4 * Copyright (c) 2015-2016 Amazon.com, Inc. or its affiliates.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of copyright holder nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <rte_ether.h>
35 #include <rte_ethdev_driver.h>
36 #include <rte_ethdev_pci.h>
38 #include <rte_atomic.h>
40 #include <rte_errno.h>
41 #include <rte_version.h>
42 #include <rte_eal_memconfig.h>
45 #include "ena_ethdev.h"
47 #include "ena_platform.h"
49 #include "ena_eth_com.h"
51 #include <ena_common_defs.h>
52 #include <ena_regs_defs.h>
53 #include <ena_admin_defs.h>
54 #include <ena_eth_io_defs.h>
56 #define DRV_MODULE_VER_MAJOR 1
57 #define DRV_MODULE_VER_MINOR 1
58 #define DRV_MODULE_VER_SUBMINOR 0
60 #define ENA_IO_TXQ_IDX(q) (2 * (q))
61 #define ENA_IO_RXQ_IDX(q) (2 * (q) + 1)
62 /*reverse version of ENA_IO_RXQ_IDX*/
63 #define ENA_IO_RXQ_IDX_REV(q) ((q - 1) / 2)
65 /* While processing submitted and completed descriptors (rx and tx path
66 * respectively) in a loop it is desired to:
67 * - perform batch submissions while populating sumbissmion queue
68 * - avoid blocking transmission of other packets during cleanup phase
69 * Hence the utilization ratio of 1/8 of a queue size.
71 #define ENA_RING_DESCS_RATIO(ring_size) (ring_size / 8)
73 #define __MERGE_64B_H_L(h, l) (((uint64_t)h << 32) | l)
74 #define TEST_BIT(val, bit_shift) (val & (1UL << bit_shift))
76 #define GET_L4_HDR_LEN(mbuf) \
77 ((rte_pktmbuf_mtod_offset(mbuf, struct tcp_hdr *, \
78 mbuf->l3_len + mbuf->l2_len)->data_off) >> 4)
80 #define ENA_RX_RSS_TABLE_LOG_SIZE 7
81 #define ENA_RX_RSS_TABLE_SIZE (1 << ENA_RX_RSS_TABLE_LOG_SIZE)
82 #define ENA_HASH_KEY_SIZE 40
83 #define ENA_ETH_SS_STATS 0xFF
84 #define ETH_GSTRING_LEN 32
86 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
88 #define ENA_MAX_RING_DESC ENA_DEFAULT_RING_SIZE
89 #define ENA_MIN_RING_DESC 128
91 enum ethtool_stringset {
97 char name[ETH_GSTRING_LEN];
101 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
103 .stat_offset = offsetof(struct ena_com_stats_admin, stat) \
106 #define ENA_STAT_ENTRY(stat, stat_type) { \
108 .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
111 #define ENA_STAT_RX_ENTRY(stat) \
112 ENA_STAT_ENTRY(stat, rx)
114 #define ENA_STAT_TX_ENTRY(stat) \
115 ENA_STAT_ENTRY(stat, tx)
117 #define ENA_STAT_GLOBAL_ENTRY(stat) \
118 ENA_STAT_ENTRY(stat, dev)
121 * Each rte_memzone should have unique name.
122 * To satisfy it, count number of allocation and add it to name.
124 uint32_t ena_alloc_cnt;
126 static const struct ena_stats ena_stats_global_strings[] = {
127 ENA_STAT_GLOBAL_ENTRY(tx_timeout),
128 ENA_STAT_GLOBAL_ENTRY(io_suspend),
129 ENA_STAT_GLOBAL_ENTRY(io_resume),
130 ENA_STAT_GLOBAL_ENTRY(wd_expired),
131 ENA_STAT_GLOBAL_ENTRY(interface_up),
132 ENA_STAT_GLOBAL_ENTRY(interface_down),
133 ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
136 static const struct ena_stats ena_stats_tx_strings[] = {
137 ENA_STAT_TX_ENTRY(cnt),
138 ENA_STAT_TX_ENTRY(bytes),
139 ENA_STAT_TX_ENTRY(queue_stop),
140 ENA_STAT_TX_ENTRY(queue_wakeup),
141 ENA_STAT_TX_ENTRY(dma_mapping_err),
142 ENA_STAT_TX_ENTRY(linearize),
143 ENA_STAT_TX_ENTRY(linearize_failed),
144 ENA_STAT_TX_ENTRY(tx_poll),
145 ENA_STAT_TX_ENTRY(doorbells),
146 ENA_STAT_TX_ENTRY(prepare_ctx_err),
147 ENA_STAT_TX_ENTRY(missing_tx_comp),
148 ENA_STAT_TX_ENTRY(bad_req_id),
151 static const struct ena_stats ena_stats_rx_strings[] = {
152 ENA_STAT_RX_ENTRY(cnt),
153 ENA_STAT_RX_ENTRY(bytes),
154 ENA_STAT_RX_ENTRY(refil_partial),
155 ENA_STAT_RX_ENTRY(bad_csum),
156 ENA_STAT_RX_ENTRY(page_alloc_fail),
157 ENA_STAT_RX_ENTRY(skb_alloc_fail),
158 ENA_STAT_RX_ENTRY(dma_mapping_err),
159 ENA_STAT_RX_ENTRY(bad_desc_num),
160 ENA_STAT_RX_ENTRY(small_copy_len_pkt),
163 static const struct ena_stats ena_stats_ena_com_strings[] = {
164 ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
165 ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
166 ENA_STAT_ENA_COM_ENTRY(completed_cmd),
167 ENA_STAT_ENA_COM_ENTRY(out_of_space),
168 ENA_STAT_ENA_COM_ENTRY(no_completion),
171 #define ENA_STATS_ARRAY_GLOBAL ARRAY_SIZE(ena_stats_global_strings)
172 #define ENA_STATS_ARRAY_TX ARRAY_SIZE(ena_stats_tx_strings)
173 #define ENA_STATS_ARRAY_RX ARRAY_SIZE(ena_stats_rx_strings)
174 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
176 #define QUEUE_OFFLOADS (DEV_TX_OFFLOAD_TCP_CKSUM |\
177 DEV_TX_OFFLOAD_UDP_CKSUM |\
178 DEV_TX_OFFLOAD_IPV4_CKSUM |\
179 DEV_TX_OFFLOAD_TCP_TSO)
180 #define MBUF_OFFLOADS (PKT_TX_L4_MASK |\
184 /** Vendor ID used by Amazon devices */
185 #define PCI_VENDOR_ID_AMAZON 0x1D0F
186 /** Amazon devices */
187 #define PCI_DEVICE_ID_ENA_VF 0xEC20
188 #define PCI_DEVICE_ID_ENA_LLQ_VF 0xEC21
190 #define ENA_TX_OFFLOAD_MASK (\
195 #define ENA_TX_OFFLOAD_NOTSUP_MASK \
196 (PKT_TX_OFFLOAD_MASK ^ ENA_TX_OFFLOAD_MASK)
198 int ena_logtype_init;
199 int ena_logtype_driver;
201 static const struct rte_pci_id pci_id_ena_map[] = {
202 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF) },
203 { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_LLQ_VF) },
207 static struct ena_aenq_handlers aenq_handlers;
209 static int ena_device_init(struct ena_com_dev *ena_dev,
210 struct ena_com_dev_get_features_ctx *get_feat_ctx,
212 static int ena_dev_configure(struct rte_eth_dev *dev);
213 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
215 static uint16_t eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
217 static int ena_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
218 uint16_t nb_desc, unsigned int socket_id,
219 const struct rte_eth_txconf *tx_conf);
220 static int ena_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
221 uint16_t nb_desc, unsigned int socket_id,
222 const struct rte_eth_rxconf *rx_conf,
223 struct rte_mempool *mp);
224 static uint16_t eth_ena_recv_pkts(void *rx_queue,
225 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
226 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count);
227 static void ena_init_rings(struct ena_adapter *adapter);
228 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
229 static int ena_start(struct rte_eth_dev *dev);
230 static void ena_stop(struct rte_eth_dev *dev);
231 static void ena_close(struct rte_eth_dev *dev);
232 static int ena_dev_reset(struct rte_eth_dev *dev);
233 static int ena_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
234 static void ena_rx_queue_release_all(struct rte_eth_dev *dev);
235 static void ena_tx_queue_release_all(struct rte_eth_dev *dev);
236 static void ena_rx_queue_release(void *queue);
237 static void ena_tx_queue_release(void *queue);
238 static void ena_rx_queue_release_bufs(struct ena_ring *ring);
239 static void ena_tx_queue_release_bufs(struct ena_ring *ring);
240 static int ena_link_update(struct rte_eth_dev *dev,
241 int wait_to_complete);
242 static int ena_create_io_queue(struct ena_ring *ring);
243 static void ena_free_io_queues_all(struct ena_adapter *adapter);
244 static int ena_queue_restart(struct ena_ring *ring);
245 static int ena_queue_restart_all(struct rte_eth_dev *dev,
246 enum ena_ring_type ring_type);
247 static void ena_stats_restart(struct rte_eth_dev *dev);
248 static void ena_infos_get(struct rte_eth_dev *dev,
249 struct rte_eth_dev_info *dev_info);
250 static int ena_rss_reta_update(struct rte_eth_dev *dev,
251 struct rte_eth_rss_reta_entry64 *reta_conf,
253 static int ena_rss_reta_query(struct rte_eth_dev *dev,
254 struct rte_eth_rss_reta_entry64 *reta_conf,
256 static int ena_get_sset_count(struct rte_eth_dev *dev, int sset);
257 static void ena_interrupt_handler_rte(void *cb_arg);
258 static void ena_timer_wd_callback(struct rte_timer *timer, void *arg);
260 static const struct eth_dev_ops ena_dev_ops = {
261 .dev_configure = ena_dev_configure,
262 .dev_infos_get = ena_infos_get,
263 .rx_queue_setup = ena_rx_queue_setup,
264 .tx_queue_setup = ena_tx_queue_setup,
265 .dev_start = ena_start,
266 .dev_stop = ena_stop,
267 .link_update = ena_link_update,
268 .stats_get = ena_stats_get,
269 .mtu_set = ena_mtu_set,
270 .rx_queue_release = ena_rx_queue_release,
271 .tx_queue_release = ena_tx_queue_release,
272 .dev_close = ena_close,
273 .dev_reset = ena_dev_reset,
