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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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 & 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 = buf_dma_addr;
179 txdp->read.cmd_type_len =
180 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
181 txdp->read.olinfo_status =
182 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
183 rte_prefetch0(&(*pkts)->pool);
187 /* Populate 1 descriptor with data from 1 mbuf */
189 tx1(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
191 uint64_t buf_dma_addr;
194 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
195 pkt_len = (*pkts)->data_len;
197 /* write data to descriptor */
198 txdp->read.buffer_addr = buf_dma_addr;
199 txdp->read.cmd_type_len =
200 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
201 txdp->read.olinfo_status =
202 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
203 rte_prefetch0(&(*pkts)->pool);
207 * Fill H/W descriptor ring with mbuf data.
208 * Copy mbuf pointers to the S/W ring.
211 ixgbe_tx_fill_hw_ring(struct ixgbe_tx_queue *txq, struct rte_mbuf **pkts,
214 volatile union ixgbe_adv_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]);
215 struct ixgbe_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]);
216 const int N_PER_LOOP = 4;
217 const int N_PER_LOOP_MASK = N_PER_LOOP-1;
218 int mainpart, leftover;
222 * Process most of the packets in chunks of N pkts. Any
223 * leftover packets will get processed one at a time.
225 mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK));
226 leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK));
227 for (i = 0; i < mainpart; i += N_PER_LOOP) {
228 /* Copy N mbuf pointers to the S/W ring */
229 for (j = 0; j < N_PER_LOOP; ++j) {
230 (txep + i + j)->mbuf = *(pkts + i + j);
232 tx4(txdp + i, pkts + i);
235 if (unlikely(leftover > 0)) {
236 for (i = 0; i < leftover; ++i) {
237 (txep + mainpart + i)->mbuf = *(pkts + mainpart + i);
238 tx1(txdp + mainpart + i, pkts + mainpart + i);
243 static inline uint16_t
244 tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
247 struct ixgbe_tx_queue *txq = (struct ixgbe_tx_queue *)tx_queue;
248 volatile union ixgbe_adv_tx_desc *tx_r = txq->tx_ring;
252 * Begin scanning the H/W ring for done descriptors when the
253 * number of available descriptors drops below tx_free_thresh. For
254 * each done descriptor, free the associated buffer.
256 if (txq->nb_tx_free < txq->tx_free_thresh)
257 ixgbe_tx_free_bufs(txq);
259 /* Only use descriptors that are available */
260 nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
261 if (unlikely(nb_pkts == 0))
264 /* Use exactly nb_pkts descriptors */
265 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
268 * At this point, we know there are enough descriptors in the
269 * ring to transmit all the packets. This assumes that each
270 * mbuf contains a single segment, and that no new offloads
271 * are expected, which would require a new context descriptor.
275 * See if we're going to wrap-around. If so, handle the top
276 * of the descriptor ring first, then do the bottom. If not,
277 * the processing looks just like the "bottom" part anyway...
279 if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) {
280 n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail);
281 ixgbe_tx_fill_hw_ring(txq, tx_pkts, n);
284 * We know that the last descriptor in the ring will need to
285 * have its RS bit set because tx_rs_thresh has to be
286 * a divisor of the ring size
288 tx_r[txq->tx_next_rs].read.cmd_type_len |=
289 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
290 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
295 /* Fill H/W descriptor ring with mbuf data */
296 ixgbe_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n));
297 txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n));
300 * Determine if RS bit should be set
301 * This is what we actually want:
302 * if ((txq->tx_tail - 1) >= txq->tx_next_rs)
303 * but instead of subtracting 1 and doing >=, we can just do
304 * greater than without subtracting.
306 if (txq->tx_tail > txq->tx_next_rs) {
307 tx_r[txq->tx_next_rs].read.cmd_type_len |=
308 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
309 txq->tx_next_rs = (uint16_t)(txq->tx_next_rs +
311 if (txq->tx_next_rs >= txq->nb_tx_desc)
312 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
316 * Check for wrap-around. This would only happen if we used
317 * up to the last descriptor in the ring, no more, no less.
319 if (txq->tx_tail >= txq->nb_tx_desc)
322 /* update tail pointer */
324 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
330 ixgbe_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts,
335 /* Try to transmit at least chunks of TX_MAX_BURST pkts */
336 if (likely(nb_pkts <= RTE_PMD_IXGBE_TX_MAX_BURST))
337 return tx_xmit_pkts(tx_queue, tx_pkts, nb_pkts);
339 /* transmit more than the max burst, in chunks of TX_MAX_BURST */
343 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_TX_MAX_BURST);
344 ret = tx_xmit_pkts(tx_queue, &(tx_pkts[nb_tx]), n);
345 nb_tx = (uint16_t)(nb_tx + ret);
346 nb_pkts = (uint16_t)(nb_pkts - ret);
355 ixgbe_set_xmit_ctx(struct ixgbe_tx_queue *txq,
356 volatile struct ixgbe_adv_tx_context_desc *ctx_txd,
357 uint64_t ol_flags, union ixgbe_tx_offload tx_offload)
359 uint32_t type_tucmd_mlhl;
360 uint32_t mss_l4len_idx = 0;
362 uint32_t vlan_macip_lens;
363 union ixgbe_tx_offload tx_offload_mask;
365 ctx_idx = txq->ctx_curr;
366 tx_offload_mask.data = 0;
369 /* Specify which HW CTX to upload. */
370 mss_l4len_idx |= (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT);
372 if (ol_flags & PKT_TX_VLAN_PKT) {
373 tx_offload_mask.vlan_tci |= ~0;
376 /* check if TCP segmentation required for this packet */
377 if (ol_flags & PKT_TX_TCP_SEG) {
378 /* implies IP cksum in IPv4 */
379 if (ol_flags & PKT_TX_IP_CKSUM)
380 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4 |
381 IXGBE_ADVTXD_TUCMD_L4T_TCP |
382 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
384 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV6 |
385 IXGBE_ADVTXD_TUCMD_L4T_TCP |
386 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
388 tx_offload_mask.l2_len |= ~0;
389 tx_offload_mask.l3_len |= ~0;
390 tx_offload_mask.l4_len |= ~0;
391 tx_offload_mask.tso_segsz |= ~0;
392 mss_l4len_idx |= tx_offload.tso_segsz << IXGBE_ADVTXD_MSS_SHIFT;
393 mss_l4len_idx |= tx_offload.l4_len << IXGBE_ADVTXD_L4LEN_SHIFT;
394 } else { /* no TSO, check if hardware checksum is needed */
395 if (ol_flags & PKT_TX_IP_CKSUM) {
396 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4;
397 tx_offload_mask.l2_len |= ~0;
398 tx_offload_mask.l3_len |= ~0;
401 switch (ol_flags & PKT_TX_L4_MASK) {
402 case PKT_TX_UDP_CKSUM:
403 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP |
404 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
405 mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
406 tx_offload_mask.l2_len |= ~0;
407 tx_offload_mask.l3_len |= ~0;
409 case PKT_TX_TCP_CKSUM:
410 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP |
411 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
412 mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
413 tx_offload_mask.l2_len |= ~0;
414 tx_offload_mask.l3_len |= ~0;
415 tx_offload_mask.l4_len |= ~0;
417 case PKT_TX_SCTP_CKSUM:
418 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP |
419 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
420 mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
421 tx_offload_mask.l2_len |= ~0;
422 tx_offload_mask.l3_len |= ~0;
425 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV |
426 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
431 txq->ctx_cache[ctx_idx].flags = ol_flags;
432 txq->ctx_cache[ctx_idx].tx_offload.data =
433 tx_offload_mask.data & tx_offload.data;
434 txq->ctx_cache[ctx_idx].tx_offload_mask = tx_offload_mask;
436 ctx_txd->type_tucmd_mlhl = rte_cpu_to_le_32(type_tucmd_mlhl);
437 vlan_macip_lens = tx_offload.l3_len;
438 vlan_macip_lens |= (tx_offload.l2_len << IXGBE_ADVTXD_MACLEN_SHIFT);
439 vlan_macip_lens |= ((uint32_t)tx_offload.vlan_tci << IXGBE_ADVTXD_VLAN_SHIFT);
440 ctx_txd->vlan_macip_lens = rte_cpu_to_le_32(vlan_macip_lens);
441 ctx_txd->mss_l4len_idx = rte_cpu_to_le_32(mss_l4len_idx);
442 ctx_txd->seqnum_seed = 0;
446 * Check which hardware context can be used. Use the existing match
447 * or create a new context descriptor.
449 static inline uint32_t
450 what_advctx_update(struct ixgbe_tx_queue *txq, uint64_t flags,
451 union ixgbe_tx_offload tx_offload)
453 /* If match with the current used context */
454 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
455 (txq->ctx_cache[txq->ctx_curr].tx_offload.data ==
456 (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data & tx_offload.data)))) {
457 return txq->ctx_curr;
460 /* What if match with the next context */
462 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
463 (txq->ctx_cache[txq->ctx_curr].tx_offload.data ==
464 (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data & tx_offload.data)))) {
465 return txq->ctx_curr;
468 /* Mismatch, use the previous context */
469 return (IXGBE_CTX_NUM);
472 static inline uint32_t
473 tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags)
476 if ((ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM)
477 tmp |= IXGBE_ADVTXD_POPTS_TXSM;
478 if (ol_flags & PKT_TX_IP_CKSUM)
479 tmp |= IXGBE_ADVTXD_POPTS_IXSM;
480 if (ol_flags & PKT_TX_TCP_SEG)
481 tmp |= IXGBE_ADVTXD_POPTS_TXSM;
485 static inline uint32_t
486 tx_desc_ol_flags_to_cmdtype(uint64_t ol_flags)
488 uint32_t cmdtype = 0;
489 if (ol_flags & PKT_TX_VLAN_PKT)
490 cmdtype |= IXGBE_ADVTXD_DCMD_VLE;
491 if (ol_flags & PKT_TX_TCP_SEG)
492 cmdtype |= IXGBE_ADVTXD_DCMD_TSE;
496 /* Default RS bit threshold values */
497 #ifndef DEFAULT_TX_RS_THRESH
498 #define DEFAULT_TX_RS_THRESH 32
500 #ifndef DEFAULT_TX_FREE_THRESH
501 #define DEFAULT_TX_FREE_THRESH 32
504 /* Reset transmit descriptors after they have been used */
506 ixgbe_xmit_cleanup(struct ixgbe_tx_queue *txq)
508 struct ixgbe_tx_entry *sw_ring = txq->sw_ring;
509 volatile union ixgbe_adv_tx_desc *txr = txq->tx_ring;
510 uint16_t last_desc_cleaned = txq->last_desc_cleaned;
511 uint16_t nb_tx_desc = txq->nb_tx_desc;
512 uint16_t desc_to_clean_to;
513 uint16_t nb_tx_to_clean;
515 /* Determine the last descriptor needing to be cleaned */
516 desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
517 if (desc_to_clean_to >= nb_tx_desc)
518 desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
520 /* Check to make sure the last descriptor to clean is done */
521 desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
522 if (! (txr[desc_to_clean_to].wb.status & IXGBE_TXD_STAT_DD))
524 PMD_TX_FREE_LOG(DEBUG,
525 "TX descriptor %4u is not done"
526 "(port=%d queue=%d)",
528 txq->port_id, txq->queue_id);
529 /* Failed to clean any descriptors, better luck next time */
533 /* Figure out how many descriptors will be cleaned */
534 if (last_desc_cleaned > desc_to_clean_to)
535 nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
538 nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
541 PMD_TX_FREE_LOG(DEBUG,
542 "Cleaning %4u TX descriptors: %4u to %4u "
543 "(port=%d queue=%d)",
544 nb_tx_to_clean, last_desc_cleaned, desc_to_clean_to,
545 txq->port_id, txq->queue_id);
548 * The last descriptor to clean is done, so that means all the
549 * descriptors from the last descriptor that was cleaned
550 * up to the last descriptor with the RS bit set
551 * are done. Only reset the threshold descriptor.
553 txr[desc_to_clean_to].wb.status = 0;
555 /* Update the txq to reflect the last descriptor that was cleaned */
556 txq->last_desc_cleaned = desc_to_clean_to;
557 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
564 ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
567 struct ixgbe_tx_queue *txq;
568 struct ixgbe_tx_entry *sw_ring;
569 struct ixgbe_tx_entry *txe, *txn;
570 volatile union ixgbe_adv_tx_desc *txr;
571 volatile union ixgbe_adv_tx_desc *txd;
572 struct rte_mbuf *tx_pkt;
573 struct rte_mbuf *m_seg;
574 uint64_t buf_dma_addr;
575 uint32_t olinfo_status;
576 uint32_t cmd_type_len;
587 union ixgbe_tx_offload tx_offload = {0};
590 sw_ring = txq->sw_ring;
592 tx_id = txq->tx_tail;
593 txe = &sw_ring[tx_id];
595 /* Determine if the descriptor ring needs to be cleaned. */
596 if (txq->nb_tx_free < txq->tx_free_thresh)
597 ixgbe_xmit_cleanup(txq);
599 rte_prefetch0(&txe->mbuf->pool);
602 for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
605 pkt_len = tx_pkt->pkt_len;
608 * Determine how many (if any) context descriptors
609 * are needed for offload functionality.
611 ol_flags = tx_pkt->ol_flags;
613 /* If hardware offload required */
614 tx_ol_req = ol_flags & IXGBE_TX_OFFLOAD_MASK;
616 tx_offload.l2_len = tx_pkt->l2_len;
617 tx_offload.l3_len = tx_pkt->l3_len;
618 tx_offload.l4_len = tx_pkt->l4_len;
619 tx_offload.vlan_tci = tx_pkt->vlan_tci;
620 tx_offload.tso_segsz = tx_pkt->tso_segsz;
622 /* If new context need be built or reuse the exist ctx. */
623 ctx = what_advctx_update(txq, tx_ol_req,
625 /* Only allocate context descriptor if required*/
626 new_ctx = (ctx == IXGBE_CTX_NUM);
631 * Keep track of how many descriptors are used this loop
632 * This will always be the number of segments + the number of
633 * Context descriptors required to transmit the packet
635 nb_used = (uint16_t)(tx_pkt->nb_segs + new_ctx);
638 * The number of descriptors that must be allocated for a
639 * packet is the number of segments of that packet, plus 1
640 * Context Descriptor for the hardware offload, if any.
641 * Determine the last TX descriptor to allocate in the TX ring
642 * for the packet, starting from the current position (tx_id)
645 tx_last = (uint16_t) (tx_id + nb_used - 1);
648 if (tx_last >= txq->nb_tx_desc)
649 tx_last = (uint16_t) (tx_last - txq->nb_tx_desc);
651 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u pktlen=%u"
652 " tx_first=%u tx_last=%u",
653 (unsigned) txq->port_id,
654 (unsigned) txq->queue_id,
660 * Make sure there are enough TX descriptors available to
661 * transmit the entire packet.
662 * nb_used better be less than or equal to txq->tx_rs_thresh
664 if (nb_used > txq->nb_tx_free) {
665 PMD_TX_FREE_LOG(DEBUG,
666 "Not enough free TX descriptors "
667 "nb_used=%4u nb_free=%4u "
668 "(port=%d queue=%d)",
669 nb_used, txq->nb_tx_free,
670 txq->port_id, txq->queue_id);
672 if (ixgbe_xmit_cleanup(txq) != 0) {
673 /* Could not clean any descriptors */
679 /* nb_used better be <= txq->tx_rs_thresh */
680 if (unlikely(nb_used > txq->tx_rs_thresh)) {
681 PMD_TX_FREE_LOG(DEBUG,
682 "The number of descriptors needed to "
683 "transmit the packet exceeds the "
684 "RS bit threshold. This will impact "
686 "nb_used=%4u nb_free=%4u "
688 "(port=%d queue=%d)",
689 nb_used, txq->nb_tx_free,
691 txq->port_id, txq->queue_id);
693 * Loop here until there are enough TX
694 * descriptors or until the ring cannot be
697 while (nb_used > txq->nb_tx_free) {
698 if (ixgbe_xmit_cleanup(txq) != 0) {
700 * Could not clean any
712 * By now there are enough free TX descriptors to transmit
717 * Set common flags of all TX Data Descriptors.
719 * The following bits must be set in all Data Descriptors:
720 * - IXGBE_ADVTXD_DTYP_DATA
721 * - IXGBE_ADVTXD_DCMD_DEXT
723 * The following bits must be set in the first Data Descriptor
724 * and are ignored in the other ones:
725 * - IXGBE_ADVTXD_DCMD_IFCS
726 * - IXGBE_ADVTXD_MAC_1588
727 * - IXGBE_ADVTXD_DCMD_VLE
729 * The following bits must only be set in the last Data
731 * - IXGBE_TXD_CMD_EOP
733 * The following bits can be set in any Data Descriptor, but
734 * are only set in the last Data Descriptor:
737 cmd_type_len = IXGBE_ADVTXD_DTYP_DATA |
738 IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
740 #ifdef RTE_LIBRTE_IEEE1588
741 if (ol_flags & PKT_TX_IEEE1588_TMST)
742 cmd_type_len |= IXGBE_ADVTXD_MAC_1588;
748 if (ol_flags & PKT_TX_TCP_SEG) {
749 /* when TSO is on, paylen in descriptor is the
750 * not the packet len but the tcp payload len */
751 pkt_len -= (tx_offload.l2_len +
752 tx_offload.l3_len + tx_offload.l4_len);
756 * Setup the TX Advanced Context Descriptor if required
759 volatile struct ixgbe_adv_tx_context_desc *
762 ctx_txd = (volatile struct
763 ixgbe_adv_tx_context_desc *)
766 txn = &sw_ring[txe->next_id];
767 rte_prefetch0(&txn->mbuf->pool);
769 if (txe->mbuf != NULL) {
770 rte_pktmbuf_free_seg(txe->mbuf);
774 ixgbe_set_xmit_ctx(txq, ctx_txd, tx_ol_req,
777 txe->last_id = tx_last;
778 tx_id = txe->next_id;
783 * Setup the TX Advanced Data Descriptor,
784 * This path will go through
785 * whatever new/reuse the context descriptor
787 cmd_type_len |= tx_desc_ol_flags_to_cmdtype(ol_flags);
788 olinfo_status |= tx_desc_cksum_flags_to_olinfo(ol_flags);
789 olinfo_status |= ctx << IXGBE_ADVTXD_IDX_SHIFT;
792 olinfo_status |= (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
797 txn = &sw_ring[txe->next_id];
798 rte_prefetch0(&txn->mbuf->pool);
800 if (txe->mbuf != NULL)
801 rte_pktmbuf_free_seg(txe->mbuf);
805 * Set up Transmit Data Descriptor.
