11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * RAW sockets for IPv6 31da177e4SLinus Torvalds * Linux INET6 implementation 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: 61da177e4SLinus Torvalds * Pedro Roque <roque@di.fc.ul.pt> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * Adapted from linux/net/ipv4/raw.c 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * $Id: raw.c,v 1.51 2002/02/01 22:01:04 davem Exp $ 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Fixes: 131da177e4SLinus Torvalds * Hideaki YOSHIFUJI : sin6_scope_id support 141da177e4SLinus Torvalds * YOSHIFUJI,H.@USAGI : raw checksum (RFC2292(bis) compliance) 151da177e4SLinus Torvalds * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 181da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 191da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 201da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 211da177e4SLinus Torvalds */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #include <linux/errno.h> 241da177e4SLinus Torvalds #include <linux/types.h> 251da177e4SLinus Torvalds #include <linux/socket.h> 261da177e4SLinus Torvalds #include <linux/sockios.h> 271da177e4SLinus Torvalds #include <linux/net.h> 281da177e4SLinus Torvalds #include <linux/in6.h> 291da177e4SLinus Torvalds #include <linux/netdevice.h> 301da177e4SLinus Torvalds #include <linux/if_arp.h> 311da177e4SLinus Torvalds #include <linux/icmpv6.h> 321da177e4SLinus Torvalds #include <linux/netfilter.h> 331da177e4SLinus Torvalds #include <linux/netfilter_ipv6.h> 343305b80cSHerbert Xu #include <linux/skbuff.h> 351da177e4SLinus Torvalds #include <asm/uaccess.h> 361da177e4SLinus Torvalds #include <asm/ioctls.h> 371da177e4SLinus Torvalds 38457c4cbcSEric W. Biederman #include <net/net_namespace.h> 391da177e4SLinus Torvalds #include <net/ip.h> 401da177e4SLinus Torvalds #include <net/sock.h> 411da177e4SLinus Torvalds #include <net/snmp.h> 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds #include <net/ipv6.h> 441da177e4SLinus Torvalds #include <net/ndisc.h> 451da177e4SLinus Torvalds #include <net/protocol.h> 461da177e4SLinus Torvalds #include <net/ip6_route.h> 471da177e4SLinus Torvalds #include <net/ip6_checksum.h> 481da177e4SLinus Torvalds #include <net/addrconf.h> 491da177e4SLinus Torvalds #include <net/transp_v6.h> 501da177e4SLinus Torvalds #include <net/udp.h> 511da177e4SLinus Torvalds #include <net/inet_common.h> 52c752f073SArnaldo Carvalho de Melo #include <net/tcp_states.h> 5359fbb3a6SMasahide NAKAMURA #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) 547be96f76SMasahide NAKAMURA #include <net/mip6.h> 557be96f76SMasahide NAKAMURA #endif 561da177e4SLinus Torvalds 57b673e4dfSPavel Emelyanov #include <net/raw.h> 581da177e4SLinus Torvalds #include <net/rawv6.h> 591da177e4SLinus Torvalds #include <net/xfrm.h> 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds #include <linux/proc_fs.h> 621da177e4SLinus Torvalds #include <linux/seq_file.h> 631da177e4SLinus Torvalds 64b673e4dfSPavel Emelyanov static struct raw_hashinfo raw_v6_hashinfo = { 65b673e4dfSPavel Emelyanov .lock = __RW_LOCK_UNLOCKED(), 66b673e4dfSPavel Emelyanov }; 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds static void raw_v6_hash(struct sock *sk) 691da177e4SLinus Torvalds { 7065b4c50bSPavel Emelyanov raw_hash_sk(sk, &raw_v6_hashinfo); 711da177e4SLinus Torvalds } 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds static void raw_v6_unhash(struct sock *sk) 741da177e4SLinus Torvalds { 75ab70768eSPavel Emelyanov raw_unhash_sk(sk, &raw_v6_hashinfo); 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds 79be185884SPavel Emelyanov static struct sock *__raw_v6_lookup(struct net *net, struct sock *sk, 80be185884SPavel Emelyanov unsigned short num, struct in6_addr *loc_addr, 81be185884SPavel Emelyanov struct in6_addr *rmt_addr, int dif) 821da177e4SLinus Torvalds { 831da177e4SLinus Torvalds struct hlist_node *node; 841da177e4SLinus Torvalds int is_multicast = ipv6_addr_is_multicast(loc_addr); 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds sk_for_each_from(sk, node) 871da177e4SLinus Torvalds if (inet_sk(sk)->num == num) { 881da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 891da177e4SLinus Torvalds 90be185884SPavel Emelyanov if (sk->sk_net != net) 91be185884SPavel Emelyanov continue; 92be185884SPavel Emelyanov 931da177e4SLinus Torvalds if (!ipv6_addr_any(&np->daddr) && 941da177e4SLinus Torvalds !ipv6_addr_equal(&np->daddr, rmt_addr)) 951da177e4SLinus Torvalds continue; 961da177e4SLinus Torvalds 970bd1b59bSAndrew McDonald if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif) 980bd1b59bSAndrew McDonald continue; 990bd1b59bSAndrew McDonald 1001da177e4SLinus Torvalds if (!ipv6_addr_any(&np->rcv_saddr)) { 1011da177e4SLinus Torvalds if (ipv6_addr_equal(&np->rcv_saddr, loc_addr)) 1021da177e4SLinus Torvalds goto found; 1031da177e4SLinus Torvalds if (is_multicast && 1041da177e4SLinus Torvalds inet6_mc_check(sk, loc_addr, rmt_addr)) 1051da177e4SLinus Torvalds goto found; 1061da177e4SLinus Torvalds continue; 1071da177e4SLinus Torvalds } 1081da177e4SLinus Torvalds goto found; 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds sk = NULL; 1111da177e4SLinus Torvalds found: 1121da177e4SLinus Torvalds return sk; 1131da177e4SLinus Torvalds } 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds /* 1161da177e4SLinus Torvalds * 0 - deliver 1171da177e4SLinus Torvalds * 1 - block 1181da177e4SLinus Torvalds */ 1191da177e4SLinus Torvalds static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb) 1201da177e4SLinus Torvalds { 1211da177e4SLinus Torvalds struct icmp6hdr *icmph; 1221da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) { 1251da177e4SLinus Torvalds __u32 *data = &rp->filter.data[0]; 1261da177e4SLinus Torvalds int bit_nr; 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds icmph = (struct icmp6hdr *) skb->data; 1291da177e4SLinus Torvalds bit_nr = icmph->icmp6_type; 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0; 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds return 0; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 13659fbb3a6SMasahide NAKAMURA #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) 13759fbb3a6SMasahide NAKAMURA static int (*mh_filter)(struct sock *sock, struct sk_buff *skb); 13859fbb3a6SMasahide NAKAMURA 13959fbb3a6SMasahide NAKAMURA int rawv6_mh_filter_register(int (*filter)(struct sock *sock, 14059fbb3a6SMasahide NAKAMURA struct sk_buff *skb)) 14159fbb3a6SMasahide NAKAMURA { 14259fbb3a6SMasahide NAKAMURA rcu_assign_pointer(mh_filter, filter); 14359fbb3a6SMasahide NAKAMURA return 0; 14459fbb3a6SMasahide NAKAMURA } 14559fbb3a6SMasahide NAKAMURA EXPORT_SYMBOL(rawv6_mh_filter_register); 14659fbb3a6SMasahide NAKAMURA 14759fbb3a6SMasahide NAKAMURA int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock, 14859fbb3a6SMasahide NAKAMURA struct sk_buff *skb)) 14959fbb3a6SMasahide NAKAMURA { 15059fbb3a6SMasahide NAKAMURA rcu_assign_pointer(mh_filter, NULL); 15159fbb3a6SMasahide NAKAMURA synchronize_rcu(); 15259fbb3a6SMasahide NAKAMURA return 0; 15359fbb3a6SMasahide NAKAMURA } 15459fbb3a6SMasahide NAKAMURA EXPORT_SYMBOL(rawv6_mh_filter_unregister); 15559fbb3a6SMasahide NAKAMURA 15659fbb3a6SMasahide NAKAMURA #endif 15759fbb3a6SMasahide NAKAMURA 1581da177e4SLinus Torvalds /* 1591da177e4SLinus Torvalds * demultiplex raw sockets. 1601da177e4SLinus Torvalds * (should consider queueing the skb in the sock receive_queue 1611da177e4SLinus Torvalds * without calling rawv6.c) 1621da177e4SLinus Torvalds * 1631da177e4SLinus Torvalds * Caller owns SKB so we must make clones. 