drivers/net/ethernet/fungible/funeth/funeth.h

   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
  33 struct 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 */
  44 struct 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
  60 static inline struct fun_ethdev *to_fun_ethdev(struct fun_dev *p)
  61 {
  62         return container_of(p, struct fun_ethdev, fdev);
  63 }
  64
  65 struct 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. */
  82 struct 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
 158 void fun_set_ethtool_ops(struct net_device *netdev);
 159 int fun_port_write_cmd(struct funeth_priv *fp, int key, u64 data);
 160 int fun_port_read_cmd(struct funeth_priv *fp, int key, u64 *data);
 161 int fun_create_and_bind_tx(struct funeth_priv *fp, u32 sqid);
 162 int fun_replace_queues(struct net_device *dev, struct fun_qset *newqs,
 163                        struct netlink_ext_ack *extack);
 164 int fun_change_num_queues(struct net_device *dev, unsigned int ntx,
 165                           unsigned int nrx);
 166 void fun_set_ring_count(struct net_device *netdev, unsigned int ntx,
 167                         unsigned int nrx);
 168 int fun_config_rss(struct net_device *dev, int algo, const u8 *key,
 169                    const u32 *qtable, u8 op);
 170
 171 #endif /* _FUNETH_H */