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IB/mlx4: Add RoCE/IB dedicated counters

Browse Source 
This is an infrastructure step to attach all the QPs opened from the
IB driver to a counter in order to collect VF stats from the PF using
those counters.

If the port's type is Ethernet, the counter policy demands two counters
per port (one for RoCE and one for Ethernet). The port default counter
(allocated in mlx4_core) is used for the Ethernet netdev QPs and we
allocate another counter for RoCE.

If the port's traffic is Infiniband, the counter policy demands
one counter per port, so it can use the port's default counter.

Also, Add 'allocated' flag for each counter in order to clean it at
unload.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eran Ben Elisha 2015-06-15 17:59:03 +03:00 committed by David S. Miller
parent 6de5f7f6a1
commit c3abb51bdb
4 changed files with 39 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/hw/mlx4/mad.c
View File

@ -831,7 +831,7 @@ static int iboe_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_ib_dev *dev = to_mdev(ibdev);
int err;
u32 inmod = dev->counters[port_num - 1] & 0xffff;
u32 inmod = dev->counters[port_num - 1].index & 0xffff;
u8 mode;
if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT)

43
drivers/infiniband/hw/mlx4/main.c
View File

@ -2098,6 +2098,8 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
struct mlx4_ib_iboe *iboe;
int ib_num_ports = 0;
int num_req_counters;
int allocated;
u32 counter_index;
pr_info_once("%s", mlx4_ib_version);
@ -2263,19 +2265,31 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports;
for (i = 0; i < num_req_counters; ++i) {
mutex_init(&ibdev->qp1_proxy_lock[i]);
allocated = 0;
if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
IB_LINK_LAYER_ETHERNET) {
err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
err = mlx4_counter_alloc(ibdev->dev, &counter_index);
/* if failed to allocate a new counter, use default */
if (err)
ibdev->counters[i] = -1;
} else {
ibdev->counters[i] = -1;
counter_index =
mlx4_get_default_counter_index(dev,
i + 1);
else
allocated = 1;
} else { /* IB_LINK_LAYER_INFINIBAND use the default counter */
counter_index = mlx4_get_default_counter_index(dev,
i + 1);
}
ibdev->counters[i].index = counter_index;
ibdev->counters[i].allocated = allocated;
pr_info("counter index %d for port %d allocated %d\n",
counter_index, i + 1, allocated);
}
if (mlx4_is_bonded(dev))
for (i = 1; i < ibdev->num_ports ; ++i)
ibdev->counters[i] = ibdev->counters[0];
for (i = 1; i < ibdev->num_ports ; ++i) {
ibdev->counters[i].index = ibdev->counters[0].index;
ibdev->counters[i].allocated = 0;
}
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
ib_num_ports++;
@ -2415,10 +2429,12 @@ err_steer_qp_release:
mlx4_qp_release_range(dev, ibdev->steer_qpn_base,
ibdev->steer_qpn_count);
err_counter:
for (; i; --i)
if (ibdev->counters[i - 1] != -1)
mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
for (i = 0; i < ibdev->num_ports; ++i) {
if (ibdev->counters[i].index != -1 &&
ibdev->counters[i].allocated)
mlx4_counter_free(ibdev->dev,
ibdev->counters[i].index);
}
err_map:
iounmap(ibdev->uar_map);
@ -2535,8 +2551,9 @@ static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
iounmap(ibdev->uar_map);
for (p = 0; p < ibdev->num_ports; ++p)
if (ibdev->counters[p] != -1)
mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
if (ibdev->counters[p].index != -1 &&
ibdev->counters[p].allocated)
mlx4_counter_free(ibdev->dev, ibdev->counters[p].index);
mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
mlx4_CLOSE_PORT(dev, p);

7
drivers/infiniband/hw/mlx4/mlx4_ib.h
View File

@ -503,6 +503,11 @@ struct mlx4_ib_iov_port {
struct mlx4_ib_iov_sysfs_attr mcg_dentry;
};
struct counter_index {
u32 index;
u8 allocated;
};
struct mlx4_ib_dev {
struct ib_device ib_dev;
struct mlx4_dev *dev;
@ -521,7 +526,7 @@ struct mlx4_ib_dev {
struct mutex cap_mask_mutex;
bool ib_active;
struct mlx4_ib_iboe iboe;
int counters[MLX4_MAX_PORTS];
struct counter_index counters[MLX4_MAX_PORTS];
int *eq_table;
struct kobject *iov_parent;
struct kobject *ports_parent;

4
drivers/infiniband/hw/mlx4/qp.c
View File

@ -1539,9 +1539,9 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
}
if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
if (dev->counters[qp->port - 1] != -1) {
if (dev->counters[qp->port - 1].index != -1) {
context->pri_path.counter_index =
dev->counters[qp->port - 1];
dev->counters[qp->port - 1].index;
optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX;
} else
context->pri_path.counter_index =