int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid) { struct ipoib_dev_priv *priv = netdev_priv(dev); struct ib_qp_attr *qp_attr; int attr_mask; int ret; u16 pkey_index; ret = -ENOMEM; qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); if (!qp_attr) goto out; if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); ret = -ENXIO; goto out; } set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); /* set correct QKey for QP */ qp_attr->qkey = priv->qkey; attr_mask = IB_QP_QKEY; ret = ib_modify_qp(priv->qp, qp_attr, attr_mask); if (ret) { ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); goto out; } /* attach QP to multicast group */ down(&priv->mcast_mutex); ret = ib_attach_mcast(priv->qp, mgid, mlid); up(&priv->mcast_mutex); if (ret) ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); out: kfree(qp_attr); return ret; }
static int send_mad_to_slave(int slave, struct mlx4_ib_demux_ctx *ctx, struct ib_mad *mad) { struct mlx4_ib_dev *dev = ctx->dev; struct ib_mad_agent *agent = dev->send_agent[ctx->port - 1][1]; struct ib_wc wc; struct ib_ah_attr ah_attr; /* Our agent might not yet be registered when mads start to arrive */ if (!agent) return -EAGAIN; ib_query_ah(dev->sm_ah[ctx->port - 1], &ah_attr); if (ib_find_cached_pkey(&dev->ib_dev, ctx->port, IB_DEFAULT_PKEY_FULL, &wc.pkey_index)) return -EINVAL; wc.sl = 0; wc.dlid_path_bits = 0; wc.port_num = ctx->port; wc.slid = ah_attr.dlid; /* opensm lid */ wc.src_qp = 1; return mlx4_ib_send_to_slave(dev, slave, ctx->port, IB_QPT_GSI, &wc, NULL, mad); }
int ipoib_init_qp(struct net_device *dev) { struct ipoib_dev_priv *priv = netdev_priv(dev); int ret; u16 pkey_index; struct ib_qp_attr qp_attr; int attr_mask; /* * Search through the port P_Key table for the requested pkey value. * The port has to be assigned to the respective IB partition in * advance. */ ret = ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index); if (ret) { clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); return ret; } set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); qp_attr.qp_state = IB_QPS_INIT; qp_attr.qkey = 0; qp_attr.port_num = priv->port; qp_attr.pkey_index = pkey_index; attr_mask = IB_QP_QKEY | IB_QP_PORT | IB_QP_PKEY_INDEX | IB_QP_STATE; ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); if (ret) { ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); goto out_fail; } qp_attr.qp_state = IB_QPS_RTR; /* Can't set this in a INIT->RTR transition */ attr_mask &= ~IB_QP_PORT; ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); if (ret) { ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); goto out_fail; } qp_attr.qp_state = IB_QPS_RTS; qp_attr.sq_psn = 0; attr_mask |= IB_QP_SQ_PSN; attr_mask &= ~IB_QP_PKEY_INDEX; ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); if (ret) { ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); goto out_fail; } return 0; out_fail: qp_attr.qp_state = IB_QPS_RESET; if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) ipoib_warn(priv, "Failed to modify QP to RESET state\n"); return ret; }