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linux/linux-5.18.11/drivers/net/wireguard/selftest/allowedips.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*
* This contains some basic static unit tests for the allowedips data structure.
* It also has two additional modes that are disabled and meant to be used by
* folks directly playing with this file. If you define the macro
* DEBUG_PRINT_TRIE_GRAPHVIZ to be 1, then every time there's a full tree in
* memory, it will be printed out as KERN_DEBUG in a format that can be passed
* to graphviz (the dot command) to visualize it. If you define the macro
* DEBUG_RANDOM_TRIE to be 1, then there will be an extremely costly set of
* randomized tests done against a trivial implementation, which may take
* upwards of a half-hour to complete. There's no set of users who should be
* enabling these, and the only developers that should go anywhere near these
* nobs are the ones who are reading this comment.
*/
#ifdef DEBUG
#include <linux/siphash.h>
static __init void print_node(struct allowedips_node *node, u8 bits)
{
char *fmt_connection = KERN_DEBUG "\t\"%p/%d\" -> \"%p/%d\";\n";
char *fmt_declaration = KERN_DEBUG "\t\"%p/%d\"[style=%s, color=\"#%06x\"];\n";
u8 ip1[16], ip2[16], cidr1, cidr2;
char *style = "dotted";
u32 color = 0;
if (node == NULL)
return;
if (bits == 32) {
fmt_connection = KERN_DEBUG "\t\"%pI4/%d\" -> \"%pI4/%d\";\n";
fmt_declaration = KERN_DEBUG "\t\"%pI4/%d\"[style=%s, color=\"#%06x\"];\n";
} else if (bits == 128) {
fmt_connection = KERN_DEBUG "\t\"%pI6/%d\" -> \"%pI6/%d\";\n";
fmt_declaration = KERN_DEBUG "\t\"%pI6/%d\"[style=%s, color=\"#%06x\"];\n";
}
if (node->peer) {
hsiphash_key_t key = { { 0 } };
memcpy(&key, &node->peer, sizeof(node->peer));
color = hsiphash_1u32(0xdeadbeef, &key) % 200 << 16 |
hsiphash_1u32(0xbabecafe, &key) % 200 << 8 |
hsiphash_1u32(0xabad1dea, &key) % 200;
style = "bold";
}
wg_allowedips_read_node(node, ip1, &cidr1);
printk(fmt_declaration, ip1, cidr1, style, color);
if (node->bit[0]) {
wg_allowedips_read_node(rcu_dereference_raw(node->bit[0]), ip2, &cidr2);
printk(fmt_connection, ip1, cidr1, ip2, cidr2);
}
if (node->bit[1]) {
wg_allowedips_read_node(rcu_dereference_raw(node->bit[1]), ip2, &cidr2);
printk(fmt_connection, ip1, cidr1, ip2, cidr2);
}
if (node->bit[0])
print_node(rcu_dereference_raw(node->bit[0]), bits);
if (node->bit[1])
print_node(rcu_dereference_raw(node->bit[1]), bits);
}
static __init void print_tree(struct allowedips_node __rcu *top, u8 bits)
{
printk(KERN_DEBUG "digraph trie {\n");
print_node(rcu_dereference_raw(top), bits);
printk(KERN_DEBUG "}\n");
}
enum {
NUM_PEERS = 2000,
NUM_RAND_ROUTES = 400,
NUM_MUTATED_ROUTES = 100,
NUM_QUERIES = NUM_RAND_ROUTES * NUM_MUTATED_ROUTES * 30
};
struct horrible_allowedips {
struct hlist_head head;
};
struct horrible_allowedips_node {
struct hlist_node table;
union nf_inet_addr ip;
union nf_inet_addr mask;
u8 ip_version;
void *value;
};
static __init void horrible_allowedips_init(struct horrible_allowedips *table)
{
INIT_HLIST_HEAD(&table->head);
}
static __init void horrible_allowedips_free(struct horrible_allowedips *table)
{
struct horrible_allowedips_node *node;
struct hlist_node *h;
hlist_for_each_entry_safe(node, h, &table->head, table) {
hlist_del(&node->table);
kfree(node);
}
}
static __init inline union nf_inet_addr horrible_cidr_to_mask(u8 cidr)
{
union nf_inet_addr mask;
memset(&mask, 0, sizeof(mask));
memset(&mask.all, 0xff, cidr / 8);
if (cidr % 32)
mask.all[cidr / 32] = (__force u32)htonl(
