netdev - Re: [PATCH v4] iproute2: macvlan: add "source" mode

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Date:   Sat, 12 Nov 2016 10:12:33 +0300
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Michael Braun <michael-dev@...i-braun.de>
Cc:     netdev@...r.kernel.org, projekt-wlan@....tu-ilmenau.de,
        steweg@...il.com
Subject: Re: [PATCH v4] iproute2: macvlan: add "source" mode

On Thu, 27 Oct 2016 12:44:36 +0200
Michael Braun <michael-dev@...i-braun.de> wrote:

> Adjusting iproute2 utility to support new macvlan link type mode called
> "source".
> 
> Example of commands that can be applied:
>   ip link add link eth0 name macvlan0 type macvlan mode source
>   ip link set link dev macvlan0 type macvlan macaddr add 00:11:11:11:11:11
>   ip link set link dev macvlan0 type macvlan macaddr del 00:11:11:11:11:11
>   ip link set link dev macvlan0 type macvlan macaddr flush
>   ip -details link show dev macvlan0
> 
> Based on previous work of Stefan Gula <steweg@...il.com>
> 
> Signed-off-by: Michael Braun <michael-dev@...i-braun.de>
> 
> Cc: steweg@...il.com
> 
> v4:
>  - add MACADDR_SET support
>  - skip FLAG_UNICAST / FLAG_UNICAST_ALL as this is not upstream
>  - fix man page

The patch looks good, but needs to be cleaned up.

Does not apply to current iproute2 git, and also has minor checkpatch issue.

--- ip/iplink_macvlan.c
+++ ip/iplink_macvlan.c
@@ -46,7 +51,14 @@ static void explain(struct link_util *lu)
 
 static int mode_arg(const char *arg)
 {
-        fprintf(stderr, "Error: argument of \"mode\" must be \"private\", \"vepa\", \"bridge\" or \"passthru\", not \"%s\"\n",
+	fprintf(stderr, "Error: argument of \"mode\" must be \"private\", \"vepa\", \"bridge\", \"passthru\" or \"source\", not \"%s\"\n",
+		arg);
+	return -1;
+}
+
+static int flag_arg(const char *arg)
+{
+	fprintf(stderr, "Error: argument of \"flag\" must be \"nopromisc\" or \"null\", not \"%s\"\n",
 		arg);
 	return -1;
 }


WARNING: unnecessary whitespace before a quoted newline
#59: FILE: ip/iplink_macvlan.c:35:
+		"MODE_FLAG: null | nopromisc \n"