1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2014-2018 Broadcom
8 #include <rte_byteorder.h>
9 #include <rte_malloc.h>
13 #include "bnxt_ring.h"
16 #include "hsi_struct_def_dpdk.h"
23 void bnxt_free_tx_rings(struct bnxt *bp)
27 for (i = 0; i < (int)bp->tx_nr_rings; i++) {
28 struct bnxt_tx_queue *txq = bp->tx_queues[i];
33 bnxt_free_ring(txq->tx_ring->tx_ring_struct);
34 rte_free(txq->tx_ring->tx_ring_struct);
35 rte_free(txq->tx_ring);
37 bnxt_free_ring(txq->cp_ring->cp_ring_struct);
38 rte_free(txq->cp_ring->cp_ring_struct);
39 rte_free(txq->cp_ring);
42 bp->tx_queues[i] = NULL;
46 int bnxt_init_one_tx_ring(struct bnxt_tx_queue *txq)
48 struct bnxt_tx_ring_info *txr = txq->tx_ring;
49 struct bnxt_ring *ring = txr->tx_ring_struct;
51 txq->tx_wake_thresh = ring->ring_size / 2;
52 ring->fw_ring_id = INVALID_HW_RING_ID;
57 int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id)
59 struct bnxt_cp_ring_info *cpr;
60 struct bnxt_cp_ring_info *nqr;
61 struct bnxt_tx_ring_info *txr;
62 struct bnxt_ring *ring;
64 txr = rte_zmalloc_socket("bnxt_tx_ring",
65 sizeof(struct bnxt_tx_ring_info),
66 RTE_CACHE_LINE_SIZE, socket_id);
71 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
72 sizeof(struct bnxt_ring),
73 RTE_CACHE_LINE_SIZE, socket_id);
76 txr->tx_ring_struct = ring;
77 ring->ring_size = rte_align32pow2(txq->nb_tx_desc);
78 ring->ring_mask = ring->ring_size - 1;
79 ring->bd = (void *)txr->tx_desc_ring;
80 ring->bd_dma = txr->tx_desc_mapping;
81 ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_tx_bd);
82 ring->vmem = (void **)&txr->tx_buf_ring;
84 cpr = rte_zmalloc_socket("bnxt_tx_ring",
85 sizeof(struct bnxt_cp_ring_info),
86 RTE_CACHE_LINE_SIZE, socket_id);
91 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
92 sizeof(struct bnxt_ring),
93 RTE_CACHE_LINE_SIZE, socket_id);
96 cpr->cp_ring_struct = ring;
97 ring->ring_size = txr->tx_ring_struct->ring_size;
98 ring->ring_mask = ring->ring_size - 1;
99 ring->bd = (void *)cpr->cp_desc_ring;
100 ring->bd_dma = cpr->cp_desc_mapping;
104 if (BNXT_HAS_NQ(txq->bp)) {
105 nqr = rte_zmalloc_socket("bnxt_tx_ring_nq",
106 sizeof(struct bnxt_cp_ring_info),
107 RTE_CACHE_LINE_SIZE, socket_id);
113 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
114 sizeof(struct bnxt_ring),
115 RTE_CACHE_LINE_SIZE, socket_id);
119 nqr->cp_ring_struct = ring;
120 ring->ring_size = txr->tx_ring_struct->ring_size;
121 ring->ring_mask = ring->ring_size - 1;
122 ring->bd = (void *)nqr->cp_desc_ring;
123 ring->bd_dma = nqr->cp_desc_mapping;
131 static uint16_t bnxt_start_xmit(struct rte_mbuf *tx_pkt,
132 struct bnxt_tx_queue *txq,
134 struct tx_bd_long **last_txbd)
136 struct bnxt_tx_ring_info *txr = txq->tx_ring;
137 uint32_t outer_tpid_bd = 0;
138 struct tx_bd_long *txbd;
139 struct tx_bd_long_hi *txbd1 = NULL;
140 uint32_t vlan_tag_flags, cfa_action;
141 bool long_bd = false;
142 unsigned short nr_bds = 0;
143 struct rte_mbuf *m_seg;
144 struct bnxt_sw_tx_bd *tx_buf;
145 static const uint32_t lhint_arr[4] = {
146 TX_BD_LONG_FLAGS_LHINT_LT512,
