<varlistentry>
<term><varname>TTL=</varname></term>
<listitem>
- <para>A fixed Time To Live N on Virtual eXtensible Local
- Area Network packets. N is a number in the range 1–255. 0
- is a special value meaning that packets inherit the TTL
- value.</para>
+ <para>A fixed Time To Live N on Virtual eXtensible Local Area Network packets.
+ Takes <literal>inherit</literal> or a number in the range 0–255. 0 is a special
+ value meaning inherit the inner protocol's TTL value. <literal>inherit</literal>
+ means that it will inherit the outer protocol's TTL value.</para>
</listitem>
</varlistentry>
<varlistentry>
VXLAN.Local, config_parse_vxlan_address, 0, offsetof(VxLan, local)
VXLAN.Remote, config_parse_vxlan_address, 0, offsetof(VxLan, remote)
VXLAN.TOS, config_parse_unsigned, 0, offsetof(VxLan, tos)
-VXLAN.TTL, config_parse_unsigned, 0, offsetof(VxLan, ttl)
+VXLAN.TTL, config_parse_vxlan_ttl, 0, offsetof(VxLan, ttl)
VXLAN.MacLearning, config_parse_bool, 0, offsetof(VxLan, learning)
VXLAN.ARPProxy, config_parse_bool, 0, offsetof(VxLan, arp_proxy)
VXLAN.ReduceARPProxy, config_parse_bool, 0, offsetof(VxLan, arp_proxy)
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LINK attribute: %m");
- if (v->ttl != 0) {
+ if (v->inherit) {
+ r = sd_netlink_message_append_flag(m, IFLA_VXLAN_TTL_INHERIT);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TTL_INHERIT attribute: %m");
+ } else {
r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TTL attribute: %m");
return 0;
}
+int config_parse_vxlan_ttl(const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+ VxLan *v = userdata;
+ unsigned f;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (streq(rvalue, "inherit"))
+ v->inherit = true;
+ else {
+ r = safe_atou(rvalue, &f);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse VXLAN TTL '%s', ignoring assignment: %m", rvalue);
+ return 0;
+ }
+
+ if (f > 255) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Invalid VXLAN TTL '%s'. TTL must be <= 255. Ignoring assignment.", rvalue);
+ return 0;
+ }
+
+ v->ttl = f;
+ }
+
+ return 0;
+}
+
static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
VxLan *v = VXLAN(netdev);
bool remote_csum_rx;
bool group_policy;
bool generic_protocol_extension;
+ bool inherit;
struct ifla_vxlan_port_range port_range;
};
CONFIG_PARSER_PROTOTYPE(config_parse_port_range);
CONFIG_PARSER_PROTOTYPE(config_parse_flow_label);
CONFIG_PARSER_PROTOTYPE(config_parse_df);
+CONFIG_PARSER_PROTOTYPE(config_parse_vxlan_ttl);