diff options
| -rw-r--r-- | include/linux/ipv6.h | 197 | ||||
| -rw-r--r-- | lib/rtnl.c | 119 |
2 files changed, 314 insertions, 2 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h new file mode 100644 index 0000000..7060377 --- /dev/null +++ b/include/linux/ipv6.h @@ -0,0 +1,197 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_IPV6_H +#define _UAPI_IPV6_H + +#include <linux/libc-compat.h> +#include <linux/types.h> +#include <linux/in6.h> +#include <asm/byteorder.h> + +/* The latest drafts declared increase in minimal mtu up to 1280. */ + +#define IPV6_MIN_MTU 1280 + +/* + * Advanced API + * source interface/address selection, source routing, etc... + * *under construction* + */ + +#if __UAPI_DEF_IN6_PKTINFO +struct in6_pktinfo { + struct in6_addr ipi6_addr; + int ipi6_ifindex; +}; +#endif + +#if __UAPI_DEF_IP6_MTUINFO +struct ip6_mtuinfo { + struct sockaddr_in6 ip6m_addr; + __u32 ip6m_mtu; +}; +#endif + +struct in6_ifreq { + struct in6_addr ifr6_addr; + __u32 ifr6_prefixlen; + int ifr6_ifindex; +}; + +#define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */ +#define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */ +#define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */ +#define IPV6_SRCRT_TYPE_3 3 /* RPL Segment Routing with IPv6 */ +#define IPV6_SRCRT_TYPE_4 4 /* Segment Routing with IPv6 */ + +/* + * routing header + */ +struct ipv6_rt_hdr { + __u8 nexthdr; + __u8 hdrlen; + __u8 type; + __u8 segments_left; + + /* + * type specific data + * variable length field + */ +}; + + +struct ipv6_opt_hdr { + __u8 nexthdr; + __u8 hdrlen; + /* + * TLV encoded option data follows. + */ +} __attribute__((packed)); /* required for some archs */ + +#define ipv6_destopt_hdr ipv6_opt_hdr +#define ipv6_hopopt_hdr ipv6_opt_hdr + +/* Router Alert option values (RFC2711) */ +#define IPV6_OPT_ROUTERALERT_MLD 0x0000 /* MLD(RFC2710) */ + +/* + * routing header type 0 (used in cmsghdr struct) + */ + +struct rt0_hdr { + struct ipv6_rt_hdr rt_hdr; + __u32 reserved; + struct in6_addr addr[0]; + +#define rt0_type rt_hdr.type +}; + +/* + * routing header type 2 + */ + +struct rt2_hdr { + struct ipv6_rt_hdr rt_hdr; + __u32 reserved; + struct in6_addr addr; + +#define rt2_type rt_hdr.type +}; + +/* + * home address option in destination options header + */ + +struct ipv6_destopt_hao { + __u8 type; + __u8 length; + struct in6_addr addr; +} __attribute__((packed)); + +/* + * IPv6 fixed header + * + * BEWARE, it is incorrect. The first 4 bits of flow_lbl + * are glued to priority now, forming "class". + */ + +struct ipv6hdr { +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u8 