drivers/net/ethernet/netronome/nfp/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
   7 struct metadata_dst;
   8 struct nfp_app;
   9 struct nfp_net;
  10 struct 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  */
  19 struct 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  */
  33 struct 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  */
  51 struct 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  */
  67 enum 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
  76 extern const struct net_device_ops nfp_repr_netdev_ops;
  77
  78 static inline bool nfp_netdev_is_nfp_repr(struct net_device *netdev)
  79 {
  80         return netdev->netdev_ops == &nfp_repr_netdev_ops;
  81 }
  82
  83 static 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
  90 struct net_device *
  91 nfp_repr_get_locked(struct nfp_app *app, struct nfp_reprs *set,
  92                     unsigned int id);
  93
  94 void nfp_repr_inc_rx_stats(struct net_device *netdev, unsigned int len);
  95 void
  96 nfp_repr_transfer_features(struct net_device *netdev, struct net_device *lower);
  97 int 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);
 100 void nfp_repr_free(struct net_device *netdev);
 101 struct net_device *
 102 nfp_repr_alloc_mqs(struct nfp_app *app, unsigned int txqs, unsigned int rxqs);
 103 void nfp_repr_clean_and_free(struct nfp_repr *repr);
 104 void nfp_reprs_clean_and_free(struct nfp_app *app, struct nfp_reprs *reprs);
 105 void nfp_reprs_clean_and_free_by_type(struct nfp_app *app,
 106                                       enum nfp_repr_type type);
 107 struct nfp_reprs *nfp_reprs_alloc(unsigned int num_reprs);
 108 int nfp_reprs_resync_phys_ports(struct nfp_app *app);
 109
 110 static 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 */