* Authors:
* Pedro Roque <roque@di.fc.ul.pt>
*
- * $Id: datagram.c,v 1.24 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
if (err)
goto out;
- ipv6_addr_set(&np->daddr, 0, 0, htonl(0x0000ffff), inet->daddr);
+ ipv6_addr_set_v4mapped(inet->inet_daddr, &np->daddr);
- if (ipv6_addr_any(&np->saddr)) {
- ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000ffff),
- inet->saddr);
- }
+ if (ipv6_addr_any(&np->saddr))
+ ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
+
+ if (ipv6_addr_any(&np->rcv_saddr))
+ ipv6_addr_set_v4mapped(inet->inet_rcv_saddr,
+ &np->rcv_saddr);
- if (ipv6_addr_any(&np->rcv_saddr)) {
- ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000ffff),
- inet->rcv_saddr);
- }
goto out;
}
goto out;
}
sk->sk_bound_dev_if = usin->sin6_scope_id;
- if (!sk->sk_bound_dev_if &&
- (addr_type & IPV6_ADDR_MULTICAST))
- fl.oif = np->mcast_oif;
}
+ if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST))
+ sk->sk_bound_dev_if = np->mcast_oif;
+
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if) {
err = -EINVAL;
ipv6_addr_copy(&np->daddr, daddr);
np->flow_label = fl.fl6_flowlabel;
- inet->dport = usin->sin6_port;
+ inet->inet_dport = usin->sin6_port;
/*
* Check for a route to destination an obtain the
ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
ipv6_addr_copy(&fl.fl6_src, &np->saddr);
fl.oif = sk->sk_bound_dev_if;
- fl.fl_ip_dport = inet->dport;
- fl.fl_ip_sport = inet->sport;
+ fl.mark = sk->sk_mark;
+ fl.fl_ip_dport = inet->inet_dport;
+ fl.fl_ip_sport = inet->inet_sport;
if (!fl.oif && (addr_type&IPV6_ADDR_MULTICAST))
fl.oif = np->mcast_oif;
if (final_p)
ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 1)) < 0)
- goto out;
+ err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
+ if (err < 0) {
+ if (err == -EREMOTE)
+ err = ip6_dst_blackhole(sk, &dst, &fl);
+ if (err < 0)
+ goto out;
+ }
/* source address lookup done in ip6_dst_lookup */
if (ipv6_addr_any(&np->rcv_saddr)) {
ipv6_addr_copy(&np->rcv_saddr, &fl.fl6_src);
- inet->rcv_saddr = LOOPBACK4_IPV6;
+ inet->inet_rcv_saddr = LOOPBACK4_IPV6;
}
ip6_dst_store(sk, dst,
__be16 port, u32 info, u8 *payload)
{
struct ipv6_pinfo *np = inet6_sk(sk);
- struct icmp6hdr *icmph = (struct icmp6hdr *)skb->h.raw;
+ struct icmp6hdr *icmph = icmp6_hdr(skb);
struct sock_exterr_skb *serr;
if (!np->recverr)
serr->ee.ee_pad = 0;
serr->ee.ee_info = info;
serr->ee.ee_data = 0;
- serr->addr_offset = (u8*)&(((struct ipv6hdr*)(icmph+1))->daddr) - skb->nh.raw;
+ serr->addr_offset = (u8 *)&(((struct ipv6hdr *)(icmph + 1))->daddr) -
+ skb_network_header(skb);
serr->port = port;
- skb->h.raw = payload;
__skb_pull(skb, payload - skb->data);
+ skb_reset_transport_header(skb);
if (sock_queue_err_skb(sk, skb))
kfree_skb(skb);
skb_put(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
- iph = skb->nh.ipv6h;
+ iph = ipv6_hdr(skb);
ipv6_addr_copy(&iph->daddr, &fl->fl6_dst);
serr = SKB_EXT_ERR(skb);
serr->ee.ee_pad = 0;
serr->ee.ee_info = info;
serr->ee.ee_data = 0;
- serr->addr_offset = (u8*)&iph->daddr - skb->nh.raw;
+ serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb);
serr->port = fl->fl_ip_dport;
- skb->h.raw = skb->tail;
- __skb_pull(skb, skb->tail - skb->data);
+ __skb_pull(skb, skb_tail_pointer(skb) - skb->data);
+ skb_reset_transport_header(skb);
if (sock_queue_err_skb(sk, skb))
