// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/objagg.h>
struct tokey {
unsigned int id;
};
#define NUM_KEYS 32
static int key_id_index(unsigned int key_id)
{
if (key_id >= NUM_KEYS) {
WARN_ON(1);
return 0;
}
return key_id;
}
#define BUF_LEN 128
struct world {
unsigned int root_count;
unsigned int delta_count;
char next_root_buf[BUF_LEN];
struct objagg_obj *objagg_objs[NUM_KEYS];
unsigned int key_refs[NUM_KEYS];
};
struct root {
struct tokey key;
char buf[BUF_LEN];
};
struct delta {
unsigned int key_id_diff;
};
static struct objagg_obj *world_obj_get(struct world *world,
struct objagg *objagg,
unsigned int key_id)
{
struct objagg_obj *objagg_obj;
struct tokey key;
int err;
key.id = key_id;
objagg_obj = objagg_obj_get(objagg, &key);
if (IS_ERR(objagg_obj)) {
pr_err("Key %u: Failed to get object.\n", key_id);
return objagg_obj;
}
if (!world->key_refs[key_id_index(key_id)]) {
world->objagg_objs[key_id_index(key_id)] = objagg_obj;
} else if (world->objagg_objs[key_id_index(key_id)] != objagg_obj) {
pr_err("Key %u: Got another object for the same key.\n",
key_id);
err = -EINVAL;
goto err_key_id_check;
}
world->key_refs[key_id_index(key_id)]++;
return objagg_obj;
err_key_id_check:
objagg_obj_put(objagg, objagg_obj);
return ERR_PTR(err);
}
static void world_obj_put(struct world *world, struct objagg *objagg,
unsigned int key_id)
{
struct objagg_obj *objagg_obj;
if (!world->key_refs[key_id_index(key_id)])
return;
objagg_obj = world->objagg_objs[key_id_index(key_id)];
objagg_obj_put(objagg, objagg_obj);
world->key_refs[key_id_index(key_id)]--;
}
#define MAX_KEY_ID_DIFF 5
static bool delta_check(void *priv, const void *parent_obj, const void *obj)
{
const struct tokey *parent_key = parent_obj;
const struct tokey *key = obj;
int diff = key->id - parent_key->id;
return diff >= 0 && diff <= MAX_KEY_ID_DIFF;
}
static void *delta_create(void *priv, void *parent_obj, void *obj)
{
struct tokey *parent_key = parent_obj;
struct world *world = priv;
struct tokey *key = obj;
int diff = key->id - parent_key->id;
struct delta *delta;
if (!delta_check(priv, parent_obj, obj))
return ERR_PTR(-EINVAL);
delta = kzalloc(sizeof(*delta), GFP_KERNEL);
if (!delta)
return ERR_PTR(-ENOMEM);
delta->key_id_diff = diff;
world->delta_count++;
return delta;
}
static void delta_destroy(void *priv, void *delta_priv)
{
struct delta *delta = delta_priv;
struct world *world = priv;
world->delta_count--;
kfree(delta);
}
static void *root_create(void *priv, void *obj, unsigned int id)
{
struct world *world = priv;
struct tokey *key = obj;
struct root *root;
root = kzalloc(sizeof(*root), GFP_KERNEL);
if (!root)
return ERR_PTR(-ENOMEM);
memcpy(&root->key, key, sizeof(root->key));
memcpy(root->buf, world->next_root_buf, sizeof(root->buf));
world->root_count++;
return root;
}
static void root_destroy(void *priv, void *root_priv)
{
struct root *root = root_priv;
struct world *world = priv;
world->root_count--;
kfree(root);
}
static int test_nodelta_obj_get(struct world *world, struct objagg *objagg,
unsigned int key_id, bool should_create_root)
{
unsigned int orig_root_count = world->root_count;
struct objagg_obj *objagg_obj;
const struct root *root;
int err;
if (should_create_root)
get_random_bytes(world->next_root_buf,
sizeof(world->next_root_buf));
objagg_obj = world_obj_get(world, objagg, key_id);
