11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * IPv6 BSD socket options interface 31da177e4SLinus Torvalds * Linux INET6 implementation 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: 61da177e4SLinus Torvalds * Pedro Roque <roque@di.fc.ul.pt> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * Based on linux/net/ipv4/ip_sockglue.c 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 111da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 121da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 131da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * FIXME: Make the setsockopt code POSIX compliant: That is 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * o Truncate getsockopt returns 181da177e4SLinus Torvalds * o Return an optlen of the truncated length if need be 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * Changes: 211da177e4SLinus Torvalds * David L Stevens <dlstevens@us.ibm.com>: 221da177e4SLinus Torvalds * - added multicast source filtering API for MLDv2 231da177e4SLinus Torvalds */ 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #include <linux/module.h> 264fc268d2SRandy Dunlap #include <linux/capability.h> 271da177e4SLinus Torvalds #include <linux/errno.h> 281da177e4SLinus Torvalds #include <linux/types.h> 291da177e4SLinus Torvalds #include <linux/socket.h> 301da177e4SLinus Torvalds #include <linux/sockios.h> 311da177e4SLinus Torvalds #include <linux/net.h> 321da177e4SLinus Torvalds #include <linux/in6.h> 337bc570c8SYOSHIFUJI Hideaki #include <linux/mroute6.h> 341da177e4SLinus Torvalds #include <linux/netdevice.h> 351da177e4SLinus Torvalds #include <linux/if_arp.h> 361da177e4SLinus Torvalds #include <linux/init.h> 371da177e4SLinus Torvalds #include <linux/sysctl.h> 381da177e4SLinus Torvalds #include <linux/netfilter.h> 395a0e3ad6STejun Heo #include <linux/slab.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds #include <net/sock.h> 421da177e4SLinus Torvalds #include <net/snmp.h> 431da177e4SLinus Torvalds #include <net/ipv6.h> 441da177e4SLinus Torvalds #include <net/ndisc.h> 451da177e4SLinus Torvalds #include <net/protocol.h> 461da177e4SLinus Torvalds #include <net/transp_v6.h> 471da177e4SLinus Torvalds #include <net/ip6_route.h> 481da177e4SLinus Torvalds #include <net/addrconf.h> 491da177e4SLinus Torvalds #include <net/inet_common.h> 501da177e4SLinus Torvalds #include <net/tcp.h> 511da177e4SLinus Torvalds #include <net/udp.h> 52ba4e58ecSGerrit Renker #include <net/udplite.h> 531da177e4SLinus Torvalds #include <net/xfrm.h> 54dae50295SDavid L Stevens #include <net/compat.h> 55a149e7c7SDavid Lebrun #include <net/seg6.h> 561da177e4SLinus Torvalds 577c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds struct ip6_ra_chain *ip6_ra_chain; 601da177e4SLinus Torvalds DEFINE_RWLOCK(ip6_ra_lock); 611da177e4SLinus Torvalds 62725a8ff0SDenis V. Lunev int ip6_ra_control(struct sock *sk, int sel) 631da177e4SLinus Torvalds { 641da177e4SLinus Torvalds struct ip6_ra_chain *ra, *new_ra, **rap; 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds /* RA packet may be delivered ONLY to IPPROTO_RAW socket */ 67c720c7e8SEric Dumazet if (sk->sk_type != SOCK_RAW || inet_sk(sk)->inet_num != IPPROTO_RAW) 681717699cSYOSHIFUJI Hideaki return -ENOPROTOOPT; 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds new_ra = (sel >= 0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL; 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds write_lock_bh(&ip6_ra_lock); 731da177e4SLinus Torvalds for (rap = &ip6_ra_chain; (ra = *rap) != NULL; rap = &ra->next) { 741da177e4SLinus Torvalds if (ra->sk == sk) { 751da177e4SLinus Torvalds if (sel >= 0) { 761da177e4SLinus Torvalds write_unlock_bh(&ip6_ra_lock); 771da177e4SLinus Torvalds kfree(new_ra); 781da177e4SLinus Torvalds return -EADDRINUSE; 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds *rap = ra->next; 821da177e4SLinus Torvalds write_unlock_bh(&ip6_ra_lock); 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds sock_put(sk); 851da177e4SLinus Torvalds kfree(ra); 861da177e4SLinus Torvalds return 0; 871da177e4SLinus Torvalds } 881da177e4SLinus Torvalds } 8963159f29SIan Morris if (!new_ra) { 901da177e4SLinus Torvalds write_unlock_bh(&ip6_ra_lock); 911da177e4SLinus Torvalds return -ENOBUFS; 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds new_ra->sk = sk; 941da177e4SLinus Torvalds new_ra->sel = sel; 951da177e4SLinus Torvalds new_ra->next = ra; 961da177e4SLinus Torvalds *rap = new_ra; 971da177e4SLinus Torvalds sock_hold(sk); 981da177e4SLinus Torvalds write_unlock_bh(&ip6_ra_lock); 991da177e4SLinus Torvalds return 0; 1001da177e4SLinus Torvalds } 1011da177e4SLinus Torvalds 102e7712f1aSYOSHIFUJI Hideaki struct ipv6_txoptions *ipv6_update_options(struct sock *sk, 103e7712f1aSYOSHIFUJI Hideaki struct ipv6_txoptions *opt) 104e7712f1aSYOSHIFUJI Hideaki { 105e7712f1aSYOSHIFUJI Hideaki if (inet_sk(sk)->is_icsk) { 106e7712f1aSYOSHIFUJI Hideaki if (opt && 107e7712f1aSYOSHIFUJI Hideaki !((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) && 108c720c7e8SEric Dumazet inet_sk(sk)->inet_daddr != LOOPBACK4_IPV6) { 109e7712f1aSYOSHIFUJI Hideaki struct inet_connection_sock *icsk = inet_csk(sk); 110e7712f1aSYOSHIFUJI Hideaki icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen; 111e7712f1aSYOSHIFUJI Hideaki icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie); 112e7712f1aSYOSHIFUJI Hideaki } 113e7712f1aSYOSHIFUJI Hideaki } 11445f6fad8SEric Dumazet opt = xchg((__force struct ipv6_txoptions **)&inet6_sk(sk)->opt, 11545f6fad8SEric Dumazet opt); 116e7712f1aSYOSHIFUJI Hideaki sk_dst_reset(sk); 117e7712f1aSYOSHIFUJI Hideaki 118e7712f1aSYOSHIFUJI Hideaki return opt; 119e7712f1aSYOSHIFUJI Hideaki } 120e7712f1aSYOSHIFUJI Hideaki 121baf606d9SMarcelo Ricardo Leitner static bool setsockopt_needs_rtnl(int optname) 122baf606d9SMarcelo Ricardo Leitner { 123baf606d9SMarcelo Ricardo Leitner switch (optname) { 1248651be8fSWANG Cong case IPV6_ADDRFORM: 125baf606d9SMarcelo Ricardo Leitner case IPV6_ADD_MEMBERSHIP: 126baf606d9SMarcelo Ricardo Leitner case IPV6_DROP_MEMBERSHIP: 127c4a6853dSMarcelo Ricardo Leitner case IPV6_JOIN_ANYCAST: 128c4a6853dSMarcelo Ricardo Leitner case IPV6_LEAVE_ANYCAST: 129baf606d9SMarcelo Ricardo Leitner case MCAST_JOIN_GROUP: 130baf606d9SMarcelo Ricardo Leitner case MCAST_LEAVE_GROUP: 13154ff9ef3SMarcelo Ricardo Leitner case MCAST_JOIN_SOURCE_GROUP: 13254ff9ef3SMarcelo Ricardo Leitner case MCAST_LEAVE_SOURCE_GROUP: 13354ff9ef3SMarcelo Ricardo Leitner case MCAST_BLOCK_SOURCE: 13454ff9ef3SMarcelo Ricardo Leitner case MCAST_UNBLOCK_SOURCE: 13554ff9ef3SMarcelo Ricardo Leitner case MCAST_MSFILTER: 136baf606d9SMarcelo Ricardo Leitner return true; 137baf606d9SMarcelo Ricardo Leitner } 138baf606d9SMarcelo Ricardo Leitner return false; 139baf606d9SMarcelo Ricardo Leitner } 140baf606d9SMarcelo Ricardo Leitner 1413fdadf7dSDmitry Mishin static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, 142b7058842SDavid S. Miller char __user *optval, unsigned int optlen) 1431da177e4SLinus Torvalds { 1441da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 1453b1e0a65SYOSHIFUJI Hideaki struct net *net = sock_net(sk); 1461da177e4SLinus Torvalds int val, valbool; 1471da177e4SLinus Torvalds int retv = -ENOPROTOOPT; 148baf606d9SMarcelo Ricardo Leitner bool needs_rtnl = setsockopt_needs_rtnl(optname); 1491da177e4SLinus Torvalds 15063159f29SIan Morris if (!optval) 1511da177e4SLinus Torvalds val = 0; 152b2a9d7c2SYOSHIFUJI Hideaki else { 153b2a9d7c2SYOSHIFUJI Hideaki if (optlen >= sizeof(int)) { 154b2a9d7c2SYOSHIFUJI Hideaki if (get_user(val, (int __user *) optval)) 1551da177e4SLinus Torvalds return -EFAULT; 156b2a9d7c2SYOSHIFUJI Hideaki } else 157b2a9d7c2SYOSHIFUJI Hideaki val = 0; 158b2a9d7c2SYOSHIFUJI Hideaki } 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds valbool = (val != 0); 1611da177e4SLinus Torvalds 1627bc570c8SYOSHIFUJI Hideaki if (ip6_mroute_opt(optname)) 1637bc570c8SYOSHIFUJI Hideaki return ip6_mroute_setsockopt(sk, optname, optval, optlen); 1647bc570c8SYOSHIFUJI Hideaki 165baf606d9SMarcelo Ricardo Leitner if (needs_rtnl) 166baf606d9SMarcelo Ricardo Leitner rtnl_lock(); 1671da177e4SLinus Torvalds lock_sock(sk); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds switch (optname) { 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds case IPV6_ADDRFORM: 172b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 173b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 1741da177e4SLinus Torvalds if (val == PF_INET) { 1751da177e4SLinus