274 .reta_update = ena_rss_reta_update,
275 .reta_query = ena_rss_reta_query,
278 #define NUMA_NO_NODE SOCKET_ID_ANY
280 static inline int ena_cpu_to_node(int cpu)
282 struct rte_config *config = rte_eal_get_configuration();
283 struct rte_fbarray *arr = &config->mem_config->memzones;
284 const struct rte_memzone *mz;
286 if (unlikely(cpu >= RTE_MAX_MEMZONE))
289 mz = rte_fbarray_get(arr, cpu);
291 return mz->socket_id;
294 static inline void ena_rx_mbuf_prepare(struct rte_mbuf *mbuf,
295 struct ena_com_rx_ctx *ena_rx_ctx)
297 uint64_t ol_flags = 0;
298 uint32_t packet_type = 0;
300 if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP)
301 packet_type |= RTE_PTYPE_L4_TCP;
302 else if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)
303 packet_type |= RTE_PTYPE_L4_UDP;
305 if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4)
306 packet_type |= RTE_PTYPE_L3_IPV4;
307 else if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV6)
308 packet_type |= RTE_PTYPE_L3_IPV6;
310 if (unlikely(ena_rx_ctx->l4_csum_err))
311 ol_flags |= PKT_RX_L4_CKSUM_BAD;
312 if (unlikely(ena_rx_ctx->l3_csum_err))
313 ol_flags |= PKT_RX_IP_CKSUM_BAD;
315 mbuf->ol_flags = ol_flags;
316 mbuf->packet_type = packet_type;
319 static inline void ena_tx_mbuf_prepare(struct rte_mbuf *mbuf,
320 struct ena_com_tx_ctx *ena_tx_ctx,
321 uint64_t queue_offloads)
323 struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
325 if ((mbuf->ol_flags & MBUF_OFFLOADS) &&
326 (queue_offloads & QUEUE_OFFLOADS)) {
327 /* check if TSO is required */
328 if ((mbuf->ol_flags & PKT_TX_TCP_SEG) &&
329 (queue_offloads & DEV_TX_OFFLOAD_TCP_TSO)) {
330 ena_tx_ctx->tso_enable = true;
332 ena_meta->l4_hdr_len = GET_L4_HDR_LEN(mbuf);
335 /* check if L3 checksum is needed */
336 if ((mbuf->ol_flags & PKT_TX_IP_CKSUM) &&
337 (queue_offloads & DEV_TX_OFFLOAD_IPV4_CKSUM))
338 ena_tx_ctx->l3_csum_enable = true;
340 if (mbuf->ol_flags & PKT_TX_IPV6) {
341 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
343 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
345 /* set don't fragment (DF) flag */
346 if (mbuf->packet_type &
347 (RTE_PTYPE_L4_NONFRAG
348 | RTE_PTYPE_INNER_L4_NONFRAG))
349 ena_tx_ctx->df = true;
352 /* check if L4 checksum is needed */
353 if ((mbuf->ol_flags & PKT_TX_TCP_CKSUM) &&
354 (queue_offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) {
355 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
356 ena_tx_ctx->l4_csum_enable = true;
357 } else if ((mbuf->ol_flags & PKT_TX_UDP_CKSUM) &&
358 (queue_offloads & DEV_TX_OFFLOAD_UDP_CKSUM)) {
359 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
360 ena_tx_ctx->l4_csum_enable = true;
362 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
363 ena_tx_ctx->l4_csum_enable = false;
366 ena_meta->mss = mbuf->tso_segsz;
367 ena_meta->l3_hdr_len = mbuf->l3_len;
368 ena_meta->l3_hdr_offset = mbuf->l2_len;
370 ena_tx_ctx->meta_valid = true;
372 ena_tx_ctx->meta_valid = false;
376 static inline int validate_rx_req_id(struct ena_ring *rx_ring, uint16_t req_id)
378 if (likely(req_id < rx_ring->ring_size))
381 RTE_LOG(ERR, PMD, "Invalid rx req_id: %hu\n", req_id);
383 rx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_RX_REQ_ID;
384 rx_ring->adapter->trigger_reset = true;
389 static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id)
391 struct ena_tx_buffer *tx_info = NULL;
393 if (likely(req_id < tx_ring->ring_size)) {
394 tx_info = &tx_ring->tx_buffer_info[req_id];
395 if (likely(tx_info->mbuf))
400 RTE_LOG(ERR, PMD, "tx_info doesn't have valid mbuf\n");
402 RTE_LOG(ERR, PMD, "Invalid req_id: %hu\n", req_id);
404 /* Trigger device reset */
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 RTE_LOG(ERR, PMD, "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 snprintf((char *)host_info->kernel_ver_str,
427 sizeof(host_info->kernel_ver_str),
428 "%s", rte_version());
429 host_info->os_dist = RTE_VERSION;
430 snprintf((char *)host_info->os_dist_str,
431 sizeof(host_info->os_dist_str),
432 "%s", rte_version());
433 host_info->driver_version =
434 (DRV_MODULE_VER_MAJOR) |
435 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
436 (DRV_MODULE_VER_SUBMINOR <<
437 ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
439 rc = ena_com_set_host_attributes(ena_dev);
441 if (rc == -ENA_COM_UNSUPPORTED)
442 RTE_LOG(WARNING, PMD, "Cannot set host attributes\n");
444 RTE_LOG(ERR, PMD, "Cannot set host attributes\n");
452 ena_com_delete_host_info(ena_dev);
456 ena_get_sset_count(struct rte_eth_dev *dev, int sset)
458 if (sset != ETH_SS_STATS)
461 /* Workaround for clang:
462 * touch internal structures to prevent
465 ENA_TOUCH(ena_stats_global_strings);
466 ENA_TOUCH(ena_stats_tx_strings);
467 ENA_TOUCH(ena_stats_rx_strings);
468 ENA_TOUCH(ena_stats_ena_com_strings);
470 return dev->data->nb_tx_queues *
471 (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX) +
472 ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
475 static void ena_config_debug_area(struct ena_adapter *adapter)
480 ss_count = ena_get_sset_count(adapter->rte_dev, ETH_SS_STATS);
482 RTE_LOG(ERR, PMD, "SS count is negative\n");
486 /* allocate 32 bytes for each string and 64bit for the value */
487 debug_area_size = ss_count * ETH_GSTRING_LEN + sizeof(u64) * ss_count;
489 rc = ena_com_allocate_debug_area(&adapter->ena_dev, debug_area_size);
491 RTE_LOG(ERR, PMD, "Cannot allocate debug area\n");
495 rc = ena_com_set_host_attributes(&adapter->ena_dev);
497 if (rc == -ENA_COM_UNSUPPORTED)
498 RTE_LOG(WARNING, PMD, "Cannot set host attributes\n");
500 RTE_LOG(ERR, PMD, "Cannot set host attributes\n");
507 ena_com_delete_debug_area(&adapter->ena_dev);
510 static void ena_close(struct rte_eth_dev *dev)
512 struct ena_adapter *adapter =
513 (struct ena_adapter *)(dev->data->dev_private);
515 if (adapter->state == ENA_ADAPTER_STATE_RUNNING)
517 adapter->state = ENA_ADAPTER_STATE_CLOSED;
519 ena_rx_queue_release_all(dev);
520 ena_tx_queue_release_all(dev);
524 ena_dev_reset(struct rte_eth_dev *dev)
526 struct rte_mempool *mb_pool_rx[ENA_MAX_NUM_QUEUES];
527 struct rte_eth_dev *eth_dev;
528 struct rte_pci_device *pci_dev;
529 struct rte_intr_handle *intr_handle;
530 struct ena_com_dev *ena_dev;
531 struct ena_com_dev_get_features_ctx get_feat_ctx;
532 struct ena_adapter *adapter;
537 adapter = (struct ena_adapter *)(dev->data->dev_private);
538 ena_dev = &adapter->ena_dev;
539 eth_dev = adapter->rte_dev;
540 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
541 intr_handle = &pci_dev->intr_handle;
542 nb_queues = eth_dev->data->nb_rx_queues;
544 ena_com_set_admin_running_state(ena_dev, false);
546 rc = ena_com_dev_reset(ena_dev, adapter->reset_reason);
548 RTE_LOG(ERR, PMD, "Device reset failed\n");
550 for (i = 0; i < nb_queues; i++)
551 mb_pool_rx[i] = adapter->rx_ring[i].mb_pool;
553 ena_rx_queue_release_all(eth_dev);
554 ena_tx_queue_release_all(eth_dev);
556 rte_intr_disable(intr_handle);
558 ena_com_abort_admin_commands(ena_dev);
559 ena_com_wait_for_abort_completion(ena_dev);
560 ena_com_admin_destroy(ena_dev);
561 ena_com_mmio_reg_read_request_destroy(ena_dev);
563 rc = ena_device_init(ena_dev, &get_feat_ctx, &wd_state);
565 PMD_INIT_LOG(CRIT, "Cannot initialize device\n");
568 adapter->wd_state = wd_state;
570 rte_intr_enable(intr_handle);
571 ena_com_set_admin_polling_mode(ena_dev, false);
572 ena_com_admin_aenq_enable(ena_dev);
574 for (i = 0; i < nb_queues; ++i)
575 ena_rx_queue_setup(eth_dev, i, adapter->rx_ring_size, 0, NULL,
578 for (i = 0; i < nb_queues; ++i)
579 ena_tx_queue_setup(eth_dev, i, adapter->tx_ring_size, 0, NULL);
581 adapter->trigger_reset = false;
586 static int ena_rss_reta_update(struct rte_eth_dev *dev,
587 struct rte_eth_rss_reta_entry64 *reta_conf,
590 struct ena_adapter *adapter =
591 (struct ena_adapter *)(dev->data->dev_private);
592 struct ena_com_dev *ena_dev = &adapter->ena_dev;
598 if ((reta_size == 0) || (reta_conf == NULL))
601 if (reta_size > ENA_RX_RSS_TABLE_SIZE) {
602 RTE_LOG(WARNING, PMD,
603 "indirection table %d is bigger than supported (%d)\n",
604 reta_size, ENA_RX_RSS_TABLE_SIZE);
608 for (i = 0 ; i < reta_size ; i++) {
609 /* each reta_conf is for 64 entries.
