/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
#ifndef _NFP_APP_H
#define _NFP_APP_H 1
#include <net/devlink.h>
#include <trace/events/devlink.h>
#include "nfp_net_repr.h"
#define NFP_APP_CTRL_MTU_MAX U32_MAX
struct bpf_prog;
struct net_device;
struct netdev_bpf;
struct netlink_ext_ack;
struct pci_dev;
struct sk_buff;
struct nfp_app;
struct nfp_cpp;
struct nfp_pf;
struct nfp_repr;
struct nfp_net;
enum nfp_app_id {
NFP_APP_CORE_NIC = 0x1,
NFP_APP_BPF_NIC = 0x2,
NFP_APP_FLOWER_NIC = 0x3,
NFP_APP_ACTIVE_BUFFER_MGMT_NIC = 0x4,
};
extern const struct nfp_app_type app_nic;
extern const struct nfp_app_type app_bpf;
extern const struct nfp_app_type app_flower;
extern const struct nfp_app_type app_abm;
/**
* struct nfp_app_type - application definition
* @id: application ID
* @name: application name
* @ctrl_cap_mask: ctrl vNIC capability mask, allows disabling features like
* IRQMOD which are on by default but counter-productive for
* control messages which are often latency-sensitive
* @ctrl_has_meta: control messages have prepend of type:5/port:CTRL
*
* Callbacks
* @init: perform basic app checks and init
* @clean: clean app state
* @extra_cap: extra capabilities string
* @ndo_init: vNIC and repr netdev .ndo_init
* @ndo_uninit: vNIC and repr netdev .ndo_unint
* @vnic_alloc: allocate vNICs (assign port types, etc.)
* @vnic_free: free up app's vNIC state
* @vnic_init: vNIC netdev was registered
* @vnic_clean: vNIC netdev about to be unregistered
* @repr_init: representor about to be registered
* @repr_preclean: representor about to unregistered, executed before app
* reference to the it is removed
* @repr_clean: representor about to be unregistered
* @repr_open: representor netdev open callback
* @repr_stop: representor netdev stop callback
* @check_mtu: MTU change request on a netdev (verify it is valid)
* @repr_change_mtu: MTU change request on repr (make and verify change)
* @port_get_stats: get extra ethtool statistics for a port
* @port_get_stats_count: get count of extra statistics for a port
* @port_get_stats_strings: get strings for extra statistics
* @start: start application logic
* @stop: stop application logic
* @netdev_event: Netdevice notifier event
* @ctrl_msg_rx: control message handler
* @ctrl_msg_rx_raw: handler for control messages from data queues
* @setup_tc: setup TC ndo
* @bpf: BPF ndo offload-related calls
* @xdp_offload: offload an XDP program
* @eswitch_mode_get: get SR-IOV eswitch mode
* @eswitch_mode_set: set SR-IOV eswitch mode
* @sriov_enable: app-specific sriov initialisation
* @sriov_disable: app-specific sriov clean-up
* @dev_get: get representor or internal port representing netdev
*/
struct nfp_app_type {
enum nfp_app_id id;
const char *name;
u32 ctrl_cap_mask;
bool ctrl_has_meta;
int (*init)(struct nfp_app *app);
void (*clean)(struct nfp_app *app);
const char *(*extra_cap)(struct nfp_app *app, struct nfp_net *nn);
int (*ndo_init)(struct nfp_app *app, struct net_device *netdev);
void (*ndo_uninit)(struct nfp_app *app, struct net_device *netdev);
int (*vnic_alloc)(struct nfp_app *app, struct nfp_net *nn,
unsigned int id);
void (*vnic_free)(struct nfp_app *app, struct nfp_net *nn);
int (*vnic_init)(struct nfp_app *app, struct nfp_net *nn);
void (*vnic_clean)(struct nfp_app *app, struct nfp_net *nn);
int (*repr_init)(struct nfp_app *app, struct net_device *netdev);
void (*repr_preclean)(struct nfp_app *app, struct net_device *netdev);
void (*repr_clean)(struct nfp_app *app, struct net_device *netdev);
int (*repr_open)(struct nfp_app *app, struct nfp_repr *repr);
int (*repr_stop)(struct nfp_app *app, struct nfp_repr *repr);
int (*check_mtu)(struct nfp_app *app, struct net_device *netdev,
int new_mtu);
int (*repr_change_mtu)(struct nfp_app *app, struct net_device *netdev,
int new_mtu);
u64 *(*port_get_stats)(struct nfp_app *app,
struct nfp_port *port, u64 *data);
int (*port_get_stats_count)(struct nfp_app *app, struct nfp_port *port);
u8 *(*port_get_stats_strings)(struct nfp_app *app,
struct nfp_port *port, u8 *data);
int (*start)(struct nfp_app *app);
void (*stop)(struct nfp_app *app);
