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 5
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)
42 char name[ETH_GSTRING_LEN];
46 #define ENA_STAT_ENTRY(stat, stat_type) { \
48 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
51 #define ENA_STAT_RX_ENTRY(stat) \
52 ENA_STAT_ENTRY(stat, rx)
54 #define ENA_STAT_TX_ENTRY(stat) \
55 ENA_STAT_ENTRY(stat, tx)
57 #define ENA_STAT_ENI_ENTRY(stat) \
58 ENA_STAT_ENTRY(stat, eni)
60 #define ENA_STAT_GLOBAL_ENTRY(stat) \
61 ENA_STAT_ENTRY(stat, dev)
63 /* Device arguments */
64 #define ENA_DEVARG_LARGE_LLQ_HDR "large_llq_hdr"
67 * Each rte_memzone should have unique name.
68 * To satisfy it, count number of allocation and add it to name.
70 rte_atomic64_t ena_alloc_cnt;
72 static const struct ena_stats ena_stats_global_strings[] = {
73 ENA_STAT_GLOBAL_ENTRY(wd_expired),
74 ENA_STAT_GLOBAL_ENTRY(dev_start),
75 ENA_STAT_GLOBAL_ENTRY(dev_stop),
76 ENA_STAT_GLOBAL_ENTRY(tx_drops),
79 static const struct ena_stats ena_stats_eni_strings[] = {
80 ENA_STAT_ENI_ENTRY(bw_in_allowance_exceeded),
81 ENA_STAT_ENI_ENTRY(bw_out_allowance_exceeded),
82 ENA_STAT_ENI_ENTRY(pps_allowance_exceeded),
83 ENA_STAT_ENI_ENTRY(conntrack_allowance_exceeded),
84 ENA_STAT_ENI_ENTRY(linklocal_allowance_exceeded),
87 static const struct ena_stats ena_stats_tx_strings[] = {
88 ENA_STAT_TX_ENTRY(cnt),
89 ENA_STAT_TX_ENTRY(bytes),
90 ENA_STAT_TX_ENTRY(prepare_ctx_err),
91 ENA_STAT_TX_ENTRY(tx_poll),
92 ENA_STAT_TX_ENTRY(doorbells),
93 ENA_STAT_TX_ENTRY(bad_req_id),
94 ENA_STAT_TX_ENTRY(available_desc),
95 ENA_STAT_TX_ENTRY(missed_tx),
98 static const struct ena_stats ena_stats_rx_strings[] = {
99 ENA_STAT_RX_ENTRY(cnt),
100 ENA_STAT_RX_ENTRY(bytes),
101 ENA_STAT_RX_ENTRY(refill_partial),
102 ENA_STAT_RX_ENTRY(l3_csum_bad),
103 ENA_STAT_RX_ENTRY(l4_csum_bad),
104 ENA_STAT_RX_ENTRY(l4_csum_good),
105 ENA_STAT_RX_ENTRY(mbuf_alloc_fail),
106 ENA_STAT_RX_ENTRY(bad_desc_num),
107 ENA_STAT_RX_ENTRY(bad_req_id),
110 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
111 #define ENA_STATS_ARRAY_ENI ARRAY_SIZE(ena_stats_eni_strings)
112 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
113 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
115 #define QUEUE_OFFLOADS (RTE_ETH_TX_OFFLOAD_TCP_CKSUM |\
116 RTE_ETH_TX_OFFLOAD_UDP_CKSUM |\
117 RTE_ETH_TX_OFFLOAD_IPV4_CKSUM |\
118 RTE_ETH_TX_OFFLOAD_TCP_TSO)
119 #define MBUF_OFFLOADS (RTE_MBUF_F_TX_L4_MASK |\
120 RTE_MBUF_F_TX_IP_CKSUM |\
121 RTE_MBUF_F_TX_TCP_SEG)
123 /** Vendor ID used by Amazon devices */
124 #define PCI_VENDOR_ID_AMAZON 0x1D0F
125 /** Amazon devices */
126 #define PCI_DEVICE_ID_ENA_VF 0xEC20
127 #define PCI_DEVICE_ID_ENA_VF_RSERV0 0xEC21
129 #define ENA_TX_OFFLOAD_MASK (RTE_MBUF_F_TX_L4_MASK | \
130 RTE_MBUF_F_TX_IPV6 | \
131 RTE_MBUF_F_TX_IPV4 | \
132 RTE_MBUF_F_TX_IP_CKSUM | \
133 RTE_MBUF_F_TX_TCP_SEG)
135 #define ENA_TX_OFFLOAD_NOTSUP_MASK \
136 (RTE_MBUF_F_TX_OFFLOAD_MASK ^ ENA_TX_OFFLOAD_MASK)
138 /** HW specific offloads capabilities. */
139 /* IPv4 checksum offload. */
140 #define ENA_L3_IPV4_CSUM 0x0001
141 /* TCP/UDP checksum offload for IPv4 packets. */
142 #define ENA_L4_IPV4_CSUM 0x0002
143 /* TCP/UDP checksum offload for IPv4 packets with pseudo header checksum. */
144 #define ENA_L4_IPV4_CSUM_PARTIAL 0x0004
145 /* TCP/UDP checksum offload for IPv6 packets. */
146 #define ENA_L4_IPV6_CSUM 0x0008
147 /* TCP/UDP checksum offload for IPv6 packets with pseudo header checksum. */
148 #define ENA_L4_IPV6_CSUM_PARTIAL 0x0010
149 /* TSO support for IPv4 packets. */
150 #define ENA_IPV4_TSO 0x0020
152 /* Device supports setting RSS hash. */
153 #define ENA_RX_RSS_HASH 0x0040
155 static const struct rte_pci_id pci_id_ena_map[] = {
156 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF) },
157 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF_RSERV0) },
161 static struct ena_aenq_handlers aenq_handlers;
163 static int ena_device_init(struct ena_com_dev *ena_dev,
164 struct rte_pci_device *pdev,
165 struct ena_com_dev_get_features_ctx *get_feat_ctx,
167 static int ena_dev_configure(struct rte_eth_dev *dev);
168 static void ena_tx_map_mbuf(struct ena_ring *tx_ring,
169 struct ena_tx_buffer *tx_info,
170 struct rte_mbuf *mbuf,
172 uint16_t *header_len);
173 static int ena_xmit_mbuf(struct ena_ring *tx_ring, struct rte_mbuf *mbuf);
174 static void ena_tx_cleanup(struct ena_ring *tx_ring);
175 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
177 static uint16_t eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
179 static int ena_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
180 uint16_t nb_desc, unsigned int socket_id,
181 const struct rte_eth_txconf *tx_conf);
182 static int ena_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
183 uint16_t nb_desc, unsigned int socket_id,
184 const struct rte_eth_rxconf *rx_conf,
185 struct rte_mempool *mp);
186 static inline void ena_init_rx_mbuf(struct rte_mbuf *mbuf, uint16_t len);
187 static struct rte_mbuf *ena_rx_mbuf(struct ena_ring *rx_ring,
188 struct ena_com_rx_buf_info *ena_bufs,
190 uint16_t *next_to_clean,
192 static uint16_t eth_ena_recv_pkts(void *rx_queue,
193 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
194 static int ena_add_single_rx_desc(struct ena_com_io_sq *io_sq,
195 struct rte_mbuf *mbuf, uint16_t id);
196 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count);
197 static void ena_init_rings(struct ena_adapter *adapter,
198 bool disable_meta_caching);
199 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
200 static int ena_start(struct rte_eth_dev *dev);
201 static int ena_stop(struct rte_eth_dev *dev);
202 static int ena_close(struct rte_eth_dev *dev);
203 static int ena_dev_reset(struct rte_eth_dev *dev);
204 static int ena_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
205 static void ena_rx_queue_release_all(struct rte_eth_dev *dev);
206 static void ena_tx_queue_release_all(struct rte_eth_dev *dev);
207 static void ena_rx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
208 static void ena_tx_queue_release(struct rte_eth_dev *dev, uint16_t qid);
209 static void ena_rx_queue_release_bufs(struct ena_ring *ring);
210 static void ena_tx_queue_release_bufs(struct ena_ring *ring);
211 static int ena_link_update(struct rte_eth_dev *dev,
212 int wait_to_complete);
213 static int ena_create_io_queue(struct rte_eth_dev *dev, struct ena_ring *ring);
214 static void ena_queue_stop(struct ena_ring *ring);
215 static void ena_queue_stop_all(struct rte_eth_dev *dev,
216 enum ena_ring_type ring_type);
217 static int ena_queue_start(struct rte_eth_dev *dev, struct ena_ring *ring);
218 static int ena_queue_start_all(struct rte_eth_dev *dev,
219 enum ena_ring_type ring_type);
220 static void ena_stats_restart(struct rte_eth_dev *dev);
221 static uint64_t ena_get_rx_port_offloads(struct ena_adapter *adapter);
222 static uint64_t ena_get_tx_port_offloads(struct ena_adapter *adapter);
223 static uint64_t ena_get_rx_queue_offloads(struct ena_adapter *adapter);
224 static uint64_t ena_get_tx_queue_offloads(struct ena_adapter *adapter);
225 static int ena_infos_get(struct rte_eth_dev *dev,
226 struct rte_eth_dev_info *dev_info);
227 static void ena_interrupt_handler_rte(void *cb_arg);
228 static void ena_timer_wd_callback(struct rte_timer *timer, void *arg);
229 static void ena_destroy_device(struct rte_eth_dev *eth_dev);
230 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev);
231 static int ena_xstats_get_names(struct rte_eth_dev *dev,
232 struct rte_eth_xstat_name *xstats_names,
234 static int ena_xstats_get(struct rte_eth_dev *dev,
235 struct rte_eth_xstat *stats,
237 static int ena_xstats_get_by_id(struct rte_eth_dev *dev,
241 static int ena_process_bool_devarg(const char *key,
244 static int ena_parse_devargs(struct ena_adapter *adapter,
245 struct rte_devargs *devargs);
246 static int ena_copy_eni_stats(struct ena_adapter *adapter);
247 static int ena_setup_rx_intr(struct rte_eth_dev *dev);
248 static int ena_rx_queue_intr_enable(struct rte_eth_dev *dev,
250 static int ena_rx_queue_intr_disable(struct rte_eth_dev *dev,
253 static const struct eth_dev_ops ena_dev_ops = {
254 .dev_configure = ena_dev_configure,
255 .dev_infos_get = ena_infos_get,
256 .rx_queue_setup = ena_rx_queue_setup,
257 .tx_queue_setup = ena_tx_queue_setup,
258 .dev_start = ena_start,
259 .dev_stop = ena_stop,
260 .link_update = ena_link_update,
261 .stats_get = ena_stats_get,
262 .xstats_get_names = ena_xstats_get_names,
263 .xstats_get = ena_xstats_get,
264 .xstats_get_by_id = ena_xstats_get_by_id,
265 .mtu_set = ena_mtu_set,
266 .rx_queue_release = ena_rx_queue_release,
267 .tx_queue_release = ena_tx_queue_release,
268 .dev_close = ena_close,
269 .dev_reset = ena_dev_reset,
270 .reta_update = ena_rss_reta_update,
271 .reta_query = ena_rss_reta_query,
272 .rx_queue_intr_enable = ena_rx_queue_intr_enable,
273 .rx_queue_intr_disable = ena_rx_queue_intr_disable,
274 .rss_hash_update = ena_rss_hash_update,
275 .rss_hash_conf_get = ena_rss_hash_conf_get,
278 static inline void ena_rx_mbuf_prepare(struct ena_ring *rx_ring,
279 struct rte_mbuf *mbuf,
280 struct ena_com_rx_ctx *ena_rx_ctx,
283 struct ena_stats_rx *rx_stats = &rx_ring->rx_stats;
284 uint64_t ol_flags = 0;
285 uint32_t packet_type = 0;
287 if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP)
288 packet_type |= RTE_PTYPE_L4_TCP;
289 else if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)
290 packet_type |= RTE_PTYPE_L4_UDP;
292 if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) {
293 packet_type |= RTE_PTYPE_L3_IPV4;
294 if (unlikely(ena_rx_ctx->l3_csum_err)) {
295 ++rx_stats->l3_csum_bad;
296 ol_flags |= RTE_MBUF_F_RX_IP_CKSUM_BAD;
298 ol_flags |= RTE_MBUF_F_RX_IP_CKSUM_GOOD;
300 } else if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV6) {
301 packet_type |= RTE_PTYPE_L3_IPV6;
304 if (!ena_rx_ctx->l4_csum_checked || ena_rx_ctx->frag) {
305 ol_flags |= RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN;
307 if (unlikely(ena_rx_ctx->l4_csum_err)) {
308 ++rx_stats->l4_csum_bad;
309 ol_flags |= RTE_MBUF_F_RX_L4_CKSUM_BAD;
311 ++rx_stats->l4_csum_good;
312 ol_flags |= RTE_MBUF_F_RX_L4_CKSUM_GOOD;
317 likely((packet_type & ENA_PTYPE_HAS_HASH) && !ena_rx_ctx->frag)) {
318 ol_flags |= RTE_MBUF_F_RX_RSS_HASH;
319 mbuf->hash.rss = ena_rx_ctx->hash;
322 mbuf->ol_flags = ol_flags;
323 mbuf->packet_type = packet_type;
326 static inline void ena_tx_mbuf_prepare(struct rte_mbuf *mbuf,
327 struct ena_com_tx_ctx *ena_tx_ctx,
328 uint64_t queue_offloads,
329 bool disable_meta_caching)
331 struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
