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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
*/
#include <linux/mlx5/vport.h>
#include "ib_rep.h"
#include "srq.h"
static int
mlx5_ib_set_vport_rep(struct mlx5_core_dev *dev,
struct mlx5_eswitch_rep *rep,
int vport_index)
{
struct mlx5_ib_dev *ibdev;
ibdev = mlx5_eswitch_uplink_get_proto_dev(dev->priv.eswitch, REP_IB);
if (!ibdev)
return -EINVAL;
ibdev->port[vport_index].rep = rep;
rep->rep_data[REP_IB].priv = ibdev;
write_lock(&ibdev->port[vport_index].roce.netdev_lock);
ibdev->port[vport_index].roce.netdev =
mlx5_ib_get_rep_netdev(rep->esw, rep->vport);
write_unlock(&ibdev->port[vport_index].roce.netdev_lock);
return 0;
}
static void mlx5_ib_register_peer_vport_reps(struct mlx5_core_dev *mdev);
static void mlx5_ib_num_ports_update(struct mlx5_core_dev *dev, u32 *num_ports)
{
struct mlx5_core_dev *peer_dev;
int i;
mlx5_lag_for_each_peer_mdev(dev, peer_dev, i) {
u32 peer_num_ports = mlx5_eswitch_get_total_vports(peer_dev);
if (mlx5_lag_is_mpesw(peer_dev))
*num_ports += peer_num_ports;
else
/* Only 1 ib port is the representor for all uplinks */
*num_ports += peer_num_ports - 1;
}
}
static int
mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
{
u32 num_ports = mlx5_eswitch_get_total_vports(dev);
struct mlx5_core_dev *lag_master = dev;
const struct mlx5_ib_profile *profile;
struct mlx5_core_dev *peer_dev;
struct mlx5_ib_dev *ibdev;
int new_uplink = false;
int vport_index;
int ret;
int i;
vport_index = rep->vport_index;
if (mlx5_lag_is_shared_fdb(dev)) {
if (mlx5_lag_is_master(dev)) {
mlx5_ib_num_ports_update(dev, &num_ports);
} else {
if (rep->vport == MLX5_VPORT_UPLINK) {
if (!mlx5_lag_is_mpesw(dev))
return 0;
new_uplink = true;
}
mlx5_lag_for_each_peer_mdev(dev, peer_dev, i) {
u32 peer_n_ports = mlx5_eswitch_get_total_vports(peer_dev);
if (mlx5_lag_is_master(peer_dev))
lag_master = peer_dev;
else if (!mlx5_lag_is_mpesw(dev))
/* Only 1 ib port is the representor for all uplinks */
peer_n_ports--;
if (mlx5_get_dev_index(peer_dev) < mlx5_get_dev_index(dev))
vport_index += peer_n_ports;
}
}
}
if (rep->vport == MLX5_VPORT_UPLINK && !new_uplink)
profile = &raw_eth_profile;
else
return mlx5_ib_set_vport_rep(lag_master, rep, vport_index);
ibdev = ib_alloc_device(mlx5_ib_dev, ib_dev);
if (!ibdev)
return -ENOMEM;
ibdev->port = kcalloc(num_ports, sizeof(*ibdev->port),
GFP_KERNEL);
if (!ibdev->port) {
ret = -ENOMEM;
goto fail_port;
}
ibdev->is_rep = true;
vport_index = rep->vport_index;
ibdev->port[vport_index].rep = rep;
ibdev->port[vport_index].roce.netdev =
mlx5_ib_get_rep_netdev(lag_master->priv.eswitch, rep->vport);
ibdev->mdev = lag_master;
ibdev->num_ports = num_ports;
ret = __mlx5_ib_add(ibdev, profile);
if (ret)
goto fail_add;
rep->rep_data[REP_IB].priv = ibdev;
if (mlx5_lag_is_shared_fdb(lag_master))
mlx5_ib_register_peer_vport_reps(lag_master);
return 0;
fail_add:
kfree(ibdev->port);
fail_port:
ib_dealloc_device(&ibdev->ib_dev);
return ret;
}
static void *mlx5_ib_rep_to_dev(struct mlx5_eswitch_rep *rep)
{
return rep->rep_data[REP_IB].priv;
}
static void
mlx5_ib_vport_rep_unload(struct mlx5_eswitch_rep *rep)
{
