12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * INET An implementation of the TCP/IP protocol suite for the LINUX 41da177e4SLinus Torvalds * operating system. INET is implemented using the BSD Socket 51da177e4SLinus Torvalds * interface as the means of communication with the user level. 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * RAW - implementation of IP "raw" sockets. 81da177e4SLinus Torvalds * 902c30a84SJesper Juhl * Authors: Ross Biro 101da177e4SLinus Torvalds * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Fixes: 131da177e4SLinus Torvalds * Alan Cox : verify_area() fixed up 141da177e4SLinus Torvalds * Alan Cox : ICMP error handling 151da177e4SLinus Torvalds * Alan Cox : EMSGSIZE if you send too big a packet 161da177e4SLinus Torvalds * Alan Cox : Now uses generic datagrams and shared 171da177e4SLinus Torvalds * skbuff library. No more peek crashes, 181da177e4SLinus Torvalds * no more backlogs 191da177e4SLinus Torvalds * Alan Cox : Checks sk->broadcast. 201da177e4SLinus Torvalds * Alan Cox : Uses skb_free_datagram/skb_copy_datagram 211da177e4SLinus Torvalds * Alan Cox : Raw passes ip options too 221da177e4SLinus Torvalds * Alan Cox : Setsocketopt added 231da177e4SLinus Torvalds * Alan Cox : Fixed error return for broadcasts 241da177e4SLinus Torvalds * Alan Cox : Removed wake_up calls 251da177e4SLinus Torvalds * Alan Cox : Use ttl/tos 261da177e4SLinus Torvalds * Alan Cox : Cleaned up old debugging 271da177e4SLinus Torvalds * Alan Cox : Use new kernel side addresses 281da177e4SLinus Torvalds * Arnt Gulbrandsen : Fixed MSG_DONTROUTE in raw sockets. 291da177e4SLinus Torvalds * Alan Cox : BSD style RAW socket demultiplexing. 301da177e4SLinus Torvalds * Alan Cox : Beginnings of mrouted support. 311da177e4SLinus Torvalds * Alan Cox : Added IP_HDRINCL option. 321da177e4SLinus Torvalds * Alan Cox : Skip broadcast check if BSDism set. 331da177e4SLinus Torvalds * David S. Miller : New socket lookup architecture. 341da177e4SLinus Torvalds */ 351da177e4SLinus Torvalds 36715b49efSAlan Cox #include <linux/types.h> 3760063497SArun Sharma #include <linux/atomic.h> 381da177e4SLinus Torvalds #include <asm/byteorder.h> 391da177e4SLinus Torvalds #include <asm/current.h> 407c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 411da177e4SLinus Torvalds #include <asm/ioctls.h> 421da177e4SLinus Torvalds #include <linux/stddef.h> 431da177e4SLinus Torvalds #include <linux/slab.h> 441da177e4SLinus Torvalds #include <linux/errno.h> 451da177e4SLinus Torvalds #include <linux/kernel.h> 46bc3b2d7fSPaul Gortmaker #include <linux/export.h> 471da177e4SLinus Torvalds #include <linux/spinlock.h> 481da177e4SLinus Torvalds #include <linux/sockios.h> 491da177e4SLinus Torvalds #include <linux/socket.h> 501da177e4SLinus Torvalds #include <linux/in.h> 511da177e4SLinus Torvalds #include <linux/mroute.h> 521da177e4SLinus Torvalds #include <linux/netdevice.h> 531da177e4SLinus Torvalds #include <linux/in_route.h> 541da177e4SLinus Torvalds #include <linux/route.h> 551da177e4SLinus Torvalds #include <linux/skbuff.h> 56f5220d63SQuentin Armitage #include <linux/igmp.h> 57457c4cbcSEric W. Biederman #include <net/net_namespace.h> 581da177e4SLinus Torvalds #include <net/dst.h> 591da177e4SLinus Torvalds #include <net/sock.h> 601da177e4SLinus Torvalds #include <linux/ip.h> 611da177e4SLinus Torvalds #include <linux/net.h> 621da177e4SLinus Torvalds #include <net/ip.h> 631da177e4SLinus Torvalds #include <net/icmp.h> 641da177e4SLinus Torvalds #include <net/udp.h> 651da177e4SLinus Torvalds #include <net/raw.h> 661da177e4SLinus Torvalds #include <net/snmp.h> 67c752f073SArnaldo Carvalho de Melo #include <net/tcp_states.h> 681da177e4SLinus Torvalds #include <net/inet_common.h> 691da177e4SLinus Torvalds #include <net/checksum.h> 701da177e4SLinus Torvalds #include <net/xfrm.h> 711da177e4SLinus Torvalds #include <linux/rtnetlink.h> 721da177e4SLinus Torvalds #include <linux/proc_fs.h> 731da177e4SLinus Torvalds #include <linux/seq_file.h> 741da177e4SLinus Torvalds #include <linux/netfilter.h> 751da177e4SLinus Torvalds #include <linux/netfilter_ipv4.h> 76709b46e8SEric W. Biederman #include <linux/compat.h> 77c008ba5bSHerbert Xu #include <linux/uio.h> 78c008ba5bSHerbert Xu 79c008ba5bSHerbert Xu struct raw_frag_vec { 80b61e9dccSAl Viro struct msghdr *msg; 81c008ba5bSHerbert Xu union { 82c008ba5bSHerbert Xu struct icmphdr icmph; 83c008ba5bSHerbert Xu char c[1]; 84c008ba5bSHerbert Xu } hdr; 85c008ba5bSHerbert Xu int hlen; 86c008ba5bSHerbert Xu }; 871da177e4SLinus Torvalds 88432490f9SCyrill Gorcunov struct raw_hashinfo raw_v4_hashinfo = { 89938b93adSRobert P. J. Day .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), 90b673e4dfSPavel Emelyanov }; 91432490f9SCyrill Gorcunov EXPORT_SYMBOL_GPL(raw_v4_hashinfo); 921da177e4SLinus Torvalds 93086c653fSCraig Gallek int raw_hash_sk(struct sock *sk) 941da177e4SLinus Torvalds { 95fc8717baSPavel Emelyanov struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; 9665b4c50bSPavel Emelyanov struct hlist_head *head; 971da177e4SLinus Torvalds 98c720c7e8SEric Dumazet head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; 9965b4c50bSPavel Emelyanov 10065b4c50bSPavel Emelyanov write_lock_bh(&h->lock); 1011da177e4SLinus Torvalds sk_add_node(sk, head); 10265b4c50bSPavel Emelyanov write_unlock_bh(&h->lock); 103b3cb764aSEric Dumazet sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); 104086c653fSCraig Gallek 105086c653fSCraig Gallek return 0; 10665b4c50bSPavel Emelyanov } 10765b4c50bSPavel Emelyanov EXPORT_SYMBOL_GPL(raw_hash_sk); 10865b4c50bSPavel Emelyanov 109fc8717baSPavel Emelyanov void raw_unhash_sk(struct sock *sk) 110ab70768eSPavel Emelyanov { 111fc8717baSPavel Emelyanov struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; 112fc8717baSPavel Emelyanov 113ab70768eSPavel Emelyanov write_lock_bh(&h->lock); 114ab70768eSPavel Emelyanov if (sk_del_node_init(sk)) 115c29a0bc4SPavel Emelyanov sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); 116ab70768eSPavel Emelyanov write_unlock_bh(&h->lock); 117ab70768eSPavel Emelyanov } 118ab70768eSPavel Emelyanov EXPORT_SYMBOL_GPL(raw_unhash_sk); 119ab70768eSPavel Emelyanov 120432490f9SCyrill Gorcunov struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, 12167359930SDavid Ahern unsigned short num, __be32 raddr, __be32 laddr, 12267359930SDavid Ahern int dif, int sdif) 1231da177e4SLinus Torvalds { 124b67bfe0dSSasha Levin sk_for_each_from(sk) { 1251da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 1261da177e4SLinus Torvalds 127c720c7e8SEric Dumazet if (net_eq(sock_net(sk), net) && inet->inet_num == num && 128c720c7e8SEric Dumazet !(inet->inet_daddr && inet->inet_daddr != raddr) && 129c720c7e8SEric Dumazet !