eth_dev *dev,
231 struct rte_eth_dev_info *dev_info);
232 static void ena_interrupt_handler_rte(void *cb_arg);
233 static void ena_timer_wd_callback(struct rte_timer *timer, void *arg);
234 static void ena_destroy_device(struct rte_eth_dev *eth_dev);
235 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev);
236 static int ena_xstats_get_names(struct rte_eth_dev *dev,
237 struct rte_eth_xstat_name *xstats_names,
239 static int ena_xstats_get(struct rte_eth_dev *dev,
240 struct rte_eth_xstat *stats,
242 static int ena_xstats_get_by_id(struct rte_eth_dev *dev,
246 static int ena_process_bool_devarg(const char *key,
249 static int ena_parse_devargs(struct ena_adapter *adapter,
250 struct rte_devargs *devargs);
251 static int ena_copy_eni_stats(struct ena_adapter *adapter);
252 static int ena_setup_rx_intr(struct rte_eth_dev *dev);
253 static int ena_rx_queue_intr_enable(struct rte_eth_dev *dev,
255 static int ena_rx_queue_intr_disable(struct rte_eth_dev *dev,
258 static const struct eth_dev_ops ena_dev_ops = {
259 .dev_configure = ena_dev_configure,
260 .dev_infos_get = ena_infos_get,
261 .rx_queue_setup = ena_rx_queue_setup,
262 .tx_queue_setup = ena_tx_queue_setup,
263 .dev_start = ena_start,
264 .dev_stop = ena_stop,
265 .link_update = ena_link_update,
266 .stats_get = ena_stats_get,
267 .xstats_get_names = ena_xstats_get_names,
268 .xstats_get = ena_xstats_get,
269 .xstats_get_by_id = ena_xstats_get_by_id,
270 .mtu_set = ena_mtu_set,
271 .rx_queue_release = ena_rx_queue_release,
272 .tx_queue_release = ena_tx_queue_release,
273 .dev_close = ena_close,
274 .dev_reset = ena_dev_reset,
275 .reta_update = ena_rss_reta_update,
276 .reta_query = ena_rss_reta_query,
277 .rx_queue_intr_enable = ena_rx_queue_intr_enable,
278 .rx_queue_intr_disable = ena_rx_queue_intr_disable,
279 .rss_hash_update = ena_rss_hash_update,
280 .rss_hash_conf_get = ena_rss_hash_conf_get,
283 static inline void ena_rx_mbuf_prepare(struct rte_mbuf *mbuf,
284 struct ena_com_rx_ctx *ena_rx_ctx,
287 uint64_t ol_flags = 0;
288 uint32_t packet_type = 0;
290 if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP)
291 packet_type |= RTE_PTYPE_L4_TCP;
292 else if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)
293 packet_type |= RTE_PTYPE_L4_UDP;
295 if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) {
296 packet_type |= RTE_PTYPE_L3_IPV4;
297 if (unlikely(ena_rx_ctx->l3_csum_err))
298 ol_flags |= PKT_RX_IP_CKSUM_BAD;
300 ol_flags |= PKT_RX_IP_CKSUM_GOOD;
301 } else if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV6) {
302 packet_type |= RTE_PTYPE_L3_IPV6;
305 if (!ena_rx_ctx->l4_csum_checked || ena_rx_ctx->frag)
306 ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN;
308 if (unlikely(ena_rx_ctx->l4_csum_err))
309 ol_flags |= PKT_RX_L4_CKSUM_BAD;
311 ol_flags |= PKT_RX_L4_CKSUM_GOOD;
314 likely((packet_type & ENA_PTYPE_HAS_HASH) && !ena_rx_ctx->frag)) {
315 ol_flags |= PKT_RX_RSS_HASH;
316 mbuf->hash.rss = ena_rx_ctx->hash;
319 mbuf->ol_flags = ol_flags;
320 mbuf->packet_type = packet_type;
323 static inline void ena_tx_mbuf_prepare(struct rte_mbuf *mbuf,
324 struct ena_com_tx_ctx *ena_tx_ctx,
325 uint64_t queue_offloads,
326 bool disable_meta_caching)
328 struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
330 if ((mbuf->ol_flags & MBUF_OFFLOADS) &&
331 (queue_offloads & QUEUE_OFFLOADS)) {
332 /* check if TSO is required */
333 if ((mbuf->ol_flags & PKT_TX_TCP_SEG) &&
334 (queue_offloads & DEV_TX_OFFLOAD_TCP_TSO)) {
335 ena_tx_ctx->tso_enable = true;
337 ena_meta->l4_hdr_len = GET_L4_HDR_LEN(mbuf);
340 /* check if L3 checksum is needed */
341 if ((mbuf->ol_flags & PKT_TX_IP_CKSUM) &&
342 (queue_offloads & DEV_TX_OFFLOAD_IPV4_CKSUM))
343 ena_tx_ctx->l3_csum_enable = true;
345 if (mbuf->ol_flags & PKT_TX_IPV6) {
346 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
348 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
350 /* set don't fragment (DF) flag */
351 if (mbuf->packet_type &
352 (RTE_PTYPE_L4_NONFRAG
353 | RTE_PTYPE_INNER_L4_NONFRAG))
354 ena_tx_ctx->df = true;
357 /* check if L4 checksum is needed */
358 if (((mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_TCP_CKSUM) &&
359 (queue_offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) {
360 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
361 ena_tx_ctx->l4_csum_enable = true;
362 } else if (((mbuf->ol_flags & PKT_TX_L4_MASK) ==
364 (queue_offloads & DEV_TX_OFFLOAD_UDP_CKSUM)) {
365 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
366 ena_tx_ctx->l4_csum_enable = true;
368 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
369 ena_tx_ctx->l4_csum_enable = false;
372 ena_meta->mss = mbuf->tso_segsz;
373 ena_meta->l3_hdr_len = mbuf->l3_len;
374 ena_meta->l3_hdr_offset = mbuf->l2_len;
376 ena_tx_ctx->meta_valid = true;
377 } else if (disable_meta_caching) {
378 memset(ena_meta, 0, sizeof(*ena_meta));
379 ena_tx_ctx->meta_valid = true;
381 ena_tx_ctx->meta_valid = false;
385 static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id)
387 struct ena_tx_buffer *tx_info = NULL;
389 if (likely(req_id < tx_ring->ring_size)) {
390 tx_info = &tx_ring->tx_buffer_info[req_id];
391 if (likely(tx_info->mbuf))
396 PMD_TX_LOG(ERR, "tx_info doesn't have valid mbuf\n");
398 PMD_TX_LOG(ERR, "Invalid req_id: %hu\n", req_id);
400 /* Trigger device reset */
401 ++tx_ring->tx_stats.bad_req_id;
402 tx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_TX_REQ_ID;
403 tx_ring->adapter->trigger_reset = true;
407 static void ena_config_host_info(struct ena_com_dev *ena_dev)
409 struct ena_admin_host_info *host_info;
412 /* Allocate only the host info */
413 rc = ena_com_allocate_host_info(ena_dev);
415 PMD_DRV_LOG(ERR, "Cannot allocate host info\n");
419 host_info = ena_dev->host_attr.host_info;
421 host_info->os_type = ENA_ADMIN_OS_DPDK;
422 host_info->kernel_ver = RTE_VERSION;
423 strlcpy((char *)host_info->kernel_ver_str, rte_version(),
424 sizeof(host_info->kernel_ver_str));
425 host_info->os_dist = RTE_VERSION;
426 strlcpy((char *)host_info->os_dist_str, rte_version(),
427 sizeof(host_info->os_dist_str));
428 host_info->driver_version =
429 (DRV_MODULE_VER_MAJOR) |
430 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
431 (DRV_MODULE_VER_SUBMINOR <<
432 ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
433 host_info->num_cpus = rte_lcore_count();
435 host_info->driver_supported_features =
436 ENA_ADMIN_HOST_INFO_RX_OFFSET_MASK |
437 ENA_ADMIN_HOST_INFO_RSS_CONFIGURABLE_FUNCTION_KEY_MASK;
439 rc = ena_com_set_host_attributes(ena_dev);
441 if (rc == -ENA_COM_UNSUPPORTED)
442 PMD_DRV_LOG(WARNING, "Cannot set host attributes\n");
444 PMD_DRV_LOG(ERR, "Cannot set host attributes\n");
452 ena_com_delete_host_info(ena_dev);
455 /* This function calculates the number of xstats based on the current config */
456 static unsigned int ena_xstats_calc_num(struct rte_eth_dev_data *data)
458 return ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENI +
459 (data->nb_tx_queues * ENA_STATS_ARRAY_TX) +
460 (data->nb_rx_queues * ENA_STATS_ARRAY_RX);
463 static void ena_config_debug_area(struct ena_adapter *adapter)
468 ss_count = ena_xstats_calc_num(adapter->edev_data);
470 /* allocate 32 bytes for each string and 64bit for the value */
471 debug_area_size = ss_count * ETH_GSTRING_LEN + sizeof(u64) * ss_count;
473 rc = ena_com_allocate_debug_area(&adapter->ena_dev, debug_area_size);
475 PMD_DRV_LOG(ERR, "Cannot allocate debug area\n");
479 rc = ena_com_set_host_attributes(&adapter->ena_dev);
481 if (rc == -ENA_COM_UNSUPPORTED)
482 PMD_DRV_LOG(WARNING, "Cannot set host attributes\n");
484 PMD_DRV_LOG(ERR, "Cannot set host attributes\n");
491 ena_com_delete_debug_area(&adapter->ena_dev);
494 static int ena_close(struct rte_eth_dev *dev)
496 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
497 struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
498 struct ena_adapter *adapter = dev->data->dev_private;
501 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
504 if (adapter->state == ENA_ADAPTER_STATE_RUNNING)
506 adapter->state = ENA_ADAPTER_STATE_CLOSED;
508 ena_rx_queue_release_all(dev);
509 ena_tx_queue_release_all(dev);
511 rte_free(adapter->drv_stats);
512 adapter->drv_stats = NULL;
514 rte_intr_disable(intr_handle);
515 rte_intr_callback_unregister(intr_handle,
516 ena_interrupt_handler_rte,
520 * MAC is not allocated dynamically. Setting NULL should prevent from
521 * release of the resource in the rte_eth_dev_release_port().
