| /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2014 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 <stddef.h> |
| #include <stdint.h> |
| #include <sys/socket.h> |
| #include <linux/netlink.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/in6.h> |
| #include <linux/veth.h> |
| #include <linux/if_bridge.h> |
| #include <linux/if_addr.h> |
| #include <linux/if.h> |
| |
| #include <linux/ip.h> |
| #include <linux/if_tunnel.h> |
| |
| #include "macro.h" |
| #include "util.h" |
| |
| #include "rtnl-types.h" |
| #include "missing.h" |
| |
| static const NLTypeSystem rtnl_link_type_system; |
| |
| static const NLType rtnl_link_info_data_veth_types[VETH_INFO_MAX + 1] = { |
| [VETH_INFO_PEER] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, |
| }; |
| |
| |
| static const NLType rtnl_link_info_data_macvlan_types[IFLA_MACVLAN_MAX + 1] = { |
| [IFLA_MACVLAN_MODE] = { .type = NLA_U32 }, |
| [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 }, |
| }; |
| |
| static const NLType rtnl_link_info_data_bridge_types[IFLA_BRIDGE_MAX + 1] = { |
| [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 }, |
| [IFLA_BRIDGE_MODE] = { .type = NLA_U16 }, |
| /* |
| [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY, |
| .len = sizeof(struct bridge_vlan_info), }, |
| */ |
| }; |
| |
| static const NLType rtnl_link_info_data_vlan_types[IFLA_VLAN_MAX + 1] = { |
| [IFLA_VLAN_ID] = { .type = NLA_U16 }, |
| /* |
| [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) }, |
| [IFLA_VLAN_EGRESS_QOS] = { .type = NLA_NESTED }, |
| [IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED }, |
| */ |
| [IFLA_VLAN_PROTOCOL] = { .type = NLA_U16 }, |
| }; |
| |
| static const NLType rtnl_link_info_data_bond_types[IFLA_BOND_MAX + 1] = { |
| [IFLA_BOND_MODE] = { .type = NLA_U8 }, |
| [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, |
| #ifdef IFLA_BOND_MIIMON |
| [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, |
| [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, |
| [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, |
| [IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 }, |
| [IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 }, |
| /* |
| [IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED }, |
| */ |
| [IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 }, |
| [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 }, |
| [IFLA_BOND_PRIMARY] = { .type = NLA_U32 }, |
| [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 }, |
| [IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 }, |
| [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 }, |
| [IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 }, |
| [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 }, |
| [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, |
| [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, |
| [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, |
| [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, |
| [IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 }, |
| [IFLA_BOND_AD_SELECT] = { .type = NLA_U8 }, |
| /* |
| [IFLA_BOND_AD_INFO] = { .type = NLA_NESTED }, |
| */ |
| #endif |
| }; |
| |
| static const NLType rtnl_link_info_data_iptun_types[IFLA_IPTUN_MAX + 1] = { |
| [IFLA_IPTUN_LINK] = { .type = NLA_U32 }, |
| [IFLA_IPTUN_LOCAL] = { .type = NLA_IN_ADDR }, |
| [IFLA_IPTUN_REMOTE] = { .type = NLA_IN_ADDR }, |
| [IFLA_IPTUN_TTL] = { .type = NLA_U8 }, |
| [IFLA_IPTUN_TOS] = { .type = NLA_U8 }, |
| [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 }, |
| [IFLA_IPTUN_FLAGS] = { .type = NLA_U16 }, |
| [IFLA_IPTUN_PROTO] = { .type = NLA_U8 }, |
| [IFLA_IPTUN_6RD_PREFIX] = { .type = NLA_IN_ADDR }, |
| [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NLA_U32 }, |
| [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NLA_U16 }, |
| [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NLA_U16 }, |
| }; |
| |
| typedef enum NLUnionLinkInfoData { |
| NL_UNION_LINK_INFO_DATA_BOND, |
| NL_UNION_LINK_INFO_DATA_BRIDGE, |
| NL_UNION_LINK_INFO_DATA_VLAN, |
| NL_UNION_LINK_INFO_DATA_VETH, |
| NL_UNION_LINK_INFO_DATA_MACVLAN, |
| NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL, |
| NL_UNION_LINK_INFO_DATA_SIT_TUNNEL, |
| _NL_UNION_LINK_INFO_DATA_MAX, |
