2 * Copyright (C) 2017 Netronome Systems, Inc.
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
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.
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>
23 #define DRV_NAME "netdevsim"
25 #define NSIM_XDP_MAX_MTU 4000
27 #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
30 struct bpf_offload_dev;
32 struct nsim_vf_config;
34 struct netdevsim_shared_dev {
40 struct bpf_offload_dev *bpf_dev;
42 struct dentry *ddir_bpf_bound_progs;
45 struct list_head bpf_bound_progs;
46 struct list_head bpf_bound_maps;
49 #define NSIM_IPSEC_MAX_SA_COUNT 33
50 #define NSIM_IPSEC_VALID BIT(31)
53 struct xfrm_state *xs;
63 struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT];
71 struct net_device *netdev;
75 struct u64_stats_sync syncp;
78 struct netdevsim_shared_dev *sdev;
83 struct nsim_vf_config *vfconfigs;
85 struct bpf_prog *bpf_offloaded;
88 struct xdp_attachment_info xdp;
89 struct xdp_attachment_info xdp_hw;
92 u32 bpf_bind_verifier_delay;
95 bool bpf_tc_non_bound_accept;
96 bool bpf_xdpdrv_accept;
97 bool bpf_xdpoffload_accept;
100 #if IS_ENABLED(CONFIG_NET_DEVLINK)
101 struct devlink *devlink;
103 struct nsim_ipsec ipsec;
106 #ifdef CONFIG_BPF_SYSCALL
107 int nsim_bpf_init(struct netdevsim *ns);
108 void nsim_bpf_uninit(struct netdevsim *ns);
109 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
110 int nsim_bpf_disable_tc(struct netdevsim *ns);
111 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
112 void *type_data, void *cb_priv);
114 static inline int nsim_bpf_init(struct netdevsim *ns)
119 static inline void nsim_bpf_uninit(struct netdevsim *ns)
123 static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
125 return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
128 static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
134 nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
141 #if IS_ENABLED(CONFIG_NET_DEVLINK)
142 enum nsim_resource_id {
143 NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */
145 NSIM_RESOURCE_IPV4_FIB,
146 NSIM_RESOURCE_IPV4_FIB_RULES,
148 NSIM_RESOURCE_IPV6_FIB,
149 NSIM_RESOURCE_IPV6_FIB_RULES,
152 int nsim_devlink_setup(struct netdevsim *ns);
153 void nsim_devlink_teardown(struct netdevsim *ns);
155 int nsim_devlink_init(void);
156 void nsim_devlink_exit(void);
158 int nsim_fib_init(void);
159 void nsim_fib_exit(void);
160 u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max);
161 int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val,
162 struct netlink_ext_ack *extack);
164 static inline int nsim_devlink_setup(struct netdevsim *ns)
169 static inline void nsim_devlink_teardown(struct netdevsim *ns)
173 static inline int nsim_devlink_init(void)
178 static inline void nsim_devlink_exit(void)
183 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
184 void nsim_ipsec_init(struct netdevsim *ns);
185 void nsim_ipsec_teardown(struct netdevsim *ns);
186 bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb);
188 static inline void nsim_ipsec_init(struct netdevsim *ns)
192 static inline void nsim_ipsec_teardown(struct netdevsim *ns)
196 static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
202 static inline struct netdevsim *to_nsim(struct device *ptr)
204 return container_of(ptr, struct netdevsim, dev);