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[NET]: Introducing socket mark socket option.

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A userspace program may wish to set the mark for each packets its send
without using the netfilter MARK target. Changing the mark can be used
for mark based routing without netfilter or for packet filtering.

It requires CAP_NET_ADMIN capability.

Signed-off-by: Laszlo Attila Toth <panther@balabit.hu>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Laszlo Attila Toth 2008-01-30 19:08:16 -08:00 • committed by David S. Miller
parent 036c2e27bc
commit 4a19ec5800
27 changed files with 65 additions and 0 deletions
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3
net/ipv6/raw.c
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@ -641,6 +641,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
skb_reserve(skb, hh_len);
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
skb->dst = dst_clone(&rt->u.dst);
skb_put(skb, length);
@ -767,6 +768,8 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
*/
memset(&fl, 0, sizeof(fl));
fl.mark = sk->sk_mark;
if (sin6) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;