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| author | Sjur Braendeland <sjur.brandeland@stericsson.com> | 2010-04-28 08:54:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-28 12:55:12 -0700 |
| commit | 5b2086567503f9b55136642031ec0067319f58e0 (patch) | |
| tree | 00c4264ed7a8a989b398166c2c5f98175f5c28a5 /include/net/caif | |
| parent | e539d83cc8a4fa581cbf8ed288fdadb19a692cb0 (diff) | |
| download | linux-5b2086567503f9b55136642031ec0067319f58e0.tar.gz linux-5b2086567503f9b55136642031ec0067319f58e0.tar.bz2 linux-5b2086567503f9b55136642031ec0067319f58e0.zip | |
caif: Add reference counting to service layer
Changes:
o Added functions cfsrvl_get and cfsrvl_put.
o Added support release_client to use by socket and net device.
o Increase reference counting for in-flight packets from cfmuxl
Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/caif')
| -rw-r--r-- | include/net/caif/caif_dev.h | 11 | ||||
| -rw-r--r-- | include/net/caif/cfcnfg.h | 7 | ||||
| -rw-r--r-- | include/net/caif/cfsrvl.h | 22 |
3 files changed, 40 insertions, 0 deletions
diff --git a/include/net/caif/caif_dev.h b/include/net/caif/caif_dev.h index 3aa1ff642323..318ab9478a44 100644 --- a/include/net/caif/caif_dev.h +++ b/include/net/caif/caif_dev.h @@ -70,6 +70,17 @@ int caif_connect_client(struct caif_connect_request *config, int caif_disconnect_client(struct cflayer *client_layer); /** + * caif_release_client - Release adaptation layer reference to client. + * + * @client_layer: Client layer. + * + * Releases a client/adaptation layer use of the caif stack. + * This function must be used after caif_disconnect_client to + * decrease the reference count of the service layer. + */ +void caif_release_client(struct cflayer *client_layer); + +/** * connect_req_to_link_param - Translate configuration parameters * from socket format to internal format. * @cnfg: Pointer to configuration handler diff --git a/include/net/caif/cfcnfg.h b/include/net/caif/cfcnfg.h index f16b875acc48..9fc2fc20b884 100644 --- a/include/net/caif/cfcnfg.h +++ b/include/net/caif/cfcnfg.h @@ -97,6 +97,13 @@ int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg, struct cflayer *adap_layer); /** + * cfcnfg_release_adap_layer - Used by client to release the adaptation layer. + * + * @adap_layer: Adaptation layer. + */ +void cfcnfg_release_adap_layer(struct cflayer *adap_layer); + +/** * cfcnfg_add_adaptation_layer - Add an adaptation layer to the CAIF stack. * * The adaptation Layer is where the interface to application or higher-level diff --git a/include/net/caif/cfsrvl.h b/include/net/caif/cfsrvl.h index b2a12db20cd2..2dc9eb193ecf 100644 --- a/include/net/caif/cfsrvl.h +++ b/include/net/caif/cfsrvl.h @@ -9,14 +9,18 @@ #include <linux/list.h> #include <linux/stddef.h> #include <linux/types.h> +#include <linux/kref.h> + struct cfsrvl { struct cflayer layer; bool open; bool phy_flow_on; bool modem_flow_on; struct dev_info dev_info; + struct kref ref; }; +void cfsrvl_release(struct kref *kref); struct cflayer *cfvei_create(u8 linkid, struct dev_info *dev_info); struct cflayer *cfdgml_create(u8 linkid, struct dev_info *dev_info); struct cflayer *cfutill_create(u8 linkid, struct dev_info *dev_info); @@ -31,4 +35,22 @@ void cfsrvl_init(struct cfsrvl *service, bool cfsrvl_ready(struct cfsrvl *service, int *err); u8 cfsrvl_getphyid(struct cflayer *layer); +static inline void cfsrvl_get(struct cflayer *layr) +{ + struct cfsrvl *s; + if (layr == NULL) + return; + s = container_of(layr, struct cfsrvl, layer); + kref_get(&s->ref); +} + +static inline void cfsrvl_put(struct cflayer *layr) +{ + struct cfsrvl *s; + if (layr == NULL) + return; + s = container_of(layr, struct cfsrvl, layer); + kref_put(&s->ref, cfsrvl_release); +} + #endif /* CFSRVL_H_ */ |