int address_update(Address *address, Link *link,
sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(address);
assert(address->family == AF_INET || address->family == AF_INET6);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req,
link->ifindex, address->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set prefixlen: %m");
r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT);
if (r < 0)
return log_error_errno(r, "Could not set flags: %m");
r = sd_rtnl_message_addr_set_scope(req, address->scope);
if (r < 0)
return log_error_errno(r, "Could not set scope: %m");
if (address->family == AF_INET)
r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
else if (address->family == AF_INET6)
r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
if (address->family == AF_INET) {
r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
if (r < 0)
return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m");
}
if (address->label) {
r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
if (r < 0)
return log_error_errno(r, "Could not append IFA_LABEL attribute: %m");
}
r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo);
if (r < 0)
return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m");
r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int br_vlan_configure(Link *link, uint16_t pvid, uint32_t *br_vid_bitmap, uint32_t *br_untagged_bitmap) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
uint16_t flags;
sd_netlink *rtnl;
assert(link);
assert(link->manager);
assert(br_vid_bitmap);
assert(br_untagged_bitmap);
assert(link->network);
/* pvid might not be in br_vid_bitmap yet */
if (pvid)
set_bit(pvid, br_vid_bitmap);
rtnl = link->manager->rtnl;
/* create new RTM message */
r = sd_rtnl_message_new_link(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_rtnl_message_link_set_family(req, PF_BRIDGE);
if (r < 0)
return log_link_error_errno(link, r, "Could not set message family: %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");
/* master needs flag self */
if (!link->network->bridge) {
flags = BRIDGE_FLAGS_SELF;
sd_netlink_message_append_data(req, IFLA_BRIDGE_FLAGS, &flags, sizeof(uint16_t));
}
/* add vlan info */
r = append_vlan_info_data(link, req, pvid, br_vid_bitmap, br_untagged_bitmap);
if (r < 0)
return log_link_error_errno(link, r, "Could not append VLANs: %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");
/* send message to the kernel */
r = netlink_call_async(rtnl, NULL, req, set_brvlan_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;
}
/* send a request to the kernel to add a FDB entry in its static MAC table. */
int fdb_entry_configure(Link *link, FdbEntry *fdb_entry) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
sd_netlink *rtnl;
int r;
uint8_t flags;
Bridge *bridge;
assert(link);
assert(link->network);
assert(link->manager);
assert(fdb_entry);
rtnl = link->manager->rtnl;
bridge = BRIDGE(link->network->bridge);
/* create new RTM message */
r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_NEWNEIGH, link->ifindex, PF_BRIDGE);
if (r < 0)
return rtnl_log_create_error(r);
if (bridge)
flags = NTF_MASTER;
else
flags = NTF_SELF;
r = sd_rtnl_message_neigh_set_flags(req, flags);
if (r < 0)
return rtnl_log_create_error(r);
/* only NUD_PERMANENT state supported. */
r = sd_rtnl_message_neigh_set_state(req, NUD_NOARP | NUD_PERMANENT);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_message_append_ether_addr(req, NDA_LLADDR, fdb_entry->mac_addr);
if (r < 0)
return rtnl_log_create_error(r);
/* VLAN Id is optional. We'll add VLAN Id only if it's specified. */
if (0 != fdb_entry->vlan_id) {
r = sd_netlink_message_append_u16(req, NDA_VLAN, fdb_entry->vlan_id);
if (r < 0)
return rtnl_log_create_error(r);
}
/* send message to the kernel to update its internal static MAC table. */
r = sd_netlink_call_async(rtnl, NULL, req, set_fdb_handler,
link_netlink_destroy_callback, link, 0, __func__);
if (r < 0)
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int routing_policy_rule_remove(RoutingPolicyRule *routing_policy_rule, Link *link, sd_netlink_message_handler_t callback) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(routing_policy_rule);
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
assert(link->ifindex > 0);
assert(IN_SET(routing_policy_rule->family, AF_INET, AF_INET6));
r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_DELRULE, routing_policy_rule->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_DELRULE message: %m");
if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->from)) {
if (routing_policy_rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_SRC, &routing_policy_rule->from.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &routing_policy_rule->from.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_SRC attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, routing_policy_rule->from_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(routing_policy_rule->family, &routing_policy_rule->to)) {