523 dev->data->mac_addrs = NULL;
529 ena_dev_reset(struct rte_eth_dev *dev)
533 /* Cannot release memory in secondary process */
534 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
535 PMD_DRV_LOG(WARNING, "dev_reset not supported in secondary.\n");
539 ena_destroy_device(dev);
540 rc = eth_ena_dev_init(dev);
542 PMD_INIT_LOG(CRIT, "Cannot initialize device\n");
547 static void ena_rx_queue_release_all(struct rte_eth_dev *dev)
549 int nb_queues = dev->data->nb_rx_queues;
552 for (i = 0; i < nb_queues; i++)
553 ena_rx_queue_release(dev, i);
556 static void ena_tx_queue_release_all(struct rte_eth_dev *dev)
558 int nb_queues = dev->data->nb_tx_queues;
561 for (i = 0; i < nb_queues; i++)
562 ena_tx_queue_release(dev, i);
565 static void ena_rx_queue_release(struct rte_eth_dev *dev, uint16_t qid)
567 struct ena_ring *ring = dev->data->rx_queues[qid];
569 /* Free ring resources */
570 if (ring->rx_buffer_info)
571 rte_free(ring->rx_buffer_info);
572 ring->rx_buffer_info = NULL;
574 if (ring->rx_refill_buffer)
575 rte_free(ring->rx_refill_buffer);
576 ring->rx_refill_buffer = NULL;
578 if (ring->empty_rx_reqs)
579 rte_free(ring->empty_rx_reqs);
580 ring->empty_rx_reqs = NULL;
582 ring->configured = 0;
584 PMD_DRV_LOG(NOTICE, "Rx queue %d:%d released\n",
585 ring->port_id, ring->id);
588 static void ena_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid)
590 struct ena_ring *ring = dev->data->tx_queues[qid];
592 /* Free ring resources */
593 if (ring->push_buf_intermediate_buf)
594 rte_free(ring->push_buf_intermediate_buf);
596 if (ring->tx_buffer_info)
597 rte_free(ring->tx_buffer_info);
599 if (ring->empty_tx_reqs)
600 rte_free(ring->empty_tx_reqs);
602 ring->empty_tx_reqs = NULL;
603 ring->tx_buffer_info = NULL;
604 ring->push_buf_intermediate_buf = NULL;
606 ring->configured = 0;
608 PMD_DRV_LOG(NOTICE, "Tx queue %d:%d released\n",
609 ring->port_id, ring->id);
612 static void ena_rx_queue_release_bufs(struct ena_ring *ring)
616 for (i = 0; i < ring->ring_size; ++i) {
617 struct ena_rx_buffer *rx_info = &ring->rx_buffer_info[i];
619 rte_mbuf_raw_free(rx_info->mbuf);
620 rx_info->mbuf = NULL;
625 static void ena_tx_queue_release_bufs(struct ena_ring *ring)
629 for (i = 0; i < ring->ring_size; ++i) {
630 struct ena_tx_buffer *tx_buf = &ring->tx_buffer_info[i];
633 rte_pktmbuf_free(tx_buf->mbuf);
639 static int ena_link_update(struct rte_eth_dev *dev,
640 __rte_unused int wait_to_complete)
642 struct rte_eth_link *link = &dev->data->dev_link;
643 struct ena_adapter *adapter = dev->data->dev_private;
645 link->link_status = adapter->link_status ? ETH_LINK_UP : ETH_LINK_DOWN;
646 link->link_speed = ETH_SPEED_NUM_NONE;
647 link->link_duplex = ETH_LINK_FULL_DUPLEX;
652 static int ena_queue_start_all(struct rte_eth_dev *dev,
653 enum ena_ring_type ring_type)
655 struct ena_adapter *adapter = dev->data->dev_private;
656 struct ena_ring *queues = NULL;
661 if (ring_type == ENA_RING_TYPE_RX) {
662 queues = adapter->rx_ring;
663 nb_queues = dev->data->nb_rx_queues;
665 queues = adapter->tx_ring;
666 nb_queues = dev->data->nb_tx_queues;
668 for (i = 0; i < nb_queues; i++) {
669 if (queues[i].configured) {
670 if (ring_type == ENA_RING_TYPE_RX) {
672 dev->data->rx_queues[i] == &queues[i],
673 "Inconsistent state of Rx queues\n");
676 dev->data->tx_queues[i] == &queues[i],
677 "Inconsistent state of Tx queues\n");
680 rc = ena_queue_start(dev, &queues[i]);
684 "Failed to start queue[%d] of type(%d)\n",
695 if (queues[i].configured)
696 ena_queue_stop(&queues[i]);
701 static int ena_check_valid_conf(struct ena_adapter *adapter)
703 uint32_t mtu = adapter->edev_data->mtu;
705 if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
707 "Unsupported MTU of %d. Max MTU: %d, min MTU: %d\n",
708 mtu, adapter->max_mtu, ENA_MIN_MTU);
709 return ENA_COM_UNSUPPORTED;
716 ena_calc_io_queue_size(struct ena_calc_queue_size_ctx *ctx,
717 bool use_large_llq_hdr)
719 struct ena_admin_feature_llq_desc *llq = &ctx->get_feat_ctx->llq;
720 struct ena_com_dev *ena_dev = ctx->ena_dev;
721 uint32_t max_tx_queue_size;
722 uint32_t max_rx_queue_size;
724 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
725 struct ena_admin_queue_ext_feature_fields *max_queue_ext =
726 &ctx->get_feat_ctx->max_queue_ext.max_queue_ext;
727 max_rx_queue_size = RTE_MIN(max_queue_ext->max_rx_cq_depth,
728 max_queue_ext->max_rx_sq_depth);
729 max_tx_queue_size = max_queue_ext->max_tx_cq_depth;
731 if (ena_dev->tx_mem_queue_type ==
732 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
733 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
736 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
737 max_queue_ext->max_tx_sq_depth);
740 ctx->max_rx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
741 max_queue_ext->max_per_packet_rx_descs);
742 ctx->max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
743 max_queue_ext->max_per_packet_tx_descs);
745 struct ena_admin_queue_feature_desc *max_queues =
746 &ctx->get_feat_ctx->max_queues;
747 max_rx_queue_size = RTE_MIN(max_queues->max_cq_depth,
748 max_queues->max_sq_depth);
749 max_tx_queue_size = max_queues->max_cq_depth;
751 if (ena_dev->tx_mem_queue_type ==
752 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
753 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
756 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
757 max_queues->max_sq_depth);
760 ctx->max_rx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
761 max_queues->max_packet_rx_descs);
762 ctx->max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
763 max_queues->max_packet_tx_descs);
766 /* Round down to the nearest power of 2 */
767 max_rx_queue_size = rte_align32prevpow2(max_rx_queue_size);
768 max_tx_queue_size = rte_align32prevpow2(max_tx_queue_size);
770 if (use_large_llq_hdr) {
771 if ((llq->entry_size_ctrl_supported &
772 ENA_ADMIN_LIST_ENTRY_SIZE_256B) &&
773 (ena_dev->tx_mem_queue_type ==
774 ENA_ADMIN_PLACEMENT_POLICY_DEV)) {
775 max_tx_queue_size /= 2;
777 "Forcing large headers and decreasing maximum Tx queue size to %d\n",
781 "Forcing large headers failed: LLQ is disabled or device does not support large headers\n");
785 if (unlikely(max_rx_queue_size == 0 || max_tx_queue_size == 0)) {
786 PMD_INIT_LOG(ERR, "Invalid queue size\n");
790 ctx->max_tx_queue_size = max_tx_queue_size;
791 ctx->max_rx_queue_size = max_rx_queue_size;
796 static void ena_stats_restart(struct rte_eth_dev *dev)
798 struct ena_adapter *adapter = dev->data->dev_private;
800 rte_atomic64_init(&adapter->drv_stats->ierrors);
801 rte_atomic64_init(&adapter->drv_stats->oerrors);
802 rte_atomic64_init(&adapter->drv_stats->rx_nombuf);
803 adapter->drv_stats->rx_drops = 0;
806 static int ena_stats_get(struct rte_eth_dev *dev,
807 struct rte_eth_stats *stats)
809 struct ena_admin_basic_stats ena_stats;
810 struct ena_adapter *adapter = dev->data->dev_private;
811 struct ena_com_dev *ena_dev = &adapter->ena_dev;
816 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
819 memset(&ena_stats, 0, sizeof(ena_stats));
821 rte_spinlock_lock(&adapter->admin_lock);
822 rc = ena_com_get_dev_basic_stats(ena_dev, &ena_stats);
823 rte_spinlock_unlock(&adapter->admin_lock);
825 PMD_DRV_LOG(ERR, "Could not retrieve statistics from ENA\n");
829 /* Set of basic statistics from ENA */
830 stats->ipackets = __MERGE_64B_H_L(ena_stats.rx_pkts_high,
831 ena_stats.rx_pkts_low);
832 stats->opackets = __MERGE_64B_H_L(ena_stats.tx_pkts_high,
833 ena_stats.tx_pkts_low);
834 stats->ibytes = __MERGE_64B_H_L(ena_stats.rx_bytes_high,
835 ena_stats.rx_bytes_low);
836 stats->obytes = __MERGE_64B_H_L(ena_stats.tx_bytes_high,
837 ena_stats.tx_bytes_low);
839 /* Driver related stats */
840 stats->imissed = adapter->drv_stats->rx_drops;
841 stats->ierrors = rte_atomic64_read(&adapter->drv_stats->ierrors);
842 stats->oerrors = rte_atomic64_read(&adapter->drv_stats->oerrors);
843 stats->rx_nombuf = rte_atomic64_read(&adapter->drv_stats->rx_nombuf);
845 max_rings_stats = RTE_MIN(dev->data->nb_rx_queues,
846 RTE_ETHDEV_QUEUE_STAT_CNTRS);
847 for (i = 0; i < max_rings_stats; ++i) {
848 struct ena_stats_rx *rx_stats = &adapter->rx_ring[i].rx_stats;
850 stats->q_ibytes[i] = rx_stats->bytes;
851 stats->q_ipackets[i] = rx_stats->cnt;
852 stats->q_errors[i] = rx_stats->bad_desc_num +
853 rx_stats->bad_req_id;
856 max_rings_stats = RTE_MIN(dev->data->nb_tx_queues,
857 RTE_ETHDEV_QUEUE_STAT_CNTRS);
858 for (i = 0; i < max_rings_stats; ++i) {
859 struct ena_stats_tx *tx_stats = &adapter->tx_ring[i].tx_stats;
861 stats->q_obytes[i] = tx_stats->bytes;
862 stats->q_opackets[i] = tx_stats->cnt;
868 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
870 struct ena_adapter *adapter;
871 struct ena_com_dev *ena_dev;
874 ena_assert_msg(dev->data != NULL, "Uninitialized device\n");
875 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device\n");
876 adapter = dev->data->dev_private;
878 ena_dev = &adapter->ena_dev;
879 ena_assert_msg(ena_dev != NULL, "Uninitialized device\n");
881 if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
883 "Invalid MTU setting. New MTU: %d, max MTU: %d, min MTU: %d\n",
884 mtu, adapter->max_mtu, ENA_MIN_MTU);
888 rc = ena_com_set_dev_mtu(ena_dev, mtu);
890 PMD_DRV_LOG(ERR, "Could not set MTU: %d\n", mtu);
892 PMD_DRV_LOG(NOTICE, "MTU set to: %d\n", mtu);
897 static int ena_start(struct rte_eth_dev *dev)
899 struct ena_adapter *adapter = dev->data->dev_private;
903 /* Cannot allocate memory in secondary process */
904 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
905 PMD_DRV_LOG(WARNING, "dev_start not supported in secondary.\n");
909 rc = ena_check_valid_conf(adapter);
913 rc = ena_setup_rx_intr(dev);
917 rc = ena_queue_start_all(dev, ENA_RING_TYPE_RX);
921 rc = ena_queue_start_all(dev, ENA_RING_TYPE_TX);
925 if (adapter->edev_data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
926 rc = ena_rss_configure(adapter);
931 ena_stats_restart(dev);
933 adapter->timestamp_wd = rte_get_timer_cycles();
934 adapter->keep_alive_timeout = ENA_DEVICE_KALIVE_TIMEOUT;
936 ticks = rte_get_timer_hz();
937 rte_timer_reset(&adapter->timer_wd, ticks, PERIODICAL, rte_lcore_id(),
938 ena_timer_wd_callback, dev);
940 ++adapter->dev_stats.dev_start;
941 adapter->state = ENA_ADAPTER_STATE_RUNNING;
946 ena_queue_stop_all(dev, ENA_RING_TYPE_TX);
948 ena_queue_stop_all(dev, ENA_RING_TYPE_RX);
952 static int ena_stop(struct rte_eth_dev *dev)
954 struct ena_adapter *adapter = dev->data->dev_private;
955 struct ena_com_dev *ena_dev = &adapter->ena_dev;
956 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