333 if ((mbuf->ol_flags & MBUF_OFFLOADS) &&
334 (queue_offloads & QUEUE_OFFLOADS)) {
335 /* check if TSO is required */
336 if ((mbuf->ol_flags & RTE_MBUF_F_TX_TCP_SEG) &&
337 (queue_offloads & RTE_ETH_TX_OFFLOAD_TCP_TSO)) {
338 ena_tx_ctx->tso_enable = true;
340 ena_meta->l4_hdr_len = GET_L4_HDR_LEN(mbuf);
343 /* check if L3 checksum is needed */
344 if ((mbuf->ol_flags & RTE_MBUF_F_TX_IP_CKSUM) &&
345 (queue_offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM))
346 ena_tx_ctx->l3_csum_enable = true;
348 if (mbuf->ol_flags & RTE_MBUF_F_TX_IPV6) {
349 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
351 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
353 /* set don't fragment (DF) flag */
354 if (mbuf->packet_type &
355 (RTE_PTYPE_L4_NONFRAG
356 | RTE_PTYPE_INNER_L4_NONFRAG))
357 ena_tx_ctx->df = true;
360 /* check if L4 checksum is needed */
361 if (((mbuf->ol_flags & RTE_MBUF_F_TX_L4_MASK) == RTE_MBUF_F_TX_TCP_CKSUM) &&
362 (queue_offloads & RTE_ETH_TX_OFFLOAD_TCP_CKSUM)) {
363 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
364 ena_tx_ctx->l4_csum_enable = true;
365 } else if (((mbuf->ol_flags & RTE_MBUF_F_TX_L4_MASK) ==
366 RTE_MBUF_F_TX_UDP_CKSUM) &&
367 (queue_offloads & RTE_ETH_TX_OFFLOAD_UDP_CKSUM)) {
368 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
369 ena_tx_ctx->l4_csum_enable = true;
371 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
372 ena_tx_ctx->l4_csum_enable = false;
375 ena_meta->mss = mbuf->tso_segsz;
376 ena_meta->l3_hdr_len = mbuf->l3_len;
377 ena_meta->l3_hdr_offset = mbuf->l2_len;
379 ena_tx_ctx->meta_valid = true;
380 } else if (disable_meta_caching) {
381 memset(ena_meta, 0, sizeof(*ena_meta));
382 ena_tx_ctx->meta_valid = true;
384 ena_tx_ctx->meta_valid = false;
388 static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id)
390 struct ena_tx_buffer *tx_info = NULL;
392 if (likely(req_id < tx_ring->ring_size)) {
393 tx_info = &tx_ring->tx_buffer_info[req_id];
394 if (likely(tx_info->mbuf))
399 PMD_TX_LOG(ERR, "tx_info doesn't have valid mbuf\n");
401 PMD_TX_LOG(ERR, "Invalid req_id: %hu\n", req_id);
403 /* Trigger device reset */
404 ++tx_ring->tx_stats.bad_req_id;
405 tx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_TX_REQ_ID;
406 tx_ring->adapter->trigger_reset = true;
410 static void ena_config_host_info(struct ena_com_dev *ena_dev)
412 struct ena_admin_host_info *host_info;
415 /* Allocate only the host info */
416 rc = ena_com_allocate_host_info(ena_dev);
418 PMD_DRV_LOG(ERR, "Cannot allocate host info\n");
422 host_info = ena_dev->host_attr.host_info;
424 host_info->os_type = ENA_ADMIN_OS_DPDK;
425 host_info->kernel_ver = RTE_VERSION;
426 strlcpy((char *)host_info->kernel_ver_str, rte_version(),
427 sizeof(host_info->kernel_ver_str));
428 host_info->os_dist = RTE_VERSION;
429 strlcpy((char *)host_info->os_dist_str, rte_version(),
430 sizeof(host_info->os_dist_str));
431 host_info->driver_version =
432 (DRV_MODULE_VER_MAJOR) |
433 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
434 (DRV_MODULE_VER_SUBMINOR <<
435 ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
436 host_info->num_cpus = rte_lcore_count();
438 host_info->driver_supported_features =
439 ENA_ADMIN_HOST_INFO_RX_OFFSET_MASK |
440 ENA_ADMIN_HOST_INFO_RSS_CONFIGURABLE_FUNCTION_KEY_MASK;
442 rc = ena_com_set_host_attributes(ena_dev);
444 if (rc == -ENA_COM_UNSUPPORTED)
445 PMD_DRV_LOG(WARNING, "Cannot set host attributes\n");
447 PMD_DRV_LOG(ERR, "Cannot set host attributes\n");
455 ena_com_delete_host_info(ena_dev);
458 /* This function calculates the number of xstats based on the current config */
459 static unsigned int ena_xstats_calc_num(struct rte_eth_dev_data *data)
461 return ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENI +
462 (data->nb_tx_queues * ENA_STATS_ARRAY_TX) +
463 (data->nb_rx_queues * ENA_STATS_ARRAY_RX);
466 static void ena_config_debug_area(struct ena_adapter *adapter)
471 ss_count = ena_xstats_calc_num(adapter->edev_data);
473 /* allocate 32 bytes for each string and 64bit for the value */
474 debug_area_size = ss_count * ETH_GSTRING_LEN + sizeof(u64) * ss_count;
476 rc = ena_com_allocate_debug_area(&adapter->ena_dev, debug_area_size);
478 PMD_DRV_LOG(ERR, "Cannot allocate debug area\n");
482 rc = ena_com_set_host_attributes(&adapter->ena_dev);
484 if (rc == -ENA_COM_UNSUPPORTED)
485 PMD_DRV_LOG(WARNING, "Cannot set host attributes\n");
487 PMD_DRV_LOG(ERR, "Cannot set host attributes\n");
494 ena_com_delete_debug_area(&adapter->ena_dev);
497 static int ena_close(struct rte_eth_dev *dev)
499 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
500 struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
501 struct ena_adapter *adapter = dev->data->dev_private;
504 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
507 if (adapter->state == ENA_ADAPTER_STATE_RUNNING)
509 adapter->state = ENA_ADAPTER_STATE_CLOSED;
511 ena_rx_queue_release_all(dev);
512 ena_tx_queue_release_all(dev);
514 rte_free(adapter->drv_stats);
515 adapter->drv_stats = NULL;
517 rte_intr_disable(intr_handle);
518 rte_intr_callback_unregister(intr_handle,
519 ena_interrupt_handler_rte,
523 * MAC is not allocated dynamically. Setting NULL should prevent from
524 * release of the resource in the rte_eth_dev_release_port().
526 dev->data->mac_addrs = NULL;
532 ena_dev_reset(struct rte_eth_dev *dev)
536 /* Cannot release memory in secondary process */
537 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
538 PMD_DRV_LOG(WARNING, "dev_reset not supported in secondary.\n");
542 ena_destroy_device(dev);
543 rc = eth_ena_dev_init(dev);
545 PMD_INIT_LOG(CRIT, "Cannot initialize device\n");
550 static void ena_rx_queue_release_all(struct rte_eth_dev *dev)
552 int nb_queues = dev->data->nb_rx_queues;
555 for (i = 0; i < nb_queues; i++)
556 ena_rx_queue_release(dev, i);
559 static void ena_tx_queue_release_all(struct rte_eth_dev *dev)
561 int nb_queues = dev->data->nb_tx_queues;
564 for (i = 0; i < nb_queues; i++)
565 ena_tx_queue_release(dev, i);
568 static void ena_rx_queue_release(struct rte_eth_dev *dev, uint16_t qid)
570 struct ena_ring *ring = dev->data->rx_queues[qid];
572 /* Free ring resources */
573 rte_free(ring->rx_buffer_info);
574 ring->rx_buffer_info = NULL;
576 rte_free(ring->rx_refill_buffer);
577 ring->rx_refill_buffer = NULL;
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 rte_free(ring->push_buf_intermediate_buf);
595 rte_free(ring->tx_buffer_info);
597 rte_free(ring->empty_tx_reqs);
599 ring->empty_tx_reqs = NULL;
600 ring->tx_buffer_info = NULL;
601 ring->push_buf_intermediate_buf = NULL;
603 ring->configured = 0;
605 PMD_DRV_LOG(NOTICE, "Tx queue %d:%d released\n",
606 ring->port_id, ring->id);
609 static void ena_rx_queue_release_bufs(struct ena_ring *ring)
613 for (i = 0; i < ring->ring_size; ++i) {
614 struct ena_rx_buffer *rx_info = &ring->rx_buffer_info[i];
616 rte_mbuf_raw_free(rx_info->mbuf);
617 rx_info->mbuf = NULL;
622 static void ena_tx_queue_release_bufs(struct ena_ring *ring)
626 for (i = 0; i < ring->ring_size; ++i) {
627 struct ena_tx_buffer *tx_buf = &ring->tx_buffer_info[i];
630 rte_pktmbuf_free(tx_buf->mbuf);
636 static int ena_link_update(struct rte_eth_dev *dev,
637 __rte_unused int wait_to_complete)
639 struct rte_eth_link *link = &dev->data->dev_link;
640 struct ena_adapter *adapter = dev->data->dev_private;
642 link->link_status = adapter->link_status ? RTE_ETH_LINK_UP : RTE_ETH_LINK_DOWN;
643 link->link_speed = RTE_ETH_SPEED_NUM_NONE;
644 link->link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
649 static int ena_queue_start_all(struct rte_eth_dev *dev,
650 enum ena_ring_type ring_type)
652 struct ena_adapter *adapter = dev->data->dev_private;
653 struct ena_ring *queues = NULL;
658 if (ring_type == ENA_RING_TYPE_RX) {
659 queues = adapter->rx_ring;
660 nb_queues = dev->data->nb_rx_queues;
662 queues = adapter->tx_ring;
663 nb_queues = dev->data->nb_tx_queues;
665 for (i = 0; i < nb_queues; i++) {
666 if (queues[i].configured) {
667 if (ring_type == ENA_RING_TYPE_RX) {
669 dev->data->rx_queues[i] == &queues[i],
670 "Inconsistent state of Rx queues\n");
673 dev->data->tx_queues[i] == &queues[i],
674 "Inconsistent state of Tx queues\n");
677 rc = ena_queue_start(dev, &queues[i]);
681 "Failed to start queue[%d] of type(%d)\n",
692 if (queues[i].configured)
693 ena_queue_stop(&queues[i]);
698 static int ena_check_valid_conf(struct ena_adapter *adapter)
700 uint32_t mtu = adapter->edev_data->mtu;
702 if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
704 "Unsupported MTU of %d. Max MTU: %d, min MTU: %d\n",
705 mtu, adapter->max_mtu, ENA_MIN_MTU);
706 return ENA_COM_UNSUPPORTED;
713 ena_calc_io_queue_size(struct ena_calc_queue_size_ctx *ctx,
714 bool use_large_llq_hdr)
716 struct ena_admin_feature_llq_desc *llq = &ctx->get_feat_ctx->llq;
717 struct ena_com_dev *ena_dev = ctx->ena_dev;
718 uint32_t max_tx_queue_size;
719 uint32_t max_rx_queue_size;
721 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
722 struct ena_admin_queue_ext_feature_fields *max_queue_ext =
723 &ctx->get_feat_ctx->max_queue_ext.max_queue_ext;
724 max_rx_queue_size = RTE_MIN(max_queue_ext->max_rx_cq_depth,
725 max_queue_ext->max_rx_sq_depth);
726 max_tx_queue_size = max_queue_ext->max_tx_cq_depth;
728 if (ena_dev->tx_mem_queue_type ==
729 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
730 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
733 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
734 max_queue_ext->max_tx_sq_depth);
737 ctx->max_rx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
738 max_queue_ext->max_per_packet_rx_descs);
739 ctx->max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
740 max_queue_ext->max_per_packet_tx_descs);
742 struct ena_admin_queue_feature_desc *max_queues =
743 &ctx->get_feat_ctx->max_queues;
744 max_rx_queue_size = RTE_MIN(max_queues->max_cq_depth,
745 max_queues->max_sq_depth);
746 max_tx_queue_size = max_queues->max_cq_depth;
748 if (ena_dev->tx_mem_queue_type ==
749 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
750 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
753 max_tx_queue_size = RTE_MIN(max_tx_queue_size,
754 max_queues->max_sq_depth);
757 ctx->max_rx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
758 max_queues->max_packet_rx_descs);
759 ctx->max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
760 max_queues->max_packet_tx_descs);
763 /* Round down to the nearest power of 2 */
764 max_rx_queue_size = rte_align32prevpow2(max_rx_queue_size);
765 max_tx_queue_size = rte_align32prevpow2(max_tx_queue_size);
767 if (use_large_llq_hdr) {
