11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * common UDP/RAW code 31da177e4SLinus Torvalds * Linux INET6 implementation 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Authors: 61da177e4SLinus Torvalds * Pedro Roque <roque@di.fc.ul.pt> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 91da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 101da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 111da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 121da177e4SLinus Torvalds */ 131da177e4SLinus Torvalds 144fc268d2SRandy Dunlap #include <linux/capability.h> 151da177e4SLinus Torvalds #include <linux/errno.h> 161da177e4SLinus Torvalds #include <linux/types.h> 171da177e4SLinus Torvalds #include <linux/kernel.h> 181da177e4SLinus Torvalds #include <linux/interrupt.h> 191da177e4SLinus Torvalds #include <linux/socket.h> 201da177e4SLinus Torvalds #include <linux/sockios.h> 211da177e4SLinus Torvalds #include <linux/in6.h> 221da177e4SLinus Torvalds #include <linux/ipv6.h> 231da177e4SLinus Torvalds #include <linux/route.h> 245a0e3ad6STejun Heo #include <linux/slab.h> 25a495f836SChris Elston #include <linux/export.h> 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds #include <net/ipv6.h> 281da177e4SLinus Torvalds #include <net/ndisc.h> 291da177e4SLinus Torvalds #include <net/addrconf.h> 301da177e4SLinus Torvalds #include <net/transp_v6.h> 311da177e4SLinus Torvalds #include <net/ip6_route.h> 32c752f073SArnaldo Carvalho de Melo #include <net/tcp_states.h> 33e7219858SYOSHIFUJI Hideaki / 吉藤英明 #include <net/dsfield.h> 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds #include <linux/errqueue.h> 361da177e4SLinus Torvalds #include <asm/uaccess.h> 371da177e4SLinus Torvalds 38a50feda5SEric Dumazet static bool ipv6_mapped_addr_any(const struct in6_addr *a) 39c15fea2dSMax Matveev { 40a50feda5SEric Dumazet return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0); 41c15fea2dSMax Matveev } 42c15fea2dSMax Matveev 4380fbdb20SMartin KaFai Lau static void ip6_datagram_flow_key_init(struct flowi6 *fl6, struct sock *sk) 4480fbdb20SMartin KaFai Lau { 4580fbdb20SMartin KaFai Lau struct inet_sock *inet = inet_sk(sk); 4680fbdb20SMartin KaFai Lau struct ipv6_pinfo *np = inet6_sk(sk); 4780fbdb20SMartin KaFai Lau 4880fbdb20SMartin KaFai Lau memset(fl6, 0, sizeof(*fl6)); 4980fbdb20SMartin KaFai Lau fl6->flowi6_proto = sk->sk_protocol; 5080fbdb20SMartin KaFai Lau fl6->daddr = sk->sk_v6_daddr; 5180fbdb20SMartin KaFai Lau fl6->saddr = np->saddr; 5280fbdb20SMartin KaFai Lau fl6->flowi6_oif = sk->sk_bound_dev_if; 5380fbdb20SMartin KaFai Lau fl6->flowi6_mark = sk->sk_mark; 5480fbdb20SMartin KaFai Lau fl6->fl6_dport = inet->inet_dport; 5580fbdb20SMartin KaFai Lau fl6->fl6_sport = inet->inet_sport; 5680fbdb20SMartin KaFai Lau fl6->flowlabel = np->flow_label; 5780fbdb20SMartin KaFai Lau 5880fbdb20SMartin KaFai Lau if (!fl6->flowi6_oif) 5980fbdb20SMartin KaFai Lau fl6->flowi6_oif = np->sticky_pktinfo.ipi6_ifindex; 6080fbdb20SMartin KaFai Lau 6180fbdb20SMartin KaFai Lau if (!fl6->flowi6_oif && ipv6_addr_is_multicast(&fl6->daddr)) 6280fbdb20SMartin KaFai Lau fl6->flowi6_oif = np->mcast_oif; 6380fbdb20SMartin KaFai Lau 6480fbdb20SMartin KaFai Lau security_sk_classify_flow(sk, flowi6_to_flowi(fl6)); 6580fbdb20SMartin KaFai Lau } 6680fbdb20SMartin KaFai Lau 6733c162a9SMartin KaFai Lau int ip6_datagram_dst_update(struct sock *sk, bool fix_sk_saddr) 687e2040dbSMartin KaFai Lau { 697e2040dbSMartin KaFai Lau struct ip6_flowlabel *flowlabel = NULL; 707e2040dbSMartin KaFai Lau struct in6_addr *final_p, final; 717e2040dbSMartin KaFai Lau struct ipv6_txoptions *opt; 727e2040dbSMartin KaFai Lau struct dst_entry *dst; 737e2040dbSMartin KaFai Lau struct inet_sock *inet = inet_sk(sk); 747e2040dbSMartin KaFai Lau struct ipv6_pinfo *np = inet6_sk(sk); 757e2040dbSMartin KaFai Lau struct flowi6 fl6; 767e2040dbSMartin KaFai Lau int err = 0; 777e2040dbSMartin KaFai Lau 787e2040dbSMartin KaFai Lau if (np->sndflow && (np->flow_label & IPV6_FLOWLABEL_MASK)) { 797e2040dbSMartin KaFai Lau flowlabel = fl6_sock_lookup(sk, np->flow_label); 807e2040dbSMartin KaFai Lau if (!flowlabel) 817e2040dbSMartin KaFai Lau return -EINVAL; 827e2040dbSMartin KaFai Lau } 837e2040dbSMartin KaFai Lau ip6_datagram_flow_key_init(&fl6, sk); 847e2040dbSMartin KaFai Lau 857e2040dbSMartin KaFai Lau rcu_read_lock(); 867e2040dbSMartin KaFai Lau opt = flowlabel ? flowlabel->opt : rcu_dereference(np->opt); 877e2040dbSMartin KaFai Lau final_p = fl6_update_dst(&fl6, opt, &final); 887e2040dbSMartin KaFai Lau rcu_read_unlock(); 897e2040dbSMartin KaFai Lau 907e2040dbSMartin KaFai Lau dst = ip6_dst_lookup_flow(sk, &fl6, final_p); 917e2040dbSMartin KaFai Lau if (IS_ERR(dst)) { 927e2040dbSMartin KaFai Lau err = PTR_ERR(dst); 937e2040dbSMartin KaFai Lau goto out; 947e2040dbSMartin KaFai Lau } 957e2040dbSMartin KaFai Lau 9633c162a9SMartin KaFai Lau if (fix_sk_saddr) { 977e2040dbSMartin KaFai Lau if (ipv6_addr_any(&np->saddr)) 987e2040dbSMartin KaFai Lau np->saddr = fl6.saddr; 997e2040dbSMartin KaFai Lau 1007e2040dbSMartin KaFai Lau if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) { 1017e2040dbSMartin KaFai Lau sk->sk_v6_rcv_saddr = fl6.saddr; 1027e2040dbSMartin KaFai Lau inet->inet_rcv_saddr = LOOPBACK4_IPV6; 1037e2040dbSMartin KaFai Lau if (sk->sk_prot->rehash) 1047e2040dbSMartin KaFai Lau sk->sk_prot->rehash(sk); 1057e2040dbSMartin KaFai Lau } 10633c162a9SMartin KaFai Lau } 1077e2040dbSMartin KaFai Lau 1087e2040dbSMartin KaFai Lau ip6_dst_store(sk, dst, 1097e2040dbSMartin KaFai Lau ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ? 1107e2040dbSMartin KaFai Lau &sk->sk_v6_daddr : NULL, 1117e2040dbSMartin KaFai Lau #ifdef CONFIG_IPV6_SUBTREES 1127e2040dbSMartin KaFai Lau ipv6_addr_equal(&fl6.saddr, &np->saddr) ? 