kfree_skb(skb);
sin = (struct sockaddr_in6 *)msg->msg_name;
if (sin) {
+ const unsigned char *nh = skb_network_header(skb);
sin->sin6_family = AF_INET6;
sin->sin6_flowinfo = 0;
sin->sin6_port = serr->port;
sin->sin6_scope_id = 0;
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
ipv6_addr_copy(&sin->sin6_addr,
- (struct in6_addr *)(skb->nh.raw + serr->addr_offset));
+ (struct in6_addr *)(nh + serr->addr_offset));
if (np->sndflow)
- sin->sin6_flowinfo = *(__be32*)(skb->nh.raw + serr->addr_offset - 24) & IPV6_FLOWINFO_MASK;
+ sin->sin6_flowinfo =
+ (*(__be32 *)(nh + serr->addr_offset - 24) &
+ IPV6_FLOWINFO_MASK);
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin->sin6_scope_id = IP6CB(skb)->iif;
} else {
- ipv6_addr_set(&sin->sin6_addr, 0, 0,
- htonl(0xffff),
- *(__be32*)(skb->nh.raw + serr->addr_offset));
+ ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset),
+ &sin->sin6_addr);
}
}
sin->sin6_flowinfo = 0;
sin->sin6_scope_id = 0;
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
- ipv6_addr_copy(&sin->sin6_addr, &skb->nh.ipv6h->saddr);
+ ipv6_addr_copy(&sin->sin6_addr, &ipv6_hdr(skb)->saddr);
if (np->rxopt.all)
datagram_recv_ctl(sk, msg, skb);
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
} else {
struct inet_sock *inet = inet_sk(sk);
- ipv6_addr_set(&sin->sin6_addr, 0, 0,
- htonl(0xffff),
- skb->nh.iph->saddr);
+ ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr,
+ &sin->sin6_addr);
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
}
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct inet6_skb_parm *opt = IP6CB(skb);
+ unsigned char *nh = skb_network_header(skb);
if (np->rxopt.bits.rxinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = opt->iif;
- ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
+ ipv6_addr_copy(&src_info.ipi6_addr, &ipv6_hdr(skb)->daddr);
put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxhlim) {
- int hlim = skb->nh.ipv6h->hop_limit;
+ int hlim = ipv6_hdr(skb)->hop_limit;
put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxtclass) {
- int tclass = (ntohl(*(__be32 *)skb->nh.ipv6h) >> 20) & 0xff;
+ int tclass = (ntohl(*(__be32 *)ipv6_hdr(skb)) >> 20) & 0xff;
put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
- if (np->rxopt.bits.rxflow && (*(__be32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) {
- __be32 flowinfo = *(__be32*)skb->nh.raw & IPV6_FLOWINFO_MASK;
+ if (np->rxopt.bits.rxflow && (*(__be32 *)nh & IPV6_FLOWINFO_MASK)) {
+ __be32 flowinfo = *(__be32 *)nh & IPV6_FLOWINFO_MASK;
put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
}
/* HbH is allowed only once */
if (np->rxopt.bits.hopopts && opt->hop) {
- u8 *ptr = skb->nh.raw + opt->hop;
+ u8 *ptr = nh + opt->hop;
put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);
}
* IPV6_RECVDSTOPTS is more generic. --yoshfuji
*/
unsigned int off = sizeof(struct ipv6hdr);
- u8 nexthdr = skb->nh.ipv6h->nexthdr;
+ u8 nexthdr = ipv6_hdr(skb)->nexthdr;
while (off <= opt->lastopt) {
unsigned len;
- u8 *ptr = skb->nh.raw + off;
+ u8 *ptr = nh + off;
switch(nexthdr) {
case IPPROTO_DSTOPTS:
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = opt->iif;
- ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
+ ipv6_addr_copy(&src_info.ipi6_addr, &ipv6_hdr(skb)->daddr);
