4 * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
5 * Copyright 2014 6WIND S.A.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * * Neither the name of Intel Corporation nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/queue.h>
46 #include <rte_byteorder.h>
47 #include <rte_common.h>
48 #include <rte_cycles.h>
50 #include <rte_debug.h>
51 #include <rte_interrupts.h>
53 #include <rte_memory.h>
54 #include <rte_memzone.h>
55 #include <rte_launch.h>
57 #include <rte_per_lcore.h>
58 #include <rte_lcore.h>
59 #include <rte_atomic.h>
60 #include <rte_branch_prediction.h>
62 #include <rte_mempool.h>
63 #include <rte_malloc.h>
65 #include <rte_ether.h>
66 #include <rte_ethdev.h>
67 #include <rte_prefetch.h>
71 #include <rte_string_fns.h>
72 #include <rte_errno.h>
75 #include "ixgbe_logs.h"
76 #include "base/ixgbe_api.h"
77 #include "base/ixgbe_vf.h"
78 #include "ixgbe_ethdev.h"
79 #include "base/ixgbe_dcb.h"
80 #include "base/ixgbe_common.h"
81 #include "ixgbe_rxtx.h"
83 /* Bit Mask to indicate what bits required for building TX context */
84 #define IXGBE_TX_OFFLOAD_MASK ( \
90 static inline struct rte_mbuf *
91 rte_rxmbuf_alloc(struct rte_mempool *mp)
95 m = __rte_mbuf_raw_alloc(mp);
96 __rte_mbuf_sanity_check_raw(m, 0);
102 #define RTE_PMD_USE_PREFETCH
105 #ifdef RTE_PMD_USE_PREFETCH
107 * Prefetch a cache line into all cache levels.
109 #define rte_ixgbe_prefetch(p) rte_prefetch0(p)
111 #define rte_ixgbe_prefetch(p) do {} while(0)
114 /*********************************************************************
118 **********************************************************************/
121 * Check for descriptors with their DD bit set and free mbufs.
122 * Return the total number of buffers freed.
124 static inline int __attribute__((always_inline))
125 ixgbe_tx_free_bufs(struct ixgbe_tx_queue *txq)
127 struct ixgbe_tx_entry *txep;
131 /* check DD bit on threshold descriptor */
132 status = txq->tx_ring[txq->tx_next_dd].wb.status;
133 if (!(status & rte_cpu_to_le_32(IXGBE_ADVTXD_STAT_DD)))
137 * first buffer to free from S/W ring is at index
138 * tx_next_dd - (tx_rs_thresh-1)
140 txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
142 /* free buffers one at a time */
143 if ((txq->txq_flags & (uint32_t)ETH_TXQ_FLAGS_NOREFCOUNT) != 0) {
144 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
145 txep->mbuf->next = NULL;
146 rte_mempool_put(txep->mbuf->pool, txep->mbuf);
150 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
151 rte_pktmbuf_free_seg(txep->mbuf);
156 /* buffers were freed, update counters */
157 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
158 txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
159 if (txq->tx_next_dd >= txq->nb_tx_desc)
160 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
162 return txq->tx_rs_thresh;
165 /* Populate 4 descriptors with data from 4 mbufs */
167 tx4(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
169 uint64_t buf_dma_addr;
173 for (i = 0; i < 4; ++i, ++txdp, ++pkts) {
174 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
175 pkt_len = (*pkts)->data_len;
177 /* write data to descriptor */
178 txdp->read.buffer_addr = rte_cpu_to_le_64(buf_dma_addr);
180 txdp->read.cmd_type_len =
181 rte_cpu_to_le_32((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
183 txdp->read.olinfo_status =
184 rte_cpu_to_le_32(pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
186 rte_prefetch0(&(*pkts)->pool);
190 /* Populate 1 descriptor with data from 1 mbuf */
192 tx1(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
194 uint64_t buf_dma_addr;
197 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
198 pkt_len = (*pkts)->data_len;
200 /* write data to descriptor */
201 txdp->read.buffer_addr = rte_cpu_to_le_64(buf_dma_addr);
202 txdp->read.cmd_type_len =
203 rte_cpu_to_le_32((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
204 txdp->read.olinfo_status =
205 rte_cpu_to_le_32(pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
206 rte_prefetch0(&(*pkts)->pool);
210 * Fill H/W descriptor ring with mbuf data.
211 * Copy mbuf pointers to the S/W ring.
214 ixgbe_tx_fill_hw_ring(struct ixgbe_tx_queue *txq, struct rte_mbuf **pkts,
217 volatile union ixgbe_adv_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]);
218 struct ixgbe_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]);
219 const int N_PER_LOOP = 4;
220 const int N_PER_LOOP_MASK = N_PER_LOOP-1;
221 int mainpart, leftover;
225 * Process most of the packets in chunks of N pkts. Any
226 * leftover packets will get processed one at a time.
228 mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK));
229 leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK));
230 for (i = 0; i < mainpart; i += N_PER_LOOP) {
231 /* Copy N mbuf pointers to the S/W ring */
232 for (j = 0; j < N_PER_LOOP; ++j) {
233 (txep + i + j)->mbuf = *(pkts + i + j);
235 tx4(txdp + i, pkts + i);
238 if (unlikely(leftover > 0)) {
239 for (i = 0; i < leftover; ++i) {
240 (txep + mainpart + i)->mbuf = *(pkts + mainpart + i);
241 tx1(txdp + mainpart + i, pkts + mainpart + i);
246 static inline uint16_t
247 tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
250 struct ixgbe_tx_queue *txq = (struct ixgbe_tx_queue *)tx_queue;
251 volatile union ixgbe_adv_tx_desc *tx_r = txq->tx_ring;
255 * Begin scanning the H/W ring for done descriptors when the
256 * number of available descriptors drops below tx_free_thresh. For
257 * each done descriptor, free the associated buffer.
259 if (txq->nb_tx_free < txq->tx_free_thresh)
260 ixgbe_tx_free_bufs(txq);
262 /* Only use descriptors that are available */
263 nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
264 if (unlikely(nb_pkts == 0))
267 /* Use exactly nb_pkts descriptors */
268 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
271 * At this point, we know there are enough descriptors in the
272 * ring to transmit all the packets. This assumes that each
273 * mbuf contains a single segment, and that no new offloads
274 * are expected, which would require a new context descriptor.
278 * See if we're going to wrap-around. If so, handle the top
279 * of the descriptor ring first, then do the bottom. If not,
280 * the processing looks just like the "bottom" part anyway...
282 if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) {
283 n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail);
284 ixgbe_tx_fill_hw_ring(txq, tx_pkts, n);
287 * We know that the last descriptor in the ring will need to
288 * have its RS bit set because tx_rs_thresh has to be
289 * a divisor of the ring size
291 tx_r[txq->tx_next_rs].read.cmd_type_len |=
292 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
293 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
298 /* Fill H/W descriptor ring with mbuf data */
299 ixgbe_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n));
300 txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n));
303 * Determine if RS bit should be set
304 * This is what we actually want:
305 * if ((txq->tx_tail - 1) >= txq->tx_next_rs)
306 * but instead of subtracting 1 and doing >=, we can just do
307 * greater than without subtracting.
309 if (txq->tx_tail > txq->tx_next_rs) {
310 tx_r[txq->tx_next_rs].read.cmd_type_len |=
311 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
312 txq->tx_next_rs = (uint16_t)(txq->tx_next_rs +
314 if (txq->tx_next_rs >= txq->nb_tx_desc)
315 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
319 * Check for wrap-around. This would only happen if we used
320 * up to the last descriptor in the ring, no more, no less.
322 if (txq->tx_tail >= txq->nb_tx_desc)
325 /* update tail pointer */
327 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
333 ixgbe_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts,
338 /* Try to transmit at least chunks of TX_MAX_BURST pkts */
339 if (likely(nb_pkts <= RTE_PMD_IXGBE_TX_MAX_BURST))
340 return tx_xmit_pkts(tx_queue, tx_pkts, nb_pkts);
342 /* transmit more than the max burst, in chunks of TX_MAX_BURST */
346 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_TX_MAX_BURST);
347 ret = tx_xmit_pkts(tx_queue, &(tx_pkts[nb_tx]), n);
348 nb_tx = (uint16_t)(nb_tx + ret);
349 nb_pkts = (uint16_t)(nb_pkts - ret);
358 ixgbe_set_xmit_ctx(struct ixgbe_tx_queue *txq,
359 volatile struct ixgbe_adv_tx_context_desc *ctx_txd,
360 uint64_t ol_flags, union ixgbe_tx_offload tx_offload)
362 uint32_t type_tucmd_mlhl;
363 uint32_t mss_l4len_idx = 0;
365 uint32_t vlan_macip_lens;
366 union ixgbe_tx_offload tx_offload_mask;
368 ctx_idx = txq->ctx_curr;
369 tx_offload_mask.data = 0;
372 /* Specify which HW CTX to upload. */
373 mss_l4len_idx |= (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT);
375 if (ol_flags & PKT_TX_VLAN_PKT) {
376 tx_offload_mask.vlan_tci |= ~0;
379 /* check if TCP segmentation required for this packet */
380 if (ol_flags & PKT_TX_TCP_SEG) {
381 /* implies IP cksum in IPv4 */
382 if (ol_flags & PKT_TX_IP_CKSUM)
383 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4 |
384 IXGBE_ADVTXD_TUCMD_L4T_TCP |
385 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
387 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV6 |
388 IXGBE_ADVTXD_TUCMD_L4T_TCP |
389 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
391 tx_offload_mask.l2_len |= ~0;
392 tx_offload_mask.l3_len |= ~0;
393 tx_offload_mask.l4_len |= ~0;
394 tx_offload_mask.tso_segsz |= ~0;
395 mss_l4len_idx |= tx_offload.tso_segsz << IXGBE_ADVTXD_MSS_SHIFT;
396 mss_l4len_idx |= tx_offload.l4_len << IXGBE_ADVTXD_L4LEN_SHIFT;
397 } else { /* no TSO, check if hardware checksum is needed */
398 if (ol_flags & PKT_TX_IP_CKSUM) {
399 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4;
400 tx_offload_mask.l2_len |= ~0;
401 tx_offload_mask.l3_len |= ~0;
404 switch (ol_flags & PKT_TX_L4_MASK) {
405 case PKT_TX_UDP_CKSUM:
406 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP |
407 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
408 mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
409 tx_offload_mask.l2_len |= ~0;
410 tx_offload_mask.l3_len |= ~0;
412 case PKT_TX_TCP_CKSUM:
413 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP |
414 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
415 mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
416 tx_offload_mask.l2_len |= ~0;
417 tx_offload_mask.l3_len |= ~0;
418 tx_offload_mask.l4_len |= ~0;
420 case PKT_TX_SCTP_CKSUM:
421 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP |
422 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
423 mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
424 tx_offload_mask.l2_len |= ~0;
425 tx_offload_mask.l3_len |= ~0;
428 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV |
429 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
434 txq->ctx_cache[ctx_idx].flags = ol_flags;
435 txq->ctx_cache[ctx_idx].tx_offload.data =
436 tx_offload_mask.data & tx_offload.data;
437 txq->ctx_cache[ctx_idx].tx_offload_mask = tx_offload_mask;
439 ctx_txd->type_tucmd_mlhl = rte_cpu_to_le_32(type_tucmd_mlhl);
440 vlan_macip_lens = tx_offload.l3_len;
441 vlan_macip_lens |= (tx_offload.l2_len << IXGBE_ADVTXD_MACLEN_SHIFT);
442 vlan_macip_lens |= ((uint32_t)tx_offload.vlan_tci << IXGBE_ADVTXD_VLAN_SHIFT);
443 ctx_txd->vlan_macip_lens = rte_cpu_to_le_32(vlan_macip_lens);
444 ctx_txd->mss_l4len_idx = rte_cpu_to_le_32(mss_l4len_idx);
445 ctx_txd->seqnum_seed = 0;
449 * Check which hardware context can be used. Use the existing match
450 * or create a new context descriptor.
452 static inline uint32_t
453 what_advctx_update(struct ixgbe_tx_queue *txq, uint64_t flags,
454 union ixgbe_tx_offload tx_offload)
456 /* If match with the current used context */
457 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
458 (txq->ctx_cache[txq->ctx_curr].tx_offload.data ==
459 (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data & tx_offload.data)))) {
460 return txq->ctx_curr;
463 /* What if match with the next context */
465 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
466 (txq->ctx_cache[txq->ctx_curr].tx_offload.data ==
467 (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data & tx_offload.data)))) {
468 return txq->ctx_curr;
471 /* Mismatch, use the previous context */
472 return (IXGBE_CTX_NUM);
475 static inline uint32_t
476 tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags)
479 if ((ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM)
480 tmp |= IXGBE_ADVTXD_POPTS_TXSM;
481 if (ol_flags & PKT_TX_IP_CKSUM)
482 tmp |= IXGBE_ADVTXD_POPTS_IXSM;
483 if (ol_flags & PKT_TX_TCP_SEG)
484 tmp |= IXGBE_ADVTXD_POPTS_TXSM;
488 static inline uint32_t
489 tx_desc_ol_flags_to_cmdtype(uint64_t ol_flags)
491 uint32_t cmdtype = 0;
492 if (ol_flags & PKT_TX_VLAN_PKT)
493 cmdtype |= IXGBE_ADVTXD_DCMD_VLE;
494 if (ol_flags & PKT_TX_TCP_SEG)
495 cmdtype |= IXGBE_ADVTXD_DCMD_TSE;
499 /* Default RS bit threshold values */
500 #ifndef DEFAULT_TX_RS_THRESH
501 #define DEFAULT_TX_RS_THRESH 32
503 #ifndef DEFAULT_TX_FREE_THRESH
504 #define DEFAULT_TX_FREE_THRESH 32
507 /* Reset transmit descriptors after they have been used */
509 ixgbe_xmit_cleanup(struct ixgbe_tx_queue *txq)
511 struct ixgbe_tx_entry *sw_ring = txq->sw_ring;
512 volatile union ixgbe_adv_tx_desc *txr = txq->tx_ring;
513 uint16_t last_desc_cleaned = txq->last_desc_cleaned;
514 uint16_t nb_tx_desc = txq->nb_tx_desc;
515 uint16_t desc_to_clean_to;
516 uint16_t nb_tx_to_clean;
519 /* Determine the last descriptor needing to be cleaned */
520 desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
521 if (desc_to_clean_to >= nb_tx_desc)
522 desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
524 /* Check to make sure the last descriptor to clean is done */
525 desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
526 status = txr[desc_to_clean_to].wb.status;
527 if (!(status & rte_cpu_to_le_32(IXGBE_TXD_STAT_DD)))
529 PMD_TX_FREE_LOG(DEBUG,
530 "TX descriptor %4u is not done"
531 "(port=%d queue=%d)",
533 txq->port_id, txq->queue_id);
534 /* Failed to clean any descriptors, better luck next time */
538 /* Figure out how many descriptors will be cleaned */
539 if (last_desc_cleaned > desc_to_clean_to)
540 nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
543 nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
546 PMD_TX_FREE_LOG(DEBUG,
547 "Cleaning %4u TX descriptors: %4u to %4u "
548 "(port=%d queue=%d)",
549 nb_tx_to_clean, last_desc_cleaned, desc_to_clean_to,
550 txq->port_id, txq->queue_id);
553 * The last descriptor to clean is done, so that means all the
554 * descriptors from the last descriptor that was cleaned
555 * up to the last descriptor with the RS bit set
556 * are done. Only reset the threshold descriptor.
558 txr[desc_to_clean_to].wb.status = 0;
560 /* Update the txq to reflect the last descriptor that was cleaned */
561 txq->last_desc_cleaned = desc_to_clean_to;
562 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
569 ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
572 struct ixgbe_tx_queue *txq;
573 struct ixgbe_tx_entry *sw_ring;
574 struct ixgbe_tx_entry *txe, *txn;
575 volatile union ixgbe_adv_tx_desc *txr;
576 volatile union ixgbe_adv_tx_desc *txd;
577 struct rte_mbuf *tx_pkt;
578 struct rte_mbuf *m_seg;
579 uint64_t buf_dma_addr;
580 uint32_t olinfo_status;
581 uint32_t cmd_type_len;
592 union ixgbe_tx_offload tx_offload = {0};
595 sw_ring = txq->sw_ring;
597 tx_id = txq->tx_tail;
598 txe = &sw_ring[tx_id];
600 /* Determine if the descriptor ring needs to be cleaned. */
601 if (txq->nb_tx_free < txq->tx_free_thresh)
602 ixgbe_xmit_cleanup(txq);
604 rte_prefetch0(&txe->mbuf->pool);
607 for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
610 pkt_len = tx_pkt->pkt_len;
613 * Determine how many (if any) context descriptors
614 * are needed for offload functionality.
616 ol_flags = tx_pkt->ol_flags;
618 /* If hardware offload required */
619 tx_ol_req = ol_flags & IXGBE_TX_OFFLOAD_MASK;
621 tx_offload.l2_len = tx_pkt->l2_len;
622 tx_offload.l3_len = tx_pkt->l3_len;
623 tx_offload.l4_len = tx_pkt->l4_len;
624 tx_offload.vlan_tci = tx_pkt->vlan_tci;
625 tx_offload.tso_segsz = tx_pkt->tso_segsz;
627 /* If new context need be built or reuse the exist ctx. */
628 ctx = what_advctx_update(txq, tx_ol_req,
630 /* Only allocate context descriptor if required*/
631 new_ctx = (ctx == IXGBE_CTX_NUM);
636 * Keep track of how many descriptors are used this loop
637 * This will always be the number of segments + the number of
638 * Context descriptors required to transmit the packet
640 nb_used = (uint16_t)(tx_pkt->nb_segs + new_ctx);
643 * The number of descriptors that must be allocated for a
644 * packet is the number of segments of that packet, plus 1
645 * Context Descriptor for the hardware offload, if any.
