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Subject[PATCH net-next 2/5] net: microchip: sparx5: Add support to check for existing VCAP rule id
Date
Add a new function that just checks if the VCAP rule id is already used by
an existing rule.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
---
drivers/net/ethernet/microchip/vcap/vcap_api.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c
index 4e038f96a131..f1dc4fd6bb96 100644
--- a/drivers/net/ethernet/microchip/vcap/vcap_api.c
+++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c
@@ -920,6 +920,20 @@ int vcap_set_rule_set_actionset(struct vcap_rule *rule,
}
EXPORT_SYMBOL_GPL(vcap_set_rule_set_actionset);

+/* Check if a rule with this id exists */
+static bool vcap_rule_exists(struct vcap_control *vctrl, u32 id)
+{
+ struct vcap_rule_internal *ri;
+ struct vcap_admin *admin;
+
+ /* Look for the rule id in all vcaps */
+ list_for_each_entry(admin, &vctrl->list, list)
+ list_for_each_entry(ri, &admin->rules, list)
+ if (ri->data.id == id)
+ return true;
+ return false;
+}
+
/* Find a rule with a provided rule id */
static struct vcap_rule_internal *vcap_lookup_rule(struct vcap_control *vctrl,
u32 id)
@@ -1866,7 +1880,7 @@ static u32 vcap_set_rule_id(struct vcap_rule_internal *ri)
return ri->data.id;

for (u32 next_id = 1; next_id < ~0; ++next_id) {
- if (!vcap_lookup_rule(ri->vctrl, next_id)) {
+ if (!vcap_rule_exists(ri->vctrl, next_id)) {
ri->data.id = next_id;
break;
}
@@ -2103,7 +2117,7 @@ struct vcap_rule *vcap_alloc_rule(struct vcap_control *vctrl,
if (vctrl->vcaps[admin->vtype].rows == 0)
return ERR_PTR(-EINVAL);
/* Check if a rule with this id already exists */
- if (vcap_lookup_rule(vctrl, id))
+ if (vcap_rule_exists(vctrl, id))
return ERR_PTR(-EEXIST);
/* Check if there is room for the rule in the block(s) of the VCAP */
maxsize = vctrl->vcaps[admin->vtype].sw_count; /* worst case rule size */
--
2.39.0
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