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networkd: Tunnel allows tunnel traffic on ip6tnl devices (#7756)

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where the remote endpoint is a local host address.
This commit is contained in:
Susant Sahani 2017-12-29 19:49:21 +05:30 committed by Yu Watanabe
parent 323d9329e7
commit 3a4f3e423d
4 changed files with 15 additions and 0 deletions
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8
man/systemd.netdev.xml
View file

@ -889,6 +889,14 @@
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>AllowLocalRemote=</varname></term>
<listitem>
<para>A boolean. When true allows tunnel traffic on <varname>ip6tnl</varname> devices where the remote endpoint is a local host address.
Defaults to unset.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>

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

@ -63,6 +63,7 @@ Tunnel.IPv6FlowLabel, config_parse_ipv6_flowlabel, 0,
Tunnel.CopyDSCP, config_parse_bool, 0, offsetof(Tunnel, copy_dscp)
Tunnel.EncapsulationLimit, config_parse_encap_limit, 0, offsetof(Tunnel, encap_limit)
Tunnel.Independent, config_parse_bool, 0, offsetof(Tunnel, independent)
Tunnel.AllowLocalRemote, config_parse_tristate, 0, offsetof(Tunnel, allow_localremote)
Peer.Name, config_parse_ifname, 0, offsetof(Veth, ifname_peer)
Peer.MACAddress, config_parse_hwaddr, 0, offsetof(Veth, mac_peer)
VXCAN.Peer, config_parse_ifname, 0, offsetof(VxCan, ifname_peer)

5
src/network/netdev/tunnel.c
View file

@ -37,6 +37,7 @@
#define DEFAULT_TNL_HOP_LIMIT 64
#define IP6_FLOWINFO_FLOWLABEL htobe32(0x000FFFFF)
#define IP6_TNL_F_ALLOW_LOCAL_REMOTE 0x40
static const char* const ip6tnl_mode_table[_NETDEV_IP6_TNL_MODE_MAX] = {
[NETDEV_IP6_TNL_MODE_IP6IP6] = "ip6ip6",
@ -336,6 +337,9 @@ static int netdev_ip6tnl_fill_message_create(NetDev *netdev, Link *link, sd_netl
if (t->copy_dscp)
t->flags |= IP6_TNL_F_RCV_DSCP_COPY;
if (t->allow_localremote != -1)
SET_FLAG(t->flags, IP6_TNL_F_ALLOW_LOCAL_REMOTE, t->allow_localremote);
if (t->encap_limit != IPV6_DEFAULT_TNL_ENCAP_LIMIT) {
r = sd_netlink_message_append_u8(m, IFLA_IPTUN_ENCAP_LIMIT, t->encap_limit);
if (r < 0)
@ -682,6 +686,7 @@ static void ip6tnl_init(NetDev *n) {
t->encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT;
t->ip6tnl_mode = _NETDEV_IP6_TNL_MODE_INVALID;
t->ipv6_flowlabel = _NETDEV_IPV6_FLOWLABEL_INVALID;
t->allow_localremote = -1;
}
const NetDevVTable ipip_vtable = {

1
src/network/netdev/tunnel.h
View file

@ -45,6 +45,7 @@ typedef struct Tunnel {
int family;
int ipv6_flowlabel;
int allow_localremote;
unsigned ttl;
unsigned tos;