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 */
115