summaryrefslogtreecommitdiffstats
path: root/drivers/net/mlx5/mlx5_rxtx_vec.h
blob: 1f08ed0b27818c001ec3e1202a4e1111c857c5d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/*-
 *   BSD LICENSE
 *
 *   Copyright 2017 6WIND S.A.
 *   Copyright 2017 Mellanox.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of 6WIND S.A. nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef RTE_PMD_MLX5_RXTX_VEC_H_
#define RTE_PMD_MLX5_RXTX_VEC_H_

#include <rte_common.h>
#include <rte_mbuf.h>

#include "mlx5_autoconf.h"
#include "mlx5_prm.h"

/*
 * Compile time sanity check for vectorized functions.
 */

#define S_ASSERT_RTE_MBUF(s) \
	static_assert(s, "A field of struct rte_mbuf is changed")
#define S_ASSERT_MLX5_CQE(s) \
	static_assert(s, "A field of struct mlx5_cqe is changed")

/* rxq_cq_decompress_v() */
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, pkt_len) ==
		  offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, data_len) ==
		  offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, hash) ==
		  offsetof(struct rte_mbuf, rx_descriptor_fields1) + 12);

/* rxq_cq_to_ptype_oflags_v() */
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, ol_flags) ==
		  offsetof(struct rte_mbuf, rearm_data) + 8);
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, rearm_data) ==
		  RTE_ALIGN(offsetof(struct rte_mbuf, rearm_data), 16));

/* rxq_burst_v() */
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, pkt_len) ==
		  offsetof(struct rte_mbuf, rx_descriptor_fields1) + 4);
S_ASSERT_RTE_MBUF(offsetof(struct rte_mbuf, data_len) ==
		  offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8);
#if (RTE_CACHE_LINE_SIZE == 128)
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, pkt_info) == 64);
#else
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, pkt_info) == 0);
#endif
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, rx_hash_res) ==
		  offsetof(struct mlx5_cqe, pkt_info) + 12);
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, rsvd1) +
		  sizeof(((struct mlx5_cqe *)0)->rsvd1) ==
		  offsetof(struct mlx5_cqe, hdr_type_etc));
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, vlan_info) ==
		  offsetof(struct mlx5_cqe, hdr_type_etc) + 2);
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, rsvd2) +
		  sizeof(((struct mlx5_cqe *)0)->rsvd2) ==
		  offsetof(struct mlx5_cqe, byte_cnt));
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, sop_drop_qpn) ==
		  RTE_ALIGN(offsetof(struct mlx5_cqe, sop_drop_qpn), 8));
S_ASSERT_MLX5_CQE(offsetof(struct mlx5_cqe, op_own) ==
		  offsetof(struct mlx5_cqe, sop_drop_qpn) + 7);

/**
 * Replenish buffers for RX in bulk.
 *
 * @param rxq
 *   Pointer to RX queue structure.
 * @param n
 *   Number of buffers to be replenished.
 */
static inline void
mlx5_rx_replenish_bulk_mbuf(struct mlx5_rxq_data *rxq, uint16_t n)
{
	const uint16_t q_n = 1 << rxq->elts_n;
	const uint16_t q_mask = q_n - 1;
	uint16_t elts_idx = rxq->rq_ci & q_mask;
	struct rte_mbuf **elts = &(*rxq->elts)[elts_idx];
	volatile struct mlx5_wqe_data_seg *wq = &(*rxq->wqes)[elts_idx];
	unsigned int i;

	assert(n >= MLX5_VPMD_RXQ_RPLNSH_THRESH);
	assert(n <= (uint16_t)(q_n - (rxq->rq_ci - rxq->rq_pi)));
	assert(MLX5_VPMD_RXQ_RPLNSH_THRESH > MLX5_VPMD_DESCS_PER_LOOP);
	/* Not to cross queue end. */
	n = RTE_MIN(n - MLX5_VPMD_DESCS_PER_LOOP, q_n - elts_idx);
	if (rte_mempool_get_bulk(rxq->mp, (void *)elts, n) < 0) {
		rxq->stats.rx_nombuf += n;
		return;
	}
	for (i = 0; i < n; ++i)
		wq[i].addr = rte_cpu_to_be_64((uintptr_t)elts[i]->buf_addr +
					      RTE_PKTMBUF_HEADROOM);
	rxq->rq_ci += n;
	/* Prevent overflowing into consumed mbufs. */
	elts_idx = rxq->rq_ci & q_mask;
	for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
		(*rxq->elts)[elts_idx + i] = &rxq->fake_mbuf;
	rte_io_wmb();
	*rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
}

#endif /* RTE_PMD_MLX5_RXTX_VEC_H_ */