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) && 1307055420fSDuncan Eastoe raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if, dif, sdif)) 1311da177e4SLinus Torvalds goto found; /* gotcha */ 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds sk = NULL; 1341da177e4SLinus Torvalds found: 1351da177e4SLinus Torvalds return sk; 1361da177e4SLinus Torvalds } 137432490f9SCyrill Gorcunov EXPORT_SYMBOL_GPL(__raw_v4_lookup); 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds /* 1401da177e4SLinus Torvalds * 0 - deliver 1411da177e4SLinus Torvalds * 1 - block 1421da177e4SLinus Torvalds */ 143ab43ed8bSEric Dumazet static int icmp_filter(const struct sock *sk, const struct sk_buff *skb) 1441da177e4SLinus Torvalds { 145ab43ed8bSEric Dumazet struct icmphdr _hdr; 146ab43ed8bSEric Dumazet const struct icmphdr *hdr; 1471da177e4SLinus Torvalds 148ab43ed8bSEric Dumazet hdr = skb_header_pointer(skb, skb_transport_offset(skb), 149ab43ed8bSEric Dumazet sizeof(_hdr), &_hdr); 150ab43ed8bSEric Dumazet if (!hdr) 1511da177e4SLinus Torvalds return 1; 1521da177e4SLinus Torvalds 153ab43ed8bSEric Dumazet if (hdr->type < 32) { 1541da177e4SLinus Torvalds __u32 data = raw_sk(sk)->filter.data; 1551da177e4SLinus Torvalds 156ab43ed8bSEric Dumazet return ((1U << hdr->type) & data) != 0; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds /* Do not block unknown ICMP types */ 1601da177e4SLinus Torvalds return 0; 1611da177e4SLinus Torvalds } 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds /* IP input processing comes here for RAW socket delivery. 1641da177e4SLinus Torvalds * Caller owns SKB, so we must make clones. 1651da177e4SLinus Torvalds * 1661da177e4SLinus Torvalds * RFC 1122: SHOULD pass TOS value up to the transport layer. 1671da177e4SLinus Torvalds * -> It does. And not only TOS, but all IP header. 1681da177e4SLinus Torvalds */ 169b71d1d42SEric Dumazet static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) 1701da177e4SLinus Torvalds { 17167359930SDavid Ahern int sdif = inet_sdif(skb); 17219e4e768SDavid Ahern int dif = inet_iif(skb); 1731da177e4SLinus Torvalds struct sock *sk; 1741da177e4SLinus Torvalds struct hlist_head *head; 175d13964f4SPatrick McHardy int delivered = 0; 176be185884SPavel Emelyanov struct net *net; 1771da177e4SLinus Torvalds 178b673e4dfSPavel Emelyanov read_lock(&raw_v4_hashinfo.lock); 179b673e4dfSPavel Emelyanov head = &raw_v4_hashinfo.ht[hash]; 1801da177e4SLinus Torvalds if (hlist_empty(head)) 1811da177e4SLinus Torvalds goto out; 182be185884SPavel Emelyanov 183c346dca1SYOSHIFUJI Hideaki net = dev_net(skb->dev); 184be185884SPavel Emelyanov sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, 18519e4e768SDavid Ahern iph->saddr, iph->daddr, dif, sdif); 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds while (sk) { 188d13964f4SPatrick McHardy delivered = 1; 189f5220d63SQuentin Armitage if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) && 190f5220d63SQuentin Armitage ip_mc_sf_allow(sk, iph->daddr, iph->saddr, 19160d9b031SDavid Ahern skb->dev->ifindex, sdif)) { 1921da177e4SLinus Torvalds struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds /* Not releasing hash table! */ 1951da177e4SLinus Torvalds if (clone) 1961da177e4SLinus Torvalds raw_rcv(sk, clone); 1971da177e4SLinus Torvalds } 198be185884SPavel Emelyanov sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, 1991da177e4SLinus Torvalds iph->saddr, iph->daddr, 20038c73529SStephen Suryaputra dif, sdif); 2011da177e4SLinus Torvalds } 2021da177e4SLinus Torvalds out: 203b673e4dfSPavel Emelyanov read_unlock(&raw_v4_hashinfo.lock); 204d13964f4SPatrick McHardy return delivered; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 2077bc54c90SPavel Emelyanov int raw_local_deliver(struct sk_buff *skb, int protocol) 2087bc54c90SPavel Emelyanov { 2097bc54c90SPavel Emelyanov int hash; 2107bc54c90SPavel Emelyanov struct sock *raw_sk; 2117bc54c90SPavel Emelyanov 212b673e4dfSPavel Emelyanov hash = protocol & (RAW_HTABLE_SIZE - 1); 213b673e4dfSPavel Emelyanov raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); 2147bc54c90SPavel Emelyanov 2157bc54c90SPavel Emelyanov /* If there maybe a raw socket we must check - if not we 2167bc54c90SPavel Emelyanov * don't care less 2177bc54c90SPavel Emelyanov */ 2187bc54c90SPavel Emelyanov if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) 2197bc54c90SPavel Emelyanov raw_sk = NULL; 2207bc54c90SPavel Emelyanov 2217bc54c90SPavel Emelyanov return raw_sk != NULL; 2227bc54c90SPavel Emelyanov 2237bc54c90SPavel Emelyanov } 2247bc54c90SPavel Emelyanov 2257bc54c90SPavel Emelyanov static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) 2261da177e4SLinus Torvalds { 2271da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 22888c7664fSArnaldo Carvalho de Melo const int type = icmp_hdr(skb)->type; 22988c7664fSArnaldo Carvalho de Melo const int code = icmp_hdr(skb)->code; 2301da177e4SLinus Torvalds int err = 0; 2311da177e4SLinus Torvalds int harderr = 0; 2321da177e4SLinus Torvalds 23336393395SDavid S. Miller if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) 23436393395SDavid S. Miller ipv4_sk_update_pmtu(skb, sk, info); 2358d65b119SDuan Jiong else if (type == ICMP_REDIRECT) { 23655be7a9cSDavid S. Miller ipv4_sk_redirect(skb, sk); 2378d65b119SDuan Jiong return; 2388d65b119SDuan Jiong } 23936393395SDavid S. Miller 2401da177e4SLinus Torvalds /* Report error on raw socket, if: 2411da177e4SLinus Torvalds 1. User requested ip_recverr. 2421da177e4SLinus Torvalds 2. Socket is connected (otherwise the error indication 2431da177e4SLinus Torvalds is useless without ip_recverr and error is hard. 2441da177e4SLinus Torvalds */ 2451da177e4SLinus Torvalds if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) 2461da177e4SLinus Torvalds return; 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds switch (type) { 2491da177e4SLinus Torvalds default: 2501da177e4SLinus Torvalds case ICMP_TIME_EXCEEDED: 2511da177e4SLinus Torvalds err = EHOSTUNREACH; 2521da177e4SLinus Torvalds break; 2531da177e4SLinus Torvalds case ICMP_SOURCE_QUENCH: 2541da177e4SLinus Torvalds return; 2551da177e4SLinus Torvalds case ICMP_PARAMETERPROB: 2561da177e4SLinus Torvalds err = EPROTO; 2571da177e4SLinus Torvalds harderr = 1; 2581da177e4SLinus Torvalds break; 2591da177e4SLinus Torvalds case ICMP_DEST_UNREACH: 2601da177e4SLinus Torvalds err = EHOSTUNREACH; 2611da177e4SLinus Torvalds if (code > NR_ICMP_UNREACH) 2621da177e4SLinus Torvalds break; 2631da177e4SLinus Torvalds if (code == ICMP_FRAG_NEEDED) { 2641da177e4SLinus Torvalds harderr = inet->pmtudisc != IP_PMTUDISC_DONT; 2651da177e4SLinus Torvalds err = EMSGSIZE; 26675511449SMiaohe Lin } else { 26775511449SMiaohe Lin err = icmp_err_convert[code].errno; 26875511449SMiaohe Lin harderr = icmp_err_convert[code].fatal; 2691da177e4SLinus Torvalds } 2701da177e4SLinus Torvalds } 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds if (inet->recverr) { 273b71d1d42SEric Dumazet const struct iphdr *iph = (const struct iphdr *)skb->data; 2741da177e4SLinus Torvalds u8 *payload = skb->data + (iph->ihl << 2); 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds if (inet->hdrincl) 2771da177e4SLinus Torvalds payload = skb->data; 2781da177e4SLinus Torvalds ip_icmp_error(sk, skb, err, 0, info, payload); 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds if (inet->recverr || harderr) { 2821da177e4SLinus Torvalds sk->sk_err = err; 283e3ae2365SAlexander Aring sk_error_report(sk); 2841da177e4SLinus Torvalds } 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds 2877bc54c90SPavel Emelyanov void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) 2887bc54c90SPavel Emelyanov { 2897bc54c90SPavel Emelyanov int hash; 2907bc54c90SPavel Emelyanov struct sock *raw_sk; 291b71d1d42SEric Dumazet const struct iphdr *iph; 292be185884SPavel Emelyanov struct net *net; 2937bc54c90SPavel Emelyanov 294b673e4dfSPavel Emelyanov hash = protocol & (RAW_HTABLE_SIZE - 1); 2957bc54c90SPavel Emelyanov 296b673e4dfSPavel Emelyanov read_lock(&raw_v4_hashinfo.lock); 297b673e4dfSPavel Emelyanov raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); 29800db4124SIan Morris if (raw_sk) { 29967359930SDavid Ahern int dif = skb->dev->ifindex; 30067359930SDavid Ahern int sdif = inet_sdif(skb); 30167359930SDavid Ahern 302b71d1d42SEric Dumazet iph = (const struct iphdr *)skb->data; 303c346dca1SYOSHIFUJI Hideaki net = dev_net(skb->dev); 304be185884SPavel Emelyanov 305be185884SPavel Emelyanov while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, 306be185884SPavel Emelyanov iph->daddr, iph->saddr, 30767359930SDavid Ahern dif, sdif)) != NULL) { 3087bc54c90SPavel Emelyanov raw_err(raw_sk, skb, info); 3097bc54c90SPavel Emelyanov raw_sk = sk_next(raw_sk); 310b71d1d42SEric Dumazet iph = (const struct iphdr *)skb->data; 3117bc54c90SPavel Emelyanov } 3127bc54c90SPavel Emelyanov } 313b673e4dfSPavel Emelyanov read_unlock(&raw_v4_hashinfo.lock); 3147bc54c90SPavel Emelyanov } 3157bc54c90SPavel Emelyanov 3161da177e4SLinus Torvalds static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) 3171da177e4SLinus Torvalds { 3181da177e4SLinus Torvalds /* Charge it to the socket. */ 3191da177e4SLinus Torvalds 320fbf8866dSShawn Bohrer ipv4_pktinfo_prepare(sk, skb); 321d826eb14SEric Dumazet if (sock_queue_rcv_skb(sk, skb) < 0) { 3221da177e4SLinus Torvalds kfree_skb(skb); 3231da177e4SLinus Torvalds return NET_RX_DROP; 3241da177e4SLinus Torvalds } 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds return NET_RX_SUCCESS; 3271da177e4SLinus Torvalds } 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds int raw_rcv(struct sock *sk, struct sk_buff *skb) 3301da177e4SLinus Torvalds { 3311da177e4SLinus Torvalds if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { 33233c732c3SWang Chen atomic_inc(&sk->sk_drops); 3331da177e4SLinus Torvalds kfree_skb(skb); 3341da177e4SLinus Torvalds return NET_RX_DROP; 3351da177e4SLinus Torvalds } 336895b5c9fSFlorian Westphal nf_reset_ct(skb); 3371da177e4SLinus Torvalds 338d56f90a7SArnaldo Carvalho de Melo skb_push(skb, skb->data - skb_network_header(skb)); 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds raw_rcv_skb(sk, skb); 3411da177e4SLinus Torvalds return 0; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 34477968b78SDavid S. Miller static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, 3457ae9abfdSAl Viro struct msghdr *msg, size_t length, 346c14ac945SSoheil Hassas Yeganeh struct rtable **rtp, unsigned int flags, 347c14ac945SSoheil Hassas Yeganeh const struct sockcm_cookie *sockc) 3481da177e4SLinus Torvalds { 3491da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 3500388b004SPavel Emelyanov struct net *net = sock_net(sk); 3511da177e4SLinus Torvalds struct iphdr *iph; 3521da177e4SLinus Torvalds struct sk_buff *skb; 353f844c74fSHerbert Xu unsigned int iphlen; 3541da177e4SLinus Torvalds int err; 3551789a640SEric Dumazet struct rtable *rt = *rtp; 35666088243SHerbert Xu int hlen, tlen; 3571da177e4SLinus Torvalds 358d8d1f30bSChangli Gao if (length > rt->dst.dev->mtu) { 35977968b78SDavid S. Miller ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, 360d8d1f30bSChangli Gao rt->dst.dev->mtu); 3611da177e4SLinus Torvalds return -EMSGSIZE; 3621da177e4SLinus Torvalds } 36386f4c90aSAlexander Potapenko if (length < sizeof(struct iphdr)) 36486f4c90aSAlexander Potapenko return -EINVAL; 36586f4c90aSAlexander Potapenko 3661da177e4SLinus Torvalds if (flags&MSG_PROBE) 3671da177e4SLinus Torvalds goto out; 3681da177e4SLinus Torvalds 36966088243SHerbert Xu hlen = LL_RESERVED_SPACE(rt->dst.dev); 37066088243SHerbert Xu tlen = rt->dst.dev->needed_tailroom; 371f5184d26SJohannes Berg skb = sock_alloc_send_skb(sk, 37266088243SHerbert Xu length + hlen + tlen + 15, 3731da177e4SLinus Torvalds flags & MSG_DONTWAIT, &err); 37451456b29SIan Morris if (!skb) 3751da177e4SLinus Torvalds goto error; 37666088243SHerbert Xu skb_reserve(skb, hlen); 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds skb->priority = sk->sk_priority; 379c6af0c22SWillem de Bruijn skb->mark = sockc->mark; 380bc969a97SJesus Sanchez-Palencia skb->tstamp = sockc->transmit_time; 381d8d1f30bSChangli Gao skb_dst_set(skb, &rt->dst); 3821789a640SEric Dumazet *rtp = NULL; 3831da177e4SLinus Torvalds 3847e28ecc2SArnaldo Carvalho de Melo skb_reset_network_header(skb); 385eddc9ec5SArnaldo Carvalho de Melo iph = ip_hdr(skb); 3867e28ecc2SArnaldo Carvalho de Melo skb_put(skb, length); 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds skb->ip_summed = CHECKSUM_NONE; 3891da177e4SLinus Torvalds 3908f932f76SWillem de Bruijn skb_setup_tx_timestamp(skb, sockc->tsflags); 39111878b40SWillem de Bruijn 3920dec879fSJulian Anastasov if (flags & MSG_CONFIRM) 3930dec879fSJulian Anastasov skb_set_dst_pending_confirm(skb, 1); 3940dec879fSJulian Anastasov 395b0e380b1SArnaldo Carvalho de Melo skb->transport_header = skb->network_header; 39655888dfbSNeil Horman err = -EFAULT; 39721226abbSAl Viro if (memcpy_from_msg(iph, msg, length)) 39855888dfbSNeil Horman goto error_free; 3991da177e4SLinus Torvalds 400f844c74fSHerbert Xu iphlen = iph->ihl * 4; 40155888dfbSNeil Horman 40255888dfbSNeil Horman /* 40355888dfbSNeil Horman * We don't want to modify the ip header, but we do need to 40455888dfbSNeil Horman * be sure that it won't cause problems later along the network 40555888dfbSNeil Horman * stack. Specifically we want to make sure that iph->ihl is a 40655888dfbSNeil Horman * sane value. If ihl points beyond the length of the buffer passed 40755888dfbSNeil Horman * in, reject the frame as invalid 40855888dfbSNeil Horman */ 40955888dfbSNeil Horman err = -EINVAL; 41055888dfbSNeil Horman if (iphlen > length) 41155888dfbSNeil Horman goto error_free; 41255888dfbSNeil Horman 41355888dfbSNeil Horman if (iphlen >= sizeof(*iph)) { 4141da177e4SLinus Torvalds if (!iph->saddr) 41577968b78SDavid S. Miller iph->saddr = fl4->saddr; 4161da177e4SLinus Torvalds iph->check = 0; 4171da177e4SLinus Torvalds iph->tot_len = htons(length); 4181da177e4SLinus Torvalds if (!iph->id) 419b6a7719aSHannes Frederic Sowa ip_select_ident(net, skb, NULL); 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); 422027ac58eSBen Cartwright-Cox skb->transport_header += iphlen; 423027ac58eSBen Cartwright-Cox if (iph->protocol == IPPROTO_ICMP && 424027ac58eSBen Cartwright-Cox length >= iphlen + sizeof(struct icmphdr)) 4250388b004SPavel Emelyanov icmp_out_count(net, ((struct icmphdr *) 42696793b48SDavid L Stevens skb_transport_header(skb))->type); 427027ac58eSBen Cartwright-Cox } 4281da177e4SLinus Torvalds 42929a26a56SEric W. Biederman err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, 43029a26a56SEric W. Biederman net, sk, skb, NULL, rt->dst.dev, 43113206b6bSEric W. Biederman dst_output); 4321da177e4SLinus Torvalds if (err > 0) 4336ce9e7b5SEric Dumazet err = net_xmit_errno(err); 4341da177e4SLinus Torvalds if (err) 4351da177e4SLinus Torvalds goto error; 4361da177e4SLinus Torvalds out: 4371da177e4SLinus Torvalds return 0; 4381da177e4SLinus Torvalds 43955888dfbSNeil Horman error_free: 4401da177e4SLinus Torvalds kfree_skb(skb); 4411da177e4SLinus Torvalds error: 4425e38e270SPavel Emelyanov IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); 4436ce9e7b5SEric Dumazet if (err == -ENOBUFS && !inet->recverr) 4446ce9e7b5SEric Dumazet err = 0; 4451da177e4SLinus Torvalds return err; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds 448c008ba5bSHerbert Xu static int raw_probe_proto_opt(struct raw_frag_vec *rfv, struct flowi4 *fl4) 4491da177e4SLinus Torvalds { 45032b5913aSHerbert Xu int err; 4511da177e4SLinus Torvalds 45232b5913aSHerbert Xu if (fl4->flowi4_proto != IPPROTO_ICMP) 453a27b58feSHeiko Carstens return 0; 4541da177e4SLinus Torvalds 45532b5913aSHerbert Xu /* We only need the first two bytes. */ 456c008ba5bSHerbert Xu rfv->hlen = 2; 457c008ba5bSHerbert Xu 458b61e9dccSAl Viro err = memcpy_from_msg(rfv->hdr.c, rfv->msg, rfv->hlen); 45932b5913aSHerbert Xu if (err) 46032b5913aSHerbert Xu return err; 4611da177e4SLinus Torvalds 462c008ba5bSHerbert Xu fl4->fl4_icmp_type = rfv->hdr.icmph.type; 463c008ba5bSHerbert Xu fl4->fl4_icmp_code = rfv->hdr.icmph.code; 4641da177e4SLinus Torvalds 465a27b58feSHeiko Carstens return 0; 4661da177e4SLinus Torvalds } 4671da177e4SLinus Torvalds 468c008ba5bSHerbert Xu static int raw_getfrag(void *from, char *to, int offset, int len, int odd, 469c008ba5bSHerbert Xu struct sk_buff *skb) 470c008ba5bSHerbert Xu { 471c008ba5bSHerbert Xu struct raw_frag_vec *rfv = from; 472c008ba5bSHerbert Xu 473c008ba5bSHerbert Xu if (offset < rfv->hlen) { 474c008ba5bSHerbert Xu int copy = min(rfv->hlen - offset, len); 475c008ba5bSHerbert Xu 476c008ba5bSHerbert Xu if (skb->ip_summed == CHECKSUM_PARTIAL) 477c008ba5bSHerbert Xu memcpy(to, rfv->hdr.c + offset, copy); 478c008ba5bSHerbert Xu else 479c008ba5bSHerbert Xu skb->csum = csum_block_add( 480c008ba5bSHerbert Xu skb->csum, 481c008ba5bSHerbert Xu csum_partial_copy_nocheck(rfv->hdr.c + offset, 482cc44c17bSAl Viro to, copy), 483c008ba5bSHerbert Xu odd); 484c008ba5bSHerbert Xu 485c008ba5bSHerbert Xu odd = 0; 486c008ba5bSHerbert Xu offset += copy; 487c008ba5bSHerbert Xu to += copy; 488c008ba5bSHerbert Xu len -= copy; 489c008ba5bSHerbert Xu 490c008ba5bSHerbert Xu if (!len) 491c008ba5bSHerbert Xu return 0; 492c008ba5bSHerbert Xu } 493c008ba5bSHerbert Xu 494c008ba5bSHerbert Xu offset -= rfv->hlen; 495c008ba5bSHerbert Xu 496f69e6d13SAl Viro return ip_generic_getfrag(rfv->msg, to, offset, len, odd, skb); 497c008ba5bSHerbert Xu } 498c008ba5bSHerbert Xu 4991b784140SYing Xue static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) 5001da177e4SLinus Torvalds { 5011da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 502bb191c3eSDavid Ahern struct net *net = sock_net(sk); 5031da177e4SLinus Torvalds struct ipcm_cookie ipc; 5041da177e4SLinus Torvalds struct rtable *rt = NULL; 50577968b78SDavid S. Miller struct flowi4 fl4; 5061da177e4SLinus Torvalds int free = 0; 5073ca3c68eSAl Viro __be32 daddr; 508c1d18f9fSAl Viro __be32 saddr; 5091da177e4SLinus Torvalds u8 tos; 5101da177e4SLinus Torvalds int err; 511f6d8bd05SEric Dumazet struct ip_options_data opt_copy; 512c008ba5bSHerbert Xu struct raw_frag_vec rfv; 5138f659a03SMohamed Ghannam int hdrincl; 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds err = -EMSGSIZE; 516926d4b81SJesper Juhl if (len > 0xFFFF) 5171da177e4SLinus Torvalds goto out; 5181da177e4SLinus Torvalds 5198f659a03SMohamed Ghannam /* hdrincl should be READ_ONCE(inet->hdrincl) 52020b50d79SNicolai Stange * but READ_ONCE() doesn't work with bit fields. 52120b50d79SNicolai Stange * Doing this indirectly yields the same result. 5228f659a03SMohamed Ghannam */ 5238f659a03SMohamed Ghannam hdrincl = inet->hdrincl; 52420b50d79SNicolai Stange hdrincl = READ_ONCE(hdrincl); 5251da177e4SLinus Torvalds /* 5261da177e4SLinus Torvalds * Check the flags. 5271da177e4SLinus Torvalds */ 5281da177e4SLinus Torvalds 5291da177e4SLinus Torvalds err = -EOPNOTSUPP; 5301da177e4SLinus Torvalds if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ 5311da177e4SLinus Torvalds goto out; /* compatibility */ 5321da177e4SLinus Torvalds 5331da177e4SLinus Torvalds /* 5341da177e4SLinus Torvalds * Get and verify the address. 5351da177e4SLinus Torvalds */ 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds if (msg->msg_namelen) { 538342dfc30SSteffen Hurrle DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name); 5391da177e4SLinus Torvalds err = -EINVAL; 5401da177e4SLinus Torvalds if (msg->msg_namelen < sizeof(*usin)) 5411da177e4SLinus Torvalds goto out; 5421da177e4SLinus Torvalds if (usin->sin_family != AF_INET) { 543058bd4d2SJoe Perches pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n", 544058bd4d2SJoe Perches __func__, current->comm); 5451da177e4SLinus Torvalds err = -EAFNOSUPPORT; 5461da177e4SLinus Torvalds if (usin->sin_family) 5471da177e4SLinus Torvalds goto out; 5481da177e4SLinus Torvalds } 5491da177e4SLinus Torvalds daddr = usin->sin_addr.s_addr; 5501da177e4SLinus Torvalds /* ANK: I did not forget to get protocol from port field. 5511da177e4SLinus Torvalds * I just do not know, who uses this weirdness. 5521da177e4SLinus Torvalds * IP_HDRINCL is much more convenient. 