Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 261 insertions, 0 deletions

diff --git a/src/network/netdev/netdev.h b/src/network/netdev/netdev.h
new file mode 100644
index 0000000..cb8cc8c
--- /dev/null
+++ b/src/network/netdev/netdev.h
@@ -0,0 +1,261 @@
+/* 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) {                 \
+                assert(n);                                              \
+                assert(n->kind == NETDEV_KIND_##UPPERCASE);             \
+                assert(n->state < _NETDEV_STATE_MAX);                   \
+                                                                        \
+                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