(0xFFFFFFFFUL << (32 - (cidr % 32))) & 0xFFFFFFFFUL);
return mask;
}
static __init inline u8 horrible_mask_to_cidr(union nf_inet_addr subnet)
{
return hweight32(subnet.all[0]) + hweight32(subnet.all[1]) +
hweight32(subnet.all[2]) + hweight32(subnet.all[3]);
}
static __init inline void
horrible_mask_self(struct horrible_allowedips_node *node)
{
if (node->ip_version == 4) {
node->ip.ip &= node->mask.ip;
} else if (node->ip_version == 6) {
node->ip.ip6[0] &= node->mask.ip6[0];
node->ip.ip6[1] &= node->mask.ip6[1];
node->ip.ip6[2] &= node->mask.ip6[2];
node->ip.ip6[3] &= node->mask.ip6[3];
}
}
static __init inline bool
horrible_match_v4(const struct horrible_allowedips_node *node, struct in_addr *ip)
{
return (ip->s_addr & node->mask.ip) == node->ip.ip;
}
static __init inline bool
horrible_match_v6(const struct horrible_allowedips_node *node, struct in6_addr *ip)
{
return (ip->in6_u.u6_addr32[0] & node->mask.ip6[0]) == node->ip.ip6[0] &&
(ip->in6_u.u6_addr32[1] & node->mask.ip6[1]) == node->ip.ip6[1] &&
(ip->in6_u.u6_addr32[2] & node->mask.ip6[2]) == node->ip.ip6[2] &&
(ip->in6_u.u6_addr32[3] & node->mask.ip6[3]) == node->ip.ip6[3];
}
static __init void
horrible_insert_ordered(struct horrible_allowedips *table, struct horrible_allowedips_node *node)
{
struct horrible_allowedips_node *other = NULL, *where = NULL;
u8 my_cidr = horrible_mask_to_cidr(node->mask);
hlist_for_each_entry(other, &table->head, table) {
if (other->ip_version == node->ip_version &&
!memcmp(&other->mask, &node->mask, sizeof(union nf_inet_addr)) &&
!memcmp(&other->ip, &node->ip, sizeof(union nf_inet_addr))) {
other->value = node->value;
kfree(node);
return;
}
}
hlist_for_each_entry(other, &table->head, table) {
where = other;
if (horrible_mask_to_cidr(other->mask) <= my_cidr)
break;
}
if (!other && !where)
hlist_add_head(&node->table, &table->head);
else if (!other)
hlist_add_behind(&node->table, &where->table);
else
hlist_add_before(&node->table, &where->table);
}
static __init int
horrible_allowedips_insert_v4(struct horrible_allowedips *table,
struct in_addr *ip, u8 cidr, void *value)
{
struct horrible_allowedips_node *node = kzalloc(sizeof(*node), GFP_KERNEL);
if (unlikely(!node))
return -ENOMEM;
node->ip.in = *ip;
node->mask = horrible_cidr_to_mask(cidr);
node->ip_version = 4;
node->value = value;
horrible_mask_self(node);
horrible_insert_ordered(table, node);
return 0;
}
static __init int
horrible_allowedips_insert_v6(struct horrible_allowedips *table,
struct in6_addr *ip, u8 cidr, void *value)
{
struct horrible_allowedips_node *node = kzalloc(sizeof(*node), GFP_KERNEL);
if (unlikely(!node))
return -ENOMEM;
node->ip.in6 = *ip;
node->mask = horrible_cidr_to_mask(cidr);
node->ip_version = 6;
node->value = value;
horrible_mask_self(node);
horrible_insert_ordered(table, node);
return 0;
}
static __init void *
horrible_allowedips_lookup_v4(struct horrible_allowedips *table, struct in_addr *ip)
{
struct horrible_allowedips_node *node;
hlist_for_each_entry(node, &table->head, table) {
if (node->ip_version == 4 && horrible_match_v4(node, ip))
return node->value;
}
return NULL;
}
static __init void *
horrible_allowedips_lookup_v6(struct horrible_allowedips *table, struct in6_addr *ip)
{
struct horrible_allowedips_node *node;
hlist_for_each_entry(node, &table->head, table) {
if (node->ip_version == 6 && horrible_match_v6(node, ip))
return node->value;
}
return NULL;
}
static __init void
horrible_allowedips_remove_by_value(struct horrible_allowedips *table, void *value)
{
struct horrible_allowedips_node *node;
struct hlist_node *h;
