netdev - Re: [bpf-next PATCH v2 14/18] bpf: sockmap, add sample option to test apply

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Message-Id: <20180315.144252.131346271384145814.davem@davemloft.net>
Date:   Thu, 15 Mar 2018 14:42:52 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     john.fastabend@...il.com
Cc:     ast@...nel.org, daniel@...earbox.net, davejwatson@...com,
        netdev@...r.kernel.org
Subject: Re: [bpf-next PATCH v2 14/18] bpf: sockmap, add sample option to
 test apply_bytes helper

From: John Fastabend <john.fastabend@...il.com>
Date: Mon, 12 Mar 2018 12:24:16 -0700

> This adds an option to test the apply_bytes helper. This option lets
> the user specify an int on the command line specifying how much data
> each verdict should apply to.
> 
> When this is set a map entry is set with the bytes input by the user
> and then the specified program --txmsg or --txmsg_redir will use the
> value and set the applied data. If no other option is set then a
> default --txmsg_apply program is run. This program will drop pkts
> if an error is detected on the bytes map lookup. Useful to verify
> the map lookup and apply helper are working and causing a hard
> error if it is not.
> 
> Signed-off-by: John Fastabend <john.fastabend@...il.com>

Acked-by: David S. Miller <davem@...emloft.net>