qede: Add qedr framework

Adds a skeletal implementation of the qede RoCE driver -
The qedr has some dependencies of the state of the underlying base
interface. This adds some logic required with mutual registrations
and the ability to pass updates on 'intresting' events.

Signed-off-by: Ram Amrani <Ram.Amrani@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/Kconfig

@@ -89,12 +89,7 @@ config QED
 	  This enables the support for ...
 
 config QED_LL2
-	bool "Qlogic QED Light L2 interface"
-	default n
-	depends on QED
-	---help---
-	This enables support for Light L2 interface which is required
-	by all qed protocol drivers other than qede.
+	bool
 
 config QED_SRIOV
 	bool "QLogic QED 25/40/100Gb SR-IOV support"
@@ -112,4 +107,15 @@ config QEDE
 	---help---
 	  This enables the support for ...
 
+config INFINIBAND_QEDR
+	tristate "QLogic qede RoCE sources [debug]"
+	depends on QEDE && 64BIT
+	select QED_LL2
+	default n
+	---help---
+	  This provides a temporary node that allows the compilation
+	  and logical testing of the InfiniBand over Ethernet support
+	  for QLogic QED. This would be replaced by the 'real' option
+	  once the QEDR driver is added [+relocated].
+
 endif # NET_VENDOR_QLOGIC

drivers/net/ethernet/qlogic/qede/Makefile

@@ -2,3 +2,4 @@ obj-$(CONFIG_QEDE) := qede.o
 
 qede-y := qede_main.o qede_ethtool.o
 qede-$(CONFIG_DCB) += qede_dcbnl.o
+qede-$(CONFIG_INFINIBAND_QEDR) += qede_roce.o

drivers/net/ethernet/qlogic/qede/qede.h

@@ -106,6 +106,13 @@ struct qede_vlan {
 	bool configured;
 };
 
+struct qede_rdma_dev {
+	struct qedr_dev *qedr_dev;
+	struct list_head entry;
+	struct list_head roce_event_list;
+	struct workqueue_struct *roce_wq;
+};
+
 struct qede_dev {
 	struct qed_dev			*cdev;
 	struct net_device		*ndev;
@@ -185,6 +192,8 @@ struct qede_dev {
 	unsigned long			sp_flags;
 	u16				vxlan_dst_port;
 	u16				geneve_dst_port;
+
+	struct qede_rdma_dev		rdma_info;
 };
 
 enum QEDE_STATE {

drivers/net/ethernet/qlogic/qede/qede_main.c

@@ -36,7 +36,7 @@
 #include <linux/random.h>
 #include <net/ip6_checksum.h>
 #include <linux/bitops.h>
-
+#include <linux/qed/qede_roce.h>
 #include "qede.h"
 
 static char version[] =
@@ -193,8 +193,7 @@ static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 	struct ethtool_drvinfo drvinfo;
 	struct qede_dev *edev;
 
-	/* Currently only support name change */
-	if (event != NETDEV_CHANGENAME)
+	if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 		goto done;
 
 	/* Check whether this is a qede device */
@@ -207,11 +206,18 @@ static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 		goto done;
 	edev = netdev_priv(ndev);
 
-	/* Notify qed of the name change */
-	if (!edev->ops || !edev->ops->common)
-		goto done;
-	edev->ops->common->set_id(edev->cdev, edev->ndev->name,
-				  "qede");
+	switch (event) {
+	case NETDEV_CHANGENAME:
+		/* Notify qed of the name change */
+		if (!edev->ops || !edev->ops->common)
+			goto done;
+		edev->ops->common->set_id(edev->cdev, edev->ndev->name, "qede");
+		break;
+	case NETDEV_CHANGEADDR:
+		edev = netdev_priv(ndev);
+		qede_roce_event_changeaddr(edev);
+		break;
+	}
 
 done:
 	return NOTIFY_DONE;
@@ -2545,10 +2551,14 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 
 	qede_init_ndev(edev);
 
+	rc = qede_roce_dev_add(edev);
+	if (rc)
+		goto err3;
+
 	rc = register_netdev(edev->ndev);
 	if (rc) {
 		DP_NOTICE(edev, "Cannot register net-device\n");
-		goto err3;
+		goto err4;
 	}
 
 	edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
@@ -2568,6 +2578,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 
 	return 0;
 
+err4:
+	qede_roce_dev_remove(edev);
 err3:
 	free_netdev(edev->ndev);
 err2:
@@ -2614,8 +2626,11 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
 	DP_INFO(edev, "Starting qede_remove\n");
 
 	cancel_delayed_work_sync(&edev->sp_task);
+
 	unregister_netdev(ndev);
 
+	qede_roce_dev_remove(edev);
+
 	edev->ops->common->set_power_state(cdev, PCI_D0);
 
 	pci_set_drvdata(pdev, NULL);
@@ -3512,6 +3527,7 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
 
 	DP_INFO(edev, "Starting qede unload\n");
 
+	qede_roce_dev_event_close(edev);
 	mutex_lock(&edev->qede_lock);
 	edev->state = QEDE_STATE_CLOSED;
 
@@ -3612,6 +3628,7 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
 	/* Query whether link is already-up */
 	memset(&link_output, 0, sizeof(link_output));
 	edev->ops->common->get_link(edev->cdev, &link_output);
+	qede_roce_dev_event_open(edev);
 	qede_link_update(edev, &link_output);
 
 	DP_INFO(edev, "Ending successfully qede load\n");