netdev - [PATCH net-next v4 05/15] ice: allocate devlink for subfunction

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Message-ID: <20240813215005.3647350-6-anthony.l.nguyen@intel.com>
Date: Tue, 13 Aug 2024 14:49:54 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: anthony.l.nguyen@...el.com,
	michal.swiatkowski@...ux.intel.com,
	jiri@...dia.com,
	shayd@...dia.com,
	wojciech.drewek@...el.com,
	horms@...nel.org,
	sridhar.samudrala@...el.com,
	mateusz.polchlopek@...el.com,
	kalesh-anakkur.purayil@...adcom.com,
	michal.kubiak@...el.com,
	pio.raczynski@...il.com,
	przemyslaw.kitszel@...el.com,
	jacob.e.keller@...el.com,
	maciej.fijalkowski@...el.com,
	Rafal Romanowski <rafal.romanowski@...el.com>
Subject: [PATCH net-next v4 05/15] ice: allocate devlink for subfunction

From: Piotr Raczynski <piotr.raczynski@...el.com>

Allocate devlink for subfunction instance.

Create header file for subfunction device. Define subfunction device
structure there as it is needed for devlink allocation.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
Signed-off-by: Piotr Raczynski <piotr.raczynski@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 .../net/ethernet/intel/ice/devlink/devlink.c  | 31 +++++++++++++++++++
 .../net/ethernet/intel/ice/devlink/devlink.h  |  1 +
 drivers/net/ethernet/intel/ice/ice_sf_eth.h   | 15 +++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 drivers/net/ethernet/intel/ice/ice_sf_eth.h

diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
index b7eb1b56f2c6..445538959459 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -10,6 +10,7 @@
 #include "ice_eswitch.h"
 #include "ice_fw_update.h"
 #include "ice_dcb_lib.h"
+#include "ice_sf_eth.h"
 
 /* context for devlink info version reporting */
 struct ice_info_ctx {
@@ -1282,6 +1283,8 @@ static const struct devlink_ops ice_devlink_ops = {
 	.port_new = ice_devlink_port_new,
 };
 
+static const struct devlink_ops ice_sf_devlink_ops;
+
 static int
 ice_devlink_enable_roce_get(struct devlink *devlink, u32 id,
 			    struct devlink_param_gset_ctx *ctx)
@@ -1564,6 +1567,34 @@ struct ice_pf *ice_allocate_pf(struct device *dev)
 	return devlink_priv(devlink);
 }
 
+/**
+ * ice_allocate_sf - Allocate devlink and return SF structure pointer
+ * @dev: the device to allocate for
+ * @pf: pointer to the PF structure
+ *
+ * Allocate a devlink instance for SF.
+ *
+ * Return: ice_sf_priv pointer to allocated memory or ERR_PTR in case of error
+ */
+struct ice_sf_priv *ice_allocate_sf(struct device *dev, struct ice_pf *pf)
+{
+	struct devlink *devlink;
+	int err;
+
+	devlink = devlink_alloc(&ice_sf_devlink_ops, sizeof(struct ice_sf_priv),
+				dev);
+	if (!devlink)
+		return ERR_PTR(-ENOMEM);
+
+	err = devl_nested_devlink_set(priv_to_devlink(pf), devlink);
+	if (err) {
+		devlink_free(devlink);
+		return ERR_PTR(err);
+	}
+
+	return devlink_priv(devlink);
+}
+
 /**
  * ice_devlink_register - Register devlink interface for this PF
  * @pf: the PF to register the devlink for.
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.h b/drivers/net/ethernet/intel/ice/devlink/devlink.h
index d291c0e2e17b..1af3b0763fbb 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.h
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.h
@@ -5,6 +5,7 @@
 #define _ICE_DEVLINK_H_
 
 struct ice_pf *ice_allocate_pf(struct device *dev);
+struct ice_sf_priv *ice_allocate_sf(struct device *dev, struct ice_pf *pf);
 
 void ice_devlink_register(struct ice_pf *pf);
 void ice_devlink_unregister(struct ice_pf *pf);
diff --git a/drivers/net/ethernet/intel/ice/ice_sf_eth.h b/drivers/net/ethernet/intel/ice/ice_sf_eth.h
new file mode 100644
index 000000000000..267da33a0135
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_sf_eth.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2024, Intel Corporation. */
+
+#ifndef _ICE_SF_ETH_H_
+#define _ICE_SF_ETH_H_
+
+#include <linux/auxiliary_bus.h>
+#include "ice.h"
+
+struct ice_sf_priv {
+	struct ice_sf_dev *dev;
+	struct devlink_port devlink_port;
+};
+
+#endif /* _ICE_SF_ETH_H_ */
-- 
2.42.0