Thread (8 messages) 8 messages, 2 authors, 2014-12-03

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

From: Roopa Prabhu <hidden>
Date: 2014-12-03 14:40:25

On 12/2/14, 5:13 PM, vadim4j@gmail.com wrote:
On Tue, Dec 02, 2014 at 04:55:44PM -0800, Roopa Prabhu wrote:
quoted
quoted
  	int master;
+	char *link_kind;
The name can be just "kind", given all the others dont use the link prefix
quoted
  } filter;
OK
quoted
quoted
+	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
quoted
+	} else if (filter.link_kind)
you have if (filter.link_kind) twice, you can use a single if without the
else.
quoted
+		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.
I was just saying, it could be:

if (filter.link_kind) {
     if (tb[IFLA_LINKINFO]) {
         char *kind = parse_link_kind(tb[IFLA_LINKINFO]);
         if (strcmp(kind, filter.kind))
             return -1;
     } else {
       return -1;
     }
}
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