diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index af7a8b08b2e..5e03ab78fc8 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -920,3 +920,29 @@ int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) return qp->device->detach_mcast(qp, gid, lid); } EXPORT_SYMBOL(ib_detach_mcast); + +struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) +{ + struct ib_xrcd *xrcd; + + if (!device->alloc_xrcd) + return ERR_PTR(-ENOSYS); + + xrcd = device->alloc_xrcd(device, NULL, NULL); + if (!IS_ERR(xrcd)) { + xrcd->device = device; + atomic_set(&xrcd->usecnt, 0); + } + + return xrcd; +} +EXPORT_SYMBOL(ib_alloc_xrcd); + +int ib_dealloc_xrcd(struct ib_xrcd *xrcd) +{ + if (atomic_read(&xrcd->usecnt)) + return -EBUSY; + + return xrcd->device->dealloc_xrcd(xrcd); +} +EXPORT_SYMBOL(ib_dealloc_xrcd); |