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-rw-r--r--net/l2tp/l2tp_core.c30
-rw-r--r--net/l2tp/l2tp_core.h1
-rw-r--r--net/l2tp/l2tp_netlink.c4
-rw-r--r--net/l2tp/l2tp_ppp.c16
4 files changed, 16 insertions, 35 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 735d0f6..47f7a54 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -112,7 +112,6 @@ struct l2tp_net {
spinlock_t l2tp_session_hlist_lock;
};
-static void l2tp_session_set_header_len(struct l2tp_session *session, int version);
static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel);
static inline struct l2tp_tunnel *l2tp_tunnel(struct sock *sk)
@@ -1131,7 +1130,7 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
/* Queue the packet to IP for output */
skb->local_df = 1;
#if IS_ENABLED(CONFIG_IPV6)
- if (skb->sk->sk_family == PF_INET6 && !tunnel->v4mapped)
+ if (tunnel->sock->sk_family == PF_INET6 && !tunnel->v4mapped)
error = inet6_csk_xmit(skb, NULL);
else
#endif
@@ -1151,23 +1150,6 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
return 0;
}
-/* Automatically called when the skb is freed.
- */
-static void l2tp_sock_wfree(struct sk_buff *skb)
-{
- sock_put(skb->sk);
-}
-
-/* For data skbs that we transmit, we associate with the tunnel socket
- * but don't do accounting.
- */
-static inline void l2tp_skb_set_owner_w(struct sk_buff *skb, struct sock *sk)
-{
- sock_hold(sk);
- skb->sk = sk;
- skb->destructor = l2tp_sock_wfree;
-}
-
#if IS_ENABLED(CONFIG_IPV6)
static void l2tp_xmit_ipv6_csum(struct sock *sk, struct sk_buff *skb,
int udp_len)
@@ -1221,7 +1203,6 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
return NET_XMIT_DROP;
}
- skb_orphan(skb);
/* Setup L2TP header */
session->build_header(session, __skb_push(skb, hdr_len));
@@ -1287,8 +1268,6 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
break;
}
- l2tp_skb_set_owner_w(skb, sk);
-
l2tp_xmit_core(session, skb, fl, data_len);
out_unlock:
bh_unlock_sock(sk);
@@ -1809,8 +1788,6 @@ void l2tp_session_free(struct l2tp_session *session)
}
kfree(session);
-
- return;
}
EXPORT_SYMBOL_GPL(l2tp_session_free);
@@ -1863,7 +1840,7 @@ EXPORT_SYMBOL_GPL(l2tp_session_delete);
/* We come here whenever a session's send_seq, cookie_len or
* l2specific_len parameters are set.
*/
-static void l2tp_session_set_header_len(struct l2tp_session *session, int version)
+void l2tp_session_set_header_len(struct l2tp_session *session, int version)
{
if (version == L2TP_HDR_VER_2) {
session->hdr_len = 6;
@@ -1876,6 +1853,7 @@ static void l2tp_session_set_header_len(struct l2tp_session *session, int versio
}
}
+EXPORT_SYMBOL_GPL(l2tp_session_set_header_len);
struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg)
{
@@ -2016,7 +1994,7 @@ static int __init l2tp_init(void)
if (rc)
goto out;
- l2tp_wq = alloc_workqueue("l2tp", WQ_NON_REENTRANT | WQ_UNBOUND, 0);
+ l2tp_wq = alloc_workqueue("l2tp", WQ_UNBOUND, 0);
if (!l2tp_wq) {
pr_err("alloc_workqueue failed\n");
rc = -ENOMEM;
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index 1f01ba3..3f93ccd 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -263,6 +263,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
int length, int (*payload_hook)(struct sk_buff *skb));
int l2tp_session_queue_purge(struct l2tp_session *session);
int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb);
+void l2tp_session_set_header_len(struct l2tp_session *session, int version);
int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb,
int hdr_len);
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 4cfd722..bd7387a 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -578,8 +578,10 @@ static int l2tp_nl_cmd_session_modify(struct sk_buff *skb, struct genl_info *inf
if (info->attrs[L2TP_ATTR_RECV_SEQ])
session->recv_seq = nla_get_u8(info->attrs[L2TP_ATTR_RECV_SEQ]);
- if (info->attrs[L2TP_ATTR_SEND_SEQ])
+ if (info->attrs[L2TP_ATTR_SEND_SEQ]) {
session->send_seq = nla_get_u8(info->attrs[L2TP_ATTR_SEND_SEQ]);
+ l2tp_session_set_header_len(session, session->tunnel->version);
+ }
if (info->attrs[L2TP_ATTR_LNS_MODE])
session->lns_mode = nla_get_u8(info->attrs[L2TP_ATTR_LNS_MODE]);
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index be5fadf..d276e2d 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -254,12 +254,14 @@ static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int
po = pppox_sk(sk);
ppp_input(&po->chan, skb);
} else {
- l2tp_info(session, PPPOL2TP_MSG_DATA, "%s: socket not bound\n",
- session->name);
+ l2tp_dbg(session, PPPOL2TP_MSG_DATA,
+ "%s: recv %d byte data frame, passing to L2TP socket\n",
+ session->name, data_len);
- /* Not bound. Nothing we can do, so discard. */
- atomic_long_inc(&session->stats.rx_errors);
- kfree_skb(skb);
+ if (sock_queue_rcv_skb(sk, skb) < 0) {
+ atomic_long_inc(&session->stats.rx_errors);
+ kfree_skb(skb);
+ }
}
return;
@@ -454,13 +456,11 @@ static void pppol2tp_session_close(struct l2tp_session *session)
BUG_ON(session->magic != L2TP_SESSION_MAGIC);
-
if (sock) {
inet_shutdown(sock, 2);
/* Don't let the session go away before our socket does */
l2tp_session_inc_refcount(session);
}
- return;
}
/* Really kill the session socket. (Called from sock_put() if
@@ -474,7 +474,6 @@ static void pppol2tp_session_destruct(struct sock *sk)
BUG_ON(session->magic != L2TP_SESSION_MAGIC);
l2tp_session_dec_refcount(session);
}
- return;
}
/* Called when the PPPoX socket (session) is closed.
@@ -1312,6 +1311,7 @@ static int pppol2tp_session_setsockopt(struct sock *sk,
po->chan.hdrlen = val ? PPPOL2TP_L2TP_HDR_SIZE_SEQ :
PPPOL2TP_L2TP_HDR_SIZE_NOSEQ;
}
+ l2tp_session_set_header_len(session, session->tunnel->version);
l2tp_info(session, PPPOL2TP_MSG_CONTROL,
"%s: set send_seq=%d\n",
session->name, session->send_seq);
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