netdev - Re: [PATCH v2 iproute2 -next 2/2] ipxfrm: allow to setup filter when dumping SA

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Date:	Wed, 19 Mar 2014 13:39:55 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2 iproute2 -next 2/2] ipxfrm: allow to setup filter
 when dumping SA

On Wed, 19 Mar 2014 17:52:08 +0100
Nicolas Dichtel <nicolas.dichtel@...nd.com> wrote:

> diff --git a/ip/xfrm_state.c b/ip/xfrm_state.c
> index 140a4503b799..8295223f8118 100644
> --- a/ip/xfrm_state.c
> +++ b/ip/xfrm_state.c
> @@ -1136,7 +1136,35 @@ static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
>  		}
>  
>  	} else {
> -		if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
> +		struct xfrm_address_filter addrfilter;
> +		struct {
> +			struct nlmsghdr n;
> +			char buf[NLMSG_BUF_SIZE];
> +		} req;
> +
> +		memset(&addrfilter, 0, sizeof(addrfilter));
> +		addrfilter.family = filter.xsinfo.family;
> +		memcpy(&addrfilter.saddr, &filter.xsinfo.saddr,
> +		       sizeof(xfrm_address_t));
> +		addrfilter.splen = filter.id_src_mask;
> +		memcpy(&addrfilter.daddr, &filter.xsinfo.id.daddr,
> +		       sizeof(xfrm_address_t));
> +		addrfilter.dplen = filter.id_dst_mask;
> +

I prefer to see C99 initializers for stack variables when possible
instead of using memset().

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