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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include "sd-netlink.h"
#include "conf-parser.h"
#include "ether-addr-util.h"
#include "list.h"
#include "log-link.h"
#include "networkd-link.h"
#include "time-util.h"
/* Special hardware address value to suppress generating persistent hardware address for the netdev. */
#define HW_ADDR_NONE ((struct hw_addr_data) { .length = 1, })
#define NETDEV_COMMON_SECTIONS "Match\0NetDev\0"
/* This is the list of known sections. We need to ignore them in the initial parsing phase. */
#define NETDEV_OTHER_SECTIONS \
"-BareUDP\0" \
"-BatmanAdvanced\0" \
"-Bond\0" \
"-Bridge\0" \
"-FooOverUDP\0" \
"-GENEVE\0" \
"-IPoIB\0" \
"-IPVLAN\0" \
"-IPVTAP\0" \
"-L2TP\0" \
"-L2TPSession\0" \
"-MACsec\0" \
"-MACsecReceiveAssociation\0" \
"-MACsecReceiveChannel\0" \
"-MACsecTransmitAssociation\0" \
"-MACVLAN\0" \
"-MACVTAP\0" \
"-Peer\0" \
"-Tap\0" \
"-Tun\0" \
"-Tunnel\0" \
"-VLAN\0" \
"-VRF\0" \
"-VXCAN\0" \
"-VXLAN\0" \
"-WLAN\0" \
"-WireGuard\0" \
"-WireGuardPeer\0" \
"-Xfrm\0"
typedef enum NetDevKind {
NETDEV_KIND_BAREUDP,
NETDEV_KIND_BATADV,
NETDEV_KIND_BOND,
NETDEV_KIND_BRIDGE,
NETDEV_KIND_DUMMY,
NETDEV_KIND_ERSPAN,
NETDEV_KIND_FOU,
NETDEV_KIND_GENEVE,
NETDEV_KIND_GRE,
NETDEV_KIND_GRETAP,
NETDEV_KIND_IFB,
NETDEV_KIND_IP6GRE,
NETDEV_KIND_IP6GRETAP,
NETDEV_KIND_IP6TNL,
NETDEV_KIND_IPIP,
NETDEV_KIND_IPOIB,
NETDEV_KIND_IPVLAN,
NETDEV_KIND_IPVTAP,
NETDEV_KIND_L2TP,
NETDEV_KIND_MACSEC,
NETDEV_KIND_MACVLAN,
NETDEV_KIND_MACVTAP,
NETDEV_KIND_NETDEVSIM,
NETDEV_KIND_NLMON,
NETDEV_KIND_SIT,
NETDEV_KIND_TAP,
NETDEV_KIND_TUN,
NETDEV_KIND_VCAN,
NETDEV_KIND_VETH,
NETDEV_KIND_VLAN,
NETDEV_KIND_VRF,
NETDEV_KIND_VTI,
NETDEV_KIND_VTI6,
NETDEV_KIND_VXCAN,
NETDEV_KIND_VXLAN,
NETDEV_KIND_WIREGUARD,
NETDEV_KIND_WLAN,
NETDEV_KIND_XFRM,
_NETDEV_KIND_MAX,
_NETDEV_KIND_TUNNEL, /* Used by config_parse_stacked_netdev() */
_NETDEV_KIND_INVALID = -EINVAL,
} NetDevKind;
typedef enum NetDevState {
NETDEV_STATE_LOADING,
NETDEV_STATE_FAILED,
NETDEV_STATE_CREATING,
NETDEV_STATE_READY,
NETDEV_STATE_LINGER,
_NETDEV_STATE_MAX,
_NETDEV_STATE_INVALID = -EINVAL,
} NetDevState;
typedef enum NetDevCreateType {
NETDEV_CREATE_INDEPENDENT,
NETDEV_CREATE_STACKED,
_NETDEV_CREATE_MAX,
_NETDEV_CREATE_INVALID = -EINVAL,
} NetDevCreateType;
typedef struct Manager Manager;
typedef struct Condition Condition;
typedef struct NetDev {
Manager *manager;
unsigned n_ref;
char *filename;
LIST_HEAD(Condition, conditions);
NetDevState state;
NetDevKind kind;
char *description;
char *ifname;
struct hw_addr_data hw_addr;
uint32_t mtu;
int ifindex;
} NetDev;
typedef struct NetDevVTable {
/* How much memory does an object of this unit type need */
size_t object_size;
/* Config file sections this netdev kind understands, separated
* by NUL chars */
const char *sections;
/* This should reset all type-specific variables. This should
* not allocate memory, and is called with zero-initialized
* data. It should hence only initialize variables that need
* to be set != 0. */
void (*init)(NetDev *n);
/* This is called when the interface is removed. */
void (*drop)(NetDev *n);
/* This should free all kind-specific variables. It should be
* idempotent. */
void (*done)(NetDev *n);
/* fill in message to create netdev */
int (*fill_message_create)(NetDev *netdev, Link *link, sd_netlink_message *message);
/* specifies if netdev is independent, or a master device or a stacked device */
NetDevCreateType create_type;
/* This is used for stacked netdev. Return true when the underlying link is ready. */
int (*is_ready_to_create)(NetDev *netdev, Link *link);
/* create netdev, if not done via rtnl */
int (*create)(NetDev *netdev);
/* perform additional configuration after netdev has been createad */
int (*post_create)(NetDev *netdev, Link *link);
/* verify that compulsory configuration options were specified */
