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

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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
Download Patch File Download Diff File Expand all files Collapse all files

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);