Initialize devlink health dump framework for the dlge driver so the
coredump could be done via devlink.
Signed-off-by: Coiby Xu <[email protected]>
---
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
On 2020-08-15 00:05 +0800, Coiby Xu wrote:
> Initialize devlink health dump framework for the dlge driver so the
> coredump could be done via devlink.
>
> Signed-off-by: Coiby Xu <[email protected]>
> ---
> 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 *);
> };
>
This patch doesn't apply over the latest staging tree. I think your tree
is missing commit d923bb6bf508 ("staging: qlge: qlge.h: Function
definition arguments should have names.")
> +
> +
> +struct qlge_devlink {
> + struct ql_adapter *qdev;
> + struct net_device *ndev;
I don't have experience implementing devlink callbacks but looking at
some other devlink users (mlx4, ionic, ice), all of them use devlink
priv space for their main private structure. That would be struct
ql_adapter in this case. Is there a good reason to stray from that
pattern?
> + 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,
> +};
I think
select NET_DEVLINK
should be added to drivers/staging/qlge/Kconfig
> +
> +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;
> +}
> +
> +
Stray newlines
> 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);
I would suggest to put this in qlge.h instead of creating a new file.
> 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);
Are you sure it's safe to continue devlink init after an error here?
Again, that does not resemble usage of devlink in other drivers (ex.
bnxt).
> +
> + 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);
Isn't the order of those two calls mixed up?
> free_netdev(ndev);
> }
>
> --
> 2.27.0
>
On Sun, Aug 16, 2020 at 11:56:40AM +0900, Benjamin Poirier wrote:
>On 2020-08-15 00:05 +0800, Coiby Xu wrote:
>> Initialize devlink health dump framework for the dlge driver so the
>> coredump could be done via devlink.
>>
>> Signed-off-by: Coiby Xu <[email protected]>
>> ---
>> 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 *);
>> };
>>
>
>This patch doesn't apply over the latest staging tree. I think your tree
>is missing commit d923bb6bf508 ("staging: qlge: qlge.h: Function
>definition arguments should have names.")
Thank you for applying the patch to test it! I had incorrect
understanding about the word "RFC" and didn't do a rebase onto
the latest staging tree.
>
>> +
>> +
>> +struct qlge_devlink {
>> + struct ql_adapter *qdev;
>> + struct net_device *ndev;
>
>I don't have experience implementing devlink callbacks but looking at
>some other devlink users (mlx4, ionic, ice), all of them use devlink
>priv space for their main private structure. That would be struct
>ql_adapter in this case. Is there a good reason to stray from that
>pattern?
>
>> + 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,
>> +};
>
>I think
> select NET_DEVLINK
>should be added to drivers/staging/qlge/Kconfig
Thank you for reminding me!
>
>> +
>> +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;
>> +}
>> +
>> +
>
>Stray newlines
Will fix it in v1.
>
>> 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);
>
>I would suggest to put this in qlge.h instead of creating a new file.
Although there are only two lines for now, is it possible qlge will add
more devlink code? If that's the case, a file to single out these code
is necessary as is the same to some other drivers,
$ find drivers -name *health*.h
drivers/net/ethernet/mellanox/mlx5/core/en/health.h
$ find drivers -name *devlink*.h
drivers/net/ethernet/huawei/hinic/hinic_devlink.h
drivers/net/ethernet/mellanox/mlx5/core/devlink.h
drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
drivers/net/ethernet/intel/ice/ice_devlink.h
drivers/net/ethernet/pensando/ionic/ionic_devlink.h
drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
>
>> 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);
>
>Are you sure it's safe to continue devlink init after an error here?
>Again, that does not resemble usage of devlink in other drivers (ex.
>bnxt).
Thank you for pointing out my neglect!
>
>> +
>> + 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);
>
>Isn't the order of those two calls mixed up?
I haven't studied the code to figure out why but other drivers also
use the same order.
