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1021 lines
25 KiB
1021 lines
25 KiB
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
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/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/random.h> |
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#include <linux/objagg.h> |
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struct tokey { |
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unsigned int id; |
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}; |
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#define NUM_KEYS 32 |
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static int key_id_index(unsigned int key_id) |
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{ |
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if (key_id >= NUM_KEYS) { |
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WARN_ON(1); |
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return 0; |
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} |
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return key_id; |
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} |
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#define BUF_LEN 128 |
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struct world { |
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unsigned int root_count; |
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unsigned int delta_count; |
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char next_root_buf[BUF_LEN]; |
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struct objagg_obj *objagg_objs[NUM_KEYS]; |
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unsigned int key_refs[NUM_KEYS]; |
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}; |
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struct root { |
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struct tokey key; |
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char buf[BUF_LEN]; |
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}; |
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struct delta { |
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unsigned int key_id_diff; |
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}; |
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static struct objagg_obj *world_obj_get(struct world *world, |
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struct objagg *objagg, |
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unsigned int key_id) |
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{ |
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struct objagg_obj *objagg_obj; |
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struct tokey key; |
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int err; |
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key.id = key_id; |
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objagg_obj = objagg_obj_get(objagg, &key); |
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if (IS_ERR(objagg_obj)) { |
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pr_err("Key %u: Failed to get object.\n", key_id); |
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return objagg_obj; |
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} |
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if (!world->key_refs[key_id_index(key_id)]) { |
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world->objagg_objs[key_id_index(key_id)] = objagg_obj; |
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} else if (world->objagg_objs[key_id_index(key_id)] != objagg_obj) { |
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pr_err("Key %u: God another object for the same key.\n", |
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key_id); |
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err = -EINVAL; |
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goto err_key_id_check; |
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} |
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world->key_refs[key_id_index(key_id)]++; |
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return objagg_obj; |
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err_key_id_check: |
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objagg_obj_put(objagg, objagg_obj); |
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return ERR_PTR(err); |
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} |
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static void world_obj_put(struct world *world, struct objagg *objagg, |
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unsigned int key_id) |
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{ |
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struct objagg_obj *objagg_obj; |
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if (!world->key_refs[key_id_index(key_id)]) |
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return; |
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objagg_obj = world->objagg_objs[key_id_index(key_id)]; |
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objagg_obj_put(objagg, objagg_obj); |
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world->key_refs[key_id_index(key_id)]--; |
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} |
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#define MAX_KEY_ID_DIFF 5 |
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static bool delta_check(void *priv, const void *parent_obj, const void *obj) |
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{ |
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const struct tokey *parent_key = parent_obj; |
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const struct tokey *key = obj; |
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int diff = key->id - parent_key->id; |
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return diff >= 0 && diff <= MAX_KEY_ID_DIFF; |
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} |
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static void *delta_create(void *priv, void *parent_obj, void *obj) |
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{ |
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struct tokey *parent_key = parent_obj; |
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struct world *world = priv; |
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struct tokey *key = obj; |
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int diff = key->id - parent_key->id; |
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struct delta *delta; |
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if (!delta_check(priv, parent_obj, obj)) |
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return ERR_PTR(-EINVAL); |
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delta = kzalloc(sizeof(*delta), GFP_KERNEL); |
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if (!delta) |
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return ERR_PTR(-ENOMEM); |
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delta->key_id_diff = diff; |
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world->delta_count++; |
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return delta; |
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} |
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static void delta_destroy(void *priv, void *delta_priv) |
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{ |
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struct delta *delta = delta_priv; |
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struct world *world = priv; |
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world->delta_count--; |
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kfree(delta); |
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} |
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static void *root_create(void *priv, void *obj, unsigned int id) |
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{ |
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struct world *world = priv; |
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struct tokey *key = obj; |
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struct root *root; |
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root = kzalloc(sizeof(*root), GFP_KERNEL); |
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if (!root) |
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return ERR_PTR(-ENOMEM); |
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memcpy(&root->key, key, sizeof(root->key)); |
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memcpy(root->buf, world->next_root_buf, sizeof(root->buf)); |
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world->root_count++; |
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return root; |
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} |
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static void root_destroy(void *priv, void *root_priv) |
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{ |
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struct root *root = root_priv; |
