4 * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
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34 #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>
56 #include <rte_tailq.h>
58 #include <rte_per_lcore.h>
59 #include <rte_lcore.h>
60 #include <rte_atomic.h>
61 #include <rte_branch_prediction.h>
63 #include <rte_mempool.h>
64 #include <rte_malloc.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
68 #include <rte_prefetch.h>
72 #include <rte_string_fns.h>
73 #include <rte_errno.h>
75 #include "ixgbe_logs.h"
76 #include "ixgbe/ixgbe_api.h"
77 #include "ixgbe/ixgbe_vf.h"
78 #include "ixgbe_ethdev.h"
79 #include "ixgbe/ixgbe_dcb.h"
82 #define RTE_PMD_IXGBE_TX_MAX_BURST 32
84 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
85 #define RTE_PMD_IXGBE_RX_MAX_BURST 32
88 static inline struct rte_mbuf *
89 rte_rxmbuf_alloc(struct rte_mempool *mp)
93 m = __rte_mbuf_raw_alloc(mp);
94 __rte_mbuf_sanity_check_raw(m, RTE_MBUF_PKT, 0);
98 #define RTE_MBUF_DATA_DMA_ADDR(mb) \
99 (uint64_t) ((mb)->buf_physaddr + (uint64_t)((char *)((mb)->pkt.data) - \
100 (char *)(mb)->buf_addr))
102 #define RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mb) \
103 (uint64_t) ((mb)->buf_physaddr + RTE_PKTMBUF_HEADROOM)
106 * Structure associated with each descriptor of the RX ring of a RX queue.
108 struct igb_rx_entry {
109 struct rte_mbuf *mbuf; /**< mbuf associated with RX descriptor. */
113 * Structure associated with each descriptor of the TX ring of a TX queue.
115 struct igb_tx_entry {
116 struct rte_mbuf *mbuf; /**< mbuf associated with TX desc, if any. */
117 uint16_t next_id; /**< Index of next descriptor in ring. */
118 uint16_t last_id; /**< Index of last scattered descriptor. */
122 * Structure associated with each RX queue.
124 struct igb_rx_queue {
125 struct rte_mempool *mb_pool; /**< mbuf pool to populate RX ring. */
126 volatile union ixgbe_adv_rx_desc *rx_ring; /**< RX ring virtual address. */
127 uint64_t rx_ring_phys_addr; /**< RX ring DMA address. */
128 volatile uint32_t *rdt_reg_addr; /**< RDT register address. */
129 volatile uint32_t *rdh_reg_addr; /**< RDH register address. */
130 struct igb_rx_entry *sw_ring; /**< address of RX software ring. */
131 struct rte_mbuf *pkt_first_seg; /**< First segment of current packet. */
132 struct rte_mbuf *pkt_last_seg; /**< Last segment of current packet. */
133 uint16_t nb_rx_desc; /**< number of RX descriptors. */
134 uint16_t rx_tail; /**< current value of RDT register. */
135 uint16_t nb_rx_hold; /**< number of held free RX desc. */
136 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
137 uint16_t rx_nb_avail; /**< nr of staged pkts ready to ret to app */
138 uint16_t rx_next_avail; /**< idx of next staged pkt to ret to app */
139 uint16_t rx_free_trigger; /**< triggers rx buffer allocation */
141 uint16_t rx_free_thresh; /**< max free RX desc to hold. */
142 uint16_t queue_id; /**< RX queue index. */
143 uint16_t reg_idx; /**< RX queue register index. */
144 uint8_t port_id; /**< Device port identifier. */
145 uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */
146 uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
147 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
148 /** need to alloc dummy mbuf, for wraparound when scanning hw ring */
149 struct rte_mbuf fake_mbuf;
150 /** hold packets to return to application */
151 struct rte_mbuf *rx_stage[RTE_PMD_IXGBE_RX_MAX_BURST*2];
156 * IXGBE CTX Constants
158 enum ixgbe_advctx_num {
159 IXGBE_CTX_0 = 0, /**< CTX0 */
160 IXGBE_CTX_1 = 1, /**< CTX1 */
161 IXGBE_CTX_NUM = 2, /**< CTX NUMBER */
165 * Structure to check if new context need be built
168 struct ixgbe_advctx_info {
169 uint16_t flags; /**< ol_flags for context build. */
170 uint32_t cmp_mask; /**< compare mask for vlan_macip_lens */
171 union rte_vlan_macip vlan_macip_lens; /**< vlan, mac ip length. */
175 * Structure associated with each TX queue.
177 struct igb_tx_queue {
178 /** TX ring virtual address. */
179 volatile union ixgbe_adv_tx_desc *tx_ring;
180 uint64_t tx_ring_phys_addr; /**< TX ring DMA address. */
181 struct igb_tx_entry *sw_ring; /**< virtual address of SW ring. */
182 volatile uint32_t *tdt_reg_addr; /**< Address of TDT register. */
183 uint16_t nb_tx_desc; /**< number of TX descriptors. */
184 uint16_t tx_tail; /**< current value of TDT reg. */
185 uint16_t tx_free_thresh;/**< minimum TX before freeing. */
186 /** Number of TX descriptors to use before RS bit is set. */
187 uint16_t tx_rs_thresh;
188 /** Number of TX descriptors used since RS bit was set. */
190 /** Index to last TX descriptor to have been cleaned. */
191 uint16_t last_desc_cleaned;
192 /** Total number of TX descriptors ready to be allocated. */
194 uint16_t tx_next_dd; /**< next desc to scan for DD bit */
195 uint16_t tx_next_rs; /**< next desc to set RS bit */
196 uint16_t queue_id; /**< TX queue index. */
197 uint16_t reg_idx; /**< TX queue register index. */
198 uint8_t port_id; /**< Device port identifier. */
199 uint8_t pthresh; /**< Prefetch threshold register. */
200 uint8_t hthresh; /**< Host threshold register. */
201 uint8_t wthresh; /**< Write-back threshold reg. */
202 uint32_t txq_flags; /**< Holds flags for this TXq */
203 uint32_t ctx_curr; /**< Hardware context states. */
204 /** Hardware context0 history. */
205 struct ixgbe_advctx_info ctx_cache[IXGBE_CTX_NUM];
210 #define RTE_PMD_USE_PREFETCH
213 #ifdef RTE_PMD_USE_PREFETCH
215 * Prefetch a cache line into all cache levels.
217 #define rte_ixgbe_prefetch(p) rte_prefetch0(p)
219 #define rte_ixgbe_prefetch(p) do {} while(0)
222 #ifdef RTE_PMD_PACKET_PREFETCH
223 #define rte_packet_prefetch(p) rte_prefetch1(p)
225 #define rte_packet_prefetch(p) do {} while(0)
228 /*********************************************************************
232 **********************************************************************/
235 * The "simple" TX queue functions require that the following
236 * flags are set when the TX queue is configured:
237 * - ETH_TXQ_FLAGS_NOMULTSEGS
238 * - ETH_TXQ_FLAGS_NOVLANOFFL
239 * - ETH_TXQ_FLAGS_NOXSUMSCTP
240 * - ETH_TXQ_FLAGS_NOXSUMUDP
241 * - ETH_TXQ_FLAGS_NOXSUMTCP
242 * and that the RS bit threshold (tx_rs_thresh) is at least equal to
243 * RTE_PMD_IXGBE_TX_MAX_BURST.
245 #define IXGBE_SIMPLE_FLAGS ((uint32_t)ETH_TXQ_FLAGS_NOMULTSEGS | \
246 ETH_TXQ_FLAGS_NOOFFLOADS)
249 * Check for descriptors with their DD bit set and free mbufs.
250 * Return the total number of buffers freed.
252 static inline int __attribute__((always_inline))
253 ixgbe_tx_free_bufs(struct igb_tx_queue *txq)
255 struct igb_tx_entry *txep;
259 /* check DD bit on threshold descriptor */
260 status = txq->tx_ring[txq->tx_next_dd].wb.status;
261 if (! (status & IXGBE_ADVTXD_STAT_DD))
265 * first buffer to free from S/W ring is at index
266 * tx_next_dd - (tx_rs_thresh-1)
268 txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
270 /* prefetch the mbufs that are about to be freed */
271 for (i = 0; i < txq->tx_rs_thresh; ++i)
272 rte_prefetch0((txep + i)->mbuf);
274 /* free buffers one at a time */
275 if ((txq->txq_flags & (uint32_t)ETH_TXQ_FLAGS_NOREFCOUNT) != 0) {
276 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
277 rte_mempool_put(txep->mbuf->pool, txep->mbuf);
281 for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
282 rte_pktmbuf_free_seg(txep->mbuf);
287 /* buffers were freed, update counters */
288 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
289 txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
290 if (txq->tx_next_dd >= txq->nb_tx_desc)
291 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
293 return txq->tx_rs_thresh;
297 * Populate descriptors with the following info:
298 * 1.) buffer_addr = phys_addr + headroom
299 * 2.) cmd_type_len = DCMD_DTYP_FLAGS | pkt_len
300 * 3.) olinfo_status = pkt_len << PAYLEN_SHIFT
303 /* Defines for Tx descriptor */
304 #define DCMD_DTYP_FLAGS (IXGBE_ADVTXD_DTYP_DATA |\
305 IXGBE_ADVTXD_DCMD_IFCS |\
306 IXGBE_ADVTXD_DCMD_DEXT |\
307 IXGBE_ADVTXD_DCMD_EOP)
309 /* Populate 4 descriptors with data from 4 mbufs */
311 tx4(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
313 uint64_t buf_dma_addr;
317 for (i = 0; i < 4; ++i, ++txdp, ++pkts) {
318 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
319 pkt_len = (*pkts)->pkt.data_len;
321 /* write data to descriptor */
322 txdp->read.buffer_addr = buf_dma_addr;
323 txdp->read.cmd_type_len =
324 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
325 txdp->read.olinfo_status =
326 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
330 /* Populate 1 descriptor with data from 1 mbuf */
332 tx1(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts)
334 uint64_t buf_dma_addr;
337 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(*pkts);
338 pkt_len = (*pkts)->pkt.data_len;
340 /* write data to descriptor */
341 txdp->read.buffer_addr = buf_dma_addr;
342 txdp->read.cmd_type_len =
343 ((uint32_t)DCMD_DTYP_FLAGS | pkt_len);
344 txdp->read.olinfo_status =
345 (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
349 * Fill H/W descriptor ring with mbuf data.
350 * Copy mbuf pointers to the S/W ring.
353 ixgbe_tx_fill_hw_ring(struct igb_tx_queue *txq, struct rte_mbuf **pkts,
356 volatile union ixgbe_adv_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]);
357 struct igb_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]);
358 const int N_PER_LOOP = 4;
359 const int N_PER_LOOP_MASK = N_PER_LOOP-1;
360 int mainpart, leftover;
364 * Process most of the packets in chunks of N pkts. Any
365 * leftover packets will get processed one at a time.
367 mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK));
368 leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK));
369 for (i = 0; i < mainpart; i += N_PER_LOOP) {
370 /* Copy N mbuf pointers to the S/W ring */
371 for (j = 0; j < N_PER_LOOP; ++j) {
372 (txep + i + j)->mbuf = *(pkts + i + j);
374 tx4(txdp + i, pkts + i);
377 if (unlikely(leftover > 0)) {
378 for (i = 0; i < leftover; ++i) {
379 (txep + mainpart + i)->mbuf = *(pkts + mainpart + i);
380 tx1(txdp + mainpart + i, pkts + mainpart + i);
385 static inline uint16_t
386 tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
389 struct igb_tx_queue *txq = (struct igb_tx_queue *)tx_queue;
390 volatile union ixgbe_adv_tx_desc *tx_r = txq->tx_ring;
394 * Begin scanning the H/W ring for done descriptors when the
395 * number of available descriptors drops below tx_free_thresh. For
396 * each done descriptor, free the associated buffer.
398 if (txq->nb_tx_free < txq->tx_free_thresh)
399 ixgbe_tx_free_bufs(txq);
401 /* Only use descriptors that are available */
402 nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
403 if (unlikely(nb_pkts == 0))
406 /* Use exactly nb_pkts descriptors */
407 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
410 * At this point, we know there are enough descriptors in the
411 * ring to transmit all the packets. This assumes that each
412 * mbuf contains a single segment, and that no new offloads
413 * are expected, which would require a new context descriptor.
417 * See if we're going to wrap-around. If so, handle the top
418 * of the descriptor ring first, then do the bottom. If not,
419 * the processing looks just like the "bottom" part anyway...
421 if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) {
422 n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail);
423 ixgbe_tx_fill_hw_ring(txq, tx_pkts, n);
426 * We know that the last descriptor in the ring will need to
427 * have its RS bit set because tx_rs_thresh has to be
428 * a divisor of the ring size
430 tx_r[txq->tx_next_rs].read.cmd_type_len |=
431 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
432 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
437 /* Fill H/W descriptor ring with mbuf data */
438 ixgbe_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n));
439 txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n));
442 * Determine if RS bit should be set
443 * This is what we actually want:
444 * if ((txq->tx_tail - 1) >= txq->tx_next_rs)
445 * but instead of subtracting 1 and doing >=, we can just do
446 * greater than without subtracting.
448 if (txq->tx_tail > txq->tx_next_rs) {
449 tx_r[txq->tx_next_rs].read.cmd_type_len |=
450 rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS);
451 txq->tx_next_rs = (uint16_t)(txq->tx_next_rs +
453 if (txq->tx_next_rs >= txq->nb_tx_desc)
454 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
458 * Check for wrap-around. This would only happen if we used
459 * up to the last descriptor in the ring, no more, no less.
