tools: Rename IPC functions to reduce misleading

[liuqun]

The function name like ipc_get_device() is a little bit misleading.
To make the code more readable for new developers, here are some suggestions:

• Rename ipc_get_device(&dev) to ipc_fetch_conf(&conf) because it only fetches the runtime configuations from kernel.
• Funtion prototype ipc_set_device(struct wgdevice *dev) is changed to ipc_set_device(const struct wgdevice *newconf).

Change the following IPC function names and parameters which used to be confusing:

• ipc_set_device(dev) => ipc_set_device(newconf)
• ipc_get_device(dev, interface) => ipc_fetch_conf(conf, interface)
• kernel_set_device(dev) => kernel_set_device(newconf)
• kernel_get_device(device, interface) => kernel_fetch_conf(conf, interface)
• userspace_set_device(dev) => userspace_set_device(newconf)
• userspace_get_device(out, interface) => userspace_fetch_conf(out, interface)

Renamed local variable/parameter symbols:

• In showconf_main(), show_main():
  device => conf
• In ipc_fetch_conf(), kernel_fetch_conf(), userspace_fetch_conf():
  dev => conf
• In ipc_set_device(), kernel_set_device(), userspace_set_device():
  dev => newconf

Added function:

• free_conf(struct wgdevice *conf)

Changed function prototypes:

• int ipc_set_device(struct wgdevice *)
  => int ipc_set_device(const struct wgdevice *newconf)
• int kernel_set_device(struct wgdevice *)
  => int kernel_set_device(const struct wgdevice *newconf)
• int userspace_set_device(struct wgdevice *)
  => int userspace_set_device(const struct wgdevice *newconf)

Note: This patch comes with no extra curly braces introduced.

-- Liu Qun

[liuqun]

@thinrope

In the Linux kernel source tree, there is one code formater script called Lindent.
But I am not quite sure how it works. I can see it calls indent interally with many code formating sytle options. Hope that I could figure out how to use it some day.

One blog: Lindent – amazing script for lazy C coder

Another discussion on Lindent suggest us to use indent --linux-style instead of the script Lindent:

... recent versions of indent (as of November 2007) have a "--linux-style" option which serves the same purpose as Lindent. The result is almost the same in my case, but --linux-style translates to a much longer list of options. Also some options seem better than what Lindent uses (e.g. -il1 instead of -il0.)

In the light of this I would tend to agree with Joe that Lindent could go away and references to it be replaced with "indent --linux-style".
-- said Jean Delvare at https://lore.kernel.org/patchwork/patch/577917/

By the way, perhaps I should just follow other kernel developers' current coding style. As an old phrase says "When in Rome, do as Romans do"...