1641da177e4SLinus Torvalds */ 16569d6da0bSPavel Emelyanov static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) 1661da177e4SLinus Torvalds { 1671da177e4SLinus Torvalds struct in6_addr *saddr; 1681da177e4SLinus Torvalds struct in6_addr *daddr; 1691da177e4SLinus Torvalds struct sock *sk; 170d13964f4SPatrick McHardy int delivered = 0; 1711da177e4SLinus Torvalds __u8 hash; 172be185884SPavel Emelyanov struct net *net; 1731da177e4SLinus Torvalds 1740660e03fSArnaldo Carvalho de Melo saddr = &ipv6_hdr(skb)->saddr; 1751da177e4SLinus Torvalds daddr = saddr + 1; 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds hash = nexthdr & (MAX_INET_PROTOS - 1); 1781da177e4SLinus Torvalds 179b673e4dfSPavel Emelyanov read_lock(&raw_v6_hashinfo.lock); 180b673e4dfSPavel Emelyanov sk = sk_head(&raw_v6_hashinfo.ht[hash]); 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds /* 1831da177e4SLinus Torvalds * The first socket found will be delivered after 1841da177e4SLinus Torvalds * delivery to transport protocols. 1851da177e4SLinus Torvalds */ 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds if (sk == NULL) 1881da177e4SLinus Torvalds goto out; 1891da177e4SLinus Torvalds 190be185884SPavel Emelyanov net = skb->dev->nd_net; 191be185884SPavel Emelyanov sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds while (sk) { 1947be96f76SMasahide NAKAMURA int filtered; 1957be96f76SMasahide NAKAMURA 196d13964f4SPatrick McHardy delivered = 1; 1977be96f76SMasahide NAKAMURA switch (nexthdr) { 1987be96f76SMasahide NAKAMURA case IPPROTO_ICMPV6: 1997be96f76SMasahide NAKAMURA filtered = icmpv6_filter(sk, skb); 2007be96f76SMasahide NAKAMURA break; 20159fbb3a6SMasahide NAKAMURA 20259fbb3a6SMasahide NAKAMURA #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) 2037be96f76SMasahide NAKAMURA case IPPROTO_MH: 20459fbb3a6SMasahide NAKAMURA { 2057be96f76SMasahide NAKAMURA /* XXX: To validate MH only once for each packet, 2067be96f76SMasahide NAKAMURA * this is placed here. It should be after checking 2077be96f76SMasahide NAKAMURA * xfrm policy, however it doesn't. The checking xfrm 2087be96f76SMasahide NAKAMURA * policy is placed in rawv6_rcv() because it is 2097be96f76SMasahide NAKAMURA * required for each socket. 2107be96f76SMasahide NAKAMURA */ 21159fbb3a6SMasahide NAKAMURA int (*filter)(struct sock *sock, struct sk_buff *skb); 21259fbb3a6SMasahide NAKAMURA 21359fbb3a6SMasahide NAKAMURA filter = rcu_dereference(mh_filter); 21459fbb3a6SMasahide NAKAMURA filtered = filter ? filter(sk, skb) : 0; 2157be96f76SMasahide NAKAMURA break; 21659fbb3a6SMasahide NAKAMURA } 2177be96f76SMasahide NAKAMURA #endif 2187be96f76SMasahide NAKAMURA default: 2197be96f76SMasahide NAKAMURA filtered = 0; 2207be96f76SMasahide NAKAMURA break; 2217be96f76SMasahide NAKAMURA } 2227be96f76SMasahide NAKAMURA 2237be96f76SMasahide NAKAMURA if (filtered < 0) 2247be96f76SMasahide NAKAMURA break; 2257be96f76SMasahide NAKAMURA if (filtered == 0) { 2261da177e4SLinus Torvalds struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds /* Not releasing hash table! */ 2299fb9cbb1SYasuyuki Kozakai if (clone) { 2309fb9cbb1SYasuyuki Kozakai nf_reset(clone); 2311da177e4SLinus Torvalds rawv6_rcv(sk, clone); 2321da177e4SLinus Torvalds } 2339fb9cbb1SYasuyuki Kozakai } 234be185884SPavel Emelyanov sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr, 2352dac4b96SYOSHIFUJI Hideaki IP6CB(skb)->iif); 2361da177e4SLinus Torvalds } 2371da177e4SLinus Torvalds out: 238b673e4dfSPavel Emelyanov read_unlock(&raw_v6_hashinfo.lock); 239d13964f4SPatrick McHardy return delivered; 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds 24269d6da0bSPavel Emelyanov int raw6_local_deliver(struct sk_buff *skb, int nexthdr) 24369d6da0bSPavel Emelyanov { 24469d6da0bSPavel Emelyanov struct sock *raw_sk; 24569d6da0bSPavel Emelyanov 246b673e4dfSPavel Emelyanov raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]); 24769d6da0bSPavel Emelyanov if (raw_sk && !ipv6_raw_deliver(skb, nexthdr)) 24869d6da0bSPavel Emelyanov raw_sk = NULL; 24969d6da0bSPavel Emelyanov 25069d6da0bSPavel Emelyanov return raw_sk != NULL; 25169d6da0bSPavel Emelyanov } 25269d6da0bSPavel Emelyanov 2531da177e4SLinus Torvalds /* This cleans up af_inet6 a bit. -DaveM */ 2541da177e4SLinus Torvalds static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) 2551da177e4SLinus Torvalds { 2561da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 2571da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 2581da177e4SLinus Torvalds struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr; 259e69a4adcSAl Viro __be32 v4addr = 0; 2601da177e4SLinus Torvalds int addr_type; 2611da177e4SLinus Torvalds int err; 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 2641da177e4SLinus Torvalds return -EINVAL; 2651da177e4SLinus Torvalds addr_type = ipv6_addr_type(&addr->sin6_addr); 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds /* Raw sockets are IPv6 only */ 2681da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) 2691da177e4SLinus Torvalds return(-EADDRNOTAVAIL); 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds lock_sock(sk); 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds err = -EINVAL; 2741da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE) 2751da177e4SLinus Torvalds goto out; 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds /* Check if the address belongs to the host. */ 2781da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 2791da177e4SLinus Torvalds struct net_device *dev = NULL; 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 2821da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2831da177e4SLinus Torvalds addr->sin6_scope_id) { 2841da177e4SLinus Torvalds /* Override any existing binding, if another 2851da177e4SLinus Torvalds * one is supplied by user. 2861da177e4SLinus Torvalds */ 2871da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 2881da177e4SLinus Torvalds } 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 2911da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) 2921da177e4SLinus Torvalds goto out; 2931da177e4SLinus Torvalds 294e5ba31f1SPavel Emelyanov dev = dev_get_by_index(sk->sk_net, sk->sk_bound_dev_if); 2951da177e4SLinus Torvalds if (!dev) { 2961da177e4SLinus Torvalds err = -ENODEV; 2971da177e4SLinus Torvalds goto out; 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds } 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 3021da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 3031da177e4SLinus Torvalds */ 3041da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 3051da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 3061da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 307e5ba31f1SPavel Emelyanov if (!ipv6_chk_addr(sk->sk_net, &addr->sin6_addr, 308bfeade08SDaniel Lezcano dev, 0)) { 3091da177e4SLinus Torvalds if (dev) 3101da177e4SLinus Torvalds dev_put(dev); 3111da177e4SLinus Torvalds goto out; 3121da177e4SLinus Torvalds } 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds if (dev) 3151da177e4SLinus Torvalds dev_put(dev); 3161da177e4SLinus Torvalds } 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds inet->rcv_saddr = inet->saddr = v4addr; 3191da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3201da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3211da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3221da177e4SLinus Torvalds err = 0; 3231da177e4SLinus Torvalds out: 3241da177e4SLinus Torvalds release_sock(sk); 3251da177e4SLinus Torvalds return err; 3261da177e4SLinus Torvalds } 3271da177e4SLinus Torvalds 32869d6da0bSPavel Emelyanov static void rawv6_err(struct sock *sk, struct sk_buff *skb, 3291da177e4SLinus Torvalds struct inet6_skb_parm *opt, 33004ce6909SAl Viro int type, int code, int offset, __be32 info) 3311da177e4SLinus Torvalds { 3321da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 3331da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3341da177e4SLinus Torvalds int err; 3351da177e4SLinus Torvalds int harderr; 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds /* Report error on raw socket, if: 3381da177e4SLinus Torvalds 1. User requested recverr. 