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Message-ID: <20230127130830.1481526-2-steen.hegelund@microchip.com>
Date: Fri, 27 Jan 2023 14:08:23 +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>,
"Steen Hegelund" <Steen.Hegelund@...rochip.com>,
Daniel Machon <daniel.machon@...rochip.com>,
Horatiu Vultur <horatiu.vultur@...rochip.com>,
Lars Povlsen <lars.povlsen@...rochip.com>,
Dan Carpenter <error27@...il.com>,
Michael Walle <michael@...le.cc>
Subject: [PATCH net-next 1/8] net: microchip: sparx5: Add support for getting keysets without a type id
When there is only one keyset available for a certain VCAP rule size, the
particular keyset does not need a type id when encoded in the VCAP
Hardware.
This provides support for getting a keyset from a rule, when this is the
case: only one keyset fits this rule size.
Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
---
.../net/ethernet/microchip/vcap/vcap_api.c | 24 ++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c
index 83223c4770f2..2402126d87c2 100644
--- a/drivers/net/ethernet/microchip/vcap/vcap_api.c
+++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c
@@ -3264,6 +3264,28 @@ static int vcap_rule_get_key(struct vcap_rule *rule,
return 0;
}
+/* Find a keyset having the same size as the provided rule, where the keyset
+ * does not have a type id.
+ */
+static int vcap_rule_get_untyped_keyset(struct vcap_rule_internal *ri,
+ struct vcap_keyset_list *matches)
+{
+ struct vcap_control *vctrl = ri->vctrl;
+ enum vcap_type vt = ri->admin->vtype;
+ const struct vcap_set *keyfield_set;
+ int idx;
+
+ keyfield_set = vctrl->vcaps[vt].keyfield_set;
+ for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) {
+ if (keyfield_set[idx].sw_per_item == ri->keyset_sw &&
+ keyfield_set[idx].type_id == (u8)-1) {
+ vcap_keyset_list_add(matches, idx);
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
/* Get the keysets that matches the rule key type/mask */
int vcap_rule_get_keysets(struct vcap_rule_internal *ri,
struct vcap_keyset_list *matches)
@@ -3277,7 +3299,7 @@ int vcap_rule_get_keysets(struct vcap_rule_internal *ri,
err = vcap_rule_get_key(&ri->data, VCAP_KF_TYPE, &kf);
if (err)
- return err;
+ return vcap_rule_get_untyped_keyset(ri, matches);
if (kf.ctrl.type == VCAP_FIELD_BIT) {
value = kf.data.u1.value;
--
2.39.1
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