(IB, net)/mlx4: Add resource utilization support

Adding visibility of resource usage of QPs, CQs and counters used by
virtual functions. This feature will be used to give the PF administrator
more data while debugging VF status. Usage info was added to ALLOC_RES
command, to notify the PF if the resource which is being reserved or
allocated for the VF will be used by kernel driver or by user verbs.

Updated reservation and allocation functions of QP, CQ and counter with
additional usage parameter.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index ff931c580557b18cdecab6d86d00297e6c7993ff..95382faa7ad1e588d61a2c9cb078c16e33ef59ec 100644 (file)
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -218,6 +218,7 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
                        goto err_mtt;
 
                uar = &to_mucontext(context)->uar;
+               cq->mcq.usage = MLX4_RES_USAGE_USER_VERBS;
        } else {
                err = mlx4_db_alloc(dev->dev, &cq->db, 1);
                if (err)
@@ -233,6 +234,7 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
                        goto err_db;
 
                uar = &dev->priv_uar;
+               cq->mcq.usage = MLX4_RES_USAGE_DRIVER;
        }
 
        if (dev->eq_table)

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index e8c290edb1e13131b35b315bfce0dc91f625cfc9..0944e224c0dfeb2e3d34dc1c34be751986205c01 100644 (file)
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2779,7 +2779,8 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
                allocated = 0;
                if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
                                                IB_LINK_LAYER_ETHERNET) {
-                       err = mlx4_counter_alloc(ibdev->dev, &counter_index);
+                       err = mlx4_counter_alloc(ibdev->dev, &counter_index,
+                                                MLX4_RES_USAGE_DRIVER);
                        /* if failed to allocate a new counter, use default */
                        if (err)
                                counter_index =
@@ -2834,7 +2835,8 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
                ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS;
                err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count,
                                            MLX4_IB_UC_STEER_QPN_ALIGN,
-                                           &ibdev->steer_qpn_base, 0);
+                                           &ibdev->steer_qpn_base, 0,
+                                           MLX4_RES_USAGE_DRIVER);
                if (err)
                        goto err_counter;
 

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index d1caa39a3943a5a9e6d3b8b37a73823f69472fb8..247b9132e9de101e3bb08c3266bda1b2a6da1eb0 100644 (file)
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -769,6 +769,7 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
                        if (err)
                                goto err_mtt;
                }
+               qp->mqp.usage = MLX4_RES_USAGE_USER_VERBS;
        } else {
                err = set_rq_size(dev, &init_attr->cap, !!pd->uobject,
                                  qp_has_rq(init_attr), qp, 0);
@@ -841,6 +842,7 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
                        err = -ENOMEM;
                        goto err_wrid;
                }
+               qp->mqp.usage = MLX4_RES_USAGE_DRIVER;
        }
 
        if (sqpn) {
@@ -860,13 +862,14 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
                                                    (init_attr->cap.max_send_wr ?
                                                     MLX4_RESERVE_ETH_BF_QP : 0) |
                                                    (init_attr->cap.max_recv_wr ?
-                                                    MLX4_RESERVE_A0_QP : 0));
+                                                    MLX4_RESERVE_A0_QP : 0),
+                                                   qp->mqp.usage);
                else
                        if (qp->flags & MLX4_IB_QP_NETIF)
                                err = mlx4_ib_steer_qp_alloc(dev, 1, &qpn);
                        else
                                err = mlx4_qp_reserve_range(dev->dev, 1, 1,
-                                                           &qpn, 0);
+                                                           &qpn, 0, qp->mqp.usage);
                if (err)
                        goto err_proxy;
        }
@@ -1218,7 +1221,9 @@ static struct ib_qp *_mlx4_ib_create_qp(struct ib_pd *pd,
                if (udata)
                        return ERR_PTR(-EINVAL);
                if (init_attr->create_flags & MLX4_IB_QP_CREATE_ROCE_V2_GSI) {
-                       int res = mlx4_qp_reserve_range(to_mdev(pd->device)->dev, 1, 1, &sqpn, 0);
+                       int res = mlx4_qp_reserve_range(to_mdev(pd->device)->dev,
+                                                       1, 1, &sqpn, 0,
+                                                       MLX4_RES_USAGE_DRIVER);
 