3391da177e4SLinus Torvalds 2. Socket is connected (otherwise the error indication 3401da177e4SLinus Torvalds is useless without recverr and error is hard. 3411da177e4SLinus Torvalds */ 3421da177e4SLinus Torvalds if (!np->recverr && sk->sk_state != TCP_ESTABLISHED) 3431da177e4SLinus Torvalds return; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds harderr = icmpv6_err_convert(type, code, &err); 3461da177e4SLinus Torvalds if (type == ICMPV6_PKT_TOOBIG) 3471da177e4SLinus Torvalds harderr = (np->pmtudisc == IPV6_PMTUDISC_DO); 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds if (np->recverr) { 3501da177e4SLinus Torvalds u8 *payload = skb->data; 3511da177e4SLinus Torvalds if (!inet->hdrincl) 3521da177e4SLinus Torvalds payload += offset; 3531da177e4SLinus Torvalds ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload); 3541da177e4SLinus Torvalds } 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds if (np->recverr || harderr) { 3571da177e4SLinus Torvalds sk->sk_err = err; 3581da177e4SLinus Torvalds sk->sk_error_report(sk); 3591da177e4SLinus Torvalds } 3601da177e4SLinus Torvalds } 3611da177e4SLinus Torvalds 36269d6da0bSPavel Emelyanov void raw6_icmp_error(struct sk_buff *skb, int nexthdr, 36369d6da0bSPavel Emelyanov int type, int code, int inner_offset, __be32 info) 36469d6da0bSPavel Emelyanov { 36569d6da0bSPavel Emelyanov struct sock *sk; 36669d6da0bSPavel Emelyanov int hash; 36769d6da0bSPavel Emelyanov struct in6_addr *saddr, *daddr; 368be185884SPavel Emelyanov struct net *net; 36969d6da0bSPavel Emelyanov 370b673e4dfSPavel Emelyanov hash = nexthdr & (RAW_HTABLE_SIZE - 1); 37169d6da0bSPavel Emelyanov 372b673e4dfSPavel Emelyanov read_lock(&raw_v6_hashinfo.lock); 373b673e4dfSPavel Emelyanov sk = sk_head(&raw_v6_hashinfo.ht[hash]); 37469d6da0bSPavel Emelyanov if (sk != NULL) { 37569d6da0bSPavel Emelyanov saddr = &ipv6_hdr(skb)->saddr; 37669d6da0bSPavel Emelyanov daddr = &ipv6_hdr(skb)->daddr; 377be185884SPavel Emelyanov net = skb->dev->nd_net; 37869d6da0bSPavel Emelyanov 379be185884SPavel Emelyanov while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr, 38069d6da0bSPavel Emelyanov IP6CB(skb)->iif))) { 38169d6da0bSPavel Emelyanov rawv6_err(sk, skb, NULL, type, code, 38269d6da0bSPavel Emelyanov inner_offset, info); 38369d6da0bSPavel Emelyanov sk = sk_next(sk); 38469d6da0bSPavel Emelyanov } 38569d6da0bSPavel Emelyanov } 386b673e4dfSPavel Emelyanov read_unlock(&raw_v6_hashinfo.lock); 38769d6da0bSPavel Emelyanov } 38869d6da0bSPavel Emelyanov 3891da177e4SLinus Torvalds static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb) 3901da177e4SLinus Torvalds { 3911da177e4SLinus Torvalds if ((raw6_sk(sk)->checksum || sk->sk_filter) && 392fb286bb2SHerbert Xu skb_checksum_complete(skb)) { 393a92aa318SWang Chen atomic_inc(&sk->sk_drops); 3941da177e4SLinus Torvalds kfree_skb(skb); 3951da177e4SLinus Torvalds return 0; 3961da177e4SLinus Torvalds } 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds /* Charge it to the socket. */ 3991da177e4SLinus Torvalds if (sock_queue_rcv_skb(sk,skb)<0) { 400a92aa318SWang Chen atomic_inc(&sk->sk_drops); 4011da177e4SLinus Torvalds kfree_skb(skb); 4021da177e4SLinus Torvalds return 0; 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds return 0; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds /* 4091da177e4SLinus Torvalds * This is next to useless... 4101da177e4SLinus Torvalds * if we demultiplex in network layer we don't need the extra call 4111da177e4SLinus Torvalds * just to queue the skb... 4121da177e4SLinus Torvalds * maybe we could have the network decide upon a hint if it 4131da177e4SLinus Torvalds * should call raw_rcv for demultiplexing 4141da177e4SLinus Torvalds */ 4151da177e4SLinus Torvalds int rawv6_rcv(struct sock *sk, struct sk_buff *skb) 4161da177e4SLinus Torvalds { 4171da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 4181da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) { 421a92aa318SWang Chen atomic_inc(&sk->sk_drops); 4221da177e4SLinus Torvalds kfree_skb(skb); 4231da177e4SLinus Torvalds return NET_RX_DROP; 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds if (!rp->checksum) 4271da177e4SLinus Torvalds skb->ip_summed = CHECKSUM_UNNECESSARY; 4281da177e4SLinus Torvalds 42984fa7933SPatrick McHardy if (skb->ip_summed == CHECKSUM_COMPLETE) { 430d56f90a7SArnaldo Carvalho de Melo skb_postpull_rcsum(skb, skb_network_header(skb), 431cfe1fc77SArnaldo Carvalho de Melo skb_network_header_len(skb)); 4320660e03fSArnaldo Carvalho de Melo if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 4330660e03fSArnaldo Carvalho de Melo &ipv6_hdr(skb)->daddr, 434fb286bb2SHerbert Xu skb->len, inet->num, skb->csum)) 435fb286bb2SHerbert Xu skb->ip_summed = CHECKSUM_UNNECESSARY; 4361da177e4SLinus Torvalds } 43760476372SHerbert Xu if (!skb_csum_unnecessary(skb)) 4380660e03fSArnaldo Carvalho de Melo skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 4390660e03fSArnaldo Carvalho de Melo &ipv6_hdr(skb)->daddr, 4400660e03fSArnaldo Carvalho de Melo skb->len, 4410660e03fSArnaldo Carvalho de Melo inet->num, 0)); 4421da177e4SLinus Torvalds 4431da177e4SLinus Torvalds if (inet->hdrincl) { 444fb286bb2SHerbert Xu if (skb_checksum_complete(skb)) { 445a92aa318SWang Chen atomic_inc(&sk->sk_drops); 4461da177e4SLinus Torvalds kfree_skb(skb); 4471da177e4SLinus Torvalds return 0; 4481da177e4SLinus Torvalds } 4491da177e4SLinus Torvalds } 4501da177e4SLinus Torvalds 4511da177e4SLinus Torvalds rawv6_rcv_skb(sk, skb); 4521da177e4SLinus Torvalds return 0; 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds /* 4571da177e4SLinus Torvalds * This should be easy, if there is something there 4581da177e4SLinus Torvalds * we return it, otherwise we block. 4591da177e4SLinus Torvalds */ 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk, 4621da177e4SLinus Torvalds struct msghdr *msg, size_t len, 4631da177e4SLinus Torvalds int noblock, int flags, int *addr_len) 4641da177e4SLinus Torvalds { 4651da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4661da177e4SLinus Torvalds struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name; 4671da177e4SLinus Torvalds struct sk_buff *skb; 4681da177e4SLinus Torvalds size_t copied; 4691da177e4SLinus Torvalds int err; 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds if (flags & MSG_OOB) 4721da177e4SLinus Torvalds return -EOPNOTSUPP; 4731da177e4SLinus Torvalds 4741da177e4SLinus Torvalds if (addr_len) 4751da177e4SLinus Torvalds *addr_len=sizeof(*sin6); 4761da177e4SLinus Torvalds 4771da177e4SLinus Torvalds if (flags & MSG_ERRQUEUE) 4781da177e4SLinus Torvalds return ipv6_recv_error(sk, msg, len); 4791da177e4SLinus Torvalds 4801da177e4SLinus Torvalds skb = skb_recv_datagram(sk, flags, noblock, &err); 4811da177e4SLinus Torvalds if (!skb) 4821da177e4SLinus Torvalds goto out; 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvalds copied = skb->len; 4851da177e4SLinus Torvalds if (copied > len) { 4861da177e4SLinus Torvalds copied = len; 4871da177e4SLinus Torvalds msg->msg_flags |= MSG_TRUNC; 4881da177e4SLinus Torvalds } 4891da177e4SLinus Torvalds 49060476372SHerbert Xu if (skb_csum_unnecessary(skb)) { 4911da177e4SLinus Torvalds err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); 4921da177e4SLinus Torvalds } else if (msg->msg_flags&MSG_TRUNC) { 493fb286bb2SHerbert Xu if (__skb_checksum_complete(skb)) 4941da177e4SLinus Torvalds goto csum_copy_err; 4951da177e4SLinus Torvalds err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); 4961da177e4SLinus Torvalds } else { 4971da177e4SLinus Torvalds err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov); 4981da177e4SLinus Torvalds if (err == -EINVAL) 4991da177e4SLinus Torvalds goto csum_copy_err; 5001da177e4SLinus Torvalds } 5011da177e4SLinus Torvalds if (err) 5021da177e4SLinus Torvalds goto out_free; 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds /* Copy the address. */ 5051da177e4SLinus Torvalds if (sin6) { 5061da177e4SLinus Torvalds sin6->sin6_family = AF_INET6; 507f59fc7f3STetsuo Handa sin6->sin6_port = 0; 5080660e03fSArnaldo Carvalho de Melo ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr); 5091da177e4SLinus Torvalds sin6->sin6_flowinfo = 0; 5101da177e4SLinus Torvalds sin6->sin6_scope_id = 0; 5111da177e4SLinus Torvalds if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) 5121da177e4SLinus Torvalds sin6->sin6_scope_id = IP6CB(skb)->iif; 5131da177e4SLinus Torvalds } 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds sock_recv_timestamp(msg, sk, skb); 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds if (np->rxopt.all) 5181da177e4SLinus Torvalds datagram_recv_ctl(sk, msg, skb); 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds err = copied; 5211da177e4SLinus Torvalds if (flags & MSG_TRUNC) 5221da177e4SLinus Torvalds err = skb->len; 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds out_free: 5251da177e4SLinus Torvalds skb_free_datagram(sk, skb); 5261da177e4SLinus Torvalds out: 5271da177e4SLinus Torvalds return err; 5281da177e4SLinus Torvalds 5291da177e4SLinus Torvalds csum_copy_err: 5303305b80cSHerbert Xu skb_kill_datagram(sk, skb, flags); 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds /* Error for blocking case is chosen to masquerade 5331da177e4SLinus Torvalds as some normal condition. 