>
>> free_netdev(ndev);
>> }
>>
>> --
>> 2.27.0
>>
--
Best regards,
Coiby
On 2020-08-21 11:08 +0800, Coiby Xu wrote:
[...]
> > > 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);
> >
> > I would suggest to put this in qlge.h instead of creating a new file.
>
> Although there are only two lines for now, is it possible qlge will add
> more devlink code? If that's the case, a file to single out these code
I would say that if there's more content in the future, it can move to a
separate file in the future.
If you feel strongly about putting this in its own file right away, then
make sure to add the usual
#ifndef QLGE_HEALTH_H
#define QLGE_HEALTH_H
...
On Fri, Aug 21, 2020 at 11:08:22AM +0800, Coiby Xu wrote:
>On Sun, Aug 16, 2020 at 11:56:40AM +0900, Benjamin Poirier wrote:
>>On 2020-08-15 00:05 +0800, Coiby Xu wrote:
>>>Initialize devlink health dump framework for the dlge driver so the
>>>coredump could be done via devlink.
>>>
>>>Signed-off-by: Coiby Xu <[email protected]>
>>>---
>>> 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 *);
>>> };
>>>
>>
>>This patch doesn't apply over the latest staging tree. I think your tree
>>is missing commit d923bb6bf508 ("staging: qlge: qlge.h: Function
>>definition arguments should have names.")
>
>Thank you for applying the patch to test it! I had incorrect
>understanding about the word "RFC" and didn't do a rebase onto
>the latest staging tree.
>
>>
>>>+
>>>+
>>>+struct qlge_devlink {
>>>+ struct ql_adapter *qdev;
>>>+ struct net_device *ndev;
>>
>>I don't have experience implementing devlink callbacks but looking at
>>some other devlink users (mlx4, ionic, ice), all of them use devlink
>>priv space for their main private structure. That would be struct
>>ql_adapter in this case. Is there a good reason to stray from that
>>pattern?
>>
>>>+ 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,
>>>+};
>>
>>I think
>> select NET_DEVLINK
>>should be added to drivers/staging/qlge/Kconfig
>
>Thank you for reminding me!
>
>>
>>>+
>>>+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;
>>>+}
>>>+
>>>+
>>
>>Stray newlines
>
>Will fix it in v1.
>
>>
>>>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);
>>
>>I would suggest to put this in qlge.h instead of creating a new file.
>
>Although there are only two lines for now, is it possible qlge will add
>more devlink code? If that's the case, a file to single out these code
>is necessary as is the same to some other drivers,
>
> $ find drivers -name *health*.h
> drivers/net/ethernet/mellanox/mlx5/core/en/health.h
>
> $ find drivers -name *devlink*.h
> drivers/net/ethernet/huawei/hinic/hinic_devlink.h
> drivers/net/ethernet/mellanox/mlx5/core/devlink.h
> drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
> drivers/net/ethernet/intel/ice/ice_devlink.h
> drivers/net/ethernet/pensando/ionic/ionic_devlink.h
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
>
>>
>>>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);
>>
>>Are you sure it's safe to continue devlink init after an error here?
>>Again, that does not resemble usage of devlink in other drivers (ex.
>>bnxt).
>
>Thank you for pointing out my neglect!
>
>>
>>>+
>>>+ 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);
>>
>>Isn't the order of those two calls mixed up?
>
>I haven't studied the code to figure out why but other drivers also
>use the same order.
Today I re-visit this issue and find all exiting drivers except for
drivers/net/ethernet/mellanox/mlx5/core and drivers/net/ethernet/huawei/hinic
call devlink_health_reporter_destroy before devlink_unregister. I guess
I happened to look at mlx5 and hinic as the examples before.
I also examine devlink_unregister and devlink_health_reporter_destroy
and find they devlink_health_reporter_destroy doesn't need struct devlink.
But I will change the order in v1 anyway.
>>
>>> free_netdev(ndev);
>>> }
>>>
>>>--
>>>2.27.0
>>>
>
>--
>Best regards,
>Coiby
--
Best regards,
Coiby