priority:4, + version:4; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u8 version:4, + priority:4; +#else +#error "Please fix <asm/byteorder.h>" +#endif + __u8 flow_lbl[3]; + + __be16 payload_len; + __u8 nexthdr; + __u8 hop_limit; + + struct in6_addr saddr; + struct in6_addr daddr; +}; + + +/* index values for the variables in ipv6_devconf */ +enum { + DEVCONF_FORWARDING = 0, + DEVCONF_HOPLIMIT, + DEVCONF_MTU6, + DEVCONF_ACCEPT_RA, + DEVCONF_ACCEPT_REDIRECTS, + DEVCONF_AUTOCONF, + DEVCONF_DAD_TRANSMITS, + DEVCONF_RTR_SOLICITS, + DEVCONF_RTR_SOLICIT_INTERVAL, + DEVCONF_RTR_SOLICIT_DELAY, + DEVCONF_USE_TEMPADDR, + DEVCONF_TEMP_VALID_LFT, + DEVCONF_TEMP_PREFERED_LFT, + DEVCONF_REGEN_MAX_RETRY, + DEVCONF_MAX_DESYNC_FACTOR, + DEVCONF_MAX_ADDRESSES, + DEVCONF_FORCE_MLD_VERSION, + DEVCONF_ACCEPT_RA_DEFRTR, + DEVCONF_ACCEPT_RA_PINFO, + DEVCONF_ACCEPT_RA_RTR_PREF, + DEVCONF_RTR_PROBE_INTERVAL, + DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, + DEVCONF_PROXY_NDP, + DEVCONF_OPTIMISTIC_DAD, + DEVCONF_ACCEPT_SOURCE_ROUTE, + DEVCONF_MC_FORWARDING, + DEVCONF_DISABLE_IPV6, + DEVCONF_ACCEPT_DAD, + DEVCONF_FORCE_TLLAO, + DEVCONF_NDISC_NOTIFY, + DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL, + DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL, + DEVCONF_SUPPRESS_FRAG_NDISC, + DEVCONF_ACCEPT_RA_FROM_LOCAL, + DEVCONF_USE_OPTIMISTIC, + DEVCONF_ACCEPT_RA_MTU, + DEVCONF_STABLE_SECRET, + DEVCONF_USE_OIF_ADDRS_ONLY, + DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT, + DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN, + DEVCONF_DROP_UNICAST_IN_L2_MULTICAST, + DEVCONF_DROP_UNSOLICITED_NA, + DEVCONF_KEEP_ADDR_ON_DOWN, + DEVCONF_RTR_SOLICIT_MAX_INTERVAL, + DEVCONF_SEG6_ENABLED, + DEVCONF_SEG6_REQUIRE_HMAC, + DEVCONF_ENHANCED_DAD, + DEVCONF_ADDR_GEN_MODE, + DEVCONF_DISABLE_POLICY, + DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN, + DEVCONF_NDISC_TCLASS, + DEVCONF_RPL_SEG_ENABLED, + DEVCONF_RA_DEFRTR_METRIC, + DEVCONF_MAX +}; + + +#endif /* _UAPI_IPV6_H */ @@ -47,6 +47,7 @@ limitations under the License. #include <linux/if_addrlabel.h> #include <linux/if_bridge.h> #include <linux/netconf.h> +#include <linux/ipv6.h> #include "ucode/module.h" @@ -589,11 +590,124 @@ static const uc_nl_attr_spec_t route_encap_seg6_attrs[] = { { SEG6_IPTUNNEL_SRH, "srh", DT_SRH, 0, NULL }, }; -static const uc_nl_nested_spec_t link_attrs_af_spec_inet6_rta = { +#define IPV4_DEVCONF_ENTRY(name) ((void *)((IPV4_DEVCONF_##name - 1) * sizeof(uint32_t))) + +static const uc_nl_nested_spec_t link_attrs_af_spec_inet_devconf_rta = { + .headsize = NLA_ALIGN(IPV4_DEVCONF_MAX * sizeof(uint32_t)), + .nattrs = 32, + .attrs = { + { 0, "forwarding", DT_U32, 