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Diffstat (limited to 'net/phonet/af_phonet.c')
-rw-r--r--net/phonet/af_phonet.c52
1 files changed, 24 insertions, 28 deletions
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 7ab30f668b5..9d211f12582 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -33,9 +33,30 @@
33#include <net/phonet/phonet.h> 33#include <net/phonet/phonet.h>
34#include <net/phonet/pn_dev.h> 34#include <net/phonet/pn_dev.h>
35 35
36static struct net_proto_family phonet_proto_family; 36/* Transport protocol registration */
37static struct phonet_protocol *phonet_proto_get(int protocol); 37static struct phonet_protocol *proto_tab[PHONET_NPROTO] __read_mostly;
38static inline void phonet_proto_put(struct phonet_protocol *pp); 38static DEFINE_SPINLOCK(proto_tab_lock);
39
40static struct phonet_protocol *phonet_proto_get(int protocol)
41{
42 struct phonet_protocol *pp;
43
44 if (protocol >= PHONET_NPROTO)
45 return NULL;
46
47 spin_lock(&proto_tab_lock);
48 pp = proto_tab[protocol];
49 if (pp && !try_module_get(pp->prot->owner))
50 pp = NULL;
51 spin_unlock(&proto_tab_lock);
52
53 return pp;
54}
55
56static inline void phonet_proto_put(struct phonet_protocol *pp)
57{
58 module_put(pp->prot->owner);
59}
39 60
40/* protocol family functions */ 61/* protocol family functions */
41 62
@@ -375,10 +396,6 @@ static struct packet_type phonet_packet_type = {
375 .func = phonet_rcv, 396 .func = phonet_rcv,
376}; 397};
377 398
378/* Transport protocol registration */
379static struct phonet_protocol *proto_tab[PHONET_NPROTO] __read_mostly;
380static DEFINE_SPINLOCK(proto_tab_lock);
381
382int __init_or_module phonet_proto_register(int protocol, 399int __init_or_module phonet_proto_register(int protocol,
383 struct phonet_protocol *pp) 400 struct phonet_protocol *pp)
384{ 401{
@@ -412,27 +429,6 @@ void phonet_proto_unregister(int protocol, struct phonet_protocol *pp)
412} 429}
413EXPORT_SYMBOL(phonet_proto_unregister); 430EXPORT_SYMBOL(phonet_proto_unregister);
414 431
415static struct phonet_protocol *phonet_proto_get(int protocol)
416{
417 struct phonet_protocol *pp;
418
419 if (protocol >= PHONET_NPROTO)
420 return NULL;
421
422 spin_lock(&proto_tab_lock);
423 pp = proto_tab[protocol];
424 if (pp && !try_module_get(pp->prot->owner))
425 pp = NULL;
426 spin_unlock(&proto_tab_lock);
427
428 return pp;
429}
430
431static inline void phonet_proto_put(struct phonet_protocol *pp)
432{
433 module_put(pp->prot->owner);
434}
435
436/* Module registration */ 432/* Module registration */
437static int __init phonet_init(void) 433static int __init phonet_init(void)
438{ 434{