/*
|
/*
|
* common UDP/RAW code
|
* common UDP/RAW code
|
* Linux INET6 implementation
|
* Linux INET6 implementation
|
*
|
*
|
* Authors:
|
* Authors:
|
* Pedro Roque <roque@di.fc.ul.pt>
|
* Pedro Roque <roque@di.fc.ul.pt>
|
*
|
*
|
* $Id: datagram.c,v 1.1.1.1 2004-04-15 01:14:46 phoenix Exp $
|
* $Id: datagram.c,v 1.1.1.1 2004-04-15 01:14:46 phoenix Exp $
|
*
|
*
|
* This program is free software; you can redistribute it and/or
|
* This program is free software; you can redistribute it and/or
|
* modify it under the terms of the GNU General Public License
|
* modify it under the terms of the GNU General Public License
|
* as published by the Free Software Foundation; either version
|
* as published by the Free Software Foundation; either version
|
* 2 of the License, or (at your option) any later version.
|
* 2 of the License, or (at your option) any later version.
|
*/
|
*/
|
|
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/types.h>
|
#include <linux/types.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
#include <linux/sched.h>
|
#include <linux/sched.h>
|
#include <linux/interrupt.h>
|
#include <linux/interrupt.h>
|
#include <linux/socket.h>
|
#include <linux/socket.h>
|
#include <linux/sockios.h>
|
#include <linux/sockios.h>
|
#include <linux/in6.h>
|
#include <linux/in6.h>
|
#include <linux/ipv6.h>
|
#include <linux/ipv6.h>
|
#include <linux/route.h>
|
#include <linux/route.h>
|
|
|
#include <net/ipv6.h>
|
#include <net/ipv6.h>
|
#include <net/ndisc.h>
|
#include <net/ndisc.h>
|
#include <net/addrconf.h>
|
#include <net/addrconf.h>
|
#include <net/transp_v6.h>
|
#include <net/transp_v6.h>
|
|
|
#include <linux/errqueue.h>
|
#include <linux/errqueue.h>
|
#include <asm/uaccess.h>
|
#include <asm/uaccess.h>
|
|
|
void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
|
void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
|
u16 port, u32 info, u8 *payload)
|
u16 port, u32 info, u8 *payload)
|
{
|
{
|
struct icmp6hdr *icmph = (struct icmp6hdr *)skb->h.raw;
|
struct icmp6hdr *icmph = (struct icmp6hdr *)skb->h.raw;
|
struct sock_exterr_skb *serr;
|
struct sock_exterr_skb *serr;
|
|
|
if (!sk->net_pinfo.af_inet6.recverr)
|
if (!sk->net_pinfo.af_inet6.recverr)
|
return;
|
return;
|
|
|
skb = skb_clone(skb, GFP_ATOMIC);
|
skb = skb_clone(skb, GFP_ATOMIC);
|
if (!skb)
|
if (!skb)
|
return;
|
return;
|
|
|
serr = SKB_EXT_ERR(skb);
|
serr = SKB_EXT_ERR(skb);
|
serr->ee.ee_errno = err;
|
serr->ee.ee_errno = err;
|
serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6;
|
serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6;
|
serr->ee.ee_type = icmph->icmp6_type;
|
serr->ee.ee_type = icmph->icmp6_type;
|
serr->ee.ee_code = icmph->icmp6_code;
|
serr->ee.ee_code = icmph->icmp6_code;
|
serr->ee.ee_pad = 0;
|
serr->ee.ee_pad = 0;
|
serr->ee.ee_info = info;
|
serr->ee.ee_info = info;
|
serr->ee.ee_data = 0;
|
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->nh.raw;
|
serr->port = port;
|
serr->port = port;
|
|
|
skb->h.raw = payload;
|
skb->h.raw = payload;
|
__skb_pull(skb, payload - skb->data);
|
__skb_pull(skb, payload - skb->data);
|
|
|
