VPP/CodeStyleConventions

Introduction

• Link to mailer describing it.

DO I NEED TO APPLY STYLE ?

• If you don't see this at the end of your [.ch] file:

/*

* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/

you need to apply style.

EMACS

• There is an emacs skel for a set of emacs scripts that will auto-format

Essentially the idea is that the skeleton will put some comments in that EMACS script understands, apply a predefined format style, that more importantly than "GNU" or "Linux" or where "{" goes, DOESN'T MUCK UP MACROS!

Pre-processor macros are a key part of VPP and need special format attention.

C-code style for VPP is "gnu"

• Load the emacs skel by either opening and "M-x eval-buffer" or "M-x load-file" ..

.../build-root/emacs-lisp/fix-coding-style.el

• Now you should have a meta-function "M-x fd-io-styleify"

• Run this against an active buffer containing the VPP code you wish to apply the style to.

• Save file and, assuming you have installed "indent" from apt/rpm, from a bash prompt:

indent <files>

• Fix any warnings or errors

• Here is an example of vnet/vnet/sr/sr.c.

After running the "fd-io-styleify", saving and "git diff"