LXR linux/drivers/net/netdevsim/netdevsim.h

   1/*
   2 * Copyright (C) 2017 Netronome Systems, Inc.
   3 *
   4 * This software is licensed under the GNU General License Version 2,
   5 * June 1991 as shown in the file COPYING in the top-level directory of this
   6 * source tree.
   7 *
   8 * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
   9 * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
  10 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  11 * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
  12 * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
  13 * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  14 */
  15
  16#include <linux/device.h>
  17#include <linux/kernel.h>
  18#include <linux/list.h>
  19#include <linux/netdevice.h>
  20#include <linux/u64_stats_sync.h>
  21
  22#define DRV_NAME        "netdevsim"
  23
  24#define NSIM_XDP_MAX_MTU        4000
  25
  26#define NSIM_EA(extack, msg)    NL_SET_ERR_MSG_MOD((extack), msg)
  27
  28struct bpf_prog;
  29struct dentry;
  30struct nsim_vf_config;
  31
  32struct netdevsim {
  33        struct net_device *netdev;
  34
  35        u64 tx_packets;
  36        u64 tx_bytes;
  37        struct u64_stats_sync syncp;
  38
  39        struct device dev;
  40
  41        struct dentry *ddir;
  42
  43        unsigned int num_vfs;
  44        struct nsim_vf_config *vfconfigs;
  45
  46        struct bpf_prog *bpf_offloaded;
  47        u32 bpf_offloaded_id;
  48
  49        u32 xdp_flags;
  50        int xdp_prog_mode;
  51        struct bpf_prog *xdp_prog;
  52
  53        u32 prog_id_gen;
  54
  55        bool bpf_bind_accept;
  56        u32 bpf_bind_verifier_delay;
  57        struct dentry *ddir_bpf_bound_progs;
  58        struct list_head bpf_bound_progs;
  59
  60        bool bpf_tc_accept;
  61        bool bpf_tc_non_bound_accept;
  62        bool bpf_xdpdrv_accept;
  63        bool bpf_xdpoffload_accept;
  64
  65        bool bpf_map_accept;
  66        struct list_head bpf_bound_maps;
  67};
  68
  69extern struct dentry *nsim_ddir;
  70
  71#ifdef CONFIG_BPF_SYSCALL
  72int nsim_bpf_init(struct netdevsim *ns);
  73void nsim_bpf_uninit(struct netdevsim *ns);
  74int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
  75int nsim_bpf_disable_tc(struct netdevsim *ns);
  76int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
  77                               void *type_data, void *cb_priv);
  78#else
  79static inline int nsim_bpf_init(struct netdevsim *ns)
  80{
  81        return 0;
  82}
  83
  84static inline void nsim_bpf_uninit(struct netdevsim *ns)
  85{
  86}
  87
  88static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
  89{
  90        return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
  91}
  92
  93static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
  94{
  95        return 0;
  96}
  97
  98static inline int
  99nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 100                           void *cb_priv)
 101{
 102        return -EOPNOTSUPP;
 103}
 104#endif
 105
 106static inline struct netdevsim *to_nsim(struct device *ptr)
 107{
 108        return container_of(ptr, struct netdevsim, dev);
 109}
 110