static int handle_userspace_msg(struct sk_buff *skb, struct genl_info *info)
{
int error;
mutex_lock(&config_mutex);
error_pool_activate();
switch (info->genlhdr->cmd) {
case COMMAND_EXPECT_ADD:
error = handle_expect_add(info);
break;
case COMMAND_EXPECT_FLUSH:
error = handle_expect_flush(info);
break;
case COMMAND_SEND:
error = handle_send(info);
break;
case COMMAND_STATS_DISPLAY:
error = handle_stats_display(info);
break;
case COMMAND_STATS_FLUSH:
error = handle_stats_flush(info);
break;
default:
log_err("Unknown command code: %d", info->genlhdr->cmd);
error_pool_deactivate();
return genl_respond(info, -EINVAL);
}
error_pool_deactivate();
mutex_unlock(&config_mutex);
return error;
}
/**
* Gets called by Netlink when the userspace application wants to interact with us.
*
* @param skb packet received from userspace.
*/
static void receive_from_userspace(struct sk_buff *skb)
{
mutex_lock(&config_mutex);
error_pool_activate();
netlink_rcv_skb(skb, &handle_netlink_message);
error_pool_deactivate();
mutex_unlock(&config_mutex);
}
int handle_jool_message(struct sk_buff *skb, struct genl_info *info)
{
int error;
mutex_lock(&config_mutex);
error_pool_activate();
error = __handle_jool_message(info);
error_pool_deactivate();
mutex_unlock(&config_mutex);
return error;
}