646 * Determine the last TX descriptor to allocate in the TX ring
647 * for the packet, starting from the current position (tx_id)
650 tx_last = (uint16_t) (tx_id + nb_used - 1);
653 if (tx_last >= txq->nb_tx_desc)
654 tx_last = (uint16_t) (tx_last - txq->nb_tx_desc);
656 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u pktlen=%u"
657 " tx_first=%u tx_last=%u",
658 (unsigned) txq->port_id,
659 (unsigned) txq->queue_id,
665 * Make sure there are enough TX descriptors available to
666 * transmit the entire packet.
667 * nb_used better be less than or equal to txq->tx_rs_thresh
669 if (nb_used > txq->nb_tx_free) {
670 PMD_TX_FREE_LOG(DEBUG,
671 "Not enough free TX descriptors "
672 "nb_used=%4u nb_free=%4u "
673 "(port=%d queue=%d)",
674 nb_used, txq->nb_tx_free,
675 txq->port_id, txq->queue_id);
677 if (ixgbe_xmit_cleanup(txq) != 0) {
678 /* Could not clean any descriptors */
684 /* nb_used better be <= txq->tx_rs_thresh */
685 if (unlikely(nb_used > txq->tx_rs_thresh)) {
686 PMD_TX_FREE_LOG(DEBUG,
687 "The number of descriptors needed to "
688 "transmit the packet exceeds the "
689 "RS bit threshold. This will impact "
691 "nb_used=%4u nb_free=%4u "
693 "(port=%d queue=%d)",
694 nb_used, txq->nb_tx_free,
696 txq->port_id, txq->queue_id);
698 * Loop here until there are enough TX
699 * descriptors or until the ring cannot be
702 while (nb_used > txq->nb_tx_free) {
703 if (ixgbe_xmit_cleanup(txq) != 0) {
705 * Could not clean any
717 * By now there are enough free TX descriptors to transmit
722 * Set common flags of all TX Data Descriptors.
724 * The following bits must be set in all Data Descriptors:
725 * - IXGBE_ADVTXD_DTYP_DATA
726 * - IXGBE_ADVTXD_DCMD_DEXT
728 * The following bits must be set in the first Data Descriptor
729 * and are ignored in the other ones:
730 * - IXGBE_ADVTXD_DCMD_IFCS
731 * - IXGBE_ADVTXD_MAC_1588
732 * - IXGBE_ADVTXD_DCMD_VLE
734 * The following bits must only be set in the last Data
736 * - IXGBE_TXD_CMD_EOP
738 * The following bits can be set in any Data Descriptor, but
739 * are only set in the last Data Descriptor:
742 cmd_type_len = IXGBE_ADVTXD_DTYP_DATA |
743 IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
745 #ifdef RTE_LIBRTE_IEEE1588
746 if (ol_flags & PKT_TX_IEEE1588_TMST)
747 cmd_type_len |= IXGBE_ADVTXD_MAC_1588;
753 if (ol_flags & PKT_TX_TCP_SEG) {
754 /* when TSO is on, paylen in descriptor is the
755 * not the packet len but the tcp payload len */
756 pkt_len -= (tx_offload.l2_len +
757 tx_offload.l3_len + tx_offload.l4_len);
761 * Setup the TX Advanced Context Descriptor if required
764 volatile struct ixgbe_adv_tx_context_desc *
767 ctx_txd = (volatile struct
768 ixgbe_adv_tx_context_desc *)
771 txn = &sw_ring[txe->next_id];
772 rte_prefetch0(&txn->mbuf->pool);
774 if (txe->mbuf != NULL) {
775 rte_pktmbuf_free_seg(txe->mbuf);
779 ixgbe_set_xmit_ctx(txq, ctx_txd, tx_ol_req,
782 txe->last_id = tx_last;
783 tx_id = txe->next_id;
788 * Setup the TX Advanced Data Descriptor,
789 * This path will go through
790 * whatever new/reuse the context descriptor
792 cmd_type_len |= tx_desc_ol_flags_to_cmdtype(ol_flags);
793 olinfo_status |= tx_desc_cksum_flags_to_olinfo(ol_flags);
794 olinfo_status |= ctx << IXGBE_ADVTXD_IDX_SHIFT;
797 olinfo_status |= (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
802 txn = &sw_ring[txe->next_id];
803 rte_prefetch0(&txn->mbuf->pool);
805 if (txe->mbuf != NULL)
806 rte_pktmbuf_free_seg(txe->mbuf);
810 * Set up Transmit Data Descriptor.
812 slen = m_seg->data_len;
813 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(m_seg);
814 txd->read.buffer_addr =
815 rte_cpu_to_le_64(buf_dma_addr);
816 txd->read.cmd_type_len =
817 rte_cpu_to_le_32(cmd_type_len | slen);
818 txd->read.olinfo_status =
819 rte_cpu_to_le_32(olinfo_status);
820 txe->last_id = tx_last;
821 tx_id = txe->next_id;
824 } while (m_seg != NULL);
827 * The last packet data descriptor needs End Of Packet (EOP)
829 cmd_type_len |= IXGBE_TXD_CMD_EOP;
830 txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
831 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
833 /* Set RS bit only on threshold packets' last descriptor */
834 if (txq->nb_tx_used >= txq->tx_rs_thresh) {
835 PMD_TX_FREE_LOG(DEBUG,
836 "Setting RS bit on TXD id="
837 "%4u (port=%d queue=%d)",
838 tx_last, txq->port_id, txq->queue_id);
840 cmd_type_len |= IXGBE_TXD_CMD_RS;
842 /* Update txq RS bit counters */
845 txd->read.cmd_type_len |= rte_cpu_to_le_32(cmd_type_len);
851 * Set the Transmit Descriptor Tail (TDT)
853 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
854 (unsigned) txq->port_id, (unsigned) txq->queue_id,
855 (unsigned) tx_id, (unsigned) nb_tx);
856 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
857 txq->tx_tail = tx_id;
862 /*********************************************************************
866 **********************************************************************/
867 #define IXGBE_PACKET_TYPE_IPV4 0X01
868 #define IXGBE_PACKET_TYPE_IPV4_TCP 0X11
869 #define IXGBE_PACKET_TYPE_IPV4_UDP 0X21
870 #define IXGBE_PACKET_TYPE_IPV4_SCTP 0X41
871 #define IXGBE_PACKET_TYPE_IPV4_EXT 0X03
872 #define IXGBE_PACKET_TYPE_IPV4_EXT_SCTP 0X43
873 #define IXGBE_PACKET_TYPE_IPV6 0X04
874 #define IXGBE_PACKET_TYPE_IPV6_TCP 0X14
875 #define IXGBE_PACKET_TYPE_IPV6_UDP 0X24
876 #define IXGBE_PACKET_TYPE_IPV6_EXT 0X0C
877 #define IXGBE_PACKET_TYPE_IPV6_EXT_TCP 0X1C
878 #define IXGBE_PACKET_TYPE_IPV6_EXT_UDP 0X2C
879 #define IXGBE_PACKET_TYPE_IPV4_IPV6 0X05
880 #define IXGBE_PACKET_TYPE_IPV4_IPV6_TCP 0X15
881 #define IXGBE_PACKET_TYPE_IPV4_IPV6_UDP 0X25
882 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT 0X0D
883 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP 0X1D
884 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP 0X2D
885 #define IXGBE_PACKET_TYPE_MAX 0X80
886 #define IXGBE_PACKET_TYPE_MASK 0X7F
887 #define IXGBE_PACKET_TYPE_SHIFT 0X04
888 static inline uint32_t
889 ixgbe_rxd_pkt_info_to_pkt_type(uint16_t pkt_info)
891 static const uint32_t
892 ptype_table[IXGBE_PACKET_TYPE_MAX] __rte_cache_aligned = {
893 [IXGBE_PACKET_TYPE_IPV4] = RTE_PTYPE_L2_ETHER |
895 [IXGBE_PACKET_TYPE_IPV4_EXT] = RTE_PTYPE_L2_ETHER |
896 RTE_PTYPE_L3_IPV4_EXT,
897 [IXGBE_PACKET_TYPE_IPV6] = RTE_PTYPE_L2_ETHER |
899 [IXGBE_PACKET_TYPE_IPV4_IPV6] = RTE_PTYPE_L2_ETHER |
900 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
901 RTE_PTYPE_INNER_L3_IPV6,
902 [IXGBE_PACKET_TYPE_IPV6_EXT] = RTE_PTYPE_L2_ETHER |
903 RTE_PTYPE_L3_IPV6_EXT,
904 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT] = RTE_PTYPE_L2_ETHER |
905 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
906 RTE_PTYPE_INNER_L3_IPV6_EXT,
907 [IXGBE_PACKET_TYPE_IPV4_TCP] = RTE_PTYPE_L2_ETHER |
908 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP,
909 [IXGBE_PACKET_TYPE_IPV6_TCP] = RTE_PTYPE_L2_ETHER |
910 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP,
911 [IXGBE_PACKET_TYPE_IPV4_IPV6_TCP] = RTE_PTYPE_L2_ETHER |
912 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
913 RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_TCP,
914 [IXGBE_PACKET_TYPE_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER |
915 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP,
916 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER |
917 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
918 RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_TCP,
919 [IXGBE_PACKET_TYPE_IPV4_UDP] = RTE_PTYPE_L2_ETHER |
920 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP,
921 [IXGBE_PACKET_TYPE_IPV6_UDP] = RTE_PTYPE_L2_ETHER |
922 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP,
923 [IXGBE_PACKET_TYPE_IPV4_IPV6_UDP] = RTE_PTYPE_L2_ETHER |
924 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
925 RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_UDP,
926 [IXGBE_PACKET_TYPE_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER |
927 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP,
928 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER |
929 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
930 RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_UDP,
931 [IXGBE_PACKET_TYPE_IPV4_SCTP] = RTE_PTYPE_L2_ETHER |
932 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP,
933 [IXGBE_PACKET_TYPE_IPV4_EXT_SCTP] = RTE_PTYPE_L2_ETHER |
934 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_SCTP,
936 if (unlikely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF))
937 return RTE_PTYPE_UNKNOWN;
939 pkt_info = (pkt_info >> IXGBE_PACKET_TYPE_SHIFT) &
940 IXGBE_PACKET_TYPE_MASK;
942 return ptype_table[pkt_info];
945 static inline uint64_t
946 ixgbe_rxd_pkt_info_to_pkt_flags(uint16_t pkt_info)
948 static uint64_t ip_rss_types_map[16] __rte_cache_aligned = {
949 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH,
950 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH,
951 PKT_RX_RSS_HASH, 0, 0, 0,
952 0, 0, 0, PKT_RX_FDIR,
954 #ifdef RTE_LIBRTE_IEEE1588
955 static uint64_t ip_pkt_etqf_map[8] = {
956 0, 0, 0, PKT_RX_IEEE1588_PTP,
960 if (likely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF))
961 return ip_pkt_etqf_map[(pkt_info >> 4) & 0X07] |
962 ip_rss_types_map[pkt_info & 0XF];
964 return ip_rss_types_map[pkt_info & 0XF];
966 return ip_rss_types_map[pkt_info & 0XF];
970 static inline uint64_t
971 rx_desc_status_to_pkt_flags(uint32_t rx_status)
976 * Check if VLAN present only.
977 * Do not check whether L3/L4 rx checksum done by NIC or not,
978 * That can be found from rte_eth_rxmode.hw_ip_checksum flag
980 pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0;
982 #ifdef RTE_LIBRTE_IEEE1588
983 if (rx_status & IXGBE_RXD_STAT_TMST)
984 pkt_flags = pkt_flags | PKT_RX_IEEE1588_TMST;
989 static inline uint64_t
990 rx_desc_error_to_pkt_flags(uint32_t rx_status)
993 * Bit 31: IPE, IPv4 checksum error
994 * Bit 30: L4I, L4I integrity error
996 static uint64_t error_to_pkt_flags_map[4] = {
997 0, PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD,
998 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
1000 return error_to_pkt_flags_map[(rx_status >>
1001 IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
1005 * LOOK_AHEAD defines how many desc statuses to check beyond the
1006 * current descriptor.
1007 * It must be a pound define for optimal performance.
1008 * Do not change the value of LOOK_AHEAD, as the ixgbe_rx_scan_hw_ring
1009 * function only works with LOOK_AHEAD=8.
1011 #define LOOK_AHEAD 8
1012 #if (LOOK_AHEAD != 8)
1013 #error "PMD IXGBE: LOOK_AHEAD must be 8\n"
1016 ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq)
1018 volatile union ixgbe_adv_rx_desc *rxdp;
1019 struct ixgbe_rx_entry *rxep;
1020 struct rte_mbuf *mb;
1024 uint32_t s[LOOK_AHEAD];
1025 uint16_t pkt_info[LOOK_AHEAD];
1026 int i, j, nb_rx = 0;
1029 /* get references to current descriptor and S/W ring entry */
1030 rxdp = &rxq->rx_ring[rxq->rx_tail];
1031 rxep = &rxq->sw_ring[rxq->rx_tail];
1033 status = rxdp->wb.upper.status_error;
1034 /* check to make sure there is at least 1 packet to receive */
1035 if (!(status & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1039 * Scan LOOK_AHEAD descriptors at a time to determine which descriptors
1040 * reference packets that are ready to be received.
1042 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST;
1043 i += LOOK_AHEAD, rxdp += LOOK_AHEAD, rxep += LOOK_AHEAD)
1045 /* Read desc statuses backwards to avoid race condition */
1046 for (j = LOOK_AHEAD-1; j >= 0; --j)
1047 s[j] = rte_le_to_cpu_32(rxdp[j].wb.upper.status_error);
1049 for (j = LOOK_AHEAD - 1; j >= 0; --j)
1050 pkt_info[j] = rxdp[j].wb.lower.lo_dword.
1053 /* Compute how many status bits were set */
1055 for (j = 0; j < LOOK_AHEAD; ++j)
1056 nb_dd += s[j] & IXGBE_RXDADV_STAT_DD;
1060 /* Translate descriptor info to mbuf format */
1061 for (j = 0; j < nb_dd; ++j) {
1063 pkt_len = rte_le_to_cpu_16(rxdp[j].wb.upper.length) -
1065 mb->data_len = pkt_len;
1066 mb->pkt_len = pkt_len;
1067 mb->vlan_tci = rte_le_to_cpu_16(rxdp[j].wb.upper.vlan);
1069 /* convert descriptor fields to rte mbuf flags */
1070 pkt_flags = rx_desc_status_to_pkt_flags(s[j]);
1071 pkt_flags |= rx_desc_error_to_pkt_flags(s[j]);
1073 ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info[j]);
1074 mb->ol_flags = pkt_flags;
1076 ixgbe_rxd_pkt_info_to_pkt_type(pkt_info[j]);
1078 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1079 mb->hash.rss = rte_le_to_cpu_32(
1080 rxdp[j].wb.lower.hi_dword.rss);
1081 else if (pkt_flags & PKT_RX_FDIR) {
1082 mb->hash.fdir.hash = rte_le_to_cpu_16(
1083 rxdp[j].wb.lower.hi_dword.csum_ip.csum) &
1084 IXGBE_ATR_HASH_MASK;
1085 mb->hash.fdir.id = rte_le_to_cpu_16(
1086 rxdp[j].wb.lower.hi_dword.csum_ip.ip_id);
1090 /* Move mbuf pointers from the S/W ring to the stage */
1091 for (j = 0; j < LOOK_AHEAD; ++j) {
1092 rxq->rx_stage[i + j] = rxep[j].mbuf;
1095 /* stop if all requested packets could not be received */
1096 if (nb_dd != LOOK_AHEAD)
1100 /* clear software ring entries so we can cleanup correctly */
1101 for (i = 0; i < nb_rx; ++i) {
1102 rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL;
1110 ixgbe_rx_alloc_bufs(struct ixgbe_rx_queue *rxq, bool reset_mbuf)
1112 volatile union ixgbe_adv_rx_desc *rxdp;
1113 struct ixgbe_rx_entry *rxep;
1114 struct rte_mbuf *mb;
1119 /* allocate buffers in bulk directly into the S/W ring */
1120 alloc_idx = rxq->rx_free_trigger - (rxq->rx_free_thresh - 1);
1121 rxep = &rxq->sw_ring[alloc_idx];
1122 diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep,
1123 rxq->rx_free_thresh);
1124 if (unlikely(diag != 0))
1127 rxdp = &rxq->rx_ring[alloc_idx];
1128 for (i = 0; i < rxq->rx_free_thresh; ++i) {
1129 /* populate the static rte mbuf fields */
1134 mb->port = rxq->port_id;
1137 rte_mbuf_refcnt_set(mb, 1);
1138 mb->data_off = RTE_PKTMBUF_HEADROOM;
1140 /* populate the descriptors */
1141 dma_addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mb));
1142 rxdp[i].read.hdr_addr = 0;
1143 rxdp[i].read.pkt_addr = dma_addr;
1146 /* update state of internal queue structure */
1147 rxq->rx_free_trigger = rxq->rx_free_trigger + rxq->rx_free_thresh;
1148 if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
1149 rxq->rx_free_trigger = rxq->rx_free_thresh - 1;
1155 static inline uint16_t
1156 ixgbe_rx_fill_from_stage(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
1159 struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
1162 /* how many packets are ready to return? */
1163 nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
1165 /* copy mbuf pointers to the application's packet list */
1166 for (i = 0; i < nb_pkts; ++i)
1167 rx_pkts[i] = stage[i];
1169 /* update internal queue state */
1170 rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
1171 rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
1176 static inline uint16_t
1177 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1180 struct ixgbe_rx_queue *rxq = (struct ixgbe_rx_queue *)rx_queue;
1183 /* Any previously recv'd pkts will be returned from the Rx stage */
1184 if (rxq->rx_nb_avail)
1185 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1187 /* Scan the H/W ring for packets to receive */
1188 nb_rx = (uint16_t)ixgbe_rx_scan_hw_ring(rxq);
1190 /* update internal queue state */
1191 rxq->rx_next_avail = 0;
1192 rxq->rx_nb_avail = nb_rx;
1193 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
1195 /* if required, allocate new buffers to replenish descriptors */
1196 if (rxq->rx_tail > rxq->rx_free_trigger) {
1197 uint16_t cur_free_trigger = rxq->rx_free_trigger;
1199 if (ixgbe_rx_alloc_bufs(rxq, true) != 0) {
1201 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1202 "queue_id=%u", (unsigned) rxq->port_id,
1203 (unsigned) rxq->queue_id);
1205 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
1206 rxq->rx_free_thresh;
1209 * Need to rewind any previous receives if we cannot
1210 * allocate new buffers to replenish the old ones.
