[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20221109114116.3612477-4-steen.hegelund@microchip.com>
Date: Wed, 9 Nov 2022 12:41:11 +0100
From: Steen Hegelund <steen.hegelund@...rochip.com>
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>,
<UNGLinuxDriver@...rochip.com>,
Randy Dunlap <rdunlap@...radead.org>,
"Casper Andersson" <casper.casan@...il.com>,
Russell King <rmk+kernel@...linux.org.uk>,
Wan Jiabing <wanjiabing@...o.com>,
"Nathan Huckleberry" <nhuck@...gle.com>,
<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
"Daniel Machon" <daniel.machon@...rochip.com>,
Horatiu Vultur <horatiu.vultur@...rochip.com>,
Lars Povlsen <lars.povlsen@...rochip.com>
Subject: [PATCH net-next v6 3/8] net: microchip: sparx5: Find VCAP lookup from chain id
Add a helper function that finds the lookup index in a VCAP instance from
the chain id.
Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
---
drivers/net/ethernet/microchip/vcap/vcap_api.c | 17 +++++++++++++++++
.../ethernet/microchip/vcap/vcap_api_client.h | 2 ++
2 files changed, 19 insertions(+)
diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c
index ace2582d8552..d5b62e43d83f 100644
--- a/drivers/net/ethernet/microchip/vcap/vcap_api.c
+++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c
@@ -644,6 +644,23 @@ static int vcap_write_rule(struct vcap_rule_internal *ri)
return 0;
}
+/* Convert a chain id to a VCAP lookup index */
+int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid)
+{
+ int lookup_first = admin->vinst * admin->lookups_per_instance;
+ int lookup_last = lookup_first + admin->lookups_per_instance;
+ int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE;
+ int cid = admin->first_cid;
+ int lookup;
+
+ for (lookup = lookup_first; lookup < lookup_last; ++lookup,
+ cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE)
+ if (cur_cid >= cid && cur_cid < cid_next)
+ return lookup;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup);
+
/* Lookup a vcap instance using chain id */
struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid)
{
diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
index 577395402a9a..7d9a227ef834 100644
--- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
+++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h
@@ -184,6 +184,8 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule,
enum vcap_action_field action, u32 value);
/* VCAP lookup operations */
+/* Convert a chain id to a VCAP lookup index */
+int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid);
/* Lookup a vcap instance using chain id */
struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid);
/* Find information on a key field in a rule */
--
2.38.1
Powered by blists - more mailing lists