netdev - Re: [PATCH net v5 2/2] net/mlx5e: Don't overwrite pedit action when multiple pedit used

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Message-ID: <CAJ3xEMgXFmDBk6fj2QWNgPYZktKnU5E9V1PvTqN1a-feTq+mfQ@mail.gmail.com>
Date:   Tue, 29 Jan 2019 22:17:11 +0200
From:   Or Gerlitz <gerlitz.or@...il.com>
To:     David Miller <davem@...emloft.net>,
        Saeed Mahameed <saeedm@...lanox.com>
Cc:     Linux Netdev List <netdev@...r.kernel.org>,
        Tonghao Zhang <xiangxia.m.yue@...il.com>
Subject: Re: [PATCH net v5 2/2] net/mlx5e: Don't overwrite pedit action when
 multiple pedit used

On Tue, Jan 29, 2019 at 8:05 PM <xiangxia.m.yue@...il.com> wrote:
> From: Tonghao Zhang <xiangxia.m.yue@...il.com>
>
> In some case, we may use multiple pedit actions to modify packets.
> The command shown as below: the last pedit action is effective.
>
> $ tc filter add dev netdev_rep parent ffff: protocol ip prio 1    \
>         flower skip_sw ip_proto icmp dst_ip 3.3.3.3        \
>         action pedit ex munge ip dst set 192.168.1.100 pipe    \
>         action pedit ex munge eth src set 00:00:00:00:00:01 pipe    \
>         action pedit ex munge eth dst set 00:00:00:00:00:02 pipe    \
>         action csum ip pipe    \
>         action tunnel_key set src_ip 1.1.1.100 dst_ip 1.1.1.200 dst_port 4789 id 100 \
>         action mirred egress redirect dev vxlan0
>
> To fix it, we add max_mod_hdr_actions to mlx5e_tc_flow_parse_attr struction,
> max_mod_hdr_actions will store the max pedit action number we support and
> num_mod_hdr_actions indicates how many pedit action we used, and store all
> pedit action to mod_hdr_actions.
>
> Fixes: d79b6df6b10a ("net/mlx5e: Add parsing of TC pedit actions to HW format")
> Cc: Or Gerlitz <ogerlitz@...lanox.com>
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>
> Reviewed-by: Or Gerlitz <ogerlitz@...lanox.com>
> ---
> v3: Remove the unnecessary init.
> v2: Fix comment message and change tag from net-next to net.

Same here, this is good to go upstream, well done Tonghao!