put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {
- int hlim = skb->nh.ipv6h->hop_limit;
+ int hlim = ipv6_hdr(skb)->hop_limit;
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.ohopopts && opt->hop) {
- u8 *ptr = skb->nh.raw + opt->hop;
+ u8 *ptr = nh + opt->hop;
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.odstopts && opt->dst0) {
- u8 *ptr = skb->nh.raw + opt->dst0;
+ u8 *ptr = nh + opt->dst0;
put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.osrcrt && opt->srcrt) {
- struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(skb->nh.raw + opt->srcrt);
+ struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(nh + opt->srcrt);
put_cmsg(msg, SOL_IPV6, IPV6_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr);
}
if (np->rxopt.bits.odstopts && opt->dst1) {
- u8 *ptr = skb->nh.raw + opt->dst1;
+ u8 *ptr = nh + opt->dst1;
put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr);
}
return 0;
}
-int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
+int datagram_send_ctl(struct net *net,
+ struct msghdr *msg, struct flowi *fl,
struct ipv6_txoptions *opt,
int *hlimit, int *tclass)
{
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
int addr_type;
- struct net_device *dev = NULL;
if (!CMSG_OK(msg, cmsg)) {
err = -EINVAL;
switch (cmsg->cmsg_type) {
case IPV6_PKTINFO:
case IPV6_2292PKTINFO:
+ {
+ struct net_device *dev = NULL;
+
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) {
err = -EINVAL;
goto exit_f;
fl->oif = src_info->ipi6_ifindex;
}
- addr_type = ipv6_addr_type(&src_info->ipi6_addr);
-
- if (addr_type == IPV6_ADDR_ANY)
- break;
+ addr_type = __ipv6_addr_type(&src_info->ipi6_addr);
- if (addr_type & IPV6_ADDR_LINKLOCAL) {
- if (!src_info->ipi6_ifindex)
- return -EINVAL;
- else {
- dev = dev_get_by_index(src_info->ipi6_ifindex);
- if (!dev)
- return -ENODEV;
+ rcu_read_lock();
+ if (fl->oif) {
+ dev = dev_get_by_index_rcu(net, fl->oif);
+ if (!dev) {
+ rcu_read_unlock();
+ return -ENODEV;
}
+ } else if (addr_type & IPV6_ADDR_LINKLOCAL) {
+ rcu_read_unlock();
+ return -EINVAL;
}
- if (!ipv6_chk_addr(&src_info->ipi6_addr, dev, 0)) {
- if (dev)
- dev_put(dev);
- err = -EINVAL;
- goto exit_f;
+
+ if (addr_type != IPV6_ADDR_ANY) {
+ int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL;
+ if (!ipv6_chk_addr(net, &src_info->ipi6_addr,
+ strict ? dev : NULL, 0))
+ err = -EINVAL;
+ else
+ ipv6_addr_copy(&fl->fl6_src, &src_info->ipi6_addr);
}
- if (dev)
- dev_put(dev);
- ipv6_addr_copy(&fl->fl6_src, &src_info->ipi6_addr);
+ rcu_read_unlock();
+
+ if (err)
+ goto exit_f;
+
break;
+ }
case IPV6_FLOWINFO:
if (cmsg->cmsg_len < CMSG_LEN(4)) {
rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg);
switch (rthdr->type) {
- case IPV6_SRCRT_TYPE_0:
-#ifdef CONFIG_IPV6_MIP6
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
case IPV6_SRCRT_TYPE_2:
-#endif
+ if (rthdr->hdrlen != 2 ||
+ rthdr->segments_left != 1) {
+ err = -EINVAL;
+ goto exit_f;
+ }
break;
+#endif
default:
err = -EINVAL;
goto exit_f;
}
*hlimit = *(int *)CMSG_DATA(cmsg);
+ if (*hlimit < -1 || *hlimit > 0xff) {
+ err = -EINVAL;
+ goto exit_f;
+ }
+
break;
case IPV6_TCLASS:
LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n",
cmsg->cmsg_type);
err = -EINVAL;
- break;
- };
+ goto exit_f;
+ }
}
exit_f:
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff