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36 #include <rte_byteorder.h>
37 #include <rte_malloc.h>
41 #include "bnxt_ring.h"
44 #include "hsi_struct_def_dpdk.h"
51 void bnxt_free_tx_rings(struct bnxt *bp)
55 for (i = 0; i < (int)bp->tx_nr_rings; i++) {
56 struct bnxt_tx_queue *txq = bp->tx_queues[i];
61 bnxt_free_ring(txq->tx_ring->tx_ring_struct);
62 rte_free(txq->tx_ring->tx_ring_struct);
63 rte_free(txq->tx_ring);
65 bnxt_free_ring(txq->cp_ring->cp_ring_struct);
66 rte_free(txq->cp_ring->cp_ring_struct);
67 rte_free(txq->cp_ring);
70 bp->tx_queues[i] = NULL;
74 int bnxt_init_one_tx_ring(struct bnxt_tx_queue *txq)
76 struct bnxt_tx_ring_info *txr = txq->tx_ring;
77 struct bnxt_ring *ring = txr->tx_ring_struct;
79 txq->tx_wake_thresh = ring->ring_size / 2;
80 ring->fw_ring_id = INVALID_HW_RING_ID;
85 int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id)
87 struct bnxt_cp_ring_info *cpr;
88 struct bnxt_tx_ring_info *txr;
89 struct bnxt_ring *ring;
91 txr = rte_zmalloc_socket("bnxt_tx_ring",
92 sizeof(struct bnxt_tx_ring_info),
93 RTE_CACHE_LINE_SIZE, socket_id);
98 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
99 sizeof(struct bnxt_ring),
100 RTE_CACHE_LINE_SIZE, socket_id);
103 txr->tx_ring_struct = ring;
104 ring->ring_size = rte_align32pow2(txq->nb_tx_desc + 1);
105 ring->ring_mask = ring->ring_size - 1;
106 ring->bd = (void *)txr->tx_desc_ring;
107 ring->bd_dma = txr->tx_desc_mapping;
108 ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_tx_bd);
109 ring->vmem = (void **)&txr->tx_buf_ring;
111 cpr = rte_zmalloc_socket("bnxt_tx_ring",
112 sizeof(struct bnxt_cp_ring_info),
113 RTE_CACHE_LINE_SIZE, socket_id);
118 ring = rte_zmalloc_socket("bnxt_tx_ring_struct",
119 sizeof(struct bnxt_ring),
120 RTE_CACHE_LINE_SIZE, socket_id);
123 cpr->cp_ring_struct = ring;
124 ring->ring_size = txr->tx_ring_struct->ring_size;
125 ring->ring_mask = ring->ring_size - 1;
126 ring->bd = (void *)cpr->cp_desc_ring;
127 ring->bd_dma = cpr->cp_desc_mapping;
134 static inline uint32_t bnxt_tx_avail(struct bnxt_tx_ring_info *txr)
136 /* Tell compiler to fetch tx indices from memory. */
137 rte_compiler_barrier();
139 return txr->tx_ring_struct->ring_size -
140 ((txr->tx_prod - txr->tx_cons) &
141 txr->tx_ring_struct->ring_mask) - 1;
144 static uint16_t bnxt_start_xmit(struct rte_mbuf *tx_pkt,
145 struct bnxt_tx_queue *txq)
147 struct bnxt_tx_ring_info *txr = txq->tx_ring;
148 struct tx_bd_long *txbd;
149 struct tx_bd_long_hi *txbd1;
150 uint32_t vlan_tag_flags, cfa_action;
151 bool long_bd = false;
152 uint16_t last_prod = 0;
153 struct rte_mbuf *m_seg;
154 struct bnxt_sw_tx_bd *tx_buf;