461 if (txq->tx_tail >= txq->nb_tx_desc)
464 /* update tail pointer */
466 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
472 ixgbe_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts,
477 /* Try to transmit at least chunks of TX_MAX_BURST pkts */
478 if (likely(nb_pkts <= RTE_PMD_IXGBE_TX_MAX_BURST))
479 return tx_xmit_pkts(tx_queue, tx_pkts, nb_pkts);
481 /* transmit more than the max burst, in chunks of TX_MAX_BURST */
485 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_TX_MAX_BURST);
486 ret = tx_xmit_pkts(tx_queue, &(tx_pkts[nb_tx]), n);
487 nb_tx = (uint16_t)(nb_tx + ret);
488 nb_pkts = (uint16_t)(nb_pkts - ret);
497 ixgbe_set_xmit_ctx(struct igb_tx_queue* txq,
498 volatile struct ixgbe_adv_tx_context_desc *ctx_txd,
499 uint16_t ol_flags, uint32_t vlan_macip_lens)
501 uint32_t type_tucmd_mlhl;
502 uint32_t mss_l4len_idx;
506 ctx_idx = txq->ctx_curr;
510 if (ol_flags & PKT_TX_VLAN_PKT) {
511 cmp_mask |= TX_VLAN_CMP_MASK;
514 if (ol_flags & PKT_TX_IP_CKSUM) {
515 type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4;
516 cmp_mask |= TX_MAC_LEN_CMP_MASK;
519 /* Specify which HW CTX to upload. */
520 mss_l4len_idx = (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT);
521 switch (ol_flags & PKT_TX_L4_MASK) {
522 case PKT_TX_UDP_CKSUM:
523 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP |
524 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
525 mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
526 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
528 case PKT_TX_TCP_CKSUM:
529 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP |
530 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
531 mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
532 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
534 case PKT_TX_SCTP_CKSUM:
535 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP |
536 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
537 mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT;
538 cmp_mask |= TX_MACIP_LEN_CMP_MASK;
541 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV |
542 IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT;
546 txq->ctx_cache[ctx_idx].flags = ol_flags;
547 txq->ctx_cache[ctx_idx].cmp_mask = cmp_mask;
548 txq->ctx_cache[ctx_idx].vlan_macip_lens.data =
549 vlan_macip_lens & cmp_mask;
551 ctx_txd->type_tucmd_mlhl = rte_cpu_to_le_32(type_tucmd_mlhl);
552 ctx_txd->vlan_macip_lens = rte_cpu_to_le_32(vlan_macip_lens);
553 ctx_txd->mss_l4len_idx = rte_cpu_to_le_32(mss_l4len_idx);
554 ctx_txd->seqnum_seed = 0;
558 * Check which hardware context can be used. Use the existing match
559 * or create a new context descriptor.
561 static inline uint32_t
562 what_advctx_update(struct igb_tx_queue *txq, uint16_t flags,
563 uint32_t vlan_macip_lens)
565 /* If match with the current used context */
566 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
567 (txq->ctx_cache[txq->ctx_curr].vlan_macip_lens.data ==
568 (txq->ctx_cache[txq->ctx_curr].cmp_mask & vlan_macip_lens)))) {
569 return txq->ctx_curr;
572 /* What if match with the next context */
574 if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) &&
575 (txq->ctx_cache[txq->ctx_curr].vlan_macip_lens.data ==
576 (txq->ctx_cache[txq->ctx_curr].cmp_mask & vlan_macip_lens)))) {
577 return txq->ctx_curr;
580 /* Mismatch, use the previous context */
581 return (IXGBE_CTX_NUM);
584 static inline uint32_t
585 tx_desc_cksum_flags_to_olinfo(uint16_t ol_flags)
587 static const uint32_t l4_olinfo[2] = {0, IXGBE_ADVTXD_POPTS_TXSM};
588 static const uint32_t l3_olinfo[2] = {0, IXGBE_ADVTXD_POPTS_IXSM};
591 tmp = l4_olinfo[(ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM];
592 tmp |= l3_olinfo[(ol_flags & PKT_TX_IP_CKSUM) != 0];
596 static inline uint32_t
597 tx_desc_vlan_flags_to_cmdtype(uint16_t ol_flags)
599 static const uint32_t vlan_cmd[2] = {0, IXGBE_ADVTXD_DCMD_VLE};
600 return vlan_cmd[(ol_flags & PKT_TX_VLAN_PKT) != 0];
603 /* Default RS bit threshold values */
604 #ifndef DEFAULT_TX_RS_THRESH
605 #define DEFAULT_TX_RS_THRESH 32
607 #ifndef DEFAULT_TX_FREE_THRESH
608 #define DEFAULT_TX_FREE_THRESH 32
611 /* Reset transmit descriptors after they have been used */
613 ixgbe_xmit_cleanup(struct igb_tx_queue *txq)
615 struct igb_tx_entry *sw_ring = txq->sw_ring;
616 volatile union ixgbe_adv_tx_desc *txr = txq->tx_ring;
617 uint16_t last_desc_cleaned = txq->last_desc_cleaned;
618 uint16_t nb_tx_desc = txq->nb_tx_desc;
619 uint16_t desc_to_clean_to;
620 uint16_t nb_tx_to_clean;
622 /* Determine the last descriptor needing to be cleaned */
623 desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
624 if (desc_to_clean_to >= nb_tx_desc)
625 desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
627 /* Check to make sure the last descriptor to clean is done */
628 desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
629 if (! (txr[desc_to_clean_to].wb.status & IXGBE_TXD_STAT_DD))
631 PMD_TX_FREE_LOG(DEBUG,
632 "TX descriptor %4u is not done"
633 "(port=%d queue=%d)",
635 txq->port_id, txq->queue_id);
636 /* Failed to clean any descriptors, better luck next time */
640 /* Figure out how many descriptors will be cleaned */
641 if (last_desc_cleaned > desc_to_clean_to)
642 nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
645 nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
648 PMD_TX_FREE_LOG(DEBUG,
649 "Cleaning %4u TX descriptors: %4u to %4u "
650 "(port=%d queue=%d)",
651 nb_tx_to_clean, last_desc_cleaned, desc_to_clean_to,
652 txq->port_id, txq->queue_id);
655 * The last descriptor to clean is done, so that means all the
656 * descriptors from the last descriptor that was cleaned
657 * up to the last descriptor with the RS bit set
658 * are done. Only reset the threshold descriptor.
660 txr[desc_to_clean_to].wb.status = 0;
662 /* Update the txq to reflect the last descriptor that was cleaned */
663 txq->last_desc_cleaned = desc_to_clean_to;
664 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
671 ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
674 struct igb_tx_queue *txq;
675 struct igb_tx_entry *sw_ring;
676 struct igb_tx_entry *txe, *txn;
677 volatile union ixgbe_adv_tx_desc *txr;
678 volatile union ixgbe_adv_tx_desc *txd;
679 struct rte_mbuf *tx_pkt;
680 struct rte_mbuf *m_seg;
681 uint64_t buf_dma_addr;
682 uint32_t olinfo_status;
683 uint32_t cmd_type_len;
692 uint32_t vlan_macip_lens;
697 sw_ring = txq->sw_ring;
699 tx_id = txq->tx_tail;
700 txe = &sw_ring[tx_id];
702 /* Determine if the descriptor ring needs to be cleaned. */
703 if ((txq->nb_tx_desc - txq->nb_tx_free) > txq->tx_free_thresh) {
704 ixgbe_xmit_cleanup(txq);
708 for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
711 pkt_len = tx_pkt->pkt.pkt_len;
713 RTE_MBUF_PREFETCH_TO_FREE(txe->mbuf);
716 * Determine how many (if any) context descriptors
717 * are needed for offload functionality.
719 ol_flags = tx_pkt->ol_flags;
720 vlan_macip_lens = tx_pkt->pkt.vlan_macip.data;
722 /* If hardware offload required */
723 tx_ol_req = (uint16_t)(ol_flags & PKT_TX_OFFLOAD_MASK);
725 /* If new context need be built or reuse the exist ctx. */
726 ctx = what_advctx_update(txq, tx_ol_req,
728 /* Only allocate context descriptor if required*/
729 new_ctx = (ctx == IXGBE_CTX_NUM);
734 * Keep track of how many descriptors are used this loop
735 * This will always be the number of segments + the number of
736 * Context descriptors required to transmit the packet
738 nb_used = (uint16_t)(tx_pkt->pkt.nb_segs + new_ctx);
741 * The number of descriptors that must be allocated for a
742 * packet is the number of segments of that packet, plus 1
743 * Context Descriptor for the hardware offload, if any.
744 * Determine the last TX descriptor to allocate in the TX ring
745 * for the packet, starting from the current position (tx_id)
748 tx_last = (uint16_t) (tx_id + nb_used - 1);
751 if (tx_last >= txq->nb_tx_desc)
752 tx_last = (uint16_t) (tx_last - txq->nb_tx_desc);
754 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u pktlen=%u"
755 " tx_first=%u tx_last=%u\n",
756 (unsigned) txq->port_id,
757 (unsigned) txq->queue_id,
763 * Make sure there are enough TX descriptors available to
764 * transmit the entire packet.
765 * nb_used better be less than or equal to txq->tx_rs_thresh
767 if (nb_used > txq->nb_tx_free) {
768 PMD_TX_FREE_LOG(DEBUG,
769 "Not enough free TX descriptors "
770 "nb_used=%4u nb_free=%4u "
771 "(port=%d queue=%d)",
772 nb_used, txq->nb_tx_free,
773 txq->port_id, txq->queue_id);
775 if (ixgbe_xmit_cleanup(txq) != 0) {
776 /* Could not clean any descriptors */
782 /* nb_used better be <= txq->tx_rs_thresh */
783 if (unlikely(nb_used > txq->tx_rs_thresh)) {
784 PMD_TX_FREE_LOG(DEBUG,
785 "The number of descriptors needed to "
786 "transmit the packet exceeds the "
787 "RS bit threshold. This will impact "
789 "nb_used=%4u nb_free=%4u "
791 "(port=%d queue=%d)",
792 nb_used, txq->nb_tx_free,
794 txq->port_id, txq->queue_id);
796 * Loop here until there are enough TX
797 * descriptors or until the ring cannot be
800 while (nb_used > txq->nb_tx_free) {
801 if (ixgbe_xmit_cleanup(txq) != 0) {
803 * Could not clean any
815 * By now there are enough free TX descriptors to transmit
820 * Set common flags of all TX Data Descriptors.
822 * The following bits must be set in all Data Descriptors:
823 * - IXGBE_ADVTXD_DTYP_DATA
824 * - IXGBE_ADVTXD_DCMD_DEXT
826 * The following bits must be set in the first Data Descriptor
827 * and are ignored in the other ones:
828 * - IXGBE_ADVTXD_DCMD_IFCS
829 * - IXGBE_ADVTXD_MAC_1588
830 * - IXGBE_ADVTXD_DCMD_VLE
832 * The following bits must only be set in the last Data
834 * - IXGBE_TXD_CMD_EOP
836 * The following bits can be set in any Data Descriptor, but
837 * are only set in the last Data Descriptor:
840 cmd_type_len = IXGBE_ADVTXD_DTYP_DATA |
841 IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
842 olinfo_status = (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT);
843 #ifdef RTE_LIBRTE_IEEE1588
844 if (ol_flags & PKT_TX_IEEE1588_TMST)
845 cmd_type_len |= IXGBE_ADVTXD_MAC_1588;
850 * Setup the TX Advanced Context Descriptor if required
853 volatile struct ixgbe_adv_tx_context_desc *
856 ctx_txd = (volatile struct
857 ixgbe_adv_tx_context_desc *)
860 txn = &sw_ring[txe->next_id];
861 RTE_MBUF_PREFETCH_TO_FREE(txn->mbuf);
863 if (txe->mbuf != NULL) {
864 rte_pktmbuf_free_seg(txe->mbuf);
868 ixgbe_set_xmit_ctx(txq, ctx_txd, tx_ol_req,
871 txe->last_id = tx_last;
872 tx_id = txe->next_id;
877 * Setup the TX Advanced Data Descriptor,
878 * This path will go through
879 * whatever new/reuse the context descriptor
881 cmd_type_len |= tx_desc_vlan_flags_to_cmdtype(ol_flags);
882 olinfo_status |= tx_desc_cksum_flags_to_olinfo(ol_flags);
883 olinfo_status |= ctx << IXGBE_ADVTXD_IDX_SHIFT;
889 txn = &sw_ring[txe->next_id];
891 if (txe->mbuf != NULL)
892 rte_pktmbuf_free_seg(txe->mbuf);
896 * Set up Transmit Data Descriptor.
898 slen = m_seg->pkt.data_len;
899 buf_dma_addr = RTE_MBUF_DATA_DMA_ADDR(m_seg);
900 txd->read.buffer_addr =
901 rte_cpu_to_le_64(buf_dma_addr);
902 txd->read.cmd_type_len =
903 rte_cpu_to_le_32(cmd_type_len | slen);
904 txd->read.olinfo_status =
905 rte_cpu_to_le_32(olinfo_status);
906 txe->last_id = tx_last;
907 tx_id = txe->next_id;
909 m_seg = m_seg->pkt.next;
910 } while (m_seg != NULL);
913 * The last packet data descriptor needs End Of Packet (EOP)
915 cmd_type_len |= IXGBE_TXD_CMD_EOP;
916 txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
917 txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
919 /* Set RS bit only on threshold packets' last descriptor */
920 if (txq->nb_tx_used >= txq->tx_rs_thresh) {
921 PMD_TX_FREE_LOG(DEBUG,
922 "Setting RS bit on TXD id="
923 "%4u (port=%d queue=%d)",
924 tx_last, txq->port_id, txq->queue_id);
926 cmd_type_len |= IXGBE_TXD_CMD_RS;
928 /* Update txq RS bit counters */
931 txd->read.cmd_type_len |= rte_cpu_to_le_32(cmd_type_len);
937 * Set the Transmit Descriptor Tail (TDT)
939 PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
940 (unsigned) txq->port_id, (unsigned) txq->queue_id,
941 (unsigned) tx_id, (unsigned) nb_tx);
942 IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
943 txq->tx_tail = tx_id;
948 /*********************************************************************
952 **********************************************************************/
953 static inline uint16_t
954 rx_desc_hlen_type_rss_to_pkt_flags(uint32_t hl_tp_rs)
958 static uint16_t ip_pkt_types_map[16] = {
959 0, PKT_RX_IPV4_HDR, PKT_RX_IPV4_HDR_EXT, PKT_RX_IPV4_HDR_EXT,
960 PKT_RX_IPV6_HDR, 0, 0, 0,
961 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
962 PKT_RX_IPV6_HDR_EXT, 0, 0, 0,
965 static uint16_t ip_rss_types_map[16] = {
966 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH,
967 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH,
968 PKT_RX_RSS_HASH, 0, 0, 0,
969 0, 0, 0, PKT_RX_FDIR,
972 #ifdef RTE_LIBRTE_IEEE1588
973 static uint32_t ip_pkt_etqf_map[8] = {
974 0, 0, 0, PKT_RX_IEEE1588_PTP,
978 pkt_flags = (uint16_t) ((hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ?
