#include <net/if.h>

#include <netinet/in.h>

#include <linux/if_arp.h>

#include <unistd.h>

#include "alloc-util.h"

#include "arphrd-util.h"

#include "bareudp.h"

#include "batadv.h"

#include "bond.h"

#include "bridge.h"

#include "conf-files.h"

#include "conf-parser.h"

#include "dummy.h"

#include "fd-util.h"

#include "fou-tunnel.h"

#include "geneve.h"

#include "ifb.h"

#include "ipoib.h"

#include "ipvlan.h"

#include "l2tp-tunnel.h"

#include "list.h"

#include "macsec.h"

#include "macvlan.h"

#include "netdev.h"

#include "netdevsim.h"

#include "netif-util.h"

#include "netlink-util.h"

#include "networkd-manager.h"

#include "networkd-queue.h"

#include "networkd-setlink.h"

#include "nlmon.h"

#include "path-lookup.h"

#include "siphash24.h"

#include "stat-util.h"

#include "string-table.h"

#include "string-util.h"

#include "strv.h"

#include "tunnel.h"

#include "tuntap.h"

#include "vcan.h"

#include "veth.h"

#include "vlan.h"

#include "vrf.h"

#include "vxcan.h"

#include "vxlan.h"

#include "wireguard.h"

#include "wlan.h"

#include "xfrm.h"

const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {

[NETDEV_KIND_BAREUDP] = &bare_udp_vtable,

[NETDEV_KIND_BATADV] = &batadv_vtable,

[NETDEV_KIND_BOND] = &bond_vtable,

[NETDEV_KIND_BRIDGE] = &bridge_vtable,

[NETDEV_KIND_DUMMY] = &dummy_vtable,

[NETDEV_KIND_ERSPAN] = &erspan_vtable,

[NETDEV_KIND_FOU] = &foutnl_vtable,

[NETDEV_KIND_GENEVE] = &geneve_vtable,

[NETDEV_KIND_GRE] = &gre_vtable,

[NETDEV_KIND_GRETAP] = &gretap_vtable,

[NETDEV_KIND_IFB] = &ifb_vtable,

[NETDEV_KIND_IP6GRE] = &ip6gre_vtable,

[NETDEV_KIND_IP6GRETAP] = &ip6gretap_vtable,

[NETDEV_KIND_IP6TNL] = &ip6tnl_vtable,

[NETDEV_KIND_IPIP] = &ipip_vtable,

[NETDEV_KIND_IPOIB] = &ipoib_vtable,

[NETDEV_KIND_IPVLAN] = &ipvlan_vtable,

[NETDEV_KIND_IPVTAP] = &ipvtap_vtable,

[NETDEV_KIND_L2TP] = &l2tptnl_vtable,

[NETDEV_KIND_MACSEC] = &macsec_vtable,

[NETDEV_KIND_MACVLAN] = &macvlan_vtable,

[NETDEV_KIND_MACVTAP] = &macvtap_vtable,

[NETDEV_KIND_NETDEVSIM] = &netdevsim_vtable,

[NETDEV_KIND_NLMON] = &nlmon_vtable,

[NETDEV_KIND_SIT] = &sit_vtable,

[NETDEV_KIND_TAP] = &tap_vtable,

[NETDEV_KIND_TUN] = &tun_vtable,

[NETDEV_KIND_VCAN] = &vcan_vtable,

[NETDEV_KIND_VETH] = &veth_vtable,

[NETDEV_KIND_VLAN] = &vlan_vtable,

[NETDEV_KIND_VRF] = &vrf_vtable,

[NETDEV_KIND_VTI6] = &vti6_vtable,

[NETDEV_KIND_VTI] = &vti_vtable,

[NETDEV_KIND_VXCAN] = &vxcan_vtable,

[NETDEV_KIND_VXLAN] = &vxlan_vtable,

[NETDEV_KIND_WIREGUARD] = &wireguard_vtable,

[NETDEV_KIND_WLAN] = &wlan_vtable,

[NETDEV_KIND_XFRM] = &xfrm_vtable,

};

