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[0];
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
nfp_netdev_is_nfp_repr(struct net_device * netdev)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
nfp_repr_get_port_id(struct net_device * netdev)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
nfp_repr_alloc(struct nfp_app * app)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 */
115