int (*netdev_event)(struct nfp_app *app, struct net_device *netdev,
unsigned long event, void *ptr);
void (*ctrl_msg_rx)(struct nfp_app *app, struct sk_buff *skb);
void (*ctrl_msg_rx_raw)(struct nfp_app *app, const void *data,
unsigned int len);
int (*setup_tc)(struct nfp_app *app, struct net_device *netdev,
enum tc_setup_type type, void *type_data);
int (*bpf)(struct nfp_app *app, struct nfp_net *nn,
struct netdev_bpf *xdp);
int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn,
struct bpf_prog *prog,
struct netlink_ext_ack *extack);
int (*sriov_enable)(struct nfp_app *app, int num_vfs);
void (*sriov_disable)(struct nfp_app *app);
enum devlink_eswitch_mode (*eswitch_mode_get)(struct nfp_app *app);
int (*eswitch_mode_set)(struct nfp_app *app, u16 mode);
struct net_device *(*dev_get)(struct nfp_app *app, u32 id,
bool *redir_egress);
};
/**
* struct nfp_app - NFP application container
* @pdev: backpointer to PCI device
* @pf: backpointer to NFP PF structure
* @cpp: pointer to the CPP handle
* @ctrl: pointer to ctrl vNIC struct
* @reprs: array of pointers to representors
* @type: pointer to const application ops and info
* @ctrl_mtu: MTU to set on the control vNIC (set in .init())
* @netdev_nb: Netdevice notifier block
* @priv: app-specific priv data
*/
struct nfp_app {
struct pci_dev *pdev;
struct nfp_pf *pf;
struct nfp_cpp *cpp;
struct nfp_net *ctrl;
struct nfp_reprs __rcu *reprs[NFP_REPR_TYPE_MAX + 1];
const struct nfp_app_type *type;
unsigned int ctrl_mtu;
struct notifier_block netdev_nb;
void *priv;
};
static inline void assert_nfp_app_locked(struct nfp_app *app)
{
devl_assert_locked(priv_to_devlink(app->pf));
}
static inline bool nfp_app_is_locked(struct nfp_app *app)
{
return devl_lock_is_held(priv_to_devlink(app->pf));
}
void nfp_check_rhashtable_empty(void *ptr, void *arg);
bool __nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb);
bool nfp_ctrl_tx(struct nfp_net *nn, struct sk_buff *skb);
static inline int nfp_app_init(struct nfp_app *app)
{
if (!app->type->init)
return 0;
return app->type->init(app);
}
static inline void nfp_app_clean(struct nfp_app *app)
{
if (app->type->clean)
app->type->clean(app);
}
int nfp_app_ndo_init(struct net_device *netdev);
void nfp_app_ndo_uninit(struct net_device *netdev);
static inline int nfp_app_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
unsigned int id)
{
return app->type->vnic_alloc(app, nn, id);
}
static inline void nfp_app_vnic_free(struct nfp_app *app, struct nfp_net *nn)
{
if (app->type->vnic_free)
app->type->vnic_free(app, nn);
}
static inline int nfp_app_vnic_init(struct nfp_app *app, struct nfp_net *nn)
{
if (!app->type->vnic_init)
return 0;
return app->type->vnic_init(app, nn);
}
static inline void nfp_app_vnic_clean(struct nfp_app *app, struct nfp_net *nn)
{
if (app->type->vnic_clean)
app->type->vnic_clean(app, nn);
}
static inline int nfp_app_repr_open(struct nfp_app *app, struct nfp_repr *repr)
{
if (!app->type->repr_open)
return -EINVAL;
return app->type->repr_open(app, repr);
}
static inline int nfp_app_repr_stop(struct nfp_app *app, struct nfp_repr *repr)
{
if (!app->type->repr_stop)
return -EINVAL;
return app->type->repr_stop(app, repr);
}
static inline int
nfp_app_repr_init(struct nfp_app *app, struct net_device *netdev)
{
if (!app->type->repr_init)
return 0;
return app->type->repr_init(app, netdev);
}
static inline void
nfp_app_repr_preclean(struct nfp_app *app, struct net_device *netdev)
{
if (app->type->repr_preclean)
app->type->repr_preclean(app, netdev);
}
static inline void
nfp_app_repr_clean(struct nfp_app *app, struct net_device *netdev)
{
if (app->type->repr_clean)
app->type->repr_clean(app, netdev);
}
static inline int
nfp_app_check_mtu(struct nfp_app *app, struct net_device *netdev, int new_mtu)
{
if (!app || !app->type->check_mtu)
return 0;
return app->type->check_mtu(app, netdev, new_mtu);
}
static inline int
nfp_app_repr_change_mtu(struct nfp_app *app, struct net_device *netdev,
int new_mtu)
{
if (!app || !app->type->repr_change_mtu)
return 0;
return app->type->repr_change_mtu(app, netdev, new_mtu);
}
static inline const char *nfp_app_name(struct nfp_app *app)
