netdev - Re: [PATCH iproute2 1/5] tc_util: introduce a function to print JSON/non-JSON masked numbers

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Date:   Wed, 13 Nov 2019 09:18:25 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Roi Dayan <roid@...lanox.com>
Cc:     netdev@...r.kernel.org, David Ahern <dsahern@...il.com>,
        Jiri Pirko <jiri@...lanox.com>,
        Eli Britstein <elibr@...lanox.com>
Subject: Re: [PATCH iproute2 1/5] tc_util: introduce a function to print
 JSON/non-JSON masked numbers

On Wed, 13 Nov 2019 12:12:41 +0200
Roi Dayan <roid@...lanox.com> wrote:

> +static void print_masked_type(__u32 type_max,
> +			      __u32 (*rta_getattr_type)(const struct rtattr *),
> +			      const char *name, struct rtattr *attr,
> +			      struct rtattr *mask_attr)
> +{
> +	SPRINT_BUF(namefrm);
> +	__u32 value, mask;
> +	SPRINT_BUF(out);
> +	size_t done;
> +
> +	if (attr) {

code is cleaner if you use short circuit return here. i.e

	if (!attr)
		return;

...