1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2
3#ifndef _FUNETH_H
4#define _FUNETH_H
5
6#include <uapi/linux/if_ether.h>
7#include <uapi/linux/net_tstamp.h>
8#include <linux/mutex.h>
9#include <linux/seqlock.h>
10#include <linux/xarray.h>
11#include <net/devlink.h>
12#include "fun_dev.h"
13
14#define ADMIN_SQE_SIZE SZ_128
15#define ADMIN_CQE_SIZE SZ_64
16#define ADMIN_RSP_MAX_LEN (ADMIN_CQE_SIZE - sizeof(struct fun_cqe_info))
17
18#define FUN_MAX_MTU 9024
19
20#define SQ_DEPTH 512U
21#define CQ_DEPTH 1024U
22#define RQ_DEPTH (512U / (PAGE_SIZE / 4096))
23
24#define CQ_INTCOAL_USEC 10
25#define CQ_INTCOAL_NPKT 16
26#define SQ_INTCOAL_USEC 10
27#define SQ_INTCOAL_NPKT 16
28
29#define INVALID_LPORT 0xffff
30
31#define FUN_PORT_CAP_PAUSE_MASK (FUN_PORT_CAP_TX_PAUSE | FUN_PORT_CAP_RX_PAUSE)
32
33struct fun_vport_info {
34	u8 mac[ETH_ALEN];
35	u16 vlan;
36	__be16 vlan_proto;
37	u8 qos;
38	u8 spoofchk:1;
39	u8 trusted:1;
40	unsigned int max_rate;
41};
42
43/* "subclass" of fun_dev for Ethernet functions */
44struct fun_ethdev {
45	struct fun_dev fdev;
46
47	/* the function's network ports */
48	struct net_device **netdevs;
49	unsigned int num_ports;
50
51	/* configuration for the function's virtual ports */
52	unsigned int num_vports;
53	struct fun_vport_info *vport_info;
54
55	struct mutex state_mutex; /* nests inside RTNL if both taken */
56
57	unsigned int nsqs_per_port;
58};
59
60static inline struct fun_ethdev *to_fun_ethdev(struct fun_dev *p)
61{
62	return container_of(p, struct fun_ethdev, fdev);
63}
64
65struct fun_qset {
66	struct funeth_rxq **rxqs;
67	struct funeth_txq **txqs;
68	struct funeth_txq **xdpqs;
69	unsigned int nrxqs;
70	unsigned int ntxqs;
71	unsigned int nxdpqs;
72	unsigned int rxq_start;
73	unsigned int txq_start;
74	unsigned int xdpq_start;
75	unsigned int cq_depth;
76	unsigned int rq_depth;
77	unsigned int sq_depth;
78	int state;
79};
80
81/* Per netdevice driver state, i.e., netdev_priv. */
82struct funeth_priv {
83	struct fun_dev *fdev;
84	struct pci_dev *pdev;
85	struct net_device *netdev;
86
87	struct funeth_rxq * __rcu *rxqs;
88	struct funeth_txq **txqs;
89	struct funeth_txq * __rcu *xdpqs;
90
91	struct xarray irqs;
92	unsigned int num_tx_irqs;
93	unsigned int num_rx_irqs;
94	unsigned int rx_irq_ofst;
95
96	unsigned int lane_attrs;
97	u16 lport;
98
99	/* link settings */
100	u64 port_caps;
101	u64 advertising;
102	u64 lp_advertising;
103	unsigned int link_speed;
104	u8 xcvr_type;
105	u8 active_fc;
106	u8 active_fec;
107	u8 link_down_reason;
108	seqcount_t link_seq;
109
110	u32 msg_enable;
111
112	unsigned int num_xdpqs;
113
114	/* ethtool, etc. config parameters */
115	unsigned int sq_depth;
116	unsigned int rq_depth;
117	unsigned int cq_depth;
118	unsigned int cq_irq_db;
119	u8 tx_coal_usec;
120	u8 tx_coal_count;
121	u8 rx_coal_usec;
122	u8 rx_coal_count;
123
124	struct hwtstamp_config hwtstamp_cfg;
125
126	/* cumulative queue stats from earlier queue instances */
127	u64 tx_packets;
128	u64 tx_bytes;
129	u64 tx_dropped;
130	u64 rx_packets;
131	u64 rx_bytes;
132	u64 rx_dropped;
133
134	/* RSS */
135	unsigned int rss_hw_id;
136	enum fun_eth_hash_alg hash_algo;
137	u8 rss_key[FUN_ETH_RSS_MAX_KEY_SIZE];
138	unsigned int indir_table_nentries;
139	u32 indir_table[FUN_ETH_RSS_MAX_INDIR_ENT];
140	dma_addr_t rss_dma_addr;
141	void *rss_cfg;
142
143	/* DMA area for port stats */
144	dma_addr_t stats_dma_addr;
145	__be64 *stats;
146
147	struct bpf_prog *xdp_prog;
148
149	struct devlink_port dl_port;
150
151	/* kTLS state */
152	unsigned int ktls_id;
153	atomic64_t tx_tls_add;
154	atomic64_t tx_tls_del;
155	atomic64_t tx_tls_resync;
156};
157
158void fun_set_ethtool_ops(struct net_device *netdev);
159int fun_port_write_cmd(struct funeth_priv *fp, int key, u64 data);
160int fun_port_read_cmd(struct funeth_priv *fp, int key, u64 *data);
161int fun_create_and_bind_tx(struct funeth_priv *fp, u32 sqid);
162int fun_replace_queues(struct net_device *dev, struct fun_qset *newqs,
163		       struct netlink_ext_ack *extack);
164int fun_change_num_queues(struct net_device *dev, unsigned int ntx,
165			  unsigned int nrx);
166void fun_set_ring_count(struct net_device *netdev, unsigned int ntx,
167			unsigned int nrx);
168int fun_config_rss(struct net_device *dev, int algo, const u8 *key,
169		   const u32 *qtable, u8 op);
170
171#endif /* _FUNETH_H */
172