979 ip_pkt_etqf_map[(hl_tp_rs >> 4) & 0x07] :
980 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F]);
982 pkt_flags = (uint16_t) ((hl_tp_rs & IXGBE_RXDADV_PKTTYPE_ETQF) ? 0 :
983 ip_pkt_types_map[(hl_tp_rs >> 4) & 0x0F]);
986 return (uint16_t)(pkt_flags | ip_rss_types_map[hl_tp_rs & 0xF]);
989 static inline uint16_t
990 rx_desc_status_to_pkt_flags(uint32_t rx_status)
995 * Check if VLAN present only.
996 * Do not check whether L3/L4 rx checksum done by NIC or not,
997 * That can be found from rte_eth_rxmode.hw_ip_checksum flag
999 pkt_flags = (uint16_t)((rx_status & IXGBE_RXD_STAT_VP) ?
1000 PKT_RX_VLAN_PKT : 0);
1002 #ifdef RTE_LIBRTE_IEEE1588
1003 if (rx_status & IXGBE_RXD_STAT_TMST)
1004 pkt_flags = (uint16_t)(pkt_flags | PKT_RX_IEEE1588_TMST);
1009 static inline uint16_t
1010 rx_desc_error_to_pkt_flags(uint32_t rx_status)
1013 * Bit 31: IPE, IPv4 checksum error
1014 * Bit 30: L4I, L4I integrity error
1016 static uint16_t error_to_pkt_flags_map[4] = {
1017 0, PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD,
1018 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
1020 return error_to_pkt_flags_map[(rx_status >>
1021 IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
1024 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
1026 * LOOK_AHEAD defines how many desc statuses to check beyond the
1027 * current descriptor.
1028 * It must be a pound define for optimal performance.
1029 * Do not change the value of LOOK_AHEAD, as the ixgbe_rx_scan_hw_ring
1030 * function only works with LOOK_AHEAD=8.
1032 #define LOOK_AHEAD 8
1033 #if (LOOK_AHEAD != 8)
1034 #error "PMD IXGBE: LOOK_AHEAD must be 8\n"
1037 ixgbe_rx_scan_hw_ring(struct igb_rx_queue *rxq)
1039 volatile union ixgbe_adv_rx_desc *rxdp;
1040 struct igb_rx_entry *rxep;
1041 struct rte_mbuf *mb;
1043 int s[LOOK_AHEAD], nb_dd;
1044 int i, j, nb_rx = 0;
1047 /* get references to current descriptor and S/W ring entry */
1048 rxdp = &rxq->rx_ring[rxq->rx_tail];
1049 rxep = &rxq->sw_ring[rxq->rx_tail];
1051 /* check to make sure there is at least 1 packet to receive */
1052 if (! (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD))
1056 * Scan LOOK_AHEAD descriptors at a time to determine which descriptors
1057 * reference packets that are ready to be received.
1059 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST;
1060 i += LOOK_AHEAD, rxdp += LOOK_AHEAD, rxep += LOOK_AHEAD)
1062 /* Read desc statuses backwards to avoid race condition */
1063 for (j = LOOK_AHEAD-1; j >= 0; --j)
1064 s[j] = rxdp[j].wb.upper.status_error;
1066 /* Clear everything but the status bits (LSB) */
1067 for (j = 0; j < LOOK_AHEAD; ++j)
1068 s[j] &= IXGBE_RXDADV_STAT_DD;
1070 /* Compute how many status bits were set */
1071 nb_dd = s[0]+s[1]+s[2]+s[3]+s[4]+s[5]+s[6]+s[7];
1074 /* Translate descriptor info to mbuf format */
1075 for (j = 0; j < nb_dd; ++j) {
1077 pkt_len = (uint16_t)(rxdp[j].wb.upper.length -
1079 mb->pkt.data_len = pkt_len;
1080 mb->pkt.pkt_len = pkt_len;
1081 mb->pkt.vlan_macip.f.vlan_tci = rxdp[j].wb.upper.vlan;
1082 mb->pkt.hash.rss = rxdp[j].wb.lower.hi_dword.rss;
1084 /* convert descriptor fields to rte mbuf flags */
1085 mb->ol_flags = rx_desc_hlen_type_rss_to_pkt_flags(
1086 rxdp[j].wb.lower.lo_dword.data);
1087 /* reuse status field from scan list */
1088 mb->ol_flags = (uint16_t)(mb->ol_flags |
1089 rx_desc_status_to_pkt_flags(s[j]));
1090 mb->ol_flags = (uint16_t)(mb->ol_flags |
1091 rx_desc_error_to_pkt_flags(s[j]));
1094 /* Move mbuf pointers from the S/W ring to the stage */
1095 for (j = 0; j < LOOK_AHEAD; ++j) {
1096 rxq->rx_stage[i + j] = rxep[j].mbuf;
1099 /* stop if all requested packets could not be received */
1100 if (nb_dd != LOOK_AHEAD)
1104 /* clear software ring entries so we can cleanup correctly */
1105 for (i = 0; i < nb_rx; ++i) {
1106 rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL;
1114 ixgbe_rx_alloc_bufs(struct igb_rx_queue *rxq)
1116 volatile union ixgbe_adv_rx_desc *rxdp;
1117 struct igb_rx_entry *rxep;
1118 struct rte_mbuf *mb;
1123 /* allocate buffers in bulk directly into the S/W ring */
1124 alloc_idx = (uint16_t)(rxq->rx_free_trigger -
1125 (rxq->rx_free_thresh - 1));
1126 rxep = &rxq->sw_ring[alloc_idx];
1127 diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep,
1128 rxq->rx_free_thresh);
1129 if (unlikely(diag != 0))
1132 rxdp = &rxq->rx_ring[alloc_idx];
1133 for (i = 0; i < rxq->rx_free_thresh; ++i) {
1134 /* populate the static rte mbuf fields */
1136 rte_mbuf_refcnt_set(mb, 1);
1137 mb->type = RTE_MBUF_PKT;
1138 mb->pkt.next = NULL;
1139 mb->pkt.data = (char *)mb->buf_addr + RTE_PKTMBUF_HEADROOM;
1140 mb->pkt.nb_segs = 1;
1141 mb->pkt.in_port = rxq->port_id;
1143 /* populate the descriptors */
1144 dma_addr = (uint64_t)mb->buf_physaddr + RTE_PKTMBUF_HEADROOM;
1145 rxdp[i].read.hdr_addr = dma_addr;
1146 rxdp[i].read.pkt_addr = dma_addr;
1149 /* update tail pointer */
1151 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rxq->rx_free_trigger);
1153 /* update state of internal queue structure */
1154 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_trigger +
1155 rxq->rx_free_thresh);
1156 if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
1157 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
1163 static inline uint16_t
1164 ixgbe_rx_fill_from_stage(struct igb_rx_queue *rxq, struct rte_mbuf **rx_pkts,
1167 struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
1170 /* how many packets are ready to return? */
1171 nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
1173 /* copy mbuf pointers to the application's packet list */
1174 for (i = 0; i < nb_pkts; ++i)
1175 rx_pkts[i] = stage[i];
1177 /* update internal queue state */
1178 rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
1179 rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
1184 static inline uint16_t
1185 rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1188 struct igb_rx_queue *rxq = (struct igb_rx_queue *)rx_queue;
1191 /* Any previously recv'd pkts will be returned from the Rx stage */
1192 if (rxq->rx_nb_avail)
1193 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1195 /* Scan the H/W ring for packets to receive */
1196 nb_rx = (uint16_t)ixgbe_rx_scan_hw_ring(rxq);
1198 /* update internal queue state */
1199 rxq->rx_next_avail = 0;
1200 rxq->rx_nb_avail = nb_rx;
1201 rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
1203 /* if required, allocate new buffers to replenish descriptors */
1204 if (rxq->rx_tail > rxq->rx_free_trigger) {
1205 if (ixgbe_rx_alloc_bufs(rxq) != 0) {
1207 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1208 "queue_id=%u\n", (unsigned) rxq->port_id,
1209 (unsigned) rxq->queue_id);
1211 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
1212 rxq->rx_free_thresh;
1215 * Need to rewind any previous receives if we cannot
1216 * allocate new buffers to replenish the old ones.
1218 rxq->rx_nb_avail = 0;
1219 rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
1220 for (i = 0, j = rxq->rx_tail; i < nb_rx; ++i, ++j)
1221 rxq->sw_ring[j].mbuf = rxq->rx_stage[i];
1227 if (rxq->rx_tail >= rxq->nb_rx_desc)
1230 /* received any packets this loop? */
1231 if (rxq->rx_nb_avail)
1232 return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
1237 /* split requests into chunks of size RTE_PMD_IXGBE_RX_MAX_BURST */
1239 ixgbe_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
1244 if (unlikely(nb_pkts == 0))
1247 if (likely(nb_pkts <= RTE_PMD_IXGBE_RX_MAX_BURST))
1248 return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
1250 /* request is relatively large, chunk it up */
1254 n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_RX_MAX_BURST);
1255 ret = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
1256 nb_rx = (uint16_t)(nb_rx + ret);
1257 nb_pkts = (uint16_t)(nb_pkts - ret);
1264 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
1267 ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1270 struct igb_rx_queue *rxq;
1271 volatile union ixgbe_adv_rx_desc *rx_ring;
1272 volatile union ixgbe_adv_rx_desc *rxdp;
1273 struct igb_rx_entry *sw_ring;
1274 struct igb_rx_entry *rxe;
1275 struct rte_mbuf *rxm;
1276 struct rte_mbuf *nmb;
1277 union ixgbe_adv_rx_desc rxd;
1280 uint32_t hlen_type_rss;
1290 rx_id = rxq->rx_tail;
1291 rx_ring = rxq->rx_ring;
1292 sw_ring = rxq->sw_ring;
1293 while (nb_rx < nb_pkts) {
1295 * The order of operations here is important as the DD status
1296 * bit must not be read after any other descriptor fields.
1297 * rx_ring and rxdp are pointing to volatile data so the order
1298 * of accesses cannot be reordered by the compiler. If they were
1299 * not volatile, they could be reordered which could lead to
1300 * using invalid descriptor fields when read from rxd.
1302 rxdp = &rx_ring[rx_id];
1303 staterr = rxdp->wb.upper.status_error;
1304 if (! (staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1311 * If the IXGBE_RXDADV_STAT_EOP flag is not set, the RX packet
1312 * is likely to be invalid and to be dropped by the various
1313 * validation checks performed by the network stack.
1315 * Allocate a new mbuf to replenish the RX ring descriptor.
1316 * If the allocation fails:
1317 * - arrange for that RX descriptor to be the first one
1318 * being parsed the next time the receive function is
1319 * invoked [on the same queue].
1321 * - Stop parsing the RX ring and return immediately.
1323 * This policy do not drop the packet received in the RX
1324 * descriptor for which the allocation of a new mbuf failed.
1325 * Thus, it allows that packet to be later retrieved if
1326 * mbuf have been freed in the mean time.
1327 * As a side effect, holding RX descriptors instead of
1328 * systematically giving them back to the NIC may lead to
1329 * RX ring exhaustion situations.
1330 * However, the NIC can gracefully prevent such situations
1331 * to happen by sending specific "back-pressure" flow control
1332 * frames to its peer(s).
1334 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
1335 "ext_err_stat=0x%08x pkt_len=%u\n",
1336 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1337 (unsigned) rx_id, (unsigned) staterr,
1338 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1340 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1342 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1343 "queue_id=%u\n", (unsigned) rxq->port_id,
1344 (unsigned) rxq->queue_id);
1345 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1350 rxe = &sw_ring[rx_id];
1352 if (rx_id == rxq->nb_rx_desc)
1355 /* Prefetch next mbuf while processing current one. */
1356 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1359 * When next RX descriptor is on a cache-line boundary,
1360 * prefetch the next 4 RX descriptors and the next 8 pointers
1363 if ((rx_id & 0x3) == 0) {
1364 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1365 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1371 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1372 rxdp->read.hdr_addr = dma_addr;
1373 rxdp->read.pkt_addr = dma_addr;
1376 * Initialize the returned mbuf.
1377 * 1) setup generic mbuf fields:
1378 * - number of segments,
1381 * - RX port identifier.