768 if ((llq->entry_size_ctrl_supported &
769 ENA_ADMIN_LIST_ENTRY_SIZE_256B) &&
770 (ena_dev->tx_mem_queue_type ==
771 ENA_ADMIN_PLACEMENT_POLICY_DEV)) {
772 max_tx_queue_size /= 2;
774 "Forcing large headers and decreasing maximum Tx queue size to %d\n",
778 "Forcing large headers failed: LLQ is disabled or device does not support large headers\n");
782 if (unlikely(max_rx_queue_size == 0 || max_tx_queue_size == 0)) {
783 PMD_INIT_LOG(ERR, "Invalid queue size\n");
787 ctx->max_tx_queue_size = max_tx_queue_size;
788 ctx->max_rx_queue_size = max_rx_queue_size;
793 static void ena_stats_restart(struct rte_eth_dev *dev)
795 struct ena_adapter *adapter = dev->data->dev_private;
797 rte_atomic64_init(&adapter->drv_stats->ierrors);
798 rte_atomic64_init(&adapter->drv_stats->oerrors);
799 rte_atomic64_init(&adapter->drv_stats->rx_nombuf);
800 adapter->drv_stats->rx_drops = 0;
803 static int ena_stats_get(struct rte_eth_dev *dev,
804 struct rte_eth_stats *stats)
806 struct ena_admin_basic_stats ena_stats;
807 struct ena_adapter *adapter = dev->data->dev_private;
808 struct ena_com_dev *ena_dev = &adapter->ena_dev;
813 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
816 memset(&ena_stats, 0, sizeof(ena_stats));
818 rte_spinlock_lock(&adapter->admin_lock);
819 rc = ena_com_get_dev_basic_stats(ena_dev, &ena_stats);
820 rte_spinlock_unlock(&adapter->admin_lock);
822 PMD_DRV_LOG(ERR, "Could not retrieve statistics from ENA\n");
826 /* Set of basic statistics from ENA */
827 stats->ipackets = __MERGE_64B_H_L(ena_stats.rx_pkts_high,
828 ena_stats.rx_pkts_low);
829 stats->opackets = __MERGE_64B_H_L(ena_stats.tx_pkts_high,
830 ena_stats.tx_pkts_low);
831 stats->ibytes = __MERGE_64B_H_L(ena_stats.rx_bytes_high,
832 ena_stats.rx_bytes_low);
833 stats->obytes = __MERGE_64B_H_L(ena_stats.tx_bytes_high,
834 ena_stats.tx_bytes_low);
836 /* Driver related stats */
837 stats->imissed = adapter->drv_stats->rx_drops;
838 stats->ierrors = rte_atomic64_read(&adapter->drv_stats->ierrors);
839 stats->oerrors = rte_atomic64_read(&adapter->drv_stats->oerrors);
840 stats->rx_nombuf = rte_atomic64_read(&adapter->drv_stats->rx_nombuf);
842 max_rings_stats = RTE_MIN(dev->data->nb_rx_queues,
843 RTE_ETHDEV_QUEUE_STAT_CNTRS);
844 for (i = 0; i < max_rings_stats; ++i) {
845 struct ena_stats_rx *rx_stats = &adapter->rx_ring[i].rx_stats;
847 stats->q_ibytes[i] = rx_stats->bytes;
848 stats->q_ipackets[i] = rx_stats->cnt;
849 stats->q_errors[i] = rx_stats->bad_desc_num +
850 rx_stats->bad_req_id;
853 max_rings_stats = RTE_MIN(dev->data->nb_tx_queues,
854 RTE_ETHDEV_QUEUE_STAT_CNTRS);
855 for (i = 0; i < max_rings_stats; ++i) {
856 struct ena_stats_tx *tx_stats = &adapter->tx_ring[i].tx_stats;
858 stats->q_obytes[i] = tx_stats->bytes;
859 stats->q_opackets[i] = tx_stats->cnt;
865 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
867 struct ena_adapter *adapter;
868 struct ena_com_dev *ena_dev;
871 ena_assert_msg(dev->data != NULL, "Uninitialized device\n");
872 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device\n");
873 adapter = dev->data->dev_private;
875 ena_dev = &adapter->ena_dev;
876 ena_assert_msg(ena_dev != NULL, "Uninitialized device\n");
878 if (mtu > adapter->max_mtu || mtu < ENA_MIN_MTU) {
880 "Invalid MTU setting. New MTU: %d, max MTU: %d, min MTU: %d\n",
881 mtu, adapter->max_mtu, ENA_MIN_MTU);
885 rc = ena_com_set_dev_mtu(ena_dev, mtu);
887 PMD_DRV_LOG(ERR, "Could not set MTU: %d\n", mtu);
889 PMD_DRV_LOG(NOTICE, "MTU set to: %d\n", mtu);
894 static int ena_start(struct rte_eth_dev *dev)
896 struct ena_adapter *adapter = dev->data->dev_private;
900 /* Cannot allocate memory in secondary process */
901 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
902 PMD_DRV_LOG(WARNING, "dev_start not supported in secondary.\n");
906 rc = ena_check_valid_conf(adapter);
910 rc = ena_setup_rx_intr(dev);
914 rc = ena_queue_start_all(dev, ENA_RING_TYPE_RX);
918 rc = ena_queue_start_all(dev, ENA_RING_TYPE_TX);
922 if (adapter->edev_data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) {
923 rc = ena_rss_configure(adapter);
928 ena_stats_restart(dev);
930 adapter->timestamp_wd = rte_get_timer_cycles();
931 adapter->keep_alive_timeout = ENA_DEVICE_KALIVE_TIMEOUT;
933 ticks = rte_get_timer_hz();
934 rte_timer_reset(&adapter->timer_wd, ticks, PERIODICAL, rte_lcore_id(),
935 ena_timer_wd_callback, dev);
937 ++adapter->dev_stats.dev_start;
938 adapter->state = ENA_ADAPTER_STATE_RUNNING;
943 ena_queue_stop_all(dev, ENA_RING_TYPE_TX);
945 ena_queue_stop_all(dev, ENA_RING_TYPE_RX);
949 static int ena_stop(struct rte_eth_dev *dev)
951 struct ena_adapter *adapter = dev->data->dev_private;
952 struct ena_com_dev *ena_dev = &adapter->ena_dev;
953 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
954 struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
957 /* Cannot free memory in secondary process */
958 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
959 PMD_DRV_LOG(WARNING, "dev_stop not supported in secondary.\n");
963 rte_timer_stop_sync(&adapter->timer_wd);
964 ena_queue_stop_all(dev, ENA_RING_TYPE_TX);
965 ena_queue_stop_all(dev, ENA_RING_TYPE_RX);
967 if (adapter->trigger_reset) {
968 rc = ena_com_dev_reset(ena_dev, adapter->reset_reason);
970 PMD_DRV_LOG(ERR, "Device reset failed, rc: %d\n", rc);
973 rte_intr_disable(intr_handle);
975 rte_intr_efd_disable(intr_handle);
977 /* Cleanup vector list */
978 rte_intr_vec_list_free(intr_handle);
980 rte_intr_enable(intr_handle);
982 ++adapter->dev_stats.dev_stop;
983 adapter->state = ENA_ADAPTER_STATE_STOPPED;
984 dev->data->dev_started = 0;
989 static int ena_create_io_queue(struct rte_eth_dev *dev, struct ena_ring *ring)
991 struct ena_adapter *adapter = ring->adapter;
992 struct ena_com_dev *ena_dev = &adapter->ena_dev;
993 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
994 struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
995 struct ena_com_create_io_ctx ctx =
996 /* policy set to _HOST just to satisfy icc compiler */
997 { ENA_ADMIN_PLACEMENT_POLICY_HOST,
1003 ctx.msix_vector = -1;
1004 if (ring->type == ENA_RING_TYPE_TX) {
1005 ena_qid = ENA_IO_TXQ_IDX(ring->id);
1006 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
1007 ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
1008 for (i = 0; i < ring->ring_size; i++)
1009 ring->empty_tx_reqs[i] = i;
1011 ena_qid = ENA_IO_RXQ_IDX(ring->id);
1012 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
1013 if (rte_intr_dp_is_en(intr_handle))
1015 rte_intr_vec_list_index_get(intr_handle,
1018 for (i = 0; i < ring->ring_size; i++)
1019 ring->empty_rx_reqs[i] = i;
1021 ctx.queue_size = ring->ring_size;
1023 ctx.numa_node = ring->numa_socket_id;
1025 rc = ena_com_create_io_queue(ena_dev, &ctx);
1028 "Failed to create IO queue[%d] (qid:%d), rc: %d\n",
1029 ring->id, ena_qid, rc);
1033 rc = ena_com_get_io_handlers(ena_dev, ena_qid,
1034 &ring->ena_com_io_sq,
1035 &ring->ena_com_io_cq);
1038 "Failed to get IO queue[%d] handlers, rc: %d\n",
1040 ena_com_destroy_io_queue(ena_dev, ena_qid);
1044 if (ring->type == ENA_RING_TYPE_TX)
1045 ena_com_update_numa_node(ring->ena_com_io_cq, ctx.numa_node);
1047 /* Start with Rx interrupts being masked. */
1048 if (ring->type == ENA_RING_TYPE_RX && rte_intr_dp_is_en(intr_handle))
1049 ena_rx_queue_intr_disable(dev, ring->id);
1054 static void ena_queue_stop(struct ena_ring *ring)
1056 struct ena_com_dev *ena_dev = &ring->adapter->ena_dev;
1058 if (ring->type == ENA_RING_TYPE_RX) {
1059 ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(ring->id));
1060 ena_rx_queue_release_bufs(ring);
1062 ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(ring->id));
1063 ena_tx_queue_release_bufs(ring);
1067 static void ena_queue_stop_all(struct rte_eth_dev *dev,
1068 enum ena_ring_type ring_type)
1070 struct ena_adapter *adapter = dev->data->dev_private;
1071 struct ena_ring *queues = NULL;
1072 uint16_t nb_queues, i;
1074 if (ring_type == ENA_RING_TYPE_RX) {
1075 queues = adapter->rx_ring;
1076 nb_queues = dev->data->nb_rx_queues;
1078 queues = adapter->tx_ring;
1079 nb_queues = dev->data->nb_tx_queues;
1082 for (i = 0; i < nb_queues; ++i)
1083 if (queues[i].configured)
1084 ena_queue_stop(&queues[i]);
1087 static int ena_queue_start(struct rte_eth_dev *dev, struct ena_ring *ring)
1091 ena_assert_msg(ring->configured == 1,
1092 "Trying to start unconfigured queue\n");
1094 rc = ena_create_io_queue(dev, ring);
1096 PMD_INIT_LOG(ERR, "Failed to create IO queue\n");
1100 ring->next_to_clean = 0;
1101 ring->next_to_use = 0;
1103 if (ring->type == ENA_RING_TYPE_TX) {
1104 ring->tx_stats.available_desc =
1105 ena_com_free_q_entries(ring->ena_com_io_sq);
1109 bufs_num = ring->ring_size - 1;
1110 rc = ena_populate_rx_queue(ring, bufs_num);
1111 if (rc != bufs_num) {
1112 ena_com_destroy_io_queue(&ring->adapter->ena_dev,
1113 ENA_IO_RXQ_IDX(ring->id));
1114 PMD_INIT_LOG(ERR, "Failed to populate Rx ring\n");
1115 return ENA_COM_FAULT;
1117 /* Flush per-core RX buffers pools cache as they can be used on other
1120 rte_mempool_cache_flush(NULL, ring->mb_pool);
1125 static int ena_tx_queue_setup(struct rte_eth_dev *dev,
1128 unsigned int socket_id,
1129 const struct rte_eth_txconf *tx_conf)
1131 struct ena_ring *txq = NULL;
1132 struct ena_adapter *adapter = dev->data->dev_private;
1134 uint16_t dyn_thresh;
1136 txq = &adapter->tx_ring[queue_idx];
1138 if (txq->configured) {
1140 "API violation. Queue[%d] is already configured\n",
1142 return ENA_COM_FAULT;
1145 if (!rte_is_power_of_2(nb_desc)) {
1147 "Unsupported size of Tx queue: %d is not a power of 2.\n",
1152 if (nb_desc > adapter->max_tx_ring_size) {
1154 "Unsupported size of Tx queue (max size: %d)\n",
1155 adapter->max_tx_ring_size);
1159 txq->port_id = dev->data->port_id;
1160 txq->next_to_clean = 0;
1161 txq->next_to_use = 0;
1162 txq->ring_size = nb_desc;
1163 txq->size_mask = nb_desc - 1;
1164 txq->numa_socket_id = socket_id;
1165 txq->pkts_without_db = false;
1166 txq->last_cleanup_ticks = 0;
1168 txq->tx_buffer_info = rte_zmalloc_socket("txq->tx_buffer_info",
1169 sizeof(struct ena_tx_buffer) * txq->ring_size,
1170 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_socket("txq->empty_tx_reqs",
1179 sizeof(uint16_t) * txq->ring_size,
1180 RTE_CACHE_LINE_SIZE,
1182 if (!txq->empty_tx_reqs) {
1184 "Failed to allocate memory for empty Tx requests\n");
1185 rte_free(txq->tx_buffer_info);
1189 txq->push_buf_intermediate_buf =
1190 rte_zmalloc_socket("txq->push_buf_intermediate_buf",
1191 txq->tx_max_header_size,
1192 RTE_CACHE_LINE_SIZE,
1194 if (!txq->push_buf_intermediate_buf) {
1195 PMD_DRV_LOG(ERR, "Failed to alloc push buffer for LLQ\n");
