int owner; /* pid that opened the socket */
struct mutex sk_lock; /* Protects .sk */
- struct sock __rcu *sk; /* Pointer to the session
- * PPPoX socket */
+ struct sock __rcu *sk; /* Pointer to the session PPPoX socket */
struct sock *__sk; /* Copy of .sk, for cleanup */
struct rcu_head rcu; /* For asynchronous release */
};
{
struct l2tp_session *session;
- if (sk == NULL)
+ if (!sk)
return NULL;
sock_hold(sk);
session = (struct l2tp_session *)(sk->sk_user_data);
- if (session == NULL) {
+ if (!session) {
+ sock_put(sk);
+ goto out;
+ }
+ if (WARN_ON(session->magic != L2TP_SESSION_MAGIC)) {
+ session = NULL;
sock_put(sk);
goto out;
}
-
- BUG_ON(session->magic != L2TP_SESSION_MAGIC);
out:
return session;
*/
rcu_read_lock();
sk = rcu_dereference(ps->sk);
- if (sk == NULL)
+ if (!sk)
goto no_sock;
/* If the first two bytes are 0xFF03, consider that it is the PPP's
/* Get session and tunnel contexts */
error = -EBADF;
session = pppol2tp_sock_to_session(sk);
- if (session == NULL)
+ if (!session)
goto error;
tunnel = session->tunnel;
*/
static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
{
- struct sock *sk = (struct sock *) chan->private;
+ struct sock *sk = (struct sock *)chan->private;
struct l2tp_session *session;
struct l2tp_tunnel *tunnel;
int uhlen, headroom;
/* Get session and tunnel contexts from the socket */
session = pppol2tp_sock_to_session(sk);
- if (session == NULL)
+ if (!session)
goto abort;
tunnel = session->tunnel;
if (session) {
sk->sk_user_data = NULL;
- BUG_ON(session->magic != L2TP_SESSION_MAGIC);
+ if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))
+ return;
l2tp_session_dec_refcount(session);
}
}
* tunnel id.
*/
if (!info.session_id && !info.peer_session_id) {
- if (tunnel == NULL) {
+ if (!tunnel) {
struct l2tp_tunnel_cfg tcfg = {
.encap = L2TP_ENCAPTYPE_UDP,
.debug = 0,
} else {
/* Error if we can't find the tunnel */
error = -ENOENT;
- if (tunnel == NULL)
+ if (!tunnel)
goto end;
/* Error if socket is not prepped */
- if (tunnel->sock == NULL)
+ if (!tunnel->sock)
goto end;
}
* the internal context for use by ioctl() and sockopt()
* handlers.
*/
- if ((session->session_id == 0) &&
- (session->peer_session_id == 0)) {
+ if (session->session_id == 0 && session->peer_session_id == 0) {
error = 0;
goto out_no_ppp;
}
struct pppol2tp_session *pls;
error = -ENOTCONN;
- if (sk == NULL)
+ if (!sk)
goto end;
if (!(sk->sk_state & PPPOX_CONNECTED))
goto end;
error = -EBADF;
session = pppol2tp_sock_to_session(sk);
- if (session == NULL)
+ if (!session)
goto end;
pls = l2tp_session_priv(session);
tunnel = session->tunnel;
inet = inet_sk(tunnel->sock);
- if ((tunnel->version == 2) && (tunnel->sock->sk_family == AF_INET)) {
+ if (tunnel->version == 2 && tunnel->sock->sk_family == AF_INET) {
struct sockaddr_pppol2tp sp;
+
len = sizeof(sp);
memset(&sp, 0, len);
sp.sa_family = AF_PPPOX;
sp.pppol2tp.addr.sin_addr.s_addr = inet->inet_daddr;
memcpy(uaddr, &sp, len);
#if IS_ENABLED(CONFIG_IPV6)
- } else if ((tunnel->version == 2) &&
- (tunnel->sock->sk_family == AF_INET6)) {
+ } else if (tunnel->version == 2 && tunnel->sock->sk_family == AF_INET6) {
struct sockaddr_pppol2tpin6 sp;
len = sizeof(sp);
memcpy(&sp.pppol2tp.addr.sin6_addr, &tunnel->sock->sk_v6_daddr,
sizeof(tunnel->sock->sk_v6_daddr));
memcpy(uaddr, &sp, len);
- } else if ((tunnel->version == 3) &&
- (tunnel->sock->sk_family == AF_INET6)) {
+ } else if (tunnel->version == 3 && tunnel->sock->sk_family == AF_INET6) {
struct sockaddr_pppol2tpv3in6 sp;
len = sizeof(sp);
#endif
} else if (tunnel->version == 3) {
struct sockaddr_pppol2tpv3 sp;
+
len = sizeof(sp);
memset(&sp, 0, len);
sp.sa_family = AF_PPPOX;
switch (optname) {
case PPPOL2TP_SO_RECVSEQ:
- if ((val != 0) && (val != 1)) {
+ if (val != 0 && val != 1) {
err = -EINVAL;
break;
}
break;
case PPPOL2TP_SO_SENDSEQ:
- if ((val != 0) && (val != 1)) {
+ if (val != 0 && val != 1) {
err = -EINVAL;
break;
}
break;
case PPPOL2TP_SO_LNSMODE:
- if ((val != 0) && (val != 1)) {
+ if (val != 0 && val != 1) {
err = -EINVAL;
break;
}
* session or the special tunnel type.
