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network/nexthop: introduce ref/unref functions for NextHop object

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This commit is contained in:
Yu Watanabe 2024-01-03 04:41:27 +09:00
parent 2a75f23b0d
commit 59ac53a690
3 changed files with 57 additions and 28 deletions
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2
src/network/networkd-network.c
View File

@ -784,7 +784,7 @@ static Network *network_free(Network *network) {
set_free_free(network->ipv6_proxy_ndp_addresses);
ordered_hashmap_free(network->addresses_by_section);
hashmap_free_with_destructor(network->routes_by_section, route_free);
ordered_hashmap_free_with_destructor(network->nexthops_by_section, nexthop_free);
ordered_hashmap_free(network->nexthops_by_section);
hashmap_free_with_destructor(network->bridge_fdb_entries_by_section, bridge_fdb_free);
hashmap_free_with_destructor(network->bridge_mdb_entries_by_section, bridge_mdb_free);
ordered_hashmap_free(network->neighbors_by_section);

78
src/network/networkd-nexthop.c
View File

@ -18,28 +18,45 @@
#include "stdio-util.h"
#include "string-util.h"
NextHop *nexthop_free(NextHop *nexthop) {
if (!nexthop)
return NULL;
static NextHop* nexthop_detach_impl(NextHop *nexthop) {
assert(nexthop);
assert(!nexthop->manager || !nexthop->network);
if (nexthop->network) {
assert(nexthop->section);
ordered_hashmap_remove(nexthop->network->nexthops_by_section, nexthop->section);
nexthop->network = NULL;
return nexthop;
}
config_section_free(nexthop->section);
if (nexthop->manager) {
assert(nexthop->id > 0);
hashmap_remove(nexthop->manager->nexthops_by_id, UINT32_TO_PTR(nexthop->id));
nexthop->manager = NULL;
return nexthop;
}
return NULL;
}
static void nexthop_detach(NextHop *nexthop) {
nexthop_unref(nexthop_detach_impl(nexthop));
}
static NextHop* nexthop_free(NextHop *nexthop) {
if (!nexthop)
return NULL;
nexthop_detach_impl(nexthop);
config_section_free(nexthop->section);
hashmap_free_free(nexthop->group);
return mfree(nexthop);
}
DEFINE_SECTION_CLEANUP_FUNCTIONS(NextHop, nexthop_free);
DEFINE_TRIVIAL_REF_UNREF_FUNC(NextHop, nexthop, nexthop_free);
DEFINE_SECTION_CLEANUP_FUNCTIONS(NextHop, nexthop_unref);
DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
nexthop_hash_ops,
@ -47,17 +64,25 @@ DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
trivial_hash_func,
trivial_compare_func,
NextHop,
nexthop_free);
nexthop_detach);
DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
nexthop_section_hash_ops,
ConfigSection,
config_section_hash_func,
config_section_compare_func,
NextHop,
nexthop_detach);
static int nexthop_new(NextHop **ret) {
_cleanup_(nexthop_freep) NextHop *nexthop = NULL;
_cleanup_(nexthop_unrefp) NextHop *nexthop = NULL;
nexthop = new(NextHop, 1);
if (!nexthop)
return -ENOMEM;
*nexthop = (NextHop) {
.family = AF_UNSPEC,
.n_ref = 1,
.onlink = -1,
};
@ -68,7 +93,7 @@ static int nexthop_new(NextHop **ret) {
static int nexthop_new_static(Network *network, const char *filename, unsigned section_line, NextHop **ret) {
_cleanup_(config_section_freep) ConfigSection *n = NULL;
_cleanup_(nexthop_freep) NextHop *nexthop = NULL;
_cleanup_(nexthop_unrefp) NextHop *nexthop = NULL;
int r;
assert(network);
@ -95,7 +120,7 @@ static int nexthop_new_static(Network *network, const char *filename, unsigned s
nexthop->section = TAKE_PTR(n);
nexthop->source = NETWORK_CONFIG_SOURCE_STATIC;
r = ordered_hashmap_ensure_put(&network->nexthops_by_section, &config_section_hash_ops, nexthop->section, nexthop);
r = ordered_hashmap_ensure_put(&network->nexthops_by_section, &nexthop_section_hash_ops, nexthop->section, nexthop);
if (r < 0)
return r;