1196 rte_free(txq->tx_buffer_info);
1197 rte_free(txq->empty_tx_reqs);
1201 for (i = 0; i < txq->ring_size; i++)
1202 txq->empty_tx_reqs[i] = i;
1204 txq->offloads = tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
1206 /* Check if caller provided the Tx cleanup threshold value. */
1207 if (tx_conf->tx_free_thresh != 0) {
1208 txq->tx_free_thresh = tx_conf->tx_free_thresh;
1210 dyn_thresh = txq->ring_size -
1211 txq->ring_size / ENA_REFILL_THRESH_DIVIDER;
1212 txq->tx_free_thresh = RTE_MAX(dyn_thresh,
1213 txq->ring_size - ENA_REFILL_THRESH_PACKET);
1216 txq->missing_tx_completion_threshold =
1217 RTE_MIN(txq->ring_size / 2, ENA_DEFAULT_MISSING_COMP);
1219 /* Store pointer to this queue in upper layer */
1220 txq->configured = 1;
1221 dev->data->tx_queues[queue_idx] = txq;
1226 static int ena_rx_queue_setup(struct rte_eth_dev *dev,
1229 unsigned int socket_id,
1230 const struct rte_eth_rxconf *rx_conf,
1231 struct rte_mempool *mp)
1233 struct ena_adapter *adapter = dev->data->dev_private;
1234 struct ena_ring *rxq = NULL;
1237 uint16_t dyn_thresh;
1239 rxq = &adapter->rx_ring[queue_idx];
1240 if (rxq->configured) {
1242 "API violation. Queue[%d] is already configured\n",
1244 return ENA_COM_FAULT;
1247 if (!rte_is_power_of_2(nb_desc)) {
1249 "Unsupported size of Rx queue: %d is not a power of 2.\n",
1254 if (nb_desc > adapter->max_rx_ring_size) {
1256 "Unsupported size of Rx queue (max size: %d)\n",
1257 adapter->max_rx_ring_size);
1261 /* ENA isn't supporting buffers smaller than 1400 bytes */
1262 buffer_size = rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM;
1263 if (buffer_size < ENA_RX_BUF_MIN_SIZE) {
1265 "Unsupported size of Rx buffer: %zu (min size: %d)\n",
1266 buffer_size, ENA_RX_BUF_MIN_SIZE);
1270 rxq->port_id = dev->data->port_id;
1271 rxq->next_to_clean = 0;
1272 rxq->next_to_use = 0;
1273 rxq->ring_size = nb_desc;
1274 rxq->size_mask = nb_desc - 1;
1275 rxq->numa_socket_id = socket_id;
1278 rxq->rx_buffer_info = rte_zmalloc_socket("rxq->buffer_info",
1279 sizeof(struct ena_rx_buffer) * nb_desc,
1280 RTE_CACHE_LINE_SIZE,
1282 if (!rxq->rx_buffer_info) {
1284 "Failed to allocate memory for Rx buffer info\n");
1288 rxq->rx_refill_buffer = rte_zmalloc_socket("rxq->rx_refill_buffer",
1289 sizeof(struct rte_mbuf *) * nb_desc,
1290 RTE_CACHE_LINE_SIZE,
1292 if (!rxq->rx_refill_buffer) {
1294 "Failed to allocate memory for Rx refill buffer\n");
1295 rte_free(rxq->rx_buffer_info);
1296 rxq->rx_buffer_info = NULL;
1300 rxq->empty_rx_reqs = rte_zmalloc_socket("rxq->empty_rx_reqs",
1301 sizeof(uint16_t) * nb_desc,
1302 RTE_CACHE_LINE_SIZE,
1304 if (!rxq->empty_rx_reqs) {
1306 "Failed to allocate memory for empty Rx requests\n");
1307 rte_free(rxq->rx_buffer_info);
1308 rxq->rx_buffer_info = NULL;
1309 rte_free(rxq->rx_refill_buffer);
1310 rxq->rx_refill_buffer = NULL;
1314 for (i = 0; i < nb_desc; i++)
1315 rxq->empty_rx_reqs[i] = i;
1317 rxq->offloads = rx_conf->offloads | dev->data->dev_conf.rxmode.offloads;
1319 if (rx_conf->rx_free_thresh != 0) {
1320 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
1322 dyn_thresh = rxq->ring_size / ENA_REFILL_THRESH_DIVIDER;
1323 rxq->rx_free_thresh = RTE_MIN(dyn_thresh,
1324 (uint16_t)(ENA_REFILL_THRESH_PACKET));
1327 /* Store pointer to this queue in upper layer */
1328 rxq->configured = 1;
1329 dev->data->rx_queues[queue_idx] = rxq;
1334 static int ena_add_single_rx_desc(struct ena_com_io_sq *io_sq,
1335 struct rte_mbuf *mbuf, uint16_t id)
1337 struct ena_com_buf ebuf;
1340 /* prepare physical address for DMA transaction */
1341 ebuf.paddr = mbuf->buf_iova + RTE_PKTMBUF_HEADROOM;
1342 ebuf.len = mbuf->buf_len - RTE_PKTMBUF_HEADROOM;
1344 /* pass resource to device */
1345 rc = ena_com_add_single_rx_desc(io_sq, &ebuf, id);
1346 if (unlikely(rc != 0))
1347 PMD_RX_LOG(WARNING, "Failed adding Rx desc\n");
1352 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count)
1356 uint16_t next_to_use = rxq->next_to_use;
1358 #ifdef RTE_ETHDEV_DEBUG_RX
1361 struct rte_mbuf **mbufs = rxq->rx_refill_buffer;
1363 if (unlikely(!count))
1366 #ifdef RTE_ETHDEV_DEBUG_RX
1367 in_use = rxq->ring_size - 1 -
1368 ena_com_free_q_entries(rxq->ena_com_io_sq);
1369 if (unlikely((in_use + count) >= rxq->ring_size))
1370 PMD_RX_LOG(ERR, "Bad Rx ring state\n");
1373 /* get resources for incoming packets */
1374 rc = rte_pktmbuf_alloc_bulk(rxq->mb_pool, mbufs, count);
1375 if (unlikely(rc < 0)) {
1376 rte_atomic64_inc(&rxq->adapter->drv_stats->rx_nombuf);
1377 ++rxq->rx_stats.mbuf_alloc_fail;
1378 PMD_RX_LOG(DEBUG, "There are not enough free buffers\n");
1382 for (i = 0; i < count; i++) {
1383 struct rte_mbuf *mbuf = mbufs[i];
1384 struct ena_rx_buffer *rx_info;
1386 if (likely((i + 4) < count))
1387 rte_prefetch0(mbufs[i + 4]);
1389 req_id = rxq->empty_rx_reqs[next_to_use];
1390 rx_info = &rxq->rx_buffer_info[req_id];
1392 rc = ena_add_single_rx_desc(rxq->ena_com_io_sq, mbuf, req_id);
1393 if (unlikely(rc != 0))
1396 rx_info->mbuf = mbuf;
1397 next_to_use = ENA_IDX_NEXT_MASKED(next_to_use, rxq->size_mask);
1400 if (unlikely(i < count)) {
1402 "Refilled Rx queue[%d] with only %d/%d buffers\n",
1404 rte_pktmbuf_free_bulk(&mbufs[i], count - i);
1405 ++rxq->rx_stats.refill_partial;
1408 /* When we submitted free resources to device... */
1409 if (likely(i > 0)) {
1410 /* ...let HW know that it can fill buffers with data. */
1411 ena_com_write_sq_doorbell(rxq->ena_com_io_sq);
1413 rxq->next_to_use = next_to_use;
1419 static int ena_device_init(struct ena_com_dev *ena_dev,
1420 struct rte_pci_device *pdev,
1421 struct ena_com_dev_get_features_ctx *get_feat_ctx,
1424 uint32_t aenq_groups;
1426 bool readless_supported;
1428 /* Initialize mmio registers */
1429 rc = ena_com_mmio_reg_read_request_init(ena_dev);
1431 PMD_DRV_LOG(ERR, "Failed to init MMIO read less\n");
1435 /* The PCIe configuration space revision id indicate if mmio reg
1438 readless_supported = !(pdev->id.class_id & ENA_MMIO_DISABLE_REG_READ);
1439 ena_com_set_mmio_read_mode(ena_dev, readless_supported);
1442 rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL);
1444 PMD_DRV_LOG(ERR, "Cannot reset device\n");
1445 goto err_mmio_read_less;
1448 /* check FW version */
1449 rc = ena_com_validate_version(ena_dev);
1451 PMD_DRV_LOG(ERR, "Device version is too low\n");
1452 goto err_mmio_read_less;
1455 ena_dev->dma_addr_bits = ena_com_get_dma_width(ena_dev);
1457 /* ENA device administration layer init */
1458 rc = ena_com_admin_init(ena_dev, &aenq_handlers);
1461 "Cannot initialize ENA admin queue\n");
1462 goto err_mmio_read_less;
1465 /* To enable the msix interrupts the driver needs to know the number
1466 * of queues. So the driver uses polling mode to retrieve this
1469 ena_com_set_admin_polling_mode(ena_dev, true);
1471 ena_config_host_info(ena_dev);
1473 /* Get Device Attributes and features */
1474 rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
1477 "Cannot get attribute for ENA device, rc: %d\n", rc);
1478 goto err_admin_init;
1481 aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
1482 BIT(ENA_ADMIN_NOTIFICATION) |
1483 BIT(ENA_ADMIN_KEEP_ALIVE) |
1484 BIT(ENA_ADMIN_FATAL_ERROR) |
1485 BIT(ENA_ADMIN_WARNING);
1487 aenq_groups &= get_feat_ctx->aenq.supported_groups;
1488 rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
1490 PMD_DRV_LOG(ERR, "Cannot configure AENQ groups, rc: %d\n", rc);
1491 goto err_admin_init;
1494 *wd_state = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
1499 ena_com_admin_destroy(ena_dev);
1502 ena_com_mmio_reg_read_request_destroy(ena_dev);
1507 static void ena_interrupt_handler_rte(void *cb_arg)
1509 struct rte_eth_dev *dev = cb_arg;
1510 struct ena_adapter *adapter = dev->data->dev_private;
1511 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1513 ena_com_admin_q_comp_intr_handler(ena_dev);
1514 if (likely(adapter->state != ENA_ADAPTER_STATE_CLOSED))
1515 ena_com_aenq_intr_handler(ena_dev, dev);
1518 static void check_for_missing_keep_alive(struct ena_adapter *adapter)
1520 if (!adapter->wd_state)
1523 if (adapter->keep_alive_timeout == ENA_HW_HINTS_NO_TIMEOUT)
1526 if (unlikely((rte_get_timer_cycles() - adapter->timestamp_wd) >=
1527 adapter->keep_alive_timeout)) {
1528 PMD_DRV_LOG(ERR, "Keep alive timeout\n");
1529 adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO;
1530 adapter->trigger_reset = true;
1531 ++adapter->dev_stats.wd_expired;
1535 /* Check if admin queue is enabled */
1536 static void check_for_admin_com_state(struct ena_adapter *adapter)
1538 if (unlikely(!ena_com_get_admin_running_state(&adapter->ena_dev))) {
1539 PMD_DRV_LOG(ERR, "ENA admin queue is not in running state\n");
1540 adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO;
1541 adapter->trigger_reset = true;
1545 static int check_for_tx_completion_in_queue(struct ena_adapter *adapter,
1546 struct ena_ring *tx_ring)
1548 struct ena_tx_buffer *tx_buf;
1550 uint64_t completion_delay;
1551 uint32_t missed_tx = 0;
1555 for (i = 0; i < tx_ring->ring_size; ++i) {
1556 tx_buf = &tx_ring->tx_buffer_info[i];
1557 timestamp = tx_buf->timestamp;
1562 completion_delay = rte_get_timer_cycles() - timestamp;
1563 if (completion_delay > adapter->missing_tx_completion_to) {
1564 if (unlikely(!tx_buf->print_once)) {
1566 "Found a Tx that wasn't completed on time, qid %d, index %d. "
1567 "Missing Tx outstanding for %" PRIu64 " msecs.\n",
1568 tx_ring->id, i, completion_delay /
1569 rte_get_timer_hz() * 1000);
1570 tx_buf->print_once = true;
1576 if (unlikely(missed_tx > tx_ring->missing_tx_completion_threshold)) {
1578 "The number of lost Tx completions is above the threshold (%d > %d). "
1579 "Trigger the device reset.\n",
1581 tx_ring->missing_tx_completion_threshold);
1582 adapter->reset_reason = ENA_REGS_RESET_MISS_TX_CMPL;
1583 adapter->trigger_reset = true;
1587 tx_ring->tx_stats.missed_tx += missed_tx;
1592 static void check_for_tx_completions(struct ena_adapter *adapter)
1594 struct ena_ring *tx_ring;
1595 uint64_t tx_cleanup_delay;
1598 uint16_t nb_tx_queues = adapter->edev_data->nb_tx_queues;
1600 if (adapter->missing_tx_completion_to == ENA_HW_HINTS_NO_TIMEOUT)
1603 nb_tx_queues = adapter->edev_data->nb_tx_queues;
1604 budget = adapter->missing_tx_completion_budget;
1606 qid = adapter->last_tx_comp_qid;
1607 while (budget-- > 0) {
1608 tx_ring = &adapter->tx_ring[qid];
1610 /* Tx cleanup is called only by the burst function and can be
1611 * called dynamically by the application. Also cleanup is
1612 * limited by the threshold. To avoid false detection of the
1613 * missing HW Tx completion, get the delay since last cleanup
1614 * function was called.
