int siw_dealloc_ucontext(struct ib_ucontext *ofa_ctx)
{
struct siw_ucontext *ctx = siw_ctx_ofa2siw(ofa_ctx);
atomic_dec(&ctx->sdev->num_ctx);
kfree(ctx);
return 0;
}
int siw_dealloc_ucontext(struct ib_ucontext *ofa_ctx)
{
struct siw_ucontext *ctx = siw_ctx_ofa2siw(ofa_ctx);
struct siw_event_file *file = ctx->event_file;
if (file) {
spin_lock_irq(&file->lock);
file->ctx = NULL;
spin_unlock_irq(&file->lock);
}
atomic_dec(&ctx->sdev->num_ctx);
kfree(ctx);
return 0;
}
/*
* siw_create_cq()
*
* Create CQ of requested size on given device.
*
* @ofa_dev: OFA device contained in siw device
* @size: maximum number of CQE's allowed.
* @ib_context: user context.
* @udata: used to provide CQ ID back to user.
*/
static struct ib_cq *do_siw_create_cq(struct ib_device *ofa_dev,
const struct ib_cq_init_attr *init_attr,
struct ib_ucontext *ib_context,
struct ib_udata *udata)
{
struct siw_ucontext *ctx;
struct siw_cq *cq = NULL;
struct siw_dev *sdev = siw_dev_ofa2siw(ofa_dev);
struct urdma_uresp_create_cq uresp;
int rv;
if (!ofa_dev) {
pr_warn("NO OFA device\n");
rv = -ENODEV;
goto err_out;
}
if (atomic_inc_return(&sdev->num_cq) > SIW_MAX_CQ) {
pr_debug(": Out of CQ's\n");
rv = -ENOMEM;
goto err_out;
}
if (init_attr->cqe < 1) {
pr_debug(": CQE: %d\n", init_attr->cqe);
rv = -EINVAL;
goto err_out;
}
cq = kzalloc(sizeof *cq, GFP_KERNEL);
if (!cq) {
pr_debug(": kmalloc\n");
rv = -ENOMEM;
goto err_out;
}
cq->ofa_cq.cqe = init_attr->cqe;
if (!ib_context) {
rv = -EINVAL;
goto err_out;
}
ctx = siw_ctx_ofa2siw(ib_context);
rv = siw_cq_add(sdev, cq);
if (rv)
goto err_out;
uresp.cq_id = OBJ_ID(cq);
rv = ib_copy_to_udata(udata, &uresp, sizeof uresp);
if (rv)
goto err_out_idr;
return &cq->ofa_cq;
err_out_idr:
siw_remove_obj(&sdev->idr_lock, &sdev->cq_idr, &cq->hdr);
err_out:
pr_debug(DBG_OBJ ": CQ creation failed %d", rv);
kfree(cq);
atomic_dec(&sdev->num_cq);
return ERR_PTR(rv);
}
