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RDMA/bnxt_re: Change aux driver data to en_info to hold more information

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rdev will be destroyed and recreated during the FW error
recovery scenarios. So to keep the state, if any, use an
en_info structure which gets created/freed based on auxiliary
device initialization/de-initialization.

Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1726027710-2292-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Chandramohan Akula 2024-09-10 21:08:27 -07:00 committed by Leon Romanovsky
parent 12fb1153c5
commit dee3da3422
2 changed files with 67 additions and 12 deletions
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6
drivers/infiniband/hw/bnxt_re/bnxt_re.h
View File

@ -107,6 +107,11 @@ struct bnxt_re_gsi_context {
struct bnxt_re_sqp_entries *sqp_tbl;
};
struct bnxt_re_en_dev_info {
struct bnxt_en_dev *en_dev;
struct bnxt_re_dev *rdev;
};
#define BNXT_RE_AEQ_IDX 0
#define BNXT_RE_NQ_IDX 1
#define BNXT_RE_GEN_P5_MAX_VF 64
@ -155,6 +160,7 @@ struct bnxt_re_dev {
#define BNXT_RE_FLAG_ERR_DEVICE_DETACHED 17
#define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29
struct net_device *netdev;
struct auxiliary_device *adev;
struct notifier_block nb;
unsigned int version, major, minor;
struct bnxt_qplib_chip_ctx *chip_ctx;

73
drivers/infiniband/hw/bnxt_re/main.c
View File

@ -292,10 +292,13 @@ static void bnxt_re_vf_res_config(struct bnxt_re_dev *rdev)
static void bnxt_re_shutdown(struct auxiliary_device *adev)
{
struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
struct bnxt_re_dev *rdev;
if (!rdev)
if (!en_info)
return;
rdev = en_info->rdev;
ib_unregister_device(&rdev->ibdev);
bnxt_re_dev_uninit(rdev);
}
@ -1794,14 +1797,33 @@ fail:
return rc;
}
static void bnxt_re_update_en_info_rdev(struct bnxt_re_dev *rdev,
struct bnxt_re_en_dev_info *en_info,
struct auxiliary_device *adev)
{
/* Before updating the rdev pointer in bnxt_re_en_dev_info structure,
* take the rtnl lock to avoid accessing invalid rdev pointer from
* L2 ULP callbacks. This is applicable in all the places where rdev
* pointer is updated in bnxt_re_en_dev_info.
*/
rtnl_lock();
en_info->rdev = rdev;
rdev->adev = adev;
rtnl_unlock();
}
static int bnxt_re_add_device(struct auxiliary_device *adev)
{
struct bnxt_aux_priv *aux_priv =
container_of(adev, struct bnxt_aux_priv, aux_dev);
struct bnxt_re_en_dev_info *en_info;
struct bnxt_en_dev *en_dev;
struct bnxt_re_dev *rdev;
int rc;
en_info = auxiliary_get_drvdata(adev);
en_dev = en_info->en_dev;
/* en_dev should never be NULL as long as adev and aux_dev are valid. */
en_dev = aux_priv->edev;
@ -1811,6 +1833,8 @@ static int bnxt_re_add_device(struct auxiliary_device *adev)
goto exit;
}
bnxt_re_update_en_info_rdev(rdev, en_info, adev);
rc = bnxt_re_dev_init(rdev);
if (rc)
goto re_dev_dealloc;
@ -1821,11 +1845,11 @@ static int bnxt_re_add_device(struct auxiliary_device *adev)
aux_priv->aux_dev.name);
goto re_dev_uninit;
}
auxiliary_set_drvdata(adev, rdev);
return 0;
re_dev_uninit:
bnxt_re_update_en_info_rdev(NULL, en_info, adev);
bnxt_re_dev_uninit(rdev);
re_dev_dealloc:
ib_dealloc_device(&rdev->ibdev);
@ -1911,12 +1935,18 @@ exit:
static void bnxt_re_remove(struct auxiliary_device *adev)
{
struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
if (!rdev)
return;
struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
struct bnxt_re_dev *rdev;
mutex_lock(&bnxt_re_mutex);
if (!en_info) {
mutex_unlock(&bnxt_re_mutex);
return;
}
rdev = en_info->rdev;
if (!rdev)
goto skip_remove;
if (rdev->nb.notifier_call) {
unregister_netdevice_notifier(&rdev->nb);
rdev->nb.notifier_call = NULL;
@ -1931,16 +1961,31 @@ static void bnxt_re_remove(struct auxiliary_device *adev)
bnxt_re_dev_uninit(rdev);
ib_dealloc_device(&rdev->ibdev);
skip_remove:
kfree(en_info);
mutex_unlock(&bnxt_re_mutex);
}
static int bnxt_re_probe(struct auxiliary_device *adev,
const struct auxiliary_device_id *id)
{
struct bnxt_aux_priv *aux_priv =
container_of(adev, struct bnxt_aux_priv, aux_dev);
struct bnxt_re_en_dev_info *en_info;
struct bnxt_en_dev *en_dev;
struct bnxt_re_dev *rdev;
int rc;
en_dev = aux_priv->edev;
mutex_lock(&bnxt_re_mutex);
en_info = kzalloc(sizeof(*en_info), GFP_KERNEL);
if (!en_info) {
mutex_unlock(&bnxt_re_mutex);
return -ENOMEM;
}
en_info->en_dev = en_dev;
auxiliary_set_drvdata(adev, en_info);
rc = bnxt_re_add_device(adev);
if (rc) {
@ -1948,7 +1993,7 @@ static int bnxt_re_probe(struct auxiliary_device *adev,
return rc;
}
rdev = auxiliary_get_drvdata(adev);
rdev = en_info->rdev;
rdev->nb.notifier_call = bnxt_re_netdev_event;
rc = register_netdevice_notifier(&rdev->nb);
@ -1972,11 +2017,13 @@ err:
static int bnxt_re_suspend(struct auxiliary_device *adev, pm_message_t state)
{
struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
struct bnxt_re_dev *rdev;
if (!rdev)
if (!en_info)
return 0;
rdev = en_info->rdev;
mutex_lock(&bnxt_re_mutex);
/* L2 driver may invoke this callback during device error/crash or device
* reset. Current RoCE driver doesn't recover the device in case of
@ -2009,11 +2056,13 @@ static int bnxt_re_suspend(struct auxiliary_device *adev, pm_message_t state)
static int bnxt_re_resume(struct auxiliary_device *adev)
{
struct bnxt_re_dev *rdev = auxiliary_get_drvdata(adev);
struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(adev);
struct bnxt_re_dev *rdev;
if (!rdev)
if (!en_info)
return 0;
rdev = en_info->rdev;
mutex_lock(&bnxt_re_mutex);
/* L2 driver may invoke this callback during device recovery, resume.
* reset. Current RoCE driver doesn't recover the device in case of