static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {

[NETDEV_KIND_BAREUDP] = "bareudp",

[NETDEV_KIND_BATADV] = "batadv",

[NETDEV_KIND_BOND] = "bond",

[NETDEV_KIND_BRIDGE] = "bridge",

[NETDEV_KIND_DUMMY] = "dummy",

[NETDEV_KIND_ERSPAN] = "erspan",

[NETDEV_KIND_FOU] = "fou",

[NETDEV_KIND_GENEVE] = "geneve",

[NETDEV_KIND_GRE] = "gre",

[NETDEV_KIND_GRETAP] = "gretap",

[NETDEV_KIND_IFB] = "ifb",

[NETDEV_KIND_IP6GRE] = "ip6gre",

[NETDEV_KIND_IP6GRETAP] = "ip6gretap",

[NETDEV_KIND_IP6TNL] = "ip6tnl",

[NETDEV_KIND_IPIP] = "ipip",

[NETDEV_KIND_IPOIB] = "ipoib",

[NETDEV_KIND_IPVLAN] = "ipvlan",

[NETDEV_KIND_IPVTAP] = "ipvtap",

[NETDEV_KIND_L2TP] = "l2tp",

[NETDEV_KIND_MACSEC] = "macsec",

[NETDEV_KIND_MACVLAN] = "macvlan",

[NETDEV_KIND_MACVTAP] = "macvtap",

[NETDEV_KIND_NETDEVSIM] = "netdevsim",

[NETDEV_KIND_NLMON] = "nlmon",

[NETDEV_KIND_SIT] = "sit",

[NETDEV_KIND_TAP] = "tap",

[NETDEV_KIND_TUN] = "tun",

[NETDEV_KIND_VCAN] = "vcan",

[NETDEV_KIND_VETH] = "veth",

[NETDEV_KIND_VLAN] = "vlan",

[NETDEV_KIND_VRF] = "vrf",

[NETDEV_KIND_VTI6] = "vti6",

[NETDEV_KIND_VTI] = "vti",

[NETDEV_KIND_VXCAN] = "vxcan",

[NETDEV_KIND_VXLAN] = "vxlan",

[NETDEV_KIND_WIREGUARD] = "wireguard",

[NETDEV_KIND_WLAN] = "wlan",

[NETDEV_KIND_XFRM] = "xfrm",

};

DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);

bool netdev_is_managed(NetDev *netdev) {

if (!netdev || !netdev->manager || !netdev->ifname)

return false;

return hashmap_get(netdev->manager->netdevs, netdev->ifname) == netdev;

}

static bool netdev_is_stacked_and_independent(NetDev *netdev) {

assert(netdev);

if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED)

return false;

switch (netdev->kind) {

case NETDEV_KIND_ERSPAN:

return ERSPAN(netdev)->independent;

case NETDEV_KIND_GRE:

return GRE(netdev)->independent;

case NETDEV_KIND_GRETAP:

return GRETAP(netdev)->independent;

case NETDEV_KIND_IP6GRE:

return IP6GRE(netdev)->independent;

case NETDEV_KIND_IP6GRETAP:

return IP6GRETAP(netdev)->independent;

case NETDEV_KIND_IP6TNL:

return IP6TNL(netdev)->independent;

case NETDEV_KIND_IPIP:

return IPIP(netdev)->independent;

case NETDEV_KIND_SIT:

return SIT(netdev)->independent;

case NETDEV_KIND_VTI:

return VTI(netdev)->independent;

case NETDEV_KIND_VTI6:

return VTI6(netdev)->independent;

case NETDEV_KIND_VXLAN:

return VXLAN(netdev)->independent;

case NETDEV_KIND_XFRM:

return XFRM(netdev)->independent;

default:

return false;

}

}

static bool netdev_is_stacked(NetDev *netdev) {

assert(netdev);

if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED)

return false;

if (netdev_is_stacked_and_independent(netdev))

return false;

return true;