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struct world *world = priv; |
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world->root_count--; |
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kfree(root); |
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} |
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static int test_nodelta_obj_get(struct world *world, struct objagg *objagg, |
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unsigned int key_id, bool should_create_root) |
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{ |
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unsigned int orig_root_count = world->root_count; |
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struct objagg_obj *objagg_obj; |
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const struct root *root; |
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int err; |
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if (should_create_root) |
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prandom_bytes(world->next_root_buf, |
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sizeof(world->next_root_buf)); |
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objagg_obj = world_obj_get(world, objagg, key_id); |
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if (IS_ERR(objagg_obj)) { |
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pr_err("Key %u: Failed to get object.\n", key_id); |
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return PTR_ERR(objagg_obj); |
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} |
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if (should_create_root) { |
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if (world->root_count != orig_root_count + 1) { |
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pr_err("Key %u: Root was not created\n", key_id); |
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err = -EINVAL; |
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goto err_check_root_count; |
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} |
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} else { |
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if (world->root_count != orig_root_count) { |
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pr_err("Key %u: Root was incorrectly created\n", |
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key_id); |
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err = -EINVAL; |
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goto err_check_root_count; |
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} |
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} |
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root = objagg_obj_root_priv(objagg_obj); |
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if (root->key.id != key_id) { |
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pr_err("Key %u: Root has unexpected key id\n", key_id); |
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err = -EINVAL; |
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goto err_check_key_id; |
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} |
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if (should_create_root && |
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memcmp(world->next_root_buf, root->buf, sizeof(root->buf))) { |
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pr_err("Key %u: Buffer does not match the expected content\n", |
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key_id); |
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err = -EINVAL; |
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goto err_check_buf; |
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} |
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return 0; |
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err_check_buf: |
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err_check_key_id: |
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err_check_root_count: |
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objagg_obj_put(objagg, objagg_obj); |
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return err; |
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} |
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static int test_nodelta_obj_put(struct world *world, struct objagg *objagg, |
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unsigned int key_id, bool should_destroy_root) |
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{ |
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unsigned int orig_root_count = world->root_count; |
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world_obj_put(world, objagg, key_id); |
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if (should_destroy_root) { |
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if (world->root_count != orig_root_count - 1) { |
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pr_err("Key %u: Root was not destroyed\n", key_id); |
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return -EINVAL; |
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} |
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} else { |
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if (world->root_count != orig_root_count) { |
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pr_err("Key %u: Root was incorrectly destroyed\n", |
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key_id); |
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return -EINVAL; |
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} |
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} |
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return 0; |
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} |
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static int check_stats_zero(struct objagg *objagg) |
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{ |
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const struct objagg_stats *stats; |
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int err = 0; |
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stats = objagg_stats_get(objagg); |
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if (IS_ERR(stats)) |
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return PTR_ERR(stats); |
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if (stats->stats_info_count != 0) { |
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pr_err("Stats: Object count is not zero while it should be\n"); |
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err = -EINVAL; |
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} |
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objagg_stats_put(stats); |
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return err; |
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} |
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static int check_stats_nodelta(struct objagg *objagg) |
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{ |
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const struct objagg_stats *stats; |
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int i; |
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int err; |
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stats = objagg_stats_get(objagg); |
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if (IS_ERR(stats)) |
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return PTR_ERR(stats); |
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if (stats->stats_info_count != NUM_KEYS) { |
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pr_err("Stats: Unexpected object count (%u expected, %u returned)\n", |
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NUM_KEYS, stats->stats_info_count); |
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err = -EINVAL; |
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goto stats_put; |
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} |
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for (i = 0; i < stats->stats_info_count; i++) { |
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if (stats->stats_info[i].stats.user_count != 2) { |
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pr_err("Stats: incorrect user count\n"); |
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err = -EINVAL; |
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goto stats_put; |
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} |
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if (stats->stats_info[i].stats.delta_user_count != 2) { |
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pr_err("Stats: incorrect delta user count\n"); |
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err = -EINVAL; |
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goto stats_put; |
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} |
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} |
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err = 0; |
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stats_put: |
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objagg_stats_put(stats); |