155 static const uint32_t lhint_arr[4] = {
156 TX_BD_LONG_FLAGS_LHINT_LT512,
157 TX_BD_LONG_FLAGS_LHINT_LT1K,
158 TX_BD_LONG_FLAGS_LHINT_LT2K,
159 TX_BD_LONG_FLAGS_LHINT_LT2K
162 if (tx_pkt->ol_flags & (PKT_TX_TCP_SEG | PKT_TX_TCP_CKSUM |
163 PKT_TX_UDP_CKSUM | PKT_TX_IP_CKSUM |
164 PKT_TX_VLAN_PKT | PKT_TX_OUTER_IP_CKSUM))
167 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
168 tx_buf->mbuf = tx_pkt;
169 tx_buf->nr_bds = long_bd + tx_pkt->nb_segs;
170 last_prod = (txr->tx_prod + tx_buf->nr_bds - 1) &
171 txr->tx_ring_struct->ring_mask;
173 if (unlikely(bnxt_tx_avail(txr) < tx_buf->nr_bds))
176 txbd = &txr->tx_desc_ring[txr->tx_prod];
177 txbd->opaque = txr->tx_prod;
178 txbd->flags_type = tx_buf->nr_bds << TX_BD_LONG_FLAGS_BD_CNT_SFT;
179 txbd->len = tx_pkt->data_len;
180 if (txbd->len >= 2014)
181 txbd->flags_type |= TX_BD_LONG_FLAGS_LHINT_GTE2K;
183 txbd->flags_type |= lhint_arr[txbd->len >> 9];
184 txbd->addr = rte_cpu_to_le_32(RTE_MBUF_DATA_DMA_ADDR(tx_buf->mbuf));
187 txbd->flags_type |= TX_BD_LONG_TYPE_TX_BD_LONG;
190 if (tx_buf->mbuf->ol_flags & PKT_TX_VLAN_PKT) {
191 /* shurd: Should this mask at
192 * TX_BD_LONG_CFA_META_VLAN_VID_MASK?
194 vlan_tag_flags = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
195 tx_buf->mbuf->vlan_tci;
196 /* Currently supports 8021Q, 8021AD vlan offloads
197 * QINQ1, QINQ2, QINQ3 vlan headers are deprecated
199 /* DPDK only supports 802.11q VLAN packets */
201 TX_BD_LONG_CFA_META_VLAN_TPID_TPID8100;
204 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
206 txbd1 = (struct tx_bd_long_hi *)
207 &txr->tx_desc_ring[txr->tx_prod];
209 txbd1->cfa_meta = vlan_tag_flags;
210 txbd1->cfa_action = cfa_action;
212 if (tx_pkt->ol_flags & PKT_TX_TCP_SEG) {
214 txbd1->lflags |= TX_BD_LONG_LFLAGS_LSO;
215 txbd1->hdr_size = tx_pkt->l2_len + tx_pkt->l3_len +
217 txbd1->mss = tx_pkt->tso_segsz;
219 } else if (tx_pkt->ol_flags & PKT_TX_OIP_IIP_TCP_UDP_CKSUM) {
220 /* Outer IP, Inner IP, Inner TCP/UDP CSO */
221 txbd1->lflags |= TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM;
223 } else if (tx_pkt->ol_flags & PKT_TX_IIP_TCP_UDP_CKSUM) {
224 /* (Inner) IP, (Inner) TCP/UDP CSO */
225 txbd1->lflags |= TX_BD_FLG_IP_TCP_UDP_CHKSUM;
227 } else if (tx_pkt->ol_flags & PKT_TX_OIP_TCP_UDP_CKSUM) {
228 /* Outer IP, (Inner) TCP/UDP CSO */
229 txbd1->lflags |= TX_BD_FLG_TIP_TCP_UDP_CHKSUM;
231 } else if (tx_pkt->ol_flags & PKT_TX_OIP_IIP_CKSUM) {
232 /* Outer IP, Inner IP CSO */
233 txbd1->lflags |= TX_BD_FLG_TIP_IP_CHKSUM;
235 } else if (tx_pkt->ol_flags & PKT_TX_TCP_UDP_CKSUM) {
237 txbd1->lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM;
239 } else if (tx_pkt->ol_flags & PKT_TX_IP_CKSUM) {
