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sfc: add devlink port support for ef100 

Using the data when enumerating mports, create devlink ports just before
netdevs are registered and remove those devlink ports after netdev has
been unregistered.

Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@amd.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Alejandro Lucero 2023-02-15 09:08:25 +00:00 committed by Paolo Abeni
parent 5227adff37
commit 25414b2a64
7 changed files with 156 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/ethernet/sfc/ef100_netdev.c
View File

@ -337,6 +337,7 @@ void ef100_remove_netdev(struct efx_probe_data *probe_data)
ef100_unregister_netdev(efx);
#ifdef CONFIG_SFC_SRIOV
ef100_pf_unset_devlink_port(efx);
efx_fini_tc(efx);
#endif
@ -422,6 +423,9 @@ int ef100_probe_netdev(struct efx_probe_data *probe_data)
rc = ef100_probe_netdev_pf(efx);
if (rc)
goto fail;
#ifdef CONFIG_SFC_SRIOV
ef100_pf_set_devlink_port(efx);
#endif
}
efx->netdev_notifier.notifier_call = ef100_netdev_event;
@ -432,7 +436,13 @@ int ef100_probe_netdev(struct efx_probe_data *probe_data)
goto fail;
}
efx_probe_devlink_unlock(efx);
return rc;
fail:
#ifdef CONFIG_SFC_SRIOV
/* remove devlink port if does exist */
ef100_pf_unset_devlink_port(efx);
#endif
efx_probe_devlink_unlock(efx);
return rc;
}

22
drivers/net/ethernet/sfc/ef100_rep.c
View File

@ -16,6 +16,7 @@
#include "mae.h"
#include "rx_common.h"
#include "tc_bindings.h"
#include "efx_devlink.h"
#define EFX_EF100_REP_DRIVER "efx_ef100_rep"
@ -297,6 +298,7 @@ int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i)
i, rc);
goto fail1;
}
ef100_rep_set_devlink_port(efv);
rc = register_netdev(efv->net_dev);
if (rc) {
pci_err(efx->pci_dev,
@ -308,6 +310,7 @@ int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i)
efv->net_dev->name);
return 0;
fail2:
ef100_rep_unset_devlink_port(efv);
efx_ef100_deconfigure_rep(efv);
fail1:
efx_ef100_rep_destroy_netdev(efv);
@ -323,6 +326,7 @@ void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv)
return;
netif_dbg(efx, drv, rep_dev, "Removing VF representor\n");
unregister_netdev(rep_dev);
ef100_rep_unset_devlink_port(efv);
efx_ef100_deconfigure_rep(efv);
efx_ef100_rep_destroy_netdev(efv);
}
@ -339,6 +343,24 @@ void efx_ef100_fini_vfreps(struct efx_nic *efx)
efx_ef100_vfrep_destroy(efx, efv);
}
static bool ef100_mport_is_pcie_vnic(struct mae_mport_desc *mport_desc)
{
return mport_desc->mport_type == MAE_MPORT_DESC_MPORT_TYPE_VNIC &&
mport_desc->vnic_client_type == MAE_MPORT_DESC_VNIC_CLIENT_TYPE_FUNCTION;
}
bool ef100_mport_on_local_intf(struct efx_nic *efx,
struct mae_mport_desc *mport_desc)
{
struct ef100_nic_data *nic_data = efx->nic_data;
bool pcie_func;
pcie_func = ef100_mport_is_pcie_vnic(mport_desc);
return nic_data->have_local_intf && pcie_func &&
mport_desc->interface_idx == nic_data->local_mae_intf;
}
void efx_ef100_init_reps(struct efx_nic *efx)
{
struct ef100_nic_data *nic_data = efx->nic_data;

7
drivers/net/ethernet/sfc/ef100_rep.h
View File

@ -22,6 +22,8 @@ struct efx_rep_sw_stats {
atomic64_t rx_dropped, tx_errors;
};
struct devlink_port;
/**
* struct efx_rep - Private data for an Efx representor
*
@ -39,6 +41,7 @@ struct efx_rep_sw_stats {
* @rx_lock: protects @rx_list
* @napi: NAPI control structure
* @stats: software traffic counters for netdev stats
* @dl_port: devlink port associated to this netdev representor
*/
struct efx_rep {
struct efx_nic *parent;
@ -54,6 +57,7 @@ struct efx_rep {
spinlock_t rx_lock;
struct napi_struct napi;
struct efx_rep_sw_stats stats;
struct devlink_port *dl_port;
};
int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i);
@ -69,4 +73,7 @@ struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport);
extern const struct net_device_ops efx_ef100_rep_netdev_ops;
void efx_ef100_init_reps(struct efx_nic *efx);
void efx_ef100_fini_reps(struct efx_nic *efx);
struct mae_mport_desc;
bool ef100_mport_on_local_intf(struct efx_nic *efx,
struct mae_mport_desc *mport_desc);
#endif /* EF100_REP_H */