hlist_for_each_entry_safe(node, h, &table->head, table) {
if (node->value != value)
continue;
hlist_del(&node->table);
kfree(node);
}
}
static __init bool randomized_test(void)
{
unsigned int i, j, k, mutate_amount, cidr;
u8 ip[16], mutate_mask[16], mutated[16];
struct wg_peer **peers, *peer;
struct horrible_allowedips h;
DEFINE_MUTEX(mutex);
struct allowedips t;
bool ret = false;
mutex_init(&mutex);
wg_allowedips_init(&t);
horrible_allowedips_init(&h);
peers = kcalloc(NUM_PEERS, sizeof(*peers), GFP_KERNEL);
if (unlikely(!peers)) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free;
}
for (i = 0; i < NUM_PEERS; ++i) {
peers[i] = kzalloc(sizeof(*peers[i]), GFP_KERNEL);
if (unlikely(!peers[i])) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free;
}
kref_init(&peers[i]->refcount);
INIT_LIST_HEAD(&peers[i]->allowedips_list);
}
mutex_lock(&mutex);
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
prandom_bytes(ip, 4);
cidr = prandom_u32_max(32) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
if (horrible_allowedips_insert_v4(&h, (struct in_addr *)ip,
cidr, peer) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 4);
prandom_bytes(mutate_mask, 4);
mutate_amount = prandom_u32_max(32);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
<< ((8 - (mutate_amount % 8)) % 8);
for (; k < 4; ++k)
mutate_mask[k] = 0;
for (k = 0; k < 4; ++k)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
prandom_u32_max(256));
cidr = prandom_u32_max(32) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t,
(struct in_addr *)mutated,
cidr, peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
if (horrible_allowedips_insert_v4(&h,
(struct in_addr *)mutated, cidr, peer)) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
}
}
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
prandom_bytes(ip, 16);
cidr = prandom_u32_max(128) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
if (horrible_allowedips_insert_v6(&h, (struct in6_addr *)ip,
cidr, peer) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 16);
prandom_bytes(mutate_mask, 16);
mutate_amount = prandom_u32_max(128);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
<< ((8 - (mutate_amount % 8)) % 8);
for (; k < 4; ++k)
mutate_mask[k] = 0;
for (k = 0; k < 4; ++k)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
prandom_u32_max(256));
cidr = prandom_u32_max(128) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t,
(struct in6_addr *)mutated,
cidr, peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
if (horrible_allowedips_insert_v6(
&h, (struct in6_addr *)mutated, cidr,
peer)) {
pr_err("allowedips random self-test malloc: FAIL\n");
goto free_locked;
}
}
}
mutex_unlock(&mutex);
if (IS_ENABLED(DEBUG_PRINT_TRIE_GRAPHVIZ)) {
print_tree(t.root4, 32);
print_tree(t.root6, 128);
}
for (j = 0;; ++j) {
for (i = 0; i < NUM_QUERIES; ++i) {
prandom_bytes(ip, 4);
if (lookup(t.root4, 32, ip) != horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip)) {
horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip);
pr_err("allowedips random v4 self-test: FAIL\n");
goto free;
}
prandom_bytes(ip, 16);
if (lookup(t.root6, 128, ip) != horrible_allowedips_lookup_v6(&h, (struct in6_addr *)ip)) {
pr_err("allowedips random v6 self-test: FAIL\n");
goto free;
}
}
if (j >= NUM_PEERS)
break;
mutex_lock(&mutex);
wg_allowedips_remove_by_peer(&t, peers[j], &mutex);
mutex_unlock(&mutex);
horrible_allowedips_remove_by_value(&h, peers[j]);
}
if (t.root4 || t.root6) {
pr_err("allowedips random self-test removal: FAIL\n");
goto free;
}
ret = true;
free:
mutex_lock(&mutex);
