1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
4 #include <netinet/in.h>
5 #include <linux/if_arp.h>
8 #include "alloc-util.h"
9 #include "arphrd-util.h"
14 #include "conf-files.h"
15 #include "conf-parser.h"
18 #include "fou-tunnel.h"
23 #include "l2tp-tunnel.h"
28 #include "netdevsim.h"
29 #include "netif-util.h"
30 #include "netlink-util.h"
31 #include "networkd-manager.h"
32 #include "networkd-queue.h"
33 #include "networkd-setlink.h"
34 #include "networkd-sriov.h"
36 #include "path-lookup.h"
37 #include "siphash24.h"
38 #include "stat-util.h"
39 #include "string-table.h"
40 #include "string-util.h"
50 #include "wireguard.h"
54 const NetDevVTable
* const netdev_vtable
[_NETDEV_KIND_MAX
] = {
55 [NETDEV_KIND_BAREUDP
] = &bare_udp_vtable
,
56 [NETDEV_KIND_BATADV
] = &batadv_vtable
,
57 [NETDEV_KIND_BOND
] = &bond_vtable
,
58 [NETDEV_KIND_BRIDGE
] = &bridge_vtable
,
59 [NETDEV_KIND_DUMMY
] = &dummy_vtable
,
60 [NETDEV_KIND_ERSPAN
] = &erspan_vtable
,
61 [NETDEV_KIND_FOU
] = &foutnl_vtable
,
62 [NETDEV_KIND_GENEVE
] = &geneve_vtable
,
63 [NETDEV_KIND_GRE
] = &gre_vtable
,
64 [NETDEV_KIND_GRETAP
] = &gretap_vtable
,
65 [NETDEV_KIND_IFB
] = &ifb_vtable
,
66 [NETDEV_KIND_IP6GRE
] = &ip6gre_vtable
,
67 [NETDEV_KIND_IP6GRETAP
] = &ip6gretap_vtable
,
68 [NETDEV_KIND_IP6TNL
] = &ip6tnl_vtable
,
69 [NETDEV_KIND_IPIP
] = &ipip_vtable
,
70 [NETDEV_KIND_IPOIB
] = &ipoib_vtable
,
71 [NETDEV_KIND_IPVLAN
] = &ipvlan_vtable
,
72 [NETDEV_KIND_IPVTAP
] = &ipvtap_vtable
,
73 [NETDEV_KIND_L2TP
] = &l2tptnl_vtable
,
74 [NETDEV_KIND_MACSEC
] = &macsec_vtable
,
75 [NETDEV_KIND_MACVLAN
] = &macvlan_vtable
,
76 [NETDEV_KIND_MACVTAP
] = &macvtap_vtable
,
77 [NETDEV_KIND_NETDEVSIM
] = &netdevsim_vtable
,
78 [NETDEV_KIND_NLMON
] = &nlmon_vtable
,
79 [NETDEV_KIND_SIT
] = &sit_vtable
,
80 [NETDEV_KIND_TAP
] = &tap_vtable
,
81 [NETDEV_KIND_TUN
] = &tun_vtable
,
82 [NETDEV_KIND_VCAN
] = &vcan_vtable
,
83 [NETDEV_KIND_VETH
] = &veth_vtable
,
84 [NETDEV_KIND_VLAN
] = &vlan_vtable
,
85 [NETDEV_KIND_VRF
] = &vrf_vtable
,
86 [NETDEV_KIND_VTI6
] = &vti6_vtable
,
87 [NETDEV_KIND_VTI
] = &vti_vtable
,
88 [NETDEV_KIND_VXCAN
] = &vxcan_vtable
,
89 [NETDEV_KIND_VXLAN
] = &vxlan_vtable
,
90 [NETDEV_KIND_WIREGUARD
] = &wireguard_vtable
,
91 [NETDEV_KIND_WLAN
] = &wlan_vtable
,
92 [NETDEV_KIND_XFRM
] = &xfrm_vtable
,
95 static const char* const netdev_kind_table
[_NETDEV_KIND_MAX
] = {
96 [NETDEV_KIND_BAREUDP
] = "bareudp",
97 [NETDEV_KIND_BATADV
] = "batadv",
98 [NETDEV_KIND_BOND
] = "bond",
99 [NETDEV_KIND_BRIDGE
] = "bridge",
100 [NETDEV_KIND_DUMMY
] = "dummy",
101 [NETDEV_KIND_ERSPAN
] = "erspan",
102 [NETDEV_KIND_FOU
] = "fou",
103 [NETDEV_KIND_GENEVE
] = "geneve",
104 [NETDEV_KIND_GRE
] = "gre",
105 [NETDEV_KIND_GRETAP
] = "gretap",
106 [NETDEV_KIND_IFB
] = "ifb",
107 [NETDEV_KIND_IP6GRE
] = "ip6gre",
108 [NETDEV_KIND_IP6GRETAP
] = "ip6gretap",
109 [NETDEV_KIND_IP6TNL
] = "ip6tnl",
110 [NETDEV_KIND_IPIP
] = "ipip",
111 [NETDEV_KIND_IPOIB
] = "ipoib",
112 [NETDEV_KIND_IPVLAN
] = "ipvlan",
113 [NETDEV_KIND_IPVTAP
] = "ipvtap",
114 [NETDEV_KIND_L2TP
] = "l2tp",
115 [NETDEV_KIND_MACSEC
] = "macsec",
116 [NETDEV_KIND_MACVLAN
] = "macvlan",