1382 * 2) integrate hardware offload data, if any:
1383 * - RSS flag & hash,
1384 * - IP checksum flag,
1385 * - VLAN TCI, if any,
1388 pkt_len = (uint16_t) (rte_le_to_cpu_16(rxd.wb.upper.length) -
1390 rxm->pkt.data = (char*) rxm->buf_addr + RTE_PKTMBUF_HEADROOM;
1391 rte_packet_prefetch(rxm->pkt.data);
1392 rxm->pkt.nb_segs = 1;
1393 rxm->pkt.next = NULL;
1394 rxm->pkt.pkt_len = pkt_len;
1395 rxm->pkt.data_len = pkt_len;
1396 rxm->pkt.in_port = rxq->port_id;
1398 hlen_type_rss = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data);
1399 /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
1400 rxm->pkt.vlan_macip.f.vlan_tci =
1401 rte_le_to_cpu_16(rxd.wb.upper.vlan);
1403 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1404 pkt_flags = (uint16_t)(pkt_flags |
1405 rx_desc_status_to_pkt_flags(staterr));
1406 pkt_flags = (uint16_t)(pkt_flags |
1407 rx_desc_error_to_pkt_flags(staterr));
1408 rxm->ol_flags = pkt_flags;
1410 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1411 rxm->pkt.hash.rss = rxd.wb.lower.hi_dword.rss;
1412 else if (pkt_flags & PKT_RX_FDIR) {
1413 rxm->pkt.hash.fdir.hash =
1414 (uint16_t)((rxd.wb.lower.hi_dword.csum_ip.csum)
1415 & IXGBE_ATR_HASH_MASK);
1416 rxm->pkt.hash.fdir.id = rxd.wb.lower.hi_dword.csum_ip.ip_id;
1419 * Store the mbuf address into the next entry of the array
1420 * of returned packets.
1422 rx_pkts[nb_rx++] = rxm;
1424 rxq->rx_tail = rx_id;
1427 * If the number of free RX descriptors is greater than the RX free
1428 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1430 * Update the RDT with the value of the last processed RX descriptor
1431 * minus 1, to guarantee that the RDT register is never equal to the
1432 * RDH register, which creates a "full" ring situtation from the
1433 * hardware point of view...
1435 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1436 if (nb_hold > rxq->rx_free_thresh) {
1437 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1438 "nb_hold=%u nb_rx=%u\n",
1439 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1440 (unsigned) rx_id, (unsigned) nb_hold,
1442 rx_id = (uint16_t) ((rx_id == 0) ?
1443 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1444 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1447 rxq->nb_rx_hold = nb_hold;
1452 ixgbe_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1455 struct igb_rx_queue *rxq;
1456 volatile union ixgbe_adv_rx_desc *rx_ring;
1457 volatile union ixgbe_adv_rx_desc *rxdp;
1458 struct igb_rx_entry *sw_ring;
1459 struct igb_rx_entry *rxe;
1460 struct rte_mbuf *first_seg;
1461 struct rte_mbuf *last_seg;
1462 struct rte_mbuf *rxm;
1463 struct rte_mbuf *nmb;
1464 union ixgbe_adv_rx_desc rxd;
1465 uint64_t dma; /* Physical address of mbuf data buffer */
1467 uint32_t hlen_type_rss;
1477 rx_id = rxq->rx_tail;
1478 rx_ring = rxq->rx_ring;
1479 sw_ring = rxq->sw_ring;
1482 * Retrieve RX context of current packet, if any.
1484 first_seg = rxq->pkt_first_seg;
1485 last_seg = rxq->pkt_last_seg;
1487 while (nb_rx < nb_pkts) {
1490 * The order of operations here is important as the DD status
1491 * bit must not be read after any other descriptor fields.
1492 * rx_ring and rxdp are pointing to volatile data so the order
1493 * of accesses cannot be reordered by the compiler. If they were
1494 * not volatile, they could be reordered which could lead to
1495 * using invalid descriptor fields when read from rxd.
1497 rxdp = &rx_ring[rx_id];
1498 staterr = rxdp->wb.upper.status_error;
1499 if (! (staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
1506 * Allocate a new mbuf to replenish the RX ring descriptor.
1507 * If the allocation fails:
1508 * - arrange for that RX descriptor to be the first one
1509 * being parsed the next time the receive function is
1510 * invoked [on the same queue].
1512 * - Stop parsing the RX ring and return immediately.
1514 * This policy does not drop the packet received in the RX
1515 * descriptor for which the allocation of a new mbuf failed.
1516 * Thus, it allows that packet to be later retrieved if
1517 * mbuf have been freed in the mean time.
1518 * As a side effect, holding RX descriptors instead of
1519 * systematically giving them back to the NIC may lead to
1520 * RX ring exhaustion situations.
1521 * However, the NIC can gracefully prevent such situations
1522 * to happen by sending specific "back-pressure" flow control
1523 * frames to its peer(s).
1525 PMD_RX_LOG(DEBUG, "\nport_id=%u queue_id=%u rx_id=%u "
1526 "staterr=0x%x data_len=%u\n",
1527 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1528 (unsigned) rx_id, (unsigned) staterr,
1529 (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length));
1531 nmb = rte_rxmbuf_alloc(rxq->mb_pool);
1533 PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
1534 "queue_id=%u\n", (unsigned) rxq->port_id,
1535 (unsigned) rxq->queue_id);
1536 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
1541 rxe = &sw_ring[rx_id];
1543 if (rx_id == rxq->nb_rx_desc)
1546 /* Prefetch next mbuf while processing current one. */
1547 rte_ixgbe_prefetch(sw_ring[rx_id].mbuf);
1550 * When next RX descriptor is on a cache-line boundary,
1551 * prefetch the next 4 RX descriptors and the next 8 pointers
1554 if ((rx_id & 0x3) == 0) {
1555 rte_ixgbe_prefetch(&rx_ring[rx_id]);
1556 rte_ixgbe_prefetch(&sw_ring[rx_id]);
1560 * Update RX descriptor with the physical address of the new
1561 * data buffer of the new allocated mbuf.
1565 dma = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
1566 rxdp->read.hdr_addr = dma;
1567 rxdp->read.pkt_addr = dma;
1570 * Set data length & data buffer address of mbuf.
1572 data_len = rte_le_to_cpu_16(rxd.wb.upper.length);
1573 rxm->pkt.data_len = data_len;
1574 rxm->pkt.data = (char*) rxm->buf_addr + RTE_PKTMBUF_HEADROOM;
1577 * If this is the first buffer of the received packet,
1578 * set the pointer to the first mbuf of the packet and
1579 * initialize its context.
1580 * Otherwise, update the total length and the number of segments
1581 * of the current scattered packet, and update the pointer to
1582 * the last mbuf of the current packet.
1584 if (first_seg == NULL) {
1586 first_seg->pkt.pkt_len = data_len;
1587 first_seg->pkt.nb_segs = 1;
1589 first_seg->pkt.pkt_len = (uint16_t)(first_seg->pkt.pkt_len
1591 first_seg->pkt.nb_segs++;
1592 last_seg->pkt.next = rxm;
1596 * If this is not the last buffer of the received packet,
1597 * update the pointer to the last mbuf of the current scattered
1598 * packet and continue to parse the RX ring.
1600 if (! (staterr & IXGBE_RXDADV_STAT_EOP)) {
1606 * This is the last buffer of the received packet.
1607 * If the CRC is not stripped by the hardware:
1608 * - Subtract the CRC length from the total packet length.
1609 * - If the last buffer only contains the whole CRC or a part
1610 * of it, free the mbuf associated to the last buffer.
1611 * If part of the CRC is also contained in the previous
1612 * mbuf, subtract the length of that CRC part from the
1613 * data length of the previous mbuf.
1615 rxm->pkt.next = NULL;
1616 if (unlikely(rxq->crc_len > 0)) {
1617 first_seg->pkt.pkt_len -= ETHER_CRC_LEN;
1618 if (data_len <= ETHER_CRC_LEN) {
1619 rte_pktmbuf_free_seg(rxm);
1620 first_seg->pkt.nb_segs--;
1621 last_seg->pkt.data_len = (uint16_t)
1622 (last_seg->pkt.data_len -
1623 (ETHER_CRC_LEN - data_len));
1624 last_seg->pkt.next = NULL;
1627 (uint16_t) (data_len - ETHER_CRC_LEN);
1631 * Initialize the first mbuf of the returned packet:
1632 * - RX port identifier,
1633 * - hardware offload data, if any:
1634 * - RSS flag & hash,
1635 * - IP checksum flag,
1636 * - VLAN TCI, if any,
1639 first_seg->pkt.in_port = rxq->port_id;
1642 * The vlan_tci field is only valid when PKT_RX_VLAN_PKT is
1643 * set in the pkt_flags field.
1645 first_seg->pkt.vlan_macip.f.vlan_tci =
1646 rte_le_to_cpu_16(rxd.wb.upper.vlan);
1647 hlen_type_rss = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data);
1648 pkt_flags = rx_desc_hlen_type_rss_to_pkt_flags(hlen_type_rss);
1649 pkt_flags = (uint16_t)(pkt_flags |
1650 rx_desc_status_to_pkt_flags(staterr));
1651 pkt_flags = (uint16_t)(pkt_flags |
1652 rx_desc_error_to_pkt_flags(staterr));
1653 first_seg->ol_flags = pkt_flags;
1655 if (likely(pkt_flags & PKT_RX_RSS_HASH))
1656 first_seg->pkt.hash.rss = rxd.wb.lower.hi_dword.rss;
1657 else if (pkt_flags & PKT_RX_FDIR) {
1658 first_seg->pkt.hash.fdir.hash =
1659 (uint16_t)((rxd.wb.lower.hi_dword.csum_ip.csum)
1660 & IXGBE_ATR_HASH_MASK);
1661 first_seg->pkt.hash.fdir.id =
1662 rxd.wb.lower.hi_dword.csum_ip.ip_id;
1665 /* Prefetch data of first segment, if configured to do so. */
1666 rte_packet_prefetch(first_seg->pkt.data);
1669 * Store the mbuf address into the next entry of the array
1670 * of returned packets.
1672 rx_pkts[nb_rx++] = first_seg;
1675 * Setup receipt context for a new packet.
1681 * Record index of the next RX descriptor to probe.
1683 rxq->rx_tail = rx_id;
1686 * Save receive context.
1688 rxq->pkt_first_seg = first_seg;
1689 rxq->pkt_last_seg = last_seg;
1692 * If the number of free RX descriptors is greater than the RX free
1693 * threshold of the queue, advance the Receive Descriptor Tail (RDT)
1695 * Update the RDT with the value of the last processed RX descriptor
1696 * minus 1, to guarantee that the RDT register is never equal to the
1697 * RDH register, which creates a "full" ring situtation from the
1698 * hardware point of view...
1700 nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold);
1701 if (nb_hold > rxq->rx_free_thresh) {
1702 PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
1703 "nb_hold=%u nb_rx=%u\n",
1704 (unsigned) rxq->port_id, (unsigned) rxq->queue_id,
1705 (unsigned) rx_id, (unsigned) nb_hold,
1707 rx_id = (uint16_t) ((rx_id == 0) ?
1708 (rxq->nb_rx_desc - 1) : (rx_id - 1));
1709 IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
1712 rxq->nb_rx_hold = nb_hold;
1716 /*********************************************************************
1718 * Queue management functions
1720 **********************************************************************/
1723 * Rings setup and release.
1725 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
1726 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
1727 * also optimize cache line size effect. H/W supports up to cache line size 128.
1729 #define IXGBE_ALIGN 128
1732 * Maximum number of Ring Descriptors.
1734 * Since RDLEN/TDLEN should be multiple of 128 bytes, the number of ring
1735 * descriptors should meet the following condition:
1736 * (num_ring_desc * sizeof(rx/tx descriptor)) % 128 == 0
1738 #define IXGBE_MIN_RING_DESC 64
1739 #define IXGBE_MAX_RING_DESC 4096
1742 * Create memzone for HW rings. malloc can't be used as the physical address is
1743 * needed. If the memzone is already created, then this function returns a ptr
1746 static const struct rte_memzone *
1747 ring_dma_zone_reserve(struct rte_eth_dev *dev, const char *ring_name,
1748 uint16_t queue_id, uint32_t ring_size, int socket_id)
1750 char z_name[RTE_MEMZONE_NAMESIZE];
1751 const struct rte_memzone *mz;
1753 rte_snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
1754 dev->driver->pci_drv.name, ring_name,
1755 dev->data->port_id, queue_id);
1757 mz = rte_memzone_lookup(z_name);
1761 return rte_memzone_reserve_aligned(z_name, ring_size,
1762 socket_id, 0, IXGBE_ALIGN);
1766 ixgbe_tx_queue_release_mbufs(struct igb_tx_queue *txq)
1770 if (txq->sw_ring != NULL) {
1771 for (i = 0; i < txq->nb_tx_desc; i++) {
1772 if (txq->sw_ring[i].mbuf != NULL) {
1773 rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
1774 txq->sw_ring[i].mbuf = NULL;
1781 ixgbe_tx_queue_release(struct igb_tx_queue *txq)
1784 ixgbe_tx_queue_release_mbufs(txq);
1785 rte_free(txq->sw_ring);
1791 ixgbe_dev_tx_queue_release(void *txq)
1793 ixgbe_tx_queue_release(txq);
1796 /* (Re)set dynamic igb_tx_queue fields to defaults */
1798 ixgbe_reset_tx_queue(struct igb_tx_queue *txq)
1800 struct igb_tx_entry *txe = txq->sw_ring;
1803 /* Zero out HW ring memory */
1804 for (i = 0; i < sizeof(union ixgbe_adv_tx_desc) * txq->nb_tx_desc; i++) {
1805 ((volatile char *)txq->tx_ring)[i] = 0;
1808 /* Initialize SW ring entries */
1809 prev = (uint16_t) (txq->nb_tx_desc - 1);
1810 for (i = 0; i < txq->nb_tx_desc; i++) {
1811 volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i];
1812 txd->wb.status = IXGBE_TXD_STAT_DD;
1815 txe[prev].next_id = i;
1819 txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
1820 txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
1823 txq->nb_tx_used = 0;
1825 * Always allow 1 descriptor to be un-allocated to avoid
1826 * a H/W race condition
1828 txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1);
1829 txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1);
1831 memset((void*)&txq->ctx_cache, 0,
1832 IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info));
1836 ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev,
1839 unsigned int socket_id,
1840 const struct rte_eth_txconf *tx_conf)
1842 const struct rte_memzone *tz;
1843 struct igb_tx_queue *txq;
1844 struct ixgbe_hw *hw;
1845 uint16_t tx_rs_thresh, tx_free_thresh;
1847 PMD_INIT_FUNC_TRACE();
1848 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1851 * Validate number of transmit descriptors.