                        if (res)
                                return ERR_PTR(res);
@@ -1581,7 +1586,7 @@ static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
            !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK))
                return 0;
 
-       err = mlx4_counter_alloc(dev->dev, &tmp_idx);
+       err = mlx4_counter_alloc(dev->dev, &tmp_idx, MLX4_RES_USAGE_DRIVER);
        if (err)
                return err;
 

diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c
index c56a511b918e034e10fdb055c77785ea4a90b27a..72eb50cd5ecd1728a8bd89c99ca9d5dd02bdbb36 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cq.c
@@ -241,13 +241,14 @@ err_out:
        return err;
 }
 
-static int mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn)
+static int mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn, u8 usage)
 {
+       u32 in_modifier = RES_CQ | (((u32)usage & 3) << 30);
        u64 out_param;
        int err;
 
        if (mlx4_is_mfunc(dev)) {
-               err = mlx4_cmd_imm(dev, 0, &out_param, RES_CQ,
+               err = mlx4_cmd_imm(dev, 0, &out_param, in_modifier,
                                   RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
                                   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
                if (err)
@@ -303,7 +304,7 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent,
 
        cq->vector = vector;
 
-       err = mlx4_cq_alloc_icm(dev, &cq->cqn);
+       err = mlx4_cq_alloc_icm(dev, &cq->cqn, cq->usage);
        if (err)
                return err;
 

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
index 85fe17e4dcfba44b8180488e2070793ab6ee00dd..f849eec21824eb92a9319c36f0e31c25c03e8a53 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
@@ -140,6 +140,7 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
            (cq->type == RX && priv->hwtstamp_config.rx_filter))
                timestamp_en = 1;
 
+       cq->mcq.usage = MLX4_RES_USAGE_DRIVER;
        err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt,
                            &mdev->priv_uar, cq->wqres.db.dma, &cq->mcq,
                            cq->vector, 0, timestamp_en);

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 3a291fc1780ab9193d7202be106f36ca8854b258..e3e6d9fa69fd109d6daa7ab0ad129dd801cf5ab8 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -651,7 +651,8 @@ static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
                return 0;
        }
 
-       err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
+       err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
+                                   MLX4_RES_USAGE_DRIVER);
        en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
        if (err) {
                en_err(priv, "Failed to reserve qp for mac registration\n");

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 436f7689a03212943d5ea70a2214774d2c940d97..ad1ffd5857cbb53091646bfcde21a056ed0b7887 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -1081,7 +1081,8 @@ int mlx4_en_create_drop_qp(struct mlx4_en_priv *priv)
        u32 qpn;
 
        err = mlx4_qp_reserve_range(priv->mdev->dev, 1, 1, &qpn,
-                                   MLX4_RESERVE_A0_QP);
+                                   MLX4_RESERVE_A0_QP,
+                                   MLX4_RES_USAGE_DRIVER);
        if (err) {
                en_err(priv, "Failed reserving drop qpn\n");
                return err;
@@ -1127,7 +1128,8 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
        flags = priv->rx_ring_num == 1 ? MLX4_RESERVE_A0_QP : 0;
        err = mlx4_qp_reserve_range(mdev->dev, priv->rx_ring_num,
                                    priv->rx_ring_num,
-                                   &rss_map->base_qpn, flags);
+                                   &rss_map->base_qpn, flags,
+                                   MLX4_RES_USAGE_DRIVER);
        if (err) {
                en_err(priv, "Failed reserving %d qps\n", priv->rx_ring_num);
                return err;