if (sock_queue_err_skb(sk, skb))
|
if (sock_queue_err_skb(sk, skb))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info)
|
void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info)
|
{
|
{
|
struct sock_exterr_skb *serr;
|
struct sock_exterr_skb *serr;
|
struct ipv6hdr *iph;
|
struct ipv6hdr *iph;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
if (!sk->net_pinfo.af_inet6.recverr)
|
if (!sk->net_pinfo.af_inet6.recverr)
|
return;
|
return;
|
|
|
skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC);
|
skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC);
|
if (!skb)
|
if (!skb)
|
return;
|
return;
|
|
|
iph = (struct ipv6hdr*)skb_put(skb, sizeof(struct ipv6hdr));
|
iph = (struct ipv6hdr*)skb_put(skb, sizeof(struct ipv6hdr));
|
skb->nh.ipv6h = iph;
|
skb->nh.ipv6h = iph;
|
memcpy(&iph->daddr, fl->fl6_dst, 16);
|
memcpy(&iph->daddr, fl->fl6_dst, 16);
|
|
|
serr = SKB_EXT_ERR(skb);
|
serr = SKB_EXT_ERR(skb);
|
serr->ee.ee_errno = err;
|
serr->ee.ee_errno = err;
|
serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL;
|
serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL;
|
serr->ee.ee_type = 0;
|
serr->ee.ee_type = 0;
|
serr->ee.ee_code = 0;
|
serr->ee.ee_code = 0;
|
serr->ee.ee_pad = 0;
|
serr->ee.ee_pad = 0;
|
serr->ee.ee_info = info;
|
serr->ee.ee_info = info;
|
serr->ee.ee_data = 0;
|
serr->ee.ee_data = 0;
|
serr->addr_offset = (u8*)&iph->daddr - skb->nh.raw;
|
serr->addr_offset = (u8*)&iph->daddr - skb->nh.raw;
|
serr->port = fl->uli_u.ports.dport;
|
serr->port = fl->uli_u.ports.dport;
|
|
|
skb->h.raw = skb->tail;
|
skb->h.raw = skb->tail;
|
__skb_pull(skb, skb->tail - skb->data);
|
__skb_pull(skb, skb->tail - skb->data);
|
|
|
if (sock_queue_err_skb(sk, skb))
|
if (sock_queue_err_skb(sk, skb))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
/*
|
/*
|
* Handle MSG_ERRQUEUE
|
* Handle MSG_ERRQUEUE
|
*/
|
*/
|
int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
|
int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
|
{
|
{
|
struct sock_exterr_skb *serr;
|
struct sock_exterr_skb *serr;
|
struct sk_buff *skb, *skb2;
|
struct sk_buff *skb, *skb2;
|
struct sockaddr_in6 *sin;
|
struct sockaddr_in6 *sin;
|
struct {
|
struct {
|
struct sock_extended_err ee;
|
struct sock_extended_err ee;
|
struct sockaddr_in6 offender;
|
struct sockaddr_in6 offender;
|
} errhdr;
|
} errhdr;
|
int err;
|
int err;
|
int copied;
|
int copied;
|
|
|
err = -EAGAIN;
|
err = -EAGAIN;
|
skb = skb_dequeue(&sk->error_queue);
|
skb = skb_dequeue(&sk->error_queue);
|
if (skb == NULL)
|
if (skb == NULL)
|
goto out;
|
goto out;
|
|
|
copied = skb->len;
|
copied = skb->len;
|
if (copied > len) {
|
if (copied > len) {
|
msg->msg_flags |= MSG_TRUNC;
|
msg->msg_flags |= MSG_TRUNC;
|
copied = len;
|
copied = len;
|
}
|
}
|
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
if (err)
|
if (err)
|
goto out_free_skb;
|
goto out_free_skb;
|
|
|
sock_recv_timestamp(msg, sk, skb);
|
sock_recv_timestamp(msg, sk, skb);
|
|
|
serr = SKB_EXT_ERR(skb);
|
serr = SKB_EXT_ERR(skb);
|
|
|
sin = (struct sockaddr_in6 *)msg->msg_name;
|
sin = (struct sockaddr_in6 *)msg->msg_name;
|
if (sin) {
