/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** 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/>. ***/ #pragma once #include "networkd.h" #include "list.h" typedef struct NetDevVTable NetDevVTable; typedef struct netdev_join_callback netdev_join_callback; struct netdev_join_callback { sd_rtnl_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_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_IP6TNL, NETDEV_KIND_DUMMY, NETDEV_KIND_TUN, NETDEV_KIND_TAP, _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; struct NetDev { Manager *manager; int n_ref; char *filename; Condition *match_host; Condition *match_virt; Condition *match_kernel; 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); }; #include "networkd-netdev-bridge.h" #include "networkd-netdev-bond.h" #include "networkd-netdev-vlan.h" #include "networkd-netdev-macvlan.h" #include "networkd-netdev-ipvlan.h" #include "networkd-netdev-vxlan.h" #include "networkd-netdev-veth.h" #include "networkd-netdev-tunnel.h" #include "networkd-netdev-dummy.h" #include "networkd-netdev-tuntap.h" 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_rtnl_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); /* verify that compulsory configuration options were specified */ int (*config_verify)(NetDev *netdev, const char *filename); }; extern const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX]; #define NETDEV_VTABLE(n) netdev_vtable[(n)->kind] /* For casting a netdev into the various netdev kinds */ #define DEFINE_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) DEFINE_CAST(BRIDGE, Bridge); DEFINE_CAST(BOND, Bond); DEFINE_CAST(VLAN, VLan); DEFINE_CAST(MACVLAN, MacVlan); DEFINE_CAST(IPVLAN, IPVlan); DEFINE_CAST(VXLAN, VxLan); DEFINE_CAST(IPIP, Tunnel); DEFINE_CAST(GRE, Tunnel); DEFINE_CAST(GRETAP, Tunnel); DEFINE_CAST(IP6GRE, Tunnel); DEFINE_CAST(IP6GRETAP, Tunnel); DEFINE_CAST(SIT, Tunnel); DEFINE_CAST(VTI, Tunnel); DEFINE_CAST(IP6TNL, Tunnel); DEFINE_CAST(VETH, Veth); DEFINE_CAST(DUMMY, Dummy); DEFINE_CAST(TUN, TunTap); DEFINE_CAST(TAP, TunTap); 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_rtnl_message *newlink); int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback); int netdev_get_mac(const char *ifname, struct ether_addr **ret); int netdev_join(NetDev *netdev, Link *link, sd_rtnl_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, unsigned length); /* Macros which append INTERFACE= to the message */ #define log_full_netdev(level, netdev, fmt, ...) log_object_internal(level, 0, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%-*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__) #define log_netdev_debug(netdev, ...) log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__) #define log_info_netdev(netdev, ...) log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__) #define log_notice_netdev(netdev, ...) log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__) #define log_warning_netdev(netdev, ...) log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__) #define log_netdev_error(netdev, ...) log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__) #define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__) #define NETDEVIF(netdev) "INTERFACE=%s", netdev->ifname