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_tx_ring_info *txr;
61 struct bnxt_ring *ring;
63 txr = rte_zmalloc_socket("bnxt_tx_ring",
64 sizeof(struct bnxt_tx_ring_info),
65 RTE_CACHE_LINE_SIZE, socket_id);
70 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
71 sizeof(struct bnxt_ring),
72 RTE_CACHE_LINE_SIZE, socket_id);
75 txr->tx_ring_struct = ring;
76 ring->ring_size = rte_align32pow2(txq->nb_tx_desc);
77 ring->ring_mask = ring->ring_size - 1;
78 ring->bd = (void *)txr->tx_desc_ring;
79 ring->bd_dma = txr->tx_desc_mapping;
80 ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_tx_bd);
81 ring->vmem = (void **)&txr->tx_buf_ring;
83 cpr = rte_zmalloc_socket("bnxt_tx_ring",
84 sizeof(struct bnxt_cp_ring_info),
85 RTE_CACHE_LINE_SIZE, socket_id);
90 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
91 sizeof(struct bnxt_ring),
92 RTE_CACHE_LINE_SIZE, socket_id);
95 cpr->cp_ring_struct = ring;
96 ring->ring_size = txr->tx_ring_struct->ring_size;
97 ring->ring_mask = ring->ring_size - 1;
98 ring->bd = (void *)cpr->cp_desc_ring;
99 ring->bd_dma = cpr->cp_desc_mapping;
106 static uint16_t bnxt_start_xmit(struct rte_mbuf *tx_pkt,
107 struct bnxt_tx_queue *txq,
109 struct tx_bd_long **last_txbd)
111 struct bnxt_tx_ring_info *txr = txq->tx_ring;
112 uint32_t outer_tpid_bd = 0;
113 struct tx_bd_long *txbd;
114 struct tx_bd_long_hi *txbd1 = NULL;
115 uint32_t vlan_tag_flags, cfa_action;
116 bool long_bd = false;
117 unsigned short nr_bds = 0;
118 struct rte_mbuf *m_seg;
119 struct bnxt_sw_tx_bd *tx_buf;
120 static const uint32_t lhint_arr[4] = {
121 TX_BD_LONG_FLAGS_LHINT_LT512,
122 TX_BD_LONG_FLAGS_LHINT_LT1K,
123 TX_BD_LONG_FLAGS_LHINT_LT2K,
124 TX_BD_LONG_FLAGS_LHINT_LT2K
127 if (unlikely(is_bnxt_in_error(txq->bp)))
130 if (tx_pkt->ol_flags & (PKT_TX_TCP_SEG | PKT_TX_TCP_CKSUM |
131 PKT_TX_UDP_CKSUM | PKT_TX_IP_CKSUM |
132 PKT_TX_VLAN_PKT | PKT_TX_OUTER_IP_CKSUM |
133 PKT_TX_TUNNEL_GRE | PKT_TX_TUNNEL_VXLAN |
134 PKT_TX_TUNNEL_GENEVE | PKT_TX_IEEE1588_TMST |
138 nr_bds = long_bd + tx_pkt->nb_segs;
139 if (unlikely(bnxt_tx_avail(txq) < nr_bds))
142 /* Check if number of Tx descriptors is above HW limit */
143 if (unlikely(nr_bds > BNXT_MAX_TSO_SEGS)) {
145 "Num descriptors %d exceeds HW limit\n", nr_bds);
149 /* If packet length is less than minimum packet size, pad it */