1616 tx_cleanup_delay = rte_get_timer_cycles() -
1617 tx_ring->last_cleanup_ticks;
1618 if (tx_cleanup_delay < adapter->tx_cleanup_stall_delay)
1619 check_for_tx_completion_in_queue(adapter, tx_ring);
1620 qid = (qid + 1) % nb_tx_queues;
1623 adapter->last_tx_comp_qid = qid;
1626 static void ena_timer_wd_callback(__rte_unused struct rte_timer *timer,
1629 struct rte_eth_dev *dev = arg;
1630 struct ena_adapter *adapter = dev->data->dev_private;
1632 check_for_missing_keep_alive(adapter);
1633 check_for_admin_com_state(adapter);
1634 check_for_tx_completions(adapter);
1636 if (unlikely(adapter->trigger_reset)) {
1637 PMD_DRV_LOG(ERR, "Trigger reset is on\n");
1638 rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
1644 set_default_llq_configurations(struct ena_llq_configurations *llq_config,
1645 struct ena_admin_feature_llq_desc *llq,
1646 bool use_large_llq_hdr)
1648 llq_config->llq_header_location = ENA_ADMIN_INLINE_HEADER;
1649 llq_config->llq_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY;
1650 llq_config->llq_num_decs_before_header =
1651 ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2;
1653 if (use_large_llq_hdr &&
1654 (llq->entry_size_ctrl_supported & ENA_ADMIN_LIST_ENTRY_SIZE_256B)) {
1655 llq_config->llq_ring_entry_size =
1656 ENA_ADMIN_LIST_ENTRY_SIZE_256B;
1657 llq_config->llq_ring_entry_size_value = 256;
1659 llq_config->llq_ring_entry_size =
1660 ENA_ADMIN_LIST_ENTRY_SIZE_128B;
1661 llq_config->llq_ring_entry_size_value = 128;
1666 ena_set_queues_placement_policy(struct ena_adapter *adapter,
1667 struct ena_com_dev *ena_dev,
1668 struct ena_admin_feature_llq_desc *llq,
1669 struct ena_llq_configurations *llq_default_configurations)
1672 u32 llq_feature_mask;
1674 llq_feature_mask = 1 << ENA_ADMIN_LLQ;
1675 if (!(ena_dev->supported_features & llq_feature_mask)) {
1677 "LLQ is not supported. Fallback to host mode policy.\n");
1678 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1682 rc = ena_com_config_dev_mode(ena_dev, llq, llq_default_configurations);
1684 PMD_INIT_LOG(WARNING,
1685 "Failed to config dev mode. Fallback to host mode policy.\n");
1686 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1690 /* Nothing to config, exit */
1691 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
1694 if (!adapter->dev_mem_base) {
1696 "Unable to access LLQ BAR resource. Fallback to host mode policy.\n");
1697 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1701 ena_dev->mem_bar = adapter->dev_mem_base;
1706 static uint32_t ena_calc_max_io_queue_num(struct ena_com_dev *ena_dev,
1707 struct ena_com_dev_get_features_ctx *get_feat_ctx)
1709 uint32_t io_tx_sq_num, io_tx_cq_num, io_rx_num, max_num_io_queues;
1711 /* Regular queues capabilities */
1712 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
1713 struct ena_admin_queue_ext_feature_fields *max_queue_ext =
1714 &get_feat_ctx->max_queue_ext.max_queue_ext;
1715 io_rx_num = RTE_MIN(max_queue_ext->max_rx_sq_num,
1716 max_queue_ext->max_rx_cq_num);
1717 io_tx_sq_num = max_queue_ext->max_tx_sq_num;
1718 io_tx_cq_num = max_queue_ext->max_tx_cq_num;
1720 struct ena_admin_queue_feature_desc *max_queues =
1721 &get_feat_ctx->max_queues;
1722 io_tx_sq_num = max_queues->max_sq_num;
1723 io_tx_cq_num = max_queues->max_cq_num;
1724 io_rx_num = RTE_MIN(io_tx_sq_num, io_tx_cq_num);
1727 /* In case of LLQ use the llq number in the get feature cmd */
1728 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
1729 io_tx_sq_num = get_feat_ctx->llq.max_llq_num;
1731 max_num_io_queues = RTE_MIN(ENA_MAX_NUM_IO_QUEUES, io_rx_num);
1732 max_num_io_queues = RTE_MIN(max_num_io_queues, io_tx_sq_num);
1733 max_num_io_queues = RTE_MIN(max_num_io_queues, io_tx_cq_num);
1735 if (unlikely(max_num_io_queues == 0)) {
1736 PMD_DRV_LOG(ERR, "Number of IO queues cannot not be 0\n");
1740 return max_num_io_queues;
1744 ena_set_offloads(struct ena_offloads *offloads,
1745 struct ena_admin_feature_offload_desc *offload_desc)
1747 if (offload_desc->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
1748 offloads->tx_offloads |= ENA_IPV4_TSO;
1750 /* Tx IPv4 checksum offloads */
1751 if (offload_desc->tx &
1752 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)
1753 offloads->tx_offloads |= ENA_L3_IPV4_CSUM;
1754 if (offload_desc->tx &
1755 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK)
1756 offloads->tx_offloads |= ENA_L4_IPV4_CSUM;
1757 if (offload_desc->tx &
1758 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)
1759 offloads->tx_offloads |= ENA_L4_IPV4_CSUM_PARTIAL;
1761 /* Tx IPv6 checksum offloads */
1762 if (offload_desc->tx &
1763 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK)
1764 offloads->tx_offloads |= ENA_L4_IPV6_CSUM;
1765 if (offload_desc->tx &
1766 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK)
1767 offloads->tx_offloads |= ENA_L4_IPV6_CSUM_PARTIAL;
1769 /* Rx IPv4 checksum offloads */
1770 if (offload_desc->rx_supported &
1771 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK)
1772 offloads->rx_offloads |= ENA_L3_IPV4_CSUM;
1773 if (offload_desc->rx_supported &
1774 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK)
1775 offloads->rx_offloads |= ENA_L4_IPV4_CSUM;
1777 /* Rx IPv6 checksum offloads */
1778 if (offload_desc->rx_supported &
1779 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK)
1780 offloads->rx_offloads |= ENA_L4_IPV6_CSUM;
1782 if (offload_desc->rx_supported &
1783 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_MASK)
1784 offloads->rx_offloads |= ENA_RX_RSS_HASH;
1787 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
1789 struct ena_calc_queue_size_ctx calc_queue_ctx = { 0 };
1790 struct rte_pci_device *pci_dev;
1791 struct rte_intr_handle *intr_handle;
1792 struct ena_adapter *adapter = eth_dev->data->dev_private;
1793 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1794 struct ena_com_dev_get_features_ctx get_feat_ctx;
1795 struct ena_llq_configurations llq_config;
1796 const char *queue_type_str;
1797 uint32_t max_num_io_queues;
1799 static int adapters_found;
1800 bool disable_meta_caching;
1801 bool wd_state = false;
1803 eth_dev->dev_ops = &ena_dev_ops;
1804 eth_dev->rx_pkt_burst = ð_ena_recv_pkts;
1805 eth_dev->tx_pkt_burst = ð_ena_xmit_pkts;
1806 eth_dev->tx_pkt_prepare = ð_ena_prep_pkts;
1808 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1811 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1813 memset(adapter, 0, sizeof(struct ena_adapter));
1814 ena_dev = &adapter->ena_dev;
1816 adapter->edev_data = eth_dev->data;
1818 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1820 PMD_INIT_LOG(INFO, "Initializing %x:%x:%x.%d\n",
1821 pci_dev->addr.domain,
1823 pci_dev->addr.devid,
1824 pci_dev->addr.function);
1826 intr_handle = pci_dev->intr_handle;
1828 adapter->regs = pci_dev->mem_resource[ENA_REGS_BAR].addr;
1829 adapter->dev_mem_base = pci_dev->mem_resource[ENA_MEM_BAR].addr;
1831 if (!adapter->regs) {
1832 PMD_INIT_LOG(CRIT, "Failed to access registers BAR(%d)\n",
1837 ena_dev->reg_bar = adapter->regs;
1838 /* This is a dummy pointer for ena_com functions. */
1839 ena_dev->dmadev = adapter;
1841 adapter->id_number = adapters_found;
1843 snprintf(adapter->name, ENA_NAME_MAX_LEN, "ena_%d",
1844 adapter->id_number);
1846 rc = ena_parse_devargs(adapter, pci_dev->device.devargs);
1848 PMD_INIT_LOG(CRIT, "Failed to parse devargs\n");
1852 /* device specific initialization routine */
1853 rc = ena_device_init(ena_dev, pci_dev, &get_feat_ctx, &wd_state);
1855 PMD_INIT_LOG(CRIT, "Failed to init ENA device\n");
1858 adapter->wd_state = wd_state;
1860 set_default_llq_configurations(&llq_config, &get_feat_ctx.llq,
1861 adapter->use_large_llq_hdr);
1862 rc = ena_set_queues_placement_policy(adapter, ena_dev,
1863 &get_feat_ctx.llq, &llq_config);
1865 PMD_INIT_LOG(CRIT, "Failed to set placement policy\n");
1869 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
1870 queue_type_str = "Regular";
1872 queue_type_str = "Low latency";
1873 PMD_DRV_LOG(INFO, "Placement policy: %s\n", queue_type_str);
1875 calc_queue_ctx.ena_dev = ena_dev;
1876 calc_queue_ctx.get_feat_ctx = &get_feat_ctx;
1878 max_num_io_queues = ena_calc_max_io_queue_num(ena_dev, &get_feat_ctx);
1879 rc = ena_calc_io_queue_size(&calc_queue_ctx,
1880 adapter->use_large_llq_hdr);
1881 if (unlikely((rc != 0) || (max_num_io_queues == 0))) {
1883 goto err_device_destroy;
1886 adapter->max_tx_ring_size = calc_queue_ctx.max_tx_queue_size;
1887 adapter->max_rx_ring_size = calc_queue_ctx.max_rx_queue_size;
1888 adapter->max_tx_sgl_size = calc_queue_ctx.max_tx_sgl_size;
1889 adapter->max_rx_sgl_size = calc_queue_ctx.max_rx_sgl_size;
1890 adapter->max_num_io_queues = max_num_io_queues;
1892 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
1893 disable_meta_caching =
1894 !!(get_feat_ctx.llq.accel_mode.u.get.supported_flags &
1895 BIT(ENA_ADMIN_DISABLE_META_CACHING));
1897 disable_meta_caching = false;
1900 /* prepare ring structures */
1901 ena_init_rings(adapter, disable_meta_caching);
1903 ena_config_debug_area(adapter);
1905 /* Set max MTU for this device */
1906 adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu;
1908 ena_set_offloads(&adapter->offloads, &get_feat_ctx.offload);
1910 /* Copy MAC address and point DPDK to it */
1911 eth_dev->data->mac_addrs = (struct rte_ether_addr *)adapter->mac_addr;
1912 rte_ether_addr_copy((struct rte_ether_addr *)
1913 get_feat_ctx.dev_attr.mac_addr,
1914 (struct rte_ether_addr *)adapter->mac_addr);
1916 rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
1917 if (unlikely(rc != 0)) {
1918 PMD_DRV_LOG(ERR, "Failed to initialize RSS in ENA device\n");
1919 goto err_delete_debug_area;
1922 adapter->drv_stats = rte_zmalloc("adapter stats",
1923 sizeof(*adapter->drv_stats),
1924 RTE_CACHE_LINE_SIZE);
1925 if (!adapter->drv_stats) {
1927 "Failed to allocate memory for adapter statistics\n");
1929 goto err_rss_destroy;
1932 rte_spinlock_init(&adapter->admin_lock);
1934 rte_intr_callback_register(intr_handle,
1935 ena_interrupt_handler_rte,
1937 rte_intr_enable(intr_handle);
1938 ena_com_set_admin_polling_mode(ena_dev, false);
1939 ena_com_admin_aenq_enable(ena_dev);
1941 if (adapters_found == 0)
1942 rte_timer_subsystem_init();
1943 rte_timer_init(&adapter->timer_wd);
1946 adapter->state = ENA_ADAPTER_STATE_INIT;
1951 ena_com_rss_destroy(ena_dev);
1952 err_delete_debug_area:
1953 ena_com_delete_debug_area(ena_dev);
1956 ena_com_delete_host_info(ena_dev);
1957 ena_com_admin_destroy(ena_dev);
1963 static void ena_destroy_device(struct rte_eth_dev *eth_dev)
1965 struct ena_adapter *adapter = eth_dev->data->dev_private;
1966 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1968 if (adapter->state == ENA_ADAPTER_STATE_FREE)
1971 ena_com_set_admin_running_state(ena_dev, false);
1973 if (adapter->state != ENA_ADAPTER_STATE_CLOSED)
1976 ena_com_rss_destroy(ena_dev);
1978 ena_com_delete_debug_area(ena_dev);
1979 ena_com_delete_host_info(ena_dev);
1981 ena_com_abort_admin_commands(ena_dev);
1982 ena_com_wait_for_abort_completion(ena_dev);
1983 ena_com_admin_destroy(ena_dev);
1984 ena_com_mmio_reg_read_request_destroy(ena_dev);
1986 adapter->state = ENA_ADAPTER_STATE_FREE;
1989 static int eth_ena_dev_uninit(struct rte_eth_dev *eth_dev)
1991 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1994 ena_destroy_device(eth_dev);
1999 static int ena_dev_configure(struct rte_eth_dev *dev)
2001 struct ena_adapter *adapter = dev->data->dev_private;
2003 adapter->state = ENA_ADAPTER_STATE_CONFIG;
2005 if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
2006 dev->data->dev_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
2007 dev->data->dev_conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
2009 /* Scattered Rx cannot be turned off in the HW, so this capability must
2012 dev->data->scattered_rx = 1;
2014 adapter->last_tx_comp_qid = 0;
2016 adapter->missing_tx_completion_budget =
2017 RTE_MIN(ENA_MONITORED_TX_QUEUES, dev->data->nb_tx_queues);
2019 adapter->missing_tx_completion_to = ENA_TX_TIMEOUT;
2020 /* To avoid detection of the spurious Tx completion timeout due to
2021 * application not calling the Tx cleanup function, set timeout for the
2022 * Tx queue which should be half of the missing completion timeout for a
2023 * safety. If there will be a lot of missing Tx completions in the
2024 * queue, they will be detected sooner or later.