Torvalds struct ipv6_txoptions *opt; 1761da177e4SLinus Torvalds struct sk_buff *pktopt; 1771da177e4SLinus Torvalds 17849d074f4SDenis V. Lunev if (sk->sk_type == SOCK_RAW) 17949d074f4SDenis V. Lunev break; 18049d074f4SDenis V. Lunev 1819596cc82SDenis V. Lunev if (sk->sk_protocol == IPPROTO_UDP || 1829596cc82SDenis V. Lunev sk->sk_protocol == IPPROTO_UDPLITE) { 1839596cc82SDenis V. Lunev struct udp_sock *up = udp_sk(sk); 1849596cc82SDenis V. Lunev if (up->pending == AF_INET6) { 1859596cc82SDenis V. Lunev retv = -EBUSY; 1869596cc82SDenis V. Lunev break; 1879596cc82SDenis V. Lunev } 1889596cc82SDenis V. Lunev } else if (sk->sk_protocol != IPPROTO_TCP) 1891da177e4SLinus Torvalds break; 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds if (sk->sk_state != TCP_ESTABLISHED) { 1921da177e4SLinus Torvalds retv = -ENOTCONN; 1931da177e4SLinus Torvalds break; 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds if (ipv6_only_sock(sk) || 197efe4208fSEric Dumazet !ipv6_addr_v4mapped(&sk->sk_v6_daddr)) { 1981da177e4SLinus Torvalds retv = -EADDRNOTAVAIL; 1991da177e4SLinus Torvalds break; 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds fl6_free_socklist(sk); 2038651be8fSWANG Cong __ipv6_sock_mc_close(sk); 2041da177e4SLinus Torvalds 205e6848976SArnaldo Carvalho de Melo /* 206e6848976SArnaldo Carvalho de Melo * Sock is moving from IPv6 to IPv4 (sk_prot), so 207e6848976SArnaldo Carvalho de Melo * remove it from the refcnt debug socks count in the 208e6848976SArnaldo Carvalho de Melo * original family... 209e6848976SArnaldo Carvalho de Melo */ 210e6848976SArnaldo Carvalho de Melo sk_refcnt_debug_dec(sk); 211e6848976SArnaldo Carvalho de Melo 2121da177e4SLinus Torvalds if (sk->sk_protocol == IPPROTO_TCP) { 213d83d8461SArnaldo Carvalho de Melo struct inet_connection_sock *icsk = inet_csk(sk); 2141da177e4SLinus Torvalds local_bh_disable(); 215c29a0bc4SPavel Emelyanov sock_prot_inuse_add(net, sk->sk_prot, -1); 216c29a0bc4SPavel Emelyanov sock_prot_inuse_add(net, &tcp_prot, 1); 2171da177e4SLinus Torvalds local_bh_enable(); 2181da177e4SLinus Torvalds sk->sk_prot = &tcp_prot; 219d83d8461SArnaldo Carvalho de Melo icsk->icsk_af_ops = &ipv4_specific; 2201da177e4SLinus Torvalds sk->sk_socket->ops = &inet_stream_ops; 2211da177e4SLinus Torvalds sk->sk_family = PF_INET; 222d83d8461SArnaldo Carvalho de Melo tcp_sync_mss(sk, icsk->icsk_pmtu_cookie); 2231da177e4SLinus Torvalds } else { 224ba4e58ecSGerrit Renker struct proto *prot = &udp_prot; 225ba4e58ecSGerrit Renker 226db8dac20SDavid S. Miller if (sk->sk_protocol == IPPROTO_UDPLITE) 227ba4e58ecSGerrit Renker prot = &udplite_prot; 2281da177e4SLinus Torvalds local_bh_disable(); 229c29a0bc4SPavel Emelyanov sock_prot_inuse_add(net, sk->sk_prot, -1); 230c29a0bc4SPavel Emelyanov sock_prot_inuse_add(net, prot, 1); 2311da177e4SLinus Torvalds local_bh_enable(); 232ba4e58ecSGerrit Renker sk->sk_prot = prot; 2331da177e4SLinus Torvalds sk->sk_socket->ops = &inet_dgram_ops; 2341da177e4SLinus Torvalds sk->sk_family = PF_INET; 2351da177e4SLinus Torvalds } 23645f6fad8SEric Dumazet opt = xchg((__force struct ipv6_txoptions **)&np->opt, 23745f6fad8SEric Dumazet NULL); 23845f6fad8SEric Dumazet if (opt) { 23945f6fad8SEric Dumazet atomic_sub(opt->tot_len, &sk->sk_omem_alloc); 24045f6fad8SEric Dumazet txopt_put(opt); 24145f6fad8SEric Dumazet } 2421da177e4SLinus Torvalds pktopt = xchg(&np->pktoptions, NULL); 2431da177e4SLinus Torvalds kfree_skb(pktopt); 2441da177e4SLinus Torvalds 245e6848976SArnaldo Carvalho de Melo /* 246e6848976SArnaldo Carvalho de Melo * ... and add it to the refcnt debug socks count 247e6848976SArnaldo Carvalho de Melo * in the new family. -acme 248e6848976SArnaldo Carvalho de Melo */ 249e6848976SArnaldo Carvalho de Melo sk_refcnt_debug_inc(sk); 2501da177e4SLinus Torvalds module_put(THIS_MODULE); 2511da177e4SLinus Torvalds retv = 0; 2521da177e4SLinus Torvalds break; 2531da177e4SLinus Torvalds } 2541da177e4SLinus Torvalds goto e_inval; 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds case IPV6_V6ONLY: 257b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int) || 258c720c7e8SEric Dumazet inet_sk(sk)->inet_num) 2591da177e4SLinus Torvalds goto e_inval; 2609fe516baSEric Dumazet sk->sk_ipv6only = valbool; 2611da177e4SLinus Torvalds retv = 0; 2621da177e4SLinus Torvalds break; 2631da177e4SLinus Torvalds 264333fad53SYOSHIFUJI Hideaki case IPV6_RECVPKTINFO: 265b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 266b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 2671da177e4SLinus Torvalds np->rxopt.bits.rxinfo = valbool; 2681da177e4SLinus Torvalds retv = 0; 2691da177e4SLinus Torvalds break; 2701da177e4SLinus Torvalds 271333fad53SYOSHIFUJI Hideaki case IPV6_2292PKTINFO: 272b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 273b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 274333fad53SYOSHIFUJI Hideaki np->rxopt.bits.rxoinfo = valbool; 275333fad53SYOSHIFUJI Hideaki retv = 0; 276333fad53SYOSHIFUJI Hideaki break; 277333fad53SYOSHIFUJI Hideaki 278333fad53SYOSHIFUJI Hideaki case IPV6_RECVHOPLIMIT: 279b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 280b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 2811da177e4SLinus Torvalds np->rxopt.bits.rxhlim = valbool; 2821da177e4SLinus Torvalds retv = 0; 2831da177e4SLinus Torvalds break; 2841da177e4SLinus Torvalds 285333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPLIMIT: 286b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 287b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 288333fad53SYOSHIFUJI Hideaki np->rxopt.bits.rxohlim = valbool; 289333fad53SYOSHIFUJI Hideaki retv = 0; 290333fad53SYOSHIFUJI Hideaki break; 291333fad53SYOSHIFUJI Hideaki 292333fad53SYOSHIFUJI Hideaki case IPV6_RECVRTHDR: 293b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 294b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 2954c752098SYOSHIFUJI Hideaki np->rxopt.bits.srcrt = valbool; 2961da177e4SLinus Torvalds retv = 0; 2971da177e4SLinus Torvalds break; 2981da177e4SLinus Torvalds 299333fad53SYOSHIFUJI Hideaki case IPV6_2292RTHDR: 300b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 301b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 3024c752098SYOSHIFUJI Hideaki np->rxopt.bits.osrcrt = valbool; 303333fad53SYOSHIFUJI Hideaki retv = 0; 304333fad53SYOSHIFUJI Hideaki break; 305333fad53SYOSHIFUJI Hideaki 306333fad53SYOSHIFUJI Hideaki case IPV6_RECVHOPOPTS: 307b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 308b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 3091da177e4SLinus Torvalds np->rxopt.bits.hopopts = valbool; 3101da177e4SLinus Torvalds retv = 0; 3111da177e4SLinus Torvalds break; 3121da177e4SLinus Torvalds 313333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPOPTS: 314b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 315b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 316333fad53SYOSHIFUJI Hideaki np->rxopt.bits.ohopopts = valbool; 317333fad53SYOSHIFUJI Hideaki retv = 0; 318333fad53SYOSHIFUJI Hideaki break; 319333fad53SYOSHIFUJI Hideaki 320333fad53SYOSHIFUJI Hideaki case IPV6_RECVDSTOPTS: 321b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 322b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 3231da177e4SLinus Torvalds np->rxopt.bits.dstopts = valbool; 3241da177e4SLinus Torvalds retv = 0; 3251da177e4SLinus Torvalds break; 3261da177e4SLinus Torvalds 327333fad53SYOSHIFUJI Hideaki case IPV6_2292DSTOPTS: 328b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 329b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 330333fad53SYOSHIFUJI Hideaki np->rxopt.bits.odstopts = valbool; 331333fad53SYOSHIFUJI Hideaki retv = 0; 332333fad53SYOSHIFUJI Hideaki break; 333333fad53SYOSHIFUJI Hideaki 33441a1f8eaSYOSHIFUJI Hideaki case IPV6_TCLASS: 335b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 336b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 337d0ee011fSRemi Denis-Courmont if (val < -1 || val > 0xff) 33841a1f8eaSYOSHIFUJI Hideaki goto e_inval; 33926ced1e4SGerrit Renker /* RFC 3542, 6.5: default traffic class of 0x0 */ 34026ced1e4SGerrit Renker if (val == -1) 34126ced1e4SGerrit Renker val = 0; 34241a1f8eaSYOSHIFUJI Hideaki np->tclass = val; 34341a1f8eaSYOSHIFUJI Hideaki retv = 0; 34441a1f8eaSYOSHIFUJI Hideaki break; 34541a1f8eaSYOSHIFUJI Hideaki 34641a1f8eaSYOSHIFUJI Hideaki case IPV6_RECVTCLASS: 347b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 348b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 34941a1f8eaSYOSHIFUJI Hideaki np->rxopt.bits.rxtclass = valbool; 