807 slen = m_seg->data_len;
808 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(m_seg);
809 txd->read.buffer_addr =
810 rte_cpu_to_le_64(buf_dma_addr);
811 txd->read.cmd_type_len =
812 rte_cpu_to_le_32(cmd_type_len | slen);
813 txd->read.olinfo_status =
814 rte_cpu_to_le_32(olinfo_status);
815 txe->last_id = tx_last;
816 tx_id = txe->next_id;
819 } while (m_seg != NULL);
822 * The last packet data descriptor needs End Of Packet (EOP)
824 cmd_type_len |= IXGBE_TXD_CMD_EOP;
825 txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
826 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
828 /* Set RS bit only on threshold packets' last descriptor */
829 if (txq->nb_tx_used >= txq->tx_rs_thresh) {
830 PMD_TX_FREE_LOG(DEBUG,
831 "Setting RS bit on TXD id="
832 "%4u (port=%d queue=%d)",
833 tx_last, txq->port_id, txq->queue_id);
835 cmd_type_len |= IXGBE_TXD_CMD_RS;
837 /* Update txq RS bit counters */
840 txd->read.cmd_type_len |= rte_cpu_to_le_32(cmd_type_len);
846 * Set the Transmit Descriptor Tail (TDT)
848 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
849 (unsigned) txq->port_id, (unsigned) txq->queue_id,
850 (unsigned) tx_id, (unsigned) nb_tx);
851 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
852 txq->tx_tail = tx_id;
857 /*********************************************************************
861 **********************************************************************/
863 #define IXGBE_PACKET_TYPE_IPV4 0X01
864 #define IXGBE_PACKET_TYPE_IPV4_TCP 0X11
865 #define IXGBE_PACKET_TYPE_IPV4_UDP 0X21
866 #define IXGBE_PACKET_TYPE_IPV4_SCTP 0X41
867 #define IXGBE_PACKET_TYPE_IPV4_EXT 0X03
868 #define IXGBE_PACKET_TYPE_IPV4_EXT_SCTP 0X43
869 #define IXGBE_PACKET_TYPE_IPV6 0X04
870 #define IXGBE_PACKET_TYPE_IPV6_TCP 0X14
871 #define IXGBE_PACKET_TYPE_IPV6_UDP 0X24
872 #define IXGBE_PACKET_TYPE_IPV6_EXT 0X0C
873 #define IXGBE_PACKET_TYPE_IPV6_EXT_TCP 0X1C
874 #define IXGBE_PACKET_TYPE_IPV6_EXT_UDP 0X2C
875 #define IXGBE_PACKET_TYPE_IPV4_IPV6 0X05
876 #define IXGBE_PACKET_TYPE_IPV4_IPV6_TCP 0X15
877 #define IXGBE_PACKET_TYPE_IPV4_IPV6_UDP 0X25
878 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT 0X0D
879 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP 0X1D
880 #define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP 0X2D
881 #define IXGBE_PACKET_TYPE_MAX 0X80
882 #define IXGBE_PACKET_TYPE_MASK 0X7F
883 #define IXGBE_PACKET_TYPE_SHIFT 0X04
884 static inline uint32_t
885 ixgbe_rxd_pkt_info_to_pkt_type(uint16_t pkt_info)
887 static const uint32_t
888 ptype_table[IXGBE_PACKET_TYPE_MAX] __rte_cache_aligned = {
889 [IXGBE_PACKET_TYPE_IPV4] = RTE_PTYPE_L2_ETHER |
891 [IXGBE_PACKET_TYPE_IPV4_EXT] = RTE_PTYPE_L2_ETHER |
892 RTE_PTYPE_L3_IPV4_EXT,
893 [IXGBE_PACKET_TYPE_IPV6] = RTE_PTYPE_L2_ETHER |
895 [IXGBE_PACKET_TYPE_IPV4_IPV6] = RTE_PTYPE_L2_ETHER |
896 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
897 RTE_PTYPE_INNER_L3_IPV6,
898 [IXGBE_PACKET_TYPE_IPV6_EXT] = RTE_PTYPE_L2_ETHER |
899 RTE_PTYPE_L3_IPV6_EXT,
900 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT] = RTE_PTYPE_L2_ETHER |
901 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
902 RTE_PTYPE_INNER_L3_IPV6_EXT,
903 [IXGBE_PACKET_TYPE_IPV4_TCP] = RTE_PTYPE_L2_ETHER |
904 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP,
905 [IXGBE_PACKET_TYPE_IPV6_TCP] = RTE_PTYPE_L2_ETHER |
906 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP,
907 [IXGBE_PACKET_TYPE_IPV4_IPV6_TCP] = RTE_PTYPE_L2_ETHER |
908 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
909 RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_TCP,
910 [IXGBE_PACKET_TYPE_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER |
911 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP,
912 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER |
913 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
914 RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_TCP,
915 [IXGBE_PACKET_TYPE_IPV4_UDP] = RTE_PTYPE_L2_ETHER |
916 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP,
917 [IXGBE_PACKET_TYPE_IPV6_UDP] = RTE_PTYPE_L2_ETHER |
918 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP,
919 [IXGBE_PACKET_TYPE_IPV4_IPV6_UDP] = RTE_PTYPE_L2_ETHER |
920 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
921 RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_UDP,
922 [IXGBE_PACKET_TYPE_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER |
923 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP,
924 [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER |
925 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP |
926 RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_UDP,
927 [IXGBE_PACKET_TYPE_IPV4_SCTP] = RTE_PTYPE_L2_ETHER |
928 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP,
929 [IXGBE_PACKET_TYPE_IPV4_EXT_SCTP] = RTE_PTYPE_L2_ETHER |
930 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_SCTP,
932 if (unlikely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF))
933 return RTE_PTYPE_UNKNOWN;
935 pkt_info = (pkt_info >> IXGBE_PACKET_TYPE_SHIFT) &
936 IXGBE_PACKET_TYPE_MASK;
938 return ptype_table[pkt_info];
941 static inline uint64_t
942 ixgbe_rxd_pkt_info_to_pkt_flags(uint16_t pkt_info)
944 static uint64_t ip_rss_types_map[16] __rte_cache_aligned = {
945 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH,
946 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH,
947 PKT_RX_RSS_HASH, 0, 0, 0,
948 0, 0, 0, PKT_RX_FDIR,
950 #ifdef RTE_LIBRTE_IEEE1588
951 static uint64_t ip_pkt_etqf_map[8] = {
952 0, 0, 0, PKT_RX_IEEE1588_PTP,
956 if (likely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF))
957 return ip_pkt_etqf_map[(pkt_info >> 4) & 0X07] |
958 ip_rss_types_map[pkt_info & 0XF];
960 return ip_rss_types_map[pkt_info & 0XF];
962 return ip_rss_types_map[pkt_info & 0XF];
965 #else /* RTE_NEXT_ABI */
966 static inline uint64_t
967 rx_desc_hlen_type_rss_to_pkt_flags(uint32_t hl_tp_rs)
971 static const uint64_t ip_pkt_types_map[16] = {
972 0, PKT_RX_IPV4_HDR, PKT_RX_IPV4_HDR_EXT, PKT_RX_IPV4_HDR_EXT,
973 PKT_RX_IPV6_HDR, 0, 0, 0,
974 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
975 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
978 static const uint64_t ip_rss_types_map[16] = {
979 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH,
980 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH,
981 PKT_RX_RSS_HASH, 0, 0, 0,
982 0, 0, 0, PKT_RX_FDIR,
985 #ifdef RTE_LIBRTE_IEEE1588
986 static uint64_t ip_pkt_etqf_map[8] = {
987 0, 0, 0, PKT_RX_IEEE1588_PTP,
991 pkt_flags = (hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ?
992 ip_pkt_etqf_map[(hl_tp_rs >> 4) & 0x07] :
993 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F];
995 pkt_flags = (hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ? 0 :
996 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F];
999 return pkt_flags | ip_rss_types_map[hl_tp_rs & 0xF];
1001 #endif /* RTE_NEXT_ABI */
1003 static inline uint64_t
1004 rx_desc_status_to_pkt_flags(uint32_t rx_status)
1009 * Check if VLAN present only.
1010 * Do not check whether L3/L4 rx checksum done by NIC or not,
1011 * That can be found from rte_eth_rxmode.hw_ip_checksum flag
1013 pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0;
1015 #ifdef RTE_LIBRTE_IEEE1588
1016 if (rx_status & IXGBE_RXD_STAT_TMST)
1017 pkt_flags = pkt_flags | PKT_RX_IEEE1588_TMST;
1022 static inline uint64_t
1023 rx_desc_error_to_pkt_flags(uint32_t rx_status)
1026 * Bit 31: IPE, IPv4 checksum error
1027 * Bit 30: L4I, L4I integrity error
1029 static uint64_t error_to_pkt_flags_map[4] = {
1030 0, PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD,
1031 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
1033 return error_to_pkt_flags_map[(rx_status >>
1034 IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
1037 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
1039 * LOOK_AHEAD defines how many desc statuses to check beyond the
1040 * current descriptor.
1041 * It must be a pound define for optimal performance.
1042 * Do not change the value of LOOK_AHEAD, as the ixgbe_rx_scan_hw_ring
1043 * function only works with LOOK_AHEAD=8.
1045 #define LOOK_AHEAD 8
1046 #if (LOOK_AHEAD != 8)
1047 #error "PMD IXGBE: LOOK_AHEAD must be 8\n"
1050 ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq)
1052 volatile union ixgbe_adv_rx_desc *rxdp;
1053 struct ixgbe_rx_entry *rxep;
1054 struct rte_mbuf *mb;
1059 uint32_t s[LOOK_AHEAD];
1060 uint16_t pkt_info[LOOK_AHEAD];
1062 int s[LOOK_AHEAD], nb_dd;
1063 #endif /* RTE_NEXT_ABI */
1064 int i, j, nb_rx = 0;
1067 /* get references to current descriptor and S/W ring entry */
1068 rxdp = &rxq->rx_ring[rxq->rx_tail];
1069 rxep = &rxq->sw_ring[rxq->rx_tail];
1071 /* check to make sure there is at least 1 packet to receive */
1072 if (! (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD))
1076 * Scan LOOK_AHEAD descriptors at a time to determine which descriptors
1077 * reference packets that are ready to be received.
1079 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST;
1080 i += LOOK_AHEAD, rxdp += LOOK_AHEAD, rxep += LOOK_AHEAD)
1082 /* Read desc statuses backwards to avoid race condition */
1083 for (j = LOOK_AHEAD-1; j >= 0; --j)
1084 s[j] = rxdp[j].wb.upper.status_error;
1087 for (j = LOOK_AHEAD - 1; j >= 0; --j)
1088 pkt_info[j] = rxdp[j].wb.lower.lo_dword.
1090 #endif /* RTE_NEXT_ABI */
1092 /* Compute how many status bits were set */
1094 for (j = 0; j < LOOK_AHEAD; ++j)
1095 nb_dd += s[j] & IXGBE_RXDADV_STAT_DD;
1099 /* Translate descriptor info to mbuf format */
1100 for (j = 0; j < nb_dd; ++j) {
1102 pkt_len = (uint16_t)(rxdp[j].wb.upper.length - rxq->crc_len);
1103 mb->data_len = pkt_len;
1104 mb->pkt_len = pkt_len;
1105 mb->vlan_tci = rte_le_to_cpu_16(rxdp[j].wb.upper.vlan);
1107 /* convert descriptor fields to rte mbuf flags */
1109 pkt_flags = rx_desc_status_to_pkt_flags(s[j]);
1110 pkt_flags |= rx_desc_error_to_pkt_flags(s[j]);
1112 ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info[j]);
1113 mb->ol_flags = pkt_flags;
1115 ixgbe_rxd_pkt_info_to_pkt_type(pkt_info[j]);
1116 #else /* RTE_NEXT_ABI */
1117 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(
1118 rxdp[j].wb.lower.lo_dword.data);
1119 /* reuse status field from scan list */
1120 pkt_flags |= rx_desc_status_to_pkt_flags(s[j]);
1121 pkt_flags |= rx_desc_error_to_pkt_flags(s[j]);
1122 mb->ol_flags = pkt_flags;
1123 #endif /* RTE_NEXT_ABI */
1125 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1126 mb->hash.rss = rxdp[j].wb.lower.hi_dword.rss;
1127 else if (pkt_flags & PKT_RX_FDIR) {
1128 mb->hash.fdir.hash =
1129 (uint16_t)((rxdp[j].wb.lower.hi_dword.csum_ip.csum)
1130 & IXGBE_ATR_HASH_MASK);
1131 mb->hash.fdir.id = rxdp[j].wb.lower.hi_dword.csum_ip.ip_id;
1135 /* Move mbuf pointers from the S/W ring to the stage */
1136 for (j = 0; j < LOOK_AHEAD; ++j) {
1137 rxq->rx_stage[i + j] = rxep[j].mbuf;
1140 /* stop if all requested packets could not be received */
1141 if (nb_dd != LOOK_AHEAD)
1145 /* clear software ring entries so we can cleanup correctly */
1146 for (i = 0; i < nb_rx; ++i) {
1147 rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL;
1155 ixgbe_rx_alloc_bufs(struct ixgbe_rx_queue *rxq, bool reset_mbuf)
1157 volatile union ixgbe_adv_rx_desc *rxdp;
1158 struct ixgbe_rx_entry *rxep;
1159 struct rte_mbuf *mb;
1164 /* allocate buffers in bulk directly into the S/W ring */
1165 alloc_idx = rxq->rx_free_trigger - (rxq->rx_free_thresh - 1);
1166 rxep = &rxq->sw_ring[alloc_idx];
1167 diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep,
1168 rxq->rx_free_thresh);
1169 if (unlikely(diag != 0))
1172 rxdp = &rxq->rx_ring[alloc_idx];
1173 for (i = 0; i < rxq->rx_free_thresh; ++i) {
1174 /* populate the static rte mbuf fields */
1179 mb->port = rxq->port_id;
1182 rte_mbuf_refcnt_set(mb, 1);
1183 mb->data_off = RTE_PKTMBUF_HEADROOM;
1185 /* populate the descriptors */
1186 dma_addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mb));
1187 rxdp[i].read.hdr_addr = dma_addr;
1188 rxdp[i].read.pkt_addr = dma_addr;
1191 /* update state of internal queue structure */
1192 rxq->rx_free_trigger = rxq->rx_free_trigger + rxq->rx_free_thresh;
1193 if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
1194 rxq->rx_free_trigger = rxq->rx_free_thresh - 1;
1200 static inline uint16_t
1201 ixgbe_rx_fill_from_stage(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
1204 struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
1207 /* how many packets are ready to return? */
1208 nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
1210 /* copy mbuf pointers to the application's packet list */
1211 for (i = 0; i < nb_pkts; ++i)
1212 rx_pkts[i] = stage[i];
1214 /* update internal queue state */
1215 rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
1216 rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
1221 static inline uint16_t
1222 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1225 struct ixgbe_rx_queue *rxq = (struct ixgbe_rx_queue *)rx_queue;
1228 /* Any previously recv'd pkts will be returned from the Rx stage */
1229 if (rxq->rx_nb_avail)
1230 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1232 /* Scan the H/W ring for packets to receive */
1233 nb_rx = (uint16_t)ixgbe_rx_scan_hw_ring(rxq);
1235 /* update internal queue state */
1236 rxq->rx_next_avail = 0;
1237 rxq->rx_nb_avail = nb_rx;
1238 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
1240 /* if required, allocate new buffers to replenish descriptors */
1241 if (rxq->rx_tail > rxq->rx_free_trigger) {
1242 uint16_t cur_free_trigger = rxq->rx_free_trigger;
1244 if (ixgbe_rx_alloc_bufs(rxq, true) != 0) {
1246 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1247 "queue_id=%u", (unsigned) rxq->port_id,
1248 (unsigned) rxq->queue_id);
1250 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
1251 rxq->rx_free_thresh;
1254 * Need to rewind any previous receives if we cannot
1255 * allocate new buffers to replenish the old ones.