610 * to support 128 we use 2 conf of 64
612 conf_idx = i / RTE_RETA_GROUP_SIZE;
613 idx = i % RTE_RETA_GROUP_SIZE;
614 if (TEST_BIT(reta_conf[conf_idx].mask, idx)) {
616 ENA_IO_RXQ_IDX(reta_conf[conf_idx].reta[idx]);
618 rc = ena_com_indirect_table_fill_entry(ena_dev,
621 if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
623 "Cannot fill indirect table\n");
629 rc = ena_com_indirect_table_set(ena_dev);
630 if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
631 RTE_LOG(ERR, PMD, "Cannot flush the indirect table\n");
635 RTE_LOG(DEBUG, PMD, "%s(): RSS configured %d entries for port %d\n",
636 __func__, reta_size, adapter->rte_dev->data->port_id);
641 /* Query redirection table. */
642 static int ena_rss_reta_query(struct rte_eth_dev *dev,
643 struct rte_eth_rss_reta_entry64 *reta_conf,
646 struct ena_adapter *adapter =
647 (struct ena_adapter *)(dev->data->dev_private);
648 struct ena_com_dev *ena_dev = &adapter->ena_dev;
651 u32 indirect_table[ENA_RX_RSS_TABLE_SIZE] = {0};
655 if (reta_size == 0 || reta_conf == NULL ||
656 (reta_size > RTE_RETA_GROUP_SIZE && ((reta_conf + 1) == NULL)))
659 rc = ena_com_indirect_table_get(ena_dev, indirect_table);
660 if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
661 RTE_LOG(ERR, PMD, "cannot get indirect table\n");
665 for (i = 0 ; i < reta_size ; i++) {
666 reta_conf_idx = i / RTE_RETA_GROUP_SIZE;
667 reta_idx = i % RTE_RETA_GROUP_SIZE;
668 if (TEST_BIT(reta_conf[reta_conf_idx].mask, reta_idx))
669 reta_conf[reta_conf_idx].reta[reta_idx] =
670 ENA_IO_RXQ_IDX_REV(indirect_table[i]);
676 static int ena_rss_init_default(struct ena_adapter *adapter)
678 struct ena_com_dev *ena_dev = &adapter->ena_dev;
679 uint16_t nb_rx_queues = adapter->rte_dev->data->nb_rx_queues;
683 rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
685 RTE_LOG(ERR, PMD, "Cannot init indirect table\n");
689 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
690 val = i % nb_rx_queues;
691 rc = ena_com_indirect_table_fill_entry(ena_dev, i,
692 ENA_IO_RXQ_IDX(val));
693 if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
694 RTE_LOG(ERR, PMD, "Cannot fill indirect table\n");
699 rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL,
700 ENA_HASH_KEY_SIZE, 0xFFFFFFFF);
701 if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
702 RTE_LOG(INFO, PMD, "Cannot fill hash function\n");
706 rc = ena_com_set_default_hash_ctrl(ena_dev);
707 if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
708 RTE_LOG(INFO, PMD, "Cannot fill hash control\n");
712 rc = ena_com_indirect_table_set(ena_dev);
713 if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
714 RTE_LOG(ERR, PMD, "Cannot flush the indirect table\n");
717 RTE_LOG(DEBUG, PMD, "RSS configured for port %d\n",
718 adapter->rte_dev->data->port_id);
723 ena_com_rss_destroy(ena_dev);
729 static void ena_rx_queue_release_all(struct rte_eth_dev *dev)
731 struct ena_ring **queues = (struct ena_ring **)dev->data->rx_queues;
732 int nb_queues = dev->data->nb_rx_queues;
735 for (i = 0; i < nb_queues; i++)
736 ena_rx_queue_release(queues[i]);
739 static void ena_tx_queue_release_all(struct rte_eth_dev *dev)
741 struct ena_ring **queues = (struct ena_ring **)dev->data->tx_queues;
742 int nb_queues = dev->data->nb_tx_queues;
745 for (i = 0; i < nb_queues; i++)
746 ena_tx_queue_release(queues[i]);
749 static void ena_rx_queue_release(void *queue)
751 struct ena_ring *ring = (struct ena_ring *)queue;
753 ena_assert_msg(ring->configured,
754 "API violation - releasing not configured queue");
755 ena_assert_msg(ring->adapter->state != ENA_ADAPTER_STATE_RUNNING,
758 /* Free ring resources */
759 if (ring->rx_buffer_info)
760 rte_free(ring->rx_buffer_info);
761 ring->rx_buffer_info = NULL;
763 if (ring->empty_rx_reqs)
764 rte_free(ring->empty_rx_reqs);
765 ring->empty_rx_reqs = NULL;
767 ring->configured = 0;
769 RTE_LOG(NOTICE, PMD, "RX Queue %d:%d released\n",
770 ring->port_id, ring->id);
773 static void ena_tx_queue_release(void *queue)
775 struct ena_ring *ring = (struct ena_ring *)queue;
777 ena_assert_msg(ring->configured,
778 "API violation. Releasing not configured queue");
779 ena_assert_msg(ring->adapter->state != ENA_ADAPTER_STATE_RUNNING,
783 ena_tx_queue_release_bufs(ring);
785 /* Free ring resources */
786 if (ring->tx_buffer_info)
787 rte_free(ring->tx_buffer_info);
789 if (ring->empty_tx_reqs)
790 rte_free(ring->empty_tx_reqs);
792 ring->empty_tx_reqs = NULL;
793 ring->tx_buffer_info = NULL;
795 ring->configured = 0;
797 RTE_LOG(NOTICE, PMD, "TX Queue %d:%d released\n",
798 ring->port_id, ring->id);
801 static void ena_rx_queue_release_bufs(struct ena_ring *ring)
803 unsigned int ring_mask = ring->ring_size - 1;
805 while (ring->next_to_clean != ring->next_to_use) {
807 ring->rx_buffer_info[ring->next_to_clean & ring_mask];
810 rte_mbuf_raw_free(m);
812 ring->next_to_clean++;
816 static void ena_tx_queue_release_bufs(struct ena_ring *ring)
820 for (i = 0; i < ring->ring_size; ++i) {
821 struct ena_tx_buffer *tx_buf = &ring->tx_buffer_info[i];
824 rte_pktmbuf_free(tx_buf->mbuf);
826 ring->next_to_clean++;
830 static int ena_link_update(struct rte_eth_dev *dev,
831 __rte_unused int wait_to_complete)
833 struct rte_eth_link *link = &dev->data->dev_link;
834 struct ena_adapter *adapter;
836 adapter = (struct ena_adapter *)(dev->data->dev_private);
838 link->link_status = adapter->link_status ? ETH_LINK_UP : ETH_LINK_DOWN;
839 link->link_speed = ETH_SPEED_NUM_NONE;
840 link->link_duplex = ETH_LINK_FULL_DUPLEX;
845 static int ena_queue_restart_all(struct rte_eth_dev *dev,
846 enum ena_ring_type ring_type)
848 struct ena_adapter *adapter =
849 (struct ena_adapter *)(dev->data->dev_private);
850 struct ena_ring *queues = NULL;
855 if (ring_type == ENA_RING_TYPE_RX) {
856 queues = adapter->rx_ring;
857 nb_queues = dev->data->nb_rx_queues;
859 queues = adapter->tx_ring;
860 nb_queues = dev->data->nb_tx_queues;
862 for (i = 0; i < nb_queues; i++) {
863 if (queues[i].configured) {
864 if (ring_type == ENA_RING_TYPE_RX) {
866 dev->data->rx_queues[i] == &queues[i],
867 "Inconsistent state of rx queues\n");
870 dev->data->tx_queues[i] == &queues[i],
871 "Inconsistent state of tx queues\n");
874 rc = ena_queue_restart(&queues[i]);
878 "failed to restart queue %d type(%d)",
888 static uint32_t ena_get_mtu_conf(struct ena_adapter *adapter)
890 uint32_t max_frame_len = adapter->max_mtu;
892 if (adapter->rte_eth_dev_data->dev_conf.rxmode.offloads &
893 DEV_RX_OFFLOAD_JUMBO_FRAME)
895 adapter->rte_eth_dev_data->dev_conf.rxmode.max_rx_pkt_len;
897 return max_frame_len;
900 static int ena_check_valid_conf(struct ena_adapter *adapter)
902 uint32_t max_frame_len = ena_get_mtu_conf(adapter);
904 if (max_frame_len > adapter->max_mtu || max_frame_len < ENA_MIN_MTU) {
905 PMD_INIT_LOG(ERR, "Unsupported MTU of %d. "
906 "max mtu: %d, min mtu: %d\n",