5341da177e4SLinus Torvalds */ 5351da177e4SLinus Torvalds err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH; 536a92aa318SWang Chen atomic_inc(&sk->sk_drops); 5373305b80cSHerbert Xu goto out; 5381da177e4SLinus Torvalds } 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl, 541357b40a1SHerbert Xu struct raw6_sock *rp) 5421da177e4SLinus Torvalds { 5431da177e4SLinus Torvalds struct sk_buff *skb; 5441da177e4SLinus Torvalds int err = 0; 545357b40a1SHerbert Xu int offset; 546357b40a1SHerbert Xu int len; 547679a8738SHerbert Xu int total_len; 548868c86bcSAl Viro __wsum tmp_csum; 549868c86bcSAl Viro __sum16 csum; 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds if (!rp->checksum) 5521da177e4SLinus Torvalds goto send; 5531da177e4SLinus Torvalds 5541da177e4SLinus Torvalds if ((skb = skb_peek(&sk->sk_write_queue)) == NULL) 5551da177e4SLinus Torvalds goto out; 5561da177e4SLinus Torvalds 557357b40a1SHerbert Xu offset = rp->offset; 558d56f90a7SArnaldo Carvalho de Melo total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) - 559d56f90a7SArnaldo Carvalho de Melo skb->data); 560679a8738SHerbert Xu if (offset >= total_len - 1) { 5611da177e4SLinus Torvalds err = -EINVAL; 562357b40a1SHerbert Xu ip6_flush_pending_frames(sk); 5631da177e4SLinus Torvalds goto out; 5641da177e4SLinus Torvalds } 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* should be check HW csum miyazawa */ 5671da177e4SLinus Torvalds if (skb_queue_len(&sk->sk_write_queue) == 1) { 5681da177e4SLinus Torvalds /* 5691da177e4SLinus Torvalds * Only one fragment on the socket. 5701da177e4SLinus Torvalds */ 5711da177e4SLinus Torvalds tmp_csum = skb->csum; 5721da177e4SLinus Torvalds } else { 573357b40a1SHerbert Xu struct sk_buff *csum_skb = NULL; 5741da177e4SLinus Torvalds tmp_csum = 0; 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds skb_queue_walk(&sk->sk_write_queue, skb) { 5771da177e4SLinus Torvalds tmp_csum = csum_add(tmp_csum, skb->csum); 578357b40a1SHerbert Xu 579357b40a1SHerbert Xu if (csum_skb) 580357b40a1SHerbert Xu continue; 581357b40a1SHerbert Xu 582ea2ae17dSArnaldo Carvalho de Melo len = skb->len - skb_transport_offset(skb); 583357b40a1SHerbert Xu if (offset >= len) { 584357b40a1SHerbert Xu offset -= len; 585357b40a1SHerbert Xu continue; 5861da177e4SLinus Torvalds } 587357b40a1SHerbert Xu 588357b40a1SHerbert Xu csum_skb = skb; 5891da177e4SLinus Torvalds } 5901da177e4SLinus Torvalds 591357b40a1SHerbert Xu skb = csum_skb; 592357b40a1SHerbert Xu } 593357b40a1SHerbert Xu 594ea2ae17dSArnaldo Carvalho de Melo offset += skb_transport_offset(skb); 595357b40a1SHerbert Xu if (skb_copy_bits(skb, offset, &csum, 2)) 596357b40a1SHerbert Xu BUG(); 597357b40a1SHerbert Xu 5981da177e4SLinus Torvalds /* in case cksum was not initialized */ 599357b40a1SHerbert Xu if (unlikely(csum)) 6005f92a738SAl Viro tmp_csum = csum_sub(tmp_csum, csum_unfold(csum)); 6011da177e4SLinus Torvalds 602868c86bcSAl Viro csum = csum_ipv6_magic(&fl->fl6_src, 6031da177e4SLinus Torvalds &fl->fl6_dst, 604679a8738SHerbert Xu total_len, fl->proto, tmp_csum); 6051da177e4SLinus Torvalds 606f6ab0288SAl Viro if (csum == 0 && fl->proto == IPPROTO_UDP) 607f6ab0288SAl Viro csum = CSUM_MANGLED_0; 608357b40a1SHerbert Xu 609357b40a1SHerbert Xu if (skb_store_bits(skb, offset, &csum, 2)) 610357b40a1SHerbert Xu BUG(); 611357b40a1SHerbert Xu 6121da177e4SLinus Torvalds send: 6131da177e4SLinus Torvalds err = ip6_push_pending_frames(sk); 6141da177e4SLinus Torvalds out: 6151da177e4SLinus Torvalds return err; 6161da177e4SLinus Torvalds } 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds static int rawv6_send_hdrinc(struct sock *sk, void *from, int length, 6191da177e4SLinus Torvalds struct flowi *fl, struct rt6_info *rt, 6201da177e4SLinus Torvalds unsigned int flags) 6211da177e4SLinus Torvalds { 6223320da89SHerbert Xu struct ipv6_pinfo *np = inet6_sk(sk); 6231da177e4SLinus Torvalds struct ipv6hdr *iph; 6241da177e4SLinus Torvalds struct sk_buff *skb; 6251da177e4SLinus Torvalds unsigned int hh_len; 6261da177e4SLinus Torvalds int err; 6271da177e4SLinus Torvalds 6281da177e4SLinus Torvalds if (length > rt->u.dst.dev->mtu) { 6291da177e4SLinus Torvalds ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu); 6301da177e4SLinus Torvalds return -EMSGSIZE; 6311da177e4SLinus Torvalds } 6321da177e4SLinus Torvalds if (flags&MSG_PROBE) 6331da177e4SLinus Torvalds goto out; 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds hh_len = LL_RESERVED_SPACE(rt->u.dst.dev); 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds skb = sock_alloc_send_skb(sk, length+hh_len+15, 6381da177e4SLinus Torvalds flags&MSG_DONTWAIT, &err); 6391da177e4SLinus Torvalds if (skb == NULL) 6401da177e4SLinus Torvalds goto error; 6411da177e4SLinus Torvalds skb_reserve(skb, hh_len); 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds skb->priority = sk->sk_priority; 6444a19ec58SLaszlo Attila Toth skb->mark = sk->sk_mark; 6451da177e4SLinus Torvalds skb->dst = dst_clone(&rt->u.dst); 6461da177e4SLinus Torvalds 6471ced98e8SArnaldo Carvalho de Melo skb_put(skb, length); 6481ced98e8SArnaldo Carvalho de Melo skb_reset_network_header(skb); 6490660e03fSArnaldo Carvalho de Melo iph = ipv6_hdr(skb); 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds skb->ip_summed = CHECKSUM_NONE; 6521da177e4SLinus Torvalds 653b0e380b1SArnaldo Carvalho de Melo skb->transport_header = skb->network_header; 6541da177e4SLinus Torvalds err = memcpy_fromiovecend((void *)iph, from, 0, length); 6551da177e4SLinus Torvalds if (err) 6561da177e4SLinus Torvalds goto error_fault; 6571da177e4SLinus Torvalds 658a11d206dSYOSHIFUJI Hideaki IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS); 6596e23ae2aSPatrick McHardy err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev, 6601da177e4SLinus Torvalds dst_output); 6611da177e4SLinus Torvalds if (err > 0) 6623320da89SHerbert Xu err = np->recverr ? net_xmit_errno(err) : 0; 6631da177e4SLinus Torvalds if (err) 6641da177e4SLinus Torvalds goto error; 6651da177e4SLinus Torvalds out: 6661da177e4SLinus Torvalds return 0; 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds error_fault: 6691da177e4SLinus Torvalds err = -EFAULT; 6701da177e4SLinus Torvalds kfree_skb(skb); 6711da177e4SLinus Torvalds error: 672a11d206dSYOSHIFUJI Hideaki IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS); 6731da177e4SLinus Torvalds return err; 6741da177e4SLinus Torvalds } 6751da177e4SLinus Torvalds 676a27b58feSHeiko Carstens static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) 6771da177e4SLinus Torvalds { 6781da177e4SLinus Torvalds struct iovec *iov; 6791da177e4SLinus Torvalds u8 __user *type = NULL; 6801da177e4SLinus Torvalds u8 __user *code = NULL; 6816e8f4d48SMasahide NAKAMURA u8 len = 0; 6821da177e4SLinus Torvalds int probed = 0; 6831da177e4SLinus Torvalds int i; 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds if (!msg->msg_iov) 686a27b58feSHeiko Carstens return 0; 6871da177e4SLinus Torvalds 6881da177e4SLinus Torvalds for (i = 0; i < msg->msg_iovlen; i++) { 6891da177e4SLinus Torvalds iov = &msg->msg_iov[i]; 6901da177e4SLinus Torvalds if (!iov) 6911da177e4SLinus Torvalds continue; 6921da177e4SLinus Torvalds 