1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2020 Broadcom
6 #ifndef _BNXT_RXTX_VEC_COMMON_H_
7 #define _BNXT_RXTX_VEC_COMMON_H_
8 #include "hsi_struct_def_dpdk.h"
12 #define RTE_BNXT_DESCS_PER_LOOP 4U
14 #define TX_BD_FLAGS_CMPL ((1 << TX_BD_LONG_FLAGS_BD_CNT_SFT) | \
15 TX_BD_SHORT_FLAGS_COAL_NOW | \
16 TX_BD_SHORT_TYPE_TX_BD_SHORT | \
17 TX_BD_LONG_FLAGS_PACKET_END)
19 #define TX_BD_FLAGS_NOCMPL (TX_BD_FLAGS_CMPL | TX_BD_LONG_FLAGS_NO_CMPL)
21 static inline uint32_t
22 bnxt_xmit_flags_len(uint16_t len, uint16_t flags)
26 return flags | TX_BD_LONG_FLAGS_LHINT_LT512;
28 return flags | TX_BD_LONG_FLAGS_LHINT_LT1K;
30 return flags | TX_BD_LONG_FLAGS_LHINT_LT2K;
32 return flags | TX_BD_LONG_FLAGS_LHINT_LT2K;
34 return flags | TX_BD_LONG_FLAGS_LHINT_GTE2K;
39 bnxt_rxq_vec_setup_common(struct bnxt_rx_queue *rxq)
42 struct rte_mbuf mb_def = { .buf_addr = 0 }; /* zeroed mbuf */
45 mb_def.data_off = RTE_PKTMBUF_HEADROOM;
46 mb_def.port = rxq->port_id;
47 rte_mbuf_refcnt_set(&mb_def, 1);
49 /* prevent compiler reordering: rearm_data covers previous fields */
50 rte_compiler_barrier();
51 p = (uintptr_t)&mb_def.rearm_data;
52 rxq->mbuf_initializer = *(uint64_t *)p;
54 rxq->rxrearm_start = 0;
59 bnxt_rxq_rearm(struct bnxt_rx_queue *rxq, struct bnxt_rx_ring_info *rxr)
61 struct rx_prod_pkt_bd *rxbds = &rxr->rx_desc_ring[rxq->rxrearm_start];
62 struct rte_mbuf **rx_bufs = &rxr->rx_buf_ring[rxq->rxrearm_start];
66 * Number of mbufs to allocate must be a multiple of four. The
67 * allocation must not go past the end of the ring.
69 nb = RTE_MIN(rxq->rxrearm_nb & ~0x3,
70 rxq->nb_rx_desc - rxq->rxrearm_start);
72 /* Allocate new mbufs into the software ring. */
73 if (rte_mempool_get_bulk(rxq->mb_pool, (void *)rx_bufs, nb) < 0) {
74 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed += nb;
79 /* Initialize the mbufs in vector, process 4 mbufs per loop. */
80 for (i = 0; i < nb; i += 4) {
81 rxbds[0].address = rte_mbuf_data_iova_default(rx_bufs[0]);
82 rxbds[1].address = rte_mbuf_data_iova_default(rx_bufs[1]);
83 rxbds[2].address = rte_mbuf_data_iova_default(rx_bufs[2]);
84 rxbds[3].address = rte_mbuf_data_iova_default(rx_bufs[3]);
90 rxq->rxrearm_start += nb;
91 bnxt_db_write(&rxr->rx_db, rxq->rxrearm_start - 1);
92 if (rxq->rxrearm_start >= rxq->nb_rx_desc)
93 rxq->rxrearm_start = 0;
95 rxq->rxrearm_nb -= nb;
97 #endif /* _BNXT_RXTX_VEC_COMMON_H_ */