Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/linux

Tony Nguyen says:

====================
Prepare for Intel IPU E2000 (GEN3)

This is the first part in introducing RDMA support for idpf.

----------------------------------------------------------------
Tatyana Nikolova says:

To align with review comments, the patch series introducing RDMA
RoCEv2 support for the Intel Infrastructure Processing Unit (IPU)
E2000 line of products is going to be submitted in three parts:

1. Modify ice to use specific and common IIDC definitions and
   pass a core device info to irdma.

2. Add RDMA support to idpf and modify idpf to use specific and
   common IIDC definitions and pass a core device info to irdma.

3. Add RDMA RoCEv2 support for the E2000 products, referred to as
   GEN3 to irdma.

This first part is a 5 patch series based on the original
"iidc/ice/irdma: Update IDC to support multiple consumers" patch
to allow for multiple CORE PCI drivers, using the auxbus.

Patches:
1) Move header file to new name for clarity and replace ice
   specific DSCP define with a kernel equivalent one in irdma
2) Unify naming convention
3) Separate header file into common and driver specific info
4) Replace ice specific DSCP define with a kernel equivalent
   one in ice
5) Implement core device info struct and update drivers to use it
----------------------------------------------------------------

v1: https://lore.kernel.org/20250505212037.2092288-1-anthony.l.nguyen@intel.com

IWL reviews:
[v5] https://lore.kernel.org/20250416021549.606-1-tatyana.e.nikolova@intel.com
[v4] https://lore.kernel.org/20250225050428.2166-1-tatyana.e.nikolova@intel.com
[v3] https://lore.kernel.org/20250207194931.1569-1-tatyana.e.nikolova@intel.com
[v2] https://lore.kernel.org/20240824031924.421-1-tatyana.e.nikolova@intel.com
[v1] https://lore.kernel.org/20240724233917.704-1-tatyana.e.nikolova@intel.com

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/linux:
  iidc/ice/irdma: Update IDC to support multiple consumers
  ice: Replace ice specific DSCP mapping num with a kernel define
  iidc/ice/irdma: Break iidc.h into two headers
  iidc/ice/irdma: Rename to iidc_* convention
  iidc/ice/irdma: Rename IDC header file

====================

Link: https://patch.msgid.link/20250509200712.2911060-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