6931da177e4SLinus Torvalds switch (fl->proto) { 6941da177e4SLinus Torvalds case IPPROTO_ICMPV6: 6951da177e4SLinus Torvalds /* check if one-byte field is readable or not. */ 6961da177e4SLinus Torvalds if (iov->iov_base && iov->iov_len < 1) 6971da177e4SLinus Torvalds break; 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds if (!type) { 7001da177e4SLinus Torvalds type = iov->iov_base; 7011da177e4SLinus Torvalds /* check if code field is readable or not. */ 7021da177e4SLinus Torvalds if (iov->iov_len > 1) 7031da177e4SLinus Torvalds code = type + 1; 7041da177e4SLinus Torvalds } else if (!code) 7051da177e4SLinus Torvalds code = iov->iov_base; 7061da177e4SLinus Torvalds 7071da177e4SLinus Torvalds if (type && code) { 708a27b58feSHeiko Carstens if (get_user(fl->fl_icmp_type, type) || 709a27b58feSHeiko Carstens get_user(fl->fl_icmp_code, code)) 710a27b58feSHeiko Carstens return -EFAULT; 7111da177e4SLinus Torvalds probed = 1; 7121da177e4SLinus Torvalds } 7131da177e4SLinus Torvalds break; 7146e8f4d48SMasahide NAKAMURA case IPPROTO_MH: 7156e8f4d48SMasahide NAKAMURA if (iov->iov_base && iov->iov_len < 1) 7166e8f4d48SMasahide NAKAMURA break; 7176e8f4d48SMasahide NAKAMURA /* check if type field is readable or not. */ 7186e8f4d48SMasahide NAKAMURA if (iov->iov_len > 2 - len) { 7196e8f4d48SMasahide NAKAMURA u8 __user *p = iov->iov_base; 720a27b58feSHeiko Carstens if (get_user(fl->fl_mh_type, &p[2 - len])) 721a27b58feSHeiko Carstens return -EFAULT; 7226e8f4d48SMasahide NAKAMURA probed = 1; 7236e8f4d48SMasahide NAKAMURA } else 7246e8f4d48SMasahide NAKAMURA len += iov->iov_len; 7256e8f4d48SMasahide NAKAMURA 7266e8f4d48SMasahide NAKAMURA break; 7271da177e4SLinus Torvalds default: 7281da177e4SLinus Torvalds probed = 1; 7291da177e4SLinus Torvalds break; 7301da177e4SLinus Torvalds } 7311da177e4SLinus Torvalds if (probed) 7321da177e4SLinus Torvalds break; 7331da177e4SLinus Torvalds } 734a27b58feSHeiko Carstens return 0; 7351da177e4SLinus Torvalds } 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, 7381da177e4SLinus Torvalds struct msghdr *msg, size_t len) 7391da177e4SLinus Torvalds { 7401da177e4SLinus Torvalds struct ipv6_txoptions opt_space; 7411da177e4SLinus Torvalds struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name; 7421da177e4SLinus Torvalds struct in6_addr *daddr, *final_p = NULL, final; 7431da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 7441da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 7451da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 7461da177e4SLinus Torvalds struct ipv6_txoptions *opt = NULL; 7471da177e4SLinus Torvalds struct ip6_flowlabel *flowlabel = NULL; 7481da177e4SLinus Torvalds struct dst_entry *dst = NULL; 7491da177e4SLinus Torvalds struct flowi fl; 7501da177e4SLinus Torvalds int addr_len = msg->msg_namelen; 7511da177e4SLinus Torvalds int hlimit = -1; 75241a1f8eaSYOSHIFUJI Hideaki int tclass = -1; 7531da177e4SLinus Torvalds u16 proto; 7541da177e4SLinus Torvalds int err; 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds /* Rough check on arithmetic overflow, 757b59e139bSYOSHIFUJI Hideaki better check is made in ip6_append_data(). 7581da177e4SLinus Torvalds */ 759b59e139bSYOSHIFUJI Hideaki if (len > INT_MAX) 7601da177e4SLinus Torvalds return -EMSGSIZE; 7611da177e4SLinus Torvalds 7621da177e4SLinus Torvalds /* Mirror BSD error message compatibility */ 7631da177e4SLinus Torvalds if (msg->msg_flags & MSG_OOB) 7641da177e4SLinus Torvalds return -EOPNOTSUPP; 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds /* 7671da177e4SLinus Torvalds * Get and verify the address. 7681da177e4SLinus Torvalds */ 7691da177e4SLinus Torvalds memset(&fl, 0, sizeof(fl)); 7701da177e4SLinus Torvalds 7714a19ec58SLaszlo Attila Toth fl.mark = sk->sk_mark; 7724a19ec58SLaszlo Attila Toth 7731da177e4SLinus Torvalds if (sin6) { 7741da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 7751da177e4SLinus Torvalds return -EINVAL; 7761da177e4SLinus Torvalds 7771da177e4SLinus Torvalds if (sin6->sin6_family && sin6->sin6_family != AF_INET6) 7781da177e4SLinus Torvalds return(-EAFNOSUPPORT); 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds /* port is the proto value [0..255] carried in nexthdr */ 7811da177e4SLinus Torvalds proto = ntohs(sin6->sin6_port); 7821da177e4SLinus Torvalds 7831da177e4SLinus Torvalds if (!proto) 7841da177e4SLinus Torvalds proto = inet->num; 7851da177e4SLinus Torvalds else if (proto != inet->num) 7861da177e4SLinus Torvalds return(-EINVAL); 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds if (proto > 255) 7891da177e4SLinus Torvalds return(-EINVAL); 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds daddr = &sin6->sin6_addr; 7921da177e4SLinus Torvalds if (np->sndflow) { 7931da177e4SLinus Torvalds fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK; 7941da177e4SLinus Torvalds if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) { 7951da177e4SLinus Torvalds flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); 7961da177e4SLinus Torvalds if (flowlabel == NULL) 7971da177e4SLinus Torvalds return -EINVAL; 7981da177e4SLinus Torvalds daddr = &flowlabel->dst; 7991da177e4SLinus Torvalds } 8001da177e4SLinus Torvalds } 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds /* 8031da177e4SLinus Torvalds * Otherwise it will be difficult to maintain 8041da177e4SLinus Torvalds * sk->sk_dst_cache. 8051da177e4SLinus Torvalds */ 8061da177e4SLinus Torvalds if (sk->sk_state == TCP_ESTABLISHED && 8071da177e4SLinus Torvalds ipv6_addr_equal(daddr, &np->daddr)) 8081da177e4SLinus Torvalds daddr = &np->daddr; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 8111da177e4SLinus Torvalds sin6->sin6_scope_id && 8121da177e4SLinus Torvalds ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL) 8131da177e4SLinus Torvalds fl.oif = sin6->sin6_scope_id; 8141da177e4SLinus Torvalds } else { 8151da177e4SLinus Torvalds if (sk->sk_state != TCP_ESTABLISHED) 8161da177e4SLinus Torvalds return -EDESTADDRREQ; 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds proto = inet->num; 8191da177e4SLinus Torvalds daddr = &np->daddr; 8201da177e4SLinus Torvalds fl.fl6_flowlabel = np->flow_label; 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds if (ipv6_addr_any(daddr)) { 8241da177e4SLinus Torvalds /* 8251da177e4SLinus Torvalds * unspecified destination address 8261da177e4SLinus Torvalds * treated as error... is this correct ? 8271da177e4SLinus Torvalds */ 8281da177e4SLinus Torvalds fl6_sock_release(flowlabel); 8291da177e4SLinus Torvalds return(-EINVAL); 8301da177e4SLinus Torvalds } 8311da177e4SLinus Torvalds 8321da177e4SLinus Torvalds if (fl.oif == 0) 8331da177e4SLinus Torvalds fl.oif = sk->sk_bound_dev_if; 8341da177e4SLinus Torvalds 8351da177e4SLinus Torvalds if (msg->msg_controllen) { 8361da177e4SLinus Torvalds opt = &opt_space; 8371da177e4SLinus Torvalds memset(opt, 0, sizeof(struct ipv6_txoptions)); 8381da177e4SLinus Torvalds opt->tot_len = sizeof(struct ipv6_txoptions); 8391da177e4SLinus Torvalds 84041a1f8eaSYOSHIFUJI Hideaki err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass); 8411da177e4SLinus Torvalds if (err < 0) { 8421da177e4SLinus Torvalds fl6_sock_release(flowlabel); 8431da177e4SLinus Torvalds return err; 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) { 8461da177e4SLinus Torvalds flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); 8471da177e4SLinus Torvalds if (flowlabel == NULL) 8481da177e4SLinus Torvalds return -EINVAL; 8491da177e4SLinus Torvalds } 8501da177e4SLinus Torvalds if (!