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[IPV6]: Support several new sockopt / ancillary data in Advanced API (RFC3542).

Browse Source 
Support several new socket options / ancillary data:
  IPV6_RECVPKTINFO, IPV6_PKTINFO,
  IPV6_RECVHOPOPTS, IPV6_HOPOPTS,
  IPV6_RECVDSTOPTS, IPV6_DSTOPTS, IPV6_RTHDRDSTOPTS,
  IPV6_RECVRTHDR, IPV6_RTHDR,
  IPV6_RECVHOPOPTS, IPV6_HOPOPTS

Old semantics are preserved as IPV6_2292xxxx so that
we can maintain backward compatibility.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
YOSHIFUJI Hideaki 2005-09-08 09:59:17 +09:00
parent 4706df3d3c
commit 333fad5364
10 changed files with 423 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
include/linux/in6.h
View File

@ -148,13 +148,13 @@ struct in6_flowlabel_req
*/
#define IPV6_ADDRFORM 1
#define IPV6_PKTINFO 2
#define IPV6_HOPOPTS 3
#define IPV6_DSTOPTS 4
#define IPV6_RTHDR 5
#define IPV6_PKTOPTIONS 6
#define IPV6_2292PKTINFO 2
#define IPV6_2292HOPOPTS 3
#define IPV6_2292DSTOPTS 4
#define IPV6_2292RTHDR 5
#define IPV6_2292PKTOPTIONS 6
#define IPV6_CHECKSUM 7
#define IPV6_HOPLIMIT 8
#define IPV6_2292HOPLIMIT 8
#define IPV6_NEXTHOP 9
#define IPV6_AUTHHDR 10 /* obsolete */
#define IPV6_FLOWINFO 11
@ -198,4 +198,30 @@ struct in6_flowlabel_req
* MCAST_MSFILTER 48
*/
/* RFC3542 advanced socket options (50-67) */
#define IPV6_RECVPKTINFO 50
#define IPV6_PKTINFO 51
#if 0
#define IPV6_RECVPATHMTU 52
#define IPV6_PATHMTU 53
#define IPV6_DONTFRAG 54
#define IPV6_USE_MIN_MTU 55
#endif
#define IPV6_RECVHOPOPTS 56
#define IPV6_HOPOPTS 57
#if 0
#define IPV6_RECVRTHDRDSTOPTS 58 /* Unused, see net/ipv6/datagram.c */
#endif
#define IPV6_RTHDRDSTOPTS 59
#define IPV6_RECVRTHDR 60
#define IPV6_RTHDR 61
#define IPV6_RECVDSTOPTS 62
#define IPV6_DSTOPTS 63
#define IPV6_RECVHOPLIMIT 64
#define IPV6_HOPLIMIT 65
#if 0
#define IPV6_RECVTCLASS 66
#define IPV6_TCLASS 67
#endif
#endif

10
include/linux/ipv6.h
View File

@ -189,6 +189,7 @@ struct inet6_skb_parm {
__u16 dst0;
__u16 srcrt;
__u16 dst1;
__u16 lastopt;
};
#define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
@ -234,14 +235,19 @@ struct ipv6_pinfo {
/* pktoption flags */
union {
struct {
__u8 srcrt:2,
__u16 srcrt:2,
osrcrt:2,
rxinfo:1,
rxoinfo:1,
rxhlim:1,
rxohlim:1,
hopopts:1,
ohopopts:1,
dstopts:1,
odstopts:1,
rxflow:1;
} bits;
__u8 all;
__u16 all;
} rxopt;
/* sockopt flags */

4
include/net/ipv6.h
View File

@ -233,6 +233,10 @@ extern int ip6_ra_control(struct sock *sk, int sel,
extern int ipv6_parse_hopopts(struct sk_buff *skb, int);
extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
int newtype,
struct ipv6_opt_hdr __user *newopt,
int newoptlen);
extern int ip6_frag_nqueues;
extern atomic_t ip6_frag_mem;

