static bool
socket_mt6_v1_v2(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo;
struct sock *sk = skb->sk;
if (!sk)
sk = xt_socket_lookup_slow_v6(skb, par->in);
if (sk) {
bool wildcard;
bool transparent = true;
/* Ignore sockets listening on INADDR_ANY
* unless XT_SOCKET_NOWILDCARD is set
*/
wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
sk_fullsock(sk) &&
ipv6_addr_any(&sk->sk_v6_rcv_saddr));
/* Ignore non-transparent sockets,
* if XT_SOCKET_TRANSPARENT is used
*/
if (info->flags & XT_SOCKET_TRANSPARENT)
transparent = xt_socket_sk_is_transparent(sk);
if (sk != skb->sk)
sock_gen_put(sk);
if (wildcard || !transparent)
sk = NULL;
}
return sk != NULL;
}
static bool
socket_match(const struct sk_buff *skb, struct xt_action_param *par,
const struct xt_socket_mtinfo1 *info)
{
struct sk_buff *pskb = (struct sk_buff *)skb;
struct sock *sk = skb->sk;
if (!sk)
sk = xt_socket_lookup_slow_v4(par->net, skb, par->in);
if (sk) {
bool wildcard;
bool transparent = true;
/* Ignore sockets listening on INADDR_ANY,
* unless XT_SOCKET_NOWILDCARD is set
*/
wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
sk_fullsock(sk) &&
inet_sk(sk)->inet_rcv_saddr == 0);
/* Ignore non-transparent sockets,
* if XT_SOCKET_TRANSPARENT is used
*/
if (info->flags & XT_SOCKET_TRANSPARENT)
transparent = xt_socket_sk_is_transparent(sk);
if (info->flags & XT_SOCKET_RESTORESKMARK && !wildcard &&
transparent)
pskb->mark = sk->sk_mark;
if (sk != skb->sk)
sock_gen_put(sk);
if (wildcard || !transparent)
sk = NULL;
}
return sk != NULL;
}