|
if (sin) {
|
sin->sin6_family = AF_INET6;
|
sin->sin6_family = AF_INET6;
|
sin->sin6_flowinfo = 0;
|
sin->sin6_flowinfo = 0;
|
sin->sin6_port = serr->port;
|
sin->sin6_port = serr->port;
|
sin->sin6_scope_id = 0;
|
sin->sin6_scope_id = 0;
|
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
|
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
|
memcpy(&sin->sin6_addr, skb->nh.raw + serr->addr_offset, 16);
|
memcpy(&sin->sin6_addr, skb->nh.raw + serr->addr_offset, 16);
|
if (sk->net_pinfo.af_inet6.sndflow)
|
if (sk->net_pinfo.af_inet6.sndflow)
|
sin->sin6_flowinfo = *(u32*)(skb->nh.raw + serr->addr_offset - 24) & IPV6_FLOWINFO_MASK;
|
sin->sin6_flowinfo = *(u32*)(skb->nh.raw + serr->addr_offset - 24) & IPV6_FLOWINFO_MASK;
|
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
sin->sin6_scope_id = opt->iif;
|
sin->sin6_scope_id = opt->iif;
|
}
|
}
|
} else {
|
} else {
|
ipv6_addr_set(&sin->sin6_addr, 0, 0,
|
ipv6_addr_set(&sin->sin6_addr, 0, 0,
|
htonl(0xffff),
|
htonl(0xffff),
|
*(u32*)(skb->nh.raw + serr->addr_offset));
|
*(u32*)(skb->nh.raw + serr->addr_offset));
|
}
|
}
|
}
|
}
|
|
|
memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err));
|
memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err));
|
sin = &errhdr.offender;
|
sin = &errhdr.offender;
|
sin->sin6_family = AF_UNSPEC;
|
sin->sin6_family = AF_UNSPEC;
|
if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) {
|
if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) {
|
sin->sin6_family = AF_INET6;
|
sin->sin6_family = AF_INET6;
|
sin->sin6_flowinfo = 0;
|
sin->sin6_flowinfo = 0;
|
sin->sin6_scope_id = 0;
|
sin->sin6_scope_id = 0;
|
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
|
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
|
memcpy(&sin->sin6_addr, &skb->nh.ipv6h->saddr, 16);
|
memcpy(&sin->sin6_addr, &skb->nh.ipv6h->saddr, 16);
|
if (sk->net_pinfo.af_inet6.rxopt.all)
|
if (sk->net_pinfo.af_inet6.rxopt.all)
|
datagram_recv_ctl(sk, msg, skb);
|
datagram_recv_ctl(sk, msg, skb);
|
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
sin->sin6_scope_id = opt->iif;
|
sin->sin6_scope_id = opt->iif;
|
}
|
}
|
} else {
|
} else {
|
ipv6_addr_set(&sin->sin6_addr, 0, 0,
|
ipv6_addr_set(&sin->sin6_addr, 0, 0,
|
htonl(0xffff),
|
htonl(0xffff),
|
skb->nh.iph->saddr);
|
skb->nh.iph->saddr);
|
if (sk->protinfo.af_inet.cmsg_flags)
|
if (sk->protinfo.af_inet.cmsg_flags)
|
ip_cmsg_recv(msg, skb);
|
ip_cmsg_recv(msg, skb);
|
}
|
}
|
}
|
}
|
|
|
put_cmsg(msg, SOL_IPV6, IPV6_RECVERR, sizeof(errhdr), &errhdr);
|
put_cmsg(msg, SOL_IPV6, IPV6_RECVERR, sizeof(errhdr), &errhdr);
|
|
|
/* Now we could try to dump offended packet options */
|
/* Now we could try to dump offended packet options */
|
|
|
msg->msg_flags |= MSG_ERRQUEUE;
|
msg->msg_flags |= MSG_ERRQUEUE;
|
err = copied;
|
err = copied;
|
|
|
/* Reset and regenerate socket error */
|
/* Reset and regenerate socket error */
|
spin_lock_irq(&sk->error_queue.lock);
|
spin_lock_irq(&sk->error_queue.lock);
|
sk->err = 0;
|
sk->err = 0;
|
if ((skb2 = skb_peek(&sk->error_queue)) != NULL) {
|
if ((skb2 = skb_peek(&sk->error_queue)) != NULL) {