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 73faa3d779214d86d3c653f9065518375039c7ce..a81db2582555e4dd38f93aeb16b4fab3ea2d0176 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -105,7 +105,8 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
               (unsigned long long) ring->sp_wqres.buf.direct.map);
 
        err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &ring->qpn,
-                                   MLX4_RESERVE_ETH_BF_QP);
+                                   MLX4_RESERVE_ETH_BF_QP,
+                                   MLX4_RES_USAGE_DRIVER);
        if (err) {
                en_err(priv, "failed reserving qp for TX ring\n");
                goto err_hwq_res;

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index a27c9c13a36ed11d577e7cd9cff1e2a9daec137d..fb2591d0e7352a4599aa5be2f3fa44abc6e6a4e0 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2475,7 +2475,7 @@ static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
                priv->def_counter[port] = -1;
 
        for (port = 0; port < dev->caps.num_ports; port++) {
-               err = mlx4_counter_alloc(dev, &idx);
+               err = mlx4_counter_alloc(dev, &idx, MLX4_RES_USAGE_DRIVER);
 
                if (!err || err == -ENOSPC) {
                        priv->def_counter[port] = idx;
@@ -2517,13 +2517,14 @@ int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
        return 0;
 }
 
-int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
+int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx, u8 usage)
 {
+       u32 in_modifier = RES_COUNTER | (((u32)usage & 3) << 30);
        u64 out_param;
        int err;
 
        if (mlx4_is_mfunc(dev)) {
-               err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
+               err = mlx4_cmd_imm(dev, 0, &out_param, in_modifier,
                                   RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
                                   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
                if (!err)

diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 26747212526b074ea0fd4f8c6a0a274b34bb5033..5e5b4475b85e5db2b5eab793402f4b913183dbe0 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -245,8 +245,9 @@ int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
 }
 
 int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
-                         int *base, u8 flags)
+                         int *base, u8 flags, u8 usage)
 {
+       u32 in_modifier = RES_QP | (((u32)usage & 3) << 30);
        u64 in_param = 0;
        u64 out_param;
        int err;
@@ -258,7 +259,7 @@ int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
                set_param_l(&in_param, (((u32)flags) << 24) | (u32)cnt);
                set_param_h(&in_param, align);
                err = mlx4_cmd_imm(dev, in_param, &out_param,
-                                  RES_QP, RES_OP_RESERVE,
+                                  in_modifier, RES_OP_RESERVE,
                                   MLX4_CMD_ALLOC_RES,
                                   MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
                if (err)

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index aad5d81dfb444aeb0dcb4b92aef475023aa897c1..3607da001ad3a0f3de10a92cb1c37062ff5c256a 100644 (file)
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -428,6 +428,12 @@ enum mlx4_steer_type {
        MLX4_NUM_STEERS
 };
 
+enum mlx4_resource_usage {
+       MLX4_RES_USAGE_NONE,
+       MLX4_RES_USAGE_DRIVER,
+       MLX4_RES_USAGE_USER_VERBS,
+};
+
 enum {
        MLX4_NUM_FEXCH          = 64 * 1024,
 };
@@ -748,6 +754,7 @@ struct mlx4_cq {
        } tasklet_ctx;
        int             reset_notify_added;
        struct list_head        reset_notify;
+       u8                      usage;
 };
 
 struct mlx4_qp {
@@ -757,6 +764,7 @@ struct mlx4_qp {
 
        atomic_t                refcount;
        struct completion       free;
+       u8                      usage;
 };
 
 struct mlx4_srq {
@@ -1120,7 +1128,7 @@ int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt,
                  unsigned vector, int collapsed, int timestamp_en);
 void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq);
 int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
-                         int *base, u8 flags);
+                         int *base, u8 flags, u8 usage);
 void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt);
 
 int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp);
@@ -1417,7 +1425,7 @@ int mlx4_get_phys_port_id(struct mlx4_dev *dev);
 int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port);
 int mlx4_wol_write(struct mlx4_dev *dev, u64 config, int port);
 
-int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx);
+int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx, u8 usage);
 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx);
 int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port);