netdev - Re: [PATCH v3 iproute2 net-next] erspan: add erspan version II support

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Date:   Tue, 19 Dec 2017 17:51:46 -0800
From:   William Tu <u9012063@...il.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 iproute2 net-next] erspan: add erspan version II support

On Tue, Dec 19, 2017 at 5:28 PM, David Ahern <dsahern@...il.com> wrote:
> Hi William:
>
> On 12/19/17 6:08 PM, William Tu wrote:
>> @@ -343,6 +355,26 @@ get_failed:
>>                               invarg("invalid erspan index\n", *argv);
>>                       if (erspan_idx & ~((1<<20) - 1) || erspan_idx == 0)
>>                               invarg("erspan index must be > 0 and <= 20-bit\n", *argv);
>> +             } else if (strcmp(*argv, "erspan_ver") == 0) {
>> +                     NEXT_ARG();
>> +                     if (get_u8(&erspan_ver, *argv, 0))
>> +                             invarg("invalid erspan version\n", *argv);
>> +                     if (erspan_ver != 1 && erspan_ver != 2)
>> +                             invarg("erspan version must be 1 or 2\n", *argv);
>> +             } else if (strcmp(*argv, "erspan_dir") == 0) {
>> +                     NEXT_ARG();
>> +                     if (strcmp(*argv, "ingress") == 0 ||
>> +                         strcmp(*argv, "in") == 0)
>> +                             erspan_dir = 0;
>> +                     else if (strcmp(*argv, "egress") == 0 ||
>> +                              strcmp(*argv, "e") == 0)
>
> iproute2 has a matches() function that should be used -- it basically
> allows whatever shorthand notation matches -- in this case e, eg, egr,
> egres, egress all match. Checkout ip/iplink.c and search for matches.
>
Hi David,
Thanks, will fix it in next version.
William