iidc/ice/irdma: Update IDC to support multiple consumers

JIRA: https://issues.redhat.com/browse/RHEL-129902

commit c24a65b
Author: Dave Ertman <david.m.ertman@intel.com>
Date:   Tue Apr 15 21:15:49 2025 -0500

    iidc/ice/irdma: Update IDC to support multiple consumers

    In preparation of supporting more than a single core PCI driver
    for RDMA, move ice specific structs like qset_params, qos_info
    and qos_params from iidc_rdma.h to iidc_rdma_ice.h.

    Previously, the ice driver was just exporting its entire PF struct
    to the auxiliary driver, but since each core driver will have its own
    different PF struct, implement a universal struct that all core drivers
    can provide to the auxiliary driver through the probe call.

    Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
    Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
    Co-developed-by: Mustafa Ismail <mustafa.ismail@intel.com>
    Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
    Co-developed-by: Shiraz Saleem <shiraz.saleem@intel.com>
    Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
    Co-developed-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
    Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
    Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

(cherry picked from commit c24a65b)
Assisted-by: Patchpal
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>

Author: michich

drivers/infiniband/hw/irdma/main.c

@@ -1,10 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
 /* Copyright (c) 2015 - 2021 Intel Corporation */
 #include "main.h"
-#include "../../../net/ethernet/intel/ice/ice.h"
 
 MODULE_ALIAS("i40iw");
-MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
 MODULE_DESCRIPTION("Intel(R) Ethernet Protocol Driver for RDMA");
 MODULE_LICENSE("Dual BSD/GPL");
 
@@ -85,9 +83,10 @@ static void irdma_fill_qos_info(struct irdma_l2params *l2params,
 	}
 }
 
-static void irdma_iidc_event_handler(struct ice_pf *pf, struct iidc_rdma_event *event)
+static void irdma_iidc_event_handler(struct iidc_rdma_core_dev_info *cdev_info,
+				     struct iidc_rdma_event *event)
 {
-	struct irdma_device *iwdev = dev_get_drvdata(&pf->adev->dev);
+	struct irdma_device *iwdev = dev_get_drvdata(&cdev_info->adev->dev);
 	struct irdma_l2params l2params = {};
 
 	if (*event->type & BIT(IIDC_RDMA_EVENT_AFTER_MTU_CHANGE)) {
@@ -104,17 +103,18 @@ static void irdma_iidc_event_handler(struct ice_pf *pf, struct iidc_rdma_event *
 
 		irdma_prep_tc_change(iwdev);
 	} else if (*event->type & BIT(IIDC_RDMA_EVENT_AFTER_TC_CHANGE)) {
-		struct iidc_rdma_qos_params qos_info = {};
+		struct iidc_rdma_priv_dev_info *iidc_priv = cdev_info->iidc_priv;
 
 		if (!iwdev->vsi.tc_change_pending)
 			return;
 
 		l2params.tc_changed = true;
 		ibdev_dbg(&iwdev->ibdev, "CLNT: TC Change\n");
-		ice_get_qos_params(pf, &qos_info);
-		irdma_fill_qos_info(&l2params, &qos_info);
+
+		irdma_fill_qos_info(&l2params, &iidc_priv->qos_info);
 		if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
-			iwdev->dcb_vlan_mode = qos_info.num_tc > 1 && !l2params.dscp_mode;
+			iwdev->dcb_vlan_mode =
+				l2params.num_tc > 1 && !l2params.dscp_mode;
 		irdma_change_l2params(&iwdev->vsi, &l2params);
 	} else if (*event->type & BIT(IIDC_RDMA_EVENT_CRIT_ERR)) {
 		ibdev_warn(&iwdev->ibdev, "ICE OICR event notification: oicr = 0x%08x\n",
@@ -151,10 +151,8 @@ static void irdma_iidc_event_handler(struct ice_pf *pf, struct iidc_rdma_event *
  */
 static void irdma_request_reset(struct irdma_pci_f *rf)
 {
-	struct ice_pf *pf = rf->cdev;
-
 	ibdev_warn(&rf->iwdev->ibdev, "Requesting a reset\n");
-	ice_rdma_request_reset(pf, IIDC_PFR);
+	ice_rdma_request_reset(rf->cdev, IIDC_FUNC_RESET);
 }
 
 /**
@@ -166,14 +164,15 @@ static int irdma_lan_register_qset(struct irdma_sc_vsi *vsi,
 				   struct irdma_ws_node *tc_node)
 {
 	struct irdma_device *iwdev = vsi->back_vsi;
-	struct ice_pf *pf = iwdev->rf->cdev;
+	struct iidc_rdma_core_dev_info *cdev_info;
 	struct iidc_rdma_qset_params qset = {};
 	int ret;
 
