mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 08:56:15 +09:00
117843fe95
The macro used to return NULL if input was NULL or had the wrong type. Now it asserts that input is nonnull and it has the expected type. There are a few places where a missing or mismatched type was OK, but in a majority of places, we would do both of the asserts. In various places we'd only do one, but that was by ommission/mistake. So moving the asserts into the macro allows us to save some lines.
262 lines
10 KiB
C
262 lines
10 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "sd-netlink.h"
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#include "conf-parser.h"
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#include "ether-addr-util.h"
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#include "list.h"
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#include "log-link.h"
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#include "networkd-link.h"
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#include "time-util.h"
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/* Special hardware address value to suppress generating persistent hardware address for the netdev. */
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#define HW_ADDR_NONE ((struct hw_addr_data) { .length = 1, })
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#define NETDEV_COMMON_SECTIONS "Match\0NetDev\0"
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/* This is the list of known sections. We need to ignore them in the initial parsing phase. */
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#define NETDEV_OTHER_SECTIONS \
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"-BareUDP\0" \
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"-BatmanAdvanced\0" \
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"-Bond\0" \
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"-Bridge\0" \
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"-FooOverUDP\0" \
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"-GENEVE\0" \
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"-IPoIB\0" \
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"-IPVLAN\0" \
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"-IPVTAP\0" \
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"-L2TP\0" \
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"-L2TPSession\0" \
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"-MACsec\0" \
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"-MACsecReceiveAssociation\0" \
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"-MACsecReceiveChannel\0" \
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"-MACsecTransmitAssociation\0" \
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"-MACVLAN\0" \
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"-MACVTAP\0" \
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"-Peer\0" \
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"-Tap\0" \
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"-Tun\0" \
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"-Tunnel\0" \
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"-VLAN\0" \
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"-VRF\0" \
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"-VXCAN\0" \
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"-VXLAN\0" \
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"-WLAN\0" \
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"-WireGuard\0" \
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"-WireGuardPeer\0" \
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"-Xfrm\0"
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typedef enum NetDevKind {
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NETDEV_KIND_BAREUDP,
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NETDEV_KIND_BATADV,
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NETDEV_KIND_BOND,
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NETDEV_KIND_BRIDGE,
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NETDEV_KIND_DUMMY,
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NETDEV_KIND_ERSPAN,
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NETDEV_KIND_FOU,
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NETDEV_KIND_GENEVE,
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NETDEV_KIND_GRE,
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NETDEV_KIND_GRETAP,
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NETDEV_KIND_IFB,
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NETDEV_KIND_IP6GRE,
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NETDEV_KIND_IP6GRETAP,
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NETDEV_KIND_IP6TNL,
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NETDEV_KIND_IPIP,
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NETDEV_KIND_IPOIB,
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NETDEV_KIND_IPVLAN,
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NETDEV_KIND_IPVTAP,
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NETDEV_KIND_L2TP,
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NETDEV_KIND_MACSEC,
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NETDEV_KIND_MACVLAN,
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NETDEV_KIND_MACVTAP,
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NETDEV_KIND_NETDEVSIM,
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NETDEV_KIND_NLMON,
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NETDEV_KIND_SIT,
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NETDEV_KIND_TAP,
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NETDEV_KIND_TUN,
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NETDEV_KIND_VCAN,
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NETDEV_KIND_VETH,
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NETDEV_KIND_VLAN,
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NETDEV_KIND_VRF,
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NETDEV_KIND_VTI,
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NETDEV_KIND_VTI6,
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NETDEV_KIND_VXCAN,
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NETDEV_KIND_VXLAN,
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NETDEV_KIND_WIREGUARD,
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NETDEV_KIND_WLAN,
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NETDEV_KIND_XFRM,
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_NETDEV_KIND_MAX,
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_NETDEV_KIND_TUNNEL, /* Used by config_parse_stacked_netdev() */
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_NETDEV_KIND_INVALID = -EINVAL,
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} NetDevKind;
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typedef enum NetDevState {
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NETDEV_STATE_LOADING,
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NETDEV_STATE_FAILED,
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NETDEV_STATE_CREATING,
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NETDEV_STATE_READY,
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NETDEV_STATE_LINGER,
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_NETDEV_STATE_MAX,
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_NETDEV_STATE_INVALID = -EINVAL,
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} NetDevState;
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typedef enum NetDevCreateType {
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NETDEV_CREATE_INDEPENDENT,
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NETDEV_CREATE_STACKED,
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_NETDEV_CREATE_MAX,
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_NETDEV_CREATE_INVALID = -EINVAL,
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} NetDevCreateType;
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typedef struct Manager Manager;
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typedef struct Condition Condition;
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typedef struct NetDev {
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Manager *manager;
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unsigned n_ref;
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char *filename;
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LIST_HEAD(Condition, conditions);
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NetDevState state;
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NetDevKind kind;
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char *description;
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char *ifname;
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struct hw_addr_data hw_addr;
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uint32_t mtu;
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int ifindex;
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} NetDev;
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typedef struct NetDevVTable {
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/* How much memory does an object of this unit type need */
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size_t object_size;
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/* Config file sections this netdev kind understands, separated
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* by NUL chars */
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const char *sections;