957 struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
960 /* Cannot free memory in secondary process */
961 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
962 PMD_DRV_LOG(WARNING, "dev_stop not supported in secondary.\n");
966 rte_timer_stop_sync(&adapter->timer_wd);
967 ena_queue_stop_all(dev, ENA_RING_TYPE_TX);
968 ena_queue_stop_all(dev, ENA_RING_TYPE_RX);
970 if (adapter->trigger_reset) {
971 rc = ena_com_dev_reset(ena_dev, adapter->reset_reason);
973 PMD_DRV_LOG(ERR, "Device reset failed, rc: %d\n", rc);
976 rte_intr_disable(intr_handle);
978 rte_intr_efd_disable(intr_handle);
979 if (intr_handle->intr_vec != NULL) {
980 rte_free(intr_handle->intr_vec);
981 intr_handle->intr_vec = NULL;
984 rte_intr_enable(intr_handle);
986 ++adapter->dev_stats.dev_stop;
987 adapter->state = ENA_ADAPTER_STATE_STOPPED;
988 dev->data->dev_started = 0;
993 static int ena_create_io_queue(struct rte_eth_dev *dev, struct ena_ring *ring)
995 struct ena_adapter *adapter = ring->adapter;
996 struct ena_com_dev *ena_dev = &adapter->ena_dev;
997 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
998 struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
999 struct ena_com_create_io_ctx ctx =
1000 /* policy set to _HOST just to satisfy icc compiler */
1001 { ENA_ADMIN_PLACEMENT_POLICY_HOST,
1007 ctx.msix_vector = -1;
1008 if (ring->type == ENA_RING_TYPE_TX) {
1009 ena_qid = ENA_IO_TXQ_IDX(ring->id);
1010 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
1011 ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
1012 for (i = 0; i < ring->ring_size; i++)
1013 ring->empty_tx_reqs[i] = i;
1015 ena_qid = ENA_IO_RXQ_IDX(ring->id);
1016 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
1017 if (rte_intr_dp_is_en(intr_handle))
1018 ctx.msix_vector = intr_handle->intr_vec[ring->id];
1019 for (i = 0; i < ring->ring_size; i++)
1020 ring->empty_rx_reqs[i] = i;
1022 ctx.queue_size = ring->ring_size;
1024 ctx.numa_node = ring->numa_socket_id;
1026 rc = ena_com_create_io_queue(ena_dev, &ctx);
1029 "Failed to create IO queue[%d] (qid:%d), rc: %d\n",
1030 ring->id, ena_qid, rc);
1034 rc = ena_com_get_io_handlers(ena_dev, ena_qid,
1035 &ring->ena_com_io_sq,
1036 &ring->ena_com_io_cq);
1039 "Failed to get IO queue[%d] handlers, rc: %d\n",
1041 ena_com_destroy_io_queue(ena_dev, ena_qid);
1045 if (ring->type == ENA_RING_TYPE_TX)
1046 ena_com_update_numa_node(ring->ena_com_io_cq, ctx.numa_node);
1048 /* Start with Rx interrupts being masked. */
1049 if (ring->type == ENA_RING_TYPE_RX && rte_intr_dp_is_en(intr_handle))
1050 ena_rx_queue_intr_disable(dev, ring->id);
1055 static void ena_queue_stop(struct ena_ring *ring)
1057 struct ena_com_dev *ena_dev = &ring->adapter->ena_dev;
1059 if (ring->type == ENA_RING_TYPE_RX) {
1060 ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(ring->id));
1061 ena_rx_queue_release_bufs(ring);
1063 ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(ring->id));
1064 ena_tx_queue_release_bufs(ring);
1068 static void ena_queue_stop_all(struct rte_eth_dev *dev,
1069 enum ena_ring_type ring_type)
1071 struct ena_adapter *adapter = dev->data->dev_private;
1072 struct ena_ring *queues = NULL;
1073 uint16_t nb_queues, i;
1075 if (ring_type == ENA_RING_TYPE_RX) {
1076 queues = adapter->rx_ring;
1077 nb_queues = dev->data->nb_rx_queues;
1079 queues = adapter->tx_ring;
1080 nb_queues = dev->data->nb_tx_queues;
1083 for (i = 0; i < nb_queues; ++i)
1084 if (queues[i].configured)
1085 ena_queue_stop(&queues[i]);
1088 static int ena_queue_start(struct rte_eth_dev *dev, struct ena_ring *ring)
1092 ena_assert_msg(ring->configured == 1,
1093 "Trying to start unconfigured queue\n");
1095 rc = ena_create_io_queue(dev, ring);
1097 PMD_INIT_LOG(ERR, "Failed to create IO queue\n");
1101 ring->next_to_clean = 0;
1102 ring->next_to_use = 0;
1104 if (ring->type == ENA_RING_TYPE_TX) {
1105 ring->tx_stats.available_desc =
1106 ena_com_free_q_entries(ring->ena_com_io_sq);
1110 bufs_num = ring->ring_size - 1;
1111 rc = ena_populate_rx_queue(ring, bufs_num);
1112 if (rc != bufs_num) {
1113 ena_com_destroy_io_queue(&ring->adapter->ena_dev,
1114 ENA_IO_RXQ_IDX(ring->id));
1115 PMD_INIT_LOG(ERR, "Failed to populate Rx ring\n");
1116 return ENA_COM_FAULT;
1118 /* Flush per-core RX buffers pools cache as they can be used on other
1121 rte_mempool_cache_flush(NULL, ring->mb_pool);
1126 static int ena_tx_queue_setup(struct rte_eth_dev *dev,
1129 unsigned int socket_id,
1130 const struct rte_eth_txconf *tx_conf)
1132 struct ena_ring *txq = NULL;
1133 struct ena_adapter *adapter = dev->data->dev_private;
1135 uint16_t dyn_thresh;
1137 txq = &adapter->tx_ring[queue_idx];
1139 if (txq->configured) {
1141 "API violation. Queue[%d] is already configured\n",
1143 return ENA_COM_FAULT;
1146 if (!rte_is_power_of_2(nb_desc)) {
1148 "Unsupported size of Tx queue: %d is not a power of 2.\n",
1153 if (nb_desc > adapter->max_tx_ring_size) {
1155 "Unsupported size of Tx queue (max size: %d)\n",
1156 adapter->max_tx_ring_size);
1160 txq->port_id = dev->data->port_id;
1161 txq->next_to_clean = 0;
1162 txq->next_to_use = 0;
1163 txq->ring_size = nb_desc;
1164 txq->size_mask = nb_desc - 1;
1165 txq->numa_socket_id = socket_id;
1166 txq->pkts_without_db = false;
1168 txq->tx_buffer_info = rte_zmalloc("txq->tx_buffer_info",
1169 sizeof(struct ena_tx_buffer) *
1171 RTE_CACHE_LINE_SIZE);
1172 if (!txq->tx_buffer_info) {
1174 "Failed to allocate memory for Tx buffer info\n");
1178 txq->empty_tx_reqs = rte_zmalloc("txq->empty_tx_reqs",
1179 sizeof(u16) * txq->ring_size,
1180 RTE_CACHE_LINE_SIZE);
1181 if (!txq->empty_tx_reqs) {
1183 "Failed to allocate memory for empty Tx requests\n");
1184 rte_free(txq->tx_buffer_info);
1188 txq->push_buf_intermediate_buf =
1189 rte_zmalloc("txq->push_buf_intermediate_buf",
1190 txq->tx_max_header_size,
1191 RTE_CACHE_LINE_SIZE);
1192 if (!txq->push_buf_intermediate_buf) {
1193 PMD_DRV_LOG(ERR, "Failed to alloc push buffer for LLQ\n");
1194 rte_free(txq->tx_buffer_info);
1195 rte_free(txq->empty_tx_reqs);
1199 for (i = 0; i < txq->ring_size; i++)
1200 txq->empty_tx_reqs[i] = i;
1202 txq->offloads = tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
1204 /* Check if caller provided the Tx cleanup threshold value. */
1205 if (tx_conf->tx_free_thresh != 0) {
1206 txq->tx_free_thresh = tx_conf->tx_free_thresh;
1208 dyn_thresh = txq->ring_size -
1209 txq->ring_size / ENA_REFILL_THRESH_DIVIDER;
1210 txq->tx_free_thresh = RTE_MAX(dyn_thresh,
1211 txq->ring_size - ENA_REFILL_THRESH_PACKET);
1214 /* Store pointer to this queue in upper layer */
1215 txq->configured = 1;
1216 dev->data->tx_queues[queue_idx] = txq;
1221 static int ena_rx_queue_setup(struct rte_eth_dev *dev,
1224 unsigned int socket_id,
1225 const struct rte_eth_rxconf *rx_conf,
1226 struct rte_mempool *mp)
1228 struct ena_adapter *adapter = dev->data->dev_private;
1229 struct ena_ring *rxq = NULL;
1232 uint16_t dyn_thresh;
1234 rxq = &adapter->rx_ring[queue_idx];
1235 if (rxq->configured) {
1237 "API violation. Queue[%d] is already configured\n",
1239 return ENA_COM_FAULT;
1242 if (!rte_is_power_of_2(nb_desc)) {
1244 "Unsupported size of Rx queue: %d is not a power of 2.\n",
1249 if (nb_desc > adapter->max_rx_ring_size) {
1251 "Unsupported size of Rx queue (max size: %d)\n",
1252 adapter->max_rx_ring_size);
1256 /* ENA isn't supporting buffers smaller than 1400 bytes */
1257 buffer_size = rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM;
1258 if (buffer_size < ENA_RX_BUF_MIN_SIZE) {
1260 "Unsupported size of Rx buffer: %zu (min size: %d)\n",
1261 buffer_size, ENA_RX_BUF_MIN_SIZE);
1265 rxq->port_id = dev->data->port_id;
1266 rxq->next_to_clean = 0;
1267 rxq->next_to_use = 0;
1268 rxq->ring_size = nb_desc;
1269 rxq->size_mask = nb_desc - 1;
1270 rxq->numa_socket_id = socket_id;
1273 rxq->rx_buffer_info = rte_zmalloc("rxq->buffer_info",
1274 sizeof(struct ena_rx_buffer) * nb_desc,
1275 RTE_CACHE_LINE_SIZE);
1276 if (!rxq->rx_buffer_info) {
1278 "Failed to allocate memory for Rx buffer info\n");
1282 rxq->rx_refill_buffer = rte_zmalloc("rxq->rx_refill_buffer",
1283 sizeof(struct rte_mbuf *) * nb_desc,
1284 RTE_CACHE_LINE_SIZE);
1286 if (!rxq->rx_refill_buffer) {
1288 "Failed to allocate memory for Rx refill buffer\n");
1289 rte_free(rxq->rx_buffer_info);
1290 rxq->rx_buffer_info = NULL;
1294 rxq->empty_rx_reqs = rte_zmalloc("rxq->empty_rx_reqs",
1295 sizeof(uint16_t) * nb_desc,
1296 RTE_CACHE_LINE_SIZE);
1297 if (!rxq->empty_rx_reqs) {
1299 "Failed to allocate memory for empty Rx requests\n");
1300 rte_free(rxq->rx_buffer_info);
1301 rxq->rx_buffer_info = NULL;
1302 rte_free(rxq->rx_refill_buffer);
1303 rxq->rx_refill_buffer = NULL;
1307 for (i = 0; i < nb_desc; i++)
1308 rxq->empty_rx_reqs[i] = i;
1310 rxq->offloads = rx_conf->offloads | dev->data->dev_conf.rxmode.offloads;
1312 if (rx_conf->rx_free_thresh != 0) {
1313 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
1315 dyn_thresh = rxq->ring_size / ENA_REFILL_THRESH_DIVIDER;
1316 rxq->rx_free_thresh = RTE_MIN(dyn_thresh,
1317 (uint16_t)(ENA_REFILL_THRESH_PACKET));
1320 /* Store pointer to this queue in upper layer */
1321 rxq->configured = 1;
1322 dev->data->rx_queues[queue_idx] = rxq;
1327 static int ena_add_single_rx_desc(struct ena_com_io_sq *io_sq,
1328 struct rte_mbuf *mbuf, uint16_t id)
1330 struct ena_com_buf ebuf;
1333 /* prepare physical address for DMA transaction */
1334 ebuf.paddr = mbuf->buf_iova + RTE_PKTMBUF_HEADROOM;
1335 ebuf.len = mbuf->buf_len - RTE_PKTMBUF_HEADROOM;
1337 /* pass resource to device */
1338 rc = ena_com_add_single_rx_desc(io_sq, &ebuf, id);
1339 if (unlikely(rc != 0))
1340 PMD_RX_LOG(WARNING, "Failed adding Rx desc\n");
1345 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count)
1349 uint16_t next_to_use = rxq->next_to_use;
1351 #ifdef RTE_ETHDEV_DEBUG_RX
1354 struct rte_mbuf **mbufs = rxq->rx_refill_buffer;
1356 if (unlikely(!count))
1359 #ifdef RTE_ETHDEV_DEBUG_RX
1360 in_use = rxq->ring_size - 1 -
1361 ena_com_free_q_entries(rxq->ena_com_io_sq);
1362 if (unlikely((in_use + count) >= rxq->ring_size))
1363 PMD_RX_LOG(ERR, "Bad Rx ring state\n");
1366 /* get resources for incoming packets */
1367 rc = rte_pktmbuf_alloc_bulk(rxq->mb_pool, mbufs, count);
1368 if (unlikely(rc < 0)) {
1369 rte_atomic64_inc(&rxq->adapter->drv_stats->rx_nombuf);
1370 ++rxq->rx_stats.mbuf_alloc_fail;
1371 PMD_RX_LOG(DEBUG, "There are not enough free buffers\n");
1375 for (i = 0; i < count; i++) {
1376 struct rte_mbuf *mbuf = mbufs[i];
1377 struct ena_rx_buffer *rx_info;
1379 if (likely((i + 4) < count))
1380 rte_prefetch0(mbufs[i + 4]);
