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authorTom Gundersen <teg@jklm.no>2015-02-08 23:20:56 +0100
committerTom Gundersen <teg@jklm.no>2015-02-09 12:20:10 +0100
commit7f77697a1744f8df2089848b9d718faf7ba6c665 (patch)
tree294907c72f1008bfe7189e81ec27e8a4bae0131c /src/network
parentd0d6a4cd70477970812bff0a37e70f66208d7c14 (diff)
networkd: add support for IPv6 tokens
This allows the admin to set the host-specific part of IPv6 addresses, but still receive the prefix via SLAAC. .network file snippet: [Network] IPv6Token=::12 gives: $ ip token token ::12 dev eth0 This closes https://bugs.freedesktop.org/show_bug.cgi?id=81177.
Diffstat (limited to 'src/network')
-rw-r--r--src/network/networkd-link.c44
-rw-r--r--src/network/networkd-network-gperf.gperf1
-rw-r--r--src/network/networkd-network.c45
-rw-r--r--src/network/networkd.h6
4 files changed, 77 insertions, 19 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 3b9881d71e..1f96c634ef 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1097,36 +1097,44 @@ static int link_up(Link *link) {
}
}
- if (!link_ipv6ll_enabled(link)) {
- r = sd_rtnl_message_open_container(req, IFLA_AF_SPEC);
- if (r < 0) {
- log_link_error(link, "Could not open IFLA_AF_SPEC container: %s", strerror(-r));
- return r;
- }
+ r = sd_rtnl_message_open_container(req, IFLA_AF_SPEC);
+ if (r < 0) {
+ log_link_error(link, "Could not open IFLA_AF_SPEC container: %s", strerror(-r));
+ return r;
+ }
- r = sd_rtnl_message_open_container(req, AF_INET6);
- if (r < 0) {
- log_link_error(link, "Could not open AF_INET6 container: %s", strerror(-r));
- return r;
- }
+ r = sd_rtnl_message_open_container(req, AF_INET6);
+ if (r < 0) {
+ log_link_error(link, "Could not open AF_INET6 container: %s", strerror(-r));
+ return r;
+ }
+ if (!link_ipv6ll_enabled(link)) {
r = sd_rtnl_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, IN6_ADDR_GEN_MODE_NONE);
if (r < 0) {
log_link_error(link, "Could not append IFLA_INET6_ADDR_GEN_MODE: %s", strerror(-r));
return r;
}
+ }
- r = sd_rtnl_message_close_container(req);
+ if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) {
+ r = sd_rtnl_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6);
if (r < 0) {
- log_link_error(link, "Could not close AF_INET6 contaire: %s", strerror(-r));
+ log_link_error(link, "Could not append IFLA_INET6_TOKEN: %s", strerror(-r));
return r;
}
+ }
- r = sd_rtnl_message_close_container(req);
- if (r < 0) {
- log_link_error(link, "Could not close IFLA_AF_SPEC contaire: %s", strerror(-r));
- return r;
- }
+ r = sd_rtnl_message_close_container(req);
+ if (r < 0) {
+ log_link_error(link, "Could not close AF_INET6 container: %s", strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(req);
+ if (r < 0) {
+ log_link_error(link, "Could not close IFLA_AF_SPEC contaire: %s", strerror(-r));
+ return r;
}
r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link,
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index 525f2ba799..6f295488bd 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -38,6 +38,7 @@ Network.DHCP, config_parse_dhcp, 0,
Network.DHCPServer, config_parse_bool, 0, offsetof(Network, dhcp_server)
Network.LinkLocal, config_parse_address_family_boolean,0, offsetof(Network, link_local)
Network.IPv4LLRoute, config_parse_bool, 0, offsetof(Network, ipv4ll_route)
+Network.IPv6Token, config_parse_token, 0, offsetof(Network, ipv6_token)
Network.LLDP, config_parse_bool, 0, offsetof(Network, lldp)
Network.Address, config_parse_address, 0, 0
Network.Gateway, config_parse_gateway, 0, 0
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index c39ba6dfa2..9ebc2d15aa 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -626,7 +626,7 @@ int config_parse_llmnr(
assert(filename);
assert(lvalue);
assert(rvalue);
- assert(data);
+ assert(llmnr);
/* Our enum shall be a superset of booleans, hence first try
* to parse as boolean, and then as enum */
@@ -650,3 +650,46 @@ int config_parse_llmnr(
return 0;
}
+
+int config_parse_token(
+ 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) {
+
+ union in_addr_union buffer;
+ struct in6_addr *token = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(token);
+
+ r = in_addr_from_string(AF_INET6, rvalue, &buffer);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse IPv6 token, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ r = in_addr_is_null(AF_INET6, &buffer);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, -r, "IPv6 token canno t be the ANY address, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if ((buffer.in6.s6_addr32[0] | buffer.in6.s6_addr32[1]) != 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL, "IPv6 token canno t be longer than 64 bits, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ *token = buffer.in6;
+
+ return 0;
+}
diff --git a/src/network/networkd.h b/src/network/networkd.h
index 4f3bcf36f9..6fb920b158 100644
--- a/src/network/networkd.h
+++ b/src/network/networkd.h
@@ -128,6 +128,7 @@ struct Network {
unsigned dhcp_route_metric;
AddressFamilyBoolean link_local;
bool ipv4ll_route;
+ union in_addr_union ipv6_token;
bool dhcp_server;
@@ -405,6 +406,11 @@ int config_parse_ipv4ll(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);
+/* IPv6 support */
+int config_parse_token(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);
+
/* LLMNR support */
const char* llmnr_support_to_string(LLMNRSupport i) _const_;