2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
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8 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer in
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include "ena_eth_com.h"
36 static struct ena_eth_io_rx_cdesc_base *ena_com_get_next_rx_cdesc(
37 struct ena_com_io_cq *io_cq)
39 struct ena_eth_io_rx_cdesc_base *cdesc;
40 u16 expected_phase, head_masked;
43 head_masked = io_cq->head & (io_cq->q_depth - 1);
44 expected_phase = io_cq->phase;
46 cdesc = (struct ena_eth_io_rx_cdesc_base *)(io_cq->cdesc_addr.virt_addr
47 + (head_masked * io_cq->cdesc_entry_size_in_bytes));
49 desc_phase = (READ_ONCE32(cdesc->status) & ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK) >>
50 ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT;
52 if (desc_phase != expected_phase)
55 /* Make sure we read the rest of the descriptor after the phase bit
63 static void *get_sq_desc_regular_queue(struct ena_com_io_sq *io_sq)
68 tail_masked = io_sq->tail & (io_sq->q_depth - 1);
70 offset = tail_masked * io_sq->desc_entry_size;
72 return (void *)((uintptr_t)io_sq->desc_addr.virt_addr + offset);
75 static int ena_com_write_bounce_buffer_to_dev(struct ena_com_io_sq *io_sq,
78 struct ena_com_llq_info *llq_info = &io_sq->llq_info;
83 dst_tail_mask = io_sq->tail & (io_sq->q_depth - 1);
84 dst_offset = dst_tail_mask * llq_info->desc_list_entry_size;
86 if (is_llq_max_tx_burst_exists(io_sq)) {
87 if (unlikely(!io_sq->entries_in_tx_burst_left)) {
88 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
89 "Error: trying to send more packets than tx burst allows\n");
90 return ENA_COM_NO_SPACE;
93 io_sq->entries_in_tx_burst_left--;
94 ena_trc_dbg(ena_com_io_sq_to_ena_dev(io_sq),
95 "Decreasing entries_in_tx_burst_left of queue %d to %d\n",
96 io_sq->qid, io_sq->entries_in_tx_burst_left);
99 /* Make sure everything was written into the bounce buffer before
100 * writing the bounce buffer to the device
104 /* The line is completed. Copy it to dev */
105 ENA_MEMCPY_TO_DEVICE_64(io_sq->desc_addr.pbuf_dev_addr + dst_offset,
107 llq_info->desc_list_entry_size);
111 /* Switch phase bit in case of wrap around */
112 if (unlikely((io_sq->tail & (io_sq->q_depth - 1)) == 0))
118 static int ena_com_write_header_to_bounce(struct ena_com_io_sq *io_sq,
122 struct ena_com_llq_pkt_ctrl *pkt_ctrl = &io_sq->llq_buf_ctrl;
123 struct ena_com_llq_info *llq_info = &io_sq->llq_info;
124 u8 *bounce_buffer = pkt_ctrl->curr_bounce_buf;
127 if (unlikely(io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST))
131 llq_info->descs_num_before_header * io_sq->desc_entry_size;
133 if (unlikely((header_offset + header_len) > llq_info->desc_list_entry_size)) {
134 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
135 "Trying to write header larger than llq entry can accommodate\n");
136 return ENA_COM_FAULT;
139 if (unlikely(!bounce_buffer)) {
140 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
141 "Bounce buffer is NULL\n");
142 return ENA_COM_FAULT;
145 memcpy(bounce_buffer + header_offset, header_src, header_len);
150 static void *get_sq_desc_llq(struct ena_com_io_sq *io_sq)
152 struct ena_com_llq_pkt_ctrl *pkt_ctrl = &io_sq->llq_buf_ctrl;
156 bounce_buffer = pkt_ctrl->curr_bounce_buf;
158 if (unlikely(!bounce_buffer)) {
159 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
160 "Bounce buffer is NULL\n");
164 sq_desc = bounce_buffer + pkt_ctrl->idx * io_sq->desc_entry_size;
166 pkt_ctrl->descs_left_in_line--;
171 static int ena_com_close_bounce_buffer(struct ena_com_io_sq *io_sq)
173 struct ena_com_llq_pkt_ctrl *pkt_ctrl = &io_sq->llq_buf_ctrl;
174 struct ena_com_llq_info *llq_info = &io_sq->llq_info;