1852 * It must not exceed hardware maximum, and must be multiple
1855 if (((nb_desc * sizeof(union ixgbe_adv_tx_desc)) % IXGBE_ALIGN) != 0 ||
1856 (nb_desc > IXGBE_MAX_RING_DESC) ||
1857 (nb_desc < IXGBE_MIN_RING_DESC)) {
1862 * The following two parameters control the setting of the RS bit on
1863 * transmit descriptors.
1864 * TX descriptors will have their RS bit set after txq->tx_rs_thresh
1865 * descriptors have been used.
1866 * The TX descriptor ring will be cleaned after txq->tx_free_thresh
1867 * descriptors are used or if the number of descriptors required
1868 * to transmit a packet is greater than the number of free TX
1870 * The following constraints must be satisfied:
1871 * tx_rs_thresh must be greater than 0.
1872 * tx_rs_thresh must be less than the size of the ring minus 2.
1873 * tx_rs_thresh must be less than or equal to tx_free_thresh.
1874 * tx_rs_thresh must be a divisor of the ring size.
1875 * tx_free_thresh must be greater than 0.
1876 * tx_free_thresh must be less than the size of the ring minus 3.
1877 * One descriptor in the TX ring is used as a sentinel to avoid a
1878 * H/W race condition, hence the maximum threshold constraints.
1879 * When set to zero use default values.
1881 tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ?
1882 tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
1883 tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
1884 tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
1885 if (tx_rs_thresh >= (nb_desc - 2)) {
1886 RTE_LOG(ERR, PMD, "tx_rs_thresh must be less than the number "
1887 "of TX descriptors minus 2. (tx_rs_thresh=%u port=%d "
1888 "queue=%d)\n", (unsigned int)tx_rs_thresh,
1889 (int)dev->data->port_id, (int)queue_idx);
1892 if (tx_free_thresh >= (nb_desc - 3)) {
1893 RTE_LOG(ERR, PMD, "tx_rs_thresh must be less than the "
1894 "tx_free_thresh must be less than the number of TX "
1895 "descriptors minus 3. (tx_free_thresh=%u port=%d "
1896 "queue=%d)\n", (unsigned int)tx_free_thresh,
1897 (int)dev->data->port_id, (int)queue_idx);
1900 if (tx_rs_thresh > tx_free_thresh) {
1901 RTE_LOG(ERR, PMD, "tx_rs_thresh must be less than or equal to "
1902 "tx_free_thresh. (tx_free_thresh=%u tx_rs_thresh=%u "
1903 "port=%d queue=%d)\n", (unsigned int)tx_free_thresh,
1904 (unsigned int)tx_rs_thresh, (int)dev->data->port_id,
1908 if ((nb_desc % tx_rs_thresh) != 0) {
1909 RTE_LOG(ERR, PMD, "tx_rs_thresh must be a divisor of the "
1910 "number of TX descriptors. (tx_rs_thresh=%u port=%d "
1911 "queue=%d)\n", (unsigned int)tx_rs_thresh,
1912 (int)dev->data->port_id, (int)queue_idx);
1917 * If rs_bit_thresh is greater than 1, then TX WTHRESH should be
1918 * set to 0. If WTHRESH is greater than zero, the RS bit is ignored
1919 * by the NIC and all descriptors are written back after the NIC
1920 * accumulates WTHRESH descriptors.
1922 if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) {
1923 RTE_LOG(ERR, PMD, "TX WTHRESH must be set to 0 if "
1924 "tx_rs_thresh is greater than 1. (tx_rs_thresh=%u "
1925 "port=%d queue=%d)\n", (unsigned int)tx_rs_thresh,
1926 (int)dev->data->port_id, (int)queue_idx);
1930 /* Free memory prior to re-allocation if needed... */
1931 if (dev->data->tx_queues[queue_idx] != NULL)
1932 ixgbe_tx_queue_release(dev->data->tx_queues[queue_idx]);
1934 /* First allocate the tx queue data structure */
1935 txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct igb_tx_queue),
1936 CACHE_LINE_SIZE, socket_id);
1941 * Allocate TX ring hardware descriptors. A memzone large enough to
1942 * handle the maximum ring size is allocated in order to allow for
1943 * resizing in later calls to the queue setup function.
1945 tz = ring_dma_zone_reserve(dev, "tx_ring", queue_idx,
1946 sizeof(union ixgbe_adv_tx_desc) * IXGBE_MAX_RING_DESC,
1949 ixgbe_tx_queue_release(txq);
1953 txq->nb_tx_desc = nb_desc;
1954 txq->tx_rs_thresh = tx_rs_thresh;
1955 txq->tx_free_thresh = tx_free_thresh;
1956 txq->pthresh = tx_conf->tx_thresh.pthresh;
1957 txq->hthresh = tx_conf->tx_thresh.hthresh;
1958 txq->wthresh = tx_conf->tx_thresh.wthresh;
1959 txq->queue_id = queue_idx;
1960 txq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
1961 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
1962 txq->port_id = dev->data->port_id;
1963 txq->txq_flags = tx_conf->txq_flags;
1966 * Modification to set VFTDT for virtual function if vf is detected
1968 if (hw->mac.type == ixgbe_mac_82599_vf)
1969 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_VFTDT(queue_idx));
1971 txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_TDT(txq->reg_idx));
1973 txq->tx_ring_phys_addr = (uint64_t) tz->phys_addr;
1974 txq->tx_ring = (union ixgbe_adv_tx_desc *) tz->addr;
1976 /* Allocate software ring */
1977 txq->sw_ring = rte_zmalloc_socket("txq->sw_ring",
1978 sizeof(struct igb_tx_entry) * nb_desc,
1979 CACHE_LINE_SIZE, socket_id);
1980 if (txq->sw_ring == NULL) {
1981 ixgbe_tx_queue_release(txq);
1984 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64"\n",
1985 txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr);
1987 ixgbe_reset_tx_queue(txq);
1989 dev->data->tx_queues[queue_idx] = txq;
1991 /* Use a simple Tx queue (no offloads, no multi segs) if possible */
1992 if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS) &&
1993 (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) {
1994 PMD_INIT_LOG(INFO, "Using simple tx code path\n");
1995 dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
1997 PMD_INIT_LOG(INFO, "Using full-featured tx code path\n");
1998 PMD_INIT_LOG(INFO, " - txq_flags = %lx [IXGBE_SIMPLE_FLAGS=%lx]\n", (long unsigned)txq->txq_flags, (long unsigned)IXGBE_SIMPLE_FLAGS);
1999 PMD_INIT_LOG(INFO, " - tx_rs_thresh = %lu [RTE_PMD_IXGBE_TX_MAX_BURST=%lu]\n", (long unsigned)txq->tx_rs_thresh, (long unsigned)RTE_PMD_IXGBE_TX_MAX_BURST);
2000 dev->tx_pkt_burst = ixgbe_xmit_pkts;
2007 ixgbe_rx_queue_release_mbufs(struct igb_rx_queue *rxq)
2011 if (rxq->sw_ring != NULL) {
2012 for (i = 0; i < rxq->nb_rx_desc; i++) {
2013 if (rxq->sw_ring[i].mbuf != NULL) {
2014 rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
2015 rxq->sw_ring[i].mbuf = NULL;
2018 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2019 if (rxq->rx_nb_avail) {
2020 for (i = 0; i < rxq->rx_nb_avail; ++i) {
2021 struct rte_mbuf *mb;
2022 mb = rxq->rx_stage[rxq->rx_next_avail + i];
2023 rte_pktmbuf_free_seg(mb);
2025 rxq->rx_nb_avail = 0;
2032 ixgbe_rx_queue_release(struct igb_rx_queue *rxq)
2035 ixgbe_rx_queue_release_mbufs(rxq);
2036 rte_free(rxq->sw_ring);
2042 ixgbe_dev_rx_queue_release(void *rxq)
2044 ixgbe_rx_queue_release(rxq);
2048 * Check if Rx Burst Bulk Alloc function can be used.
2050 * 0: the preconditions are satisfied and the bulk allocation function
2052 * -EINVAL: the preconditions are NOT satisfied and the default Rx burst
2053 * function must be used.
2056 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2057 check_rx_burst_bulk_alloc_preconditions(struct igb_rx_queue *rxq)
2059 check_rx_burst_bulk_alloc_preconditions(__rte_unused struct igb_rx_queue *rxq)
2065 * Make sure the following pre-conditions are satisfied:
2066 * rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST
2067 * rxq->rx_free_thresh < rxq->nb_rx_desc
2068 * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0
2069 * rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST)
2070 * Scattered packets are not supported. This should be checked
2071 * outside of this function.
2073 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2074 if (! (rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST))
2076 else if (! (rxq->rx_free_thresh < rxq->nb_rx_desc))
2078 else if (! ((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0))
2080 else if (! (rxq->nb_rx_desc <
2081 (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST)))
2090 /* Reset dynamic igb_rx_queue fields back to defaults */
2092 ixgbe_reset_rx_queue(struct igb_rx_queue *rxq)
2098 * By default, the Rx queue setup function allocates enough memory for
2099 * IXGBE_MAX_RING_DESC. The Rx Burst bulk allocation function requires
2100 * extra memory at the end of the descriptor ring to be zero'd out. A
2101 * pre-condition for using the Rx burst bulk alloc function is that the
2102 * number of descriptors is less than or equal to
2103 * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the
2104 * constraints here to see if we need to zero out memory after the end
2105 * of the H/W descriptor ring.
2107 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2108 if (check_rx_burst_bulk_alloc_preconditions(rxq) == 0)
2109 /* zero out extra memory */
2110 len = (uint16_t)(rxq->nb_rx_desc + RTE_PMD_IXGBE_RX_MAX_BURST);
2113 /* do not zero out extra memory */
2114 len = rxq->nb_rx_desc;
2117 * Zero out HW ring memory. Zero out extra memory at the end of
2118 * the H/W ring so look-ahead logic in Rx Burst bulk alloc function
2119 * reads extra memory as zeros.
2121 for (i = 0; i < len * sizeof(union ixgbe_adv_rx_desc); i++) {
2122 ((volatile char *)rxq->rx_ring)[i] = 0;
2125 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2127 * initialize extra software ring entries. Space for these extra
2128 * entries is always allocated
2130 memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
2131 for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST; ++i) {
2132 rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf;
2135 rxq->rx_nb_avail = 0;
2136 rxq->rx_next_avail = 0;
2137 rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
2138 #endif /* RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC */
2140 rxq->nb_rx_hold = 0;
2141 rxq->pkt_first_seg = NULL;
2142 rxq->pkt_last_seg = NULL;
2146 ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
2149 unsigned int socket_id,
2150 const struct rte_eth_rxconf *rx_conf,
2151 struct rte_mempool *mp)
2153 const struct rte_memzone *rz;
2154 struct igb_rx_queue *rxq;
2155 struct ixgbe_hw *hw;
2156 int use_def_burst_func = 1;
2159 PMD_INIT_FUNC_TRACE();
2160 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2163 * Validate number of receive descriptors.
2164 * It must not exceed hardware maximum, and must be multiple
2167 if (((nb_desc * sizeof(union ixgbe_adv_rx_desc)) % IXGBE_ALIGN) != 0 ||
2168 (nb_desc > IXGBE_MAX_RING_DESC) ||
2169 (nb_desc < IXGBE_MIN_RING_DESC)) {
2173 /* Free memory prior to re-allocation if needed... */
2174 if (dev->data->rx_queues[queue_idx] != NULL)
2175 ixgbe_rx_queue_release(dev->data->rx_queues[queue_idx]);
2177 /* First allocate the rx queue data structure */
2178 rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct igb_rx_queue),
2179 CACHE_LINE_SIZE, socket_id);
2183 rxq->nb_rx_desc = nb_desc;
2184 rxq->rx_free_thresh = rx_conf->rx_free_thresh;
2185 rxq->queue_id = queue_idx;
2186 rxq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ?
2187 queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx);
2188 rxq->port_id = dev->data->port_id;
2189 rxq->crc_len = (uint8_t) ((dev->data->dev_conf.rxmode.hw_strip_crc) ?
2191 rxq->drop_en = rx_conf->rx_drop_en;
2194 * Allocate RX ring hardware descriptors. A memzone large enough to
2195 * handle the maximum ring size is allocated in order to allow for
2196 * resizing in later calls to the queue setup function.
2198 rz = ring_dma_zone_reserve(dev, "rx_ring", queue_idx,
2199 IXGBE_MAX_RING_DESC * sizeof(union ixgbe_adv_rx_desc),
2202 ixgbe_rx_queue_release(rxq);
2206 * Modified to setup VFRDT for Virtual Function
2208 if (hw->mac.type == ixgbe_mac_82599_vf) {
2210 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDT(queue_idx));
2212 IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDH(queue_idx));
2216 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDT(rxq->reg_idx));
2218 IXGBE_PCI_REG_ADDR(hw, IXGBE_RDH(rxq->reg_idx));
2221 rxq->rx_ring_phys_addr = (uint64_t) rz->phys_addr;
2222 rxq->rx_ring = (union ixgbe_adv_rx_desc *) rz->addr;
2225 * Allocate software ring. Allow for space at the end of the
2226 * S/W ring to make sure look-ahead logic in bulk alloc Rx burst
2227 * function does not access an invalid memory region.