}

static void netdev_detach_from_manager(NetDev *netdev) {

if (netdev->ifname && netdev->manager)

hashmap_remove(netdev->manager->netdevs, netdev->ifname);

}

static NetDev *netdev_free(NetDev *netdev) {

assert(netdev);

netdev_detach_from_manager(netdev);

free(netdev->filename);

free(netdev->description);

free(netdev->ifname);

condition_free_list(netdev->conditions);

/* Invoke the per-kind done() destructor, but only if the state field is initialized. We conditionalize that

if (netdev->state != _NETDEV_STATE_INVALID &&

NETDEV_VTABLE(netdev) &&

NETDEV_VTABLE(netdev)->done)

NETDEV_VTABLE(netdev)->done(netdev);

return mfree(netdev);

}

DEFINE_TRIVIAL_REF_UNREF_FUNC(NetDev, netdev, netdev_free);

void netdev_drop(NetDev *netdev) {

if (!netdev)

return;

if (netdev_is_stacked(netdev)) {

/* The netdev may be removed due to the underlying device removal, and the device may

netdev->state = NETDEV_STATE_LOADING;

netdev->ifindex = 0;

log_netdev_debug(netdev, "netdev removed");

return;

}

netdev->state = NETDEV_STATE_LINGER;

log_netdev_debug(netdev, "netdev removed");

netdev_detach_from_manager(netdev);

netdev_unref(netdev);

return;

}

int netdev_get(Manager *manager, const char *name, NetDev **ret) {

NetDev *netdev;

assert(manager);

assert(name);

assert(ret);

netdev = hashmap_get(manager->netdevs, name);

if (!netdev)

return -ENOENT;

*ret = netdev;

return 0;

}

void netdev_enter_failed(NetDev *netdev) {

netdev->state = NETDEV_STATE_FAILED;

}

static int netdev_enter_ready(NetDev *netdev) {

assert(netdev);

assert(netdev->ifname);

if (netdev->state != NETDEV_STATE_CREATING)

return 0;

netdev->state = NETDEV_STATE_READY;

log_netdev_info(netdev, "netdev ready");

if (NETDEV_VTABLE(netdev)->post_create)

NETDEV_VTABLE(netdev)->post_create(netdev, NULL);

return 0;

}

static int netdev_create_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) {

int r;

assert(netdev);

assert(netdev->state != _NETDEV_STATE_INVALID);

r = sd_netlink_message_get_errno(m);

if (r == -EEXIST)

log_netdev_info(netdev, "netdev exists, using existing without changing its parameters");

else if (r < 0) {

log_netdev_warning_errno(netdev, r, "netdev could not be created: %m");

netdev_enter_failed(netdev);

return 1;

}

log_netdev_debug(netdev, "Created");

return 1;

}

int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *message) {

uint16_t type;

const char *kind;

const char *received_kind;

const char *received_name;

int r, ifindex;

assert(netdev);

assert(message);

r = sd_netlink_message_get_type(message, &type);

if (r < 0)

return log_netdev_error_errno(netdev, r, "Could not get rtnl message type: %m");

if (type != RTM_NEWLINK)

return log_netdev_error_errno(netdev, SYNTHETIC_ERRNO(EINVAL), "Cannot set ifindex from unexpected rtnl message type.");

r = sd_rtnl_message_link_get_ifindex(message, &ifindex);

if (r < 0) {

log_netdev_error_errno(netdev, r, "Could not get ifindex: %m");

netdev_enter_failed(netdev);

return r;

} else if (ifindex <= 0) {

log_netdev_error(netdev, "Got invalid ifindex: %d", ifindex);

netdev_enter_failed(netdev);

return -EINVAL;

}

if (netdev->ifindex > 0) {

if (netdev->ifindex != ifindex) {

log_netdev_error(netdev, "Could not set ifindex to %d, already set to %d",

ifindex, netdev->ifindex);

netdev_enter_failed(netdev);

return -EEXIST;