5531da177e4SLinus Torvalds */ 5541da177e4SLinus Torvalds } else { 5551da177e4SLinus Torvalds err = -EDESTADDRREQ; 5561da177e4SLinus Torvalds if (sk->sk_state != TCP_ESTABLISHED) 5571da177e4SLinus Torvalds goto out; 558c720c7e8SEric Dumazet daddr = inet->inet_daddr; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 56135178206SWillem de Bruijn ipcm_init_sk(&ipc, inet); 5621da177e4SLinus Torvalds 5631da177e4SLinus Torvalds if (msg->msg_controllen) { 56424025c46SSoheil Hassas Yeganeh err = ip_cmsg_send(sk, msg, &ipc, false); 56591948309SEric Dumazet if (unlikely(err)) { 56691948309SEric Dumazet kfree(ipc.opt); 5671da177e4SLinus Torvalds goto out; 56891948309SEric Dumazet } 5691da177e4SLinus Torvalds if (ipc.opt) 5701da177e4SLinus Torvalds free = 1; 5711da177e4SLinus Torvalds } 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds saddr = ipc.addr; 5741da177e4SLinus Torvalds ipc.addr = daddr; 5751da177e4SLinus Torvalds 576f6d8bd05SEric Dumazet if (!ipc.opt) { 577f6d8bd05SEric Dumazet struct ip_options_rcu *inet_opt; 578f6d8bd05SEric Dumazet 579f6d8bd05SEric Dumazet rcu_read_lock(); 580f6d8bd05SEric Dumazet inet_opt = rcu_dereference(inet->inet_opt); 581f6d8bd05SEric Dumazet if (inet_opt) { 582f6d8bd05SEric Dumazet memcpy(&opt_copy, inet_opt, 583f6d8bd05SEric Dumazet sizeof(*inet_opt) + inet_opt->opt.optlen); 584f6d8bd05SEric Dumazet ipc.opt = &opt_copy.opt; 585f6d8bd05SEric Dumazet } 586f6d8bd05SEric Dumazet rcu_read_unlock(); 587f6d8bd05SEric Dumazet } 5881da177e4SLinus Torvalds 5891da177e4SLinus Torvalds if (ipc.opt) { 5901da177e4SLinus Torvalds err = -EINVAL; 5911da177e4SLinus Torvalds /* Linux does not mangle headers on raw sockets, 5921da177e4SLinus Torvalds * so that IP options + IP_HDRINCL is non-sense. 5931da177e4SLinus Torvalds */ 5948f659a03SMohamed Ghannam if (hdrincl) 5951da177e4SLinus Torvalds goto done; 596f6d8bd05SEric Dumazet if (ipc.opt->opt.srr) { 5971da177e4SLinus Torvalds if (!daddr) 5981da177e4SLinus Torvalds goto done; 599f6d8bd05SEric Dumazet daddr = ipc.opt->opt.faddr; 6001da177e4SLinus Torvalds } 6011da177e4SLinus Torvalds } 602aa661581SFrancesco Fusco tos = get_rtconn_flags(&ipc, sk); 6031da177e4SLinus Torvalds if (msg->msg_flags & MSG_DONTROUTE) 6041da177e4SLinus Torvalds tos |= RTO_ONLINK; 6051da177e4SLinus Torvalds 606f97c1e0cSJoe Perches if (ipv4_is_multicast(daddr)) { 607854da991SRobert Shearman if (!ipc.oif || netif_index_is_l3_master(sock_net(sk), ipc.oif)) 6081da177e4SLinus Torvalds ipc.oif = inet->mc_index; 6091da177e4SLinus Torvalds if (!saddr) 6101da177e4SLinus Torvalds saddr = inet->mc_addr; 6119515a2e0SDavid Ahern } else if (!ipc.oif) { 61276e21053SErich E. Hoover ipc.oif = inet->uc_index; 6139515a2e0SDavid Ahern } else if (ipv4_is_lbcast(daddr) && inet->uc_index) { 614645f0897SMiaohe Lin /* oif is set, packet is to local broadcast 6159515a2e0SDavid Ahern * and uc_index is set. oif is most likely set 6169515a2e0SDavid Ahern * by sk_bound_dev_if. If uc_index != oif check if the 6179515a2e0SDavid Ahern * oif is an L3 master and uc_index is an L3 slave. 6189515a2e0SDavid Ahern * If so, we want to allow the send using the uc_index. 6199515a2e0SDavid Ahern */ 6209515a2e0SDavid Ahern if (ipc.oif != inet->uc_index && 6219515a2e0SDavid Ahern ipc.oif == l3mdev_master_ifindex_by_index(sock_net(sk), 6229515a2e0SDavid Ahern inet->uc_index)) { 6239515a2e0SDavid Ahern ipc.oif = inet->uc_index; 6249515a2e0SDavid Ahern } 6259515a2e0SDavid Ahern } 6261da177e4SLinus Torvalds 627c6af0c22SWillem de Bruijn flowi4_init_output(&fl4, ipc.oif, ipc.sockc.mark, tos, 628ef164ae3SDavid S. Miller RT_SCOPE_UNIVERSE, 6298f659a03SMohamed Ghannam hdrincl ? IPPROTO_RAW : sk->sk_protocol, 6300e0d44abSSteffen Klassert inet_sk_flowi_flags(sk) | 6318f659a03SMohamed Ghannam (hdrincl ? FLOWI_FLAG_KNOWN_NH : 0), 632e2d118a1SLorenzo Colitti daddr, saddr, 0, 0, sk->sk_uid); 633ef164ae3SDavid S. Miller 6348f659a03SMohamed Ghannam if (!hdrincl) { 635b61e9dccSAl Viro rfv.msg = msg; 636c008ba5bSHerbert Xu rfv.hlen = 0; 637c008ba5bSHerbert Xu 638c008ba5bSHerbert Xu err = raw_probe_proto_opt(&rfv, &fl4); 639a27b58feSHeiko Carstens if (err) 640a27b58feSHeiko Carstens goto done; 641a27b58feSHeiko Carstens } 6421da177e4SLinus Torvalds 6433df98d79SPaul Moore security_sk_classify_flow(sk, flowi4_to_flowi_common(&fl4)); 644bb191c3eSDavid Ahern rt = ip_route_output_flow(net, &fl4, sk); 645b23dd4feSDavid S. Miller if (IS_ERR(rt)) { 646b23dd4feSDavid S. Miller err = PTR_ERR(rt); 6474910ac6cSDavid S. Miller rt = NULL; 6481da177e4SLinus Torvalds goto done; 649b23dd4feSDavid S. Miller } 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds err = -EACCES; 6521da177e4SLinus Torvalds if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) 6531da177e4SLinus Torvalds goto done; 6541da177e4SLinus Torvalds 6551da177e4SLinus Torvalds if (msg->msg_flags & MSG_CONFIRM) 6561da177e4SLinus Torvalds goto do_confirm; 6571da177e4SLinus Torvalds back_from_confirm: 6581da177e4SLinus Torvalds 6598f659a03SMohamed Ghannam if (hdrincl) 6607ae9abfdSAl Viro err = raw_send_hdrinc(sk, &fl4, msg, len, 661c14ac945SSoheil Hassas Yeganeh &rt, msg->msg_flags, &ipc.sockc); 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds else { 6641da177e4SLinus Torvalds if (!ipc.addr) 66577968b78SDavid S. Miller ipc.addr = fl4.daddr; 6661da177e4SLinus Torvalds lock_sock(sk); 667c008ba5bSHerbert Xu err = ip_append_data(sk, &fl4, raw_getfrag, 668c008ba5bSHerbert Xu &rfv, len, 0, 6692e77d89bSEric Dumazet &ipc, &rt, msg->msg_flags); 6701da177e4SLinus Torvalds if (err) 6711da177e4SLinus Torvalds ip_flush_pending_frames(sk); 6726ce9e7b5SEric Dumazet else if (!(msg->msg_flags & MSG_MORE)) { 67377968b78SDavid S. Miller err = ip_push_pending_frames(sk, &fl4); 6746ce9e7b5SEric Dumazet if (err == -ENOBUFS && !inet->recverr) 6756ce9e7b5SEric Dumazet err = 0; 6766ce9e7b5SEric Dumazet } 6771da177e4SLinus Torvalds release_sock(sk); 6781da177e4SLinus Torvalds } 6791da177e4SLinus Torvalds done: 6801da177e4SLinus Torvalds if (free) 6811da177e4SLinus Torvalds kfree(ipc.opt); 6821da177e4SLinus Torvalds ip_rt_put(rt); 6831da177e4SLinus Torvalds 6845418c692SJesper Juhl out: 6855418c692SJesper Juhl if (err < 0) 6865418c692SJesper Juhl return err; 6875418c692SJesper Juhl return len; 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds do_confirm: 6900dec879fSJulian Anastasov if (msg->msg_flags & MSG_PROBE) 6910dec879fSJulian Anastasov dst_confirm_neigh(&rt->dst, &fl4.daddr); 6921da177e4SLinus Torvalds if (!(msg->msg_flags & MSG_PROBE) || len) 6931da177e4SLinus Torvalds goto back_from_confirm; 6941da177e4SLinus Torvalds err = 0; 6951da177e4SLinus Torvalds goto done; 6961da177e4SLinus Torvalds } 6971da177e4SLinus Torvalds 6981da177e4SLinus Torvalds static void raw_close(struct sock *sk, long timeout) 6991da177e4SLinus Torvalds { 7001da177e4SLinus Torvalds /* 70125985edcSLucas De Marchi * Raw sockets may have direct kernel references. Kill them. 7021da177e4SLinus Torvalds */ 7031da177e4SLinus Torvalds ip_ra_control(sk, 0, NULL); 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds sk_common_release(sk); 7061da177e4SLinus Torvalds } 7071da177e4SLinus Torvalds 7087d06b2e0SBrian Haley static void raw_destroy(struct sock *sk) 70922dd4850SDenis V. Lunev { 71022dd4850SDenis V. Lunev lock_sock(sk); 71122dd4850SDenis V. Lunev ip_flush_pending_frames(sk); 71222dd4850SDenis V. Lunev release_sock(sk); 71322dd4850SDenis V. Lunev } 71422dd4850SDenis V. Lunev 7151da177e4SLinus Torvalds /* This gets rid of all the nasties in af_inet. -DaveM */ 7161da177e4SLinus Torvalds