177 if (unlikely(io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST))
180 /* bounce buffer was used, so write it and get a new one */
182 rc = ena_com_write_bounce_buffer_to_dev(io_sq,
183 pkt_ctrl->curr_bounce_buf);
185 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
186 "Failed to write bounce buffer to device\n");
190 pkt_ctrl->curr_bounce_buf =
191 ena_com_get_next_bounce_buffer(&io_sq->bounce_buf_ctrl);
192 memset(io_sq->llq_buf_ctrl.curr_bounce_buf,
193 0x0, llq_info->desc_list_entry_size);
197 pkt_ctrl->descs_left_in_line = llq_info->descs_num_before_header;
201 static void *get_sq_desc(struct ena_com_io_sq *io_sq)
203 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
204 return get_sq_desc_llq(io_sq);
206 return get_sq_desc_regular_queue(io_sq);
209 static int ena_com_sq_update_llq_tail(struct ena_com_io_sq *io_sq)
211 struct ena_com_llq_pkt_ctrl *pkt_ctrl = &io_sq->llq_buf_ctrl;
212 struct ena_com_llq_info *llq_info = &io_sq->llq_info;
215 if (!pkt_ctrl->descs_left_in_line) {
216 rc = ena_com_write_bounce_buffer_to_dev(io_sq,
217 pkt_ctrl->curr_bounce_buf);
219 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
220 "Failed to write bounce buffer to device\n");
224 pkt_ctrl->curr_bounce_buf =
225 ena_com_get_next_bounce_buffer(&io_sq->bounce_buf_ctrl);
226 memset(io_sq->llq_buf_ctrl.curr_bounce_buf,
227 0x0, llq_info->desc_list_entry_size);
230 if (unlikely(llq_info->desc_stride_ctrl == ENA_ADMIN_SINGLE_DESC_PER_ENTRY))
231 pkt_ctrl->descs_left_in_line = 1;
233 pkt_ctrl->descs_left_in_line =
234 llq_info->desc_list_entry_size / io_sq->desc_entry_size;
240 static int ena_com_sq_update_tail(struct ena_com_io_sq *io_sq)
242 if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
243 return ena_com_sq_update_llq_tail(io_sq);
247 /* Switch phase bit in case of wrap around */
248 if (unlikely((io_sq->tail & (io_sq->q_depth - 1)) == 0))
254 static struct ena_eth_io_rx_cdesc_base *
255 ena_com_rx_cdesc_idx_to_ptr(struct ena_com_io_cq *io_cq, u16 idx)
257 idx &= (io_cq->q_depth - 1);
258 return (struct ena_eth_io_rx_cdesc_base *)
259 ((uintptr_t)io_cq->cdesc_addr.virt_addr +
260 idx * io_cq->cdesc_entry_size_in_bytes);
263 static u16 ena_com_cdesc_rx_pkt_get(struct ena_com_io_cq *io_cq,
264 u16 *first_cdesc_idx)
266 struct ena_eth_io_rx_cdesc_base *cdesc;
267 u16 count = 0, head_masked;
271 cdesc = ena_com_get_next_rx_cdesc(io_cq);
275 ena_com_cq_inc_head(io_cq);
277 last = (READ_ONCE32(cdesc->status) & ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK) >>
278 ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT;
282 *first_cdesc_idx = io_cq->cur_rx_pkt_cdesc_start_idx;
283 count += io_cq->cur_rx_pkt_cdesc_count;
285 head_masked = io_cq->head & (io_cq->q_depth - 1);
287 io_cq->cur_rx_pkt_cdesc_count = 0;
288 io_cq->cur_rx_pkt_cdesc_start_idx = head_masked;
290 ena_trc_dbg(ena_com_io_cq_to_ena_dev(io_cq),
291 "ENA q_id: %d packets were completed. first desc idx %u descs# %d\n",
292 io_cq->qid, *first_cdesc_idx, count);
294 io_cq->cur_rx_pkt_cdesc_count += count;
301 static int ena_com_create_meta(struct ena_com_io_sq *io_sq,
302 struct ena_com_tx_meta *ena_meta)
304 struct ena_eth_io_tx_meta_desc *meta_desc = NULL;
306 meta_desc = get_sq_desc(io_sq);
307 if (unlikely(!meta_desc))
308 return ENA_COM_FAULT;
310 memset(meta_desc, 0x0, sizeof(struct ena_eth_io_tx_meta_desc));
312 meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_DESC_MASK;
314 meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK;
316 /* bits 0-9 of the mss */
317 meta_desc->word2 |= ((u32)ena_meta->mss <<
318 ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT) &
