netdev - [RFC PATCH net-next v6 3/4] flow_offload: Introduce flow_match

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Date:   Mon, 18 Jul 2022 14:18:12 +0200
From:   Marcin Szycik <marcin.szycik@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     anthony.l.nguyen@...el.com, davem@...emloft.net,
        xiyou.wangcong@...il.com, jesse.brandeburg@...el.com,
        gustavoars@...nel.org, baowen.zheng@...igine.com,
        boris.sukholitko@...adcom.com, edumazet@...gle.com,
        kuba@...nel.org, jhs@...atatu.com, jiri@...nulli.us,
        kurt@...utronix.de, pablo@...filter.org, pabeni@...hat.com,
        paulb@...dia.com, simon.horman@...igine.com,
        komachi.yoshiki@...il.com, zhangkaiheb@....com,
        intel-wired-lan@...ts.osuosl.org,
        michal.swiatkowski@...ux.intel.com, wojciech.drewek@...el.com,
        alexandr.lobakin@...el.com, gnault@...hat.com,
        mostrows@...akeasy.net, paulus@...ba.org
Subject: [RFC PATCH net-next v6 3/4] flow_offload: Introduce flow_match_pppoe

From: Wojciech Drewek <wojciech.drewek@...el.com>

Allow to offload PPPoE filters by adding flow_rule_match_pppoe.
Drivers can extract PPPoE specific fields from now on.

Signed-off-by: Wojciech Drewek <wojciech.drewek@...el.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 a8d8512b7059..2a9a9e42e7fd 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -76,6 +76,10 @@ struct flow_match_ct {
 	struct flow_dissector_key_ct *key, *mask;
 };
 
+struct flow_match_pppoe {
+	struct flow_dissector_key_pppoe *key, *mask;
+};
+
 struct flow_rule;
 
 void flow_rule_match_meta(const struct flow_rule *rule,
@@ -122,6 +126,8 @@ void flow_rule_match_enc_opts(const struct flow_rule *rule,
 			      struct flow_match_enc_opts *out);
 void flow_rule_match_ct(const struct flow_rule *rule,
 			struct flow_match_ct *out);
+void flow_rule_match_pppoe(const struct flow_rule *rule,
+			   struct flow_match_pppoe *out);
 
 enum flow_action_id {
 	FLOW_ACTION_ACCEPT		= 0,
diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
index 0d3075d3c8fb..8cfb63528d18 100644
--- a/net/core/flow_offload.c
+++ b/net/core/flow_offload.c
@@ -230,6 +230,13 @@ void flow_rule_match_ct(const struct flow_rule *rule,
 }
 EXPORT_SYMBOL(flow_rule_match_ct);
 
+void flow_rule_match_pppoe(const struct flow_rule *rule,
+			   struct flow_match_pppoe *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_PPPOE, out);
+}
+EXPORT_SYMBOL(flow_rule_match_pppoe);
+
 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
 					  void *cb_ident, void *cb_priv,
 					  void (*release)(void *cb_priv))
-- 
2.35.1