| 42 | } |
| 43 | |
| 44 | static int test_inc(int use_mshot, int flags) |
| 45 | { |
| 46 | struct io_uring_buf_ring *br; |
| 47 | struct io_uring_params p = { }; |
| 48 | struct io_uring_cqe *cqe; |
| 49 | struct io_uring ring; |
| 50 | int nbytes = 65536; |
| 51 | int ret, fds[2], i; |
| 52 | char tmp[31]; |
| 53 | char *buf; |
| 54 | void *ptr; |
| 55 | int bid = -1; |
| 56 | int bid_bytes; |
| 57 | |
| 58 | if (no_buf_ring) |
| 59 | return 0; |
| 60 | |
| 61 | p.flags = flags; |
| 62 | ret = io_uring_queue_init_params(64, &ring, &p); |
| 63 | if (ret) { |
| 64 | fprintf(stderr, "ring setup failed: %d\n", ret); |
| 65 | return 1; |
| 66 | } |
| 67 | |
| 68 | if (pipe(fds) < 0) { |
| 69 | perror("pipe"); |
| 70 | return 1; |
| 71 | } |
| 72 | |
| 73 | if (posix_memalign((void **) &buf, 4096, 65536)) |
| 74 | return 1; |
| 75 | |
| 76 | br = io_uring_setup_buf_ring(&ring, 32, BUF_BGID, IOU_PBUF_RING_INC, &ret); |
| 77 | if (!br) { |
| 78 | if (ret == -EINVAL) { |
| 79 | no_buf_ring_inc = 1; |
| 80 | free(buf); |
| 81 | return 0; |
| 82 | } |
| 83 | fprintf(stderr, "Buffer ring register failed %d\n", ret); |
| 84 | return 1; |
| 85 | } |
| 86 | |
| 87 | ptr = buf; |
| 88 | buf = ptr + 65536 - 2048; |
| 89 | for (i = 0; i < 32; i++) { |
| 90 | io_uring_buf_ring_add(br, buf, 2048, i, 31, i); |
| 91 | buf -= 2048; |
| 92 | } |
| 93 | io_uring_buf_ring_advance(br, 32); |
| 94 | |
| 95 | memset(tmp, 0x5a, sizeof(tmp)); |
| 96 | |
| 97 | arm_read(&ring, fds[0], use_mshot); |
| 98 | |
| 99 | bid_bytes = 0; |
| 100 | do { |
| 101 | int write_size = sizeof(tmp); |
no test coverage detected