netdev - Re: [PATCH iproute2 v3 1/2] tc: u32: add support for json output

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Date:   Thu, 6 Jan 2022 14:30:13 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Wen Liang <liangwen12year@...il.com>
Cc:     netdev@...r.kernel.org, dsahern@...il.com, aclaudi@...hat.com
Subject: Re: [PATCH iproute2 v3 1/2] tc: u32: add support for json output

On Thu,  6 Jan 2022 13:45:51 -0500
Wen Liang <liangwen12year@...il.com> wrote:

>  	} else if (sel && sel->flags & TC_U32_TERMINAL) {
> -		fprintf(f, "terminal flowid ??? ");
> +		print_bool(PRINT_ANY, "terminal_flowid", "terminal flowid ??? ", true);

This looks like another error (ie to stderr) like the earlier case

>  	if (tb[TCA_U32_LINK]) {
>  		SPRINT_BUF(b1);
> -		fprintf(f, "link %s ",
> -			sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]),
> +		print_string(PRINT_ANY, "link", "link %s ", sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]),
>  					  b1));

Break that long line up. Would look better with a temporary variable.

FYI - good test is to run the json output into python's json parser to make sure it is valid.