+	cdev_info = iwdev->rf->cdev;
 	qset.qs_handle = tc_node->qs_handle;
 	qset.tc = tc_node->traffic_class;
 	qset.vport_id = vsi->vsi_idx;
-	ret = ice_add_rdma_qset(pf, &qset);
+	ret = ice_add_rdma_qset(cdev_info, &qset);
 	if (ret) {
 		ibdev_dbg(&iwdev->ibdev, "WS: LAN alloc_res for rdma qset failed.\n");
 		return ret;
@@ -194,19 +193,20 @@ static void irdma_lan_unregister_qset(struct irdma_sc_vsi *vsi,
 				      struct irdma_ws_node *tc_node)
 {
 	struct irdma_device *iwdev = vsi->back_vsi;
-	struct ice_pf *pf = iwdev->rf->cdev;
+	struct iidc_rdma_core_dev_info *cdev_info;
 	struct iidc_rdma_qset_params qset = {};
 
+	cdev_info = iwdev->rf->cdev;
 	qset.qs_handle = tc_node->qs_handle;
 	qset.tc = tc_node->traffic_class;
 	qset.vport_id = vsi->vsi_idx;
 	qset.teid = tc_node->l2_sched_node_id;
 
-	if (ice_del_rdma_qset(pf, &qset))
+	if (ice_del_rdma_qset(cdev_info, &qset))
 		ibdev_dbg(&iwdev->ibdev, "WS: LAN free_res for rdma qset failed.\n");
 }
 
-static int irdma_init_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
+static int irdma_init_interrupts(struct irdma_pci_f *rf, struct iidc_rdma_core_dev_info *cdev)
 {
 	int i;
 
@@ -217,12 +217,12 @@ static int irdma_init_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
 		return -ENOMEM;
 
 	for (i = 0; i < rf->msix_count; i++)
-		if (ice_alloc_rdma_qvector(pf, &rf->msix_entries[i]))
+		if (ice_alloc_rdma_qvector(cdev, &rf->msix_entries[i]))
 			break;
 
 	if (i < IRDMA_MIN_MSIX) {
 		for (; i > 0; i--)
-			ice_free_rdma_qvector(pf, &rf->msix_entries[i]);
+			ice_free_rdma_qvector(cdev, &rf->msix_entries[i]);
 
 		kfree(rf->msix_entries);
 		return -ENOMEM;
@@ -233,12 +233,12 @@ static int irdma_init_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
 	return 0;
 }
 
-static void irdma_deinit_interrupts(struct irdma_pci_f *rf, struct ice_pf *pf)
+static void irdma_deinit_interrupts(struct irdma_pci_f *rf, struct iidc_rdma_core_dev_info *cdev)
 {
 	int i;
 
 	for (i = 0; i < rf->msix_count; i++)
-		ice_free_rdma_qvector(pf, &rf->msix_entries[i]);
+		ice_free_rdma_qvector(cdev, &rf->msix_entries[i]);
 
 	kfree(rf->msix_entries);
 }
@@ -247,43 +247,51 @@ static void irdma_remove(struct auxiliary_device *aux_dev)
 {
 	struct irdma_device *iwdev = auxiliary_get_drvdata(aux_dev);
 	struct iidc_rdma_core_auxiliary_dev *iidc_adev;
-	struct ice_pf *pf;
+	struct iidc_rdma_core_dev_info *cdev_info;
 
 	iidc_adev = container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
-	pf = iidc_adev->pf;
+	cdev_info = iidc_adev->cdev_info;
 
+	ice_rdma_update_vsi_filter(cdev_info, iwdev->vsi_num, false);
 	irdma_ib_unregister_device(iwdev);
-	ice_rdma_update_vsi_filter(pf, iwdev->vsi_num, false);
-	irdma_deinit_interrupts(iwdev->rf, pf);
+	irdma_deinit_interrupts(iwdev->rf, cdev_info);
 
 	kfree(iwdev->rf);
 
-	pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(pf->pdev->devfn));
+	pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(cdev_info->pdev->devfn));
 }
 
-static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf,
-				   struct ice_vsi *vsi)
+static void irdma_fill_device_info(struct irdma_device *iwdev,
+				   struct iidc_rdma_core_dev_info *cdev_info)
 {
+	struct iidc_rdma_priv_dev_info *iidc_priv = cdev_info->iidc_priv;
 	struct irdma_pci_f *rf = iwdev->rf;
 