2026 adapter->tx_cleanup_stall_delay = adapter->missing_tx_completion_to / 2;
2031 static void ena_init_rings(struct ena_adapter *adapter,
2032 bool disable_meta_caching)
2036 for (i = 0; i < adapter->max_num_io_queues; i++) {
2037 struct ena_ring *ring = &adapter->tx_ring[i];
2039 ring->configured = 0;
2040 ring->type = ENA_RING_TYPE_TX;
2041 ring->adapter = adapter;
2043 ring->tx_mem_queue_type = adapter->ena_dev.tx_mem_queue_type;
2044 ring->tx_max_header_size = adapter->ena_dev.tx_max_header_size;
2045 ring->sgl_size = adapter->max_tx_sgl_size;
2046 ring->disable_meta_caching = disable_meta_caching;
2049 for (i = 0; i < adapter->max_num_io_queues; i++) {
2050 struct ena_ring *ring = &adapter->rx_ring[i];
2052 ring->configured = 0;
2053 ring->type = ENA_RING_TYPE_RX;
2054 ring->adapter = adapter;
2056 ring->sgl_size = adapter->max_rx_sgl_size;
2060 static uint64_t ena_get_rx_port_offloads(struct ena_adapter *adapter)
2062 uint64_t port_offloads = 0;
2064 if (adapter->offloads.rx_offloads & ENA_L3_IPV4_CSUM)
2065 port_offloads |= RTE_ETH_RX_OFFLOAD_IPV4_CKSUM;
2067 if (adapter->offloads.rx_offloads &
2068 (ENA_L4_IPV4_CSUM | ENA_L4_IPV6_CSUM))
2070 RTE_ETH_RX_OFFLOAD_UDP_CKSUM | RTE_ETH_RX_OFFLOAD_TCP_CKSUM;
2072 if (adapter->offloads.rx_offloads & ENA_RX_RSS_HASH)
2073 port_offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
2075 port_offloads |= RTE_ETH_RX_OFFLOAD_SCATTER;
2077 return port_offloads;
2080 static uint64_t ena_get_tx_port_offloads(struct ena_adapter *adapter)
2082 uint64_t port_offloads = 0;
2084 if (adapter->offloads.tx_offloads & ENA_IPV4_TSO)
2085 port_offloads |= RTE_ETH_TX_OFFLOAD_TCP_TSO;
2087 if (adapter->offloads.tx_offloads & ENA_L3_IPV4_CSUM)
2088 port_offloads |= RTE_ETH_TX_OFFLOAD_IPV4_CKSUM;
2089 if (adapter->offloads.tx_offloads &
2090 (ENA_L4_IPV4_CSUM_PARTIAL | ENA_L4_IPV4_CSUM |
2091 ENA_L4_IPV6_CSUM | ENA_L4_IPV6_CSUM_PARTIAL))
2093 RTE_ETH_TX_OFFLOAD_UDP_CKSUM | RTE_ETH_TX_OFFLOAD_TCP_CKSUM;
2095 port_offloads |= RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
2097 return port_offloads;
2100 static uint64_t ena_get_rx_queue_offloads(struct ena_adapter *adapter)
2102 RTE_SET_USED(adapter);
2107 static uint64_t ena_get_tx_queue_offloads(struct ena_adapter *adapter)
2109 RTE_SET_USED(adapter);
2114 static int ena_infos_get(struct rte_eth_dev *dev,
2115 struct rte_eth_dev_info *dev_info)
2117 struct ena_adapter *adapter;
2118 struct ena_com_dev *ena_dev;
2120 ena_assert_msg(dev->data != NULL, "Uninitialized device\n");
2121 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device\n");
2122 adapter = dev->data->dev_private;
2124 ena_dev = &adapter->ena_dev;
2125 ena_assert_msg(ena_dev != NULL, "Uninitialized device\n");
2127 dev_info->speed_capa =
2128 RTE_ETH_LINK_SPEED_1G |
2129 RTE_ETH_LINK_SPEED_2_5G |
2130 RTE_ETH_LINK_SPEED_5G |
2131 RTE_ETH_LINK_SPEED_10G |
2132 RTE_ETH_LINK_SPEED_25G |
2133 RTE_ETH_LINK_SPEED_40G |
2134 RTE_ETH_LINK_SPEED_50G |
2135 RTE_ETH_LINK_SPEED_100G;
2137 /* Inform framework about available features */
2138 dev_info->rx_offload_capa = ena_get_rx_port_offloads(adapter);
2139 dev_info->tx_offload_capa = ena_get_tx_port_offloads(adapter);
2140 dev_info->rx_queue_offload_capa = ena_get_rx_queue_offloads(adapter);
2141 dev_info->tx_queue_offload_capa = ena_get_tx_queue_offloads(adapter);
2143 dev_info->flow_type_rss_offloads = ENA_ALL_RSS_HF;
2144 dev_info->hash_key_size = ENA_HASH_KEY_SIZE;
2146 dev_info->min_rx_bufsize = ENA_MIN_FRAME_LEN;
2147 dev_info->max_rx_pktlen = adapter->max_mtu + RTE_ETHER_HDR_LEN +
2149 dev_info->min_mtu = ENA_MIN_MTU;
2150 dev_info->max_mtu = adapter->max_mtu;
2151 dev_info->max_mac_addrs = 1;
2153 dev_info->max_rx_queues = adapter->max_num_io_queues;
2154 dev_info->max_tx_queues = adapter->max_num_io_queues;
2155 dev_info->reta_size = ENA_RX_RSS_TABLE_SIZE;
2157 dev_info->rx_desc_lim.nb_max = adapter->max_rx_ring_size;
2158 dev_info->rx_desc_lim.nb_min = ENA_MIN_RING_DESC;
2159 dev_info->rx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2160 adapter->max_rx_sgl_size);
2161 dev_info->rx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2162 adapter->max_rx_sgl_size);
2164 dev_info->tx_desc_lim.nb_max = adapter->max_tx_ring_size;
2165 dev_info->tx_desc_lim.nb_min = ENA_MIN_RING_DESC;
2166 dev_info->tx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2167 adapter->max_tx_sgl_size);
2168 dev_info->tx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
2169 adapter->max_tx_sgl_size);
2171 dev_info->default_rxportconf.ring_size = ENA_DEFAULT_RING_SIZE;
2172 dev_info->default_txportconf.ring_size = ENA_DEFAULT_RING_SIZE;
2177 static inline void ena_init_rx_mbuf(struct rte_mbuf *mbuf, uint16_t len)
2179 mbuf->data_len = len;
2180 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
2185 static struct rte_mbuf *ena_rx_mbuf(struct ena_ring *rx_ring,
2186 struct ena_com_rx_buf_info *ena_bufs,
2188 uint16_t *next_to_clean,
2191 struct rte_mbuf *mbuf;
2192 struct rte_mbuf *mbuf_head;
2193 struct ena_rx_buffer *rx_info;
2195 uint16_t ntc, len, req_id, buf = 0;
2197 if (unlikely(descs == 0))
2200 ntc = *next_to_clean;
2202 len = ena_bufs[buf].len;
2203 req_id = ena_bufs[buf].req_id;
2205 rx_info = &rx_ring->rx_buffer_info[req_id];
2207 mbuf = rx_info->mbuf;
2208 RTE_ASSERT(mbuf != NULL);
2210 ena_init_rx_mbuf(mbuf, len);
2212 /* Fill the mbuf head with the data specific for 1st segment. */
2214 mbuf_head->nb_segs = descs;
2215 mbuf_head->port = rx_ring->port_id;
2216 mbuf_head->pkt_len = len;
2217 mbuf_head->data_off += offset;
2219 rx_info->mbuf = NULL;
2220 rx_ring->empty_rx_reqs[ntc] = req_id;
2221 ntc = ENA_IDX_NEXT_MASKED(ntc, rx_ring->size_mask);
2225 len = ena_bufs[buf].len;
2226 req_id = ena_bufs[buf].req_id;
2228 rx_info = &rx_ring->rx_buffer_info[req_id];
2229 RTE_ASSERT(rx_info->mbuf != NULL);
2231 if (unlikely(len == 0)) {
2233 * Some devices can pass descriptor with the length 0.
2234 * To avoid confusion, the PMD is simply putting the
2235 * descriptor back, as it was never used. We'll avoid
2236 * mbuf allocation that way.
2238 rc = ena_add_single_rx_desc(rx_ring->ena_com_io_sq,
2239 rx_info->mbuf, req_id);
2240 if (unlikely(rc != 0)) {
2241 /* Free the mbuf in case of an error. */
2242 rte_mbuf_raw_free(rx_info->mbuf);
2245 * If there was no error, just exit the loop as
2246 * 0 length descriptor is always the last one.
2251 /* Create an mbuf chain. */
2252 mbuf->next = rx_info->mbuf;
2255 ena_init_rx_mbuf(mbuf, len);
2256 mbuf_head->pkt_len += len;
2260 * Mark the descriptor as depleted and perform necessary
2262 * This code will execute in two cases:
2263 * 1. Descriptor len was greater than 0 - normal situation.
2264 * 2. Descriptor len was 0 and we failed to add the descriptor
2265 * to the device. In that situation, we should try to add
2266 * the mbuf again in the populate routine and mark the
2267 * descriptor as used up by the device.
2269 rx_info->mbuf = NULL;
2270 rx_ring->empty_rx_reqs[ntc] = req_id;
2271 ntc = ENA_IDX_NEXT_MASKED(ntc, rx_ring->size_mask);
2274 *next_to_clean = ntc;
2279 static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
2282 struct ena_ring *rx_ring = (struct ena_ring *)(rx_queue);
2283 unsigned int free_queue_entries;
2284 uint16_t next_to_clean = rx_ring->next_to_clean;
2285 uint16_t descs_in_use;
2286 struct rte_mbuf *mbuf;
2288 struct ena_com_rx_ctx ena_rx_ctx;
2292 #ifdef RTE_ETHDEV_DEBUG_RX
2293 /* Check adapter state */
2294 if (unlikely(rx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2296 "Trying to receive pkts while device is NOT running\n");
2301 fill_hash = rx_ring->offloads & RTE_ETH_RX_OFFLOAD_RSS_HASH;
2303 descs_in_use = rx_ring->ring_size -
2304 ena_com_free_q_entries(rx_ring->ena_com_io_sq) - 1;
2305 nb_pkts = RTE_MIN(descs_in_use, nb_pkts);
2307 for (completed = 0; completed < nb_pkts; completed++) {
2308 ena_rx_ctx.max_bufs = rx_ring->sgl_size;
2309 ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
2310 ena_rx_ctx.descs = 0;
2311 ena_rx_ctx.pkt_offset = 0;
2312 /* receive packet context */
2313 rc = ena_com_rx_pkt(rx_ring->ena_com_io_cq,
2314 rx_ring->ena_com_io_sq,
2318 "Failed to get the packet from the device, rc: %d\n",
2320 if (rc == ENA_COM_NO_SPACE) {
2321 ++rx_ring->rx_stats.bad_desc_num;
2322 rx_ring->adapter->reset_reason =
2323 ENA_REGS_RESET_TOO_MANY_RX_DESCS;
2325 ++rx_ring->rx_stats.bad_req_id;
2326 rx_ring->adapter->reset_reason =
2327 ENA_REGS_RESET_INV_RX_REQ_ID;
2329 rx_ring->adapter->trigger_reset = true;
2333 mbuf = ena_rx_mbuf(rx_ring,
2334 ena_rx_ctx.ena_bufs,
2337 ena_rx_ctx.pkt_offset);
2338 if (unlikely(mbuf == NULL)) {
2339 for (i = 0; i < ena_rx_ctx.descs; ++i) {
2340 rx_ring->empty_rx_reqs[next_to_clean] =
2341 rx_ring->ena_bufs[i].req_id;
2342 next_to_clean = ENA_IDX_NEXT_MASKED(
2343 next_to_clean, rx_ring->size_mask);
2348 /* fill mbuf attributes if any */
2349 ena_rx_mbuf_prepare(rx_ring, mbuf, &ena_rx_ctx, fill_hash);
2351 if (unlikely(mbuf->ol_flags &
2352 (RTE_MBUF_F_RX_IP_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_BAD)))
2353 rte_atomic64_inc(&rx_ring->adapter->drv_stats->ierrors);
2355 rx_pkts[completed] = mbuf;
2356 rx_ring->rx_stats.bytes += mbuf->pkt_len;
2359 rx_ring->rx_stats.cnt += completed;
2360 rx_ring->next_to_clean = next_to_clean;
2362 free_queue_entries = ena_com_free_q_entries(rx_ring->ena_com_io_sq);
2364 /* Burst refill to save doorbells, memory barriers, const interval */
2365 if (free_queue_entries >= rx_ring->rx_free_thresh) {
2366 ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq);
2367 ena_populate_rx_queue(rx_ring, free_queue_entries);
2374 eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2380 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2381 struct ena_adapter *adapter = tx_ring->adapter;
2382 struct rte_ipv4_hdr *ip_hdr;
2384 uint64_t l4_csum_flag;
2385 uint64_t dev_offload_capa;
2386 uint16_t frag_field;
2387 bool need_pseudo_csum;
2389 dev_offload_capa = adapter->offloads.tx_offloads;
2390 for (i = 0; i != nb_pkts; i++) {
2392 ol_flags = m->ol_flags;
2394 /* Check if any offload flag was set */
2398 l4_csum_flag = ol_flags & RTE_MBUF_F_TX_L4_MASK;
2399 /* SCTP checksum offload is not supported by the ENA. */
2400 if ((ol_flags & ENA_TX_OFFLOAD_NOTSUP_MASK) ||
2401 l4_csum_flag == RTE_MBUF_F_TX_SCTP_CKSUM) {
2403 "mbuf[%" PRIu32 "] has unsupported offloads flags set: 0x%" PRIu64 "\n",
2405 rte_errno = ENOTSUP;
2409 if (unlikely(m->nb_segs >= tx_ring->sgl_size &&
2410 !(tx_ring->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV &&
2411 m->nb_segs == tx_ring->sgl_size &&
2412 m->data_len < tx_ring->tx_max_header_size))) {
2414 "mbuf[%" PRIu32 "] has too many segments: %" PRIu16 "\n",
2420 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
2421 /* Check if requested offload is also enabled for the queue */
2422 if ((ol_flags & RTE_MBUF_F_TX_IP_CKSUM &&
2423 !(tx_ring->offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM)) ||
2424 (l4_csum_flag == RTE_MBUF_F_TX_TCP_CKSUM &&
2425 !(tx_ring->offloads & RTE_ETH_TX_OFFLOAD_TCP_CKSUM)) ||
2426 (l4_csum_flag == RTE_MBUF_F_TX_UDP_CKSUM &&
2427 !(tx_ring->offloads & RTE_ETH_TX_OFFLOAD_UDP_CKSUM))) {
2429 "mbuf[%" PRIu32 "]: requested offloads: %" PRIu16 " are not enabled for the queue[%u]\n",
2430 i, m->nb_segs, tx_ring->id);
2435 /* The caller is obligated to set l2 and l3 len if any cksum
2436 * offload is enabled.
