netdev - Re: [PATCH iproute2] ip link: Show devices by link type

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Date:	Wed, 3 Dec 2014 03:13:05 +0200
From:	vadim4j@...il.com
To:	Roopa Prabhu <roopa@...ulusnetworks.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] ip link: Show devices by link type

On Tue, Dec 02, 2014 at 04:55:44PM -0800, Roopa Prabhu wrote:
> >  	int master;
> >+	char *link_kind;
> The name can be just "kind", given all the others dont use the link prefix
> >  } filter;
OK

> >+	if (filter.link_kind && tb[IFLA_LINKINFO]) {
> >+		char *link_kind = parse_link_kind(tb[IFLA_LINKINFO]);
> >+		if (strcmp(link_kind, filter.link_kind)) {
> >+			return -1;
> >+		}
> you can skip the braces
> >+	} else if (filter.link_kind)
> 
> you have if (filter.link_kind) twice, you can use a single if without the
> else.
> >+		return -1;
> >+
I need to skip interfaces which has not IFLA_LINKINFO attribute,
w/o "else if(...)" I get bridges with normal ether devices:
    
    bash# ip link show type bridge

    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default 
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    2: enp0s25: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
        link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
    5: br0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default 
        link/ether 6e:02:f9:17:7f:10 brd ff:ff:ff:ff:ff:ff

but expected result should be only bridges.

Regards,
Vadim
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