netdev - Re: [PATCH iproute2 WIP] ifstat: use new RTM

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Message-ID: <20160420115347.6a43d7f7@xeon-e3>
Date:	Wed, 20 Apr 2016 11:53:47 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Roopa Prabhu <roopa@...ulusnetworks.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 WIP] ifstat: use new RTM_GETSTATS api

On Wed, 20 Apr 2016 09:16:15 -0700
Roopa Prabhu <roopa@...ulusnetworks.com> wrote:

> +int rtnl_wilddump_stats_req_filter(struct rtnl_handle *rth, int family, int type,
> +				   __u32 filt_mask)
> +{
> +	struct {
> +		struct nlmsghdr nlh;
> +		struct if_stats_msg ifsm;
> +	} req;

Please use C99 initialization instead of memset in new code.

> +	int err;
> +
> +	memset(&req, 0, sizeof(req));
> +	req.nlh.nlmsg_len = sizeof(req);
> +	req.nlh.nlmsg_type = type;
> +	req.nlh.nlmsg_flags = NLM_F_DUMP|NLM_F_REQUEST;
> +	req.nlh.nlmsg_pid = 0;
> +	req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
> +	req.ifsm.family = family;
> +	req.ifsm.filter_mask = filt_mask;
> +
> +	err = send(rth->fd, (void*)&req, sizeof(req), 0);
> +
> +	return err;

Why not just:
        return send(rth->fd, &req, sizoef(req), 0);

> +}