117 [NETDEV_KIND_MACVTAP
] = "macvtap",
118 [NETDEV_KIND_NETDEVSIM
] = "netdevsim",
119 [NETDEV_KIND_NLMON
] = "nlmon",
120 [NETDEV_KIND_SIT
] = "sit",
121 [NETDEV_KIND_TAP
] = "tap",
122 [NETDEV_KIND_TUN
] = "tun",
123 [NETDEV_KIND_VCAN
] = "vcan",
124 [NETDEV_KIND_VETH
] = "veth",
125 [NETDEV_KIND_VLAN
] = "vlan",
126 [NETDEV_KIND_VRF
] = "vrf",
127 [NETDEV_KIND_VTI6
] = "vti6",
128 [NETDEV_KIND_VTI
] = "vti",
129 [NETDEV_KIND_VXCAN
] = "vxcan",
130 [NETDEV_KIND_VXLAN
] = "vxlan",
131 [NETDEV_KIND_WIREGUARD
] = "wireguard",
132 [NETDEV_KIND_WLAN
] = "wlan",
133 [NETDEV_KIND_XFRM
] = "xfrm",
136 DEFINE_STRING_TABLE_LOOKUP(netdev_kind
, NetDevKind
);
138 bool netdev_is_managed(NetDev
*netdev
) {
139 if (!netdev
|| !netdev
->manager
|| !netdev
->ifname
)
142 return hashmap_get(netdev
->manager
->netdevs
, netdev
->ifname
) == netdev
;
145 static bool netdev_is_stacked_and_independent(NetDev
*netdev
) {
148 if (netdev_get_create_type(netdev
) != NETDEV_CREATE_STACKED
)
151 switch (netdev
->kind
) {
152 case NETDEV_KIND_ERSPAN
:
153 return ERSPAN(netdev
)->independent
;
154 case NETDEV_KIND_GRE
:
155 return GRE(netdev
)->independent
;
156 case NETDEV_KIND_GRETAP
:
157 return GRETAP(netdev
)->independent
;
158 case NETDEV_KIND_IP6GRE
:
159 return IP6GRE(netdev
)->independent
;
160 case NETDEV_KIND_IP6GRETAP
:
161 return IP6GRETAP(netdev
)->independent
;
162 case NETDEV_KIND_IP6TNL
:
163 return IP6TNL(netdev
)->independent
;
164 case NETDEV_KIND_IPIP
:
165 return IPIP(netdev
)->independent
;
166 case NETDEV_KIND_SIT
:
167 return SIT(netdev
)->independent
;
168 case NETDEV_KIND_VTI
:
169 return VTI(netdev
)->independent
;
170 case NETDEV_KIND_VTI6
:
171 return VTI6(netdev
)->independent
;
172 case NETDEV_KIND_VXLAN
:
173 return VXLAN(netdev
)->independent
;
174 case NETDEV_KIND_XFRM
:
175 return XFRM(netdev
)->independent
;
181 static bool netdev_is_stacked(NetDev
*netdev
) {
184 if (netdev_get_create_type(netdev
) != NETDEV_CREATE_STACKED
)
187 if (netdev_is_stacked_and_independent(netdev
))
193 static void netdev_detach_from_manager(NetDev
*netdev
) {
194 if (netdev
->ifname
&& netdev
->manager
)
195 hashmap_remove(netdev
->manager
->netdevs
, netdev
->ifname
);
198 static NetDev
*netdev_free(NetDev
*netdev
) {
201 netdev_detach_from_manager(netdev
);
203 free(netdev
->filename
);
205 free(netdev
->description
);
206 free(netdev
->ifname
);
207 condition_free_list(netdev
->conditions
);
209 /* Invoke the per-kind done() destructor, but only if the state field is initialized. We conditionalize that
210 * because we parse .netdev files twice: once to determine the kind (with a short, minimal NetDev structure
211 * allocation, with no room for per-kind fields), and once to read the kind's properties (with a full,
212 * comprehensive NetDev structure allocation with enough space for whatever the specific kind needs). Now, in
213 * the first case we shouldn't try to destruct the per-kind NetDev fields on destruction, in the second case we
214 * should. We use the state field to discern the two cases: it's _NETDEV_STATE_INVALID on the first "raw"
216 if (netdev
->state
!= _NETDEV_STATE_INVALID
&&
217 NETDEV_VTABLE(netdev