150 if (unlikely(rte_pktmbuf_pkt_len(tx_pkt) < BNXT_MIN_PKT_SIZE)) {
151 uint8_t pad = BNXT_MIN_PKT_SIZE - rte_pktmbuf_pkt_len(tx_pkt);
152 char *seg = rte_pktmbuf_append(tx_pkt, pad);
156 "Failed to pad mbuf by %d bytes\n",
161 /* Note: data_len, pkt len are updated in rte_pktmbuf_append */
165 /* Check non zero data_len */
166 RTE_VERIFY(tx_pkt->data_len);
168 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
169 tx_buf->mbuf = tx_pkt;
170 tx_buf->nr_bds = nr_bds;
172 txbd = &txr->tx_desc_ring[txr->tx_prod];
173 txbd->opaque = *coal_pkts;
174 txbd->flags_type = nr_bds << TX_BD_LONG_FLAGS_BD_CNT_SFT;
175 txbd->flags_type |= TX_BD_SHORT_FLAGS_COAL_NOW;
176 txbd->flags_type |= TX_BD_LONG_FLAGS_NO_CMPL;
177 txbd->len = tx_pkt->data_len;
178 if (tx_pkt->pkt_len >= 2014)
179 txbd->flags_type |= TX_BD_LONG_FLAGS_LHINT_GTE2K;
181 txbd->flags_type |= lhint_arr[tx_pkt->pkt_len >> 9];
182 txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(tx_buf->mbuf));
186 txbd->flags_type |= TX_BD_LONG_TYPE_TX_BD_LONG;
189 /* HW can accelerate only outer vlan in QinQ mode */
190 if (tx_buf->mbuf->ol_flags & PKT_TX_QINQ_PKT) {
191 vlan_tag_flags = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
192 tx_buf->mbuf->vlan_tci_outer;
193 outer_tpid_bd = txq->bp->outer_tpid_bd &
194 BNXT_OUTER_TPID_BD_MASK;
195 vlan_tag_flags |= outer_tpid_bd;
196 } else if (tx_buf->mbuf->ol_flags & PKT_TX_VLAN_PKT) {
197 /* shurd: Should this mask at
198 * TX_BD_LONG_CFA_META_VLAN_VID_MASK?
200 vlan_tag_flags = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
201 tx_buf->mbuf->vlan_tci;
202 /* Currently supports 8021Q, 8021AD vlan offloads
203 * QINQ1, QINQ2, QINQ3 vlan headers are deprecated
205 /* DPDK only supports 802.11q VLAN packets */
207 TX_BD_LONG_CFA_META_VLAN_TPID_TPID8100;
210 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
212 txbd1 = (struct tx_bd_long_hi *)
213 &txr->tx_desc_ring[txr->tx_prod];
215 txbd1->cfa_meta = vlan_tag_flags;
216 txbd1->cfa_action = cfa_action;
218 if (tx_pkt->ol_flags & PKT_TX_TCP_SEG) {
222 txbd1->lflags |= TX_BD_LONG_LFLAGS_LSO |
223 TX_BD_LONG_LFLAGS_T_IPID;
224 hdr_size = tx_pkt->l2_len + tx_pkt->l3_len +
226 hdr_size += (tx_pkt->ol_flags & PKT_TX_TUNNEL_MASK) ?
227 tx_pkt->outer_l2_len +
228 tx_pkt->outer_l3_len : 0;
229 /* The hdr_size is multiple of 16bit units not 8bit.
