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 571da177e4SLinus Torvalds #include <net/rawv6.h> 581da177e4SLinus Torvalds #include <net/xfrm.h> 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds #include <linux/proc_fs.h> 611da177e4SLinus Torvalds #include <linux/seq_file.h> 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE]; 641da177e4SLinus Torvalds DEFINE_RWLOCK(raw_v6_lock); 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds static void raw_v6_hash(struct sock *sk) 671da177e4SLinus Torvalds { 681da177e4SLinus Torvalds struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num & 691da177e4SLinus Torvalds (RAWV6_HTABLE_SIZE - 1)]; 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds write_lock_bh(&raw_v6_lock); 721da177e4SLinus Torvalds sk_add_node(sk, list); 731da177e4SLinus Torvalds sock_prot_inc_use(sk->sk_prot); 741da177e4SLinus Torvalds write_unlock_bh(&raw_v6_lock); 751da177e4SLinus Torvalds } 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds static void raw_v6_unhash(struct sock *sk) 781da177e4SLinus Torvalds { 791da177e4SLinus Torvalds write_lock_bh(&raw_v6_lock); 801da177e4SLinus Torvalds if (sk_del_node_init(sk)) 811da177e4SLinus Torvalds sock_prot_dec_use(sk->sk_prot); 821da177e4SLinus Torvalds write_unlock_bh(&raw_v6_lock); 831da177e4SLinus Torvalds } 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds /* Grumble... icmp and ip_input want to get at this... */ 871da177e4SLinus Torvalds struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num, 880bd1b59bSAndrew McDonald struct in6_addr *loc_addr, struct in6_addr *rmt_addr, 890bd1b59bSAndrew McDonald int dif) 901da177e4SLinus Torvalds { 911da177e4SLinus Torvalds struct hlist_node *node; 921da177e4SLinus Torvalds int is_multicast = ipv6_addr_is_multicast(loc_addr); 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds sk_for_each_from(sk, node) 951da177e4SLinus Torvalds if (inet_sk(sk)->num == num) { 961da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds if (!ipv6_addr_any(&np->daddr) && 991da177e4SLinus Torvalds !ipv6_addr_equal(&np->daddr, rmt_addr)) 1001da177e4SLinus Torvalds continue; 1011da177e4SLinus Torvalds 1020bd1b59bSAndrew McDonald if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif) 1030bd1b59bSAndrew McDonald continue; 1040bd1b59bSAndrew McDonald 1051da177e4SLinus Torvalds if (!ipv6_addr_any(&np->rcv_saddr)) { 1061da177e4SLinus Torvalds if (ipv6_addr_equal(&np->rcv_saddr, loc_addr)) 1071da177e4SLinus Torvalds goto found; 1081da177e4SLinus Torvalds if (is_multicast && 1091da177e4SLinus Torvalds inet6_mc_check(sk, loc_addr, rmt_addr)) 1101da177e4SLinus Torvalds goto found; 1111da177e4SLinus Torvalds continue; 1121da177e4SLinus Torvalds } 1131da177e4SLinus Torvalds goto found; 1141da177e4SLinus Torvalds } 1151da177e4SLinus Torvalds sk = NULL; 1161da177e4SLinus Torvalds found: 1171da177e4SLinus Torvalds return sk; 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds /* 1211da177e4SLinus Torvalds * 0 - deliver 1221da177e4SLinus Torvalds * 1 - block 1231da177e4SLinus Torvalds */ 1241da177e4SLinus Torvalds static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb) 1251da177e4SLinus Torvalds { 1261da177e4SLinus Torvalds struct icmp6hdr *icmph; 1271da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) { 1301da177e4SLinus Torvalds __u32 *data = &rp->filter.data[0]; 1311da177e4SLinus Torvalds int bit_nr; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds icmph = (struct icmp6hdr *) skb->data; 1341da177e4SLinus Torvalds bit_nr = icmph->icmp6_type; 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0; 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds return 0; 1391da177e4SLinus Torvalds } 1401da177e4SLinus Torvalds 14159fbb3a6SMasahide NAKAMURA #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) 14259fbb3a6SMasahide NAKAMURA static int (*mh_filter)(struct sock *sock, struct sk_buff *skb); 14359fbb3a6SMasahide NAKAMURA 14459fbb3a6SMasahide NAKAMURA int rawv6_mh_filter_register(int (*filter)(struct sock *sock, 14559fbb3a6SMasahide NAKAMURA struct sk_buff *skb)) 14659fbb3a6SMasahide NAKAMURA { 14759fbb3a6SMasahide NAKAMURA rcu_assign_pointer(mh_filter, filter); 14859fbb3a6SMasahide NAKAMURA return 0; 14959fbb3a6SMasahide NAKAMURA } 15059fbb3a6SMasahide NAKAMURA EXPORT_SYMBOL(rawv6_mh_filter_register); 15159fbb3a6SMasahide NAKAMURA 15259fbb3a6SMasahide NAKAMURA int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock, 15359fbb3a6SMasahide NAKAMURA struct sk_buff *skb)) 15459fbb3a6SMasahide NAKAMURA { 15559fbb3a6SMasahide NAKAMURA rcu_assign_pointer(mh_filter, NULL); 15659fbb3a6SMasahide NAKAMURA synchronize_rcu(); 15759fbb3a6SMasahide NAKAMURA return 0; 15859fbb3a6SMasahide NAKAMURA } 15959fbb3a6SMasahide NAKAMURA EXPORT_SYMBOL(rawv6_mh_filter_unregister); 16059fbb3a6SMasahide NAKAMURA 16159fbb3a6SMasahide NAKAMURA #endif 16259fbb3a6SMasahide NAKAMURA 1631da177e4SLinus Torvalds /* 1641da177e4SLinus Torvalds * demultiplex raw sockets. 1651da177e4SLinus Torvalds * (should consider queueing the skb in the sock receive_queue 1661da177e4SLinus Torvalds * without calling rawv6.c) 1671da177e4SLinus Torvalds * 1681da177e4SLinus Torvalds * Caller owns SKB so we must make clones. 1691da177e4SLinus Torvalds */ 170d13964f4SPatrick McHardy int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) 1711da177e4SLinus Torvalds { 1721da177e4SLinus Torvalds struct in6_addr *saddr; 1731da177e4SLinus Torvalds struct in6_addr *daddr; 1741da177e4SLinus Torvalds struct sock *sk; 175d13964f4SPatrick McHardy int delivered = 0; 1761da177e4SLinus Torvalds __u8 hash; 1771da177e4SLinus Torvalds 1780660e03fSArnaldo Carvalho de Melo saddr = &ipv6_hdr(skb)->saddr; 1791da177e4SLinus Torvalds daddr = saddr + 1; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds hash = nexthdr & (MAX_INET_PROTOS - 1); 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds read_lock(&raw_v6_lock); 1841da177e4SLinus Torvalds sk = sk_head(&raw_v6_htable[hash]); 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds /* 1871da177e4SLinus Torvalds * The first socket found will be delivered after 1881da177e4SLinus Torvalds * delivery to transport protocols. 1891da177e4SLinus Torvalds */ 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds if (sk == NULL) 1921da177e4SLinus Torvalds goto out; 1931da177e4SLinus Torvalds 1942dac4b96SYOSHIFUJI Hideaki sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds while (sk) { 1977be96f76SMasahide NAKAMURA int filtered; 1987be96f76SMasahide NAKAMURA 199d13964f4SPatrick McHardy delivered = 1; 2007be96f76SMasahide NAKAMURA switch (nexthdr) { 2017be96f76SMasahide NAKAMURA case IPPROTO_ICMPV6: 2027be96f76SMasahide NAKAMURA filtered = icmpv6_filter(sk, skb); 2037be96f76SMasahide NAKAMURA break; 20459fbb3a6SMasahide NAKAMURA 20559fbb3a6SMasahide NAKAMURA #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) 2067be96f76SMasahide NAKAMURA case IPPROTO_MH: 20759fbb3a6SMasahide NAKAMURA { 2087be96f76SMasahide NAKAMURA /* XXX: To validate MH only once for each packet, 2097be96f76SMasahide NAKAMURA * this is placed here. It should be after checking 2107be96f76SMasahide NAKAMURA * xfrm policy, however it doesn't. The checking xfrm 2117be96f76SMasahide NAKAMURA * policy is placed in rawv6_rcv() because it is 2127be96f76SMasahide NAKAMURA * required for each socket. 