2438 if (unlikely(ol_flags & (RTE_MBUF_F_TX_IP_CKSUM | RTE_MBUF_F_TX_L4_MASK) &&
2439 (m->l2_len == 0 || m->l3_len == 0))) {
2441 "mbuf[%" PRIu32 "]: l2_len or l3_len values are 0 while the offload was requested\n",
2446 ret = rte_validate_tx_offload(m);
2453 /* Verify HW support for requested offloads and determine if
2454 * pseudo header checksum is needed.
2456 need_pseudo_csum = false;
2457 if (ol_flags & RTE_MBUF_F_TX_IPV4) {
2458 if (ol_flags & RTE_MBUF_F_TX_IP_CKSUM &&
2459 !(dev_offload_capa & ENA_L3_IPV4_CSUM)) {
2460 rte_errno = ENOTSUP;
2464 if (ol_flags & RTE_MBUF_F_TX_TCP_SEG &&
2465 !(dev_offload_capa & ENA_IPV4_TSO)) {
2466 rte_errno = ENOTSUP;
2470 /* Check HW capabilities and if pseudo csum is needed
2473 if (l4_csum_flag != RTE_MBUF_F_TX_L4_NO_CKSUM &&
2474 !(dev_offload_capa & ENA_L4_IPV4_CSUM)) {
2475 if (dev_offload_capa &
2476 ENA_L4_IPV4_CSUM_PARTIAL) {
2477 need_pseudo_csum = true;
2479 rte_errno = ENOTSUP;
2484 /* Parse the DF flag */
2485 ip_hdr = rte_pktmbuf_mtod_offset(m,
2486 struct rte_ipv4_hdr *, m->l2_len);
2487 frag_field = rte_be_to_cpu_16(ip_hdr->fragment_offset);
2488 if (frag_field & RTE_IPV4_HDR_DF_FLAG) {
2489 m->packet_type |= RTE_PTYPE_L4_NONFRAG;
2490 } else if (ol_flags & RTE_MBUF_F_TX_TCP_SEG) {
2491 /* In case we are supposed to TSO and have DF
2492 * not set (DF=0) hardware must be provided with
2495 need_pseudo_csum = true;
2497 } else if (ol_flags & RTE_MBUF_F_TX_IPV6) {
2498 /* There is no support for IPv6 TSO as for now. */
2499 if (ol_flags & RTE_MBUF_F_TX_TCP_SEG) {
2500 rte_errno = ENOTSUP;
2504 /* Check HW capabilities and if pseudo csum is needed */
2505 if (l4_csum_flag != RTE_MBUF_F_TX_L4_NO_CKSUM &&
2506 !(dev_offload_capa & ENA_L4_IPV6_CSUM)) {
2507 if (dev_offload_capa &
2508 ENA_L4_IPV6_CSUM_PARTIAL) {
2509 need_pseudo_csum = true;
2511 rte_errno = ENOTSUP;
2517 if (need_pseudo_csum) {
2518 ret = rte_net_intel_cksum_flags_prepare(m, ol_flags);
2529 static void ena_update_hints(struct ena_adapter *adapter,
2530 struct ena_admin_ena_hw_hints *hints)
2532 if (hints->admin_completion_tx_timeout)
2533 adapter->ena_dev.admin_queue.completion_timeout =
2534 hints->admin_completion_tx_timeout * 1000;
2536 if (hints->mmio_read_timeout)
2537 /* convert to usec */
2538 adapter->ena_dev.mmio_read.reg_read_to =
2539 hints->mmio_read_timeout * 1000;
2541 if (hints->missing_tx_completion_timeout) {
2542 if (hints->missing_tx_completion_timeout ==
2543 ENA_HW_HINTS_NO_TIMEOUT) {
2544 adapter->missing_tx_completion_to =
2545 ENA_HW_HINTS_NO_TIMEOUT;
2547 /* Convert from msecs to ticks */
2548 adapter->missing_tx_completion_to = rte_get_timer_hz() *
2549 hints->missing_tx_completion_timeout / 1000;
2550 adapter->tx_cleanup_stall_delay =
2551 adapter->missing_tx_completion_to / 2;
2555 if (hints->driver_watchdog_timeout) {
2556 if (hints->driver_watchdog_timeout == ENA_HW_HINTS_NO_TIMEOUT)
2557 adapter->keep_alive_timeout = ENA_HW_HINTS_NO_TIMEOUT;
2559 // Convert msecs to ticks
2560 adapter->keep_alive_timeout =
2561 (hints->driver_watchdog_timeout *
2562 rte_get_timer_hz()) / 1000;
2566 static void ena_tx_map_mbuf(struct ena_ring *tx_ring,
2567 struct ena_tx_buffer *tx_info,
2568 struct rte_mbuf *mbuf,
2570 uint16_t *header_len)
2572 struct ena_com_buf *ena_buf;
2573 uint16_t delta, seg_len, push_len;
2576 seg_len = mbuf->data_len;
2578 tx_info->mbuf = mbuf;
2579 ena_buf = tx_info->bufs;
2581 if (tx_ring->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
2583 * Tx header might be (and will be in most cases) smaller than
2584 * tx_max_header_size. But it's not an issue to send more data
2585 * to the device, than actually needed if the mbuf size is
2586 * greater than tx_max_header_size.
2588 push_len = RTE_MIN(mbuf->pkt_len, tx_ring->tx_max_header_size);
2589 *header_len = push_len;
2591 if (likely(push_len <= seg_len)) {
2592 /* If the push header is in the single segment, then
2593 * just point it to the 1st mbuf data.
2595 *push_header = rte_pktmbuf_mtod(mbuf, uint8_t *);
2597 /* If the push header lays in the several segments, copy
2598 * it to the intermediate buffer.
2600 rte_pktmbuf_read(mbuf, 0, push_len,
2601 tx_ring->push_buf_intermediate_buf);
2602 *push_header = tx_ring->push_buf_intermediate_buf;
2603 delta = push_len - seg_len;
2606 *push_header = NULL;
2611 /* Process first segment taking into consideration pushed header */
2612 if (seg_len > push_len) {
2613 ena_buf->paddr = mbuf->buf_iova +
2616 ena_buf->len = seg_len - push_len;
2618 tx_info->num_of_bufs++;
2621 while ((mbuf = mbuf->next) != NULL) {
2622 seg_len = mbuf->data_len;
2624 /* Skip mbufs if whole data is pushed as a header */
2625 if (unlikely(delta > seg_len)) {
2630 ena_buf->paddr = mbuf->buf_iova + mbuf->data_off + delta;
2631 ena_buf->len = seg_len - delta;
2633 tx_info->num_of_bufs++;
2639 static int ena_xmit_mbuf(struct ena_ring *tx_ring, struct rte_mbuf *mbuf)
2641 struct ena_tx_buffer *tx_info;
2642 struct ena_com_tx_ctx ena_tx_ctx = { { 0 } };
2643 uint16_t next_to_use;
2644 uint16_t header_len;
2650 /* Checking for space for 2 additional metadata descriptors due to
2651 * possible header split and metadata descriptor
2653 if (!ena_com_sq_have_enough_space(tx_ring->ena_com_io_sq,
2654 mbuf->nb_segs + 2)) {
2655 PMD_DRV_LOG(DEBUG, "Not enough space in the tx queue\n");
2656 return ENA_COM_NO_MEM;
2659 next_to_use = tx_ring->next_to_use;
2661 req_id = tx_ring->empty_tx_reqs[next_to_use];
2662 tx_info = &tx_ring->tx_buffer_info[req_id];
2663 tx_info->num_of_bufs = 0;
2664 RTE_ASSERT(tx_info->mbuf == NULL);
2666 ena_tx_map_mbuf(tx_ring, tx_info, mbuf, &push_header, &header_len);
2668 ena_tx_ctx.ena_bufs = tx_info->bufs;
2669 ena_tx_ctx.push_header = push_header;
2670 ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
2671 ena_tx_ctx.req_id = req_id;
2672 ena_tx_ctx.header_len = header_len;
2674 /* Set Tx offloads flags, if applicable */
2675 ena_tx_mbuf_prepare(mbuf, &ena_tx_ctx, tx_ring->offloads,
2676 tx_ring->disable_meta_caching);
2678 if (unlikely(ena_com_is_doorbell_needed(tx_ring->ena_com_io_sq,
2681 "LLQ Tx max burst size of queue %d achieved, writing doorbell to send burst\n",
2683 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2684 tx_ring->tx_stats.doorbells++;
2685 tx_ring->pkts_without_db = false;
2688 /* prepare the packet's descriptors to dma engine */
2689 rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq, &ena_tx_ctx,
2692 PMD_DRV_LOG(ERR, "Failed to prepare Tx buffers, rc: %d\n", rc);
2693 ++tx_ring->tx_stats.prepare_ctx_err;
2694 tx_ring->adapter->reset_reason =
2695 ENA_REGS_RESET_DRIVER_INVALID_STATE;
2696 tx_ring->adapter->trigger_reset = true;
2700 tx_info->tx_descs = nb_hw_desc;
2701 tx_info->timestamp = rte_get_timer_cycles();
2703 tx_ring->tx_stats.cnt++;
2704 tx_ring->tx_stats.bytes += mbuf->pkt_len;
2706 tx_ring->next_to_use = ENA_IDX_NEXT_MASKED(next_to_use,
2707 tx_ring->size_mask);
2712 static void ena_tx_cleanup(struct ena_ring *tx_ring)
2714 unsigned int total_tx_descs = 0;
2715 uint16_t cleanup_budget;
2716 uint16_t next_to_clean = tx_ring->next_to_clean;
2718 /* Attempt to release all Tx descriptors (ring_size - 1 -> size_mask) */
2719 cleanup_budget = tx_ring->size_mask;
2721 while (likely(total_tx_descs < cleanup_budget)) {
2722 struct rte_mbuf *mbuf;
2723 struct ena_tx_buffer *tx_info;
2726 if (ena_com_tx_comp_req_id_get(tx_ring->ena_com_io_cq, &req_id) != 0)
2729 if (unlikely(validate_tx_req_id(tx_ring, req_id) != 0))
2732 /* Get Tx info & store how many descs were processed */
2733 tx_info = &tx_ring->tx_buffer_info[req_id];
2734 tx_info->timestamp = 0;
2736 mbuf = tx_info->mbuf;
2737 rte_pktmbuf_free(mbuf);
2739 tx_info->mbuf = NULL;
2740 tx_ring->empty_tx_reqs[next_to_clean] = req_id;
2742 total_tx_descs += tx_info->tx_descs;
2744 /* Put back descriptor to the ring for reuse */
2745 next_to_clean = ENA_IDX_NEXT_MASKED(next_to_clean,
2746 tx_ring->size_mask);
2749 if (likely(total_tx_descs > 0)) {
2750 /* acknowledge completion of sent packets */
2751 tx_ring->next_to_clean = next_to_clean;
2752 ena_com_comp_ack(tx_ring->ena_com_io_sq, total_tx_descs);
2753 ena_com_update_dev_comp_head(tx_ring->ena_com_io_cq);
2756 /* Notify completion handler that the cleanup was just called */
2757 tx_ring->last_cleanup_ticks = rte_get_timer_cycles();
2760 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2763 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2765 uint16_t sent_idx = 0;
2767 #ifdef RTE_ETHDEV_DEBUG_TX
2768 /* Check adapter state */
2769 if (unlikely(tx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2771 "Trying to xmit pkts while device is NOT running\n");
2776 for (sent_idx = 0; sent_idx < nb_pkts; sent_idx++) {
2777 if (ena_xmit_mbuf(tx_ring, tx_pkts[sent_idx]))
2779 tx_ring->pkts_without_db = true;
2780 rte_prefetch0(tx_pkts[ENA_IDX_ADD_MASKED(sent_idx, 4,
2781 tx_ring->size_mask)]);
2784 available_desc = ena_com_free_q_entries(tx_ring->ena_com_io_sq);
2785 tx_ring->tx_stats.available_desc = available_desc;
2787 /* If there are ready packets to be xmitted... */
2788 if (likely(tx_ring->pkts_without_db)) {
2789 /* ...let HW do its best :-) */
2790 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2791 tx_ring->tx_stats.doorbells++;
2792 tx_ring->pkts_without_db = false;
2795 if (available_desc < tx_ring->tx_free_thresh)
2796 ena_tx_cleanup(tx_ring);
2798 tx_ring->tx_stats.available_desc =
2799 ena_com_free_q_entries(tx_ring->ena_com_io_sq);
2800 tx_ring->tx_stats.tx_poll++;
2805 int ena_copy_eni_stats(struct ena_adapter *adapter)
2807 struct ena_admin_eni_stats admin_eni_stats;
2810 rte_spinlock_lock(&adapter->admin_lock);
2811 rc = ena_com_get_eni_stats(&adapter->ena_dev, &admin_eni_stats);
2812 rte_spinlock_unlock(&adapter->admin_lock);
2814 if (rc == ENA_COM_UNSUPPORTED) {
2816 "Retrieving ENI metrics is not supported\n");
2818 PMD_DRV_LOG(WARNING,
2819 "Failed to get ENI metrics, rc: %d\n", rc);
2824 rte_memcpy(&adapter->eni_stats, &admin_eni_stats,
2825 sizeof(struct ena_stats_eni));
2831 * DPDK callback to retrieve names of extended device statistics
2834 * Pointer to Ethernet device structure.
2835 * @param[out] xstats_names
2836 * Buffer to insert names into.
2841 * Number of xstats names.