|
sk->err = SKB_EXT_ERR(skb2)->ee.ee_errno;
|
sk->err = SKB_EXT_ERR(skb2)->ee.ee_errno;
|
spin_unlock_irq(&sk->error_queue.lock);
|
spin_unlock_irq(&sk->error_queue.lock);
|
sk->error_report(sk);
|
sk->error_report(sk);
|
} else {
|
} else {
|
spin_unlock_irq(&sk->error_queue.lock);
|
spin_unlock_irq(&sk->error_queue.lock);
|
}
|
}
|
|
|
out_free_skb:
|
out_free_skb:
|
kfree_skb(skb);
|
kfree_skb(skb);
|
out:
|
out:
|
return err;
|
return err;
|
}
|
}
|
|
|
|
|
|
|
int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
|
int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
|
{
|
{
|
struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
|
struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
|
|
if (np->rxopt.bits.rxinfo) {
|
if (np->rxopt.bits.rxinfo) {
|
struct in6_pktinfo src_info;
|
struct in6_pktinfo src_info;
|
|
|
src_info.ipi6_ifindex = opt->iif;
|
src_info.ipi6_ifindex = opt->iif;
|
ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
|
ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
|
put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
|
put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
|
}
|
}
|
|
|
if (np->rxopt.bits.rxhlim) {
|
if (np->rxopt.bits.rxhlim) {
|
int hlim = skb->nh.ipv6h->hop_limit;
|
int hlim = skb->nh.ipv6h->hop_limit;
|
put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
|
put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
|
}
|
}
|
|
|
if (np->rxopt.bits.rxflow && (*(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) {
|
if (np->rxopt.bits.rxflow && (*(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) {
|
u32 flowinfo = *(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK;
|
u32 flowinfo = *(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK;
|
put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
|
put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
|
}
|
}
|
if (np->rxopt.bits.hopopts && opt->hop) {
|
if (np->rxopt.bits.hopopts && opt->hop) {
|
u8 *ptr = skb->nh.raw + opt->hop;
|
u8 *ptr = skb->nh.raw + opt->hop;
|
put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);
|
put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);
|
}
|
}
|
if (np->rxopt.bits.dstopts && opt->dst0) {
|
if (np->rxopt.bits.dstopts && opt->dst0) {
|
u8 *ptr = skb->nh.raw + opt->dst0;
|
u8 *ptr = skb->nh.raw + opt->dst0;
|
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr);
|
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr);
|
}
|
}
|
if (np->rxopt.bits.srcrt && opt->srcrt) {
|
if (np->rxopt.bits.srcrt && 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 *)(skb->nh.raw + opt->srcrt);
|
put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, (rthdr->hdrlen+1) << 3, rthdr);
|
put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, (rthdr->hdrlen+1) << 3, rthdr);
|
}
|
}
|
if (np->rxopt.bits.authhdr && opt->auth) {
|
if (np->rxopt.bits.authhdr && opt->auth) {
|
u8 *ptr = skb->nh.raw + opt->auth;
|
u8 *ptr = skb->nh.raw + opt->auth;
|
put_cmsg(msg, SOL_IPV6, IPV6_AUTHHDR, (ptr[1]+1)<<2, ptr);
|
put_cmsg(msg, SOL_IPV6, IPV6_AUTHHDR, (ptr[1]+1)<<2, ptr);
|
}
|
}
|
