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IB/{rdmavt, hfi1, qib}: Self determine driver name 

Currently the HFI and QIB drivers allow the IB core to assign a unit
number to the driver name string.

If multiple devices exist in a system, there is a possibility that the
device unit number and the IB core number will be mismatched.

Fix by using the driver defined unit number to generate the device
name.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Michael J. Ruhl 2017-12-18 19:56:37 -08:00 committed by Doug Ledford
parent 437ff786e2
commit 5084c8ff21
5 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/hw/hfi1/init.c
View File

@ -1272,6 +1272,8 @@ struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra)
"Could not allocate unit ID: error %d\n", -ret);
goto bail;
}
rvt_set_ibdev_name(&dd->verbs_dev.rdi, "%s_%d", class_name(), dd->unit);
/*
* Initialize all locks for the device. This needs to be as early as
* possible so locks are usable.

3
drivers/infiniband/hw/hfi1/verbs.c
View File

@ -1844,7 +1844,6 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
struct hfi1_ibport *ibp = &ppd->ibport_data;
unsigned i;
int ret;
size_t lcpysz = IB_DEVICE_NAME_MAX;
for (i = 0; i < dd->num_pports; i++)
init_ibport(ppd + i);
@ -1872,8 +1871,6 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
*/
if (!ib_hfi1_sys_image_guid)
ib_hfi1_sys_image_guid = ibdev->node_guid;
lcpysz = strlcpy(ibdev->name, class_name(), lcpysz);
strlcpy(ibdev->name + lcpysz, "_%d", IB_DEVICE_NAME_MAX - lcpysz);
ibdev->owner = THIS_MODULE;
ibdev->phys_port_cnt = dd->num_pports;
ibdev->dev.parent = &dd->pcidev->dev;

2
drivers/infiniband/hw/qib/qib_init.c
View File

@ -1119,6 +1119,8 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
"Could not allocate unit ID: error %d\n", -ret);
goto bail;
}
rvt_set_ibdev_name(&dd->verbs_dev.rdi, "%s%d", "qib", dd->unit);
dd->int_counter = alloc_percpu(u64);
if (!dd->int_counter) {
ret = -ENOMEM;

1
drivers/infiniband/hw/qib/qib_verbs.c
View File

@ -1571,7 +1571,6 @@ int qib_register_ib_device(struct qib_devdata *dd)
if (!ib_qib_sys_image_guid)
ib_qib_sys_image_guid = ppd->guid;
strlcpy(ibdev->name, "qib%d", IB_DEVICE_NAME_MAX);
ibdev->owner = THIS_MODULE;
ibdev->node_guid = ppd->guid;
ibdev->phys_port_cnt = dd->num_pports;

13
include/rdma/rdma_vt.h
View File

@ -419,6 +419,19 @@ struct rvt_dev_info {
};
/**
* rvt_set_ibdev_name - Craft an IB device name from client info
* @rdi: pointer to the client rvt_dev_info structure
* @name: client specific name
* @unit: client specific unit number.
*/
static inline void rvt_set_ibdev_name(struct rvt_dev_info *rdi,
const char *fmt, const char *name,
const int unit)
{
snprintf(rdi->ibdev.name, sizeof(rdi->ibdev.name), fmt, name, unit);
}
static inline struct rvt_pd *ibpd_to_rvtpd(struct ib_pd *ibpd)
{
return container_of(ibpd, struct rvt_pd, ibpd);