2137be96f76SMasahide NAKAMURA */ 21459fbb3a6SMasahide NAKAMURA int (*filter)(struct sock *sock, struct sk_buff *skb); 21559fbb3a6SMasahide NAKAMURA 21659fbb3a6SMasahide NAKAMURA filter = rcu_dereference(mh_filter); 21759fbb3a6SMasahide NAKAMURA filtered = filter ? filter(sk, skb) : 0; 2187be96f76SMasahide NAKAMURA break; 21959fbb3a6SMasahide NAKAMURA } 2207be96f76SMasahide NAKAMURA #endif 2217be96f76SMasahide NAKAMURA default: 2227be96f76SMasahide NAKAMURA filtered = 0; 2237be96f76SMasahide NAKAMURA break; 2247be96f76SMasahide NAKAMURA } 2257be96f76SMasahide NAKAMURA 2267be96f76SMasahide NAKAMURA if (filtered < 0) 2277be96f76SMasahide NAKAMURA break; 2287be96f76SMasahide NAKAMURA if (filtered == 0) { 2291da177e4SLinus Torvalds struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds /* Not releasing hash table! */ 2329fb9cbb1SYasuyuki Kozakai if (clone) { 2339fb9cbb1SYasuyuki Kozakai nf_reset(clone); 2341da177e4SLinus Torvalds rawv6_rcv(sk, clone); 2351da177e4SLinus Torvalds } 2369fb9cbb1SYasuyuki Kozakai } 2370bd1b59bSAndrew McDonald sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr, 2382dac4b96SYOSHIFUJI Hideaki IP6CB(skb)->iif); 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds out: 2411da177e4SLinus Torvalds read_unlock(&raw_v6_lock); 242d13964f4SPatrick McHardy return delivered; 2431da177e4SLinus Torvalds } 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds /* This cleans up af_inet6 a bit. -DaveM */ 2461da177e4SLinus Torvalds static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) 2471da177e4SLinus Torvalds { 2481da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 2491da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 2501da177e4SLinus Torvalds struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr; 251e69a4adcSAl Viro __be32 v4addr = 0; 2521da177e4SLinus Torvalds int addr_type; 2531da177e4SLinus Torvalds int err; 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 2561da177e4SLinus Torvalds return -EINVAL; 2571da177e4SLinus Torvalds addr_type = ipv6_addr_type(&addr->sin6_addr); 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds /* Raw sockets are IPv6 only */ 2601da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) 2611da177e4SLinus Torvalds return(-EADDRNOTAVAIL); 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds lock_sock(sk); 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds err = -EINVAL; 2661da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE) 2671da177e4SLinus Torvalds goto out; 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds /* Check if the address belongs to the host. */ 2701da177e4SLinus Torvalds if (addr_type != IPV6_ADDR_ANY) { 2711da177e4SLinus Torvalds struct net_device *dev = NULL; 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds if (addr_type & IPV6_ADDR_LINKLOCAL) { 2741da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2751da177e4SLinus Torvalds addr->sin6_scope_id) { 2761da177e4SLinus Torvalds /* Override any existing binding, if another 2771da177e4SLinus Torvalds * one is supplied by user. 2781da177e4SLinus Torvalds */ 2791da177e4SLinus Torvalds sk->sk_bound_dev_if = addr->sin6_scope_id; 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds /* Binding to link-local address requires an interface */ 2831da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) 2841da177e4SLinus Torvalds goto out; 2851da177e4SLinus Torvalds 286881d966bSEric W. Biederman dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if); 2871da177e4SLinus Torvalds if (!dev) { 2881da177e4SLinus Torvalds err = -ENODEV; 2891da177e4SLinus Torvalds goto out; 2901da177e4SLinus Torvalds } 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds /* ipv4 addr of the socket is invalid. Only the 2941da177e4SLinus Torvalds * unspecified and mapped address have a v4 equivalent. 2951da177e4SLinus Torvalds */ 2961da177e4SLinus Torvalds v4addr = LOOPBACK4_IPV6; 2971da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) { 2981da177e4SLinus Torvalds err = -EADDRNOTAVAIL; 2991da177e4SLinus Torvalds if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { 3001da177e4SLinus Torvalds if (dev) 3011da177e4SLinus Torvalds dev_put(dev); 3021da177e4SLinus Torvalds goto out; 3031da177e4SLinus Torvalds } 3041da177e4SLinus Torvalds } 3051da177e4SLinus Torvalds if (dev) 3061da177e4SLinus Torvalds dev_put(dev); 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds inet->rcv_saddr = inet->saddr = v4addr; 3101da177e4SLinus Torvalds ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr); 3111da177e4SLinus Torvalds if (!(addr_type & IPV6_ADDR_MULTICAST)) 3121da177e4SLinus Torvalds ipv6_addr_copy(&np->saddr, &addr->sin6_addr); 3131da177e4SLinus Torvalds err = 0; 3141da177e4SLinus Torvalds out: 3151da177e4SLinus Torvalds release_sock(sk); 3161da177e4SLinus Torvalds return err; 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds void rawv6_err(struct sock *sk, struct sk_buff *skb, 3201da177e4SLinus Torvalds struct inet6_skb_parm *opt, 32104ce6909SAl Viro int type, int code, int offset, __be32 info) 3221da177e4SLinus Torvalds { 3231da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 3241da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 3251da177e4SLinus Torvalds int err; 3261da177e4SLinus Torvalds int harderr; 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds /* Report error on raw socket, if: 3291da177e4SLinus Torvalds 1. User requested recverr. 3301da177e4SLinus Torvalds 2. Socket is connected (otherwise the error indication 3311da177e4SLinus Torvalds is useless without recverr and error is hard. 3321da177e4SLinus Torvalds */ 3331da177e4SLinus Torvalds if (!np->recverr && sk->sk_state != TCP_ESTABLISHED) 3341da177e4SLinus Torvalds return; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds harderr = icmpv6_err_convert(type, code, &err); 3371da177e4SLinus Torvalds if (type == ICMPV6_PKT_TOOBIG) 3381da177e4SLinus Torvalds harderr = (np->pmtudisc == IPV6_PMTUDISC_DO); 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds if (np->recverr) { 3411da177e4SLinus Torvalds u8 *payload = skb->data; 3421da177e4SLinus Torvalds if (!inet->hdrincl) 3431da177e4SLinus Torvalds payload += offset; 3441da177e4SLinus Torvalds ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload); 3451da177e4SLinus Torvalds } 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds if (np->recverr || harderr) { 3481da177e4SLinus Torvalds sk->sk_err = err; 3491da177e4SLinus Torvalds sk->sk_error_report(sk); 3501da177e4SLinus Torvalds } 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb) 3541da177e4SLinus Torvalds { 3551da177e4SLinus Torvalds if ((raw6_sk(sk)->checksum || sk->sk_filter) && 356fb286bb2SHerbert Xu skb_checksum_complete(skb)) { 357a92aa318SWang Chen atomic_inc(&sk->sk_drops); 3581da177e4SLinus Torvalds kfree_skb(skb); 3591da177e4SLinus Torvalds return 0; 3601da177e4SLinus Torvalds } 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds /* Charge it to the socket. */ 3631da177e4SLinus Torvalds if (sock_queue_rcv_skb(sk,skb)<0) { 364a92aa318SWang Chen atomic_inc(&sk->sk_drops); 3651da177e4SLinus Torvalds kfree_skb(skb); 3661da177e4SLinus Torvalds return 0; 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds return 0; 3701da177e4SLinus Torvalds } 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds /* 3731da177e4SLinus Torvalds * This is next to useless... 