319 ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK;
320 /* bits 10-13 of the mss */
321 meta_desc->len_ctrl |= ((ena_meta->mss >> 10) <<
322 ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT) &
323 ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK;
325 /* Extended meta desc */
326 meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK;
327 meta_desc->len_ctrl |= ((u32)io_sq->phase <<
328 ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT) &
329 ENA_ETH_IO_TX_META_DESC_PHASE_MASK;
331 meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_FIRST_MASK;
332 meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK;
334 meta_desc->word2 |= ena_meta->l3_hdr_len &
335 ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK;
336 meta_desc->word2 |= (ena_meta->l3_hdr_offset <<
337 ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT) &
338 ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK;
340 meta_desc->word2 |= ((u32)ena_meta->l4_hdr_len <<
341 ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT) &
342 ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK;
344 return ena_com_sq_update_tail(io_sq);
347 static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq,
348 struct ena_com_tx_ctx *ena_tx_ctx,
351 struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
353 /* When disable meta caching is set, don't bother to save the meta and
354 * compare it to the stored version, just create the meta
356 if (io_sq->disable_meta_caching) {
357 if (unlikely(!ena_tx_ctx->meta_valid))
358 return ENA_COM_INVAL;
361 return ena_com_create_meta(io_sq, ena_meta);
364 if (ena_com_meta_desc_changed(io_sq, ena_tx_ctx)) {
366 /* Cache the meta desc */
367 memcpy(&io_sq->cached_tx_meta, ena_meta,
368 sizeof(struct ena_com_tx_meta));
369 return ena_com_create_meta(io_sq, ena_meta);
376 static void ena_com_rx_set_flags(struct ena_com_io_cq *io_cq,
377 struct ena_com_rx_ctx *ena_rx_ctx,
378 struct ena_eth_io_rx_cdesc_base *cdesc)
380 ena_rx_ctx->l3_proto = cdesc->status &
381 ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK;
382 ena_rx_ctx->l4_proto =
383 (cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK) >>
384 ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT;
385 ena_rx_ctx->l3_csum_err =
386 !!((cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK) >>
387 ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT);
388 ena_rx_ctx->l4_csum_err =
389 !!((cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK) >>
390 ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT);
391 ena_rx_ctx->l4_csum_checked =
392 !!((cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_CHECKED_MASK) >>
393 ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_CHECKED_SHIFT);
394 ena_rx_ctx->hash = cdesc->hash;
396 (cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK) >>
397 ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT;
399 ena_trc_dbg(ena_com_io_cq_to_ena_dev(io_cq),
400 "l3_proto %d l4_proto %d l3_csum_err %d l4_csum_err %d hash %d frag %d cdesc_status %x\n",
401 ena_rx_ctx->l3_proto,
402 ena_rx_ctx->l4_proto,
403 ena_rx_ctx->l3_csum_err,
404 ena_rx_ctx->l4_csum_err,
410 /*****************************************************************************/
411 /***************************** API **********************************/
412 /*****************************************************************************/
414 int ena_com_prepare_tx(struct ena_com_io_sq *io_sq,
415 struct ena_com_tx_ctx *ena_tx_ctx,
418 struct ena_eth_io_tx_desc *desc = NULL;
419 struct ena_com_buf *ena_bufs = ena_tx_ctx->ena_bufs;
420 void *buffer_to_push = ena_tx_ctx->push_header;
421 u16 header_len = ena_tx_ctx->header_len;
422 u16 num_bufs = ena_tx_ctx->num_bufs;
