1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2018-2019 NXP
9 #include "rte_ethdev.h"
10 #include "rte_malloc.h"
11 #include "rte_memzone.h"
13 #include "base/enetc_hw.h"
15 #include "enetc_logs.h"
17 #define ENETC_RXBD_BUNDLE 8 /* Number of BDs to update at once */
20 enetc_clean_tx_ring(struct enetc_bdr *tx_ring)
23 struct enetc_swbd *tx_swbd;
26 i = tx_ring->next_to_clean;
27 tx_swbd = &tx_ring->q_swbd[i];
28 while ((int)(enetc_rd_reg(tx_ring->tcisr) &
29 ENETC_TBCISR_IDX_MASK) != i) {
30 rte_pktmbuf_free(tx_swbd->buffer_addr);
31 tx_swbd->buffer_addr = NULL;
34 if (unlikely(i == tx_ring->bd_count)) {
36 tx_swbd = &tx_ring->q_swbd[0];
42 tx_ring->next_to_clean = i;
47 enetc_xmit_pkts(void *tx_queue,
48 struct rte_mbuf **tx_pkts,
51 struct enetc_swbd *tx_swbd;
53 struct enetc_tx_bd *txbd;
54 struct enetc_bdr *tx_ring = (struct enetc_bdr *)tx_queue;
56 i = tx_ring->next_to_use;
59 enetc_clean_tx_ring(tx_ring);
60 tx_ring->q_swbd[i].buffer_addr = tx_pkts[start];
61 txbd = ENETC_TXBD(*tx_ring, i);
62 tx_swbd = &tx_ring->q_swbd[i];
63 txbd->frm_len = tx_pkts[start]->pkt_len;
64 txbd->buf_len = txbd->frm_len;
65 txbd->flags = rte_cpu_to_le_16(ENETC_TXBD_FLAGS_F);
66 txbd->addr = (uint64_t)(uintptr_t)
67 rte_cpu_to_le_64((size_t)tx_swbd->buffer_addr->buf_iova +
68 tx_swbd->buffer_addr->data_off);
71 if (unlikely(i == tx_ring->bd_count))
75 tx_ring->next_to_use = i;
76 enetc_wr_reg(tx_ring->tcir, i);
81 enetc_refill_rx_ring(struct enetc_bdr *rx_ring, const int buff_cnt)
83 struct enetc_swbd *rx_swbd;
84 union enetc_rx_bd *rxbd;
87 i = rx_ring->next_to_use;
88 rx_swbd = &rx_ring->q_swbd[i];
89 rxbd = ENETC_RXBD(*rx_ring, i);
90 for (j = 0; j < buff_cnt; j++) {
91 rx_swbd->buffer_addr = (void *)(uintptr_t)
92 rte_cpu_to_le_64((uint64_t)(uintptr_t)
93 rte_pktmbuf_alloc(rx_ring->mb_pool));
94 rxbd->w.addr = (uint64_t)(uintptr_t)
95 rx_swbd->buffer_addr->buf_iova +
96 rx_swbd->buffer_addr->data_off;
97 /* clear 'R" as well */
102 if (unlikely(i == rx_ring->bd_count)) {
104 rxbd = ENETC_RXBD(*rx_ring, 0);
105 rx_swbd = &rx_ring->q_swbd[i];
110 rx_ring->next_to_alloc = i;
111 rx_ring->next_to_use = i;
112 enetc_wr_reg(rx_ring->rcir, i);
118 static inline void enetc_slow_parsing(struct rte_mbuf *m,
119 uint64_t parse_results)
121 m->ol_flags &= ~(PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD);
123 switch (parse_results) {
124 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV4:
125 m->packet_type = RTE_PTYPE_L2_ETHER |
127 m->ol_flags |= PKT_RX_IP_CKSUM_BAD;
129 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV6:
130 m->packet_type = RTE_PTYPE_L2_ETHER |
132 m->ol_flags |= PKT_RX_IP_CKSUM_BAD;
134 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV4_TCP:
135 m->packet_type = RTE_PTYPE_L2_ETHER |
138 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
141 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV6_TCP:
142 m->packet_type = RTE_PTYPE_L2_ETHER |
145 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
148 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV4_UDP:
149 m->packet_type = RTE_PTYPE_L2_ETHER |
152 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
155 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV6_UDP:
156 m->packet_type = RTE_PTYPE_L2_ETHER |
