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/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _NFP_APP_H
#define _NFP_APP_H 1
struct bpf_prog;
struct net_device;
struct pci_dev;
struct sk_buff;
struct tc_to_netdev;
struct sk_buff;
struct nfp_app;
struct nfp_cpp;
struct nfp_pf;
struct nfp_net;
enum nfp_app_id {
NFP_APP_CORE_NIC = 0x1,
NFP_APP_BPF_NIC = 0x2,
};
extern const struct nfp_app_type app_nic;
extern const struct nfp_app_type app_bpf;
/**
* struct nfp_app_type - application definition
* @id: application ID
* @name: application name
* @ctrl_has_meta: control messages have prepend of type:5/port:CTRL
*
* Callbacks
* @init: perform basic app checks
* @extra_cap: extra capabilities string
* @vnic_init: init vNICs (assign port types, etc.)
* @vnic_clean: clean up app's vNIC state
* @start: start application logic
* @stop: stop application logic
* @ctrl_msg_rx: control message handler
* @setup_tc: setup TC ndo
* @tc_busy: TC HW offload busy (rules loaded)
* @xdp_offload: offload an XDP program
*/
struct nfp_app_type {
enum nfp_app_id id;
const char *name;
bool ctrl_has_meta;
int (*init)(struct nfp_app *app);
const char *(*extra_cap)(struct nfp_app *app, struct nfp_net *nn);
int (*vnic_init)(struct nfp_app *app, struct nfp_net *nn,
unsigned int id);
void (*vnic_clean)(struct nfp_app *app, struct nfp_net *nn);
int (*start)(struct nfp_app *app);
void (*stop)(struct nfp_app *app);
void (*ctrl_msg_rx)(struct nfp_app *app, struct sk_buff *skb);
int (*setup_tc)(struct nfp_app *app, struct net_device *netdev,
u32 handle, __be16 proto, struct tc_to_netdev *tc);
bool (*tc_busy)(struct nfp_app *app, struct nfp_net *nn);
int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn,
struct bpf_prog *prog);
};
/**
* 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
* @type: pointer to const application ops and info
*/
struct nfp_app {
struct pci_dev *pdev;
struct nfp_pf *pf;
struct nfp_cpp *cpp;
struct nfp_net *ctrl;
const struct nfp_app_type *type;
};
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 int nfp_app_vnic_init(struct nfp_app *app, struct nfp_net *nn,
unsigned int id)
{
return app->type->vnic_init(app, nn, id);
}
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_start(struct nfp_app *app, struct nfp_net *ctrl)
{
app->ctrl = ctrl;
if (!app->type->start)
return 0;
return app->type->start(app);
}
static inline void nfp_app_stop(struct nfp_app *app)
{
if (!app->type->stop)
return;
app->type->stop(app);
}
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 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 bool nfp_app_tc_busy(struct nfp_app *app, struct nfp_net *nn)
{
if (!app || !app->type->tc_busy)
return false;
return app->type->tc_busy(app, nn);
}
static inline int nfp_app_setup_tc(struct nfp_app *app,
struct net_device *netdev,
u32 handle, __be16 proto,
struct tc_to_netdev *tc)
{
if (!app || !app->type->setup_tc)
return -EOPNOTSUPP;
return app->type->setup_tc(app, netdev, handle, proto, tc);
}
static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
struct bpf_prog *prog)
{
if (!app || !app->type->xdp_offload)
return -EOPNOTSUPP;
return app->type->xdp_offload(app, nn, prog);
}
static inline bool nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
{
return nfp_ctrl_tx(app->ctrl, skb);
}
static inline void nfp_app_ctrl_rx(struct nfp_app *app, struct sk_buff *skb)
{
app->type->ctrl_msg_rx(app, skb);
}
struct sk_buff *nfp_app_ctrl_msg_alloc(struct nfp_app *app, unsigned int size);
struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id);
void nfp_app_free(struct nfp_app *app);
/* Callbacks shared between apps */
int nfp_app_nic_vnic_init(struct nfp_app *app, struct nfp_net *nn,
unsigned int id);
#endif
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