1137e2040dbSMartin KaFai Lau &np->saddr : 1147e2040dbSMartin KaFai Lau #endif 1157e2040dbSMartin KaFai Lau NULL); 1167e2040dbSMartin KaFai Lau 1177e2040dbSMartin KaFai Lau out: 1187e2040dbSMartin KaFai Lau fl6_sock_release(flowlabel); 1197e2040dbSMartin KaFai Lau return err; 1207e2040dbSMartin KaFai Lau } 1217e2040dbSMartin KaFai Lau 122e646b657SMartin KaFai Lau void ip6_datagram_release_cb(struct sock *sk) 123e646b657SMartin KaFai Lau { 124e646b657SMartin KaFai Lau struct dst_entry *dst; 125e646b657SMartin KaFai Lau 126e646b657SMartin KaFai Lau if (ipv6_addr_v4mapped(&sk->sk_v6_daddr)) 127e646b657SMartin KaFai Lau return; 128e646b657SMartin KaFai Lau 129e646b657SMartin KaFai Lau rcu_read_lock(); 130e646b657SMartin KaFai Lau dst = __sk_dst_get(sk); 131e646b657SMartin KaFai Lau if (!dst || !dst->obsolete || 132e646b657SMartin KaFai Lau dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) { 133e646b657SMartin KaFai Lau rcu_read_unlock(); 134e646b657SMartin KaFai Lau return; 135e646b657SMartin KaFai Lau } 136e646b657SMartin KaFai Lau rcu_read_unlock(); 137e646b657SMartin KaFai Lau 138e646b657SMartin KaFai Lau ip6_datagram_dst_update(sk, false); 139e646b657SMartin KaFai Lau } 140e646b657SMartin KaFai Lau EXPORT_SYMBOL_GPL(ip6_datagram_release_cb); 141e646b657SMartin KaFai Lau 14203645a11SEric Dumazet static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) 1431da177e4SLinus Torvalds { 1441da177e4SLinus Torvalds struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr; 1451da177e4SLinus Torvalds struct inet_sock *inet = inet_sk(sk); 1461da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 1477e2040dbSMartin KaFai Lau struct in6_addr *daddr; 1481da177e4SLinus Torvalds int addr_type; 1491da177e4SLinus Torvalds int err; 15080fbdb20SMartin KaFai Lau __be32 fl6_flowlabel = 0; 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds if (usin->sin6_family == AF_INET) { 1531da177e4SLinus Torvalds if (__ipv6_only_sock(sk)) 1541da177e4SLinus Torvalds return -EAFNOSUPPORT; 15503645a11SEric Dumazet err = __ip4_datagram_connect(sk, uaddr, addr_len); 1561da177e4SLinus Torvalds goto ipv4_connected; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds if (addr_len < SIN6_LEN_RFC2133) 1601da177e4SLinus Torvalds return -EINVAL; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds if (usin->sin6_family != AF_INET6) 1631da177e4SLinus Torvalds return -EAFNOSUPPORT; 1641da177e4SLinus Torvalds 1657e2040dbSMartin KaFai Lau if (np->sndflow) 16680fbdb20SMartin KaFai Lau fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds addr_type = ipv6_addr_type(&usin->sin6_addr); 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_ANY) { 1711da177e4SLinus Torvalds /* 1721da177e4SLinus Torvalds * connect to self 1731da177e4SLinus Torvalds */ 1741da177e4SLinus Torvalds usin->sin6_addr.s6_addr[15] = 0x01; 1751da177e4SLinus Torvalds } 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds daddr = &usin->sin6_addr; 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds if (addr_type == IPV6_ADDR_MAPPED) { 1801da177e4SLinus Torvalds struct sockaddr_in sin; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds if (__ipv6_only_sock(sk)) { 1831da177e4SLinus Torvalds err = -ENETUNREACH; 1841da177e4SLinus Torvalds goto out; 1851da177e4SLinus Torvalds } 1861da177e4SLinus Torvalds sin.sin_family = AF_INET; 1871da177e4SLinus Torvalds sin.sin_addr.s_addr = daddr->s6_addr32[3]; 1881da177e4SLinus Torvalds sin.sin_port = usin->sin6_port; 1891da177e4SLinus Torvalds 19003645a11SEric Dumazet err = __ip4_datagram_connect(sk, 1911da177e4SLinus Torvalds (struct sockaddr *) &sin, 1921da177e4SLinus Torvalds sizeof(sin)); 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds ipv4_connected: 1951da177e4SLinus Torvalds if (err) 1961da177e4SLinus Torvalds goto out; 1971da177e4SLinus Torvalds 198efe4208fSEric Dumazet ipv6_addr_set_v4mapped(inet->inet_daddr, &sk->sk_v6_daddr); 1991da177e4SLinus Torvalds 200c15fea2dSMax Matveev if (ipv6_addr_any(&np->saddr) || 201c15fea2dSMax Matveev ipv6_mapped_addr_any(&np->saddr)) 202c720c7e8SEric Dumazet ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr); 2031da177e4SLinus Torvalds 204efe4208fSEric Dumazet if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) || 205efe4208fSEric Dumazet ipv6_mapped_addr_any(&sk->sk_v6_rcv_saddr)) { 206c720c7e8SEric Dumazet ipv6_addr_set_v4mapped(inet->inet_rcv_saddr, 207efe4208fSEric Dumazet &sk->sk_v6_rcv_saddr); 208719f8358SEric Dumazet if (sk->sk_prot->rehash) 209719f8358SEric Dumazet sk->sk_prot->rehash(sk); 210719f8358SEric Dumazet } 211b301e82cSBrian Haley 2121da177e4SLinus Torvalds goto out; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 215842df073SHannes Frederic Sowa if (__ipv6_addr_needs_scope_id(addr_type)) { 2161da177e4SLinus Torvalds if (addr_len >= sizeof(struct sockaddr_in6) && 2171da177e4SLinus Torvalds usin->sin6_scope_id) { 2181da177e4SLinus Torvalds if (sk->sk_bound_dev_if && 2191da177e4SLinus Torvalds sk->sk_bound_dev_if != usin->sin6_scope_id) { 2201da177e4SLinus Torvalds err = -EINVAL; 2211da177e4SLinus Torvalds goto out; 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds sk->sk_bound_dev_if = usin->sin6_scope_id; 2241da177e4SLinus Torvalds } 2251da177e4SLinus Torvalds 2261ac4f008SBrian Haley if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST)) 2271ac4f008SBrian Haley sk->sk_bound_dev_if = np->mcast_oif; 2281ac4f008SBrian Haley 2291da177e4SLinus Torvalds /* Connect to link-local address requires an interface */ 2301da177e4SLinus Torvalds if (!sk->sk_bound_dev_if) { 2311da177e4SLinus Torvalds err = -EINVAL; 2321da177e4SLinus Torvalds goto out; 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 236efe4208fSEric Dumazet sk->sk_v6_daddr = *daddr; 23780fbdb20SMartin KaFai Lau np->flow_label = fl6_flowlabel; 2381da177e4SLinus Torvalds 239c720c7e8SEric Dumazet inet->inet_dport = usin->sin6_port; 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds /* 2421da177e4SLinus Torvalds * Check for a route to destination an obtain the 2431da177e4SLinus Torvalds * destination cache for it. 2441da177e4SLinus Torvalds */ 2451da177e4SLinus Torvalds 24633c162a9SMartin KaFai Lau err = ip6_datagram_dst_update(sk, true); 2477e2040dbSMartin KaFai Lau if (err) 2481da177e4SLinus Torvalds goto out; 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds sk->sk_state = TCP_ESTABLISHED; 251877d1f62STom Herbert sk_set_txhash(sk); 2521da177e4SLinus Torvalds out: 2531da177e4SLinus Torvalds return err; 2541da177e4SLinus Torvalds } 25503645a11SEric Dumazet 25603645a11SEric Dumazet int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) 25703645a11SEric Dumazet { 25803645a11SEric Dumazet int res; 25903645a11SEric Dumazet 26003645a11SEric Dumazet lock_sock(sk); 26103645a11SEric Dumazet res = __ip6_datagram_connect(sk, uaddr, addr_len); 26203645a11SEric Dumazet release_sock(sk); 26303645a11SEric Dumazet return res; 26403645a11SEric Dumazet } 265a495f836SChris Elston EXPORT_SYMBOL_GPL(ip6_datagram_connect); 2661da177e4SLinus