0, IPV4_DEVCONF_ENTRY(FORWARDING) }, + { 0, "mc_forwarding", DT_U32, 0, IPV4_DEVCONF_ENTRY(MC_FORWARDING) }, + { 0, "proxy_arp", DT_U32, 0, IPV4_DEVCONF_ENTRY(PROXY_ARP) }, + { 0, "accept_redirects", DT_U32, 0, IPV4_DEVCONF_ENTRY(ACCEPT_REDIRECTS) }, + { 0, "secure_redirects", DT_U32, 0, IPV4_DEVCONF_ENTRY(SECURE_REDIRECTS) }, + { 0, "send_redirects", DT_U32, 0, IPV4_DEVCONF_ENTRY(SEND_REDIRECTS) }, + { 0, "shared_media", DT_U32, 0, IPV4_DEVCONF_ENTRY(SHARED_MEDIA) }, + { 0, "rp_filter", DT_U32, 0, IPV4_DEVCONF_ENTRY(RP_FILTER) }, + { 0, "accept_source_route", DT_U32, 0, IPV4_DEVCONF_ENTRY(ACCEPT_SOURCE_ROUTE) }, + { 0, "bootp_relay", DT_U32, 0, IPV4_DEVCONF_ENTRY(BOOTP_RELAY) }, + { 0, "log_martians", DT_U32, 0, IPV4_DEVCONF_ENTRY(LOG_MARTIANS) }, + { 0, "tag", DT_U32, 0, IPV4_DEVCONF_ENTRY(TAG) }, + { 0, "arpfilter", DT_U32, 0, IPV4_DEVCONF_ENTRY(ARPFILTER) }, + { 0, "medium_id", DT_U32, 0, IPV4_DEVCONF_ENTRY(MEDIUM_ID) }, + { 0, "noxfrm", DT_U32, 0, IPV4_DEVCONF_ENTRY(NOXFRM) }, + { 0, "nopolicy", DT_U32, 0, IPV4_DEVCONF_ENTRY(NOPOLICY) }, + { 0, "force_igmp_version", DT_U32, 0, IPV4_DEVCONF_ENTRY(FORCE_IGMP_VERSION) }, + { 0, "arp_announce", DT_U32, 0, IPV4_DEVCONF_ENTRY(ARP_ANNOUNCE) }, + { 0, "arp_ignore", DT_U32, 0, IPV4_DEVCONF_ENTRY(ARP_IGNORE) }, + { 0, "promote_secondaries", DT_U32, 0, IPV4_DEVCONF_ENTRY(PROMOTE_SECONDARIES) }, + { 0, "arp_accept", DT_U32, 0, IPV4_DEVCONF_ENTRY(ARP_ACCEPT) }, + { 0, "arp_notify", DT_U32, 0, IPV4_DEVCONF_ENTRY(ARP_NOTIFY) }, + { 0, "accept_local", DT_U32, 0, IPV4_DEVCONF_ENTRY(ACCEPT_LOCAL) }, + { 0, "src_vmark", DT_U32, 0, IPV4_DEVCONF_ENTRY(SRC_VMARK) }, + { 0, "proxy_arp_pvlan", DT_U32, 0, IPV4_DEVCONF_ENTRY(PROXY_ARP_PVLAN) }, + { 0, "route_localnet", DT_U32, 0, IPV4_DEVCONF_ENTRY(ROUTE_LOCALNET) }, + { 0, "igmpv2_unsolicited_report_interval", DT_U32, 0, IPV4_DEVCONF_ENTRY(IGMPV2_UNSOLICITED_REPORT_INTERVAL) }, + { 0, "igmpv3_unsolicited_report_interval", DT_U32, 0, IPV4_DEVCONF_ENTRY(IGMPV3_UNSOLICITED_REPORT_INTERVAL) }, + { 0, "ignore_routes_with_linkdown", DT_U32, 0, IPV4_DEVCONF_ENTRY(IGNORE_ROUTES_WITH_LINKDOWN) }, + { 0, "drop_unicast_in_l2_multicast", DT_U32, 0, IPV4_DEVCONF_ENTRY(DROP_UNICAST_IN_L2_MULTICAST) }, + { 0, "drop_gratuitous_arp", DT_U32, 0, IPV4_DEVCONF_ENTRY(DROP_GRATUITOUS_ARP) }, + { 0, "bc_forwarding", DT_U32, 0, IPV4_DEVCONF_ENTRY(BC_FORWARDING) }, + } +}; + +static const uc_nl_nested_spec_t link_attrs_af_spec_inet_rta = { .headsize = 0, .nattrs = 1, .attrs = { + { IFLA_INET_CONF, "conf", DT_NESTED, 0, &link_attrs_af_spec_inet_devconf_rta }, + } +}; + +#define IPV6_DEVCONF_ENTRY(name) ((void *)(DEVCONF_##name * sizeof(uint32_t))) + +static