35041a1f8eaSYOSHIFUJI Hideaki retv = 0; 35141a1f8eaSYOSHIFUJI Hideaki break; 35241a1f8eaSYOSHIFUJI Hideaki 3531da177e4SLinus Torvalds case IPV6_FLOWINFO: 354b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 355b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 3561da177e4SLinus Torvalds np->rxopt.bits.rxflow = valbool; 3571da177e4SLinus Torvalds retv = 0; 3581da177e4SLinus Torvalds break; 3591da177e4SLinus Torvalds 360793b1473SBrian Haley case IPV6_RECVPATHMTU: 361793b1473SBrian Haley if (optlen < sizeof(int)) 362793b1473SBrian Haley goto e_inval; 363793b1473SBrian Haley np->rxopt.bits.rxpmtu = valbool; 364793b1473SBrian Haley retv = 0; 365793b1473SBrian Haley break; 366793b1473SBrian Haley 3676c468622SBalazs Scheidler case IPV6_TRANSPARENT: 368af31f412SEric W. Biederman if (valbool && !ns_capable(net->user_ns, CAP_NET_ADMIN) && 369af31f412SEric W. Biederman !ns_capable(net->user_ns, CAP_NET_RAW)) { 370b889416bSBalazs Scheidler retv = -EPERM; 371b889416bSBalazs Scheidler break; 372b889416bSBalazs Scheidler } 3736c468622SBalazs Scheidler if (optlen < sizeof(int)) 3746c468622SBalazs Scheidler goto e_inval; 3756c468622SBalazs Scheidler /* we don't have a separate transparent bit for IPV6 we use the one in the IPv4 socket */ 3766c468622SBalazs Scheidler inet_sk(sk)->transparent = valbool; 3776c468622SBalazs Scheidler retv = 0; 3786c468622SBalazs Scheidler break; 3796c468622SBalazs Scheidler 38084e14fe3SMaciej Żenczykowski case IPV6_FREEBIND: 38184e14fe3SMaciej Żenczykowski if (optlen < sizeof(int)) 38284e14fe3SMaciej Żenczykowski goto e_inval; 38384e14fe3SMaciej Żenczykowski /* we also don't have a separate freebind bit for IPV6 */ 38484e14fe3SMaciej Żenczykowski inet_sk(sk)->freebind = valbool; 38584e14fe3SMaciej Żenczykowski retv = 0; 38684e14fe3SMaciej Żenczykowski break; 38784e14fe3SMaciej Żenczykowski 3886c468622SBalazs Scheidler case IPV6_RECVORIGDSTADDR: 3896c468622SBalazs Scheidler if (optlen < sizeof(int)) 3906c468622SBalazs Scheidler goto e_inval; 3916c468622SBalazs Scheidler np->rxopt.bits.rxorigdstaddr = valbool; 3926c468622SBalazs Scheidler retv = 0; 3936c468622SBalazs Scheidler break; 3946c468622SBalazs Scheidler 395333fad53SYOSHIFUJI Hideaki case IPV6_HOPOPTS: 396333fad53SYOSHIFUJI Hideaki case IPV6_RTHDRDSTOPTS: 397333fad53SYOSHIFUJI Hideaki case IPV6_RTHDR: 398333fad53SYOSHIFUJI Hideaki case IPV6_DSTOPTS: 399333fad53SYOSHIFUJI Hideaki { 400333fad53SYOSHIFUJI Hideaki struct ipv6_txoptions *opt; 401aea7427fSShan Wei 402aea7427fSShan Wei /* remove any sticky options header with a zero option 403aea7427fSShan Wei * length, per RFC3542. 404aea7427fSShan Wei */ 405333fad53SYOSHIFUJI Hideaki if (optlen == 0) 406cb422c46SLuiz Capitulino optval = NULL; 40763159f29SIan Morris else if (!optval) 408cfb266c0SYang Hongyang goto e_inval; 409aea7427fSShan Wei else if (optlen < sizeof(struct ipv6_opt_hdr) || 410aea7427fSShan Wei optlen & 0x7 || optlen > 8 * 255) 411aea7427fSShan Wei goto e_inval; 412333fad53SYOSHIFUJI Hideaki 413333fad53SYOSHIFUJI Hideaki /* hop-by-hop / destination options are privileged option */ 414333fad53SYOSHIFUJI Hideaki retv = -EPERM; 415af31f412SEric W. Biederman if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW)) 416333fad53SYOSHIFUJI Hideaki break; 417333fad53SYOSHIFUJI Hideaki 4181e1d04e6SHannes Frederic Sowa opt = rcu_dereference_protected(np->opt, 4191e1d04e6SHannes Frederic Sowa lockdep_sock_is_held(sk)); 42045f6fad8SEric Dumazet opt = ipv6_renew_options(sk, opt, optname, 421333fad53SYOSHIFUJI Hideaki (struct ipv6_opt_hdr __user *)optval, 422333fad53SYOSHIFUJI Hideaki optlen); 423333fad53SYOSHIFUJI Hideaki if (IS_ERR(opt)) { 424333fad53SYOSHIFUJI Hideaki retv = PTR_ERR(opt); 425333fad53SYOSHIFUJI Hideaki break; 426333fad53SYOSHIFUJI Hideaki } 427333fad53SYOSHIFUJI Hideaki 428333fad53SYOSHIFUJI Hideaki /* routing header option needs extra check */ 4296e093d9dSBrian Haley retv = -EINVAL; 430dfee0a72SOlaf Kirch if (optname == IPV6_RTHDR && opt && opt->srcrt) { 431333fad53SYOSHIFUJI Hideaki struct ipv6_rt_hdr *rthdr = opt->srcrt; 432280a9d34SMasahide NAKAMURA switch (rthdr->type) { 43307a93626SAmerigo Wang #if IS_ENABLED(CONFIG_IPV6_MIP6) 434280a9d34SMasahide NAKAMURA case IPV6_SRCRT_TYPE_2: 4356e093d9dSBrian Haley if (rthdr->hdrlen != 2 || 4366e093d9dSBrian Haley rthdr->segments_left != 1) 4376e093d9dSBrian Haley goto sticky_done; 4386e093d9dSBrian Haley 439280a9d34SMasahide NAKAMURA break; 440bb4dbf9eSYOSHIFUJI Hideaki #endif 441a149e7c7SDavid Lebrun case IPV6_SRCRT_TYPE_4: 442a149e7c7SDavid Lebrun { 443a149e7c7SDavid Lebrun struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *) 444a149e7c7SDavid Lebrun opt->srcrt; 445a149e7c7SDavid Lebrun 446a149e7c7SDavid Lebrun if (!seg6_validate_srh(srh, optlen)) 447a149e7c7SDavid Lebrun goto sticky_done; 448a149e7c7SDavid Lebrun break; 449a149e7c7SDavid Lebrun } 450280a9d34SMasahide NAKAMURA default: 451333fad53SYOSHIFUJI Hideaki goto sticky_done; 452280a9d34SMasahide NAKAMURA } 453333fad53SYOSHIFUJI Hideaki } 454333fad53SYOSHIFUJI Hideaki 455333fad53SYOSHIFUJI Hideaki retv = 0; 456e7712f1aSYOSHIFUJI Hideaki opt = ipv6_update_options(sk, opt); 457333fad53SYOSHIFUJI Hideaki sticky_done: 45845f6fad8SEric Dumazet if (opt) { 45945f6fad8SEric Dumazet atomic_sub(opt->tot_len, &sk->sk_omem_alloc); 46045f6fad8SEric Dumazet txopt_put(opt); 46145f6fad8SEric Dumazet } 462333fad53SYOSHIFUJI Hideaki break; 463333fad53SYOSHIFUJI Hideaki } 464333fad53SYOSHIFUJI Hideaki 465b24a2516SYang Hongyang case IPV6_PKTINFO: 466b24a2516SYang Hongyang { 467b24a2516SYang Hongyang struct in6_pktinfo pkt; 468b24a2516SYang Hongyang 469b24a2516SYang Hongyang if (optlen == 0) 470b24a2516SYang Hongyang goto e_inval; 47163159f29SIan Morris else if (optlen < sizeof(struct in6_pktinfo) || !optval) 472b24a2516SYang Hongyang goto e_inval; 473b24a2516SYang Hongyang 474914d1164SIlpo Järvinen if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) { 475b24a2516SYang Hongyang retv = -EFAULT; 476b24a2516SYang Hongyang break; 477b24a2516SYang Hongyang } 478b24a2516SYang Hongyang if (sk->sk_bound_dev_if && pkt.ipi6_ifindex != sk->sk_bound_dev_if) 479b24a2516SYang Hongyang goto e_inval; 480b24a2516SYang Hongyang 481b24a2516SYang Hongyang np->sticky_pktinfo.ipi6_ifindex = pkt.ipi6_ifindex; 4824e3fd7a0SAlexey Dobriyan np->sticky_pktinfo.ipi6_addr = pkt.ipi6_addr; 483b24a2516SYang Hongyang retv = 0; 484b24a2516SYang Hongyang break; 485b24a2516SYang Hongyang } 486b24a2516SYang Hongyang 487333fad53SYOSHIFUJI Hideaki case IPV6_2292PKTOPTIONS: 4881da177e4SLinus Torvalds { 4891da177e4SLinus Torvalds struct ipv6_txoptions *opt = NULL; 4901da177e4SLinus Torvalds struct msghdr msg; 4914c9483b2SDavid S. Miller struct flowi6 fl6; 492ad1e46a8SSoheil Hassas Yeganeh struct sockcm_cookie sockc_junk; 49326879da5SWei Wang struct ipcm6_cookie ipc6; 4941da177e4SLinus Torvalds 4954c9483b2SDavid S. Miller memset(&fl6, 0, sizeof(fl6)); 4964c9483b2SDavid S. Miller fl6.flowi6_oif = sk->sk_bound_dev_if; 4974c9483b2SDavid S. Miller fl6.flowi6_mark = sk->sk_mark; 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds if (optlen == 0) 5001da177e4SLinus Torvalds goto update; 5011da177e4SLinus Torvalds 5021da177e4SLinus Torvalds /* 1K is probably excessive 5031da177e4SLinus Torvalds * 1K is surely not enough, 2K per standard header is 16K. 5041da177e4SLinus Torvalds */ 5051da177e4SLinus Torvalds retv = -EINVAL; 5061da177e4SLinus Torvalds if (optlen > 64*1024) 5071da177e4SLinus Torvalds break; 5081da177e4SLinus Torvalds 5091da177e4SLinus Torvalds opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL); 5101da177e4SLinus Torvalds retv = -ENOBUFS; 51163159f29SIan Morris if (!opt) 5121da177e4SLinus Torvalds break; 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds memset(opt, 0, sizeof(*opt)); 5150aeea21aSReshetova, Elena refcount_set(&opt->refcnt, 1); 5161da177e4SLinus Torvalds opt->tot_len = sizeof(*opt) + optlen; 5171da177e4SLinus Torvalds retv = -EFAULT; 5181da177e4SLinus Torvalds if (copy_from_user(opt+1, optval, optlen)) 5191da177e4SLinus Torvalds goto done; 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds msg.msg_controllen = optlen; 5221da177e4SLinus Torvalds msg.msg_control = (void *)(opt+1); 52326879da5SWei Wang ipc6.opt = opt; 5241da177e4SLinus Torvalds 52526879da5SWei Wang retv = ip6_datagram_send_ctl(net, sk, &msg, &fl6, &ipc6, &sockc_junk); 5261da177e4SLinus Torvalds if (retv) 5271da177e4SLinus Torvalds goto done; 5281da177e4SLinus Torvalds update: 5291da177e4SLinus Torvalds retv = 0; 530e7712f1aSYOSHIFUJI