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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "sd-netlink.h"
#include "list.h"
#include "time-util.h"
typedef struct netdev_join_callback netdev_join_callback;
typedef struct Link Link;
struct netdev_join_callback {
sd_netlink_message_handler_t callback;
Link *link;
LIST_FIELDS(netdev_join_callback, callbacks);
};
typedef enum NetDevKind {
NETDEV_KIND_BRIDGE,
NETDEV_KIND_BOND,
NETDEV_KIND_VLAN,
NETDEV_KIND_MACVLAN,
NETDEV_KIND_MACVTAP,
NETDEV_KIND_IPVLAN,
NETDEV_KIND_VXLAN,
NETDEV_KIND_IPIP,
NETDEV_KIND_GRE,
NETDEV_KIND_GRETAP,
NETDEV_KIND_IP6GRE,
NETDEV_KIND_IP6GRETAP,
NETDEV_KIND_SIT,
NETDEV_KIND_VETH,
NETDEV_KIND_VTI,
NETDEV_KIND_VTI6,
NETDEV_KIND_IP6TNL,
NETDEV_KIND_DUMMY,
NETDEV_KIND_TUN,
NETDEV_KIND_TAP,
NETDEV_KIND_VRF,
NETDEV_KIND_VCAN,
NETDEV_KIND_GENEVE,
NETDEV_KIND_VXCAN,
NETDEV_KIND_WIREGUARD,
_NETDEV_KIND_MAX,
_NETDEV_KIND_INVALID = -1
} NetDevKind;
typedef enum NetDevState {
NETDEV_STATE_FAILED,
NETDEV_STATE_CREATING,
NETDEV_STATE_READY,
NETDEV_STATE_LINGER,
_NETDEV_STATE_MAX,
_NETDEV_STATE_INVALID = -1,
} NetDevState;
typedef enum NetDevCreateType {
NETDEV_CREATE_INDEPENDENT,
NETDEV_CREATE_MASTER,
NETDEV_CREATE_STACKED,
_NETDEV_CREATE_MAX,
_NETDEV_CREATE_INVALID = -1,
} NetDevCreateType;
typedef struct Manager Manager;
typedef struct Condition Condition;
typedef struct NetDev {
Manager *manager;
int n_ref;
char *filename;
Condition *match_host;
Condition *match_virt;
Condition *match_kernel_cmdline;
Condition *match_kernel_version;
Condition *match_arch;
NetDevState state;
NetDevKind kind;
char *description;
char *ifname;
struct ether_addr *mac;
size_t mtu;
int ifindex;
LIST_HEAD(netdev_join_callback, callbacks);
} 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 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;
/* 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, sd_netlink_message *message);
/* verify that compulsory configuration options were specified */
int (*config_verify)(NetDev *netdev, const char *filename);
} 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)) \
return NULL; \
\
return (MixedCase*) n; \
}
/* For casting the various netdev kinds into a netdev */
#define NETDEV(n) (&(n)->meta)
int netdev_load(Manager *manager);
void netdev_drop(NetDev *netdev);
NetDev *netdev_unref(NetDev *netdev);
NetDev *netdev_ref(NetDev *netdev);
DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
#define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
int netdev_get(Manager *manager, const char *name, NetDev **ret);
int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *newlink);
int netdev_enslave(NetDev *netdev, Link *link, sd_netlink_message_handler_t callback);
int netdev_get_mac(const char *ifname, struct ether_addr **ret);
int netdev_join(NetDev *netdev, Link *link, sd_netlink_message_handler_t cb);
const char *netdev_kind_to_string(NetDevKind d) _const_;
NetDevKind netdev_kind_from_string(const char *d) _pure_;
int config_parse_netdev_kind(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
/* 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(netdev, level, error, ...) \
({ \
const NetDev *_n = (netdev); \
_n ? log_object_internal(level, error, __FILE__, __LINE__, __func__, "INTERFACE=", _n->ifname, NULL, NULL, ##__VA_ARGS__) : \
log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
})
#define log_netdev_debug(netdev, ...) log_netdev_full(netdev, LOG_DEBUG, 0, ##__VA_ARGS__)
#define log_netdev_info(netdev, ...) log_netdev_full(netdev, LOG_INFO, 0, ##__VA_ARGS__)
#define log_netdev_notice(netdev, ...) log_netdev_full(netdev, LOG_NOTICE, 0, ##__VA_ARGS__)
#define log_netdev_warning(netdev, ...) log_netdev_full(netdev, LOG_WARNING, 0, ## __VA_ARGS__)
#define log_netdev_error(netdev, ...) log_netdev_full(netdev, LOG_ERR, 0, ##__VA_ARGS__)
#define log_netdev_debug_errno(netdev, error, ...) log_netdev_full(netdev, LOG_DEBUG, error, ##__VA_ARGS__)
#define log_netdev_info_errno(netdev, error, ...) log_netdev_full(netdev, LOG_INFO, error, ##__VA_ARGS__)
#define log_netdev_notice_errno(netdev, error, ...) log_netdev_full(netdev, LOG_NOTICE, error, ##__VA_ARGS__)
#define log_netdev_warning_errno(netdev, error, ...) log_netdev_full(netdev, LOG_WARNING, error, ##__VA_ARGS__)
#define log_netdev_error_errno(netdev, error, ...) log_netdev_full(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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