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-rw-r--r--src/network/netdev/netdev.h262
1 files changed, 262 insertions, 0 deletions
diff --git a/src/network/netdev/netdev.h b/src/network/netdev/netdev.h
new file mode 100644
index 0000000..49eadbb
--- /dev/null
+++ b/src/network/netdev/netdev.h
@@ -0,0 +1,262 @@
+/* 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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