Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / net / ipv6 / ipv6_sockglue.c
index aa7bedf..2aa294b 100644 (file)
@@ -7,8 +7,6 @@
  *
  *     Based on linux/net/ipv4/ip_sockglue.c
  *
- *     $Id: ipv6_sockglue.c,v 1.41 2002/02/01 22:01:04 davem Exp $
- *
  *     This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License
  *      as published by the Free Software Foundation; either version
@@ -61,13 +59,13 @@ DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
 struct ip6_ra_chain *ip6_ra_chain;
 DEFINE_RWLOCK(ip6_ra_lock);
 
-int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
+int ip6_ra_control(struct sock *sk, int sel)
 {
        struct ip6_ra_chain *ra, *new_ra, **rap;
 
        /* RA packet may be delivered ONLY to IPPROTO_RAW socket */
        if (sk->sk_type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
-               return -EINVAL;
+               return -ENOPROTOOPT;
 
        new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
 
@@ -83,8 +81,6 @@ int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
                        *rap = ra->next;
                        write_unlock_bh(&ip6_ra_lock);
 
-                       if (ra->destructor)
-                               ra->destructor(sk);
                        sock_put(sk);
                        kfree(ra);
                        return 0;
@@ -96,7 +92,6 @@ int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
        }
        new_ra->sk = sk;
        new_ra->sel = sel;
-       new_ra->destructor = destructor;
        new_ra->next = ra;
        *rap = new_ra;
        sock_hold(sk);
@@ -161,9 +156,17 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
                        struct ipv6_txoptions *opt;
                        struct sk_buff *pktopt;
 
-                       if (sk->sk_protocol != IPPROTO_UDP &&
-                           sk->sk_protocol != IPPROTO_UDPLITE &&
-                           sk->sk_protocol != IPPROTO_TCP)
+                       if (sk->sk_type == SOCK_RAW)
+                               break;
+
+                       if (sk->sk_protocol == IPPROTO_UDP ||
+                           sk->sk_protocol == IPPROTO_UDPLITE) {
+                               struct udp_sock *up = udp_sk(sk);
+                               if (up->pending == AF_INET6) {
+                                       retv = -EBUSY;
+                                       break;
+                               }
+                       } else if (sk->sk_protocol != IPPROTO_TCP)
                                break;
 
                        if (sk->sk_state != TCP_ESTABLISHED) {
@@ -337,18 +340,23 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
        case IPV6_DSTOPTS:
        {
                struct ipv6_txoptions *opt;
+
+               /* remove any sticky options header with a zero option
+                * length, per RFC3542.
+                */
                if (optlen == 0)
                        optval = NULL;
+               else if (optval == NULL)
+                       goto e_inval;
+               else if (optlen < sizeof(struct ipv6_opt_hdr) ||
+                        optlen & 0x7 || optlen > 8 * 255)
+                       goto e_inval;
 
                /* hop-by-hop / destination options are privileged option */
                retv = -EPERM;
                if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
                        break;
 
-               if (optlen < sizeof(struct ipv6_opt_hdr) ||
-                   optlen & 0x7 || optlen > 8 * 255)
-                       goto e_inval;
-
                opt = ipv6_renew_options(sk, np->opt, optname,
                                         (struct ipv6_opt_hdr __user *)optval,
                                         optlen);
@@ -358,11 +366,16 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
                }
 
                /* routing header option needs extra check */
+               retv = -EINVAL;
                if (optname == IPV6_RTHDR && opt && opt->srcrt) {
                        struct ipv6_rt_hdr *rthdr = opt->srcrt;
                        switch (rthdr->type) {
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
                        case IPV6_SRCRT_TYPE_2:
+                               if (rthdr->hdrlen != 2 ||
+                                   rthdr->segments_left != 1)
+                                       goto sticky_done;
+
                                break;
 #endif
                        default:
@@ -416,7 +429,7 @@ sticky_done:
                msg.msg_controllen = optlen;
                msg.msg_control = (void*)(opt+1);
 
-               retv = datagram_send_ctl(&msg, &fl, opt, &junk, &junk);
+               retv = datagram_send_ctl(net, &msg, &fl, opt, &junk, &junk);
                if (retv)
                        goto done;
 update:
@@ -438,7 +451,7 @@ done:
 
        case IPV6_MULTICAST_HOPS:
                if (sk->sk_type == SOCK_STREAM)
-                       goto e_inval;
+                       break;
                if (optlen < sizeof(int))
                        goto e_inval;
                if (val > 255 || val < -1)
@@ -450,13 +463,15 @@ done:
        case IPV6_MULTICAST_LOOP:
                if (optlen < sizeof(int))
                        goto e_inval;
+               if (val != valbool)
+                       goto e_inval;
                np->mc_loop = valbool;
                retv = 0;
                break;
 
        case IPV6_MULTICAST_IF:
                if (sk->sk_type == SOCK_STREAM)
-                       goto e_inval;
+                       break;
                if (optlen < sizeof(int))
                        goto e_inval;
 
@@ -621,7 +636,7 @@ done:
        case IPV6_ROUTER_ALERT:
                if (optlen < sizeof(int))
                        goto e_inval;
-               retv = ip6_ra_control(sk, val, NULL);
+               retv = ip6_ra_control(sk, val);
                break;
        case IPV6_MTU_DISCOVER:
                if (optlen < sizeof(int))
@@ -832,7 +847,7 @@ static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_txoptions *opt,
        len = min_t(unsigned int, len, ipv6_optlen(hdr));
        if (copy_to_user(optval, hdr, len))
                return -EFAULT;
-       return ipv6_optlen(hdr);
+       return len;
 }
 
 static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
@@ -852,7 +867,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                if (sk->sk_protocol != IPPROTO_UDP &&
                    sk->sk_protocol != IPPROTO_UDPLITE &&
                    sk->sk_protocol != IPPROTO_TCP)
-                       return -EINVAL;
+                       return -ENOPROTOOPT;
                if (sk->sk_state != TCP_ESTABLISHED)
                        return -ENOTCONN;
                val = sk->sk_family;
@@ -866,6 +881,8 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                        return -EINVAL;
                if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
                        return -EFAULT;
+               if (gsf.gf_group.ss_family != AF_INET6)
+                       return -EADDRNOTAVAIL;
                lock_sock(sk);
                err = ip6_mc_msfget(sk, &gsf,
                        (struct group_filter __user *)optval, optlen);
@@ -899,7 +916,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                } else {
                        if (np->rxopt.bits.rxinfo) {
                                struct in6_pktinfo src_info;
-                               src_info.ipi6_ifindex = np->mcast_oif;
+                               src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : sk->sk_bound_dev_if;
                                ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
                                put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
                        }
@@ -909,7 +926,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                        }
                        if (np->rxopt.bits.rxoinfo) {
                                struct in6_pktinfo src_info;
-                               src_info.ipi6_ifindex = np->mcast_oif;
+                               src_info.ipi6_ifindex = np->mcast_oif ? np->mcast_oif : sk->sk_bound_dev_if;
                                ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
                                put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
                        }
@@ -1028,7 +1045,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                        dst_release(dst);
                }
                if (val < 0)
-                       val = ipv6_devconf.hop_limit;
+                       val = sock_net(sk)->ipv6.devconf_all->hop_limit;
                break;
        }