return false;
}
+static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(link);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Could not set address genmode for interface: %m");
+
+ return 1;
+}
+
+static int link_configure_addrgen_mode(Link *link) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ uint8_t ipv6ll_mode;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ log_link_debug(link, "Setting address genmode for link");
+
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
+
+ r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
+
+ r = sd_netlink_message_open_container(req, AF_INET6);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m");
+
+ if (!link_ipv6ll_enabled(link))
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE;
+ else {
+ const char *p = NULL;
+ _cleanup_free_ char *stable_secret = NULL;
+
+ p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/stable_secret");
+
+ /* The file may not exist. And event if it exists, when stable_secret is unset,
+ * then reading the file fails and EIO is returned. */
+ r = read_one_line_file(p, &stable_secret);
+ if (r < 0)
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64;
+ else
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
+ }
+
+ r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m");
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m");
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m");
+
+ r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler,
+ link_netlink_destroy_callback, link);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
int r;
static int link_up(Link *link) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
- uint8_t ipv6ll_mode;
int r;
assert(link);
return log_link_error_errno(link, r, "Could not set MAC address: %m");
}
- r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
- if (r < 0)
- return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
-
if (link_ipv6_enabled(link)) {
+ r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
+
/* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */
r = sd_netlink_message_open_container(req, AF_INET6);
if (r < 0)
return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m");
- if (!link_ipv6ll_enabled(link))
- ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE;
- else {
- const char *p = NULL;
- _cleanup_free_ char *stable_secret = NULL;
-
- p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/stable_secret");
- r = read_one_line_file(p, &stable_secret);
-
- if (r < 0)
- ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64;
- else
- ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
- }
- r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode);
- if (r < 0)
- return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m");
-
if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) {
r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6);
if (r < 0)
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m");
- }
- r = sd_netlink_message_close_container(req);
- if (r < 0)
- return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m");
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m");
+ }
r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler,
link_netlink_destroy_callback, link);
return r;
}
+ if (socket_ipv6_is_supported()) {
+ r = link_configure_addrgen_mode(link);
+ if (r < 0)
+ return r;
+ }
+
return link_configure_after_setting_mtu(link);
}