Torvalds 26782b276cdSHannes Frederic Sowa int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr, 26882b276cdSHannes Frederic Sowa int addr_len) 26982b276cdSHannes Frederic Sowa { 27082b276cdSHannes Frederic Sowa DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, uaddr); 27182b276cdSHannes Frederic Sowa if (sin6->sin6_family != AF_INET6) 27282b276cdSHannes Frederic Sowa return -EAFNOSUPPORT; 27382b276cdSHannes Frederic Sowa return ip6_datagram_connect(sk, uaddr, addr_len); 27482b276cdSHannes Frederic Sowa } 27582b276cdSHannes Frederic Sowa EXPORT_SYMBOL_GPL(ip6_datagram_connect_v6_only); 27682b276cdSHannes Frederic Sowa 2771da177e4SLinus Torvalds void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, 278e69a4adcSAl Viro __be16 port, u32 info, u8 *payload) 2791da177e4SLinus Torvalds { 2801da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 281cc70ab26SArnaldo Carvalho de Melo struct icmp6hdr *icmph = icmp6_hdr(skb); 2821da177e4SLinus Torvalds struct sock_exterr_skb *serr; 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds if (!np->recverr) 2851da177e4SLinus Torvalds return; 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds skb = skb_clone(skb, GFP_ATOMIC); 2881da177e4SLinus Torvalds if (!skb) 2891da177e4SLinus Torvalds return; 2901da177e4SLinus Torvalds 291d40a4de0SBrian Haley skb->protocol = htons(ETH_P_IPV6); 292d40a4de0SBrian Haley 2931da177e4SLinus Torvalds serr = SKB_EXT_ERR(skb); 2941da177e4SLinus Torvalds serr->ee.ee_errno = err; 2951da177e4SLinus Torvalds serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6; 2961da177e4SLinus Torvalds serr->ee.ee_type = icmph->icmp6_type; 2971da177e4SLinus Torvalds serr->ee.ee_code = icmph->icmp6_code; 2981da177e4SLinus Torvalds serr->ee.ee_pad = 0; 2991da177e4SLinus Torvalds serr->ee.ee_info = info; 3001da177e4SLinus Torvalds serr->ee.ee_data = 0; 301d56f90a7SArnaldo Carvalho de Melo serr->addr_offset = (u8 *)&(((struct ipv6hdr *)(icmph + 1))->daddr) - 302d56f90a7SArnaldo Carvalho de Melo skb_network_header(skb); 3031da177e4SLinus Torvalds serr->port = port; 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds __skb_pull(skb, payload - skb->data); 306bd82393cSArnaldo Carvalho de Melo skb_reset_transport_header(skb); 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds if (sock_queue_err_skb(sk, skb)) 3091da177e4SLinus Torvalds kfree_skb(skb); 3101da177e4SLinus Torvalds } 3111da177e4SLinus Torvalds 3124c9483b2SDavid S. Miller void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info) 3131da177e4SLinus Torvalds { 3141c1e9d2bSEric Dumazet const struct ipv6_pinfo *np = inet6_sk(sk); 3151da177e4SLinus Torvalds struct sock_exterr_skb *serr; 3161da177e4SLinus Torvalds struct ipv6hdr *iph; 3171da177e4SLinus Torvalds struct sk_buff *skb; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds if (!np->recverr) 3201da177e4SLinus Torvalds return; 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); 3231da177e4SLinus Torvalds if (!skb) 3241da177e4SLinus Torvalds return; 3251da177e4SLinus Torvalds 326d40a4de0SBrian Haley skb->protocol = htons(ETH_P_IPV6); 327d40a4de0SBrian Haley 3281ced98e8SArnaldo Carvalho de Melo skb_put(skb, sizeof(struct ipv6hdr)); 3291ced98e8SArnaldo Carvalho de Melo skb_reset_network_header(skb); 3300660e03fSArnaldo Carvalho de Melo iph = ipv6_hdr(skb); 3314e3fd7a0SAlexey Dobriyan iph->daddr = fl6->daddr; 3321da177e4SLinus Torvalds 3331da177e4SLinus Torvalds serr = SKB_EXT_ERR(skb); 3341da177e4SLinus Torvalds serr->ee.ee_errno = err; 3351da177e4SLinus Torvalds serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL; 3361da177e4SLinus Torvalds serr->ee.ee_type = 0; 3371da177e4SLinus Torvalds serr->ee.ee_code = 0; 3381da177e4SLinus Torvalds serr->ee.ee_pad = 0; 3391da177e4SLinus Torvalds serr->ee.ee_info = info; 3401da177e4SLinus Torvalds serr->ee.ee_data = 0; 341d56f90a7SArnaldo Carvalho de Melo serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb); 3421958b856SDavid S. Miller serr->port = fl6->fl6_dport; 3431da177e4SLinus Torvalds 34427a884dcSArnaldo Carvalho de Melo __skb_pull(skb, skb_tail_pointer(skb) - skb->data); 345bd82393cSArnaldo Carvalho de Melo skb_reset_transport_header(skb); 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds if (sock_queue_err_skb(sk, skb)) 3481da177e4SLinus Torvalds kfree_skb(skb); 3491da177e4SLinus Torvalds } 3501da177e4SLinus Torvalds 3514c9483b2SDavid S. Miller void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu) 3524b340ae2SBrian Haley { 3534b340ae2SBrian Haley struct ipv6_pinfo *np = inet6_sk(sk); 3544b340ae2SBrian Haley struct ipv6hdr *iph; 3554b340ae2SBrian Haley struct sk_buff *skb; 3564b340ae2SBrian Haley struct ip6_mtuinfo *mtu_info; 3574b340ae2SBrian Haley 3584b340ae2SBrian Haley if (!np->rxopt.bits.rxpmtu) 3594b340ae2SBrian Haley return; 3604b340ae2SBrian Haley 3614b340ae2SBrian Haley skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); 3624b340ae2SBrian Haley if (!skb) 3634b340ae2SBrian Haley return; 3644b340ae2SBrian Haley 3654b340ae2SBrian Haley skb_put(skb, sizeof(struct ipv6hdr)); 3664b340ae2SBrian Haley skb_reset_network_header(skb); 3674b340ae2SBrian Haley iph = ipv6_hdr(skb); 3684e3fd7a0SAlexey Dobriyan iph->daddr = fl6->daddr; 3694b340ae2SBrian Haley 3704b340ae2SBrian Haley mtu_info = IP6CBMTU(skb); 3714b340ae2SBrian Haley 3724b340ae2SBrian Haley mtu_info->ip6m_mtu = mtu; 3734b340ae2SBrian Haley mtu_info->ip6m_addr.sin6_family = AF_INET6; 3744b340ae2SBrian Haley mtu_info->ip6m_addr.sin6_port = 0; 3754b340ae2SBrian Haley mtu_info->ip6m_addr.sin6_flowinfo = 0; 3764c9483b2SDavid S. Miller mtu_info->ip6m_addr.sin6_scope_id = fl6->flowi6_oif; 3774e3fd7a0SAlexey Dobriyan mtu_info->ip6m_addr.sin6_addr = ipv6_hdr(skb)->daddr; 3784b340ae2SBrian Haley 3794b340ae2SBrian Haley __skb_pull(skb, skb_tail_pointer(skb) - skb->data); 3804b340ae2SBrian Haley skb_reset_transport_header(skb); 3814b340ae2SBrian Haley 3824b340ae2SBrian Haley skb = xchg(&np->rxpmtu, skb); 3834b340ae2SBrian Haley kfree_skb(skb); 3844b340ae2SBrian Haley } 3854b340ae2SBrian Haley 38634b99df4SJulian Anastasov /* For some errors we have valid addr_offset even with zero payload and 38734b99df4SJulian Anastasov * zero port. Also, addr_offset should be supported if port is set. 38834b99df4SJulian Anastasov */ 38934b99df4SJulian Anastasov static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr) 39034b99df4SJulian Anastasov { 39134b99df4SJulian Anastasov return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 || 39234b99df4SJulian Anastasov serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || 39334b99df4SJulian Anastasov serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port; 39434b99df4SJulian Anastasov } 39534b99df4SJulian Anastasov 396c247f053SWillem de Bruijn /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL. 397c247f053SWillem de Bruijn * 398c247f053SWillem de Bruijn * At one point, excluding local errors was a quick test to identify icmp/icmp6 399c247f053SWillem de Bruijn * errors. This is no longer true, but the test remained, so the v6 stack, 400c247f053SWillem de Bruijn * unlike v4, also honors cmsg requests on all wifi and timestamp errors. 