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Message-Id: <20200814160601.901682-2-coiby.xu@gmail.com>
Date: Sat, 15 Aug 2020 00:05:59 +0800
From: Coiby Xu <coiby.xu@...il.com>
To: netdev@...r.kernel.org
Cc: Benjamin Poirier <benjamin.poirier@...il.com>,
linux-kernel-mentees@...ts.linuxfoundation.org,
Manish Chopra <manishc@...vell.com>,
GR-Linux-NIC-Dev@...vell.com,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Michal Kubecek <mkubecek@...e.cz>,
linux-kernel@...r.kernel.org (open list),
devel@...verdev.osuosl.org (open list:STAGING SUBSYSTEM)
Subject: [RFC 1/3] Initialize devlink health dump framework for the dlge driver
Initialize devlink health dump framework for the dlge driver so the
coredump could be done via devlink.
Signed-off-by: Coiby Xu <coiby.xu@...il.com>
---
drivers/staging/qlge/Makefile | 2 +-
drivers/staging/qlge/qlge.h | 9 +++++++
drivers/staging/qlge/qlge_health.c | 43 ++++++++++++++++++++++++++++++
drivers/staging/qlge/qlge_health.h | 2 ++
drivers/staging/qlge/qlge_main.c | 21 +++++++++++++++
5 files changed, 76 insertions(+), 1 deletion(-)
create mode 100644 drivers/staging/qlge/qlge_health.c
create mode 100644 drivers/staging/qlge/qlge_health.h
diff --git a/drivers/staging/qlge/Makefile b/drivers/staging/qlge/Makefile
index 1dc2568e820c..0a1e4c8dd546 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_health.o
diff --git a/drivers/staging/qlge/qlge.h b/drivers/staging/qlge/qlge.h
index fc8c5ca8935d..055ded6dab60 100644
--- a/drivers/staging/qlge/qlge.h
+++ b/drivers/staging/qlge/qlge.h
@@ -2061,6 +2061,14 @@ struct nic_operations {
int (*port_initialize) (struct ql_adapter *);
};
+
+
+struct qlge_devlink {
+ struct ql_adapter *qdev;
+ struct net_device *ndev;
+ struct devlink_health_reporter *reporter;
+};
+
/*
* The main Adapter structure definition.
* This structure has all fields relevant to the hardware.
@@ -2078,6 +2086,7 @@ struct ql_adapter {
struct pci_dev *pdev;
struct net_device *ndev; /* Parent NET device */
+ struct qlge_devlink *devlink;
/* Hardware information */
u32 chip_rev_id;
u32 fw_rev_id;
diff --git a/drivers/staging/qlge/qlge_health.c b/drivers/staging/qlge/qlge_health.c
new file mode 100644
index 000000000000..292f6b1827e1
--- /dev/null
+++ b/drivers/staging/qlge/qlge_health.c
@@ -0,0 +1,43 @@
+#include "qlge.h"
+#include "qlge_health.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,
+};
+
+int qlge_health_create_reporters(struct qlge_devlink *priv)
+{
+ int err;
+
+ struct devlink_health_reporter *reporter;
+ struct devlink *devlink;
+
+ devlink = priv_to_devlink(priv);
+ reporter =
+ devlink_health_reporter_create(devlink, &qlge_reporter_ops,
+ 0,
+ priv);
+ if (IS_ERR(reporter)) {
+ netdev_warn(priv->ndev,
+ "Failed to create reporter, err = %ld\n",
+ PTR_ERR(reporter));
+ return PTR_ERR(reporter);
+ }
+ priv->reporter = reporter;
+
+ if (err)
+ return err;
+
+ return 0;
+}
+
+
diff --git a/drivers/staging/qlge/qlge_health.h b/drivers/staging/qlge/qlge_health.h
new file mode 100644
index 000000000000..07d3bafab845
--- /dev/null
+++ b/drivers/staging/qlge/qlge_health.h
@@ -0,0 +1,2 @@
+#include <net/devlink.h>
+int qlge_health_create_reporters(struct qlge_devlink *priv);
diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
index 1650de13842f..b2be7f4b7dd6 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_health.h"
char qlge_driver_name[] = DRV_NAME;
const char qlge_driver_version[] = DRV_VERSION;
@@ -4550,6 +4551,8 @@ static void ql_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)
{
@@ -4557,6 +4560,13 @@ static int qlge_probe(struct pci_dev *pdev,
struct ql_adapter *qdev = NULL;
static int cards_found;
int err = 0;
+ struct devlink *devlink;
+ struct qlge_devlink *qlge_dl;
+
+ devlink = devlink_alloc(&qlge_devlink_ops, sizeof(struct qlge_devlink));
+ if (!devlink)
+ return -ENOMEM;
+ qlge_dl = devlink_priv(devlink);
ndev = alloc_etherdev_mq(sizeof(struct ql_adapter),
min(MAX_CPUS,
@@ -4615,6 +4625,15 @@ static int qlge_probe(struct pci_dev *pdev,
free_netdev(ndev);
return err;
}
+
+ err = devlink_register(devlink, &pdev->dev);
+ if (err)
+ devlink_free(devlink);
+
+ qlge_health_create_reporters(qlge_dl);
+ qlge_dl->qdev = qdev;
+ qlge_dl->ndev = ndev;
+ qdev->devlink = qlge_dl;
/* Start up the timer to trigger EEH if
* the bus goes dead
*/
@@ -4647,6 +4666,8 @@ static void qlge_remove(struct pci_dev *pdev)
unregister_netdev(ndev);
ql_release_all(pdev);
pci_disable_device(pdev);
+ devlink_unregister(priv_to_devlink(qdev->devlink));
+ devlink_health_reporter_destroy(qdev->devlink->reporter);
free_netdev(ndev);
}
--
2.27.0
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