110
net/ipv6/datagram.c
View File

@ -394,21 +394,85 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
u32 flowinfo = *(u32*)skb->nh.raw & 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;
put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.dstopts && opt->dst0) {
if (opt->lastopt &&
(np->rxopt.bits.dstopts || np->rxopt.bits.srcrt)) {
/*
* Silly enough, but we need to reparse in order to
* report extension headers (except for HbH)
* in order.
*
* Also note that IPV6_RECVRTHDRDSTOPTS is NOT
* (and WILL NOT be) defined because
* IPV6_RECVDSTOPTS is more generic. --yoshfuji
*/
unsigned int off = sizeof(struct ipv6hdr);
u8 nexthdr = skb->nh.ipv6h->nexthdr;
while (off <= opt->lastopt) {
unsigned len;
u8 *ptr = skb->nh.raw + off;
switch(nexthdr) {
case IPPROTO_DSTOPTS:
nexthdr = ptr[0];
len = (ptr[1] + 1) << 3;
if (np->rxopt.bits.dstopts)
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, len, ptr);
break;
case IPPROTO_ROUTING:
nexthdr = ptr[0];
len = (ptr[1] + 1) << 3;
if (np->rxopt.bits.srcrt)
put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, len, ptr);
break;
case IPPROTO_AH:
nexthdr = ptr[0];
len = (ptr[1] + 1) << 2;
break;
default:
nexthdr = ptr[0];
len = (ptr[1] + 1) << 3;
break;
}
off += len;
}
}
/* socket options in old style */
if (np->rxopt.bits.rxoinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = opt->iif;
ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->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;
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.ohopopts && opt->hop) {
u8 *ptr = skb->nh.raw + 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;
put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, (ptr[1]+1)<<3, ptr);
put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.srcrt && opt->srcrt) {
if (np->rxopt.bits.osrcrt && 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_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr);
}
if (np->rxopt.bits.dstopts && opt->dst1) {
if (np->rxopt.bits.odstopts && 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_2292DSTOPTS, (ptr[1]+1)<<3, ptr);
}
return 0;
}
@ -438,6 +502,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
switch (cmsg->cmsg_type) {
case IPV6_PKTINFO:
case IPV6_2292PKTINFO:
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) {
err = -EINVAL;
goto exit_f;
@ -492,6 +557,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(u32 *)CMSG_DATA(cmsg);
break;
case IPV6_2292HOPOPTS:
case IPV6_HOPOPTS:
if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
err = -EINVAL;
@ -512,7 +578,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
opt->hopopt = hdr;
break;
case IPV6_DSTOPTS:
case IPV6_2292DSTOPTS:
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
err = -EINVAL;
goto exit_f;
@ -536,6 +602,33 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
opt->dst1opt = hdr;
break;
case IPV6_DSTOPTS:
case IPV6_RTHDRDSTOPTS:
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) {
err = -EINVAL;
goto exit_f;
}
hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg);
len = ((hdr->hdrlen + 1) << 3);
if (cmsg->cmsg_len < CMSG_LEN(len)) {
err = -EINVAL;
goto exit_f;
}
if (!capable(CAP_NET_RAW)) {
err = -EPERM;
goto exit_f;
}
if (cmsg->cmsg_type == IPV6_DSTOPTS) {
opt->opt_flen += len;
opt->dst1opt = hdr;
} else {
opt->opt_nflen += len;
opt->dst0opt = hdr;
}
break;
case IPV6_2292RTHDR:
case IPV6_RTHDR:
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) {
err = -EINVAL;
@ -568,7 +661,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
opt->opt_nflen += len;
opt->srcrt = rthdr;
if (opt->dst1opt) {
if (cmsg->cmsg_type == IPV6_2292RTHDR && opt->dst1opt) {
int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3);
opt->opt_nflen += dsthdrlen;
@ -579,6 +672,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
break;
case IPV6_2292HOPLIMIT:
case IPV6_HOPLIMIT:
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) {
err = -EINVAL;