*/
static int pppol2tp_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct l2tp_session *session;
if (optlen < sizeof(int))
return -EINVAL;
- if (get_user(val, (int __user *)optval))
+ if (copy_from_sockptr(&val, optval, sizeof(int)))
return -EFAULT;
err = -ENOTCONN;
- if (sk->sk_user_data == NULL)
+ if (!sk->sk_user_data)
goto end;
/* Get session context from the socket */
err = -EBADF;
session = pppol2tp_sock_to_session(sk);
- if (session == NULL)
+ if (!session)
goto end;
/* Special case: if session_id == 0x0000, treat as operation on tunnel
*/
- if ((session->session_id == 0) &&
- (session->peer_session_id == 0)) {
+ if (session->session_id == 0 && session->peer_session_id == 0) {
tunnel = session->tunnel;
err = pppol2tp_tunnel_setsockopt(sk, tunnel, optname, val);
} else {
break;
case PPPOL2TP_SO_REORDERTO:
- *val = (int) jiffies_to_msecs(session->reorder_timeout);
+ *val = (int)jiffies_to_msecs(session->reorder_timeout);
l2tp_info(session, L2TP_MSG_CONTROL,
"%s: get reorder_timeout=%d\n", session->name, *val);
break;
return -EINVAL;
err = -ENOTCONN;
- if (sk->sk_user_data == NULL)
+ if (!sk->sk_user_data)
goto end;
/* Get the session context */
err = -EBADF;
session = pppol2tp_sock_to_session(sk);
- if (session == NULL)
+ if (!session)
goto end;
/* Special case: if session_id == 0x0000, treat as operation on tunnel */
- if ((session->session_id == 0) &&
- (session->peer_session_id == 0)) {
+ if (session->session_id == 0 && session->peer_session_id == 0) {
tunnel = session->tunnel;
err = pppol2tp_tunnel_getsockopt(sk, tunnel, optname, &val);
if (err)
if (put_user(len, optlen))
goto end_put_sess;
- if (copy_to_user((void __user *) optval, &val, len))
+ if (copy_to_user((void __user *)optval, &val, len))
goto end_put_sess;
err = 0;
pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx);
pd->session_idx++;
- if (pd->session == NULL) {
+ if (!pd->session) {
pd->session_idx = 0;
pppol2tp_next_tunnel(net, pd);
}
if (!pos)
goto out;
- BUG_ON(m->private == NULL);
+ if (WARN_ON(!m->private)) {
+ pd = NULL;
+ goto out;
+ }
+
pd = m->private;
net = seq_file_net(m);
- if (pd->tunnel == NULL)
+ if (!pd->tunnel)
pppol2tp_next_tunnel(net, pd);
else
pppol2tp_next_session(net, pd);
/* NULL tunnel and session indicates end of list */
- if ((pd->tunnel == NULL) && (pd->session == NULL))
+ if (!pd->tunnel && !pd->session)
pd = NULL;
out:
if (tunnel->sock) {
struct inet_sock *inet = inet_sk(tunnel->sock);
+
ip = ntohl(inet->inet_saddr);
port = ntohs(inet->inet_sport);
}
user_data_ok = 'N';
}
- seq_printf(m, " SESSION '%s' %08X/%d %04X/%04X -> "
- "%04X/%04X %d %c\n",
+ seq_printf(m, " SESSION '%s' %08X/%d %04X/%04X -> %04X/%04X %d %c\n",
session->name, ip, port,
tunnel->tunnel_id,
session->session_id,
seq_puts(m, "PPPoL2TP driver info, " PPPOL2TP_DRV_VERSION "\n");
seq_puts(m, "TUNNEL name, user-data-ok session-count\n");
seq_puts(m, " debug tx-pkts/bytes/errs rx-pkts/bytes/errs\n");
- seq_puts(m, " SESSION name, addr/port src-tid/sid "
- "dest-tid/sid state user-data-ok\n");
+ seq_puts(m, " SESSION name, addr/port src-tid/sid dest-tid/sid state user-data-ok\n");
seq_puts(m, " mtu/mru/rcvseq/sendseq/lns debug reorderto\n");
seq_puts(m, " nr/ns tx-pkts/bytes/errs rx-pkts/bytes/errs\n");
goto out;
int err = 0;
pde = proc_create_net("pppol2tp", 0444, net->proc_net,
- &pppol2tp_seq_ops, sizeof(struct pppol2tp_seq_data));
+ &pppol2tp_seq_ops, sizeof(struct pppol2tp_seq_data));
if (!pde) {
err = -ENOMEM;
goto out;
projects / linux-2.6-microblaze.git / blobdiff