if (IS_ERR(objagg_obj)) {
pr_err("Key %u: Failed to get object.\n", key_id);
return PTR_ERR(objagg_obj);
}
if (should_create_root) {
if (world->root_count != orig_root_count + 1) {
pr_err("Key %u: Root was not created\n", key_id);
err = -EINVAL;
goto err_check_root_count;
}
} else {
if (world->root_count != orig_root_count) {
pr_err("Key %u: Root was incorrectly created\n",
key_id);
err = -EINVAL;
goto err_check_root_count;
}
}
root = objagg_obj_root_priv(objagg_obj);
if (root->key.id != key_id) {
pr_err("Key %u: Root has unexpected key id\n", key_id);
err = -EINVAL;
goto err_check_key_id;
}
if (should_create_root &&
memcmp(world->next_root_buf, root->buf, sizeof(root->buf))) {
pr_err("Key %u: Buffer does not match the expected content\n",
key_id);
err = -EINVAL;
goto err_check_buf;
}
return 0;
err_check_buf:
err_check_key_id:
err_check_root_count:
objagg_obj_put(objagg, objagg_obj);
return err;
}
static int test_nodelta_obj_put(struct world *world, struct objagg *objagg,
unsigned int key_id, bool should_destroy_root)
{
unsigned int orig_root_count = world->root_count;
world_obj_put(world, objagg, key_id);
if (should_destroy_root) {
if (world->root_count != orig_root_count - 1) {
pr_err("Key %u: Root was not destroyed\n", key_id);
return -EINVAL;
}
} else {
if (world->root_count != orig_root_count) {
pr_err("Key %u: Root was incorrectly destroyed\n",
key_id);
return -EINVAL;
}
}
return 0;
}
static int check_stats_zero(struct objagg *objagg)
{
const struct objagg_stats *stats;
int err = 0;
stats = objagg_stats_get(objagg);
if (IS_ERR(stats))
return PTR_ERR(stats);
if (stats->stats_info_count != 0) {
pr_err("Stats: Object count is not zero while it should be\n");
err = -EINVAL;
}
objagg_stats_put(stats);
return err;
}
static int check_stats_nodelta(struct objagg *objagg)
{
const struct objagg_stats *stats;
int i;
int err;
stats = objagg_stats_get(objagg);
if (IS_ERR(stats))
return PTR_ERR(stats);
if (stats->stats_info_count != NUM_KEYS) {
pr_err("Stats: Unexpected object count (%u expected, %u returned)\n",
NUM_KEYS, stats->stats_info_count);
err = -EINVAL;
goto stats_put;
}
for (i = 0; i < stats->stats_info_count; i++) {
if (stats->stats_info[i].stats.user_count != 2) {
pr_err("Stats: incorrect user count\n");
err = -EINVAL;
goto stats_put;
}
if (stats->stats_info[i].stats.delta_user_count != 2) {
pr_err("Stats: incorrect delta user count\n");
err = -EINVAL;
goto stats_put;
}
}
err = 0;
stats_put:
objagg_stats_put(stats);
return err;
}
static bool delta_check_dummy(void *priv, const void *parent_obj,
const void *obj)
{
return false;
}
static void *delta_create_dummy(void *priv, void *parent_obj, void *obj)
{
return ERR_PTR(-EOPNOTSUPP);
}
static void delta_destroy_dummy(void *priv, void *delta_priv)
{
}
static const struct objagg_ops nodelta_ops = {
.obj_size = sizeof(struct tokey),
.delta_check = delta_check_dummy,
.delta_create = delta_create_dummy,
.delta_destroy = delta_destroy_dummy,
.root_create = root_create,
.root_destroy = root_destroy,
};
static int test_nodelta(void)
{
struct world world = {};
struct objagg *objagg;
int i;
int err;
objagg = objagg_create(&nodelta_ops, NULL, &world);
if (IS_ERR(objagg))
return PTR_ERR(objagg);
err = check_stats_zero(objagg);
if (err)
goto err_stats_first_zero;
/* First round of gets, the root objects should be created */