107
net/ipv6/exthdrs.c
View File

@ -164,6 +164,7 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp, unsigned int *nhoffp)
return -1;
}
opt->lastopt = skb->h.raw - skb->nh.raw;
opt->dst1 = skb->h.raw - skb->nh.raw;
if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
@ -243,6 +244,7 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp, unsigned int *nhoffp)
looped_back:
if (hdr->segments_left == 0) {
opt->lastopt = skb->h.raw - skb->nh.raw;
opt->srcrt = skb->h.raw - skb->nh.raw;
skb->h.raw += (hdr->hdrlen + 1) << 3;
opt->dst0 = opt->dst1;
@ -539,10 +541,15 @@ void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
u8 *proto,
struct in6_addr **daddr)
{
if (opt->srcrt)
if (opt->srcrt) {
ipv6_push_rthdr(skb, proto, opt->srcrt, daddr);
if (opt->dst0opt)
ipv6_push_exthdr(skb, proto, NEXTHDR_DEST, opt->dst0opt);
/*
* IPV6_RTHDRDSTOPTS is ignored
* unless IPV6_RTHDR is set (RFC3542).
*/
if (opt->dst0opt)
ipv6_push_exthdr(skb, proto, NEXTHDR_DEST, opt->dst0opt);
}
if (opt->hopopt)
ipv6_push_exthdr(skb, proto, NEXTHDR_HOP, opt->hopopt);
}
@ -573,3 +580,97 @@ ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt)
}
return opt2;
}
static int ipv6_renew_option(void *ohdr,
struct ipv6_opt_hdr __user *newopt, int newoptlen,
int inherit,
struct ipv6_opt_hdr **hdr,
char **p)
{
if (inherit) {
if (ohdr) {
memcpy(*p, ohdr, ipv6_optlen((struct ipv6_opt_hdr *)ohdr));
*hdr = (struct ipv6_opt_hdr *)*p;
*p += CMSG_ALIGN(ipv6_optlen(*(struct ipv6_opt_hdr **)hdr));
}
} else {
if (newopt) {
if (copy_from_user(*p, newopt, newoptlen))
return -EFAULT;
*hdr = (struct ipv6_opt_hdr *)*p;
if (ipv6_optlen(*(struct ipv6_opt_hdr **)hdr) > newoptlen)
return -EINVAL;
*p += CMSG_ALIGN(newoptlen);
}
}
return 0;
}
struct ipv6_txoptions *
ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
int newtype,
struct ipv6_opt_hdr __user *newopt, int newoptlen)
{
int tot_len = 0;
char *p;
struct ipv6_txoptions *opt2;
int err;
if (newtype != IPV6_HOPOPTS && opt->hopopt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->hopopt));
if (newtype != IPV6_RTHDRDSTOPTS && opt->dst0opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst0opt));
if (newtype != IPV6_RTHDR && opt->srcrt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->srcrt));
if (newtype != IPV6_DSTOPTS && opt->dst1opt)
tot_len += CMSG_ALIGN(ipv6_optlen(opt->dst1opt));
if (newopt && newoptlen)
tot_len += CMSG_ALIGN(newoptlen);
if (!tot_len)
return NULL;
opt2 = sock_kmalloc(sk, tot_len, GFP_ATOMIC);
if (!opt2)
return ERR_PTR(-ENOBUFS);
memset(opt2, 0, tot_len);
opt2->tot_len = tot_len;
p = (char *)(opt2 + 1);
err = ipv6_renew_option(opt->hopopt, newopt, newoptlen,
newtype != IPV6_HOPOPTS,
&opt2->hopopt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt->dst0opt, newopt, newoptlen,
newtype != IPV6_RTHDRDSTOPTS,
&opt2->dst0opt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt->srcrt, newopt, newoptlen,
newtype != IPV6_RTHDR,
(struct ipv6_opt_hdr **)opt2->srcrt, &p);
if (err)
goto out;
err = ipv6_renew_option(opt->dst1opt, newopt, newoptlen,
newtype != IPV6_DSTOPTS,
&opt2->dst1opt, &p);
if (err)
goto out;
opt2->opt_nflen = (opt2->hopopt ? ipv6_optlen(opt2->hopopt) : 0) +
(opt2->dst0opt ? ipv6_optlen(opt2->dst0opt) : 0) +
(opt2->srcrt ? ipv6_optlen(opt2->srcrt) : 0);
opt2->opt_flen = (opt2->dst1opt ? ipv6_optlen(opt2->dst1opt) : 0);
return opt2;
out:
sock_kfree_s(sk, p, tot_len);
return ERR_PTR(err);
}

12
net/ipv6/ip6_flowlabel.c
View File

@ -225,16 +225,20 @@ struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
struct ip6_flowlabel * fl,
struct ipv6_txoptions * fopt)
{
struct ipv6_txoptions * fl_opt = fl->opt;
struct ipv6_txoptions * fl_opt = fl ? fl->opt : NULL;
if (fopt == NULL || fopt->opt_flen == 0)
return fl_opt;
if (fopt == NULL || fopt->opt_flen == 0) {
if (!fl_opt || !fl_opt->dst0opt || fl_opt->srcrt)
return fl_opt;
}
if (fl_opt != NULL) {
opt_space->hopopt = fl_opt->hopopt;
opt_space->dst0opt = fl_opt->dst0opt;
opt_space->dst0opt = fl_opt->srcrt ? fl_opt->dst0opt : NULL;
opt_space->srcrt = fl_opt->srcrt;
opt_space->opt_nflen = fl_opt->opt_nflen;
if (fl_opt->dst0opt && !fl_opt->srcrt)
opt_space->opt_nflen -= ipv6_optlen(fl_opt->dst0opt);
} else {
if (fopt->opt_nflen == 0)
return fopt;

