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authorTom Parkin <tparkin@katalix.com>2020-07-22 17:32:06 +0100
committerDavid S. Miller <davem@davemloft.net>2020-07-22 18:08:39 -0700
commit20dcb1107ab1a3423c72a88269b9775cc549262a (patch)
treef64cebd489d7eb4148c48e7cfa894bddc30b637e /net/l2tp/l2tp_core.c
parentb71a61ccfebb4ff733d2d9fc66cd5c75b7ae46a2 (diff)
l2tp: cleanup comments
Modify some l2tp comments to better adhere to kernel coding style, as reported by checkpatch.pl. Add descriptive comments for the l2tp per-net spinlocks to document their use. Fix an incorrect comment in l2tp_recv_common: RFC2661 section 5.4 states that: "The LNS controls enabling and disabling of sequence numbers by sending a data message with or without sequence numbers present at any time during the life of a session." l2tp handles this correctly in l2tp_recv_common, but the comment around the code was incorrect and confusing. Fix up the comment accordingly. Signed-off-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.c')
-rw-r--r--net/l2tp/l2tp_core.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 0992d5fab9b8..f5e314d8a02b 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/*
- * L2TP core.
+/* L2TP core.
*
* Copyright (c) 2008,2009,2010 Katalix Systems Ltd
*
@@ -102,8 +101,10 @@ static struct workqueue_struct *l2tp_wq;
static unsigned int l2tp_net_id;
struct l2tp_net {
struct list_head l2tp_tunnel_list;
+ /* Lock for write access to l2tp_tunnel_list */
spinlock_t l2tp_tunnel_list_lock;
struct hlist_head l2tp_session_hlist[L2TP_HASH_SIZE_2];
+ /* Lock for write access to l2tp_session_hlist */
spinlock_t l2tp_session_hlist_lock;
};
@@ -678,7 +679,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
}
if (L2TP_SKB_CB(skb)->has_seq) {
- /* Received a packet with sequence numbers. If we're the LNS,
+ /* Received a packet with sequence numbers. If we're the LAC,
* check if we sre sending sequence numbers and if not,
* configure it so.
*/
@@ -1604,7 +1605,7 @@ void __l2tp_session_unhash(struct l2tp_session *session)
EXPORT_SYMBOL_GPL(__l2tp_session_unhash);
/* This function is used by the netlink SESSION_DELETE command and by
- pseudowire modules.
+ * pseudowire modules.
*/
int l2tp_session_delete(struct l2tp_session *session)
{