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dhcp6-client: Store lease timeouts T1 and T1 in client struct

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Since we now have the possibility to request prefixes to be delegated
without corresponding IPv6 addresses, it does not make sense to store
lease T1 and T2 timeouts in the otherwise unused IA_NA structure.
Therefore lease timeouts T1 and T2 are moved to the DHCPv6 client
structure, as there will be only one set of stateful timeouts required
by RFC 7550, Section 4.3.
This commit is contained in:
Patrik Flykt 2018-09-11 16:26:01 -06:00
parent 134ebaa45e
commit 9a7225de67
4 changed files with 12 additions and 34 deletions
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2
src/libsystemd-network/dhcp6-internal.h
View File

@ -73,8 +73,6 @@ struct DHCP6IA {
struct ia_pd ia_pd;
struct ia_ta ia_ta;
};
sd_event_source *timeout_t1;
sd_event_source *timeout_t2;
LIST_HEAD(DHCP6Address, addresses);
};

1
src/libsystemd-network/dhcp6-lease-internal.h
View File

@ -37,7 +37,6 @@ struct sd_dhcp6_lease {
size_t ntp_fqdn_count;
};
int dhcp6_lease_clear_timers(DHCP6IA *ia);
int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire);
DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia);

32
src/libsystemd-network/sd-dhcp6-client.c
View File

@ -47,6 +47,8 @@ struct sd_dhcp6_client {
uint16_t arp_type;
DHCP6IA ia_na;
DHCP6IA ia_pd;
sd_event_source *timeout_t1;
sd_event_source *timeout_t2;
int request;
be32_t transaction_id;
usec_t transaction_start;
@ -388,11 +390,6 @@ static void client_notify(sd_dhcp6_client *client, int event) {
static void client_set_lease(sd_dhcp6_client *client, sd_dhcp6_lease *lease) {
assert(client);
if (client->lease) {
dhcp6_lease_clear_timers(&client->lease->ia);
sd_dhcp6_lease_unref(client->lease);
}
client->lease = lease;
}
@ -407,11 +404,6 @@ static int client_reset(sd_dhcp6_client *client) {
client->transaction_id = 0;
client->transaction_start = 0;
client->ia_na.timeout_t1 =
sd_event_source_unref(client->ia_na.timeout_t1);
client->ia_na.timeout_t2 =
sd_event_source_unref(client->ia_na.timeout_t2);
client->retransmit_time = 0;
client->retransmit_count = 0;
client->timeout_resend = sd_event_source_unref(client->timeout_resend);
@ -603,8 +595,8 @@ static int client_timeout_t2(sd_event_source *s, uint64_t usec, void *userdata)
assert(client);
assert(client->lease);
client->lease->ia.timeout_t2 =
sd_event_source_unref(client->lease->ia.timeout_t2);
client->timeout_t2 =
sd_event_source_unref(client->timeout_t2);
log_dhcp6_client(client, "Timeout T2");
@ -620,8 +612,8 @@ static int client_timeout_t1(sd_event_source *s, uint64_t usec, void *userdata)
assert(client);
assert(client->lease);
client->lease->ia.timeout_t1 =
sd_event_source_unref(client->lease->ia.timeout_t1);
client->timeout_t1 =
sd_event_source_unref(client->timeout_t1);
log_dhcp6_client(client, "Timeout T1");
@ -1332,19 +1324,19 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state) {
format_timespan(time_string, FORMAT_TIMESPAN_MAX, timeout, USEC_PER_SEC));
r = sd_event_add_time(client->event,
&client->lease->ia.timeout_t1,
&client->timeout_t1,
clock_boottime_or_monotonic(), time_now + timeout,
10 * USEC_PER_SEC, client_timeout_t1,
client);
if (r < 0)
goto error;
r = sd_event_source_set_priority(client->lease->ia.timeout_t1,
r = sd_event_source_set_priority(client->timeout_t1,
client->event_priority);
if (r < 0)
goto error;
r = sd_event_source_set_description(client->lease->ia.timeout_t1, "dhcp6-t1-timeout");
r = sd_event_source_set_description(client->timeout_t1, "dhcp6-t1-timeout");
if (r < 0)
goto error;
@ -1354,19 +1346,19 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state) {
format_timespan(time_string, FORMAT_TIMESPAN_MAX, timeout, USEC_PER_SEC));
r = sd_event_add_time(client->event,
&client->lease->ia.timeout_t2,
&client->timeout_t2,
clock_boottime_or_monotonic(), time_now + timeout,
10 * USEC_PER_SEC, client_timeout_t2,
client);
if (r < 0)
goto error;
r = sd_event_source_set_priority(client->lease->ia.timeout_t2,
r = sd_event_source_set_priority(client->timeout_t2,
client->event_priority);
if (r < 0)
goto error;
r = sd_event_source_set_description(client->lease->ia.timeout_t2, "dhcp6-t2-timeout");
r = sd_event_source_set_description(client->timeout_t2, "dhcp6-t2-timeout");
if (r < 0)
goto error;

11
src/libsystemd-network/sd-dhcp6-lease.c
View File

@ -11,15 +11,6 @@
#include "strv.h"
#include "util.h"
int dhcp6_lease_clear_timers(DHCP6IA *ia) {
assert_return(ia, -EINVAL);
ia->timeout_t1 = sd_event_source_unref(ia->timeout_t1);
ia->timeout_t2 = sd_event_source_unref(ia->timeout_t2);
return 0;
}
int dhcp6_lease_ia_rebind_expire(const DHCP6IA *ia, uint32_t *expire) {
DHCP6Address *addr;
uint32_t valid = 0, t;
@ -48,8 +39,6 @@ DHCP6IA *dhcp6_lease_free_ia(DHCP6IA *ia) {
if (!ia)
return NULL;
dhcp6_lease_clear_timers(ia);
while (ia->addresses) {
address = ia->addresses;