) &&
218 NETDEV_VTABLE(netdev
)->done
)
219 NETDEV_VTABLE(netdev
)->done(netdev
);
221 return mfree(netdev
);
224 DEFINE_TRIVIAL_REF_UNREF_FUNC(NetDev
, netdev
, netdev_free
);
226 void netdev_drop(NetDev
*netdev
) {
230 if (netdev_is_stacked(netdev
)) {
231 /* The netdev may be removed due to the underlying device removal, and the device may
232 * be re-added later. */
233 netdev
->state
= NETDEV_STATE_LOADING
;
236 log_netdev_debug(netdev
, "netdev removed");
240 netdev
->state
= NETDEV_STATE_LINGER
;
242 log_netdev_debug(netdev
, "netdev removed");
244 netdev_detach_from_manager(netdev
);
245 netdev_unref(netdev
);
249 int netdev_get(Manager
*manager
, const char *name
, NetDev
**ret
) {
256 netdev
= hashmap_get(manager
->netdevs
, name
);
265 void netdev_enter_failed(NetDev
*netdev
) {
266 netdev
->state
= NETDEV_STATE_FAILED
;
269 static int netdev_enter_ready(NetDev
*netdev
) {
271 assert(netdev
->ifname
);
273 if (netdev
->state
!= NETDEV_STATE_CREATING
)
276 netdev
->state
= NETDEV_STATE_READY
;
278 log_netdev_info(netdev
, "netdev ready");
280 if (NETDEV_VTABLE(netdev
)->post_create
)
281 NETDEV_VTABLE(netdev
)->post_create(netdev
, NULL
);
286 /* callback for netdev's created without a backing Link */
287 static int netdev_create_handler(sd_netlink
*rtnl
, sd_netlink_message
*m
, NetDev
*netdev
) {
291 assert(netdev
->state
!= _NETDEV_STATE_INVALID
);
293 r
= sd_netlink_message_get_errno(m
);
295 log_netdev_info(netdev
, "netdev exists, using existing without changing its parameters");
297 log_netdev_warning_errno(netdev
, r
, "netdev could not be created: %m");
298 netdev_enter_failed(netdev
);
303 log_netdev_debug(netdev
, "Created");
308 int netdev_set_ifindex(NetDev
*netdev
, sd_netlink_message
*message
) {
311 const char *received_kind
;
312 const char *received_name
;
318 r
= sd_netlink_message_get_type(message
, &type
);
320 return log_netdev_error_errno(netdev
, r
, "Could not get rtnl message type: %m");
322 if (type
!= RTM_NEWLINK
)
323 return log_netdev_error_errno(netdev
, SYNTHETIC_ERRNO(EINVAL
), "Cannot set ifindex from unexpected rtnl message type.");
325 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
327 log_netdev_error_errno(netdev
, r
, "Could not get ifindex: %m");
328 netdev_enter_failed(netdev
);
330 } else if (ifindex
<= 0) {
331 log_netdev_error(netdev
, "Got invalid ifindex: %d", ifindex
);
332 netdev_enter_failed(netdev
);
336 if (netdev
->ifindex
> 0) {
337 if (netdev
->ifindex
!= ifindex
) {
338 log_netdev_error(netdev
, "Could not set ifindex to %d, already set to %d",
339 ifindex
, netdev
->ifindex
);
340 netdev_enter_failed(netdev
);
343 /* ifindex already set to the same for this netdev */
347 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &received_name
);
349 return log_netdev_error_errno(netdev
, r
, "Could not get IFNAME: %m");
351 if (!streq(netdev
->ifname
, received_name
)) {
352 log_netdev_error(netdev
, "Received newlink with wrong IFNAME %s", received_name
);
353 netdev_enter_failed(netdev
);
357 if (!NETDEV_VTABLE(netdev
)->skip_netdev_kind_check
) {
359 r
= sd_netlink_message_enter_container(message
, IFLA_LINKINFO
);
