@@ -118,6 +118,38 @@ int cn_netlink_send(struct cn_msg *msg, u32 __group, gfp_t gfp_mask)
EXPORT_SYMBOL_GPL(cn_netlink_send);
/*
+ * Send an unicast reply from a connector callback
+ *
+ */
+int cn_netlink_reply(struct cn_msg *msg, u32 pid, gfp_t gfp_mask)
+{
+ unsigned int size;
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ struct cn_msg *data;
+ struct cn_dev *dev = &cdev;
+
+ size = NLMSG_SPACE(sizeof(*msg) + msg->len);
+
+ skb = alloc_skb(size, gfp_mask);
+ if (!skb)
+ return -ENOMEM;
+
+ nlh = nlmsg_put(skb, 0, msg->seq, NLMSG_DONE, size - sizeof(*nlh), 0);
+ if (nlh == NULL) {
+ kfree_skb(skb);
+ return -EMSGSIZE;
+ }
+
+ data = nlmsg_data(nlh);
+
+ memcpy(data, msg, sizeof(*data) + msg->len);
+
+ return netlink_unicast(dev->nls, skb, pid, 1);
+}
+EXPORT_SYMBOL_GPL(cn_netlink_reply);
+
+/*
* Callback helper - queues work and setup destructor for given data.
*/
static int cn_call_callback(struct sk_buff *skb)
@@ -125,6 +125,7 @@ int cn_add_callback(struct cb_id *id, const char *name,
void (*callback)(struct cn_msg *, struct netlink_skb_parms *));
void cn_del_callback(struct cb_id *);
int cn_netlink_send(struct cn_msg *, u32, gfp_t);
+int cn_netlink_reply(struct cn_msg *, u32, gfp_t);
int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name,
struct cb_id *id,