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/* This should reset all type-specific variables. This should
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* not allocate memory, and is called with zero-initialized
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* data. It should hence only initialize variables that need
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* to be set != 0. */
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void (*init)(NetDev *n);
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/* This is called when the interface is removed. */
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void (*drop)(NetDev *n);
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/* This should free all kind-specific variables. It should be
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* idempotent. */
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void (*done)(NetDev *n);
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/* fill in message to create netdev */
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int (*fill_message_create)(NetDev *netdev, Link *link, sd_netlink_message *message);
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/* specifies if netdev is independent, or a master device or a stacked device */
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NetDevCreateType create_type;
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/* This is used for stacked netdev. Return true when the underlying link is ready. */
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int (*is_ready_to_create)(NetDev *netdev, Link *link);
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/* create netdev, if not done via rtnl */
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int (*create)(NetDev *netdev);
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/* perform additional configuration after netdev has been createad */
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int (*post_create)(NetDev *netdev, Link *link);
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/* verify that compulsory configuration options were specified */
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int (*config_verify)(NetDev *netdev, const char *filename);
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/* expected iftype, e.g. ARPHRD_ETHER. */
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uint16_t iftype;
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/* Generate MAC address when MACAddress= is not specified. */
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bool generate_mac;
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/* When assigning ifindex to the netdev, skip to check if the netdev kind matches. */
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bool skip_netdev_kind_check;
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} NetDevVTable;
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extern const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX];
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#define NETDEV_VTABLE(n) ((n)->kind != _NETDEV_KIND_INVALID ? netdev_vtable[(n)->kind] : NULL)
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/* For casting a netdev into the various netdev kinds */
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#define DEFINE_NETDEV_CAST(UPPERCASE, MixedCase) \
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static inline MixedCase* UPPERCASE(NetDev *n) { \
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assert(n); \
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assert(n->kind == NETDEV_KIND_##UPPERCASE); \
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assert(n->state < _NETDEV_STATE_MAX); \
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\
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return (MixedCase*) n; \
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}
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/* For casting the various netdev kinds into a netdev */
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#define NETDEV(n) (&(n)->meta)
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int netdev_load(Manager *manager, bool reload);
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int netdev_load_one(Manager *manager, const char *filename);
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void netdev_drop(NetDev *netdev);
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void netdev_enter_failed(NetDev *netdev);
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NetDev *netdev_unref(NetDev *netdev);
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NetDev *netdev_ref(NetDev *netdev);
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DEFINE_TRIVIAL_DESTRUCTOR(netdev_destroy_callback, NetDev, netdev_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
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bool netdev_is_managed(NetDev *netdev);
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int netdev_get(Manager *manager, const char *name, NetDev **ret);
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int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *newlink);
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int netdev_generate_hw_addr(NetDev *netdev, Link *link, const char *name,
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const struct hw_addr_data *hw_addr, struct hw_addr_data *ret);
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int link_request_stacked_netdev(Link *link, NetDev *netdev);
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const char *netdev_kind_to_string(NetDevKind d) _const_;
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NetDevKind netdev_kind_from_string(const char *d) _pure_;
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static inline NetDevCreateType netdev_get_create_type(NetDev *netdev) {
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assert(netdev);
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assert(NETDEV_VTABLE(netdev));
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return NETDEV_VTABLE(netdev)->create_type;
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}
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CONFIG_PARSER_PROTOTYPE(config_parse_netdev_kind);
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CONFIG_PARSER_PROTOTYPE(config_parse_netdev_hw_addr);
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/* gperf */
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const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
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/* Macros which append INTERFACE= to the message */
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#define log_netdev_full_errno_zerook(netdev, level, error, ...) \
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({ \
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const NetDev *_n = (netdev); \
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log_interface_full_errno_zerook(_n ? _n->ifname : NULL, level, error, __VA_ARGS__); \
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})
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#define log_netdev_full_errno(netdev, level, error, ...) \
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({ \
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int _error = (error); \
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ASSERT_NON_ZERO(_error); \
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log_netdev_full_errno_zerook(netdev, level, _error, __VA_ARGS__); \
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})
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#define log_netdev_full(netdev, level, ...) (void) log_netdev_full_errno_zerook(netdev, level, 0, __VA_ARGS__)
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#define log_netdev_debug(netdev, ...) log_netdev_full(netdev, LOG_DEBUG, __VA_ARGS__)
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#define log_netdev_info(netdev, ...) log_netdev_full(netdev, LOG_INFO, __VA_ARGS__)
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#define log_netdev_notice(netdev, ...) log_netdev_full(netdev, LOG_NOTICE, __VA_ARGS__)
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#define log_netdev_warning(netdev, ...) log_netdev_full(netdev, LOG_WARNING, __VA_ARGS__)
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#define log_netdev_error(netdev, ...) log_netdev_full(netdev, LOG_ERR, __VA_ARGS__)
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#define log_netdev_debug_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_DEBUG, error, __VA_ARGS__)
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#define log_netdev_info_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_INFO, error, __VA_ARGS__)
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#define log_netdev_notice_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_NOTICE, error, __VA_ARGS__)
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#define log_netdev_warning_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_WARNING, error, __VA_ARGS__)
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#define log_netdev_error_errno(netdev, error, ...) log_netdev_full_errno(netdev, LOG_ERR, error, __VA_ARGS__)
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#define LOG_NETDEV_MESSAGE(netdev, fmt, ...) "MESSAGE=%s: " fmt, (netdev)->ifname, ##__VA_ARGS__
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#define LOG_NETDEV_INTERFACE(netdev) "INTERFACE=%s", (netdev)->ifname
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