} else

/* ifindex already set to the same for this netdev */

return 0;

}

r = sd_netlink_message_read_string(message, IFLA_IFNAME, &received_name);

if (r < 0)

return log_netdev_error_errno(netdev, r, "Could not get IFNAME: %m");

if (!streq(netdev->ifname, received_name)) {

log_netdev_error(netdev, "Received newlink with wrong IFNAME %s", received_name);

netdev_enter_failed(netdev);

return -EINVAL;

}

if (!NETDEV_VTABLE(netdev)->skip_netdev_kind_check) {

r = sd_netlink_message_enter_container(message, IFLA_LINKINFO);

if (r < 0)

return log_netdev_error_errno(netdev, r, "Could not get LINKINFO: %m");

r = sd_netlink_message_read_string(message, IFLA_INFO_KIND, &received_kind);

if (r < 0)

return log_netdev_error_errno(netdev, r, "Could not get KIND: %m");

r = sd_netlink_message_exit_container(message);

if (r < 0)

return log_netdev_error_errno(netdev, r, "Could not exit container: %m");

if (netdev->kind == NETDEV_KIND_TAP)

/* the kernel does not distinguish between tun and tap */

kind = "tun";

else {

kind = netdev_kind_to_string(netdev->kind);

if (!kind) {

log_netdev_error(netdev, "Could not get kind");

netdev_enter_failed(netdev);

return -EINVAL;

}

}

if (!streq(kind, received_kind)) {

log_netdev_error(netdev, "Received newlink with wrong KIND %s, expected %s",

received_kind, kind);

netdev_enter_failed(netdev);

return -EINVAL;

}

}

netdev->ifindex = ifindex;

log_netdev_debug(netdev, "netdev has index %d", netdev->ifindex);

netdev_enter_ready(netdev);

return 0;

}

#define HASH_KEY SD_ID128_MAKE(52,e1,45,bd,00,6f,29,96,21,c6,30,6d,83,71,04,48)

int netdev_generate_hw_addr(

struct hw_addr_data *ret) {

struct hw_addr_data a = HW_ADDR_NULL;

bool is_static = false;

int r;

assert(netdev);

assert(name);

assert(hw_addr);

assert(ret);

if (hw_addr_equal(hw_addr, &HW_ADDR_NONE)) {

*ret = HW_ADDR_NULL;

return 0;

}

if (hw_addr->length == 0) {

uint64_t result;

/* HardwareAddress= is not specified. */

if (!NETDEV_VTABLE(netdev)->generate_mac)

goto finalize;

if (!IN_SET(NETDEV_VTABLE(netdev)->iftype, ARPHRD_ETHER, ARPHRD_INFINIBAND))

goto finalize;

r = net_get_unique_predictable_data_from_name(name, &HASH_KEY, &result);

if (r < 0) {

log_netdev_warning_errno(netdev, r,

"Failed to generate persistent MAC address, ignoring: %m");

goto finalize;

}

a.length = arphrd_to_hw_addr_len(NETDEV_VTABLE(netdev)->iftype);

switch (NETDEV_VTABLE(netdev)->iftype) {

case ARPHRD_ETHER:

assert(a.length <= sizeof(result));

memcpy(a.bytes, &result, a.length);

if (ether_addr_is_null(&a.ether) || ether_addr_is_broadcast(&a.ether)) {

log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),

"Failed to generate persistent MAC address, ignoring: %m");

a = HW_ADDR_NULL;

goto finalize;

}

break;

case ARPHRD_INFINIBAND:

if (result == 0) {

log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL),

"Failed to generate persistent MAC address: %m");

goto finalize;

}

assert(a.length >= sizeof(result));

memzero(a.bytes, a.length - sizeof(result));

memcpy(a.bytes + a.length - sizeof(result), &result, sizeof(result));

break;

default:

assert_not_reached();

}

} else {

a = *hw_addr;

is_static = true;