423 u16 start_tail = io_sq->tail;
428 ENA_WARN(io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_TX,
429 ena_com_io_sq_to_ena_dev(io_sq), "wrong Q type");
431 /* num_bufs +1 for potential meta desc */
432 if (unlikely(!ena_com_sq_have_enough_space(io_sq, num_bufs + 1))) {
433 ena_trc_dbg(ena_com_io_sq_to_ena_dev(io_sq),
434 "Not enough space in the tx queue\n");
435 return ENA_COM_NO_MEM;
438 if (unlikely(header_len > io_sq->tx_max_header_size)) {
439 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
440 "Header size is too large %d max header: %d\n",
441 header_len, io_sq->tx_max_header_size);
442 return ENA_COM_INVAL;
445 if (unlikely(io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV
446 && !buffer_to_push)) {
447 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
448 "Push header wasn't provided on LLQ mode\n");
449 return ENA_COM_INVAL;
452 rc = ena_com_write_header_to_bounce(io_sq, buffer_to_push, header_len);
456 rc = ena_com_create_and_store_tx_meta_desc(io_sq, ena_tx_ctx, &have_meta);
458 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
459 "Failed to create and store tx meta desc\n");
463 /* If the caller doesn't want to send packets */
464 if (unlikely(!num_bufs && !header_len)) {
465 rc = ena_com_close_bounce_buffer(io_sq);
467 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
468 "Failed to write buffers to LLQ\n");
469 *nb_hw_desc = io_sq->tail - start_tail;
473 desc = get_sq_desc(io_sq);
475 return ENA_COM_FAULT;
476 memset(desc, 0x0, sizeof(struct ena_eth_io_tx_desc));
478 /* Set first desc when we don't have meta descriptor */
480 desc->len_ctrl |= ENA_ETH_IO_TX_DESC_FIRST_MASK;
482 desc->buff_addr_hi_hdr_sz |= ((u32)header_len <<
483 ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT) &
484 ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK;
485 desc->len_ctrl |= ((u32)io_sq->phase << ENA_ETH_IO_TX_DESC_PHASE_SHIFT) &
486 ENA_ETH_IO_TX_DESC_PHASE_MASK;
488 desc->len_ctrl |= ENA_ETH_IO_TX_DESC_COMP_REQ_MASK;
491 desc->meta_ctrl |= ((u32)ena_tx_ctx->req_id <<
492 ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT) &
493 ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK;
495 desc->meta_ctrl |= (ena_tx_ctx->df <<
496 ENA_ETH_IO_TX_DESC_DF_SHIFT) &
497 ENA_ETH_IO_TX_DESC_DF_MASK;
500 desc->len_ctrl |= ((ena_tx_ctx->req_id >> 10) <<
501 ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT) &
502 ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK;
504 if (ena_tx_ctx->meta_valid) {
505 desc->meta_ctrl |= (ena_tx_ctx->tso_enable <<
506 ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT) &
507 ENA_ETH_IO_TX_DESC_TSO_EN_MASK;
508 desc->meta_ctrl |= ena_tx_ctx->l3_proto &
509 ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK;
510 desc->meta_ctrl |= (ena_tx_ctx->l4_proto <<
511 ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT) &
512 ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK;
513 desc->meta_ctrl |= (ena_tx_ctx->l3_csum_enable <<
514 ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT) &
515 ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK;
516 desc->meta_ctrl |= (ena_tx_ctx->l4_csum_enable <<
517 ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT) &
518 ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK;
519 desc->meta_ctrl |= (ena_tx_ctx->l4_csum_partial <<
520 ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT) &
521 ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK;
524 for (i = 0; i < num_bufs; i++) {
525 /* The first desc share the same desc as the header */
526 if (likely(i != 0)) {
527 rc = ena_com_sq_update_tail(io_sq);
529 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
