Commit 9c86dafe authored by YOSHIFUJI Hideaki / 吉藤英明's avatar YOSHIFUJI Hideaki / 吉藤英明 Committed by David S. Miller

ndisc: Introduce ndisc_fill_redirect_hdr_option().

Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6bce6b4e
......@@ -1341,6 +1341,19 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
icmpv6_notify(skb, NDISC_REDIRECT, 0, 0);
}
static u8 *ndisc_fill_redirect_hdr_option(u8 *opt, struct sk_buff *orig_skb,
int rd_len)
{
memset(opt, 0, 8);
*(opt++) = ND_OPT_REDIRECT_HDR;
*(opt++) = (rd_len >> 3);
opt += 6;
memcpy(opt, ipv6_hdr(orig_skb), rd_len - 8);
return opt + rd_len - 8;
}
void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
{
struct net_device *dev = skb->dev;
......@@ -1470,12 +1483,8 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
* build redirect option and copy skb over to the new packet.
*/
memset(opt, 0, 8);
*(opt++) = ND_OPT_REDIRECT_HDR;
*(opt++) = (rd_len >> 3);
opt += 6;
memcpy(opt, ipv6_hdr(skb), rd_len - 8);
if (rd_len)
opt = ndisc_fill_redirect_hdr_option(opt, skb, rd_len);
msg->icmph.icmp6_cksum = csum_ipv6_magic(&saddr_buf, &ipv6_hdr(skb)->saddr,
len, IPPROTO_ICMPV6,
......
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