1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /****************************************************************************
3  * Driver for Solarflare network controllers and boards
4  * Copyright 2019 Solarflare Communications Inc.
5  * Copyright 2020-2022 Xilinx Inc.
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published
9  * by the Free Software Foundation, incorporated herein by reference.
10  */
11 
12 /* Handling for ef100 representor netdevs */
13 #ifndef EF100_REP_H
14 #define EF100_REP_H
15 
16 #include "net_driver.h"
17 #include "tc.h"
18 
19 struct efx_rep_sw_stats {
20 	atomic64_t rx_packets, tx_packets;
21 	atomic64_t rx_bytes, tx_bytes;
22 	atomic64_t rx_dropped, tx_errors;
23 };
24 
25 struct devlink_port;
26 
27 /**
28  * struct efx_rep - Private data for an Efx representor
29  *
30  * @parent: the efx PF which manages this representor
31  * @net_dev: representor netdevice
32  * @msg_enable: log message enable flags
33  * @mport: m-port ID of corresponding VF
34  * @idx: VF index
35  * @write_index: number of packets enqueued to @rx_list
36  * @read_index: number of packets consumed from @rx_list
37  * @rx_pring_size: max length of RX list
38  * @dflt: default-rule for MAE switching
39  * @list: entry on efx->vf_reps
40  * @rx_list: list of SKBs queued for receive in NAPI poll
41  * @rx_lock: protects @rx_list
42  * @napi: NAPI control structure
43  * @stats: software traffic counters for netdev stats
44  * @dl_port: devlink port associated to this netdev representor
45  */
46 struct efx_rep {
47 	struct efx_nic *parent;
48 	struct net_device *net_dev;
49 	u32 msg_enable;
50 	u32 mport;
51 	unsigned int idx;
52 	unsigned int write_index, read_index;
53 	unsigned int rx_pring_size;
54 	struct efx_tc_flow_rule dflt;
55 	struct list_head list;
56 	struct list_head rx_list;
57 	spinlock_t rx_lock;
58 	struct napi_struct napi;
59 	struct efx_rep_sw_stats stats;
60 	struct devlink_port *dl_port;
61 };
62 
63 int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i);
64 void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv);
65 void efx_ef100_fini_vfreps(struct efx_nic *efx);
66 
67 void efx_ef100_rep_rx_packet(struct efx_rep *efv, struct efx_rx_buffer *rx_buf);
68 /* Returns the representor corresponding to a VF m-port, or NULL
69  * @mport is an m-port label, *not* an m-port ID!
70  * Caller must hold rcu_read_lock().
71  */
72 struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport);
73 extern const struct net_device_ops efx_ef100_rep_netdev_ops;
74 void efx_ef100_init_reps(struct efx_nic *efx);
75 void efx_ef100_fini_reps(struct efx_nic *efx);
76 struct mae_mport_desc;
77 bool ef100_mport_on_local_intf(struct efx_nic *efx,
78 			       struct mae_mport_desc *mport_desc);
79 bool ef100_mport_is_vf(struct mae_mport_desc *mport_desc);
80 #endif /* EF100_REP_H */
81