if (routing_policy_rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_DST, &routing_policy_rule->to.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_DST, &routing_policy_rule->to.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_DST attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, routing_policy_rule->to_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int address_label_configure(
AddressLabel *label,
Link *link,
sd_netlink_message_handler_t callback,
bool update) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(label);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL,
link->ifindex, AF_INET6);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set prefixlen: %m");
r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label);
if (r < 0)
return log_error_errno(r, "Could not append IFAL_LABEL attribute: %m");
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m");
r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int address_drop(Address *address, Link *link,
sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(address);
assert(address->family == AF_INET || address->family == AF_INET6);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
address_release(address, link);
r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR,
link->ifindex, address->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m");
r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set prefixlen: %m");
if (address->family == AF_INET)
r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
else if (address->family == AF_INET6)
r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int netdev_create_vxlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
int r;
assert(netdev);
assert(!(netdev->kind == NETDEV_KIND_VXLAN) || (link && callback));
assert(netdev->ifname);
assert(netdev->manager);
assert(netdev->manager->rtnl);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
if (r < 0) {
log_error_netdev(netdev,
"Could not allocate RTM_NEWLINK message: %s",
strerror(-r));
return r;
}
r = netdev_fill_vxlan_rtnl_message(netdev, link, m);
if(r < 0)
return r;
r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, link, 0, NULL);
if (r < 0) {
log_error_netdev(netdev,
"Could not send rtnetlink message: %s", strerror(-r));
return r;
}
link_ref(link);
log_debug_netdev(netdev, "Creating vxlan netdev: %s",
netdev_kind_to_string(netdev->kind));
netdev->state = NETDEV_STATE_CREATING;
return 0;
}
int route_drop(Route *route, Link *link,
sd_netlink_message_handler_t callback) {
_cleanup_netlink_message_unref_ sd_netlink_message *req = NULL;
int r;
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
assert(link->ifindex > 0);
assert(route->family == AF_INET || route->family == AF_INET6);
r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
RTM_DELROUTE, route->family,
route->protocol);
if (r < 0)
return log_error_errno(r, "Could not create RTM_DELROUTE message: %m");
if (!in_addr_is_null(route->family, &route->in_addr)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
}
if (route->dst_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst_addr.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_DST attribute: %m");
r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
if (route->src_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src_addr.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_DST attribute: %m");
r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(route->family, &route->prefsrc_addr)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m");
}
r = sd_rtnl_message_route_set_scope(req, route->scope);
if (r < 0)
return log_error_errno(r, "Could not set scope: %m");
r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->metrics);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m");
r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex);
if (r < 0)
return log_error_errno(r, "Could not append RTA_OIF attribute: %m");
r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, sd_netlink_message_handler_t callback, bool update) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(rule);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m");
if (!in_addr_is_null(rule->family, &rule->from)) {
if (rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_SRC, &rule->from.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &rule->from.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_SRC attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(rule->family, &rule->to)) {
if (rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_DST, &rule->to.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_DST, &rule->to.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_DST attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority);
if (r < 0)
return log_error_errno(r, "Could not append FRA_PRIORITY attribute: %m");
if (rule->tos > 0) {
r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos);
if (r < 0)
return log_error_errno(r, "Could not set ip rule tos: %m");
}
