mlx4: Add infrastructure for selecting VFs to enable QP0 via MLX proxy QPs
This commit adds the infrastructure for enabling selected VFs to operate SMI (QP0) MADs without restriction. Additionally, for these enabled VFs, their QP0 proxy and tunnel QPs are MLX QPs. As such, they operate over VL15. Therefore, they are not affected by "credit" problems or changes in the VLArb table (which may shut down VL0). Non-enabled VFs may only create UD proxy QP0 qps (which are forced by the hypervisor to send packets using the q-key it assigns and places in the qp-context). Thus, non-enabled VFs will not pose a security risk. The hypervisor discards any privileged MADs it receives from these non-enabled VFs. By default, all VFs are NOT enabled, and must explicitly be enabled by the administrator. The sysfs interface which operates the VF enablement infrastructure is provided in the next commit. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
parent
97982f5a91
commit
99ec41d0a4
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@ -608,6 +608,16 @@ static int qp_has_rq(struct ib_qp_init_attr *attr)
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return !attr->srq;
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}
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static int qp0_enabled_vf(struct mlx4_dev *dev, int qpn)
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{
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int i;
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for (i = 0; i < dev->caps.num_ports; i++) {
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if (qpn == dev->caps.qp0_proxy[i])
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return !!dev->caps.qp0_qkey[i];
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}
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return 0;
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}
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static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
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struct ib_qp_init_attr *init_attr,
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struct ib_udata *udata, int sqpn, struct mlx4_ib_qp **caller_qp)
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@ -625,10 +635,13 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
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!(init_attr->create_flags & MLX4_IB_SRIOV_SQP))) {
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if (init_attr->qp_type == IB_QPT_GSI)
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qp_type = MLX4_IB_QPT_PROXY_GSI;
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else if (mlx4_is_master(dev->dev))
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qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER;
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else
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qp_type = MLX4_IB_QPT_PROXY_SMI;
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else {
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if (mlx4_is_master(dev->dev) ||
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qp0_enabled_vf(dev->dev, sqpn))
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qp_type = MLX4_IB_QPT_PROXY_SMI_OWNER;
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else
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qp_type = MLX4_IB_QPT_PROXY_SMI;
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}
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}
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qpn = sqpn;
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/* add extra sg entry for tunneling */
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@ -643,7 +656,9 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
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return -EINVAL;
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if (tnl_init->proxy_qp_type == IB_QPT_GSI)
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qp_type = MLX4_IB_QPT_TUN_GSI;
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else if (tnl_init->slave == mlx4_master_func_num(dev->dev))
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else if (tnl_init->slave == mlx4_master_func_num(dev->dev) ||
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mlx4_vf_smi_enabled(dev->dev, tnl_init->slave,
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tnl_init->port))
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qp_type = MLX4_IB_QPT_TUN_SMI_OWNER;
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else
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qp_type = MLX4_IB_QPT_TUN_SMI;
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@ -1930,6 +1945,19 @@ out:
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return err;
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}
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static int vf_get_qp0_qkey(struct mlx4_dev *dev, int qpn, u32 *qkey)
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{
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int i;
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for (i = 0; i < dev->caps.num_ports; i++) {
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if (qpn == dev->caps.qp0_proxy[i] ||
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qpn == dev->caps.qp0_tunnel[i]) {
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*qkey = dev->caps.qp0_qkey[i];
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return 0;
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}
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}
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return -EINVAL;
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}
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static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp,
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struct ib_send_wr *wr,
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void *wqe, unsigned *mlx_seg_len)
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@ -1987,8 +2015,13 @@ static int build_sriov_qp0_header(struct mlx4_ib_sqp *sqp,
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cpu_to_be32(mdev->dev->caps.qp0_tunnel[sqp->qp.port - 1]);
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sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
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if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey))
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return -EINVAL;
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if (mlx4_is_master(mdev->dev)) {
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if (mlx4_get_parav_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey))
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return -EINVAL;
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} else {
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if (vf_get_qp0_qkey(mdev->dev, sqp->qp.mqp.qpn, &qkey))
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return -EINVAL;
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}
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sqp->ud_header.deth.qkey = cpu_to_be32(qkey);
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sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.mqp.qpn);
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@ -2682,11 +2715,6 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
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break;
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case MLX4_IB_QPT_PROXY_SMI_OWNER:
