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 */