netdev - Re: [PATCH net-next v2 9/9] selftests: openvswitch: add emit

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Date: Wed, 5 Jun 2024 20:43:14 +0100
From: Simon Horman <horms@...nel.org>
To: Adrian Moreno <amorenoz@...hat.com>
Cc: netdev@...r.kernel.org, aconole@...hat.com, echaudro@...hat.com,
	i.maximets@....org, dev@...nvswitch.org,
	Pravin B Shelar <pshelar@....org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 9/9] selftests: openvswitch: add emit_sample
 test

On Mon, Jun 03, 2024 at 08:56:43PM +0200, Adrian Moreno wrote:
> Add a test to verify sampling packets via psample works.
> 
> In order to do that, create a subcommand in ovs-dpctl.py to listen to
> on the psample multicast group and print samples.
> 
> In order to also test simultaneous sFlow and psample actions and
> packet truncation, add missing parsing support for "userspace" and
> "trunc" actions.
> 
> Signed-off-by: Adrian Moreno <amorenoz@...hat.com>

...

> @@ -803,6 +819,25 @@ class ovsactions(nla):
>                  self["attrs"].append(["OVS_ACTION_ATTR_EMIT_SAMPLE", emitact])
>                  parsed = True
>  
> +            elif parse_starts_block(actstr, "userspace(", False):
> +                uact = self.userspace()
> +                actstr = uact.parse(actstr[len("userpsace(") : ])

nit: userspace

     Flagged by checkpatch.pl --codespell

> +                self["attrs"].append(["OVS_ACTION_ATTR_USERSPACE", uact])
> +                parsed = True
> +
> +            elif parse_starts_block(actstr, "trunc", False):
> +                parencount += 1
> +                actstr, val = parse_extract_field(
> +                    actstr,
> +                    "trunc(",
> +                    r"([0-9]+)",
> +                    int,
> +                    False,
> +                    None,
> +                )
> +                self["attrs"].append(["OVS_ACTION_ATTR_TRUNC", val])
> +                parsed = True
> +
>              actstr = actstr[strspn(actstr, ", ") :]
>              while parencount > 0:
>                  parencount -= 1