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l2tp: don't export __l2tp_session_unhash 

When __l2tp_session_unhash was first added it was used outside of
l2tp_core.c, but that's no longer the case.

As such, there's no longer a need to export the function.  Make it
private inside l2tp_core.c, and relocate it to avoid having to declare
the function prototype in l2tp_core.h.

Since the function is no longer used outside l2tp_core.c, remove the
"__" prefix since we don't need to indicate anything special about its
expected use to callers.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Parkin 2020-07-28 18:20:28 +01:00 committed by David S. Miller
parent d323942535
commit b2aecfe8e4
2 changed files with 26 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
net/l2tp/l2tp_core.c
View File

@ -1180,6 +1180,30 @@ static void l2tp_tunnel_destruct(struct sock *sk)
return;
}
/* Remove an l2tp session from l2tp_core's hash lists. */
static void l2tp_session_unhash(struct l2tp_session *session)
{
struct l2tp_tunnel *tunnel = session->tunnel;
/* Remove the session from core hashes */
if (tunnel) {
/* Remove from the per-tunnel hash */
write_lock_bh(&tunnel->hlist_lock);
hlist_del_init(&session->hlist);
write_unlock_bh(&tunnel->hlist_lock);
/* For L2TPv3 we have a per-net hash: remove from there, too */
if (tunnel->version != L2TP_HDR_VER_2) {
struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net);
spin_lock_bh(&pn->l2tp_session_hlist_lock);
hlist_del_init_rcu(&session->global_hlist);
spin_unlock_bh(&pn->l2tp_session_hlist_lock);
synchronize_rcu();
}
}
}
/* When the tunnel is closed, all the attached sessions need to go too.
*/
static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
@ -1209,7 +1233,7 @@ static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
write_unlock_bh(&tunnel->hlist_lock);
__l2tp_session_unhash(session);
l2tp_session_unhash(session);
l2tp_session_queue_purge(session);
if (session->session_close)
@ -1574,35 +1598,6 @@ void l2tp_session_free(struct l2tp_session *session)
}
EXPORT_SYMBOL_GPL(l2tp_session_free);
/* Remove an l2tp session from l2tp_core's hash lists.
* Provides a tidyup interface for pseudowire code which can't just route all
* shutdown via. l2tp_session_delete and a pseudowire-specific session_close
* callback.
*/
void __l2tp_session_unhash(struct l2tp_session *session)
{
struct l2tp_tunnel *tunnel = session->tunnel;
/* Remove the session from core hashes */
if (tunnel) {
/* Remove from the per-tunnel hash */
write_lock_bh(&tunnel->hlist_lock);
hlist_del_init(&session->hlist);
write_unlock_bh(&tunnel->hlist_lock);
/* For L2TPv3 we have a per-net hash: remove from there, too */
if (tunnel->version != L2TP_HDR_VER_2) {
struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net);
spin_lock_bh(&pn->l2tp_session_hlist_lock);
hlist_del_init_rcu(&session->global_hlist);
spin_unlock_bh(&pn->l2tp_session_hlist_lock);
synchronize_rcu();
}
}
}
EXPORT_SYMBOL_GPL(__l2tp_session_unhash);
/* This function is used by the netlink SESSION_DELETE command and by
* pseudowire modules.
*/
@ -1611,7 +1606,7 @@ int l2tp_session_delete(struct l2tp_session *session)
if (test_and_set_bit(0, &session->dead))
return 0;
__l2tp_session_unhash(session);
l2tp_session_unhash(session);
l2tp_session_queue_purge(session);
if (session->session_close)
(*session->session_close)(session);

1
net/l2tp/l2tp_core.h
View File

@ -201,7 +201,6 @@ struct l2tp_session *l2tp_session_create(int priv_size,
int l2tp_session_register(struct l2tp_session *session,
struct l2tp_tunnel *tunnel);
void __l2tp_session_unhash(struct l2tp_session *session);
int l2tp_session_delete(struct l2tp_session *session);
void l2tp_session_free(struct l2tp_session *session);
void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,