907 max_frame_len, adapter->max_mtu, ENA_MIN_MTU);
908 return ENA_COM_UNSUPPORTED;
915 ena_calc_queue_size(struct ena_com_dev *ena_dev,
916 u16 *max_tx_sgl_size,
917 struct ena_com_dev_get_features_ctx *get_feat_ctx)
919 uint32_t queue_size = ENA_DEFAULT_RING_SIZE;
921 queue_size = RTE_MIN(queue_size,
922 get_feat_ctx->max_queues.max_cq_depth);
923 queue_size = RTE_MIN(queue_size,
924 get_feat_ctx->max_queues.max_sq_depth);
926 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
927 queue_size = RTE_MIN(queue_size,
928 get_feat_ctx->max_queues.max_llq_depth);
930 /* Round down to power of 2 */
931 if (!rte_is_power_of_2(queue_size))
932 queue_size = rte_align32pow2(queue_size >> 1);
934 if (unlikely(queue_size == 0)) {
935 PMD_INIT_LOG(ERR, "Invalid queue size");
939 *max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
940 get_feat_ctx->max_queues.max_packet_tx_descs);
945 static void ena_stats_restart(struct rte_eth_dev *dev)
947 struct ena_adapter *adapter =
948 (struct ena_adapter *)(dev->data->dev_private);
950 rte_atomic64_init(&adapter->drv_stats->ierrors);
951 rte_atomic64_init(&adapter->drv_stats->oerrors);
952 rte_atomic64_init(&adapter->drv_stats->rx_nombuf);
955 static int ena_stats_get(struct rte_eth_dev *dev,
956 struct rte_eth_stats *stats)
958 struct ena_admin_basic_stats ena_stats;
959 struct ena_adapter *adapter =
960 (struct ena_adapter *)(dev->data->dev_private);
961 struct ena_com_dev *ena_dev = &adapter->ena_dev;
964 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
967 memset(&ena_stats, 0, sizeof(ena_stats));
968 rc = ena_com_get_dev_basic_stats(ena_dev, &ena_stats);
970 RTE_LOG(ERR, PMD, "Could not retrieve statistics from ENA");
974 /* Set of basic statistics from ENA */
975 stats->ipackets = __MERGE_64B_H_L(ena_stats.rx_pkts_high,
976 ena_stats.rx_pkts_low);
977 stats->opackets = __MERGE_64B_H_L(ena_stats.tx_pkts_high,
978 ena_stats.tx_pkts_low);
979 stats->ibytes = __MERGE_64B_H_L(ena_stats.rx_bytes_high,
980 ena_stats.rx_bytes_low);
981 stats->obytes = __MERGE_64B_H_L(ena_stats.tx_bytes_high,
982 ena_stats.tx_bytes_low);
983 stats->imissed = __MERGE_64B_H_L(ena_stats.rx_drops_high,
984 ena_stats.rx_drops_low);
986 /* Driver related stats */
987 stats->ierrors = rte_atomic64_read(&adapter->drv_stats->ierrors);
988 stats->oerrors = rte_atomic64_read(&adapter->drv_stats->oerrors);
989 stats->rx_nombuf = rte_atomic64_read(&adapter->drv_stats->rx_nombuf);
993 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
995 struct ena_adapter *adapter;
996 struct ena_com_dev *ena_dev;
999 ena_assert_msg(dev->data != NULL, "Uninitialized device");
1000 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device");
1001 adapter = (struct ena_adapter *)(dev->data->dev_private);
1003 ena_dev = &adapter->ena_dev;
1004 ena_assert_msg(ena_dev != NULL, "Uninitialized device");
1006 if (mtu > ena_get_mtu_conf(adapter) || mtu < ENA_MIN_MTU) {
1008 "Invalid MTU setting. new_mtu: %d "
1009 "max mtu: %d min mtu: %d\n",
1010 mtu, ena_get_mtu_conf(adapter), ENA_MIN_MTU);
1014 rc = ena_com_set_dev_mtu(ena_dev, mtu);
1016 RTE_LOG(ERR, PMD, "Could not set MTU: %d\n", mtu);
1018 RTE_LOG(NOTICE, PMD, "Set MTU: %d\n", mtu);
1023 static int ena_start(struct rte_eth_dev *dev)
1025 struct ena_adapter *adapter =
1026 (struct ena_adapter *)(dev->data->dev_private);
1030 rc = ena_check_valid_conf(adapter);
1034 rc = ena_queue_restart_all(dev, ENA_RING_TYPE_RX);
1038 rc = ena_queue_restart_all(dev, ENA_RING_TYPE_TX);
1042 if (adapter->rte_dev->data->dev_conf.rxmode.mq_mode &
1043 ETH_MQ_RX_RSS_FLAG && adapter->rte_dev->data->nb_rx_queues > 0) {
1044 rc = ena_rss_init_default(adapter);
1049 ena_stats_restart(dev);
1051 adapter->timestamp_wd = rte_get_timer_cycles();
1052 adapter->keep_alive_timeout = ENA_DEVICE_KALIVE_TIMEOUT;
1054 ticks = rte_get_timer_hz();
1055 rte_timer_reset(&adapter->timer_wd, ticks, PERIODICAL, rte_lcore_id(),
1056 ena_timer_wd_callback, adapter);
1058 adapter->state = ENA_ADAPTER_STATE_RUNNING;
1063 static void ena_stop(struct rte_eth_dev *dev)
1065 struct ena_adapter *adapter =
1066 (struct ena_adapter *)(dev->data->dev_private);
1068 rte_timer_stop_sync(&adapter->timer_wd);
1069 ena_free_io_queues_all(adapter);
1071 adapter->state = ENA_ADAPTER_STATE_STOPPED;
1074 static int ena_create_io_queue(struct ena_ring *ring)
1076 struct ena_adapter *adapter;
1077 struct ena_com_dev *ena_dev;
1078 struct ena_com_create_io_ctx ctx =
1079 /* policy set to _HOST just to satisfy icc compiler */
1080 { ENA_ADMIN_PLACEMENT_POLICY_HOST,
1085 adapter = ring->adapter;
1086 ena_dev = &adapter->ena_dev;
1088 if (ring->type == ENA_RING_TYPE_TX) {
1089 ena_qid = ENA_IO_TXQ_IDX(ring->id);
1090 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
1091 ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
1092 ctx.queue_size = adapter->tx_ring_size;
1094 ena_qid = ENA_IO_RXQ_IDX(ring->id);
1095 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
1096 ctx.queue_size = adapter->rx_ring_size;
1099 ctx.msix_vector = -1; /* interrupts not used */
1100 ctx.numa_node = ena_cpu_to_node(ring->id);
1102 rc = ena_com_create_io_queue(ena_dev, &ctx);
1105 "failed to create io queue #%d (qid:%d) rc: %d\n",
1106 ring->id, ena_qid, rc);
1110 rc = ena_com_get_io_handlers(ena_dev, ena_qid,
1111 &ring->ena_com_io_sq,
1112 &ring->ena_com_io_cq);
1115 "Failed to get io queue handlers. queue num %d rc: %d\n",
1117 ena_com_destroy_io_queue(ena_dev, ena_qid);
1121 if (ring->type == ENA_RING_TYPE_TX)
1122 ena_com_update_numa_node(ring->ena_com_io_cq, ctx.numa_node);
1127 static void ena_free_io_queues_all(struct ena_adapter *adapter)
1129 struct rte_eth_dev *eth_dev = adapter->rte_dev;
1130 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1133 uint16_t nb_rxq = eth_dev->data->nb_rx_queues;
1134 uint16_t nb_txq = eth_dev->data->nb_tx_queues;
1136 for (i = 0; i < nb_txq; ++i) {
1137 ena_qid = ENA_IO_TXQ_IDX(i);
1138 ena_com_destroy_io_queue(ena_dev, ena_qid);
1141 for (i = 0; i < nb_rxq; ++i) {
1142 ena_qid = ENA_IO_RXQ_IDX(i);
1143 ena_com_destroy_io_queue(ena_dev, ena_qid);
1145 ena_rx_queue_release_bufs(&adapter->rx_ring[i]);
1149 static int ena_queue_restart(struct ena_ring *ring)
1153 ena_assert_msg(ring->configured == 1,
1154 "Trying to restart unconfigured queue\n");
1156 rc = ena_create_io_queue(ring);
1158 PMD_INIT_LOG(ERR, "Failed to create IO queue!\n");
1162 ring->next_to_clean = 0;
1163 ring->next_to_use = 0;
1165 if (ring->type == ENA_RING_TYPE_TX)
1168 bufs_num = ring->ring_size - 1;
1169 rc = ena_populate_rx_queue(ring, bufs_num);
1170 if (rc != bufs_num) {
1171 PMD_INIT_LOG(ERR, "Failed to populate rx ring !");
1172 return ENA_COM_FAULT;
1178 static int ena_tx_queue_setup(struct rte_eth_dev *dev,
1181 __rte_unused unsigned int socket_id,
1182 const struct rte_eth_txconf *tx_conf)