1212 rxq->rx_nb_avail = 0;
1213 rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
1214 for (i = 0, j = rxq->rx_tail; i < nb_rx; ++i, ++j)
1215 rxq->sw_ring[j].mbuf = rxq->rx_stage[i];
1220 /* update tail pointer */
1222 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, cur_free_trigger);
1225 if (rxq->rx_tail >= rxq->nb_rx_desc)
1228 /* received any packets this loop? */
1229 if (rxq->rx_nb_avail)
1230 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1235 /* split requests into chunks of size RTE_PMD_IXGBE_RX_MAX_BURST */
1237 ixgbe_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1242 if (unlikely(nb_pkts == 0))
1245 if (likely(nb_pkts <= RTE_PMD_IXGBE_RX_MAX_BURST))
1246 return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
1248 /* request is relatively large, chunk it up */
1252 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_RX_MAX_BURST);
1253 ret = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
1254 nb_rx = (uint16_t)(nb_rx + ret);
1255 nb_pkts = (uint16_t)(nb_pkts - ret);
1264 ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1267 struct ixgbe_rx_queue *rxq;
1268 volatile union ixgbe_adv_rx_desc *rx_ring;
1269 volatile union ixgbe_adv_rx_desc *rxdp;
1270 struct ixgbe_rx_entry *sw_ring;
1271 struct ixgbe_rx_entry *rxe;
1272 struct rte_mbuf *rxm;
1273 struct rte_mbuf *nmb;
1274 union ixgbe_adv_rx_desc rxd;
1287 rx_id = rxq->rx_tail;
1288 rx_ring = rxq->rx_ring;
1289 sw_ring = rxq->sw_ring;
1290 while (nb_rx < nb_pkts) {
1292 * The order of operations here is important as the DD status
1293 * bit must not be read after any other descriptor fields.
1294 * rx_ring and rxdp are pointing to volatile data so the order
1295 * of accesses cannot be reordered by the compiler. If they were
1296 * not volatile, they could be reordered which could lead to
1297 * using invalid descriptor fields when read from rxd.
1299 rxdp = &rx_ring[rx_id];
1300 staterr = rxdp->wb.upper.status_error;
1301 if (!(staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1308 * If the IXGBE_RXDADV_STAT_EOP flag is not set, the RX packet
1309 * is likely to be invalid and to be dropped by the various
1310 * validation checks performed by the network stack.
1312 * Allocate a new mbuf to replenish the RX ring descriptor.
1313 * If the allocation fails:
1314 * - arrange for that RX descriptor to be the first one
1315 * being parsed the next time the receive function is
1316 * invoked [on the same queue].
1318 * - Stop parsing the RX ring and return immediately.
1320 * This policy do not drop the packet received in the RX
1321 * descriptor for which the allocation of a new mbuf failed.
1322 * Thus, it allows that packet to be later retrieved if
1323 * mbuf have been freed in the mean time.
1324 * As a side effect, holding RX descriptors instead of
1325 * systematically giving them back to the NIC may lead to
1326 * RX ring exhaustion situations.
1327 * However, the NIC can gracefully prevent such situations
1328 * to happen by sending specific "back-pressure" flow control
1329 * frames to its peer(s).
1331 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1332 "ext_err_stat=0x%08x pkt_len=%u",
1333 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1334 (unsigned) rx_id, (unsigned) staterr,
1335 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1337 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1339 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1340 "queue_id=%u", (unsigned) rxq->port_id,
1341 (unsigned) rxq->queue_id);
1342 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1347 rxe = &sw_ring[rx_id];
1349 if (rx_id == rxq->nb_rx_desc)
1352 /* Prefetch next mbuf while processing current one. */
1353 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1356 * When next RX descriptor is on a cache-line boundary,
1357 * prefetch the next 4 RX descriptors and the next 8 pointers
1360 if ((rx_id & 0x3) == 0) {
1361 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1362 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1368 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1369 rxdp->read.hdr_addr = 0;
1370 rxdp->read.pkt_addr = dma_addr;
1373 * Initialize the returned mbuf.
1374 * 1) setup generic mbuf fields:
1375 * - number of segments,
1378 * - RX port identifier.
1379 * 2) integrate hardware offload data, if any:
1380 * - RSS flag & hash,
1381 * - IP checksum flag,
1382 * - VLAN TCI, if any,
1385 pkt_len = (uint16_t) (rte_le_to_cpu_16(rxd.wb.upper.length) -
1387 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1388 rte_packet_prefetch((char *)rxm->buf_addr + rxm->data_off);
1391 rxm->pkt_len = pkt_len;
1392 rxm->data_len = pkt_len;
1393 rxm->port = rxq->port_id;
1395 pkt_info = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.hs_rss.
1397 /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
1398 rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
1400 pkt_flags = rx_desc_status_to_pkt_flags(staterr);
1401 pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
1402 pkt_flags = pkt_flags |
1403 ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info);
1404 rxm->ol_flags = pkt_flags;
1405 rxm->packet_type = ixgbe_rxd_pkt_info_to_pkt_type(pkt_info);
1407 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1408 rxm->hash.rss = rte_le_to_cpu_32(
1409 rxd.wb.lower.hi_dword.rss);
1410 else if (pkt_flags & PKT_RX_FDIR) {
1411 rxm->hash.fdir.hash = rte_le_to_cpu_16(
1412 rxd.wb.lower.hi_dword.csum_ip.csum) &
1413 IXGBE_ATR_HASH_MASK;
1414 rxm->hash.fdir.id = rte_le_to_cpu_16(
1415 rxd.wb.lower.hi_dword.csum_ip.ip_id);
1418 * Store the mbuf address into the next entry of the array
1419 * of returned packets.
1421 rx_pkts[nb_rx++] = rxm;
1423 rxq->rx_tail = rx_id;
1426 * If the number of free RX descriptors is greater than the RX free
1427 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1429 * Update the RDT with the value of the last processed RX descriptor
1430 * minus 1, to guarantee that the RDT register is never equal to the
1431 * RDH register, which creates a "full" ring situtation from the
1432 * hardware point of view...
1434 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1435 if (nb_hold > rxq->rx_free_thresh) {
1436 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1437 "nb_hold=%u nb_rx=%u",
1438 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1439 (unsigned) rx_id, (unsigned) nb_hold,
1441 rx_id = (uint16_t) ((rx_id == 0) ?
1442 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1443 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1446 rxq->nb_rx_hold = nb_hold;
1451 * Detect an RSC descriptor.
1453 static inline uint32_t
1454 ixgbe_rsc_count(union ixgbe_adv_rx_desc *rx)
1456 return (rte_le_to_cpu_32(rx->wb.lower.lo_dword.data) &
1457 IXGBE_RXDADV_RSCCNT_MASK) >> IXGBE_RXDADV_RSCCNT_SHIFT;
1461 * ixgbe_fill_cluster_head_buf - fill the first mbuf of the returned packet
1463 * Fill the following info in the HEAD buffer of the Rx cluster:
1464 * - RX port identifier
1465 * - hardware offload data, if any:
1467 * - IP checksum flag
1468 * - VLAN TCI, if any
1470 * @head HEAD of the packet cluster
1471 * @desc HW descriptor to get data from
1472 * @port_id Port ID of the Rx queue
1475 ixgbe_fill_cluster_head_buf(
1476 struct rte_mbuf *head,
1477 union ixgbe_adv_rx_desc *desc,
1484 head->port = port_id;
1486 /* The vlan_tci field is only valid when PKT_RX_VLAN_PKT is
1487 * set in the pkt_flags field.
1489 head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan);
1490 pkt_info = rte_le_to_cpu_32(desc->wb.lower.lo_dword.hs_rss.pkt_info);
1491 pkt_flags = rx_desc_status_to_pkt_flags(staterr);
1492 pkt_flags |= rx_desc_error_to_pkt_flags(staterr);
1493 pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info);
1494 head->ol_flags = pkt_flags;
1495 head->packet_type = ixgbe_rxd_pkt_info_to_pkt_type(pkt_info);
1497 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1498 head->hash.rss = rte_le_to_cpu_32(desc->wb.lower.hi_dword.rss);
1499 else if (pkt_flags & PKT_RX_FDIR) {
1500 head->hash.fdir.hash =
1501 rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.csum)
1502 & IXGBE_ATR_HASH_MASK;
1503 head->hash.fdir.id =
1504 rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.ip_id);
1509 * ixgbe_recv_pkts_lro - receive handler for and LRO case.
1511 * @rx_queue Rx queue handle
1512 * @rx_pkts table of received packets
1513 * @nb_pkts size of rx_pkts table
1514 * @bulk_alloc if TRUE bulk allocation is used for a HW ring refilling
1516 * Handles the Rx HW ring completions when RSC feature is configured. Uses an
1517 * additional ring of ixgbe_rsc_entry's that will hold the relevant RSC info.
1519 * We use the same logic as in Linux and in FreeBSD ixgbe drivers:
1520 * 1) When non-EOP RSC completion arrives:
1521 * a) Update the HEAD of the current RSC aggregation cluster with the new
1522 * segment's data length.
1523 * b) Set the "next" pointer of the current segment to point to the segment
1524 * at the NEXTP index.
1525 * c) Pass the HEAD of RSC aggregation cluster on to the next NEXTP entry
1526 * in the sw_rsc_ring.
1527 * 2) When EOP arrives we just update the cluster's total length and offload
1528 * flags and deliver the cluster up to the upper layers. In our case - put it
1529 * in the rx_pkts table.
1531 * Returns the number of received packets/clusters (according to the "bulk
1532 * receive" interface).
1534 static inline uint16_t
1535 ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
1538 struct ixgbe_rx_queue *rxq = rx_queue;
1539 volatile union ixgbe_adv_rx_desc *rx_ring = rxq->rx_ring;
1540 struct ixgbe_rx_entry *sw_ring = rxq->sw_ring;
1541 struct ixgbe_scattered_rx_entry *sw_sc_ring = rxq->sw_sc_ring;
1542 uint16_t rx_id = rxq->rx_tail;
1544 uint16_t nb_hold = rxq->nb_rx_hold;
1545 uint16_t prev_id = rxq->rx_tail;
1547 while (nb_rx < nb_pkts) {
1549 struct ixgbe_rx_entry *rxe;
1550 struct ixgbe_scattered_rx_entry *sc_entry;
1551 struct ixgbe_scattered_rx_entry *next_sc_entry;
1552 struct ixgbe_rx_entry *next_rxe;
1553 struct rte_mbuf *first_seg;
1554 struct rte_mbuf *rxm;
1555 struct rte_mbuf *nmb;
1556 union ixgbe_adv_rx_desc rxd;
1559 volatile union ixgbe_adv_rx_desc *rxdp;
1564 * The code in this whole file uses the volatile pointer to
1565 * ensure the read ordering of the status and the rest of the
1566 * descriptor fields (on the compiler level only!!!). This is so
1567 * UGLY - why not to just use the compiler barrier instead? DPDK
1568 * even has the rte_compiler_barrier() for that.
1570 * But most importantly this is just wrong because this doesn't
1571 * ensure memory ordering in a general case at all. For
1572 * instance, DPDK is supposed to work on Power CPUs where
1573 * compiler barrier may just not be enough!
1575 * I tried to write only this function properly to have a
1576 * starting point (as a part of an LRO/RSC series) but the
1577 * compiler cursed at me when I tried to cast away the
1578 * "volatile" from rx_ring (yes, it's volatile too!!!). So, I'm
1579 * keeping it the way it is for now.
1581 * The code in this file is broken in so many other places and
1582 * will just not work on a big endian CPU anyway therefore the
1583 * lines below will have to be revisited together with the rest
1587 * - Get rid of "volatile" crap and let the compiler do its
1589 * - Use the proper memory barrier (rte_rmb()) to ensure the
1590 * memory ordering below.
1592 rxdp = &rx_ring[rx_id];
1593 staterr = rte_le_to_cpu_32(rxdp->wb.upper.status_error);
1595 if (!(staterr & IXGBE_RXDADV_STAT_DD))
1600 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1601 "staterr=0x%x data_len=%u",
1602 rxq->port_id, rxq->queue_id, rx_id, staterr,
1603 rte_le_to_cpu_16(rxd.wb.upper.length));
1606 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1608 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed "
1609 "port_id=%u queue_id=%u",
1610 rxq->port_id, rxq->queue_id);
1612 rte_eth_devices[rxq->port_id].data->
1613 rx_mbuf_alloc_failed++;
1617 else if (nb_hold > rxq->rx_free_thresh) {
1618 uint16_t next_rdt = rxq->rx_free_trigger;
1620 if (!ixgbe_rx_alloc_bufs(rxq, false)) {
1622 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr,
1624 nb_hold -= rxq->rx_free_thresh;
1626 PMD_RX_LOG(DEBUG, "RX bulk alloc failed "
1627 "port_id=%u queue_id=%u",
1628 rxq->port_id, rxq->queue_id);
1630 rte_eth_devices[rxq->port_id].data->
1631 rx_mbuf_alloc_failed++;
1637 rxe = &sw_ring[rx_id];
1638 eop = staterr & IXGBE_RXDADV_STAT_EOP;
1640 next_id = rx_id + 1;
1641 if (next_id == rxq->nb_rx_desc)
1644 /* Prefetch next mbuf while processing current one. */
1645 rte_ixgbe_prefetch(sw_ring[next_id].mbuf);
1648 * When next RX descriptor is on a cache-line boundary,
1649 * prefetch the next 4 RX descriptors and the next 4 pointers
1652 if ((next_id & 0x3) == 0) {
1653 rte_ixgbe_prefetch(&rx_ring[next_id]);
1654 rte_ixgbe_prefetch(&sw_ring[next_id]);
1661 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1663 * Update RX descriptor with the physical address of the
1664 * new data buffer of the new allocated mbuf.
1668 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1669 rxdp->read.hdr_addr = 0;
1670 rxdp->read.pkt_addr = dma;
1675 * Set data length & data buffer address of mbuf.
1677 data_len = rte_le_to_cpu_16(rxd.wb.upper.length);
1678 rxm->data_len = data_len;
1683 * Get next descriptor index:
1684 * - For RSC it's in the NEXTP field.
1685 * - For a scattered packet - it's just a following
1688 if (ixgbe_rsc_count(&rxd))
1690 (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1691 IXGBE_RXDADV_NEXTP_SHIFT;
1695 next_sc_entry = &sw_sc_ring[nextp_id];
1696 next_rxe = &sw_ring[nextp_id];
1697 rte_ixgbe_prefetch(next_rxe);
1700 sc_entry = &sw_sc_ring[rx_id];
1701 first_seg = sc_entry->fbuf;
1702 sc_entry->fbuf = NULL;
1705 * If this is the first buffer of the received packet,
1706 * set the pointer to the first mbuf of the packet and
1707 * initialize its context.
1708 * Otherwise, update the total length and the number of segments
1709 * of the current scattered packet, and update the pointer to
1710 * the last mbuf of the current packet.
1712 if (first_seg == NULL) {
1714 first_seg->pkt_len = data_len;
1715 first_seg->nb_segs = 1;
1717 first_seg->pkt_len += data_len;
1718 first_seg->nb_segs++;
1725 * If this is not the last buffer of the received packet, update
1726 * the pointer to the first mbuf at the NEXTP entry in the
1727 * sw_sc_ring and continue to parse the RX ring.
1730 rxm->next = next_rxe->mbuf;
1731 next_sc_entry->fbuf = first_seg;
1736 * This is the last buffer of the received packet - return
1737 * the current cluster to the user.
1741 /* Initialize the first mbuf of the returned packet */
1742 ixgbe_fill_cluster_head_buf(first_seg, &rxd, rxq->port_id,
1746 * Deal with the case, when HW CRC srip is disabled.
1747 * That can't happen when LRO is enabled, but still could
1748 * happen for scattered RX mode.
1750 first_seg->pkt_len -= rxq->crc_len;
1751 if (unlikely(rxm->data_len <= rxq->crc_len)) {
1752 struct rte_mbuf *lp;
1754 for (lp = first_seg; lp->next != rxm; lp = lp->next)
1757 first_seg->nb_segs--;
1758 lp->data_len -= rxq->crc_len - rxm->data_len;
1760 rte_pktmbuf_free_seg(rxm);
1762 rxm->data_len -= rxq->crc_len;
1764 /* Prefetch data of first segment, if configured to do so. */
1765 rte_packet_prefetch((char *)first_seg->buf_addr +
1766 first_seg->data_off);
1769 * Store the mbuf address into the next entry of the array
1770 * of returned packets.
1772 rx_pkts[nb_rx++] = first_seg;
1776 * Record index of the next RX descriptor to probe.
1778 rxq->rx_tail = rx_id;
1781 * If the number of free RX descriptors is greater than the RX free
1782 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1784 * Update the RDT with the value of the last processed RX descriptor
1785 * minus 1, to guarantee that the RDT register is never equal to the
1786 * RDH register, which creates a "full" ring situtation from the
1787 * hardware point of view...
1789 if (!bulk_alloc && nb_hold > rxq->rx_free_thresh) {
1790 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1791 "nb_hold=%u nb_rx=%u",
1792 rxq->port_id, rxq->queue_id, rx_id, nb_hold, nb_rx);
1795 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, prev_id);
1799 rxq->nb_rx_hold = nb_hold;
1804 ixgbe_recv_pkts_lro_single_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1807 return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, false);
1811 ixgbe_recv_pkts_lro_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1814 return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, true);
1817 /*********************************************************************
1819 * Queue management functions
1821 **********************************************************************/
1824 * Rings setup and release.