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return err; |
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} |
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static bool delta_check_dummy(void *priv, const void *parent_obj, |
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const void *obj) |
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{ |
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return false; |
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} |
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static void *delta_create_dummy(void *priv, void *parent_obj, void *obj) |
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{ |
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return ERR_PTR(-EOPNOTSUPP); |
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} |
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static void delta_destroy_dummy(void *priv, void *delta_priv) |
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{ |
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} |
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static const struct objagg_ops nodelta_ops = { |
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.obj_size = sizeof(struct tokey), |
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.delta_check = delta_check_dummy, |
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.delta_create = delta_create_dummy, |
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.delta_destroy = delta_destroy_dummy, |
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.root_create = root_create, |
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.root_destroy = root_destroy, |
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}; |
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static int test_nodelta(void) |
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{ |
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struct world world = {}; |
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struct objagg *objagg; |
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int i; |
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int err; |
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objagg = objagg_create(&nodelta_ops, NULL, &world); |
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if (IS_ERR(objagg)) |
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return PTR_ERR(objagg); |
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err = check_stats_zero(objagg); |
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if (err) |
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goto err_stats_first_zero; |
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/* First round of gets, the root objects should be created */ |
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for (i = 0; i < NUM_KEYS; i++) { |
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err = test_nodelta_obj_get(&world, objagg, i, true); |
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if (err) |
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goto err_obj_first_get; |
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} |
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/* Do the second round of gets, all roots are already created, |
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* make sure that no new root is created |
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*/ |
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for (i = 0; i < NUM_KEYS; i++) { |
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err = test_nodelta_obj_get(&world, objagg, i, false); |
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if (err) |
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goto err_obj_second_get; |
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} |
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err = check_stats_nodelta(objagg); |
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if (err) |
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goto err_stats_nodelta; |
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for (i = NUM_KEYS - 1; i >= 0; i--) { |
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err = test_nodelta_obj_put(&world, objagg, i, false); |
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if (err) |
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goto err_obj_first_put; |
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} |
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for (i = NUM_KEYS - 1; i >= 0; i--) { |
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err = test_nodelta_obj_put(&world, objagg, i, true); |
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if (err) |
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goto err_obj_second_put; |
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} |
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err = check_stats_zero(objagg); |
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if (err) |
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goto err_stats_second_zero; |
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objagg_destroy(objagg); |
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return 0; |
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err_stats_nodelta: |
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err_obj_first_put: |
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err_obj_second_get: |
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for (i--; i >= 0; i--) |
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world_obj_put(&world, objagg, i); |
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i = NUM_KEYS; |
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err_obj_first_get: |
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err_obj_second_put: |
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for (i--; i >= 0; i--) |
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world_obj_put(&world, objagg, i); |
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err_stats_first_zero: |
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err_stats_second_zero: |
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objagg_destroy(objagg); |
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return err; |
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} |
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static const struct objagg_ops delta_ops = { |
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.obj_size = sizeof(struct tokey), |
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.delta_check = delta_check, |
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.delta_create = delta_create, |
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.delta_destroy = delta_destroy, |
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.root_create = root_create, |
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.root_destroy = root_destroy, |
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}; |
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enum action { |
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ACTION_GET, |
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ACTION_PUT, |
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}; |
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enum expect_delta { |
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EXPECT_DELTA_SAME, |
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EXPECT_DELTA_INC, |
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EXPECT_DELTA_DEC, |
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}; |
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enum expect_root { |
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EXPECT_ROOT_SAME, |
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EXPECT_ROOT_INC, |
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EXPECT_ROOT_DEC, |
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}; |
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struct expect_stats_info { |
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struct objagg_obj_stats stats; |
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bool is_root; |
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unsigned int key_id; |
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}; |
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struct expect_stats { |
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unsigned int info_count; |
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struct expect_stats_info info[NUM_KEYS]; |
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}; |
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struct action_item { |
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unsigned int key_id; |
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enum action action; |
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enum expect_delta expect_delta; |
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enum expect_root expect_root; |
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struct expect_stats expect_stats; |
