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
  28 struct bpf_prog;
  29 struct dentry;
  30 struct nsim_vf_config;
  31
  32 struct 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
  69 extern struct dentry *nsim_ddir;
  70
  71 #ifdef CONFIG_BPF_SYSCALL
  72 int nsim_bpf_init(struct netdevsim *ns);
  73 void nsim_bpf_uninit(struct netdevsim *ns);
  74 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
  75 int nsim_bpf_disable_tc(struct netdevsim *ns);
  76 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
  77                                void *type_data, void *cb_priv);
  78 #else
  79 static inline int nsim_bpf_init(struct netdevsim *ns)
  80 {
  81         return 0;
  82 }
  83
  84 static inline void nsim_bpf_uninit(struct netdevsim *ns)
  85 {
  86 }
  87
  88 static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
  89 {
  90         return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
  91 }
  92
  93 static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
  94 {
  95         return 0;
  96 }
  97
  98 static inline int
  99 nsim_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
 106 static inline struct netdevsim *to_nsim(struct device *ptr)
 107 {
 108         return container_of(ptr, struct netdevsim, dev);
 109 }