diff options
Diffstat (limited to 'src/libsystemd/sd-rtnl/rtnl-types.c')
-rw-r--r-- | src/libsystemd/sd-rtnl/rtnl-types.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/src/libsystemd/sd-rtnl/rtnl-types.c b/src/libsystemd/sd-rtnl/rtnl-types.c new file mode 100644 index 0000000000..936073e49c --- /dev/null +++ b/src/libsystemd/sd-rtnl/rtnl-types.c @@ -0,0 +1,356 @@ +/*-*- 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 "macro.h" +#include "util.h" + +#include "rtnl-types.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 +}; + +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_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_; + +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", +}; + +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_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 }, +}; + +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_ANYCAST], + [IFA_CACHEINFO] = { .len = sizeof(struct ifa_cacheinfo) }, + [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; +} |