2229 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2230 len = (uint16_t)(nb_desc + RTE_PMD_IXGBE_RX_MAX_BURST);
2234 rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
2235 sizeof(struct igb_rx_entry) * len,
2236 CACHE_LINE_SIZE, socket_id);
2237 if (rxq->sw_ring == NULL) {
2238 ixgbe_rx_queue_release(rxq);
2241 PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64"\n",
2242 rxq->sw_ring, rxq->rx_ring, rxq->rx_ring_phys_addr);
2245 * Certain constaints must be met in order to use the bulk buffer
2246 * allocation Rx burst function.
2248 use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq);
2250 /* Check if pre-conditions are satisfied, and no Scattered Rx */
2251 if (!use_def_burst_func && !dev->data->scattered_rx) {
2252 #ifdef RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC
2253 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
2254 "satisfied. Rx Burst Bulk Alloc function will be "
2255 "used on port=%d, queue=%d.\n",
2256 rxq->port_id, rxq->queue_id);
2257 dev->rx_pkt_burst = ixgbe_recv_pkts_bulk_alloc;
2260 PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions "
2261 "are not satisfied, Scattered Rx is requested, "
2262 "or RTE_LIBRTE_IXGBE_RX_ALLOW_BULK_ALLOC is not "
2263 "enabled (port=%d, queue=%d).\n",
2264 rxq->port_id, rxq->queue_id);
2266 dev->data->rx_queues[queue_idx] = rxq;
2268 ixgbe_reset_rx_queue(rxq);
2274 ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
2276 #define IXGBE_RXQ_SCAN_INTERVAL 4
2277 volatile union ixgbe_adv_rx_desc *rxdp;
2278 struct igb_rx_queue *rxq;
2281 if (rx_queue_id >= dev->data->nb_rx_queues) {
2282 PMD_RX_LOG(ERR, "Invalid RX queue id=%d\n", rx_queue_id);
2286 rxq = dev->data->rx_queues[rx_queue_id];
2287 rxdp = &(rxq->rx_ring[rxq->rx_tail]);
2289 while ((desc < rxq->nb_rx_desc) &&
2290 (rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD)) {
2291 desc += IXGBE_RXQ_SCAN_INTERVAL;
2292 rxdp += IXGBE_RXQ_SCAN_INTERVAL;
2293 if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
2294 rxdp = &(rxq->rx_ring[rxq->rx_tail +
2295 desc - rxq->nb_rx_desc]);
2302 ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
2304 volatile union ixgbe_adv_rx_desc *rxdp;
2305 struct igb_rx_queue *rxq = rx_queue;
2308 if (unlikely(offset >= rxq->nb_rx_desc))
2310 desc = rxq->rx_tail + offset;
2311 if (desc >= rxq->nb_rx_desc)
2312 desc -= rxq->nb_rx_desc;
2314 rxdp = &rxq->rx_ring[desc];
2315 return !!(rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD);
2319 ixgbe_dev_clear_queues(struct rte_eth_dev *dev)
2323 PMD_INIT_FUNC_TRACE();
2325 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2326 struct igb_tx_queue *txq = dev->data->tx_queues[i];
2328 ixgbe_tx_queue_release_mbufs(txq);
2329 ixgbe_reset_tx_queue(txq);
2333 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2334 struct igb_rx_queue *rxq = dev->data->rx_queues[i];
2336 ixgbe_rx_queue_release_mbufs(rxq);
2337 ixgbe_reset_rx_queue(rxq);
2342 /*********************************************************************
2344 * Device RX/TX init functions
2346 **********************************************************************/
2349 * Receive Side Scaling (RSS)
2350 * See section 7.1.2.8 in the following document:
2351 * "Intel 82599 10 GbE Controller Datasheet" - Revision 2.1 October 2009
2354 * The source and destination IP addresses of the IP header and the source
2355 * and destination ports of TCP/UDP headers, if any, of received packets are
2356 * hashed against a configurable random key to compute a 32-bit RSS hash result.
2357 * The seven (7) LSBs of the 32-bit hash result are used as an index into a
2358 * 128-entry redirection table (RETA). Each entry of the RETA provides a 3-bit
2359 * RSS output index which is used as the RX queue index where to store the
2361 * The following output is supplied in the RX write-back descriptor:
2362 * - 32-bit result of the Microsoft RSS hash function,
2363 * - 4-bit RSS type field.
2367 * RSS random key supplied in section 7.1.2.8.3 of the Intel 82599 datasheet.
2368 * Used as the default key.
2370 static uint8_t rss_intel_key[40] = {
2371 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
2372 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
2373 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
2374 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
2375 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
2379 ixgbe_rss_disable(struct rte_eth_dev *dev)
2381 struct ixgbe_hw *hw;
2384 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2385 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
2386 mrqc &= ~IXGBE_MRQC_RSSEN;
2387 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2391 ixgbe_rss_configure(struct rte_eth_dev *dev)
2393 struct ixgbe_hw *hw;
2402 PMD_INIT_FUNC_TRACE();
2403 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2405 rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
2406 if (rss_hf == 0) { /* Disable RSS */
2407 ixgbe_rss_disable(dev);
2410 hash_key = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
2411 if (hash_key == NULL)
2412 hash_key = rss_intel_key; /* Default hash key */
2414 /* Fill in RSS hash key */
2415 for (i = 0; i < 10; i++) {
2416 rss_key = hash_key[(i * 4)];
2417 rss_key |= hash_key[(i * 4) + 1] << 8;
2418 rss_key |= hash_key[(i * 4) + 2] << 16;
2419 rss_key |= hash_key[(i * 4) + 3] << 24;
2420 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, rss_key);
2423 /* Fill in redirection table */
2425 for (i = 0, j = 0; i < 128; i++, j++) {
2426 if (j == dev->data->nb_rx_queues) j = 0;
2427 reta = (reta << 8) | j;
2429 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), rte_bswap32(reta));
2432 /* Set configured hashing functions in MRQC register */
2433 mrqc = IXGBE_MRQC_RSSEN; /* RSS enable */
2434 if (rss_hf & ETH_RSS_IPV4)
2435 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
2436 if (rss_hf & ETH_RSS_IPV4_TCP)
2437 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
2438 if (rss_hf & ETH_RSS_IPV6)
2439 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
2440 if (rss_hf & ETH_RSS_IPV6_EX)
2441 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX;
2442 if (rss_hf & ETH_RSS_IPV6_TCP)
2443 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2444 if (rss_hf & ETH_RSS_IPV6_TCP_EX)
2445 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP;
2446 if (rss_hf & ETH_RSS_IPV4_UDP)
2447 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
2448 if (rss_hf & ETH_RSS_IPV6_UDP)
2449 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
2450 if (rss_hf & ETH_RSS_IPV6_UDP_EX)
2451 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP;
2452 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2455 #define NUM_VFTA_REGISTERS 128
2456 #define NIC_RX_BUFFER_SIZE 0x200
2459 ixgbe_vmdq_dcb_configure(struct rte_eth_dev *dev)
2461 struct rte_eth_vmdq_dcb_conf *cfg;
2462 struct ixgbe_hw *hw;
2463 enum rte_eth_nb_pools num_pools;
2464 uint32_t mrqc, vt_ctl, queue_mapping, vlanctrl;
2466 uint8_t nb_tcs; /* number of traffic classes */
2469 PMD_INIT_FUNC_TRACE();
2470 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2471 cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2472 num_pools = cfg->nb_queue_pools;
2473 /* Check we have a valid number of pools */
2474 if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS) {
2475 ixgbe_rss_disable(dev);
2478 /* 16 pools -> 8 traffic classes, 32 pools -> 4 traffic classes */
2479 nb_tcs = (uint8_t)(ETH_VMDQ_DCB_NUM_QUEUES / (int)num_pools);
2483 * split rx buffer up into sections, each for 1 traffic class
2485 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2486 for (i = 0 ; i < nb_tcs; i++) {
2487 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2488 rxpbsize &= (~(0x3FF << IXGBE_RXPBSIZE_SHIFT));
2489 /* clear 10 bits. */
2490 rxpbsize |= (pbsize << IXGBE_RXPBSIZE_SHIFT); /* set value */
2491 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2493 /* zero alloc all unused TCs */
2494 for (i = nb_tcs; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2495 uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i));
2496 rxpbsize &= (~( 0x3FF << IXGBE_RXPBSIZE_SHIFT ));
2497 /* clear 10 bits. */
2498 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2501 /* MRQC: enable vmdq and dcb */
2502 mrqc = ((num_pools == ETH_16_POOLS) ? \
2503 IXGBE_MRQC_VMDQRT8TCEN : IXGBE_MRQC_VMDQRT4TCEN );
2504 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2506 /* PFVTCTL: turn on virtualisation and set the default pool */
2507 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN;
2508 if (cfg->enable_default_pool) {
2509 vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT);
2511 vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL;
2514 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl);
2516 /* RTRUP2TC: mapping user priorities to traffic classes (TCs) */
2518 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++)
2520 * mapping is done with 3 bits per priority,
2521 * so shift by i*3 each time
2523 queue_mapping |= ((cfg->dcb_queue[i] & 0x07) << (i * 3));
2525 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, queue_mapping);
2527 /* RTRPCS: DCB related */
2528 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, IXGBE_RMCS_RRM);
2530 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2531 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2532 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2533 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2535 /* VFTA - enable all vlan filters */
2536 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2537 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2540 /* VFRE: pool enabling for receive - 16 or 32 */
2541 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), \
2542 num_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2545 * MPSAR - allow pools to read specific mac addresses
2546 * In this case, all pools should be able to read from mac addr 0
2548 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), 0xFFFFFFFF);
2549 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), 0xFFFFFFFF);
2551 /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */
2552 for (i = 0; i < cfg->nb_pool_maps; i++) {
2553 /* set vlan id in VF register and set the valid bit */
2554 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \
2555 (cfg->pool_map[i].vlan_id & 0xFFF)));
2557 * Put the allowed pools in VFB reg. As we only have 16 or 32
2558 * pools, we only need to use the first half of the register
2561 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), cfg->pool_map[i].pools);
2566 * ixgbe_dcb_config_tx_hw_config - Configure general DCB TX parameters
2567 * @hw: pointer to hardware structure
2568 * @dcb_config: pointer to ixgbe_dcb_config structure
2571 ixgbe_dcb_tx_hw_config(struct ixgbe_hw *hw,
2572 struct ixgbe_dcb_config *dcb_config)
2577 PMD_INIT_FUNC_TRACE();
2578 if (hw->mac.type != ixgbe_mac_82598EB) {
2579 /* Disable the Tx desc arbiter so that MTQC can be changed */
2580 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2581 reg |= IXGBE_RTTDCS_ARBDIS;
2582 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
2584 /* Enable DCB for Tx with 8 TCs */
2585 if (dcb_config->num_tcs.pg_tcs == 8) {
2586 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
2589 reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
2591 if (dcb_config->vt_mode)
2592 reg |= IXGBE_MTQC_VT_ENA;
2593 IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
2595 /* Disable drop for all queues */
2596 for (q = 0; q < 128; q++)
2597 IXGBE_WRITE_REG(hw, IXGBE_QDE,
2598 (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
2600 /* Enable the Tx desc arbiter */
2601 reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2602 reg &= ~IXGBE_RTTDCS_ARBDIS;
2603 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
2605 /* Enable Security TX Buffer IFG for DCB */
2606 reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
2607 reg |= IXGBE_SECTX_DCB;
2608 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
2614 * ixgbe_vmdq_dcb_hw_tx_config - Configure general VMDQ+DCB TX parameters
2615 * @dev: pointer to rte_eth_dev structure
2616 * @dcb_config: pointer to ixgbe_dcb_config structure
2619 ixgbe_vmdq_dcb_hw_tx_config(struct rte_eth_dev *dev,
2620 struct ixgbe_dcb_config *dcb_config)
2622 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
2623 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
2624 struct ixgbe_hw *hw =
2625 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2627 PMD_INIT_FUNC_TRACE();
2628 if (hw->mac.type != ixgbe_mac_82598EB)
2629 /*PF VF Transmit Enable*/
2630 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0),
2631 vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF);
2633 /*Configure general DCB TX parameters*/
2634 ixgbe_dcb_tx_hw_config(hw,dcb_config);
2639 ixgbe_vmdq_dcb_rx_config(struct rte_eth_dev *dev,
2640 struct ixgbe_dcb_config *dcb_config)
2642 struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
2643 &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf;
2644 struct ixgbe_dcb_tc_config *tc;
2647 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
2648 if (vmdq_rx_conf->nb_queue_pools == ETH_16_POOLS ) {
2649 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
2650 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
2653 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
2654 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
2656 /* User Priority to Traffic Class mapping */
2657 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2658 j = vmdq_rx_conf->dcb_queue[i];
2659 tc = &dcb_config->tc_config[j];
2660 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
2666 ixgbe_dcb_vt_tx_config(struct rte_eth_dev *dev,
2667 struct ixgbe_dcb_config *dcb_config)
2669 struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
2670 &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf;
2671 struct ixgbe_dcb_tc_config *tc;
2674 /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */
2675 if (vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ) {
2676 dcb_config->num_tcs.pg_tcs = ETH_8_TCS;
2677 dcb_config->num_tcs.pfc_tcs = ETH_8_TCS;