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if (unlikely(!mlx4_is_master(to_mdev(ibqp->device)->dev))) {
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err = -ENOSYS;
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*bad_wr = wr;
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goto out;
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}
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err = build_sriov_qp0_header(to_msqp(qp), wr, ctrl, &seglen);
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if (unlikely(err)) {
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*bad_wr = wr;
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@ -1666,6 +1666,8 @@ static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
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for (port = min_port; port <= max_port; port++) {
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if (!test_bit(port - 1, actv_ports.ports))
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continue;
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priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
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priv->mfunc.master.vf_admin[slave].enable_smi[port];
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vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
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vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
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vp_oper->state = *vp_admin;
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@ -1717,6 +1719,8 @@ static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave
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for (port = min_port; port <= max_port; port++) {
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if (!test_bit(port - 1, actv_ports.ports))
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continue;
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priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
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MLX4_VF_SMI_DISABLED;
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vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
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if (NO_INDX != vp_oper->vlan_idx) {
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__mlx4_unregister_vlan(&priv->dev,
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@ -2553,6 +2557,13 @@ EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
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int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port)
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{
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return 0;
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struct mlx4_priv *priv = mlx4_priv(dev);
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if (slave < 1 || slave >= dev->num_slaves ||
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port < 1 || port > MLX4_MAX_PORTS)
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return 0;
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return priv->mfunc.master.vf_oper[slave].smi_enabled[port] ==
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MLX4_VF_SMI_ENABLED;
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}
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EXPORT_SYMBOL_GPL(mlx4_vf_smi_enabled);
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@ -178,8 +178,8 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
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struct mlx4_cmd_info *cmd)
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{
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struct mlx4_priv *priv = mlx4_priv(dev);
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u8 field;
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u32 size;
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u8 field, port;
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u32 size, proxy_qp, qkey;
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int err = 0;
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#define QUERY_FUNC_CAP_FLAGS_OFFSET 0x0
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@ -209,6 +209,7 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
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/* when opcode modifier = 1 */
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#define QUERY_FUNC_CAP_PHYS_PORT_OFFSET 0x3
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#define QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET 0x4
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#define QUERY_FUNC_CAP_FLAGS0_OFFSET 0x8
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#define QUERY_FUNC_CAP_FLAGS1_OFFSET 0xc
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@ -221,6 +222,7 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
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#define QUERY_FUNC_CAP_FLAGS1_FORCE_MAC 0x40
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#define QUERY_FUNC_CAP_FLAGS1_FORCE_VLAN 0x80
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#define QUERY_FUNC_CAP_FLAGS1_NIC_INFO 0x10
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#define QUERY_FUNC_CAP_VF_ENABLE_QP0 0x08
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#define QUERY_FUNC_CAP_FLAGS0_FORCE_PHY_WQE_GID 0x80
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@ -234,28 +236,35 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
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return -EINVAL;
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vhcr->in_modifier = converted_port;
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/* Set nic_info bit to mark new fields support */
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field = QUERY_FUNC_CAP_FLAGS1_NIC_INFO;
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MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FLAGS1_OFFSET);
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/* phys-port = logical-port */
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field = vhcr->in_modifier -
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find_first_bit(actv_ports.ports, dev->caps.num_ports);
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MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_PHYS_PORT_OFFSET);
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field = vhcr->in_modifier;
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port = vhcr->in_modifier;
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proxy_qp = dev->phys_caps.base_proxy_sqpn + 8 * slave + port - 1;
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/* Set nic_info bit to mark new fields support */
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field = QUERY_FUNC_CAP_FLAGS1_NIC_INFO;
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if (mlx4_vf_smi_enabled(dev, slave, port) &&
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!mlx4_get_parav_qkey(dev, proxy_qp, &qkey)) {
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field |= QUERY_FUNC_CAP_VF_ENABLE_QP0;
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MLX4_PUT(outbox->buf, qkey,
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QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET);
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}
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MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FLAGS1_OFFSET);
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/* size is now the QP number */