1184 struct ena_ring *txq = NULL;
1185 struct ena_adapter *adapter =
1186 (struct ena_adapter *)(dev->data->dev_private);
1189 txq = &adapter->tx_ring[queue_idx];
1191 if (txq->configured) {
1193 "API violation. Queue %d is already configured\n",
1195 return ENA_COM_FAULT;
1198 if (!rte_is_power_of_2(nb_desc)) {
1200 "Unsupported size of TX queue: %d is not a power of 2.",
1205 if (nb_desc > adapter->tx_ring_size) {
1207 "Unsupported size of TX queue (max size: %d)\n",
1208 adapter->tx_ring_size);
1212 txq->port_id = dev->data->port_id;
1213 txq->next_to_clean = 0;
1214 txq->next_to_use = 0;
1215 txq->ring_size = nb_desc;
1217 txq->tx_buffer_info = rte_zmalloc("txq->tx_buffer_info",
1218 sizeof(struct ena_tx_buffer) *
1220 RTE_CACHE_LINE_SIZE);
1221 if (!txq->tx_buffer_info) {
1222 RTE_LOG(ERR, PMD, "failed to alloc mem for tx buffer info\n");
1226 txq->empty_tx_reqs = rte_zmalloc("txq->empty_tx_reqs",
1227 sizeof(u16) * txq->ring_size,
1228 RTE_CACHE_LINE_SIZE);
1229 if (!txq->empty_tx_reqs) {
1230 RTE_LOG(ERR, PMD, "failed to alloc mem for tx reqs\n");
1231 rte_free(txq->tx_buffer_info);
1235 for (i = 0; i < txq->ring_size; i++)
1236 txq->empty_tx_reqs[i] = i;
1238 if (tx_conf != NULL) {
1240 tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
1243 /* Store pointer to this queue in upper layer */
1244 txq->configured = 1;
1245 dev->data->tx_queues[queue_idx] = txq;
1250 static int ena_rx_queue_setup(struct rte_eth_dev *dev,
1253 __rte_unused unsigned int socket_id,
1254 __rte_unused const struct rte_eth_rxconf *rx_conf,
1255 struct rte_mempool *mp)
1257 struct ena_adapter *adapter =
1258 (struct ena_adapter *)(dev->data->dev_private);
1259 struct ena_ring *rxq = NULL;
1262 rxq = &adapter->rx_ring[queue_idx];
1263 if (rxq->configured) {
1265 "API violation. Queue %d is already configured\n",
1267 return ENA_COM_FAULT;
1270 if (!rte_is_power_of_2(nb_desc)) {
1272 "Unsupported size of RX queue: %d is not a power of 2.",
1277 if (nb_desc > adapter->rx_ring_size) {
1279 "Unsupported size of RX queue (max size: %d)\n",
1280 adapter->rx_ring_size);
1284 rxq->port_id = dev->data->port_id;
1285 rxq->next_to_clean = 0;
1286 rxq->next_to_use = 0;
1287 rxq->ring_size = nb_desc;
1290 rxq->rx_buffer_info = rte_zmalloc("rxq->buffer_info",
1291 sizeof(struct rte_mbuf *) * nb_desc,
1292 RTE_CACHE_LINE_SIZE);
1293 if (!rxq->rx_buffer_info) {
1294 RTE_LOG(ERR, PMD, "failed to alloc mem for rx buffer info\n");
1298 rxq->empty_rx_reqs = rte_zmalloc("rxq->empty_rx_reqs",
1299 sizeof(uint16_t) * nb_desc,
1300 RTE_CACHE_LINE_SIZE);
1301 if (!rxq->empty_rx_reqs) {
1302 RTE_LOG(ERR, PMD, "failed to alloc mem for empty rx reqs\n");
1303 rte_free(rxq->rx_buffer_info);
1304 rxq->rx_buffer_info = NULL;
1308 for (i = 0; i < nb_desc; i++)
1309 rxq->empty_tx_reqs[i] = i;
1311 /* Store pointer to this queue in upper layer */
1312 rxq->configured = 1;
1313 dev->data->rx_queues[queue_idx] = rxq;
1318 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count)
1322 uint16_t ring_size = rxq->ring_size;
1323 uint16_t ring_mask = ring_size - 1;
1324 uint16_t next_to_use = rxq->next_to_use;
1325 uint16_t in_use, req_id;
1326 struct rte_mbuf **mbufs = &rxq->rx_buffer_info[0];
1328 if (unlikely(!count))
1331 in_use = rxq->next_to_use - rxq->next_to_clean;
1332 ena_assert_msg(((in_use + count) < ring_size), "bad ring state");
1334 count = RTE_MIN(count,
1335 (uint16_t)(ring_size - (next_to_use & ring_mask)));
1337 /* get resources for incoming packets */
1338 rc = rte_mempool_get_bulk(rxq->mb_pool,
1339 (void **)(&mbufs[next_to_use & ring_mask]),
1341 if (unlikely(rc < 0)) {
1342 rte_atomic64_inc(&rxq->adapter->drv_stats->rx_nombuf);
1343 PMD_RX_LOG(DEBUG, "there are no enough free buffers");
1347 for (i = 0; i < count; i++) {
1348 uint16_t next_to_use_masked = next_to_use & ring_mask;
1349 struct rte_mbuf *mbuf = mbufs[next_to_use_masked];
1350 struct ena_com_buf ebuf;
1352 rte_prefetch0(mbufs[((next_to_use + 4) & ring_mask)]);
1354 req_id = rxq->empty_rx_reqs[next_to_use_masked];
1355 rc = validate_rx_req_id(rxq, req_id);
1356 if (unlikely(rc < 0))
1359 /* prepare physical address for DMA transaction */
1360 ebuf.paddr = mbuf->buf_iova + RTE_PKTMBUF_HEADROOM;
1361 ebuf.len = mbuf->buf_len - RTE_PKTMBUF_HEADROOM;
1362 /* pass resource to device */
1363 rc = ena_com_add_single_rx_desc(rxq->ena_com_io_sq,
1366 rte_mempool_put_bulk(rxq->mb_pool, (void **)(&mbuf),
1368 RTE_LOG(WARNING, PMD, "failed adding rx desc\n");
1374 if (unlikely(i < count))
1375 RTE_LOG(WARNING, PMD, "refilled rx qid %d with only %d "
1376 "buffers (from %d)\n", rxq->id, i, count);
1378 /* When we submitted free recources to device... */
1379 if (likely(i > 0)) {
1380 /* ...let HW know that it can fill buffers with data
1382 * Add memory barrier to make sure the desc were written before
1386 ena_com_write_sq_doorbell(rxq->ena_com_io_sq);
1388 rxq->next_to_use = next_to_use;
1394 static int ena_device_init(struct ena_com_dev *ena_dev,
1395 struct ena_com_dev_get_features_ctx *get_feat_ctx,
1398 uint32_t aenq_groups;
1400 bool readless_supported;
1402 /* Initialize mmio registers */
1403 rc = ena_com_mmio_reg_read_request_init(ena_dev);
1405 RTE_LOG(ERR, PMD, "failed to init mmio read less\n");
1409 /* The PCIe configuration space revision id indicate if mmio reg
1412 readless_supported =
1413 !(((struct rte_pci_device *)ena_dev->dmadev)->id.class_id
1414 & ENA_MMIO_DISABLE_REG_READ);
1415 ena_com_set_mmio_read_mode(ena_dev, readless_supported);
1418 rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL);
1420 RTE_LOG(ERR, PMD, "cannot reset device\n");
1421 goto err_mmio_read_less;
1424 /* check FW version */
1425 rc = ena_com_validate_version(ena_dev);
1427 RTE_LOG(ERR, PMD, "device version is too low\n");
1428 goto err_mmio_read_less;
1431 ena_dev->dma_addr_bits = ena_com_get_dma_width(ena_dev);
1433 /* ENA device administration layer init */
1434 rc = ena_com_admin_init(ena_dev, &aenq_handlers, true);
1437 "cannot initialize ena admin queue with device\n");
1438 goto err_mmio_read_less;
1441 /* To enable the msix interrupts the driver needs to know the number
1442 * of queues. So the driver uses polling mode to retrieve this
1445 ena_com_set_admin_polling_mode(ena_dev, true);
1447 ena_config_host_info(ena_dev);
1449 /* Get Device Attributes and features */
1450 rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
1453 "cannot get attribute for ena device rc= %d\n", rc);
1454 goto err_admin_init;
1457 aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
1458 BIT(ENA_ADMIN_NOTIFICATION) |
1459 BIT(ENA_ADMIN_KEEP_ALIVE) |
1460 BIT(ENA_ADMIN_FATAL_ERROR) |
1461 BIT(ENA_ADMIN_WARNING);
1463 aenq_groups &= get_feat_ctx->aenq.supported_groups;
1464 rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
1466 RTE_LOG(ERR, PMD, "Cannot configure aenq groups rc: %d\n", rc);