1382 req_id = rxq->empty_rx_reqs[next_to_use];
1383 rx_info = &rxq->rx_buffer_info[req_id];
1385 rc = ena_add_single_rx_desc(rxq->ena_com_io_sq, mbuf, req_id);
1386 if (unlikely(rc != 0))
1389 rx_info->mbuf = mbuf;
1390 next_to_use = ENA_IDX_NEXT_MASKED(next_to_use, rxq->size_mask);
1393 if (unlikely(i < count)) {
1395 "Refilled Rx queue[%d] with only %d/%d buffers\n",
1397 rte_pktmbuf_free_bulk(&mbufs[i], count - i);
1398 ++rxq->rx_stats.refill_partial;
1401 /* When we submitted free recources to device... */
1402 if (likely(i > 0)) {
1403 /* ...let HW know that it can fill buffers with data. */
1404 ena_com_write_sq_doorbell(rxq->ena_com_io_sq);
1406 rxq->next_to_use = next_to_use;
1412 static int ena_device_init(struct ena_com_dev *ena_dev,
1413 struct rte_pci_device *pdev,
1414 struct ena_com_dev_get_features_ctx *get_feat_ctx,
1417 uint32_t aenq_groups;
1419 bool readless_supported;
1421 /* Initialize mmio registers */
1422 rc = ena_com_mmio_reg_read_request_init(ena_dev);
1424 PMD_DRV_LOG(ERR, "Failed to init MMIO read less\n");
1428 /* The PCIe configuration space revision id indicate if mmio reg
1431 readless_supported = !(pdev->id.class_id & ENA_MMIO_DISABLE_REG_READ);
1432 ena_com_set_mmio_read_mode(ena_dev, readless_supported);
1435 rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL);
1437 PMD_DRV_LOG(ERR, "Cannot reset device\n");
1438 goto err_mmio_read_less;
1441 /* check FW version */
1442 rc = ena_com_validate_version(ena_dev);
1444 PMD_DRV_LOG(ERR, "Device version is too low\n");
1445 goto err_mmio_read_less;
1448 ena_dev->dma_addr_bits = ena_com_get_dma_width(ena_dev);
1450 /* ENA device administration layer init */
1451 rc = ena_com_admin_init(ena_dev, &aenq_handlers);
1454 "Cannot initialize ENA admin queue\n");
1455 goto err_mmio_read_less;
1458 /* To enable the msix interrupts the driver needs to know the number
1459 * of queues. So the driver uses polling mode to retrieve this
1462 ena_com_set_admin_polling_mode(ena_dev, true);
1464 ena_config_host_info(ena_dev);
1466 /* Get Device Attributes and features */
1467 rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
1470 "Cannot get attribute for ENA device, rc: %d\n", rc);
1471 goto err_admin_init;
1474 aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
1475 BIT(ENA_ADMIN_NOTIFICATION) |
1476 BIT(ENA_ADMIN_KEEP_ALIVE) |
1477 BIT(ENA_ADMIN_FATAL_ERROR) |
1478 BIT(ENA_ADMIN_WARNING);
1480 aenq_groups &= get_feat_ctx->aenq.supported_groups;
1481 rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
1483 PMD_DRV_LOG(ERR, "Cannot configure AENQ groups, rc: %d\n", rc);
1484 goto err_admin_init;
1487 *wd_state = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
1492 ena_com_admin_destroy(ena_dev);
1495 ena_com_mmio_reg_read_request_destroy(ena_dev);
1500 static void ena_interrupt_handler_rte(void *cb_arg)
1502 struct rte_eth_dev *dev = cb_arg;
1503 struct ena_adapter *adapter = dev->data->dev_private;
1504 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1506 ena_com_admin_q_comp_intr_handler(ena_dev);
1507 if (likely(adapter->state != ENA_ADAPTER_STATE_CLOSED))
1508 ena_com_aenq_intr_handler(ena_dev, dev);
1511 static void check_for_missing_keep_alive(struct ena_adapter *adapter)
1513 if (!adapter->wd_state)
1516 if (adapter->keep_alive_timeout == ENA_HW_HINTS_NO_TIMEOUT)
1519 if (unlikely((rte_get_timer_cycles() - adapter->timestamp_wd) >=
1520 adapter->keep_alive_timeout)) {
1521 PMD_DRV_LOG(ERR, "Keep alive timeout\n");
1522 adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO;
1523 adapter->trigger_reset = true;
1524 ++adapter->dev_stats.wd_expired;
1528 /* Check if admin queue is enabled */
1529 static void check_for_admin_com_state(struct ena_adapter *adapter)
1531 if (unlikely(!ena_com_get_admin_running_state(&adapter->ena_dev))) {
1532 PMD_DRV_LOG(ERR, "ENA admin queue is not in running state\n");
1533 adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO;
1534 adapter->trigger_reset = true;
1538 static void ena_timer_wd_callback(__rte_unused struct rte_timer *timer,
1541 struct rte_eth_dev *dev = arg;
1542 struct ena_adapter *adapter = dev->data->dev_private;
1544 check_for_missing_keep_alive(adapter);
1545 check_for_admin_com_state(adapter);
1547 if (unlikely(adapter->trigger_reset)) {
1548 PMD_DRV_LOG(ERR, "Trigger reset is on\n");
1549 rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
1555 set_default_llq_configurations(struct ena_llq_configurations *llq_config,
1556 struct ena_admin_feature_llq_desc *llq,
1557 bool use_large_llq_hdr)
1559 llq_config->llq_header_location = ENA_ADMIN_INLINE_HEADER;
1560 llq_config->llq_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY;
1561 llq_config->llq_num_decs_before_header =
1562 ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2;
1564 if (use_large_llq_hdr &&
1565 (llq->entry_size_ctrl_supported & ENA_ADMIN_LIST_ENTRY_SIZE_256B)) {
1566 llq_config->llq_ring_entry_size =
1567 ENA_ADMIN_LIST_ENTRY_SIZE_256B;
1568 llq_config->llq_ring_entry_size_value = 256;
1570 llq_config->llq_ring_entry_size =
1571 ENA_ADMIN_LIST_ENTRY_SIZE_128B;
1572 llq_config->llq_ring_entry_size_value = 128;
1577 ena_set_queues_placement_policy(struct ena_adapter *adapter,
1578 struct ena_com_dev *ena_dev,
1579 struct ena_admin_feature_llq_desc *llq,
1580 struct ena_llq_configurations *llq_default_configurations)
1583 u32 llq_feature_mask;
1585 llq_feature_mask = 1 << ENA_ADMIN_LLQ;
1586 if (!(ena_dev->supported_features & llq_feature_mask)) {
1588 "LLQ is not supported. Fallback to host mode policy.\n");
1589 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1593 rc = ena_com_config_dev_mode(ena_dev, llq, llq_default_configurations);
1595 PMD_INIT_LOG(WARNING,
1596 "Failed to config dev mode. Fallback to host mode policy.\n");
1597 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1601 /* Nothing to config, exit */
1602 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
1605 if (!adapter->dev_mem_base) {
1607 "Unable to access LLQ BAR resource. Fallback to host mode policy.\n");
1608 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1612 ena_dev->mem_bar = adapter->dev_mem_base;
1617 static uint32_t ena_calc_max_io_queue_num(struct ena_com_dev *ena_dev,
1618 struct ena_com_dev_get_features_ctx *get_feat_ctx)
1620 uint32_t io_tx_sq_num, io_tx_cq_num, io_rx_num, max_num_io_queues;
1622 /* Regular queues capabilities */
1623 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
1624 struct ena_admin_queue_ext_feature_fields *max_queue_ext =
1625 &get_feat_ctx->max_queue_ext.max_queue_ext;
1626 io_rx_num = RTE_MIN(max_queue_ext->max_rx_sq_num,
1627 max_queue_ext->max_rx_cq_num);
1628 io_tx_sq_num = max_queue_ext->max_tx_sq_num;
1629 io_tx_cq_num = max_queue_ext->max_tx_cq_num;
1631 struct ena_admin_queue_feature_desc *max_queues =
1632 &get_feat_ctx->max_queues;
1633 io_tx_sq_num = max_queues->max_sq_num;
1634 io_tx_cq_num = max_queues->max_cq_num;
1635 io_rx_num = RTE_MIN(io_tx_sq_num, io_tx_cq_num);
1638 /* In case of LLQ use the llq number in the get feature cmd */
1639 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
1640 io_tx_sq_num = get_feat_ctx->llq.max_llq_num;
1642 max_num_io_queues = RTE_MIN(ENA_MAX_NUM_IO_QUEUES, io_rx_num);
1643 max_num_io_queues = RTE_MIN(max_num_io_queues, io_tx_sq_num);
1644 max_num_io_queues = RTE_MIN(max_num_io_queues, io_tx_cq_num);
1646 if (unlikely(max_num_io_queues == 0)) {
1647 PMD_DRV_LOG(ERR, "Number of IO queues cannot not be 0\n");
1651 return max_num_io_queues;
1655 ena_set_offloads(struct ena_offloads *offloads,
1656 struct ena_admin_feature_offload_desc *offload_desc)
1658 if (offload_desc->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
1659 offloads->tx_offloads |= ENA_IPV4_TSO;
1661 /* Tx IPv4 checksum offloads */
1662 if (offload_desc->tx &
1663 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)
1664 offloads->tx_offloads |= ENA_L3_IPV4_CSUM;
1665 if (offload_desc->tx &
1666 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK)
1667 offloads->tx_offloads |= ENA_L4_IPV4_CSUM;
1668 if (offload_desc->tx &
1669 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)
1670 offloads->tx_offloads |= ENA_L4_IPV4_CSUM_PARTIAL;
1672 /* Tx IPv6 checksum offloads */
1673 if (offload_desc->tx &
1674 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK)
1675 offloads->tx_offloads |= ENA_L4_IPV6_CSUM;
1676 if (offload_desc->tx &
1677 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK)
1678 offloads->tx_offloads |= ENA_L4_IPV6_CSUM_PARTIAL;
1680 /* Rx IPv4 checksum offloads */
1681 if (offload_desc->rx_supported &
1682 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK)
1683 offloads->rx_offloads |= ENA_L3_IPV4_CSUM;
1684 if (offload_desc->rx_supported &
1685 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK)
1686 offloads->rx_offloads |= ENA_L4_IPV4_CSUM;
1688 /* Rx IPv6 checksum offloads */
1689 if (offload_desc->rx_supported &
1690 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK)
1691 offloads->rx_offloads |= ENA_L4_IPV6_CSUM;
1693 if (offload_desc->rx_supported &
1694 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_MASK)
1695 offloads->rx_offloads |= ENA_RX_RSS_HASH;
1698 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
1700 struct ena_calc_queue_size_ctx calc_queue_ctx = { 0 };
1701 struct rte_pci_device *pci_dev;
1702 struct rte_intr_handle *intr_handle;
1703 struct ena_adapter *adapter = eth_dev->data->dev_private;
1704 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1705 struct ena_com_dev_get_features_ctx get_feat_ctx;
1706 struct ena_llq_configurations llq_config;
1707 const char *queue_type_str;
1708 uint32_t max_num_io_queues;
1710 static int adapters_found;
1711 bool disable_meta_caching;
1712 bool wd_state = false;
1714 eth_dev->dev_ops = &ena_dev_ops;
1715 eth_dev->rx_pkt_burst = ð_ena_recv_pkts;
1716 eth_dev->tx_pkt_burst = ð_ena_xmit_pkts;
1717 eth_dev->tx_pkt_prepare = ð_ena_prep_pkts;
1719 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1722 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1724 memset(adapter, 0, sizeof(struct ena_adapter));
1725 ena_dev = &adapter->ena_dev;
1727 adapter->edev_data = eth_dev->data;
1729 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1731 PMD_INIT_LOG(INFO, "Initializing %x:%x:%x.%d\n",
1732 pci_dev->addr.domain,
1734 pci_dev->addr.devid,
1735 pci_dev->addr.function);
1737 intr_handle = &pci_dev->intr_handle;
1739 adapter->regs = pci_dev->mem_resource[ENA_REGS_BAR].addr;
1740 adapter->dev_mem_base = pci_dev->mem_resource[ENA_MEM_BAR].addr;