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size = dev->phys_caps.base_tunnel_sqpn + 8 * slave + field - 1;
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size = dev->phys_caps.base_tunnel_sqpn + 8 * slave + port - 1;
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MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP0_TUNNEL);
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size += 2;
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MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP1_TUNNEL);
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size = dev->phys_caps.base_proxy_sqpn + 8 * slave + field - 1;
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MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP0_PROXY);
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size += 2;
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MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP1_PROXY);
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MLX4_PUT(outbox->buf, proxy_qp, QUERY_FUNC_CAP_QP0_PROXY);
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proxy_qp += 2;
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MLX4_PUT(outbox->buf, proxy_qp, QUERY_FUNC_CAP_QP1_PROXY);
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MLX4_PUT(outbox->buf, dev->caps.phys_port_id[vhcr->in_modifier],
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QUERY_FUNC_CAP_PHYS_PORT_ID);
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@ -326,7 +335,7 @@ int mlx4_QUERY_FUNC_CAP(struct mlx4_dev *dev, u32 gen_or_port,
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struct mlx4_cmd_mailbox *mailbox;
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u32 *outbox;
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u8 field, op_modifier;
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u32 size;
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u32 size, qkey;
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int err = 0, quotas = 0;
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op_modifier = !!gen_or_port; /* 0 = general, 1 = logical port */
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@ -442,6 +451,13 @@ int mlx4_QUERY_FUNC_CAP(struct mlx4_dev *dev, u32 gen_or_port,
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goto out;
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}
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if (func_cap->flags1 & QUERY_FUNC_CAP_VF_ENABLE_QP0) {
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MLX4_GET(qkey, outbox, QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET);
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func_cap->qp0_qkey = qkey;
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} else {
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func_cap->qp0_qkey = 0;
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}
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MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP0_TUNNEL);
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func_cap->qp0_tunnel_qpn = size & 0xFFFFFF;
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@ -134,6 +134,7 @@ struct mlx4_func_cap {
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int max_eq;
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int reserved_eq;
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int mcg_quota;
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u32 qp0_qkey;
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u32 qp0_tunnel_qpn;
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u32 qp0_proxy_qpn;
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u32 qp1_tunnel_qpn;
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@ -666,13 +666,15 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
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return -ENODEV;
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}
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dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
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dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
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dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
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dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
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dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
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if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
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!dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) {
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!dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
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!dev->caps.qp0_qkey) {
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err = -ENOMEM;
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goto err_mem;
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}
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@ -684,6 +686,7 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
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" port %d, aborting (%d).\n", i, err);
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goto err_mem;
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}
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dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
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dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
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dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
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dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
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@ -729,12 +732,16 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
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return 0;
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err_mem:
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kfree(dev->caps.qp0_qkey);
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kfree(dev->caps.qp0_tunnel);
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kfree(dev->caps.qp0_proxy);
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kfree(dev->caps.qp1_tunnel);
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kfree(dev->caps.qp1_proxy);
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dev->caps.qp0_tunnel = dev->caps.qp0_proxy =
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dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL;
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dev->caps.qp0_qkey = NULL;
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dev->caps.qp0_tunnel = NULL;
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dev->caps.qp0_proxy = NULL;
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dev->caps.qp1_tunnel = NULL;
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dev->caps.qp1_proxy = NULL;
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return err;
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}
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@ -1697,6 +1704,7 @@ unmap_bf:
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unmap_bf_area(dev);
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if (mlx4_is_slave(dev)) {
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kfree(dev->caps.qp0_qkey);
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kfree(dev->caps.qp0_tunnel);
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kfree(dev->caps.qp0_proxy);
