{-1, NULL}
};
-static int ipv6_destopt_rcv(struct sk_buff **skbp, unsigned int *nhoffp)
+static int ipv6_destopt_rcv(struct sk_buff **skbp)
{
struct sk_buff *skb = *skbp;
struct inet6_skb_parm *opt = IP6CB(skb);
if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
skb->h.raw += ((skb->h.raw[1]+1)<<3);
- *nhoffp = opt->dst1;
+ opt->nhoff = opt->dst1;
return 1;
}
NONE header. No data in packet.
********************************/
-static int ipv6_nodata_rcv(struct sk_buff **skbp, unsigned int *nhoffp)
+static int ipv6_nodata_rcv(struct sk_buff **skbp)
{
struct sk_buff *skb = *skbp;
Routing header.
********************************/
-static int ipv6_rthdr_rcv(struct sk_buff **skbp, unsigned int *nhoffp)
+static int ipv6_rthdr_rcv(struct sk_buff **skbp)
{
struct sk_buff *skb = *skbp;
struct inet6_skb_parm *opt = IP6CB(skb);
skb->h.raw += (hdr->hdrlen + 1) << 3;
opt->dst0 = opt->dst1;
opt->dst1 = 0;
- *nhoffp = (&hdr->nexthdr) - skb->nh.raw;
+ opt->nhoff = (&hdr->nexthdr) - skb->nh.raw;
return 1;
}
return opt;
}
+EXPORT_SYMBOL_GPL(ipv6_invert_rthdr);
+
/**********************************
Hop-by-hop options.
**********************************/
{ -1, }
};
-int ipv6_parse_hopopts(struct sk_buff *skb, int nhoff)
+int ipv6_parse_hopopts(struct sk_buff *skb)
{
- IP6CB(skb)->hop = sizeof(struct ipv6hdr);
- if (ip6_parse_tlv(tlvprochopopt_lst, skb))
- return sizeof(struct ipv6hdr);
+ struct inet6_skb_parm *opt = IP6CB(skb);
+
+ /*
+ * skb->nh.raw is equal to skb->data, and
+ * skb->h.raw - skb->nh.raw is always equal to
+ * sizeof(struct ipv6hdr) by definition of
+ * hop-by-hop options.
+ */
+ if (!pskb_may_pull(skb, sizeof(struct ipv6hdr) + 8) ||
+ !pskb_may_pull(skb, sizeof(struct ipv6hdr) + ((skb->h.raw[1] + 1) << 3))) {
+ kfree_skb(skb);
+ return -1;
+ }
+
+ opt->hop = sizeof(struct ipv6hdr);
+ if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {
+ skb->h.raw += (skb->h.raw[1]+1)<<3;
+ opt->nhoff = sizeof(struct ipv6hdr);
+ return 1;
+ }
return -1;
}
return opt2;
}
+EXPORT_SYMBOL_GPL(ipv6_dup_options);
+
static int ipv6_renew_option(void *ohdr,
struct ipv6_opt_hdr __user *newopt, int newoptlen,
int inherit,
if (!tot_len)
return NULL;
+ tot_len += sizeof(*opt2);
opt2 = sock_kmalloc(sk, tot_len, GFP_ATOMIC);
if (!opt2)
return ERR_PTR(-ENOBUFS);
return opt2;
out:
- sock_kfree_s(sk, p, tot_len);
+ sock_kfree_s(sk, opt2, opt2->tot_len);
return ERR_PTR(err);
}
+struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+ struct ipv6_txoptions *opt)
+{
+ /*
+ * ignore the dest before srcrt unless srcrt is being included.
+ * --yoshfuji
+ */
+ if (opt && opt->dst0opt && !opt->srcrt) {
+ if (opt_space != opt) {
+ memcpy(opt_space, opt, sizeof(*opt_space));
+ opt = opt_space;
+ }
+ opt->opt_nflen -= ipv6_optlen(opt->dst0opt);
+ opt->dst0opt = NULL;
+ }
+
+ return opt;
+}
+