147 TX_BD_LONG_FLAGS_LHINT_LT1K,
148 TX_BD_LONG_FLAGS_LHINT_LT2K,
149 TX_BD_LONG_FLAGS_LHINT_LT2K
152 if (unlikely(is_bnxt_in_error(txq->bp)))
155 if (tx_pkt->ol_flags & (PKT_TX_TCP_SEG | PKT_TX_TCP_CKSUM |
156 PKT_TX_UDP_CKSUM | PKT_TX_IP_CKSUM |
157 PKT_TX_VLAN_PKT | PKT_TX_OUTER_IP_CKSUM |
158 PKT_TX_TUNNEL_GRE | PKT_TX_TUNNEL_VXLAN |
159 PKT_TX_TUNNEL_GENEVE | PKT_TX_IEEE1588_TMST |
163 nr_bds = long_bd + tx_pkt->nb_segs;
164 if (unlikely(bnxt_tx_avail(txq) < nr_bds))
167 /* Check if number of Tx descriptors is above HW limit */
168 if (unlikely(nr_bds > BNXT_MAX_TSO_SEGS)) {
170 "Num descriptors %d exceeds HW limit\n", nr_bds);
174 /* If packet length is less than minimum packet size, pad it */
175 if (unlikely(rte_pktmbuf_pkt_len(tx_pkt) < BNXT_MIN_PKT_SIZE)) {
176 uint8_t pad = BNXT_MIN_PKT_SIZE - rte_pktmbuf_pkt_len(tx_pkt);
177 char *seg = rte_pktmbuf_append(tx_pkt, pad);
181 "Failed to pad mbuf by %d bytes\n",
186 /* Note: data_len, pkt len are updated in rte_pktmbuf_append */
190 /* Check non zero data_len */
191 RTE_VERIFY(tx_pkt->data_len);
193 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
194 tx_buf->mbuf = tx_pkt;
195 tx_buf->nr_bds = nr_bds;
197 txbd = &txr->tx_desc_ring[txr->tx_prod];
198 txbd->opaque = *coal_pkts;
199 txbd->flags_type = nr_bds << TX_BD_LONG_FLAGS_BD_CNT_SFT;
200 txbd->flags_type |= TX_BD_SHORT_FLAGS_COAL_NOW;
201 txbd->flags_type |= TX_BD_LONG_FLAGS_NO_CMPL;
202 txbd->len = tx_pkt->data_len;
203 if (tx_pkt->pkt_len >= 2014)
204 txbd->flags_type |= TX_BD_LONG_FLAGS_LHINT_GTE2K;
206 txbd->flags_type |= lhint_arr[tx_pkt->pkt_len >> 9];
207 txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(tx_buf->mbuf));
211 txbd->flags_type |= TX_BD_LONG_TYPE_TX_BD_LONG;
214 /* HW can accelerate only outer vlan in QinQ mode */
215 if (tx_buf->mbuf->ol_flags & PKT_TX_QINQ_PKT) {
216 vlan_tag_flags = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
217 tx_buf->mbuf->vlan_tci_outer;
218 outer_tpid_bd = txq->bp->outer_tpid_bd &
219 BNXT_OUTER_TPID_BD_MASK;
220 vlan_tag_flags |= outer_tpid_bd;
221 } else if (tx_buf->mbuf->ol_flags & PKT_TX_VLAN_PKT) {
222 /* shurd: Should this mask at
223 * TX_BD_LONG_CFA_META_VLAN_VID_MASK?
225 vlan_tag_flags = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
226 tx_buf->mbuf->vlan_tci;
227 /* Currently supports 8021Q, 8021AD vlan offloads
228 * QINQ1, QINQ2, QINQ3 vlan headers are deprecated
230 /* DPDK only supports 802.11q VLAN packets */
232 TX_BD_LONG_CFA_META_VLAN_TPID_TPID8100;
235 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
237 txbd1 = (struct tx_bd_long_hi *)
238 &txr->tx_desc_ring[txr->tx_prod];
240 txbd1->cfa_meta = vlan_tag_flags;
241 txbd1->cfa_action = cfa_action;
243 if (tx_pkt->ol_flags & PKT_TX_TCP_SEG) {
247 txbd1->lflags |= TX_BD_LONG_LFLAGS_LSO |
248 TX_BD_LONG_LFLAGS_T_IPID;
249 hdr_size = tx_pkt->l2_len + tx_pkt->l3_len +
251 hdr_size += (tx_pkt->ol_flags & PKT_TX_TUNNEL_MASK) ?
252 tx_pkt->outer_l2_len +
253 tx_pkt->outer_l3_len : 0;
254 /* The hdr_size is multiple of 16bit units not 8bit.