free_locked:
wg_allowedips_free(&t, &mutex);
mutex_unlock(&mutex);
horrible_allowedips_free(&h);
if (peers) {
for (i = 0; i < NUM_PEERS; ++i)
kfree(peers[i]);
}
kfree(peers);
return ret;
}
static __init inline struct in_addr *ip4(u8 a, u8 b, u8 c, u8 d)
{
static struct in_addr ip;
u8 *split = (u8 *)&ip;
split[0] = a;
split[1] = b;
split[2] = c;
split[3] = d;
return &ip;
}
static __init inline struct in6_addr *ip6(u32 a, u32 b, u32 c, u32 d)
{
static struct in6_addr ip;
__be32 *split = (__be32 *)&ip;
split[0] = cpu_to_be32(a);
split[1] = cpu_to_be32(b);
split[2] = cpu_to_be32(c);
split[3] = cpu_to_be32(d);
return &ip;
}
static __init struct wg_peer *init_peer(void)
{
struct wg_peer *peer = kzalloc(sizeof(*peer), GFP_KERNEL);
if (!peer)
return NULL;
kref_init(&peer->refcount);
INIT_LIST_HEAD(&peer->allowedips_list);
return peer;
}
#define insert(version, mem, ipa, ipb, ipc, ipd, cidr) \
wg_allowedips_insert_v##version(&t, ip##version(ipa, ipb, ipc, ipd), \
cidr, mem, &mutex)
#define maybe_fail() do { \
++i; \
if (!_s) { \
pr_info("allowedips self-test %zu: FAIL\n", i); \
success = false; \
} \
} while (0)
#define test(version, mem, ipa, ipb, ipc, ipd) do { \
bool _s = lookup(t.root##version, (version) == 4 ? 32 : 128, \
ip##version(ipa, ipb, ipc, ipd)) == (mem); \
maybe_fail(); \
} while (0)
#define test_negative(version, mem, ipa, ipb, ipc, ipd) do { \
bool _s = lookup(t.root##version, (version) == 4 ? 32 : 128, \
ip##version(ipa, ipb, ipc, ipd)) != (mem); \
maybe_fail(); \
} while (0)
#define test_boolean(cond) do { \
bool _s = (cond); \
maybe_fail(); \
} while (0)
bool __init wg_allowedips_selftest(void)
{
bool found_a = false, found_b = false, found_c = false, found_d = false,
found_e = false, found_other = false;
struct wg_peer *a = init_peer(), *b = init_peer(), *c = init_peer(),
*d = init_peer(), *e = init_peer(), *f = init_peer(),
*g = init_peer(), *h = init_peer();
struct allowedips_node *iter_node;
bool success = false;
struct allowedips t;
DEFINE_MUTEX(mutex);
struct in6_addr ip;
size_t i = 0, count = 0;
__be64 part;
mutex_init(&mutex);
mutex_lock(&mutex);
wg_allowedips_init(&t);
if (!a || !b || !c || !d || !e || !f || !g || !h) {
pr_err("allowedips self-test malloc: FAIL\n");
goto free;
}
insert(4, a, 192, 168, 4, 0, 24);
insert(4, b, 192, 168, 4, 4, 32);
insert(4, c, 192, 168, 0, 0, 16);
insert(4, d, 192, 95, 5, 64, 27);
/* replaces previous entry, and maskself is required */
insert(4, c, 192, 95, 5, 65, 27);
insert(6, d, 0x26075300, 0x60006b00, 0, 0xc05f0543, 128);
insert(6, c, 0x26075300, 0x60006b00, 0, 0, 64);
insert(4, e, 0, 0, 0, 0, 0);
insert(6, e, 0, 0, 0, 0, 0);
/* replaces previous entry */
insert(6, f, 0, 0, 0, 0, 0);
insert(6, g, 0x24046800, 0, 0, 0, 32);
/* maskself is required */
insert(6, h, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef, 64);
insert(6, a, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef, 128);
insert(6, c, 0x24446800, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128);
insert(6, b, 0x24446800, 0xf0e40800, 0xeeaebeef, 0, 98);
insert(4, g, 64, 15, 112, 0, 20);
/* maskself is required */
insert(4, h, 64, 15, 123, 211, 25);
insert(4, a, 10, 0, 0, 0, 25);
insert(4, b, 10, 0, 0, 128, 25);
insert(4, a, 10, 1, 0, 0, 30);
insert(4, b, 10, 1, 0, 4, 30);
insert(4, c, 10, 1, 0, 8, 29);
insert(4, d, 10, 1, 0, 16, 29);
if (IS_ENABLED(DEBUG_PRINT_TRIE_GRAPHVIZ)) {
print_tree(t.root4, 32);
print_tree(t.root6, 128);
}
success = true;
test(4, a, 192, 168, 4, 20);
test(4, a, 192, 168, 4, 0);
test(4, b, 192, 168, 4, 4);