struct mlx5_core_dev *mdev = mlx5_eswitch_get_core_dev(rep->esw);
struct mlx5_ib_dev *dev = mlx5_ib_rep_to_dev(rep);
int vport_index = rep->vport_index;
struct mlx5_ib_port *port;
int i;
if (WARN_ON(!mdev))
return;
if (!dev)
return;
if (mlx5_lag_is_shared_fdb(mdev) &&
!mlx5_lag_is_master(mdev)) {
if (rep->vport == MLX5_VPORT_UPLINK && !mlx5_lag_is_mpesw(mdev))
return;
for (i = 0; i < dev->num_ports; i++) {
if (dev->port[i].rep == rep)
break;
}
if (WARN_ON(i == dev->num_ports))
return;
vport_index = i;
}
port = &dev->port[vport_index];
write_lock(&port->roce.netdev_lock);
port->roce.netdev = NULL;
write_unlock(&port->roce.netdev_lock);
rep->rep_data[REP_IB].priv = NULL;
port->rep = NULL;
if (rep->vport == MLX5_VPORT_UPLINK) {
if (mlx5_lag_is_shared_fdb(mdev) && !mlx5_lag_is_master(mdev))
return;
if (mlx5_lag_is_shared_fdb(mdev)) {
struct mlx5_core_dev *peer_mdev;
struct mlx5_eswitch *esw;
mlx5_lag_for_each_peer_mdev(mdev, peer_mdev, i) {
esw = peer_mdev->priv.eswitch;
mlx5_eswitch_unregister_vport_reps(esw, REP_IB);
}
}
__mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
}
}
static const struct mlx5_eswitch_rep_ops rep_ops = {
.load = mlx5_ib_vport_rep_load,
.unload = mlx5_ib_vport_rep_unload,
.get_proto_dev = mlx5_ib_rep_to_dev,
};
static void mlx5_ib_register_peer_vport_reps(struct mlx5_core_dev *mdev)
{
struct mlx5_core_dev *peer_mdev;
struct mlx5_eswitch *esw;
int i;
mlx5_lag_for_each_peer_mdev(mdev, peer_mdev, i) {
esw = peer_mdev->priv.eswitch;
mlx5_eswitch_register_vport_reps(esw, &rep_ops, REP_IB);
}
}
struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
u16 vport_num)
{
return mlx5_eswitch_get_proto_dev(esw, vport_num, REP_ETH);
}
struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
struct mlx5_ib_sq *sq,
u32 port)
{
struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
struct mlx5_eswitch_rep *rep;
if (!dev->is_rep || !port)
return NULL;
if (!dev->port[port - 1].rep)
return ERR_PTR(-EINVAL);
rep = dev->port[port - 1].rep;
return mlx5_eswitch_add_send_to_vport_rule(esw, esw, rep, sq->base.mqp.qpn);
}
static int mlx5r_rep_probe(struct auxiliary_device *adev,
const struct auxiliary_device_id *id)
{
struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev);
struct mlx5_core_dev *mdev = idev->mdev;
struct mlx5_eswitch *esw;
esw = mdev->priv.eswitch;
mlx5_eswitch_register_vport_reps(esw, &rep_ops, REP_IB);
return 0;
}
static void mlx5r_rep_remove(struct auxiliary_device *adev)
{
struct mlx5_adev *idev = container_of(adev, struct mlx5_adev, adev);
struct mlx5_core_dev *mdev = idev->mdev;
struct mlx5_eswitch *esw;
esw = mdev->priv.eswitch;
mlx5_eswitch_unregister_vport_reps(esw, REP_IB);
}
static const struct auxiliary_device_id mlx5r_rep_id_table[] = {
{ .name = MLX5_ADEV_NAME ".rdma-rep", },
{},
};
MODULE_DEVICE_TABLE(auxiliary, mlx5r_rep_id_table);
static struct auxiliary_driver mlx5r_rep_driver = {
.name = "rep",
.probe = mlx5r_rep_probe,
.remove = mlx5r_rep_remove,
.id_table = mlx5r_rep_id_table,
};
int mlx5r_rep_init(void)
{
return auxiliary_driver_register(&mlx5r_rep_driver);
}
void mlx5r_rep_cleanup(void)
{
auxiliary_driver_unregister(&mlx5r_rep_driver);
}
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