257 txbd1->hdr_size = hdr_size >> 1;
258 txbd1->mss = tx_pkt->tso_segsz;
259 RTE_VERIFY(txbd1->mss);
261 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_TCP_UDP_CKSUM) ==
262 PKT_TX_OIP_IIP_TCP_UDP_CKSUM) {
263 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
264 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
266 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_TCP_CKSUM) ==
267 PKT_TX_OIP_IIP_TCP_CKSUM) {
268 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
269 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
271 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_UDP_CKSUM) ==
272 PKT_TX_OIP_IIP_UDP_CKSUM) {
273 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
274 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
276 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_TCP_UDP_CKSUM) ==
277 PKT_TX_IIP_TCP_UDP_CKSUM) {
278 /* (Inner) IP, (Inner) TCP/UDP CSO */
279 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
281 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_UDP_CKSUM) ==
282 PKT_TX_IIP_UDP_CKSUM) {
283 /* (Inner) IP, (Inner) TCP/UDP CSO */
284 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
286 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_TCP_CKSUM) ==
287 PKT_TX_IIP_TCP_CKSUM) {
288 /* (Inner) IP, (Inner) TCP/UDP CSO */
289 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
291 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_TCP_UDP_CKSUM) ==
292 PKT_TX_OIP_TCP_UDP_CKSUM) {
293 /* Outer IP, (Inner) TCP/UDP CSO */
294 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
296 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_UDP_CKSUM) ==
297 PKT_TX_OIP_UDP_CKSUM) {
298 /* Outer IP, (Inner) TCP/UDP CSO */
299 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
301 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_TCP_CKSUM) ==
302 PKT_TX_OIP_TCP_CKSUM) {
303 /* Outer IP, (Inner) TCP/UDP CSO */
304 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
306 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_CKSUM) ==
307 PKT_TX_OIP_IIP_CKSUM) {
308 /* Outer IP, Inner IP CSO */
309 txbd1->lflags |= TX_BD_FLG_TIP_IP_CHKSUM;
311 } else if ((tx_pkt->ol_flags & PKT_TX_TCP_UDP_CKSUM) ==
312 PKT_TX_TCP_UDP_CKSUM) {
314 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
316 } else if ((tx_pkt->ol_flags & PKT_TX_TCP_CKSUM) ==
319 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
321 } else if ((tx_pkt->ol_flags & PKT_TX_UDP_CKSUM) ==
324 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
326 } else if ((tx_pkt->ol_flags & PKT_TX_IP_CKSUM) ==
329 txbd1->lflags |= TX_BD_LONG_LFLAGS_IP_CHKSUM;
331 } else if ((tx_pkt->ol_flags & PKT_TX_OUTER_IP_CKSUM) ==
332 PKT_TX_OUTER_IP_CKSUM) {
334 txbd1->lflags |= TX_BD_LONG_LFLAGS_T_IP_CHKSUM;
336 } else if ((tx_pkt->ol_flags & PKT_TX_IEEE1588_TMST) ==
337 PKT_TX_IEEE1588_TMST) {
339 txbd1->lflags |= TX_BD_LONG_LFLAGS_STAMP;
343 txbd->flags_type |= TX_BD_SHORT_TYPE_TX_BD_SHORT;
346 m_seg = tx_pkt->next;
348 /* Check non zero data_len */
349 RTE_VERIFY(m_seg->data_len);
350 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
351 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
352 tx_buf->mbuf = m_seg;
354 txbd = &txr->tx_desc_ring[txr->tx_prod];
355 txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(m_seg));
356 txbd->flags_type = TX_BD_SHORT_TYPE_TX_BD_SHORT;
357 txbd->len = m_seg->data_len;
362 txbd->flags_type |= TX_BD_LONG_FLAGS_PACKET_END;
364 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
369 static void bnxt_tx_cmp(struct bnxt_tx_queue *txq, int nr_pkts)
371 struct bnxt_tx_ring_info *txr = txq->tx_ring;
372 struct rte_mempool *pool = NULL;
