netdev - Re: [PATCH net-next 09/16] bnxt_en: Refactor bnxt_dl

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Date:   Sun, 26 Jan 2020 12:32:19 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Michael Chan <michael.chan@...adcom.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Subject: Re: [PATCH net-next 09/16] bnxt_en: Refactor bnxt_dl_register()

Sun, Jan 26, 2020 at 10:03:03AM CET, michael.chan@...adcom.com wrote:
>From: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
>
>Define bnxt_dl_params_register() and bnxt_dl_params_unregister()
>functions and move params register/unregister code to these newly
>defined functions. This patch is in preparation to register
>devlink irrespective of firmware spec. version in the next patch.
>
>Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
>Signed-off-by: Michael Chan <michael.chan@...adcom.com>
>---
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 60 ++++++++++++++---------
> 1 file changed, 36 insertions(+), 24 deletions(-)
>
>diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>index 0c3d224..9253eed 100644
>--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>@@ -485,6 +485,38 @@ static const struct devlink_param bnxt_dl_params[] = {
> static const struct devlink_param bnxt_dl_port_params[] = {
> };
> 
>+static int bnxt_dl_params_register(struct bnxt *bp)
>+{
>+	int rc;
>+
>+	rc = devlink_params_register(bp->dl, bnxt_dl_params,
>+				     ARRAY_SIZE(bnxt_dl_params));
>+	if (rc) {
>+		netdev_warn(bp->dev, "devlink_params_register failed. rc=%d",
>+			    rc);
>+		return rc;
>+	}
>+	rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
>+					  ARRAY_SIZE(bnxt_dl_port_params));

Wait, this assumes that you have 1:1 devlink:devlink_port setup. Is that
correct? Don't you have other devlink_ports for eswitch representors
that have params?
 

>+	if (rc) {
>+		netdev_err(bp->dev, "devlink_port_params_register failed");
>+		devlink_params_unregister(bp->dl, bnxt_dl_params,
>+					  ARRAY_SIZE(bnxt_dl_params));
>+		return rc;
>+	}
>+	devlink_params_publish(bp->dl);
>+
>+	return 0;
>+}
>+
>+static void bnxt_dl_params_unregister(struct bnxt *bp)
>+{
>+	devlink_params_unregister(bp->dl, bnxt_dl_params,
>+				  ARRAY_SIZE(bnxt_dl_params));
>+	devlink_port_params_unregister(&bp->dl_port, bnxt_dl_port_params,
>+				       ARRAY_SIZE(bnxt_dl_port_params));
>+}
>+
> int bnxt_dl_register(struct bnxt *bp)
> {
> 	struct devlink *dl;
>@@ -520,40 +552,24 @@ int bnxt_dl_register(struct bnxt *bp)
> 	if (!BNXT_PF(bp))
> 		return 0;
> 
>-	rc = devlink_params_register(dl, bnxt_dl_params,
>-				     ARRAY_SIZE(bnxt_dl_params));
>-	if (rc) {
>-		netdev_warn(bp->dev, "devlink_params_register failed. rc=%d",
>-			    rc);
>-		goto err_dl_unreg;
>-	}
>-
> 	devlink_port_attrs_set(&bp->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
> 			       bp->pf.port_id, false, 0,
> 			       bp->switch_id, sizeof(bp->switch_id));
> 	rc = devlink_port_register(dl, &bp->dl_port, bp->pf.port_id);
> 	if (rc) {
> 		netdev_err(bp->dev, "devlink_port_register failed");
>-		goto err_dl_param_unreg;
>+		goto err_dl_unreg;
> 	}
> 	devlink_port_type_eth_set(&bp->dl_port, bp->dev);
> 
>-	rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
>-					  ARRAY_SIZE(bnxt_dl_port_params));
>-	if (rc) {
>-		netdev_err(bp->dev, "devlink_port_params_register failed");
>+	rc = bnxt_dl_params_register(bp);
>+	if (rc)
> 		goto err_dl_port_unreg;
>-	}
>-
>-	devlink_params_publish(dl);
> 
> 	return 0;
> 
> err_dl_port_unreg:
> 	devlink_port_unregister(&bp->dl_port);
>-err_dl_param_unreg:
>-	devlink_params_unregister(dl, bnxt_dl_params,
>-				  ARRAY_SIZE(bnxt_dl_params));
> err_dl_unreg:
> 	devlink_unregister(dl);
> err_dl_free:
>@@ -570,12 +586,8 @@ void bnxt_dl_unregister(struct bnxt *bp)
> 		return;
> 
> 	if (BNXT_PF(bp)) {
>-		devlink_port_params_unregister(&bp->dl_port,
>-					       bnxt_dl_port_params,
>-					       ARRAY_SIZE(bnxt_dl_port_params));
>+		bnxt_dl_params_unregister(bp);
> 		devlink_port_unregister(&bp->dl_port);
>-		devlink_params_unregister(dl, bnxt_dl_params,
>-					  ARRAY_SIZE(bnxt_dl_params));
> 	}
> 	devlink_unregister(dl);
> 	devlink_free(dl);
>-- 
>2.5.1
>