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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funeth.h (3947B)

      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 */