const uc_nl_nested_spec_t link_attrs_af_spec_inet6_devconf_rta = { + .headsize = NLA_ALIGN(DEVCONF_MAX * sizeof(uint32_t)), + .nattrs = 53, + .attrs = { + { 0, "forwarding", DT_S32, 0, IPV6_DEVCONF_ENTRY(FORWARDING) }, + { 0, "hoplimit", DT_S32, 0, IPV6_DEVCONF_ENTRY(HOPLIMIT) }, + { 0, "mtu6", DT_S32, 0, IPV6_DEVCONF_ENTRY(MTU6) }, + { 0, "accept_ra", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA) }, + { 0, "accept_redirects", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_REDIRECTS) }, + { 0, "autoconf", DT_S32, 0, IPV6_DEVCONF_ENTRY(AUTOCONF) }, + { 0, "dad_transmits", DT_S32, 0, IPV6_DEVCONF_ENTRY(DAD_TRANSMITS) }, + { 0, "rtr_solicits", DT_S32, 0, IPV6_DEVCONF_ENTRY(RTR_SOLICITS) }, + { 0, "rtr_solicit_interval", DT_S32, 0, IPV6_DEVCONF_ENTRY(RTR_SOLICIT_INTERVAL) }, + { 0, "rtr_solicit_delay", DT_S32, 0, IPV6_DEVCONF_ENTRY(RTR_SOLICIT_DELAY) }, + { 0, "use_tempaddr", DT_S32, 0, IPV6_DEVCONF_ENTRY(USE_TEMPADDR) }, + { 0, "temp_valid_lft", DT_S32, 0, IPV6_DEVCONF_ENTRY(TEMP_VALID_LFT) }, + { 0, "temp_prefered_lft", DT_S32, 0, IPV6_DEVCONF_ENTRY(TEMP_PREFERED_LFT) }, + { 0, "regen_max_retry", DT_S32, 0, IPV6_DEVCONF_ENTRY(REGEN_MAX_RETRY) }, + { 0, "max_desync_factor", DT_S32, 0, IPV6_DEVCONF_ENTRY(MAX_DESYNC_FACTOR) }, + { 0, "max_addresses", DT_S32, 0, IPV6_DEVCONF_ENTRY(MAX_ADDRESSES) }, + { 0, "force_mld_version", DT_S32, 0, IPV6_DEVCONF_ENTRY(FORCE_MLD_VERSION) }, + { 0, "accept_ra_defrtr", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_DEFRTR) }, + { 0, "accept_ra_pinfo", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_PINFO) }, + { 0, "accept_ra_rtr_pref", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_RTR_PREF) }, + { 0, "rtr_probe_interval", DT_S32, 0, IPV6_DEVCONF_ENTRY(RTR_PROBE_INTERVAL) }, + { 0, "accept_ra_rt_info_max_plen", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_RT_INFO_MAX_PLEN) }, + { 0, "proxy_ndp", DT_S32, 0, IPV6_DEVCONF_ENTRY(PROXY_NDP) }, + { 0, "optimistic_dad", DT_S32, 0, IPV6_DEVCONF_ENTRY(OPTIMISTIC_DAD) }, + { 0, "accept_source_route", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_SOURCE_ROUTE) }, + { 0, "mc_forwarding", DT_S32, 0, IPV6_DEVCONF_ENTRY(MC_FORWARDING) }, + { 0, "disable_ipv6", DT_S32, 0, IPV6_DEVCONF_ENTRY(DISABLE_IPV6) }, + { 0, "accept_dad", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_DAD) }, + { 0, "force_tllao", DT_S32, 0, IPV6_DEVCONF_ENTRY(FORCE_TLLAO) }, + { 0, "ndisc_notify", DT_S32, 0, IPV6_DEVCONF_ENTRY(NDISC_NOTIFY) }, + { 0, "mldv1_unsolicited_report_interval", DT_S32, 0, IPV6_DEVCONF_ENTRY(MLDV1_UNSOLICITED_REPORT_INTERVAL) }, + { 0, "mldv2_unsolicited_report_interval", DT_S32, 