1257 rxq->rx_nb_avail = 0;
1258 rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
1259 for (i = 0, j = rxq->rx_tail; i < nb_rx; ++i, ++j)
1260 rxq->sw_ring[j].mbuf = rxq->rx_stage[i];
1265 /* update tail pointer */
1267 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, cur_free_trigger);
1270 if (rxq->rx_tail >= rxq->nb_rx_desc)
1273 /* received any packets this loop? */
1274 if (rxq->rx_nb_avail)
1275 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1280 /* split requests into chunks of size RTE_PMD_IXGBE_RX_MAX_BURST */
1282 ixgbe_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1287 if (unlikely(nb_pkts == 0))
1290 if (likely(nb_pkts <= RTE_PMD_IXGBE_RX_MAX_BURST))
1291 return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
1293 /* request is relatively large, chunk it up */
1297 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_RX_MAX_BURST);
1298 ret = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
1299 nb_rx = (uint16_t)(nb_rx + ret);
1300 nb_pkts = (uint16_t)(nb_pkts - ret);
1310 /* Stub to avoid extra ifdefs */
1312 ixgbe_recv_pkts_bulk_alloc(__rte_unused void *rx_queue,
1313 __rte_unused struct rte_mbuf **rx_pkts, __rte_unused uint16_t nb_pkts)
1319 ixgbe_rx_alloc_bufs(__rte_unused struct ixgbe_rx_queue *rxq,
1320 __rte_unused bool reset_mbuf)
1324 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
1327 ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1330 struct ixgbe_rx_queue *rxq;
1331 volatile union ixgbe_adv_rx_desc *rx_ring;
1332 volatile union ixgbe_adv_rx_desc *rxdp;
1333 struct ixgbe_rx_entry *sw_ring;
1334 struct ixgbe_rx_entry *rxe;
1335 struct rte_mbuf *rxm;
1336 struct rte_mbuf *nmb;
1337 union ixgbe_adv_rx_desc rxd;
1343 uint32_t hlen_type_rss;
1354 rx_id = rxq->rx_tail;
1355 rx_ring = rxq->rx_ring;
1356 sw_ring = rxq->sw_ring;
1357 while (nb_rx < nb_pkts) {
1359 * The order of operations here is important as the DD status
1360 * bit must not be read after any other descriptor fields.
1361 * rx_ring and rxdp are pointing to volatile data so the order
1362 * of accesses cannot be reordered by the compiler. If they were
1363 * not volatile, they could be reordered which could lead to
1364 * using invalid descriptor fields when read from rxd.
1366 rxdp = &rx_ring[rx_id];
1367 staterr = rxdp->wb.upper.status_error;
1368 if (! (staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1375 * If the IXGBE_RXDADV_STAT_EOP flag is not set, the RX packet
1376 * is likely to be invalid and to be dropped by the various
1377 * validation checks performed by the network stack.
1379 * Allocate a new mbuf to replenish the RX ring descriptor.
1380 * If the allocation fails:
1381 * - arrange for that RX descriptor to be the first one
1382 * being parsed the next time the receive function is
1383 * invoked [on the same queue].
1385 * - Stop parsing the RX ring and return immediately.
1387 * This policy do not drop the packet received in the RX
1388 * descriptor for which the allocation of a new mbuf failed.
1389 * Thus, it allows that packet to be later retrieved if
1390 * mbuf have been freed in the mean time.
1391 * As a side effect, holding RX descriptors instead of
1392 * systematically giving them back to the NIC may lead to
1393 * RX ring exhaustion situations.
1394 * However, the NIC can gracefully prevent such situations
1395 * to happen by sending specific "back-pressure" flow control
1396 * frames to its peer(s).
1398 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1399 "ext_err_stat=0x%08x pkt_len=%u",
1400 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1401 (unsigned) rx_id, (unsigned) staterr,
1402 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1404 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1406 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1407 "queue_id=%u", (unsigned) rxq->port_id,
1408 (unsigned) rxq->queue_id);
1409 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1414 rxe = &sw_ring[rx_id];
1416 if (rx_id == rxq->nb_rx_desc)
1419 /* Prefetch next mbuf while processing current one. */
1420 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1423 * When next RX descriptor is on a cache-line boundary,
1424 * prefetch the next 4 RX descriptors and the next 8 pointers
1427 if ((rx_id & 0x3) == 0) {
1428 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1429 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1435 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1436 rxdp->read.hdr_addr = dma_addr;
1437 rxdp->read.pkt_addr = dma_addr;
1440 * Initialize the returned mbuf.
1441 * 1) setup generic mbuf fields:
1442 * - number of segments,
1445 * - RX port identifier.
1446 * 2) integrate hardware offload data, if any:
1447 * - RSS flag & hash,
1448 * - IP checksum flag,
1449 * - VLAN TCI, if any,
1452 pkt_len = (uint16_t) (rte_le_to_cpu_16(rxd.wb.upper.length) -
1454 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1455 rte_packet_prefetch((char *)rxm->buf_addr + rxm->data_off);
1458 rxm->pkt_len = pkt_len;
1459 rxm->data_len = pkt_len;
1460 rxm->port = rxq->port_id;
1463 pkt_info = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.hs_rss.
1465 /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
1466 rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
1468 pkt_flags = rx_desc_status_to_pkt_flags(staterr);
1469 pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
1470 pkt_flags = pkt_flags |
1471 ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info);
1472 rxm->ol_flags = pkt_flags;
1473 rxm->packet_type = ixgbe_rxd_pkt_info_to_pkt_type(pkt_info);
1474 #else /* RTE_NEXT_ABI */
1475 hlen_type_rss = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data);
1476 /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
1477 rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
1479 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1480 pkt_flags = pkt_flags | rx_desc_status_to_pkt_flags(staterr);
1481 pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
1482 rxm->ol_flags = pkt_flags;
1483 #endif /* RTE_NEXT_ABI */
1485 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1486 rxm->hash.rss = rxd.wb.lower.hi_dword.rss;
1487 else if (pkt_flags & PKT_RX_FDIR) {
1488 rxm->hash.fdir.hash =
1489 (uint16_t)((rxd.wb.lower.hi_dword.csum_ip.csum)
1490 & IXGBE_ATR_HASH_MASK);
1491 rxm->hash.fdir.id = rxd.wb.lower.hi_dword.csum_ip.ip_id;
1494 * Store the mbuf address into the next entry of the array
1495 * of returned packets.
1497 rx_pkts[nb_rx++] = rxm;
1499 rxq->rx_tail = rx_id;
1502 * If the number of free RX descriptors is greater than the RX free
1503 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1505 * Update the RDT with the value of the last processed RX descriptor
1506 * minus 1, to guarantee that the RDT register is never equal to the
1507 * RDH register, which creates a "full" ring situtation from the
1508 * hardware point of view...
1510 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1511 if (nb_hold > rxq->rx_free_thresh) {
1512 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1513 "nb_hold=%u nb_rx=%u",
1514 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1515 (unsigned) rx_id, (unsigned) nb_hold,
1517 rx_id = (uint16_t) ((rx_id == 0) ?
1518 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1519 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1522 rxq->nb_rx_hold = nb_hold;
1527 * Detect an RSC descriptor.
1529 static inline uint32_t
1530 ixgbe_rsc_count(union ixgbe_adv_rx_desc *rx)
1532 return (rte_le_to_cpu_32(rx->wb.lower.lo_dword.data) &
1533 IXGBE_RXDADV_RSCCNT_MASK) >> IXGBE_RXDADV_RSCCNT_SHIFT;
1537 * ixgbe_fill_cluster_head_buf - fill the first mbuf of the returned packet
1539 * Fill the following info in the HEAD buffer of the Rx cluster:
1540 * - RX port identifier
1541 * - hardware offload data, if any:
1543 * - IP checksum flag
1544 * - VLAN TCI, if any
1546 * @head HEAD of the packet cluster
1547 * @desc HW descriptor to get data from
1548 * @port_id Port ID of the Rx queue
1551 ixgbe_fill_cluster_head_buf(
1552 struct rte_mbuf *head,
1553 union ixgbe_adv_rx_desc *desc,
1561 head->port = port_id;
1563 /* The vlan_tci field is only valid when PKT_RX_VLAN_PKT is
1564 * set in the pkt_flags field.
1566 head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan);
1567 pkt_info = rte_le_to_cpu_32(desc->wb.lower.lo_dword.hs_rss.pkt_info);
1568 pkt_flags = rx_desc_status_to_pkt_flags(staterr);
1569 pkt_flags |= rx_desc_error_to_pkt_flags(staterr);
1570 pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags(pkt_info);
1571 head->ol_flags = pkt_flags;
1572 head->packet_type = ixgbe_rxd_pkt_info_to_pkt_type(pkt_info);
1573 #else /* RTE_NEXT_ABI */
1574 uint32_t hlen_type_rss;
1577 head->port = port_id;
1580 * The vlan_tci field is only valid when PKT_RX_VLAN_PKT is
1581 * set in the pkt_flags field.
1583 head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan);
1584 hlen_type_rss = rte_le_to_cpu_32(desc->wb.lower.lo_dword.data);
1585 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1586 pkt_flags |= rx_desc_status_to_pkt_flags(staterr);
1587 pkt_flags |= rx_desc_error_to_pkt_flags(staterr);
1588 head->ol_flags = pkt_flags;
1589 #endif /* RTE_NEXT_ABI */
1591 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1592 head->hash.rss = rte_le_to_cpu_32(desc->wb.lower.hi_dword.rss);
1593 else if (pkt_flags & PKT_RX_FDIR) {
1594 head->hash.fdir.hash =
1595 rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.csum)
1596 & IXGBE_ATR_HASH_MASK;
1597 head->hash.fdir.id =
1598 rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.ip_id);
1603 * ixgbe_recv_pkts_lro - receive handler for and LRO case.
1605 * @rx_queue Rx queue handle
1606 * @rx_pkts table of received packets
1607 * @nb_pkts size of rx_pkts table
1608 * @bulk_alloc if TRUE bulk allocation is used for a HW ring refilling
1610 * Handles the Rx HW ring completions when RSC feature is configured. Uses an
1611 * additional ring of ixgbe_rsc_entry's that will hold the relevant RSC info.
1613 * We use the same logic as in Linux and in FreeBSD ixgbe drivers:
1614 * 1) When non-EOP RSC completion arrives:
1615 * a) Update the HEAD of the current RSC aggregation cluster with the new
1616 * segment's data length.
1617 * b) Set the "next" pointer of the current segment to point to the segment
1618 * at the NEXTP index.
1619 * c) Pass the HEAD of RSC aggregation cluster on to the next NEXTP entry
1620 * in the sw_rsc_ring.
1621 * 2) When EOP arrives we just update the cluster's total length and offload
1622 * flags and deliver the cluster up to the upper layers. In our case - put it
1623 * in the rx_pkts table.
1625 * Returns the number of received packets/clusters (according to the "bulk
1626 * receive" interface).
1628 static inline uint16_t
1629 ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
1632 struct ixgbe_rx_queue *rxq = rx_queue;
1633 volatile union ixgbe_adv_rx_desc *rx_ring = rxq->rx_ring;
1634 struct ixgbe_rx_entry *sw_ring = rxq->sw_ring;
1635 struct ixgbe_scattered_rx_entry *sw_sc_ring = rxq->sw_sc_ring;
1636 uint16_t rx_id = rxq->rx_tail;
1638 uint16_t nb_hold = rxq->nb_rx_hold;
1639 uint16_t prev_id = rxq->rx_tail;
1641 while (nb_rx < nb_pkts) {
1643 struct ixgbe_rx_entry *rxe;
1644 struct ixgbe_scattered_rx_entry *sc_entry;
1645 struct ixgbe_scattered_rx_entry *next_sc_entry;
1646 struct ixgbe_rx_entry *next_rxe;
1647 struct rte_mbuf *first_seg;
1648 struct rte_mbuf *rxm;
1649 struct rte_mbuf *nmb;
1650 union ixgbe_adv_rx_desc rxd;
1653 volatile union ixgbe_adv_rx_desc *rxdp;
1658 * The code in this whole file uses the volatile pointer to
1659 * ensure the read ordering of the status and the rest of the
1660 * descriptor fields (on the compiler level only!!!). This is so
1661 * UGLY - why not to just use the compiler barrier instead? DPDK
1662 * even has the rte_compiler_barrier() for that.
1664 * But most importantly this is just wrong because this doesn't
1665 * ensure memory ordering in a general case at all. For
1666 * instance, DPDK is supposed to work on Power CPUs where
1667 * compiler barrier may just not be enough!
1669 * I tried to write only this function properly to have a
1670 * starting point (as a part of an LRO/RSC series) but the
1671 * compiler cursed at me when I tried to cast away the
1672 * "volatile" from rx_ring (yes, it's volatile too!!!). So, I'm
1673 * keeping it the way it is for now.
1675 * The code in this file is broken in so many other places and
1676 * will just not work on a big endian CPU anyway therefore the
1677 * lines below will have to be revisited together with the rest
1681 * - Get rid of "volatile" crap and let the compiler do its
1683 * - Use the proper memory barrier (rte_rmb()) to ensure the
1684 * memory ordering below.
1686 rxdp = &rx_ring[rx_id];
1687 staterr = rte_le_to_cpu_32(rxdp->wb.upper.status_error);
1689 if (!(staterr & IXGBE_RXDADV_STAT_DD))
1694 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1695 "staterr=0x%x data_len=%u",
1696 rxq->port_id, rxq->queue_id, rx_id, staterr,
1697 rte_le_to_cpu_16(rxd.wb.upper.length));
1700 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1702 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed "
1703 "port_id=%u queue_id=%u",
1704 rxq->port_id, rxq->queue_id);
1706 rte_eth_devices[rxq->port_id].data->
1707 rx_mbuf_alloc_failed++;
1710 } else if (nb_hold > rxq->rx_free_thresh) {
1711 uint16_t next_rdt = rxq->rx_free_trigger;
1713 if (!ixgbe_rx_alloc_bufs(rxq, false)) {
1715 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr,
1717 nb_hold -= rxq->rx_free_thresh;
1719 PMD_RX_LOG(DEBUG, "RX bulk alloc failed "
1720 "port_id=%u queue_id=%u",
1721 rxq->port_id, rxq->queue_id);
1723 rte_eth_devices[rxq->port_id].data->
1724 rx_mbuf_alloc_failed++;
1730 rxe = &sw_ring[rx_id];
1731 eop = staterr & IXGBE_RXDADV_STAT_EOP;
1733 next_id = rx_id + 1;
1734 if (next_id == rxq->nb_rx_desc)
1737 /* Prefetch next mbuf while processing current one. */
1738 rte_ixgbe_prefetch(sw_ring[next_id].mbuf);
1741 * When next RX descriptor is on a cache-line boundary,
1742 * prefetch the next 4 RX descriptors and the next 4 pointers
1745 if ((next_id & 0x3) == 0) {
1746 rte_ixgbe_prefetch(&rx_ring[next_id]);
1747 rte_ixgbe_prefetch(&sw_ring[next_id]);
1754 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1756 * Update RX descriptor with the physical address of the
1757 * new data buffer of the new allocated mbuf.
1761 rxm->data_off = RTE_PKTMBUF_HEADROOM;
1762 rxdp->read.hdr_addr = dma;
1763 rxdp->read.pkt_addr = dma;
1768 * Set data length & data buffer address of mbuf.
1770 data_len = rte_le_to_cpu_16(rxd.wb.upper.length);
1771 rxm->data_len = data_len;
1776 * Get next descriptor index:
1777 * - For RSC it's in the NEXTP field.
1778 * - For a scattered packet - it's just a following
1781 if (ixgbe_rsc_count(&rxd))
1783 (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1784 IXGBE_RXDADV_NEXTP_SHIFT;
1788 next_sc_entry = &sw_sc_ring[nextp_id];
1789 next_rxe = &sw_ring[nextp_id];
1790 rte_ixgbe_prefetch(next_rxe);
1793 sc_entry = &sw_sc_ring[rx_id];
1794 first_seg = sc_entry->fbuf;
1795 sc_entry->fbuf = NULL;
1798 * If this is the first buffer of the received packet,
1799 * set the pointer to the first mbuf of the packet and
1800 * initialize its context.
1801 * Otherwise, update the total length and the number of segments
1802 * of the current scattered packet, and update the pointer to
1803 * the last mbuf of the current packet.
1805 if (first_seg == NULL) {
1807 first_seg->pkt_len = data_len;
1808 first_seg->nb_segs = 1;
1810 first_seg->pkt_len += data_len;
1811 first_seg->nb_segs++;
1818 * If this is not the last buffer of the received packet, update
1819 * the pointer to the first mbuf at the NEXTP entry in the
1820 * sw_sc_ring and continue to parse the RX ring.
1823 rxm->next = next_rxe->mbuf;
1824 next_sc_entry->fbuf = first_seg;
1829 * This is the last buffer of the received packet - return
1830 * the current cluster to the user.
1834 /* Initialize the first mbuf of the returned packet */
1835 ixgbe_fill_cluster_head_buf(first_seg, &rxd, rxq->port_id,
1838 /* Prefetch data of first segment, if configured to do so. */
1839 rte_packet_prefetch((char *)first_seg->buf_addr +
1840 first_seg->data_off);
1843 * Store the mbuf address into the next entry of the array
1844 * of returned packets.
1846 rx_pkts[nb_rx++] = first_seg;
1850 * Record index of the next RX descriptor to probe.
1852 rxq->rx_tail = rx_id;
1855 * If the number of free RX descriptors is greater than the RX free
1856 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1858 * Update the RDT with the value of the last processed RX descriptor
1859 * minus 1, to guarantee that the RDT register is never equal to the
1860 * RDH register, which creates a "full" ring situtation from the
1861 * hardware point of view...
