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l2tp: handle PPPIOC[GS]MRU and PPPIOC[GS]FLAGS in pppol2tp_ioctl()

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Let pppol2tp_ioctl() handle ioctl commands directly. It still relies on
pppol2tp_{session,tunnel}_ioctl() for PPPIOCGL2TPSTATS.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guillaume Nault 2018-08-10 13:21:58 +02:00 committed by David S. Miller
parent bdd0292f96
commit 79e6760e64
1 changed files with 44 additions and 29 deletions
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73
net/l2tp/l2tp_ppp.c
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@ -1045,7 +1045,6 @@ static int pppol2tp_session_ioctl(struct l2tp_session *session,
{
int err = 0;
struct sock *sk;
int val = (int) arg;
struct l2tp_tunnel *tunnel = session->tunnel;
struct pppol2tp_ioc_stats stats;
@ -1058,22 +1057,6 @@ static int pppol2tp_session_ioctl(struct l2tp_session *session,
return -EBADR;
switch (cmd) {
case PPPIOCGMRU:
case PPPIOCGFLAGS:
err = -EFAULT;
if (put_user(0, (int __user *)arg))
break;
err = 0;
break;
case PPPIOCSMRU:
case PPPIOCSFLAGS:
err = -EFAULT;
if (get_user(val, (int __user *)arg))
break;
err = 0;
break;
case PPPIOCGL2TPSTATS:
err = -ENXIO;
if (!(sk->sk_state & PPPOX_CONNECTED))
@ -1180,23 +1163,55 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd,
unsigned long arg)
{
struct l2tp_session *session;
struct l2tp_tunnel *tunnel;
int val;
session = sock->sk->sk_user_data;
if (!session)
return -ENOTCONN;
switch (cmd) {
case PPPIOCGMRU:
case PPPIOCGFLAGS:
session = sock->sk->sk_user_data;
if (!session)
return -ENOTCONN;
/* Special case: if session's session_id is zero, treat ioctl as a
* tunnel ioctl
*/
if ((session->session_id == 0) &&
(session->peer_session_id == 0)) {
tunnel = session->tunnel;
/* Not defined for tunnels */
if (!session->session_id && !session->peer_session_id)
return -ENOSYS;
return pppol2tp_tunnel_ioctl(tunnel, cmd, arg);
if (put_user(0, (int __user *)arg))
return -EFAULT;
break;
case PPPIOCSMRU:
case PPPIOCSFLAGS:
session = sock->sk->sk_user_data;
if (!session)
return -ENOTCONN;
/* Not defined for tunnels */
if (!session->session_id && !session->peer_session_id)
return -ENOSYS;
if (get_user(val, (int __user *)arg))
return -EFAULT;
break;
case PPPIOCGL2TPSTATS:
session = sock->sk->sk_user_data;
if (!session)
return -ENOTCONN;
/* Session 0 represents the parent tunnel */
if (!session->session_id && !session->peer_session_id)
return pppol2tp_tunnel_ioctl(session->tunnel, cmd,
arg);
else
return pppol2tp_session_ioctl(session, cmd, arg);
break;
default:
return -ENOSYS;
}
return pppol2tp_session_ioctl(session, cmd, arg);
return 0;
}
/*****************************************************************************