if (np->rxopt.bits.dstopts && opt->dst1) {
|
if (np->rxopt.bits.dstopts && opt->dst1) {
|
u8 *ptr = skb->nh.raw + opt->dst1;
|
u8 *ptr = skb->nh.raw + opt->dst1;
|
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr);
|
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
|
int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
|
struct ipv6_txoptions *opt,
|
struct ipv6_txoptions *opt,
|
int *hlimit)
|
int *hlimit)
|
{
|
{
|
struct in6_pktinfo *src_info;
|
struct in6_pktinfo *src_info;
|
struct cmsghdr *cmsg;
|
struct cmsghdr *cmsg;
|
struct ipv6_rt_hdr *rthdr;
|
struct ipv6_rt_hdr *rthdr;
|
struct ipv6_opt_hdr *hdr;
|
struct ipv6_opt_hdr *hdr;
|
int len;
|
int len;
|
int err = 0;
|
int err = 0;
|
|
|
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
|
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
|
|
|
if (cmsg->cmsg_len < sizeof(struct cmsghdr) ||
|
if (cmsg->cmsg_len < sizeof(struct cmsghdr) ||
|
(unsigned long)(((char*)cmsg - (char*)msg->msg_control)
|
(unsigned long)(((char*)cmsg - (char*)msg->msg_control)
|
+ cmsg->cmsg_len) > msg->msg_controllen) {
|
+ cmsg->cmsg_len) > msg->msg_controllen) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
if (cmsg->cmsg_level != SOL_IPV6)
|
if (cmsg->cmsg_level != SOL_IPV6)
|
continue;
|
continue;
|
|
|
switch (cmsg->cmsg_type) {
|
switch (cmsg->cmsg_type) {
|
case IPV6_PKTINFO:
|
case IPV6_PKTINFO:
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) {
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg);
|
src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg);
|
|
|
if (src_info->ipi6_ifindex) {
|
if (src_info->ipi6_ifindex) {
|
if (fl->oif && src_info->ipi6_ifindex != fl->oif)
|
if (fl->oif && src_info->ipi6_ifindex != fl->oif)
|
return -EINVAL;
|
return -EINVAL;
|
fl->oif = src_info->ipi6_ifindex;
|
fl->oif = src_info->ipi6_ifindex;
|
}
|
}
|
|
|
if (!ipv6_addr_any(&src_info->ipi6_addr)) {
|
if (!ipv6_addr_any(&src_info->ipi6_addr)) {
|
if (!ipv6_chk_addr(&src_info->ipi6_addr, NULL)) {
|
if (!ipv6_chk_addr(&src_info->ipi6_addr, NULL)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
fl->fl6_src = &src_info->ipi6_addr;
|
fl->fl6_src = &src_info->ipi6_addr;
|
}
|
}
|
|
|
break;
|
break;
|
|
|
case IPV6_FLOWINFO:
|
case IPV6_FLOWINFO:
|
if (cmsg->cmsg_len < CMSG_LEN(4)) {
|
if (cmsg->cmsg_len < CMSG_LEN(4)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
if (fl->fl6_flowlabel&IPV6_FLOWINFO_MASK) {
|
if (fl->fl6_flowlabel&IPV6_FLOWINFO_MASK) {
|
if ((fl->fl6_flowlabel^*(u32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
|
if ((fl->fl6_flowlabel^*(u32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
}
|
}
|
fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(u32 *)CMSG_DATA(cmsg);
|
fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(u32 *)CMSG_DATA(cmsg);
|
break;
|
break;
|
|
|
case IPV6_HOPOPTS:
|
case IPV6_HOPOPTS:
|
if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
len = ((hdr->hdrlen + 1) << 3);
|
len = ((hdr->hdrlen + 1) << 3);
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
if (!capable(CAP_NET_RAW)) {
|
if (!capable(CAP_NET_RAW)) {
|
err = -EPERM;
|