| _NL_UNION_LINK_INFO_DATA_INVALID = -1 |
| } NLUnionLinkInfoData; |
| |
| const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_; |
| NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_; |
| |
| /* these strings must match the .kind entries in the kernel */ |
| static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_MAX] = { |
| [NL_UNION_LINK_INFO_DATA_BOND] = "bond", |
| [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge", |
| [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan", |
| [NL_UNION_LINK_INFO_DATA_VETH] = "veth", |
| [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan", |
| [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip", |
| [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit", |
| }; |
| |
| DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData); |
| |
| static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_DATA_MAX] = { |
| [NL_UNION_LINK_INFO_DATA_BOND] = { .max = ELEMENTSOF(rtnl_link_info_data_bond_types) - 1, |
| .types = rtnl_link_info_data_bond_types }, |
| [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .max = ELEMENTSOF(rtnl_link_info_data_bridge_types) - 1, |
| .types = rtnl_link_info_data_bridge_types }, |
| [NL_UNION_LINK_INFO_DATA_VLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_vlan_types) - 1, |
| .types = rtnl_link_info_data_vlan_types }, |
| [NL_UNION_LINK_INFO_DATA_VETH] = { .max = ELEMENTSOF(rtnl_link_info_data_veth_types) - 1, |
| .types = rtnl_link_info_data_veth_types }, |
| [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .max = ELEMENTSOF(rtnl_link_info_data_macvlan_types) - 1, |
| .types = rtnl_link_info_data_macvlan_types }, |
| [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1, |
| .types = rtnl_link_info_data_iptun_types }, |
| [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1, |
| .types = rtnl_link_info_data_iptun_types }, |
| }; |
| |
| static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = { |
| .num = _NL_UNION_LINK_INFO_DATA_MAX, |
| .lookup = nl_union_link_info_data_from_string, |
| .type_systems = rtnl_link_info_data_type_systems, |
| .match = IFLA_INFO_KIND, |
| }; |
| |
| static const NLType rtnl_link_info_types[IFLA_INFO_MAX + 1] = { |
| [IFLA_INFO_KIND] = { .type = NLA_STRING }, |
| [IFLA_INFO_DATA] = { .type = NLA_UNION, .type_system_union = &rtnl_link_info_data_type_system_union}, |
| /* |
| [IFLA_INFO_XSTATS], |
| [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
| [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, |
| */ |
| }; |
| |
| static const NLTypeSystem rtnl_link_info_type_system = { |
| .max = ELEMENTSOF(rtnl_link_info_types) - 1, |
| .types = rtnl_link_info_types, |
| }; |
| |
| static const NLType rtnl_link_types[IFLA_MAX + 1] = { |
| [IFLA_ADDRESS] = { .type = NLA_ETHER_ADDR, }, |
| [IFLA_BROADCAST] = { .type = NLA_ETHER_ADDR, }, |
| [IFLA_IFNAME] = { .type = NLA_STRING, .size = IFNAMSIZ - 1, }, |
| [IFLA_MTU] = { .type = NLA_U32 }, |
| [IFLA_LINK] = { .type = NLA_U32 }, |
| /* |
| [IFLA_QDISC], |
| [IFLA_STATS], |
| [IFLA_COST], |
| [IFLA_PRIORITY], |
| */ |
| [IFLA_MASTER] = { .type = NLA_U32 }, |
| /* |
| [IFLA_WIRELESS], |
| [IFLA_PROTINFO], |
| */ |
| [IFLA_TXQLEN] = { .type = NLA_U32 }, |
| /* |
| [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
| */ |
| [IFLA_WEIGHT] = { .type = NLA_U32 }, |
| [IFLA_OPERSTATE] = { .type = NLA_U8 }, |
| [IFLA_LINKMODE] = { .type = NLA_U8 }, |
| [IFLA_LINKINFO] = { .type = NLA_NESTED, .type_system = &rtnl_link_info_type_system }, |
| [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
| [IFLA_IFALIAS] = { .type = NLA_STRING, .size = IFALIASZ - 1 }, |
| /* |
| [IFLA_NUM_VF], |
| [IFLA_VFINFO_LIST] = {. type = NLA_NESTED, }, |
| [IFLA_STATS64], |
| [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
| [IFLA_PORT_SELF] = { .type = NLA_NESTED }, |
| [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
| [IFLA_VF_PORTS], |
| [IFLA_PORT_SELF], |
| [IFLA_AF_SPEC], |
| */ |
| [IFLA_GROUP] = { .type = NLA_U32 }, |
| [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
| [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
| [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
| [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
| [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, |
| [IFLA_CARRIER] = { .type = NLA_U8 }, |
| /* |
| [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN }, |
| */ |
| }; |
| |
| static const NLTypeSystem rtnl_link_type_system = { |
| .max = ELEMENTSOF(rtnl_link_types) - 1, |
| .types = rtnl_link_types, |
| }; |
| |
| static const NLType rtnl_address_types[IFA_MAX + 1] = { |
| [IFA_ADDRESS] = { .type = NLA_IN_ADDR }, |
| [IFA_LOCAL] = { .type = NLA_IN_ADDR }, |
| [IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 }, |
| [IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */ |
| [IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) }, |
| /* |
| [IFA_ANYCAST], |
| [IFA_MULTICAST], |
| */ |
| #ifdef IFA_FLAGS |
| [IFA_FLAGS] = { .type = NLA_U32 }, |
| #endif |
| }; |
| |
| static const NLTypeSystem rtnl_address_type_system = { |
| .max = ELEMENTSOF(rtnl_address_types) - 1, |
| .types = rtnl_address_types, |
| }; |
| |
| static const NLType rtnl_route_types[RTA_MAX + 1] = { |
| [RTA_DST] = { .type = NLA_IN_ADDR }, /* 6? */ |
| [RTA_SRC] = { .type = NLA_IN_ADDR }, /* 6? */ |
| [RTA_IIF] = { .type = NLA_U32 }, |
| [RTA_OIF] = { .type = NLA_U32 }, |
| [RTA_GATEWAY] = { .type = NLA_IN_ADDR }, |
| [RTA_PRIORITY] = { .type = NLA_U32 }, |
| [RTA_PREFSRC] = { .type = NLA_IN_ADDR }, /* 6? */ |
| /* |
| [RTA_METRICS] = { .type = NLA_NESTED }, |
| [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) }, |
| */ |
| [RTA_FLOW] = { .type = NLA_U32 }, /* 6? */ |
| /* |
| RTA_CACHEINFO, |
| RTA_TABLE, |
| RTA_MARK, |
| RTA_MFC_STATS, |
| */ |
| }; |
| |
| static const NLTypeSystem rtnl_route_type_system = { |
| .max = ELEMENTSOF(rtnl_route_types) - 1, |
| .types = rtnl_route_types, |
| }; |
| |
| static const NLType rtnl_types[RTM_MAX + 1] = { |
| [NLMSG_ERROR] = { .type = NLA_META, .size = sizeof(struct nlmsgerr) }, |
| [RTM_NEWLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, |
| [RTM_DELLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, |
| [RTM_GETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, |
| [RTM_SETLINK] = { .type = NLA_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, |
| [RTM_NEWADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, |
| [RTM_DELADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, |
| [RTM_GETADDR] = { .type = NLA_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, |
| [RTM_NEWROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, |
| [RTM_DELROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, |
| [RTM_GETROUTE] = { .type = NLA_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, |
| }; |
| |
| const NLTypeSystem rtnl_type_system = { |
| .max = ELEMENTSOF(rtnl_types) - 1, |
| .types = rtnl_types, |
| }; |
| |
| int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) { |
| const NLType *nl_type; |
| |
| assert(ret); |
| |
| if (!type_system) |
| type_system = &rtnl_type_system; |
| |
| assert(type_system->types); |
| |
| if (type > type_system->max) |
| return -ENOTSUP; |
| |
| nl_type = &type_system->types[type]; |
| |
| if (nl_type->type == NLA_UNSPEC) |
| return -ENOTSUP; |
| |
| *ret = nl_type; |
| |
| return 0; |
| } |
| |
| int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) { |
| const NLType *nl_type; |
| int r; |
| |
| assert(ret); |
| |
| r = type_system_get_type(type_system, &nl_type, type); |
| if (r < 0) |
| return r; |
| |
| assert_return(nl_type->type == NLA_NESTED, -EINVAL); |
| |
| assert(nl_type->type_system); |
| |
| *ret = nl_type->type_system; |
| |
| return 0; |
| } |
| |
| int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) { |
| const NLType *nl_type; |
| int r; |
| |
| assert(ret); |
| |
| r = type_system_get_type(type_system, &nl_type, type); |
| if (r < 0) |
| return r; |
| |
| assert_return(nl_type->type == NLA_UNION, -EINVAL); |
| |
| assert(nl_type->type_system_union); |
| |
| *ret = nl_type->type_system_union; |
| |
| return 0; |
| } |
| |
| int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) { |
| int type; |
| |
| assert(type_system_union); |
| assert(type_system_union->lookup); |
| assert(type_system_union->type_systems); |
| assert(ret); |
| assert(key); |
| |
| type = type_system_union->lookup(key); |
| if (type < 0) |
| return -ENOTSUP; |
| |
| assert(type < type_system_union->num); |
| |
| *ret = &type_system_union->type_systems[type]; |
| |
| return 0; |
| } |