1826 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
1827 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
1828 * also optimize cache line size effect. H/W supports up to cache line size 128.
1830 #define IXGBE_ALIGN 128
1833 * Maximum number of Ring Descriptors.
1835 * Since RDLEN/TDLEN should be multiple of 128 bytes, the number of ring
1836 * descriptors should meet the following condition:
1837 * (num_ring_desc * sizeof(rx/tx descriptor)) % 128 == 0
1839 #define IXGBE_MIN_RING_DESC 32
1840 #define IXGBE_MAX_RING_DESC 4096
1843 * Create memzone for HW rings. malloc can't be used as the physical address is
1844 * needed. If the memzone is already created, then this function returns a ptr
1847 static const struct rte_memzone * __attribute__((cold))
1848 ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
1849 uint16_t queue_id, uint32_t ring_size, int socket_id)
1851 char z_name[RTE_MEMZONE_NAMESIZE];
1852 const struct rte_memzone *mz;
1854 snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
1855 dev->driver->pci_drv.name, ring_name,
1856 dev->data->port_id, queue_id);
1858 mz = rte_memzone_lookup(z_name);
1862 #ifdef RTE_LIBRTE_XEN_DOM0
1863 return rte_memzone_reserve_bounded(z_name, ring_size,
1864 socket_id, 0, IXGBE_ALIGN, RTE_PGSIZE_2M);
1866 return rte_memzone_reserve_aligned(z_name, ring_size,
1867 socket_id, 0, IXGBE_ALIGN);
1871 static void __attribute__((cold))
1872 ixgbe_tx_queue_release_mbufs(struct ixgbe_tx_queue *txq)
1876 if (txq->sw_ring != NULL) {
1877 for (i = 0; i < txq->nb_tx_desc; i++) {
1878 if (txq->sw_ring[i].mbuf != NULL) {
1879 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
1880 txq->sw_ring[i].mbuf = NULL;
1886 static void __attribute__((cold))
1887 ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq)
1890 txq->sw_ring != NULL)
1891 rte_free(txq->sw_ring);
1894 static void __attribute__((cold))
1895 ixgbe_tx_queue_release(struct ixgbe_tx_queue *txq)
1897 if (txq != NULL && txq->ops != NULL) {
1898 txq->ops->release_mbufs(txq);
1899 txq->ops->free_swring(txq);
1904 void __attribute__((cold))
1905 ixgbe_dev_tx_queue_release(void *txq)
1907 ixgbe_tx_queue_release(txq);
1910 /* (Re)set dynamic ixgbe_tx_queue fields to defaults */
1911 static void __attribute__((cold))
1912 ixgbe_reset_tx_queue(struct ixgbe_tx_queue *txq)
1914 static const union ixgbe_adv_tx_desc zeroed_desc = {{0}};
1915 struct ixgbe_tx_entry *txe = txq->sw_ring;
1918 /* Zero out HW ring memory */
1919 for (i = 0; i < txq->nb_tx_desc; i++) {
1920 txq->tx_ring[i] = zeroed_desc;
1923 /* Initialize SW ring entries */
1924 prev = (uint16_t) (txq->nb_tx_desc - 1);
1925 for (i = 0; i < txq->nb_tx_desc; i++) {
1926 volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i];
1927 txd->wb.status = rte_cpu_to_le_32(IXGBE_TXD_STAT_DD);
1930 txe[prev].next_id = i;
1934 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
1935 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
1938 txq->nb_tx_used = 0;
1940 * Always allow 1 descriptor to be un-allocated to avoid
1941 * a H/W race condition
1943 txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
1944 txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
1946 memset((void*)&txq->ctx_cache, 0,
1947 IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info));
1950 static const struct ixgbe_txq_ops def_txq_ops = {
1951 .release_mbufs = ixgbe_tx_queue_release_mbufs,
1952 .free_swring = ixgbe_tx_free_swring,
1953 .reset = ixgbe_reset_tx_queue,
1956 /* Takes an ethdev and a queue and sets up the tx function to be used based on
1957 * the queue parameters. Used in tx_queue_setup by primary process and then
1958 * in dev_init by secondary process when attaching to an existing ethdev.
1960 void __attribute__((cold))
1961 ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq)
1963 /* Use a simple Tx queue (no offloads, no multi segs) if possible */
1964 if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS)
1965 && (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) {
1966 PMD_INIT_LOG(DEBUG, "Using simple tx code path");
1967 #ifdef RTE_IXGBE_INC_VECTOR
1968 if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
1969 (rte_eal_process_type() != RTE_PROC_PRIMARY ||
1970 ixgbe_txq_vec_setup(txq) == 0)) {
1971 PMD_INIT_LOG(DEBUG, "Vector tx enabled.");
1972 dev->tx_pkt_burst = ixgbe_xmit_pkts_vec;
1975 dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
1977 PMD_INIT_LOG(DEBUG, "Using full-featured tx code path");
1979 " - txq_flags = %lx " "[IXGBE_SIMPLE_FLAGS=%lx]",
1980 (unsigned long)txq->txq_flags,
1981 (unsigned long)IXGBE_SIMPLE_FLAGS);
1983 " - tx_rs_thresh = %lu " "[RTE_PMD_IXGBE_TX_MAX_BURST=%lu]",
1984 (unsigned long)txq->tx_rs_thresh,
1985 (unsigned long)RTE_PMD_IXGBE_TX_MAX_BURST);
1986 dev->tx_pkt_burst = ixgbe_xmit_pkts;
1990 int __attribute__((cold))
1991 ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
1994 unsigned int socket_id,
1995 const struct rte_eth_txconf *tx_conf)
1997 const struct rte_memzone *tz;
1998 struct ixgbe_tx_queue *txq;
1999 struct ixgbe_hw *hw;
2000 uint16_t tx_rs_thresh, tx_free_thresh;
2002 PMD_INIT_FUNC_TRACE();
2003 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2006 * Validate number of transmit descriptors.
2007 * It must not exceed hardware maximum, and must be multiple
2010 if (((nb_desc * sizeof(union ixgbe_adv_tx_desc)) % IXGBE_ALIGN) != 0 ||
2011 (nb_desc > IXGBE_MAX_RING_DESC) ||
2012 (nb_desc < IXGBE_MIN_RING_DESC)) {
2017 * The following two parameters control the setting of the RS bit on
2018 * transmit descriptors.
2019 * TX descriptors will have their RS bit set after txq->tx_rs_thresh
2020 * descriptors have been used.
2021 * The TX descriptor ring will be cleaned after txq->tx_free_thresh
2022 * descriptors are used or if the number of descriptors required
2023 * to transmit a packet is greater than the number of free TX
2025 * The following constraints must be satisfied:
2026 * tx_rs_thresh must be greater than 0.
2027 * tx_rs_thresh must be less than the size of the ring minus 2.
2028 * tx_rs_thresh must be less than or equal to tx_free_thresh.
2029 * tx_rs_thresh must be a divisor of the ring size.
2030 * tx_free_thresh must be greater than 0.
2031 * tx_free_thresh must be less than the size of the ring minus 3.
2032 * One descriptor in the TX ring is used as a sentinel to avoid a
2033 * H/W race condition, hence the maximum threshold constraints.
2034 * When set to zero use default values.
2036 tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ?
2037 tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
2038 tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
2039 tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
2040 if (tx_rs_thresh >= (nb_desc - 2)) {
2041 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the number "
2042 "of TX descriptors minus 2. (tx_rs_thresh=%u "
2043 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2044 (int)dev->data->port_id, (int)queue_idx);
2047 if (tx_free_thresh >= (nb_desc - 3)) {
2048 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the "
2049 "tx_free_thresh must be less than the number of "
2050 "TX descriptors minus 3. (tx_free_thresh=%u "
2051 "port=%d queue=%d)",
2052 (unsigned int)tx_free_thresh,
2053 (int)dev->data->port_id, (int)queue_idx);
2056 if (tx_rs_thresh > tx_free_thresh) {
2057 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or equal to "
2058 "tx_free_thresh. (tx_free_thresh=%u "
2059 "tx_rs_thresh=%u port=%d queue=%d)",
2060 (unsigned int)tx_free_thresh,
2061 (unsigned int)tx_rs_thresh,
2062 (int)dev->data->port_id,
2066 if ((nb_desc % tx_rs_thresh) != 0) {
2067 PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the "
2068 "number of TX descriptors. (tx_rs_thresh=%u "
2069 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2070 (int)dev->data->port_id, (int)queue_idx);
2075 * If rs_bit_thresh is greater than 1, then TX WTHRESH should be
2076 * set to 0. If WTHRESH is greater than zero, the RS bit is ignored
2077 * by the NIC and all descriptors are written back after the NIC
2078 * accumulates WTHRESH descriptors.
2080 if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) {
2081 PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if "
2082 "tx_rs_thresh is greater than 1. (tx_rs_thresh=%u "
2083 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2084 (int)dev->data->port_id, (int)queue_idx);
2088 /* Free memory prior to re-allocation if needed... */
2089 if (dev->data->tx_queues[queue_idx] != NULL) {
2090 ixgbe_tx_queue_release(dev->data->tx_queues[queue_idx]);
2091 dev->data->tx_queues[queue_idx] = NULL;
2094 /* First allocate the tx queue data structure */
2095 txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct ixgbe_tx_queue),
2096 RTE_CACHE_LINE_SIZE, socket_id);
2101 * Allocate TX ring hardware descriptors. A memzone large enough to
2102 * handle the maximum ring size is allocated in order to allow for
2103 * resizing in later calls to the queue setup function.
2105 tz = ring_dma_zone_reserve(dev, "tx_ring", queue_idx,
2106 sizeof(union ixgbe_adv_tx_desc) * IXGBE_MAX_RING_DESC,
2109 ixgbe_tx_queue_release(txq);
2113 txq->nb_tx_desc = nb_desc;
2114 txq->tx_rs_thresh = tx_rs_thresh;
2115 txq->tx_free_thresh = tx_free_thresh;
2116 txq->pthresh = tx_conf->tx_thresh.pthresh;
2117 txq->hthresh = tx_conf->tx_thresh.hthresh;
2118 txq->wthresh = tx_conf->tx_thresh.wthresh;
2119 txq->queue_id = queue_idx;
2120 txq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2121 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2122 txq->port_id = dev->data->port_id;
2123 txq->txq_flags = tx_conf->txq_flags;
2124 txq->ops = &def_txq_ops;
2125 txq->tx_deferred_start = tx_conf->tx_deferred_start;
2128 * Modification to set VFTDT for virtual function if vf is detected
2130 if (hw->mac.type == ixgbe_mac_82599_vf ||
2131 hw->mac.type == ixgbe_mac_X540_vf ||
2132 hw->mac.type == ixgbe_mac_X550_vf ||
2133 hw->mac.type == ixgbe_mac_X550EM_x_vf)
2134 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_VFTDT(queue_idx));
2136 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_TDT(txq->reg_idx));
2137 #ifndef RTE_LIBRTE_XEN_DOM0
2138 txq->tx_ring_phys_addr = (uint64_t) tz->phys_addr;
2140 txq->tx_ring_phys_addr = rte_mem_phy2mch(tz->memseg_id, tz->phys_addr);
2142 txq->tx_ring = (union ixgbe_adv_tx_desc *) tz->addr;
2144 /* Allocate software ring */
2145 txq->sw_ring = rte_zmalloc_socket("txq->sw_ring",
2146 sizeof(struct ixgbe_tx_entry) * nb_desc,
2147 RTE_CACHE_LINE_SIZE, socket_id);
2148 if (txq->sw_ring == NULL) {
2149 ixgbe_tx_queue_release(txq);
2152 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
2153 txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
2155 /* set up vector or scalar TX function as appropriate */
2156 ixgbe_set_tx_function(dev, txq);
2158 txq->ops->reset(txq);
2160 dev->data->tx_queues[queue_idx] = txq;
2167 * ixgbe_free_sc_cluster - free the not-yet-completed scattered cluster
2169 * The "next" pointer of the last segment of (not-yet-completed) RSC clusters
2170 * in the sw_rsc_ring is not set to NULL but rather points to the next
2171 * mbuf of this RSC aggregation (that has not been completed yet and still
2172 * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we
2173 * will just free first "nb_segs" segments of the cluster explicitly by calling
2174 * an rte_pktmbuf_free_seg().
2176 * @m scattered cluster head
2178 static void __attribute__((cold))
2179 ixgbe_free_sc_cluster(struct rte_mbuf *m)
2181 uint8_t i, nb_segs = m->nb_segs;
2182 struct rte_mbuf *next_seg;
2184 for (i = 0; i < nb_segs; i++) {
2186 rte_pktmbuf_free_seg(m);
2191 static void __attribute__((cold))
2192 ixgbe_rx_queue_release_mbufs(struct ixgbe_rx_queue *rxq)
2196 #ifdef RTE_IXGBE_INC_VECTOR
2197 /* SSE Vector driver has a different way of releasing mbufs. */
2198 if (rxq->rx_using_sse) {
2199 ixgbe_rx_queue_release_mbufs_vec(rxq);
2204 if (rxq->sw_ring != NULL) {
2205 for (i = 0; i < rxq->nb_rx_desc; i++) {
2206 if (rxq->sw_ring[i].mbuf != NULL) {
2207 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
2208 rxq->sw_ring[i].mbuf = NULL;
2211 if (rxq->rx_nb_avail) {
2212 for (i = 0; i < rxq->rx_nb_avail; ++i) {
2213 struct rte_mbuf *mb;
2214 mb = rxq->rx_stage[rxq->rx_next_avail + i];
2215 rte_pktmbuf_free_seg(mb);
2217 rxq->rx_nb_avail = 0;
2221 if (rxq->sw_sc_ring)
2222 for (i = 0; i < rxq->nb_rx_desc; i++)
2223 if (rxq->sw_sc_ring[i].fbuf) {
2224 ixgbe_free_sc_cluster(rxq->sw_sc_ring[i].fbuf);
2225 rxq->sw_sc_ring[i].fbuf = NULL;
2229 static void __attribute__((cold))
2230 ixgbe_rx_queue_release(struct ixgbe_rx_queue *rxq)
2233 ixgbe_rx_queue_release_mbufs(rxq);
2234 rte_free(rxq->sw_ring);
2235 rte_free(rxq->sw_sc_ring);
2240 void __attribute__((cold))
2241 ixgbe_dev_rx_queue_release(void *rxq)
2243 ixgbe_rx_queue_release(rxq);
2247 * Check if Rx Burst Bulk Alloc function can be used.
2249 * 0: the preconditions are satisfied and the bulk allocation function
2251 * -EINVAL: the preconditions are NOT satisfied and the default Rx burst
2252 * function must be used.
2254 static inline int __attribute__((cold))
2255 check_rx_burst_bulk_alloc_preconditions(struct ixgbe_rx_queue *rxq)
2260 * Make sure the following pre-conditions are satisfied:
2261 * rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST
2262 * rxq->rx_free_thresh < rxq->nb_rx_desc
2263 * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
2264 * rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST)
2265 * Scattered packets are not supported. This should be checked
2266 * outside of this function.
2268 if (!(rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST)) {
2269 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2270 "rxq->rx_free_thresh=%d, "
2271 "RTE_PMD_IXGBE_RX_MAX_BURST=%d",
2272 rxq->rx_free_thresh, RTE_PMD_IXGBE_RX_MAX_BURST);
2274 } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) {
2275 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2276 "rxq->rx_free_thresh=%d, "
2277 "rxq->nb_rx_desc=%d",
2278 rxq->rx_free_thresh, rxq->nb_rx_desc);
2280 } else if (!((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0)) {
2281 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2282 "rxq->nb_rx_desc=%d, "
2283 "rxq->rx_free_thresh=%d",
2284 rxq->nb_rx_desc, rxq->rx_free_thresh);
2286 } else if (!(rxq->nb_rx_desc <
2287 (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST))) {
2288 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2289 "rxq->nb_rx_desc=%d, "
2290 "IXGBE_MAX_RING_DESC=%d, "
2291 "RTE_PMD_IXGBE_RX_MAX_BURST=%d",
2292 rxq->nb_rx_desc, IXGBE_MAX_RING_DESC,
2293 RTE_PMD_IXGBE_RX_MAX_BURST);
2300 /* Reset dynamic ixgbe_rx_queue fields back to defaults */
2301 static void __attribute__((cold))
2302 ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)
2304 static const union ixgbe_adv_rx_desc zeroed_desc = {{0}};
2306 uint16_t len = rxq->nb_rx_desc;
2309 * By default, the Rx queue setup function allocates enough memory for
2310 * IXGBE_MAX_RING_DESC. The Rx Burst bulk allocation function requires
2311 * extra memory at the end of the descriptor ring to be zero'd out. A
2312 * pre-condition for using the Rx burst bulk alloc function is that the
2313 * number of descriptors is less than or equal to
2314 * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the
2315 * constraints here to see if we need to zero out memory after the end
2316 * of the H/W descriptor ring.
2318 if (adapter->rx_bulk_alloc_allowed)
2319 /* zero out extra memory */
2320 len += RTE_PMD_IXGBE_RX_MAX_BURST;
2323 * Zero out HW ring memory. Zero out extra memory at the end of
2324 * the H/W ring so look-ahead logic in Rx Burst bulk alloc function
2325 * reads extra memory as zeros.