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}; |
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#define EXPECT_STATS(count, ...) \ |
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{ \ |
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.info_count = count, \ |
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.info = { __VA_ARGS__ } \ |
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} |
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#define ROOT(key_id, user_count, delta_user_count) \ |
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{{user_count, delta_user_count}, true, key_id} |
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#define DELTA(key_id, user_count) \ |
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{{user_count, user_count}, false, key_id} |
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static const struct action_item action_items[] = { |
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{ |
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1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
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EXPECT_STATS(1, ROOT(1, 1, 1)), |
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}, /* r: 1 d: */ |
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{ |
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7, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
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EXPECT_STATS(2, ROOT(1, 1, 1), ROOT(7, 1, 1)), |
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}, /* r: 1, 7 d: */ |
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{ |
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3, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(3, ROOT(1, 1, 2), ROOT(7, 1, 1), |
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DELTA(3, 1)), |
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}, /* r: 1, 7 d: 3^1 */ |
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{ |
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5, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(4, ROOT(1, 1, 3), ROOT(7, 1, 1), |
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DELTA(3, 1), DELTA(5, 1)), |
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}, /* r: 1, 7 d: 3^1, 5^1 */ |
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{ |
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3, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(4, ROOT(1, 1, 4), ROOT(7, 1, 1), |
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DELTA(3, 2), DELTA(5, 1)), |
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}, /* r: 1, 7 d: 3^1, 3^1, 5^1 */ |
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{ |
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1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(4, ROOT(1, 2, 5), ROOT(7, 1, 1), |
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DELTA(3, 2), DELTA(5, 1)), |
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}, /* r: 1, 1, 7 d: 3^1, 3^1, 5^1 */ |
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{ |
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30, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
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EXPECT_STATS(5, ROOT(1, 2, 5), ROOT(7, 1, 1), ROOT(30, 1, 1), |
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DELTA(3, 2), DELTA(5, 1)), |
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}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1 */ |
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{ |
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8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 2), ROOT(30, 1, 1), |
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DELTA(3, 2), DELTA(5, 1), DELTA(8, 1)), |
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}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7 */ |
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{ |
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8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 3), ROOT(30, 1, 1), |
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DELTA(3, 2), DELTA(8, 2), DELTA(5, 1)), |
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}, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7, 8^7 */ |
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{ |
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3, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(6, ROOT(1, 2, 4), ROOT(7, 1, 3), ROOT(30, 1, 1), |
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DELTA(8, 2), DELTA(3, 1), DELTA(5, 1)), |
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}, /* r: 1, 1, 7, 30 d: 3^1, 5^1, 8^7, 8^7 */ |
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{ |
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3, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(1, 2, 3), ROOT(7, 1, 3), ROOT(30, 1, 1), |
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DELTA(8, 2), DELTA(5, 1)), |
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}, /* r: 1, 1, 7, 30 d: 5^1, 8^7, 8^7 */ |
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{ |
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1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(1, 1, 2), ROOT(30, 1, 1), |
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DELTA(8, 2), DELTA(5, 1)), |
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}, /* r: 1, 7, 30 d: 5^1, 8^7, 8^7 */ |
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{ |
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1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(1, 0, 1), |
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DELTA(8, 2), DELTA(5, 1)), |
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}, /* r: 7, 30 d: 5^1, 8^7, 8^7 */ |
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{ |
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5, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC, |
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EXPECT_STATS(3, ROOT(7, 1, 3), ROOT(30, 1, 1), |
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DELTA(8, 2)), |
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}, /* r: 7, 30 d: 8^7, 8^7 */ |
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{ |
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5, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
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EXPECT_STATS(4, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(5, 1, 1), |
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DELTA(8, 2)), |
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}, /* r: 7, 30, 5 d: 8^7, 8^7 */ |
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{ |
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6, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), |
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DELTA(8, 2), DELTA(6, 1)), |
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}, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ |
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{ |
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8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 4), ROOT(5, 1, 2), ROOT(30, 1, 1), |
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DELTA(8, 3), DELTA(6, 1)), |
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}, /* r: 7, 30, 5 d: 8^7, 8^7, 8^7, 6^5 */ |
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{ |
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8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), |
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DELTA(8, 2), DELTA(6, 1)), |
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}, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ |
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{ |
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8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(7, 1, 2), ROOT(5, 1, 2), ROOT(30, 1, 1), |
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DELTA(8, 1), DELTA(6, 1)), |
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}, /* r: 7, 30, 5 d: 8^7, 6^5 */ |
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{ |
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8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(4, ROOT(5, 1, 2), ROOT(7, 1, 1), ROOT(30, 1, 1), |
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DELTA(6, 1)), |
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}, /* r: 7, 30, 5 d: 6^5 */ |
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{ |
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8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
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EXPECT_STATS(5, ROOT(5, 1, 3), ROOT(7, 1, 1), ROOT(30, 1, 1), |
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DELTA(6, 1), DELTA(8, 1)), |
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}, /* r: 7, 30, 5 d: 6^5, 8^5 */ |
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{ |
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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");
|
|
|