From: Steen Hegelund Date: Tue, 14 Feb 2023 10:40:44 +0000 (+0100) Subject: net: microchip: sparx5: Improve the error handling for linked rules X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b5b0c364598835739451e6cd8a9dd84d41089c02;p=linux.git net: microchip: sparx5: Improve the error handling for linked rules Ensure that an error is returned if the VCAP instance was not found. The chain offset (diff) is allowed to be zero as this just means that the user did not request rules to be linked. Signed-off-by: Steen Hegelund Signed-off-by: Paolo Abeni --- diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c index d73668dcc6b6d..82d5138f149e3 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_flower.c @@ -551,12 +551,16 @@ static int sparx5_tc_add_rule_link(struct vcap_control *vctrl, struct vcap_admin *to_admin = vcap_find_admin(vctrl, to_cid); int diff, err = 0; - diff = vcap_chain_offset(vctrl, from_cid, to_cid); - if (!(to_admin && diff > 0)) { + if (!to_admin) { pr_err("%s:%d: unsupported chain direction: %d\n", __func__, __LINE__, to_cid); return -EINVAL; } + + diff = vcap_chain_offset(vctrl, from_cid, to_cid); + if (!diff) + return 0; + if (admin->vtype == VCAP_TYPE_IS0 && to_admin->vtype == VCAP_TYPE_IS0) { /* Between IS0 instances the G_IDX value is used */