for (i = 0; i < NUM_KEYS; i++) {
err = test_nodelta_obj_get(&world, objagg, i, true);
if (err)
goto err_obj_first_get;
}
/* Do the second round of gets, all roots are already created,
* make sure that no new root is created
*/
for (i = 0; i < NUM_KEYS; i++) {
err = test_nodelta_obj_get(&world, objagg, i, false);
if (err)
goto err_obj_second_get;
}
err = check_stats_nodelta(objagg);
if (err)
goto err_stats_nodelta;
for (i = NUM_KEYS - 1; i >= 0; i--) {
err = test_nodelta_obj_put(&world, objagg, i, false);
if (err)
goto err_obj_first_put;
}
for (i = NUM_KEYS - 1; i >= 0; i--) {
err = test_nodelta_obj_put(&world, objagg, i, true);
if (err)
goto err_obj_second_put;
}
err = check_stats_zero(objagg);
if (err)
goto err_stats_second_zero;
objagg_destroy(objagg);
return 0;
err_stats_nodelta:
err_obj_first_put:
err_obj_second_get:
for (i--; i >= 0; i--)
world_obj_put(&world, objagg, i);
i = NUM_KEYS;
err_obj_first_get:
err_obj_second_put:
for (i--; i >= 0; i--)
world_obj_put(&world, objagg, i);
err_stats_first_zero:
err_stats_second_zero:
objagg_destroy(objagg);
return err;
}
static const struct objagg_ops delta_ops = {
.obj_size = sizeof(struct tokey),
.delta_check = delta_check,
.delta_create = delta_create,
.delta_destroy = delta_destroy,
.root_create = root_create,
.root_destroy = root_destroy,
};
enum action {
ACTION_GET,
ACTION_PUT,
};
enum expect_delta {
EXPECT_DELTA_SAME,
EXPECT_DELTA_INC,
EXPECT_DELTA_DEC,
};
enum expect_root {
EXPECT_ROOT_SAME,
EXPECT_ROOT_INC,
EXPECT_ROOT_DEC,
};
struct expect_stats_info {
struct objagg_obj_stats stats;
bool is_root;
unsigned int key_id;
};
struct expect_stats {
unsigned int info_count;
struct expect_stats_info info[NUM_KEYS];
};
struct action_item {
unsigned int key_id;
enum action action;
enum expect_delta expect_delta;
enum expect_root expect_root;
struct expect_stats expect_stats;
};
#define EXPECT_STATS(count, ...) \
{ \
.info_count = count, \
.info = { __VA_ARGS__ } \
}
#define ROOT(key_id, user_count, delta_user_count) \
{{user_count, delta_user_count}, true, key_id}
#define DELTA(key_id, user_count) \
{{user_count, user_count}, false, key_id}
static const struct action_item action_items[] = {
{
1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC,
EXPECT_STATS(1, ROOT(1, 1, 1)),
}, /* r: 1 d: */
{
7, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC,
EXPECT_STATS(2, ROOT(1, 1, 1), ROOT(7, 1, 1)),
}, /* r: 1, 7 d: */
{
3, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME,
EXPECT_STATS(3, ROOT(1, 1, 2), ROOT(7, 1, 1),
DELTA(3, 1)),
}, /* r: 1, 7 d: 3^1 */
{
5, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME,
EXPECT_STATS(4, ROOT(1, 1, 3), ROOT(7, 1, 1),
DELTA(3, 1), DELTA(5, 1)),
}, /* r: 1, 7 d: 3^1, 5^1 */
{
3, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(4, ROOT(1, 1, 4), ROOT(7, 1, 1),
DELTA(3, 2), DELTA(5, 1)),
}, /* r: 1, 7 d: 3^1, 3^1, 5^1 */
{
1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(4, ROOT(1, 2, 5), ROOT(7, 1, 1),
DELTA(3, 2), DELTA(5, 1)),
}, /* r: 1, 1, 7 d: 3^1, 3^1, 5^1 */
{
30, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC,
EXPECT_STATS(5, ROOT(1, 2, 5), ROOT(7, 1, 1), ROOT(30, 1, 1),
DELTA(3, 2), DELTA(5, 1)),
}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1 */
{
8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME,
EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 2), ROOT(30, 1, 1),