241 txbd1->lflags |= TX_BD_LONG_LFLAGS_IP_CHKSUM;
243 } else if (tx_pkt->ol_flags & PKT_TX_OUTER_IP_CKSUM) {
245 txbd1->lflags |= TX_BD_LONG_LFLAGS_T_IP_CHKSUM;
249 txbd->flags_type |= TX_BD_SHORT_TYPE_TX_BD_SHORT;
252 m_seg = tx_pkt->next;
253 /* i is set at the end of the if(long_bd) block */
254 while (txr->tx_prod != last_prod) {
255 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
256 tx_buf = &txr->tx_buf_ring[txr->tx_prod];
258 txbd = &txr->tx_desc_ring[txr->tx_prod];
259 txbd->addr = rte_cpu_to_le_32(RTE_MBUF_DATA_DMA_ADDR(m_seg));
260 txbd->flags_type = TX_BD_SHORT_TYPE_TX_BD_SHORT;
261 txbd->len = m_seg->data_len;
266 txbd->flags_type |= TX_BD_LONG_FLAGS_PACKET_END;
268 txr->tx_prod = RING_NEXT(txr->tx_ring_struct, txr->tx_prod);
273 static void bnxt_tx_cmp(struct bnxt_tx_queue *txq, int nr_pkts)
275 struct bnxt_tx_ring_info *txr = txq->tx_ring;
276 uint16_t cons = txr->tx_cons;
279 for (i = 0; i < nr_pkts; i++) {
280 struct bnxt_sw_tx_bd *tx_buf;
281 struct rte_mbuf *mbuf;
283 tx_buf = &txr->tx_buf_ring[cons];
284 cons = RING_NEXT(txr->tx_ring_struct, cons);
288 /* EW - no need to unmap DMA memory? */
290 for (j = 1; j < tx_buf->nr_bds; j++)
291 cons = RING_NEXT(txr->tx_ring_struct, cons);
292 rte_pktmbuf_free(mbuf);
298 static int bnxt_handle_tx_cp(struct bnxt_tx_queue *txq)
300 struct bnxt_cp_ring_info *cpr = txq->cp_ring;
301 uint32_t raw_cons = cpr->cp_raw_cons;
304 struct tx_cmpl *txcmp;
306 if ((txq->tx_ring->tx_ring_struct->ring_size -
307 (bnxt_tx_avail(txq->tx_ring))) >
308 txq->tx_free_thresh) {
310 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
311 txcmp = (struct tx_cmpl *)&cpr->cp_desc_ring[cons];
313 if (!CMP_VALID(txcmp, raw_cons, cpr->cp_ring_struct))
316 if (CMP_TYPE(txcmp) == TX_CMPL_TYPE_TX_L2)
320 "Unhandled CMP type %02x\n",
322 raw_cons = NEXT_RAW_CMP(raw_cons);
325 bnxt_tx_cmp(txq, nb_tx_pkts);
326 cpr->cp_raw_cons = raw_cons;
327 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
332 uint16_t bnxt_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
335 struct bnxt_tx_queue *txq = tx_queue;
336 uint16_t nb_tx_pkts = 0;
337 uint16_t db_mask = txq->tx_ring->tx_ring_struct->ring_size >> 2;
338 uint16_t last_db_mask = 0;
340 /* Handle TX completions */
341 bnxt_handle_tx_cp(txq);
343 /* Handle TX burst request */
344 for (nb_tx_pkts = 0; nb_tx_pkts < nb_pkts; nb_tx_pkts++) {
345 if (bnxt_start_xmit(tx_pkts[nb_tx_pkts], txq)) {
347 } else if ((nb_tx_pkts & db_mask) != last_db_mask) {
348 B_TX_DB(txq->tx_ring->tx_doorbell,
349 txq->tx_ring->tx_prod);
350 last_db_mask = nb_tx_pkts & db_mask;
354 B_TX_DB(txq->tx_ring->tx_doorbell, txq->tx_ring->tx_prod);