summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/netronome/nfp/nfp_app.h
blob: 5d714e10d9a947fcabded2642547aab22c3a08c4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/*
 * 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

#include <net/devlink.h>

#include "nfp_net_repr.h"

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_repr;
struct nfp_net;

enum nfp_app_id {
	NFP_APP_CORE_NIC	= 0x1,
	NFP_APP_BPF_NIC		= 0x2,
	NFP_APP_FLOWER_NIC	= 0x3,
};

extern const struct nfp_app_type app_nic;
extern const struct nfp_app_type app_bpf;
extern const struct nfp_app_type app_flower;

/**
 * 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 and init
 * @clean:	clean app state
 * @extra_cap:	extra capabilities string
 * @vnic_init:	init vNICs (assign port types, etc.)
 * @vnic_clean:	clean up app's vNIC state
 * @repr_open:	representor netdev open callback
 * @repr_stop:	representor netdev stop callback
 * @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
 * @eswitch_mode_get:    get SR-IOV eswitch mode
 * @sriov_enable: app-specific sriov initialisation
 * @sriov_disable: app-specific sriov clean-up
 * @repr_get:	get representor netdev
 */
struct nfp_app_type {
	enum nfp_app_id id;
	const char *name;

	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 (*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 (*repr_open)(struct nfp_app *app, struct nfp_repr *repr);
	int (*repr_stop)(struct nfp_app *app, struct nfp_repr *repr);

	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);

	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);
	struct net_device *(*repr_get)(struct nfp_app *app, u32 id);
};

/**
 * 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
 * @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;
	void *priv;
};

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);
}

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_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_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);
}

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_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_repr_get(struct nfp_app *app, u32 id)
{
	if (unlikely(!app || !app->type->repr_get))
		return NULL;

	return app->type->repr_get(app, id);
}

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);

/* Callbacks shared between apps */

int nfp_app_nic_vnic_init(struct nfp_app *app, struct nfp_net *nn,
			  unsigned int id);

#endif