3 files changed, 138 insertions, 109 deletions

diff --git a/include/linux/net/intel/iidc.h b/include/linux/net/intel/iidc.h
deleted file mode 100644
index 13274c3def66..000000000000
--- a/include/linux/net/intel/iidc.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2021, Intel Corporation. */
-
-#ifndef _IIDC_H_
-#define _IIDC_H_
-
-#include <linux/auxiliary_bus.h>
-#include <linux/dcbnl.h>
-#include <linux/device.h>
-#include <linux/if_ether.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-
-enum iidc_event_type {
-	IIDC_EVENT_BEFORE_MTU_CHANGE,
-	IIDC_EVENT_AFTER_MTU_CHANGE,
-	IIDC_EVENT_BEFORE_TC_CHANGE,
-	IIDC_EVENT_AFTER_TC_CHANGE,
-	IIDC_EVENT_CRIT_ERR,
-	IIDC_EVENT_NBITS		/* must be last */
-};
-
-enum iidc_reset_type {
-	IIDC_PFR,
-	IIDC_CORER,
-	IIDC_GLOBR,
-};
-
-enum iidc_rdma_protocol {
-	IIDC_RDMA_PROTOCOL_IWARP = BIT(0),
-	IIDC_RDMA_PROTOCOL_ROCEV2 = BIT(1),
-};
-
-#define IIDC_MAX_USER_PRIORITY		8
-#define IIDC_MAX_DSCP_MAPPING		64
-#define IIDC_DSCP_PFC_MODE		0x1
-
-/* Struct to hold per RDMA Qset info */
-struct iidc_rdma_qset_params {
-	/* Qset TEID returned to the RDMA driver in
-	 * ice_add_rdma_qset and used by RDMA driver
-	 * for calls to ice_del_rdma_qset
-	 */
-	u32 teid;	/* Qset TEID */
-	u16 qs_handle; /* RDMA driver provides this */
-	u16 vport_id; /* VSI index */
-	u8 tc; /* TC branch the Qset should belong to */
-};
-
-struct iidc_qos_info {
-	u64 tc_ctx;
-	u8 rel_bw;
-	u8 prio_type;
-	u8 egress_virt_up;
-	u8 ingress_virt_up;
-};
-
-/* Struct to pass QoS info */
-struct iidc_qos_params {
-	struct iidc_qos_info tc_info[IEEE_8021QAZ_MAX_TCS];
-	u8 up2tc[IIDC_MAX_USER_PRIORITY];
-	u8 vport_relative_bw;
-	u8 vport_priority_type;
-	u8 num_tc;
-	u8 pfc_mode;
-	u8 dscp_map[IIDC_MAX_DSCP_MAPPING];
-};
-
-struct iidc_event {
-	DECLARE_BITMAP(type, IIDC_EVENT_NBITS);
-	u32 reg;
-};
-
-struct ice_pf;
-
-int ice_add_rdma_qset(struct ice_pf *pf, struct iidc_rdma_qset_params *qset);
-int ice_del_rdma_qset(struct ice_pf *pf, struct iidc_rdma_qset_params *qset);
-int ice_rdma_request_reset(struct ice_pf *pf, enum iidc_reset_type reset_type);
-int ice_rdma_update_vsi_filter(struct ice_pf *pf, u16 vsi_id, bool enable);
-void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos);
-int ice_alloc_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry);
-void ice_free_rdma_qvector(struct ice_pf *pf, struct msix_entry *entry);
-
-/* Structure representing auxiliary driver tailored information about the core
- * PCI dev, each auxiliary driver using the IIDC interface will have an
- * instance of this struct dedicated to it.
- */
-
-struct iidc_auxiliary_dev {
-	struct auxiliary_device adev;
-	struct ice_pf *pf;
-};
-
-/* structure representing the auxiliary driver. This struct is to be
- * allocated and populated by the auxiliary driver's owner. The core PCI
- * driver will access these ops by performing a container_of on the
- * auxiliary_device->dev.driver.
- */
-struct iidc_auxiliary_drv {
-	struct auxiliary_driver adrv;
-	/* This event_handler is meant to be a blocking call.  For instance,
-	 * when a BEFORE_MTU_CHANGE event comes in, the event_handler will not
-	 * return until the auxiliary driver is ready for the MTU change to
-	 * happen.
-	 */
-	void (*event_handler)(struct ice_pf *pf, struct iidc_event *event);
-};
-
-#endif /* _IIDC_H_*/
diff --git a/include/linux/net/intel/iidc_rdma.h b/include/linux/net/intel/iidc_rdma.h
new file mode 100644
index 000000000000..8baad1082042
--- /dev/null
+++ b/include/linux/net/intel/iidc_rdma.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021-2025, Intel Corporation. */
+
+#ifndef _IIDC_RDMA_H_
+#define _IIDC_RDMA_H_
+
+#include <linux/auxiliary_bus.h>
+#include <linux/device.h>
+#include <linux/if_ether.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <net/dscp.h>
+