530 "Failed to update sq tail\n");
534 desc = get_sq_desc(io_sq);
536 return ENA_COM_FAULT;
538 memset(desc, 0x0, sizeof(struct ena_eth_io_tx_desc));
540 desc->len_ctrl |= ((u32)io_sq->phase <<
541 ENA_ETH_IO_TX_DESC_PHASE_SHIFT) &
542 ENA_ETH_IO_TX_DESC_PHASE_MASK;
545 desc->len_ctrl |= ena_bufs->len &
546 ENA_ETH_IO_TX_DESC_LENGTH_MASK;
548 addr_hi = ((ena_bufs->paddr &
549 GENMASK_ULL(io_sq->dma_addr_bits - 1, 32)) >> 32);
551 desc->buff_addr_lo = (u32)ena_bufs->paddr;
552 desc->buff_addr_hi_hdr_sz |= addr_hi &
553 ENA_ETH_IO_TX_DESC_ADDR_HI_MASK;
557 /* set the last desc indicator */
558 desc->len_ctrl |= ENA_ETH_IO_TX_DESC_LAST_MASK;
560 rc = ena_com_sq_update_tail(io_sq);
562 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
563 "Failed to update sq tail of the last descriptor\n");
567 rc = ena_com_close_bounce_buffer(io_sq);
569 ena_trc_err(ena_com_io_sq_to_ena_dev(io_sq),
570 "Failed when closing bounce buffer\n");
572 *nb_hw_desc = io_sq->tail - start_tail;
576 int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
577 struct ena_com_io_sq *io_sq,
578 struct ena_com_rx_ctx *ena_rx_ctx)
580 struct ena_com_rx_buf_info *ena_buf = &ena_rx_ctx->ena_bufs[0];
581 struct ena_eth_io_rx_cdesc_base *cdesc = NULL;
582 u16 q_depth = io_cq->q_depth;
587 ENA_WARN(io_cq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX,
588 ena_com_io_cq_to_ena_dev(io_cq), "wrong Q type");
590 nb_hw_desc = ena_com_cdesc_rx_pkt_get(io_cq, &cdesc_idx);
591 if (nb_hw_desc == 0) {
592 ena_rx_ctx->descs = nb_hw_desc;
596 ena_trc_dbg(ena_com_io_cq_to_ena_dev(io_cq),
597 "Fetch rx packet: queue %d completed desc: %d\n",
598 io_cq->qid, nb_hw_desc);
600 if (unlikely(nb_hw_desc > ena_rx_ctx->max_bufs)) {
601 ena_trc_err(ena_com_io_cq_to_ena_dev(io_cq),
602 "Too many RX cdescs (%d) > MAX(%d)\n",
603 nb_hw_desc, ena_rx_ctx->max_bufs);
604 return ENA_COM_NO_SPACE;
607 cdesc = ena_com_rx_cdesc_idx_to_ptr(io_cq, cdesc_idx);
608 ena_rx_ctx->pkt_offset = cdesc->offset;
611 ena_buf[i].len = cdesc->length;
612 ena_buf[i].req_id = cdesc->req_id;
613 if (unlikely(ena_buf[i].req_id >= q_depth))
616 if (++i >= nb_hw_desc)
619 cdesc = ena_com_rx_cdesc_idx_to_ptr(io_cq, cdesc_idx + i);
623 /* Update SQ head ptr */
624 io_sq->next_to_comp += nb_hw_desc;
626 ena_trc_dbg(ena_com_io_cq_to_ena_dev(io_cq),
627 "[%s][QID#%d] Updating SQ head to: %d\n", __func__,
628 io_sq->qid, io_sq->next_to_comp);
630 /* Get rx flags from the last pkt */
631 ena_com_rx_set_flags(io_cq, ena_rx_ctx, cdesc);
633 ena_rx_ctx->descs = nb_hw_desc;
638 int ena_com_add_single_rx_desc(struct ena_com_io_sq *io_sq,
639 struct ena_com_buf *ena_buf,
642 struct ena_eth_io_rx_desc *desc;
644 ENA_WARN(io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX,
645 ena_com_io_sq_to_ena_dev(io_sq), "wrong Q type");
647 if (unlikely(!ena_com_sq_have_enough_space(io_sq, 1)))
648 return ENA_COM_NO_SPACE;
650 desc = get_sq_desc(io_sq);
652 return ENA_COM_FAULT;
654 memset(desc, 0x0, sizeof(struct ena_eth_io_rx_desc));
656 desc->length = ena_buf->len;
658 desc->ctrl = ENA_ETH_IO_RX_DESC_FIRST_MASK |
659 ENA_ETH_IO_RX_DESC_LAST_MASK |
660 ENA_ETH_IO_RX_DESC_COMP_REQ_MASK |
661 (io_sq->phase & ENA_ETH_IO_RX_DESC_PHASE_MASK);
663 desc->req_id = req_id;
665 ena_trc_dbg(ena_com_io_sq_to_ena_dev(io_sq),
666 "[%s] Adding single RX desc, Queue: %u, req_id: %u\n",
667 __func__, io_sq->qid, req_id);
669 desc->buff_addr_lo = (u32)ena_buf->paddr;
671 ((ena_buf->paddr & GENMASK_ULL(io_sq->dma_addr_bits - 1, 32)) >> 32);
673 return ena_com_sq_update_tail(io_sq);
676 bool ena_com_cq_empty(struct ena_com_io_cq *io_cq)
678 struct ena_eth_io_rx_cdesc_base *cdesc;
680 cdesc = ena_com_get_next_rx_cdesc(io_cq);