3741da177e4SLinus Torvalds * if we demultiplex in network layer we don't need the extra call 3751da177e4SLinus Torvalds * just to queue the skb... 3761da177e4SLinus Torvalds * maybe we could have the network decide upon a hint if it 3771da177e4SLinus Torvalds * should call raw_rcv for demultiplexing 3781da177e4SLinus Torvalds */ 3791da177e4SLinus Torvalds int rawv6_rcv(struct sock *sk, struct sk_buff *skb) 3801da177e4SLinus Torvalds { 3811da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 3821da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) { 385a92aa318SWang Chen atomic_inc(&sk->sk_drops); 3861da177e4SLinus Torvalds kfree_skb(skb); 3871da177e4SLinus Torvalds return NET_RX_DROP; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds if (!rp->checksum) 3911da177e4SLinus Torvalds skb->ip_summed = CHECKSUM_UNNECESSARY; 3921da177e4SLinus Torvalds 39384fa7933SPatrick McHardy if (skb->ip_summed == CHECKSUM_COMPLETE) { 394d56f90a7SArnaldo Carvalho de Melo skb_postpull_rcsum(skb, skb_network_header(skb), 395cfe1fc77SArnaldo Carvalho de Melo skb_network_header_len(skb)); 3960660e03fSArnaldo Carvalho de Melo if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 3970660e03fSArnaldo Carvalho de Melo &ipv6_hdr(skb)->daddr, 398fb286bb2SHerbert Xu skb->len, inet->num, skb->csum)) 399fb286bb2SHerbert Xu skb->ip_summed = CHECKSUM_UNNECESSARY; 4001da177e4SLinus Torvalds } 40160476372SHerbert Xu if (!skb_csum_unnecessary(skb)) 4020660e03fSArnaldo Carvalho de Melo skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 4030660e03fSArnaldo Carvalho de Melo &ipv6_hdr(skb)->daddr, 4040660e03fSArnaldo Carvalho de Melo skb->len, 4050660e03fSArnaldo Carvalho de Melo inet->num, 0)); 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds if (inet->hdrincl) { 408fb286bb2SHerbert Xu if (skb_checksum_complete(skb)) { 409a92aa318SWang Chen atomic_inc(&sk->sk_drops); 4101da177e4SLinus Torvalds kfree_skb(skb); 4111da177e4SLinus Torvalds return 0; 4121da177e4SLinus Torvalds } 4131da177e4SLinus Torvalds } 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds rawv6_rcv_skb(sk, skb); 4161da177e4SLinus Torvalds return 0; 4171da177e4SLinus Torvalds } 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds /* 4211da177e4SLinus Torvalds * This should be easy, if there is something there 4221da177e4SLinus Torvalds * we return it, otherwise we block. 4231da177e4SLinus Torvalds */ 4241da177e4SLinus Torvalds 4251da177e4SLinus Torvalds static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk, 4261da177e4SLinus Torvalds struct msghdr *msg, size_t len, 4271da177e4SLinus Torvalds int noblock, int flags, int *addr_len) 4281da177e4SLinus Torvalds { 4291da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4301da177e4SLinus Torvalds struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name; 4311da177e4SLinus Torvalds struct sk_buff *skb; 4321da177e4SLinus Torvalds size_t copied; 4331da177e4SLinus Torvalds int err; 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds if (flags & MSG_OOB) 4361da177e4SLinus Torvalds return -EOPNOTSUPP; 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds if (addr_len) 4391da177e4SLinus Torvalds *addr_len=sizeof(*sin6); 4401da177e4SLinus Torvalds 4411da177e4SLinus Torvalds if (flags & MSG_ERRQUEUE) 4421da177e4SLinus Torvalds return ipv6_recv_error(sk, msg, len); 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds skb = skb_recv_datagram(sk, flags, noblock, &err); 4451da177e4SLinus Torvalds if (!skb) 4461da177e4SLinus Torvalds goto out; 4471da177e4SLinus Torvalds 4481da177e4SLinus Torvalds copied = skb->len; 4491da177e4SLinus Torvalds if (copied > len) { 4501da177e4SLinus Torvalds copied = len; 4511da177e4SLinus Torvalds msg->msg_flags |= MSG_TRUNC; 4521da177e4SLinus Torvalds } 4531da177e4SLinus Torvalds 45460476372SHerbert Xu if (skb_csum_unnecessary(skb)) { 4551da177e4SLinus Torvalds err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); 4561da177e4SLinus Torvalds } else if (msg->msg_flags&MSG_TRUNC) { 457fb286bb2SHerbert Xu if (__skb_checksum_complete(skb)) 4581da177e4SLinus Torvalds goto csum_copy_err; 4591da177e4SLinus Torvalds err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); 4601da177e4SLinus Torvalds } else { 4611da177e4SLinus Torvalds err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov); 4621da177e4SLinus Torvalds if (err == -EINVAL) 4631da177e4SLinus Torvalds goto csum_copy_err; 4641da177e4SLinus Torvalds } 4651da177e4SLinus Torvalds if (err) 4661da177e4SLinus Torvalds goto out_free; 4671da177e4SLinus Torvalds 4681da177e4SLinus Torvalds /* Copy the address. */ 4691da177e4SLinus Torvalds if (sin6) { 4701da177e4SLinus Torvalds sin6->sin6_family = AF_INET6; 471f59fc7f3STetsuo Handa sin6->sin6_port = 0; 4720660e03fSArnaldo Carvalho de Melo ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr); 4731da177e4SLinus Torvalds sin6->sin6_flowinfo = 0; 4741da177e4SLinus Torvalds sin6->sin6_scope_id = 0; 4751da177e4SLinus Torvalds if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) 4761da177e4SLinus Torvalds sin6->sin6_scope_id = IP6CB(skb)->iif; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds sock_recv_timestamp(msg, sk, skb); 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds if (np->rxopt.all) 4821da177e4SLinus Torvalds datagram_recv_ctl(sk, msg, skb); 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvalds err = copied; 4851da177e4SLinus Torvalds if (flags & MSG_TRUNC) 4861da177e4SLinus Torvalds err = skb->len; 4871da177e4SLinus Torvalds 4881da177e4SLinus Torvalds out_free: 4891da177e4SLinus Torvalds skb_free_datagram(sk, skb); 4901da177e4SLinus Torvalds out: 4911da177e4SLinus Torvalds return err; 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds csum_copy_err: 4943305b80cSHerbert Xu skb_kill_datagram(sk, skb, flags); 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds /* Error for blocking case is chosen to masquerade 4971da177e4SLinus Torvalds as some normal condition. 4981da177e4SLinus Torvalds */ 4991da177e4SLinus Torvalds err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH; 500a92aa318SWang Chen atomic_inc(&sk->sk_drops); 5013305b80cSHerbert Xu goto out; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl, 505357b40a1SHerbert Xu struct raw6_sock *rp) 5061da177e4SLinus Torvalds { 5071da177e4SLinus Torvalds struct sk_buff *skb; 5081da177e4SLinus Torvalds int err = 0; 509357b40a1SHerbert Xu int offset; 510357b40a1SHerbert Xu int len; 511679a8738SHerbert Xu int total_len; 512868c86bcSAl Viro __wsum tmp_csum; 513868c86bcSAl Viro __sum16 csum; 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds if (!rp->checksum) 5161da177e4SLinus Torvalds goto send; 5171da177e4SLinus Torvalds 5181da177e4SLinus Torvalds if ((skb = skb_peek(&sk->sk_write_queue)) == NULL) 5191da177e4SLinus Torvalds goto out; 5201da177e4SLinus Torvalds 521357b40a1SHerbert Xu offset = rp->offset; 522d56f90a7SArnaldo Carvalho de Melo total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) - 523d56f90a7SArnaldo Carvalho de Melo skb->data); 524679a8738SHerbert Xu if (offset >= total_len - 1) { 5251da177e4SLinus Torvalds err = -EINVAL; 526357b40a1SHerbert Xu ip6_flush_pending_frames(sk); 5271da177e4SLinus Torvalds goto out; 5281da177e4SLinus Torvalds } 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds /* should be check HW csum miyazawa */ 5311da177e4SLinus Torvalds if (skb_queue_len(&sk->sk_write_queue) == 1) { 5321da177e4SLinus Torvalds /* 5331da177e4SLinus Torvalds * Only one fragment on the socket. 