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network: add [DHCPServer] RapidCommit= setting

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This commit is contained in:
Yu Watanabe 2023-11-08 01:33:43 +09:00
parent 538ff0a60a
commit 1fa0a4eff7
5 changed files with 20 additions and 0 deletions
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12
man/systemd.network.xml
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@ -3768,6 +3768,18 @@ ServerAddress=192.168.0.1/24</programlisting>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>RapidCommit=</varname></term>
<listitem>
<para>Takes a boolean. When true, the server supports
<ulink url="https://datatracker.ietf.org/doc/html/rfc4039">RFC 4039</ulink>. When a client sends
a DHCPDISCOVER message with the Rapid Commit option to the server, then the server will reply with
a DHCPACK message to the client, instead of DHCPOFFER. Defaults to true.</para>
<xi:include href="version-info.xml" xpointer="v255"/>
</listitem>
</varlistentry>
</variablelist>
</refsect1>

5
src/network/networkd-dhcp-server.c
View file

@ -418,6 +418,11 @@ static int dhcp4_server_configure(Link *link) {
if (r < 0)
return log_link_warning_errno(link, r, "Failed to set boot filename for DHCPv4 server instance: %m");
r = sd_dhcp_server_set_rapid_commit(link->dhcp_server, link->network->dhcp_server_rapid_commit);
if (r < 0)
return log_link_warning_errno(link, r, "Failed to %s Rapid Commit support for DHCPv4 server instance: %m",
enable_disable(link->network->dhcp_server_rapid_commit));
for (sd_dhcp_lease_server_type_t type = 0; type < _SD_DHCP_LEASE_SERVER_TYPE_MAX; type ++) {
if (!link->network->dhcp_server_emit[type].emit)

1
src/network/networkd-network-gperf.gperf
View file

@ -342,6 +342,7 @@ DHCPServer.BindToInterface, config_parse_bool,
DHCPServer.BootServerAddress, config_parse_in_addr_non_null, AF_INET, offsetof(Network, dhcp_server_boot_server_address)
DHCPServer.BootServerName, config_parse_dns_name, 0, offsetof(Network, dhcp_server_boot_server_name)
DHCPServer.BootFilename, config_parse_string, CONFIG_PARSE_STRING_SAFE_AND_ASCII, offsetof(Network, dhcp_server_boot_filename)
DHCPServer.RapidCommit, config_parse_bool, 0, offsetof(Network, dhcp_server_rapid_commit)
DHCPServerStaticLease.Address, config_parse_dhcp_static_lease_address, 0, 0
DHCPServerStaticLease.MACAddress, config_parse_dhcp_static_lease_hwaddr, 0, 0
Bridge.Cost, config_parse_uint32, 0, offsetof(Network, cost)

1
src/network/networkd-network.c
View file

@ -428,6 +428,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
.dhcp_server_emit[SD_DHCP_LEASE_SIP].emit = true,
.dhcp_server_emit_router = true,
.dhcp_server_emit_timezone = true,
.dhcp_server_rapid_commit = true,
.router_lifetime_usec = RADV_DEFAULT_ROUTER_LIFETIME_USEC,
.router_dns_lifetime_usec = RADV_DEFAULT_VALID_LIFETIME_USEC,

1
src/network/networkd-network.h
View file

@ -228,6 +228,7 @@ struct Network {
char *dhcp_server_boot_server_name;
char *dhcp_server_boot_filename;
usec_t dhcp_server_ipv6_only_preferred_usec;
bool dhcp_server_rapid_commit;
/* link-local addressing support */
AddressFamily link_local;