1863 if (!bulk_alloc && nb_hold > rxq->rx_free_thresh) {
1864 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1865 "nb_hold=%u nb_rx=%u",
1866 rxq->port_id, rxq->queue_id, rx_id, nb_hold, nb_rx);
1869 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, prev_id);
1873 rxq->nb_rx_hold = nb_hold;
1878 ixgbe_recv_pkts_lro_single_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1881 return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, false);
1885 ixgbe_recv_pkts_lro_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1888 return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, true);
1891 /*********************************************************************
1893 * Queue management functions
1895 **********************************************************************/
1898 * Rings setup and release.
1900 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
1901 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
1902 * also optimize cache line size effect. H/W supports up to cache line size 128.
1904 #define IXGBE_ALIGN 128
1907 * Maximum number of Ring Descriptors.
1909 * Since RDLEN/TDLEN should be multiple of 128 bytes, the number of ring
1910 * descriptors should meet the following condition:
1911 * (num_ring_desc * sizeof(rx/tx descriptor)) % 128 == 0
1913 #define IXGBE_MIN_RING_DESC 32
1914 #define IXGBE_MAX_RING_DESC 4096
1917 * Create memzone for HW rings. malloc can't be used as the physical address is
1918 * needed. If the memzone is already created, then this function returns a ptr
1921 static const struct rte_memzone * __attribute__((cold))
1922 ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
1923 uint16_t queue_id, uint32_t ring_size, int socket_id)
1925 char z_name[RTE_MEMZONE_NAMESIZE];
1926 const struct rte_memzone *mz;
1928 snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
1929 dev->driver->pci_drv.name, ring_name,
1930 dev->data->port_id, queue_id);
1932 mz = rte_memzone_lookup(z_name);
1936 #ifdef RTE_LIBRTE_XEN_DOM0
1937 return rte_memzone_reserve_bounded(z_name, ring_size,
1938 socket_id, 0, IXGBE_ALIGN, RTE_PGSIZE_2M);
1940 return rte_memzone_reserve_aligned(z_name, ring_size,
1941 socket_id, 0, IXGBE_ALIGN);
1945 static void __attribute__((cold))
1946 ixgbe_tx_queue_release_mbufs(struct ixgbe_tx_queue *txq)
1950 if (txq->sw_ring != NULL) {
1951 for (i = 0; i < txq->nb_tx_desc; i++) {
1952 if (txq->sw_ring[i].mbuf != NULL) {
1953 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
1954 txq->sw_ring[i].mbuf = NULL;
1960 static void __attribute__((cold))
1961 ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq)
1964 txq->sw_ring != NULL)
1965 rte_free(txq->sw_ring);
1968 static void __attribute__((cold))
1969 ixgbe_tx_queue_release(struct ixgbe_tx_queue *txq)
1971 if (txq != NULL && txq->ops != NULL) {
1972 txq->ops->release_mbufs(txq);
1973 txq->ops->free_swring(txq);
1978 void __attribute__((cold))
1979 ixgbe_dev_tx_queue_release(void *txq)
1981 ixgbe_tx_queue_release(txq);
1984 /* (Re)set dynamic ixgbe_tx_queue fields to defaults */
1985 static void __attribute__((cold))
1986 ixgbe_reset_tx_queue(struct ixgbe_tx_queue *txq)
1988 static const union ixgbe_adv_tx_desc zeroed_desc = {{0}};
1989 struct ixgbe_tx_entry *txe = txq->sw_ring;
1992 /* Zero out HW ring memory */
1993 for (i = 0; i < txq->nb_tx_desc; i++) {
1994 txq->tx_ring[i] = zeroed_desc;
1997 /* Initialize SW ring entries */
1998 prev = (uint16_t) (txq->nb_tx_desc - 1);
1999 for (i = 0; i < txq->nb_tx_desc; i++) {
2000 volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i];
2001 txd->wb.status = IXGBE_TXD_STAT_DD;
2004 txe[prev].next_id = i;
2008 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
2009 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
2012 txq->nb_tx_used = 0;
2014 * Always allow 1 descriptor to be un-allocated to avoid
2015 * a H/W race condition
2017 txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
2018 txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
2020 memset((void*)&txq->ctx_cache, 0,
2021 IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info));
2024 static const struct ixgbe_txq_ops def_txq_ops = {
2025 .release_mbufs = ixgbe_tx_queue_release_mbufs,
2026 .free_swring = ixgbe_tx_free_swring,
2027 .reset = ixgbe_reset_tx_queue,
2030 /* Takes an ethdev and a queue and sets up the tx function to be used based on
2031 * the queue parameters. Used in tx_queue_setup by primary process and then
2032 * in dev_init by secondary process when attaching to an existing ethdev.
2034 void __attribute__((cold))
2035 ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq)
2037 /* Use a simple Tx queue (no offloads, no multi segs) if possible */
2038 if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS)
2039 && (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) {
2040 PMD_INIT_LOG(INFO, "Using simple tx code path");
2041 #ifdef RTE_IXGBE_INC_VECTOR
2042 if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
2043 (rte_eal_process_type() != RTE_PROC_PRIMARY ||
2044 ixgbe_txq_vec_setup(txq) == 0)) {
2045 PMD_INIT_LOG(INFO, "Vector tx enabled.");
2046 dev->tx_pkt_burst = ixgbe_xmit_pkts_vec;
2049 dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
2051 PMD_INIT_LOG(INFO, "Using full-featured tx code path");
2053 " - txq_flags = %lx " "[IXGBE_SIMPLE_FLAGS=%lx]",
2054 (unsigned long)txq->txq_flags,
2055 (unsigned long)IXGBE_SIMPLE_FLAGS);
2057 " - tx_rs_thresh = %lu " "[RTE_PMD_IXGBE_TX_MAX_BURST=%lu]",
2058 (unsigned long)txq->tx_rs_thresh,
2059 (unsigned long)RTE_PMD_IXGBE_TX_MAX_BURST);
2060 dev->tx_pkt_burst = ixgbe_xmit_pkts;
2064 int __attribute__((cold))
2065 ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
2068 unsigned int socket_id,
2069 const struct rte_eth_txconf *tx_conf)
2071 const struct rte_memzone *tz;
2072 struct ixgbe_tx_queue *txq;
2073 struct ixgbe_hw *hw;
2074 uint16_t tx_rs_thresh, tx_free_thresh;
2076 PMD_INIT_FUNC_TRACE();
2077 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2080 * Validate number of transmit descriptors.
2081 * It must not exceed hardware maximum, and must be multiple
2084 if (((nb_desc * sizeof(union ixgbe_adv_tx_desc)) % IXGBE_ALIGN) != 0 ||
2085 (nb_desc > IXGBE_MAX_RING_DESC) ||
2086 (nb_desc < IXGBE_MIN_RING_DESC)) {
2091 * The following two parameters control the setting of the RS bit on
2092 * transmit descriptors.
2093 * TX descriptors will have their RS bit set after txq->tx_rs_thresh
2094 * descriptors have been used.
2095 * The TX descriptor ring will be cleaned after txq->tx_free_thresh
2096 * descriptors are used or if the number of descriptors required
2097 * to transmit a packet is greater than the number of free TX
2099 * The following constraints must be satisfied:
2100 * tx_rs_thresh must be greater than 0.
2101 * tx_rs_thresh must be less than the size of the ring minus 2.
2102 * tx_rs_thresh must be less than or equal to tx_free_thresh.
2103 * tx_rs_thresh must be a divisor of the ring size.
2104 * tx_free_thresh must be greater than 0.
2105 * tx_free_thresh must be less than the size of the ring minus 3.
2106 * One descriptor in the TX ring is used as a sentinel to avoid a
2107 * H/W race condition, hence the maximum threshold constraints.
2108 * When set to zero use default values.
2110 tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ?
2111 tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
2112 tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
2113 tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
2114 if (tx_rs_thresh >= (nb_desc - 2)) {
2115 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the number "
2116 "of TX descriptors minus 2. (tx_rs_thresh=%u "
2117 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2118 (int)dev->data->port_id, (int)queue_idx);
2121 if (tx_free_thresh >= (nb_desc - 3)) {
2122 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the "
2123 "tx_free_thresh must be less than the number of "
2124 "TX descriptors minus 3. (tx_free_thresh=%u "
2125 "port=%d queue=%d)",
2126 (unsigned int)tx_free_thresh,
2127 (int)dev->data->port_id, (int)queue_idx);
2130 if (tx_rs_thresh > tx_free_thresh) {
2131 PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or equal to "
2132 "tx_free_thresh. (tx_free_thresh=%u "
2133 "tx_rs_thresh=%u port=%d queue=%d)",
2134 (unsigned int)tx_free_thresh,
2135 (unsigned int)tx_rs_thresh,
2136 (int)dev->data->port_id,
2140 if ((nb_desc % tx_rs_thresh) != 0) {
2141 PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the "
2142 "number of TX descriptors. (tx_rs_thresh=%u "
2143 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2144 (int)dev->data->port_id, (int)queue_idx);
2149 * If rs_bit_thresh is greater than 1, then TX WTHRESH should be
2150 * set to 0. If WTHRESH is greater than zero, the RS bit is ignored
2151 * by the NIC and all descriptors are written back after the NIC
2152 * accumulates WTHRESH descriptors.
2154 if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) {
2155 PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if "
2156 "tx_rs_thresh is greater than 1. (tx_rs_thresh=%u "
2157 "port=%d queue=%d)", (unsigned int)tx_rs_thresh,
2158 (int)dev->data->port_id, (int)queue_idx);
2162 /* Free memory prior to re-allocation if needed... */
2163 if (dev->data->tx_queues[queue_idx] != NULL) {
2164 ixgbe_tx_queue_release(dev->data->tx_queues[queue_idx]);
2165 dev->data->tx_queues[queue_idx] = NULL;
2168 /* First allocate the tx queue data structure */
2169 txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct ixgbe_tx_queue),
2170 RTE_CACHE_LINE_SIZE, socket_id);
2175 * Allocate TX ring hardware descriptors. A memzone large enough to
2176 * handle the maximum ring size is allocated in order to allow for
2177 * resizing in later calls to the queue setup function.
2179 tz = ring_dma_zone_reserve(dev, "tx_ring", queue_idx,
2180 sizeof(union ixgbe_adv_tx_desc) * IXGBE_MAX_RING_DESC,
2183 ixgbe_tx_queue_release(txq);
2187 txq->nb_tx_desc = nb_desc;
2188 txq->tx_rs_thresh = tx_rs_thresh;
2189 txq->tx_free_thresh = tx_free_thresh;
2190 txq->pthresh = tx_conf->tx_thresh.pthresh;
2191 txq->hthresh = tx_conf->tx_thresh.hthresh;
2192 txq->wthresh = tx_conf->tx_thresh.wthresh;
2193 txq->queue_id = queue_idx;
2194 txq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2195 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2196 txq->port_id = dev->data->port_id;
2197 txq->txq_flags = tx_conf->txq_flags;
2198 txq->ops = &def_txq_ops;
2199 txq->tx_deferred_start = tx_conf->tx_deferred_start;
2202 * Modification to set VFTDT for virtual function if vf is detected
2204 if (hw->mac.type == ixgbe_mac_82599_vf ||
2205 hw->mac.type == ixgbe_mac_X540_vf ||
2206 hw->mac.type == ixgbe_mac_X550_vf ||
2207 hw->mac.type == ixgbe_mac_X550EM_x_vf)
2208 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_VFTDT(queue_idx));
2210 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_TDT(txq->reg_idx));
2211 #ifndef RTE_LIBRTE_XEN_DOM0
2212 txq->tx_ring_phys_addr = (uint64_t) tz->phys_addr;
2214 txq->tx_ring_phys_addr = rte_mem_phy2mch(tz->memseg_id, tz->phys_addr);
2216 txq->tx_ring = (union ixgbe_adv_tx_desc *) tz->addr;
2218 /* Allocate software ring */
2219 txq->sw_ring = rte_zmalloc_socket("txq->sw_ring",
2220 sizeof(struct ixgbe_tx_entry) * nb_desc,
2221 RTE_CACHE_LINE_SIZE, socket_id);
2222 if (txq->sw_ring == NULL) {
2223 ixgbe_tx_queue_release(txq);
2226 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
2227 txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
2229 /* set up vector or scalar TX function as appropriate */
2230 ixgbe_set_tx_function(dev, txq);
2232 txq->ops->reset(txq);
2234 dev->data->tx_queues[queue_idx] = txq;
2241 * ixgbe_free_sc_cluster - free the not-yet-completed scattered cluster
2243 * The "next" pointer of the last segment of (not-yet-completed) RSC clusters
2244 * in the sw_rsc_ring is not set to NULL but rather points to the next
2245 * mbuf of this RSC aggregation (that has not been completed yet and still
2246 * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we
2247 * will just free first "nb_segs" segments of the cluster explicitly by calling
2248 * an rte_pktmbuf_free_seg().
2250 * @m scattered cluster head
2252 static void __attribute__((cold))
2253 ixgbe_free_sc_cluster(struct rte_mbuf *m)
2255 uint8_t i, nb_segs = m->nb_segs;
2256 struct rte_mbuf *next_seg;
2258 for (i = 0; i < nb_segs; i++) {
2260 rte_pktmbuf_free_seg(m);
2265 static void __attribute__((cold))
2266 ixgbe_rx_queue_release_mbufs(struct ixgbe_rx_queue *rxq)
2270 if (rxq->sw_ring != NULL) {
2271 for (i = 0; i < rxq->nb_rx_desc; i++) {
2272 if (rxq->sw_ring[i].mbuf != NULL &&
2273 rte_mbuf_refcnt_read(rxq->sw_ring[i].mbuf)) {
2274 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
2275 rxq->sw_ring[i].mbuf = NULL;
2278 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2279 if (rxq->rx_nb_avail) {
2280 for (i = 0; i < rxq->rx_nb_avail; ++i) {
2281 struct rte_mbuf *mb;
2282 mb = rxq->rx_stage[rxq->rx_next_avail + i];
2283 rte_pktmbuf_free_seg(mb);
2285 rxq->rx_nb_avail = 0;
2290 if (rxq->sw_sc_ring)
2291 for (i = 0; i < rxq->nb_rx_desc; i++)
2292 if (rxq->sw_sc_ring[i].fbuf) {
2293 ixgbe_free_sc_cluster(rxq->sw_sc_ring[i].fbuf);
2294 rxq->sw_sc_ring[i].fbuf = NULL;
2298 static void __attribute__((cold))
2299 ixgbe_rx_queue_release(struct ixgbe_rx_queue *rxq)
2302 ixgbe_rx_queue_release_mbufs(rxq);
2303 rte_free(rxq->sw_ring);
2304 rte_free(rxq->sw_sc_ring);
2309 void __attribute__((cold))
2310 ixgbe_dev_rx_queue_release(void *rxq)
2312 ixgbe_rx_queue_release(rxq);
2316 * Check if Rx Burst Bulk Alloc function can be used.
2318 * 0: the preconditions are satisfied and the bulk allocation function
2320 * -EINVAL: the preconditions are NOT satisfied and the default Rx burst
2321 * function must be used.
2323 static inline int __attribute__((cold))
2324 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2325 check_rx_burst_bulk_alloc_preconditions(struct ixgbe_rx_queue *rxq)
2327 check_rx_burst_bulk_alloc_preconditions(__rte_unused struct ixgbe_rx_queue *rxq)
2333 * Make sure the following pre-conditions are satisfied:
2334 * rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST
2335 * rxq->rx_free_thresh < rxq->nb_rx_desc
2336 * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
2337 * rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST)
2338 * Scattered packets are not supported. This should be checked
2339 * outside of this function.
2341 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2342 if (!(rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST)) {
2343 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2344 "rxq->rx_free_thresh=%d, "
2345 "RTE_PMD_IXGBE_RX_MAX_BURST=%d",
2346 rxq->rx_free_thresh, RTE_PMD_IXGBE_RX_MAX_BURST);
2348 } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) {
2349 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2350 "rxq->rx_free_thresh=%d, "
2351 "rxq->nb_rx_desc=%d",
2352 rxq->rx_free_thresh, rxq->nb_rx_desc);
2354 } else if (!((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0)) {
2355 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2356 "rxq->nb_rx_desc=%d, "
2357 "rxq->rx_free_thresh=%d",
2358 rxq->nb_rx_desc, rxq->rx_free_thresh);
2360 } else if (!(rxq->nb_rx_desc <
2361 (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST))) {
2362 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
2363 "rxq->nb_rx_desc=%d, "
2364 "IXGBE_MAX_RING_DESC=%d, "
2365 "RTE_PMD_IXGBE_RX_MAX_BURST=%d",
2366 rxq->nb_rx_desc, IXGBE_MAX_RING_DESC,
2367 RTE_PMD_IXGBE_RX_MAX_BURST);
2377 /* Reset dynamic ixgbe_rx_queue fields back to defaults */
2378 static void __attribute__((cold))
2379 ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq)
2381 static const union ixgbe_adv_rx_desc zeroed_desc = {{0}};
2383 uint16_t len = rxq->nb_rx_desc;
2386 * By default, the Rx queue setup function allocates enough memory for
2387 * IXGBE_MAX_RING_DESC. The Rx Burst bulk allocation function requires
2388 * extra memory at the end of the descriptor ring to be zero'd out. A
2389 * pre-condition for using the Rx burst bulk alloc function is that the
2390 * number of descriptors is less than or equal to
2391 * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the
2392 * constraints here to see if we need to zero out memory after the end
2393 * of the H/W descriptor ring.
2395 if (adapter->rx_bulk_alloc_allowed)
2396 /* zero out extra memory */
2397 len += RTE_PMD_IXGBE_RX_MAX_BURST;
2400 * Zero out HW ring memory. Zero out extra memory at the end of
2401 * the H/W ring so look-ahead logic in Rx Burst bulk alloc function
2402 * reads extra memory as zeros.