Hideaki opt = ipv6_update_options(sk, opt); 5311da177e4SLinus Torvalds done: 53245f6fad8SEric Dumazet if (opt) { 53345f6fad8SEric Dumazet atomic_sub(opt->tot_len, &sk->sk_omem_alloc); 53445f6fad8SEric Dumazet txopt_put(opt); 53545f6fad8SEric Dumazet } 5361da177e4SLinus Torvalds break; 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds case IPV6_UNICAST_HOPS: 539b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 540b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 5411da177e4SLinus Torvalds if (val > 255 || val < -1) 5421da177e4SLinus Torvalds goto e_inval; 5431da177e4SLinus Torvalds np->hop_limit = val; 5441da177e4SLinus Torvalds retv = 0; 5451da177e4SLinus Torvalds break; 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds case IPV6_MULTICAST_HOPS: 5481da177e4SLinus Torvalds if (sk->sk_type == SOCK_STREAM) 5491717699cSYOSHIFUJI Hideaki break; 550b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 551b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 5521da177e4SLinus Torvalds if (val > 255 || val < -1) 5531da177e4SLinus Torvalds goto e_inval; 5542a38e6d5SLi Wei np->mcast_hops = (val == -1 ? IPV6_DEFAULT_MCASTHOPS : val); 5551da177e4SLinus Torvalds retv = 0; 5561da177e4SLinus Torvalds break; 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds case IPV6_MULTICAST_LOOP: 559b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 560b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 56128d44882SYOSHIFUJI Hideaki if (val != valbool) 56228d44882SYOSHIFUJI Hideaki goto e_inval; 5631da177e4SLinus Torvalds np->mc_loop = valbool; 5641da177e4SLinus Torvalds retv = 0; 5651da177e4SLinus Torvalds break; 5661da177e4SLinus Torvalds 567c4062dfcSErich E. Hoover case IPV6_UNICAST_IF: 568c4062dfcSErich E. Hoover { 569c4062dfcSErich E. Hoover struct net_device *dev = NULL; 570c4062dfcSErich E. Hoover int ifindex; 571c4062dfcSErich E. Hoover 572c4062dfcSErich E. Hoover if (optlen != sizeof(int)) 573c4062dfcSErich E. Hoover goto e_inval; 574c4062dfcSErich E. Hoover 575c4062dfcSErich E. Hoover ifindex = (__force int)ntohl((__force __be32)val); 576c4062dfcSErich E. Hoover if (ifindex == 0) { 577c4062dfcSErich E. Hoover np->ucast_oif = 0; 578c4062dfcSErich E. Hoover retv = 0; 579c4062dfcSErich E. Hoover break; 580c4062dfcSErich E. Hoover } 581c4062dfcSErich E. Hoover 582c4062dfcSErich E. Hoover dev = dev_get_by_index(net, ifindex); 583c4062dfcSErich E. Hoover retv = -EADDRNOTAVAIL; 584c4062dfcSErich E. Hoover if (!dev) 585c4062dfcSErich E. Hoover break; 586c4062dfcSErich E. Hoover dev_put(dev); 587c4062dfcSErich E. Hoover 588c4062dfcSErich E. Hoover retv = -EINVAL; 589c4062dfcSErich E. Hoover if (sk->sk_bound_dev_if) 590c4062dfcSErich E. Hoover break; 591c4062dfcSErich E. Hoover 592c4062dfcSErich E. Hoover np->ucast_oif = ifindex; 593c4062dfcSErich E. Hoover retv = 0; 594c4062dfcSErich E. Hoover break; 595c4062dfcSErich E. Hoover } 596c4062dfcSErich E. Hoover 5971da177e4SLinus Torvalds case IPV6_MULTICAST_IF: 5981da177e4SLinus Torvalds if (sk->sk_type == SOCK_STREAM) 5991717699cSYOSHIFUJI Hideaki break; 600b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 601b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 6024953f0fcSBrian Haley 6034953f0fcSBrian Haley if (val) { 60455b80503SEric Dumazet struct net_device *dev; 6057bb387c5SDavid Ahern int midx; 60655b80503SEric Dumazet 6077bb387c5SDavid Ahern rcu_read_lock(); 6081da177e4SLinus Torvalds 6097bb387c5SDavid Ahern dev = dev_get_by_index_rcu(net, val); 61055b80503SEric Dumazet if (!dev) { 6117bb387c5SDavid Ahern rcu_read_unlock(); 6121da177e4SLinus Torvalds retv = -ENODEV; 6131da177e4SLinus Torvalds break; 6141da177e4SLinus Torvalds } 6157bb387c5SDavid Ahern midx = l3mdev_master_ifindex_rcu(dev); 6167bb387c5SDavid Ahern 6177bb387c5SDavid Ahern rcu_read_unlock(); 6187bb387c5SDavid Ahern 6197bb387c5SDavid Ahern if (sk->sk_bound_dev_if && 6207bb387c5SDavid Ahern sk->sk_bound_dev_if != val && 6217bb387c5SDavid Ahern (!midx || midx != sk->sk_bound_dev_if)) 6227bb387c5SDavid Ahern goto e_inval; 6234953f0fcSBrian Haley } 6241da177e4SLinus Torvalds np->mcast_oif = val; 6251da177e4SLinus Torvalds retv = 0; 6261da177e4SLinus Torvalds break; 6271da177e4SLinus Torvalds case IPV6_ADD_MEMBERSHIP: 6281da177e4SLinus Torvalds case IPV6_DROP_MEMBERSHIP: 6291da177e4SLinus Torvalds { 6301da177e4SLinus Torvalds struct ipv6_mreq mreq; 6311da177e4SLinus Torvalds 632a28398baSWang Chen if (optlen < sizeof(struct ipv6_mreq)) 633a28398baSWang Chen goto e_inval; 634a28398baSWang Chen 635a96fb49bSFlavio Leitner retv = -EPROTO; 636a96fb49bSFlavio Leitner if (inet_sk(sk)->is_icsk) 637a96fb49bSFlavio Leitner break; 638a96fb49bSFlavio Leitner 6391da177e4SLinus Torvalds retv = -EFAULT; 6401da177e4SLinus Torvalds if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq))) 6411da177e4SLinus Torvalds break; 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds if (optname == IPV6_ADD_MEMBERSHIP) 64454ff9ef3SMarcelo Ricardo Leitner retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); 6451da177e4SLinus Torvalds else 64654ff9ef3SMarcelo Ricardo Leitner retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr); 6471da177e4SLinus Torvalds break; 6481da177e4SLinus Torvalds } 6491da177e4SLinus Torvalds case IPV6_JOIN_ANYCAST: 6501da177e4SLinus Torvalds case IPV6_LEAVE_ANYCAST: 6511da177e4SLinus Torvalds { 6521da177e4SLinus Torvalds struct ipv6_mreq mreq; 6531da177e4SLinus Torvalds 654a28398baSWang Chen if (optlen < sizeof(struct ipv6_mreq)) 6551da177e4SLinus Torvalds goto e_inval; 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds retv = -EFAULT; 6581da177e4SLinus Torvalds if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq))) 6591da177e4SLinus Torvalds break; 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds if (optname == IPV6_JOIN_ANYCAST) 6621da177e4SLinus Torvalds retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr); 6631da177e4SLinus Torvalds else 6641da177e4SLinus Torvalds retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr); 6651da177e4SLinus Torvalds break; 6661da177e4SLinus Torvalds } 6671da177e4SLinus Torvalds case MCAST_JOIN_GROUP: 6681da177e4SLinus Torvalds case MCAST_LEAVE_GROUP: 6691da177e4SLinus Torvalds { 6701da177e4SLinus Torvalds struct group_req greq; 6711da177e4SLinus Torvalds struct sockaddr_in6 *psin6; 6721da177e4SLinus Torvalds 673a28398baSWang Chen if (optlen < sizeof(struct group_req)) 674a28398baSWang Chen goto e_inval; 675a28398baSWang Chen 6761da177e4SLinus Torvalds retv = -EFAULT; 6771da177e4SLinus Torvalds if (copy_from_user(&greq, optval, sizeof(struct group_req))) 6781da177e4SLinus Torvalds break; 6791da177e4SLinus Torvalds if (greq.gr_group.ss_family != AF_INET6) { 6801da177e4SLinus Torvalds retv = -EADDRNOTAVAIL; 6811da177e4SLinus Torvalds break; 6821da177e4SLinus Torvalds } 6831da177e4SLinus Torvalds psin6 = (struct sockaddr_in6 *)&greq.gr_group; 6841da177e4SLinus Torvalds if (optname == MCAST_JOIN_GROUP) 68554ff9ef3SMarcelo Ricardo Leitner retv = ipv6_sock_mc_join(sk, greq.gr_interface, 6861da177e4SLinus Torvalds &psin6->sin6_addr); 6871da177e4SLinus Torvalds else 68854ff9ef3SMarcelo Ricardo Leitner retv = ipv6_sock_mc_drop(sk, greq.gr_interface, 6891da177e4SLinus Torvalds &psin6->sin6_addr); 6901da177e4SLinus Torvalds break; 6911da177e4SLinus Torvalds } 6921da177e4SLinus Torvalds case MCAST_JOIN_SOURCE_GROUP: 6931da177e4SLinus Torvalds case MCAST_LEAVE_SOURCE_GROUP: 6941da177e4SLinus Torvalds case MCAST_BLOCK_SOURCE: 6951da177e4SLinus Torvalds case MCAST_UNBLOCK_SOURCE: 6961da177e4SLinus Torvalds { 6971da177e4SLinus Torvalds struct group_source_req greqs; 6981da177e4SLinus Torvalds int omode, add; 6991da177e4SLinus Torvalds 700a28398baSWang Chen if (optlen < sizeof(struct group_source_req)) 7011da177e4SLinus Torvalds goto e_inval; 7021da177e4SLinus Torvalds if (copy_from_user(&greqs, optval, sizeof(greqs))) { 7031da177e4SLinus Torvalds retv = -EFAULT; 7041da177e4SLinus Torvalds break; 7051da177e4SLinus Torvalds } 7061da177e4SLinus Torvalds if (greqs.gsr_group.ss_family != AF_INET6 || 7071da177e4SLinus Torvalds greqs.gsr_source.ss_family != AF_INET6) { 7081da177e4SLinus Torvalds retv = -EADDRNOTAVAIL; 7091da177e4SLinus Torvalds break; 7101da177e4SLinus Torvalds } 7111da177e4SLinus Torvalds if (optname == MCAST_BLOCK_SOURCE) { 7121da177e4SLinus Torvalds omode = MCAST_EXCLUDE; 7131da177e4SLinus Torvalds add = 1; 7141da177e4SLinus Torvalds } else if (optname == MCAST_UNBLOCK_SOURCE) { 7151da177e4SLinus Torvalds omode = MCAST_EXCLUDE; 