static int netdev_fill_dummy_rtnl_message(NetDev *netdev, sd_rtnl_message *m) { int r; assert(netdev); assert(m); r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_IFNAME, attribute: %s", strerror(-r)); return r; } if (netdev->mac) { r = sd_rtnl_message_append_ether_addr(m, 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(m, IFLA_LINKINFO); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_close_container(m); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } return r; }
static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) { Veth *v = VETH(netdev); int r; assert(netdev); assert(!link); assert(v); assert(m); r = sd_rtnl_message_open_container(m, VETH_INFO_PEER); if (r < 0) { log_error_netdev(netdev, "Could not append VETH_INFO_PEER attribute: %s", strerror(-r)); return r; } if (v->ifname_peer) { r = sd_rtnl_message_append_string(m, IFLA_IFNAME, v->ifname_peer); if (r < 0) { log_error("Failed to add netlink interface name: %s", strerror(-r)); return r; } } if (v->mac_peer) { r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_ADDRESS attribute: %s", strerror(-r)); return r; } } r = sd_rtnl_message_close_container(m); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } return r; }
int netdev_create_veth(NetDev *netdev, 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); 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; } if(netdev->kind != NETDEV_KIND_VETH) return -ENOTSUP; r = netdev_fill_veth_rtnl_message(netdev, m); if(r < 0) return r; r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, netdev, 0, NULL); if (r < 0) { log_error_netdev(netdev, "Could not send rtnetlink message: %s", strerror(-r)); return r; } netdev_ref(netdev); log_debug_netdev(netdev, "Creating veth netdev: %s", netdev_kind_to_string(netdev->kind)); netdev->state = NETDEV_STATE_CREATING; 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; }
static int netdev_tuntap_add(NetDev *netdev, struct ifreq *ifr) { _cleanup_close_ int fd; const char *user; const char *group; uid_t uid; gid_t gid; int r = 0; fd = open(TUN_DEV, O_RDWR); if (fd < 0) { log_error_netdev(netdev, "Failed to open tun dev: %s", strerror(-r)); return r; } r = ioctl(fd, TUNSETIFF, ifr); if (r < 0) { log_error_netdev(netdev, "TUNSETIFF failed on tun dev: %s", strerror(-r)); return r; } if(netdev->user_name) { user = netdev->user_name; r = get_user_creds(&user, &uid, NULL, NULL, NULL); if (r < 0) { log_error("Cannot resolve user name %s: %s", netdev->user_name, strerror(-r)); return 0; } r = ioctl(fd, TUNSETOWNER, uid); if ( r < 0) { log_error_netdev(netdev, "TUNSETOWNER failed on tun dev: %s", strerror(-r)); } } if(netdev->group_name) { group = netdev->group_name; r = get_group_creds(&group, &gid); if (r < 0) { log_error("Cannot resolve group name %s: %s", netdev->group_name, strerror(-r)); return 0; } r = ioctl(fd, TUNSETGROUP, gid); if( r < 0) { log_error_netdev(netdev, "TUNSETGROUP failed on tun dev: %s", strerror(-r)); return r; } } r = ioctl(fd, TUNSETPERSIST, 1); if (r < 0) { log_error_netdev(netdev, "TUNSETPERSIST failed on tun dev: %s", strerror(-r)); return r; } return r; }
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; }
static int netdev_fill_vxlan_rtnl_message(NetDev *netdev, Link *link, sd_rtnl_message *m) { int r; assert(link); assert(link->network); assert(m); r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_IFNAME, attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_open_container(m, IFLA_LINKINFO); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } if (netdev->vlanid <= VXLAN_VID_MAX) { r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_ID, netdev->vxlanid); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_ID attribute: %s", strerror(-r)); return r; } } r = sd_rtnl_message_append_in_addr(m, IFLA_VXLAN_GROUP, &netdev->group.in); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_GROUP attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_LINK attribute: %s", strerror(-r)); return r; } if(netdev->ttl) { r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TTL, netdev->ttl); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_TTL attribute: %s", strerror(-r)); return r; } } if(netdev->tos) { r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TOS, netdev->tos); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_TOS attribute: %s", strerror(-r)); return r; } } r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_LEARNING, netdev->learning); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_VXLAN_LEARNING attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_close_container(m); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } return r; }
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; }
static int netdev_fill_vti_rtnl_message(Link *link, sd_rtnl_message *m) { NetDev *netdev; int r; assert(link); assert(link->network); assert(link->network->tunnel); assert(m); netdev = link->network->tunnel; assert(netdev->family == AF_INET); r = sd_rtnl_message_append_string(m, 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(m, 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(m, 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(m, IFLA_LINKINFO); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_append_u32(m, IFLA_VTI_LINK, link->ifindex); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_IPTUN_LINK attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_LOCAL, &netdev->local.in); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_IPTUN_LOCAL attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_REMOTE, &netdev->remote.in); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_IPTUN_REMOTE attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_close_container(m); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } r = sd_rtnl_message_close_container(m); if (r < 0) { log_error_netdev(netdev, "Could not append IFLA_LINKINFO attribute: %s", strerror(-r)); return r; } return r; }