static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
{
int err;
struct rxe_dev *rxe = to_rdev(ibpd->device);
struct rxe_pd *pd = to_rpd(ibpd);
struct rxe_ah *ah;
err = rxe_av_chk_attr(rxe, attr);
if (err)
goto err1;
ah = rxe_alloc(&rxe->ah_pool);
if (!ah) {
err = -ENOMEM;
goto err1;
}
rxe_add_ref(pd);
ah->pd = pd;
err = rxe_init_av(rxe, attr, &ah->av);
if (err)
goto err2;
return &ah->ibah;
err2:
rxe_drop_ref(pd);
rxe_drop_ref(ah);
err1:
return ERR_PTR(err);
}
static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
{
int err;
struct rxe_dev *rxe = to_rdev(ibah->device);
struct rxe_ah *ah = to_rah(ibah);
err = rxe_av_chk_attr(rxe, attr);
if (err)
return err;
rxe_init_av(attr, &ah->av);
return 0;
}
static int rxe_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr,
u32 flags, struct ib_udata *udata)
{
int err;
struct rxe_dev *rxe = to_rdev(ibah->device);
struct rxe_ah *ah = to_rah(ibah);
err = rxe_av_chk_attr(rxe, attr);
if (err)
return err;
err = rxe_add_to_pool(&rxe->ah_pool, &ah->pelem);
if (err)
return err;
rxe_init_av(attr, &ah->av);
return 0;
}
/* called by the modify qp verb, this routine checks all the parameters before
* making any changes
*/
int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_attr *attr, int mask)
{
enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
attr->cur_qp_state : qp->attr.qp_state;
enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
attr->qp_state : cur_state;
if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask,
IB_LINK_LAYER_ETHERNET)) {
pr_warn("invalid mask or state for qp\n");
goto err1;
}
if (mask & IB_QP_STATE) {
if (cur_state == IB_QPS_SQD) {
if (qp->req.state == QP_STATE_DRAIN &&
new_state != IB_QPS_ERR)
goto err1;
}
}
if (mask & IB_QP_PORT) {
if (attr->port_num != 1) {
pr_warn("invalid port %d\n", attr->port_num);
goto err1;
}
}
if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
goto err1;
if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
goto err1;
if (mask & IB_QP_ALT_PATH) {
if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
goto err1;
if (attr->alt_port_num != 1) {
pr_warn("invalid alt port %d\n", attr->alt_port_num);
goto err1;
}
if (attr->alt_timeout > 31) {
pr_warn("invalid QP alt timeout %d > 31\n",
attr->alt_timeout);
goto err1;
}
}
if (mask & IB_QP_PATH_MTU) {
struct rxe_port *port = &rxe->port;
enum ib_mtu max_mtu = port->attr.max_mtu;
enum ib_mtu mtu = attr->path_mtu;
if (mtu > max_mtu) {
pr_debug("invalid mtu (%d) > (%d)\n",
ib_mtu_enum_to_int(mtu),
ib_mtu_enum_to_int(max_mtu));
goto err1;
}
}
if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
pr_warn("invalid max_rd_atomic %d > %d\n",
attr->max_rd_atomic,
rxe->attr.max_qp_rd_atom);
goto err1;
}
}
if (mask & IB_QP_TIMEOUT) {
if (attr->timeout > 31) {
pr_warn("invalid QP timeout %d > 31\n",
attr->timeout);
goto err1;
}
}
return 0;
err1:
return -EINVAL;
}
