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/* SPDX-License-Identifier: MIT */
/*
* Description: test persistence of mmap'ed provided ring buffers. Use a range
* of buffer group IDs that puts us into both the lower end array
* and higher end xarry.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/mman.h>
#include "liburing.h"
#include "helpers.h"
#define BGID_START 60
#define BGID_NR 10
#define ENTRIES 512
int main(int argc, char *argv[])
{
struct io_uring_buf_ring *br[BGID_NR];
struct io_uring ring;
size_t ring_size;
int ret, i, j;
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
fprintf(stderr, "queue init failed %d\n", ret);
return T_EXIT_FAIL;
}
ring_size = ENTRIES * sizeof(struct io_uring_buf);
for (i = 0; i < BGID_NR; i++) {
int bgid = BGID_START + i;
struct io_uring_buf_reg reg = {
.ring_entries = ENTRIES,
.bgid = bgid,
.flags = IOU_PBUF_RING_MMAP,
};
off_t off;
ret = io_uring_register_buf_ring(&ring, ®, 0);
if (ret) {
if (ret == -EINVAL)
return T_EXIT_SKIP;
fprintf(stderr, "reg buf ring: %d\n", ret);
return T_EXIT_FAIL;
}
off = IORING_OFF_PBUF_RING |
(unsigned long long) bgid << IORING_OFF_PBUF_SHIFT;
br[i] = mmap(NULL, ring_size, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_POPULATE, ring.ring_fd, off);
if (br[i] == MAP_FAILED) {
perror("mmap");
return T_EXIT_FAIL;
}
}
for (i = 0; i < BGID_NR; i++) {
ret = io_uring_unregister_buf_ring(&ring, BGID_START + i);
if (ret) {
fprintf(stderr, "reg buf ring: %d\n", ret);
return T_EXIT_FAIL;
}
}
for (j = 0; j < 1000; j++) {
for (i = 0; i < BGID_NR; i++)
memset(br[i], 0x5a, ring_size);
usleep(1000);
}
io_uring_queue_exit(&ring);
return T_EXIT_PASS;
}
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