+enum iidc_rdma_event_type {
+	IIDC_RDMA_EVENT_BEFORE_MTU_CHANGE,
+	IIDC_RDMA_EVENT_AFTER_MTU_CHANGE,
+	IIDC_RDMA_EVENT_BEFORE_TC_CHANGE,
+	IIDC_RDMA_EVENT_AFTER_TC_CHANGE,
+	IIDC_RDMA_EVENT_WARN_RESET,
+	IIDC_RDMA_EVENT_CRIT_ERR,
+	IIDC_RDMA_EVENT_NBITS		/* must be last */
+};
+
+struct iidc_rdma_event {
+	DECLARE_BITMAP(type, IIDC_RDMA_EVENT_NBITS);
+	u32 reg;
+};
+
+enum iidc_rdma_reset_type {
+	IIDC_FUNC_RESET,
+	IIDC_DEV_RESET,
+};
+
+enum iidc_rdma_protocol {
+	IIDC_RDMA_PROTOCOL_IWARP = BIT(0),
+	IIDC_RDMA_PROTOCOL_ROCEV2 = BIT(1),
+};
+
+/* Structure to be populated by core LAN PCI driver */
+struct iidc_rdma_core_dev_info {
+	struct pci_dev *pdev; /* PCI device of corresponding to main function */
+	struct auxiliary_device *adev;
+	/* Current active RDMA protocol */
+	enum iidc_rdma_protocol rdma_protocol;
+	void *iidc_priv; /* elements unique to each driver */
+};
+
+/* Structure representing auxiliary driver tailored information about the core
+ * PCI dev, each auxiliary driver using the IIDC interface will have an
+ * instance of this struct dedicated to it.
+ */
+struct iidc_rdma_core_auxiliary_dev {
+	struct auxiliary_device adev;
+	struct iidc_rdma_core_dev_info *cdev_info;
+};
+
+/* structure representing the auxiliary driver. This struct is to be
+ * allocated and populated by the auxiliary driver's owner. The core PCI
+ * driver will access these ops by performing a container_of on the
+ * auxiliary_device->dev.driver.
+ */
+struct iidc_rdma_core_auxiliary_drv {
+	struct auxiliary_driver adrv;
+	void (*event_handler)(struct iidc_rdma_core_dev_info *cdev,
+			      struct iidc_rdma_event *event);
+};
+
+#endif /* _IIDC_RDMA_H_*/
diff --git a/include/linux/net/intel/iidc_rdma_ice.h b/include/linux/net/intel/iidc_rdma_ice.h
new file mode 100644
index 000000000000..b40eed0e13fe
--- /dev/null
+++ b/include/linux/net/intel/iidc_rdma_ice.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021-2025, Intel Corporation. */
+
+#ifndef _IIDC_RDMA_ICE_H_
+#define _IIDC_RDMA_ICE_H_
+
+#include <linux/dcbnl.h>
+
+#define IIDC_MAX_USER_PRIORITY         8
+#define IIDC_DSCP_PFC_MODE             0x1
+
+/**
+ * struct iidc_rdma_qset_params - Struct to hold per RDMA Qset info
+ * @teid: TEID of the Qset node
+ * @qs_handle: SW index of the Qset, RDMA provides this
+ * @vport_id: VSI index
+ * @tc: Traffic Class branch the QSet should belong to
+ */
+struct iidc_rdma_qset_params {
+	/* Qset TEID returned to the RDMA driver in
+	 * ice_add_rdma_qset and used by RDMA driver
+	 * for calls to ice_del_rdma_qset
+	 */
+	u32 teid;
+	u16 qs_handle;
+	u16 vport_id;
+	u8 tc;
+};
+
+struct iidc_rdma_qos_info {
+	u64 tc_ctx;
+	u8 rel_bw;
+	u8 prio_type;
+	u8 egress_virt_up;
+	u8 ingress_virt_up;
+};
+
+/* Struct to pass QoS info */
+struct iidc_rdma_qos_params {
+	struct iidc_rdma_qos_info tc_info[IEEE_8021QAZ_MAX_TCS];
+	u8 up2tc[IIDC_MAX_USER_PRIORITY];
+	u8 vport_relative_bw;
+	u8 vport_priority_type;
+	u8 num_tc;
+	u8 pfc_mode;
+	u8 dscp_map[DSCP_MAX];
+};
+
+struct iidc_rdma_priv_dev_info {
+	u8 pf_id;
+	u16 vport_id;
+	struct net_device *netdev;
+	struct iidc_rdma_qos_params qos_info;
+	u8 __iomem *hw_addr;
+};
+
+int ice_add_rdma_qset(struct iidc_rdma_core_dev_info *cdev,
+		      struct iidc_rdma_qset_params *qset);
+int ice_del_rdma_qset(struct iidc_rdma_core_dev_info *cdev,
+		      struct iidc_rdma_qset_params *qset);
+int ice_rdma_request_reset(struct iidc_rdma_core_dev_info *cdev,
+			   enum iidc_rdma_reset_type reset_type);
+int ice_rdma_update_vsi_filter(struct iidc_rdma_core_dev_info *cdev, u16 vsi_id,
+			       bool enable);
+int ice_alloc_rdma_qvector(struct iidc_rdma_core_dev_info *cdev,
+			   struct msix_entry *entry);
+void ice_free_rdma_qvector(struct iidc_rdma_core_dev_info *cdev,
+			   struct msix_entry *entry);
+
+#endif /* _IIDC_RDMA_ICE_H_*/