{
if (!app)
return "";
return app->type->name;
}
static inline bool nfp_app_needs_ctrl_vnic(struct nfp_app *app)
{
return app && app->type->ctrl_msg_rx;
}
static inline bool nfp_app_ctrl_has_meta(struct nfp_app *app)
{
return app->type->ctrl_has_meta;
}
static inline bool nfp_app_ctrl_uses_data_vnics(struct nfp_app *app)
{
return app && app->type->ctrl_msg_rx_raw;
}
static inline const char *nfp_app_extra_cap(struct nfp_app *app,
struct nfp_net *nn)
{
if (!app || !app->type->extra_cap)
return "";
return app->type->extra_cap(app, nn);
}
static inline bool nfp_app_has_tc(struct nfp_app *app)
{
return app && app->type->setup_tc;
}
static inline int nfp_app_setup_tc(struct nfp_app *app,
struct net_device *netdev,
enum tc_setup_type type, void *type_data)
{
if (!app || !app->type->setup_tc)
return -EOPNOTSUPP;
return app->type->setup_tc(app, netdev, type, type_data);
}
static inline int nfp_app_bpf(struct nfp_app *app, struct nfp_net *nn,
struct netdev_bpf *bpf)
{
if (!app || !app->type->bpf)
return -EINVAL;
return app->type->bpf(app, nn, bpf);
}
static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
struct bpf_prog *prog,
struct netlink_ext_ack *extack)
{
if (!app || !app->type->xdp_offload)
return -EOPNOTSUPP;
return app->type->xdp_offload(app, nn, prog, extack);
}
static inline bool __nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
{
trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0,
skb->data, skb->len);
return __nfp_ctrl_tx(app->ctrl, skb);
}
static inline bool nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
{
trace_devlink_hwmsg(priv_to_devlink(app->pf), false, 0,
skb->data, skb->len);
return nfp_ctrl_tx(app->ctrl, skb);
}
static inline void nfp_app_ctrl_rx(struct nfp_app *app, struct sk_buff *skb)
{
trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0,
skb->data, skb->len);
app->type->ctrl_msg_rx(app, skb);
}
static inline void
nfp_app_ctrl_rx_raw(struct nfp_app *app, const void *data, unsigned int len)
{
if (!app || !app->type->ctrl_msg_rx_raw)
return;
trace_devlink_hwmsg(priv_to_devlink(app->pf), true, 0, data, len);
app->type->ctrl_msg_rx_raw(app, data, len);
}
static inline int nfp_app_eswitch_mode_get(struct nfp_app *app, u16 *mode)
{
if (!app->type->eswitch_mode_get)
return -EOPNOTSUPP;
*mode = app->type->eswitch_mode_get(app);
return 0;
}
static inline int nfp_app_eswitch_mode_set(struct nfp_app *app, u16 mode)
{
if (!app->type->eswitch_mode_set)
return -EOPNOTSUPP;
return app->type->eswitch_mode_set(app, mode);
}
static inline int nfp_app_sriov_enable(struct nfp_app *app, int num_vfs)
{
if (!app || !app->type->sriov_enable)
return -EOPNOTSUPP;
return app->type->sriov_enable(app, num_vfs);
}
static inline void nfp_app_sriov_disable(struct nfp_app *app)
{
if (app && app->type->sriov_disable)
app->type->sriov_disable(app);
}
static inline
struct net_device *nfp_app_dev_get(struct nfp_app *app, u32 id,
bool *redir_egress)
{
if (unlikely(!app || !app->type->dev_get))
return NULL;
return app->type->dev_get(app, id, redir_egress);
}
struct nfp_app *nfp_app_from_netdev(struct net_device *netdev);
u64 *nfp_app_port_get_stats(struct nfp_port *port, u64 *data);
int nfp_app_port_get_stats_count(struct nfp_port *port);
u8 *nfp_app_port_get_stats_strings(struct nfp_port *port, u8 *data);
struct nfp_reprs *
nfp_reprs_get_locked(struct nfp_app *app, enum nfp_repr_type type);
struct nfp_reprs *
nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
struct nfp_reprs *reprs);
const char *nfp_app_mip_name(struct nfp_app *app);
struct sk_buff *
nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size, gfp_t priority);
struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id);
void nfp_app_free(struct nfp_app *app);
int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl);
void nfp_app_stop(struct nfp_app *app);
/* Callbacks shared between apps */
int nfp_app_nic_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
unsigned int id);
int nfp_app_nic_vnic_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
struct nfp_net *nn, unsigned int id);
#endif
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