(opt->opt_nflen|opt->opt_flen)) 8511da177e4SLinus Torvalds opt = NULL; 8521da177e4SLinus Torvalds } 8531da177e4SLinus Torvalds if (opt == NULL) 8541da177e4SLinus Torvalds opt = np->opt; 855df9890c3SYOSHIFUJI Hideaki if (flowlabel) 8561da177e4SLinus Torvalds opt = fl6_merge_options(&opt_space, flowlabel, opt); 857df9890c3SYOSHIFUJI Hideaki opt = ipv6_fixup_options(&opt_space, opt); 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds fl.proto = proto; 860a27b58feSHeiko Carstens err = rawv6_probe_proto_opt(&fl, msg); 861a27b58feSHeiko Carstens if (err) 862a27b58feSHeiko Carstens goto out; 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, daddr); 8651da177e4SLinus Torvalds if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr)) 8661da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_src, &np->saddr); 8671da177e4SLinus Torvalds 8681da177e4SLinus Torvalds /* merge ip6_build_xmit from ip6_output */ 8691da177e4SLinus Torvalds if (opt && opt->srcrt) { 8701da177e4SLinus Torvalds struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt; 8711da177e4SLinus Torvalds ipv6_addr_copy(&final, &fl.fl6_dst); 8721da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, rt0->addr); 8731da177e4SLinus Torvalds final_p = &final; 8741da177e4SLinus Torvalds } 8751da177e4SLinus Torvalds 8761da177e4SLinus Torvalds if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) 8771da177e4SLinus Torvalds fl.oif = np->mcast_oif; 878beb8d13bSVenkat Yekkirala security_sk_classify_flow(sk, &fl); 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds err = ip6_dst_lookup(sk, &dst, &fl); 8811da177e4SLinus Torvalds if (err) 8821da177e4SLinus Torvalds goto out; 8831da177e4SLinus Torvalds if (final_p) 8841da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, final_p); 8851da177e4SLinus Torvalds 886bb72845eSHerbert Xu if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) { 88714e50e57SDavid S. Miller if (err == -EREMOTE) 88814e50e57SDavid S. Miller err = ip6_dst_blackhole(sk, &dst, &fl); 88914e50e57SDavid S. Miller if (err < 0) 8901da177e4SLinus Torvalds goto out; 89114e50e57SDavid S. Miller } 8921da177e4SLinus Torvalds 8931da177e4SLinus Torvalds if (hlimit < 0) { 8941da177e4SLinus Torvalds if (ipv6_addr_is_multicast(&fl.fl6_dst)) 8951da177e4SLinus Torvalds hlimit = np->mcast_hops; 8961da177e4SLinus Torvalds else 8971da177e4SLinus Torvalds hlimit = np->hop_limit; 8981da177e4SLinus Torvalds if (hlimit < 0) 8991da177e4SLinus Torvalds hlimit = dst_metric(dst, RTAX_HOPLIMIT); 9001da177e4SLinus Torvalds if (hlimit < 0) 9011da177e4SLinus Torvalds hlimit = ipv6_get_hoplimit(dst->dev); 9021da177e4SLinus Torvalds } 9031da177e4SLinus Torvalds 90441a1f8eaSYOSHIFUJI Hideaki if (tclass < 0) { 905e012d51cSYOSHIFUJI Hideaki tclass = np->tclass; 90641a1f8eaSYOSHIFUJI Hideaki if (tclass < 0) 90741a1f8eaSYOSHIFUJI Hideaki tclass = 0; 90841a1f8eaSYOSHIFUJI Hideaki } 90941a1f8eaSYOSHIFUJI Hideaki 9101da177e4SLinus Torvalds if (msg->msg_flags&MSG_CONFIRM) 9111da177e4SLinus Torvalds goto do_confirm; 9121da177e4SLinus Torvalds 9131da177e4SLinus Torvalds back_from_confirm: 9141da177e4SLinus Torvalds if (inet->hdrincl) { 9151da177e4SLinus Torvalds err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags); 9161da177e4SLinus Torvalds } else { 9171da177e4SLinus Torvalds lock_sock(sk); 91841a1f8eaSYOSHIFUJI Hideaki err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, 91941a1f8eaSYOSHIFUJI Hideaki len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst, 92041a1f8eaSYOSHIFUJI Hideaki msg->msg_flags); 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds if (err) 9231da177e4SLinus Torvalds ip6_flush_pending_frames(sk); 9241da177e4SLinus Torvalds else if (!(msg->msg_flags & MSG_MORE)) 925357b40a1SHerbert Xu err = rawv6_push_pending_frames(sk, &fl, rp); 9263ef9d943SYOSHIFUJI Hideaki release_sock(sk); 9271da177e4SLinus Torvalds } 9281da177e4SLinus Torvalds done: 9296d3e85ecSNicolas DICHTEL dst_release(dst); 9301da177e4SLinus Torvalds out: 9311da177e4SLinus Torvalds fl6_sock_release(flowlabel); 9321da177e4SLinus Torvalds return err<0?err:len; 9331da177e4SLinus Torvalds do_confirm: 9341da177e4SLinus Torvalds dst_confirm(dst); 9351da177e4SLinus Torvalds if (!(msg->msg_flags & MSG_PROBE) || len) 9361da177e4SLinus Torvalds goto back_from_confirm; 9371da177e4SLinus Torvalds err = 0; 9381da177e4SLinus Torvalds goto done; 9391da177e4SLinus Torvalds } 9401da177e4SLinus Torvalds 9411da177e4SLinus Torvalds static int rawv6_seticmpfilter(struct sock *sk, int level, int optname, 9421da177e4SLinus Torvalds char __user *optval, int optlen) 9431da177e4SLinus Torvalds { 9441da177e4SLinus Torvalds switch (optname) { 9451da177e4SLinus Torvalds case ICMPV6_FILTER: 9461da177e4SLinus Torvalds if (optlen > sizeof(struct icmp6_filter)) 9471da177e4SLinus Torvalds optlen = sizeof(struct icmp6_filter); 9481da177e4SLinus Torvalds if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen)) 9491da177e4SLinus Torvalds return -EFAULT; 9501da177e4SLinus Torvalds return 0; 9511da177e4SLinus Torvalds default: 9521da177e4SLinus Torvalds return -ENOPROTOOPT; 9533ff50b79SStephen Hemminger } 9541da177e4SLinus Torvalds 9551da177e4SLinus Torvalds return 0; 9561da177e4SLinus Torvalds } 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds static int rawv6_geticmpfilter(struct sock *sk, int level, int optname, 9591da177e4SLinus Torvalds char __user *optval, int __user *optlen) 9601da177e4SLinus Torvalds { 9611da177e4SLinus Torvalds int len; 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds switch (optname) { 9641da177e4SLinus Torvalds case ICMPV6_FILTER: 9651da177e4SLinus Torvalds if (get_user(len, optlen)) 9661da177e4SLinus Torvalds return -EFAULT; 9671da177e4SLinus Torvalds if (len < 0) 9681da177e4SLinus Torvalds return -EINVAL; 9691da177e4SLinus Torvalds if (len > sizeof(struct icmp6_filter)) 9701da177e4SLinus Torvalds len = sizeof(struct icmp6_filter); 9711da177e4SLinus Torvalds if (put_user(len, optlen)) 9721da177e4SLinus Torvalds return -EFAULT; 9731da177e4SLinus Torvalds if (copy_to_user(optval, &raw6_sk(sk)->filter, len)) 9741da177e4SLinus Torvalds return -EFAULT; 9751da177e4SLinus Torvalds return 0; 9761da177e4SLinus Torvalds default: 9771da177e4SLinus Torvalds return -ENOPROTOOPT; 9783ff50b79SStephen Hemminger } 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvalds return 0; 9811da177e4SLinus Torvalds } 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvalds 9843fdadf7dSDmitry Mishin static int do_rawv6_setsockopt(struct sock *sk, int level, int optname, 9851da177e4SLinus Torvalds char __user *optval, int optlen) 9861da177e4SLinus Torvalds { 9871da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 9881da177e4SLinus Torvalds int val; 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds if (get_user(val, (int __user *)optval)) 9911da177e4SLinus Torvalds return -EFAULT; 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds switch (optname) { 9941da177e4SLinus Torvalds case IPV6_CHECKSUM: 9951da177e4SLinus Torvalds /* You may get strange result with a positive odd offset; 9961da177e4SLinus Torvalds RFC2292bis agrees with me. */ 9971da177e4SLinus Torvalds if (val > 0 && (val&1)) 9981da177e4SLinus Torvalds return(-EINVAL); 9991da177e4SLinus Torvalds if (val < 0) { 10001da177e4SLinus Torvalds rp->checksum = 0; 10011da177e4SLinus Torvalds } else { 10021da177e4SLinus Torvalds rp->checksum = 1; 10031da177e4SLinus Torvalds rp->offset = val; 10041da177e4SLinus Torvalds } 10051da177e4SLinus Torvalds 10061da177e4SLinus Torvalds return 0; 10071da177e4SLinus Torvalds break; 10081da177e4SLinus Torvalds 10091da177e4SLinus Torvalds default: 10101da177e4SLinus Torvalds return(-ENOPROTOOPT); 10111da177e4SLinus Torvalds } 10121da177e4SLinus Torvalds } 10131da177e4SLinus Torvalds 10143fdadf7dSDmitry Mishin static int rawv6_setsockopt(struct sock *sk, int level, int optname, 10153fdadf7dSDmitry Mishin char __user *optval, int optlen) 10161da177e4SLinus Torvalds { 10171da177e4SLinus Torvalds switch(level) { 10181da177e4SLinus Torvalds case SOL_RAW: 10191da177e4SLinus Torvalds break; 10201da177e4SLinus Torvalds 10211da177e4SLinus Torvalds case SOL_ICMPV6: 10221da177e4SLinus Torvalds if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10231da177e4SLinus Torvalds return -EOPNOTSUPP; 10243fdadf7dSDmitry Mishin return rawv6_seticmpfilter(sk, level, optname, optval, 10251da177e4SLinus Torvalds optlen); 10261da177e4SLinus Torvalds case SOL_IPV6: 10271da177e4SLinus Torvalds if (optname == IPV6_CHECKSUM) 10281da177e4SLinus Torvalds break; 10291da177e4SLinus Torvalds default: 10303fdadf7dSDmitry Mishin