static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) 7171da177e4SLinus Torvalds { 7181da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 7191da177e4SLinus Torvalds struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; 7208ff978b8SRiccardo Paolo Bestetti struct net *net = sock_net(sk); 721cd2c0f45SDavid Ahern u32 tb_id = RT_TABLE_LOCAL; 7221da177e4SLinus Torvalds int ret = -EINVAL; 7231da177e4SLinus Torvalds int chk_addr_ret; 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) 7261da177e4SLinus Torvalds goto out; 727cd2c0f45SDavid Ahern 728cd2c0f45SDavid Ahern if (sk->sk_bound_dev_if) 7298ff978b8SRiccardo Paolo Bestetti tb_id = l3mdev_fib_table_by_index(net, 730cd2c0f45SDavid Ahern sk->sk_bound_dev_if) ? : tb_id; 731cd2c0f45SDavid Ahern 7328ff978b8SRiccardo Paolo Bestetti chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id); 733cd2c0f45SDavid Ahern 7341da177e4SLinus Torvalds ret = -EADDRNOTAVAIL; 7358ff978b8SRiccardo Paolo Bestetti if (!inet_addr_valid_or_nonlocal(net, inet, addr->sin_addr.s_addr, 7368ff978b8SRiccardo Paolo Bestetti chk_addr_ret)) 7371da177e4SLinus Torvalds goto out; 7388ff978b8SRiccardo Paolo Bestetti 739c720c7e8SEric Dumazet inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; 7401da177e4SLinus Torvalds if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) 741c720c7e8SEric Dumazet inet->inet_saddr = 0; /* Use device */ 7421da177e4SLinus Torvalds sk_dst_reset(sk); 7431da177e4SLinus Torvalds ret = 0; 7441da177e4SLinus Torvalds out: return ret; 7451da177e4SLinus Torvalds } 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds /* 7481da177e4SLinus Torvalds * This should be easy, if there is something there 7491da177e4SLinus Torvalds * we return it, otherwise we block. 7501da177e4SLinus Torvalds */ 7511da177e4SLinus Torvalds 7521b784140SYing Xue static int raw_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, 7531b784140SYing Xue int noblock, int flags, int *addr_len) 7541da177e4SLinus Torvalds { 7551da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 7561da177e4SLinus Torvalds size_t copied = 0; 7571da177e4SLinus Torvalds int err = -EOPNOTSUPP; 758342dfc30SSteffen Hurrle DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name); 7591da177e4SLinus Torvalds struct sk_buff *skb; 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds if (flags & MSG_OOB) 7621da177e4SLinus Torvalds goto out; 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds if (flags & MSG_ERRQUEUE) { 76585fbaa75SHannes Frederic Sowa err = ip_recv_error(sk, msg, len, addr_len); 7661da177e4SLinus Torvalds goto out; 7671da177e4SLinus Torvalds } 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds skb = skb_recv_datagram(sk, flags, noblock, &err); 7701da177e4SLinus Torvalds if (!skb) 7711da177e4SLinus Torvalds goto out; 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds copied = skb->len; 7741da177e4SLinus Torvalds if (len < copied) { 7751da177e4SLinus Torvalds msg->msg_flags |= MSG_TRUNC; 7761da177e4SLinus Torvalds copied = len; 7771da177e4SLinus Torvalds } 7781da177e4SLinus Torvalds 77951f3d02bSDavid S. Miller err = skb_copy_datagram_msg(skb, 0, msg, copied); 7801da177e4SLinus Torvalds if (err) 7811da177e4SLinus Torvalds goto done; 7821da177e4SLinus Torvalds 7833b885787SNeil Horman sock_recv_ts_and_drops(msg, sk, skb); 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds /* Copy the address. */ 7861da177e4SLinus Torvalds if (sin) { 7871da177e4SLinus Torvalds sin->sin_family = AF_INET; 788eddc9ec5SArnaldo Carvalho de Melo sin->sin_addr.s_addr = ip_hdr(skb)->saddr; 789f59fc7f3STetsuo Handa sin->sin_port = 0; 7901da177e4SLinus Torvalds memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); 791bceaa902SHannes Frederic Sowa *addr_len = sizeof(*sin); 7921da177e4SLinus Torvalds } 7931da177e4SLinus Torvalds if (inet->cmsg_flags) 7941da177e4SLinus Torvalds ip_cmsg_recv(msg, skb); 7951da177e4SLinus Torvalds if (flags & MSG_TRUNC) 7961da177e4SLinus Torvalds copied = skb->len; 7971da177e4SLinus Torvalds done: 7981da177e4SLinus Torvalds skb_free_datagram(sk, skb); 7995418c692SJesper Juhl out: 8005418c692SJesper Juhl if (err) 8015418c692SJesper Juhl return err; 8025418c692SJesper Juhl return copied; 8031da177e4SLinus Torvalds } 8041da177e4SLinus Torvalds 8056897445fSMike Manning static int raw_sk_init(struct sock *sk) 8061da177e4SLinus Torvalds { 8071da177e4SLinus Torvalds struct raw_sock *rp = raw_sk(sk); 8081da177e4SLinus Torvalds 809c720c7e8SEric Dumazet if (inet_sk(sk)->inet_num == IPPROTO_ICMP) 8101da177e4SLinus Torvalds memset(&rp->filter, 0, sizeof(rp->filter)); 8111da177e4SLinus Torvalds return 0; 8121da177e4SLinus Torvalds } 8131da177e4SLinus Torvalds 814a7b75c5aSChristoph Hellwig static int raw_seticmpfilter(struct sock *sk, sockptr_t optval, int optlen) 8151da177e4SLinus Torvalds { 8161da177e4SLinus Torvalds if (optlen > sizeof(struct icmp_filter)) 8171da177e4SLinus Torvalds optlen = sizeof(struct icmp_filter); 818a7b75c5aSChristoph Hellwig if (copy_from_sockptr(&raw_sk(sk)->filter, optval, optlen)) 8191da177e4SLinus Torvalds return -EFAULT; 8201da177e4SLinus Torvalds return 0; 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) 8241da177e4SLinus Torvalds { 8251da177e4SLinus Torvalds int len, ret = -EFAULT; 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds if (get_user(len, optlen)) 8281da177e4SLinus Torvalds goto out; 8291da177e4SLinus Torvalds ret = -EINVAL; 8301da177e4SLinus Torvalds if (len < 0) 8311da177e4SLinus Torvalds goto out; 8321da177e4SLinus Torvalds if (len > sizeof(struct icmp_filter)) 8331da177e4SLinus Torvalds len = sizeof(struct icmp_filter); 8341da177e4SLinus Torvalds ret = -EFAULT; 8351da177e4SLinus Torvalds if (put_user(len, optlen) || 8361da177e4SLinus Torvalds copy_to_user(optval, &raw_sk(sk)->filter, len)) 8371da177e4SLinus Torvalds goto out; 8381da177e4SLinus Torvalds ret = 0; 8391da177e4SLinus Torvalds out: return ret; 8401da177e4SLinus Torvalds } 8411da177e4SLinus Torvalds 8423fdadf7dSDmitry Mishin static int do_raw_setsockopt(struct sock *sk, int level, int optname, 843a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8441da177e4SLinus Torvalds { 8451da177e4SLinus Torvalds if (optname == ICMP_FILTER) { 846c720c7e8SEric Dumazet if (inet_sk(sk)->inet_num != IPPROTO_ICMP) 8471da177e4SLinus Torvalds return -EOPNOTSUPP; 8481da177e4SLinus Torvalds else 8491da177e4SLinus Torvalds return raw_seticmpfilter(sk, optval, optlen); 8501da177e4SLinus Torvalds } 8511da177e4SLinus Torvalds return -ENOPROTOOPT; 8521da177e4SLinus Torvalds } 8531da177e4SLinus Torvalds 8543fdadf7dSDmitry Mishin static int raw_setsockopt(struct sock *sk, int level, int optname, 855a7b75c5aSChristoph Hellwig sockptr_t optval, unsigned int optlen) 8561da177e4SLinus Torvalds { 8571da177e4SLinus Torvalds if (level != SOL_RAW) 8583fdadf7dSDmitry Mishin return ip_setsockopt(sk, level, optname, optval, optlen); 