system/systemd
system/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd synced 2024-09-06 16:56:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

networkd: add support for tunnel encap limit

Browse source 
The Tunnel Encapsulation Limit option specifies how many additional
levels of encapsulation are permitted to be prepended to the packet
This commit is contained in:
Susant Sahani 2015-08-31 13:21:44 +05:30
parent 933f08ad7f
commit b48288868a
3 changed files with 52 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

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

@ -39,6 +39,7 @@ Tunnel.DiscoverPathMTU, config_parse_bool, 0,
Tunnel.Mode, config_parse_ip6tnl_mode, 0, offsetof(Tunnel, ip6tnl_mode)
Tunnel.IPv6FlowLabel, config_parse_ipv6_flowlabel, 0, offsetof(Tunnel, ipv6_flowlabel)
Tunnel.CopyDSCP, config_parse_bool, 0, offsetof(Tunnel, copy_dscp)
Tunnel.EncapsulationLimit, config_parse_encap_limit, 0, offsetof(Tunnel, encap_limit)
Peer.Name, config_parse_ifname, 0, offsetof(Veth, ifname_peer)
Peer.MACAddress, config_parse_hwaddr, 0, offsetof(Veth, mac_peer)
VXLAN.Id, config_parse_uint64, 0, offsetof(VxLan, id)

45
src/network/networkd-netdev-tunnel.c
View file

@ -284,6 +284,12 @@ 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->encap_limit != IPV6_DEFAULT_TNL_ENCAP_LIMIT) {
r = sd_netlink_message_append_u8(m, IFLA_IPTUN_ENCAP_LIMIT, t->encap_limit);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_ENCAP_LIMIT attribute: %m");
}
r = sd_netlink_message_append_u32(m, IFLA_IPTUN_FLAGS, t->flags);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_FLAGS attribute: %m");
@ -442,6 +448,45 @@ int config_parse_ipv6_flowlabel(const char* unit,
return 0;
}
int config_parse_encap_limit(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) {
Tunnel *t = userdata;
int k = 0;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (streq(rvalue, "none"))
t->flags |= IP6_TNL_F_IGN_ENCAP_LIMIT;
else {
r = safe_atoi(rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse Tunnel Encapsulation Limit option, ignoring: %s", rvalue);
return 0;
}
if (k > 255 || k < 0)
log_syntax(unit, LOG_ERR, filename, line, k, "Invalid Tunnel Encapsulation value, ignoring: %d", k);
else {
t->encap_limit = k;
t->flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT;
}
}
return 0;
}
static void ipip_init(NetDev *n) {
Tunnel *t = IPIP(n);

6
src/network/networkd-netdev-tunnel.h
View file

@ -95,3 +95,9 @@ int config_parse_ipv6_flowlabel(const char *unit, const char *filename,
unsigned section_line, const char *lvalue,
int ltype, const char *rvalue, void *data,
void *userdata);
int config_parse_encap_limit(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);