fungible/funeth/funeth.h

0001 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
0002
0003 #ifndef _FUNETH_H
0004 #define _FUNETH_H
0005
0006 #include <uapi/linux/if_ether.h>
0007 #include <uapi/linux/net_tstamp.h>
0008 #include <linux/mutex.h>
0009 #include <linux/seqlock.h>
0010 #include <linux/xarray.h>
0011 #include <net/devlink.h>
0012 #include "fun_dev.h"
0013
0014 #define ADMIN_SQE_SIZE SZ_128
0015 #define ADMIN_CQE_SIZE SZ_64
0016 #define ADMIN_RSP_MAX_LEN (ADMIN_CQE_SIZE - sizeof(struct fun_cqe_info))
0017
0018 #define FUN_MAX_MTU 9024
0019
0020 #define SQ_DEPTH 512U
0021 #define CQ_DEPTH 1024U
0022 #define RQ_DEPTH (512U / (PAGE_SIZE / 4096))
0023
0024 #define CQ_INTCOAL_USEC 10
0025 #define CQ_INTCOAL_NPKT 16
0026 #define SQ_INTCOAL_USEC 10
0027 #define SQ_INTCOAL_NPKT 16
0028
0029 #define INVALID_LPORT 0xffff
0030
0031 #define FUN_PORT_CAP_PAUSE_MASK (FUN_PORT_CAP_TX_PAUSE | FUN_PORT_CAP_RX_PAUSE)
0032
0033 struct fun_vport_info {
0034     u8 mac[ETH_ALEN];
0035     u16 vlan;
0036     __be16 vlan_proto;
0037     u8 qos;
0038     u8 spoofchk:1;
0039     u8 trusted:1;
0040     unsigned int max_rate;
0041 };
0042
0043 /* "subclass" of fun_dev for Ethernet functions */
0044 struct fun_ethdev {
0045     struct fun_dev fdev;
0046
0047     /* the function's network ports */
0048     struct net_device **netdevs;
0049     unsigned int num_ports;
0050
0051     /* configuration for the function's virtual ports */
0052     unsigned int num_vports;
0053     struct fun_vport_info *vport_info;
0054
0055     struct mutex state_mutex; /* nests inside RTNL if both taken */
0056
0057     unsigned int nsqs_per_port;
0058 };
0059
0060 static inline struct fun_ethdev *to_fun_ethdev(struct fun_dev *p)
0061 {
0062     return container_of(p, struct fun_ethdev, fdev);
0063 }
0064
0065 struct fun_qset {
0066     struct funeth_rxq **rxqs;
0067     struct funeth_txq **txqs;
0068     struct funeth_txq **xdpqs;
0069     unsigned int nrxqs;
0070     unsigned int ntxqs;
0071     unsigned int nxdpqs;
0072     unsigned int rxq_start;
0073     unsigned int txq_start;
0074     unsigned int xdpq_start;
0075     unsigned int cq_depth;
0076     unsigned int rq_depth;
0077     unsigned int sq_depth;
0078     int state;
0079 };
0080
0081 /* Per netdevice driver state, i.e., netdev_priv. */
0082 struct funeth_priv {
0083     struct fun_dev *fdev;
0084     struct pci_dev *pdev;
0085     struct net_device *netdev;
0086
0087     struct funeth_rxq * __rcu *rxqs;
0088     struct funeth_txq **txqs;
0089     struct funeth_txq * __rcu *xdpqs;
0090
0091     struct xarray irqs;
0092     unsigned int num_tx_irqs;
0093     unsigned int num_rx_irqs;
0094     unsigned int rx_irq_ofst;
0095
0096     unsigned int lane_attrs;
0097     u16 lport;
0098
0099     /* link settings */
0100     u64 port_caps;
0101     u64 advertising;
0102     u64 lp_advertising;
0103     unsigned int link_speed;
0104     u8 xcvr_type;
0105     u8 active_fc;
0106     u8 active_fec;
0107     u8 link_down_reason;
0108     seqcount_t link_seq;
0109
0110     u32 msg_enable;
0111
0112     unsigned int num_xdpqs;
0113
0114     /* ethtool, etc. config parameters */
0115     unsigned int sq_depth;
0116     unsigned int rq_depth;
0117     unsigned int cq_depth;
0118     unsigned int cq_irq_db;
0119     u8 tx_coal_usec;
0120     u8 tx_coal_count;
0121     u8 rx_coal_usec;
0122     u8 rx_coal_count;
0123
0124     struct hwtstamp_config hwtstamp_cfg;
0125
0126     /* cumulative queue stats from earlier queue instances */
0127     u64 tx_packets;
0128     u64 tx_bytes;
0129     u64 tx_dropped;
0130     u64 rx_packets;
0131     u64 rx_bytes;
0132     u64 rx_dropped;
0133
0134     /* RSS */
0135     unsigned int rss_hw_id;
0136     enum fun_eth_hash_alg hash_algo;
0137     u8 rss_key[FUN_ETH_RSS_MAX_KEY_SIZE];
0138     unsigned int indir_table_nentries;
0139     u32 indir_table[FUN_ETH_RSS_MAX_INDIR_ENT];
0140     dma_addr_t rss_dma_addr;
0141     void *rss_cfg;
0142
0143     /* DMA area for port stats */
0144     dma_addr_t stats_dma_addr;
0145     __be64 *stats;
0146
0147     struct bpf_prog *xdp_prog;
0148
0149     struct devlink_port dl_port;
0150
0151     /* kTLS state */
0152     unsigned int ktls_id;
0153     atomic64_t tx_tls_add;
0154     atomic64_t tx_tls_del;
0155     atomic64_t tx_tls_resync;
0156 };
0157
0158 void fun_set_ethtool_ops(struct net_device *netdev);
0159 int fun_port_write_cmd(struct funeth_priv *fp, int key, u64 data);
0160 int fun_port_read_cmd(struct funeth_priv *fp, int key, u64 *data);
0161 int fun_create_and_bind_tx(struct funeth_priv *fp, u32 sqid);
0162 int fun_replace_queues(struct net_device *dev, struct fun_qset *newqs,
0163                struct netlink_ext_ack *extack);
0164 int fun_change_num_queues(struct net_device *dev, unsigned int ntx,
0165               unsigned int nrx);
0166 void fun_set_ring_count(struct net_device *netdev, unsigned int ntx,
0167             unsigned int nrx);
0168 int fun_config_rss(struct net_device *dev, int algo, const u8 *key,
0169            const u32 *qtable, u8 op);
0170
0171 #endif /* _FUNETH_H */