7161da177e4SLinus Torvalds add = 0; 7171da177e4SLinus Torvalds } else if (optname == MCAST_JOIN_SOURCE_GROUP) { 7181da177e4SLinus Torvalds struct sockaddr_in6 *psin6; 7191da177e4SLinus Torvalds 7201da177e4SLinus Torvalds psin6 = (struct sockaddr_in6 *)&greqs.gsr_group; 72154ff9ef3SMarcelo Ricardo Leitner retv = ipv6_sock_mc_join(sk, greqs.gsr_interface, 7221da177e4SLinus Torvalds &psin6->sin6_addr); 723c9e3e8b6SDavid L Stevens /* prior join w/ different source is ok */ 724c9e3e8b6SDavid L Stevens if (retv && retv != -EADDRINUSE) 7251da177e4SLinus Torvalds break; 7261da177e4SLinus Torvalds omode = MCAST_INCLUDE; 7271da177e4SLinus Torvalds add = 1; 728c9e3e8b6SDavid L Stevens } else /* MCAST_LEAVE_SOURCE_GROUP */ { 7291da177e4SLinus Torvalds omode = MCAST_INCLUDE; 7301da177e4SLinus Torvalds add = 0; 7311da177e4SLinus Torvalds } 7321da177e4SLinus Torvalds retv = ip6_mc_source(add, omode, sk, &greqs); 7331da177e4SLinus Torvalds break; 7341da177e4SLinus Torvalds } 7351da177e4SLinus Torvalds case MCAST_MSFILTER: 7361da177e4SLinus Torvalds { 7371da177e4SLinus Torvalds struct group_filter *gsf; 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds if (optlen < GROUP_FILTER_SIZE(0)) 7401da177e4SLinus Torvalds goto e_inval; 7411da177e4SLinus Torvalds if (optlen > sysctl_optmem_max) { 7421da177e4SLinus Torvalds retv = -ENOBUFS; 7431da177e4SLinus Torvalds break; 7441da177e4SLinus Torvalds } 74543727da9SAl Viro gsf = memdup_user(optval, optlen); 74643727da9SAl Viro if (IS_ERR(gsf)) { 74743727da9SAl Viro retv = PTR_ERR(gsf); 7481da177e4SLinus Torvalds break; 7491da177e4SLinus Torvalds } 7501da177e4SLinus Torvalds /* numsrc >= (4G-140)/128 overflow in 32 bits */ 7511da177e4SLinus Torvalds if (gsf->gf_numsrc >= 0x1ffffffU || 7521da177e4SLinus Torvalds gsf->gf_numsrc > sysctl_mld_max_msf) { 7531da177e4SLinus Torvalds kfree(gsf); 7541da177e4SLinus Torvalds retv = -ENOBUFS; 7551da177e4SLinus Torvalds break; 7561da177e4SLinus Torvalds } 7571da177e4SLinus Torvalds if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) { 7581da177e4SLinus Torvalds kfree(gsf); 7591da177e4SLinus Torvalds retv = -EINVAL; 7601da177e4SLinus Torvalds break; 7611da177e4SLinus Torvalds } 7621da177e4SLinus Torvalds retv = ip6_mc_msfilter(sk, gsf); 7631da177e4SLinus Torvalds kfree(gsf); 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds break; 7661da177e4SLinus Torvalds } 7671da177e4SLinus Torvalds case IPV6_ROUTER_ALERT: 768b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 769b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 770725a8ff0SDenis V. Lunev retv = ip6_ra_control(sk, val); 7711da177e4SLinus Torvalds break; 7721da177e4SLinus Torvalds case IPV6_MTU_DISCOVER: 773b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 774b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 7750b95227aSHannes Frederic Sowa if (val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_OMIT) 7761da177e4SLinus Torvalds goto e_inval; 7771da177e4SLinus Torvalds np->pmtudisc = val; 7781da177e4SLinus Torvalds retv = 0; 7791da177e4SLinus Torvalds break; 7801da177e4SLinus Torvalds case IPV6_MTU: 781b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 782b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 7831da177e4SLinus Torvalds if (val && val < IPV6_MIN_MTU) 7841da177e4SLinus Torvalds goto e_inval; 7851da177e4SLinus Torvalds np->frag_size = val; 7861da177e4SLinus Torvalds retv = 0; 7871da177e4SLinus Torvalds break; 7881da177e4SLinus Torvalds case IPV6_RECVERR: 789b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 790b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 7911da177e4SLinus Torvalds np->recverr = valbool; 7921da177e4SLinus Torvalds if (!val) 7931da177e4SLinus Torvalds skb_queue_purge(&sk->sk_error_queue); 7941da177e4SLinus Torvalds retv = 0; 7951da177e4SLinus Torvalds break; 7961da177e4SLinus Torvalds case IPV6_FLOWINFO_SEND: 797b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 798b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 7991da177e4SLinus Torvalds np->sndflow = valbool; 8001da177e4SLinus Torvalds retv = 0; 8011da177e4SLinus Torvalds break; 8021da177e4SLinus Torvalds case IPV6_FLOWLABEL_MGR: 8031da177e4SLinus Torvalds retv = ipv6_flowlabel_opt(sk, optval, optlen); 8041da177e4SLinus Torvalds break; 8051da177e4SLinus Torvalds case IPV6_IPSEC_POLICY: 8061da177e4SLinus Torvalds case IPV6_XFRM_POLICY: 8076fc0b4a7SHerbert Xu retv = -EPERM; 808af31f412SEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 8096fc0b4a7SHerbert Xu break; 8101da177e4SLinus Torvalds retv = xfrm_user_policy(sk, optname, optval, optlen); 8111da177e4SLinus Torvalds break; 8121da177e4SLinus Torvalds 8137cbca67cSYOSHIFUJI Hideaki case IPV6_ADDR_PREFERENCES: 8147cbca67cSYOSHIFUJI Hideaki { 8157cbca67cSYOSHIFUJI Hideaki unsigned int pref = 0; 8167cbca67cSYOSHIFUJI Hideaki unsigned int prefmask = ~0; 8177cbca67cSYOSHIFUJI Hideaki 818b2a9d7c2SYOSHIFUJI Hideaki if (optlen < sizeof(int)) 819b2a9d7c2SYOSHIFUJI Hideaki goto e_inval; 820b2a9d7c2SYOSHIFUJI Hideaki 8217cbca67cSYOSHIFUJI Hideaki retv = -EINVAL; 8227cbca67cSYOSHIFUJI Hideaki 8237cbca67cSYOSHIFUJI Hideaki /* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */ 8247cbca67cSYOSHIFUJI Hideaki switch (val & (IPV6_PREFER_SRC_PUBLIC| 8257cbca67cSYOSHIFUJI Hideaki IPV6_PREFER_SRC_TMP| 8267cbca67cSYOSHIFUJI Hideaki IPV6_PREFER_SRC_PUBTMP_DEFAULT)) { 8277cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_PUBLIC: 8287cbca67cSYOSHIFUJI Hideaki pref |= IPV6_PREFER_SRC_PUBLIC; 8297cbca67cSYOSHIFUJI Hideaki break; 8307cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_TMP: 8317cbca67cSYOSHIFUJI Hideaki pref |= IPV6_PREFER_SRC_TMP; 8327cbca67cSYOSHIFUJI Hideaki break; 8337cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_PUBTMP_DEFAULT: 8347cbca67cSYOSHIFUJI Hideaki break; 8357cbca67cSYOSHIFUJI Hideaki case 0: 8367cbca67cSYOSHIFUJI Hideaki goto pref_skip_pubtmp; 8377cbca67cSYOSHIFUJI Hideaki default: 8387cbca67cSYOSHIFUJI Hideaki goto e_inval; 8391da177e4SLinus Torvalds } 8407cbca67cSYOSHIFUJI Hideaki 8417cbca67cSYOSHIFUJI Hideaki prefmask &= ~(IPV6_PREFER_SRC_PUBLIC| 8427cbca67cSYOSHIFUJI Hideaki IPV6_PREFER_SRC_TMP); 8437cbca67cSYOSHIFUJI Hideaki pref_skip_pubtmp: 8447cbca67cSYOSHIFUJI Hideaki 8457cbca67cSYOSHIFUJI Hideaki /* check HOME/COA conflicts */ 8467cbca67cSYOSHIFUJI Hideaki switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) { 8477cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_HOME: 8487cbca67cSYOSHIFUJI Hideaki break; 8497cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_COA: 8507cbca67cSYOSHIFUJI Hideaki pref |= IPV6_PREFER_SRC_COA; 8517cbca67cSYOSHIFUJI Hideaki case 0: 8527cbca67cSYOSHIFUJI Hideaki goto pref_skip_coa; 8537cbca67cSYOSHIFUJI Hideaki default: 8547cbca67cSYOSHIFUJI Hideaki goto e_inval; 8557cbca67cSYOSHIFUJI Hideaki } 8567cbca67cSYOSHIFUJI Hideaki 8577cbca67cSYOSHIFUJI Hideaki prefmask &= ~IPV6_PREFER_SRC_COA; 8587cbca67cSYOSHIFUJI Hideaki pref_skip_coa: 8597cbca67cSYOSHIFUJI Hideaki 8607cbca67cSYOSHIFUJI Hideaki /* check CGA/NONCGA conflicts */ 8617cbca67cSYOSHIFUJI Hideaki switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) { 8627cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_CGA: 8637cbca67cSYOSHIFUJI Hideaki case IPV6_PREFER_SRC_NONCGA: 8647cbca67cSYOSHIFUJI Hideaki case 0: 8657cbca67cSYOSHIFUJI Hideaki break; 8667cbca67cSYOSHIFUJI Hideaki default: 8677cbca67cSYOSHIFUJI Hideaki goto e_inval; 8687cbca67cSYOSHIFUJI Hideaki } 8697cbca67cSYOSHIFUJI Hideaki 8707cbca67cSYOSHIFUJI Hideaki np->srcprefs = (np->srcprefs & prefmask) | pref; 8717cbca67cSYOSHIFUJI Hideaki retv = 0; 8727cbca67cSYOSHIFUJI Hideaki 8737cbca67cSYOSHIFUJI Hideaki break; 8747cbca67cSYOSHIFUJI Hideaki } 875e802af9cSStephen Hemminger case IPV6_MINHOPCOUNT: 876e802af9cSStephen Hemminger if (optlen < sizeof(int)) 877e802af9cSStephen Hemminger goto e_inval; 878e802af9cSStephen Hemminger if (val < 0 || val > 255) 879e802af9cSStephen Hemminger goto e_inval; 880e802af9cSStephen Hemminger np->min_hopcount = val; 881d4596badSHannes Frederic Sowa retv = 0; 882793b1473SBrian Haley break; 883793b1473SBrian Haley case IPV6_DONTFRAG: 884793b1473SBrian Haley np->dontfrag = valbool; 885e802af9cSStephen Hemminger retv = 0; 886e802af9cSStephen Hemminger break; 887cb1ce2efSTom Herbert case IPV6_AUTOFLOWLABEL: 888cb1ce2efSTom Herbert np->autoflowlabel = valbool; 889513674b5SShaohua Li np->autoflowlabel_set = 1; 890cb1ce2efSTom Herbert retv = 0; 891cb1ce2efSTom Herbert break; 8920cc0aa61SWillem de Bruijn case