linux-kernel - RE: [PATCH net-next] net: flow_offload: add support for ARP frame matching

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Message-ID: <MW4PR11MB577629A93F7EB795DF319412FD3B9@MW4PR11MB5776.namprd11.prod.outlook.com>
Date:   Fri, 4 Nov 2022 12:50:00 +0000
From:   "Drewek, Wojciech" <wojciech.drewek@...el.com>
To:     Steen Hegelund <steen.hegelund@...rochip.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
CC:     Louis Peens <louis.peens@...igine.com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        Simon Horman <simon.horman@...igine.com>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        Maksym Glubokiy <maksym.glubokiy@...ision.eu>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: RE: [PATCH net-next] net: flow_offload: add support for ARP frame
 matching



> -----Original Message-----
> From: Steen Hegelund <steen.hegelund@...rochip.com>
> Sent: piątek, 4 listopada 2022 13:33
> To: David S . Miller <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo
> Abeni <pabeni@...hat.com>
> Cc: Steen Hegelund <steen.hegelund@...rochip.com>; Louis Peens <louis.peens@...igine.com>; Baowen Zheng
> <baowen.zheng@...igine.com>; Simon Horman <simon.horman@...igine.com>; Nguyen, Anthony L
> <anthony.l.nguyen@...el.com>; Drewek, Wojciech <wojciech.drewek@...el.com>; Maksym Glubokiy
> <maksym.glubokiy@...ision.eu>; Pablo Neira Ayuso <pablo@...filter.org>; netdev@...r.kernel.org; linux-kernel@...r.kernel.org;
> UNGLinuxDriver@...rochip.com; Horatiu Vultur <horatiu.vultur@...rochip.com>
> Subject: [PATCH net-next] net: flow_offload: add support for ARP frame matching
> 
> This adds a new flow_rule_match_arp function that allows drivers
> to be able to dissect APR frames.

ARP* frames
Other than that looks ok.
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>

> 
> Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
> ---
>  include/net/flow_offload.h | 6 ++++++
>  net/core/flow_offload.c    | 7 +++++++
>  2 files changed, 13 insertions(+)
> 
> diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
> index 7a60bc6d72c9..0400a0ac8a29 100644
> --- a/include/net/flow_offload.h
> +++ b/include/net/flow_offload.h
> @@ -32,6 +32,10 @@ struct flow_match_vlan {
>  	struct flow_dissector_key_vlan *key, *mask;
>  };
> 
> +struct flow_match_arp {
> +	struct flow_dissector_key_arp *key, *mask;
> +};
> +
>  struct flow_match_ipv4_addrs {
>  	struct flow_dissector_key_ipv4_addrs *key, *mask;
>  };
> @@ -98,6 +102,8 @@ void flow_rule_match_vlan(const struct flow_rule *rule,
>  			  struct flow_match_vlan *out);
>  void flow_rule_match_cvlan(const struct flow_rule *rule,
>  			   struct flow_match_vlan *out);
> +void flow_rule_match_arp(const struct flow_rule *rule,
> +			 struct flow_match_arp *out);
>  void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
>  				struct flow_match_ipv4_addrs *out);
>  void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
> diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
> index abe423fd5736..acfc1f88ea79 100644
> --- a/net/core/flow_offload.c
> +++ b/net/core/flow_offload.c
> @@ -97,6 +97,13 @@ void flow_rule_match_cvlan(const struct flow_rule *rule,
>  }
>  EXPORT_SYMBOL(flow_rule_match_cvlan);
> 
> +void flow_rule_match_arp(const struct flow_rule *rule,
> +			 struct flow_match_arp *out)
> +{
> +	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ARP, out);
> +}
> +EXPORT_SYMBOL(flow_rule_match_arp);
> +
>  void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
>  				struct flow_match_ipv4_addrs *out)
>  {
> --
> 2.38.1