401c247f053SWillem de Bruijn * 402c247f053SWillem de Bruijn * Timestamp code paths do not initialize the fields expected by cmsg: 403c247f053SWillem de Bruijn * the PKTINFO fields in skb->cb[]. Fill those in here. 404c247f053SWillem de Bruijn */ 405c247f053SWillem de Bruijn static bool ip6_datagram_support_cmsg(struct sk_buff *skb, 406c247f053SWillem de Bruijn struct sock_exterr_skb *serr) 407829ae9d6SWillem de Bruijn { 408c247f053SWillem de Bruijn if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || 409c247f053SWillem de Bruijn serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) 410c247f053SWillem de Bruijn return true; 411c247f053SWillem de Bruijn 412c247f053SWillem de Bruijn if (serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL) 413c247f053SWillem de Bruijn return false; 414c247f053SWillem de Bruijn 415c247f053SWillem de Bruijn if (!skb->dev) 416c247f053SWillem de Bruijn return false; 417829ae9d6SWillem de Bruijn 418829ae9d6SWillem de Bruijn if (skb->protocol == htons(ETH_P_IPV6)) 419c247f053SWillem de Bruijn IP6CB(skb)->iif = skb->dev->ifindex; 420829ae9d6SWillem de Bruijn else 421c247f053SWillem de Bruijn PKTINFO_SKB_CB(skb)->ipi_ifindex = skb->dev->ifindex; 422c247f053SWillem de Bruijn 423c247f053SWillem de Bruijn return true; 424829ae9d6SWillem de Bruijn } 425829ae9d6SWillem de Bruijn 4261da177e4SLinus Torvalds /* 4271da177e4SLinus Torvalds * Handle MSG_ERRQUEUE 4281da177e4SLinus Torvalds */ 42985fbaa75SHannes Frederic Sowa int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) 4301da177e4SLinus Torvalds { 4311da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 4321da177e4SLinus Torvalds struct sock_exterr_skb *serr; 433364a9e93SWillem de Bruijn struct sk_buff *skb; 434342dfc30SSteffen Hurrle DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); 4351da177e4SLinus Torvalds struct { 4361da177e4SLinus Torvalds struct sock_extended_err ee; 4371da177e4SLinus Torvalds struct sockaddr_in6 offender; 4381da177e4SLinus Torvalds } errhdr; 4391da177e4SLinus Torvalds int err; 4401da177e4SLinus Torvalds int copied; 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds err = -EAGAIN; 443364a9e93SWillem de Bruijn skb = sock_dequeue_err_skb(sk); 44463159f29SIan Morris if (!skb) 4451da177e4SLinus Torvalds goto out; 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds copied = skb->len; 4481da177e4SLinus Torvalds if (copied > len) { 4491da177e4SLinus Torvalds msg->msg_flags |= MSG_TRUNC; 4501da177e4SLinus Torvalds copied = len; 4511da177e4SLinus Torvalds } 45251f3d02bSDavid S. Miller err = skb_copy_datagram_msg(skb, 0, msg, copied); 453960a2628SEric Dumazet if (unlikely(err)) { 454960a2628SEric Dumazet kfree_skb(skb); 455960a2628SEric Dumazet return err; 456960a2628SEric Dumazet } 4571da177e4SLinus Torvalds sock_recv_timestamp(msg, sk, skb); 4581da177e4SLinus Torvalds 4591da177e4SLinus Torvalds serr = SKB_EXT_ERR(skb); 4601da177e4SLinus Torvalds 46134b99df4SJulian Anastasov if (sin && ipv6_datagram_support_addr(serr)) { 462d56f90a7SArnaldo Carvalho de Melo const unsigned char *nh = skb_network_header(skb); 4631da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 4641da177e4SLinus Torvalds sin->sin6_flowinfo = 0; 4651da177e4SLinus Torvalds sin->sin6_port = serr->port; 466d40a4de0SBrian Haley if (skb->protocol == htons(ETH_P_IPV6)) { 4676c40d100SYOSHIFUJI Hideaki / 吉藤英明 const struct ipv6hdr *ip6h = container_of((struct in6_addr *)(nh + serr->addr_offset), 4686c40d100SYOSHIFUJI Hideaki / 吉藤英明 struct ipv6hdr, daddr); 4696c40d100SYOSHIFUJI Hideaki / 吉藤英明 sin->sin6_addr = ip6h->daddr; 4701da177e4SLinus Torvalds if (np->sndflow) 4716502ca52SYOSHIFUJI Hideaki / 吉藤英明 sin->sin6_flowinfo = ip6_flowinfo(ip6h); 472842df073SHannes Frederic Sowa sin->sin6_scope_id = 473842df073SHannes Frederic Sowa ipv6_iface_scope_id(&sin->sin6_addr, 474842df073SHannes Frederic Sowa IP6CB(skb)->iif); 4751da177e4SLinus Torvalds } else { 476b301e82cSBrian Haley ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset), 477b301e82cSBrian Haley &sin->sin6_addr); 478842df073SHannes Frederic Sowa sin->sin6_scope_id = 0; 4791da177e4SLinus Torvalds } 48085fbaa75SHannes Frederic Sowa *addr_len = sizeof(*sin); 4811da177e4SLinus Torvalds } 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err)); 4841da177e4SLinus Torvalds sin = &errhdr.offender; 485f812116bSWillem de Bruijn memset(sin, 0, sizeof(*sin)); 486c247f053SWillem de Bruijn 487c247f053SWillem de Bruijn if (ip6_datagram_support_cmsg(skb, serr)) { 4881da177e4SLinus Torvalds sin->sin6_family = AF_INET6; 489c247f053SWillem de Bruijn if (np->rxopt.all) 4904b261c75SHannes Frederic Sowa ip6_datagram_recv_common_ctl(sk, msg, skb); 491d40a4de0SBrian Haley if (skb->protocol == htons(ETH_P_IPV6)) { 4924e3fd7a0SAlexey Dobriyan sin->sin6_addr = ipv6_hdr(skb)->saddr; 4931da177e4SLinus Torvalds if (np->rxopt.all) 4944b261c75SHannes Frederic Sowa ip6_datagram_recv_specific_ctl(sk, msg, skb); 495842df073SHannes Frederic Sowa sin->sin6_scope_id = 496842df073SHannes Frederic Sowa ipv6_iface_scope_id(&sin->sin6_addr, 497842df073SHannes Frederic Sowa IP6CB(skb)->iif); 4981da177e4SLinus Torvalds } else { 499b301e82cSBrian Haley ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr, 500b301e82cSBrian Haley &sin->sin6_addr); 501f812116bSWillem de Bruijn if (inet_sk(sk)->cmsg_flags) 5021da177e4SLinus Torvalds ip_cmsg_recv(msg, skb); 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds } 5051da177e4SLinus Torvalds 5061da177e4SLinus Torvalds put_cmsg(msg, SOL_IPV6, IPV6_RECVERR, sizeof(errhdr), &errhdr); 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds /* Now we could try to dump offended packet