[PATCH v2 2/7] staging: qlge: Initialize devlink health dump framework
From: Coiby Xu
Date: Wed Oct 14 2020 - 06:43:45 EST
Initialize devlink health dump framework for the qlge driver so the
coredump could be done via devlink.
struct qlge_adapter is now used as the private data struct of
struct devlink so it could exist independently of struct net_device
and devlink reload could be supported in the future.
Signed-off-by: Coiby Xu <coiby.xu@xxxxxxxxx>
---
drivers/staging/qlge/Kconfig | 1 +
drivers/staging/qlge/Makefile | 2 +-
drivers/staging/qlge/qlge.h | 5 +++
drivers/staging/qlge/qlge_devlink.c | 31 +++++++++++++++++++
drivers/staging/qlge/qlge_devlink.h | 9 ++++++
drivers/staging/qlge/qlge_main.c | 48 +++++++++++++++++++++--------
6 files changed, 82 insertions(+), 14 deletions(-)
create mode 100644 drivers/staging/qlge/qlge_devlink.c
create mode 100644 drivers/staging/qlge/qlge_devlink.h
diff --git a/drivers/staging/qlge/Kconfig b/drivers/staging/qlge/Kconfig
index a3cb25a3ab80..6d831ed67965 100644
--- a/drivers/staging/qlge/Kconfig
+++ b/drivers/staging/qlge/Kconfig
@@ -3,6 +3,7 @@
config QLGE
tristate "QLogic QLGE 10Gb Ethernet Driver Support"
depends on ETHERNET && PCI
+ select NET_DEVLINK
help
This driver supports QLogic ISP8XXX 10Gb Ethernet cards.
diff --git a/drivers/staging/qlge/Makefile b/drivers/staging/qlge/Makefile
index 1dc2568e820c..07c1898a512e 100644
--- a/drivers/staging/qlge/Makefile
+++ b/drivers/staging/qlge/Makefile
@@ -5,4 +5,4 @@
obj-$(CONFIG_QLGE) += qlge.o
-qlge-objs := qlge_main.o qlge_dbg.o qlge_mpi.o qlge_ethtool.o
+qlge-objs := qlge_main.o qlge_dbg.o qlge_mpi.o qlge_ethtool.o qlge_devlink.o
diff --git a/drivers/staging/qlge/qlge.h b/drivers/staging/qlge/qlge.h
index 6ee83e7efd7c..4a48bcc88fbd 100644
--- a/drivers/staging/qlge/qlge.h
+++ b/drivers/staging/qlge/qlge.h
@@ -2060,6 +2060,10 @@ struct nic_operations {
int (*port_initialize)(struct qlge_adapter *qdev);
};
+struct qlge_netdev_priv {
+ struct ql_adapter *qdev;
+};
+
/*
* The main Adapter structure definition.
* This structure has all fields relevant to the hardware.
@@ -2077,6 +2081,7 @@ struct qlge_adapter {
struct pci_dev *pdev;
struct net_device *ndev; /* Parent NET device */
+ struct devlink_health_reporter *reporter;
/* Hardware information */
u32 chip_rev_id;
u32 fw_rev_id;
diff --git a/drivers/staging/qlge/qlge_devlink.c b/drivers/staging/qlge/qlge_devlink.c
new file mode 100644
index 000000000000..d9c71f45211f
--- /dev/null
+++ b/drivers/staging/qlge/qlge_devlink.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "qlge.h"
+#include "qlge_devlink.h"
+
+static int
+qlge_reporter_coredump(struct devlink_health_reporter *reporter,
+ struct devlink_fmsg *fmsg, void *priv_ctx,
+ struct netlink_ext_ack *extack)
+{
+ return 0;
+}
+
+static const struct devlink_health_reporter_ops qlge_reporter_ops = {
+ .name = "dummy",
+ .dump = qlge_reporter_coredump,
+};
+
+void qlge_health_create_reporters(struct qlge_adapter *priv)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink *devlink;
+
+ devlink = priv_to_devlink(priv);
+ priv->reporter =
+ devlink_health_reporter_create(devlink, &qlge_reporter_ops,
+ 0, priv);
+ if (IS_ERR(priv->reporter))
+ netdev_warn(priv->ndev,
+ "Failed to create reporter, err = %ld\n",
+ PTR_ERR(reporter));
+}
diff --git a/drivers/staging/qlge/qlge_devlink.h b/drivers/staging/qlge/qlge_devlink.h
new file mode 100644