}

r = net_verify_hardware_address(name, is_static, NETDEV_VTABLE(netdev)->iftype,

parent ? &parent->hw_addr : NULL, &a);

if (r < 0)

return r;

finalize:

*ret = a;

return 0;

}

static int netdev_create_message(NetDev *netdev, Link *link, sd_netlink_message *m) {

int r;

r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname);

if (r < 0)

return r;

struct hw_addr_data hw_addr;

r = netdev_generate_hw_addr(netdev, link, netdev->ifname, &netdev->hw_addr, &hw_addr);

if (r < 0)

return r;

if (hw_addr.length > 0) {

log_netdev_debug(netdev, "Using MAC address: %s", HW_ADDR_TO_STR(&hw_addr));

r = netlink_message_append_hw_addr(m, IFLA_ADDRESS, &hw_addr);

if (r < 0)

return r;

}

if (netdev->mtu != 0) {

r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu);

if (r < 0)

return r;

}

if (link) {

r = sd_netlink_message_append_u32(m, IFLA_LINK, link->ifindex);

if (r < 0)

return r;

}

r = sd_netlink_message_open_container(m, IFLA_LINKINFO);

if (r < 0)

return r;

if (NETDEV_VTABLE(netdev)->fill_message_create) {

r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));

if (r < 0)

return r;

r = NETDEV_VTABLE(netdev)->fill_message_create(netdev, link, m);

if (r < 0)

return r;

r = sd_netlink_message_close_container(m);

if (r < 0)

return r;

} else {

r = sd_netlink_message_append_string(m, IFLA_INFO_KIND, netdev_kind_to_string(netdev->kind));

if (r < 0)

return r;

}

r = sd_netlink_message_close_container(m);

if (r < 0)

return r;

return 0;

}

static int independent_netdev_create(NetDev *netdev) {

_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;

int r;

assert(netdev);

/* create netdev */

if (NETDEV_VTABLE(netdev)->create) {

r = NETDEV_VTABLE(netdev)->create(netdev);

if (r < 0)

return r;

log_netdev_debug(netdev, "Created");

return 0;

}

r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);

if (r < 0)

return r;

r = netdev_create_message(netdev, NULL, m);

if (r < 0)

return r;

r = netlink_call_async(netdev->manager->rtnl, NULL, m, netdev_create_handler,

netdev_destroy_callback, netdev);

if (r < 0)

return r;

netdev_ref(netdev);

netdev->state = NETDEV_STATE_CREATING;

log_netdev_debug(netdev, "Creating");

return 0;

}

static int stacked_netdev_create(NetDev *netdev, Link *link, Request *req) {

_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;

int r;

assert(netdev);

assert(netdev->manager);

assert(link);

assert(req);

r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);

if (r < 0)

return r;

r = netdev_create_message(netdev, link, m);

if (r < 0)

return r;

r = request_call_netlink_async(netdev->manager->rtnl, m, req);

if (r < 0)

return r;

netdev->state = NETDEV_STATE_CREATING;

log_netdev_debug(netdev, "Creating");

return 0;

}

static int netdev_is_ready_to_create(NetDev *netdev, Link *link) {

assert(netdev);

if (netdev->state != NETDEV_STATE_LOADING)

return false;

if (link) {

if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED))

return false;

if (link->set_link_messages > 0)

return false;

/* If stacked netdevs are created before the underlying interface being activated, then

if (!link->activated)

return false;

}

if (NETDEV_VTABLE(netdev)->is_ready_to_create)

return NETDEV_VTABLE(netdev)->is_ready_to_create(netdev, link);

return true;

}

static int stacked_netdev_process_request(Request *req, Link *link, void *userdata) {

NetDev *netdev = ASSERT_PTR(userdata);

int r;

assert(req);

assert(link);

r = netdev_is_ready_to_create(netdev, link);

if (r <= 0)

return r;

r = stacked_netdev_create(netdev, link, req);

if (r < 0)

return log_netdev_warning_errno(netdev, r, "Failed to create netdev: %m");

return 1;