2680 dcb_config->num_tcs.pg_tcs = ETH_4_TCS;
2681 dcb_config->num_tcs.pfc_tcs = ETH_4_TCS;
2684 /* User Priority to Traffic Class mapping */
2685 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2686 j = vmdq_tx_conf->dcb_queue[i];
2687 tc = &dcb_config->tc_config[j];
2688 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
2695 ixgbe_dcb_rx_config(struct rte_eth_dev *dev,
2696 struct ixgbe_dcb_config *dcb_config)
2698 struct rte_eth_dcb_rx_conf *rx_conf =
2699 &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf;
2700 struct ixgbe_dcb_tc_config *tc;
2703 dcb_config->num_tcs.pg_tcs = (uint8_t)rx_conf->nb_tcs;
2704 dcb_config->num_tcs.pfc_tcs = (uint8_t)rx_conf->nb_tcs;
2706 /* User Priority to Traffic Class mapping */
2707 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2708 j = rx_conf->dcb_queue[i];
2709 tc = &dcb_config->tc_config[j];
2710 tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
2716 ixgbe_dcb_tx_config(struct rte_eth_dev *dev,
2717 struct ixgbe_dcb_config *dcb_config)
2719 struct rte_eth_dcb_tx_conf *tx_conf =
2720 &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf;
2721 struct ixgbe_dcb_tc_config *tc;
2724 dcb_config->num_tcs.pg_tcs = (uint8_t)tx_conf->nb_tcs;
2725 dcb_config->num_tcs.pfc_tcs = (uint8_t)tx_conf->nb_tcs;
2727 /* User Priority to Traffic Class mapping */
2728 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2729 j = tx_conf->dcb_queue[i];
2730 tc = &dcb_config->tc_config[j];
2731 tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
2737 * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters
2738 * @hw: pointer to hardware structure
2739 * @dcb_config: pointer to ixgbe_dcb_config structure
2742 ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw,
2743 struct ixgbe_dcb_config *dcb_config)
2749 PMD_INIT_FUNC_TRACE();
2751 * Disable the arbiter before changing parameters
2752 * (always enable recycle mode; WSP)
2754 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS;
2755 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
2757 if (hw->mac.type != ixgbe_mac_82598EB) {
2758 reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
2759 if (dcb_config->num_tcs.pg_tcs == 4) {
2760 if (dcb_config->vt_mode)
2761 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2762 IXGBE_MRQC_VMDQRT4TCEN;
2764 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
2765 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2769 if (dcb_config->num_tcs.pg_tcs == 8) {
2770 if (dcb_config->vt_mode)
2771 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2772 IXGBE_MRQC_VMDQRT8TCEN;
2774 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0);
2775 reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
2780 IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
2783 /* VLNCTRL: enable vlan filtering and allow all vlan tags through */
2784 vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2785 vlanctrl |= IXGBE_VLNCTRL_VFE ; /* enable vlan filters */
2786 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl);
2788 /* VFTA - enable all vlan filters */
2789 for (i = 0; i < NUM_VFTA_REGISTERS; i++) {
2790 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF);
2794 * Configure Rx packet plane (recycle mode; WSP) and
2797 reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC;
2798 IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
2804 ixgbe_dcb_hw_arbite_rx_config(struct ixgbe_hw *hw, uint16_t *refill,
2805 uint16_t *max,uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
2807 switch (hw->mac.type) {
2808 case ixgbe_mac_82598EB:
2809 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
2811 case ixgbe_mac_82599EB:
2812 case ixgbe_mac_X540:
2813 ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id,
2822 ixgbe_dcb_hw_arbite_tx_config(struct ixgbe_hw *hw, uint16_t *refill, uint16_t *max,
2823 uint8_t *bwg_id, uint8_t *tsa, uint8_t *map)
2825 switch (hw->mac.type) {
2826 case ixgbe_mac_82598EB:
2827 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,tsa);
2828 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,tsa);
2830 case ixgbe_mac_82599EB:
2831 case ixgbe_mac_X540:
2832 ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,tsa);
2833 ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,tsa, map);
2840 #define DCB_RX_CONFIG 1
2841 #define DCB_TX_CONFIG 1
2842 #define DCB_TX_PB 1024
2844 * ixgbe_dcb_hw_configure - Enable DCB and configure
2845 * general DCB in VT mode and non-VT mode parameters
2846 * @dev: pointer to rte_eth_dev structure
2847 * @dcb_config: pointer to ixgbe_dcb_config structure
2850 ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
2851 struct ixgbe_dcb_config *dcb_config)
2854 uint8_t i,pfc_en,nb_tcs;
2856 uint8_t config_dcb_rx = 0;
2857 uint8_t config_dcb_tx = 0;
2858 uint8_t tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2859 uint8_t bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2860 uint16_t refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2861 uint16_t max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2862 uint8_t map[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0};
2863 struct ixgbe_dcb_tc_config *tc;
2864 uint32_t max_frame = dev->data->max_frame_size;
2865 struct ixgbe_hw *hw =
2866 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
2868 switch(dev->data->dev_conf.rxmode.mq_mode){
2869 case ETH_MQ_RX_VMDQ_DCB:
2870 dcb_config->vt_mode = true;
2871 if (hw->mac.type != ixgbe_mac_82598EB) {
2872 config_dcb_rx = DCB_RX_CONFIG;
2874 *get dcb and VT rx configuration parameters
2877 ixgbe_vmdq_dcb_rx_config(dev,dcb_config);
2878 /*Configure general VMDQ and DCB RX parameters*/
2879 ixgbe_vmdq_dcb_configure(dev);
2883 dcb_config->vt_mode = false;
2884 config_dcb_rx = DCB_RX_CONFIG;
2885 /* Get dcb TX configuration parameters from rte_eth_conf */
2886 ixgbe_dcb_rx_config(dev,dcb_config);
2887 /*Configure general DCB RX parameters*/
2888 ixgbe_dcb_rx_hw_config(hw, dcb_config);
2891 PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration\n");
2894 switch (dev->data->dev_conf.txmode.mq_mode) {
2895 case ETH_MQ_TX_VMDQ_DCB:
2896 dcb_config->vt_mode = true;
2897 config_dcb_tx = DCB_TX_CONFIG;
2898 /* get DCB and VT TX configuration parameters from rte_eth_conf */
2899 ixgbe_dcb_vt_tx_config(dev,dcb_config);
2900 /*Configure general VMDQ and DCB TX parameters*/
2901 ixgbe_vmdq_dcb_hw_tx_config(dev,dcb_config);
2905 dcb_config->vt_mode = false;
2906 config_dcb_tx = DCB_TX_CONFIG;
2907 /*get DCB TX configuration parameters from rte_eth_conf*/
2908 ixgbe_dcb_tx_config(dev,dcb_config);
2909 /*Configure general DCB TX parameters*/
2910 ixgbe_dcb_tx_hw_config(hw, dcb_config);
2913 PMD_INIT_LOG(ERR, "Incorrect DCB TX mode configuration\n");
2917 nb_tcs = dcb_config->num_tcs.pfc_tcs;
2919 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_RX_CONFIG, map);
2920 if(nb_tcs == ETH_4_TCS) {
2921 /* Avoid un-configured priority mapping to TC0 */
2923 uint8_t mask = 0xFF;
2924 for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES - 4; i++)
2925 mask = (uint8_t)(mask & (~ (1 << map[i])));
2926 for (i = 0; mask && (i < IXGBE_DCB_MAX_TRAFFIC_CLASS); i++) {
2927 if ((mask & 0x1) && (j < ETH_DCB_NUM_USER_PRIORITIES))
2931 /* Re-configure 4 TCs BW */
2932 for (i = 0; i < nb_tcs; i++) {
2933 tc = &dcb_config->tc_config[i];
2934 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
2935 (uint8_t)(100 / nb_tcs);
2936 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
2937 (uint8_t)(100 / nb_tcs);
2939 for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
2940 tc = &dcb_config->tc_config[i];
2941 tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0;
2942 tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0;
2947 /* Set RX buffer size */
2948 pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs);
2949 uint32_t rxpbsize = pbsize << IXGBE_RXPBSIZE_SHIFT;
2950 for (i = 0 ; i < nb_tcs; i++) {
2951 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize);
2953 /* zero alloc all unused TCs */
2954 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2955 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
2959 /* Only support an equally distributed Tx packet buffer strategy. */
2960 uint32_t txpktsize = IXGBE_TXPBSIZE_MAX / nb_tcs;
2961 uint32_t txpbthresh = (txpktsize / DCB_TX_PB) - IXGBE_TXPKT_SIZE_MAX;
2962 for (i = 0; i < nb_tcs; i++) {
2963 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
2964 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
2966 /* Clear unused TCs, if any, to zero buffer size*/
2967 for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
2968 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
2969 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
2973 /*Calculates traffic class credits*/
2974 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
2975 IXGBE_DCB_TX_CONFIG);
2976 ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame,
2977 IXGBE_DCB_RX_CONFIG);
2980 /* Unpack CEE standard containers */
2981 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_RX_CONFIG, refill);
2982 ixgbe_dcb_unpack_max_cee(dcb_config, max);
2983 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_RX_CONFIG, bwgid);
2984 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_RX_CONFIG, tsa);
2985 /* Configure PG(ETS) RX */
2986 ixgbe_dcb_hw_arbite_rx_config(hw,refill,max,bwgid,tsa,map);
2990 /* Unpack CEE standard containers */
2991 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill);
2992 ixgbe_dcb_unpack_max_cee(dcb_config, max);
2993 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid);
2994 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa);
2995 /* Configure PG(ETS) TX */
2996 ixgbe_dcb_hw_arbite_tx_config(hw,refill,max,bwgid,tsa,map);
2999 /*Configure queue statistics registers*/
3000 ixgbe_dcb_config_tc_stats_82599(hw, dcb_config);
3002 /* Check if the PFC is supported */
3003 if(dev->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) {
3004 pbsize = (uint16_t) (NIC_RX_BUFFER_SIZE / nb_tcs);
3005 for (i = 0; i < nb_tcs; i++) {
3007 * If the TC count is 8,and the default high_water is 48,
3008 * the low_water is 16 as default.
3010 hw->fc.high_water[i] = (pbsize * 3 ) / 4;
3011 hw->fc.low_water[i] = pbsize / 4;
3012 /* Enable pfc for this TC */
3013 tc = &dcb_config->tc_config[i];
3014 tc->pfc = ixgbe_dcb_pfc_enabled;
3016 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en);
3017 if(dcb_config->num_tcs.pfc_tcs == ETH_4_TCS)
3019 ret = ixgbe_dcb_config_pfc(hw, pfc_en, map);
3026 * ixgbe_configure_dcb - Configure DCB Hardware
3027 * @dev: pointer to rte_eth_dev
3029 void ixgbe_configure_dcb(struct rte_eth_dev *dev)
3031 struct ixgbe_dcb_config *dcb_cfg =
3032 IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
3033 struct rte_eth_conf *dev_conf = &(dev->data->dev_conf);
3035 PMD_INIT_FUNC_TRACE();
3037 /* check support mq_mode for DCB */
3038 if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) &&
3039 (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB))
3042 if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES)
3045 /** Configure DCB hardware **/
3046 ixgbe_dcb_hw_configure(dev,dcb_cfg);
3052 ixgbe_alloc_rx_queue_mbufs(struct igb_rx_queue *rxq)
3054 struct igb_rx_entry *rxe = rxq->sw_ring;
3058 /* Initialize software ring entries */
3059 for (i = 0; i < rxq->nb_rx_desc; i++) {
3060 volatile union ixgbe_adv_rx_desc *rxd;
3061 struct rte_mbuf *mbuf = rte_rxmbuf_alloc(rxq->mb_pool);
3063 PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u\n",
3064 (unsigned) rxq->queue_id);
3068 rte_mbuf_refcnt_set(mbuf, 1);
3069 mbuf->type = RTE_MBUF_PKT;
3070 mbuf->pkt.next = NULL;
3071 mbuf->pkt.data = (char *)mbuf->buf_addr + RTE_PKTMBUF_HEADROOM;
3072 mbuf->pkt.nb_segs = 1;
3073 mbuf->pkt.in_port = rxq->port_id;
3076 rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(mbuf));
3077 rxd = &rxq->rx_ring[i];
3078 rxd->read.hdr_addr = dma_addr;
3079 rxd->read.pkt_addr = dma_addr;
3087 ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
3089 struct ixgbe_hw *hw =
3090 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3092 if (hw->mac.type == ixgbe_mac_82598EB)
3095 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3097 * SRIOV inactive scheme
3098 * any DCB/RSS w/o VMDq multi-queue setting
3100 if (dev->data->nb_rx_queues > 1)
3101 switch (dev->data->dev_conf.rxmode.mq_mode) {
3102 case ETH_MQ_RX_NONE:
3103 /* if mq_mode not assign, we use rss mode.*/
3105 ixgbe_rss_configure(dev);
3108 case ETH_MQ_RX_VMDQ_DCB:
3109 ixgbe_vmdq_dcb_configure(dev);
3112 default: ixgbe_rss_disable(dev);
3115 ixgbe_rss_disable(dev);
3117 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3119 * SRIOV active scheme
3120 * FIXME if support DCB/RSS together with VMDq & SRIOV
3123 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQEN);
3127 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQRT4TCEN);
3131 IXGBE_WRITE_REG(hw, IXGBE_MRQC, IXGBE_MRQC_VMDQRT8TCEN);
3134 RTE_LOG(ERR, PMD, "invalid pool number in IOV mode\n");
3142 ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev)
3144 struct ixgbe_hw *hw =
3145 IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3149 if (hw->mac.type == ixgbe_mac_82598EB)
3152 /* disable arbiter before setting MTQC */
3153 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3154 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3155 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3157 if (RTE_ETH_DEV_SRIOV(dev).active == 0) {
3159 * SRIOV inactive scheme
3160 * any DCB w/o VMDq multi-queue setting
3162 mtqc = IXGBE_MTQC_64Q_1PB;
3164 switch (RTE_ETH_DEV_SRIOV(dev).active) {
3167 * SRIOV active scheme
3168 * FIXME if support DCB together with VMDq & SRIOV
3171 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
3174 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_32VF;
3177 mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_RT_ENA |
3181 mtqc = IXGBE_MTQC_64Q_1PB;
3182 RTE_LOG(ERR, PMD, "invalid pool number in IOV mode\n");
3186 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3188 /* re-enable arbiter */
3189 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3190 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3196 * Initializes Receive Unit.