361 return log_netdev_error_errno(netdev
, r
, "Could not get LINKINFO: %m");
363 r
= sd_netlink_message_read_string(message
, IFLA_INFO_KIND
, &received_kind
);
365 return log_netdev_error_errno(netdev
, r
, "Could not get KIND: %m");
367 r
= sd_netlink_message_exit_container(message
);
369 return log_netdev_error_errno(netdev
, r
, "Could not exit container: %m");
371 if (netdev
->kind
== NETDEV_KIND_TAP
)
372 /* the kernel does not distinguish between tun and tap */
375 kind
= netdev_kind_to_string(netdev
->kind
);
377 log_netdev_error(netdev
, "Could not get kind");
378 netdev_enter_failed(netdev
);
383 if (!streq(kind
, received_kind
)) {
384 log_netdev_error(netdev
, "Received newlink with wrong KIND %s, expected %s",
385 received_kind
, kind
);
386 netdev_enter_failed(netdev
);
391 netdev
->ifindex
= ifindex
;
393 log_netdev_debug(netdev
, "netdev has index %d", netdev
->ifindex
);
395 netdev_enter_ready(netdev
);
400 #define HASH_KEY SD_ID128_MAKE(52,e1,45,bd,00,6f,29,96,21,c6,30,6d,83,71,04,48)
402 int netdev_generate_hw_addr(
406 const struct hw_addr_data
*hw_addr
,
407 struct hw_addr_data
*ret
) {
409 struct hw_addr_data a
= HW_ADDR_NULL
;
410 bool is_static
= false;
418 if (hw_addr_equal(hw_addr
, &HW_ADDR_NONE
)) {
423 if (hw_addr
->length
== 0) {
426 /* HardwareAddress= is not specified. */
428 if (!NETDEV_VTABLE(netdev
)->generate_mac
)
431 if (!IN_SET(NETDEV_VTABLE(netdev
)->iftype
, ARPHRD_ETHER
, ARPHRD_INFINIBAND
))
434 r
= net_get_unique_predictable_data_from_name(name
, &HASH_KEY
, &result
);
436 log_netdev_warning_errno(netdev
, r
,
437 "Failed to generate persistent MAC address, ignoring: %m");
441 a
.length
= arphrd_to_hw_addr_len(NETDEV_VTABLE(netdev
)->iftype
);
443 switch (NETDEV_VTABLE(netdev
)->iftype
) {
445 assert(a
.length
<= sizeof(result
));
446 memcpy(a
.bytes
, &result
, a
.length
);
448 if (ether_addr_is_null(&a
.ether
) || ether_addr_is_broadcast(&a
.ether
)) {
449 log_netdev_warning_errno(netdev
, SYNTHETIC_ERRNO(EINVAL
),
450 "Failed to generate persistent MAC address, ignoring: %m");
456 case ARPHRD_INFINIBAND
:
458 log_netdev_warning_errno(netdev
, SYNTHETIC_ERRNO(EINVAL
),
459 "Failed to generate persistent MAC address: %m");
463 assert(a
.length
>= sizeof(result
));
464 memzero(a
.bytes
, a
.length
- sizeof(result
));
465 memcpy(a
.bytes
+ a
.length
- sizeof(result
), &result
, sizeof(result
));
468 assert_not_reached();
476 r
= net_verify_hardware_address(name
, is_static
, NETDEV_VTABLE(netdev
)->iftype
,
477 parent
? &parent
->hw_addr
: NULL
, &a
);
486 static int netdev_create_message(NetDev
*netdev
, Link
*link
, sd_netlink_message
*m
) {
489 r
= sd_netlink_message_append_string(m
, IFLA_IFNAME
, netdev
->ifname
);
493 struct hw_addr_data hw_addr
;
494 r
= netdev_generate_hw_addr(netdev
, link
, netdev
->ifname
, &netdev
->hw_addr
, &hw_addr
);
498 if (hw_addr
.length
> 0) {
499 log_netdev_debug(netdev
, "Using MAC address: %s", HW_ADDR_TO_STR(&hw_addr
));
500 r
= netlink_message_append_hw_addr(m
, IFLA_ADDRESS
, &hw_addr
);
505 if (netdev
->mtu
!= 0) {
506 r
= sd_netlink_message_append_u32(m
, IFLA_MTU
, netdev
->mtu
);
512 r
= sd_netlink_message_append_u32(m