}

static int create_stacked_netdev_handler(sd_netlink *rtnl, sd_netlink_message *m, Request *req, Link *link, void *userdata) {

int r;

assert(m);

assert(link);

r = sd_netlink_message_get_errno(m);

if (r < 0 && r != -EEXIST) {

log_link_message_warning_errno(link, m, r, "Could not create stacked netdev");

link_enter_failed(link);

return 0;

}

if (link->create_stacked_netdev_messages == 0) {

link->stacked_netdevs_created = true;

log_link_debug(link, "Stacked netdevs created.");

link_check_ready(link);

}

return 0;

}

int link_request_stacked_netdev(Link *link, NetDev *netdev) {

int r;

assert(link);

assert(netdev);

if (!netdev_is_stacked(netdev))

return -EINVAL;

if (!IN_SET(netdev->state, NETDEV_STATE_LOADING, NETDEV_STATE_FAILED) || netdev->ifindex > 0)

return 0; /* Already created. */

link->stacked_netdevs_created = false;

r = link_queue_request_full(link, REQUEST_TYPE_NETDEV_STACKED,

netdev_ref(netdev), (mfree_func_t) netdev_unref,

trivial_hash_func, trivial_compare_func,

stacked_netdev_process_request,

&link->create_stacked_netdev_messages,

create_stacked_netdev_handler, NULL);

if (r < 0)

return log_link_error_errno(link, r, "Failed to request stacked netdev '%s': %m",

netdev->ifname);

log_link_debug(link, "Requested stacked netdev '%s'", netdev->ifname);

return 0;

}

static int independent_netdev_process_request(Request *req, Link *link, void *userdata) {

NetDev *netdev = ASSERT_PTR(userdata);

int r;

assert(!link);

r = netdev_is_ready_to_create(netdev, NULL);

if (r <= 0)

return r;

r = independent_netdev_create(netdev);

if (r < 0)

return log_netdev_warning_errno(netdev, r, "Failed to create netdev: %m");

return 1;

}

static int netdev_request_to_create(NetDev *netdev) {

int r;

assert(netdev);

if (netdev_is_stacked(netdev))

return 0;

r = netdev_is_ready_to_create(netdev, NULL);

if (r < 0)

return r;

if (r > 0) {

/* If the netdev has no dependency, then create it now. */

r = independent_netdev_create(netdev);

if (r < 0)

return log_netdev_warning_errno(netdev, r, "Failed to create netdev: %m");

} else {

/* Otherwise, wait for the dependencies being resolved. */

r = netdev_queue_request(netdev, independent_netdev_process_request, NULL);

if (r < 0)

return log_netdev_warning_errno(netdev, r, "Failed to request to create netdev: %m");

}

return 0;

}

int netdev_load_one(Manager *manager, const char *filename) {

_cleanup_(netdev_unrefp) NetDev *netdev_raw = NULL, *netdev = NULL;

const char *dropin_dirname;

int r;

assert(manager);

assert(filename);

r = null_or_empty_path(filename);

if (r == -ENOENT)

return 0;

if (r < 0)

return r;

if (r > 0) {

log_debug("Skipping empty file: %s", filename);

return 0;

}

netdev_raw = new(NetDev, 1);

if (!netdev_raw)

return log_oom();

*netdev_raw = (NetDev) {

.n_ref = 1,

.kind = _NETDEV_KIND_INVALID,

.state = _NETDEV_STATE_INVALID, /* an invalid state means done() of the implementation won't be called on destruction */

};

dropin_dirname = strjoina(basename(filename), ".d");

r = config_parse_many(

STRV_MAKE_CONST(filename), NETWORK_DIRS, dropin_dirname,

NETDEV_COMMON_SECTIONS NETDEV_OTHER_SECTIONS,

config_item_perf_lookup, network_netdev_gperf_lookup,

CONFIG_PARSE_WARN,

netdev_raw,

NULL);

if (r < 0)

return r;

