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1/*
2 * Copyright (C) 2017 Netronome Systems, Inc.
3 *
4 * This software is dual licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree or the BSD 2-Clause License provided below. You have the
7 * option to license this software under the complete terms of either license.
8 *
9 * The BSD 2-Clause License:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * 1. Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#ifndef NFP_NET_REPR_H
35#define NFP_NET_REPR_H
36
37struct metadata_dst;
38struct nfp_app;
39struct nfp_net;
40struct nfp_port;
41
42#include <net/dst_metadata.h>
43
44/**
45 * struct nfp_reprs - container for representor netdevs
46 * @num_reprs: Number of elements in reprs array
47 * @reprs: Array of representor netdevs
48 */
49struct nfp_reprs {
50 unsigned int num_reprs;
51 struct net_device __rcu *reprs[0];
52};
53
54/**
55 * struct nfp_repr_pcpu_stats
56 * @rx_packets: Received packets
57 * @rx_bytes: Received bytes
58 * @tx_packets: Transmitted packets
59 * @tx_bytes: Transmitted dropped
60 * @tx_drops: Packets dropped on transmit
61 * @syncp: Reference count
62 */
63struct nfp_repr_pcpu_stats {
64 u64 rx_packets;
65 u64 rx_bytes;
66 u64 tx_packets;
67 u64 tx_bytes;
68 u64 tx_drops;
69 struct u64_stats_sync syncp;
70};
71
72/**
73 * struct nfp_repr - priv data for representor netdevs
74 * @netdev: Back pointer to netdev
75 * @dst: Destination for packet TX
76 * @port: Port of representor
77 * @app: APP handle
78 * @stats: Statistic of packets hitting CPU
79 */
80struct nfp_repr {
81 struct net_device *netdev;
82 struct metadata_dst *dst;
83 struct nfp_port *port;
84 struct nfp_app *app;
85 struct nfp_repr_pcpu_stats __percpu *stats;
86};
87
88/**
89 * enum nfp_repr_type - type of representor
90 * @NFP_REPR_TYPE_PHYS_PORT: external NIC port
91 * @NFP_REPR_TYPE_PF: physical function
92 * @NFP_REPR_TYPE_VF: virtual function
93 * @__NFP_REPR_TYPE_MAX: number of representor types
94 */
95enum nfp_repr_type {
96 NFP_REPR_TYPE_PHYS_PORT,
97 NFP_REPR_TYPE_PF,
98 NFP_REPR_TYPE_VF,
99
100 __NFP_REPR_TYPE_MAX,
101};
102#define NFP_REPR_TYPE_MAX (__NFP_REPR_TYPE_MAX - 1)
103
104extern const struct net_device_ops nfp_repr_netdev_ops;
105
106static inline bool nfp_netdev_is_nfp_repr(struct net_device *netdev)
107{
108 return netdev->netdev_ops == &nfp_repr_netdev_ops;
109}
110
111static inline int nfp_repr_get_port_id(struct net_device *netdev)
112{
113 struct nfp_repr *priv = netdev_priv(netdev);
114
115 return priv->dst->u.port_info.port_id;
116}
117
118struct net_device *
119nfp_repr_get_locked(struct nfp_app *app, struct nfp_reprs *set,
120 unsigned int id);
121
122void nfp_repr_inc_rx_stats(struct net_device *netdev, unsigned int len);
123int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
124 u32 cmsg_port_id, struct nfp_port *port,
125 struct net_device *pf_netdev);
126struct net_device *nfp_repr_alloc(struct nfp_app *app);
127void nfp_reprs_clean_and_free(struct nfp_app *app, struct nfp_reprs *reprs);
128void nfp_reprs_clean_and_free_by_type(struct nfp_app *app,
129 enum nfp_repr_type type);
130struct nfp_reprs *nfp_reprs_alloc(unsigned int num_reprs);
131int nfp_reprs_resync_phys_ports(struct nfp_app *app);
132
133#endif /* NFP_NET_REPR_H */