2327 for (i = 0; i < len; i++) {
2328 rxq->rx_ring[i] = zeroed_desc;
2332 * initialize extra software ring entries. Space for these extra
2333 * entries is always allocated
2335 memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
2336 for (i = rxq->nb_rx_desc; i < len; ++i) {
2337 rxq->sw_ring[i].mbuf = &rxq->fake_mbuf;
2340 rxq->rx_nb_avail = 0;
2341 rxq->rx_next_avail = 0;
2342 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
2344 rxq->nb_rx_hold = 0;
2345 rxq->pkt_first_seg = NULL;
2346 rxq->pkt_last_seg = NULL;
2348 #ifdef RTE_IXGBE_INC_VECTOR
2349 rxq->rxrearm_start = 0;
2350 rxq->rxrearm_nb = 0;
2354 int __attribute__((cold))
2355 ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
2358 unsigned int socket_id,
2359 const struct rte_eth_rxconf *rx_conf,
2360 struct rte_mempool *mp)
2362 const struct rte_memzone *rz;
2363 struct ixgbe_rx_queue *rxq;
2364 struct ixgbe_hw *hw;
2366 struct ixgbe_adapter *adapter =
2367 (struct ixgbe_adapter *)dev->data->dev_private;
2369 PMD_INIT_FUNC_TRACE();
2370 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2373 * Validate number of receive descriptors.
2374 * It must not exceed hardware maximum, and must be multiple
2377 if (((nb_desc * sizeof(union ixgbe_adv_rx_desc)) % IXGBE_ALIGN) != 0 ||
2378 (nb_desc > IXGBE_MAX_RING_DESC) ||
2379 (nb_desc < IXGBE_MIN_RING_DESC)) {
2383 /* Free memory prior to re-allocation if needed... */
2384 if (dev->data->rx_queues[queue_idx] != NULL) {
2385 ixgbe_rx_queue_release(dev->data->rx_queues[queue_idx]);
2386 dev->data->rx_queues[queue_idx] = NULL;
2389 /* First allocate the rx queue data structure */
2390 rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct ixgbe_rx_queue),
2391 RTE_CACHE_LINE_SIZE, socket_id);
2395 rxq->nb_rx_desc = nb_desc;
2396 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
2397 rxq->queue_id = queue_idx;
2398 rxq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2399 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2400 rxq->port_id = dev->data->port_id;
2401 rxq->crc_len = (uint8_t) ((dev->data->dev_conf.rxmode.hw_strip_crc) ?
2403 rxq->drop_en = rx_conf->rx_drop_en;
2404 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
2407 * Allocate RX ring hardware descriptors. A memzone large enough to
2408 * handle the maximum ring size is allocated in order to allow for
2409 * resizing in later calls to the queue setup function.
2411 rz = ring_dma_zone_reserve(dev, "rx_ring", queue_idx,
2412 RX_RING_SZ, socket_id);
2414 ixgbe_rx_queue_release(rxq);
2419 * Zero init all the descriptors in the ring.
2421 memset (rz->addr, 0, RX_RING_SZ);
2424 * Modified to setup VFRDT for Virtual Function
2426 if (hw->mac.type == ixgbe_mac_82599_vf ||
2427 hw->mac.type == ixgbe_mac_X540_vf ||
2428 hw->mac.type == ixgbe_mac_X550_vf ||
2429 hw->mac.type == ixgbe_mac_X550EM_x_vf) {
2431 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDT(queue_idx));
2433 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDH(queue_idx));
2437 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDT(rxq->reg_idx));
2439 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDH(rxq->reg_idx));
2441 #ifndef RTE_LIBRTE_XEN_DOM0
2442 rxq->rx_ring_phys_addr = (uint64_t) rz->phys_addr;
2444 rxq->rx_ring_phys_addr = rte_mem_phy2mch(rz->memseg_id, rz->phys_addr);
2446 rxq->rx_ring = (union ixgbe_adv_rx_desc *) rz->addr;
2449 * Certain constraints must be met in order to use the bulk buffer
2450 * allocation Rx burst function. If any of Rx queues doesn't meet them
2451 * the feature should be disabled for the whole port.
2453 if (check_rx_burst_bulk_alloc_preconditions(rxq)) {
2454 PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Rx Bulk Alloc "
2455 "preconditions - canceling the feature for "
2456 "the whole port[%d]",
2457 rxq->queue_id, rxq->port_id);
2458 adapter->rx_bulk_alloc_allowed = false;
2462 * Allocate software ring. Allow for space at the end of the
2463 * S/W ring to make sure look-ahead logic in bulk alloc Rx burst
2464 * function does not access an invalid memory region.
2467 if (adapter->rx_bulk_alloc_allowed)
2468 len += RTE_PMD_IXGBE_RX_MAX_BURST;
2470 rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
2471 sizeof(struct ixgbe_rx_entry) * len,
2472 RTE_CACHE_LINE_SIZE, socket_id);
2473 if (!rxq->sw_ring) {
2474 ixgbe_rx_queue_release(rxq);
2479 * Always allocate even if it's not going to be needed in order to
2480 * simplify the code.
2482 * This ring is used in LRO and Scattered Rx cases and Scattered Rx may
2483 * be requested in ixgbe_dev_rx_init(), which is called later from
2487 rte_zmalloc_socket("rxq->sw_sc_ring",
2488 sizeof(struct ixgbe_scattered_rx_entry) * len,
2489 RTE_CACHE_LINE_SIZE, socket_id);
2490 if (!rxq->sw_sc_ring) {
2491 ixgbe_rx_queue_release(rxq);
2495 PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p "
2496 "dma_addr=0x%"PRIx64,
2497 rxq->sw_ring, rxq->sw_sc_ring, rxq->rx_ring,
2498 rxq->rx_ring_phys_addr);
2500 if (!rte_is_power_of_2(nb_desc)) {
2501 PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Vector Rx "
2502 "preconditions - canceling the feature for "
2503 "the whole port[%d]",
2504 rxq->queue_id, rxq->port_id);
2505 adapter->rx_vec_allowed = false;
2507 ixgbe_rxq_vec_setup(rxq);
2509 dev->data->rx_queues[queue_idx] = rxq;
2511 ixgbe_reset_rx_queue(adapter, rxq);
2517 ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
2519 #define IXGBE_RXQ_SCAN_INTERVAL 4
2520 volatile union ixgbe_adv_rx_desc *rxdp;
2521 struct ixgbe_rx_queue *rxq;
2524 if (rx_queue_id >= dev->data->nb_rx_queues) {
2525 PMD_RX_LOG(ERR, "Invalid RX queue id=%d", rx_queue_id);
2529 rxq = dev->data->rx_queues[rx_queue_id];
2530 rxdp = &(rxq->rx_ring[rxq->rx_tail]);
2532 while ((desc < rxq->nb_rx_desc) &&
2533 (rxdp->wb.upper.status_error &
2534 rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD))) {
2535 desc += IXGBE_RXQ_SCAN_INTERVAL;
2536 rxdp += IXGBE_RXQ_SCAN_INTERVAL;
2537 if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
2538 rxdp = &(rxq->rx_ring[rxq->rx_tail +
2539 desc - rxq->nb_rx_desc]);
2546 ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
2548 volatile union ixgbe_adv_rx_desc *rxdp;
2549 struct ixgbe_rx_queue *rxq = rx_queue;
2552 if (unlikely(offset >= rxq->nb_rx_desc))
2554 desc = rxq->rx_tail + offset;
2555 if (desc >= rxq->nb_rx_desc)
2556 desc -= rxq->nb_rx_desc;
2558 rxdp = &rxq->rx_ring[desc];
2559 return !!(rxdp->wb.upper.status_error &
2560 rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD));
2563 void __attribute__((cold))
2564 ixgbe_dev_clear_queues(struct rte_eth_dev *dev)
2567 struct ixgbe_adapter *adapter =
2568 (struct ixgbe_adapter *)dev->data->dev_private;
2570 PMD_INIT_FUNC_TRACE();
2572 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2573 struct ixgbe_tx_queue *txq = dev->data->tx_queues[i];
2575 txq->ops->release_mbufs(txq);
2576 txq->ops->reset(txq);
2580 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2581 struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
2583 ixgbe_rx_queue_release_mbufs(rxq);
2584 ixgbe_reset_rx_queue(adapter, rxq);
2590 ixgbe_dev_free_queues(struct rte_eth_dev *dev)
2594 PMD_INIT_FUNC_TRACE();
2596 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2597 ixgbe_dev_rx_queue_release(dev->data->rx_queues[i]);
2598 dev->data->rx_queues[i] = NULL;
2600 dev->data->nb_rx_queues = 0;
2602 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2603 ixgbe_dev_tx_queue_release(dev->data->tx_queues[i]);
2604 dev->data->tx_queues[i] = NULL;
2606 dev->data->nb_tx_queues = 0;
2609 /*********************************************************************
2611 * Device RX/TX init functions
2613 **********************************************************************/
2616 * Receive Side Scaling (RSS)
2617 * See section 7.1.2.8 in the following document:
2618 * "Intel 82599 10 GbE Controller Datasheet" - Revision 2.1 October 2009
2621 * The source and destination IP addresses of the IP header and the source
2622 * and destination ports of TCP/UDP headers, if any, of received packets are
2623 * hashed against a configurable random key to compute a 32-bit RSS hash result.
2624 * The seven (7) LSBs of the 32-bit hash result are used as an index into a
2625 * 128-entry redirection table (RETA). Each entry of the RETA provides a 3-bit
2626 * RSS output index which is used as the RX queue index where to store the
2628 * The following output is supplied in the RX write-back descriptor:
2629 * - 32-bit result of the Microsoft RSS hash function,
2630 * - 4-bit RSS type field.
2634 * RSS random key supplied in section 7.1.2.8.3 of the Intel 82599 datasheet.
2635 * Used as the default key.
2637 static uint8_t rss_intel_key[40] = {
2638 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
2639 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
2640 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
2641 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
2642 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
2646 ixgbe_rss_disable(struct rte_eth_dev *dev)
2648 struct ixgbe_hw *hw;
2652 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2653 mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type);
2654 mrqc = IXGBE_READ_REG(hw, mrqc_reg);
2655 mrqc &= ~IXGBE_MRQC_RSSEN;
2656 IXGBE_WRITE_REG(hw, mrqc_reg, mrqc);
2660 ixgbe_hw_rss_hash_set(struct ixgbe_hw *hw, struct rte_eth_rss_conf *rss_conf)
2670 mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type);
2671 rssrk_reg = ixgbe_rssrk_reg_get(hw->mac.type, 0);
2673 hash_key = rss_conf->rss_key;
2674 if (hash_key != NULL) {
2675 /* Fill in RSS hash key */
2676 for (i = 0; i < 10; i++) {
2677 rss_key = hash_key[(i * 4)];
2678 rss_key |= hash_key[(i * 4) + 1] << 8;
2679 rss_key |= hash_key[(i * 4) + 2] << 16;
2680 rss_key |= hash_key[(i * 4) + 3] << 24;
2681 IXGBE_WRITE_REG_ARRAY(hw, rssrk_reg, i, rss_key);
2685 /* Set configured hashing protocols in MRQC register */
2686 rss_hf = rss_conf->rss_hf;
2687 mrqc = IXGBE_MRQC_RSSEN; /* Enable RSS */
2688 if (rss_hf & ETH_RSS_IPV4)
2689 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
2690 if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
2691 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
2692 if (rss_hf & ETH_RSS_IPV6)
2693 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
2694 if (rss_hf & ETH_RSS_IPV6_EX)
2695 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX;
2696 if (rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
2697 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2698 if (rss_hf & ETH_RSS_IPV6_TCP_EX)
2699 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP;
2700 if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
2701 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
2702 if (rss_hf & ETH_RSS_NONFRAG_IPV6_UDP)
2703 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
2704 if (rss_hf & ETH_RSS_IPV6_UDP_EX)
2705 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP;
2706 IXGBE_WRITE_REG(hw, mrqc_reg, mrqc);
2710 ixgbe_dev_rss_hash_update(struct rte_eth_dev *dev,
2711 struct rte_eth_rss_conf *rss_conf)
2713 struct ixgbe_hw *hw;
2718 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2720 if (!ixgbe_rss_update_sp(hw->mac.type)) {
2721 PMD_DRV_LOG(ERR, "RSS hash update is not supported on this "
2725 mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type);
2728 * Excerpt from section 7.1.2.8 Receive-Side Scaling (RSS):
2729 * "RSS enabling cannot be done dynamically while it must be
2730 * preceded by a software reset"
2731 * Before changing anything, first check that the update RSS operation
2732 * does not attempt to disable RSS, if RSS was enabled at
2733 * initialization time, or does not attempt to enable RSS, if RSS was
2734 * disabled at initialization time.
2736 rss_hf = rss_conf->rss_hf & IXGBE_RSS_OFFLOAD_ALL;
2737 mrqc = IXGBE_READ_REG(hw, mrqc_reg);
2738 if (!(mrqc & IXGBE_MRQC_RSSEN)) { /* RSS disabled */
2739 if (rss_hf != 0) /* Enable RSS */
2741 return 0; /* Nothing to do */
2744 if (rss_hf == 0) /* Disable RSS */
2746 ixgbe_hw_rss_hash_set(hw, rss_conf);
2751 ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
2752 struct rte_eth_rss_conf *rss_conf)
2754 struct ixgbe_hw *hw;
2763 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2764 mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type);
2765 rssrk_reg = ixgbe_rssrk_reg_get(hw->mac.type, 0);
2766 hash_key = rss_conf->rss_key;
2767 if (hash_key != NULL) {
2768 /* Return RSS hash key */
2769 for (i = 0; i < 10; i++) {
2770 rss_key = IXGBE_READ_REG_ARRAY(hw, rssrk_reg, i);
2771 hash_key[(i * 4)] = rss_key & 0x000000FF;
2772 hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
2773 hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
2774 hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
2778 /* Get RSS functions configured in MRQC register */
2779 mrqc = IXGBE_READ_REG(hw, mrqc_reg);
2780 if ((mrqc & IXGBE_MRQC_RSSEN) == 0) { /* RSS is disabled */
2781 rss_conf->rss_hf = 0;
2785 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4)
2786 rss_hf |= ETH_RSS_IPV4;
2787 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_TCP)
2788 rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
2789 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6)
2790 rss_hf |= ETH_RSS_IPV6;
2791 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX)
2792 rss_hf |= ETH_RSS_IPV6_EX;
2793 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_TCP)
2794 rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
2795 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP)
2796 rss_hf |= ETH_RSS_IPV6_TCP_EX;
2797 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_UDP)
2798 rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP;
2799 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_UDP)
2800 rss_hf |= ETH_RSS_NONFRAG_IPV6_UDP;
2801 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP)
2802 rss_hf |= ETH_RSS_IPV6_UDP_EX;
2803 rss_conf->rss_hf = rss_hf;
2808 ixgbe_rss_configure(struct rte_eth_dev *dev)
2810 struct rte_eth_rss_conf rss_conf;
2811 struct ixgbe_hw *hw;
2815 uint16_t sp_reta_size;
2818 PMD_INIT_FUNC_TRACE();
2819 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2821 sp_reta_size = ixgbe_reta_size_get(hw->mac.type);
2824 * Fill in redirection table
2825 * The byte-swap is needed because NIC registers are in
2826 * little-endian order.
2829 for (i = 0, j = 0; i < sp_reta_size; i++, j++) {
2830 reta_reg = ixgbe_reta_reg_get(hw->mac.type, i);
2832 if (j == dev->data->nb_rx_queues)
2834 reta = (reta << 8) | j;
2836 IXGBE_WRITE_REG(hw, reta_reg,
2841 * Configure the RSS key and the RSS protocols used to compute
2842 * the RSS hash of input packets.