DELTA(3, 2), DELTA(5, 1), DELTA(8, 1)),
}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7 */
{
8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 3), ROOT(30, 1, 1),
DELTA(3, 2), DELTA(8, 2), DELTA(5, 1)),
}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7, 8^7 */
{
3, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(6, ROOT(1, 2, 4), ROOT(7, 1, 3), ROOT(30, 1, 1),
DELTA(8, 2), DELTA(3, 1), DELTA(5, 1)),
}, /* r: 1, 1, 7, 30 d: 3^1, 5^1, 8^7, 8^7 */
{
3, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(1, 2, 3), ROOT(7, 1, 3), ROOT(30, 1, 1),
DELTA(8, 2), DELTA(5, 1)),
}, /* r: 1, 1, 7, 30 d: 5^1, 8^7, 8^7 */
{
1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(1, 1, 2), ROOT(30, 1, 1),
DELTA(8, 2), DELTA(5, 1)),
}, /* r: 1, 7, 30 d: 5^1, 8^7, 8^7 */
{
1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(1, 0, 1),
DELTA(8, 2), DELTA(5, 1)),
}, /* r: 7, 30 d: 5^1, 8^7, 8^7 */
{
5, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC,
EXPECT_STATS(3, ROOT(7, 1, 3), ROOT(30, 1, 1),
DELTA(8, 2)),
}, /* r: 7, 30 d: 8^7, 8^7 */
{
5, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC,
EXPECT_STATS(4, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(5, 1, 1),
DELTA(8, 2)),
}, /* r: 7, 30, 5 d: 8^7, 8^7 */
{
6, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1),
DELTA(8, 2), DELTA(6, 1)),
}, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */
{
8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 4), ROOT(5, 1, 2), ROOT(30, 1, 1),
DELTA(8, 3), DELTA(6, 1)),
}, /* r: 7, 30, 5 d: 8^7, 8^7, 8^7, 6^5 */
{
8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1),
DELTA(8, 2), DELTA(6, 1)),
}, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */
{
8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(7, 1, 2), ROOT(5, 1, 2), ROOT(30, 1, 1),
DELTA(8, 1), DELTA(6, 1)),
}, /* r: 7, 30, 5 d: 8^7, 6^5 */
{
8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME,
EXPECT_STATS(4, ROOT(5, 1, 2), ROOT(7, 1, 1), ROOT(30, 1, 1),
DELTA(6, 1)),
}, /* r: 7, 30, 5 d: 6^5 */
{
8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME,
EXPECT_STATS(5, ROOT(5, 1, 3), ROOT(7, 1, 1), ROOT(30, 1, 1),
DELTA(6, 1), DELTA(8, 1)),
}, /* r: 7, 30, 5 d: 6^5, 8^5 */
{
7, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC,
EXPECT_STATS(4, ROOT(5, 1, 3), ROOT(30, 1, 1),
DELTA(6, 1), DELTA(8, 1)),
}, /* r: 30, 5 d: 6^5, 8^5 */
{
30, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC,
EXPECT_STATS(3, ROOT(5, 1, 3),
DELTA(6, 1), DELTA(8, 1)),
}, /* r: 5 d: 6^5, 8^5 */
{
5, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME,
EXPECT_STATS(3, ROOT(5, 0, 2),
DELTA(6, 1), DELTA(8, 1)),
}, /* r: d: 6^5, 8^5 */
{
6, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME,
EXPECT_STATS(2, ROOT(5, 0, 1),
DELTA(8, 1)),
}, /* r: d: 6^5 */
{
8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC,
EXPECT_STATS(0, ),
}, /* r: d: */
};
static int check_expect(struct world *world,
const struct action_item *action_item,
unsigned int orig_delta_count,
unsigned int orig_root_count)
{
unsigned int key_id = action_item->key_id;
switch (action_item->expect_delta) {
case EXPECT_DELTA_SAME:
if (orig_delta_count != world->delta_count) {
pr_err("Key %u: Delta count changed while expected to remain the same.\n",
key_id);
return -EINVAL;
}
break;