, IFLA_LINK
, link
->ifindex
);
517 r
= sd_netlink_message_open_container(m
, IFLA_LINKINFO
);
521 if (NETDEV_VTABLE(netdev
)->fill_message_create
) {
522 r
= sd_netlink_message_open_container_union(m
, IFLA_INFO_DATA
, netdev_kind_to_string(netdev
->kind
));
526 r
= NETDEV_VTABLE(netdev
)->fill_message_create(netdev
, link
, m
);
530 r
= sd_netlink_message_close_container(m
);
534 r
= sd_netlink_message_append_string(m
, IFLA_INFO_KIND
, netdev_kind_to_string(netdev
->kind
));
539 r
= sd_netlink_message_close_container(m
);
546 static int independent_netdev_create(NetDev
*netdev
) {
547 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*m
= NULL
;
553 if (NETDEV_VTABLE(netdev
)->create
) {
554 r
= NETDEV_VTABLE(netdev
)->create(netdev
);
558 log_netdev_debug(netdev
, "Created");
562 r
= sd_rtnl_message_new_link(netdev
->manager
->rtnl
, &m
, RTM_NEWLINK
, 0);
566 r
= netdev_create_message(netdev
, NULL
, m
);
570 r
= netlink_call_async(netdev
->manager
->rtnl
, NULL
, m
, netdev_create_handler
,
571 netdev_destroy_callback
, netdev
);
577 netdev
->state
= NETDEV_STATE_CREATING
;
578 log_netdev_debug(netdev
, "Creating");
582 static int stacked_netdev_create(NetDev
*netdev
, Link
*link
, Request
*req
) {
583 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*m
= NULL
;
587 assert(netdev
->manager
);
591 r
= sd_rtnl_message_new_link(netdev
->manager
->rtnl
, &m
, RTM_NEWLINK
, 0);
595 r
= netdev_create_message(netdev
, link
, m
);
599 r
= request_call_netlink_async(netdev
->manager
->rtnl
, m
, req
);
603 netdev
->state
= NETDEV_STATE_CREATING
;
604 log_netdev_debug(netdev
, "Creating");
608 static bool link_is_ready_to_create_stacked_netdev_one(Link
*link
, bool allow_unmanaged
) {
611 if (!IN_SET(link
->state
, LINK_STATE_CONFIGURING
, LINK_STATE_CONFIGURED
, LINK_STATE_UNMANAGED
))
615 return allow_unmanaged
;
617 if (link
->set_link_messages
> 0)
620 /* If stacked netdevs are created before the underlying interface being activated, then
621 * the activation policy for the netdevs are ignored. See issue #22593. */
622 if (!link
->activated
)
628 static bool link_is_ready_to_create_stacked_netdev(Link
*link
) {
629 return check_ready_for_all_sr_iov_ports(link
, /* allow_unmanaged = */ false,
630 link_is_ready_to_create_stacked_netdev_one
);
633 static int netdev_is_ready_to_create(NetDev
*netdev
, Link
*link
) {
636 if (netdev
->state
!= NETDEV_STATE_LOADING
)
639 if (link
&& !link_is_ready_to_create_stacked_netdev(link
))
642 if (NETDEV_VTABLE(netdev
)->is_ready_to_create
)
643 return NETDEV_VTABLE(netdev
)->is_ready_to_create(netdev
, link
);
648 static int stacked_netdev_process_request(Request
*req
, Link
*link
, void *userdata
) {
649 NetDev
*netdev
= ASSERT_PTR(userdata
);
655 r
= netdev_is_ready_to_create(netdev
, link
);
659 r
= stacked_netdev_create(netdev
, link
, req
);
661 return log_netdev_warning_errno(netdev
, r
, "Failed to create netdev: %m");
666 static int create_stacked_netdev_handler(sd_netlink
*rtnl
, sd_netlink_message
*m
, Request
*req
, Link
*link
, void *userdata
) {
672 r
= sd_netlink_message_get_errno(m
);
673 if (r
< 0 && r
!= -EEXIST
) {
674 log_link_message_warning_errno(link
