summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd-network/dhcp-server-internal.h4
-rw-r--r--src/libsystemd-network/sd-dhcp-server.c34
-rw-r--r--src/network/networkd-link.c16
-rw-r--r--src/network/networkd-network-gperf.gperf2
-rw-r--r--src/network/networkd.h1
-rw-r--r--src/systemd/sd-dhcp-server.h3
6 files changed, 55 insertions, 5 deletions
diff --git a/src/libsystemd-network/dhcp-server-internal.h b/src/libsystemd-network/dhcp-server-internal.h
index 74b09d6f37..4f562c73ef 100644
--- a/src/libsystemd-network/dhcp-server-internal.h
+++ b/src/libsystemd-network/dhcp-server-internal.h
@@ -65,6 +65,8 @@ struct sd_dhcp_server {
Hashmap *leases_by_client_id;
DHCPLease **bound_leases;
+
+ uint32_t max_lease_time, default_lease_time;
};
typedef struct DHCPRequest {
@@ -76,7 +78,7 @@ typedef struct DHCPRequest {
size_t max_optlen;
be32_t server_id;
be32_t requested_ip;
- int lifetime;
+ uint32_t lifetime;
} DHCPRequest;
DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_server*, sd_dhcp_server_unref);
diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c
index bfb799a63d..35564d8317 100644
--- a/src/libsystemd-network/sd-dhcp-server.c
+++ b/src/libsystemd-network/sd-dhcp-server.c
@@ -28,7 +28,8 @@
#include "dhcp-server-internal.h"
#include "dhcp-internal.h"
-#define DHCP_DEFAULT_LEASE_TIME 3600 /* one hour */
+#define DHCP_DEFAULT_LEASE_TIME_USEC USEC_PER_HOUR
+#define DHCP_MAX_LEASE_TIME_USEC (USEC_PER_HOUR*12)
int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server,
struct in_addr *address,
@@ -172,6 +173,8 @@ int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex) {
server->netmask = htobe32(INADDR_ANY);
server->ifindex = ifindex;
server->leases_by_client_id = hashmap_new(&client_id_hash_ops);
+ server->default_lease_time = DIV_ROUND_UP(DHCP_DEFAULT_LEASE_TIME_USEC, USEC_PER_SEC);
+ server->max_lease_time = DIV_ROUND_UP(DHCP_MAX_LEASE_TIME_USEC, USEC_PER_SEC);
*ret = server;
server = NULL;
@@ -598,7 +601,7 @@ static void dhcp_request_free(DHCPRequest *req) {
DEFINE_TRIVIAL_CLEANUP_FUNC(DHCPRequest*, dhcp_request_free);
#define _cleanup_dhcp_request_free_ _cleanup_(dhcp_request_freep)
-static int ensure_sane_request(DHCPRequest *req, DHCPMessage *message) {
+static int ensure_sane_request(sd_dhcp_server *server, DHCPRequest *req, DHCPMessage *message) {
assert(req);
assert(message);
@@ -624,7 +627,10 @@ static int ensure_sane_request(DHCPRequest *req, DHCPMessage *message) {
req->max_optlen = DHCP_MIN_OPTIONS_SIZE;
if (req->lifetime <= 0)
- req->lifetime = DHCP_DEFAULT_LEASE_TIME;
+ req->lifetime = MAX(1ULL, server->default_lease_time);
+
+ if (server->max_lease_time > 0 && req->lifetime > server->max_lease_time)
+ req->lifetime = server->max_lease_time;
return 0;
}
@@ -665,7 +671,7 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
if (type < 0)
return 0;
- r = ensure_sane_request(req, message);
+ r = ensure_sane_request(server, req, message);
if (r < 0)
/* this only fails on critical errors */
return r;
@@ -1016,3 +1022,23 @@ int sd_dhcp_server_set_timezone(sd_dhcp_server *server, const char *timezone) {
return 1;
}
+
+int sd_dhcp_server_set_max_lease_time(sd_dhcp_server *server, uint32_t t) {
+ assert_return(server, -EINVAL);
+
+ if (t == server->max_lease_time)
+ return 0;
+
+ server->max_lease_time = t;
+ return 1;
+}
+
+int sd_dhcp_server_set_default_lease_time(sd_dhcp_server *server, uint32_t t) {
+ assert_return(server, -EINVAL);
+
+ if (t == server->default_lease_time)
+ return 0;
+
+ server->default_lease_time = t;
+ return 1;
+}
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 09c27de22b..5b7ebfb79d 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -673,6 +673,22 @@ static int link_enter_set_addresses(Link *link) {
return r;
*/
+ if (link->network->dhcp_server_max_lease_time_usec > 0) {
+ r = sd_dhcp_server_set_max_lease_time(
+ link->dhcp_server,
+ DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC));
+ if (r < 0)
+ return r;
+ }
+
+ if (link->network->dhcp_server_default_lease_time_usec > 0) {
+ r = sd_dhcp_server_set_default_lease_time(
+ link->dhcp_server,
+ DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC));
+ if (r < 0)
+ return r;
+ }
+
if (link->network->dhcp_server_emit_timezone) {
_cleanup_free_ char *buffer = NULL;
const char *tz;
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index c8c612d4eb..21e33efb42 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -74,6 +74,8 @@ DHCP.CriticalConnection, config_parse_bool, 0
DHCP.VendorClassIdentifier, config_parse_string, 0, offsetof(Network, dhcp_vendor_class_identifier)
DHCP.RouteMetric, config_parse_unsigned, 0, offsetof(Network, dhcp_route_metric)
DHCP.UseTimezone, config_parse_bool, 0, offsetof(Network, dhcp_timezone)
+DHCPServer.MaxLeaseTimeSec, config_parse_sec, 0, offsetof(Network, dhcp_server_max_lease_time_usec)
+DHCPServer.DefaultLeaseTimeSec,config_parse_sec, 0, offsetof(Network, dhcp_server_default_lease_time_usec)
DHCPServer.EmitTimezone, config_parse_bool, 0, offsetof(Network, dhcp_server_emit_timezone)
DHCPServer.Timezone, config_parse_timezone, 0, offsetof(Network, dhcp_server_timezone)
Bridge.Cost, config_parse_unsigned, 0, offsetof(Network, cost)
diff --git a/src/network/networkd.h b/src/network/networkd.h
index a337ea7bf0..d5da764bab 100644
--- a/src/network/networkd.h
+++ b/src/network/networkd.h
@@ -152,6 +152,7 @@ struct Network {
bool dhcp_server;
char *dhcp_server_timezone;
bool dhcp_server_emit_timezone;
+ usec_t dhcp_server_default_lease_time_usec, dhcp_server_max_lease_time_usec;
bool use_bpdu;
bool hairpin;
diff --git a/src/systemd/sd-dhcp-server.h b/src/systemd/sd-dhcp-server.h
index a2e1995cf9..e070174a88 100644
--- a/src/systemd/sd-dhcp-server.h
+++ b/src/systemd/sd-dhcp-server.h
@@ -49,5 +49,8 @@ int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, struct in_addr *start,
int sd_dhcp_server_set_timezone(sd_dhcp_server *server, const char *timezone);
+int sd_dhcp_server_set_max_lease_time(sd_dhcp_server *server, uint32_t t);
+int sd_dhcp_server_set_default_lease_time(sd_dhcp_server *server, uint32_t t);
+
int sd_dhcp_server_forcerenew(sd_dhcp_server *server);
#endif
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-02 20:55:41 +0000