164
net/ipv6/ipv6_sockglue.c
View File

@ -210,39 +210,127 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
retv = 0;
break;
case IPV6_PKTINFO:
case IPV6_RECVPKTINFO:
np->rxopt.bits.rxinfo = valbool;
retv = 0;
break;
case IPV6_2292PKTINFO:
np->rxopt.bits.rxoinfo = valbool;
retv = 0;
break;
case IPV6_HOPLIMIT:
case IPV6_RECVHOPLIMIT:
np->rxopt.bits.rxhlim = valbool;
retv = 0;
break;
case IPV6_RTHDR:
case IPV6_2292HOPLIMIT:
np->rxopt.bits.rxohlim = valbool;
retv = 0;
break;
case IPV6_RECVRTHDR:
if (val < 0 || val > 2)
goto e_inval;
np->rxopt.bits.srcrt = val;
retv = 0;
break;
case IPV6_HOPOPTS:
case IPV6_2292RTHDR:
if (val < 0 || val > 2)
goto e_inval;
np->rxopt.bits.osrcrt = val;
retv = 0;
break;
case IPV6_RECVHOPOPTS:
np->rxopt.bits.hopopts = valbool;
retv = 0;
break;
case IPV6_DSTOPTS:
case IPV6_2292HOPOPTS:
np->rxopt.bits.ohopopts = valbool;
retv = 0;
break;
case IPV6_RECVDSTOPTS:
np->rxopt.bits.dstopts = valbool;
retv = 0;
break;
case IPV6_2292DSTOPTS:
np->rxopt.bits.odstopts = valbool;
retv = 0;
break;
case IPV6_FLOWINFO:
np->rxopt.bits.rxflow = valbool;
retv = 0;
break;
case IPV6_PKTOPTIONS:
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
struct ipv6_txoptions *opt;
if (optlen == 0)
optval = 0;
/* hop-by-hop / destination options are privileged option */
retv = -EPERM;
if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
break;
retv = -EINVAL;
if (optlen & 0x7 || optlen > 8 * 255)
break;
opt = ipv6_renew_options(sk, np->opt, optname,
(struct ipv6_opt_hdr __user *)optval,
optlen);
if (IS_ERR(opt)) {
retv = PTR_ERR(opt);
break;
}
/* routing header option needs extra check */
if (optname == IPV6_RTHDR && opt->srcrt) {
struct ipv6_rt_hdr *rthdr = opt->srcrt;
if (rthdr->type)
goto sticky_done;
if ((rthdr->hdrlen & 1) ||
(rthdr->hdrlen >> 1) != rthdr->segments_left)
goto sticky_done;
}
retv = 0;
if (sk->sk_type == SOCK_STREAM) {
if (opt) {
struct tcp_sock *tp = tcp_sk(sk);
if (!((1 << sk->sk_state) &
(TCPF_LISTEN | TCPF_CLOSE))
&& inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
tp->ext_header_len = opt->opt_flen + opt->opt_nflen;
tcp_sync_mss(sk, tp->pmtu_cookie);
}
}
opt = xchg(&np->opt, opt);
sk_dst_reset(sk);
} else {
write_lock(&sk->sk_dst_lock);
opt = xchg(&np->opt, opt);
write_unlock(&sk->sk_dst_lock);
sk_dst_reset(sk);
}
sticky_done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_2292PKTOPTIONS:
{
struct ipv6_txoptions *opt = NULL;
struct msghdr msg;
@ -529,6 +617,17 @@ e_inval:
return -EINVAL;
}
int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_opt_hdr *hdr,
char __user *optval, int len)
{
if (!hdr)
return 0;
len = min_t(int, len, ipv6_optlen(hdr));
if (copy_to_user(optval, hdr, ipv6_optlen(hdr)))
return -EFAULT;
return len;
}
int ipv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
@ -567,7 +666,7 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
return err;
}
case IPV6_PKTOPTIONS:
case IPV6_2292PKTOPTIONS:
{
struct msghdr msg;
struct sk_buff *skb;
@ -601,6 +700,16 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxoinfo) {
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = np->mcast_oif;
ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {
int hlim = np->mcast_hops;
put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
}
len -= msg.msg_controllen;
return put_user(len, optlen);
@ -625,26 +734,59 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
val = np->ipv6only;
break;
case IPV6_PKTINFO:
case IPV6_RECVPKTINFO:
val = np->rxopt.bits.rxinfo;
break;
case IPV6_HOPLIMIT:
case IPV6_2292PKTINFO:
val = np->rxopt.bits.rxoinfo;
break;
case IPV6_RECVHOPLIMIT:
val = np->rxopt.bits.rxhlim;
break;
case IPV6_RTHDR:
case IPV6_2292HOPLIMIT:
val = np->rxopt.bits.rxohlim;
break;
case IPV6_RECVRTHDR:
val = np->rxopt.bits.srcrt;
break;
case IPV6_2292RTHDR:
val = np->rxopt.bits.osrcrt;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
{
lock_sock(sk);
len = ipv6_getsockopt_sticky(sk, np->opt->hopopt,
optval, len);
release_sock(sk);
return put_user(len, optlen);
}
case IPV6_RECVHOPOPTS:
val = np->rxopt.bits.hopopts;
break;
case IPV6_DSTOPTS:
case IPV6_2292HOPOPTS:
val = np->rxopt.bits.ohopopts;
break;
case IPV6_RECVDSTOPTS:
val = np->rxopt.bits.dstopts;
break;
case IPV6_2292DSTOPTS:
val = np->rxopt.bits.odstopts;
break;
case IPV6_FLOWINFO:
val = np->rxopt.bits.rxflow;
break;