case EXPECT_DELTA_INC:
if (WARN_ON(action_item->action == ACTION_PUT))
return -EINVAL;
if (orig_delta_count + 1 != world->delta_count) {
pr_err("Key %u: Delta count was not incremented.\n",
key_id);
return -EINVAL;
}
break;
case EXPECT_DELTA_DEC:
if (WARN_ON(action_item->action == ACTION_GET))
return -EINVAL;
if (orig_delta_count - 1 != world->delta_count) {
pr_err("Key %u: Delta count was not decremented.\n",
key_id);
return -EINVAL;
}
break;
}
switch (action_item->expect_root) {
case EXPECT_ROOT_SAME:
if (orig_root_count != world->root_count) {
pr_err("Key %u: Root count changed while expected to remain the same.\n",
key_id);
return -EINVAL;
}
break;
case EXPECT_ROOT_INC:
if (WARN_ON(action_item->action == ACTION_PUT))
return -EINVAL;
if (orig_root_count + 1 != world->root_count) {
pr_err("Key %u: Root count was not incremented.\n",
key_id);
return -EINVAL;
}
break;
case EXPECT_ROOT_DEC:
if (WARN_ON(action_item->action == ACTION_GET))
return -EINVAL;
if (orig_root_count - 1 != world->root_count) {
pr_err("Key %u: Root count was not decremented.\n",
key_id);
return -EINVAL;
}
}
return 0;
}
static unsigned int obj_to_key_id(struct objagg_obj *objagg_obj)
{
const struct tokey *root_key;
const struct delta *delta;
unsigned int key_id;
root_key = objagg_obj_root_priv(objagg_obj);
key_id = root_key->id;
delta = objagg_obj_delta_priv(objagg_obj);
if (delta)
key_id += delta->key_id_diff;
return key_id;
}
static int
check_expect_stats_nums(const struct objagg_obj_stats_info *stats_info,
const struct expect_stats_info *expect_stats_info,
const char **errmsg)
{
if (stats_info->is_root != expect_stats_info->is_root) {
if (errmsg)
*errmsg = "Incorrect root/delta indication";
return -EINVAL;
}
if (stats_info->stats.user_count !=
expect_stats_info->stats.user_count) {
if (errmsg)
*errmsg = "Incorrect user count";
return -EINVAL;
}
if (stats_info->stats.delta_user_count !=
expect_stats_info->stats.delta_user_count) {
if (errmsg)
*errmsg = "Incorrect delta user count";
return -EINVAL;
}
return 0;
}
static int
check_expect_stats_key_id(const struct objagg_obj_stats_info *stats_info,
const struct expect_stats_info *expect_stats_info,
const char **errmsg)
{
if (obj_to_key_id(stats_info->objagg_obj) !=
expect_stats_info->key_id) {
if (errmsg)
*errmsg = "incorrect key id";
return -EINVAL;
}
return 0;
}
static int check_expect_stats_neigh(const struct objagg_stats *stats,
const struct expect_stats *expect_stats,
int pos)
{
int i;
int err;
for (i = pos - 1; i >= 0; i--) {
err = check_expect_stats_nums(&stats->stats_info[i],
&expect_stats->info[pos], NULL);
if (err)
break;
err = check_expect_stats_key_id(&stats->stats_info[i],
&expect_stats->info[pos], NULL);
if (!err)
return 0;
}
for (i = pos + 1; i < stats->stats_info_count; i++) {
err = check_expect_stats_nums(&stats->stats_info[i],
&expect_stats->info[pos], NULL);
if (err)
break;
err = check_expect_stats_key_id(&stats->stats_info[i],
&expect_stats->info[pos], NULL);
if (!err)
return 0;
}
return -EINVAL;
}
static int __check_expect_stats(const struct objagg_stats *stats,
const struct expect_stats *expect_stats,
const char **errmsg)
{
int i;
int err;
if (stats->stats_info_count != expect_stats->info_count) {
*errmsg = "Unexpected object count";
return -EINVAL;
}
for (i = 0; i < stats->stats_info_count; i++) {
err = check_expect_stats_nums(&stats->stats_info[i],