index 000000000000..19078e1ac694
--- /dev/null
+++ b/drivers/staging/qlge/qlge_devlink.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef QLGE_DEVLINK_H
+#define QLGE_DEVLINK_H
+
+#include <net/devlink.h>
+
+void qlge_health_create_reporters(struct qlge_adapter *priv);
+
+#endif /* QLGE_DEVLINK_H */
diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
index 19e72279b0ce..7a4bae3c12d0 100644
--- a/drivers/staging/qlge/qlge_main.c
+++ b/drivers/staging/qlge/qlge_main.c
@@ -42,6 +42,7 @@
#include <net/ip6_checksum.h>
#include "qlge.h"
+#include "qlge_devlink.h"
char qlge_driver_name[] = DRV_NAME;
const char qlge_driver_version[] = DRV_VERSION;
@@ -4382,10 +4383,10 @@ static void qlge_release_all(struct pci_dev *pdev)
pci_release_regions(pdev);
}
-static int qlge_init_device(struct pci_dev *pdev, struct net_device *ndev,
+static int qlge_init_device(struct pci_dev *pdev, struct qlge_adapter *qdev,
int cards_found)
{
- struct qlge_adapter *qdev = netdev_priv(ndev);
+ struct net_device *ndev = qdev->ndev;
int err = 0;
memset((void *)qdev, 0, sizeof(*qdev));
@@ -4548,27 +4549,34 @@ static void qlge_timer(struct timer_list *t)
mod_timer(&qdev->timer, jiffies + (5 * HZ));
}
+static const struct devlink_ops qlge_devlink_ops;
+
static int qlge_probe(struct pci_dev *pdev,
const struct pci_device_id *pci_entry)
{
struct net_device *ndev = NULL;
struct qlge_adapter *qdev = NULL;
+ struct devlink *devlink;
static int cards_found;
int err = 0;
- ndev = alloc_etherdev_mq(sizeof(struct qlge_adapter),
+ devlink = devlink_alloc(&qlge_devlink_ops, sizeof(struct qlge_adapter));
+ if (!devlink)
+ return -ENOMEM;
+
+ qdev = devlink_priv(devlink);
+
+ ndev = alloc_etherdev_mq(sizeof(struct qlge_netdev_priv),
min(MAX_CPUS,
netif_get_num_default_rss_queues()));
if (!ndev)
- return -ENOMEM;
+ goto devlink_free;
- err = qlge_init_device(pdev, ndev, cards_found);
- if (err < 0) {
- free_netdev(ndev);
- return err;
- }
+ qdev->ndev = ndev;
+ err = qlge_init_device(pdev, qdev, cards_found);
+ if (err < 0)
+ goto devlink_free;
- qdev = netdev_priv(ndev);
SET_NETDEV_DEV(ndev, &pdev->dev);
ndev->hw_features = NETIF_F_SG |
NETIF_F_IP_CSUM |
@@ -4611,8 +4619,14 @@ static int qlge_probe(struct pci_dev *pdev,
qlge_release_all(pdev);
pci_disable_device(pdev);
free_netdev(ndev);
- return err;
+ goto devlink_free;
}
+
+ err = devlink_register(devlink, &pdev->dev);
+ if (err)
+ goto devlink_free;
+
+ qlge_health_create_reporters(qdev);
/* Start up the timer to trigger EEH if
* the bus goes dead
*/
@@ -4623,6 +4637,10 @@ static int qlge_probe(struct pci_dev *pdev,
atomic_set(&qdev->lb_count, 0);
cards_found++;
return 0;
+
+devlink_free:
+ devlink_free(devlink);
+ return err;
}
netdev_tx_t qlge_lb_send(struct sk_buff *skb, struct net_device *ndev)
@@ -4637,14 +4655,18 @@ int qlge_clean_lb_rx_ring(struct rx_ring *rx_ring, int budget)
static void qlge_remove(struct pci_dev *pdev)
{
- struct net_device *ndev = pci_get_drvdata(pdev);
- struct qlge_adapter *qdev = netdev_priv(ndev);
+ struct qlge_adapter *qdev = pci_get_drvdata(pdev);
+ struct net_device *ndev = qdev->ndev;
+ struct devlink *devlink = priv_to_devlink(qdev);
del_timer_sync(&qdev->timer);
qlge_cancel_all_work_sync(qdev);
unregister_netdev(ndev);
qlge_release_all(pdev);
pci_disable_device(pdev);
+ devlink_health_reporter_destroy(qdev->reporter);
+ devlink_unregister(devlink);
+ devlink_free(devlink);
free_netdev(ndev);
}
--
2.28.0