/* skip out early if configuration does not match the environment */

if (!condition_test_list(netdev_raw->conditions, environ, NULL, NULL, NULL)) {

log_debug("%s: Conditions in the file do not match the system environment, skipping.", filename);

return 0;

}

if (netdev_raw->kind == _NETDEV_KIND_INVALID) {

log_warning("NetDev has no Kind= configured in %s. Ignoring", filename);

return 0;

}

if (!netdev_raw->ifname) {

log_warning("NetDev without Name= configured in %s. Ignoring", filename);

return 0;

}

netdev = malloc0(NETDEV_VTABLE(netdev_raw)->object_size);

if (!netdev)

return log_oom();

netdev->n_ref = 1;

netdev->manager = manager;

netdev->kind = netdev_raw->kind;

netdev->state = NETDEV_STATE_LOADING; /* we initialize the state here for the first time,

if (NETDEV_VTABLE(netdev)->init)

NETDEV_VTABLE(netdev)->init(netdev);

r = config_parse_many(

STRV_MAKE_CONST(filename), NETWORK_DIRS, dropin_dirname,

NETDEV_VTABLE(netdev)->sections,

config_item_perf_lookup, network_netdev_gperf_lookup,

CONFIG_PARSE_WARN,

netdev, NULL);

if (r < 0)

return r;

/* verify configuration */

if (NETDEV_VTABLE(netdev)->config_verify) {

r = NETDEV_VTABLE(netdev)->config_verify(netdev, filename);

if (r < 0)

return 0;

}

netdev->filename = strdup(filename);

if (!netdev->filename)

return log_oom();

r = hashmap_ensure_put(&netdev->manager->netdevs, &string_hash_ops, netdev->ifname, netdev);

if (r == -ENOMEM)

return log_oom();

if (r == -EEXIST) {

NetDev *n = hashmap_get(netdev->manager->netdevs, netdev->ifname);

assert(n);

if (!streq(netdev->filename, n->filename))

log_netdev_warning_errno(netdev, r,

"Device was already configured by file %s, ignoring %s.",

n->filename, netdev->filename);

/* Clear ifname before netdev_free() is called. Otherwise, the NetDev object 'n' is

netdev->ifname = mfree(netdev->ifname);

return 0;

}

if (r < 0)

return r;

log_netdev_debug(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));

r = netdev_request_to_create(netdev);

if (r < 0)

return r;

TAKE_PTR(netdev);

return 0;

}

int netdev_load(Manager *manager, bool reload) {

_cleanup_strv_free_ char **files = NULL;

int r;

assert(manager);

if (!reload)

hashmap_clear_with_destructor(manager->netdevs, netdev_unref);

r = conf_files_list_strv(&files, ".netdev", NULL, 0, NETWORK_DIRS);

if (r < 0)

return log_error_errno(r, "Failed to enumerate netdev files: %m");

STRV_FOREACH(f, files) {

r = netdev_load_one(manager, *f);

if (r < 0)

log_error_errno(r, "Failed to load %s, ignoring: %m", *f);

}

return 0;

}

int config_parse_netdev_kind(

void *userdata) {

NetDevKind k, *kind = data;

assert(filename);

assert(rvalue);

assert(data);

k = netdev_kind_from_string(rvalue);

if (k < 0) {

log_syntax(unit, LOG_WARNING, filename, line, k, "Failed to parse netdev kind, ignoring assignment: %s", rvalue);

return 0;

}

if (*kind != _NETDEV_KIND_INVALID && *kind != k) {

log_syntax(unit, LOG_WARNING, filename, line, 0,

"Specified netdev kind is different from the previous value '%s', ignoring assignment: %s",

netdev_kind_to_string(*kind), rvalue);

return 0;

}

*kind = k;

return 0;

}

int config_parse_netdev_hw_addr(

void *userdata) {

struct hw_addr_data *hw_addr = data;

assert(rvalue);

assert(data);

if (streq(rvalue, "none")) {

*hw_addr = HW_ADDR_NONE;

return 0;

}

return config_parse_hw_addr(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);

}