1467 goto err_admin_init;
1470 *wd_state = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
1475 ena_com_admin_destroy(ena_dev);
1478 ena_com_mmio_reg_read_request_destroy(ena_dev);
1483 static void ena_interrupt_handler_rte(void *cb_arg)
1485 struct ena_adapter *adapter = (struct ena_adapter *)cb_arg;
1486 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1488 ena_com_admin_q_comp_intr_handler(ena_dev);
1489 if (likely(adapter->state != ENA_ADAPTER_STATE_CLOSED))
1490 ena_com_aenq_intr_handler(ena_dev, adapter);
1493 static void check_for_missing_keep_alive(struct ena_adapter *adapter)
1495 if (!adapter->wd_state)
1498 if (adapter->keep_alive_timeout == ENA_HW_HINTS_NO_TIMEOUT)
1501 if (unlikely((rte_get_timer_cycles() - adapter->timestamp_wd) >=
1502 adapter->keep_alive_timeout)) {
1503 RTE_LOG(ERR, PMD, "Keep alive timeout\n");
1504 adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO;
1505 adapter->trigger_reset = true;
1509 /* Check if admin queue is enabled */
1510 static void check_for_admin_com_state(struct ena_adapter *adapter)
1512 if (unlikely(!ena_com_get_admin_running_state(&adapter->ena_dev))) {
1513 RTE_LOG(ERR, PMD, "ENA admin queue is not in running state!\n");
1514 adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO;
1515 adapter->trigger_reset = true;
1519 static void ena_timer_wd_callback(__rte_unused struct rte_timer *timer,
1522 struct ena_adapter *adapter = (struct ena_adapter *)arg;
1523 struct rte_eth_dev *dev = adapter->rte_dev;
1525 check_for_missing_keep_alive(adapter);
1526 check_for_admin_com_state(adapter);
1528 if (unlikely(adapter->trigger_reset)) {
1529 RTE_LOG(ERR, PMD, "Trigger reset is on\n");
1530 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
1535 static int ena_calc_io_queue_num(__rte_unused struct ena_com_dev *ena_dev,
1536 struct ena_com_dev_get_features_ctx *get_feat_ctx)
1538 int io_sq_num, io_cq_num, io_queue_num;
1540 io_sq_num = get_feat_ctx->max_queues.max_sq_num;
1541 io_cq_num = get_feat_ctx->max_queues.max_cq_num;
1543 io_queue_num = RTE_MIN(io_sq_num, io_cq_num);
1545 if (unlikely(io_queue_num == 0)) {
1546 RTE_LOG(ERR, PMD, "Number of IO queues should not be 0\n");
1550 return io_queue_num;
1553 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
1555 struct rte_pci_device *pci_dev;
1556 struct rte_intr_handle *intr_handle;
1557 struct ena_adapter *adapter =
1558 (struct ena_adapter *)(eth_dev->data->dev_private);
1559 struct ena_com_dev *ena_dev = &adapter->ena_dev;
1560 struct ena_com_dev_get_features_ctx get_feat_ctx;
1562 u16 tx_sgl_size = 0;
1564 static int adapters_found;
1567 memset(adapter, 0, sizeof(struct ena_adapter));
1568 ena_dev = &adapter->ena_dev;
1570 eth_dev->dev_ops = &ena_dev_ops;
1571 eth_dev->rx_pkt_burst = ð_ena_recv_pkts;
1572 eth_dev->tx_pkt_burst = ð_ena_xmit_pkts;
1573 eth_dev->tx_pkt_prepare = ð_ena_prep_pkts;
1574 adapter->rte_eth_dev_data = eth_dev->data;
1575 adapter->rte_dev = eth_dev;
1577 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1580 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1581 adapter->pdev = pci_dev;
1583 PMD_INIT_LOG(INFO, "Initializing %x:%x:%x.%d",
1584 pci_dev->addr.domain,
1586 pci_dev->addr.devid,
1587 pci_dev->addr.function);
1589 intr_handle = &pci_dev->intr_handle;
1591 adapter->regs = pci_dev->mem_resource[ENA_REGS_BAR].addr;
1592 adapter->dev_mem_base = pci_dev->mem_resource[ENA_MEM_BAR].addr;
1594 if (!adapter->regs) {
1595 PMD_INIT_LOG(CRIT, "Failed to access registers BAR(%d)",
1600 ena_dev->reg_bar = adapter->regs;
1601 ena_dev->dmadev = adapter->pdev;
1603 adapter->id_number = adapters_found;
1605 snprintf(adapter->name, ENA_NAME_MAX_LEN, "ena_%d",
1606 adapter->id_number);
1608 /* device specific initialization routine */
1609 rc = ena_device_init(ena_dev, &get_feat_ctx, &wd_state);
1611 PMD_INIT_LOG(CRIT, "Failed to init ENA device");
1614 adapter->wd_state = wd_state;
1616 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1617 adapter->num_queues = ena_calc_io_queue_num(ena_dev,
1620 queue_size = ena_calc_queue_size(ena_dev, &tx_sgl_size, &get_feat_ctx);
1621 if (queue_size <= 0 || adapter->num_queues <= 0) {
1623 goto err_device_destroy;
1626 adapter->tx_ring_size = queue_size;
1627 adapter->rx_ring_size = queue_size;
1629 adapter->max_tx_sgl_size = tx_sgl_size;
1631 /* prepare ring structures */
1632 ena_init_rings(adapter);
1634 ena_config_debug_area(adapter);
1636 /* Set max MTU for this device */
1637 adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu;
1639 /* set device support for TSO */
1640 adapter->tso4_supported = get_feat_ctx.offload.tx &
1641 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK;
1643 /* Copy MAC address and point DPDK to it */
1644 eth_dev->data->mac_addrs = (struct ether_addr *)adapter->mac_addr;
1645 ether_addr_copy((struct ether_addr *)get_feat_ctx.dev_attr.mac_addr,
1646 (struct ether_addr *)adapter->mac_addr);
1648 adapter->drv_stats = rte_zmalloc("adapter stats",
1649 sizeof(*adapter->drv_stats),
1650 RTE_CACHE_LINE_SIZE);
1651 if (!adapter->drv_stats) {
1652 RTE_LOG(ERR, PMD, "failed to alloc mem for adapter stats\n");
1654 goto err_delete_debug_area;
1657 rte_intr_callback_register(intr_handle,
1658 ena_interrupt_handler_rte,
1660 rte_intr_enable(intr_handle);
1661 ena_com_set_admin_polling_mode(ena_dev, false);
1662 ena_com_admin_aenq_enable(ena_dev);
1664 if (adapters_found == 0)
1665 rte_timer_subsystem_init();
1666 rte_timer_init(&adapter->timer_wd);
1669 adapter->state = ENA_ADAPTER_STATE_INIT;
1673 err_delete_debug_area:
1674 ena_com_delete_debug_area(ena_dev);
1677 ena_com_delete_host_info(ena_dev);
1678 ena_com_admin_destroy(ena_dev);
1684 static int eth_ena_dev_uninit(struct rte_eth_dev *eth_dev)
1686 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1687 struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
1688 struct ena_adapter *adapter =
1689 (struct ena_adapter *)(eth_dev->data->dev_private);
1691 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1694 if (adapter->state != ENA_ADAPTER_STATE_CLOSED)
1697 eth_dev->dev_ops = NULL;
1698 eth_dev->rx_pkt_burst = NULL;
1699 eth_dev->tx_pkt_burst = NULL;
1700 eth_dev->tx_pkt_prepare = NULL;
1702 rte_free(adapter->drv_stats);
1703 adapter->drv_stats = NULL;
1705 rte_intr_disable(intr_handle);
1706 rte_intr_callback_unregister(intr_handle,
1707 ena_interrupt_handler_rte,
1710 adapter->state = ENA_ADAPTER_STATE_FREE;
1715 static int ena_dev_configure(struct rte_eth_dev *dev)
1717 struct ena_adapter *adapter =
1718 (struct ena_adapter *)(dev->data->dev_private);
1720 adapter->state = ENA_ADAPTER_STATE_CONFIG;
1722 adapter->tx_selected_offloads = dev->data->dev_conf.txmode.offloads;
1723 adapter->rx_selected_offloads = dev->data->dev_conf.rxmode.offloads;
1727 static void ena_init_rings(struct ena_adapter *adapter)
