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l2tp: define parameters of l2tp_session_get*() as "const"

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Make l2tp_pernet()'s parameter constant, so that l2tp_session_get*() can
declare their "net" variable as "const".
Also constify "ifname" in l2tp_session_get_by_ifname().

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 2017-04-12 10:05:29 +02:00 committed by David S. Miller
parent 2a446c5190
commit 9aaef50c44
2 changed files with 7 additions and 5 deletions
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7
net/l2tp/l2tp_core.c
View File

@ -120,7 +120,7 @@ static inline struct l2tp_tunnel *l2tp_tunnel(struct sock *sk)
return sk->sk_user_data; return sk->sk_user_data;
} }
static inline struct l2tp_net *l2tp_pernet(struct net *net) static inline struct l2tp_net *l2tp_pernet(const struct net *net)
{ {
BUG_ON(!net); BUG_ON(!net);
@ -232,7 +232,7 @@ l2tp_session_id_hash(struct l2tp_tunnel *tunnel, u32 session_id)
/* Lookup a session. A new reference is held on the returned session. /* Lookup a session. A new reference is held on the returned session.
* Optionally calls session->ref() too if do_ref is true. * Optionally calls session->ref() too if do_ref is true.
*/ */
struct l2tp_session *l2tp_session_get(struct net *net, struct l2tp_session *l2tp_session_get(const struct net *net,
struct l2tp_tunnel *tunnel, struct l2tp_tunnel *tunnel,
u32 session_id, bool do_ref) u32 session_id, bool do_ref)
{ {
@ -307,7 +307,8 @@ EXPORT_SYMBOL_GPL(l2tp_session_get_nth);
/* Lookup a session by interface name. /* Lookup a session by interface name.
* This is very inefficient but is only used by management interfaces. * This is very inefficient but is only used by management interfaces.
*/ */
struct l2tp_session *l2tp_session_get_by_ifname(struct net *net, char *ifname, struct l2tp_session *l2tp_session_get_by_ifname(const struct net *net,
const char *ifname,
bool do_ref) bool do_ref)
{ {
struct l2tp_net *pn = l2tp_pernet(net); struct l2tp_net *pn = l2tp_pernet(net);

5
net/l2tp/l2tp_core.h
View File

@ -230,12 +230,13 @@ out:
return tunnel; return tunnel;
} }
struct l2tp_session *l2tp_session_get(struct net *net, struct l2tp_session *l2tp_session_get(const struct net *net,
struct l2tp_tunnel *tunnel, struct l2tp_tunnel *tunnel,
u32 session_id, bool do_ref); u32 session_id, bool do_ref);
struct l2tp_session *l2tp_session_get_nth(struct l2tp_tunnel *tunnel, int nth, struct l2tp_session *l2tp_session_get_nth(struct l2tp_tunnel *tunnel, int nth,
bool do_ref); bool do_ref);
struct l2tp_session *l2tp_session_get_by_ifname(struct net *net, char *ifname, struct l2tp_session *l2tp_session_get_by_ifname(const struct net *net,
const char *ifname,
bool do_ref); bool do_ref);
struct l2tp_tunnel *l2tp_tunnel_find(struct net *net, u32 tunnel_id); struct l2tp_tunnel *l2tp_tunnel_find(struct net *net, u32 tunnel_id);
struct l2tp_tunnel *l2tp_tunnel_find_nth(struct net *net, int nth); struct l2tp_tunnel *l2tp_tunnel_find_nth(struct net *net, int nth);