5341da177e4SLinus Torvalds */ 5351da177e4SLinus Torvalds tmp_csum = skb->csum; 5361da177e4SLinus Torvalds } else { 537357b40a1SHerbert Xu struct sk_buff *csum_skb = NULL; 5381da177e4SLinus Torvalds tmp_csum = 0; 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds skb_queue_walk(&sk->sk_write_queue, skb) { 5411da177e4SLinus Torvalds tmp_csum = csum_add(tmp_csum, skb->csum); 542357b40a1SHerbert Xu 543357b40a1SHerbert Xu if (csum_skb) 544357b40a1SHerbert Xu continue; 545357b40a1SHerbert Xu 546ea2ae17dSArnaldo Carvalho de Melo len = skb->len - skb_transport_offset(skb); 547357b40a1SHerbert Xu if (offset >= len) { 548357b40a1SHerbert Xu offset -= len; 549357b40a1SHerbert Xu continue; 5501da177e4SLinus Torvalds } 551357b40a1SHerbert Xu 552357b40a1SHerbert Xu csum_skb = skb; 5531da177e4SLinus Torvalds } 5541da177e4SLinus Torvalds 555357b40a1SHerbert Xu skb = csum_skb; 556357b40a1SHerbert Xu } 557357b40a1SHerbert Xu 558ea2ae17dSArnaldo Carvalho de Melo offset += skb_transport_offset(skb); 559357b40a1SHerbert Xu if (skb_copy_bits(skb, offset, &csum, 2)) 560357b40a1SHerbert Xu BUG(); 561357b40a1SHerbert Xu 5621da177e4SLinus Torvalds /* in case cksum was not initialized */ 563357b40a1SHerbert Xu if (unlikely(csum)) 5645f92a738SAl Viro tmp_csum = csum_sub(tmp_csum, csum_unfold(csum)); 5651da177e4SLinus Torvalds 566868c86bcSAl Viro csum = csum_ipv6_magic(&fl->fl6_src, 5671da177e4SLinus Torvalds &fl->fl6_dst, 568679a8738SHerbert Xu total_len, fl->proto, tmp_csum); 5691da177e4SLinus Torvalds 570f6ab0288SAl Viro if (csum == 0 && fl->proto == IPPROTO_UDP) 571f6ab0288SAl Viro csum = CSUM_MANGLED_0; 572357b40a1SHerbert Xu 573357b40a1SHerbert Xu if (skb_store_bits(skb, offset, &csum, 2)) 574357b40a1SHerbert Xu BUG(); 575357b40a1SHerbert Xu 5761da177e4SLinus Torvalds send: 5771da177e4SLinus Torvalds err = ip6_push_pending_frames(sk); 5781da177e4SLinus Torvalds out: 5791da177e4SLinus Torvalds return err; 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds static int rawv6_send_hdrinc(struct sock *sk, void *from, int length, 5831da177e4SLinus Torvalds struct flowi *fl, struct rt6_info *rt, 5841da177e4SLinus Torvalds unsigned int flags) 5851da177e4SLinus Torvalds { 5863320da89SHerbert Xu struct ipv6_pinfo *np = inet6_sk(sk); 5871da177e4SLinus Torvalds struct ipv6hdr *iph; 5881da177e4SLinus Torvalds struct sk_buff *skb; 5891da177e4SLinus Torvalds unsigned int hh_len; 5901da177e4SLinus Torvalds int err; 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds if (length > rt->u.dst.dev->mtu) { 5931da177e4SLinus Torvalds ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu); 5941da177e4SLinus Torvalds return -EMSGSIZE; 5951da177e4SLinus Torvalds } 5961da177e4SLinus Torvalds if (flags&MSG_PROBE) 5971da177e4SLinus Torvalds goto out; 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds hh_len = LL_RESERVED_SPACE(rt->u.dst.dev); 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds skb = sock_alloc_send_skb(sk, length+hh_len+15, 6021da177e4SLinus Torvalds flags&MSG_DONTWAIT, &err); 6031da177e4SLinus Torvalds if (skb == NULL) 6041da177e4SLinus Torvalds goto error; 6051da177e4SLinus Torvalds skb_reserve(skb, hh_len); 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds skb->priority = sk->sk_priority; 6081da177e4SLinus Torvalds skb->dst = dst_clone(&rt->u.dst); 6091da177e4SLinus Torvalds 6101ced98e8SArnaldo Carvalho de Melo skb_put(skb, length); 6111ced98e8SArnaldo Carvalho de Melo skb_reset_network_header(skb); 6120660e03fSArnaldo Carvalho de Melo iph = ipv6_hdr(skb); 6131da177e4SLinus Torvalds 6141da177e4SLinus Torvalds skb->ip_summed = CHECKSUM_NONE; 6151da177e4SLinus Torvalds 616b0e380b1SArnaldo Carvalho de Melo skb->transport_header = skb->network_header; 6171da177e4SLinus Torvalds err = memcpy_fromiovecend((void *)iph, from, 0, length); 6181da177e4SLinus Torvalds if (err) 6191da177e4SLinus Torvalds goto error_fault; 6201da177e4SLinus Torvalds 621a11d206dSYOSHIFUJI Hideaki IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS); 6226e23ae2aSPatrick McHardy err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev, 6231da177e4SLinus Torvalds dst_output); 6241da177e4SLinus Torvalds if (err > 0) 6253320da89SHerbert Xu err = np->recverr ? net_xmit_errno(err) : 0; 6261da177e4SLinus Torvalds if (err) 6271da177e4SLinus Torvalds goto error; 6281da177e4SLinus Torvalds out: 6291da177e4SLinus Torvalds return 0; 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds error_fault: 6321da177e4SLinus Torvalds err = -EFAULT; 6331da177e4SLinus Torvalds kfree_skb(skb); 6341da177e4SLinus Torvalds error: 635a11d206dSYOSHIFUJI Hideaki IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS); 6361da177e4SLinus Torvalds return err; 6371da177e4SLinus Torvalds } 6381da177e4SLinus Torvalds 639a27b58feSHeiko Carstens static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) 6401da177e4SLinus Torvalds { 6411da177e4SLinus Torvalds struct iovec *iov; 6421da177e4SLinus Torvalds u8 __user *type = NULL; 6431da177e4SLinus Torvalds u8 __user *code = NULL; 6446e8f4d48SMasahide NAKAMURA u8 len = 0; 6451da177e4SLinus Torvalds int probed = 0; 6461da177e4SLinus Torvalds int i; 6471da177e4SLinus Torvalds 6481da177e4SLinus Torvalds if (!msg->msg_iov) 649a27b58feSHeiko Carstens return 0; 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds for (i = 0; i < msg->msg_iovlen; i++) { 6521da177e4SLinus Torvalds iov = &msg->msg_iov[i]; 6531da177e4SLinus Torvalds if (!iov) 6541da177e4SLinus Torvalds continue; 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds switch (fl->proto) { 6571da177e4SLinus Torvalds case IPPROTO_ICMPV6: 6581da177e4SLinus Torvalds /* check if one-byte field is readable or not. */ 6591da177e4SLinus Torvalds if (iov->iov_base && iov->iov_len < 1) 6601da177e4SLinus Torvalds break; 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds if (!type) { 6631da177e4SLinus Torvalds type = iov->iov_base; 6641da177e4SLinus Torvalds /* check if code field is readable or not. */ 6651da177e4SLinus Torvalds if (iov->iov_len > 1) 6661da177e4SLinus Torvalds code = type + 1; 6671da177e4SLinus Torvalds } else if (!code) 6681da177e4SLinus Torvalds code = iov->iov_base; 6691da177e4SLinus Torvalds 6701da177e4SLinus Torvalds if (type && code) { 671a27b58feSHeiko Carstens if (get_user(fl->fl_icmp_type, type) || 672a27b58feSHeiko Carstens get_user(fl->fl_icmp_code, code)) 673a27b58feSHeiko Carstens return -EFAULT; 6741da177e4SLinus Torvalds probed = 1; 6751da177e4SLinus Torvalds } 6761da177e4SLinus Torvalds break; 6776e8f4d48SMasahide NAKAMURA case IPPROTO_MH: 6786e8f4d48SMasahide NAKAMURA if (iov->iov_base && iov->iov_len < 1) 6796e8f4d48SMasahide NAKAMURA break; 6806e8f4d48SMasahide NAKAMURA /* check if type field is readable or not. */ 6816e8f4d48SMasahide NAKAMURA if (iov->iov_len > 2 - len) { 6826e8f4d48SMasahide NAKAMURA u8 __user *p = iov->iov_base; 683a27b58feSHeiko Carstens if (get_user(fl->fl_mh_type, &p[2 - len])) 684a27b58feSHeiko Carstens return -EFAULT; 6856e8f4d48SMasahide NAKAMURA probed = 1; 6866e8f4d48SMasahide NAKAMURA } else 6876e8f4d48SMasahide NAKAMURA len += iov->iov_len; 6886e8f4d48SMasahide NAKAMURA 6896e8f4d48SMasahide NAKAMURA break; 6901da177e4SLinus Torvalds default: 6911da177e4SLinus Torvalds probed = 1; 6921da177e4SLinus Torvalds break; 6931da177e4SLinus Torvalds } 6941da177e4SLinus Torvalds if (probed) 6951da177e4SLinus Torvalds break; 6961da177e4SLinus Torvalds } 697a27b58feSHeiko Carstens return 0; 6981da177e4SLinus Torvalds } 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, 7011da177e4SLinus Torvalds struct msghdr *msg, size_t len) 7021da177e4SLinus Torvalds { 7031da177e4SLinus Torvalds struct ipv6_txoptions opt_space; 7041da177e4SLinus Torvalds struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name; 7051da177e4SLinus Torvalds struct in6_addr *daddr, *final_p = NULL, final; 7061da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 7071da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 7081da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 7091da177e4SLinus Torvalds struct ipv6_txoptions *opt = NULL; 7101da177e4SLinus Torvalds struct ip6_flowlabel *flowlabel = NULL; 7111da177e4SLinus Torvalds struct dst_entry *dst = NULL; 7121da177e4SLinus Torvalds struct flowi fl; 7131da177e4SLinus Torvalds int addr_len = msg->msg_namelen; 7141da177e4SLinus Torvalds int hlimit = -1; 71541a1f8eaSYOSHIFUJI Hideaki int tclass = -1; 7161da177e4SLinus Torvalds u16 proto; 7171da177e4SLinus Torvalds int err; 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds /* Rough check on arithmetic overflow, 720b59e139bSYOSHIFUJI Hideaki better check is made in ip6_append_data(). 