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path: root/drivers/connector/connector.c
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Diffstat (limited to 'drivers/connector/connector.c')
-rw-r--r--drivers/connector/connector.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index b14f1d36f897..f612d68629dc 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -43,6 +43,8 @@ static struct cn_dev cdev;
static int cn_already_initialized;
/*
+ * Sends mult (multiple) cn_msg at a time.
+ *
* msg->seq and msg->ack are used to determine message genealogy.
* When someone sends message it puts there locally unique sequence
* and random acknowledge numbers. Sequence number may be copied into
@@ -62,10 +64,13 @@ static int cn_already_initialized;
* the acknowledgement number in the original message + 1, then it is
* a new message.
*
+ * If msg->len != len, then additional cn_msg messages are expected following
+ * the first msg.
+ *
* The message is sent to, the portid if given, the group if given, both if
* both, or if both are zero then the group is looked up and sent there.
*/
-int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 __group,
+int cn_netlink_send_mult(struct cn_msg *msg, u16 len, u32 portid, u32 __group,
gfp_t gfp_mask)
{
struct cn_callback_entry *__cbq;
@@ -98,7 +103,7 @@ int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 __group,
if (!portid && !netlink_has_listeners(dev->nls, group))
return -ESRCH;
- size = sizeof(*msg) + msg->len;
+ size = sizeof(*msg) + len;
skb = nlmsg_new(size, gfp_mask);
if (!skb)
@@ -121,6 +126,14 @@ int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 __group,
gfp_mask);
return netlink_unicast(dev->nls, skb, portid, !(gfp_mask&__GFP_WAIT));
}
+EXPORT_SYMBOL_GPL(cn_netlink_send_mult);
+
+/* same as cn_netlink_send_mult except msg->len is used for len */
+int cn_netlink_send(struct cn_msg *msg, u32 portid, u32 __group,
+ gfp_t gfp_mask)
+{
+ return cn_netlink_send_mult(msg, msg->len, portid, __group, gfp_mask);
+}
EXPORT_SYMBOL_GPL(cn_netlink_send);
/*