373 struct rte_mbuf **free = txq->free;
374 uint16_t cons = txr->tx_cons;
375 unsigned int blk = 0;
378 for (i = 0; i < nr_pkts; i++) {
379 struct rte_mbuf *mbuf;
380 struct bnxt_sw_tx_bd *tx_buf = &txr->tx_buf_ring[cons];
381 unsigned short nr_bds = tx_buf->nr_bds;
383 for (j = 0; j < nr_bds; j++) {
386 cons = RING_NEXT(txr->tx_ring_struct, cons);
387 tx_buf = &txr->tx_buf_ring[cons];
388 if (!mbuf) /* long_bd's tx_buf ? */
391 mbuf = rte_pktmbuf_prefree_seg(mbuf);
395 /* EW - no need to unmap DMA memory? */
397 if (likely(mbuf->pool == pool)) {
398 /* Add mbuf to the bulk free array */
401 /* Found an mbuf from a different pool. Free
402 * mbufs accumulated so far to the previous
405 if (likely(pool != NULL))
406 rte_mempool_put_bulk(pool,
410 /* Start accumulating mbufs in a new pool */
418 rte_mempool_put_bulk(pool, (void *)free, blk);
423 static int bnxt_handle_tx_cp(struct bnxt_tx_queue *txq)
425 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
426 uint32_t raw_cons = cpr->cp_raw_cons;
428 uint32_t nb_tx_pkts = 0;
429 struct tx_cmpl *txcmp;
430 struct cmpl_base *cp_desc_ring = cpr->cp_desc_ring;
431 struct bnxt_ring *cp_ring_struct = cpr->cp_ring_struct;
432 uint32_t ring_mask = cp_ring_struct->ring_mask;
435 if (bnxt_tx_bds_in_hw(txq) < txq->tx_free_thresh)
439 cons = RING_CMPL(ring_mask, raw_cons);
440 txcmp = (struct tx_cmpl *)&cpr->cp_desc_ring[cons];
441 rte_prefetch_non_temporal(&cp_desc_ring[(cons + 2) &
444 if (!CMPL_VALID(txcmp, cpr->valid))
446 opaque = rte_cpu_to_le_32(txcmp->opaque);
447 NEXT_CMPL(cpr, cons, cpr->valid, 1);
448 rte_prefetch0(&cp_desc_ring[cons]);
450 if (CMP_TYPE(txcmp) == TX_CMPL_TYPE_TX_L2)
451 nb_tx_pkts += opaque;
454 "Unhandled CMP type %02x\n",
457 } while (nb_tx_pkts < ring_mask);
460 bnxt_tx_cmp(txq, nb_tx_pkts);
461 cpr->cp_raw_cons = raw_cons;
468 uint16_t bnxt_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
472 uint16_t nb_tx_pkts = 0;
473 uint16_t coal_pkts = 0;
474 struct bnxt_tx_queue *txq = tx_queue;
475 struct tx_bd_long *last_txbd = NULL;
477 /* Handle TX completions */
478 bnxt_handle_tx_cp(txq);
480 /* Tx queue was stopped; wait for it to be restarted */
481 if (unlikely(!txq->tx_started)) {
482 PMD_DRV_LOG(DEBUG, "Tx q stopped;return\n");
486 /* Handle TX burst request */
487 for (nb_tx_pkts = 0; nb_tx_pkts < nb_pkts; nb_tx_pkts++) {
489 rc = bnxt_start_xmit(tx_pkts[nb_tx_pkts], txq,
490 &coal_pkts, &last_txbd);
496 if (likely(nb_tx_pkts)) {
497 /* Request a completion on the last packet */
498 last_txbd->flags_type &= ~TX_BD_LONG_FLAGS_NO_CMPL;
499 bnxt_db_write(&txq->tx_ring->tx_db, txq->tx_ring->tx_prod);
506 * Dummy DPDK callback for TX.
508 * This function is used to temporarily replace the real callback during
509 * unsafe control operations on the queue, or in case of error.
512 bnxt_dummy_xmit_pkts(void *tx_queue __rte_unused,
513 struct rte_mbuf **tx_pkts __rte_unused,
514 uint16_t nb_pkts __rte_unused)
519 int bnxt_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
521 struct bnxt *bp = dev->data->dev_private;
522 struct bnxt_tx_queue *txq = bp->tx_queues[tx_queue_id];
525 rc = is_bnxt_in_error(bp);
529 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
530 txq->tx_started = true;
531 PMD_DRV_LOG(DEBUG, "Tx queue started\n");
536 int bnxt_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
538 struct bnxt *bp = dev->data->dev_private;
539 struct bnxt_tx_queue *txq = bp->tx_queues[tx_queue_id];
542 rc = is_bnxt_in_error(bp);
546 /* Handle TX completions */
547 bnxt_handle_tx_cp(txq);
549 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
550 txq->tx_started = false;
551 PMD_DRV_LOG(DEBUG, "Tx queue stopped\n");