options */ 5091da177e4SLinus Torvalds 5101da177e4SLinus Torvalds msg->msg_flags |= MSG_ERRQUEUE; 5111da177e4SLinus Torvalds err = copied; 5121da177e4SLinus Torvalds 513960a2628SEric Dumazet consume_skb(skb); 5141da177e4SLinus Torvalds out: 5151da177e4SLinus Torvalds return err; 5161da177e4SLinus Torvalds } 517a495f836SChris Elston EXPORT_SYMBOL_GPL(ipv6_recv_error); 5181da177e4SLinus Torvalds 5194b340ae2SBrian Haley /* 5204b340ae2SBrian Haley * Handle IPV6_RECVPATHMTU 5214b340ae2SBrian Haley */ 52285fbaa75SHannes Frederic Sowa int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len, 52385fbaa75SHannes Frederic Sowa int *addr_len) 5244b340ae2SBrian Haley { 5254b340ae2SBrian Haley struct ipv6_pinfo *np = inet6_sk(sk); 5264b340ae2SBrian Haley struct sk_buff *skb; 5274b340ae2SBrian Haley struct ip6_mtuinfo mtu_info; 528342dfc30SSteffen Hurrle DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); 5294b340ae2SBrian Haley int err; 5304b340ae2SBrian Haley int copied; 5314b340ae2SBrian Haley 5324b340ae2SBrian Haley err = -EAGAIN; 5334b340ae2SBrian Haley skb = xchg(&np->rxpmtu, NULL); 53463159f29SIan Morris if (!skb) 5354b340ae2SBrian Haley goto out; 5364b340ae2SBrian Haley 5374b340ae2SBrian Haley copied = skb->len; 5384b340ae2SBrian Haley if (copied > len) { 5394b340ae2SBrian Haley msg->msg_flags |= MSG_TRUNC; 5404b340ae2SBrian Haley copied = len; 5414b340ae2SBrian Haley } 54251f3d02bSDavid S. Miller err = skb_copy_datagram_msg(skb, 0, msg, copied); 5434b340ae2SBrian Haley if (err) 5444b340ae2SBrian Haley goto out_free_skb; 5454b340ae2SBrian Haley 5464b340ae2SBrian Haley sock_recv_timestamp(msg, sk, skb); 5474b340ae2SBrian Haley 5484b340ae2SBrian Haley memcpy(&mtu_info, IP6CBMTU(skb), sizeof(mtu_info)); 5494b340ae2SBrian Haley 5504b340ae2SBrian Haley if (sin) { 5514b340ae2SBrian Haley sin->sin6_family = AF_INET6; 5524b340ae2SBrian Haley sin->sin6_flowinfo = 0; 5534b340ae2SBrian Haley sin->sin6_port = 0; 5544b340ae2SBrian Haley sin->sin6_scope_id = mtu_info.ip6m_addr.sin6_scope_id; 5554e3fd7a0SAlexey Dobriyan sin->sin6_addr = mtu_info.ip6m_addr.sin6_addr; 55685fbaa75SHannes Frederic Sowa *addr_len = sizeof(*sin); 5574b340ae2SBrian Haley } 5584b340ae2SBrian Haley 5594b340ae2SBrian Haley put_cmsg(msg, SOL_IPV6, IPV6_PATHMTU, sizeof(mtu_info), &mtu_info); 5604b340ae2SBrian Haley 5614b340ae2SBrian Haley err = copied; 5624b340ae2SBrian Haley 5634b340ae2SBrian Haley out_free_skb: 5644b340ae2SBrian Haley kfree_skb(skb); 5654b340ae2SBrian Haley out: 5664b340ae2SBrian Haley return err; 5674b340ae2SBrian Haley } 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds 5704b261c75SHannes Frederic Sowa void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, 5714b261c75SHannes Frederic Sowa struct sk_buff *skb) 5724b261c75SHannes Frederic Sowa { 5734b261c75SHannes Frederic Sowa struct ipv6_pinfo *np = inet6_sk(sk); 5744b261c75SHannes Frederic Sowa bool is_ipv6 = skb->protocol == htons(ETH_P_IPV6); 5754b261c75SHannes Frederic Sowa 5764b261c75SHannes Frederic Sowa if (np->rxopt.bits.rxinfo) { 5774b261c75SHannes Frederic Sowa struct in6_pktinfo src_info; 5784b261c75SHannes Frederic Sowa 5794b261c75SHannes Frederic Sowa if (is_ipv6) { 5804b261c75SHannes Frederic Sowa src_info.ipi6_ifindex = IP6CB(skb)->iif; 5814b261c75SHannes Frederic Sowa src_info.ipi6_addr = ipv6_hdr(skb)->daddr; 5824b261c75SHannes Frederic Sowa } else { 5834b261c75SHannes Frederic Sowa src_info.ipi6_ifindex = 5844b261c75SHannes Frederic Sowa PKTINFO_SKB_CB(skb)->ipi_ifindex; 5854b261c75SHannes Frederic Sowa ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, 5864b261c75SHannes Frederic Sowa &src_info.ipi6_addr); 5874b261c75SHannes Frederic Sowa } 588829ae9d6SWillem de Bruijn 589829ae9d6SWillem de Bruijn if (src_info.ipi6_ifindex >= 0) 590829ae9d6SWillem de Bruijn put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, 591829ae9d6SWillem de Bruijn sizeof(src_info), &src_info); 5924b261c75SHannes Frederic Sowa } 5934b261c75SHannes Frederic Sowa } 5944b261c75SHannes Frederic Sowa 5954b261c75SHannes Frederic Sowa void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, 59673df66f8STom Parkin struct sk_buff *skb) 5971da177e4SLinus Torvalds { 5981da177e4SLinus Torvalds struct ipv6_pinfo *np = inet6_sk(sk); 5991da177e4SLinus Torvalds struct inet6_skb_parm *opt = IP6CB(skb); 600d56f90a7SArnaldo Carvalho de Melo unsigned char *nh = skb_network_header(skb); 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds if (np->rxopt.bits.rxhlim) { 6030660e03fSArnaldo Carvalho de Melo int hlim = ipv6_hdr(skb)->hop_limit; 6041da177e4SLinus Torvalds put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim); 6051da177e4SLinus Torvalds } 6061da177e4SLinus Torvalds 60741a1f8eaSYOSHIFUJI Hideaki if (np->rxopt.bits.rxtclass) { 608e7219858SYOSHIFUJI Hideaki / 吉藤英明 int tclass = ipv6_get_dsfield(ipv6_hdr(skb)); 60941a1f8eaSYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass); 61041a1f8eaSYOSHIFUJI Hideaki } 61141a1f8eaSYOSHIFUJI Hideaki 6126502ca52SYOSHIFUJI Hideaki / 吉藤英明 if (np->rxopt.bits.rxflow) { 6136502ca52SYOSHIFUJI Hideaki / 吉藤英明 __be32 flowinfo = ip6_flowinfo((struct ipv6hdr *)nh); 6146502ca52SYOSHIFUJI Hideaki / 吉藤英明 if (flowinfo) 6151da177e4SLinus Torvalds put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo); 6161da177e4SLinus Torvalds } 617333fad53SYOSHIFUJI Hideaki 618333fad53SYOSHIFUJI Hideaki /* HbH is allowed only once */ 6198b58a398SFlorian Westphal if (np->rxopt.bits.hopopts && (opt->flags & IP6SKB_HOPBYHOP)) { 6208b58a398SFlorian Westphal u8 *ptr = nh + sizeof(struct ipv6hdr); 6211da177e4SLinus Torvalds put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr); 6221da177e4SLinus Torvalds } 623333fad53SYOSHIFUJI Hideaki 624333fad53SYOSHIFUJI Hideaki if (opt->lastopt && 625333fad53SYOSHIFUJI Hideaki (np->rxopt.bits.dstopts || np->rxopt.bits.srcrt)) { 626333fad53SYOSHIFUJI Hideaki /* 627333fad53SYOSHIFUJI Hideaki * Silly enough, but we need to reparse in order to 628333fad53SYOSHIFUJI Hideaki * report extension headers (except for HbH) 629333fad53SYOSHIFUJI Hideaki * in order. 