7211da177e4SLinus Torvalds */ 722b59e139bSYOSHIFUJI Hideaki if (len > INT_MAX) 7231da177e4SLinus Torvalds return -EMSGSIZE; 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds /* Mirror BSD error message compatibility */ 7261da177e4SLinus Torvalds if (msg->msg_flags & MSG_OOB) 7271da177e4SLinus Torvalds return -EOPNOTSUPP; 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds /* 7301da177e4SLinus Torvalds * Get and verify the address. 7311da177e4SLinus Torvalds */ 7321da177e4SLinus Torvalds memset(&fl, 0, sizeof(fl)); 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds if (sin6) { 7351da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 7361da177e4SLinus Torvalds return -EINVAL; 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds if (sin6->sin6_family && sin6->sin6_family != AF_INET6) 7391da177e4SLinus Torvalds return(-EAFNOSUPPORT); 7401da177e4SLinus Torvalds 7411da177e4SLinus Torvalds /* port is the proto value [0..255] carried in nexthdr */ 7421da177e4SLinus Torvalds proto = ntohs(sin6->sin6_port); 7431da177e4SLinus Torvalds 7441da177e4SLinus Torvalds if (!proto) 7451da177e4SLinus Torvalds proto = inet->num; 7461da177e4SLinus Torvalds else if (proto != inet->num) 7471da177e4SLinus Torvalds return(-EINVAL); 7481da177e4SLinus Torvalds 7491da177e4SLinus Torvalds if (proto > 255) 7501da177e4SLinus Torvalds return(-EINVAL); 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds daddr = &sin6->sin6_addr; 7531da177e4SLinus Torvalds if (np->sndflow) { 7541da177e4SLinus Torvalds fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK; 7551da177e4SLinus Torvalds if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) { 7561da177e4SLinus Torvalds flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); 7571da177e4SLinus Torvalds if (flowlabel == NULL) 7581da177e4SLinus Torvalds return -EINVAL; 7591da177e4SLinus Torvalds daddr = &flowlabel->dst; 7601da177e4SLinus Torvalds } 7611da177e4SLinus Torvalds } 7621da177e4SLinus Torvalds 7631da177e4SLinus Torvalds /* 7641da177e4SLinus Torvalds * Otherwise it will be difficult to maintain 7651da177e4SLinus Torvalds * sk->sk_dst_cache. 7661da177e4SLinus Torvalds */ 7671da177e4SLinus Torvalds if (sk->sk_state == TCP_ESTABLISHED && 7681da177e4SLinus Torvalds ipv6_addr_equal(daddr, &np->daddr)) 7691da177e4SLinus Torvalds daddr = &np->daddr; 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 7721da177e4SLinus Torvalds sin6->sin6_scope_id && 7731da177e4SLinus Torvalds ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL) 7741da177e4SLinus Torvalds fl.oif = sin6->sin6_scope_id; 7751da177e4SLinus Torvalds } else { 7761da177e4SLinus Torvalds if (sk->sk_state != TCP_ESTABLISHED) 7771da177e4SLinus Torvalds return -EDESTADDRREQ; 7781da177e4SLinus Torvalds 7791da177e4SLinus Torvalds proto = inet->num; 7801da177e4SLinus Torvalds daddr = &np->daddr; 7811da177e4SLinus Torvalds fl.fl6_flowlabel = np->flow_label; 7821da177e4SLinus Torvalds } 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds if (ipv6_addr_any(daddr)) { 7851da177e4SLinus Torvalds /* 7861da177e4SLinus Torvalds * unspecified destination address 7871da177e4SLinus Torvalds * treated as error... is this correct ? 7881da177e4SLinus Torvalds */ 7891da177e4SLinus Torvalds fl6_sock_release(flowlabel); 7901da177e4SLinus Torvalds return(-EINVAL); 7911da177e4SLinus Torvalds } 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvalds if (fl.oif == 0) 7941da177e4SLinus Torvalds fl.oif = sk->sk_bound_dev_if; 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds if (msg->msg_controllen) { 7971da177e4SLinus Torvalds opt = &opt_space; 7981da177e4SLinus Torvalds memset(opt, 0, sizeof(struct ipv6_txoptions)); 7991da177e4SLinus Torvalds opt->tot_len = sizeof(struct ipv6_txoptions); 8001da177e4SLinus Torvalds 80141a1f8eaSYOSHIFUJI Hideaki err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass); 8021da177e4SLinus Torvalds if (err < 0) { 8031da177e4SLinus Torvalds fl6_sock_release(flowlabel); 8041da177e4SLinus Torvalds return err; 8051da177e4SLinus Torvalds } 8061da177e4SLinus Torvalds if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) { 8071da177e4SLinus Torvalds flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); 8081da177e4SLinus Torvalds if (flowlabel == NULL) 8091da177e4SLinus Torvalds return -EINVAL; 8101da177e4SLinus Torvalds } 8111da177e4SLinus Torvalds if (!(opt->opt_nflen|opt->opt_flen)) 8121da177e4SLinus Torvalds opt = NULL; 8131da177e4SLinus Torvalds } 8141da177e4SLinus Torvalds if (opt == NULL) 8151da177e4SLinus Torvalds opt = np->opt; 816df9890c3SYOSHIFUJI Hideaki if (flowlabel) 8171da177e4SLinus Torvalds opt = fl6_merge_options(&opt_space, flowlabel, opt); 818df9890c3SYOSHIFUJI Hideaki opt = ipv6_fixup_options(&opt_space, opt); 8191da177e4SLinus Torvalds 8201da177e4SLinus Torvalds fl.proto = proto; 821a27b58feSHeiko Carstens err = rawv6_probe_proto_opt(&fl, msg); 822a27b58feSHeiko Carstens if (err) 823a27b58feSHeiko Carstens goto out; 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, daddr); 8261da177e4SLinus Torvalds if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr)) 8271da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_src, &np->saddr); 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds /* merge ip6_build_xmit from ip6_output */ 8301da177e4SLinus Torvalds if (opt && opt->srcrt) { 8311da177e4SLinus Torvalds struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt; 8321da177e4SLinus Torvalds ipv6_addr_copy(&final, &fl.fl6_dst); 8331da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, rt0->addr); 8341da177e4SLinus Torvalds final_p = &final; 8351da177e4SLinus Torvalds } 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) 8381da177e4SLinus Torvalds fl.oif = np->mcast_oif; 839beb8d13bSVenkat Yekkirala security_sk_classify_flow(sk, &fl); 8401da177e4SLinus Torvalds 8411da177e4SLinus Torvalds err = ip6_dst_lookup(sk, &dst, &fl); 8421da177e4SLinus Torvalds if (err) 8431da177e4SLinus Torvalds goto out; 8441da177e4SLinus Torvalds if (final_p) 8451da177e4SLinus Torvalds ipv6_addr_copy(&fl.fl6_dst, final_p); 8461da177e4SLinus Torvalds 84714e50e57SDavid S. Miller if ((err = __xfrm_lookup(&dst, &fl, sk, 1)) < 0) { 84814e50e57SDavid S. Miller if (err == -EREMOTE) 84914e50e57SDavid S. Miller err = ip6_dst_blackhole(sk, &dst, &fl); 85014e50e57SDavid S. Miller if (err < 0) 8511da177e4SLinus Torvalds goto out; 85214e50e57SDavid S. Miller } 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds if (hlimit < 0) { 8551da177e4SLinus Torvalds if (ipv6_addr_is_multicast(&fl.fl6_dst)) 8561da177e4SLinus Torvalds hlimit = np->mcast_hops; 8571da177e4SLinus Torvalds else 8581da177e4SLinus Torvalds hlimit = np->hop_limit; 8591da177e4SLinus Torvalds if (hlimit < 0) 8601da177e4SLinus Torvalds hlimit = dst_metric(dst, RTAX_HOPLIMIT); 8611da177e4SLinus Torvalds if (hlimit < 0) 8621da177e4SLinus Torvalds hlimit = ipv6_get_hoplimit(dst->dev); 8631da177e4SLinus Torvalds } 8641da177e4SLinus Torvalds 86541a1f8eaSYOSHIFUJI Hideaki if (tclass < 0) { 866e012d51cSYOSHIFUJI Hideaki tclass = np->tclass; 86741a1f8eaSYOSHIFUJI Hideaki if (tclass < 0) 86841a1f8eaSYOSHIFUJI Hideaki tclass = 0; 86941a1f8eaSYOSHIFUJI Hideaki } 87041a1f8eaSYOSHIFUJI Hideaki 8711da177e4SLinus Torvalds if (msg->msg_flags&MSG_CONFIRM) 8721da177e4SLinus Torvalds goto do_confirm; 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvalds back_from_confirm: 8751da177e4SLinus Torvalds if (inet->hdrincl) { 8761da177e4SLinus Torvalds err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags); 8771da177e4SLinus Torvalds } else { 8781da177e4SLinus Torvalds lock_sock(sk); 87941a1f8eaSYOSHIFUJI Hideaki err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, 88041a1f8eaSYOSHIFUJI Hideaki len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst, 88141a1f8eaSYOSHIFUJI Hideaki msg->msg_flags); 8821da177e4SLinus Torvalds 8831da177e4SLinus Torvalds if (err) 8841da177e4SLinus Torvalds ip6_flush_pending_frames(sk); 8851da177e4SLinus Torvalds else if (!(msg->msg_flags & MSG_MORE)) 886357b40a1SHerbert Xu err = rawv6_push_pending_frames(sk, &fl, rp); 8873ef9d943SYOSHIFUJI Hideaki release_sock(sk); 8881da177e4SLinus Torvalds } 8891da177e4SLinus Torvalds done: 8906d3e85ecSNicolas DICHTEL dst_release(dst); 8911da177e4SLinus Torvalds out: 8921da177e4SLinus Torvalds fl6_sock_release(flowlabel); 8931da177e4SLinus Torvalds return err<0?err:len; 8941da177e4SLinus Torvalds do_confirm: 8951da177e4SLinus Torvalds dst_confirm(dst); 8961da177e4SLinus Torvalds if (!(msg->msg_flags & MSG_PROBE) || len) 8971da177e4SLinus Torvalds goto back_from_confirm; 8981da177e4SLinus Torvalds err = 0; 8991da177e4SLinus Torvalds goto done; 9001da177e4SLinus Torvalds } 9011da177e4SLinus Torvalds 9021da177e4SLinus Torvalds static int rawv6_seticmpfilter(struct sock *sk, int level, int optname, 9031da177e4SLinus Torvalds char __user *optval, int optlen) 9041da177e4SLinus Torvalds { 9051da177e4SLinus Torvalds switch (optname) { 9061da177e4SLinus Torvalds case ICMPV6_FILTER: 9071da177e4SLinus Torvalds if (optlen > sizeof(struct icmp6_filter)) 9081da177e4SLinus Torvalds optlen = sizeof(struct icmp6_filter); 9091da177e4SLinus Torvalds if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen)) 9101da177e4SLinus Torvalds return -EFAULT; 9111da177e4SLinus Torvalds return 0; 9121da177e4SLinus Torvalds default: 9131da177e4SLinus Torvalds return -ENOPROTOOPT; 9143ff50b79SStephen Hemminger } 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds return 0; 9171da177e4SLinus Torvalds } 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds static int rawv6_geticmpfilter(struct sock *sk, int level, int optname, 9201da177e4SLinus Torvalds char __user *optval, int __user *optlen) 9211da177e4SLinus Torvalds { 9221da177e4SLinus Torvalds int len; 9231da177e4SLinus Torvalds 9241da177e4SLinus Torvalds switch (optname) { 9251da177e4SLinus Torvalds case ICMPV6_FILTER: 9261da177e4SLinus Torvalds if (get_user(len, optlen)) 9271da177e4SLinus Torvalds return -EFAULT; 9281da177e4SLinus Torvalds if (len < 0) 9291da177e4SLinus Torvalds return -EINVAL; 9301da177e4SLinus Torvalds if (len > sizeof(struct icmp6_filter)) 9311da177e4SLinus Torvalds len = sizeof(struct icmp6_filter); 9321da177e4SLinus Torvalds if (put_user(len, optlen)) 9331da177e4SLinus Torvalds return -EFAULT; 9341da177e4SLinus Torvalds if (copy_to_user(optval, &raw6_sk(sk)->filter, len)) 9351da177e4SLinus Torvalds return -EFAULT; 9361da177e4SLinus Torvalds return 0; 9371da177e4SLinus Torvalds default: 9381da177e4SLinus Torvalds return -ENOPROTOOPT; 9393ff50b79SStephen Hemminger } 9401da177e4SLinus Torvalds 9411da177e4SLinus Torvalds return 0; 9421da177e4SLinus Torvalds } 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds 9453fdadf7dSDmitry Mishin static int do_rawv6_setsockopt(struct sock *sk, int level, int optname, 9461da177e4SLinus Torvalds char __user *optval, int optlen) 9471da177e4SLinus Torvalds { 9481da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 9491da177e4SLinus Torvalds int val; 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds if (get_user(val, (int __user *)optval)) 9521da177e4SLinus Torvalds return -EFAULT; 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvalds switch (optname) { 9551da177e4SLinus Torvalds case IPV6_CHECKSUM: 9561da177e4SLinus Torvalds /* You may get strange result with a positive odd offset; 9571da177e4SLinus Torvalds RFC2292bis agrees with me. */ 9581da177e4SLinus Torvalds if (val > 0 && (val&1)) 9591da177e4SLinus Torvalds return(-EINVAL); 9601da177e4SLinus Torvalds if (val < 0) { 9611da177e4SLinus Torvalds rp->checksum = 0; 9621da177e4SLinus Torvalds } else { 9631da177e4SLinus Torvalds rp->checksum = 1; 9641da177e4SLinus Torvalds rp->offset = val; 9651da177e4SLinus Torvalds } 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds return 0; 9681da177e4SLinus Torvalds break; 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds default: 9711da177e4SLinus Torvalds return(-ENOPROTOOPT); 9721da177e4SLinus Torvalds } 9731da177e4SLinus Torvalds } 9741da177e4SLinus Torvalds 9753fdadf7dSDmitry Mishin static int rawv6_setsockopt(struct sock *sk, int level, int optname, 9763fdadf7dSDmitry Mishin char __user *optval, int optlen) 9771da177e4SLinus Torvalds { 9781da177e4SLinus Torvalds switch(level) { 9791da177e4SLinus Torvalds case SOL_RAW: 9801da177e4SLinus Torvalds break; 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds case SOL_ICMPV6: 9831da177e4SLinus Torvalds if (inet_sk(sk)->num != IPPROTO_ICMPV6) 9841da177e4SLinus Torvalds return -EOPNOTSUPP; 9853fdadf7dSDmitry Mishin return rawv6_seticmpfilter(sk, level, optname, optval, 9861da177e4SLinus Torvalds optlen); 9871da177e4SLinus Torvalds case SOL_IPV6: 9881da177e4SLinus Torvalds if (optname == IPV6_CHECKSUM) 9891da177e4SLinus Torvalds break; 9901da177e4SLinus Torvalds default: 9913fdadf7dSDmitry Mishin return ipv6_setsockopt(sk, level, optname, optval, 9921da177e4SLinus Torvalds optlen); 9933ff50b79SStephen Hemminger } 9943ff50b79SStephen Hemminger 9953fdadf7dSDmitry Mishin return do_rawv6_setsockopt(sk, level, optname, optval, optlen); 9963fdadf7dSDmitry Mishin } 9973fdadf7dSDmitry Mishin 9983fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 9993fdadf7dSDmitry Mishin static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname, 10003fdadf7dSDmitry Mishin char __user *optval, int optlen) 10013fdadf7dSDmitry Mishin { 10023fdadf7dSDmitry Mishin switch (level) { 10033fdadf7dSDmitry Mishin case SOL_RAW: 10043fdadf7dSDmitry Mishin break; 10053fdadf7dSDmitry Mishin case SOL_ICMPV6: 10063fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10073fdadf7dSDmitry Mishin return -EOPNOTSUPP; 1008543d9cfeSArnaldo Carvalho de Melo return rawv6_seticmpfilter(sk, level, optname, optval, optlen); 10093fdadf7dSDmitry Mishin case SOL_IPV6: 10103fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 10113fdadf7dSDmitry Mishin break; 10123fdadf7dSDmitry