1742 if (!adapter->regs) {
1743 PMD_INIT_LOG(CRIT, "Failed to access registers BAR(%d)\n",
1748 ena_dev->reg_bar = adapter->regs;
1749 /* This is a dummy pointer for ena_com functions. */
1750 ena_dev->dmadev = adapter;
1752 adapter->id_number = adapters_found;
1754 snprintf(adapter->name, ENA_NAME_MAX_LEN, "ena_%d",
1755 adapter->id_number);
1757 rc = ena_parse_devargs(adapter, pci_dev->device.devargs);
1759 PMD_INIT_LOG(CRIT, "Failed to parse devargs\n");
1763 /* device specific initialization routine */
1764 rc = ena_device_init(ena_dev, pci_dev, &get_feat_ctx, &wd_state);
1766 PMD_INIT_LOG(CRIT, "Failed to init ENA device\n");
1769 adapter->wd_state = wd_state;
1771 set_default_llq_configurations(&llq_config, &get_feat_ctx.llq,
1772 adapter->use_large_llq_hdr);
1773 rc = ena_set_queues_placement_policy(adapter, ena_dev,
1774 &get_feat_ctx.llq, &llq_config);
1776 PMD_INIT_LOG(CRIT, "Failed to set placement policy\n");
1780 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
1781 queue_type_str = "Regular";
1783 queue_type_str = "Low latency";
1784 PMD_DRV_LOG(INFO, "Placement policy: %s\n", queue_type_str);
1786 calc_queue_ctx.ena_dev = ena_dev;
1787 calc_queue_ctx.get_feat_ctx = &get_feat_ctx;
1789 max_num_io_queues = ena_calc_max_io_queue_num(ena_dev, &get_feat_ctx);
1790 rc = ena_calc_io_queue_size(&calc_queue_ctx,
1791 adapter->use_large_llq_hdr);
1792 if (unlikely((rc != 0) || (max_num_io_queues == 0))) {
1794 goto err_device_destroy;
1797 adapter->max_tx_ring_size = calc_queue_ctx.max_tx_queue_size;
1798 adapter->max_rx_ring_size = calc_queue_ctx.max_rx_queue_size;
1799 adapter->max_tx_sgl_size = calc_queue_ctx.max_tx_sgl_size;
1800 adapter->max_rx_sgl_size = calc_queue_ctx.max_rx_sgl_size;
1801 adapter->max_num_io_queues = max_num_io_queues;
1803 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
1804 disable_meta_caching =
1805 !!(get_feat_ctx.llq.accel_mode.u.get.supported_flags &
1806 BIT(ENA_ADMIN_DISABLE_META_CACHING));
1808 disable_meta_caching = false;
1811 /* prepare ring structures */
1812 ena_init_rings(adapter, disable_meta_caching);
1814 ena_config_debug_area(adapter);
1816 /* Set max MTU for this device */
1817 adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu;
1819 ena_set_offloads(&adapter->offloads, &get_feat_ctx.offload);
1821 /* Copy MAC address and point DPDK to it */
1822 eth_dev->data->mac_addrs = (struct rte_ether_addr *)adapter->mac_addr;
1823 rte_ether_addr_copy((struct rte_ether_addr *)
1824 get_feat_ctx.dev_attr.mac_addr,
1825 (struct rte_ether_addr *)adapter->mac_addr);
1827 rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
1828 if (unlikely(rc != 0)) {
1829 PMD_DRV_LOG(ERR, "Failed to initialize RSS in ENA device\n");
1830 goto err_delete_debug_area;
1833 adapter->drv_stats = rte_zmalloc("adapter stats",
1834 sizeof(*adapter->drv_stats),
1835 RTE_CACHE_LINE_SIZE);
1836 if (!adapter->drv_stats) {
1838 "Failed to allocate memory for adapter statistics\n");
1840 goto err_rss_destroy;
1843 rte_spinlock_init(&adapter->admin_lock);
1845 rte_intr_callback_register(intr_handle,
1846 ena_interrupt_handler_rte,
1848 rte_intr_enable(intr_handle);
1849 ena_com_set_admin_polling_mode(ena_dev, false);
1850 ena_com_admin_aenq_enable(ena_dev);
1852 if (adapters_found == 0)
1853 rte_timer_subsystem_init();
1854 rte_timer_init(&adapter->timer_wd);
1857 adapter->state = ENA_ADAPTER_STATE_INIT;
1862 ena_com_rss_destroy(ena_dev);
1863 err_delete_debug_area:
1864 ena_com_delete_debug_area(ena_dev);
1867 ena_com_delete_host_info(ena_dev);
1868 ena_com_admin_destroy(ena_dev);
1874 static void ena_destroy_device(struct rte_eth_dev *eth_dev)
1876 struct ena_adapter *adapter = eth_dev->data->dev_private;
1877 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1879 if (adapter->state == ENA_ADAPTER_STATE_FREE)
1882 ena_com_set_admin_running_state(ena_dev, false);
1884 if (adapter->state != ENA_ADAPTER_STATE_CLOSED)
1887 ena_com_rss_destroy(ena_dev);
1889 ena_com_delete_debug_area(ena_dev);
1890 ena_com_delete_host_info(ena_dev);
1892 ena_com_abort_admin_commands(ena_dev);
1893 ena_com_wait_for_abort_completion(ena_dev);
1894 ena_com_admin_destroy(ena_dev);
1895 ena_com_mmio_reg_read_request_destroy(ena_dev);
1897 adapter->state = ENA_ADAPTER_STATE_FREE;
1900 static int eth_ena_dev_uninit(struct rte_eth_dev *eth_dev)
1902 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1905 ena_destroy_device(eth_dev);
1910 static int ena_dev_configure(struct rte_eth_dev *dev)
1912 struct ena_adapter *adapter = dev->data->dev_private;
1914 adapter->state = ENA_ADAPTER_STATE_CONFIG;
1916 if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
1917 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
1918 dev->data->dev_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
1920 adapter->tx_selected_offloads = dev->data->dev_conf.txmode.offloads;
1921 adapter->rx_selected_offloads = dev->data->dev_conf.rxmode.offloads;
1925 static void ena_init_rings(struct ena_adapter *adapter,
1926 bool disable_meta_caching)
1930 for (i = 0; i < adapter->max_num_io_queues; i++) {
1931 struct ena_ring *ring = &adapter->tx_ring[i];
1933 ring->configured = 0;
1934 ring->type = ENA_RING_TYPE_TX;
1935 ring->adapter = adapter;
1937 ring->tx_mem_queue_type = adapter->ena_dev.tx_mem_queue_type;
1938 ring->tx_max_header_size = adapter->ena_dev.tx_max_header_size;
1939 ring->sgl_size = adapter->max_tx_sgl_size;
1940 ring->disable_meta_caching = disable_meta_caching;
1943 for (i = 0; i < adapter->max_num_io_queues; i++) {
1944 struct ena_ring *ring = &adapter->rx_ring[i];
1946 ring->configured = 0;
1947 ring->type = ENA_RING_TYPE_RX;
1948 ring->adapter = adapter;
1950 ring->sgl_size = adapter->max_rx_sgl_size;
1954 static uint64_t ena_get_rx_port_offloads(struct ena_adapter *adapter)
1956 uint64_t port_offloads = 0;
1958 if (adapter->offloads.rx_offloads & ENA_L3_IPV4_CSUM)
1959 port_offloads |= DEV_RX_OFFLOAD_IPV4_CKSUM;
1961 if (adapter->offloads.rx_offloads &
1962 (ENA_L4_IPV4_CSUM | ENA_L4_IPV6_CSUM))
1964 DEV_RX_OFFLOAD_UDP_CKSUM | DEV_RX_OFFLOAD_TCP_CKSUM;
1966 if (adapter->offloads.rx_offloads & ENA_RX_RSS_HASH)
1967 port_offloads |= DEV_RX_OFFLOAD_RSS_HASH;
1969 return port_offloads;
1972 static uint64_t ena_get_tx_port_offloads(struct ena_adapter *adapter)
1974 uint64_t port_offloads = 0;
1976 if (adapter->offloads.tx_offloads & ENA_IPV4_TSO)
1977 port_offloads |= DEV_TX_OFFLOAD_TCP_TSO;
1979 if (adapter->offloads.tx_offloads & ENA_L3_IPV4_CSUM)
1980 port_offloads |= DEV_TX_OFFLOAD_IPV4_CKSUM;
1981 if (adapter->offloads.tx_offloads &
1982 (ENA_L4_IPV4_CSUM_PARTIAL | ENA_L4_IPV4_CSUM |
1983 ENA_L4_IPV6_CSUM | ENA_L4_IPV6_CSUM_PARTIAL))
1985 DEV_TX_OFFLOAD_UDP_CKSUM | DEV_TX_OFFLOAD_TCP_CKSUM;
1987 port_offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
1989 return port_offloads;
1992 static uint64_t ena_get_rx_queue_offloads(struct ena_adapter *adapter)
1994 RTE_SET_USED(adapter);
1999 static uint64_t ena_get_tx_queue_offloads(struct ena_adapter *adapter)
2001 RTE_SET_USED(adapter);
2006 static int ena_infos_get(struct rte_eth_dev *dev,
2007 struct rte_eth_dev_info *dev_info)
2009 struct ena_adapter *adapter;
2010 struct ena_com_dev *ena_dev;
2012 ena_assert_msg(dev->data != NULL, "Uninitialized device\n");
2013 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device\n");
2014 adapter = dev->data->dev_private;
2016 ena_dev = &adapter->ena_dev;
2017 ena_assert_msg(ena_dev != NULL, "Uninitialized device\n");
2019 dev_info->speed_capa =
2021 ETH_LINK_SPEED_2_5G |
2023 ETH_LINK_SPEED_10G |
2024 ETH_LINK_SPEED_25G |
2025 ETH_LINK_SPEED_40G |
2026 ETH_LINK_SPEED_50G |
2027 ETH_LINK_SPEED_100G;
2029 /* Inform framework about available features */
2030 dev_info->rx_offload_capa = ena_get_rx_port_offloads(adapter);
2031 dev_info->tx_offload_capa = ena_get_tx_port_offloads(adapter);
2032 dev_info->rx_queue_offload_capa = ena_get_rx_queue_offloads(adapter);
2033 dev_info->tx_queue_offload_capa = ena_get_tx_queue_offloads(adapter);
2035 dev_info->flow_type_rss_offloads = ENA_ALL_RSS_HF;
2036 dev_info->hash_key_size = ENA_HASH_KEY_SIZE;
2038 dev_info->min_rx_bufsize = ENA_MIN_FRAME_LEN;
2039 dev_info->max_rx_pktlen = adapter->max_mtu + RTE_ETHER_HDR_LEN +
2041 dev_info->min_mtu = ENA_MIN_MTU;
2042 dev_info->max_mtu = adapter->max_mtu;
2043 dev_info->max_mac_addrs = 1;
2045 dev_info->max_rx_queues = adapter->max_num_io_queues;
2046 dev_info->max_tx_queues = adapter->max_num_io_queues;
2047 dev_info->reta_size = ENA_RX_RSS_TABLE_SIZE;
2049 dev_info->rx_desc_lim.nb_max = adapter->max_rx_ring_size;
2050 dev_info->rx_desc_lim.nb_min = ENA_MIN_RING_DESC;
2051 dev_info->rx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2052 adapter->max_rx_sgl_size);
2053 dev_info->rx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2054 adapter->max_rx_sgl_size);
2056 dev_info->tx_desc_lim.nb_max = adapter->max_tx_ring_size;
2057 dev_info->tx_desc_lim.nb_min = ENA_MIN_RING_DESC;
2058 dev_info->tx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2059 adapter->max_tx_sgl_size);
2060 dev_info->tx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2061 adapter->max_tx_sgl_size);
2063 dev_info->default_rxportconf.ring_size = ENA_DEFAULT_RING_SIZE;
2064 dev_info->default_txportconf.ring_size = ENA_DEFAULT_RING_SIZE;
2069 static inline void ena_init_rx_mbuf(struct rte_mbuf *mbuf, uint16_t len)
2071 mbuf->data_len = len;
2072 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
2077 static struct rte_mbuf *ena_rx_mbuf(struct ena_ring *rx_ring,
2078 struct ena_com_rx_buf_info *ena_bufs,
2080 uint16_t *next_to_clean,
2083 struct rte_mbuf *mbuf;
2084 struct rte_mbuf *mbuf_head;
2085 struct ena_rx_buffer *rx_info;
2087 uint16_t ntc, len, req_id, buf = 0;
2089 if (unlikely(descs == 0))
2092 ntc = *next_to_clean;
2094 len = ena_bufs[buf].len;
2095 req_id = ena_bufs[buf].req_id;
2097 rx_info = &rx_ring->rx_buffer_info[req_id];
2099 mbuf = rx_info->mbuf;
2100 RTE_ASSERT(mbuf != NULL);
2102 ena_init_rx_mbuf(mbuf, len);
2104 /* Fill the mbuf head with the data specific for 1st segment. */
2106 mbuf_head->nb_segs = descs;
2107 mbuf_head->port = rx_ring->port_id;
2108 mbuf_head->pkt_len = len;
2109 mbuf_head->data_off += offset;
2111 rx_info->mbuf = NULL;
2112 rx_ring->empty_rx_reqs[ntc] = req_id;
2113 ntc = ENA_IDX_NEXT_MASKED(ntc, rx_ring->size_mask);
2117 len = ena_bufs[buf].len;
2118 req_id = ena_bufs[buf].req_id;
2120 rx_info = &rx_ring->rx_buffer_info[req_id];
2121 RTE_ASSERT(rx_info->mbuf != NULL);
2123 if (unlikely(len == 0)) {
2125 * Some devices can pass descriptor with the length 0.
