From: Ido Schimmel <idosch@nvidia.com>
To: "Asbjørn Sloth Tønnesen" <ast@fiberby.net>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Petr Machata <petrm@nvidia.com>
Subject: Re: [PATCH net-next] mlxsw: spectrum_flower: validate control flags
Date: Wed, 17 Apr 2024 20:05:00 +0300 [thread overview]
Message-ID: <ZiABPNMbOOYGiHCq@shredder> (raw)
In-Reply-To: <20240417135131.99921-1-ast@fiberby.net>
On Wed, Apr 17, 2024 at 01:51:20PM +0000, Asbjørn Sloth Tønnesen wrote:
> This driver currently doesn't support any control flags.
>
> Use flow_rule_has_control_flags() to check for control flags,
> such as can be set through `tc flower ... ip_flags frag`.
>
> In case any control flags are masked, flow_rule_has_control_flags()
> sets a NL extended error message, and we return -EOPNOTSUPP.
>
> Only compile-tested.
>
> Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Without patch:
+ tc qdisc add dev swp1 clsact
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags frag action drop
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags nofrag action drop
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags firstfrag action drop
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags nofirstfrag action drop
With patch:
+ tc qdisc add dev swp1 clsact
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags frag action drop
Error: mlxsw_spectrum: Unsupported match on control.flags 0x1.
We have an error talking to the kernel
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags nofrag action drop
Error: mlxsw_spectrum: Unsupported match on control.flags 0x1.
We have an error talking to the kernel
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags firstfrag action drop
Error: mlxsw_spectrum: Unsupported match on control.flags 0x2.
We have an error talking to the kernel
+ tc filter add dev swp1 ingress pref 1 proto ip flower skip_sw ip_flags nofirstfrag action drop
Error: mlxsw_spectrum: Unsupported match on control.flags 0x2.
We have an error talking to the kernel
Thanks!
next prev parent reply other threads:[~2024-04-17 17:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-17 13:51 [PATCH net-next] mlxsw: spectrum_flower: validate control flags Asbjørn Sloth Tønnesen
2024-04-17 15:57 ` Petr Machata
2024-04-18 12:58 ` Petr Machata
2024-04-17 17:05 ` Ido Schimmel [this message]
2024-04-19 0:10 ` patchwork-bot+netdevbpf
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