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l2tp: remove ->ref() and ->deref()

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The ->ref() and ->deref() callbacks are unused since PPP stopped using
them in ee40fb2e1e ("l2tp: protect sock pointer of struct pppol2tp_session with RCU").

We can thus remove them from struct l2tp_session and drop the do_ref
parameter of l2tp_session_get*().

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
2017-10-31 17:36:42 +01:00
committed by David S. Miller
parent aa2bc739ef
commit a4346210c4
7 changed files with 25 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
net/l2tp/l2tp_netlink.c
View File

@@ -48,8 +48,7 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq,
/* Accessed under genl lock */
static const struct l2tp_nl_cmd_ops *l2tp_nl_cmd_ops[__L2TP_PWTYPE_MAX];
static struct l2tp_session *l2tp_nl_session_get(struct genl_info *info,
bool do_ref)
static struct l2tp_session *l2tp_nl_session_get(struct genl_info *info)
{
u32 tunnel_id;
u32 session_id;
@@ -60,15 +59,14 @@ static struct l2tp_session *l2tp_nl_session_get(struct genl_info *info,
if (info->attrs[L2TP_ATTR_IFNAME]) {
ifname = nla_data(info->attrs[L2TP_ATTR_IFNAME]);
session = l2tp_session_get_by_ifname(net, ifname, do_ref);
session = l2tp_session_get_by_ifname(net, ifname);
} else if ((info->attrs[L2TP_ATTR_SESSION_ID]) &&
(info->attrs[L2TP_ATTR_CONN_ID])) {
tunnel_id = nla_get_u32(info->attrs[L2TP_ATTR_CONN_ID]);
session_id = nla_get_u32(info->attrs[L2TP_ATTR_SESSION_ID]);
tunnel = l2tp_tunnel_get(net, tunnel_id);
if (tunnel) {
session = l2tp_session_get(net, tunnel, session_id,
do_ref);
session = l2tp_session_get(net, tunnel, session_id);
l2tp_tunnel_dec_refcount(tunnel);
}
}
@@ -649,7 +647,7 @@ static int l2tp_nl_cmd_session_create(struct sk_buff *skb, struct genl_info *inf
&cfg);
if (ret >= 0) {
session = l2tp_session_get(net, tunnel, session_id, false);
session = l2tp_session_get(net, tunnel, session_id);
if (session) {
ret = l2tp_session_notify(&l2tp_nl_family, info, session,
L2TP_CMD_SESSION_CREATE);
@@ -669,7 +667,7 @@ static int l2tp_nl_cmd_session_delete(struct sk_buff *skb, struct genl_info *inf
struct l2tp_session *session;
u16 pw_type;
session = l2tp_nl_session_get(info, true);
session = l2tp_nl_session_get(info);
if (session == NULL) {
ret = -ENODEV;
goto out;
@@ -683,8 +681,6 @@ static int l2tp_nl_cmd_session_delete(struct sk_buff *skb, struct genl_info *inf
if (l2tp_nl_cmd_ops[pw_type] && l2tp_nl_cmd_ops[pw_type]->session_delete)
ret = (*l2tp_nl_cmd_ops[pw_type]->session_delete)(session);
if (session->deref)
session->deref(session);
l2tp_session_dec_refcount(session);
out:
@@ -696,7 +692,7 @@ static int l2tp_nl_cmd_session_modify(struct sk_buff *skb, struct genl_info *inf
int ret = 0;
struct l2tp_session *session;
session = l2tp_nl_session_get(info, false);
session = l2tp_nl_session_get(info);
if (session == NULL) {
ret = -ENODEV;
goto out;
@@ -828,7 +824,7 @@ static int l2tp_nl_cmd_session_get(struct sk_buff *skb, struct genl_info *info)
struct sk_buff *msg;
int ret;
session = l2tp_nl_session_get(info, false);
session = l2tp_nl_session_get(info);
if (session == NULL) {
ret = -ENODEV;
goto err;
@@ -874,7 +870,7 @@ static int l2tp_nl_cmd_session_dump(struct sk_buff *skb, struct netlink_callback
goto out;
}
session = l2tp_session_get_nth(tunnel, si, false);
session = l2tp_session_get_nth(tunnel, si);
if (session == NULL) {
ti++;
tunnel = NULL;