630333fad53SYOSHIFUJI Hideaki * 631333fad53SYOSHIFUJI Hideaki * Also note that IPV6_RECVRTHDRDSTOPTS is NOT 632333fad53SYOSHIFUJI Hideaki * (and WILL NOT be) defined because 633333fad53SYOSHIFUJI Hideaki * IPV6_RECVDSTOPTS is more generic. --yoshfuji 634333fad53SYOSHIFUJI Hideaki */ 635333fad53SYOSHIFUJI Hideaki unsigned int off = sizeof(struct ipv6hdr); 6360660e03fSArnaldo Carvalho de Melo u8 nexthdr = ipv6_hdr(skb)->nexthdr; 637333fad53SYOSHIFUJI Hideaki 638333fad53SYOSHIFUJI Hideaki while (off <= opt->lastopt) { 63995c96174SEric Dumazet unsigned int len; 640d56f90a7SArnaldo Carvalho de Melo u8 *ptr = nh + off; 641333fad53SYOSHIFUJI Hideaki 642333fad53SYOSHIFUJI Hideaki switch (nexthdr) { 643333fad53SYOSHIFUJI Hideaki case IPPROTO_DSTOPTS: 644333fad53SYOSHIFUJI Hideaki nexthdr = ptr[0]; 645333fad53SYOSHIFUJI Hideaki len = (ptr[1] + 1) << 3; 646333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.dstopts) 647333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, len, ptr); 648333fad53SYOSHIFUJI Hideaki break; 649333fad53SYOSHIFUJI Hideaki case IPPROTO_ROUTING: 650333fad53SYOSHIFUJI Hideaki nexthdr = ptr[0]; 651333fad53SYOSHIFUJI Hideaki len = (ptr[1] + 1) << 3; 652333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.srcrt) 653333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, len, ptr); 654333fad53SYOSHIFUJI Hideaki break; 655333fad53SYOSHIFUJI Hideaki case IPPROTO_AH: 656333fad53SYOSHIFUJI Hideaki nexthdr = ptr[0]; 657a3059893SVille Nuorvala len = (ptr[1] + 2) << 2; 658333fad53SYOSHIFUJI Hideaki break; 659333fad53SYOSHIFUJI Hideaki default: 660333fad53SYOSHIFUJI Hideaki nexthdr = ptr[0]; 661333fad53SYOSHIFUJI Hideaki len = (ptr[1] + 1) << 3; 662333fad53SYOSHIFUJI Hideaki break; 663333fad53SYOSHIFUJI Hideaki } 664333fad53SYOSHIFUJI Hideaki 665333fad53SYOSHIFUJI Hideaki off += len; 666333fad53SYOSHIFUJI Hideaki } 667333fad53SYOSHIFUJI Hideaki } 668333fad53SYOSHIFUJI Hideaki 669333fad53SYOSHIFUJI Hideaki /* socket options in old style */ 670333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.rxoinfo) { 671333fad53SYOSHIFUJI Hideaki struct in6_pktinfo src_info; 672333fad53SYOSHIFUJI Hideaki 673333fad53SYOSHIFUJI Hideaki src_info.ipi6_ifindex = opt->iif; 6744e3fd7a0SAlexey Dobriyan src_info.ipi6_addr = ipv6_hdr(skb)->daddr; 675333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info); 676333fad53SYOSHIFUJI Hideaki } 677333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.rxohlim) { 6780660e03fSArnaldo Carvalho de Melo int hlim = ipv6_hdr(skb)->hop_limit; 679333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim); 680333fad53SYOSHIFUJI Hideaki } 6818b58a398SFlorian Westphal if (np->rxopt.bits.ohopopts && (opt->flags & IP6SKB_HOPBYHOP)) { 6828b58a398SFlorian Westphal u8 *ptr = nh + sizeof(struct ipv6hdr); 683333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr); 684333fad53SYOSHIFUJI Hideaki } 685333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.odstopts && opt->dst0) { 686d56f90a7SArnaldo Carvalho de Melo u8 *ptr = nh + opt->dst0; 687333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); 6881da177e4SLinus Torvalds } 689333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.osrcrt && opt->srcrt) { 690d56f90a7SArnaldo Carvalho de Melo struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(nh + opt->srcrt); 691333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr); 6921da177e4SLinus Torvalds } 693333fad53SYOSHIFUJI Hideaki if (np->rxopt.bits.odstopts && opt->dst1) { 694d56f90a7SArnaldo Carvalho de Melo u8 *ptr = nh + opt->dst1; 695333fad53SYOSHIFUJI Hideaki put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); 6961da177e4SLinus Torvalds } 6976c468622SBalazs Scheidler if (np->rxopt.bits.rxorigdstaddr) { 6986c468622SBalazs Scheidler struct sockaddr_in6 sin6; 699747465efSEric Dumazet __be16 *ports = (__be16 *) skb_transport_header(skb); 7006c468622SBalazs Scheidler 7016c468622SBalazs Scheidler if (skb_transport_offset(skb) + 4 <= skb->len) { 7026c468622SBalazs Scheidler /* All current transport protocols have the port numbers in the 7036c468622SBalazs Scheidler * first four bytes of the transport header and this function is 7046c468622SBalazs Scheidler * written with this assumption in mind. 7056c468622SBalazs Scheidler */ 7066c468622SBalazs Scheidler 7076c468622SBalazs Scheidler sin6.sin6_family = AF_INET6; 7084e3fd7a0SAlexey Dobriyan sin6.sin6_addr = ipv6_hdr(skb)->daddr; 7096c468622SBalazs Scheidler sin6.sin6_port = ports[1]; 7106c468622SBalazs Scheidler sin6.sin6_flowinfo = 0; 7113868b7aaSHannes Frederic Sowa sin6.sin6_scope_id = 7123868b7aaSHannes Frederic Sowa ipv6_iface_scope_id(&ipv6_hdr(skb)->daddr, 7133868b7aaSHannes Frederic Sowa opt->iif); 7146c468622SBalazs Scheidler 7156c468622SBalazs Scheidler put_cmsg(msg, SOL_IPV6, IPV6_ORIGDSTADDR, sizeof(sin6), &sin6); 7166c468622SBalazs Scheidler } 7176c468622SBalazs Scheidler } 7184b261c75SHannes Frederic Sowa } 7194b261c75SHannes Frederic Sowa 7204b261c75SHannes Frederic Sowa void ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg, 7214b261c75SHannes Frederic Sowa struct sk_buff *skb) 7224b261c75SHannes Frederic Sowa { 7234b261c75SHannes Frederic Sowa ip6_datagram_recv_common_ctl(sk, msg, skb); 7244b261c75SHannes Frederic Sowa ip6_datagram_recv_specific_ctl(sk, msg, skb); 7251da177e4SLinus Torvalds } 7268e72d37eSTom Parkin EXPORT_SYMBOL_GPL(ip6_datagram_recv_ctl); 7271da177e4SLinus Torvalds 72873df66f8STom Parkin int ip6_datagram_send_ctl(struct net *net, struct sock *sk, 7294c9483b2SDavid S. Miller struct msghdr *msg, struct flowi6 *fl6, 73026879da5SWei Wang struct ipcm6_cookie *ipc6, struct sockcm_cookie *sockc) 7311da177e4SLinus Torvalds { 7321da177e4SLinus Torvalds struct in6_pktinfo *src_info; 7331da177e4SLinus Torvalds struct cmsghdr *cmsg; 7341da177e4SLinus Torvalds struct ipv6_rt_hdr *rthdr; 7351da177e4SLinus Torvalds struct ipv6_opt_hdr *hdr; 73626879da5SWei Wang struct ipv6_txoptions *opt = ipc6->opt; 7371da177e4SLinus Torvalds int len; 7381da177e4SLinus Torvalds int err = 0; 7391da177e4SLinus Torvalds 740f95b414eSGu Zheng for_each_cmsghdr(cmsg, msg) { 7411da177e4SLinus Torvalds int addr_type; 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds if (!CMSG_OK(msg, cmsg)) { 7441da177e4SLinus Torvalds err = -EINVAL; 7451da177e4SLinus Torvalds goto exit_f; 7461da177e4SLinus Torvalds } 7471da177e4SLinus Torvalds 748ad1e46a8SSoheil Hassas Yeganeh if (cmsg->cmsg_level == SOL_SOCKET) { 7492632616bSEric Dumazet err = __sock_cmsg_send(sk, msg, cmsg, sockc); 7502632616bSEric Dumazet if (err) 7512632616bSEric Dumazet return err; 752ad1e46a8SSoheil Hassas Yeganeh continue; 753ad1e46a8SSoheil Hassas Yeganeh } 754ad1e46a8SSoheil Hassas Yeganeh 7551da177e4SLinus Torvalds