2404 for (i = 0; i < len; i++) {
2405 rxq->rx_ring[i] = zeroed_desc;
2408 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2410 * initialize extra software ring entries. Space for these extra
2411 * entries is always allocated
2413 memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
2414 for (i = rxq->nb_rx_desc; i < len; ++i) {
2415 rxq->sw_ring[i].mbuf = &rxq->fake_mbuf;
2418 rxq->rx_nb_avail = 0;
2419 rxq->rx_next_avail = 0;
2420 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
2421 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
2423 rxq->nb_rx_hold = 0;
2424 rxq->pkt_first_seg = NULL;
2425 rxq->pkt_last_seg = NULL;
2428 int __attribute__((cold))
2429 ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
2432 unsigned int socket_id,
2433 const struct rte_eth_rxconf *rx_conf,
2434 struct rte_mempool *mp)
2436 const struct rte_memzone *rz;
2437 struct ixgbe_rx_queue *rxq;
2438 struct ixgbe_hw *hw;
2440 struct ixgbe_adapter *adapter =
2441 (struct ixgbe_adapter *)dev->data->dev_private;
2443 PMD_INIT_FUNC_TRACE();
2444 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2447 * Validate number of receive descriptors.
2448 * It must not exceed hardware maximum, and must be multiple
2451 if (((nb_desc * sizeof(union ixgbe_adv_rx_desc)) % IXGBE_ALIGN) != 0 ||
2452 (nb_desc > IXGBE_MAX_RING_DESC) ||
2453 (nb_desc < IXGBE_MIN_RING_DESC)) {
2457 /* Free memory prior to re-allocation if needed... */
2458 if (dev->data->rx_queues[queue_idx] != NULL) {
2459 ixgbe_rx_queue_release(dev->data->rx_queues[queue_idx]);
2460 dev->data->rx_queues[queue_idx] = NULL;
2463 /* First allocate the rx queue data structure */
2464 rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct ixgbe_rx_queue),
2465 RTE_CACHE_LINE_SIZE, socket_id);
2469 rxq->nb_rx_desc = nb_desc;
2470 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
2471 rxq->queue_id = queue_idx;
2472 rxq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2473 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2474 rxq->port_id = dev->data->port_id;
2475 rxq->crc_len = (uint8_t) ((dev->data->dev_conf.rxmode.hw_strip_crc) ?
2477 rxq->drop_en = rx_conf->rx_drop_en;
2478 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
2481 * Allocate RX ring hardware descriptors. A memzone large enough to
2482 * handle the maximum ring size is allocated in order to allow for
2483 * resizing in later calls to the queue setup function.
2485 rz = ring_dma_zone_reserve(dev, "rx_ring", queue_idx,
2486 RX_RING_SZ, socket_id);
2488 ixgbe_rx_queue_release(rxq);
2493 * Zero init all the descriptors in the ring.
2495 memset (rz->addr, 0, RX_RING_SZ);
2498 * Modified to setup VFRDT for Virtual Function
2500 if (hw->mac.type == ixgbe_mac_82599_vf ||
2501 hw->mac.type == ixgbe_mac_X540_vf ||
2502 hw->mac.type == ixgbe_mac_X550_vf ||
2503 hw->mac.type == ixgbe_mac_X550EM_x_vf) {
2505 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDT(queue_idx));
2507 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDH(queue_idx));
2511 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDT(rxq->reg_idx));
2513 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDH(rxq->reg_idx));
2515 #ifndef RTE_LIBRTE_XEN_DOM0
2516 rxq->rx_ring_phys_addr = (uint64_t) rz->phys_addr;
2518 rxq->rx_ring_phys_addr = rte_mem_phy2mch(rz->memseg_id, rz->phys_addr);
2520 rxq->rx_ring = (union ixgbe_adv_rx_desc *) rz->addr;
2523 * Certain constraints must be met in order to use the bulk buffer
2524 * allocation Rx burst function. If any of Rx queues doesn't meet them
2525 * the feature should be disabled for the whole port.
2527 if (check_rx_burst_bulk_alloc_preconditions(rxq)) {
2528 PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Rx Bulk Alloc "
2529 "preconditions - canceling the feature for "
2530 "the whole port[%d]",
2531 rxq->queue_id, rxq->port_id);
2532 adapter->rx_bulk_alloc_allowed = false;
2536 * Allocate software ring. Allow for space at the end of the
2537 * S/W ring to make sure look-ahead logic in bulk alloc Rx burst
2538 * function does not access an invalid memory region.
2541 if (adapter->rx_bulk_alloc_allowed)
2542 len += RTE_PMD_IXGBE_RX_MAX_BURST;
2544 rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
2545 sizeof(struct ixgbe_rx_entry) * len,
2546 RTE_CACHE_LINE_SIZE, socket_id);
2547 if (!rxq->sw_ring) {
2548 ixgbe_rx_queue_release(rxq);
2553 * Always allocate even if it's not going to be needed in order to
2554 * simplify the code.
2556 * This ring is used in LRO and Scattered Rx cases and Scattered Rx may
2557 * be requested in ixgbe_dev_rx_init(), which is called later from
2561 rte_zmalloc_socket("rxq->sw_sc_ring",
2562 sizeof(struct ixgbe_scattered_rx_entry) * len,
2563 RTE_CACHE_LINE_SIZE, socket_id);
2564 if (!rxq->sw_sc_ring) {
2565 ixgbe_rx_queue_release(rxq);
2569 PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p "
2570 "dma_addr=0x%"PRIx64,
2571 rxq->sw_ring, rxq->sw_sc_ring, rxq->rx_ring,
2572 rxq->rx_ring_phys_addr);
2574 if (!rte_is_power_of_2(nb_desc)) {
2575 PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Vector Rx "
2576 "preconditions - canceling the feature for "
2577 "the whole port[%d]",
2578 rxq->queue_id, rxq->port_id);
2579 adapter->rx_vec_allowed = false;
2581 ixgbe_rxq_vec_setup(rxq);
2583 dev->data->rx_queues[queue_idx] = rxq;
2585 ixgbe_reset_rx_queue(adapter, rxq);
2591 ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
2593 #define IXGBE_RXQ_SCAN_INTERVAL 4
2594 volatile union ixgbe_adv_rx_desc *rxdp;
2595 struct ixgbe_rx_queue *rxq;
2598 if (rx_queue_id >= dev->data->nb_rx_queues) {
2599 PMD_RX_LOG(ERR, "Invalid RX queue id=%d", rx_queue_id);
2603 rxq = dev->data->rx_queues[rx_queue_id];
2604 rxdp = &(rxq->rx_ring[rxq->rx_tail]);
2606 while ((desc < rxq->nb_rx_desc) &&
2607 (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD)) {
2608 desc += IXGBE_RXQ_SCAN_INTERVAL;
2609 rxdp += IXGBE_RXQ_SCAN_INTERVAL;
2610 if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
2611 rxdp = &(rxq->rx_ring[rxq->rx_tail +
2612 desc - rxq->nb_rx_desc]);
2619 ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
2621 volatile union ixgbe_adv_rx_desc *rxdp;
2622 struct ixgbe_rx_queue *rxq = rx_queue;
2625 if (unlikely(offset >= rxq->nb_rx_desc))
2627 desc = rxq->rx_tail + offset;
2628 if (desc >= rxq->nb_rx_desc)
2629 desc -= rxq->nb_rx_desc;
2631 rxdp = &rxq->rx_ring[desc];
2632 return !!(rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD);
2635 void __attribute__((cold))
2636 ixgbe_dev_clear_queues(struct rte_eth_dev *dev)
2639 struct ixgbe_adapter *adapter =
2640 (struct ixgbe_adapter *)dev->data->dev_private;
2642 PMD_INIT_FUNC_TRACE();
2644 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2645 struct ixgbe_tx_queue *txq = dev->data->tx_queues[i];
2647 txq->ops->release_mbufs(txq);
2648 txq->ops->reset(txq);
2652 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2653 struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
2655 ixgbe_rx_queue_release_mbufs(rxq);
2656 ixgbe_reset_rx_queue(adapter, rxq);
2661 /*********************************************************************
2663 * Device RX/TX init functions
2665 **********************************************************************/
2668 * Receive Side Scaling (RSS)
2669 * See section 7.1.2.8 in the following document:
2670 * "Intel 82599 10 GbE Controller Datasheet" - Revision 2.1 October 2009
2673 * The source and destination IP addresses of the IP header and the source
2674 * and destination ports of TCP/UDP headers, if any, of received packets are
2675 * hashed against a configurable random key to compute a 32-bit RSS hash result.
2676 * The seven (7) LSBs of the 32-bit hash result are used as an index into a
2677 * 128-entry redirection table (RETA). Each entry of the RETA provides a 3-bit
2678 * RSS output index which is used as the RX queue index where to store the
2680 * The following output is supplied in the RX write-back descriptor:
2681 * - 32-bit result of the Microsoft RSS hash function,
2682 * - 4-bit RSS type field.
2686 * RSS random key supplied in section 7.1.2.8.3 of the Intel 82599 datasheet.
2687 * Used as the default key.
2689 static uint8_t rss_intel_key[40] = {
2690 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
2691 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
2692 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
2693 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
2694 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
2698 ixgbe_rss_disable(struct rte_eth_dev *dev)
2700 struct ixgbe_hw *hw;
2703 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2704 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2705 mrqc &= ~IXGBE_MRQC_RSSEN;
2706 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2710 ixgbe_hw_rss_hash_set(struct ixgbe_hw *hw, struct rte_eth_rss_conf *rss_conf)
2718 hash_key = rss_conf->rss_key;
2719 if (hash_key != NULL) {
2720 /* Fill in RSS hash key */
2721 for (i = 0; i < 10; i++) {
2722 rss_key = hash_key[(i * 4)];
2723 rss_key |= hash_key[(i * 4) + 1] << 8;
2724 rss_key |= hash_key[(i * 4) + 2] << 16;
2725 rss_key |= hash_key[(i * 4) + 3] << 24;
2726 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, rss_key);
2730 /* Set configured hashing protocols in MRQC register */
2731 rss_hf = rss_conf->rss_hf;
2732 mrqc = IXGBE_MRQC_RSSEN; /* Enable RSS */
2733 if (rss_hf & ETH_RSS_IPV4)
2734 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
2735 if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
2736 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
2737 if (rss_hf & ETH_RSS_IPV6)
2738 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
2739 if (rss_hf & ETH_RSS_IPV6_EX)
2740 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX;
2741 if (rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
2742 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2743 if (rss_hf & ETH_RSS_IPV6_TCP_EX)
2744 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP;
2745 if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
2746 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
2747 if (rss_hf & ETH_RSS_NONFRAG_IPV6_UDP)
2748 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
2749 if (rss_hf & ETH_RSS_IPV6_UDP_EX)
2750 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP;
2751 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2755 ixgbe_dev_rss_hash_update(struct rte_eth_dev *dev,
2756 struct rte_eth_rss_conf *rss_conf)
2758 struct ixgbe_hw *hw;
2762 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2765 * Excerpt from section 7.1.2.8 Receive-Side Scaling (RSS):
2766 * "RSS enabling cannot be done dynamically while it must be
2767 * preceded by a software reset"
2768 * Before changing anything, first check that the update RSS operation
2769 * does not attempt to disable RSS, if RSS was enabled at
2770 * initialization time, or does not attempt to enable RSS, if RSS was
2771 * disabled at initialization time.
2773 rss_hf = rss_conf->rss_hf & IXGBE_RSS_OFFLOAD_ALL;
2774 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2775 if (!(mrqc & IXGBE_MRQC_RSSEN)) { /* RSS disabled */
2776 if (rss_hf != 0) /* Enable RSS */
2778 return 0; /* Nothing to do */
2781 if (rss_hf == 0) /* Disable RSS */
2783 ixgbe_hw_rss_hash_set(hw, rss_conf);
2788 ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
2789 struct rte_eth_rss_conf *rss_conf)
2791 struct ixgbe_hw *hw;
2798 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2799 hash_key = rss_conf->rss_key;
2800 if (hash_key != NULL) {
2801 /* Return RSS hash key */
2802 for (i = 0; i < 10; i++) {
2803 rss_key = IXGBE_READ_REG_ARRAY(hw, IXGBE_RSSRK(0), i);
2804 hash_key[(i * 4)] = rss_key & 0x000000FF;
2805 hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
2806 hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
2807 hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
2811 /* Get RSS functions configured in MRQC register */
2812 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2813 if ((mrqc & IXGBE_MRQC_RSSEN) == 0) { /* RSS is disabled */
2814 rss_conf->rss_hf = 0;
2818 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4)
2819 rss_hf |= ETH_RSS_IPV4;
2820 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_TCP)
2821 rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
2822 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6)
2823 rss_hf |= ETH_RSS_IPV6;
2824 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX)
2825 rss_hf |= ETH_RSS_IPV6_EX;
2826 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_TCP)
2827 rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
2828 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP)
2829 rss_hf |= ETH_RSS_IPV6_TCP_EX;
2830 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_UDP)
2831 rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP;
2832 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_UDP)
2833 rss_hf |= ETH_RSS_NONFRAG_IPV6_UDP;
2834 if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP)
2835 rss_hf |= ETH_RSS_IPV6_UDP_EX;
2836 rss_conf->rss_hf = rss_hf;
2841 ixgbe_rss_configure(struct rte_eth_dev *dev)
2843 struct rte_eth_rss_conf rss_conf;
2844 struct ixgbe_hw *hw;
2849 PMD_INIT_FUNC_TRACE();
2850 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2853 * Fill in redirection table
2854 * The byte-swap is needed because NIC registers are in
2855 * little-endian order.
2858 for (i = 0, j = 0; i < 128; i++, j++) {
2859 if (j == dev->data->nb_rx_queues)
2861 reta = (reta << 8) | j;
2863 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2),
2868 * Configure the RSS key and the RSS protocols used to compute
2869 * the RSS hash of input packets.