Mishin default: 1013543d9cfeSArnaldo Carvalho de Melo return compat_ipv6_setsockopt(sk, level, optname, 1014543d9cfeSArnaldo Carvalho de Melo optval, optlen); 10153ff50b79SStephen Hemminger } 10163fdadf7dSDmitry Mishin return do_rawv6_setsockopt(sk, level, optname, optval, optlen); 10173fdadf7dSDmitry Mishin } 10183fdadf7dSDmitry Mishin #endif 10193fdadf7dSDmitry Mishin 10203fdadf7dSDmitry Mishin static int do_rawv6_getsockopt(struct sock *sk, int level, int optname, 10213fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 10223fdadf7dSDmitry Mishin { 10233fdadf7dSDmitry Mishin struct raw6_sock *rp = raw6_sk(sk); 10243fdadf7dSDmitry Mishin int val, len; 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds if (get_user(len,optlen)) 10271da177e4SLinus Torvalds return -EFAULT; 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds switch (optname) { 10301da177e4SLinus Torvalds case IPV6_CHECKSUM: 10311da177e4SLinus Torvalds if (rp->checksum == 0) 10321da177e4SLinus Torvalds val = -1; 10331da177e4SLinus Torvalds else 10341da177e4SLinus Torvalds val = rp->offset; 10351da177e4SLinus Torvalds break; 10361da177e4SLinus Torvalds 10371da177e4SLinus Torvalds default: 10381da177e4SLinus Torvalds return -ENOPROTOOPT; 10391da177e4SLinus Torvalds } 10401da177e4SLinus Torvalds 10411da177e4SLinus Torvalds len = min_t(unsigned int, sizeof(int), len); 10421da177e4SLinus Torvalds 10431da177e4SLinus Torvalds if (put_user(len, optlen)) 10441da177e4SLinus Torvalds return -EFAULT; 10451da177e4SLinus Torvalds if (copy_to_user(optval,&val,len)) 10461da177e4SLinus Torvalds return -EFAULT; 10471da177e4SLinus Torvalds return 0; 10481da177e4SLinus Torvalds } 10491da177e4SLinus Torvalds 10503fdadf7dSDmitry Mishin static int rawv6_getsockopt(struct sock *sk, int level, int optname, 10513fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 10523fdadf7dSDmitry Mishin { 10533fdadf7dSDmitry Mishin switch(level) { 10543fdadf7dSDmitry Mishin case SOL_RAW: 10553fdadf7dSDmitry Mishin break; 10563fdadf7dSDmitry Mishin 10573fdadf7dSDmitry Mishin case SOL_ICMPV6: 10583fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10593fdadf7dSDmitry Mishin return -EOPNOTSUPP; 10603fdadf7dSDmitry Mishin return rawv6_geticmpfilter(sk, level, optname, optval, 10613fdadf7dSDmitry Mishin optlen); 10623fdadf7dSDmitry Mishin case SOL_IPV6: 10633fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 10643fdadf7dSDmitry Mishin break; 10653fdadf7dSDmitry Mishin default: 10663fdadf7dSDmitry Mishin return ipv6_getsockopt(sk, level, optname, optval, 10673fdadf7dSDmitry Mishin optlen); 10683ff50b79SStephen Hemminger } 10693ff50b79SStephen Hemminger 10703fdadf7dSDmitry Mishin return do_rawv6_getsockopt(sk, level, optname, optval, optlen); 10713fdadf7dSDmitry Mishin } 10723fdadf7dSDmitry Mishin 10733fdadf7dSDmitry Mishin #ifdef CONFIG_COMPAT 10743fdadf7dSDmitry Mishin static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname, 10753fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 10763fdadf7dSDmitry Mishin { 10773fdadf7dSDmitry Mishin switch (level) { 10783fdadf7dSDmitry Mishin case SOL_RAW: 10793fdadf7dSDmitry Mishin break; 10803fdadf7dSDmitry Mishin case SOL_ICMPV6: 10813fdadf7dSDmitry Mishin if (inet_sk(sk)->num != IPPROTO_ICMPV6) 10823fdadf7dSDmitry Mishin return -EOPNOTSUPP; 1083543d9cfeSArnaldo Carvalho de Melo return rawv6_geticmpfilter(sk, level, optname, optval, optlen); 10843fdadf7dSDmitry Mishin case SOL_IPV6: 10853fdadf7dSDmitry Mishin if (optname == IPV6_CHECKSUM) 10863fdadf7dSDmitry Mishin break; 10873fdadf7dSDmitry Mishin default: 1088543d9cfeSArnaldo Carvalho de Melo return compat_ipv6_getsockopt(sk, level, optname, 1089543d9cfeSArnaldo Carvalho de Melo optval, optlen); 10903ff50b79SStephen Hemminger } 10913fdadf7dSDmitry Mishin return do_rawv6_getsockopt(sk, level, optname, optval, optlen); 10923fdadf7dSDmitry Mishin } 10933fdadf7dSDmitry Mishin #endif 10943fdadf7dSDmitry Mishin 10951da177e4SLinus Torvalds static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg) 10961da177e4SLinus Torvalds { 10971da177e4SLinus Torvalds switch(cmd) { 10981da177e4SLinus Torvalds case SIOCOUTQ: 10991da177e4SLinus Torvalds { 11001da177e4SLinus Torvalds int amount = atomic_read(&sk->sk_wmem_alloc); 11011da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 11021da177e4SLinus Torvalds } 11031da177e4SLinus Torvalds case SIOCINQ: 11041da177e4SLinus Torvalds { 11051da177e4SLinus Torvalds struct sk_buff *skb; 11061da177e4SLinus Torvalds int amount = 0; 11071da177e4SLinus Torvalds 1108e0f9f858SHerbert Xu spin_lock_bh(&sk->sk_receive_queue.lock); 11091da177e4SLinus Torvalds skb = skb_peek(&sk->sk_receive_queue); 11101da177e4SLinus Torvalds if (skb != NULL) 111127a884dcSArnaldo Carvalho de Melo amount = skb->tail - skb->transport_header; 1112e0f9f858SHerbert Xu spin_unlock_bh(&sk->sk_receive_queue.lock); 11131da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 11141da177e4SLinus Torvalds } 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds default: 11171da177e4SLinus Torvalds return -ENOIOCTLCMD; 11181da177e4SLinus Torvalds } 11191da177e4SLinus Torvalds } 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvalds static void rawv6_close(struct sock *sk, long timeout) 11221da177e4SLinus Torvalds { 11231da177e4SLinus Torvalds if (inet_sk(sk)->num == IPPROTO_RAW) 11241da177e4SLinus Torvalds ip6_ra_control(sk, -1, NULL); 11251da177e4SLinus Torvalds 11261da177e4SLinus Torvalds sk_common_release(sk); 11271da177e4SLinus Torvalds } 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvalds static int rawv6_init_sk(struct sock *sk) 11301da177e4SLinus Torvalds { 11311da177e4SLinus Torvalds struct raw6_sock *rp = raw6_sk(sk); 1132f48d5ff1SMasahide NAKAMURA 1133f48d5ff1SMasahide NAKAMURA switch (inet_sk(sk)->num) { 1134f48d5ff1SMasahide NAKAMURA case IPPROTO_ICMPV6: 11351da177e4SLinus Torvalds rp->checksum = 1; 11361da177e4SLinus Torvalds rp->offset = 2; 1137f48d5ff1SMasahide NAKAMURA break; 1138f48d5ff1SMasahide NAKAMURA case IPPROTO_MH: 1139f48d5ff1SMasahide NAKAMURA rp->checksum = 1; 1140f48d5ff1SMasahide NAKAMURA rp->offset = 4; 1141f48d5ff1SMasahide NAKAMURA break; 1142f48d5ff1SMasahide NAKAMURA default: 1143f48d5ff1SMasahide NAKAMURA break; 11441da177e4SLinus Torvalds } 11451da177e4SLinus Torvalds return(0); 11461da177e4SLinus Torvalds } 11471da177e4SLinus Torvalds 1148c5a432f1SEric Dumazet DEFINE_PROTO_INUSE(rawv6) 1149c5a432f1SEric Dumazet 11501da177e4SLinus Torvalds struct proto rawv6_prot = { 11511da177e4SLinus Torvalds .name = "RAWv6", 11521da177e4SLinus Torvalds .owner = THIS_MODULE, 11531da177e4SLinus Torvalds .close = rawv6_close, 11541da177e4SLinus Torvalds .connect = ip6_datagram_connect, 11551da177e4SLinus Torvalds .disconnect = udp_disconnect, 11561da177e4SLinus Torvalds .ioctl = rawv6_ioctl, 11571da177e4SLinus Torvalds .init = rawv6_init_sk, 11581da177e4SLinus Torvalds .destroy = inet6_destroy_sock, 11591da177e4SLinus Torvalds .setsockopt = rawv6_setsockopt, 11601da177e4SLinus Torvalds .getsockopt = rawv6_getsockopt, 11611da177e4SLinus Torvalds .sendmsg = rawv6_sendmsg, 11621da177e4SLinus Torvalds .recvmsg = rawv6_recvmsg, 11631da177e4SLinus Torvalds .bind = rawv6_bind, 11641da177e4SLinus Torvalds .backlog_rcv = rawv6_rcv_skb, 11651da177e4SLinus Torvalds .hash = raw_v6_hash, 11661da177e4SLinus Torvalds .unhash = raw_v6_unhash, 11671da177e4SLinus Torvalds .obj_size = sizeof(struct raw6_sock), 1168543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 