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vhost_ut: Add tests for spdk_vhost_vq_avail_ring_get

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Change-Id: Iae7d5feef98eee59560042b64921acefafeb8da7
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453439
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
This commit is contained in:
Seth Howell 2019-05-06 10:35:30 -07:00 committed by Darek Stojaczyk
parent ca0cdbf269
commit 5904abae79
1 changed files with 61 additions and 1 deletions
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62
test/unit/lib/vhost/vhost.c/vhost_ut.c
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@ -349,6 +349,65 @@ remove_controller_test(void)
cleanup_vdev(vdev);
}
static void
vq_avail_ring_get_test(void)
{
struct spdk_vhost_virtqueue vq;
uint16_t avail_mem[34];
uint16_t reqs[32];
uint16_t reqs_len, ret, i;
/* Basic example reap all requests */
vq.vring.avail = (struct vring_avail *)avail_mem;
vq.vring.size = 32;
vq.last_avail_idx = 24;
vq.vring.avail->idx = 29;
reqs_len = 6;
for (i = 0; i < 32; i++) {
vq.vring.avail->ring[i] = i;
}
ret = spdk_vhost_vq_avail_ring_get(&vq, reqs, reqs_len);
CU_ASSERT(ret == 5);
CU_ASSERT(vq.last_avail_idx == 29);
for (i = 0; i < ret; i++) {
CU_ASSERT(reqs[i] == vq.vring.avail->ring[i + 24]);
}
/* Basic example reap only some requests */
vq.last_avail_idx = 20;
vq.vring.avail->idx = 29;
reqs_len = 6;
ret = spdk_vhost_vq_avail_ring_get(&vq, reqs, reqs_len);
CU_ASSERT(ret == reqs_len);
CU_ASSERT(vq.last_avail_idx == 26);
for (i = 0; i < ret; i++) {
CU_ASSERT(reqs[i] == vq.vring.avail->ring[i + 20]);
}
/* Test invalid example */
vq.last_avail_idx = 20;
vq.vring.avail->idx = 156;
reqs_len = 6;
ret = spdk_vhost_vq_avail_ring_get(&vq, reqs, reqs_len);
CU_ASSERT(ret == 0);
/* Test overflow in the avail->idx variable. */
vq.last_avail_idx = 65535;
vq.vring.avail->idx = 4;
reqs_len = 6;
ret = spdk_vhost_vq_avail_ring_get(&vq, reqs, reqs_len);
CU_ASSERT(ret == 5);
CU_ASSERT(vq.last_avail_idx == 4);
CU_ASSERT(reqs[0] == vq.vring.avail->ring[31])
for (i = 1; i < ret; i++) {
CU_ASSERT(reqs[i] == vq.vring.avail->ring[i - 1]);
}
}
int
main(int argc, char **argv)
{
@ -369,7 +428,8 @@ main(int argc, char **argv)
CU_add_test(suite, "desc_to_iov", desc_to_iov_test) == NULL ||
CU_add_test(suite, "create_controller", create_controller_test) == NULL ||
CU_add_test(suite, "session_find_by_vid", session_find_by_vid_test) == NULL ||
CU_add_test(suite, "remove_controller", remove_controller_test) == NULL
CU_add_test(suite, "remove_controller", remove_controller_test) == NULL ||
CU_add_test(suite, "vq_avail_ring_get", vq_avail_ring_get_test) == NULL
) {
CU_cleanup_registry();
return CU_get_error();