1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4#ifndef NFP_NET_REPR_H
5#define NFP_NET_REPR_H
6
7struct metadata_dst;
8struct nfp_app;
9struct nfp_net;
10struct nfp_port;
11
12#include <net/dst_metadata.h>
13
14/**
15 * struct nfp_reprs - container for representor netdevs
16 * @num_reprs: Number of elements in reprs array
17 * @reprs: Array of representor netdevs
18 */
19struct nfp_reprs {
20 unsigned int num_reprs;
21 struct net_device __rcu *reprs[] __counted_by(num_reprs);
22};
23
24/**
25 * struct nfp_repr_pcpu_stats
26 * @rx_packets: Received packets
27 * @rx_bytes: Received bytes
28 * @tx_packets: Transmitted packets
29 * @tx_bytes: Transmitted dropped
30 * @tx_drops: Packets dropped on transmit
31 * @syncp: Reference count
32 */
33struct nfp_repr_pcpu_stats {
34 u64 rx_packets;
35 u64 rx_bytes;
36 u64 tx_packets;
37 u64 tx_bytes;
38 u64 tx_drops;
39 struct u64_stats_sync syncp;
40};
41
42/**
43 * struct nfp_repr - priv data for representor netdevs
44 * @netdev: Back pointer to netdev
45 * @dst: Destination for packet TX
46 * @port: Port of representor
47 * @app: APP handle
48 * @stats: Statistic of packets hitting CPU
49 * @app_priv: Pointer for APP data
50 */
51struct nfp_repr {
52 struct net_device *netdev;
53 struct metadata_dst *dst;
54 struct nfp_port *port;
55 struct nfp_app *app;
56 struct nfp_repr_pcpu_stats __percpu *stats;
57 void *app_priv;
58};
59
60/**
61 * enum nfp_repr_type - type of representor
62 * @NFP_REPR_TYPE_PHYS_PORT: external NIC port
63 * @NFP_REPR_TYPE_PF: physical function
64 * @NFP_REPR_TYPE_VF: virtual function
65 * @__NFP_REPR_TYPE_MAX: number of representor types
66 */
67enum nfp_repr_type {
68 NFP_REPR_TYPE_PHYS_PORT,
69 NFP_REPR_TYPE_PF,
70 NFP_REPR_TYPE_VF,
71
72 __NFP_REPR_TYPE_MAX,
73};
74#define NFP_REPR_TYPE_MAX (__NFP_REPR_TYPE_MAX - 1)
75
76extern const struct net_device_ops nfp_repr_netdev_ops;
77
78static inline bool nfp_netdev_is_nfp_repr(struct net_device *netdev)
79{
80 return netdev->netdev_ops == &nfp_repr_netdev_ops;
81}
82
83static inline int nfp_repr_get_port_id(struct net_device *netdev)
84{
85 struct nfp_repr *priv = netdev_priv(netdev);
86
87 return priv->dst->u.port_info.port_id;
88}
89
90struct net_device *
91nfp_repr_get_locked(struct nfp_app *app, struct nfp_reprs *set,
92 unsigned int id);
93
94void nfp_repr_inc_rx_stats(struct net_device *netdev, unsigned int len);
95void
96nfp_repr_transfer_features(struct net_device *netdev, struct net_device *lower);
97int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
98 u32 cmsg_port_id, struct nfp_port *port,
99 struct net_device *pf_netdev);
100void nfp_repr_free(struct net_device *netdev);
101struct net_device *
102nfp_repr_alloc_mqs(struct nfp_app *app, unsigned int txqs, unsigned int rxqs);
103void nfp_repr_clean_and_free(struct nfp_repr *repr);
104void nfp_reprs_clean_and_free(struct nfp_app *app, struct nfp_reprs *reprs);
105void nfp_reprs_clean_and_free_by_type(struct nfp_app *app,
106 enum nfp_repr_type type);
107struct nfp_reprs *nfp_reprs_alloc(unsigned int num_reprs);
108int nfp_reprs_resync_phys_ports(struct nfp_app *app);
109
110static inline struct net_device *nfp_repr_alloc(struct nfp_app *app)
111{
112 return nfp_repr_alloc_mqs(app, 1, 1);
113}
114#endif /* NFP_NET_REPR_H */