2843 static int ena_xstats_get_names(struct rte_eth_dev *dev,
2844 struct rte_eth_xstat_name *xstats_names,
2847 unsigned int xstats_count = ena_xstats_calc_num(dev->data);
2848 unsigned int stat, i, count = 0;
2850 if (n < xstats_count || !xstats_names)
2851 return xstats_count;
2853 for (stat = 0; stat < ENA_STATS_ARRAY_GLOBAL; stat++, count++)
2854 strcpy(xstats_names[count].name,
2855 ena_stats_global_strings[stat].name);
2857 for (stat = 0; stat < ENA_STATS_ARRAY_ENI; stat++, count++)
2858 strcpy(xstats_names[count].name,
2859 ena_stats_eni_strings[stat].name);
2861 for (stat = 0; stat < ENA_STATS_ARRAY_RX; stat++)
2862 for (i = 0; i < dev->data->nb_rx_queues; i++, count++)
2863 snprintf(xstats_names[count].name,
2864 sizeof(xstats_names[count].name),
2866 ena_stats_rx_strings[stat].name);
2868 for (stat = 0; stat < ENA_STATS_ARRAY_TX; stat++)
2869 for (i = 0; i < dev->data->nb_tx_queues; i++, count++)
2870 snprintf(xstats_names[count].name,
2871 sizeof(xstats_names[count].name),
2873 ena_stats_tx_strings[stat].name);
2875 return xstats_count;
2879 * DPDK callback to get extended device statistics.
2882 * Pointer to Ethernet device structure.
2884 * Stats table output buffer.
2886 * The size of the stats table.
2889 * Number of xstats on success, negative on failure.
2891 static int ena_xstats_get(struct rte_eth_dev *dev,
2892 struct rte_eth_xstat *xstats,
2895 struct ena_adapter *adapter = dev->data->dev_private;
2896 unsigned int xstats_count = ena_xstats_calc_num(dev->data);
2897 unsigned int stat, i, count = 0;
2901 if (n < xstats_count)
2902 return xstats_count;
2907 for (stat = 0; stat < ENA_STATS_ARRAY_GLOBAL; stat++, count++) {
2908 stat_offset = ena_stats_global_strings[stat].stat_offset;
2909 stats_begin = &adapter->dev_stats;
2911 xstats[count].id = count;
2912 xstats[count].value = *((uint64_t *)
2913 ((char *)stats_begin + stat_offset));
2916 /* Even if the function below fails, we should copy previous (or initial
2917 * values) to keep structure of rte_eth_xstat consistent.
2919 ena_copy_eni_stats(adapter);
2920 for (stat = 0; stat < ENA_STATS_ARRAY_ENI; stat++, count++) {
2921 stat_offset = ena_stats_eni_strings[stat].stat_offset;
2922 stats_begin = &adapter->eni_stats;
2924 xstats[count].id = count;
2925 xstats[count].value = *((uint64_t *)
2926 ((char *)stats_begin + stat_offset));
2929 for (stat = 0; stat < ENA_STATS_ARRAY_RX; stat++) {
2930 for (i = 0; i < dev->data->nb_rx_queues; i++, count++) {
2931 stat_offset = ena_stats_rx_strings[stat].stat_offset;
2932 stats_begin = &adapter->rx_ring[i].rx_stats;
2934 xstats[count].id = count;
2935 xstats[count].value = *((uint64_t *)
2936 ((char *)stats_begin + stat_offset));
2940 for (stat = 0; stat < ENA_STATS_ARRAY_TX; stat++) {
2941 for (i = 0; i < dev->data->nb_tx_queues; i++, count++) {
2942 stat_offset = ena_stats_tx_strings[stat].stat_offset;
2943 stats_begin = &adapter->tx_ring[i].rx_stats;
2945 xstats[count].id = count;
2946 xstats[count].value = *((uint64_t *)
2947 ((char *)stats_begin + stat_offset));
2954 static int ena_xstats_get_by_id(struct rte_eth_dev *dev,
2955 const uint64_t *ids,
2959 struct ena_adapter *adapter = dev->data->dev_private;
2961 uint64_t rx_entries, tx_entries;
2965 bool was_eni_copied = false;
2967 for (i = 0; i < n; ++i) {
2969 /* Check if id belongs to global statistics */
2970 if (id < ENA_STATS_ARRAY_GLOBAL) {
2971 values[i] = *((uint64_t *)&adapter->dev_stats + id);
2976 /* Check if id belongs to ENI statistics */
2977 id -= ENA_STATS_ARRAY_GLOBAL;
2978 if (id < ENA_STATS_ARRAY_ENI) {
2979 /* Avoid reading ENI stats multiple times in a single
2980 * function call, as it requires communication with the
2983 if (!was_eni_copied) {
2984 was_eni_copied = true;
2985 ena_copy_eni_stats(adapter);
2987 values[i] = *((uint64_t *)&adapter->eni_stats + id);
2992 /* Check if id belongs to rx queue statistics */
2993 id -= ENA_STATS_ARRAY_ENI;
2994 rx_entries = ENA_STATS_ARRAY_RX * dev->data->nb_rx_queues;
2995 if (id < rx_entries) {
2996 qid = id % dev->data->nb_rx_queues;
2997 id /= dev->data->nb_rx_queues;
2998 values[i] = *((uint64_t *)
2999 &adapter->rx_ring[qid].rx_stats + id);
3003 /* Check if id belongs to rx queue statistics */
3005 tx_entries = ENA_STATS_ARRAY_TX * dev->data->nb_tx_queues;
3006 if (id < tx_entries) {
3007 qid = id % dev->data->nb_tx_queues;
3008 id /= dev->data->nb_tx_queues;
3009 values[i] = *((uint64_t *)
3010 &adapter->tx_ring[qid].tx_stats + id);
3019 static int ena_process_bool_devarg(const char *key,
3023 struct ena_adapter *adapter = opaque;
3026 /* Parse the value. */
3027 if (strcmp(value, "1") == 0) {
3029 } else if (strcmp(value, "0") == 0) {
3033 "Invalid value: '%s' for key '%s'. Accepted: '0' or '1'\n",
3038 /* Now, assign it to the proper adapter field. */
3039 if (strcmp(key, ENA_DEVARG_LARGE_LLQ_HDR) == 0)
3040 adapter->use_large_llq_hdr = bool_value;
3045 static int ena_parse_devargs(struct ena_adapter *adapter,
3046 struct rte_devargs *devargs)
3048 static const char * const allowed_args[] = {
3049 ENA_DEVARG_LARGE_LLQ_HDR,
3052 struct rte_kvargs *kvlist;
3055 if (devargs == NULL)
3058 kvlist = rte_kvargs_parse(devargs->args, allowed_args);
3059 if (kvlist == NULL) {
3060 PMD_INIT_LOG(ERR, "Invalid device arguments: %s\n",
3065 rc = rte_kvargs_process(kvlist, ENA_DEVARG_LARGE_LLQ_HDR,
3066 ena_process_bool_devarg, adapter);
3068 rte_kvargs_free(kvlist);
3073 static int ena_setup_rx_intr(struct rte_eth_dev *dev)
3075 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
3076 struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
3078 uint16_t vectors_nb, i;
3079 bool rx_intr_requested = dev->data->dev_conf.intr_conf.rxq;
3081 if (!rx_intr_requested)
3084 if (!rte_intr_cap_multiple(intr_handle)) {
3086 "Rx interrupt requested, but it isn't supported by the PCI driver\n");
3090 /* Disable interrupt mapping before the configuration starts. */
3091 rte_intr_disable(intr_handle);
3093 /* Verify if there are enough vectors available. */
3094 vectors_nb = dev->data->nb_rx_queues;
3095 if (vectors_nb > RTE_MAX_RXTX_INTR_VEC_ID) {
3097 "Too many Rx interrupts requested, maximum number: %d\n",
3098 RTE_MAX_RXTX_INTR_VEC_ID);
3103 /* Allocate the vector list */
3104 if (rte_intr_vec_list_alloc(intr_handle, "intr_vec",
3105 dev->data->nb_rx_queues)) {
3107 "Failed to allocate interrupt vector for %d queues\n",
3108 dev->data->nb_rx_queues);
3113 rc = rte_intr_efd_enable(intr_handle, vectors_nb);
3117 if (!rte_intr_allow_others(intr_handle)) {
3119 "Not enough interrupts available to use both ENA Admin and Rx interrupts\n");
3120 goto disable_intr_efd;
3123 for (i = 0; i < vectors_nb; ++i)
3124 if (rte_intr_vec_list_index_set(intr_handle, i,
3125 RTE_INTR_VEC_RXTX_OFFSET + i))
3126 goto disable_intr_efd;
3128 rte_intr_enable(intr_handle);
3132 rte_intr_efd_disable(intr_handle);
3134 rte_intr_vec_list_free(intr_handle);
3136 rte_intr_enable(intr_handle);
3140 static void ena_rx_queue_intr_set(struct rte_eth_dev *dev,
3144 struct ena_adapter *adapter = dev->data->dev_private;
3145 struct ena_ring *rxq = &adapter->rx_ring[queue_id];
3146 struct ena_eth_io_intr_reg intr_reg;
3148 ena_com_update_intr_reg(&intr_reg, 0, 0, unmask);
3149 ena_com_unmask_intr(rxq->ena_com_io_cq, &intr_reg);
3152 static int ena_rx_queue_intr_enable(struct rte_eth_dev *dev,
3155 ena_rx_queue_intr_set(dev, queue_id, true);
3160 static int ena_rx_queue_intr_disable(struct rte_eth_dev *dev,
3163 ena_rx_queue_intr_set(dev, queue_id, false);
3168 /*********************************************************************
3170 *********************************************************************/
3171 static int eth_ena_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
3172 struct rte_pci_device *pci_dev)
3174 return rte_eth_dev_pci_generic_probe(pci_dev,
3175 sizeof(struct ena_adapter), eth_ena_dev_init);
3178 static int eth_ena_pci_remove(struct rte_pci_device *pci_dev)
3180 return rte_eth_dev_pci_generic_remove(pci_dev, eth_ena_dev_uninit);
3183 static struct rte_pci_driver rte_ena_pmd = {
3184 .id_table = pci_id_ena_map,
3185 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
3186 RTE_PCI_DRV_WC_ACTIVATE,
3187 .probe = eth_ena_pci_probe,
3188 .remove = eth_ena_pci_remove,
3191 RTE_PMD_REGISTER_PCI(net_ena, rte_ena_pmd);
3192 RTE_PMD_REGISTER_PCI_TABLE(net_ena, pci_id_ena_map);
3193 RTE_PMD_REGISTER_KMOD_DEP(net_ena, "* igb_uio | uio_pci_generic | vfio-pci");
3194 RTE_PMD_REGISTER_PARAM_STRING(net_ena, ENA_DEVARG_LARGE_LLQ_HDR "=<0|1>");
3195 RTE_LOG_REGISTER_SUFFIX(ena_logtype_init, init, NOTICE);
3196 RTE_LOG_REGISTER_SUFFIX(ena_logtype_driver, driver, NOTICE);
3197 #ifdef RTE_ETHDEV_DEBUG_RX
3198 RTE_LOG_REGISTER_SUFFIX(ena_logtype_rx, rx, DEBUG);
3200 #ifdef RTE_ETHDEV_DEBUG_TX
3201 RTE_LOG_REGISTER_SUFFIX(ena_logtype_tx, tx, DEBUG);
3203 RTE_LOG_REGISTER_SUFFIX(ena_logtype_com, com, WARNING);
3205 /******************************************************************************
3206 ******************************** AENQ Handlers *******************************
3207 *****************************************************************************/
3208 static void ena_update_on_link_change(void *adapter_data,
3209 struct ena_admin_aenq_entry *aenq_e)
3211 struct rte_eth_dev *eth_dev = adapter_data;
3212 struct ena_adapter *adapter = eth_dev->data->dev_private;
3213 struct ena_admin_aenq_link_change_desc *aenq_link_desc;
3216 aenq_link_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
3218 status = get_ena_admin_aenq_link_change_desc_link_status(aenq_link_desc);
3219 adapter->link_status = status;
3221 ena_link_update(eth_dev, 0);
3222 rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
3225 static void ena_notification(void *adapter_data,
3226 struct ena_admin_aenq_entry *aenq_e)
3228 struct rte_eth_dev *eth_dev = adapter_data;
3229 struct ena_adapter *adapter = eth_dev->data->dev_private;
3230 struct ena_admin_ena_hw_hints *hints;
3232 if (aenq_e->aenq_common_desc.group != ENA_ADMIN_NOTIFICATION)
3233 PMD_DRV_LOG(WARNING, "Invalid AENQ group: %x. Expected: %x\n",
3234 aenq_e->aenq_common_desc.group,
3235 ENA_ADMIN_NOTIFICATION);
3237 switch (aenq_e->aenq_common_desc.syndrome) {
3238 case ENA_ADMIN_UPDATE_HINTS:
3239 hints = (struct ena_admin_ena_hw_hints *)
3240 (&aenq_e->inline_data_w4);
3241 ena_update_hints(adapter, hints);
3244 PMD_DRV_LOG(ERR, "Invalid AENQ notification link state: %d\n",
3245 aenq_e->aenq_common_desc.syndrome);
3249 static void ena_keep_alive(void *adapter_data,
3250 __rte_unused struct ena_admin_aenq_entry *aenq_e)
3252 struct rte_eth_dev *eth_dev = adapter_data;
3253 struct ena_adapter *adapter = eth_dev->data->dev_private;
3254 struct ena_admin_aenq_keep_alive_desc *desc;
3258 adapter->timestamp_wd = rte_get_timer_cycles();
3260 desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e;
3261 rx_drops = ((uint64_t)desc->rx_drops_high << 32) | desc->rx_drops_low;
3262 tx_drops = ((uint64_t)desc->tx_drops_high << 32) | desc->tx_drops_low;
3264 adapter->drv_stats->rx_drops = rx_drops;
3265 adapter->dev_stats.tx_drops = tx_drops;
3269 * This handler will called for unknown event group or unimplemented handlers
3271 static void unimplemented_aenq_handler(__rte_unused void *data,
3272 __rte_unused struct ena_admin_aenq_entry *aenq_e)
3275 "Unknown event was received or event with unimplemented handler\n");
3278 static struct ena_aenq_handlers aenq_handlers = {
3280 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
3281 [ENA_ADMIN_NOTIFICATION] = ena_notification,
3282 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive
3284 .unimplemented_handler = unimplemented_aenq_handler