cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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nfp_net_repr.h (3107B)

      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[];
     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 */