2871 rss_conf = dev->data->dev_conf.rx_adv_conf.rss_conf;
2872 if ((rss_conf.rss_hf & IXGBE_RSS_OFFLOAD_ALL) == 0) {
2873 ixgbe_rss_disable(dev);
2876 if (rss_conf.rss_key == NULL)
2877 rss_conf.rss_key = rss_intel_key; /* Default hash key */
2878 ixgbe_hw_rss_hash_set(hw, &rss_conf);
2881 #define NUM_VFTA_REGISTERS 128
2882 #define NIC_RX_BUFFER_SIZE 0x200
2885 ixgbe_vmdq_dcb_configure(struct rte_eth_dev *dev)
2887 struct rte_eth_vmdq_dcb_conf *cfg;
2888 struct ixgbe_hw *hw;
2889 enum rte_eth_nb_pools num_pools;
2890 uint32_t mrqc, vt_ctl, queue_mapping, vlanctrl;
2892 uint8_t nb_tcs; /* number of traffic classes */
2895 PMD_INIT_FUNC_TRACE();
2896 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2897 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2898 num_pools = cfg->nb_queue_pools;
2899 /* Check we have a valid number of pools */
2900 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS) {
2901 ixgbe_rss_disable(dev);
2904 /* 16 pools -> 8 traffic classes, 32 pools -> 4 traffic classes */
2905 nb_tcs = (uint8_t)(ETH_VMDQ_DCB_NUM_QUEUES / (int)num_pools);
2909 * split rx buffer up into sections, each for 1 traffic class
2911 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2912 for (i = 0 ; i < nb_tcs; i++) {
2913 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2914 rxpbsize &= (~(0x3FF << IXGBE_RXPBSIZE_SHIFT));
2915 /* clear 10 bits. */
2916 rxpbsize |= (pbsize << IXGBE_RXPBSIZE_SHIFT); /* set value */
2917 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2919 /* zero alloc all unused TCs */
2920 for (i = nb_tcs; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2921 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2922 rxpbsize &= (~( 0x3FF << IXGBE_RXPBSIZE_SHIFT ));
2923 /* clear 10 bits. */
2924 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2927 /* MRQC: enable vmdq and dcb */
2928 mrqc = ((num_pools == ETH_16_POOLS) ? \
2929 IXGBE_MRQC_VMDQRT8TCEN : IXGBE_MRQC_VMDQRT4TCEN );
2930 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2932 /* PFVTCTL: turn on virtualisation and set the default pool */
2933 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
2934 if (cfg->enable_default_pool) {
2935 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
2937 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
2940 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
2942 /* RTRUP2TC: mapping user priorities to traffic classes (TCs) */
2944 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++)
2946 * mapping is done with 3 bits per priority,
2947 * so shift by i*3 each time
2949 queue_mapping |= ((cfg->dcb_queue[i] & 0x07) << (i * 3));
2951 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, queue_mapping);
2953 /* RTRPCS: DCB related */
2954 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, IXGBE_RMCS_RRM);
2956 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2957 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2958 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2959 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2961 /* VFTA - enable all vlan filters */
2962 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2963 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2966 /* VFRE: pool enabling for receive - 16 or 32 */
2967 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), \
2968 num_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2971 * MPSAR - allow pools to read specific mac addresses
2972 * In this case, all pools should be able to read from mac addr 0
2974 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), 0xFFFFFFFF);
2975 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), 0xFFFFFFFF);
2977 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
2978 for (i = 0; i < cfg->nb_pool_maps; i++) {
2979 /* set vlan id in VF register and set the valid bit */
2980 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
2981 (cfg->pool_map[i].vlan_id & 0xFFF)));
2983 * Put the allowed pools in VFB reg. As we only have 16 or 32
2984 * pools, we only need to use the first half of the register
2987 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), cfg->pool_map[i].pools);
2992 * ixgbe_dcb_config_tx_hw_config - Configure general DCB TX parameters
2993 * @hw: pointer to hardware structure
2994 * @dcb_config: pointer to ixgbe_dcb_config structure
2997 ixgbe_dcb_tx_hw_config(struct ixgbe_hw *hw,
2998 struct ixgbe_dcb_config *dcb_config)
3003 PMD_INIT_FUNC_TRACE();
3004 if (hw->mac.type != ixgbe_mac_82598EB) {
3005 /* Disable the Tx desc arbiter so that MTQC can be changed */
3006 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3007 reg |= IXGBE_RTTDCS_ARBDIS;
3008 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3010 /* Enable DCB for Tx with 8 TCs */
3011 if (dcb_config->num_tcs.pg_tcs == 8) {
3012 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3015 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3017 if (dcb_config->vt_mode)
3018 reg |= IXGBE_MTQC_VT_ENA;
3019 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
3021 /* Disable drop for all queues */
3022 for (q = 0; q < 128; q++)
3023 IXGBE_WRITE_REG(hw, IXGBE_QDE,
3024 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
3026 /* Enable the Tx desc arbiter */
3027 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3028 reg &= ~IXGBE_RTTDCS_ARBDIS;
3029 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3031 /* Enable Security TX Buffer IFG for DCB */
3032 reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
3033 reg |= IXGBE_SECTX_DCB;
3034 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
3040 * ixgbe_vmdq_dcb_hw_tx_config - Configure general VMDQ+DCB TX parameters
3041 * @dev: pointer to rte_eth_dev structure
3042 * @dcb_config: pointer to ixgbe_dcb_config structure
3045 ixgbe_vmdq_dcb_hw_tx_config(struct rte_eth_dev *dev,
3046 struct ixgbe_dcb_config *dcb_config)
3048 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
3049 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
3050 struct ixgbe_hw *hw =
3051 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3053 PMD_INIT_FUNC_TRACE();
3054 if (hw->mac.type != ixgbe_mac_82598EB)
3055 /*PF VF Transmit Enable*/
3056 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0),
3057 vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
3059 /*Configure general DCB TX parameters*/
3060 ixgbe_dcb_tx_hw_config(hw,dcb_config);
3065 ixgbe_vmdq_dcb_rx_config(struct rte_eth_dev *dev,
3066 struct ixgbe_dcb_config *dcb_config)
3068 struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
3069 &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
3070 struct ixgbe_dcb_tc_config *tc;
3073 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
3074 if (vmdq_rx_conf->nb_queue_pools == ETH_16_POOLS ) {
3075 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
3076 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
3079 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
3080 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
3082 /* User Priority to Traffic Class mapping */
3083 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3084 j = vmdq_rx_conf->dcb_queue[i];
3085 tc = &dcb_config->tc_config[j];
3086 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
3092 ixgbe_dcb_vt_tx_config(struct rte_eth_dev *dev,
3093 struct ixgbe_dcb_config *dcb_config)
3095 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
3096 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
3097 struct ixgbe_dcb_tc_config *tc;
3100 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
3101 if (vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ) {
3102 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
3103 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
3106 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
3107 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
3110 /* User Priority to Traffic Class mapping */
3111 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3112 j = vmdq_tx_conf->dcb_queue[i];
3113 tc = &dcb_config->tc_config[j];
3114 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
3121 ixgbe_dcb_rx_config(struct rte_eth_dev *dev,
3122 struct ixgbe_dcb_config *dcb_config)
3124 struct rte_eth_dcb_rx_conf *rx_conf =
3125 &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
3126 struct ixgbe_dcb_tc_config *tc;
3129 dcb_config->num_tcs.pg_tcs = (uint8_t)rx_conf->nb_tcs;
3130 dcb_config->num_tcs.pfc_tcs = (uint8_t)rx_conf->nb_tcs;
3132 /* User Priority to Traffic Class mapping */
3133 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3134 j = rx_conf->dcb_queue[i];
3135 tc = &dcb_config->tc_config[j];
3136 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
3142 ixgbe_dcb_tx_config(struct rte_eth_dev *dev,
3143 struct ixgbe_dcb_config *dcb_config)
3145 struct rte_eth_dcb_tx_conf *tx_conf =
3146 &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
3147 struct ixgbe_dcb_tc_config *tc;
3150 dcb_config->num_tcs.pg_tcs = (uint8_t)tx_conf->nb_tcs;
3151 dcb_config->num_tcs.pfc_tcs = (uint8_t)tx_conf->nb_tcs;
3153 /* User Priority to Traffic Class mapping */
3154 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3155 j = tx_conf->dcb_queue[i];
3156 tc = &dcb_config->tc_config[j];
3157 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
3163 * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters
3164 * @hw: pointer to hardware structure
3165 * @dcb_config: pointer to ixgbe_dcb_config structure
3168 ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
3169 struct ixgbe_dcb_config *dcb_config)
3175 PMD_INIT_FUNC_TRACE();
3177 * Disable the arbiter before changing parameters
3178 * (always enable recycle mode; WSP)
3180 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS;
3181 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
3183 if (hw->mac.type != ixgbe_mac_82598EB) {
3184 reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
3185 if (dcb_config->num_tcs.pg_tcs == 4) {
3186 if (dcb_config->vt_mode)
3187 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3188 IXGBE_MRQC_VMDQRT4TCEN;
3190 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
3191 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3195 if (dcb_config->num_tcs.pg_tcs == 8) {
3196 if (dcb_config->vt_mode)
3197 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3198 IXGBE_MRQC_VMDQRT8TCEN;
3200 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
3201 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
3206 IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
3209 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
3210 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3211 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
3212 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
3214 /* VFTA - enable all vlan filters */
3215 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
3216 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
3220 * Configure Rx packet plane (recycle mode; WSP) and
3223 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC;
3224 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
3230 ixgbe_dcb_hw_arbite_rx_config(struct ixgbe_hw *hw, uint16_t *refill,
3231 uint16_t *max,uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
3233 switch (hw->mac.type) {
3234 case ixgbe_mac_82598EB:
3235 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
3237 case ixgbe_mac_82599EB:
3238 case ixgbe_mac_X540:
3239 case ixgbe_mac_X550:
3240 case ixgbe_mac_X550EM_x:
3241 ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id,
3250 ixgbe_dcb_hw_arbite_tx_config(struct ixgbe_hw *hw, uint16_t *refill, uint16_t *max,
3251 uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
3253 switch (hw->mac.type) {
3254 case ixgbe_mac_82598EB:
3255 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,tsa);
3256 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,tsa);
3258 case ixgbe_mac_82599EB:
3259 case ixgbe_mac_X540:
3260 case ixgbe_mac_X550:
3261 case ixgbe_mac_X550EM_x:
3262 ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,tsa);
3263 ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,tsa, map);
3270 #define DCB_RX_CONFIG 1
3271 #define DCB_TX_CONFIG 1
3272 #define DCB_TX_PB 1024
3274 * ixgbe_dcb_hw_configure - Enable DCB and configure
3275 * general DCB in VT mode and non-VT mode parameters
3276 * @dev: pointer to rte_eth_dev structure
3277 * @dcb_config: pointer to ixgbe_dcb_config structure
3280 ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
3281 struct ixgbe_dcb_config *dcb_config)
3284 uint8_t i,pfc_en,nb_tcs;
3286 uint8_t config_dcb_rx = 0;
3287 uint8_t config_dcb_tx = 0;
3288 uint8_t tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3289 uint8_t bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3290 uint16_t refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3291 uint16_t max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3292 uint8_t map[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
3293 struct ixgbe_dcb_tc_config *tc;
3294 uint32_t max_frame = dev->data->mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
3295 struct ixgbe_hw *hw =
3296 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3298 switch(dev->data->dev_conf.rxmode.mq_mode){
3299 case ETH_MQ_RX_VMDQ_DCB:
3300 dcb_config->vt_mode = true;
3301 if (hw->mac.type != ixgbe_mac_82598EB) {
3302 config_dcb_rx = DCB_RX_CONFIG;
3304 *get dcb and VT rx configuration parameters
3307 ixgbe_vmdq_dcb_rx_config(dev,dcb_config);
3308 /*Configure general VMDQ and DCB RX parameters*/
3309 ixgbe_vmdq_dcb_configure(dev);
3313 dcb_config->vt_mode = false;
3314 config_dcb_rx = DCB_RX_CONFIG;
3315 /* Get dcb TX configuration parameters from rte_eth_conf */
3316 ixgbe_dcb_rx_config(dev,dcb_config);
3317 /*Configure general DCB RX parameters*/
3318 ixgbe_dcb_rx_hw_config(hw, dcb_config);
3321 PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration");
3324 switch (dev->data->dev_conf.txmode.mq_mode) {
3325 case ETH_MQ_TX_VMDQ_DCB:
3326 dcb_config->vt_mode = true;
3327 config_dcb_tx = DCB_TX_CONFIG;
3328 /* get DCB and VT TX configuration parameters from rte_eth_conf */
3329 ixgbe_dcb_vt_tx_config(dev,dcb_config);
3330 /*Configure general VMDQ and DCB TX parameters*/
3331 ixgbe_vmdq_dcb_hw_tx_config(dev,dcb_config);
3335 dcb_config->vt_mode = false;
3336 config_dcb_tx = DCB_TX_CONFIG;
3337 /*get DCB TX configuration parameters from rte_eth_conf*/
3338 ixgbe_dcb_tx_config(dev,dcb_config);
3339 /*Configure general DCB TX parameters*/
3340 ixgbe_dcb_tx_hw_config(hw, dcb_config);
3343 PMD_INIT_LOG(ERR, "Incorrect DCB TX mode configuration");
3347 nb_tcs = dcb_config->num_tcs.pfc_tcs;
3349 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_RX_CONFIG, map);
3350 if(nb_tcs == ETH_4_TCS) {
3351 /* Avoid un-configured priority mapping to TC0 */
3353 uint8_t mask = 0xFF;
3354 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES - 4; i++)
3355 mask = (uint8_t)(mask & (~ (1 << map[i])));
3356 for (i = 0; mask && (i < IXGBE_DCB_MAX_TRAFFIC_CLASS); i++) {
3357 if ((mask & 0x1) && (j < ETH_DCB_NUM_USER_PRIORITIES))
3361 /* Re-configure 4 TCs BW */
3362 for (i = 0; i < nb_tcs; i++) {
3363 tc = &dcb_config->tc_config[i];
3364 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
3365 (uint8_t)(100 / nb_tcs);
3366 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
3367 (uint8_t)(100 / nb_tcs);
3369 for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
3370 tc = &dcb_config->tc_config[i];
3371 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0;
3372 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0;
3377 /* Set RX buffer size */
3378 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
3379 uint32_t rxpbsize = pbsize << IXGBE_RXPBSIZE_SHIFT;
3380 for (i = 0 ; i < nb_tcs; i++) {
3381 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
3383 /* zero alloc all unused TCs */
3384 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3385 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3389 /* Only support an equally distributed Tx packet buffer strategy. */
3390 uint32_t txpktsize = IXGBE_TXPBSIZE_MAX / nb_tcs;
3391 uint32_t txpbthresh = (txpktsize / DCB_TX_PB) - IXGBE_TXPKT_SIZE_MAX;
3392 for (i = 0; i < nb_tcs; i++) {
3393 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3394 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3396 /* Clear unused TCs, if any, to zero buffer size*/
3397 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
3398 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3399 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3403 /*Calculates traffic class credits*/
3404 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
3405 IXGBE_DCB_TX_CONFIG);
3406 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
3407 IXGBE_DCB_RX_CONFIG);
3410 /* Unpack CEE standard containers */
3411 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_RX_CONFIG, refill);
3412 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3413 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_RX_CONFIG, bwgid);
3414 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_RX_CONFIG, tsa);
3415 /* Configure PG(ETS) RX */
3416 ixgbe_dcb_hw_arbite_rx_config(hw,refill,max,bwgid,tsa,map);
3420 /* Unpack CEE standard containers */
3421 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
3422 ixgbe_dcb_unpack_max_cee(dcb_config, max);
3423 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
3424 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
3425 /* Configure PG(ETS) TX */
3426 ixgbe_dcb_hw_arbite_tx_config(hw,refill,max,bwgid,tsa,map);
3429 /*Configure queue statistics registers*/
3430 ixgbe_dcb_config_tc_stats_82599(hw, dcb_config);
3432 /* Check if the PFC is supported */
3433 if(dev->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) {
3434 pbsize = (uint16_t) (NIC_RX_BUFFER_SIZE / nb_tcs);
3435 for (i = 0; i < nb_tcs; i++) {
3437 * If the TC count is 8,and the default high_water is 48,
3438 * the low_water is 16 as default.
3440 hw->fc.high_water[i] = (pbsize * 3 ) / 4;
3441 hw->fc.low_water[i] = pbsize / 4;
3442 /* Enable pfc for this TC */
3443 tc = &dcb_config->tc_config[i];
3444 tc->pfc = ixgbe_dcb_pfc_enabled;
3446 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
3447 if(dcb_config->num_tcs.pfc_tcs == ETH_4_TCS)
3449 ret = ixgbe_dcb_config_pfc(hw, pfc_en, map);
3456 * ixgbe_configure_dcb - Configure DCB Hardware
3457 * @dev: pointer to rte_eth_dev
3459 void ixgbe_configure_dcb(struct rte_eth_dev *dev)
3461 struct ixgbe_dcb_config *dcb_cfg =
3462 IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
3463 struct rte_eth_conf *dev_conf = &(dev->data->dev_conf);
3465 PMD_INIT_FUNC_TRACE();
3467 /* check support mq_mode for DCB */
3468 if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) &&
3469 (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB))
3472 if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES)
3475 /** Configure DCB hardware **/
3476 ixgbe_dcb_hw_configure(dev,dcb_cfg);
3482 * VMDq only support for 10 GbE NIC.