1731 for (i = 0; i < adapter->num_queues; i++) {
1732 struct ena_ring *ring = &adapter->tx_ring[i];
1734 ring->configured = 0;
1735 ring->type = ENA_RING_TYPE_TX;
1736 ring->adapter = adapter;
1738 ring->tx_mem_queue_type = adapter->ena_dev.tx_mem_queue_type;
1739 ring->tx_max_header_size = adapter->ena_dev.tx_max_header_size;
1740 ring->sgl_size = adapter->max_tx_sgl_size;
1743 for (i = 0; i < adapter->num_queues; i++) {
1744 struct ena_ring *ring = &adapter->rx_ring[i];
1746 ring->configured = 0;
1747 ring->type = ENA_RING_TYPE_RX;
1748 ring->adapter = adapter;
1753 static void ena_infos_get(struct rte_eth_dev *dev,
1754 struct rte_eth_dev_info *dev_info)
1756 struct ena_adapter *adapter;
1757 struct ena_com_dev *ena_dev;
1758 struct ena_com_dev_get_features_ctx feat;
1759 uint64_t rx_feat = 0, tx_feat = 0;
1762 ena_assert_msg(dev->data != NULL, "Uninitialized device");
1763 ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device");
1764 adapter = (struct ena_adapter *)(dev->data->dev_private);
1766 ena_dev = &adapter->ena_dev;
1767 ena_assert_msg(ena_dev != NULL, "Uninitialized device");
1769 dev_info->speed_capa =
1771 ETH_LINK_SPEED_2_5G |
1773 ETH_LINK_SPEED_10G |
1774 ETH_LINK_SPEED_25G |
1775 ETH_LINK_SPEED_40G |
1776 ETH_LINK_SPEED_50G |
1777 ETH_LINK_SPEED_100G;
1779 /* Get supported features from HW */
1780 rc = ena_com_get_dev_attr_feat(ena_dev, &feat);
1783 "Cannot get attribute for ena device rc= %d\n", rc);
1787 /* Set Tx & Rx features available for device */
1788 if (feat.offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
1789 tx_feat |= DEV_TX_OFFLOAD_TCP_TSO;
1791 if (feat.offload.tx &
1792 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)
1793 tx_feat |= DEV_TX_OFFLOAD_IPV4_CKSUM |
1794 DEV_TX_OFFLOAD_UDP_CKSUM |
1795 DEV_TX_OFFLOAD_TCP_CKSUM;
1797 if (feat.offload.rx_supported &
1798 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK)
1799 rx_feat |= DEV_RX_OFFLOAD_IPV4_CKSUM |
1800 DEV_RX_OFFLOAD_UDP_CKSUM |
1801 DEV_RX_OFFLOAD_TCP_CKSUM;
1803 rx_feat |= DEV_RX_OFFLOAD_JUMBO_FRAME;
1805 /* Inform framework about available features */
1806 dev_info->rx_offload_capa = rx_feat;
1807 dev_info->rx_queue_offload_capa = rx_feat;
1808 dev_info->tx_offload_capa = tx_feat;
1809 dev_info->tx_queue_offload_capa = tx_feat;
1811 dev_info->min_rx_bufsize = ENA_MIN_FRAME_LEN;
1812 dev_info->max_rx_pktlen = adapter->max_mtu;
1813 dev_info->max_mac_addrs = 1;
1815 dev_info->max_rx_queues = adapter->num_queues;
1816 dev_info->max_tx_queues = adapter->num_queues;
1817 dev_info->reta_size = ENA_RX_RSS_TABLE_SIZE;
1819 adapter->tx_supported_offloads = tx_feat;
1820 adapter->rx_supported_offloads = rx_feat;
1822 dev_info->rx_desc_lim.nb_max = ENA_MAX_RING_DESC;
1823 dev_info->rx_desc_lim.nb_min = ENA_MIN_RING_DESC;
1825 dev_info->tx_desc_lim.nb_max = ENA_MAX_RING_DESC;
1826 dev_info->tx_desc_lim.nb_min = ENA_MIN_RING_DESC;
1827 dev_info->tx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
1828 feat.max_queues.max_packet_tx_descs);
1829 dev_info->tx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
1830 feat.max_queues.max_packet_tx_descs);
1833 static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1836 struct ena_ring *rx_ring = (struct ena_ring *)(rx_queue);
1837 unsigned int ring_size = rx_ring->ring_size;
1838 unsigned int ring_mask = ring_size - 1;
1839 uint16_t next_to_clean = rx_ring->next_to_clean;
1840 uint16_t desc_in_use = 0;
1842 unsigned int recv_idx = 0;
1843 struct rte_mbuf *mbuf = NULL;
1844 struct rte_mbuf *mbuf_head = NULL;
1845 struct rte_mbuf *mbuf_prev = NULL;
1846 struct rte_mbuf **rx_buff_info = rx_ring->rx_buffer_info;
1847 unsigned int completed;
1849 struct ena_com_rx_ctx ena_rx_ctx;
1852 /* Check adapter state */
1853 if (unlikely(rx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
1855 "Trying to receive pkts while device is NOT running\n");
1859 desc_in_use = rx_ring->next_to_use - next_to_clean;
1860 if (unlikely(nb_pkts > desc_in_use))
1861 nb_pkts = desc_in_use;
1863 for (completed = 0; completed < nb_pkts; completed++) {
1866 ena_rx_ctx.max_bufs = rx_ring->ring_size;
1867 ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
1868 ena_rx_ctx.descs = 0;
1869 /* receive packet context */
1870 rc = ena_com_rx_pkt(rx_ring->ena_com_io_cq,
1871 rx_ring->ena_com_io_sq,
1874 RTE_LOG(ERR, PMD, "ena_com_rx_pkt error %d\n", rc);
1875 rx_ring->adapter->trigger_reset = true;
1879 if (unlikely(ena_rx_ctx.descs == 0))
1882 while (segments < ena_rx_ctx.descs) {
1883 req_id = ena_rx_ctx.ena_bufs[segments].req_id;
1884 rc = validate_rx_req_id(rx_ring, req_id);
1888 mbuf = rx_buff_info[req_id];
1889 mbuf->data_len = ena_rx_ctx.ena_bufs[segments].len;
1890 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
1893 if (unlikely(segments == 0)) {
1894 mbuf->nb_segs = ena_rx_ctx.descs;
1895 mbuf->port = rx_ring->port_id;
1899 /* for multi-segment pkts create mbuf chain */
1900 mbuf_prev->next = mbuf;
1902 mbuf_head->pkt_len += mbuf->data_len;
1905 rx_ring->empty_rx_reqs[next_to_clean & ring_mask] =
1911 /* fill mbuf attributes if any */
1912 ena_rx_mbuf_prepare(mbuf_head, &ena_rx_ctx);
1913 mbuf_head->hash.rss = ena_rx_ctx.hash;
1915 /* pass to DPDK application head mbuf */
1916 rx_pkts[recv_idx] = mbuf_head;
1920 rx_ring->next_to_clean = next_to_clean;
1922 desc_in_use = desc_in_use - completed + 1;
1923 /* Burst refill to save doorbells, memory barriers, const interval */
1924 if (ring_size - desc_in_use > ENA_RING_DESCS_RATIO(ring_size))
1925 ena_populate_rx_queue(rx_ring, ring_size - desc_in_use);
1931 eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
1937 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
1938 struct ipv4_hdr *ip_hdr;
1940 uint16_t frag_field;
1942 for (i = 0; i != nb_pkts; i++) {
1944 ol_flags = m->ol_flags;
1946 if (!(ol_flags & PKT_TX_IPV4))
1949 /* If there was not L2 header length specified, assume it is
1950 * length of the ethernet header.
1952 if (unlikely(m->l2_len == 0))
1953 m->l2_len = sizeof(struct ether_hdr);
1955 ip_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
1957 frag_field = rte_be_to_cpu_16(ip_hdr->fragment_offset);
1959 if ((frag_field & IPV4_HDR_DF_FLAG) != 0) {
1960 m->packet_type |= RTE_PTYPE_L4_NONFRAG;
1962 /* If IPv4 header has DF flag enabled and TSO support is
1963 * disabled, partial chcecksum should not be calculated.
1965 if (!tx_ring->adapter->tso4_supported)
1969 if ((ol_flags & ENA_TX_OFFLOAD_NOTSUP_MASK) != 0 ||
1970 (ol_flags & PKT_TX_L4_MASK) ==
1971 PKT_TX_SCTP_CKSUM) {
1972 rte_errno = -ENOTSUP;
1976 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1977 ret = rte_validate_tx_offload(m);
1984 /* In case we are supposed to TSO and have DF not set (DF=0)
1985 * hardware must be provided with partial checksum, otherwise
1986 * it will take care of necessary calculations.