2126 * To avoid confusion, the PMD is simply putting the
2127 * descriptor back, as it was never used. We'll avoid
2128 * mbuf allocation that way.
2130 rc = ena_add_single_rx_desc(rx_ring->ena_com_io_sq,
2131 rx_info->mbuf, req_id);
2132 if (unlikely(rc != 0)) {
2133 /* Free the mbuf in case of an error. */
2134 rte_mbuf_raw_free(rx_info->mbuf);
2137 * If there was no error, just exit the loop as
2138 * 0 length descriptor is always the last one.
2143 /* Create an mbuf chain. */
2144 mbuf->next = rx_info->mbuf;
2147 ena_init_rx_mbuf(mbuf, len);
2148 mbuf_head->pkt_len += len;
2152 * Mark the descriptor as depleted and perform necessary
2154 * This code will execute in two cases:
2155 * 1. Descriptor len was greater than 0 - normal situation.
2156 * 2. Descriptor len was 0 and we failed to add the descriptor
2157 * to the device. In that situation, we should try to add
2158 * the mbuf again in the populate routine and mark the
2159 * descriptor as used up by the device.
2161 rx_info->mbuf = NULL;
2162 rx_ring->empty_rx_reqs[ntc] = req_id;
2163 ntc = ENA_IDX_NEXT_MASKED(ntc, rx_ring->size_mask);
2166 *next_to_clean = ntc;
2171 static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
2174 struct ena_ring *rx_ring = (struct ena_ring *)(rx_queue);
2175 unsigned int free_queue_entries;
2176 uint16_t next_to_clean = rx_ring->next_to_clean;
2177 uint16_t descs_in_use;
2178 struct rte_mbuf *mbuf;
2180 struct ena_com_rx_ctx ena_rx_ctx;
2184 #ifdef RTE_ETHDEV_DEBUG_RX
2185 /* Check adapter state */
2186 if (unlikely(rx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2188 "Trying to receive pkts while device is NOT running\n");
2193 fill_hash = rx_ring->offloads & DEV_RX_OFFLOAD_RSS_HASH;
2195 descs_in_use = rx_ring->ring_size -
2196 ena_com_free_q_entries(rx_ring->ena_com_io_sq) - 1;
2197 nb_pkts = RTE_MIN(descs_in_use, nb_pkts);
2199 for (completed = 0; completed < nb_pkts; completed++) {
2200 ena_rx_ctx.max_bufs = rx_ring->sgl_size;
2201 ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
2202 ena_rx_ctx.descs = 0;
2203 ena_rx_ctx.pkt_offset = 0;
2204 /* receive packet context */
2205 rc = ena_com_rx_pkt(rx_ring->ena_com_io_cq,
2206 rx_ring->ena_com_io_sq,
2210 "Failed to get the packet from the device, rc: %d\n",
2212 if (rc == ENA_COM_NO_SPACE) {
2213 ++rx_ring->rx_stats.bad_desc_num;
2214 rx_ring->adapter->reset_reason =
2215 ENA_REGS_RESET_TOO_MANY_RX_DESCS;
2217 ++rx_ring->rx_stats.bad_req_id;
2218 rx_ring->adapter->reset_reason =
2219 ENA_REGS_RESET_INV_RX_REQ_ID;
2221 rx_ring->adapter->trigger_reset = true;
2225 mbuf = ena_rx_mbuf(rx_ring,
2226 ena_rx_ctx.ena_bufs,
2229 ena_rx_ctx.pkt_offset);
2230 if (unlikely(mbuf == NULL)) {
2231 for (i = 0; i < ena_rx_ctx.descs; ++i) {
2232 rx_ring->empty_rx_reqs[next_to_clean] =
2233 rx_ring->ena_bufs[i].req_id;
2234 next_to_clean = ENA_IDX_NEXT_MASKED(
2235 next_to_clean, rx_ring->size_mask);
2240 /* fill mbuf attributes if any */
2241 ena_rx_mbuf_prepare(mbuf, &ena_rx_ctx, fill_hash);
2243 if (unlikely(mbuf->ol_flags &
2244 (PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD))) {
2245 rte_atomic64_inc(&rx_ring->adapter->drv_stats->ierrors);
2246 ++rx_ring->rx_stats.bad_csum;
2249 rx_pkts[completed] = mbuf;
2250 rx_ring->rx_stats.bytes += mbuf->pkt_len;
2253 rx_ring->rx_stats.cnt += completed;
2254 rx_ring->next_to_clean = next_to_clean;
2256 free_queue_entries = ena_com_free_q_entries(rx_ring->ena_com_io_sq);
2258 /* Burst refill to save doorbells, memory barriers, const interval */
2259 if (free_queue_entries >= rx_ring->rx_free_thresh) {
2260 ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq);
2261 ena_populate_rx_queue(rx_ring, free_queue_entries);
2268 eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2274 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2275 struct ena_adapter *adapter = tx_ring->adapter;
2276 struct rte_ipv4_hdr *ip_hdr;
2278 uint64_t l4_csum_flag;
2279 uint64_t dev_offload_capa;
2280 uint16_t frag_field;
2281 bool need_pseudo_csum;
2283 dev_offload_capa = adapter->offloads.tx_offloads;
2284 for (i = 0; i != nb_pkts; i++) {
2286 ol_flags = m->ol_flags;
2288 /* Check if any offload flag was set */
2292 l4_csum_flag = ol_flags & PKT_TX_L4_MASK;
2293 /* SCTP checksum offload is not supported by the ENA. */
2294 if ((ol_flags & ENA_TX_OFFLOAD_NOTSUP_MASK) ||
2295 l4_csum_flag == PKT_TX_SCTP_CKSUM) {
2297 "mbuf[%" PRIu32 "] has unsupported offloads flags set: 0x%" PRIu64 "\n",
2299 rte_errno = ENOTSUP;
2303 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
2304 /* Check if requested offload is also enabled for the queue */
2305 if ((ol_flags & PKT_TX_IP_CKSUM &&
2306 !(tx_ring->offloads & DEV_TX_OFFLOAD_IPV4_CKSUM)) ||
2307 (l4_csum_flag == PKT_TX_TCP_CKSUM &&
2308 !(tx_ring->offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) ||
2309 (l4_csum_flag == PKT_TX_UDP_CKSUM &&
2310 !(tx_ring->offloads & DEV_TX_OFFLOAD_UDP_CKSUM))) {
2312 "mbuf[%" PRIu32 "]: requested offloads: %" PRIu16 " are not enabled for the queue[%u]\n",
2313 i, m->nb_segs, tx_ring->id);
2318 /* The caller is obligated to set l2 and l3 len if any cksum
2319 * offload is enabled.
2321 if (unlikely(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK) &&
2322 (m->l2_len == 0 || m->l3_len == 0))) {
2324 "mbuf[%" PRIu32 "]: l2_len or l3_len values are 0 while the offload was requested\n",
2329 ret = rte_validate_tx_offload(m);
2336 /* Verify HW support for requested offloads and determine if
2337 * pseudo header checksum is needed.
2339 need_pseudo_csum = false;
2340 if (ol_flags & PKT_TX_IPV4) {
2341 if (ol_flags & PKT_TX_IP_CKSUM &&
2342 !(dev_offload_capa & ENA_L3_IPV4_CSUM)) {
2343 rte_errno = ENOTSUP;
2347 if (ol_flags & PKT_TX_TCP_SEG &&
2348 !(dev_offload_capa & ENA_IPV4_TSO)) {
2349 rte_errno = ENOTSUP;
2353 /* Check HW capabilities and if pseudo csum is needed
2356 if (l4_csum_flag != PKT_TX_L4_NO_CKSUM &&
2357 !(dev_offload_capa & ENA_L4_IPV4_CSUM)) {
2358 if (dev_offload_capa &
2359 ENA_L4_IPV4_CSUM_PARTIAL) {
2360 need_pseudo_csum = true;
2362 rte_errno = ENOTSUP;
2367 /* Parse the DF flag */
2368 ip_hdr = rte_pktmbuf_mtod_offset(m,
2369 struct rte_ipv4_hdr *, m->l2_len);
2370 frag_field = rte_be_to_cpu_16(ip_hdr->fragment_offset);
2371 if (frag_field & RTE_IPV4_HDR_DF_FLAG) {
2372 m->packet_type |= RTE_PTYPE_L4_NONFRAG;
2373 } else if (ol_flags & PKT_TX_TCP_SEG) {
2374 /* In case we are supposed to TSO and have DF
2375 * not set (DF=0) hardware must be provided with
2378 need_pseudo_csum = true;
2380 } else if (ol_flags & PKT_TX_IPV6) {
2381 /* There is no support for IPv6 TSO as for now. */
2382 if (ol_flags & PKT_TX_TCP_SEG) {
2383 rte_errno = ENOTSUP;
2387 /* Check HW capabilities and if pseudo csum is needed */
2388 if (l4_csum_flag != PKT_TX_L4_NO_CKSUM &&
2389 !(dev_offload_capa & ENA_L4_IPV6_CSUM)) {
2390 if (dev_offload_capa &
2391 ENA_L4_IPV6_CSUM_PARTIAL) {
2392 need_pseudo_csum = true;
2394 rte_errno = ENOTSUP;
2400 if (need_pseudo_csum) {
2401 ret = rte_net_intel_cksum_flags_prepare(m, ol_flags);
2412 static void ena_update_hints(struct ena_adapter *adapter,
2413 struct ena_admin_ena_hw_hints *hints)
2415 if (hints->admin_completion_tx_timeout)
2416 adapter->ena_dev.admin_queue.completion_timeout =
2417 hints->admin_completion_tx_timeout * 1000;
2419 if (hints->mmio_read_timeout)
2420 /* convert to usec */
2421 adapter->ena_dev.mmio_read.reg_read_to =
2422 hints->mmio_read_timeout * 1000;
2424 if (hints->driver_watchdog_timeout) {
2425 if (hints->driver_watchdog_timeout == ENA_HW_HINTS_NO_TIMEOUT)
2426 adapter->keep_alive_timeout = ENA_HW_HINTS_NO_TIMEOUT;
2428 // Convert msecs to ticks
2429 adapter->keep_alive_timeout =
2430 (hints->driver_watchdog_timeout *
2431 rte_get_timer_hz()) / 1000;
2435 static int ena_check_space_and_linearize_mbuf(struct ena_ring *tx_ring,
2436 struct rte_mbuf *mbuf)
2438 struct ena_com_dev *ena_dev;
2439 int num_segments, header_len, rc;
2441 ena_dev = &tx_ring->adapter->ena_dev;
2442 num_segments = mbuf->nb_segs;
2443 header_len = mbuf->data_len;
2445 if (likely(num_segments < tx_ring->sgl_size))
2448 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV &&
2449 (num_segments == tx_ring->sgl_size) &&
2450 (header_len < tx_ring->tx_max_header_size))
2453 /* Checking for space for 2 additional metadata descriptors due to
2454 * possible header split and metadata descriptor. Linearization will
2455 * be needed so we reduce the segments number from num_segments to 1
2457 if (!ena_com_sq_have_enough_space(tx_ring->ena_com_io_sq, 3)) {
2458 PMD_TX_LOG(DEBUG, "Not enough space in the Tx queue\n");
2459 return ENA_COM_NO_MEM;
2461 ++tx_ring->tx_stats.linearize;
2462 rc = rte_pktmbuf_linearize(mbuf);
2464 PMD_TX_LOG(WARNING, "Mbuf linearize failed\n");
2465 rte_atomic64_inc(&tx_ring->adapter->drv_stats->ierrors);
2466 ++tx_ring->tx_stats.linearize_failed;
2473 /* Checking for space for 2 additional metadata descriptors due to
2474 * possible header split and metadata descriptor
2476 if (!ena_com_sq_have_enough_space(tx_ring->ena_com_io_sq,
2477 num_segments + 2)) {
2478 PMD_TX_LOG(DEBUG, "Not enough space in the Tx queue\n");
2479 return ENA_COM_NO_MEM;
2485 static void ena_tx_map_mbuf(struct ena_ring *tx_ring,
2486 struct ena_tx_buffer *tx_info,
2487 struct rte_mbuf *mbuf,
2489 uint16_t *header_len)
2491 struct ena_com_buf *ena_buf;
2492 uint16_t delta, seg_len, push_len;
2495 seg_len = mbuf->data_len;
2497 tx_info->mbuf = mbuf;
2498 ena_buf = tx_info->bufs;
2500 if (tx_ring->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
2502 * Tx header might be (and will be in most cases) smaller than
2503 * tx_max_header_size. But it's not an issue to send more data
2504 * to the device, than actually needed if the mbuf size is
2505 * greater than tx_max_header_size.