2844 rss_conf = dev->data->dev_conf.rx_adv_conf.rss_conf;
2845 if ((rss_conf.rss_hf & IXGBE_RSS_OFFLOAD_ALL) == 0) {
2846 ixgbe_rss_disable(dev);
2849 if (rss_conf.rss_key == NULL)
2850 rss_conf.rss_key = rss_intel_key; /* Default hash key */
2851 ixgbe_hw_rss_hash_set(hw, &rss_conf);
2854 #define NUM_VFTA_REGISTERS 128
2855 #define NIC_RX_BUFFER_SIZE 0x200
2856 #define X550_RX_BUFFER_SIZE 0x180
2859 ixgbe_vmdq_dcb_configure(struct rte_eth_dev *dev)
2861 struct rte_eth_vmdq_dcb_conf *cfg;
2862 struct ixgbe_hw *hw;
2863 enum rte_eth_nb_pools num_pools;
2864 uint32_t mrqc, vt_ctl, queue_mapping, vlanctrl;
2866 uint8_t nb_tcs; /* number of traffic classes */
2869 PMD_INIT_FUNC_TRACE();
2870 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2871 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2872 num_pools = cfg->nb_queue_pools;
2873 /* Check we have a valid number of pools */
2874 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS) {
2875 ixgbe_rss_disable(dev);
2878 /* 16 pools -> 8 traffic classes, 32 pools -> 4 traffic classes */
2879 nb_tcs = (uint8_t)(ETH_VMDQ_DCB_NUM_QUEUES / (int)num_pools);
2883 * split rx buffer up into sections, each for 1 traffic class
2885 switch (hw->mac.type) {
2886 case ixgbe_mac_X550:
2887 case ixgbe_mac_X550EM_x:
2888 pbsize = (uint16_t)(X550_RX_BUFFER_SIZE / nb_tcs);
2891 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2894 for (i = 0 ; i < nb_tcs; i++) {
2895 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2896 rxpbsize &= (~(0x3FF << IXGBE_RXPBSIZE_SHIFT));
2897 /* clear 10 bits. */
2898 rxpbsize |= (pbsize << IXGBE_RXPBSIZE_SHIFT); /* set value */
2899 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2901 /* zero alloc all unused TCs */
2902 for (i = nb_tcs; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2903 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2904 rxpbsize &= (~( 0x3FF << IXGBE_RXPBSIZE_SHIFT ));
2905 /* clear 10 bits. */
2906 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2909 /* MRQC: enable vmdq and dcb */
2910 mrqc = ((num_pools == ETH_16_POOLS) ? \
2911 IXGBE_MRQC_VMDQRT8TCEN : IXGBE_MRQC_VMDQRT4TCEN );
2912 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2914 /* PFVTCTL: turn on virtualisation and set the default pool */
2915 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
2916 if (cfg->enable_default_pool) {
2917 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
2919 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
2922 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
2924 /* RTRUP2TC: mapping user priorities to traffic classes (TCs) */
2926 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++)
2928 * mapping is done with 3 bits per priority,
2929 * so shift by i*3 each time
2931 queue_mapping |= ((cfg->dcb_tc[i] & 0x07) << (i * 3));
2933 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, queue_mapping);
2935 /* RTRPCS: DCB related */
2936 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, IXGBE_RMCS_RRM);
2938 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2939 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2940 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2941 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2943 /* VFTA - enable all vlan filters */
2944 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2945 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2948 /* VFRE: pool enabling for receive - 16 or 32 */
2949 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), \
2950 num_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2953 * MPSAR - allow pools to read specific mac addresses
2954 * In this case, all pools should be able to read from mac addr 0
2956 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), 0xFFFFFFFF);
2957 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), 0xFFFFFFFF);
2959 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
2960 for (i = 0; i < cfg->nb_pool_maps; i++) {
2961 /* set vlan id in VF register and set the valid bit */
2962 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
2963 (cfg->pool_map[i].vlan_id & 0xFFF)));
2965 * Put the allowed pools in VFB reg. As we only have 16 or 32
2966 * pools, we only need to use the first half of the register
2969 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), cfg->pool_map[i].pools);
2974 * ixgbe_dcb_config_tx_hw_config - Configure general DCB TX parameters
2975 * @hw: pointer to hardware structure
2976 * @dcb_config: pointer to ixgbe_dcb_config structure
2979 ixgbe_dcb_tx_hw_config(struct ixgbe_hw *hw,
2980 struct ixgbe_dcb_config *dcb_config)
2985 PMD_INIT_FUNC_TRACE();
2986 if (hw->mac.type != ixgbe_mac_82598EB) {
2987 /* Disable the Tx desc arbiter so that MTQC can be changed */
2988 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2989 reg |= IXGBE_RTTDCS_ARBDIS;
2990 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
2992 /* Enable DCB for Tx with 8 TCs */
2993 if (dcb_config->num_tcs.pg_tcs == 8) {
2994 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
2997 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
2999 if (dcb_config->vt_mode)
3000 reg |= IXGBE_MTQC_VT_ENA;
3001 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
3003 /* Disable drop for all queues */
3004 for (q = 0; q < 128; q++)
3005 IXGBE_WRITE_REG(hw, IXGBE_QDE,
3006 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
3008 /* Enable the Tx desc arbiter */
3009 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3010 reg &= ~IXGBE_RTTDCS_ARBDIS;
3011 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3013 /* Enable Security TX Buffer IFG for DCB */
3014 reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
3015 reg |= IXGBE_SECTX_DCB;
3016 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
3022 * ixgbe_vmdq_dcb_hw_tx_config - Configure general VMDQ+DCB TX parameters
3023 * @dev: pointer to rte_eth_dev structure
3024 * @dcb_config: pointer to ixgbe_dcb_config structure
3027 ixgbe_vmdq_dcb_hw_tx_config(struct rte_eth_dev *dev,
3028 struct ixgbe_dcb_config *dcb_config)
3030 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
3031 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
3032 struct ixgbe_hw *hw =
3033 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3035 PMD_INIT_FUNC_TRACE();
3036 if (hw->mac.type != ixgbe_mac_82598EB)
3037 /*PF VF Transmit Enable*/
3038 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0),
3039 vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
3041 /*Configure general DCB TX parameters*/
3042 ixgbe_dcb_tx_hw_config(hw,dcb_config);
3047 ixgbe_vmdq_dcb_rx_config(struct rte_eth_dev *dev,
3048 struct ixgbe_dcb_config *dcb_config)
3050 struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
3051 &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
3052 struct ixgbe_dcb_tc_config *tc;
3055 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
3056 if (vmdq_rx_conf->nb_queue_pools == ETH_16_POOLS ) {
3057 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
3058 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
3061 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
3062 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
3064 /* User Priority to Traffic Class mapping */
3065 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3066 j = vmdq_rx_conf->dcb_tc[i];
3067 tc = &dcb_config->tc_config[j];
3068 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
3074 ixgbe_dcb_vt_tx_config(struct rte_eth_dev *dev,
3075 struct ixgbe_dcb_config *dcb_config)
3077 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
3078 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
3079 struct ixgbe_dcb_tc_config *tc;
3082 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
3083 if (vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ) {
3084 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
3085 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
3088 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
3089 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
3092 /* User Priority to Traffic Class mapping */
3093 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3094 j = vmdq_tx_conf->dcb_tc[i];
3095 tc = &dcb_config->tc_config[j];
3096 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
3103 ixgbe_dcb_rx_config(struct rte_eth_dev *dev,
3104 struct ixgbe_dcb_config *dcb_config)
3106 struct rte_eth_dcb_rx_conf *rx_conf =
3107 &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
3108 struct ixgbe_dcb_tc_config *tc;
3111 dcb_config->num_tcs.pg_tcs = (uint8_t)rx_conf->nb_tcs;
3112 dcb_config->num_tcs.pfc_tcs = (uint8_t)rx_conf->nb_tcs;
3114 /* User Priority to Traffic Class mapping */
3115 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3116 j = rx_conf->dcb_tc[i];
3117 tc = &dcb_config->tc_config[j];
3118 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
3124 ixgbe_dcb_tx_config(struct rte_eth_dev *dev,
3125 struct ixgbe_dcb_config *dcb_config)
3127 struct rte_eth_dcb_tx_conf *tx_conf =
3128 &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
3129 struct ixgbe_dcb_tc_config *tc;
3132 dcb_config->num_tcs.pg_tcs = (uint8_t)tx_conf->nb_tcs;
3133 dcb_config->num_tcs.pfc_tcs = (uint8_t)tx_conf->nb_tcs;
3135 /* User Priority to Traffic Class mapping */
3136 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3137 j = tx_conf->dcb_tc[i];
3138 tc = &dcb_config->tc_config[j];
3139 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
3145 * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters
3146 * @hw: pointer to hardware structure
3147 * @dcb_config: pointer to ixgbe_dcb_config structure
3150 ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
3151 struct ixgbe_dcb_config *dcb_config)
3157 PMD_INIT_FUNC_TRACE();
3159 * Disable the arbiter before changing parameters
3160 * (always enable recycle mode; WSP)
3162 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS;
3163 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
3165 if (hw->mac.type != ixgbe_mac_82598EB) {
3166 reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
3167 if (dcb_config->num_tcs.pg_tcs == 4) {
3168 if (dcb_config->vt_mode)
3169 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3170 IXGBE_MRQC_VMDQRT4TCEN;
3172 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
3173 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3177 if (dcb_config->num_tcs.pg_tcs == 8) {
3178 if (dcb_config->vt_mode)
3179 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3180 IXGBE_MRQC_VMDQRT8TCEN;
3182 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
3183 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3188 IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
3191 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
3192 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3193 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
3194 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
3196 /* VFTA - enable all vlan filters */
3197 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
3198 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
3202 * Configure Rx packet plane (recycle mode; WSP) and
3205 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC;
3206 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
3212 ixgbe_dcb_hw_arbite_rx_config(struct ixgbe_hw *hw, uint16_t *refill,
3213 uint16_t *max,uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
3215 switch (hw->mac.type) {
3216 case ixgbe_mac_82598EB:
3217 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
3219 case ixgbe_mac_82599EB:
3220 case ixgbe_mac_X540:
3221 case ixgbe_mac_X550:
3222 case ixgbe_mac_X550EM_x:
3223 ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id,
3232 ixgbe_dcb_hw_arbite_tx_config(struct ixgbe_hw *hw, uint16_t *refill, uint16_t *max,
3233 uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
3235 switch (hw->mac.type) {
3236 case ixgbe_mac_82598EB:
3237 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,tsa);
3238 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,tsa);
3240 case ixgbe_mac_82599EB:
3241 case ixgbe_mac_X540:
3242 case ixgbe_mac_X550:
3243 case ixgbe_mac_X550EM_x:
3244 ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,tsa);
3245 ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,tsa, map);
3252 #define DCB_RX_CONFIG 1
3253 #define DCB_TX_CONFIG 1
3254 #define DCB_TX_PB 1024
3256 * ixgbe_dcb_hw_configure - Enable DCB and configure
3257 * general DCB in VT mode and non-VT mode parameters
3258 * @dev: pointer to rte_eth_dev structure
3259 * @dcb_config: pointer to ixgbe_dcb_config structure
3262 ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
3263 struct ixgbe_dcb_config *dcb_config)
3266 uint8_t i,pfc_en,nb_tcs;
3267 uint16_t pbsize, rx_buffer_size;
3268 uint8_t config_dcb_rx = 0;
3269 uint8_t config_dcb_tx = 0;
3270 uint8_t tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3271 uint8_t bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3272 uint16_t refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3273 uint16_t max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3274 uint8_t map[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3275 struct ixgbe_dcb_tc_config *tc;
3276 uint32_t max_frame = dev->data->mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
3277 struct ixgbe_hw *hw =
3278 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3280 switch(dev->data->dev_conf.rxmode.mq_mode){
3281 case ETH_MQ_RX_VMDQ_DCB:
3282 dcb_config->vt_mode = true;
3283 if (hw->mac.type != ixgbe_mac_82598EB) {
3284 config_dcb_rx = DCB_RX_CONFIG;
3286 *get dcb and VT rx configuration parameters
3289 ixgbe_vmdq_dcb_rx_config(dev,dcb_config);
3290 /*Configure general VMDQ and DCB RX parameters*/
3291 ixgbe_vmdq_dcb_configure(dev);
3295 dcb_config->vt_mode = false;
3296 config_dcb_rx = DCB_RX_CONFIG;
3297 /* Get dcb TX configuration parameters from rte_eth_conf */
3298 ixgbe_dcb_rx_config(dev,dcb_config);
3299 /*Configure general DCB RX parameters*/
3300 ixgbe_dcb_rx_hw_config(hw, dcb_config);
3303 PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration");
3306 switch (dev->data->dev_conf.txmode.mq_mode) {
3307 case ETH_MQ_TX_VMDQ_DCB:
3308 dcb_config->vt_mode = true;
3309 config_dcb_tx = DCB_TX_CONFIG;
3310 /* get DCB and VT TX configuration parameters from rte_eth_conf */
3311 ixgbe_dcb_vt_tx_config(dev,dcb_config);
3312 /*Configure general VMDQ and DCB TX parameters*/
3313 ixgbe_vmdq_dcb_hw_tx_config(dev,dcb_config);
3317 dcb_config->vt_mode = false;
3318 config_dcb_tx = DCB_TX_CONFIG;
3319 /*get DCB TX configuration parameters from rte_eth_conf*/
3320 ixgbe_dcb_tx_config(dev,dcb_config);
3321 /*Configure general DCB TX parameters*/
3322 ixgbe_dcb_tx_hw_config(hw, dcb_config);
3325 PMD_INIT_LOG(ERR, "Incorrect DCB TX mode configuration");
3329 nb_tcs = dcb_config->num_tcs.pfc_tcs;
3331 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_RX_CONFIG, map);
3332 if(nb_tcs == ETH_4_TCS) {
3333 /* Avoid un-configured priority mapping to TC0 */
3335 uint8_t mask = 0xFF;
3336 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES - 4; i++)
3337 mask = (uint8_t)(mask & (~ (1 << map[i])));
3338 for (i = 0; mask && (i < IXGBE_DCB_MAX_TRAFFIC_CLASS); i++) {
3339 if ((mask & 0x1) && (j < ETH_DCB_NUM_USER_PRIORITIES))
3343 /* Re-configure 4 TCs BW */
3344 for (i = 0; i < nb_tcs; i++) {
3345 tc = &dcb_config->tc_config[i];
3346 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
3347 (uint8_t)(100 / nb_tcs);
3348 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
3349 (uint8_t)(100 / nb_tcs);
3351 for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
3352 tc = &dcb_config->tc_config[i];
3353 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0;
3354 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0;
3358 switch (hw->mac.type) {
3359 case ixgbe_mac_X550:
3360 case ixgbe_mac_X550EM_x:
3361 rx_buffer_size = X550_RX_BUFFER_SIZE;
3364 rx_buffer_size = NIC_RX_BUFFER_SIZE;
3369 /* Set RX buffer size */
3370 pbsize = (uint16_t)(rx_buffer_size / nb_tcs);
3371 uint32_t rxpbsize = pbsize << IXGBE_RXPBSIZE_SHIFT;
3372 for (i = 0 ; i < nb_tcs; i++) {
3373 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
3375 /* zero alloc all unused TCs */
3376 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3377 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3381 /* Only support an equally distributed Tx packet buffer strategy. */
3382 uint32_t txpktsize = IXGBE_TXPBSIZE_MAX / nb_tcs;
3383 uint32_t txpbthresh = (txpktsize / DCB_TX_PB) - IXGBE_TXPKT_SIZE_MAX;
3384 for (i = 0; i < nb_tcs; i++) {
3385 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3386 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3388 /* Clear unused TCs, if any, to zero buffer size*/
3389 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3390 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3391 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3395 /*Calculates traffic class credits*/
3396 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
3397 IXGBE_DCB_TX_CONFIG);
3398 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
3399 IXGBE_DCB_RX_CONFIG);
3402 /* Unpack CEE standard containers */
3403 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_RX_CONFIG, refill);
3404 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3405 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_RX_CONFIG, bwgid);
3406 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_RX_CONFIG, tsa);
3407 /* Configure PG(ETS) RX */
3408 ixgbe_dcb_hw_arbite_rx_config(hw,refill,max,bwgid,tsa,map);
3412 /* Unpack CEE standard containers */
3413 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
3414 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3415 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
3416 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
3417 /* Configure PG(ETS) TX */
3418 ixgbe_dcb_hw_arbite_tx_config(hw,refill,max,bwgid,tsa,map);
3421 /*Configure queue statistics registers*/
3422 ixgbe_dcb_config_tc_stats_82599(hw, dcb_config);
3424 /* Check if the PFC is supported */
3425 if(dev->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) {
3426 pbsize = (uint16_t)(rx_buffer_size / nb_tcs);
3427 for (i = 0; i < nb_tcs; i++) {
3429 * If the TC count is 8,and the default high_water is 48,
3430 * the low_water is 16 as default.
3432 hw->fc.high_water[i] = (pbsize * 3 ) / 4;
3433 hw->fc.low_water[i] = pbsize / 4;
3434 /* Enable pfc for this TC */
3435 tc = &dcb_config->tc_config[i];
3436 tc->pfc = ixgbe_dcb_pfc_enabled;
3438 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
3439 if(dcb_config->num_tcs.pfc_tcs == ETH_4_TCS)
3441 ret = ixgbe_dcb_config_pfc(hw, pfc_en, map);
3448 * ixgbe_configure_dcb - Configure DCB Hardware
3449 * @dev: pointer to rte_eth_dev
3451 void ixgbe_configure_dcb(struct rte_eth_dev *dev)
3453 struct ixgbe_dcb_config *dcb_cfg =
3454 IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
3455 struct rte_eth_conf *dev_conf = &(dev->data->dev_conf);
3457 PMD_INIT_FUNC_TRACE();
3459 /* check support mq_mode for DCB */
3460 if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) &&
3461 (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB))
3464 if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES)
3467 /** Configure DCB hardware **/
3468 ixgbe_dcb_hw_configure(dev,dcb_cfg);
3474 * VMDq only support for 10 GbE NIC.