err = -EPERM;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
opt->opt_nflen += len;
|
opt->opt_nflen += len;
|
opt->hopopt = hdr;
|
opt->hopopt = hdr;
|
break;
|
break;
|
|
|
case IPV6_DSTOPTS:
|
case IPV6_DSTOPTS:
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
len = ((hdr->hdrlen + 1) << 3);
|
len = ((hdr->hdrlen + 1) << 3);
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
if (!capable(CAP_NET_RAW)) {
|
if (!capable(CAP_NET_RAW)) {
|
err = -EPERM;
|
err = -EPERM;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
if (opt->dst1opt) {
|
if (opt->dst1opt) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
opt->opt_flen += len;
|
opt->opt_flen += len;
|
opt->dst1opt = hdr;
|
opt->dst1opt = hdr;
|
break;
|
break;
|
|
|
case IPV6_AUTHHDR:
|
case IPV6_AUTHHDR:
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
|
len = ((hdr->hdrlen + 2) << 2);
|
len = ((hdr->hdrlen + 2) << 2);
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
if (len & ~7) {
|
if (len & ~7) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
opt->opt_flen += len;
|
opt->opt_flen += len;
|
opt->auth = hdr;
|
opt->auth = hdr;
|
break;
|
break;
|
|
|
case IPV6_RTHDR:
|
case IPV6_RTHDR:
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) {
|
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg);
|
rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg);
|
|
|
/*
|
/*
|
* TYPE 0
|
* TYPE 0
|
*/
|
*/
|
if (rthdr->type) {
|
if (rthdr->type) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
len = ((rthdr->hdrlen + 1) << 3);
|
len = ((rthdr->hdrlen + 1) << 3);
|
|
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
if (cmsg->cmsg_len < CMSG_LEN(len)) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
/* segments left must also match */
|
/* segments left must also match */
|
if ((rthdr->hdrlen >> 1) != rthdr->segments_left) {
|
if ((rthdr->hdrlen >> 1) != rthdr->segments_left) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
opt->opt_nflen += len;
|
opt->opt_nflen += len;
|
opt->srcrt = rthdr;
|
opt->srcrt = rthdr;
|
|
|
if (opt->dst1opt) {
|
if (opt->dst1opt) {
|
int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3);
|
int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3);
|
|
|
opt->opt_nflen += dsthdrlen;
|
opt->opt_nflen += dsthdrlen;
|
opt->dst0opt = opt->dst1opt;
|
opt->dst0opt = opt->dst1opt;
|
opt->dst1opt = NULL;
|
opt->dst1opt = NULL;
|
opt->opt_flen -= dsthdrlen;
|
opt->opt_flen -= dsthdrlen;
|
}
|
}
|
|
|
break;
|
break;
|
|
|
case IPV6_HOPLIMIT:
|
case IPV6_HOPLIMIT:
|
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) {
|
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) {
|
err = -EINVAL;
|
err = -EINVAL;
|
goto exit_f;
|
goto exit_f;
|
}
|
}
|
|
|
*hlimit = *(int *)CMSG_DATA(cmsg);
|
*hlimit = *(int *)CMSG_DATA(cmsg);
|
break;
|
break;
|
|
|
default:
|
default:
|
if (net_ratelimit())
|
if (net_ratelimit())
|
printk(KERN_DEBUG "invalid cmsg type: %d\n", cmsg->cmsg_type);
|
printk(KERN_DEBUG "invalid cmsg type: %d\n", cmsg->cmsg_type);
|
err = -EINVAL;
|
err = -EINVAL;
|
break;
|
break;
|
};
|
};
|
}
|
}
|
|
|
exit_f:
|
exit_f:
|
return err;
|
return err;
|
}
|
}
|
|
|