3485 ixgbe_vmdq_rx_hw_configure(struct rte_eth_dev *dev)
3487 struct rte_eth_vmdq_rx_conf *cfg;
3488 struct ixgbe_hw *hw;
3489 enum rte_eth_nb_pools num_pools;
3490 uint32_t mrqc, vt_ctl, vlanctrl;
3494 PMD_INIT_FUNC_TRACE();
3495 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3496 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf;
3497 num_pools = cfg->nb_queue_pools;
3499 ixgbe_rss_disable(dev);
3501 /* MRQC: enable vmdq */
3502 mrqc = IXGBE_MRQC_VMDQEN;
3503 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3505 /* PFVTCTL: turn on virtualisation and set the default pool */
3506 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
3507 if (cfg->enable_default_pool)
3508 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
3510 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
3512 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
3514 for (i = 0; i < (int)num_pools; i++) {
3515 vmolr = ixgbe_convert_vm_rx_mask_to_val(cfg->rx_mode, vmolr);
3516 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
3519 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
3520 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3521 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
3522 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
3524 /* VFTA - enable all vlan filters */
3525 for (i = 0; i < NUM_VFTA_REGISTERS; i++)
3526 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), UINT32_MAX);
3528 /* VFRE: pool enabling for receive - 64 */
3529 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), UINT32_MAX);
3530 if (num_pools == ETH_64_POOLS)
3531 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), UINT32_MAX);
3534 * MPSAR - allow pools to read specific mac addresses
3535 * In this case, all pools should be able to read from mac addr 0
3537 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), UINT32_MAX);
3538 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), UINT32_MAX);
3540 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
3541 for (i = 0; i < cfg->nb_pool_maps; i++) {
3542 /* set vlan id in VF register and set the valid bit */
3543 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
3544 (cfg->pool_map[i].vlan_id & IXGBE_RXD_VLAN_ID_MASK)));
3546 * Put the allowed pools in VFB reg. As we only have 16 or 64
3547 * pools, we only need to use the first half of the register
3550 if (((cfg->pool_map[i].pools >> 32) & UINT32_MAX) == 0)
3551 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), \
3552 (cfg->pool_map[i].pools & UINT32_MAX));
3554 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((i*2+1)), \
3555 ((cfg->pool_map[i].pools >> 32) \
3560 /* PFDMA Tx General Switch Control Enables VMDQ loopback */
3561 if (cfg->enable_loop_back) {
3562 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
3563 for (i = 0; i < RTE_IXGBE_VMTXSW_REGISTER_COUNT; i++)
3564 IXGBE_WRITE_REG(hw, IXGBE_VMTXSW(i), UINT32_MAX);
3567 IXGBE_WRITE_FLUSH(hw);
3571 * ixgbe_dcb_config_tx_hw_config - Configure general VMDq TX parameters
3572 * @hw: pointer to hardware structure
3575 ixgbe_vmdq_tx_hw_configure(struct ixgbe_hw *hw)
3580 PMD_INIT_FUNC_TRACE();
3581 /*PF VF Transmit Enable*/
3582 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), UINT32_MAX);
3583 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), UINT32_MAX);
3585 /* Disable the Tx desc arbiter so that MTQC can be changed */
3586 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3587 reg |= IXGBE_RTTDCS_ARBDIS;
3588 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3590 reg = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3591 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
3593 /* Disable drop for all queues */
3594 for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++)
3595 IXGBE_WRITE_REG(hw, IXGBE_QDE,
3596 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
3598 /* Enable the Tx desc arbiter */
3599 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3600 reg &= ~IXGBE_RTTDCS_ARBDIS;
3601 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
3603 IXGBE_WRITE_FLUSH(hw);
3608 static int __attribute__((cold))
3609 ixgbe_alloc_rx_queue_mbufs(struct ixgbe_rx_queue *rxq)
3611 struct ixgbe_rx_entry *rxe = rxq->sw_ring;
3615 /* Initialize software ring entries */
3616 for (i = 0; i < rxq->nb_rx_desc; i++) {
3617 volatile union ixgbe_adv_rx_desc *rxd;
3618 struct rte_mbuf *mbuf = rte_rxmbuf_alloc(rxq->mb_pool);
3620 PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
3621 (unsigned) rxq->queue_id);
3625 rte_mbuf_refcnt_set(mbuf, 1);
3627 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
3629 mbuf->port = rxq->port_id;
3632 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
3633 rxd = &rxq->rx_ring[i];
3634 rxd->read.hdr_addr = dma_addr;
3635 rxd->read.pkt_addr = dma_addr;
3643 ixgbe_config_vf_rss(struct rte_eth_dev *dev)
3645 struct ixgbe_hw *hw;
3648 ixgbe_rss_configure(dev);
3650 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3652 /* MRQC: enable VF RSS */
3653 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
3654 mrqc &= ~IXGBE_MRQC_MRQE_MASK;
3655 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3657 mrqc |= IXGBE_MRQC_VMDQRSS64EN;
3661 mrqc |= IXGBE_MRQC_VMDQRSS32EN;
3665 PMD_INIT_LOG(ERR, "Invalid pool number in IOV mode with VMDQ RSS");
3669 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3675 ixgbe_config_vf_default(struct rte_eth_dev *dev)
3677 struct ixgbe_hw *hw =
3678 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3680 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3682 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3687 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3688 IXGBE_MRQC_VMDQRT4TCEN);
3692 IXGBE_WRITE_REG(hw, IXGBE_MRQC,
3693 IXGBE_MRQC_VMDQRT8TCEN);
3697 "invalid pool number in IOV mode");
3704 ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
3706 struct ixgbe_hw *hw =
3707 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3709 if (hw->mac.type == ixgbe_mac_82598EB)
3712 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3714 * SRIOV inactive scheme
3715 * any DCB/RSS w/o VMDq multi-queue setting
3717 switch (dev->data->dev_conf.rxmode.mq_mode) {
3719 ixgbe_rss_configure(dev);
3722 case ETH_MQ_RX_VMDQ_DCB:
3723 ixgbe_vmdq_dcb_configure(dev);
3726 case ETH_MQ_RX_VMDQ_ONLY:
3727 ixgbe_vmdq_rx_hw_configure(dev);
3730 case ETH_MQ_RX_NONE:
3731 /* if mq_mode is none, disable rss mode.*/
3732 default: ixgbe_rss_disable(dev);
3736 * SRIOV active scheme
3737 * Support RSS together with VMDq & SRIOV
3739 switch (dev->data->dev_conf.rxmode.mq_mode) {
3741 case ETH_MQ_RX_VMDQ_RSS:
3742 ixgbe_config_vf_rss(dev);
3745 /* FIXME if support DCB/RSS together with VMDq & SRIOV */
3746 case ETH_MQ_RX_VMDQ_DCB:
3747 case ETH_MQ_RX_VMDQ_DCB_RSS:
3749 "Could not support DCB with VMDq & SRIOV");
3752 ixgbe_config_vf_default(dev);
3761 ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev)
3763 struct ixgbe_hw *hw =
3764 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3768 if (hw->mac.type == ixgbe_mac_82598EB)
3771 /* disable arbiter before setting MTQC */
3772 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3773 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3774 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3776 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3778 * SRIOV inactive scheme
3779 * any DCB w/o VMDq multi-queue setting
3781 if (dev->data->dev_conf.txmode.mq_mode == ETH_MQ_TX_VMDQ_ONLY)
3782 ixgbe_vmdq_tx_hw_configure(hw);
3784 mtqc = IXGBE_MTQC_64Q_1PB;
3785 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3788 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3791 * SRIOV active scheme
3792 * FIXME if support DCB together with VMDq & SRIOV
3795 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3798 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_32VF;
3801 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_RT_ENA |
3805 mtqc = IXGBE_MTQC_64Q_1PB;
3806 PMD_INIT_LOG(ERR, "invalid pool number in IOV mode");
3808 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3811 /* re-enable arbiter */
3812 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3813 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3819 * ixgbe_get_rscctl_maxdesc - Calculate the RSCCTL[n].MAXDESC for PF
3821 * Return the RSCCTL[n].MAXDESC for 82599 and x540 PF devices according to the
3822 * spec rev. 3.0 chapter 8.2.3.8.13.
3824 * @pool Memory pool of the Rx queue
3826 static inline uint32_t
3827 ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
3829 struct rte_pktmbuf_pool_private *mp_priv = rte_mempool_get_priv(pool);
3831 /* MAXDESC * SRRCTL.BSIZEPKT must not exceed 64 KB minus one */
3834 (mp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM);
3837 return IXGBE_RSCCTL_MAXDESC_16;
3838 else if (maxdesc >= 8)
3839 return IXGBE_RSCCTL_MAXDESC_8;
3840 else if (maxdesc >= 4)
3841 return IXGBE_RSCCTL_MAXDESC_4;
3843 return IXGBE_RSCCTL_MAXDESC_1;
3847 * ixgbe_set_ivar - Setup the correct IVAR register for a particular MSIX
3850 * (Taken from FreeBSD tree)
3851 * (yes this is all very magic and confusing :)
3854 * @entry the register array entry
3855 * @vector the MSIX vector for this queue
3859 ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type)
3861 struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3864 vector |= IXGBE_IVAR_ALLOC_VAL;
3866 switch (hw->mac.type) {
3868 case ixgbe_mac_82598EB:
3870 entry = IXGBE_IVAR_OTHER_CAUSES_INDEX;
3872 entry += (type * 64);
3873 index = (entry >> 2) & 0x1F;
3874 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
3875 ivar &= ~(0xFF << (8 * (entry & 0x3)));
3876 ivar |= (vector << (8 * (entry & 0x3)));
3877 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
3880 case ixgbe_mac_82599EB:
3881 case ixgbe_mac_X540:
3882 if (type == -1) { /* MISC IVAR */
3883 index = (entry & 1) * 8;
3884 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR_MISC);
3885 ivar &= ~(0xFF << index);
3886 ivar |= (vector << index);
3887 IXGBE_WRITE_REG(hw, IXGBE_IVAR_MISC, ivar);
3888 } else { /* RX/TX IVARS */
3889 index = (16 * (entry & 1)) + (8 * type);
3890 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(entry >> 1));
3891 ivar &= ~(0xFF << index);
3892 ivar |= (vector << index);
3893 IXGBE_WRITE_REG(hw, IXGBE_IVAR(entry >> 1), ivar);
3903 void __attribute__((cold))
3904 ixgbe_set_rx_function(struct rte_eth_dev *dev)
3906 struct ixgbe_adapter *adapter =
3907 (struct ixgbe_adapter *)dev->data->dev_private;
3910 * In order to allow Vector Rx there are a few configuration
3911 * conditions to be met and Rx Bulk Allocation should be allowed.
3913 if (ixgbe_rx_vec_dev_conf_condition_check(dev) ||
3914 !adapter->rx_bulk_alloc_allowed) {
3915 PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet Vector Rx "
3916 "preconditions or RTE_IXGBE_INC_VECTOR is "
3918 dev->data->port_id);
3920 adapter->rx_vec_allowed = false;
3924 * Initialize the appropriate LRO callback.
3926 * If all queues satisfy the bulk allocation preconditions
3927 * (hw->rx_bulk_alloc_allowed is TRUE) then we may use bulk allocation.
3928 * Otherwise use a single allocation version.
3930 if (dev->data->lro) {
3931 if (adapter->rx_bulk_alloc_allowed) {
3932 PMD_INIT_LOG(INFO, "LRO is requested. Using a bulk "
3933 "allocation version");
3934 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
3936 PMD_INIT_LOG(INFO, "LRO is requested. Using a single "
3937 "allocation version");
3938 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
3940 } else if (dev->data->scattered_rx) {
3942 * Set the non-LRO scattered callback: there are Vector and
3943 * single allocation versions.
3945 if (adapter->rx_vec_allowed) {
3946 PMD_INIT_LOG(DEBUG, "Using Vector Scattered Rx "
3947 "callback (port=%d).",
3948 dev->data->port_id);
3950 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
3951 } else if (adapter->rx_bulk_alloc_allowed) {
3952 PMD_INIT_LOG(INFO, "Using a Scattered with bulk "
3953 "allocation callback (port=%d).",
3954 dev->data->port_id);
3955 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
3957 PMD_INIT_LOG(DEBUG, "Using Regualr (non-vector, "
3958 "single allocation) "
3959 "Scattered Rx callback "
3961 dev->data->port_id);
3963 dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
3966 * Below we set "simple" callbacks according to port/queues parameters.
3967 * If parameters allow we are going to choose between the following
3971 * - Single buffer allocation (the simplest one)
3973 } else if (adapter->rx_vec_allowed) {
3974 PMD_INIT_LOG(INFO, "Vector rx enabled, please make sure RX "
3975 "burst size no less than 32.");
3977 dev->rx_pkt_burst = ixgbe_recv_pkts_vec;
3978 } else if (adapter->rx_bulk_alloc_allowed) {
3979 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
3980 "satisfied. Rx Burst Bulk Alloc function "
3981 "will be used on port=%d.",
3982 dev->data->port_id);
3984 dev->rx_pkt_burst = ixgbe_recv_pkts_bulk_alloc;
3986 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not "
3987 "satisfied, or Scattered Rx is requested, "
3988 "or RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC "
3989 "is not enabled (port=%d).",
3990 dev->data->port_id);
3992 dev->rx_pkt_burst = ixgbe_recv_pkts;
3997 * ixgbe_set_rsc - configure RSC related port HW registers
3999 * Configures the port's RSC related registers according to the 4.6.7.2 chapter
4000 * of 82599 Spec (x540 configuration is virtually the same).
4004 * Returns 0 in case of success or a non-zero error code
4007 ixgbe_set_rsc(struct rte_eth_dev *dev)
4009 struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
4010 struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4011 struct rte_eth_dev_info dev_info = { 0 };
4012 bool rsc_capable = false;
4017 dev->dev_ops->dev_infos_get(dev, &dev_info);
4018 if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)
4021 if (!rsc_capable && rx_conf->enable_lro) {
4022 PMD_INIT_LOG(CRIT, "LRO is requested on HW that doesn't "
4027 /* RSC global configuration (chapter 4.6.7.2.1 of 82599 Spec) */
4029 if (!rx_conf->hw_strip_crc && rx_conf->enable_lro) {
4031 * According to chapter of 4.6.7.2.1 of the Spec Rev.
4032 * 3.0 RSC configuration requires HW CRC stripping being
4033 * enabled. If user requested both HW CRC stripping off
4034 * and RSC on - return an error.
4036 PMD_INIT_LOG(CRIT, "LRO can't be enabled when HW CRC "
4041 /* RFCTL configuration */
4043 uint32_t rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
4044 if (rx_conf->enable_lro)
4046 * Since NFS packets coalescing is not supported - clear
4047 * RFCTL.NFSW_DIS and RFCTL.NFSR_DIS when RSC is
4050 rfctl &= ~(IXGBE_RFCTL_RSC_DIS | IXGBE_RFCTL_NFSW_DIS |
4051 IXGBE_RFCTL_NFSR_DIS);
4053 rfctl |= IXGBE_RFCTL_RSC_DIS;
4055 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
4058 /* If LRO hasn't been requested - we are done here. */
4059 if (!rx_conf->enable_lro)
4062 /* Set RDRXCTL.RSCACKC bit */
4063 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
4064 rdrxctl |= IXGBE_RDRXCTL_RSCACKC;
4065 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
4067 /* Per-queue RSC configuration (chapter 4.6.7.2.2 of 82599 Spec) */
4068 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4069 struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
4071 IXGBE_READ_REG(hw, IXGBE_SRRCTL(rxq->reg_idx));
4073 IXGBE_READ_REG(hw, IXGBE_RSCCTL(rxq->reg_idx));
4075 IXGBE_READ_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx));
4077 IXGBE_READ_REG(hw, IXGBE_EITR(rxq->reg_idx));
4080 * ixgbe PMD doesn't support header-split at the moment.
4082 * Following the 4.6.7.2.1 chapter of the 82599/x540
4083 * Spec if RSC is enabled the SRRCTL[n].BSIZEHEADER
4084 * should be configured even if header split is not
4085 * enabled. We will configure it 128 bytes following the
4086 * recommendation in the spec.
4088 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
4089 srrctl |= (128 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4090 IXGBE_SRRCTL_BSIZEHDR_MASK;
4093 * TODO: Consider setting the Receive Descriptor Minimum
4094 * Threshold Size for an RSC case. This is not an obviously
4095 * beneficiary option but the one worth considering...
4098 rscctl |= IXGBE_RSCCTL_RSCEN;
4099 rscctl |= ixgbe_get_rscctl_maxdesc(rxq->mb_pool);
4100 psrtype |= IXGBE_PSRTYPE_TCPHDR;
4103 * RSC: Set ITR interval corresponding to 2K ints/s.
4105 * Full-sized RSC aggregations for a 10Gb/s link will
4106 * arrive at about 20K aggregation/s rate.
4108 * 2K inst/s rate will make only 10% of the
4109 * aggregations to be closed due to the interrupt timer
4110 * expiration for a streaming at wire-speed case.
4112 * For a sparse streaming case this setting will yield
4113 * at most 500us latency for a single RSC aggregation.
4115 eitr &= ~IXGBE_EITR_ITR_INT_MASK;
4116 eitr |= IXGBE_EITR_INTERVAL_US(500) | IXGBE_EITR_CNT_WDIS;
4118 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
4119 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(rxq->reg_idx), rscctl);
4120 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
4121 IXGBE_WRITE_REG(hw, IXGBE_EITR(rxq->reg_idx), eitr);
4124 * RSC requires the mapping of the queue to the
4127 ixgbe_set_ivar(dev, rxq->reg_idx, i, 0);
4132 PMD_INIT_LOG(INFO, "enabling LRO mode");
4138 * Initializes Receive Unit.
4140 int __attribute__((cold))
4141 ixgbe_dev_rx_init(struct rte_eth_dev *dev)
4143 struct ixgbe_hw *hw;
4144 struct ixgbe_rx_queue *rxq;
4155 struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
4158 PMD_INIT_FUNC_TRACE();
4159 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4162 * Make sure receives are disabled while setting
4163 * up the RX context (registers, descriptor rings, etc.).
4165 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4166 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
4168 /* Enable receipt of broadcasted frames */
4169 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4170 fctrl |= IXGBE_FCTRL_BAM;
4171 fctrl |= IXGBE_FCTRL_DPF;
4172 fctrl |= IXGBE_FCTRL_PMCF;
4173 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
4176 * Configure CRC stripping, if any.
4178 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
4179 if (rx_conf->hw_strip_crc)
4180 hlreg0 |= IXGBE_HLREG0_RXCRCSTRP;
4182 hlreg0 &= ~IXGBE_HLREG0_RXCRCSTRP;
4185 * Configure jumbo frame support, if any.
4187 if (rx_conf->jumbo_frame == 1) {
4188 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
4189 maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
4190 maxfrs &= 0x0000FFFF;
4191 maxfrs |= (rx_conf->max_rx_pkt_len << 16);
4192 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
4194 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
4197 * If loopback mode is configured for 82599, set LPBK bit.
4199 if (hw->mac.type == ixgbe_mac_82599EB &&
4200 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
4201 hlreg0 |= IXGBE_HLREG0_LPBK;
4203 hlreg0 &= ~IXGBE_HLREG0_LPBK;
4205 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
4207 /* Setup RX queues */
4208 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4209 rxq = dev->data->rx_queues[i];
4212 * Reset crc_len in case it was changed after queue setup by a
4213 * call to configure.
4215 rxq->crc_len = rx_conf->hw_strip_crc ? 0 : ETHER_CRC_LEN;
4217 /* Setup the Base and Length of the Rx Descriptor Rings */
4218 bus_addr = rxq->rx_ring_phys_addr;
4219 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(rxq->reg_idx),
4220 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4221 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(rxq->reg_idx),
4222 (uint32_t)(bus_addr >> 32));
4223 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(rxq->reg_idx),
4224 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
4225 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
4226 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), 0);
4228 /* Configure the SRRCTL register */
4229 #ifdef RTE_HEADER_SPLIT_ENABLE
4231 * Configure Header Split
4233 if (rx_conf->header_split) {
4234 if (hw->mac.type == ixgbe_mac_82599EB) {
4235 /* Must setup the PSRTYPE register */
4237 psrtype = IXGBE_PSRTYPE_TCPHDR |
4238 IXGBE_PSRTYPE_UDPHDR |
4239 IXGBE_PSRTYPE_IPV4HDR |
4240 IXGBE_PSRTYPE_IPV6HDR;
4241 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
4243 srrctl = ((rx_conf->split_hdr_size <<
4244 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4245 IXGBE_SRRCTL_BSIZEHDR_MASK);
4246 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
4249 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
4251 /* Set if packets are dropped when no descriptors available */
4253 srrctl |= IXGBE_SRRCTL_DROP_EN;
4256 * Configure the RX buffer size in the BSIZEPACKET field of
4257 * the SRRCTL register of the queue.
4258 * The value is in 1 KB resolution. Valid values can be from
4261 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
4262 RTE_PKTMBUF_HEADROOM);
4263 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
4264 IXGBE_SRRCTL_BSIZEPKT_MASK);
4266 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
4268 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
4269 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
4271 /* It adds dual VLAN length for supporting dual VLAN */
4272 if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
4273 2 * IXGBE_VLAN_TAG_SIZE > buf_size)
4274 dev->data->scattered_rx = 1;
4277 if (rx_conf->enable_scatter)
4278 dev->data->scattered_rx = 1;
4281 * Device configured with multiple RX queues.
4283 ixgbe_dev_mq_rx_configure(dev);
4286 * Setup the Checksum Register.
4287 * Disable Full-Packet Checksum which is mutually exclusive with RSS.
4288 * Enable IP/L4 checkum computation by hardware if requested to do so.
4290 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
4291 rxcsum |= IXGBE_RXCSUM_PCSD;
4292 if (rx_conf->hw_ip_checksum)
4293 rxcsum |= IXGBE_RXCSUM_IPPCSE;
4295 rxcsum &= ~IXGBE_RXCSUM_IPPCSE;
4297 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
4299 if (hw->mac.type == ixgbe_mac_82599EB ||
4300 hw->mac.type == ixgbe_mac_X540) {
4301 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
4302 if (rx_conf->hw_strip_crc)
4303 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
4305 rdrxctl &= ~IXGBE_RDRXCTL_CRCSTRIP;
4306 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
4307 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
4310 rc = ixgbe_set_rsc(dev);
4314 ixgbe_set_rx_function(dev);
4320 * Initializes Transmit Unit.
4322 void __attribute__((cold))
4323 ixgbe_dev_tx_init(struct rte_eth_dev *dev)
4325 struct ixgbe_hw *hw;
4326 struct ixgbe_tx_queue *txq;
4332 PMD_INIT_FUNC_TRACE();
4333 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4335 /* Enable TX CRC (checksum offload requirement) and hw padding
4336 * (TSO requirement) */
4337 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
4338 hlreg0 |= (IXGBE_HLREG0_TXCRCEN | IXGBE_HLREG0_TXPADEN);
4339 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
4341 /* Setup the Base and Length of the Tx Descriptor Rings */
4342 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4343 txq = dev->data->tx_queues[i];
4345 bus_addr = txq->tx_ring_phys_addr;
4346 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(txq->reg_idx),
4347 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4348 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(txq->reg_idx),
4349 (uint32_t)(bus_addr >> 32));
4350 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(txq->reg_idx),
4351 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
4352 /* Setup the HW Tx Head and TX Tail descriptor pointers */
4353 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
4354 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
4357 * Disable Tx Head Writeback RO bit, since this hoses
4358 * bookkeeping if things aren't delivered in order.
4360 switch (hw->mac.type) {
4361 case ixgbe_mac_82598EB:
4362 txctrl = IXGBE_READ_REG(hw,
4363 IXGBE_DCA_TXCTRL(txq->reg_idx));
4364 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4365 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(txq->reg_idx),
4369 case ixgbe_mac_82599EB:
4370 case ixgbe_mac_X540:
4371 case ixgbe_mac_X550:
4372 case ixgbe_mac_X550EM_x:
4374 txctrl = IXGBE_READ_REG(hw,
4375 IXGBE_DCA_TXCTRL_82599(txq->reg_idx));
4376 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4377 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(txq->reg_idx),
4383 /* Device configured with multiple TX queues. */
4384 ixgbe_dev_mq_tx_configure(dev);
4388 * Set up link for 82599 loopback mode Tx->Rx.
4390 static inline void __attribute__((cold))
4391 ixgbe_setup_loopback_link_82599(struct ixgbe_hw *hw)
4393 PMD_INIT_FUNC_TRACE();
4395 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
4396 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM) !=
4398 PMD_INIT_LOG(ERR, "Could not enable loopback mode");
4407 IXGBE_AUTOC_LMS_10G_LINK_NO_AN | IXGBE_AUTOC_FLU);
4408 ixgbe_reset_pipeline_82599(hw);
4410 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
4416 * Start Transmit and Receive Units.
4418 int __attribute__((cold))
4419 ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
4421 struct ixgbe_hw *hw;
4422 struct ixgbe_tx_queue *txq;
4423 struct ixgbe_rx_queue *rxq;
4430 PMD_INIT_FUNC_TRACE();
4431 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4433 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4434 txq = dev->data->tx_queues[i];
4435 /* Setup Transmit Threshold Registers */
4436 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4437 txdctl |= txq->pthresh & 0x7F;
4438 txdctl |= ((txq->hthresh & 0x7F) << 8);
4439 txdctl |= ((txq->wthresh & 0x7F) << 16);
4440 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4443 if (hw->mac.type != ixgbe_mac_82598EB) {
4444 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
4445 dmatxctl |= IXGBE_DMATXCTL_TE;
4446 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
4449 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4450 txq = dev->data->tx_queues[i];
4451 if (!txq->tx_deferred_start) {
4452 ret = ixgbe_dev_tx_queue_start(dev, i);
4458 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4459 rxq = dev->data->rx_queues[i];
4460 if (!rxq->rx_deferred_start) {
4461 ret = ixgbe_dev_rx_queue_start(dev, i);
4467 /* Enable Receive engine */
4468 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4469 if (hw->mac.type == ixgbe_mac_82598EB)
4470 rxctrl |= IXGBE_RXCTRL_DMBYPS;
4471 rxctrl |= IXGBE_RXCTRL_RXEN;
4472 hw->mac.ops.enable_rx_dma(hw, rxctrl);
4474 /* If loopback mode is enabled for 82599, set up the link accordingly */
4475 if (hw->mac.type == ixgbe_mac_82599EB &&
4476 dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX)
4477 ixgbe_setup_loopback_link_82599(hw);
4483 * Start Receive Units for specified queue.
4485 int __attribute__((cold))
4486 ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
4488 struct ixgbe_hw *hw;
4489 struct ixgbe_rx_queue *rxq;
4493 PMD_INIT_FUNC_TRACE();
4494 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4496 if (rx_queue_id < dev->data->nb_rx_queues) {
4497 rxq = dev->data->rx_queues[rx_queue_id];
4499 /* Allocate buffers for descriptor rings */
4500 if (ixgbe_alloc_rx_queue_mbufs(rxq) != 0) {
4501 PMD_INIT_LOG(ERR, "Could not alloc mbuf for queue:%d",
4505 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4506 rxdctl |= IXGBE_RXDCTL_ENABLE;
4507 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
4509 /* Wait until RX Enable ready */
4510 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4513 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4514 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4516 PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d",
4519 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
4520 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1);
4528 * Stop Receive Units for specified queue.
4530 int __attribute__((cold))
4531 ixgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
4533 struct ixgbe_hw *hw;
4534 struct ixgbe_adapter *adapter =
4535 (struct ixgbe_adapter *)dev->data->dev_private;
4536 struct ixgbe_rx_queue *rxq;
4540 PMD_INIT_FUNC_TRACE();
4541 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4543 if (rx_queue_id < dev->data->nb_rx_queues) {
4544 rxq = dev->data->rx_queues[rx_queue_id];
4546 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4547 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
4548 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
4550 /* Wait until RX Enable ready */
4551 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4554 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
4555 } while (--poll_ms && (rxdctl | IXGBE_RXDCTL_ENABLE));
4557 PMD_INIT_LOG(ERR, "Could not disable Rx Queue %d",
4560 rte_delay_us(RTE_IXGBE_WAIT_100_US);
4562 ixgbe_rx_queue_release_mbufs(rxq);
4563 ixgbe_reset_rx_queue(adapter, rxq);
4572 * Start Transmit Units for specified queue.
4574 int __attribute__((cold))
4575 ixgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
4577 struct ixgbe_hw *hw;
4578 struct ixgbe_tx_queue *txq;
4582 PMD_INIT_FUNC_TRACE();
4583 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4585 if (tx_queue_id < dev->data->nb_tx_queues) {
4586 txq = dev->data->tx_queues[tx_queue_id];
4587 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4588 txdctl |= IXGBE_TXDCTL_ENABLE;
4589 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4591 /* Wait until TX Enable ready */
4592 if (hw->mac.type == ixgbe_mac_82599EB) {
4593 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4596 txdctl = IXGBE_READ_REG(hw,
4597 IXGBE_TXDCTL(txq->reg_idx));
4598 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
4600 PMD_INIT_LOG(ERR, "Could not enable "
4601 "Tx Queue %d", tx_queue_id);
4604 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
4605 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
4613 * Stop Transmit Units for specified queue.
4615 int __attribute__((cold))
4616 ixgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
4618 struct ixgbe_hw *hw;
4619 struct ixgbe_tx_queue *txq;
4621 uint32_t txtdh, txtdt;
4624 PMD_INIT_FUNC_TRACE();
4625 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4627 if (tx_queue_id < dev->data->nb_tx_queues) {
4628 txq = dev->data->tx_queues[tx_queue_id];
4630 /* Wait until TX queue is empty */
4631 if (hw->mac.type == ixgbe_mac_82599EB) {
4632 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4634 rte_delay_us(RTE_IXGBE_WAIT_100_US);
4635 txtdh = IXGBE_READ_REG(hw,
4636 IXGBE_TDH(txq->reg_idx));
4637 txtdt = IXGBE_READ_REG(hw,
4638 IXGBE_TDT(txq->reg_idx));
4639 } while (--poll_ms && (txtdh != txtdt));
4641 PMD_INIT_LOG(ERR, "Tx Queue %d is not empty "
4642 "when stopping.", tx_queue_id);
4645 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
4646 txdctl &= ~IXGBE_TXDCTL_ENABLE;
4647 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
4649 /* Wait until TX Enable ready */
4650 if (hw->mac.type == ixgbe_mac_82599EB) {
4651 poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS;
4654 txdctl = IXGBE_READ_REG(hw,
4655 IXGBE_TXDCTL(txq->reg_idx));
4656 } while (--poll_ms && (txdctl | IXGBE_TXDCTL_ENABLE));
4658 PMD_INIT_LOG(ERR, "Could not disable "
4659 "Tx Queue %d", tx_queue_id);
4662 if (txq->ops != NULL) {
4663 txq->ops->release_mbufs(txq);
4664 txq->ops->reset(txq);
4673 * [VF] Initializes Receive Unit.
4675 int __attribute__((cold))
4676 ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
4678 struct ixgbe_hw *hw;
4679 struct ixgbe_rx_queue *rxq;
4681 uint32_t srrctl, psrtype = 0;
4686 PMD_INIT_FUNC_TRACE();
4687 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4689 if (rte_is_power_of_2(dev->data->nb_rx_queues) == 0) {
4690 PMD_INIT_LOG(ERR, "The number of Rx queue invalid, "
4691 "it should be power of 2");
4695 if (dev->data->nb_rx_queues > hw->mac.max_rx_queues) {
4696 PMD_INIT_LOG(ERR, "The number of Rx queue invalid, "
4697 "it should be equal to or less than %d",
4698 hw->mac.max_rx_queues);
4703 * When the VF driver issues a IXGBE_VF_RESET request, the PF driver
4704 * disables the VF receipt of packets if the PF MTU is > 1500.
4705 * This is done to deal with 82599 limitations that imposes
4706 * the PF and all VFs to share the same MTU.
4707 * Then, the PF driver enables again the VF receipt of packet when
4708 * the VF driver issues a IXGBE_VF_SET_LPE request.
4709 * In the meantime, the VF device cannot be used, even if the VF driver
4710 * and the Guest VM network stack are ready to accept packets with a
4711 * size up to the PF MTU.
4712 * As a work-around to this PF behaviour, force the call to
4713 * ixgbevf_rlpml_set_vf even if jumbo frames are not used. This way,
4714 * VF packets received can work in all cases.
4716 ixgbevf_rlpml_set_vf(hw,
4717 (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len);
4719 /* Setup RX queues */
4720 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4721 rxq = dev->data->rx_queues[i];
4723 /* Allocate buffers for descriptor rings */
4724 ret = ixgbe_alloc_rx_queue_mbufs(rxq);
4728 /* Setup the Base and Length of the Rx Descriptor Rings */
4729 bus_addr = rxq->rx_ring_phys_addr;
4731 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i),
4732 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4733 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i),
4734 (uint32_t)(bus_addr >> 32));
4735 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i),
4736 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
4737 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
4738 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
4741 /* Configure the SRRCTL register */
4742 #ifdef RTE_HEADER_SPLIT_ENABLE
4744 * Configure Header Split
4746 if (dev->data->dev_conf.rxmode.header_split) {
4747 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
4748 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
4749 IXGBE_SRRCTL_BSIZEHDR_MASK);
4750 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
4753 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
4755 /* Set if packets are dropped when no descriptors available */
4757 srrctl |= IXGBE_SRRCTL_DROP_EN;
4760 * Configure the RX buffer size in the BSIZEPACKET field of
4761 * the SRRCTL register of the queue.
4762 * The value is in 1 KB resolution. Valid values can be from
4765 buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
4766 RTE_PKTMBUF_HEADROOM);
4767 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
4768 IXGBE_SRRCTL_BSIZEPKT_MASK);
4771 * VF modification to write virtual function SRRCTL register
4773 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), srrctl);
4775 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
4776 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
4778 if (dev->data->dev_conf.rxmode.enable_scatter ||
4779 /* It adds dual VLAN length for supporting dual VLAN */
4780 (dev->data->dev_conf.rxmode.max_rx_pkt_len +
4781 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
4782 if (!dev->data->scattered_rx)
4783 PMD_INIT_LOG(DEBUG, "forcing scatter mode");
4784 dev->data->scattered_rx = 1;
4788 #ifdef RTE_HEADER_SPLIT_ENABLE
4789 if (dev->data->dev_conf.rxmode.header_split)
4790 /* Must setup the PSRTYPE register */
4791 psrtype = IXGBE_PSRTYPE_TCPHDR |
4792 IXGBE_PSRTYPE_UDPHDR |
4793 IXGBE_PSRTYPE_IPV4HDR |
4794 IXGBE_PSRTYPE_IPV6HDR;
4797 /* Set RQPL for VF RSS according to max Rx queue */
4798 psrtype |= (dev->data->nb_rx_queues >> 1) <<
4799 IXGBE_PSRTYPE_RQPL_SHIFT;
4800 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
4802 ixgbe_set_rx_function(dev);
4808 * [VF] Initializes Transmit Unit.
4810 void __attribute__((cold))
4811 ixgbevf_dev_tx_init(struct rte_eth_dev *dev)
4813 struct ixgbe_hw *hw;
4814 struct ixgbe_tx_queue *txq;
4819 PMD_INIT_FUNC_TRACE();
4820 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4822 /* Setup the Base and Length of the Tx Descriptor Rings */
4823 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4824 txq = dev->data->tx_queues[i];
4825 bus_addr = txq->tx_ring_phys_addr;
4826 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i),
4827 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
4828 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i),
4829 (uint32_t)(bus_addr >> 32));
4830 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i),
4831 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
4832 /* Setup the HW Tx Head and TX Tail descriptor pointers */
4833 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
4834 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
4837 * Disable Tx Head Writeback RO bit, since this hoses
4838 * bookkeeping if things aren't delivered in order.
4840 txctrl = IXGBE_READ_REG(hw,
4841 IXGBE_VFDCA_TXCTRL(i));
4842 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
4843 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i),
4849 * [VF] Start Transmit and Receive Units.
4851 void __attribute__((cold))
4852 ixgbevf_dev_rxtx_start(struct rte_eth_dev *dev)
4854 struct ixgbe_hw *hw;
4855 struct ixgbe_tx_queue *txq;
4856 struct ixgbe_rx_queue *rxq;
4862 PMD_INIT_FUNC_TRACE();
4863 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
4865 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4866 txq = dev->data->tx_queues[i];
4867 /* Setup Transmit Threshold Registers */
4868 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4869 txdctl |= txq->pthresh & 0x7F;
4870 txdctl |= ((txq->hthresh & 0x7F) << 8);
4871 txdctl |= ((txq->wthresh & 0x7F) << 16);
4872 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4875 for (i = 0; i < dev->data->nb_tx_queues; i++) {
4877 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4878 txdctl |= IXGBE_TXDCTL_ENABLE;
4879 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
4882 /* Wait until TX Enable ready */
4885 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
4886 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
4888 PMD_INIT_LOG(ERR, "Could not enable Tx Queue %d", i);
4890 for (i = 0; i < dev->data->nb_rx_queues; i++) {
4892 rxq = dev->data->rx_queues[i];
4894 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4895 rxdctl |= IXGBE_RXDCTL_ENABLE;
4896 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl);
4898 /* Wait until RX Enable ready */
4902 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
4903 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
4905 PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d", i);
4907 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), rxq->nb_rx_desc - 1);
4912 /* Stubs needed for linkage when CONFIG_RTE_IXGBE_INC_VECTOR is set to 'n' */
4913 int __attribute__((weak))
4914 ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
4919 uint16_t __attribute__((weak))
4920 ixgbe_recv_pkts_vec(
4921 void __rte_unused *rx_queue,
4922 struct rte_mbuf __rte_unused **rx_pkts,
4923 uint16_t __rte_unused nb_pkts)
4928 uint16_t __attribute__((weak))
4929 ixgbe_recv_scattered_pkts_vec(
4930 void __rte_unused *rx_queue,
4931 struct rte_mbuf __rte_unused **rx_pkts,
4932 uint16_t __rte_unused nb_pkts)
4937 int __attribute__((weak))
4938 ixgbe_rxq_vec_setup(struct ixgbe_rx_queue __rte_unused *rxq)