static void test_link_configure(sd_rtnl *rtnl, int ifindex) { _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; const char *mac = "98:fe:94:3f:c6:18", *name = "test"; char buffer[ETHER_ADDR_TO_STRING_MAX]; unsigned int mtu = 1450, mtu_out; const char *name_out; struct ether_addr mac_out; /* we'd really like to test NEWLINK, but let's not mess with the running kernel */ assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0); assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0); assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0); assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0); assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1); assert_se(sd_rtnl_message_rewind(message) >= 0); assert_se(sd_rtnl_message_read_string(message, IFLA_IFNAME, &name_out) >= 0); assert_se(streq(name, name_out)); assert_se(sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0); assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer))); assert_se(sd_rtnl_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0); assert_se(mtu == mtu_out); }
static void test_link_configure(sd_rtnl *rtnl, int ifindex) { _cleanup_rtnl_message_unref_ sd_rtnl_message *message; uint16_t type; const char *mac = "98:fe:94:3f:c6:18", *name = "test"; unsigned int mtu = 1450; void *data; /* we'd really like to test NEWLINK, but let's not mess with the running kernel */ assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0); assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0); assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0); assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0); assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1); assert_se(sd_rtnl_message_read(message, &type, &data) > 0); assert_se(type == IFLA_IFNAME); assert_se(streq(name, (char *) data)); assert_se(sd_rtnl_message_read(message, &type, &data) > 0); assert_se(type == IFLA_ADDRESS); assert_se(streq(mac, ether_ntoa(data))); assert_se(sd_rtnl_message_read(message, &type, &data) > 0); assert_se(type == IFLA_MTU); assert_se(mtu == *(unsigned int *) data); }
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; }
int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const char *alias, const struct ether_addr *mac, unsigned mtu) { _cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL; bool need_update = false; int r; assert(rtnl); assert(ifindex > 0); if (!alias && !mac && mtu == 0) return 0; r = sd_rtnl_message_new_link(rtnl, &message, RTM_SETLINK, ifindex); if (r < 0) return r; if (alias) { r = sd_rtnl_message_append_string(message, IFLA_IFALIAS, alias); if (r < 0) return r; need_update = true; } if (mac) { r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac); if (r < 0) return r; need_update = true; } if (mtu > 0) { r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu); if (r < 0) return r; need_update = true; } if (need_update) { r = sd_rtnl_call(rtnl, message, 0, NULL); if (r < 0) return r; } return 0; }
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_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_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; }