2507 push_len = RTE_MIN(mbuf->pkt_len, tx_ring->tx_max_header_size);
2508 *header_len = push_len;
2510 if (likely(push_len <= seg_len)) {
2511 /* If the push header is in the single segment, then
2512 * just point it to the 1st mbuf data.
2514 *push_header = rte_pktmbuf_mtod(mbuf, uint8_t *);
2516 /* If the push header lays in the several segments, copy
2517 * it to the intermediate buffer.
2519 rte_pktmbuf_read(mbuf, 0, push_len,
2520 tx_ring->push_buf_intermediate_buf);
2521 *push_header = tx_ring->push_buf_intermediate_buf;
2522 delta = push_len - seg_len;
2525 *push_header = NULL;
2530 /* Process first segment taking into consideration pushed header */
2531 if (seg_len > push_len) {
2532 ena_buf->paddr = mbuf->buf_iova +
2535 ena_buf->len = seg_len - push_len;
2537 tx_info->num_of_bufs++;
2540 while ((mbuf = mbuf->next) != NULL) {
2541 seg_len = mbuf->data_len;
2543 /* Skip mbufs if whole data is pushed as a header */
2544 if (unlikely(delta > seg_len)) {
2549 ena_buf->paddr = mbuf->buf_iova + mbuf->data_off + delta;
2550 ena_buf->len = seg_len - delta;
2552 tx_info->num_of_bufs++;
2558 static int ena_xmit_mbuf(struct ena_ring *tx_ring, struct rte_mbuf *mbuf)
2560 struct ena_tx_buffer *tx_info;
2561 struct ena_com_tx_ctx ena_tx_ctx = { { 0 } };
2562 uint16_t next_to_use;
2563 uint16_t header_len;
2569 rc = ena_check_space_and_linearize_mbuf(tx_ring, mbuf);
2573 next_to_use = tx_ring->next_to_use;
2575 req_id = tx_ring->empty_tx_reqs[next_to_use];
2576 tx_info = &tx_ring->tx_buffer_info[req_id];
2577 tx_info->num_of_bufs = 0;
2579 ena_tx_map_mbuf(tx_ring, tx_info, mbuf, &push_header, &header_len);
2581 ena_tx_ctx.ena_bufs = tx_info->bufs;
2582 ena_tx_ctx.push_header = push_header;
2583 ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
2584 ena_tx_ctx.req_id = req_id;
2585 ena_tx_ctx.header_len = header_len;
2587 /* Set Tx offloads flags, if applicable */
2588 ena_tx_mbuf_prepare(mbuf, &ena_tx_ctx, tx_ring->offloads,
2589 tx_ring->disable_meta_caching);
2591 if (unlikely(ena_com_is_doorbell_needed(tx_ring->ena_com_io_sq,
2594 "LLQ Tx max burst size of queue %d achieved, writing doorbell to send burst\n",
2596 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2597 tx_ring->tx_stats.doorbells++;
2598 tx_ring->pkts_without_db = false;
2601 /* prepare the packet's descriptors to dma engine */
2602 rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq, &ena_tx_ctx,
2605 PMD_DRV_LOG(ERR, "Failed to prepare Tx buffers, rc: %d\n", rc);
2606 ++tx_ring->tx_stats.prepare_ctx_err;
2607 tx_ring->adapter->reset_reason =
2608 ENA_REGS_RESET_DRIVER_INVALID_STATE;
2609 tx_ring->adapter->trigger_reset = true;
2613 tx_info->tx_descs = nb_hw_desc;
2615 tx_ring->tx_stats.cnt++;
2616 tx_ring->tx_stats.bytes += mbuf->pkt_len;
2618 tx_ring->next_to_use = ENA_IDX_NEXT_MASKED(next_to_use,
2619 tx_ring->size_mask);
2624 static void ena_tx_cleanup(struct ena_ring *tx_ring)
2626 unsigned int total_tx_descs = 0;
2627 uint16_t cleanup_budget;
2628 uint16_t next_to_clean = tx_ring->next_to_clean;
2630 /* Attempt to release all Tx descriptors (ring_size - 1 -> size_mask) */
2631 cleanup_budget = tx_ring->size_mask;
2633 while (likely(total_tx_descs < cleanup_budget)) {
2634 struct rte_mbuf *mbuf;
2635 struct ena_tx_buffer *tx_info;
2638 if (ena_com_tx_comp_req_id_get(tx_ring->ena_com_io_cq, &req_id) != 0)
2641 if (unlikely(validate_tx_req_id(tx_ring, req_id) != 0))
2644 /* Get Tx info & store how many descs were processed */
2645 tx_info = &tx_ring->tx_buffer_info[req_id];
2647 mbuf = tx_info->mbuf;
2648 rte_pktmbuf_free(mbuf);
2650 tx_info->mbuf = NULL;
2651 tx_ring->empty_tx_reqs[next_to_clean] = req_id;
2653 total_tx_descs += tx_info->tx_descs;
2655 /* Put back descriptor to the ring for reuse */
2656 next_to_clean = ENA_IDX_NEXT_MASKED(next_to_clean,
2657 tx_ring->size_mask);
2660 if (likely(total_tx_descs > 0)) {
2661 /* acknowledge completion of sent packets */
2662 tx_ring->next_to_clean = next_to_clean;
2663 ena_com_comp_ack(tx_ring->ena_com_io_sq, total_tx_descs);
2664 ena_com_update_dev_comp_head(tx_ring->ena_com_io_cq);
2668 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2671 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2673 uint16_t sent_idx = 0;
2675 #ifdef RTE_ETHDEV_DEBUG_TX
2676 /* Check adapter state */
2677 if (unlikely(tx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2679 "Trying to xmit pkts while device is NOT running\n");
2684 for (sent_idx = 0; sent_idx < nb_pkts; sent_idx++) {
2685 if (ena_xmit_mbuf(tx_ring, tx_pkts[sent_idx]))
2687 tx_ring->pkts_without_db = true;
2688 rte_prefetch0(tx_pkts[ENA_IDX_ADD_MASKED(sent_idx, 4,
2689 tx_ring->size_mask)]);
2692 available_desc = ena_com_free_q_entries(tx_ring->ena_com_io_sq);
2693 tx_ring->tx_stats.available_desc = available_desc;
2695 /* If there are ready packets to be xmitted... */
2696 if (likely(tx_ring->pkts_without_db)) {
2697 /* ...let HW do its best :-) */
2698 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2699 tx_ring->tx_stats.doorbells++;
2700 tx_ring->pkts_without_db = false;
2703 if (available_desc < tx_ring->tx_free_thresh)
2704 ena_tx_cleanup(tx_ring);
2706 tx_ring->tx_stats.available_desc =
2707 ena_com_free_q_entries(tx_ring->ena_com_io_sq);
2708 tx_ring->tx_stats.tx_poll++;
2713 int ena_copy_eni_stats(struct ena_adapter *adapter)
2715 struct ena_admin_eni_stats admin_eni_stats;
2718 rte_spinlock_lock(&adapter->admin_lock);
2719 rc = ena_com_get_eni_stats(&adapter->ena_dev, &admin_eni_stats);
2720 rte_spinlock_unlock(&adapter->admin_lock);
2722 if (rc == ENA_COM_UNSUPPORTED) {
2724 "Retrieving ENI metrics is not supported\n");
2726 PMD_DRV_LOG(WARNING,
2727 "Failed to get ENI metrics, rc: %d\n", rc);
2732 rte_memcpy(&adapter->eni_stats, &admin_eni_stats,
2733 sizeof(struct ena_stats_eni));
2739 * DPDK callback to retrieve names of extended device statistics
2742 * Pointer to Ethernet device structure.
2743 * @param[out] xstats_names
2744 * Buffer to insert names into.
2749 * Number of xstats names.
2751 static int ena_xstats_get_names(struct rte_eth_dev *dev,
2752 struct rte_eth_xstat_name *xstats_names,
2755 unsigned int xstats_count = ena_xstats_calc_num(dev->data);
2756 unsigned int stat, i, count = 0;
2758 if (n < xstats_count || !xstats_names)
2759 return xstats_count;
2761 for (stat = 0; stat < ENA_STATS_ARRAY_GLOBAL; stat++, count++)
2762 strcpy(xstats_names[count].name,
2763 ena_stats_global_strings[stat].name);
2765 for (stat = 0; stat < ENA_STATS_ARRAY_ENI; stat++, count++)
2766 strcpy(xstats_names[count].name,
2767 ena_stats_eni_strings[stat].name);
2769 for (stat = 0; stat < ENA_STATS_ARRAY_RX; stat++)
2770 for (i = 0; i < dev->data->nb_rx_queues; i++, count++)
2771 snprintf(xstats_names[count].name,
2772 sizeof(xstats_names[count].name),
2774 ena_stats_rx_strings[stat].name);
2776 for (stat = 0; stat < ENA_STATS_ARRAY_TX; stat++)
2777 for (i = 0; i < dev->data->nb_tx_queues; i++, count++)
2778 snprintf(xstats_names[count].name,
2779 sizeof(xstats_names[count].name),
2781 ena_stats_tx_strings[stat].name);
2783 return xstats_count;
2787 * DPDK callback to get extended device statistics.
2790 * Pointer to Ethernet device structure.
2792 * Stats table output buffer.
2794 * The size of the stats table.
2797 * Number of xstats on success, negative on failure.
2799 static int ena_xstats_get(struct rte_eth_dev *dev,
2800 struct rte_eth_xstat *xstats,
2803 struct ena_adapter *adapter = dev->data->dev_private;
2804 unsigned int xstats_count = ena_xstats_calc_num(dev->data);
2805 unsigned int stat, i, count = 0;
2809 if (n < xstats_count)
2810 return xstats_count;
2815 for (stat = 0; stat < ENA_STATS_ARRAY_GLOBAL; stat++, count++) {
2816 stat_offset = ena_stats_global_strings[stat].stat_offset;
2817 stats_begin = &adapter->dev_stats;
2819 xstats[count].id = count;
2820 xstats[count].value = *((uint64_t *)
2821 ((char *)stats_begin + stat_offset));
2824 /* Even if the function below fails, we should copy previous (or initial
2825 * values) to keep structure of rte_eth_xstat consistent.