if (cmsg->cmsg_level != SOL_IPV6) 7561da177e4SLinus Torvalds continue; 7571da177e4SLinus Torvalds 7581da177e4SLinus Torvalds switch (cmsg->cmsg_type) { 7591da177e4SLinus Torvalds case IPV6_PKTINFO: 760333fad53SYOSHIFUJI Hideaki case IPV6_2292PKTINFO: 761187e3838SYOSHIFUJI Hideaki { 762187e3838SYOSHIFUJI Hideaki struct net_device *dev = NULL; 763187e3838SYOSHIFUJI Hideaki 7641da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) { 7651da177e4SLinus Torvalds err = -EINVAL; 7661da177e4SLinus Torvalds goto exit_f; 7671da177e4SLinus Torvalds } 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg); 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds if (src_info->ipi6_ifindex) { 7724c9483b2SDavid S. Miller if (fl6->flowi6_oif && 7734c9483b2SDavid S. Miller src_info->ipi6_ifindex != fl6->flowi6_oif) 7741da177e4SLinus Torvalds return -EINVAL; 7754c9483b2SDavid S. Miller fl6->flowi6_oif = src_info->ipi6_ifindex; 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds 778187e3838SYOSHIFUJI Hideaki addr_type = __ipv6_addr_type(&src_info->ipi6_addr); 7791da177e4SLinus Torvalds 780536b2e92SEric Dumazet rcu_read_lock(); 7814c9483b2SDavid S. Miller if (fl6->flowi6_oif) { 7824c9483b2SDavid S. Miller dev = dev_get_by_index_rcu(net, fl6->flowi6_oif); 783536b2e92SEric Dumazet if (!dev) { 784536b2e92SEric Dumazet rcu_read_unlock(); 7851da177e4SLinus Torvalds return -ENODEV; 786536b2e92SEric Dumazet } 787536b2e92SEric Dumazet } else if (addr_type & IPV6_ADDR_LINKLOCAL) { 788536b2e92SEric Dumazet rcu_read_unlock(); 789187e3838SYOSHIFUJI Hideaki return -EINVAL; 790536b2e92SEric Dumazet } 791187e3838SYOSHIFUJI Hideaki 792187e3838SYOSHIFUJI Hideaki if (addr_type != IPV6_ADDR_ANY) { 793187e3838SYOSHIFUJI Hideaki int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL; 7942563fa59SMaciej Żenczykowski if (!(inet_sk(sk)->freebind || inet_sk(sk)->transparent) && 795ec0506dbSMaciej Żenczykowski !ipv6_chk_addr(net, &src_info->ipi6_addr, 7967c90cc2dSFX Le Bail strict ? dev : NULL, 0) && 7977c90cc2dSFX Le Bail !ipv6_chk_acast_addr_src(net, dev, 7987c90cc2dSFX Le Bail &src_info->ipi6_addr)) 7991da177e4SLinus Torvalds err = -EINVAL; 800187e3838SYOSHIFUJI Hideaki else 8014e3fd7a0SAlexey Dobriyan fl6->saddr = src_info->ipi6_addr; 8021da177e4SLinus Torvalds } 803187e3838SYOSHIFUJI Hideaki 804536b2e92SEric Dumazet rcu_read_unlock(); 8051da177e4SLinus Torvalds 806187e3838SYOSHIFUJI Hideaki if (err) 807187e3838SYOSHIFUJI Hideaki goto exit_f; 808187e3838SYOSHIFUJI Hideaki 8091da177e4SLinus Torvalds break; 810187e3838SYOSHIFUJI Hideaki } 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds case IPV6_FLOWINFO: 8131da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(4)) { 8141da177e4SLinus Torvalds err = -EINVAL; 8151da177e4SLinus Torvalds goto exit_f; 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds 8184c9483b2SDavid S. Miller if (fl6->flowlabel&IPV6_FLOWINFO_MASK) { 8194c9483b2SDavid S. Miller if ((fl6->flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) { 8201da177e4SLinus Torvalds err = -EINVAL; 8211da177e4SLinus Torvalds goto exit_f; 8221da177e4SLinus Torvalds } 8231da177e4SLinus Torvalds } 8244c9483b2SDavid S. Miller fl6->flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg); 8251da177e4SLinus Torvalds break; 8261da177e4SLinus Torvalds 827333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPOPTS: 8281da177e4SLinus Torvalds case IPV6_HOPOPTS: 8291da177e4SLinus Torvalds if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { 8301da177e4SLinus Torvalds err = -EINVAL; 8311da177e4SLinus Torvalds goto exit_f; 8321da177e4SLinus Torvalds } 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); 8351da177e4SLinus Torvalds len = ((hdr->hdrlen + 1) << 3); 8361da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(len)) { 8371da177e4SLinus Torvalds err = -EINVAL; 8381da177e4SLinus Torvalds goto exit_f; 8391da177e4SLinus Torvalds } 840af31f412SEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_RAW)) { 8411da177e4SLinus Torvalds err = -EPERM; 8421da177e4SLinus Torvalds goto exit_f; 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds opt->opt_nflen += len; 8451da177e4SLinus Torvalds opt->hopopt = hdr; 8461da177e4SLinus Torvalds break; 8471da177e4SLinus Torvalds 848333fad53SYOSHIFUJI Hideaki case IPV6_2292DSTOPTS: 8491da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { 8501da177e4SLinus Torvalds err = -EINVAL; 8511da177e4SLinus Torvalds goto exit_f; 8521da177e4SLinus Torvalds } 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); 8551da177e4SLinus Torvalds len = ((hdr->hdrlen + 1) << 3); 8561da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(len)) { 8571da177e4SLinus Torvalds err = -EINVAL; 8581da177e4SLinus Torvalds goto exit_f; 8591da177e4SLinus Torvalds } 860af31f412SEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_RAW)) { 8611da177e4SLinus Torvalds err = -EPERM; 8621da177e4SLinus Torvalds goto exit_f; 8631da177e4SLinus Torvalds } 8641da177e4SLinus Torvalds if (opt->dst1opt) { 8651da177e4SLinus Torvalds err = -EINVAL; 8661da177e4SLinus Torvalds goto exit_f; 8671da177e4SLinus Torvalds } 8681da177e4SLinus Torvalds opt->opt_flen += len; 8691da177e4SLinus Torvalds opt->dst1opt = hdr; 8701da177e4SLinus Torvalds break; 8711da177e4SLinus Torvalds 872333fad53SYOSHIFUJI Hideaki case IPV6_DSTOPTS: 873333fad53SYOSHIFUJI Hideaki case IPV6_RTHDRDSTOPTS: 874333fad53SYOSHIFUJI Hideaki if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { 875333fad53SYOSHIFUJI Hideaki err = -EINVAL; 876333fad53SYOSHIFUJI Hideaki goto exit_f; 877333fad53SYOSHIFUJI Hideaki } 878333fad53SYOSHIFUJI Hideaki 879333fad53SYOSHIFUJI Hideaki hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); 880333fad53SYOSHIFUJI Hideaki len = ((hdr->hdrlen + 1) << 3); 881333fad53SYOSHIFUJI Hideaki if (cmsg->cmsg_len < CMSG_LEN(len)) { 882333fad53SYOSHIFUJI Hideaki err = -EINVAL; 883333fad53SYOSHIFUJI Hideaki goto exit_f; 884333fad53SYOSHIFUJI Hideaki } 885af31f412SEric W. Biederman if (!ns_capable(net->user_ns, CAP_NET_RAW)) { 886333fad53SYOSHIFUJI Hideaki err = -EPERM; 887333fad53SYOSHIFUJI Hideaki goto exit_f; 888333fad53SYOSHIFUJI Hideaki } 889333fad53SYOSHIFUJI Hideaki if (cmsg->cmsg_type == IPV6_DSTOPTS) { 890333fad53SYOSHIFUJI Hideaki opt->opt_flen += len; 891333fad53SYOSHIFUJI Hideaki opt->dst1opt = hdr; 892333fad53SYOSHIFUJI Hideaki } else { 893333fad53SYOSHIFUJI Hideaki opt->opt_nflen += len; 894333fad53SYOSHIFUJI Hideaki opt->dst0opt = hdr; 895333fad53SYOSHIFUJI Hideaki } 896333fad53SYOSHIFUJI Hideaki break; 897333fad53SYOSHIFUJI Hideaki 898333fad53SYOSHIFUJI Hideaki case IPV6_2292RTHDR: 8991da177e4SLinus Torvalds case IPV6_RTHDR: 9001da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) { 9011da177e4SLinus Torvalds err = -EINVAL; 9021da177e4SLinus Torvalds goto exit_f; 9031da177e4SLinus Torvalds } 9041da177e4SLinus Torvalds 9051da177e4SLinus Torvalds rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg); 9061da177e4SLinus Torvalds 907280a9d34SMasahide NAKAMURA switch (rthdr->type) { 90807a93626SAmerigo Wang #if IS_ENABLED(CONFIG_IPV6_MIP6) 909280a9d34SMasahide NAKAMURA case IPV6_SRCRT_TYPE_2: 9106e093d9dSBrian Haley if (rthdr->hdrlen != 2 || 9116e093d9dSBrian Haley rthdr->segments_left != 1) { 9126e093d9dSBrian Haley err = -EINVAL; 9136e093d9dSBrian Haley goto exit_f; 9146e093d9dSBrian Haley } 915280a9d34SMasahide NAKAMURA break; 916bb4dbf9eSYOSHIFUJI Hideaki #endif 917280a9d34SMasahide NAKAMURA default: 9181da177e4SLinus Torvalds err = -EINVAL; 9191da177e4SLinus Torvalds goto exit_f; 9201da177e4SLinus Torvalds } 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds len = ((rthdr->hdrlen + 1) << 3); 9231da177e4SLinus Torvalds 9241da177e4SLinus Torvalds if (cmsg->cmsg_len < CMSG_LEN(len)) { 9251da177e4SLinus Torvalds err = -EINVAL; 9261da177e4SLinus Torvalds goto exit_f; 9271da177e4SLinus Torvalds } 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds /* segments left must also match */ 9301da177e4SLinus Torvalds if ((rthdr->hdrlen >> 1) != rthdr->segments_left) { 9311da177e4SLinus Torvalds err = -EINVAL; 9321da177e4SLinus Torvalds goto exit_f; 9331da177e4SLinus Torvalds } 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvalds opt->opt_nflen += len; 9361da177e4SLinus Torvalds opt->srcrt = rthdr; 9371da177e4SLinus Torvalds 938333fad53SYOSHIFUJI Hideaki if (cmsg->cmsg_type == IPV6_2292RTHDR && opt->dst1opt) { 9391da177e4SLinus Torvalds int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3); 9401da177e4SLinus Torvalds 9411da177e4SLinus Torvalds opt->opt_nflen += dsthdrlen; 9421da177e4SLinus Torvalds opt->dst0opt = opt->dst1opt; 9431da177e4SLinus Torvalds opt->dst1opt = NULL; 9441da177e4SLinus Torvalds opt->opt_flen -= dsthdrlen; 9451da177e4SLinus Torvalds } 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds break; 9481da177e4SLinus Torvalds 949333fad53SYOSHIFUJI Hideaki case IPV6_2292HOPLIMIT: 9501da177e4SLinus Torvalds case IPV6_HOPLIMIT: 9511da177e4SLinus Torvalds if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { 9521da177e4SLinus Torvalds err = -EINVAL; 9531da177e4SLinus Torvalds goto exit_f; 9541da177e4SLinus Torvalds } 9551da177e4SLinus Torvalds 95626879da5SWei Wang ipc6->hlimit = *(int *)CMSG_DATA(cmsg); 95726879da5SWei Wang if (ipc6->hlimit < -1 || ipc6->hlimit > 0xff) { 958e8766fc8SShan Wei err = -EINVAL; 959e8766fc8SShan Wei goto exit_f; 960e8766fc8SShan Wei } 961e8766fc8SShan Wei 9621da177e4SLinus Torvalds break; 9631da177e4SLinus Torvalds 96441a1f8eaSYOSHIFUJI Hideaki case IPV6_TCLASS: 96541a1f8eaSYOSHIFUJI Hideaki { 96641a1f8eaSYOSHIFUJI Hideaki int tc; 96741a1f8eaSYOSHIFUJI Hideaki 96841a1f8eaSYOSHIFUJI Hideaki err = -EINVAL; 969b5a4257cSEldad Zack if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) 97041a1f8eaSYOSHIFUJI Hideaki goto exit_f; 97141a1f8eaSYOSHIFUJI Hideaki 97241a1f8eaSYOSHIFUJI Hideaki tc = *(int *)CMSG_DATA(cmsg); 973d0ee011fSRemi Denis-Courmont if (tc < -1 || tc > 0xff) 97441a1f8eaSYOSHIFUJI Hideaki goto exit_f; 97541a1f8eaSYOSHIFUJI Hideaki 97641a1f8eaSYOSHIFUJI Hideaki err = 0; 97726879da5SWei Wang ipc6->tclass = tc; 97841a1f8eaSYOSHIFUJI Hideaki 97941a1f8eaSYOSHIFUJI Hideaki break; 98041a1f8eaSYOSHIFUJI Hideaki } 98113b52cd4SBrian Haley 98213b52cd4SBrian Haley case IPV6_DONTFRAG: 98313b52cd4SBrian Haley { 98413b52cd4SBrian Haley int df; 98513b52cd4SBrian Haley 98613b52cd4SBrian Haley err = -EINVAL; 987b5a4257cSEldad Zack if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) 98813b52cd4SBrian Haley goto exit_f; 98913b52cd4SBrian Haley 99013b52cd4SBrian Haley df = *(int *)CMSG_DATA(cmsg); 99113b52cd4SBrian Haley if (df < 0 || df > 1) 99213b52cd4SBrian Haley goto exit_f; 99313b52cd4SBrian Haley 99413b52cd4SBrian Haley err = 0; 99526879da5SWei Wang ipc6->dontfrag = df; 99613b52cd4SBrian Haley 99713b52cd4SBrian Haley break; 99813b52cd4SBrian Haley } 9991da177e4SLinus Torvalds default: 1000ba7a46f1SJoe Perches net_dbg_ratelimited("invalid cmsg type: %d\n", 100164ce2073SPatrick McHardy cmsg->cmsg_type); 10021da177e4SLinus Torvalds err = -EINVAL; 10034a36702eSMiao Xie goto exit_f; 10043ff50b79SStephen Hemminger } 10051da177e4SLinus Torvalds } 10061da177e4SLinus Torvalds 10071da177e4SLinus Torvalds exit_f: 10081da177e4SLinus Torvalds return err; 10091da177e4SLinus Torvalds } 101073df66f8STom Parkin EXPORT_SYMBOL_GPL(ip6_datagram_send_ctl); 101117ef66afSLorenzo Colitti 101217ef66afSLorenzo Colitti void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, 101317ef66afSLorenzo Colitti __u16 srcp, __u16 destp, int bucket) 101417ef66afSLorenzo Colitti { 101517ef66afSLorenzo Colitti const struct in6_addr *dest, *src; 101617ef66afSLorenzo Colitti 1017efe4208fSEric Dumazet dest = &sp->sk_v6_daddr; 1018efe4208fSEric Dumazet src = &sp->sk_v6_rcv_saddr; 101917ef66afSLorenzo Colitti seq_printf(seq, 102017ef66afSLorenzo Colitti "%5d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " 1021d14c5ab6SFrancesco Fusco "%02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", 102217ef66afSLorenzo Colitti bucket, 102317ef66afSLorenzo Colitti src->s6_addr32[0], src->s6_addr32[1], 102417ef66afSLorenzo Colitti src->s6_addr32[2], src->s6_addr32[3], srcp, 102517ef66afSLorenzo Colitti dest->s6_addr32[0], dest->s6_addr32[1], 102617ef66afSLorenzo Colitti dest->s6_addr32[2], dest->s6_addr32[3], destp, 102717ef66afSLorenzo Colitti sp->sk_state, 102817ef66afSLorenzo Colitti sk_wmem_alloc_get(sp), 102917ef66afSLorenzo Colitti sk_rmem_alloc_get(sp), 103017ef66afSLorenzo Colitti 0, 0L, 0, 103117ef66afSLorenzo Colitti from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), 103217ef66afSLorenzo Colitti 0, 103317ef66afSLorenzo Colitti sock_i_ino(sp), 103417ef66afSLorenzo Colitti atomic_read(&sp->sk_refcnt), sp, 103517ef66afSLorenzo Colitti atomic_read(&sp->sk_drops)); 103617ef66afSLorenzo Colitti } 1037