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authorSjur Braendeland <sjur.brandeland@stericsson.com>2010-04-28 08:54:36 +0000
committerDavid S. Miller <davem@davemloft.net>2010-04-28 12:55:12 -0700
commit5b2086567503f9b55136642031ec0067319f58e0 (patch)
tree00c4264ed7a8a989b398166c2c5f98175f5c28a5 /net/caif
parente539d83cc8a4fa581cbf8ed288fdadb19a692cb0 (diff)
downloadvexpress-lsk-5b2086567503f9b55136642031ec0067319f58e0.tar.gz
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 'net/caif')
-rw-r--r--net/caif/caif_dev.c6
-rw-r--r--net/caif/cfcnfg.c7
-rw-r--r--net/caif/cfmuxl.c7
-rw-r--r--net/caif/cfsrvl.c7
4 files changed, 26 insertions, 1 deletions
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index be1f674a3b6..0145bae0274 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -346,6 +346,12 @@ int caif_disconnect_client(struct cflayer *adap_layer)
}
EXPORT_SYMBOL(caif_disconnect_client);
+void caif_release_client(struct cflayer *adap_layer)
+{
+ cfcnfg_release_adap_layer(adap_layer);
+}
+EXPORT_SYMBOL(caif_release_client);
+
/* Per-namespace Caif devices handling */
static int caif_init_net(struct net *net)
{
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index d52f2566916..f94f3dfe85c 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -247,6 +247,13 @@ end:
}
EXPORT_SYMBOL(cfcnfg_disconn_adapt_layer);
+void cfcnfg_release_adap_layer(struct cflayer *adap_layer)
+{
+ if (adap_layer->dn)
+ cfsrvl_put(adap_layer->dn);
+}
+EXPORT_SYMBOL(cfcnfg_release_adap_layer);
+
static void cfcnfg_linkdestroy_rsp(struct cflayer *layer, u8 channel_id,
struct cflayer *client_layer)
{
diff --git a/net/caif/cfmuxl.c b/net/caif/cfmuxl.c
index 6fb9f9e96cf..7372f27f1d3 100644
--- a/net/caif/cfmuxl.c
+++ b/net/caif/cfmuxl.c
@@ -62,6 +62,7 @@ int cfmuxl_set_uplayer(struct cflayer *layr, struct cflayer *up, u8 linkid)
{
struct cfmuxl *muxl = container_obj(layr);
spin_lock(&muxl->receive_lock);
+ cfsrvl_get(up);
list_add(&up->node, &muxl->srvl_list);
spin_unlock(&muxl->receive_lock);
return 0;
@@ -172,8 +173,11 @@ struct cflayer *cfmuxl_remove_uplayer(struct cflayer *layr, u8 id)
struct cfmuxl *muxl = container_obj(layr);
spin_lock(&muxl->receive_lock);
up = get_up(muxl, id);
+ if (up == NULL)
+ return NULL;
memset(muxl->up_cache, 0, sizeof(muxl->up_cache));
list_del(&up->node);
+ cfsrvl_put(up);
spin_unlock(&muxl->receive_lock);
return up;
}
@@ -203,8 +207,9 @@ static int cfmuxl_receive(struct cflayer *layr, struct cfpkt *pkt)
*/
return /* CFGLU_EPROT; */ 0;
}
-
+ cfsrvl_get(up);
ret = up->receive(up, pkt);
+ cfsrvl_put(up);
return ret;
}
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index d470c51c643..aff31f34528 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -158,6 +158,13 @@ void cfsrvl_init(struct cfsrvl *service,
service->layer.ctrlcmd = cfservl_ctrlcmd;
service->layer.modemcmd = cfservl_modemcmd;
service->dev_info = *dev_info;
+ kref_init(&service->ref);
+}
+
+void cfsrvl_release(struct kref *kref)
+{
+ struct cfsrvl *service = container_of(kref, struct cfsrvl, ref);
+ kfree(service);
}
bool cfsrvl_ready(struct cfsrvl *service, int *err)