159 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
162 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV4_SCTP:
163 m->packet_type = RTE_PTYPE_L2_ETHER |
166 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
169 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV6_SCTP:
170 m->packet_type = RTE_PTYPE_L2_ETHER |
173 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
176 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV4_ICMP:
177 m->packet_type = RTE_PTYPE_L2_ETHER |
180 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
183 case ENETC_PARSE_ERROR | ENETC_PKT_TYPE_IPV6_ICMP:
184 m->packet_type = RTE_PTYPE_L2_ETHER |
187 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD |
190 /* More switch cases can be added */
192 m->packet_type = RTE_PTYPE_UNKNOWN;
193 m->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN |
194 PKT_RX_L4_CKSUM_UNKNOWN;
199 static inline void __attribute__((hot))
200 enetc_dev_rx_parse(struct rte_mbuf *m, uint16_t parse_results)
202 ENETC_PMD_DP_DEBUG("parse summary = 0x%x ", parse_results);
203 m->ol_flags |= PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD;
205 switch (parse_results) {
206 case ENETC_PKT_TYPE_ETHER:
207 m->packet_type = RTE_PTYPE_L2_ETHER;
209 case ENETC_PKT_TYPE_IPV4:
210 m->packet_type = RTE_PTYPE_L2_ETHER |
213 case ENETC_PKT_TYPE_IPV6:
214 m->packet_type = RTE_PTYPE_L2_ETHER |
217 case ENETC_PKT_TYPE_IPV4_TCP:
218 m->packet_type = RTE_PTYPE_L2_ETHER |
222 case ENETC_PKT_TYPE_IPV6_TCP:
223 m->packet_type = RTE_PTYPE_L2_ETHER |
227 case ENETC_PKT_TYPE_IPV4_UDP:
228 m->packet_type = RTE_PTYPE_L2_ETHER |
232 case ENETC_PKT_TYPE_IPV6_UDP:
233 m->packet_type = RTE_PTYPE_L2_ETHER |
237 case ENETC_PKT_TYPE_IPV4_SCTP:
238 m->packet_type = RTE_PTYPE_L2_ETHER |
242 case ENETC_PKT_TYPE_IPV6_SCTP:
243 m->packet_type = RTE_PTYPE_L2_ETHER |
247 case ENETC_PKT_TYPE_IPV4_ICMP:
248 m->packet_type = RTE_PTYPE_L2_ETHER |
252 case ENETC_PKT_TYPE_IPV6_ICMP:
253 m->packet_type = RTE_PTYPE_L2_ETHER |
257 /* More switch cases can be added */
259 enetc_slow_parsing(m, parse_results);
265 enetc_clean_rx_ring(struct enetc_bdr *rx_ring,
266 struct rte_mbuf **rx_pkts,
271 struct enetc_swbd *rx_swbd;
273 cleaned_cnt = enetc_bd_unused(rx_ring);
274 /* next descriptor to process */
275 i = rx_ring->next_to_clean;
276 rx_swbd = &rx_ring->q_swbd[i];
277 while (likely(rx_frm_cnt < work_limit)) {
278 union enetc_rx_bd *rxbd;
281 if (cleaned_cnt >= ENETC_RXBD_BUNDLE) {
282 int count = enetc_refill_rx_ring(rx_ring, cleaned_cnt);
284 cleaned_cnt -= count;
287 rxbd = ENETC_RXBD(*rx_ring, i);
288 bd_status = rte_le_to_cpu_32(rxbd->r.lstatus);
292 rx_swbd->buffer_addr->pkt_len = rxbd->r.buf_len -
294 rx_swbd->buffer_addr->data_len = rxbd->r.buf_len -
296 rx_swbd->buffer_addr->hash.rss = rxbd->r.rss_hash;
297 rx_swbd->buffer_addr->ol_flags = 0;
298 enetc_dev_rx_parse(rx_swbd->buffer_addr,
299 rxbd->r.parse_summary);
300 rx_pkts[rx_frm_cnt] = rx_swbd->buffer_addr;
304 if (unlikely(i == rx_ring->bd_count)) {
306 rx_swbd = &rx_ring->q_swbd[i];
309 rx_ring->next_to_clean = i;
317 enetc_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts,
320 struct enetc_bdr *rx_ring = (struct enetc_bdr *)rxq;
322 return enetc_clean_rx_ring(rx_ring, rx_pkts, nb_pkts);