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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* Copyright (c) 2016 Intel Corporation.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _TCP_TXQ_H_
#define _TCP_TXQ_H_
#ifdef __cplusplus
extern "C" {
#endif
static inline struct rte_mbuf **
tcp_txq_get_nxt_objs(const struct tle_tcp_stream *s, uint32_t *num)
{
uint32_t cnt, head, mask, sz, tail;
struct rte_ring *r;
r = s->tx.q;
sz = _rte_ring_get_size(r);
mask = _rte_ring_get_mask(r);
head = r->cons.head & mask;
tail = r->prod.tail & mask;
cnt = (tail >= head) ? tail - head : sz - head;
*num = cnt;
return (struct rte_mbuf **)(_rte_ring_get_data(r) + head);
}
static inline struct rte_mbuf **
tcp_txq_get_una_objs(const struct tle_tcp_stream *s, uint32_t *num)
{
uint32_t cnt, head, mask, sz, tail;
struct rte_ring *r;
r = s->tx.q;
sz = _rte_ring_get_size(r);
mask = _rte_ring_get_mask(r);
head = r->prod.tail & mask;
tail = r->cons.tail & mask;
cnt = (head >= tail) ? head - tail : sz - tail;
*num = cnt;
return (struct rte_mbuf **)(_rte_ring_get_data(r) + tail);
}
static inline void
tcp_txq_set_nxt_head(struct tle_tcp_stream *s, uint32_t num)
{
struct rte_ring *r;
r = s->tx.q;
r->cons.head += num;
}
static inline void
tcp_txq_rst_nxt_head(struct tle_tcp_stream *s)
{
struct rte_ring *r = s->tx.q;
struct rte_mbuf *m;
uint32_t offset, data_len;
if (s->tcb.snd.nxt_pkt != NULL) {
s->tcb.snd.nxt_offset = 0;
s->tcb.snd.nxt_pkt = NULL;
}
offset = s->tcb.snd.una_offset;
if (offset) {
m = (struct rte_mbuf *)(_rte_ring_get_data(r)[r->cons.tail & r->mask]);
data_len = m->data_len - PKT_L234_HLEN(m);
while (offset >= data_len) {
offset -= data_len;
m = m->next;
data_len = m->data_len;
}
s->tcb.snd.nxt_pkt = m;
s->tcb.snd.nxt_offset = offset;
}
r->cons.head = r->cons.tail;
}
static inline void
tcp_txq_set_una_tail(struct tle_tcp_stream *s, uint32_t num)
{
struct rte_ring *r;
r = s->tx.q;
rte_smp_rmb();
r->cons.tail += num;
}
static inline uint32_t
tcp_txq_nxt_cnt(struct tle_tcp_stream *s)
{
struct rte_ring *r;
r = s->tx.q;
return (r->prod.tail - r->cons.head) & _rte_ring_get_mask(r);
}
static inline void
txs_enqueue(struct tle_ctx *ctx, struct tle_tcp_stream *s)
{
struct rte_ring *r;
uint32_t n;
if (rte_atomic32_add_return(&s->tx.arm, 1) == 1) {
r = CTX_TCP_TSQ(ctx);
n = _rte_ring_enqueue_burst(r, (void * const *)&s, 1);
RTE_VERIFY(n == 1);
}
}
static inline uint32_t
txs_dequeue_bulk(struct tle_ctx *ctx, struct tle_tcp_stream *s[], uint32_t num)
{
struct rte_ring *r;
uint32_t n, i;
r = CTX_TCP_TSQ(ctx);
n = _rte_ring_dequeue_burst(r, (void **)s, num);
for (i = 0; i < n; i++)
rte_atomic32_clear(&s[i]->tx.arm);
return n;
}
#ifdef __cplusplus
}
#endif
#endif /* _TCP_TXQ_H_ */
|
