1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Description: test CQ peek-batch
4 *
5 */
6 #include <errno.h>
7 #include <stdio.h>
8 #include <unistd.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <fcntl.h>
12
13 #include "liburing.h"
14 #include "helpers.h"
15
queue_n_nops(struct io_uring * ring,int n,int offset)16 static int queue_n_nops(struct io_uring *ring, int n, int offset)
17 {
18 struct io_uring_sqe *sqe;
19 int i, ret;
20
21 for (i = 0; i < n; i++) {
22 sqe = io_uring_get_sqe(ring);
23 if (!sqe) {
24 printf("get sqe failed\n");
25 goto err;
26 }
27
28 io_uring_prep_nop(sqe);
29 sqe->user_data = i + offset;
30 }
31
32 ret = io_uring_submit(ring);
33 if (ret < n) {
34 printf("Submitted only %d\n", ret);
35 goto err;
36 } else if (ret < 0) {
37 printf("sqe submit failed: %d\n", ret);
38 goto err;
39 }
40
41 return 0;
42 err:
43 return 1;
44 }
45
46 #define CHECK_BATCH(ring, got, cqes, count, expected) do {\
47 got = io_uring_peek_batch_cqe((ring), cqes, count);\
48 if (got != expected) {\
49 printf("Got %d CQs, expected %d\n", got, expected);\
50 goto err;\
51 }\
52 } while(0)
53
main(int argc,char * argv[])54 int main(int argc, char *argv[])
55 {
56 struct io_uring_cqe *cqes[8];
57 struct io_uring ring;
58 int ret, i;
59 unsigned got;
60
61 if (argc > 1)
62 return T_EXIT_SKIP;
63
64 ret = io_uring_queue_init(4, &ring, 0);
65 if (ret) {
66 printf("ring setup failed\n");
67 return T_EXIT_FAIL;
68
69 }
70
71 CHECK_BATCH(&ring, got, cqes, 4, 0);
72 if (queue_n_nops(&ring, 4, 0))
73 goto err;
74
75 CHECK_BATCH(&ring, got, cqes, 4, 4);
76 for (i=0;i<4;i++) {
77 if (i != cqes[i]->user_data) {
78 printf("Got user_data %" PRIu64 ", expected %d\n",
79 (uint64_t) cqes[i]->user_data, i);
80 goto err;
81 }
82 }
83
84 if (queue_n_nops(&ring, 4, 4))
85 goto err;
86
87 io_uring_cq_advance(&ring, 4);
88 CHECK_BATCH(&ring, got, cqes, 4, 4);
89 for (i=0;i<4;i++) {
90 if (i + 4 != cqes[i]->user_data) {
91 printf("Got user_data %" PRIu64 ", expected %d\n",
92 (uint64_t) cqes[i]->user_data, i + 4);
93 goto err;
94 }
95 }
96
97 io_uring_cq_advance(&ring, 8);
98 io_uring_queue_exit(&ring);
99 return T_EXIT_PASS;
100 err:
101 io_uring_queue_exit(&ring);
102 return T_EXIT_FAIL;
103 }
104