IPV6_RECVFRAGSIZE: 8930cc0aa61SWillem de Bruijn np->rxopt.bits.recvfragsize = valbool; 8940cc0aa61SWillem de Bruijn retv = 0; 8950cc0aa61SWillem de Bruijn break; 8967cbca67cSYOSHIFUJI Hideaki } 8977cbca67cSYOSHIFUJI Hideaki 8981da177e4SLinus Torvalds release_sock(sk); 899baf606d9SMarcelo Ricardo Leitner if (needs_rtnl) 900baf606d9SMarcelo Ricardo Leitner rtnl_unlock(); 9011da177e4SLinus Torvalds 9021da177e4SLinus Torvalds return retv; 9031da177e4SLinus Torvalds 9041da177e4SLinus Torvalds e_inval: 9051da177e4SLinus Torvalds release_sock(sk); 906baf606d9SMarcelo Ricardo Leitner if (needs_rtnl) 907baf606d9SMarcelo Ricardo Leitner rtnl_unlock(); 9081da177e4SLinus Torvalds return -EINVAL; 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds 9113fdadf7dSDmitry Mishin int ipv6_setsockopt(struct sock *sk, int level, int optname, 912b7058842SDavid S. Miller char __user *optval, unsigned int optlen) 9133fdadf7dSDmitry Mishin { 9143fdadf7dSDmitry Mishin int err; 9153fdadf7dSDmitry Mishin 9163fdadf7dSDmitry Mishin if (level == SOL_IP && sk->sk_type != SOCK_RAW) 9173fdadf7dSDmitry Mishin return udp_prot.setsockopt(sk, level, optname, optval, optlen); 9183fdadf7dSDmitry Mishin 9193fdadf7dSDmitry Mishin if (level != SOL_IPV6) 9203fdadf7dSDmitry Mishin return -ENOPROTOOPT; 9213fdadf7dSDmitry Mishin 9223fdadf7dSDmitry Mishin err = do_ipv6_setsockopt(sk, level, optname, optval, optlen); 9233fdadf7dSDmitry Mishin #ifdef CONFIG_NETFILTER 9243fdadf7dSDmitry Mishin /* we need to exclude all possible ENOPROTOOPTs except default case */ 9253fdadf7dSDmitry Mishin if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY && 9263f34cfaeSPaolo Abeni optname != IPV6_XFRM_POLICY) 9273f34cfaeSPaolo Abeni err = nf_setsockopt(sk, PF_INET6, optname, optval, optlen); 9283fdadf7dSDmitry Mishin #endif 9293fdadf7dSDmitry Mishin return err; 9303fdadf7dSDmitry Mishin } 9317159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(ipv6_setsockopt); 9323fdadf7dSDmitry Mishin 9333fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 9343fdadf7dSDmitry Mishin int compat_ipv6_setsockopt(struct sock *sk, int level, int optname, 935b7058842SDavid S. Miller char __user *optval, unsigned int optlen) 9363fdadf7dSDmitry Mishin { 9373fdadf7dSDmitry Mishin int err; 9383fdadf7dSDmitry Mishin 9393fdadf7dSDmitry Mishin if (level == SOL_IP && sk->sk_type != SOCK_RAW) { 940543d9cfeSArnaldo Carvalho de Melo if (udp_prot.compat_setsockopt != NULL) 941543d9cfeSArnaldo Carvalho de Melo return udp_prot.compat_setsockopt(sk, level, optname, 942543d9cfeSArnaldo Carvalho de Melo optval, optlen); 943543d9cfeSArnaldo Carvalho de Melo return udp_prot.setsockopt(sk, level, optname, optval, optlen); 9443fdadf7dSDmitry Mishin } 9453fdadf7dSDmitry Mishin 9463fdadf7dSDmitry Mishin if (level != SOL_IPV6) 9473fdadf7dSDmitry Mishin return -ENOPROTOOPT; 9483fdadf7dSDmitry Mishin 949dae50295SDavid L Stevens if (optname >= MCAST_JOIN_GROUP && optname <= MCAST_MSFILTER) 950dae50295SDavid L Stevens return compat_mc_setsockopt(sk, level, optname, optval, optlen, 951dae50295SDavid L Stevens ipv6_setsockopt); 952dae50295SDavid L Stevens 9533fdadf7dSDmitry Mishin err = do_ipv6_setsockopt(sk, level, optname, optval, optlen); 9543fdadf7dSDmitry Mishin #ifdef CONFIG_NETFILTER 9553fdadf7dSDmitry Mishin /* we need to exclude all possible ENOPROTOOPTs except default case */ 9563fdadf7dSDmitry Mishin if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY && 9573f34cfaeSPaolo Abeni optname != IPV6_XFRM_POLICY) 9583f34cfaeSPaolo Abeni err = compat_nf_setsockopt(sk, PF_INET6, optname, optval, 9593f34cfaeSPaolo Abeni optlen); 9603fdadf7dSDmitry Mishin #endif 9613fdadf7dSDmitry Mishin return err; 9623fdadf7dSDmitry Mishin } 963543d9cfeSArnaldo Carvalho de Melo EXPORT_SYMBOL(compat_ipv6_setsockopt); 9643fdadf7dSDmitry Mishin #endif 9653fdadf7dSDmitry Mishin 96628693079SDavid S. Miller static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_txoptions *opt, 9674c6510a7SYOSHIFUJI Hideaki int optname, char __user *optval, int len) 968333fad53SYOSHIFUJI Hideaki { 96928693079SDavid S. Miller struct ipv6_opt_hdr *hdr; 97028693079SDavid S. Miller 9714c6510a7SYOSHIFUJI Hideaki if (!opt) 972333fad53SYOSHIFUJI Hideaki return 0; 9734c6510a7SYOSHIFUJI Hideaki 9744c6510a7SYOSHIFUJI Hideaki switch (optname) { 9754c6510a7SYOSHIFUJI Hideaki case IPV6_HOPOPTS: 97628693079SDavid S. Miller hdr = opt->hopopt; 9774c6510a7SYOSHIFUJI Hideaki break; 9784c6510a7SYOSHIFUJI Hideaki case IPV6_RTHDRDSTOPTS: 9794c6510a7SYOSHIFUJI Hideaki hdr = opt->dst0opt; 9804c6510a7SYOSHIFUJI Hideaki break; 9814c6510a7SYOSHIFUJI Hideaki case IPV6_RTHDR: 9824c6510a7SYOSHIFUJI Hideaki hdr = (struct ipv6_opt_hdr *)opt->srcrt; 9834c6510a7SYOSHIFUJI Hideaki break; 9844c6510a7SYOSHIFUJI Hideaki case IPV6_DSTOPTS: 9854c6510a7SYOSHIFUJI Hideaki hdr = opt->dst1opt; 9864c6510a7SYOSHIFUJI Hideaki break; 9874c6510a7SYOSHIFUJI Hideaki default: 9884c6510a7SYOSHIFUJI Hideaki return -EINVAL; /* should not happen */ 9894c6510a7SYOSHIFUJI Hideaki } 9904c6510a7SYOSHIFUJI Hideaki 9914c6510a7SYOSHIFUJI Hideaki if (!hdr) 9924c6510a7SYOSHIFUJI Hideaki return 0; 99328693079SDavid S. Miller 994d2b02ed9SChris Wright len = min_t(unsigned int, len, ipv6_optlen(hdr)); 995660adc6eSIlpo Järvinen if (copy_to_user(optval, hdr, len)) 996333fad53SYOSHIFUJI Hideaki return -EFAULT; 99795b496b6SYang Hongyang return len; 998333fad53SYOSHIFUJI Hideaki } 999333fad53SYOSHIFUJI Hideaki 10003fdadf7dSDmitry Mishin static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, 100195c96174SEric Dumazet char __user *optval, int __user *optlen, unsigned int flags) 10021da177e4SLinus Torvalds { 10031da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 10041da177e4SLinus Torvalds int len; 10051da177e4SLinus Torvalds int val; 10061da177e4SLinus Torvalds 10077bc570c8SYOSHIFUJI Hideaki if (ip6_mroute_opt(optname)) 10087bc570c8SYOSHIFUJI Hideaki return ip6_mroute_getsockopt(sk, optname, optval, optlen); 10097bc570c8SYOSHIFUJI Hideaki 10101da177e4SLinus Torvalds if (get_user(len, optlen)) 10111da177e4SLinus Torvalds return -EFAULT; 10121da177e4SLinus Torvalds switch (optname) { 10131da177e4SLinus Torvalds case IPV6_ADDRFORM: 10141da177e4SLinus Torvalds if (sk->sk_protocol != IPPROTO_UDP && 1015ba4e58ecSGerrit Renker sk->sk_protocol != IPPROTO_UDPLITE && 10161da177e4SLinus Torvalds sk->sk_protocol != IPPROTO_TCP) 10171717699cSYOSHIFUJI Hideaki return -ENOPROTOOPT; 10181da177e4SLinus Torvalds if (sk->sk_state != TCP_ESTABLISHED) 10191da177e4SLinus Torvalds return -ENOTCONN; 10201da177e4SLinus Torvalds val = sk->sk_family; 10211da177e4SLinus Torvalds break; 10221da177e4SLinus Torvalds case MCAST_MSFILTER: 10231da177e4SLinus Torvalds { 10241da177e4SLinus Torvalds struct group_filter gsf; 10251da177e4SLinus Torvalds int err; 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvalds if (len < GROUP_FILTER_SIZE(0)) 10281da177e4SLinus Torvalds return -EINVAL; 10291da177e4SLinus Torvalds if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0))) 10301da177e4SLinus Torvalds return -EFAULT; 103120c61fbdSYOSHIFUJI Hideaki if (gsf.gf_group.ss_family != AF_INET6) 103220c61fbdSYOSHIFUJI Hideaki return -EADDRNOTAVAIL; 10331da177e4SLinus Torvalds lock_sock(sk); 10341da177e4SLinus Torvalds err = ip6_mc_msfget(sk, &gsf, 10351da177e4SLinus Torvalds (struct group_filter __user *)optval, optlen); 10361da177e4SLinus Torvalds release_sock(sk); 10371da177e4SLinus Torvalds return err; 10381da177e4SLinus Torvalds } 10391da177e4SLinus Torvalds 1040333fad53SYOSHIFUJI Hideaki case IPV6_2292PKTOPTIONS: 10411da177e4SLinus Torvalds { 10421da177e4SLinus Torvalds struct msghdr msg; 10431da177e4SLinus Torvalds struct sk_buff *skb; 10441da177e4SLinus Torvalds 10451da177e4SLinus Torvalds if (sk->sk_type != SOCK_STREAM) 10461da177e4SLinus Torvalds return -ENOPROTOOPT; 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds msg.msg_control = optval; 10491da177e4SLinus Torvalds msg.msg_controllen = len; 105098e77438SDaniel Baluta msg.msg_flags = flags; 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds lock_sock(sk); 10531da177e4SLinus Torvalds skb = np->pktoptions; 10541da177e4SLinus Torvalds if (skb) 10554b261c75SHannes Frederic Sowa ip6_datagram_recv_ctl(sk, &msg, skb); 10561dc7b90fSEric Dumazet release_sock(sk); 10571dc7b90fSEric Dumazet if (!skb) { 10581da177e4SLinus Torvalds if (np->rxopt.bits.rxinfo) { 10591da177e4SLinus Torvalds struct in6_pktinfo src_info; 1060f250dcdaSYang Hongyang src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : 1061f250dcdaSYang Hongyang np->sticky_pktinfo.ipi6_ifindex; 1062efe4208fSEric Dumazet src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr : np->sticky_pktinfo.ipi6_addr; 10631da177e4SLinus Torvalds put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info); 10641da177e4SLinus Torvalds } 10651da177e4SLinus Torvalds if (np->rxopt.bits.rxhlim) { 10661da177e4SLinus Torvalds int hlim = np->mcast_hops; 10671da177e4SLinus Torvalds put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim); 10681da177e4SLinus Torvalds } 10694c507d28SJiri Benc if (np->rxopt.bits.rxtclass) { 1070d76ed22bSLi RongQing int tclass = (int)ip6_tclass(np->rcv_flowinfo); 1071d76ed22bSLi RongQing 10724c507d28SJiri Benc put_cmsg(&msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass); 10734c507d28SJiri Benc } 1074333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.rxoinfo) { 1075333fad53SYOSHIFUJI Hideaki struct in6_pktinfo src_info; 1076f250dcdaSYang Hongyang src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : 1077f250dcdaSYang Hongyang np->sticky_pktinfo.ipi6_ifindex; 1078efe4208fSEric Dumazet src_info.ipi6_addr = np->mcast_oif ? sk->sk_v6_daddr : 1079efe4208fSEric Dumazet np->sticky_pktinfo.ipi6_addr; 1080333fad53SYOSHIFUJI Hideaki put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info); 1081333fad53SYOSHIFUJI Hideaki } 1082333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.rxohlim) { 1083333fad53SYOSHIFUJI Hideaki int hlim = np->mcast_hops; 1084333fad53SYOSHIFUJI Hideaki put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim); 1085333fad53SYOSHIFUJI Hideaki } 10861397ed35SFlorent Fourcot if (np->rxopt.bits.rxflow) { 108768536053SFlorent Fourcot __be32 flowinfo = np->rcv_flowinfo; 108868536053SFlorent Fourcot 10891397ed35SFlorent Fourcot put_cmsg(&msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo); 10901397ed35SFlorent Fourcot } 10911da177e4SLinus Torvalds } 10921da177e4SLinus Torvalds len -= msg.msg_controllen; 10931da177e4SLinus Torvalds return put_user(len, optlen); 10941da177e4SLinus Torvalds } 10951da177e4SLinus Torvalds case IPV6_MTU: 10961da177e4SLinus Torvalds { 10971da177e4SLinus Torvalds struct dst_entry *dst; 1098b6c6712aSEric Dumazet 10991da177e4SLinus Torvalds val = 0; 1100b6c6712aSEric Dumazet rcu_read_lock(); 1101b6c6712aSEric Dumazet dst = __sk_dst_get(sk); 1102b6c6712aSEric Dumazet if (dst) 11031da177e4SLinus Torvalds val = dst_mtu(dst); 1104b6c6712aSEric Dumazet rcu_read_unlock(); 11051da177e4SLinus Torvalds if (!val) 11061da177e4SLinus Torvalds return -ENOTCONN; 11071da177e4SLinus Torvalds break; 11081da177e4SLinus Torvalds } 11091da177e4SLinus Torvalds 11101da177e4SLinus Torvalds case IPV6_V6ONLY: 11119fe516baSEric Dumazet val = sk->sk_ipv6only; 11121da177e4SLinus Torvalds break; 11131da177e4SLinus Torvalds 1114333fad53SYOSHIFUJI Hideaki case IPV6_RECVPKTINFO: 11151da177e4SLinus Torvalds val = np->rxopt.bits.rxinfo; 11161da177e4SLinus Torvalds break; 11171da177e4SLinus Torvalds 1118333fad53SYOSHIFUJI Hideaki case IPV6_2292PKTINFO: 1119333fad53SYOSHIFUJI Hideaki val = np->rxopt.bits.rxoinfo; 1120333fad53SYOSHIFUJI Hideaki break; 1121333fad53SYOSHIFUJI Hideaki 1122333fad53SYOSHIFUJI Hideaki case IPV6_RECVHOPLIMIT: 11231da177e4SLinus Torvalds val = np->rxopt.bits.rxhlim; 11241da177e4SLinus Torvalds break; 11251da177e4SLinus Torvalds 1126333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPLIMIT: 1127333fad53SYOSHIFUJI Hideaki val = np->rxopt.bits.rxohlim; 1128333fad53SYOSHIFUJI Hideaki break; 1129333fad53SYOSHIFUJI Hideaki 1130333fad53SYOSHIFUJI Hideaki case IPV6_RECVRTHDR: 11311da177e4SLinus Torvalds val = np->rxopt.bits.srcrt; 11321da177e4SLinus Torvalds break; 11331da177e4SLinus Torvalds 1134333fad53SYOSHIFUJI Hideaki case IPV6_2292RTHDR: 1135333fad53SYOSHIFUJI Hideaki val = np->rxopt.bits.osrcrt; 1136333fad53SYOSHIFUJI Hideaki break; 1137333fad53SYOSHIFUJI Hideaki 11381da177e4SLinus Torvalds case IPV6_HOPOPTS: 1139333fad53SYOSHIFUJI Hideaki case IPV6_RTHDRDSTOPTS: 1140333fad53SYOSHIFUJI Hideaki case IPV6_RTHDR: 1141333fad53SYOSHIFUJI Hideaki case IPV6_DSTOPTS: 1142333fad53SYOSHIFUJI Hideaki { 114345f6fad8SEric Dumazet struct ipv6_txoptions *opt; 1144333fad53SYOSHIFUJI Hideaki 1145333fad53SYOSHIFUJI Hideaki lock_sock(sk); 11461e1d04e6SHannes Frederic Sowa opt = rcu_dereference_protected(np->opt, 11471e1d04e6SHannes Frederic Sowa lockdep_sock_is_held(sk)); 114845f6fad8SEric Dumazet len = ipv6_getsockopt_sticky(sk, opt, optname, optval, len); 1149333fad53SYOSHIFUJI Hideaki release_sock(sk); 115005335c22SYang Hongyang /* check if ipv6_getsockopt_sticky() returns err code */ 115105335c22SYang Hongyang if (len < 0) 115205335c22SYang Hongyang return len; 1153333fad53SYOSHIFUJI Hideaki return put_user(len, optlen); 1154333fad53SYOSHIFUJI Hideaki } 1155333fad53SYOSHIFUJI Hideaki 1156333fad53SYOSHIFUJI Hideaki case IPV6_RECVHOPOPTS: 11571da177e4SLinus Torvalds val = np->rxopt.bits.hopopts; 11581da177e4SLinus Torvalds break; 11591da177e4SLinus Torvalds 1160333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPOPTS: 1161333fad53SYOSHIFUJI Hideaki val = np->rxopt.bits.ohopopts; 1162333fad53SYOSHIFUJI Hideaki break; 1163333fad53SYOSHIFUJI Hideaki 1164333fad53SYOSHIFUJI Hideaki case IPV6_RECVDSTOPTS: 11651da177e4SLinus Torvalds val = np->rxopt.bits.dstopts; 11661da177e4SLinus Torvalds break; 11671da177e4SLinus Torvalds 1168333fad53SYOSHIFUJI Hideaki case IPV6_2292DSTOPTS: 1169333fad53SYOSHIFUJI Hideaki val = np->rxopt.bits.odstopts; 1170333fad53SYOSHIFUJI Hideaki break; 1171333fad53SYOSHIFUJI Hideaki 117241a1f8eaSYOSHIFUJI Hideaki case IPV6_TCLASS: 117341a1f8eaSYOSHIFUJI Hideaki val = np->tclass; 117441a1f8eaSYOSHIFUJI Hideaki break; 117541a1f8eaSYOSHIFUJI Hideaki 117641a1f8eaSYOSHIFUJI Hideaki case IPV6_RECVTCLASS: 117741a1f8eaSYOSHIFUJI Hideaki val = np->rxopt.bits.rxtclass; 117841a1f8eaSYOSHIFUJI Hideaki break; 117941a1f8eaSYOSHIFUJI Hideaki 11801da177e4SLinus Torvalds case IPV6_FLOWINFO: 11811da177e4SLinus Torvalds val = np->rxopt.bits.rxflow; 11821da177e4SLinus Torvalds break; 11831da177e4SLinus Torvalds 1184793b1473SBrian Haley case IPV6_RECVPATHMTU: 1185793b1473SBrian Haley val = np->rxopt.bits.rxpmtu; 1186793b1473SBrian Haley break; 1187793b1473SBrian Haley 1188793b1473SBrian Haley case IPV6_PATHMTU: 1189793b1473SBrian Haley { 1190793b1473SBrian Haley struct dst_entry *dst; 1191793b1473SBrian Haley struct ip6_mtuinfo mtuinfo; 1192793b1473SBrian Haley 1193793b1473SBrian Haley if (len < sizeof(mtuinfo)) 1194793b1473SBrian Haley return -EINVAL; 1195793b1473SBrian Haley 1196793b1473SBrian Haley len = sizeof(mtuinfo); 1197793b1473SBrian Haley memset(&mtuinfo, 0, sizeof(mtuinfo)); 1198793b1473SBrian Haley 1199793b1473SBrian Haley rcu_read_lock(); 1200793b1473SBrian Haley dst = __sk_dst_get(sk); 1201793b1473SBrian Haley if (dst) 1202793b1473SBrian Haley mtuinfo.ip6m_mtu = dst_mtu(dst); 1203793b1473SBrian Haley rcu_read_unlock(); 1204793b1473SBrian Haley if (!mtuinfo.ip6m_mtu) 1205793b1473SBrian Haley return -ENOTCONN; 1206793b1473SBrian Haley 1207793b1473SBrian Haley if (put_user(len, optlen)) 1208793b1473SBrian Haley return -EFAULT; 1209793b1473SBrian Haley if (copy_to_user(optval, &mtuinfo, len)) 1210793b1473SBrian Haley return -EFAULT; 1211793b1473SBrian Haley 1212793b1473SBrian Haley return 0; 1213793b1473SBrian Haley } 1214793b1473SBrian Haley 12156c468622SBalazs Scheidler case IPV6_TRANSPARENT: 12166c468622SBalazs Scheidler val = inet_sk(sk)->transparent; 12176c468622SBalazs Scheidler break; 12186c468622SBalazs Scheidler 121984e14fe3SMaciej Żenczykowski case IPV6_FREEBIND: 122084e14fe3SMaciej Żenczykowski val = inet_sk(sk)->freebind; 122184e14fe3SMaciej Żenczykowski break; 122284e14fe3SMaciej Żenczykowski 12236c468622SBalazs Scheidler case IPV6_RECVORIGDSTADDR: 12246c468622SBalazs Scheidler val = np->rxopt.bits.rxorigdstaddr; 12256c468622SBalazs Scheidler break; 12266c468622SBalazs Scheidler 12271da177e4SLinus Torvalds case IPV6_UNICAST_HOPS: 12281da177e4SLinus Torvalds case IPV6_MULTICAST_HOPS: 1229befffe90SBrian Haley { 1230befffe90SBrian Haley struct dst_entry *dst; 1231befffe90SBrian Haley 1232befffe90SBrian Haley if (optname == IPV6_UNICAST_HOPS) 1233befffe90SBrian Haley val = np->hop_limit; 1234befffe90SBrian Haley else 12351da177e4SLinus Torvalds val = np->mcast_hops; 1236befffe90SBrian Haley 1237b6c6712aSEric Dumazet if (val < 0) { 1238b6c6712aSEric Dumazet rcu_read_lock(); 1239b6c6712aSEric Dumazet dst = __sk_dst_get(sk); 1240b6c6712aSEric Dumazet if (dst) 12416b75d090SYOSHIFUJI Hideaki