232 txbd1->hdr_size = hdr_size >> 1;
233 txbd1->mss = tx_pkt->tso_segsz;
234 RTE_VERIFY(txbd1->mss);
236 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_TCP_UDP_CKSUM) ==
237 PKT_TX_OIP_IIP_TCP_UDP_CKSUM) {
238 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
239 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
241 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_TCP_CKSUM) ==
242 PKT_TX_OIP_IIP_TCP_CKSUM) {
243 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
244 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
246 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_UDP_CKSUM) ==
247 PKT_TX_OIP_IIP_UDP_CKSUM) {
248 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
249 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
251 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_TCP_UDP_CKSUM) ==
252 PKT_TX_IIP_TCP_UDP_CKSUM) {
253 /* (Inner) IP, (Inner) TCP/UDP CSO */
254 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
256 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_UDP_CKSUM) ==
257 PKT_TX_IIP_UDP_CKSUM) {
258 /* (Inner) IP, (Inner) TCP/UDP CSO */
259 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
261 } else if ((tx_pkt->ol_flags & PKT_TX_IIP_TCP_CKSUM) ==
262 PKT_TX_IIP_TCP_CKSUM) {
263 /* (Inner) IP, (Inner) TCP/UDP CSO */
264 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
266 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_TCP_UDP_CKSUM) ==
267 PKT_TX_OIP_TCP_UDP_CKSUM) {
268 /* Outer IP, (Inner) TCP/UDP CSO */
269 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
271 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_UDP_CKSUM) ==
272 PKT_TX_OIP_UDP_CKSUM) {
273 /* Outer IP, (Inner) TCP/UDP CSO */
274 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
276 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_TCP_CKSUM) ==
277 PKT_TX_OIP_TCP_CKSUM) {
278 /* Outer IP, (Inner) TCP/UDP CSO */
279 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
281 } else if ((tx_pkt->ol_flags & PKT_TX_OIP_IIP_CKSUM) ==
282 PKT_TX_OIP_IIP_CKSUM) {
283 /* Outer IP, Inner IP CSO */
284 txbd1->lflags |= TX_BD_FLG_TIP_IP_CHKSUM;
286 } else if ((tx_pkt->ol_flags & PKT_TX_TCP_UDP_CKSUM) ==
287 PKT_TX_TCP_UDP_CKSUM) {
289 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
291 } else if ((tx_pkt->ol_flags & PKT_TX_TCP_CKSUM) ==
294 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
296 } else if ((tx_pkt->ol_flags & PKT_TX_UDP_CKSUM) ==
299 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
301 } else if ((tx_pkt->ol_flags & PKT_TX_IP_CKSUM) ==
304 txbd1->lflags |= TX_BD_LONG_LFLAGS_IP_CHKSUM;
306 } else if ((tx_pkt->ol_flags & PKT_TX_OUTER_IP_CKSUM) ==
307 PKT_TX_OUTER_IP_CKSUM) {
309 txbd1->lflags |= TX_BD_LONG_LFLAGS_T_IP_CHKSUM;
311 } else if ((tx_pkt->ol_flags & PKT_TX_IEEE1588_TMST) ==
312 PKT_TX_IEEE1588_TMST) {
314 txbd1->lflags |= TX_BD_LONG_LFLAGS_STAMP;
318 txbd->flags_type |= TX_BD_SHORT_TYPE_TX_BD_SHORT;
321 m_seg = tx_pkt->next;
323 /* Check non zero data_len */
324 RTE_VERIFY(m_seg->data_len);
325 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
326 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
327 tx_buf->mbuf = m_seg;
329 txbd = &txr->tx_desc_ring[txr->tx_prod];
330 txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(m_seg));
331 txbd->flags_type = TX_BD_SHORT_TYPE_TX_BD_SHORT;
332 txbd->len = m_seg->data_len;
337 txbd->flags_type |= TX_BD_LONG_FLAGS_PACKET_END;
339 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
344 static void bnxt_tx_cmp(struct bnxt_tx_queue *txq, int nr_pkts)
346 struct bnxt_tx_ring_info *txr = txq->tx_ring;
347 struct rte_mempool *pool = NULL;
