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Merge git://git.skbuff.net/gitroot/yoshfuji/linux-2.6-git-rfc3542
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David S. Miller committed Sep 8, 2005
2 parents 42ca89c + 41a1f8e commit 2e66fc4
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Showing 13 changed files with 525 additions and 71 deletions.
36 changes: 30 additions & 6 deletions include/linux/in6.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand Down Expand Up @@ -198,4 +198,28 @@ 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
#define IPV6_RECVTCLASS 66
#define IPV6_TCLASS 67

#endif
15 changes: 12 additions & 3 deletions include/linux/ipv6.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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))
Expand Down Expand Up @@ -234,14 +235,20 @@ 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,
rxflow:1;
odstopts:1,
rxflow:1,
rxtclass:1;
} bits;
__u8 all;
__u16 all;
} rxopt;

/* sockopt flags */
Expand All @@ -250,6 +257,7 @@ struct ipv6_pinfo {
sndflow:1,
pmtudisc:2,
ipv6only:1;
__u8 tclass;

__u32 dst_cookie;

Expand All @@ -263,6 +271,7 @@ struct ipv6_pinfo {
struct ipv6_txoptions *opt;
struct rt6_info *rt;
int hop_limit;
int tclass;
} cork;
};

Expand Down
5 changes: 5 additions & 0 deletions include/net/ipv6.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -373,6 +377,7 @@ extern int ip6_append_data(struct sock *sk,
int length,
int transhdrlen,
int hlimit,
int tclass,
struct ipv6_txoptions *opt,
struct flowi *fl,
struct rt6_info *rt,
Expand Down
2 changes: 1 addition & 1 deletion include/net/transp_v6.h
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ extern int datagram_recv_ctl(struct sock *sk,
extern int datagram_send_ctl(struct msghdr *msg,
struct flowi *fl,
struct ipv6_txoptions *opt,
int *hlimit);
int *hlimit, int *tclass);

#define LOOPBACK4_IPV6 __constant_htonl(0x7f000006)

Expand Down
135 changes: 126 additions & 9 deletions net/ipv6/datagram.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -390,32 +390,101 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}

if (np->rxopt.bits.rxtclass) {
int tclass = (ntohl(*(u32 *)skb->nh.ipv6h) >> 20) & 0xff;
put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}

if (np->rxopt.bits.rxflow && (*(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);
}

/* 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;
}

int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
struct ipv6_txoptions *opt,
int *hlimit)
int *hlimit, int *tclass)
{
struct in6_pktinfo *src_info;
struct cmsghdr *cmsg;
Expand All @@ -438,6 +507,7 @@ 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;
Expand Down Expand Up @@ -492,6 +562,7 @@ 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;
Expand All @@ -512,7 +583,7 @@ 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;
Expand All @@ -536,6 +607,33 @@ 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;
Expand Down Expand Up @@ -568,7 +666,7 @@ 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;
Expand All @@ -579,6 +677,7 @@ 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;
Expand All @@ -588,6 +687,24 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
*hlimit = *(int *)CMSG_DATA(cmsg);
break;

case IPV6_TCLASS:
{
int tc;

err = -EINVAL;
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) {
goto exit_f;
}

tc = *(int *)CMSG_DATA(cmsg);
if (tc < 0 || tc > 0xff)
goto exit_f;

err = 0;
*tclass = tc;

break;
}
default:
LIMIT_NETDEBUG(KERN_DEBUG "invalid cmsg type: %d\n",
cmsg->cmsg_type);
Expand Down
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