3477 ixgbe_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
3479 struct rte_eth_vmdq_rx_conf *cfg;
3480 struct ixgbe_hw *hw;
3481 enum rte_eth_nb_pools num_pools;
3482 uint32_t mrqc, vt_ctl, vlanctrl;
3486 PMD_INIT_FUNC_TRACE();
3487 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3488 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
3489 num_pools = cfg->nb_queue_pools;
3491 ixgbe_rss_disable(dev);
3493 /* MRQC: enable vmdq */
3494 mrqc = IXGBE_MRQC_VMDQEN;
3495 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3497 /* PFVTCTL: turn on virtualisation and set the default pool */
3498 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
3499 if (cfg->enable_default_pool)
3500 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
3502 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
3504 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
3506 for (i = 0; i < (int)num_pools; i++) {
3507 vmolr = ixgbe_convert_vm_rx_mask_to_val(cfg->rx_mode, vmolr);
3508 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
3511 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
3512 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3513 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
3514 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
3516 /* VFTA - enable all vlan filters */
3517 for (i = 0; i < NUM_VFTA_REGISTERS; i++)
3518 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), UINT32_MAX);
3520 /* VFRE: pool enabling for receive - 64 */
3521 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), UINT32_MAX);
3522 if (num_pools == ETH_64_POOLS)
3523 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), UINT32_MAX);
3526 * MPSAR - allow pools to read specific mac addresses
3527 * In this case, all pools should be able to read from mac addr 0
3529 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), UINT32_MAX);
3530 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), UINT32_MAX);
3532 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
3533 for (i = 0; i < cfg->nb_pool_maps; i++) {
3534 /* set vlan id in VF register and set the valid bit */
3535 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
3536 (cfg->pool_map[i].vlan_id & IXGBE_RXD_VLAN_ID_MASK)));
3538 * Put the allowed pools in VFB reg. As we only have 16 or 64
3539 * pools, we only need to use the first half of the register
3542 if (((cfg->pool_map[i].pools >> 32) & UINT32_MAX) == 0)
3543 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), \
3544 (cfg->pool_map[i].pools & UINT32_MAX));
3546 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((i*2+1)), \
3547 ((cfg->pool_map[i].pools >> 32) \
3552 /* PFDMA Tx General Switch Control Enables VMDQ loopback */
3553 if (cfg->enable_loop_back) {
3554 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
3555 for (i = 0; i < RTE_IXGBE_VMTXSW_REGISTER_COUNT; i++)
3556 IXGBE_WRITE_REG(hw, IXGBE_VMTXSW(i), UINT32_MAX);
3559 IXGBE_WRITE_FLUSH(hw);
3563 * ixgbe_dcb_config_tx_hw_config - Configure general VMDq TX parameters
3564 * @hw: pointer to hardware structure
3567 ixgbe_vmdq_tx_hw_configure(struct ixgbe_hw *hw)
3572 PMD_INIT_FUNC_TRACE();
3573 /*PF VF Transmit Enable*/
3574 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), UINT32_MAX);
3575 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), UINT32_MAX);
3577 /* Disable the Tx desc arbiter so that MTQC can be changed */
3578 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3579 reg |= IXGBE_RTTDCS_ARBDIS;
3580 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3582 reg = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3583 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
3585 /* Disable drop for all queues */
3586 for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++)
3587 IXGBE_WRITE_REG(hw, IXGBE_QDE,
3588 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
3590 /* Enable the Tx desc arbiter */
3591 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3592 reg &= ~IXGBE_RTTDCS_ARBDIS;
3593 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3595 IXGBE_WRITE_FLUSH(hw);
3600 static int __attribute__((cold))
3601 ixgbe_alloc_rx_queue_mbufs(struct ixgbe_rx_queue *rxq)
3603 struct ixgbe_rx_entry *rxe = rxq->sw_ring;
3607 /* Initialize software ring entries */
3608 for (i = 0; i < rxq->nb_rx_desc; i++) {
3609 volatile union ixgbe_adv_rx_desc *rxd;
3610 struct rte_mbuf *mbuf = rte_rxmbuf_alloc(rxq->mb_pool);
3612 PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
3613 (unsigned) rxq->queue_id);
3617 rte_mbuf_refcnt_set(mbuf, 1);
3619 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
3621 mbuf->port = rxq->port_id;
3624 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
3625 rxd = &rxq->rx_ring[i];
3626 rxd->read.hdr_addr = 0;
3627 rxd->read.pkt_addr = dma_addr;
3635 ixgbe_config_vf_rss(struct rte_eth_dev *dev)
3637 struct ixgbe_hw *hw;
3640 ixgbe_rss_configure(dev);
3642 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3644 /* MRQC: enable VF RSS */
3645 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
3646 mrqc &= ~IXGBE_MRQC_MRQE_MASK;
3647 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3649 mrqc |= IXGBE_MRQC_VMDQRSS64EN;
3653 mrqc |= IXGBE_MRQC_VMDQRSS32EN;
3657 PMD_INIT_LOG(ERR, "Invalid pool number in IOV mode with VMDQ RSS");
3661 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3667 ixgbe_config_vf_default(struct rte_eth_dev *dev)
3669 struct ixgbe_hw *hw =
3670 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3672 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3674 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3679 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3680 IXGBE_MRQC_VMDQRT4TCEN);
3684 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3685 IXGBE_MRQC_VMDQRT8TCEN);
3689 "invalid pool number in IOV mode");
3696 ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
3698 struct ixgbe_hw *hw =
3699 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3701 if (hw->mac.type == ixgbe_mac_82598EB)
3704 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3706 * SRIOV inactive scheme
3707 * any DCB/RSS w/o VMDq multi-queue setting
3709 switch (dev->data->dev_conf.rxmode.mq_mode) {
3711 ixgbe_rss_configure(dev);
3714 case ETH_MQ_RX_VMDQ_DCB:
3715 ixgbe_vmdq_dcb_configure(dev);
3718 case ETH_MQ_RX_VMDQ_ONLY:
3719 ixgbe_vmdq_rx_hw_configure(dev);
3722 case ETH_MQ_RX_NONE:
3723 /* if mq_mode is none, disable rss mode.*/
3724 default: ixgbe_rss_disable(dev);
3728 * SRIOV active scheme
3729 * Support RSS together with VMDq & SRIOV
3731 switch (dev->data->dev_conf.rxmode.mq_mode) {
3733 case ETH_MQ_RX_VMDQ_RSS:
3734 ixgbe_config_vf_rss(dev);
3737 /* FIXME if support DCB/RSS together with VMDq & SRIOV */
3738 case ETH_MQ_RX_VMDQ_DCB:
3739 case ETH_MQ_RX_VMDQ_DCB_RSS:
3741 "Could not support DCB with VMDq & SRIOV");
3744 ixgbe_config_vf_default(dev);
3753 ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev)
3755 struct ixgbe_hw *hw =
3756 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3760 if (hw->mac.type == ixgbe_mac_82598EB)
3763 /* disable arbiter before setting MTQC */
3764 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3765 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3766 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3768 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3770 * SRIOV inactive scheme
3771 * any DCB w/o VMDq multi-queue setting
3773 if (dev->data->dev_conf.txmode.mq_mode == ETH_MQ_TX_VMDQ_ONLY)
3774 ixgbe_vmdq_tx_hw_configure(hw);
3776 mtqc = IXGBE_MTQC_64Q_1PB;
3777 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3780 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3783 * SRIOV active scheme
3784 * FIXME if support DCB together with VMDq & SRIOV
3787 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3790 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_32VF;
3793 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_RT_ENA |
3797 mtqc = IXGBE_MTQC_64Q_1PB;
3798 PMD_INIT_LOG(ERR, "invalid pool number in IOV mode");
3800 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3803 /* re-enable arbiter */
3804 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3805 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3811 * ixgbe_get_rscctl_maxdesc - Calculate the RSCCTL[n].MAXDESC for PF
3813 * Return the RSCCTL[n].MAXDESC for 82599 and x540 PF devices according to the
3814 * spec rev. 3.0 chapter 8.2.3.8.13.
3816 * @pool Memory pool of the Rx queue
3818 static inline uint32_t
3819 ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
3821 struct rte_pktmbuf_pool_private *mp_priv = rte_mempool_get_priv(pool);
3823 /* MAXDESC * SRRCTL.BSIZEPKT must not exceed 64 KB minus one */
3826 (mp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM);
3829 return IXGBE_RSCCTL_MAXDESC_16;
3830 else if (maxdesc >= 8)
3831 return IXGBE_RSCCTL_MAXDESC_8;
3832 else if (maxdesc >= 4)
3833 return IXGBE_RSCCTL_MAXDESC_4;
3835 return IXGBE_RSCCTL_MAXDESC_1;
3839 * ixgbe_set_ivar - Setup the correct IVAR register for a particular MSIX
3842 * (Taken from FreeBSD tree)
3843 * (yes this is all very magic and confusing :)
3846 * @entry the register array entry
3847 * @vector the MSIX vector for this queue
3851 ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type)
3853 struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3856 vector |= IXGBE_IVAR_ALLOC_VAL;
3858 switch (hw->mac.type) {
3860 case ixgbe_mac_82598EB:
3862 entry = IXGBE_IVAR_OTHER_CAUSES_INDEX;
3864 entry += (type * 64);
3865 index = (entry >> 2) & 0x1F;
3866 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
3867 ivar &= ~(0xFF << (8 * (entry & 0x3)));
3868 ivar |= (vector << (8 * (entry & 0x3)));
3869 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
3872 case ixgbe_mac_82599EB:
3873 case ixgbe_mac_X540:
3874 if (type == -1) { /* MISC IVAR */
3875 index = (entry & 1) * 8;
3876 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR_MISC);
3877 ivar &= ~(0xFF << index);
3878 ivar |= (vector << index);
3879 IXGBE_WRITE_REG(hw, IXGBE_IVAR_MISC, ivar);
3880 } else { /* RX/TX IVARS */
3881 index = (16 * (entry & 1)) + (8 * type);
3882 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(entry >> 1));
3883 ivar &= ~(0xFF << index);
3884 ivar |= (vector << index);
3885 IXGBE_WRITE_REG(hw, IXGBE_IVAR(entry >> 1), ivar);
3895 void __attribute__((cold))
3896 ixgbe_set_rx_function(struct rte_eth_dev *dev)
3898 uint16_t i, rx_using_sse;
3899 struct ixgbe_adapter *adapter =
3900 (struct ixgbe_adapter *)dev->data->dev_private;
3903 * In order to allow Vector Rx there are a few configuration
3904 * conditions to be met and Rx Bulk Allocation should be allowed.
3906 if (ixgbe_rx_vec_dev_conf_condition_check(dev) ||
3907 !adapter->rx_bulk_alloc_allowed) {
3908 PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet Vector Rx "
3909 "preconditions or RTE_IXGBE_INC_VECTOR is "
3911 dev->data->port_id);
3913 adapter->rx_vec_allowed = false;
3917 * Initialize the appropriate LRO callback.
3919 * If all queues satisfy the bulk allocation preconditions
3920 * (hw->rx_bulk_alloc_allowed is TRUE) then we may use bulk allocation.
3921 * Otherwise use a single allocation version.
3923 if (dev->data->lro) {
3924 if (adapter->rx_bulk_alloc_allowed) {
3925 PMD_INIT_LOG(DEBUG, "LRO is requested. Using a bulk "
3926 "allocation version");
3927 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
3929 PMD_INIT_LOG(DEBUG, "LRO is requested. Using a single "
3930 "allocation version");
3931 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
3933 } else if (dev->data->scattered_rx) {
3935 * Set the non-LRO scattered callback: there are Vector and
3936 * single allocation versions.
3938 if (adapter->rx_vec_allowed) {
3939 PMD_INIT_LOG(DEBUG, "Using Vector Scattered Rx "
3940 "callback (port=%d).",
3941 dev->data->port_id);
3943 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3944 } else if (adapter->rx_bulk_alloc_allowed) {
3945 PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
3946 "allocation callback (port=%d).",
3947 dev->data->port_id);
3948 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
3950 PMD_INIT_LOG(DEBUG, "Using Regualr (non-vector, "
3951 "single allocation) "
3952 "Scattered Rx callback "
3954 dev->data->port_id);
3956 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
3959 * Below we set "simple" callbacks according to port/queues parameters.
3960 * If parameters allow we are going to choose between the following
3964 * - Single buffer allocation (the simplest one)
3966 } else if (adapter->rx_vec_allowed) {
3967 PMD_INIT_LOG(DEBUG, "Vector rx enabled, please make sure RX "
3968 "burst size no less than %d (port=%d).",
3969 RTE_IXGBE_DESCS_PER_LOOP,
3970 dev->data->port_id);
3972 dev->rx_pkt_burst = ixgbe_recv_pkts_vec;
3973 } else if (adapter->rx_bulk_alloc_allowed) {
3974 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
3975 "satisfied. Rx Burst Bulk Alloc function "
3976 "will be used on port=%d.",
3977 dev->data->port_id);
3979 dev->rx_pkt_burst = ixgbe_recv_pkts_bulk_alloc;
3981 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not "
3982 "satisfied, or Scattered Rx is requested "
3984 dev->data->port_id);
3986 dev->rx_pkt_burst = ixgbe_recv_pkts;
3989 /* Propagate information about RX function choice through all queues. */
3992 (dev->rx_pkt_burst == ixgbe_recv_scattered_pkts_vec ||
3993 dev->rx_pkt_burst == ixgbe_recv_pkts_vec);
3995 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3996 struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
3997 rxq->rx_using_sse = rx_using_sse;
4002 * ixgbe_set_rsc - configure RSC related port HW registers
4004 * Configures the port's RSC related registers according to the 4.6.7.2 chapter
4005 * of 82599 Spec (x540 configuration is virtually the same).
4009 * Returns 0 in case of success or a non-zero error code
4012 ixgbe_set_rsc(struct rte_eth_dev *dev)
4014 struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
4015 struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4016 struct rte_eth_dev_info dev_info = { 0 };
4017 bool rsc_capable = false;
4022 dev->dev_ops->dev_infos_get(dev, &dev_info);
4023 if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)
4026 if (!rsc_capable && rx_conf->enable_lro) {
4027 PMD_INIT_LOG(CRIT, "LRO is requested on HW that doesn't "
4032 /* RSC global configuration (chapter 4.6.7.2.1 of 82599 Spec) */
4034 if (!rx_conf->hw_strip_crc && rx_conf->enable_lro) {
4036 * According to chapter of 4.6.7.2.1 of the Spec Rev.
4037 * 3.0 RSC configuration requires HW CRC stripping being
4038 * enabled. If user requested both HW CRC stripping off
4039 * and RSC on - return an error.
4041 PMD_INIT_LOG(CRIT, "LRO can't be enabled when HW CRC "
4046 /* RFCTL configuration */
4048 uint32_t rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
4049 if (rx_conf->enable_lro)
4051 * Since NFS packets coalescing is not supported - clear
4052 * RFCTL.NFSW_DIS and RFCTL.NFSR_DIS when RSC is
4055 rfctl &= ~(IXGBE_RFCTL_RSC_DIS | IXGBE_RFCTL_NFSW_DIS |
4056 IXGBE_RFCTL_NFSR_DIS);
4058 rfctl |= IXGBE_RFCTL_RSC_DIS;
4060 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
4063 /* If LRO hasn't been requested - we are done here. */
4064 if (!rx_conf->enable_lro)
4067 /* Set RDRXCTL.RSCACKC bit */
4068 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
4069 rdrxctl |= IXGBE_RDRXCTL_RSCACKC;
4070 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
4072 /* Per-queue RSC configuration (chapter 4.6.7.2.2 of 82599 Spec) */
4073 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4074 struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
4076 IXGBE_READ_REG(hw, IXGBE_SRRCTL(rxq->reg_idx));
4078 IXGBE_READ_REG(hw, IXGBE_RSCCTL(rxq->reg_idx));
4080 IXGBE_READ_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx));
4082 IXGBE_READ_REG(hw, IXGBE_EITR(rxq->reg_idx));
4085 * ixgbe PMD doesn't support header-split at the moment.
4087 * Following the 4.6.7.2.1 chapter of the 82599/x540
4088 * Spec if RSC is enabled the SRRCTL[n].BSIZEHEADER
4089 * should be configured even if header split is not
4090 * enabled. We will configure it 128 bytes following the
4091 * recommendation in the spec.
4093 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
4094 srrctl |= (128 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4095 IXGBE_SRRCTL_BSIZEHDR_MASK;
4098 * TODO: Consider setting the Receive Descriptor Minimum
4099 * Threshold Size for an RSC case. This is not an obviously
4100 * beneficiary option but the one worth considering...
4103 rscctl |= IXGBE_RSCCTL_RSCEN;
4104 rscctl |= ixgbe_get_rscctl_maxdesc(rxq->mb_pool);
4105 psrtype |= IXGBE_PSRTYPE_TCPHDR;
4108 * RSC: Set ITR interval corresponding to 2K ints/s.
4110 * Full-sized RSC aggregations for a 10Gb/s link will
4111 * arrive at about 20K aggregation/s rate.
4113 * 2K inst/s rate will make only 10% of the
4114 * aggregations to be closed due to the interrupt timer
4115 * expiration for a streaming at wire-speed case.
4117 * For a sparse streaming case this setting will yield
4118 * at most 500us latency for a single RSC aggregation.
4120 eitr &= ~IXGBE_EITR_ITR_INT_MASK;
4121 eitr |= IXGBE_EITR_INTERVAL_US(500) | IXGBE_EITR_CNT_WDIS;
4123 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
4124 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(rxq->reg_idx), rscctl);
4125 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
4126 IXGBE_WRITE_REG(hw, IXGBE_EITR(rxq->reg_idx), eitr);
4129 * RSC requires the mapping of the queue to the
4132 ixgbe_set_ivar(dev, rxq->reg_idx, i, 0);
4137 PMD_INIT_LOG(DEBUG, "enabling LRO mode");
4143 * Initializes Receive Unit.
4145 int __attribute__((cold))
4146 ixgbe_dev_rx_init(struct rte_eth_dev *dev)
4148 struct ixgbe_hw *hw;
4149 struct ixgbe_rx_queue *rxq;
4160 struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
4163 PMD_INIT_FUNC_TRACE();
4164 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4167 * Make sure receives are disabled while setting
4168 * up the RX context (registers, descriptor rings, etc.).
4170 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4171 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
4173 /* Enable receipt of broadcasted frames */
4174 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4175 fctrl |= IXGBE_FCTRL_BAM;
4176 fctrl |= IXGBE_FCTRL_DPF;
4177 fctrl |= IXGBE_FCTRL_PMCF;
4178 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
4181 * Configure CRC stripping, if any.
4183 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
4184 if (rx_conf->hw_strip_crc)
4185 hlreg0 |= IXGBE_HLREG0_RXCRCSTRP;
4187 hlreg0 &= ~IXGBE_HLREG0_RXCRCSTRP;
4190 * Configure jumbo frame support, if any.
4192 if (rx_conf->jumbo_frame == 1) {
4193 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
4194 maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
4195 maxfrs &= 0x0000FFFF;
4196 maxfrs |= (rx_conf->max_rx_pkt_len << 16);
4197 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
4199 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
4202 * If loopback mode is configured for 82599, set LPBK bit.
4204 if (hw->mac.type == ixgbe_mac_82599EB &&
4205 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
4206 hlreg0 |= IXGBE_HLREG0_LPBK;
4208 hlreg0 &= ~IXGBE_HLREG0_LPBK;
4210 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
4212 /* Setup RX queues */
4213 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4214 rxq = dev->data->rx_queues[i];
4217 * Reset crc_len in case it was changed after queue setup by a
4218 * call to configure.
4220 rxq->crc_len = rx_conf->hw_strip_crc ? 0 : ETHER_CRC_LEN;
4222 /* Setup the Base and Length of the Rx Descriptor Rings */
4223 bus_addr = rxq->rx_ring_phys_addr;
4224 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(rxq->reg_idx),
4225 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4226 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(rxq->reg_idx),
4227 (uint32_t)(bus_addr >> 32));
4228 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(rxq->reg_idx),
4229 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
4230 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
4231 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), 0);
4233 /* Configure the SRRCTL register */
4234 #ifdef RTE_HEADER_SPLIT_ENABLE
4236 * Configure Header Split
4238 if (rx_conf->header_split) {
4239 if (hw->mac.type == ixgbe_mac_82599EB) {
4240 /* Must setup the PSRTYPE register */
4242 psrtype = IXGBE_PSRTYPE_TCPHDR |
4243 IXGBE_PSRTYPE_UDPHDR |
4244 IXGBE_PSRTYPE_IPV4HDR |
4245 IXGBE_PSRTYPE_IPV6HDR;
4246 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
4248 srrctl = ((rx_conf->split_hdr_size <<
4249 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4250 IXGBE_SRRCTL_BSIZEHDR_MASK);
4251 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
4254 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
4256 /* Set if packets are dropped when no descriptors available */
4258 srrctl |= IXGBE_SRRCTL_DROP_EN;
4261 * Configure the RX buffer size in the BSIZEPACKET field of
4262 * the SRRCTL register of the queue.