-	rf->cdev = pf;
+	rf->sc_dev.hw = &rf->hw;
+	rf->iwdev = iwdev;
+	rf->cdev = cdev_info;
+	rf->hw.hw_addr = iidc_priv->hw_addr;
+	rf->pcidev = cdev_info->pdev;
+	rf->hw.device = &rf->pcidev->dev;
+	rf->pf_id = iidc_priv->pf_id;
 	rf->gen_ops.register_qset = irdma_lan_register_qset;
 	rf->gen_ops.unregister_qset = irdma_lan_unregister_qset;
-	rf->hw.hw_addr = pf->hw.hw_addr;
-	rf->pcidev = pf->pdev;
-	rf->pf_id = pf->hw.pf_id;
-	rf->default_vsi.vsi_idx = vsi->vsi_num;
-	rf->protocol_used = pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2 ?
-			    IRDMA_ROCE_PROTOCOL_ONLY : IRDMA_IWARP_PROTOCOL_ONLY;
+
+	rf->default_vsi.vsi_idx = iidc_priv->vport_id;
+	rf->protocol_used =
+		cdev_info->rdma_protocol == IIDC_RDMA_PROTOCOL_ROCEV2 ?
+		IRDMA_ROCE_PROTOCOL_ONLY : IRDMA_IWARP_PROTOCOL_ONLY;
 	rf->rdma_ver = IRDMA_GEN_2;
 	rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT;
 	rf->rst_to = IRDMA_RST_TIMEOUT_HZ;
 	rf->gen_ops.request_reset = irdma_request_reset;
 	rf->limits_sel = 7;
 	rf->iwdev = iwdev;
+
 	mutex_init(&iwdev->ah_tbl_lock);
-	iwdev->netdev = vsi->netdev;
-	iwdev->vsi_num = vsi->vsi_num;
+
+	iwdev->netdev = iidc_priv->netdev;
+	iwdev->vsi_num = iidc_priv->vport_id;
 	iwdev->init_state = INITIAL_STATE;
 	iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT;
 	iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT;
@@ -296,20 +304,17 @@ static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf
 static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
 {
 	struct iidc_rdma_core_auxiliary_dev *iidc_adev;
-	struct iidc_rdma_qos_params qos_info = {};
+	struct iidc_rdma_core_dev_info *cdev_info;
+	struct iidc_rdma_priv_dev_info *iidc_priv;
 	struct irdma_l2params l2params = {};
 	struct irdma_device *iwdev;
 	struct irdma_pci_f *rf;
-	struct ice_vsi *vsi;
-	struct ice_pf *pf;
 	int err;
 
 	iidc_adev = container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
-	pf = iidc_adev->pf;
-	vsi = ice_get_main_vsi(pf);
+	cdev_info = iidc_adev->cdev_info;
+	iidc_priv = cdev_info->iidc_priv;
 
-	if (!vsi)
-		return -EIO;
 	iwdev = ib_alloc_device(irdma_device, ibdev);
 	if (!iwdev)
 		return -ENOMEM;
@@ -319,10 +324,10 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
 		return -ENOMEM;
 	}
 
-	irdma_fill_device_info(iwdev, pf, vsi);
+	irdma_fill_device_info(iwdev, cdev_info);
 	rf = iwdev->rf;
 
-	err = irdma_init_interrupts(rf, pf);
+	err = irdma_init_interrupts(rf, cdev_info);
 	if (err)
 		goto err_init_interrupts;
 
@@ -331,8 +336,7 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
 		goto err_ctrl_init;
 
 	l2params.mtu = iwdev->netdev->mtu;
-	ice_get_qos_params(pf, &qos_info);
-	irdma_fill_qos_info(&l2params, &qos_info);
+	irdma_fill_qos_info(&l2params, &iidc_priv->qos_info);
 	if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
 		iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode;
 
@@ -344,7 +348,7 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
 	if (err)
 		goto err_ibreg;
 
-	ice_rdma_update_vsi_filter(pf, iwdev->vsi_num, true);
+	ice_rdma_update_vsi_filter(cdev_info, iwdev->vsi_num, true);
 
 	ibdev_dbg(&iwdev->ibdev, "INIT: Gen2 PF[%d] device probe success\n", PCI_FUNC(rf->pcidev->devfn));
 	auxiliary_set_drvdata(aux_dev, iwdev);
@@ -356,7 +360,7 @@ static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_
 err_rt_init:
 	irdma_ctrl_deinit_hw(rf);
 err_ctrl_init:
-	irdma_deinit_interrupts(rf, pf);
+	irdma_deinit_interrupts(rf, cdev_info);
 err_init_interrupts:
 	kfree(iwdev->rf);
 	ib_dealloc_device(&iwdev->ibdev);

drivers/infiniband/hw/irdma/main.h

@@ -30,6 +30,7 @@
 #endif
 #include <linux/auxiliary_bus.h>
 #include <linux/net/intel/iidc_rdma.h>
+#include <linux/net/intel/iidc_rdma_ice.h>
 #include <crypto/hash.h>
 #include <rdma/ib_smi.h>
 #include <rdma/ib_verbs.h>

drivers/net/ethernet/intel/ice/devlink/devlink.c

@@ -1339,8 +1339,13 @@ ice_devlink_enable_roce_get(struct devlink *devlink, u32 id,
 			    struct devlink_param_gset_ctx *ctx)
 {
 	struct ice_pf *pf = devlink_priv(devlink);
+	struct iidc_rdma_core_dev_info *cdev;
 
