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https://gitlab.freedesktop.org/NetworkManager/NetworkManager
synced 2024-09-06 17:14:02 +00:00
device: support the DHCP DSCP property
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parent
fcd907e062
commit
3cf6a805ba
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@ -935,6 +935,9 @@ ipv6.ip6-privacy=0
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<varlistentry>
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<term><varname>ipv4.dhcp-client-id</varname></term>
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</varlistentry>
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<varlistentry>
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<term><varname>ipv4.dhcp-dscp</varname></term>
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</varlistentry>
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<varlistentry>
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<term><varname>ipv4.dhcp-iaid</varname></term>
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<listitem><para>If left unspecified, it defaults to "ifname".</para></listitem>
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@ -2185,6 +2185,52 @@ out_good:
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return result;
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}
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static guint8
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_prop_get_ipv4_dhcp_dscp(NMDevice *self, gboolean *out_dscp_explicit)
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{
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gs_free_error GError *error = NULL;
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NMConnection *connection;
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NMSettingIPConfig *s_ip;
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const char *str;
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connection = nm_device_get_applied_connection(self);
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s_ip = nm_connection_get_setting_ip_config(connection, AF_INET);
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g_return_val_if_fail(s_ip, 0);
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NM_SET_OUT(out_dscp_explicit, TRUE);
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str = nm_setting_ip_config_get_dhcp_dscp(s_ip);
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if (str) {
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nm_assert(nm_utils_validate_dhcp_dscp(str, NULL));
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} else {
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str = nm_config_data_get_connection_default(NM_CONFIG_GET_DATA,
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NM_CON_DEFAULT("ipv4.dhcp-dscp"),
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self);
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if (!str || !str[0]) {
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str = "CS0";
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NM_SET_OUT(out_dscp_explicit, FALSE);
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} else if (!nm_utils_validate_dhcp_dscp(str, &error)) {
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_LOGW(LOGD_DEVICE,
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"invalid global default value '%s' for ipv4.%s: %s",
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str,
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NM_SETTING_IP_CONFIG_DHCP_DSCP,
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error->message);
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str = "CS0";
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NM_SET_OUT(out_dscp_explicit, FALSE);
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}
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}
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if (nm_streq(str, "CS0")) {
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return 0;
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} else if (nm_streq(str, "CS6")) {
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return 0x30;
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} else if (nm_streq(str, "CS4")) {
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return 0x20;
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};
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nm_assert_unreachable_val(0);
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}
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static GBytes *
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_prop_get_ipv4_dhcp_vendor_class_identifier(NMDevice *self, NMSettingIP4Config *s_ip4)
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{
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@ -10970,8 +11016,11 @@ _dev_ipdhcpx_start(NMDevice *self, int addr_family)
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const char *hostname;
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gboolean hostname_is_fqdn;
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gboolean send_client_id;
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guint8 dscp;
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gboolean dscp_explicit = FALSE;
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client_id = _prop_get_ipv4_dhcp_client_id(self, connection, hwaddr, &send_client_id);
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dscp = _prop_get_ipv4_dhcp_dscp(self, &dscp_explicit);
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vendor_class_identifier =
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_prop_get_ipv4_dhcp_vendor_class_identifier(self, NM_SETTING_IP4_CONFIG(s_ip));
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@ -11010,6 +11059,8 @@ _dev_ipdhcpx_start(NMDevice *self, int addr_family)
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.request_broadcast = request_broadcast,
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.acd_timeout_msec = _prop_get_ipv4_dad_timeout(self),
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.send_client_id = send_client_id,
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.dscp = dscp,
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.dscp_explicit = dscp_explicit,
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},
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.previous_lease = priv->l3cds[L3_CONFIG_DATA_TYPE_DHCP_X(IS_IPv4)].d,
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};
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@ -158,6 +158,13 @@ typedef struct {
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* is disabled. */
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guint acd_timeout_msec;
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/* The DSCP value to use */
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guint8 dscp;
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/* Whether the DSCP value is explicitly set (or it is the default
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* one) */
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bool dscp_explicit : 1;
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/* Set BOOTP broadcast flag in request packets, so that servers
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* will always broadcast replies. */
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bool request_broadcast : 1;
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@ -457,6 +457,11 @@ dhclient_start(NMDhcpClient *client,
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g_ptr_array_add(argv, (gpointer) priv->conf_file);
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}
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if (client_config->v4.dscp_explicit) {
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_LOGW("dhclient does not support specifying a custom DSCP value; the TOS field will be set "
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"to LOWDELAY (0x10).");
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}
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/* Usually the system bus address is well-known; but if it's supposed
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* to be something else, we need to push it to dhclient, since dhclient
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* sanitizes the environment it gives the action scripts.
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@ -1388,6 +1388,8 @@ ip4_start(NMDhcpClient *client, GError **error)
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}
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}
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n_dhcp4_client_probe_config_set_dscp(config, client_config->v4.dscp);
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if (client_config->hostname) {
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if (client_config->use_fqdn) {
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uint8_t buffer[255];
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