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l2tp: make local function static

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Also moved the refcound inlines from l2tp_core.h to l2tp_core.c
since only used in that one file.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2010-10-21 07:50:46 +00:00 committed by David S. Miller
parent 9740d78604
commit fc130840d7
3 changed files with 41 additions and 44 deletions
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50
net/l2tp/l2tp_core.c
View File

@ -111,6 +111,10 @@ 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 void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
static inline struct l2tp_net *l2tp_pernet(struct net *net)
{
BUG_ON(!net);
@ -118,6 +122,34 @@ static inline struct l2tp_net *l2tp_pernet(struct net *net)
return net_generic(net, l2tp_net_id);
}
/* Tunnel reference counts. Incremented per session that is added to
* the tunnel.
*/
static inline void l2tp_tunnel_inc_refcount_1(struct l2tp_tunnel *tunnel)
{
atomic_inc(&tunnel->ref_count);
}
static inline void l2tp_tunnel_dec_refcount_1(struct l2tp_tunnel *tunnel)
{
if (atomic_dec_and_test(&tunnel->ref_count))
l2tp_tunnel_free(tunnel);
}
#ifdef L2TP_REFCNT_DEBUG
#define l2tp_tunnel_inc_refcount(_t) do { \
printk(KERN_DEBUG "l2tp_tunnel_inc_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \
l2tp_tunnel_inc_refcount_1(_t); \
} while (0)
#define l2tp_tunnel_dec_refcount(_t) do { \
printk(KERN_DEBUG "l2tp_tunnel_dec_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \
l2tp_tunnel_dec_refcount_1(_t); \
} while (0)
#else
#define l2tp_tunnel_inc_refcount(t) l2tp_tunnel_inc_refcount_1(t)
#define l2tp_tunnel_dec_refcount(t) l2tp_tunnel_dec_refcount_1(t)
#endif
/* Session hash global list for L2TPv3.
* The session_id SHOULD be random according to RFC3931, but several
* L2TP implementations use incrementing session_ids. So we do a real
@ -699,8 +731,8 @@ EXPORT_SYMBOL(l2tp_recv_common);
* Returns 1 if the packet was not a good data packet and could not be
* forwarded. All such packets are passed up to userspace to deal with.
*/
int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
int (*payload_hook)(struct sk_buff *skb))
static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
int (*payload_hook)(struct sk_buff *skb))
{
struct l2tp_session *session = NULL;
unsigned char *ptr, *optr;
@ -922,7 +954,8 @@ static int l2tp_build_l2tpv3_header(struct l2tp_session *session, void *buf)
return bufp - optr;
}
int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, size_t data_len)
static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
size_t data_len)
{
struct l2tp_tunnel *tunnel = session->tunnel;
unsigned int len = skb->len;
@ -1089,7 +1122,7 @@ EXPORT_SYMBOL_GPL(l2tp_xmit_skb);
* The tunnel context is deleted only when all session sockets have been
* closed.
*/
void l2tp_tunnel_destruct(struct sock *sk)
static void l2tp_tunnel_destruct(struct sock *sk)
{
struct l2tp_tunnel *tunnel;
@ -1128,11 +1161,10 @@ void l2tp_tunnel_destruct(struct sock *sk)
end:
return;
}
EXPORT_SYMBOL(l2tp_tunnel_destruct);
/* When the tunnel is closed, all the attached sessions need to go too.
*/
void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
{
int hash;
struct hlist_node *walk;
@ -1198,7 +1230,7 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall);
/* Really kill the tunnel.
* Come here only when all sessions have been cleared from the tunnel.
*/
void l2tp_tunnel_free(struct l2tp_tunnel *tunnel)
static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel)
{
struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net);
@ -1217,7 +1249,6 @@ void l2tp_tunnel_free(struct l2tp_tunnel *tunnel)
atomic_dec(&l2tp_tunnel_count);
kfree(tunnel);
}
EXPORT_SYMBOL_GPL(l2tp_tunnel_free);
/* Create a socket for the tunnel, if one isn't set up by
* userspace. This is used for static tunnels where there is no
@ -1512,7 +1543,7 @@ EXPORT_SYMBOL_GPL(l2tp_session_delete);
/* We come here whenever a session's send_seq, cookie_len or
* l2specific_len parameters are set.
*/
void l2tp_session_set_header_len(struct l2tp_session *session, int version)
static void l2tp_session_set_header_len(struct l2tp_session *session, int version)
{
if (version == L2TP_HDR_VER_2) {
session->hdr_len = 6;
@ -1525,7 +1556,6 @@ void l2tp_session_set_header_len(struct l2tp_session *session, int version)
}
}
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)
{

33
net/l2tp/l2tp_core.h
View File

@ -231,48 +231,15 @@ extern int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_i
extern int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
extern 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);
extern int l2tp_session_delete(struct l2tp_session *session);
extern void l2tp_tunnel_free(struct l2tp_tunnel *tunnel);
extern void l2tp_session_free(struct l2tp_session *session);
extern void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, unsigned char *ptr, unsigned char *optr, u16 hdrflags, int length, int (*payload_hook)(struct sk_buff *skb));
extern int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, int (*payload_hook)(struct sk_buff *skb));
extern int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb);
extern int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, size_t data_len);
extern int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len);
extern void l2tp_tunnel_destruct(struct sock *sk);
extern void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
extern void l2tp_session_set_header_len(struct l2tp_session *session, int version);
extern int l2tp_nl_register_ops(enum l2tp_pwtype pw_type, const struct l2tp_nl_cmd_ops *ops);
extern void l2tp_nl_unregister_ops(enum l2tp_pwtype pw_type);
/* Tunnel reference counts. Incremented per session that is added to
* the tunnel.
*/
static inline void l2tp_tunnel_inc_refcount_1(struct l2tp_tunnel *tunnel)
{
atomic_inc(&tunnel->ref_count);
}
static inline void l2tp_tunnel_dec_refcount_1(struct l2tp_tunnel *tunnel)
{
if (atomic_dec_and_test(&tunnel->ref_count))
l2tp_tunnel_free(tunnel);
}
#ifdef L2TP_REFCNT_DEBUG
#define l2tp_tunnel_inc_refcount(_t) do { \
printk(KERN_DEBUG "l2tp_tunnel_inc_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \
l2tp_tunnel_inc_refcount_1(_t); \
} while (0)
#define l2tp_tunnel_dec_refcount(_t) do { \
printk(KERN_DEBUG "l2tp_tunnel_dec_refcount: %s:%d %s: cnt=%d\n", __func__, __LINE__, (_t)->name, atomic_read(&_t->ref_count)); \
l2tp_tunnel_dec_refcount_1(_t); \
} while (0)
#else
#define l2tp_tunnel_inc_refcount(t) l2tp_tunnel_inc_refcount_1(t)
#define l2tp_tunnel_dec_refcount(t) l2tp_tunnel_dec_refcount_1(t)
#endif
/* Session reference counts. Incremented when code obtains a reference
* to a session.
*/

2
net/l2tp/l2tp_ip.c
View File

@ -576,7 +576,7 @@ out:
return copied;
}
struct proto l2tp_ip_prot = {
static struct proto l2tp_ip_prot = {
.name = "L2TP/IP",
.owner = THIS_MODULE,
.init = l2tp_ip_open,