1989 ret = rte_net_intel_cksum_flags_prepare(m,
1990 ol_flags & ~PKT_TX_TCP_SEG);
2000 static void ena_update_hints(struct ena_adapter *adapter,
2001 struct ena_admin_ena_hw_hints *hints)
2003 if (hints->admin_completion_tx_timeout)
2004 adapter->ena_dev.admin_queue.completion_timeout =
2005 hints->admin_completion_tx_timeout * 1000;
2007 if (hints->mmio_read_timeout)
2008 /* convert to usec */
2009 adapter->ena_dev.mmio_read.reg_read_to =
2010 hints->mmio_read_timeout * 1000;
2012 if (hints->driver_watchdog_timeout) {
2013 if (hints->driver_watchdog_timeout == ENA_HW_HINTS_NO_TIMEOUT)
2014 adapter->keep_alive_timeout = ENA_HW_HINTS_NO_TIMEOUT;
2016 // Convert msecs to ticks
2017 adapter->keep_alive_timeout =
2018 (hints->driver_watchdog_timeout *
2019 rte_get_timer_hz()) / 1000;
2023 static int ena_check_and_linearize_mbuf(struct ena_ring *tx_ring,
2024 struct rte_mbuf *mbuf)
2026 int num_segments, rc;
2028 num_segments = mbuf->nb_segs;
2030 if (likely(num_segments < tx_ring->sgl_size))
2033 rc = rte_pktmbuf_linearize(mbuf);
2035 RTE_LOG(WARNING, PMD, "Mbuf linearize failed\n");
2040 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2043 struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2044 uint16_t next_to_use = tx_ring->next_to_use;
2045 uint16_t next_to_clean = tx_ring->next_to_clean;
2046 struct rte_mbuf *mbuf;
2047 unsigned int ring_size = tx_ring->ring_size;
2048 unsigned int ring_mask = ring_size - 1;
2049 struct ena_com_tx_ctx ena_tx_ctx;
2050 struct ena_tx_buffer *tx_info;
2051 struct ena_com_buf *ebuf;
2052 uint16_t rc, req_id, total_tx_descs = 0;
2053 uint16_t sent_idx = 0, empty_tx_reqs;
2056 /* Check adapter state */
2057 if (unlikely(tx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2059 "Trying to xmit pkts while device is NOT running\n");
2063 empty_tx_reqs = ring_size - (next_to_use - next_to_clean);
2064 if (nb_pkts > empty_tx_reqs)
2065 nb_pkts = empty_tx_reqs;
2067 for (sent_idx = 0; sent_idx < nb_pkts; sent_idx++) {
2068 mbuf = tx_pkts[sent_idx];
2070 rc = ena_check_and_linearize_mbuf(tx_ring, mbuf);
2074 req_id = tx_ring->empty_tx_reqs[next_to_use & ring_mask];
2075 tx_info = &tx_ring->tx_buffer_info[req_id];
2076 tx_info->mbuf = mbuf;
2077 tx_info->num_of_bufs = 0;
2078 ebuf = tx_info->bufs;
2080 /* Prepare TX context */
2081 memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx));
2082 memset(&ena_tx_ctx.ena_meta, 0x0,
2083 sizeof(struct ena_com_tx_meta));
2084 ena_tx_ctx.ena_bufs = ebuf;
2085 ena_tx_ctx.req_id = req_id;
2086 if (tx_ring->tx_mem_queue_type ==
2087 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
2088 /* prepare the push buffer with
2089 * virtual address of the data
2091 ena_tx_ctx.header_len =
2092 RTE_MIN(mbuf->data_len,
2093 tx_ring->tx_max_header_size);
2094 ena_tx_ctx.push_header =
2095 (void *)((char *)mbuf->buf_addr +
2097 } /* there's no else as we take advantage of memset zeroing */
2099 /* Set TX offloads flags, if applicable */
2100 ena_tx_mbuf_prepare(mbuf, &ena_tx_ctx, tx_ring->offloads);
2102 if (unlikely(mbuf->ol_flags &
2103 (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD)))
2104 rte_atomic64_inc(&tx_ring->adapter->drv_stats->ierrors);
2106 rte_prefetch0(tx_pkts[(sent_idx + 4) & ring_mask]);
2108 /* Process first segment taking into
2109 * consideration pushed header
2111 if (mbuf->data_len > ena_tx_ctx.header_len) {
2112 ebuf->paddr = mbuf->buf_iova +
2114 ena_tx_ctx.header_len;
2115 ebuf->len = mbuf->data_len - ena_tx_ctx.header_len;
2117 tx_info->num_of_bufs++;
2120 while ((mbuf = mbuf->next) != NULL) {
2121 ebuf->paddr = mbuf->buf_iova + mbuf->data_off;
2122 ebuf->len = mbuf->data_len;
2124 tx_info->num_of_bufs++;
2127 ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
2129 /* Write data to device */
2130 rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq,
2131 &ena_tx_ctx, &nb_hw_desc);
2135 tx_info->tx_descs = nb_hw_desc;
2140 /* If there are ready packets to be xmitted... */
2142 /* ...let HW do its best :-) */
2144 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2146 tx_ring->next_to_use = next_to_use;
2149 /* Clear complete packets */
2150 while (ena_com_tx_comp_req_id_get(tx_ring->ena_com_io_cq, &req_id) >= 0) {
2151 rc = validate_tx_req_id(tx_ring, req_id);
2155 /* Get Tx info & store how many descs were processed */
2156 tx_info = &tx_ring->tx_buffer_info[req_id];
2157 total_tx_descs += tx_info->tx_descs;
2159 /* Free whole mbuf chain */
2160 mbuf = tx_info->mbuf;
2161 rte_pktmbuf_free(mbuf);
2162 tx_info->mbuf = NULL;
2164 /* Put back descriptor to the ring for reuse */
2165 tx_ring->empty_tx_reqs[next_to_clean & ring_mask] = req_id;
2168 /* If too many descs to clean, leave it for another run */
2169 if (unlikely(total_tx_descs > ENA_RING_DESCS_RATIO(ring_size)))
2173 if (total_tx_descs > 0) {
2174 /* acknowledge completion of sent packets */
2175 ena_com_comp_ack(tx_ring->ena_com_io_sq, total_tx_descs);
2176 tx_ring->next_to_clean = next_to_clean;
2182 /*********************************************************************
2184 *********************************************************************/
2185 static int eth_ena_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2186 struct rte_pci_device *pci_dev)
2188 return rte_eth_dev_pci_generic_probe(pci_dev,
2189 sizeof(struct ena_adapter), eth_ena_dev_init);
2192 static int eth_ena_pci_remove(struct rte_pci_device *pci_dev)
2194 return rte_eth_dev_pci_generic_remove(pci_dev, eth_ena_dev_uninit);
2197 static struct rte_pci_driver rte_ena_pmd = {
2198 .id_table = pci_id_ena_map,
2199 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
2200 RTE_PCI_DRV_WC_ACTIVATE,
2201 .probe = eth_ena_pci_probe,
2202 .remove = eth_ena_pci_remove,
2205 RTE_PMD_REGISTER_PCI(net_ena, rte_ena_pmd);
2206 RTE_PMD_REGISTER_PCI_TABLE(net_ena, pci_id_ena_map);
2207 RTE_PMD_REGISTER_KMOD_DEP(net_ena, "* igb_uio | uio_pci_generic | vfio-pci");
2209 RTE_INIT(ena_init_log)
2211 ena_logtype_init = rte_log_register("pmd.net.ena.init");
2212 if (ena_logtype_init >= 0)
2213 rte_log_set_level(ena_logtype_init, RTE_LOG_NOTICE);
2214 ena_logtype_driver = rte_log_register("pmd.net.ena.driver");
2215 if (ena_logtype_driver >= 0)
2216 rte_log_set_level(ena_logtype_driver, RTE_LOG_NOTICE);
2219 /******************************************************************************
2220 ******************************** AENQ Handlers *******************************
2221 *****************************************************************************/
2222 static void ena_update_on_link_change(void *adapter_data,
2223 struct ena_admin_aenq_entry *aenq_e)
2225 struct rte_eth_dev *eth_dev;
2226 struct ena_adapter *adapter;
2227 struct ena_admin_aenq_link_change_desc *aenq_link_desc;
2230 adapter = (struct ena_adapter *)adapter_data;
2231 aenq_link_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
2232 eth_dev = adapter->rte_dev;
2234 status = get_ena_admin_aenq_link_change_desc_link_status(aenq_link_desc);
2235 adapter->link_status = status;
2237 ena_link_update(eth_dev, 0);
2238 _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
2241 static void ena_notification(void *data,
2242 struct ena_admin_aenq_entry *aenq_e)
2244 struct ena_adapter *adapter = (struct ena_adapter *)data;
2245 struct ena_admin_ena_hw_hints *hints;
2247 if (aenq_e->aenq_common_desc.group != ENA_ADMIN_NOTIFICATION)
2248 RTE_LOG(WARNING, PMD, "Invalid group(%x) expected %x\n",
2249 aenq_e->aenq_common_desc.group,
2250 ENA_ADMIN_NOTIFICATION);
2252 switch (aenq_e->aenq_common_desc.syndrom) {
2253 case ENA_ADMIN_UPDATE_HINTS:
2254 hints = (struct ena_admin_ena_hw_hints *)
2255 (&aenq_e->inline_data_w4);
2256 ena_update_hints(adapter, hints);
2259 RTE_LOG(ERR, PMD, "Invalid aenq notification link state %d\n",
2260 aenq_e->aenq_common_desc.syndrom);
2264 static void ena_keep_alive(void *adapter_data,
2265 __rte_unused struct ena_admin_aenq_entry *aenq_e)
2267 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
2269 adapter->timestamp_wd = rte_get_timer_cycles();
2273 * This handler will called for unknown event group or unimplemented handlers
2275 static void unimplemented_aenq_handler(__rte_unused void *data,
2276 __rte_unused struct ena_admin_aenq_entry *aenq_e)
2278 RTE_LOG(ERR, PMD, "Unknown event was received or event with "
2279 "unimplemented handler\n");
2282 static struct ena_aenq_handlers aenq_handlers = {
2284 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
2285 [ENA_ADMIN_NOTIFICATION] = ena_notification,
2286 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive
2288 .unimplemented_handler = unimplemented_aenq_handler