&expect_stats->info[i], errmsg);
if (err)
return err;
err = check_expect_stats_key_id(&stats->stats_info[i],
&expect_stats->info[i], errmsg);
if (err) {
/* It is possible that one of the neighbor stats with
* same numbers have the correct key id, so check it
*/
err = check_expect_stats_neigh(stats, expect_stats, i);
if (err)
return err;
}
}
return 0;
}
static int check_expect_stats(struct objagg *objagg,
const struct expect_stats *expect_stats,
const char **errmsg)
{
const struct objagg_stats *stats;
int err;
stats = objagg_stats_get(objagg);
if (IS_ERR(stats)) {
*errmsg = "objagg_stats_get() failed.";
return PTR_ERR(stats);
}
err = __check_expect_stats(stats, expect_stats, errmsg);
objagg_stats_put(stats);
return err;
}
static int test_delta_action_item(struct world *world,
struct objagg *objagg,
const struct action_item *action_item,
bool inverse)
{
unsigned int orig_delta_count = world->delta_count;
unsigned int orig_root_count = world->root_count;
unsigned int key_id = action_item->key_id;
enum action action = action_item->action;
struct objagg_obj *objagg_obj;
const char *errmsg;
int err;
if (inverse)
action = action == ACTION_GET ? ACTION_PUT : ACTION_GET;
switch (action) {
case ACTION_GET:
objagg_obj = world_obj_get(world, objagg, key_id);
if (IS_ERR(objagg_obj))
return PTR_ERR(objagg_obj);
break;
case ACTION_PUT:
world_obj_put(world, objagg, key_id);
break;
}
if (inverse)
return 0;
err = check_expect(world, action_item,
orig_delta_count, orig_root_count);
if (err)
goto errout;
err = check_expect_stats(objagg, &action_item->expect_stats, &errmsg);
if (err) {
pr_err("Key %u: Stats: %s\n", action_item->key_id, errmsg);
goto errout;
}
return 0;
errout:
/* This can only happen when action is not inversed.
* So in case of an error, cleanup by doing inverse action.
*/
test_delta_action_item(world, objagg, action_item, true);
return err;
}
static int test_delta(void)
{
struct world world = {};
struct objagg *objagg;
int i;
int err;
objagg = objagg_create(&delta_ops, NULL, &world);
if (IS_ERR(objagg))
return PTR_ERR(objagg);
for (i = 0; i < ARRAY_SIZE(action_items); i++) {
err = test_delta_action_item(&world, objagg,
&action_items[i], false);
if (err)
goto err_do_action_item;
}
objagg_destroy(objagg);
return 0;
err_do_action_item:
for (i--; i >= 0; i--)
test_delta_action_item(&world, objagg, &action_items[i], true);
objagg_destroy(objagg);
return err;
}
struct hints_case {
const unsigned int *key_ids;
size_t key_ids_count;
struct expect_stats expect_stats;
struct expect_stats expect_stats_hints;
};
static const unsigned int hints_case_key_ids[] = {
1, 7, 3, 5, 3, 1, 30, 8, 8, 5, 6, 8,
};
static const struct hints_case hints_case = {
.key_ids = hints_case_key_ids,
.key_ids_count = ARRAY_SIZE(hints_case_key_ids),
.expect_stats =
EXPECT_STATS(7, ROOT(1, 2, 7), ROOT(7, 1, 4), ROOT(30, 1, 1),
DELTA(8, 3), DELTA(3, 2),
DELTA(5, 2), DELTA(6, 1)),
.expect_stats_hints =
EXPECT_STATS(7, ROOT(3, 2, 9), ROOT(1, 2, 2), ROOT(30, 1, 1),
DELTA(8, 3), DELTA(5, 2),
DELTA(6, 1), DELTA(7, 1)),
};
static void __pr_debug_stats(const struct objagg_stats *stats)
{
int i;
for (i = 0; i < stats->stats_info_count; i++)
pr_debug("Stat index %d key %u: u %d, d %d, %s\n", i,
obj_to_key_id(stats->stats_info[i].objagg_obj),
stats->stats_info[i].stats.user_count,