return ipv6_setsockopt(sk, level, optname, optval, 10311da177e4SLinus Torvalds optlen); 10323ff50b79SStephen Hemminger } 10333ff50b79SStephen Hemminger 10343fdadf7dSDmitry Mishin return do_rawv6_setsockopt(sk, level, optname, optval, optlen); 10353fdadf7dSDmitry Mishin } 10363fdadf7dSDmitry Mishin 10373fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 10383fdadf7dSDmitry Mishin static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname, 10393fdadf7dSDmitry Mishin char __user *optval, int optlen) 10403fdadf7dSDmitry Mishin { 10413fdadf7dSDmitry Mishin switch (level) { 10423fdadf7dSDmitry Mishin case SOL_RAW: 10433fdadf7dSDmitry Mishin break; 10443fdadf7dSDmitry Mishin case SOL_ICMPV6: 10453fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10463fdadf7dSDmitry Mishin return -EOPNOTSUPP; 1047543d9cfeSArnaldo Carvalho de Melo return rawv6_seticmpfilter(sk, level, optname, optval, optlen); 10483fdadf7dSDmitry Mishin case SOL_IPV6: 10493fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 10503fdadf7dSDmitry Mishin break; 10513fdadf7dSDmitry Mishin default: 1052543d9cfeSArnaldo Carvalho de Melo return compat_ipv6_setsockopt(sk, level, optname, 1053543d9cfeSArnaldo Carvalho de Melo optval, optlen); 10543ff50b79SStephen Hemminger } 10553fdadf7dSDmitry Mishin return do_rawv6_setsockopt(sk, level, optname, optval, optlen); 10563fdadf7dSDmitry Mishin } 10573fdadf7dSDmitry Mishin #endif 10583fdadf7dSDmitry Mishin 10593fdadf7dSDmitry Mishin static int do_rawv6_getsockopt(struct sock *sk, int level, int optname, 10603fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 10613fdadf7dSDmitry Mishin { 10623fdadf7dSDmitry Mishin struct raw6_sock *rp = raw6_sk(sk); 10633fdadf7dSDmitry Mishin int val, len; 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds if (get_user(len,optlen)) 10661da177e4SLinus Torvalds return -EFAULT; 10671da177e4SLinus Torvalds 10681da177e4SLinus Torvalds switch (optname) { 10691da177e4SLinus Torvalds case IPV6_CHECKSUM: 10701da177e4SLinus Torvalds if (rp->checksum == 0) 10711da177e4SLinus Torvalds val = -1; 10721da177e4SLinus Torvalds else 10731da177e4SLinus Torvalds val = rp->offset; 10741da177e4SLinus Torvalds break; 10751da177e4SLinus Torvalds 10761da177e4SLinus Torvalds default: 10771da177e4SLinus Torvalds return -ENOPROTOOPT; 10781da177e4SLinus Torvalds } 10791da177e4SLinus Torvalds 10801da177e4SLinus Torvalds len = min_t(unsigned int, sizeof(int), len); 10811da177e4SLinus Torvalds 10821da177e4SLinus Torvalds if (put_user(len, optlen)) 10831da177e4SLinus Torvalds return -EFAULT; 10841da177e4SLinus Torvalds if (copy_to_user(optval,&val,len)) 10851da177e4SLinus Torvalds return -EFAULT; 10861da177e4SLinus Torvalds return 0; 10871da177e4SLinus Torvalds } 10881da177e4SLinus Torvalds 10893fdadf7dSDmitry Mishin static int rawv6_getsockopt(struct sock *sk, int level, int optname, 10903fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 10913fdadf7dSDmitry Mishin { 10923fdadf7dSDmitry Mishin switch(level) { 10933fdadf7dSDmitry Mishin case SOL_RAW: 10943fdadf7dSDmitry Mishin break; 10953fdadf7dSDmitry Mishin 10963fdadf7dSDmitry Mishin case SOL_ICMPV6: 10973fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10983fdadf7dSDmitry Mishin return -EOPNOTSUPP; 10993fdadf7dSDmitry Mishin return rawv6_geticmpfilter(sk, level, optname, optval, 11003fdadf7dSDmitry Mishin optlen); 11013fdadf7dSDmitry Mishin case SOL_IPV6: 11023fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 11033fdadf7dSDmitry Mishin break; 11043fdadf7dSDmitry Mishin default: 11053fdadf7dSDmitry Mishin return ipv6_getsockopt(sk, level, optname, optval, 11063fdadf7dSDmitry Mishin optlen); 11073ff50b79SStephen Hemminger } 11083ff50b79SStephen Hemminger 11093fdadf7dSDmitry Mishin return do_rawv6_getsockopt(sk, level, optname, optval, optlen); 11103fdadf7dSDmitry Mishin } 11113fdadf7dSDmitry Mishin 11123fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 11133fdadf7dSDmitry Mishin static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname, 11143fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 11153fdadf7dSDmitry Mishin { 11163fdadf7dSDmitry Mishin switch (level) { 11173fdadf7dSDmitry Mishin case SOL_RAW: 11183fdadf7dSDmitry Mishin break; 11193fdadf7dSDmitry Mishin case SOL_ICMPV6: 11203fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 11213fdadf7dSDmitry Mishin return -EOPNOTSUPP; 1122543d9cfeSArnaldo Carvalho de Melo return rawv6_geticmpfilter(sk, level, optname, optval, optlen); 11233fdadf7dSDmitry Mishin case SOL_IPV6: 11243fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 11253fdadf7dSDmitry Mishin break; 11263fdadf7dSDmitry Mishin default: 1127543d9cfeSArnaldo Carvalho de Melo return compat_ipv6_getsockopt(sk, level, optname, 1128543d9cfeSArnaldo Carvalho de Melo optval, optlen); 11293ff50b79SStephen Hemminger } 11303fdadf7dSDmitry Mishin return do_rawv6_getsockopt(sk, level, optname, optval, optlen); 11313fdadf7dSDmitry Mishin } 11323fdadf7dSDmitry Mishin #endif 11333fdadf7dSDmitry Mishin 11341da177e4SLinus Torvalds static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg) 11351da177e4SLinus Torvalds { 11361da177e4SLinus Torvalds switch(cmd) { 11371da177e4SLinus Torvalds case SIOCOUTQ: 11381da177e4SLinus Torvalds { 11391da177e4SLinus Torvalds int amount = atomic_read(&sk->sk_wmem_alloc); 11401da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 11411da177e4SLinus Torvalds } 11421da177e4SLinus Torvalds case SIOCINQ: 11431da177e4SLinus Torvalds { 11441da177e4SLinus Torvalds struct sk_buff *skb; 11451da177e4SLinus Torvalds int amount = 0; 11461da177e4SLinus Torvalds 1147e0f9f858SHerbert Xu spin_lock_bh(&sk->sk_receive_queue.lock); 11481da177e4SLinus Torvalds skb = skb_peek(&sk->sk_receive_queue); 11491da177e4SLinus Torvalds if (skb != NULL) 115027a884dcSArnaldo Carvalho de Melo amount = skb->tail - skb->transport_header; 1151e0f9f858SHerbert Xu spin_unlock_bh(&sk->sk_receive_queue.lock); 11521da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 11531da177e4SLinus Torvalds } 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds default: 11561da177e4SLinus Torvalds return -ENOIOCTLCMD; 11571da177e4SLinus Torvalds } 11581da177e4SLinus Torvalds } 11591da177e4SLinus Torvalds 11601da177e4SLinus Torvalds static void rawv6_close(struct sock *sk, long timeout) 11611da177e4SLinus Torvalds { 11621da177e4SLinus Torvalds if (inet_sk(sk)->num == IPPROTO_RAW) 11631da177e4SLinus Torvalds ip6_ra_control(sk, -1, NULL); 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds sk_common_release(sk); 11661da177e4SLinus Torvalds } 11671da177e4SLinus Torvalds 11681da177e4SLinus Torvalds static int rawv6_init_sk(struct sock *sk) 11691da177e4SLinus Torvalds { 11701da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 1171f48d5ff1SMasahide NAKAMURA 1172f48d5ff1SMasahide NAKAMURA switch (inet_sk(sk)->num) { 1173f48d5ff1SMasahide NAKAMURA case IPPROTO_ICMPV6: 11741da177e4SLinus Torvalds rp->checksum = 1; 11751da177e4SLinus Torvalds rp->offset = 2; 1176f48d5ff1SMasahide NAKAMURA break; 1177f48d5ff1SMasahide NAKAMURA case IPPROTO_MH: 1178f48d5ff1SMasahide NAKAMURA rp->checksum = 1; 1179f48d5ff1SMasahide NAKAMURA rp->offset = 4; 1180f48d5ff1SMasahide NAKAMURA break; 1181f48d5ff1SMasahide NAKAMURA default: 1182f48d5ff1SMasahide NAKAMURA break; 11831da177e4SLinus Torvalds } 11841da177e4SLinus Torvalds return(0); 11851da177e4SLinus Torvalds } 11861da177e4SLinus Torvalds 1187c5a432f1SEric Dumazet DEFINE_PROTO_INUSE(rawv6) 1188c5a432f1SEric Dumazet 11891da177e4SLinus Torvalds struct proto rawv6_prot = { 11901da177e4SLinus Torvalds .name = "RAWv6", 11911da177e4SLinus Torvalds .owner = THIS_MODULE, 11921da177e4SLinus Torvalds .close = rawv6_close, 11931da177e4SLinus Torvalds .connect = ip6_datagram_connect, 11941da177e4SLinus Torvalds .disconnect = udp_disconnect, 11951da177e4SLinus Torvalds .ioctl = rawv6_ioctl, 11961da177e4SLinus Torvalds .init = rawv6_init_sk, 11971da177e4SLinus Torvalds .destroy = inet6_destroy_sock, 11981da177e4SLinus Torvalds .setsockopt = rawv6_setsockopt, 