@ -171,7 +196,7 @@ static int nexthop_compare_full(const NextHop *a, const NextHop *b) {
}
static int nexthop_dup(const NextHop *src, NextHop **ret) {
_cleanup_(nexthop_freep) NextHop *dest = NULL;
_cleanup_(nexthop_unrefp) NextHop *dest = NULL;
struct nexthop_grp *nhg;
int r;
@ -182,7 +207,8 @@ static int nexthop_dup(const NextHop *src, NextHop **ret) {
if (!dest)
return -ENOMEM;
/* unset all pointers */
/* clear the reference counter and all pointers */
dest->n_ref = 1;
dest->manager = NULL;
dest->network = NULL;
dest->section = NULL;
@ -326,7 +352,7 @@ static int nexthop_get_request(Link *link, const NextHop *in, Request **ret) {
}
static int nexthop_add_new(Manager *manager, uint32_t id, NextHop **ret) {
_cleanup_(nexthop_freep) NextHop *nexthop = NULL;
_cleanup_(nexthop_unrefp) NextHop *nexthop = NULL;
int r;
assert(manager);
@ -609,7 +635,7 @@ static int nexthop_process_request(Request *req, Link *link, NextHop *nexthop) {
}
static int link_request_nexthop(Link *link, const NextHop *nexthop) {
_cleanup_(nexthop_freep) NextHop *tmp = NULL;
_cleanup_(nexthop_unrefp) NextHop *tmp = NULL;
NextHop *existing = NULL;
int r;
@ -644,7 +670,7 @@ static int link_request_nexthop(Link *link, const NextHop *nexthop) {
log_nexthop_debug(tmp, "Requesting", link->manager);
r = link_queue_request_safe(link, REQUEST_TYPE_NEXTHOP,
tmp,
nexthop_free,
nexthop_unref,
nexthop_hash_func,
nexthop_compare_func,
nexthop_process_request,
@ -902,7 +928,7 @@ int manager_rtnl_process_nexthop(sd_netlink *rtnl, sd_netlink_message *message,
if (nexthop) {
nexthop_enter_removed(nexthop);
log_nexthop_debug(nexthop, "Forgetting removed", m);
nexthop_free(nexthop);
nexthop_detach(nexthop);
} else
log_nexthop_debug(&(const NextHop) { .id = id }, "Kernel removed unknown", m);
@ -1065,7 +1091,7 @@ int network_drop_invalid_nexthops(Network *network) {
ORDERED_HASHMAP_FOREACH(nh, network->nexthops_by_section) {
if (nexthop_section_verify(nh) < 0) {
nexthop_free(nh);
nexthop_detach(nh);
continue;
}
@ -1080,8 +1106,8 @@ int network_drop_invalid_nexthops(Network *network) {
dup->section->filename,
nh->id, nh->section->line,
dup->section->line, dup->section->line);
/* nexthop_free() will drop the nexthop from nexthops_by_section. */
nexthop_free(dup);
/* nexthop_detach() will drop the nexthop from nexthops_by_section. */
nexthop_detach(dup);
}
r = hashmap_ensure_put(&nexthops, NULL, UINT32_TO_PTR(nh->id), nh);
@ -1132,7 +1158,7 @@ int config_parse_nexthop_id(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
uint32_t id;
int r;
@ -1182,7 +1208,7 @@ int config_parse_nexthop_gateway(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
int r;
@ -1227,7 +1253,7 @@ int config_parse_nexthop_family(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
AddressFamily a;
int r;
@ -1293,7 +1319,7 @@ int config_parse_nexthop_onlink(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
int r;
@ -1330,7 +1356,7 @@ int config_parse_nexthop_blackhole(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
int r;
@ -1369,7 +1395,7 @@ int config_parse_nexthop_group(
void *data,
void *userdata) {
_cleanup_(nexthop_free_or_set_invalidp) NextHop *n = NULL;
_cleanup_(nexthop_unref_or_set_invalidp) NextHop *n = NULL;
Network *network = userdata;
int r;

5
src/network/networkd-nexthop.h
View File

@ -24,6 +24,8 @@ typedef struct NextHop {
NetworkConfigSource source;
NetworkConfigState state;
unsigned n_ref;
uint8_t protocol;
int ifindex;
uint32_t id;
@ -35,7 +37,8 @@ typedef struct NextHop {
Hashmap *group;
} NextHop;
NextHop *nexthop_free(NextHop *nexthop);
NextHop* nexthop_ref(NextHop *nexthop);
NextHop* nexthop_unref(NextHop *nexthop);
int network_drop_invalid_nexthops(Network *network);