-	ctx->val.vbool = pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2 ? true : false;
+	cdev = pf->cdev_info;
+	if (!cdev)
+		return -ENODEV;
+
+	ctx->val.vbool = !!(cdev->rdma_protocol & IIDC_RDMA_PROTOCOL_ROCEV2);
 
 	return 0;
 }
@@ -1350,19 +1355,24 @@ static int ice_devlink_enable_roce_set(struct devlink *devlink, u32 id,
 				       struct netlink_ext_ack *extack)
 {
 	struct ice_pf *pf = devlink_priv(devlink);
+	struct iidc_rdma_core_dev_info *cdev;
 	bool roce_ena = ctx->val.vbool;
 	int ret;
 
+	cdev = pf->cdev_info;
+	if (!cdev)
+		return -ENODEV;
+
 	if (!roce_ena) {
 		ice_unplug_aux_dev(pf);
-		pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
+		cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
 		return 0;
 	}
 
-	pf->rdma_mode |= IIDC_RDMA_PROTOCOL_ROCEV2;
+	cdev->rdma_protocol |= IIDC_RDMA_PROTOCOL_ROCEV2;
 	ret = ice_plug_aux_dev(pf);
 	if (ret)
-		pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
+		cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
 
 	return ret;
 }
@@ -1373,11 +1383,16 @@ ice_devlink_enable_roce_validate(struct devlink *devlink, u32 id,
 				 struct netlink_ext_ack *extack)
 {
 	struct ice_pf *pf = devlink_priv(devlink);
+	struct iidc_rdma_core_dev_info *cdev;
+
+	cdev = pf->cdev_info;
+	if (!cdev)
+		return -ENODEV;
 
 	if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
 		return -EOPNOTSUPP;
 
-	if (pf->rdma_mode & IIDC_RDMA_PROTOCOL_IWARP) {
+	if (cdev->rdma_protocol & IIDC_RDMA_PROTOCOL_IWARP) {
 		NL_SET_ERR_MSG_MOD(extack, "iWARP is currently enabled. This device cannot enable iWARP and RoCEv2 simultaneously");
 		return -EOPNOTSUPP;
 	}
@@ -1390,8 +1405,13 @@ ice_devlink_enable_iw_get(struct devlink *devlink, u32 id,
 			  struct devlink_param_gset_ctx *ctx)
 {
 	struct ice_pf *pf = devlink_priv(devlink);
+	struct iidc_rdma_core_dev_info *cdev;
 
-	ctx->val.vbool = pf->rdma_mode & IIDC_RDMA_PROTOCOL_IWARP;
+	cdev = pf->cdev_info;
+	if (!cdev)
+		return -ENODEV;
+
+	ctx->val.vbool = !!(cdev->rdma_protocol & IIDC_RDMA_PROTOCOL_IWARP);
 
 	return 0;
 }
@@ -1401,19 +1421,24 @@ static int ice_devlink_enable_iw_set(struct devlink *devlink, u32 id,
 				     struct netlink_ext_ack *extack)
 {
 	struct ice_pf *pf = devlink_priv(devlink);
+	struct iidc_rdma_core_dev_info *cdev;
 	bool iw_ena = ctx->val.vbool;
 	int ret;
 
+	cdev = pf->cdev_info;
+	if (!cdev)
+		return -ENODEV;
+
 	if (!iw_ena) {
 		ice_unplug_aux_dev(pf);
-		pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_IWARP;
+		cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_IWARP;
 		return 0;
 	}
 
-	pf->rdma_mode |= IIDC_RDMA_PROTOCOL_IWARP;
+	cdev->rdma_protocol |= IIDC_RDMA_PROTOCOL_IWARP;
 	ret = ice_plug_aux_dev(pf);
 	if (ret)
-		pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_IWARP;
+		cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_IWARP;
 
 	return ret;
 }
@@ -1428,7 +1453,7 @@ ice_devlink_enable_iw_validate(struct devlink *devlink, u32 id,
 	if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
 		return -EOPNOTSUPP;
 
-	if (pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2) {
+	if (pf->cdev_info->rdma_protocol & IIDC_RDMA_PROTOCOL_ROCEV2) {
 		NL_SET_ERR_MSG_MOD(extack, "RoCEv2 is currently enabled. This device cannot enable iWARP and RoCEv2 simultaneously");
 		return -EOPNOTSUPP;
 	}