test(4, c, 192, 168, 200, 182);
test(4, c, 192, 95, 5, 68);
test(4, e, 192, 95, 5, 96);
test(6, d, 0x26075300, 0x60006b00, 0, 0xc05f0543);
test(6, c, 0x26075300, 0x60006b00, 0, 0xc02e01ee);
test(6, f, 0x26075300, 0x60006b01, 0, 0);
test(6, g, 0x24046800, 0x40040806, 0, 0x1006);
test(6, g, 0x24046800, 0x40040806, 0x1234, 0x5678);
test(6, f, 0x240467ff, 0x40040806, 0x1234, 0x5678);
test(6, f, 0x24046801, 0x40040806, 0x1234, 0x5678);
test(6, h, 0x24046800, 0x40040800, 0x1234, 0x5678);
test(6, h, 0x24046800, 0x40040800, 0, 0);
test(6, h, 0x24046800, 0x40040800, 0x10101010, 0x10101010);
test(6, a, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef);
test(4, g, 64, 15, 116, 26);
test(4, g, 64, 15, 127, 3);
test(4, g, 64, 15, 123, 1);
test(4, h, 64, 15, 123, 128);
test(4, h, 64, 15, 123, 129);
test(4, a, 10, 0, 0, 52);
test(4, b, 10, 0, 0, 220);
test(4, a, 10, 1, 0, 2);
test(4, b, 10, 1, 0, 6);
test(4, c, 10, 1, 0, 10);
test(4, d, 10, 1, 0, 20);
insert(4, a, 1, 0, 0, 0, 32);
insert(4, a, 64, 0, 0, 0, 32);
insert(4, a, 128, 0, 0, 0, 32);
insert(4, a, 192, 0, 0, 0, 32);
insert(4, a, 255, 0, 0, 0, 32);
wg_allowedips_remove_by_peer(&t, a, &mutex);
test_negative(4, a, 1, 0, 0, 0);
test_negative(4, a, 64, 0, 0, 0);
test_negative(4, a, 128, 0, 0, 0);
test_negative(4, a, 192, 0, 0, 0);
test_negative(4, a, 255, 0, 0, 0);
wg_allowedips_free(&t, &mutex);
wg_allowedips_init(&t);
insert(4, a, 192, 168, 0, 0, 16);
insert(4, a, 192, 168, 0, 0, 24);
wg_allowedips_remove_by_peer(&t, a, &mutex);
test_negative(4, a, 192, 168, 0, 1);
/* These will hit the WARN_ON(len >= 128) in free_node if something
* goes wrong.
*/
for (i = 0; i < 128; ++i) {
part = cpu_to_be64(~(1LLU << (i % 64)));
memset(&ip, 0xff, 16);
memcpy((u8 *)&ip + (i < 64) * 8, &part, 8);
wg_allowedips_insert_v6(&t, &ip, 128, a, &mutex);
}
wg_allowedips_free(&t, &mutex);
wg_allowedips_init(&t);
insert(4, a, 192, 95, 5, 93, 27);
insert(6, a, 0x26075300, 0x60006b00, 0, 0xc05f0543, 128);
insert(4, a, 10, 1, 0, 20, 29);
insert(6, a, 0x26075300, 0x6d8a6bf8, 0xdab1f1df, 0xc05f1523, 83);
insert(6, a, 0x26075300, 0x6d8a6bf8, 0xdab1f1df, 0xc05f1523, 21);
list_for_each_entry(iter_node, &a->allowedips_list, peer_list) {
u8 cidr, ip[16] __aligned(__alignof(u64));
int family = wg_allowedips_read_node(iter_node, ip, &cidr);
count++;
if (cidr == 27 && family == AF_INET &&
!memcmp(ip, ip4(192, 95, 5, 64), sizeof(struct in_addr)))
found_a = true;
else if (cidr == 128 && family == AF_INET6 &&
!memcmp(ip, ip6(0x26075300, 0x60006b00, 0, 0xc05f0543),
sizeof(struct in6_addr)))
found_b = true;
else if (cidr == 29 && family == AF_INET &&
!memcmp(ip, ip4(10, 1, 0, 16), sizeof(struct in_addr)))
found_c = true;
else if (cidr == 83 && family == AF_INET6 &&
!memcmp(ip, ip6(0x26075300, 0x6d8a6bf8, 0xdab1e000, 0),
sizeof(struct in6_addr)))
found_d = true;
else if (cidr == 21 && family == AF_INET6 &&
!memcmp(ip, ip6(0x26075000, 0, 0, 0),
sizeof(struct in6_addr)))
found_e = true;
else
found_other = true;
}
test_boolean(count == 5);
test_boolean(found_a);
test_boolean(found_b);
test_boolean(found_c);
test_boolean(found_d);
test_boolean(found_e);
test_boolean(!found_other);
if (IS_ENABLED(DEBUG_RANDOM_TRIE) && success)
success = randomized_test();
if (success)
pr_info("allowedips self-tests: pass\n");
free:
wg_allowedips_free(&t, &mutex);
kfree(a);
kfree(b);
kfree(c);
kfree(d);
kfree(e);
kfree(f);
kfree(g);
kfree(h);
mutex_unlock(&mutex);
return success;
}
#undef test_negative
#undef test
#undef remove
#undef insert
#undef init_peer
#endif
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