8593fdadf7dSDmitry Mishin return do_raw_setsockopt(sk, level, optname, optval, optlen); 8603fdadf7dSDmitry Mishin } 8611da177e4SLinus Torvalds 8623fdadf7dSDmitry Mishin static int do_raw_getsockopt(struct sock *sk, int level, int optname, 8633fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 8643fdadf7dSDmitry Mishin { 8651da177e4SLinus Torvalds if (optname == ICMP_FILTER) { 866c720c7e8SEric Dumazet if (inet_sk(sk)->inet_num != IPPROTO_ICMP) 8671da177e4SLinus Torvalds return -EOPNOTSUPP; 8681da177e4SLinus Torvalds else 8691da177e4SLinus Torvalds return raw_geticmpfilter(sk, optval, optlen); 8701da177e4SLinus Torvalds } 8711da177e4SLinus Torvalds return -ENOPROTOOPT; 8721da177e4SLinus Torvalds } 8731da177e4SLinus Torvalds 8743fdadf7dSDmitry Mishin static int raw_getsockopt(struct sock *sk, int level, int optname, 8753fdadf7dSDmitry Mishin char __user *optval, int __user *optlen) 8763fdadf7dSDmitry Mishin { 8773fdadf7dSDmitry Mishin if (level != SOL_RAW) 8783fdadf7dSDmitry Mishin return ip_getsockopt(sk, level, optname, optval, optlen); 8793fdadf7dSDmitry Mishin return do_raw_getsockopt(sk, level, optname, optval, optlen); 8803fdadf7dSDmitry Mishin } 8813fdadf7dSDmitry Mishin 8821da177e4SLinus Torvalds static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) 8831da177e4SLinus Torvalds { 8841da177e4SLinus Torvalds switch (cmd) { 8851da177e4SLinus Torvalds case SIOCOUTQ: { 88631e6d363SEric Dumazet int amount = sk_wmem_alloc_get(sk); 88731e6d363SEric Dumazet 8881da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 8891da177e4SLinus Torvalds } 8901da177e4SLinus Torvalds case SIOCINQ: { 8911da177e4SLinus Torvalds struct sk_buff *skb; 8921da177e4SLinus Torvalds int amount = 0; 8931da177e4SLinus Torvalds 894e0f9f858SHerbert Xu spin_lock_bh(&sk->sk_receive_queue.lock); 8951da177e4SLinus Torvalds skb = skb_peek(&sk->sk_receive_queue); 89600db4124SIan Morris if (skb) 8971da177e4SLinus Torvalds amount = skb->len; 898e0f9f858SHerbert Xu spin_unlock_bh(&sk->sk_receive_queue.lock); 8991da177e4SLinus Torvalds return put_user(amount, (int __user *)arg); 9001da177e4SLinus Torvalds } 9011da177e4SLinus Torvalds 9021da177e4SLinus Torvalds default: 9031da177e4SLinus Torvalds #ifdef CONFIG_IP_MROUTE 9041da177e4SLinus Torvalds return ipmr_ioctl(sk, cmd, (void __user *)arg); 9051da177e4SLinus Torvalds #else 9061da177e4SLinus Torvalds return -ENOIOCTLCMD; 9071da177e4SLinus Torvalds #endif 9081da177e4SLinus Torvalds } 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds 911709b46e8SEric W. Biederman #ifdef CONFIG_COMPAT 912709b46e8SEric W. Biederman static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) 913709b46e8SEric W. Biederman { 914709b46e8SEric W. Biederman switch (cmd) { 915709b46e8SEric W. Biederman case SIOCOUTQ: 916709b46e8SEric W. Biederman case SIOCINQ: 917709b46e8SEric W. Biederman return -ENOIOCTLCMD; 918709b46e8SEric W. Biederman default: 919709b46e8SEric W. Biederman #ifdef CONFIG_IP_MROUTE 920709b46e8SEric W. Biederman return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); 921709b46e8SEric W. Biederman #else 922709b46e8SEric W. Biederman return -ENOIOCTLCMD; 923709b46e8SEric W. Biederman #endif 924709b46e8SEric W. Biederman } 925709b46e8SEric W. Biederman } 926709b46e8SEric W. Biederman #endif 927709b46e8SEric W. Biederman 928432490f9SCyrill Gorcunov int raw_abort(struct sock *sk, int err) 929432490f9SCyrill Gorcunov { 930432490f9SCyrill Gorcunov lock_sock(sk); 931432490f9SCyrill Gorcunov 932432490f9SCyrill Gorcunov sk->sk_err = err; 933e3ae2365SAlexander Aring sk_error_report(sk); 9343de864f8SCyrill Gorcunov __udp_disconnect(sk, 0); 935432490f9SCyrill Gorcunov 936432490f9SCyrill Gorcunov release_sock(sk); 937432490f9SCyrill Gorcunov 938432490f9SCyrill Gorcunov return 0; 939432490f9SCyrill Gorcunov } 940432490f9SCyrill Gorcunov EXPORT_SYMBOL_GPL(raw_abort); 941432490f9SCyrill Gorcunov 9421da177e4SLinus Torvalds struct proto raw_prot = { 9431da177e4SLinus Torvalds .name = "RAW", 9441da177e4SLinus Torvalds .owner = THIS_MODULE, 9451da177e4SLinus Torvalds .close = raw_close, 94622dd4850SDenis V. Lunev .destroy = raw_destroy, 9471da177e4SLinus Torvalds .connect = ip4_datagram_connect, 948286c72deSEric Dumazet .disconnect = __udp_disconnect, 9491da177e4SLinus Torvalds .ioctl = raw_ioctl, 9506897445fSMike Manning .init = raw_sk_init, 9511da177e4SLinus Torvalds .setsockopt = raw_setsockopt, 9521da177e4SLinus Torvalds .getsockopt = raw_getsockopt, 9531da177e4SLinus Torvalds .sendmsg = raw_sendmsg, 9541da177e4SLinus Torvalds .recvmsg = raw_recvmsg, 9551da177e4SLinus Torvalds .bind = raw_bind, 9561da177e4SLinus Torvalds .backlog_rcv = raw_rcv_skb, 9578141ed9fSSteffen Klassert .release_cb = ip4_datagram_release_cb, 958fc8717baSPavel Emelyanov .hash = raw_hash_sk, 959fc8717baSPavel Emelyanov .unhash = raw_unhash_sk, 9601da177e4SLinus Torvalds .obj_size = sizeof(struct raw_sock), 9618c2bc895SDavid Windsor .useroffset = offsetof(struct raw_sock, filter), 9628c2bc895SDavid Windsor .usersize = sizeof_field(struct raw_sock, filter), 963fc8717baSPavel Emelyanov .h.raw_hash = &raw_v4_hashinfo, 964543d9cfeSArnaldo Carvalho de Melo #ifdef CONFIG_COMPAT 965709b46e8SEric W. Biederman .compat_ioctl = compat_raw_ioctl, 966543d9cfeSArnaldo Carvalho de Melo #endif 967432490f9SCyrill Gorcunov .diag_destroy = raw_abort, 9681da177e4SLinus Torvalds }; 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds #ifdef CONFIG_PROC_FS 9711da177e4SLinus Torvalds static struct sock *raw_get_first(struct seq_file *seq) 9721da177e4SLinus Torvalds { 9731da177e4SLinus Torvalds struct sock *sk; 974*359745d7SMuchun Song struct raw_hashinfo *h = pde_data(file_inode(seq->file)); 9751da177e4SLinus Torvalds struct raw_iter_state *state = raw_seq_private(seq); 9761da177e4SLinus Torvalds 977b673e4dfSPavel Emelyanov for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; 978b673e4dfSPavel Emelyanov ++state->bucket) { 97993cb5a1fSChristoph Hellwig sk_for_each(sk, &h->ht[state->bucket]) 9801218854aSYOSHIFUJI Hideaki if (sock_net(sk) == seq_file_net(seq)) 9811da177e4SLinus Torvalds goto found; 9821da177e4SLinus Torvalds } 9831da177e4SLinus Torvalds sk = NULL; 9841da177e4SLinus Torvalds found: 9851da177e4SLinus Torvalds return sk; 9861da177e4SLinus Torvalds } 9871da177e4SLinus Torvalds 9881da177e4SLinus Torvalds static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) 9891da177e4SLinus Torvalds { 990*359745d7SMuchun Song struct raw_hashinfo *h = pde_data(file_inode(seq->file)); 9911da177e4SLinus Torvalds struct raw_iter_state *state = raw_seq_private(seq); 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds do { 9941da177e4SLinus Torvalds sk = sk_next(sk); 9951da177e4SLinus Torvalds try_again: 9961da177e4SLinus Torvalds ; 9971218854aSYOSHIFUJI Hideaki } while (sk && sock_net(sk) != seq_file_net(seq)); 9981da177e4SLinus Torvalds 999b673e4dfSPavel Emelyanov