int (*config_verify)(NetDev *netdev, const char *filename);
/* expected iftype, e.g. ARPHRD_ETHER. */
uint16_t iftype;
/* Generate MAC address when MACAddress= is not specified. */
bool generate_mac;
/* When assigning ifindex to the netdev, skip to check if the netdev kind matches. */
bool skip_netdev_kind_check;
} NetDevVTable;
extern const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX];
#define NETDEV_VTABLE(n) ((n)->kind != _NETDEV_KIND_INVALID ? netdev_vtable[(n)->kind] : NULL)
/* For casting a netdev into the various netdev kinds */
#define DEFINE_NETDEV_CAST(UPPERCASE, MixedCase) \
static inline MixedCase* UPPERCASE(NetDev *n) { \
if (_unlikely_(!n || \
n->kind != NETDEV_KIND_##UPPERCASE) || \
n->state == _NETDEV_STATE_INVALID) \
return NULL; \
\
return (MixedCase*) n; \
}
/* For casting the various netdev kinds into a netdev */
#define NETDEV(n) (&(n)->meta)
int netdev_load(Manager *manager, bool reload);
int netdev_load_one(Manager *manager, const char *filename);
void netdev_drop(NetDev *netdev);
void netdev_enter_failed(NetDev *netdev);
NetDev *netdev_unref(NetDev *netdev);
NetDev *netdev_ref(NetDev *netdev);
DEFINE_TRIVIAL_DESTRUCTOR(netdev_destroy_callback, NetDev, netdev_unref);
DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
bool netdev_is_managed(NetDev *netdev);
int netdev_get(Manager *manager, const char *name, NetDev **ret);
int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *newlink);
int netdev_generate_hw_addr(NetDev *netdev, Link *link, const char *name,
const struct hw_addr_data *hw_addr, struct hw_addr_data *ret);
int link_request_stacked_netdev(Link *link, NetDev *netdev);
const char *netdev_kind_to_string(NetDevKind d) _const_;
NetDevKind netdev_kind_from_string(const char *d) _pure_;
static inline NetDevCreateType netdev_get_create_type(NetDev *netdev) {
assert(netdev);
assert(NETDEV_VTABLE(netdev));
return NETDEV_VTABLE(netdev)->create_type;
}
CONFIG_PARSER_PROTOTYPE(config_parse_netdev_kind);
CONFIG_PARSER_PROTOTYPE(config_parse_netdev_hw_addr);
/* gperf */
const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
/* Macros which append INTERFACE= to the message */
#define log_netdev_full_errno_zerook(netdev, level, error, ...) \
({ \
const NetDev *_n = (netdev); \
log_interface_full_errno_zerook(_n ? _n->ifname : NULL, level, error, __VA_ARGS__); \
})
#define log_netdev_full_errno(netdev, level, error, ...) \
({ \
int _error = (error); \
ASSERT_NON_ZERO(_error); \
log_netdev_full_errno_zerook(netdev, level, _error, __VA_ARGS__); \
})
#define log_netdev_full(netdev, level, ...) (void) log_netdev_full_errno_zerook(netdev, level, 0, __VA_ARGS__)
#define log_netdev_debug(netdev, ...) log_netdev_full(netdev, LOG_DEBUG, __VA_ARGS__)
#define log_netdev_info(netdev, ...) log_netdev_full(netdev, LOG_INFO, __VA_ARGS__)
#define log_netdev_notice(netdev, ...) log_netdev_full(netdev, LOG_NOTICE, __VA_ARGS__)
#define log_netdev_warning(netdev, ...) log_netdev_full(netdev, LOG_WARNING, __VA_ARGS__)
#define log_netdev_error(netdev, ...) log_netdev_full(netdev, LOG_ERR, __VA_ARGS__)
#define log_netdev_debug_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_DEBUG, error, __VA_ARGS__)
#define log_netdev_info_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_INFO, error, __VA_ARGS__)
#define log_netdev_notice_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_NOTICE, error, __VA_ARGS__)
#define log_netdev_warning_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_WARNING, error, __VA_ARGS__)
#define log_netdev_error_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_ERR, error, __VA_ARGS__)
#define LOG_NETDEV_MESSAGE(netdev, fmt, ...) "MESSAGE=%s: " fmt, (netdev)->ifname, ##__VA_ARGS__
#define LOG_NETDEV_INTERFACE(netdev) "INTERFACE=%s", (netdev)->ifname
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