1169543d9cfeSArnaldo Carvalho de Melo .compat_setsockopt = compat_rawv6_setsockopt, 1170543d9cfeSArnaldo Carvalho de Melo .compat_getsockopt = compat_rawv6_getsockopt, 1171543d9cfeSArnaldo Carvalho de Melo #endif 1172c5a432f1SEric Dumazet REF_PROTO_INUSE(rawv6) 11731da177e4SLinus Torvalds }; 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 11761da177e4SLinus Torvalds struct raw6_iter_state { 11771da177e4SLinus Torvalds int bucket; 11781da177e4SLinus Torvalds }; 11791da177e4SLinus Torvalds 11801da177e4SLinus Torvalds #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private) 11811da177e4SLinus Torvalds 11821da177e4SLinus Torvalds static struct sock *raw6_get_first(struct seq_file *seq) 11831da177e4SLinus Torvalds { 11841da177e4SLinus Torvalds struct sock *sk; 11851da177e4SLinus Torvalds struct hlist_node *node; 11861da177e4SLinus Torvalds struct raw6_iter_state* state = raw6_seq_private(seq); 11871da177e4SLinus Torvalds 11881da177e4SLinus Torvalds for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket) 11891da177e4SLinus Torvalds sk_for_each(sk, node, &raw_v6_htable[state->bucket]) 11901da177e4SLinus Torvalds if (sk->sk_family == PF_INET6) 11911da177e4SLinus Torvalds goto out; 11921da177e4SLinus Torvalds sk = NULL; 11931da177e4SLinus Torvalds out: 11941da177e4SLinus Torvalds return sk; 11951da177e4SLinus Torvalds } 11961da177e4SLinus Torvalds 11971da177e4SLinus Torvalds static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk) 11981da177e4SLinus Torvalds { 11991da177e4SLinus Torvalds struct raw6_iter_state* state = raw6_seq_private(seq); 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds do { 12021da177e4SLinus Torvalds sk = sk_next(sk); 12031da177e4SLinus Torvalds try_again: 12041da177e4SLinus Torvalds ; 12051da177e4SLinus Torvalds } while (sk && sk->sk_family != PF_INET6); 12061da177e4SLinus Torvalds 12071da177e4SLinus Torvalds if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) { 12081da177e4SLinus Torvalds sk = sk_head(&raw_v6_htable[state->bucket]); 12091da177e4SLinus Torvalds goto try_again; 12101da177e4SLinus Torvalds } 12111da177e4SLinus Torvalds return sk; 12121da177e4SLinus Torvalds } 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos) 12151da177e4SLinus Torvalds { 12161da177e4SLinus Torvalds struct sock *sk = raw6_get_first(seq); 12171da177e4SLinus Torvalds if (sk) 12181da177e4SLinus Torvalds while (pos && (sk = raw6_get_next(seq, sk)) != NULL) 12191da177e4SLinus Torvalds --pos; 12201da177e4SLinus Torvalds return pos ? NULL : sk; 12211da177e4SLinus Torvalds } 12221da177e4SLinus Torvalds 12231da177e4SLinus Torvalds static void *raw6_seq_start(struct seq_file *seq, loff_t *pos) 12241da177e4SLinus Torvalds { 12251da177e4SLinus Torvalds read_lock(&raw_v6_lock); 12261da177e4SLinus Torvalds return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; 12271da177e4SLinus Torvalds } 12281da177e4SLinus Torvalds 12291da177e4SLinus Torvalds static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos) 12301da177e4SLinus Torvalds { 12311da177e4SLinus Torvalds struct sock *sk; 12321da177e4SLinus Torvalds 12331da177e4SLinus Torvalds if (v == SEQ_START_TOKEN) 12341da177e4SLinus Torvalds sk = raw6_get_first(seq); 12351da177e4SLinus Torvalds else 12361da177e4SLinus Torvalds sk = raw6_get_next(seq, v); 12371da177e4SLinus Torvalds ++*pos; 12381da177e4SLinus Torvalds return sk; 12391da177e4SLinus Torvalds } 12401da177e4SLinus Torvalds 12411da177e4SLinus Torvalds static void raw6_seq_stop(struct seq_file *seq, void *v) 12421da177e4SLinus Torvalds { 12431da177e4SLinus Torvalds read_unlock(&raw_v6_lock); 12441da177e4SLinus Torvalds } 12451da177e4SLinus Torvalds 12461da177e4SLinus Torvalds static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) 12471da177e4SLinus Torvalds { 12481da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sp); 12491da177e4SLinus Torvalds struct in6_addr *dest, *src; 12501da177e4SLinus Torvalds __u16 destp, srcp; 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds dest = &np->daddr; 12531da177e4SLinus Torvalds src = &np->rcv_saddr; 12541da177e4SLinus Torvalds destp = 0; 12551da177e4SLinus Torvalds srcp = inet_sk(sp)->num; 12561da177e4SLinus Torvalds seq_printf(seq, 12571da177e4SLinus Torvalds "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " 1258a92aa318SWang Chen "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n", 12591da177e4SLinus Torvalds i, 12601da177e4SLinus Torvalds src->s6_addr32[0], src->s6_addr32[1], 12611da177e4SLinus Torvalds src->s6_addr32[2], src->s6_addr32[3], srcp, 12621da177e4SLinus Torvalds dest->s6_addr32[0], dest->s6_addr32[1], 12631da177e4SLinus Torvalds dest->s6_addr32[2], dest->s6_addr32[3], destp, 12641da177e4SLinus Torvalds sp->sk_state, 12651da177e4SLinus Torvalds atomic_read(&sp->sk_wmem_alloc), 12661da177e4SLinus Torvalds atomic_read(&sp->sk_rmem_alloc), 12671da177e4SLinus Torvalds 0, 0L, 0, 12681da177e4SLinus Torvalds sock_i_uid(sp), 0, 12691da177e4SLinus Torvalds sock_i_ino(sp), 1270a92aa318SWang Chen atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); 12711da177e4SLinus Torvalds } 12721da177e4SLinus Torvalds 12731da177e4SLinus Torvalds static int raw6_seq_show(struct seq_file *seq, void *v) 12741da177e4SLinus Torvalds { 12751da177e4SLinus Torvalds if (v == SEQ_START_TOKEN) 12761da177e4SLinus Torvalds seq_printf(seq, 12771da177e4SLinus Torvalds " sl " 12781da177e4SLinus Torvalds "local_address " 12791da177e4SLinus Torvalds "remote_address " 12801da177e4SLinus Torvalds "st tx_queue rx_queue tr tm->when retrnsmt" 1281a92aa318SWang Chen " uid timeout inode drops\n"); 12821da177e4SLinus Torvalds else 12831da177e4SLinus Torvalds raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket); 12841da177e4SLinus Torvalds return 0; 12851da177e4SLinus Torvalds } 12861da177e4SLinus Torvalds 128756b3d975SPhilippe De Muyter static const struct seq_operations raw6_seq_ops = { 12881da177e4SLinus Torvalds .start = raw6_seq_start, 12891da177e4SLinus Torvalds .next = raw6_seq_next, 12901da177e4SLinus Torvalds .stop = raw6_seq_stop, 12911da177e4SLinus Torvalds .show = raw6_seq_show, 12921da177e4SLinus Torvalds }; 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds static int raw6_seq_open(struct inode *inode, struct file *file) 12951da177e4SLinus Torvalds { 1296cf7732e4SPavel Emelyanov return seq_open_private(file, &raw6_seq_ops, 1297cf7732e4SPavel Emelyanov sizeof(struct raw6_iter_state)); 12981da177e4SLinus Torvalds } 12991da177e4SLinus Torvalds 13009a32144eSArjan van de Ven static const struct file_operations raw6_seq_fops = { 13011da177e4SLinus Torvalds .owner = THIS_MODULE, 13021da177e4SLinus Torvalds .open = raw6_seq_open, 13031da177e4SLinus Torvalds .read = seq_read, 13041da177e4SLinus Torvalds .llseek = seq_lseek, 13051da177e4SLinus Torvalds .release = seq_release_private, 13061da177e4SLinus Torvalds }; 13071da177e4SLinus Torvalds 13081da177e4SLinus Torvalds int __init raw6_proc_init(void) 13091da177e4SLinus Torvalds { 1310457c4cbcSEric W. Biederman if (!proc_net_fops_create(&init_net, "raw6", S_IRUGO, &raw6_seq_fops)) 13111da177e4SLinus Torvalds return -ENOMEM; 13121da177e4SLinus Torvalds return 0; 13131da177e4SLinus Torvalds } 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds void raw6_proc_exit(void) 13161da177e4SLinus Torvalds { 1317457c4cbcSEric W. Biederman proc_net_remove(&init_net, "raw6"); 13181da177e4SLinus Torvalds } 13191da177e4SLinus Torvalds #endif /* CONFIG_PROC_FS */ 1320