348 struct rte_mbuf **free = txq->free;
349 uint16_t cons = txr->tx_cons;
350 unsigned int blk = 0;
353 for (i = 0; i < nr_pkts; i++) {
354 struct rte_mbuf *mbuf;
355 struct bnxt_sw_tx_bd *tx_buf = &txr->tx_buf_ring[cons];
356 unsigned short nr_bds = tx_buf->nr_bds;
358 for (j = 0; j < nr_bds; j++) {
361 cons = RING_NEXT(txr->tx_ring_struct, cons);
362 tx_buf = &txr->tx_buf_ring[cons];
363 if (!mbuf) /* long_bd's tx_buf ? */
366 mbuf = rte_pktmbuf_prefree_seg(mbuf);
370 /* EW - no need to unmap DMA memory? */
372 if (likely(mbuf->pool == pool)) {
373 /* Add mbuf to the bulk free array */
376 /* Found an mbuf from a different pool. Free
377 * mbufs accumulated so far to the previous
380 if (likely(pool != NULL))
381 rte_mempool_put_bulk(pool,
385 /* Start accumulating mbufs in a new pool */
393 rte_mempool_put_bulk(pool, (void *)free, blk);
398 static int bnxt_handle_tx_cp(struct bnxt_tx_queue *txq)
400 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
401 uint32_t raw_cons = cpr->cp_raw_cons;
403 uint32_t nb_tx_pkts = 0;
404 struct tx_cmpl *txcmp;
405 struct cmpl_base *cp_desc_ring = cpr->cp_desc_ring;
406 struct bnxt_ring *cp_ring_struct = cpr->cp_ring_struct;
407 uint32_t ring_mask = cp_ring_struct->ring_mask;
410 if (bnxt_tx_bds_in_hw(txq) < txq->tx_free_thresh)
414 cons = RING_CMPL(ring_mask, raw_cons);
415 txcmp = (struct tx_cmpl *)&cpr->cp_desc_ring[cons];
416 rte_prefetch_non_temporal(&cp_desc_ring[(cons + 2) &
419 if (!CMPL_VALID(txcmp, cpr->valid))
421 opaque = rte_cpu_to_le_32(txcmp->opaque);
422 NEXT_CMPL(cpr, cons, cpr->valid, 1);
423 rte_prefetch0(&cp_desc_ring[cons]);
425 if (CMP_TYPE(txcmp) == TX_CMPL_TYPE_TX_L2)
426 nb_tx_pkts += opaque;
429 "Unhandled CMP type %02x\n",
432 } while (nb_tx_pkts < ring_mask);
435 bnxt_tx_cmp(txq, nb_tx_pkts);
436 cpr->cp_raw_cons = raw_cons;
443 uint16_t bnxt_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
447 uint16_t nb_tx_pkts = 0;
448 uint16_t coal_pkts = 0;
449 struct bnxt_tx_queue *txq = tx_queue;
450 struct tx_bd_long *last_txbd = NULL;
452 /* Handle TX completions */
453 bnxt_handle_tx_cp(txq);
455 /* Tx queue was stopped; wait for it to be restarted */
456 if (unlikely(!txq->tx_started)) {
457 PMD_DRV_LOG(DEBUG, "Tx q stopped;return\n");
461 /* Handle TX burst request */
462 for (nb_tx_pkts = 0; nb_tx_pkts < nb_pkts; nb_tx_pkts++) {
464 rc = bnxt_start_xmit(tx_pkts[nb_tx_pkts], txq,
465 &coal_pkts, &last_txbd);
471 if (likely(nb_tx_pkts)) {
472 /* Request a completion on the last packet */
473 last_txbd->flags_type &= ~TX_BD_LONG_FLAGS_NO_CMPL;
474 bnxt_db_write(&txq->tx_ring->tx_db, txq->tx_ring->tx_prod);
481 * Dummy DPDK callback for TX.
483 * This function is used to temporarily replace the real callback during
484 * unsafe control operations on the queue, or in case of error.
487 bnxt_dummy_xmit_pkts(void *tx_queue __rte_unused,
488 struct rte_mbuf **tx_pkts __rte_unused,
489 uint16_t nb_pkts __rte_unused)
494 int bnxt_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
496 struct bnxt *bp = dev->data->dev_private;
497 struct bnxt_tx_queue *txq = bp->tx_queues[tx_queue_id];
500 rc = is_bnxt_in_error(bp);
504 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
505 txq->tx_started = true;
506 PMD_DRV_LOG(DEBUG, "Tx queue started\n");
511 int bnxt_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
513 struct bnxt *bp = dev->data->dev_private;
514 struct bnxt_tx_queue *txq = bp->tx_queues[tx_queue_id];
517 rc = is_bnxt_in_error(bp);
521 /* Handle TX completions */
522 bnxt_handle_tx_cp(txq);
524 dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
525 txq->tx_started = false;
526 PMD_DRV_LOG(DEBUG, "Tx queue stopped\n");