if (rule->table < 256) {
r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table);
if (r < 0)
return log_error_errno(r, "Could not set ip rule table: %m");
} else {
r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC);
if (r < 0)
return log_error_errno(r, "Could not set ip rule table: %m");
r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table);
if (r < 0)
return log_error_errno(r, "Could not append FRA_TABLE attribute: %m");
}
if (rule->fwmark > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark);
if (r < 0)
return log_error_errno(r, "Could not append FRA_FWMARK attribute: %m");
}
if (rule->fwmask > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask);
if (r < 0)
return log_error_errno(r, "Could not append FRA_FWMASK attribute: %m");
}
if (rule->iif) {
r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif);
if (r < 0)
return log_error_errno(r, "Could not append FRA_IFNAME attribute: %m");
}
if (rule->oif) {
r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif);
if (r < 0)
return log_error_errno(r, "Could not append FRA_OIFNAME attribute: %m");
}
rule->link = link;
r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
r = routing_policy_rule_add(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to,
rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, NULL);
if (r < 0)
return log_error_errno(r, "Could not add rule : %m");
return 0;
}
int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
const char *kind;
int r;
assert(netdev);
assert(netdev->kind == NETDEV_KIND_VLAN);
assert(link);
assert(callback);
assert(netdev->ifname);
assert(netdev->manager);
assert(netdev->manager->rtnl);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, 0);
if (r < 0) {
log_error_netdev(netdev,
"Could not allocate RTM_NEWLINK message: %s",
strerror(-r));
return r;
}
if (link) {
r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINK attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->ifname);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IFNAME attribute: %s",
strerror(-r));
return r;
}
if (netdev->mtu) {
r = sd_rtnl_message_append_u32(req, IFLA_MTU, netdev->mtu);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_MTU attribute: %s",
strerror(-r));
return r;
}
}
if (netdev->mac) {
r = sd_rtnl_message_append_ether_addr(req, IFLA_ADDRESS, netdev->mac);
if (r < 0) {
log_error_netdev(netdev,
"Colud not append IFLA_ADDRESS attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
if (r < 0) {
log_error_netdev(netdev,
"Could not open IFLA_LINKINFO container: %s",
strerror(-r));
return r;
}
kind = netdev_kind_to_string(netdev->kind);
if (!kind) {
log_error_netdev(netdev, "Invalid kind");
return -EINVAL;
}
r = sd_rtnl_message_open_container_union(req, IFLA_INFO_DATA, kind);
if (r < 0) {
log_error_netdev(netdev,
"Could not open IFLA_INFO_DATA container: %s",
strerror(-r));
return r;
}
if (netdev->vlanid <= VLANID_MAX) {
r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_VLAN_ID attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_close_container(req);
if (r < 0) {
log_error_netdev(netdev,
"Could not close IFLA_INFO_DATA container %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_close_container(req);
if (r < 0) {
log_error_netdev(netdev,
"Could not close IFLA_LINKINFO container %s",
strerror(-r));
return r;
}
r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0) {
log_error_netdev(netdev,
"Could not send rtnetlink message: %s", strerror(-r));
return r;
}
link_ref(link);
log_debug_netdev(netdev, "creating netdev");
netdev->state = NETDEV_STATE_CREATING;
return 0;
}
int route_configure(
Route *route,
Link *link,
sd_netlink_message_handler_t callback) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
_cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL;
usec_t lifetime;
int r;
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
assert(link->ifindex > 0);
assert(route->family == AF_INET || route->family == AF_INET6);
if (route_get(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL) <= 0 &&
set_size(link->routes) >= ROUTES_PER_LINK_MAX)
return -E2BIG;
r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
RTM_NEWROUTE, route->family,
route->protocol);
if (r < 0)
return log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
if (!in_addr_is_null(route->family, &route->gw)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->gw.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->gw.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
r = sd_rtnl_message_route_set_family(req, route->family);
if (r < 0)
return log_error_errno(r, "Could not set route family: %m");
}
if (route->dst_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_DST attribute: %m");
r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
if (route->src_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_SRC attribute: %m");
r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(route->family, &route->prefsrc)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m");
}