if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { 100093cb5a1fSChristoph Hellwig sk = sk_head(&h->ht[state->bucket]); 10011da177e4SLinus Torvalds goto try_again; 10021da177e4SLinus Torvalds } 10031da177e4SLinus Torvalds return sk; 10041da177e4SLinus Torvalds } 10051da177e4SLinus Torvalds 10061da177e4SLinus Torvalds static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) 10071da177e4SLinus Torvalds { 10081da177e4SLinus Torvalds struct sock *sk = raw_get_first(seq); 10091da177e4SLinus Torvalds 10101da177e4SLinus Torvalds if (sk) 10111da177e4SLinus Torvalds while (pos && (sk = raw_get_next(seq, sk)) != NULL) 10121da177e4SLinus Torvalds --pos; 10131da177e4SLinus Torvalds return pos ? NULL : sk; 10141da177e4SLinus Torvalds } 10151da177e4SLinus Torvalds 101642a73808SPavel Emelyanov void *raw_seq_start(struct seq_file *seq, loff_t *pos) 10170d8a42c9SJules Irenge __acquires(&h->lock) 10181da177e4SLinus Torvalds { 1019*359745d7SMuchun Song struct raw_hashinfo *h = pde_data(file_inode(seq->file)); 102042a73808SPavel Emelyanov 102193cb5a1fSChristoph Hellwig read_lock(&h->lock); 10221da177e4SLinus Torvalds return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; 10231da177e4SLinus Torvalds } 102442a73808SPavel Emelyanov EXPORT_SYMBOL_GPL(raw_seq_start); 10251da177e4SLinus Torvalds 102642a73808SPavel Emelyanov void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) 10271da177e4SLinus Torvalds { 10281da177e4SLinus Torvalds struct sock *sk; 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds if (v == SEQ_START_TOKEN) 10311da177e4SLinus Torvalds sk = raw_get_first(seq); 10321da177e4SLinus Torvalds else 10331da177e4SLinus Torvalds sk = raw_get_next(seq, v); 10341da177e4SLinus Torvalds ++*pos; 10351da177e4SLinus Torvalds return sk; 10361da177e4SLinus Torvalds } 103742a73808SPavel Emelyanov EXPORT_SYMBOL_GPL(raw_seq_next); 10381da177e4SLinus Torvalds 103942a73808SPavel Emelyanov void raw_seq_stop(struct seq_file *seq, void *v) 10400d8a42c9SJules Irenge __releases(&h->lock) 10411da177e4SLinus Torvalds { 1042*359745d7SMuchun Song struct raw_hashinfo *h = pde_data(file_inode(seq->file)); 104342a73808SPavel Emelyanov 104493cb5a1fSChristoph Hellwig read_unlock(&h->lock); 10451da177e4SLinus Torvalds } 104642a73808SPavel Emelyanov EXPORT_SYMBOL_GPL(raw_seq_stop); 10471da177e4SLinus Torvalds 10488cd850efSDenis V. Lunev static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) 10491da177e4SLinus Torvalds { 10501da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sp); 1051c720c7e8SEric Dumazet __be32 dest = inet->inet_daddr, 1052c720c7e8SEric Dumazet src = inet->inet_rcv_saddr; 10531da177e4SLinus Torvalds __u16 destp = 0, 1054c720c7e8SEric Dumazet srcp = inet->inet_num; 10551da177e4SLinus Torvalds 10568cd850efSDenis V. Lunev seq_printf(seq, "%4d: %08X:%04X %08X:%04X" 1057ea9a0379SPatrick Talbert " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %u\n", 10581da177e4SLinus Torvalds i, src, srcp, dest, destp, sp->sk_state, 105931e6d363SEric Dumazet sk_wmem_alloc_get(sp), 106031e6d363SEric Dumazet sk_rmem_alloc_get(sp), 1061a7cb5a49SEric W. Biederman 0, 0L, 0, 1062a7cb5a49SEric W. Biederman from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), 1063a7cb5a49SEric W. Biederman 0, sock_i_ino(sp), 106441c6d650SReshetova, Elena refcount_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); 10651da177e4SLinus Torvalds } 10661da177e4SLinus Torvalds 10671da177e4SLinus Torvalds static int raw_seq_show(struct seq_file *seq, void *v) 10681da177e4SLinus Torvalds { 10691da177e4SLinus Torvalds if (v == SEQ_START_TOKEN) 10708cd850efSDenis V. Lunev seq_printf(seq, " sl local_address rem_address st tx_queue " 10711da177e4SLinus Torvalds "rx_queue tr tm->when retrnsmt uid timeout " 1072cb61cb9bSEric Dumazet "inode ref pointer drops\n"); 10738cd850efSDenis V. Lunev else 10748cd850efSDenis V. Lunev raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); 10751da177e4SLinus Torvalds return 0; 10761da177e4SLinus Torvalds } 10771da177e4SLinus Torvalds 1078f690808eSStephen Hemminger static const struct seq_operations raw_seq_ops = { 10791da177e4SLinus Torvalds .start = raw_seq_start, 10801da177e4SLinus Torvalds .next = raw_seq_next, 10811da177e4SLinus Torvalds .stop = raw_seq_stop, 10821da177e4SLinus Torvalds .show = raw_seq_show, 10831da177e4SLinus Torvalds }; 10841da177e4SLinus Torvalds 1085a308da16SPavel Emelyanov static __net_init int raw_init_net(struct net *net) 1086a308da16SPavel Emelyanov { 1087c3506372SChristoph Hellwig if (!proc_create_net_data("raw", 0444, net->proc_net, &raw_seq_ops, 1088c3506372SChristoph Hellwig sizeof(struct raw_iter_state), &raw_v4_hashinfo)) 1089a308da16SPavel Emelyanov return -ENOMEM; 1090a308da16SPavel Emelyanov 1091a308da16SPavel Emelyanov return 0; 1092a308da16SPavel Emelyanov } 1093a308da16SPavel Emelyanov 1094a308da16SPavel Emelyanov static __net_exit void raw_exit_net(struct net *net) 1095a308da16SPavel Emelyanov { 1096ece31ffdSGao feng remove_proc_entry("raw", net->proc_net); 1097a308da16SPavel Emelyanov } 1098a308da16SPavel Emelyanov 1099a308da16SPavel Emelyanov static __net_initdata struct pernet_operations raw_net_ops = { 1100a308da16SPavel Emelyanov .init = raw_init_net, 1101a308da16SPavel Emelyanov .exit = raw_exit_net, 1102a308da16SPavel Emelyanov }; 1103a308da16SPavel Emelyanov 11041da177e4SLinus Torvalds int __init raw_proc_init(void) 11051da177e4SLinus Torvalds { 1106a308da16SPavel Emelyanov return register_pernet_subsys(&raw_net_ops); 11071da177e4SLinus Torvalds } 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds void __init raw_proc_exit(void) 11101da177e4SLinus Torvalds { 1111a308da16SPavel Emelyanov unregister_pernet_subsys(&raw_net_ops); 11121da177e4SLinus Torvalds } 111386d1d8b7SDavid Ahern #endif /* CONFIG_PROC_FS */ 11146897445fSMike Manning 11156897445fSMike Manning static void raw_sysctl_init_net(struct net *net) 11166897445fSMike Manning { 11176897445fSMike Manning #ifdef CONFIG_NET_L3_MASTER_DEV 11186897445fSMike Manning net->ipv4.sysctl_raw_l3mdev_accept = 1; 11196897445fSMike Manning #endif 11206897445fSMike Manning } 11216897445fSMike Manning 11226897445fSMike Manning static int __net_init raw_sysctl_init(struct net *net) 11236897445fSMike Manning { 11246897445fSMike Manning raw_sysctl_init_net(net); 11256897445fSMike Manning return 0; 11266897445fSMike Manning } 11276897445fSMike Manning 11286897445fSMike Manning static struct pernet_operations __net_initdata raw_sysctl_ops = { 11296897445fSMike Manning .init = raw_sysctl_init, 11306897445fSMike Manning }; 11316897445fSMike Manning 11326897445fSMike Manning void __init raw_init(void) 11336897445fSMike Manning { 11346897445fSMike Manning raw_sysctl_init_net(&init_net); 11356897445fSMike Manning if (register_pernet_subsys(&raw_sysctl_ops)) 11366897445fSMike Manning panic("RAW: failed to init sysctl parameters.\n"); 11376897445fSMike Manning } 1138