val = ip6_dst_hoplimit(dst); 1242b6c6712aSEric Dumazet rcu_read_unlock(); 1243befffe90SBrian Haley } 1244b6c6712aSEric Dumazet 1245befffe90SBrian Haley if (val < 0) 124653b7997fSYOSHIFUJI Hideaki val = sock_net(sk)->ipv6.devconf_all->hop_limit; 12471da177e4SLinus Torvalds break; 1248befffe90SBrian Haley } 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvalds case IPV6_MULTICAST_LOOP: 12511da177e4SLinus Torvalds val = np->mc_loop; 12521da177e4SLinus Torvalds break; 12531da177e4SLinus Torvalds 12541da177e4SLinus Torvalds case IPV6_MULTICAST_IF: 12551da177e4SLinus Torvalds val = np->mcast_oif; 12561da177e4SLinus Torvalds break; 12571da177e4SLinus Torvalds 1258c4062dfcSErich E. Hoover case IPV6_UNICAST_IF: 1259c4062dfcSErich E. Hoover val = (__force int)htonl((__u32) np->ucast_oif); 1260c4062dfcSErich E. Hoover break; 1261c4062dfcSErich E. Hoover 12621da177e4SLinus Torvalds case IPV6_MTU_DISCOVER: 12631da177e4SLinus Torvalds val = np->pmtudisc; 12641da177e4SLinus Torvalds break; 12651da177e4SLinus Torvalds 12661da177e4SLinus Torvalds case IPV6_RECVERR: 12671da177e4SLinus Torvalds val = np->recverr; 12681da177e4SLinus Torvalds break; 12691da177e4SLinus Torvalds 12701da177e4SLinus Torvalds case IPV6_FLOWINFO_SEND: 12711da177e4SLinus Torvalds val = np->sndflow; 12721da177e4SLinus Torvalds break; 12731da177e4SLinus Torvalds 12743fdfa5ffSFlorent Fourcot case IPV6_FLOWLABEL_MGR: 12753fdfa5ffSFlorent Fourcot { 12763fdfa5ffSFlorent Fourcot struct in6_flowlabel_req freq; 127746e5f401SFlorent Fourcot int flags; 12783fdfa5ffSFlorent Fourcot 12793fdfa5ffSFlorent Fourcot if (len < sizeof(freq)) 12803fdfa5ffSFlorent Fourcot return -EINVAL; 12813fdfa5ffSFlorent Fourcot 12823fdfa5ffSFlorent Fourcot if (copy_from_user(&freq, optval, sizeof(freq))) 12833fdfa5ffSFlorent Fourcot return -EFAULT; 12843fdfa5ffSFlorent Fourcot 12853fdfa5ffSFlorent Fourcot if (freq.flr_action != IPV6_FL_A_GET) 12863fdfa5ffSFlorent Fourcot return -EINVAL; 12873fdfa5ffSFlorent Fourcot 12883fdfa5ffSFlorent Fourcot len = sizeof(freq); 128946e5f401SFlorent Fourcot flags = freq.flr_flags; 129046e5f401SFlorent Fourcot 12913fdfa5ffSFlorent Fourcot memset(&freq, 0, sizeof(freq)); 12923fdfa5ffSFlorent Fourcot 129346e5f401SFlorent Fourcot val = ipv6_flowlabel_opt_get(sk, &freq, flags); 12943fdfa5ffSFlorent Fourcot if (val < 0) 12953fdfa5ffSFlorent Fourcot return val; 12963fdfa5ffSFlorent Fourcot 12973fdfa5ffSFlorent Fourcot if (put_user(len, optlen)) 12983fdfa5ffSFlorent Fourcot return -EFAULT; 12993fdfa5ffSFlorent Fourcot if (copy_to_user(optval, &freq, len)) 13003fdfa5ffSFlorent Fourcot return -EFAULT; 13013fdfa5ffSFlorent Fourcot 13023fdfa5ffSFlorent Fourcot return 0; 13033fdfa5ffSFlorent Fourcot } 13043fdfa5ffSFlorent Fourcot 13057cbca67cSYOSHIFUJI Hideaki case IPV6_ADDR_PREFERENCES: 13067cbca67cSYOSHIFUJI Hideaki val = 0; 13077cbca67cSYOSHIFUJI Hideaki 13087cbca67cSYOSHIFUJI Hideaki if (np->srcprefs & IPV6_PREFER_SRC_TMP) 13097cbca67cSYOSHIFUJI Hideaki val |= IPV6_PREFER_SRC_TMP; 13107cbca67cSYOSHIFUJI Hideaki else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC) 13117cbca67cSYOSHIFUJI Hideaki val |= IPV6_PREFER_SRC_PUBLIC; 13127cbca67cSYOSHIFUJI Hideaki else { 13137cbca67cSYOSHIFUJI Hideaki /* XXX: should we return system default? */ 13147cbca67cSYOSHIFUJI Hideaki val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT; 13157cbca67cSYOSHIFUJI Hideaki } 13167cbca67cSYOSHIFUJI Hideaki 13177cbca67cSYOSHIFUJI Hideaki if (np->srcprefs & IPV6_PREFER_SRC_COA) 13187cbca67cSYOSHIFUJI Hideaki val |= IPV6_PREFER_SRC_COA; 13197cbca67cSYOSHIFUJI Hideaki else 13207cbca67cSYOSHIFUJI Hideaki val |= IPV6_PREFER_SRC_HOME; 13217cbca67cSYOSHIFUJI Hideaki break; 13227cbca67cSYOSHIFUJI Hideaki 1323e802af9cSStephen Hemminger case IPV6_MINHOPCOUNT: 1324e802af9cSStephen Hemminger val = np->min_hopcount; 1325e802af9cSStephen Hemminger break; 1326e802af9cSStephen Hemminger 1327793b1473SBrian Haley case IPV6_DONTFRAG: 1328793b1473SBrian Haley val = np->dontfrag; 1329793b1473SBrian Haley break; 1330793b1473SBrian Haley 1331cb1ce2efSTom Herbert case IPV6_AUTOFLOWLABEL: 1332e9191ffbSBen Hutchings val = ip6_autoflowlabel(sock_net(sk), np); 1333cb1ce2efSTom Herbert break; 1334cb1ce2efSTom Herbert 13350cc0aa61SWillem de Bruijn case IPV6_RECVFRAGSIZE: 13360cc0aa61SWillem de Bruijn val = np->rxopt.bits.recvfragsize; 13370cc0aa61SWillem de Bruijn break; 13380cc0aa61SWillem de Bruijn 13391da177e4SLinus Torvalds default: 1340cf6fc4a9SWei Yongjun return -ENOPROTOOPT; 13411da177e4SLinus Torvalds } 13421da177e4SLinus Torvalds len = min_t(unsigned int, sizeof(int), len); 13431da177e4SLinus Torvalds if (put_user(len, optlen)) 13441da177e4SLinus Torvalds return -EFAULT; 13451da177e4SLinus Torvalds if (copy_to_user(optval, &val, len)) 13461da177e4SLinus Torvalds return -EFAULT; 13471da177e4SLinus Torvalds return 0; 13481da177e4SLinus Torvalds } 13491da177e4SLinus Torvalds 13503fdadf7dSDmitry Mishin int ipv6_getsockopt(struct sock *sk, int level, int optname, 13513fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 13523fdadf7dSDmitry Mishin { 13533fdadf7dSDmitry Mishin int err; 13543fdadf7dSDmitry Mishin 13553fdadf7dSDmitry Mishin if (level == SOL_IP && sk->sk_type != SOCK_RAW) 13563fdadf7dSDmitry Mishin return udp_prot.getsockopt(sk, level, optname, optval, optlen); 13573fdadf7dSDmitry Mishin 13583fdadf7dSDmitry Mishin if (level != SOL_IPV6) 13593fdadf7dSDmitry Mishin return -ENOPROTOOPT; 13603fdadf7dSDmitry Mishin 136198e77438SDaniel Baluta err = do_ipv6_getsockopt(sk, level, optname, optval, optlen, 0); 13623fdadf7dSDmitry Mishin #ifdef CONFIG_NETFILTER 1363cf6fc4a9SWei Yongjun /* we need to exclude all possible ENOPROTOOPTs except default case */ 1364cf6fc4a9SWei Yongjun if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) { 13653fdadf7dSDmitry Mishin int len; 13663fdadf7dSDmitry Mishin 13673fdadf7dSDmitry Mishin if (get_user(len, optlen)) 13683fdadf7dSDmitry Mishin return -EFAULT; 13693fdadf7dSDmitry Mishin 137001ea306fSPaolo Abeni err = nf_getsockopt(sk, PF_INET6, optname, optval, &len); 13713fdadf7dSDmitry Mishin if (err >= 0) 13723fdadf7dSDmitry Mishin err = put_user(len, optlen); 13733fdadf7dSDmitry Mishin } 13743fdadf7dSDmitry Mishin #endif 13753fdadf7dSDmitry Mishin return err; 13763fdadf7dSDmitry Mishin } 13777159039aSYOSHIFUJI Hideaki EXPORT_SYMBOL(ipv6_getsockopt); 13787159039aSYOSHIFUJI Hideaki 13793fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 13803fdadf7dSDmitry Mishin int compat_ipv6_getsockopt(struct sock *sk, int level, int optname, 13813fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 13823fdadf7dSDmitry Mishin { 13833fdadf7dSDmitry Mishin int err; 13843fdadf7dSDmitry Mishin 13853fdadf7dSDmitry Mishin if (level == SOL_IP && sk->sk_type != SOCK_RAW) { 1386543d9cfeSArnaldo Carvalho de Melo if (udp_prot.compat_getsockopt != NULL) 1387543d9cfeSArnaldo Carvalho de Melo return udp_prot.compat_getsockopt(sk, level, optname, 1388543d9cfeSArnaldo Carvalho de Melo optval, optlen); 1389543d9cfeSArnaldo Carvalho de Melo return udp_prot.getsockopt(sk, level, optname, optval, optlen); 13903fdadf7dSDmitry Mishin } 13913fdadf7dSDmitry Mishin 13923fdadf7dSDmitry Mishin if (level != SOL_IPV6) 13933fdadf7dSDmitry Mishin return -ENOPROTOOPT; 13943fdadf7dSDmitry Mishin 139580991790SPavel Emelyanov if (optname == MCAST_MSFILTER) 139680991790SPavel Emelyanov return compat_mc_getsockopt(sk, level, optname, optval, optlen, 139780991790SPavel Emelyanov ipv6_getsockopt); 139880991790SPavel Emelyanov 139998e77438SDaniel Baluta err = do_ipv6_getsockopt(sk, level, optname, optval, optlen, 140098e77438SDaniel Baluta MSG_CMSG_COMPAT); 14013fdadf7dSDmitry Mishin #ifdef CONFIG_NETFILTER 1402cf6fc4a9SWei Yongjun /* we need to exclude all possible ENOPROTOOPTs except default case */ 1403cf6fc4a9SWei Yongjun if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) { 14043fdadf7dSDmitry Mishin int len; 14053fdadf7dSDmitry Mishin 14063fdadf7dSDmitry Mishin if (get_user(len, optlen)) 14073fdadf7dSDmitry Mishin return -EFAULT; 14083fdadf7dSDmitry Mishin 140901ea306fSPaolo Abeni err = compat_nf_getsockopt(sk, PF_INET6, optname, optval, &len); 14103fdadf7dSDmitry Mishin if (err >= 0) 14113fdadf7dSDmitry Mishin err = put_user(len, optlen); 14123fdadf7dSDmitry Mishin } 14133fdadf7dSDmitry Mishin #endif 14143fdadf7dSDmitry Mishin return err; 14153fdadf7dSDmitry Mishin } 1416543d9cfeSArnaldo Carvalho de Melo EXPORT_SYMBOL(compat_ipv6_getsockopt); 14173fdadf7dSDmitry Mishin #endif 14183fdadf7dSDmitry Mishin 1419