r = sd_rtnl_message_route_set_scope(req, route->scope);
if (r < 0)
return log_error_errno(r, "Could not set scope: %m");
r = sd_rtnl_message_route_set_flags(req, route->flags);
if (r < 0)
return log_error_errno(r, "Could not set flags: %m");
if (route->table != RT_TABLE_DEFAULT) {
if (route->table < 256) {
r = sd_rtnl_message_route_set_table(req, route->table);
if (r < 0)
return log_error_errno(r, "Could not set route table: %m");
} else {
r = sd_rtnl_message_route_set_table(req, RT_TABLE_UNSPEC);
if (r < 0)
return log_error_errno(r, "Could not set route table: %m");
/* Table attribute to allow more than 256. */
r = sd_netlink_message_append_data(req, RTA_TABLE, &route->table, sizeof(route->table));
if (r < 0)
return log_error_errno(r, "Could not append RTA_TABLE attribute: %m");
}
}
r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m");
r = sd_netlink_message_append_u8(req, RTA_PREF, route->pref);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PREF attribute: %m");
r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex);
if (r < 0)
return log_error_errno(r, "Could not append RTA_OIF attribute: %m");
r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
lifetime = route->lifetime;
r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, &route);
if (r < 0)
return log_error_errno(r, "Could not add route: %m");
/* TODO: drop expiration handling once it can be pushed into the kernel */
route->lifetime = lifetime;
if (route->lifetime != USEC_INFINITY) {
r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(),
route->lifetime, 0, route_expire_handler, route);
if (r < 0)
return log_error_errno(r, "Could not arm expiration timer: %m");
}
sd_event_source_unref(route->expire);
route->expire = expire;
expire = NULL;
return 0;
}
int route_remove(Route *route, Link *link,
sd_netlink_message_handler_t callback) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
assert(link->ifindex > 0);
assert(IN_SET(route->family, AF_INET, AF_INET6));
r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
RTM_DELROUTE, route->family,
route->protocol);
if (r < 0)
return log_error_errno(r, "Could not create RTM_DELROUTE message: %m");
if (!in_addr_is_null(route->family, &route->gw)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &route->gw.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_GATEWAY, &route->gw.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
}
if (route->dst_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_DST, &route->dst.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_DST, &route->dst.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_DST attribute: %m");
r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
if (route->src_prefixlen) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_SRC, &route->src.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_SRC, &route->src.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_SRC attribute: %m");
r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(route->family, &route->prefsrc)) {
if (route->family == AF_INET)
r = sd_netlink_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc.in);
else if (route->family == AF_INET6)
r = sd_netlink_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc.in6);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m");
}
r = sd_rtnl_message_route_set_scope(req, route->scope);
if (r < 0)
return log_error_errno(r, "Could not set scope: %m");
r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority);
if (r < 0)
return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m");
if (!IN_SET(route->type, RTN_UNREACHABLE, RTN_PROHIBIT, RTN_BLACKHOLE)) {
r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex);
if (r < 0)
return log_error_errno(r, "Could not append RTA_OIF attribute: %m");
}
r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int netdev_create_tunnel(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
int r;
assert(netdev);
assert(netdev->ifname);
assert(netdev->manager);
assert(netdev->manager->rtnl);
assert(link);
assert(link->network);
assert(link->network->tunnel == netdev);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
if (r < 0) {
log_error_netdev(netdev,
"Could not allocate RTM_NEWLINK message: %s",
strerror(-r));
return r;
}
switch(netdev->kind) {
case NETDEV_KIND_IPIP:
r = netdev_fill_ipip_rtnl_message(link, m);
if(r < 0)
return r;
break;
case NETDEV_KIND_SIT:
r = netdev_fill_sit_rtnl_message(link, m);
if(r < 0)
return r;
break;
case NETDEV_KIND_VTI:
netdev_fill_vti_rtnl_message(link, m);
if(r < 0)
return r;
break;
case NETDEV_KIND_GRE:
r = netdev_fill_ipgre_rtnl_message(link, m);
if(r < 0)
return r;
break;
default:
return -ENOTSUP;
}
r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, link, 0, NULL);
if (r < 0) {
log_error_netdev(netdev,
"Could not send rtnetlink message: %s", strerror(-r));
return r;
}
link_ref(link);
log_debug_netdev(netdev, "Creating tunnel netdev: %s",
netdev_kind_to_string(netdev->kind));
netdev->state = NETDEV_STATE_CREATING;
return 0;
}