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kfree(dev->caps.qp1_tunnel);
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@ -2573,6 +2581,7 @@ err_master_mfunc:
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mlx4_multi_func_cleanup(dev);
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if (mlx4_is_slave(dev)) {
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kfree(dev->caps.qp0_qkey);
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kfree(dev->caps.qp0_tunnel);
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kfree(dev->caps.qp0_proxy);
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kfree(dev->caps.qp1_tunnel);
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@ -2702,6 +2711,7 @@ static void __mlx4_remove_one(struct pci_dev *pdev)
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if (!mlx4_is_slave(dev))
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mlx4_free_ownership(dev);
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kfree(dev->caps.qp0_qkey);
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kfree(dev->caps.qp0_tunnel);
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kfree(dev->caps.qp0_proxy);
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kfree(dev->caps.qp1_tunnel);
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@ -133,6 +133,11 @@ enum {
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MLX4_COMM_CMD_FLR = 254
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};
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enum {
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MLX4_VF_SMI_DISABLED,
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MLX4_VF_SMI_ENABLED
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};
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/*The flag indicates that the slave should delay the RESET cmd*/
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#define MLX4_DELAY_RESET_SLAVE 0xbbbbbbb
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/*indicates how many retries will be done if we are in the middle of FLR*/
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@ -488,6 +493,7 @@ struct mlx4_vport_state {
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struct mlx4_vf_admin_state {
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struct mlx4_vport_state vport[MLX4_MAX_PORTS + 1];
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u8 enable_smi[MLX4_MAX_PORTS + 1];
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};
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struct mlx4_vport_oper_state {
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@ -495,8 +501,10 @@ struct mlx4_vport_oper_state {
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int mac_idx;
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int vlan_idx;
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};
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struct mlx4_vf_oper_state {
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struct mlx4_vport_oper_state vport[MLX4_MAX_PORTS + 1];
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u8 smi_enabled[MLX4_MAX_PORTS + 1];
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};
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struct slave_list {
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@ -2827,10 +2827,12 @@ static int get_containing_mtt(struct mlx4_dev *dev, int slave, int start,
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}
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static int verify_qp_parameters(struct mlx4_dev *dev,
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struct mlx4_vhcr *vhcr,
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struct mlx4_cmd_mailbox *inbox,
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enum qp_transition transition, u8 slave)
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{
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u32 qp_type;
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u32 qpn;
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struct mlx4_qp_context *qp_ctx;
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enum mlx4_qp_optpar optpar;
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int port;
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@ -2870,6 +2872,20 @@ static int verify_qp_parameters(struct mlx4_dev *dev,
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return -EINVAL;
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}
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break;
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case MLX4_QP_ST_MLX:
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qpn = vhcr->in_modifier & 0x7fffff;
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port = (qp_ctx->pri_path.sched_queue >> 6 & 1) + 1;
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if (transition == QP_TRANS_INIT2RTR &&
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slave != mlx4_master_func_num(dev) &&
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mlx4_is_qp_reserved(dev, qpn) &&
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!mlx4_vf_smi_enabled(dev, slave, port)) {
|
||||
/* only enabled VFs may create MLX proxy QPs */
|
||||
mlx4_err(dev, "%s: unprivileged slave %d attempting to create an MLX proxy special QP on port %d\n",
|
||||
__func__, slave, port);
|
||||
return -EPERM;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -3454,7 +3470,7 @@ int mlx4_INIT2RTR_QP_wrapper(struct mlx4_dev *dev, int slave,
|
|||
err = adjust_qp_sched_queue(dev, slave, qpc, inbox);
|
||||
if (err)
|
||||
return err;
|
||||
err = verify_qp_parameters(dev, inbox, QP_TRANS_INIT2RTR, slave);
|
||||
err = verify_qp_parameters(dev, vhcr, inbox, QP_TRANS_INIT2RTR, slave);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
@ -3508,7 +3524,7 @@ int mlx4_RTR2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
|
|||
err = adjust_qp_sched_queue(dev, slave, context, inbox);
|
||||
if (err)
|
||||
return err;
|
||||
err = verify_qp_parameters(dev, inbox, QP_TRANS_RTR2RTS, slave);
|
||||
err = verify_qp_parameters(dev, vhcr, inbox, QP_TRANS_RTR2RTS, slave);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
@ -3530,7 +3546,7 @@ int mlx4_RTS2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
|
|||
err = adjust_qp_sched_queue(dev, slave, context, inbox);
|
||||
if (err)
|
||||
return err;
|
||||
err = verify_qp_parameters(dev, inbox, QP_TRANS_RTS2RTS, slave);
|
||||
err = verify_qp_parameters(dev, vhcr, inbox, QP_TRANS_RTS2RTS, slave);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
@ -3567,7 +3583,7 @@ int mlx4_SQD2SQD_QP_wrapper(struct mlx4_dev *dev, int slave,
|
|||
err = adjust_qp_sched_queue(dev, slave, context, inbox);
|
||||
if (err)
|
||||
return err;
|
||||
err = verify_qp_parameters(dev, inbox, QP_TRANS_SQD2SQD, slave);
|
||||
err = verify_qp_parameters(dev, vhcr, inbox, QP_TRANS_SQD2SQD, slave);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
@ -3589,7 +3605,7 @@ int mlx4_SQD2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
|
|||
err = adjust_qp_sched_queue(dev, slave, context, inbox);
|
||||
if (err)
|
||||
return err;
|
||||
err = verify_qp_parameters(dev, inbox, QP_TRANS_SQD2RTS, slave);
|
||||
err = verify_qp_parameters(dev, vhcr, inbox, QP_TRANS_SQD2RTS, slave);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
|
|
@ -401,6 +401,7 @@ struct mlx4_caps {
|
|||
int max_rq_desc_sz;
|
||||
int max_qp_init_rdma;
|
||||
int max_qp_dest_rdma;
|
||||
u32 *qp0_qkey;
|
||||
u32 *qp0_proxy;
|
||||
u32 *qp1_proxy;
|
||||
u32 *qp0_tunnel;
|
||||
|
|
Loading…
Reference in a new issue