105
drivers/net/ethernet/sfc/efx_devlink.c
View File

@ -14,11 +14,52 @@
#include "mcdi.h"
#include "mcdi_functions.h"
#include "mcdi_pcol.h"
#ifdef CONFIG_SFC_SRIOV
#include "mae.h"
#include "ef100_rep.h"
#endif
struct efx_devlink {
struct efx_nic *efx;
};
#ifdef CONFIG_SFC_SRIOV
static void efx_devlink_del_port(struct devlink_port *dl_port)
{
if (!dl_port)
return;
devl_port_unregister(dl_port);
}
static int efx_devlink_add_port(struct efx_nic *efx,
struct mae_mport_desc *mport)
{
bool external = false;
if (!ef100_mport_on_local_intf(efx, mport))
external = true;
switch (mport->mport_type) {
case MAE_MPORT_DESC_MPORT_TYPE_VNIC:
if (mport->vf_idx != MAE_MPORT_DESC_VF_IDX_NULL)
devlink_port_attrs_pci_vf_set(&mport->dl_port, 0, mport->pf_idx,
mport->vf_idx,
external);
else
devlink_port_attrs_pci_pf_set(&mport->dl_port, 0, mport->pf_idx,
external);
break;
default:
/* MAE_MPORT_DESC_MPORT_ALIAS and UNDEFINED */
return 0;
}
mport->dl_port.index = mport->mport_id;
return devl_port_register(efx->devlink, &mport->dl_port, mport->mport_id);
}
#endif
static int efx_devlink_info_nvram_partition(struct efx_nic *efx,
struct devlink_info_req *req,
unsigned int partition_type,
@ -475,6 +516,70 @@ static const struct devlink_ops sfc_devlink_ops = {
.info_get = efx_devlink_info_get,
};
#ifdef CONFIG_SFC_SRIOV
static struct devlink_port *ef100_set_devlink_port(struct efx_nic *efx, u32 idx)
{
struct mae_mport_desc *mport;
u32 id;
int rc;
if (efx_mae_lookup_mport(efx, idx, &id)) {
/* This should not happen. */
if (idx == MAE_MPORT_DESC_VF_IDX_NULL)
pci_warn_once(efx->pci_dev, "No mport ID found for PF.\n");
else
pci_warn_once(efx->pci_dev, "No mport ID found for VF %u.\n",
idx);
return NULL;
}
mport = efx_mae_get_mport(efx, id);
if (!mport) {
/* This should not happen. */
if (idx == MAE_MPORT_DESC_VF_IDX_NULL)
pci_warn_once(efx->pci_dev, "No mport found for PF.\n");
else
pci_warn_once(efx->pci_dev, "No mport found for VF %u.\n",
idx);
return NULL;
}
rc = efx_devlink_add_port(efx, mport);
if (rc) {
if (idx == MAE_MPORT_DESC_VF_IDX_NULL)
pci_warn(efx->pci_dev,
"devlink port creation for PF failed.\n");
else
pci_warn(efx->pci_dev,
"devlink_port creationg for VF %u failed.\n",
idx);
return NULL;
}
return &mport->dl_port;
}
void ef100_rep_set_devlink_port(struct efx_rep *efv)
{
efv->dl_port = ef100_set_devlink_port(efv->parent, efv->idx);
}
void ef100_pf_set_devlink_port(struct efx_nic *efx)
{
efx->dl_port = ef100_set_devlink_port(efx, MAE_MPORT_DESC_VF_IDX_NULL);
}
void ef100_rep_unset_devlink_port(struct efx_rep *efv)
{
efx_devlink_del_port(efv->dl_port);
}
void ef100_pf_unset_devlink_port(struct efx_nic *efx)
{
efx_devlink_del_port(efx->dl_port);
}
#endif
void efx_fini_devlink_lock(struct efx_nic *efx)
{
if (efx->devlink)

8
drivers/net/ethernet/sfc/efx_devlink.h
View File

@ -36,4 +36,12 @@ void efx_probe_devlink_unlock(struct efx_nic *efx);
void efx_fini_devlink_lock(struct efx_nic *efx);
void efx_fini_devlink_and_unlock(struct efx_nic *efx);
#ifdef CONFIG_SFC_SRIOV
struct efx_rep;
void ef100_pf_set_devlink_port(struct efx_nic *efx);
void ef100_rep_set_devlink_port(struct efx_rep *efv);
void ef100_pf_unset_devlink_port(struct efx_nic *efx);
void ef100_rep_unset_devlink_port(struct efx_rep *efv);
#endif
#endif /* _EFX_DEVLINK_H */

2
drivers/net/ethernet/sfc/mae.h
View File

@ -13,6 +13,7 @@
#define EF100_MAE_H
/* MCDI interface for the ef100 Match-Action Engine */
#include <net/devlink.h>
#include "net_driver.h"
#include "tc.h"
#include "mcdi_pcol.h" /* needed for various MC_CMD_MAE_*_NULL defines */
@ -43,6 +44,7 @@ struct mae_mport_desc {
};
};
struct rhash_head linkage;
struct devlink_port dl_port;
};
int efx_mae_enumerate_mports(struct efx_nic *efx);

2
drivers/net/ethernet/sfc/net_driver.h
View File

@ -998,6 +998,7 @@ struct efx_mae;
* @netdev_notifier: Netdevice notifier.
* @tc: state for TC offload (EF100).
* @devlink: reference to devlink structure owned by this device
* @dl_port: devlink port associated with the PF
* @mem_bar: The BAR that is mapped into membase.
* @reg_base: Offset from the start of the bar to the function control window.
* @monitor_work: Hardware monitor workitem
@ -1185,6 +1186,7 @@ struct efx_nic {
struct efx_tc_state *tc;
struct devlink *devlink;
struct devlink_port *dl_port;
unsigned int mem_bar;
u32 reg_base;