2827 ena_copy_eni_stats(adapter);
2828 for (stat = 0; stat < ENA_STATS_ARRAY_ENI; stat++, count++) {
2829 stat_offset = ena_stats_eni_strings[stat].stat_offset;
2830 stats_begin = &adapter->eni_stats;
2832 xstats[count].id = count;
2833 xstats[count].value = *((uint64_t *)
2834 ((char *)stats_begin + stat_offset));
2837 for (stat = 0; stat < ENA_STATS_ARRAY_RX; stat++) {
2838 for (i = 0; i < dev->data->nb_rx_queues; i++, count++) {
2839 stat_offset = ena_stats_rx_strings[stat].stat_offset;
2840 stats_begin = &adapter->rx_ring[i].rx_stats;
2842 xstats[count].id = count;
2843 xstats[count].value = *((uint64_t *)
2844 ((char *)stats_begin + stat_offset));
2848 for (stat = 0; stat < ENA_STATS_ARRAY_TX; stat++) {
2849 for (i = 0; i < dev->data->nb_tx_queues; i++, count++) {
2850 stat_offset = ena_stats_tx_strings[stat].stat_offset;
2851 stats_begin = &adapter->tx_ring[i].rx_stats;
2853 xstats[count].id = count;
2854 xstats[count].value = *((uint64_t *)
2855 ((char *)stats_begin + stat_offset));
2862 static int ena_xstats_get_by_id(struct rte_eth_dev *dev,
2863 const uint64_t *ids,
2867 struct ena_adapter *adapter = dev->data->dev_private;
2869 uint64_t rx_entries, tx_entries;
2873 bool was_eni_copied = false;
2875 for (i = 0; i < n; ++i) {
2877 /* Check if id belongs to global statistics */
2878 if (id < ENA_STATS_ARRAY_GLOBAL) {
2879 values[i] = *((uint64_t *)&adapter->dev_stats + id);
2884 /* Check if id belongs to ENI statistics */
2885 id -= ENA_STATS_ARRAY_GLOBAL;
2886 if (id < ENA_STATS_ARRAY_ENI) {
2887 /* Avoid reading ENI stats multiple times in a single
2888 * function call, as it requires communication with the
2891 if (!was_eni_copied) {
2892 was_eni_copied = true;
2893 ena_copy_eni_stats(adapter);
2895 values[i] = *((uint64_t *)&adapter->eni_stats + id);
2900 /* Check if id belongs to rx queue statistics */
2901 id -= ENA_STATS_ARRAY_ENI;
2902 rx_entries = ENA_STATS_ARRAY_RX * dev->data->nb_rx_queues;
2903 if (id < rx_entries) {
2904 qid = id % dev->data->nb_rx_queues;
2905 id /= dev->data->nb_rx_queues;
2906 values[i] = *((uint64_t *)
2907 &adapter->rx_ring[qid].rx_stats + id);
2911 /* Check if id belongs to rx queue statistics */
2913 tx_entries = ENA_STATS_ARRAY_TX * dev->data->nb_tx_queues;
2914 if (id < tx_entries) {
2915 qid = id % dev->data->nb_tx_queues;
2916 id /= dev->data->nb_tx_queues;
2917 values[i] = *((uint64_t *)
2918 &adapter->tx_ring[qid].tx_stats + id);
2927 static int ena_process_bool_devarg(const char *key,
2931 struct ena_adapter *adapter = opaque;
2934 /* Parse the value. */
2935 if (strcmp(value, "1") == 0) {
2937 } else if (strcmp(value, "0") == 0) {
2941 "Invalid value: '%s' for key '%s'. Accepted: '0' or '1'\n",
2946 /* Now, assign it to the proper adapter field. */
2947 if (strcmp(key, ENA_DEVARG_LARGE_LLQ_HDR) == 0)
2948 adapter->use_large_llq_hdr = bool_value;
2953 static int ena_parse_devargs(struct ena_adapter *adapter,
2954 struct rte_devargs *devargs)
2956 static const char * const allowed_args[] = {
2957 ENA_DEVARG_LARGE_LLQ_HDR,
2960 struct rte_kvargs *kvlist;
2963 if (devargs == NULL)
2966 kvlist = rte_kvargs_parse(devargs->args, allowed_args);
2967 if (kvlist == NULL) {
2968 PMD_INIT_LOG(ERR, "Invalid device arguments: %s\n",
2973 rc = rte_kvargs_process(kvlist, ENA_DEVARG_LARGE_LLQ_HDR,
2974 ena_process_bool_devarg, adapter);
2976 rte_kvargs_free(kvlist);
2981 static int ena_setup_rx_intr(struct rte_eth_dev *dev)
2983 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
2984 struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
2986 uint16_t vectors_nb, i;
2987 bool rx_intr_requested = dev->data->dev_conf.intr_conf.rxq;
2989 if (!rx_intr_requested)
2992 if (!rte_intr_cap_multiple(intr_handle)) {
2994 "Rx interrupt requested, but it isn't supported by the PCI driver\n");
2998 /* Disable interrupt mapping before the configuration starts. */
2999 rte_intr_disable(intr_handle);
3001 /* Verify if there are enough vectors available. */
3002 vectors_nb = dev->data->nb_rx_queues;
3003 if (vectors_nb > RTE_MAX_RXTX_INTR_VEC_ID) {
3005 "Too many Rx interrupts requested, maximum number: %d\n",
3006 RTE_MAX_RXTX_INTR_VEC_ID);
3011 intr_handle->intr_vec = rte_zmalloc("intr_vec",
3012 dev->data->nb_rx_queues * sizeof(*intr_handle->intr_vec), 0);
3013 if (intr_handle->intr_vec == NULL) {
3015 "Failed to allocate interrupt vector for %d queues\n",
3016 dev->data->nb_rx_queues);
3021 rc = rte_intr_efd_enable(intr_handle, vectors_nb);
3025 if (!rte_intr_allow_others(intr_handle)) {
3027 "Not enough interrupts available to use both ENA Admin and Rx interrupts\n");
3028 goto disable_intr_efd;
3031 for (i = 0; i < vectors_nb; ++i)
3032 intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + i;
3034 rte_intr_enable(intr_handle);
3038 rte_intr_efd_disable(intr_handle);
3040 rte_free(intr_handle->intr_vec);
3041 intr_handle->intr_vec = NULL;
3043 rte_intr_enable(intr_handle);
3047 static void ena_rx_queue_intr_set(struct rte_eth_dev *dev,
3051 struct ena_adapter *adapter = dev->data->dev_private;
3052 struct ena_ring *rxq = &adapter->rx_ring[queue_id];
3053 struct ena_eth_io_intr_reg intr_reg;
3055 ena_com_update_intr_reg(&intr_reg, 0, 0, unmask);
3056 ena_com_unmask_intr(rxq->ena_com_io_cq, &intr_reg);
3059 static int ena_rx_queue_intr_enable(struct rte_eth_dev *dev,
3062 ena_rx_queue_intr_set(dev, queue_id, true);
3067 static int ena_rx_queue_intr_disable(struct rte_eth_dev *dev,
3070 ena_rx_queue_intr_set(dev, queue_id, false);
3075 /*********************************************************************
3077 *********************************************************************/
3078 static int eth_ena_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
3079 struct rte_pci_device *pci_dev)
3081 return rte_eth_dev_pci_generic_probe(pci_dev,
3082 sizeof(struct ena_adapter), eth_ena_dev_init);
3085 static int eth_ena_pci_remove(struct rte_pci_device *pci_dev)
3087 return rte_eth_dev_pci_generic_remove(pci_dev, eth_ena_dev_uninit);
3090 static struct rte_pci_driver rte_ena_pmd = {
3091 .id_table = pci_id_ena_map,
3092 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
3093 RTE_PCI_DRV_WC_ACTIVATE,
3094 .probe = eth_ena_pci_probe,
3095 .remove = eth_ena_pci_remove,
3098 RTE_PMD_REGISTER_PCI(net_ena, rte_ena_pmd);
3099 RTE_PMD_REGISTER_PCI_TABLE(net_ena, pci_id_ena_map);
3100 RTE_PMD_REGISTER_KMOD_DEP(net_ena, "* igb_uio | uio_pci_generic | vfio-pci");
3101 RTE_PMD_REGISTER_PARAM_STRING(net_ena, ENA_DEVARG_LARGE_LLQ_HDR "=<0|1>");
3102 RTE_LOG_REGISTER_SUFFIX(ena_logtype_init, init, NOTICE);
3103 RTE_LOG_REGISTER_SUFFIX(ena_logtype_driver, driver, NOTICE);
3104 #ifdef RTE_ETHDEV_DEBUG_RX
3105 RTE_LOG_REGISTER_SUFFIX(ena_logtype_rx, rx, DEBUG);
3107 #ifdef RTE_ETHDEV_DEBUG_TX
3108 RTE_LOG_REGISTER_SUFFIX(ena_logtype_tx, tx, DEBUG);
3110 RTE_LOG_REGISTER_SUFFIX(ena_logtype_com, com, WARNING);
3112 /******************************************************************************
3113 ******************************** AENQ Handlers *******************************
3114 *****************************************************************************/
3115 static void ena_update_on_link_change(void *adapter_data,
3116 struct ena_admin_aenq_entry *aenq_e)
3118 struct rte_eth_dev *eth_dev = adapter_data;
3119 struct ena_adapter *adapter = eth_dev->data->dev_private;
3120 struct ena_admin_aenq_link_change_desc *aenq_link_desc;
3123 aenq_link_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
3125 status = get_ena_admin_aenq_link_change_desc_link_status(aenq_link_desc);
3126 adapter->link_status = status;
3128 ena_link_update(eth_dev, 0);
3129 rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
3132 static void ena_notification(void *adapter_data,
3133 struct ena_admin_aenq_entry *aenq_e)
3135 struct rte_eth_dev *eth_dev = adapter_data;
3136 struct ena_adapter *adapter = eth_dev->data->dev_private;
3137 struct ena_admin_ena_hw_hints *hints;
3139 if (aenq_e->aenq_common_desc.group != ENA_ADMIN_NOTIFICATION)
3140 PMD_DRV_LOG(WARNING, "Invalid AENQ group: %x. Expected: %x\n",
3141 aenq_e->aenq_common_desc.group,
3142 ENA_ADMIN_NOTIFICATION);
3144 switch (aenq_e->aenq_common_desc.syndrome) {
3145 case ENA_ADMIN_UPDATE_HINTS:
3146 hints = (struct ena_admin_ena_hw_hints *)
3147 (&aenq_e->inline_data_w4);
3148 ena_update_hints(adapter, hints);
3151 PMD_DRV_LOG(ERR, "Invalid AENQ notification link state: %d\n",
3152 aenq_e->aenq_common_desc.syndrome);
3156 static void ena_keep_alive(void *adapter_data,
3157 __rte_unused struct ena_admin_aenq_entry *aenq_e)
3159 struct rte_eth_dev *eth_dev = adapter_data;
3160 struct ena_adapter *adapter = eth_dev->data->dev_private;
3161 struct ena_admin_aenq_keep_alive_desc *desc;
3165 adapter->timestamp_wd = rte_get_timer_cycles();
3167 desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e;
3168 rx_drops = ((uint64_t)desc->rx_drops_high << 32) | desc->rx_drops_low;
3169 tx_drops = ((uint64_t)desc->tx_drops_high << 32) | desc->tx_drops_low;
3171 adapter->drv_stats->rx_drops = rx_drops;
3172 adapter->dev_stats.tx_drops = tx_drops;
3176 * This handler will called for unknown event group or unimplemented handlers
3178 static void unimplemented_aenq_handler(__rte_unused void *data,
3179 __rte_unused struct ena_admin_aenq_entry *aenq_e)
3182 "Unknown event was received or event with unimplemented handler\n");
3185 static struct ena_aenq_handlers aenq_handlers = {
3187 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
3188 [ENA_ADMIN_NOTIFICATION] = ena_notification,
3189 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive
3191 .unimplemented_handler = unimplemented_aenq_handler