4263 * The value is in 1 KB resolution. Valid values can be from
4266 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
4267 RTE_PKTMBUF_HEADROOM);
4268 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
4269 IXGBE_SRRCTL_BSIZEPKT_MASK);
4271 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
4273 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
4274 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
4276 /* It adds dual VLAN length for supporting dual VLAN */
4277 if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
4278 2 * IXGBE_VLAN_TAG_SIZE > buf_size)
4279 dev->data->scattered_rx = 1;
4282 if (rx_conf->enable_scatter)
4283 dev->data->scattered_rx = 1;
4286 * Device configured with multiple RX queues.
4288 ixgbe_dev_mq_rx_configure(dev);
4291 * Setup the Checksum Register.
4292 * Disable Full-Packet Checksum which is mutually exclusive with RSS.
4293 * Enable IP/L4 checkum computation by hardware if requested to do so.
4295 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
4296 rxcsum |= IXGBE_RXCSUM_PCSD;
4297 if (rx_conf->hw_ip_checksum)
4298 rxcsum |= IXGBE_RXCSUM_IPPCSE;
4300 rxcsum &= ~IXGBE_RXCSUM_IPPCSE;
4302 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
4304 if (hw->mac.type == ixgbe_mac_82599EB ||
4305 hw->mac.type == ixgbe_mac_X540) {
4306 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
4307 if (rx_conf->hw_strip_crc)
4308 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
4310 rdrxctl &= ~IXGBE_RDRXCTL_CRCSTRIP;
4311 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
4312 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
4315 rc = ixgbe_set_rsc(dev);
4319 ixgbe_set_rx_function(dev);
4325 * Initializes Transmit Unit.
4327 void __attribute__((cold))
4328 ixgbe_dev_tx_init(struct rte_eth_dev *dev)
4330 struct ixgbe_hw *hw;
4331 struct ixgbe_tx_queue *txq;
4337 PMD_INIT_FUNC_TRACE();
4338 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4340 /* Enable TX CRC (checksum offload requirement) and hw padding
4341 * (TSO requirement) */
4342 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
4343 hlreg0 |= (IXGBE_HLREG0_TXCRCEN | IXGBE_HLREG0_TXPADEN);
4344 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
4346 /* Setup the Base and Length of the Tx Descriptor Rings */
4347 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4348 txq = dev->data->tx_queues[i];
4350 bus_addr = txq->tx_ring_phys_addr;
4351 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(txq->reg_idx),
4352 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4353 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(txq->reg_idx),
4354 (uint32_t)(bus_addr >> 32));
4355 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(txq->reg_idx),
4356 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
4357 /* Setup the HW Tx Head and TX Tail descriptor pointers */
4358 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
4359 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
4362 * Disable Tx Head Writeback RO bit, since this hoses
4363 * bookkeeping if things aren't delivered in order.
4365 switch (hw->mac.type) {
4366 case ixgbe_mac_82598EB:
4367 txctrl = IXGBE_READ_REG(hw,
4368 IXGBE_DCA_TXCTRL(txq->reg_idx));
4369 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4370 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(txq->reg_idx),
4374 case ixgbe_mac_82599EB:
4375 case ixgbe_mac_X540:
4376 case ixgbe_mac_X550:
4377 case ixgbe_mac_X550EM_x:
4379 txctrl = IXGBE_READ_REG(hw,
4380 IXGBE_DCA_TXCTRL_82599(txq->reg_idx));
4381 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4382 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(txq->reg_idx),
4388 /* Device configured with multiple TX queues. */
4389 ixgbe_dev_mq_tx_configure(dev);
4393 * Set up link for 82599 loopback mode Tx->Rx.
4395 static inline void __attribute__((cold))
4396 ixgbe_setup_loopback_link_82599(struct ixgbe_hw *hw)
4398 PMD_INIT_FUNC_TRACE();
4400 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
4401 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM) !=
4403 PMD_INIT_LOG(ERR, "Could not enable loopback mode");
4412 IXGBE_AUTOC_LMS_10G_LINK_NO_AN | IXGBE_AUTOC_FLU);
4413 ixgbe_reset_pipeline_82599(hw);
4415 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
4421 * Start Transmit and Receive Units.
4423 int __attribute__((cold))
4424 ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
4426 struct ixgbe_hw *hw;
4427 struct ixgbe_tx_queue *txq;
4428 struct ixgbe_rx_queue *rxq;
4435 PMD_INIT_FUNC_TRACE();
4436 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4438 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4439 txq = dev->data->tx_queues[i];
4440 /* Setup Transmit Threshold Registers */
4441 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4442 txdctl |= txq->pthresh & 0x7F;
4443 txdctl |= ((txq->hthresh & 0x7F) << 8);
4444 txdctl |= ((txq->wthresh & 0x7F) << 16);
4445 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4448 if (hw->mac.type != ixgbe_mac_82598EB) {
4449 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
4450 dmatxctl |= IXGBE_DMATXCTL_TE;
4451 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
4454 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4455 txq = dev->data->tx_queues[i];
4456 if (!txq->tx_deferred_start) {
4457 ret = ixgbe_dev_tx_queue_start(dev, i);
4463 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4464 rxq = dev->data->rx_queues[i];
4465 if (!rxq->rx_deferred_start) {
4466 ret = ixgbe_dev_rx_queue_start(dev, i);
4472 /* Enable Receive engine */
4473 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4474 if (hw->mac.type == ixgbe_mac_82598EB)
4475 rxctrl |= IXGBE_RXCTRL_DMBYPS;
4476 rxctrl |= IXGBE_RXCTRL_RXEN;
4477 hw->mac.ops.enable_rx_dma(hw, rxctrl);
4479 /* If loopback mode is enabled for 82599, set up the link accordingly */
4480 if (hw->mac.type == ixgbe_mac_82599EB &&
4481 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
4482 ixgbe_setup_loopback_link_82599(hw);
4488 * Start Receive Units for specified queue.
4490 int __attribute__((cold))
4491 ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
4493 struct ixgbe_hw *hw;
4494 struct ixgbe_rx_queue *rxq;
4498 PMD_INIT_FUNC_TRACE();
4499 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4501 if (rx_queue_id < dev->data->nb_rx_queues) {
4502 rxq = dev->data->rx_queues[rx_queue_id];
4504 /* Allocate buffers for descriptor rings */
4505 if (ixgbe_alloc_rx_queue_mbufs(rxq) != 0) {
4506 PMD_INIT_LOG(ERR, "Could not alloc mbuf for queue:%d",
4510 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4511 rxdctl |= IXGBE_RXDCTL_ENABLE;
4512 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
4514 /* Wait until RX Enable ready */
4515 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4518 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4519 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4521 PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d",
4524 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
4525 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1);
4533 * Stop Receive Units for specified queue.
4535 int __attribute__((cold))
4536 ixgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
4538 struct ixgbe_hw *hw;
4539 struct ixgbe_adapter *adapter =
4540 (struct ixgbe_adapter *)dev->data->dev_private;
4541 struct ixgbe_rx_queue *rxq;
4545 PMD_INIT_FUNC_TRACE();
4546 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4548 if (rx_queue_id < dev->data->nb_rx_queues) {
4549 rxq = dev->data->rx_queues[rx_queue_id];
4551 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4552 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
4553 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
4555 /* Wait until RX Enable ready */
4556 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4559 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4560 } while (--poll_ms && (rxdctl | IXGBE_RXDCTL_ENABLE));
4562 PMD_INIT_LOG(ERR, "Could not disable Rx Queue %d",
4565 rte_delay_us(RTE_IXGBE_WAIT_100_US);
4567 ixgbe_rx_queue_release_mbufs(rxq);
4568 ixgbe_reset_rx_queue(adapter, rxq);
4577 * Start Transmit Units for specified queue.
4579 int __attribute__((cold))
4580 ixgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
4582 struct ixgbe_hw *hw;
4583 struct ixgbe_tx_queue *txq;
4587 PMD_INIT_FUNC_TRACE();
4588 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4590 if (tx_queue_id < dev->data->nb_tx_queues) {
4591 txq = dev->data->tx_queues[tx_queue_id];
4592 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4593 txdctl |= IXGBE_TXDCTL_ENABLE;
4594 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4596 /* Wait until TX Enable ready */
4597 if (hw->mac.type == ixgbe_mac_82599EB) {
4598 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4601 txdctl = IXGBE_READ_REG(hw,
4602 IXGBE_TXDCTL(txq->reg_idx));
4603 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
4605 PMD_INIT_LOG(ERR, "Could not enable "
4606 "Tx Queue %d", tx_queue_id);
4609 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
4610 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
4618 * Stop Transmit Units for specified queue.
4620 int __attribute__((cold))
4621 ixgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
4623 struct ixgbe_hw *hw;
4624 struct ixgbe_tx_queue *txq;
4626 uint32_t txtdh, txtdt;
4629 PMD_INIT_FUNC_TRACE();
4630 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4632 if (tx_queue_id < dev->data->nb_tx_queues) {
4633 txq = dev->data->tx_queues[tx_queue_id];
4635 /* Wait until TX queue is empty */
4636 if (hw->mac.type == ixgbe_mac_82599EB) {
4637 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4639 rte_delay_us(RTE_IXGBE_WAIT_100_US);
4640 txtdh = IXGBE_READ_REG(hw,
4641 IXGBE_TDH(txq->reg_idx));
4642 txtdt = IXGBE_READ_REG(hw,
4643 IXGBE_TDT(txq->reg_idx));
4644 } while (--poll_ms && (txtdh != txtdt));
4646 PMD_INIT_LOG(ERR, "Tx Queue %d is not empty "
4647 "when stopping.", tx_queue_id);
4650 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4651 txdctl &= ~IXGBE_TXDCTL_ENABLE;
4652 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4654 /* Wait until TX Enable ready */
4655 if (hw->mac.type == ixgbe_mac_82599EB) {
4656 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4659 txdctl = IXGBE_READ_REG(hw,
4660 IXGBE_TXDCTL(txq->reg_idx));
4661 } while (--poll_ms && (txdctl | IXGBE_TXDCTL_ENABLE));
4663 PMD_INIT_LOG(ERR, "Could not disable "
4664 "Tx Queue %d", tx_queue_id);
4667 if (txq->ops != NULL) {
4668 txq->ops->release_mbufs(txq);
4669 txq->ops->reset(txq);
4678 * [VF] Initializes Receive Unit.
4680 int __attribute__((cold))
4681 ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
4683 struct ixgbe_hw *hw;
4684 struct ixgbe_rx_queue *rxq;
4686 uint32_t srrctl, psrtype = 0;
4691 PMD_INIT_FUNC_TRACE();
4692 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4694 if (rte_is_power_of_2(dev->data->nb_rx_queues) == 0) {
4695 PMD_INIT_LOG(ERR, "The number of Rx queue invalid, "
4696 "it should be power of 2");
4700 if (dev->data->nb_rx_queues > hw->mac.max_rx_queues) {
4701 PMD_INIT_LOG(ERR, "The number of Rx queue invalid, "
4702 "it should be equal to or less than %d",
4703 hw->mac.max_rx_queues);
4708 * When the VF driver issues a IXGBE_VF_RESET request, the PF driver
4709 * disables the VF receipt of packets if the PF MTU is > 1500.
4710 * This is done to deal with 82599 limitations that imposes
4711 * the PF and all VFs to share the same MTU.
4712 * Then, the PF driver enables again the VF receipt of packet when
4713 * the VF driver issues a IXGBE_VF_SET_LPE request.
4714 * In the meantime, the VF device cannot be used, even if the VF driver
4715 * and the Guest VM network stack are ready to accept packets with a
4716 * size up to the PF MTU.
4717 * As a work-around to this PF behaviour, force the call to
4718 * ixgbevf_rlpml_set_vf even if jumbo frames are not used. This way,
4719 * VF packets received can work in all cases.
4721 ixgbevf_rlpml_set_vf(hw,
4722 (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len);
4724 /* Setup RX queues */
4725 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4726 rxq = dev->data->rx_queues[i];
4728 /* Allocate buffers for descriptor rings */
4729 ret = ixgbe_alloc_rx_queue_mbufs(rxq);
4733 /* Setup the Base and Length of the Rx Descriptor Rings */
4734 bus_addr = rxq->rx_ring_phys_addr;
4736 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i),
4737 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4738 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i),
4739 (uint32_t)(bus_addr >> 32));
4740 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i),
4741 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
4742 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
4743 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
4746 /* Configure the SRRCTL register */
4747 #ifdef RTE_HEADER_SPLIT_ENABLE
4749 * Configure Header Split
4751 if (dev->data->dev_conf.rxmode.header_split) {
4752 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
4753 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4754 IXGBE_SRRCTL_BSIZEHDR_MASK);
4755 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
4758 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
4760 /* Set if packets are dropped when no descriptors available */
4762 srrctl |= IXGBE_SRRCTL_DROP_EN;
4765 * Configure the RX buffer size in the BSIZEPACKET field of
4766 * the SRRCTL register of the queue.
4767 * The value is in 1 KB resolution. Valid values can be from
4770 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
4771 RTE_PKTMBUF_HEADROOM);
4772 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
4773 IXGBE_SRRCTL_BSIZEPKT_MASK);
4776 * VF modification to write virtual function SRRCTL register
4778 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), srrctl);
4780 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
4781 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
4783 if (dev->data->dev_conf.rxmode.enable_scatter ||
4784 /* It adds dual VLAN length for supporting dual VLAN */
4785 (dev->data->dev_conf.rxmode.max_rx_pkt_len +
4786 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
4787 if (!dev->data->scattered_rx)
4788 PMD_INIT_LOG(DEBUG, "forcing scatter mode");
4789 dev->data->scattered_rx = 1;
4793 #ifdef RTE_HEADER_SPLIT_ENABLE
4794 if (dev->data->dev_conf.rxmode.header_split)
4795 /* Must setup the PSRTYPE register */
4796 psrtype = IXGBE_PSRTYPE_TCPHDR |
4797 IXGBE_PSRTYPE_UDPHDR |
4798 IXGBE_PSRTYPE_IPV4HDR |
4799 IXGBE_PSRTYPE_IPV6HDR;
4802 /* Set RQPL for VF RSS according to max Rx queue */
4803 psrtype |= (dev->data->nb_rx_queues >> 1) <<
4804 IXGBE_PSRTYPE_RQPL_SHIFT;
4805 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
4807 ixgbe_set_rx_function(dev);
4813 * [VF] Initializes Transmit Unit.
4815 void __attribute__((cold))
4816 ixgbevf_dev_tx_init(struct rte_eth_dev *dev)
4818 struct ixgbe_hw *hw;
4819 struct ixgbe_tx_queue *txq;
4824 PMD_INIT_FUNC_TRACE();
4825 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4827 /* Setup the Base and Length of the Tx Descriptor Rings */
4828 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4829 txq = dev->data->tx_queues[i];
4830 bus_addr = txq->tx_ring_phys_addr;
4831 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i),
4832 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4833 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i),
4834 (uint32_t)(bus_addr >> 32));
4835 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i),
4836 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
4837 /* Setup the HW Tx Head and TX Tail descriptor pointers */
4838 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
4839 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
4842 * Disable Tx Head Writeback RO bit, since this hoses
4843 * bookkeeping if things aren't delivered in order.
4845 txctrl = IXGBE_READ_REG(hw,
4846 IXGBE_VFDCA_TXCTRL(i));
4847 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4848 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i),
4854 * [VF] Start Transmit and Receive Units.
4856 void __attribute__((cold))
4857 ixgbevf_dev_rxtx_start(struct rte_eth_dev *dev)
4859 struct ixgbe_hw *hw;
4860 struct ixgbe_tx_queue *txq;
4861 struct ixgbe_rx_queue *rxq;
4867 PMD_INIT_FUNC_TRACE();
4868 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4870 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4871 txq = dev->data->tx_queues[i];
4872 /* Setup Transmit Threshold Registers */
4873 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4874 txdctl |= txq->pthresh & 0x7F;
4875 txdctl |= ((txq->hthresh & 0x7F) << 8);
4876 txdctl |= ((txq->wthresh & 0x7F) << 16);
4877 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4880 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4882 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4883 txdctl |= IXGBE_TXDCTL_ENABLE;
4884 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4887 /* Wait until TX Enable ready */
4890 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4891 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
4893 PMD_INIT_LOG(ERR, "Could not enable Tx Queue %d", i);
4895 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4897 rxq = dev->data->rx_queues[i];
4899 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4900 rxdctl |= IXGBE_RXDCTL_ENABLE;
4901 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl);
4903 /* Wait until RX Enable ready */
4907 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4908 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4910 PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d", i);
4912 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), rxq->nb_rx_desc - 1);
4917 /* Stubs needed for linkage when CONFIG_RTE_IXGBE_INC_VECTOR is set to 'n' */
4918 int __attribute__((weak))
4919 ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
4924 uint16_t __attribute__((weak))
4925 ixgbe_recv_pkts_vec(
4926 void __rte_unused *rx_queue,
4927 struct rte_mbuf __rte_unused **rx_pkts,
4928 uint16_t __rte_unused nb_pkts)
4933 uint16_t __attribute__((weak))
4934 ixgbe_recv_scattered_pkts_vec(
4935 void __rte_unused *rx_queue,
4936 struct rte_mbuf __rte_unused **rx_pkts,
4937 uint16_t __rte_unused nb_pkts)
4942 int __attribute__((weak))
4943 ixgbe_rxq_vec_setup(struct ixgbe_rx_queue __rte_unused *rxq)