3
net/ipv6/raw.c
View File

@ -755,8 +755,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = fl6_merge_options(&opt_space, flowlabel, opt);
fl.proto = proto;
rawv6_probe_proto_opt(&fl, msg);

21
net/ipv6/tcp_ipv6.c
View File

@ -849,7 +849,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
if (dst == NULL) {
opt = np->opt;
if (opt == NULL &&
np->rxopt.bits.srcrt == 2 &&
np->rxopt.bits.osrcrt == 2 &&
treq->pktopts) {
struct sk_buff *pktopts = treq->pktopts;
struct inet6_skb_parm *rxopt = IP6CB(pktopts);
@ -915,11 +915,10 @@ static int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
struct inet6_skb_parm *opt = IP6CB(skb);
if (np->rxopt.all) {
if ((opt->hop && np->rxopt.bits.hopopts) ||
((IPV6_FLOWINFO_MASK&*(u32*)skb->nh.raw) &&
np->rxopt.bits.rxflow) ||
(opt->srcrt && np->rxopt.bits.srcrt) ||
((opt->dst1 || opt->dst0) && np->rxopt.bits.dstopts))
if ((opt->hop && (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) ||
((IPV6_FLOWINFO_MASK & *(u32*)skb->nh.raw) && np->rxopt.bits.rxflow) ||
(opt->srcrt && (np->rxopt.bits.srcrt || np->rxopt.bits.osrcrt)) ||
((opt->dst1 || opt->dst0) && (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
return 1;
}
return 0;
@ -1190,8 +1189,8 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
TCP_ECN_create_request(req, skb->h.th);
treq->pktopts = NULL;
if (ipv6_opt_accepted(sk, skb) ||
np->rxopt.bits.rxinfo ||
np->rxopt.bits.rxhlim) {
np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim) {
atomic_inc(&skb->users);
treq->pktopts = skb;
}
@ -1288,7 +1287,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
if (sk_acceptq_is_full(sk))
goto out_overflow;
if (np->rxopt.bits.srcrt == 2 &&
if (np->rxopt.bits.osrcrt == 2 &&
opt == NULL && treq->pktopts) {
struct inet6_skb_parm *rxopt = IP6CB(treq->pktopts);
if (rxopt->srcrt)
@ -1544,9 +1543,9 @@ ipv6_pktoptions:
tp = tcp_sk(sk);
if (TCP_SKB_CB(opt_skb)->end_seq == tp->rcv_nxt &&
!((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) {
if (np->rxopt.bits.rxinfo)
if (np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo)
np->mcast_oif = inet6_iif(opt_skb);
if (np->rxopt.bits.rxhlim)
if (np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim)
np->mcast_hops = opt_skb->nh.ipv6h->hop_limit;
if (ipv6_opt_accepted(sk, opt_skb)) {
skb_set_owner_r(opt_skb, sk);

3
net/ipv6/udp.c
View File

@ -773,8 +773,7 @@ do_udp_sendmsg:
}
if (opt == NULL)
opt = np->opt;
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = fl6_merge_options(&opt_space, flowlabel, opt);
fl->proto = IPPROTO_UDP;
ipv6_addr_copy(&fl->fl6_dst, daddr);