3199 ixgbe_dev_rx_init(struct rte_eth_dev *dev)
3201 struct ixgbe_hw *hw;
3202 struct igb_rx_queue *rxq;
3203 struct rte_pktmbuf_pool_private *mbp_priv;
3216 PMD_INIT_FUNC_TRACE();
3217 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3220 * Make sure receives are disabled while setting
3221 * up the RX context (registers, descriptor rings, etc.).
3223 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3224 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3226 /* Enable receipt of broadcasted frames */
3227 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3228 fctrl |= IXGBE_FCTRL_BAM;
3229 fctrl |= IXGBE_FCTRL_DPF;
3230 fctrl |= IXGBE_FCTRL_PMCF;
3231 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
3234 * Configure CRC stripping, if any.
3236 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3237 if (dev->data->dev_conf.rxmode.hw_strip_crc)
3238 hlreg0 |= IXGBE_HLREG0_RXCRCSTRP;
3240 hlreg0 &= ~IXGBE_HLREG0_RXCRCSTRP;
3243 * Configure jumbo frame support, if any.
3245 if (dev->data->dev_conf.rxmode.jumbo_frame == 1) {
3246 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
3247 maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
3248 maxfrs &= 0x0000FFFF;
3249 maxfrs |= (dev->data->dev_conf.rxmode.max_rx_pkt_len << 16);
3250 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs);
3252 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
3254 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3256 /* Setup RX queues */
3257 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3258 rxq = dev->data->rx_queues[i];
3260 /* Allocate buffers for descriptor rings */
3261 ret = ixgbe_alloc_rx_queue_mbufs(rxq);
3266 * Reset crc_len in case it was changed after queue setup by a
3267 * call to configure.
3269 rxq->crc_len = (uint8_t)
3270 ((dev->data->dev_conf.rxmode.hw_strip_crc) ? 0 :
3273 /* Setup the Base and Length of the Rx Descriptor Rings */
3274 bus_addr = rxq->rx_ring_phys_addr;
3275 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(rxq->reg_idx),
3276 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3277 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(rxq->reg_idx),
3278 (uint32_t)(bus_addr >> 32));
3279 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(rxq->reg_idx),
3280 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
3281 IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0);
3282 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), 0);
3284 /* Configure the SRRCTL register */
3285 #ifdef RTE_HEADER_SPLIT_ENABLE
3287 * Configure Header Split
3289 if (dev->data->dev_conf.rxmode.header_split) {
3290 if (hw->mac.type == ixgbe_mac_82599EB) {
3291 /* Must setup the PSRTYPE register */
3293 psrtype = IXGBE_PSRTYPE_TCPHDR |
3294 IXGBE_PSRTYPE_UDPHDR |
3295 IXGBE_PSRTYPE_IPV4HDR |
3296 IXGBE_PSRTYPE_IPV6HDR;
3297 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
3299 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
3300 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
3301 IXGBE_SRRCTL_BSIZEHDR_MASK);
3302 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
3305 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
3307 /* Set if packets are dropped when no descriptors available */
3309 srrctl |= IXGBE_SRRCTL_DROP_EN;
3312 * Configure the RX buffer size in the BSIZEPACKET field of
3313 * the SRRCTL register of the queue.
3314 * The value is in 1 KB resolution. Valid values can be from
3317 mbp_priv = (struct rte_pktmbuf_pool_private *)
3318 ((char *)rxq->mb_pool + sizeof(struct rte_mempool));
3319 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
3320 RTE_PKTMBUF_HEADROOM);
3321 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
3322 IXGBE_SRRCTL_BSIZEPKT_MASK);
3323 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
3325 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
3326 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
3328 /* It adds dual VLAN length for supporting dual VLAN */
3329 if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
3330 2 * IXGBE_VLAN_TAG_SIZE) > buf_size){
3331 dev->data->scattered_rx = 1;
3332 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3337 * Device configured with multiple RX queues.
3339 ixgbe_dev_mq_rx_configure(dev);
3342 * Setup the Checksum Register.
3343 * Disable Full-Packet Checksum which is mutually exclusive with RSS.
3344 * Enable IP/L4 checkum computation by hardware if requested to do so.
3346 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
3347 rxcsum |= IXGBE_RXCSUM_PCSD;
3348 if (dev->data->dev_conf.rxmode.hw_ip_checksum)
3349 rxcsum |= IXGBE_RXCSUM_IPPCSE;
3351 rxcsum &= ~IXGBE_RXCSUM_IPPCSE;
3353 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
3355 if (hw->mac.type == ixgbe_mac_82599EB) {
3356 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
3357 if (dev->data->dev_conf.rxmode.hw_strip_crc)
3358 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
3360 rdrxctl &= ~IXGBE_RDRXCTL_CRCSTRIP;
3361 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
3362 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3369 * Initializes Transmit Unit.
3372 ixgbe_dev_tx_init(struct rte_eth_dev *dev)
3374 struct ixgbe_hw *hw;
3375 struct igb_tx_queue *txq;
3381 PMD_INIT_FUNC_TRACE();
3382 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3384 /* Enable TX CRC (checksum offload requirement) */
3385 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3386 hlreg0 |= IXGBE_HLREG0_TXCRCEN;
3387 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3389 /* Setup the Base and Length of the Tx Descriptor Rings */
3390 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3391 txq = dev->data->tx_queues[i];
3393 bus_addr = txq->tx_ring_phys_addr;
3394 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(txq->reg_idx),
3395 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3396 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(txq->reg_idx),
3397 (uint32_t)(bus_addr >> 32));
3398 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(txq->reg_idx),
3399 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
3400 /* Setup the HW Tx Head and TX Tail descriptor pointers */
3401 IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0);
3402 IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0);
3405 * Disable Tx Head Writeback RO bit, since this hoses
3406 * bookkeeping if things aren't delivered in order.
3408 switch (hw->mac.type) {
3409 case ixgbe_mac_82598EB:
3410 txctrl = IXGBE_READ_REG(hw,
3411 IXGBE_DCA_TXCTRL(txq->reg_idx));
3412 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
3413 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(txq->reg_idx),
3417 case ixgbe_mac_82599EB:
3418 case ixgbe_mac_X540:
3420 txctrl = IXGBE_READ_REG(hw,
3421 IXGBE_DCA_TXCTRL_82599(txq->reg_idx));
3422 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
3423 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(txq->reg_idx),
3429 /* Device configured with multiple TX queues. */
3430 ixgbe_dev_mq_tx_configure(dev);
3434 * Start Transmit and Receive Units.
3437 ixgbe_dev_rxtx_start(struct rte_eth_dev *dev)
3439 struct ixgbe_hw *hw;
3440 struct igb_tx_queue *txq;
3441 struct igb_rx_queue *rxq;
3449 PMD_INIT_FUNC_TRACE();
3450 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3452 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3453 txq = dev->data->tx_queues[i];
3454 /* Setup Transmit Threshold Registers */
3455 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3456 txdctl |= txq->pthresh & 0x7F;
3457 txdctl |= ((txq->hthresh & 0x7F) << 8);
3458 txdctl |= ((txq->wthresh & 0x7F) << 16);
3459 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
3462 if (hw->mac.type != ixgbe_mac_82598EB) {
3463 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3464 dmatxctl |= IXGBE_DMATXCTL_TE;
3465 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3468 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3469 txq = dev->data->tx_queues[i];
3470 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3471 txdctl |= IXGBE_TXDCTL_ENABLE;
3472 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl);
3474 /* Wait until TX Enable ready */
3475 if (hw->mac.type == ixgbe_mac_82599EB) {
3479 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx));
3480 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
3482 PMD_INIT_LOG(ERR, "Could not enable "
3483 "Tx Queue %d\n", i);
3486 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3487 rxq = dev->data->rx_queues[i];
3488 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3489 rxdctl |= IXGBE_RXDCTL_ENABLE;
3490 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl);
3492 /* Wait until RX Enable ready */
3496 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx));
3497 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3499 PMD_INIT_LOG(ERR, "Could not enable "
3500 "Rx Queue %d\n", i);
3502 IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1);
3505 /* Enable Receive engine */
3506 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3507 if (hw->mac.type == ixgbe_mac_82598EB)
3508 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3509 rxctrl |= IXGBE_RXCTRL_RXEN;
3510 hw->mac.ops.enable_rx_dma(hw, rxctrl);
3515 * [VF] Initializes Receive Unit.
3518 ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
3520 struct ixgbe_hw *hw;
3521 struct igb_rx_queue *rxq;
3522 struct rte_pktmbuf_pool_private *mbp_priv;
3529 PMD_INIT_FUNC_TRACE();
3530 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3532 /* Setup RX queues */
3533 dev->rx_pkt_burst = ixgbe_recv_pkts;
3534 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3535 rxq = dev->data->rx_queues[i];
3537 /* Allocate buffers for descriptor rings */
3538 ret = ixgbe_alloc_rx_queue_mbufs(rxq);
3542 /* Setup the Base and Length of the Rx Descriptor Rings */
3543 bus_addr = rxq->rx_ring_phys_addr;
3545 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i),
3546 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3547 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i),
3548 (uint32_t)(bus_addr >> 32));
3549 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i),
3550 rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc));
3551 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
3552 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
3555 /* Configure the SRRCTL register */
3556 #ifdef RTE_HEADER_SPLIT_ENABLE
3558 * Configure Header Split
3560 if (dev->data->dev_conf.rxmode.header_split) {
3562 /* Must setup the PSRTYPE register */
3564 psrtype = IXGBE_PSRTYPE_TCPHDR |
3565 IXGBE_PSRTYPE_UDPHDR |
3566 IXGBE_PSRTYPE_IPV4HDR |
3567 IXGBE_PSRTYPE_IPV6HDR;
3569 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE(i), psrtype);
3571 srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size <<
3572 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
3573 IXGBE_SRRCTL_BSIZEHDR_MASK);
3574 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
3577 srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
3579 /* Set if packets are dropped when no descriptors available */
3581 srrctl |= IXGBE_SRRCTL_DROP_EN;
3584 * Configure the RX buffer size in the BSIZEPACKET field of
3585 * the SRRCTL register of the queue.
3586 * The value is in 1 KB resolution. Valid values can be from
3589 mbp_priv = (struct rte_pktmbuf_pool_private *)
3590 ((char *)rxq->mb_pool + sizeof(struct rte_mempool));
3591 buf_size = (uint16_t) (mbp_priv->mbuf_data_room_size -
3592 RTE_PKTMBUF_HEADROOM);
3593 srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
3594 IXGBE_SRRCTL_BSIZEPKT_MASK);
3597 * VF modification to write virtual function SRRCTL register
3599 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), srrctl);
3601 buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
3602 IXGBE_SRRCTL_BSIZEPKT_SHIFT);
3604 /* It adds dual VLAN length for supporting dual VLAN */
3605 if ((dev->data->dev_conf.rxmode.max_rx_pkt_len +
3606 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) {
3607 dev->data->scattered_rx = 1;
3608 dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
3616 * [VF] Initializes Transmit Unit.
3619 ixgbevf_dev_tx_init(struct rte_eth_dev *dev)
3621 struct ixgbe_hw *hw;
3622 struct igb_tx_queue *txq;
3627 PMD_INIT_FUNC_TRACE();
3628 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3630 /* Setup the Base and Length of the Tx Descriptor Rings */
3631 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3632 txq = dev->data->tx_queues[i];
3633 bus_addr = txq->tx_ring_phys_addr;
3634 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i),
3635 (uint32_t)(bus_addr & 0x00000000ffffffffULL));
3636 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i),
3637 (uint32_t)(bus_addr >> 32));
3638 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i),
3639 txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc));
3640 /* Setup the HW Tx Head and TX Tail descriptor pointers */
3641 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
3642 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
3645 * Disable Tx Head Writeback RO bit, since this hoses
3646 * bookkeeping if things aren't delivered in order.
3648 txctrl = IXGBE_READ_REG(hw,
3649 IXGBE_VFDCA_TXCTRL(i));
3650 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
3651 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i),
3657 * [VF] Start Transmit and Receive Units.
3660 ixgbevf_dev_rxtx_start(struct rte_eth_dev *dev)
3662 struct ixgbe_hw *hw;
3663 struct igb_tx_queue *txq;
3664 struct igb_rx_queue *rxq;
3670 PMD_INIT_FUNC_TRACE();
3671 hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
3673 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3674 txq = dev->data->tx_queues[i];
3675 /* Setup Transmit Threshold Registers */
3676 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
3677 txdctl |= txq->pthresh & 0x7F;
3678 txdctl |= ((txq->hthresh & 0x7F) << 8);
3679 txdctl |= ((txq->wthresh & 0x7F) << 16);
3680 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
3683 for (i = 0; i < dev->data->nb_tx_queues; i++) {
3685 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
3686 txdctl |= IXGBE_TXDCTL_ENABLE;
3687 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
3690 /* Wait until TX Enable ready */
3693 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
3694 } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE));
3696 PMD_INIT_LOG(ERR, "Could not enable "
3697 "Tx Queue %d\n", i);
3699 for (i = 0; i < dev->data->nb_rx_queues; i++) {
3701 rxq = dev->data->rx_queues[i];
3703 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
3704 rxdctl |= IXGBE_RXDCTL_ENABLE;
3705 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl);
3707 /* Wait until RX Enable ready */
3711 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
3712 } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3714 PMD_INIT_LOG(ERR, "Could not enable "
3715 "Rx Queue %d\n", i);
3717 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), rxq->nb_rx_desc - 1);