11991da177e4SLinus Torvalds .getsockopt = rawv6_getsockopt, 12001da177e4SLinus Torvalds .sendmsg = rawv6_sendmsg, 12011da177e4SLinus Torvalds .recvmsg = rawv6_recvmsg, 12021da177e4SLinus Torvalds .bind = rawv6_bind, 12031da177e4SLinus Torvalds .backlog_rcv = rawv6_rcv_skb, 12041da177e4SLinus Torvalds .hash = raw_v6_hash, 12051da177e4SLinus Torvalds .unhash = raw_v6_unhash, 12061da177e4SLinus Torvalds .obj_size = sizeof(struct raw6_sock), 1207543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 1208543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_rawv6_setsockopt, 1209543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_rawv6_getsockopt, 1210543d9cfeSArnaldo Carvalho de Melo #endif 1211c5a432f1SEric Dumazet REF_PROTO_INUSE(rawv6) 12121da177e4SLinus Torvalds }; 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 12151da177e4SLinus Torvalds static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) 12161da177e4SLinus Torvalds { 12171da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sp); 12181da177e4SLinus Torvalds struct in6_addr *dest, *src; 12191da177e4SLinus Torvalds __u16 destp, srcp; 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds dest = &np->daddr; 12221da177e4SLinus Torvalds src = &np->rcv_saddr; 12231da177e4SLinus Torvalds destp = 0; 12241da177e4SLinus Torvalds srcp = inet_sk(sp)->num; 12251da177e4SLinus Torvalds seq_printf(seq, 12261da177e4SLinus Torvalds "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " 1227a92aa318SWang Chen "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n", 12281da177e4SLinus Torvalds i, 12291da177e4SLinus Torvalds src->s6_addr32[0], src->s6_addr32[1], 12301da177e4SLinus Torvalds src->s6_addr32[2], src->s6_addr32[3], srcp, 12311da177e4SLinus Torvalds dest->s6_addr32[0], dest->s6_addr32[1], 12321da177e4SLinus Torvalds dest->s6_addr32[2], dest->s6_addr32[3], destp, 12331da177e4SLinus Torvalds sp->sk_state, 12341da177e4SLinus Torvalds atomic_read(&sp->sk_wmem_alloc), 12351da177e4SLinus Torvalds atomic_read(&sp->sk_rmem_alloc), 12361da177e4SLinus Torvalds 0, 0L, 0, 12371da177e4SLinus Torvalds sock_i_uid(sp), 0, 12381da177e4SLinus Torvalds sock_i_ino(sp), 1239a92aa318SWang Chen atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); 12401da177e4SLinus Torvalds } 12411da177e4SLinus Torvalds 12421da177e4SLinus Torvalds static int raw6_seq_show(struct seq_file *seq, void *v) 12431da177e4SLinus Torvalds { 12441da177e4SLinus Torvalds if (v == SEQ_START_TOKEN) 12451da177e4SLinus Torvalds seq_printf(seq, 12461da177e4SLinus Torvalds " sl " 12471da177e4SLinus Torvalds "local_address " 12481da177e4SLinus Torvalds "remote_address " 12491da177e4SLinus Torvalds "st tx_queue rx_queue tr tm->when retrnsmt" 1250a92aa318SWang Chen " uid timeout inode drops\n"); 12511da177e4SLinus Torvalds else 125242a73808SPavel Emelyanov raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); 12531da177e4SLinus Torvalds return 0; 12541da177e4SLinus Torvalds } 12551da177e4SLinus Torvalds 125656b3d975SPhilippe De Muyter static const struct seq_operations raw6_seq_ops = { 125742a73808SPavel Emelyanov .start = raw_seq_start, 125842a73808SPavel Emelyanov .next = raw_seq_next, 125942a73808SPavel Emelyanov .stop = raw_seq_stop, 12601da177e4SLinus Torvalds .show = raw6_seq_show, 12611da177e4SLinus Torvalds }; 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds static int raw6_seq_open(struct inode *inode, struct file *file) 12641da177e4SLinus Torvalds { 12653046d767SDenis V. Lunev return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops); 12661da177e4SLinus Torvalds } 12671da177e4SLinus Torvalds 12689a32144eSArjan van de Ven static const struct file_operations raw6_seq_fops = { 12691da177e4SLinus Torvalds .owner = THIS_MODULE, 12701da177e4SLinus Torvalds .open = raw6_seq_open, 12711da177e4SLinus Torvalds .read = seq_read, 12721da177e4SLinus Torvalds .llseek = seq_lseek, 1273f51d599fSPavel Emelyanov .release = seq_release_net, 12741da177e4SLinus Torvalds }; 12751da177e4SLinus Torvalds 1276a308da16SPavel Emelyanov static int raw6_init_net(struct net *net) 1277a308da16SPavel Emelyanov { 1278a308da16SPavel Emelyanov if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops)) 1279a308da16SPavel Emelyanov return -ENOMEM; 1280a308da16SPavel Emelyanov 1281a308da16SPavel Emelyanov return 0; 1282a308da16SPavel Emelyanov } 1283a308da16SPavel Emelyanov 1284a308da16SPavel Emelyanov static void raw6_exit_net(struct net *net) 1285a308da16SPavel Emelyanov { 1286a308da16SPavel Emelyanov proc_net_remove(net, "raw6"); 1287a308da16SPavel Emelyanov } 1288a308da16SPavel Emelyanov 1289a308da16SPavel Emelyanov static struct pernet_operations raw6_net_ops = { 1290a308da16SPavel Emelyanov .init = raw6_init_net, 1291a308da16SPavel Emelyanov .exit = raw6_exit_net, 1292a308da16SPavel Emelyanov }; 1293a308da16SPavel Emelyanov 12941da177e4SLinus Torvalds int __init raw6_proc_init(void) 12951da177e4SLinus Torvalds { 1296a308da16SPavel Emelyanov return register_pernet_subsys(&raw6_net_ops); 12971da177e4SLinus Torvalds } 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds void raw6_proc_exit(void) 13001da177e4SLinus Torvalds { 1301a308da16SPavel Emelyanov unregister_pernet_subsys(&raw6_net_ops); 13021da177e4SLinus Torvalds } 13031da177e4SLinus Torvalds #endif /* CONFIG_PROC_FS */ 13047f4e4868SDaniel Lezcano 13057f4e4868SDaniel Lezcano /* Same as inet6_dgram_ops, sans udp_poll. */ 13067f4e4868SDaniel Lezcano static const struct proto_ops inet6_sockraw_ops = { 13077f4e4868SDaniel Lezcano .family = PF_INET6, 13087f4e4868SDaniel Lezcano .owner = THIS_MODULE, 13097f4e4868SDaniel Lezcano .release = inet6_release, 13107f4e4868SDaniel Lezcano .bind = inet6_bind, 13117f4e4868SDaniel Lezcano .connect = inet_dgram_connect, /* ok */ 13127f4e4868SDaniel Lezcano .socketpair = sock_no_socketpair, /* a do nothing */ 13137f4e4868SDaniel Lezcano .accept = sock_no_accept, /* a do nothing */ 13147f4e4868SDaniel Lezcano .getname = inet6_getname, 13157f4e4868SDaniel Lezcano .poll = datagram_poll, /* ok */ 13167f4e4868SDaniel Lezcano .ioctl = inet6_ioctl, /* must change */ 13177f4e4868SDaniel Lezcano .listen = sock_no_listen, /* ok */ 13187f4e4868SDaniel Lezcano .shutdown = inet_shutdown, /* ok */ 13197f4e4868SDaniel Lezcano .setsockopt = sock_common_setsockopt, /* ok */ 13207f4e4868SDaniel Lezcano .getsockopt = sock_common_getsockopt, /* ok */ 13217f4e4868SDaniel Lezcano .sendmsg = inet_sendmsg, /* ok */ 13227f4e4868SDaniel Lezcano .recvmsg = sock_common_recvmsg, /* ok */ 13237f4e4868SDaniel Lezcano .mmap = sock_no_mmap, 13247f4e4868SDaniel Lezcano .sendpage = sock_no_sendpage, 13257f4e4868SDaniel Lezcano #ifdef CONFIG_COMPAT 13267f4e4868SDaniel Lezcano .compat_setsockopt = compat_sock_common_setsockopt, 13277f4e4868SDaniel Lezcano .compat_getsockopt = compat_sock_common_getsockopt, 13287f4e4868SDaniel Lezcano #endif 13297f4e4868SDaniel Lezcano }; 13307f4e4868SDaniel Lezcano 13317f4e4868SDaniel Lezcano static struct inet_protosw rawv6_protosw = { 13327f4e4868SDaniel Lezcano .type = SOCK_RAW, 13337f4e4868SDaniel Lezcano .protocol = IPPROTO_IP, /* wild card */ 13347f4e4868SDaniel Lezcano .prot = &rawv6_prot, 13357f4e4868SDaniel Lezcano .ops = &inet6_sockraw_ops, 13367f4e4868SDaniel Lezcano .capability = CAP_NET_RAW, 13377f4e4868SDaniel Lezcano .no_check = UDP_CSUM_DEFAULT, 13387f4e4868SDaniel Lezcano .flags = INET_PROTOSW_REUSE, 13397f4e4868SDaniel Lezcano }; 13407f4e4868SDaniel Lezcano 13417f4e4868SDaniel Lezcano int __init rawv6_init(void) 13427f4e4868SDaniel Lezcano { 13437f4e4868SDaniel Lezcano int ret; 13447f4e4868SDaniel Lezcano 13457f4e4868SDaniel Lezcano ret = inet6_register_protosw(&rawv6_protosw); 13467f4e4868SDaniel Lezcano if (ret) 13477f4e4868SDaniel Lezcano goto out; 13487f4e4868SDaniel Lezcano out: 13497f4e4868SDaniel Lezcano return ret; 13507f4e4868SDaniel Lezcano } 13517f4e4868SDaniel Lezcano 135209f7709fSDaniel Lezcano void rawv6_exit(void) 13537f4e4868SDaniel Lezcano { 13547f4e4868SDaniel Lezcano inet6_unregister_protosw(&rawv6_protosw); 13557f4e4868SDaniel Lezcano } 1356