, m
, r
, "Could not create stacked netdev");
675 link_enter_failed(link
);
679 if (link
->create_stacked_netdev_messages
== 0) {
680 link
->stacked_netdevs_created
= true;
681 log_link_debug(link
, "Stacked netdevs created.");
682 link_check_ready(link
);
688 int link_request_stacked_netdev(Link
*link
, NetDev
*netdev
) {
694 if (!netdev_is_stacked(netdev
))
697 if (!IN_SET(netdev
->state
, NETDEV_STATE_LOADING
, NETDEV_STATE_FAILED
) || netdev
->ifindex
> 0)
698 return 0; /* Already created. */
700 link
->stacked_netdevs_created
= false;
701 r
= link_queue_request_full(link
, REQUEST_TYPE_NETDEV_STACKED
,
702 netdev_ref(netdev
), (mfree_func_t
) netdev_unref
,
703 trivial_hash_func
, trivial_compare_func
,
704 stacked_netdev_process_request
,
705 &link
->create_stacked_netdev_messages
,
706 create_stacked_netdev_handler
, NULL
);
708 return log_link_error_errno(link
, r
, "Failed to request stacked netdev '%s': %m",
711 log_link_debug(link
, "Requested stacked netdev '%s'", netdev
->ifname
);
715 static int independent_netdev_process_request(Request
*req
, Link
*link
, void *userdata
) {
716 NetDev
*netdev
= ASSERT_PTR(userdata
);
721 r
= netdev_is_ready_to_create(netdev
, NULL
);
725 r
= independent_netdev_create(netdev
);
727 return log_netdev_warning_errno(netdev
, r
, "Failed to create netdev: %m");
732 static int netdev_request_to_create(NetDev
*netdev
) {
737 if (netdev_is_stacked(netdev
))
740 r
= netdev_is_ready_to_create(netdev
, NULL
);
744 /* If the netdev has no dependency, then create it now. */
745 r
= independent_netdev_create(netdev
);
747 return log_netdev_warning_errno(netdev
, r
, "Failed to create netdev: %m");
750 /* Otherwise, wait for the dependencies being resolved. */
751 r
= netdev_queue_request(netdev
, independent_netdev_process_request
, NULL
);
753 return log_netdev_warning_errno(netdev
, r
, "Failed to request to create netdev: %m");
759 int netdev_load_one(Manager
*manager
, const char *filename
) {
760 _cleanup_(netdev_unrefp
) NetDev
*netdev_raw
= NULL
, *netdev
= NULL
;
761 const char *dropin_dirname
;
767 r
= null_or_empty_path(filename
);
769 return log_warning_errno(r
, "Failed to check if \"%s\" is empty: %m", filename
);
771 log_debug("Skipping empty file: %s", filename
);
775 netdev_raw
= new(NetDev
, 1);
779 *netdev_raw
= (NetDev
) {
781 .kind
= _NETDEV_KIND_INVALID
,
782 .state
= _NETDEV_STATE_INVALID
, /* an invalid state means done() of the implementation won't be called on destruction */
785 dropin_dirname
= strjoina(basename(filename
), ".d");
786 r
= config_parse_many(
787 STRV_MAKE_CONST(filename
), NETWORK_DIRS
, dropin_dirname
,
788 NETDEV_COMMON_SECTIONS NETDEV_OTHER_SECTIONS
,
789 config_item_perf_lookup
, network_netdev_gperf_lookup
,
795 return r
; /* config_parse_many() logs internally. */
797 /* skip out early if configuration does not match the environment */
798 if (!condition_test_list(netdev_raw
->conditions
, environ
, NULL
, NULL
, NULL
)) {
799 log_debug("%s: Conditions in the file do not match the system environment, skipping.", filename
);
803 if (netdev_raw
->kind
== _NETDEV_KIND_INVALID
)
804 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL
), "NetDev has no Kind= configured in \"%s\", ignoring.", filename
);
806 if (!netdev_raw
->ifname
)
807 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL
), "NetDev without Name= configured in \"%s\", ignoring.", filename
);
809 netdev
= malloc0(NETDEV_VTABLE(netdev_raw
)->object_size
);
814 netdev
->manager
= manager
;
815 netdev
->kind
= netdev_raw
->kind
;
816 netdev
->state
= NETDEV_STATE_LOADING
; /* we initialize the state here for the first time,
817 so that done() will be called on destruction */
819 if (NETDEV_VTABLE(netdev
)->init
)
820 NETDEV_VTABLE(netdev
)->init(netdev
);
822 r
= config_parse_many(
823 STRV_MAKE_CONST(filename
), NETWORK_DIRS
, dropin_dirname
,
824 NETDEV_VTABLE(netdev
)->sections
,
825 config_item_perf_lookup
, network_netdev_gperf_lookup
,
829 return r
; /* config_parse_many() logs internally. */
831 /* verify configuration */
832 if (NETDEV_VTABLE(netdev
)->config_verify
) {
833 r
= NETDEV_VTABLE(netdev
)->config_verify(netdev
, filename
);
835 return r
; /* config_verify() logs internally. */
838 netdev
->filename
= strdup(filename
);
839 if (!netdev
->filename
)
842 r
= hashmap_ensure_put(&netdev
->manager
->netdevs
, &string_hash_ops
, netdev
->ifname
, netdev
);
846 NetDev
*n
= hashmap_get(netdev
->manager
->netdevs
, netdev
->ifname
);
849 if (!streq(netdev
->filename
, n
->filename
))
850 log_netdev_warning_errno(netdev
, r
,
851 "Device was already configured by \"%s\", ignoring %s.",
852 n
->filename
, netdev
->filename
);
854 /* Clear ifname before netdev_free() is called. Otherwise, the NetDev object 'n' is
855 * removed from the hashmap 'manager->netdevs'. */
856 netdev
->ifname
= mfree(netdev
->ifname
);
861 log_netdev_debug(netdev
, "loaded \"%s\"", netdev_kind_to_string(netdev
->kind
));
863 r
= netdev_request_to_create(netdev
);
865 return r
; /* netdev_request_to_create() logs internally. */
871 int netdev_load(Manager
*manager
, bool reload
) {
872 _cleanup_strv_free_
char **files
= NULL
;
878 hashmap_clear_with_destructor(manager
->netdevs
, netdev_unref
);
880 r
= conf_files_list_strv(&files
, ".netdev", NULL
, 0, NETWORK_DIRS
);
882 return log_error_errno(r
, "Failed to enumerate netdev files: %m");
884 STRV_FOREACH(f
, files
)
885 (void) netdev_load_one(manager
, *f
);
890 int config_parse_netdev_kind(
892 const char *filename
,
895 unsigned section_line
,
902 NetDevKind k
, *kind
= data
;
908 k
= netdev_kind_from_string(rvalue
);
910 log_syntax(unit
, LOG_WARNING
, filename
, line
, k
, "Failed to parse netdev kind, ignoring assignment: %s", rvalue
);
914 if (*kind
!= _NETDEV_KIND_INVALID
&& *kind
!= k
) {
915 log_syntax(unit
, LOG_WARNING
, filename
, line
, 0,
916 "Specified netdev kind is different from the previous value '%s', ignoring assignment: %s",
917 netdev_kind_to_string(*kind
), rvalue
);
926 int config_parse_netdev_hw_addr(
928 const char *filename
,
931 unsigned section_line
,
938 struct hw_addr_data
*hw_addr
= data
;
943 if (streq(rvalue
, "none")) {
944 *hw_addr
= HW_ADDR_NONE
;
948 return config_parse_hw_addr(unit
, filename
, line
, section
, section_line
, lvalue
, ltype
, rvalue
, data
, userdata
);