0, IPV6_DEVCONF_ENTRY(MLDV2_UNSOLICITED_REPORT_INTERVAL) }, + { 0, "suppress_frag_ndisc", DT_S32, 0, IPV6_DEVCONF_ENTRY(SUPPRESS_FRAG_NDISC) }, + { 0, "accept_ra_from_local", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_FROM_LOCAL) }, + { 0, "use_optimistic", DT_S32, 0, IPV6_DEVCONF_ENTRY(USE_OPTIMISTIC) }, + { 0, "accept_ra_mtu", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_MTU) }, + { 0, "stable_secret", DT_S32, 0, IPV6_DEVCONF_ENTRY(STABLE_SECRET) }, + { 0, "use_oif_addrs_only", DT_S32, 0, IPV6_DEVCONF_ENTRY(USE_OIF_ADDRS_ONLY) }, + { 0, "accept_ra_min_hop_limit", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_MIN_HOP_LIMIT) }, + { 0, "ignore_routes_with_linkdown", DT_S32, 0, IPV6_DEVCONF_ENTRY(IGNORE_ROUTES_WITH_LINKDOWN) }, + { 0, "drop_unicast_in_l2_multicast", DT_S32, 0, IPV6_DEVCONF_ENTRY(DROP_UNICAST_IN_L2_MULTICAST) }, + { 0, "drop_unsolicited_na", DT_S32, 0, IPV6_DEVCONF_ENTRY(DROP_UNSOLICITED_NA) }, + { 0, "keep_addr_on_down", DT_S32, 0, IPV6_DEVCONF_ENTRY(KEEP_ADDR_ON_DOWN) }, + { 0, "rtr_solicit_max_interval", DT_S32, 0, IPV6_DEVCONF_ENTRY(RTR_SOLICIT_MAX_INTERVAL) }, + { 0, "seg6_enabled", DT_S32, 0, IPV6_DEVCONF_ENTRY(SEG6_ENABLED) }, + { 0, "seg6_require_hmac", DT_S32, 0, IPV6_DEVCONF_ENTRY(SEG6_REQUIRE_HMAC) }, + { 0, "enhanced_dad", DT_S32, 0, IPV6_DEVCONF_ENTRY(ENHANCED_DAD) }, + { 0, "addr_gen_mode", DT_S32, 0, IPV6_DEVCONF_ENTRY(ADDR_GEN_MODE) }, + { 0, "disable_policy", DT_S32, 0, IPV6_DEVCONF_ENTRY(DISABLE_POLICY) }, + { 0, "accept_ra_rt_info_min_plen", DT_S32, 0, IPV6_DEVCONF_ENTRY(ACCEPT_RA_RT_INFO_MIN_PLEN) }, + { 0, "ndisc_tclass", DT_S32, 0, IPV6_DEVCONF_ENTRY(NDISC_TCLASS) }, + { 0, "rpl_seg_enabled", DT_S32, 0, IPV6_DEVCONF_ENTRY(RPL_SEG_ENABLED) }, + { 0, "ra_defrtr_metric", DT_S32, 0, IPV6_DEVCONF_ENTRY(RA_DEFRTR_METRIC) }, + } +}; + +static const uc_nl_nested_spec_t link_attrs_af_spec_inet6_rta = { + .headsize = 0, + .nattrs = 3, + .attrs = { { IFLA_INET6_ADDR_GEN_MODE, "mode", DT_U8, 0, NULL }, + { IFLA_INET6_FLAGS, "flags", DT_U32, DF_NO_SET, NULL }, + { IFLA_INET6_CONF, "conf", DT_NESTED, DF_NO_SET, &link_attrs_af_spec_inet6_devconf_rta }, } }; @@ -608,8 +722,9 @@ static const uc_nl_nested_spec_t link_attrs_bridge_vinfo_rta = { static const uc_nl_nested_spec_t link_attrs_af_spec_rta = { .headsize = 0, - .nattrs = 3, + .nattrs = 4, .attrs = { + { AF_INET, "inet", DT_NESTED, DF_NO_SET, &link_attrs_af_spec_inet_rta }, { AF_INET6, "inet6", DT_NESTED, 0, &link_attrs_af_spec_inet6_rta }, { IFLA_BRIDGE_FLAGS, "bridge_flags", DT_U16, 0, NULL }, { IFLA_BRIDGE_VLAN_INFO, "bridge_vlan_info", DT_NESTED, DF_MULTIPLE|DF_FLAT, &link_attrs_bridge_vinfo_rta }, |