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l2tp: remove pppol2tp_session_ioctl() 

pppol2tp_ioctl() has everything in place for handling PPPIOCGL2TPSTATS
on session sockets. We just need to copy the stats and set ->session_id.

As a side effect of sharing session and tunnel code, ->using_ipsec is
properly set even when the request was made using a session socket.

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 13:22:01 +02:00 committed by David S. Miller
parent 528534f0de
commit b0e29063dc
2 changed files with 4 additions and 48 deletions
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2
include/uapi/linux/ppp-ioctl.h
View File

@ -68,7 +68,7 @@ struct ppp_option_data {
struct pppol2tp_ioc_stats {
__u16 tunnel_id; /* redundant */
__u16 session_id; /* if zero, get tunnel stats */
__u32 using_ipsec:1; /* valid only for session_id == 0 */
__u32 using_ipsec:1;
__aligned_u64 tx_packets;
__aligned_u64 tx_bytes;
__aligned_u64 tx_errors;

50
net/l2tp/l2tp_ppp.c
View File

@ -1068,52 +1068,6 @@ static int pppol2tp_tunnel_copy_stats(struct pppol2tp_ioc_stats *stats,
return 0;
}
/* Session ioctl helper.
*/
static int pppol2tp_session_ioctl(struct l2tp_session *session,
unsigned int cmd, unsigned long arg)
{
int err = 0;
struct sock *sk;
struct l2tp_tunnel *tunnel = session->tunnel;
struct pppol2tp_ioc_stats stats;
l2tp_dbg(session, L2TP_MSG_CONTROL,
"%s: pppol2tp_session_ioctl(cmd=%#x, arg=%#lx)\n",
session->name, cmd, arg);
sk = pppol2tp_session_get_sock(session);
if (!sk)
return -EBADR;
switch (cmd) {
case PPPIOCGL2TPSTATS:
err = -ENXIO;
if (!(sk->sk_state & PPPOX_CONNECTED))
break;
memset(&stats, 0, sizeof(stats));
stats.tunnel_id = tunnel->tunnel_id;
stats.session_id = session->session_id;
pppol2tp_copy_stats(&stats, &session->stats);
if (copy_to_user((void __user *) arg, &stats,
sizeof(stats)))
break;
l2tp_info(session, L2TP_MSG_CONTROL, "%s: get L2TP stats\n",
session->name);
err = 0;
break;
default:
err = -ENOSYS;
break;
}
sock_put(sk);
return err;
}
static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd,
unsigned long arg)
{
@ -1172,7 +1126,9 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd,
stats.session_id = session_id;
} else {
return pppol2tp_session_ioctl(session, cmd, arg);
memset(&stats, 0, sizeof(stats));
pppol2tp_copy_stats(&stats, &session->stats);
stats.session_id = session->session_id;
}
stats.tunnel_id = session->tunnel->tunnel_id;
stats.using_ipsec = l2tp_tunnel_uses_xfrm(session->tunnel);