stats->stats_info[i].stats.delta_user_count,
stats->stats_info[i].is_root ? "root" : "noroot");
}
static void pr_debug_stats(struct objagg *objagg)
{
const struct objagg_stats *stats;
stats = objagg_stats_get(objagg);
if (IS_ERR(stats))
return;
__pr_debug_stats(stats);
objagg_stats_put(stats);
}
static void pr_debug_hints_stats(struct objagg_hints *objagg_hints)
{
const struct objagg_stats *stats;
stats = objagg_hints_stats_get(objagg_hints);
if (IS_ERR(stats))
return;
__pr_debug_stats(stats);
objagg_stats_put(stats);
}
static int check_expect_hints_stats(struct objagg_hints *objagg_hints,
const struct expect_stats *expect_stats,
const char **errmsg)
{
const struct objagg_stats *stats;
int err;
stats = objagg_hints_stats_get(objagg_hints);
if (IS_ERR(stats))
return PTR_ERR(stats);
err = __check_expect_stats(stats, expect_stats, errmsg);
objagg_stats_put(stats);
return err;
}
static int test_hints_case(const struct hints_case *hints_case)
{
struct objagg_obj *objagg_obj;
struct objagg_hints *hints;
struct world world2 = {};
struct world world = {};
struct objagg *objagg2;
struct objagg *objagg;
const char *errmsg;
int i;
int err;
objagg = objagg_create(&delta_ops, NULL, &world);
if (IS_ERR(objagg))
return PTR_ERR(objagg);
for (i = 0; i < hints_case->key_ids_count; i++) {
objagg_obj = world_obj_get(&world, objagg,
hints_case->key_ids[i]);
if (IS_ERR(objagg_obj)) {
err = PTR_ERR(objagg_obj);
goto err_world_obj_get;
}
}
pr_debug_stats(objagg);
err = check_expect_stats(objagg, &hints_case->expect_stats, &errmsg);
if (err) {
pr_err("Stats: %s\n", errmsg);
goto err_check_expect_stats;
}
hints = objagg_hints_get(objagg, OBJAGG_OPT_ALGO_SIMPLE_GREEDY);
if (IS_ERR(hints)) {
err = PTR_ERR(hints);
goto err_hints_get;
}
pr_debug_hints_stats(hints);
err = check_expect_hints_stats(hints, &hints_case->expect_stats_hints,
&errmsg);
if (err) {
pr_err("Hints stats: %s\n", errmsg);
goto err_check_expect_hints_stats;
}
objagg2 = objagg_create(&delta_ops, hints, &world2);
if (IS_ERR(objagg2))
return PTR_ERR(objagg2);
for (i = 0; i < hints_case->key_ids_count; i++) {
objagg_obj = world_obj_get(&world2, objagg2,
hints_case->key_ids[i]);
if (IS_ERR(objagg_obj)) {
err = PTR_ERR(objagg_obj);
goto err_world2_obj_get;
}
}
pr_debug_stats(objagg2);
err = check_expect_stats(objagg2, &hints_case->expect_stats_hints,
&errmsg);
if (err) {
pr_err("Stats2: %s\n", errmsg);
goto err_check_expect_stats2;
}
err = 0;
err_check_expect_stats2:
err_world2_obj_get:
for (i--; i >= 0; i--)
world_obj_put(&world2, objagg, hints_case->key_ids[i]);
i = hints_case->key_ids_count;
objagg_destroy(objagg2);
err_check_expect_hints_stats:
objagg_hints_put(hints);
err_hints_get:
err_check_expect_stats:
err_world_obj_get:
for (i--; i >= 0; i--)
world_obj_put(&world, objagg, hints_case->key_ids[i]);
objagg_destroy(objagg);
return err;
}
static int test_hints(void)
{
return test_hints_case(&hints_case);
}
static int __init test_objagg_init(void)
{
int err;
err = test_nodelta();
if (err)
return err;
err = test_delta();
if (err)
return err;
return test_hints();
}
static void __exit test_objagg_exit(void)
{
}
module_init(test_objagg_init);
module_exit(test_objagg_exit);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Jiri Pirko <[email protected]>");
MODULE_DESCRIPTION("Test module for objagg");
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