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>
21 #include <net/devlink.h>
24 #define DRV_NAME "netdevsim"
26 #define NSIM_XDP_MAX_MTU 4000
28 #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
30 #define NSIM_IPSEC_MAX_SA_COUNT 33
31 #define NSIM_IPSEC_VALID BIT(31)
34 struct xfrm_state *xs;
44 struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT];
52 struct net_device *netdev;
53 struct nsim_dev *nsim_dev;
54 struct nsim_dev_port *nsim_dev_port;
58 struct u64_stats_sync syncp;
60 struct nsim_bus_dev *nsim_bus_dev;
62 struct bpf_prog *bpf_offloaded;
65 struct xdp_attachment_info xdp;
66 struct xdp_attachment_info xdp_hw;
69 bool bpf_tc_non_bound_accept;
70 bool bpf_xdpdrv_accept;
71 bool bpf_xdpoffload_accept;
74 struct nsim_ipsec ipsec;
78 nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port);
79 void nsim_destroy(struct netdevsim *ns);
81 #ifdef CONFIG_BPF_SYSCALL
82 int nsim_bpf_dev_init(struct nsim_dev *nsim_dev);
83 void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev);
84 int nsim_bpf_init(struct netdevsim *ns);
85 void nsim_bpf_uninit(struct netdevsim *ns);
86 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
87 int nsim_bpf_disable_tc(struct netdevsim *ns);
88 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
89 void *type_data, void *cb_priv);
92 static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev)
97 static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev)
100 static inline int nsim_bpf_init(struct netdevsim *ns)
105 static inline void nsim_bpf_uninit(struct netdevsim *ns)
109 static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
111 return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
114 static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
120 nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
127 enum nsim_resource_id {
128 NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */
130 NSIM_RESOURCE_IPV4_FIB,
131 NSIM_RESOURCE_IPV4_FIB_RULES,
133 NSIM_RESOURCE_IPV6_FIB,
134 NSIM_RESOURCE_IPV6_FIB_RULES,
137 struct nsim_dev_health {
138 struct devlink_health_reporter *empty_reporter;
139 struct devlink_health_reporter *dummy_reporter;
141 char *recovered_break_msg;
146 int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink);
147 void nsim_dev_health_exit(struct nsim_dev *nsim_dev);
149 struct nsim_dev_port {
150 struct list_head list;
151 struct devlink_port devlink_port;
152 unsigned int port_index;
154 struct netdevsim *ns;
158 struct nsim_bus_dev *nsim_bus_dev;
159 struct nsim_fib_data *fib_data;
160 struct nsim_trap_data *trap_data;
162 struct dentry *ports_ddir;
163 struct dentry *take_snapshot;
164 struct bpf_offload_dev *bpf_dev;
165 bool bpf_bind_accept;
166 u32 bpf_bind_verifier_delay;
167 struct dentry *ddir_bpf_bound_progs;
169 struct list_head bpf_bound_progs;
170 struct list_head bpf_bound_maps;
171 struct netdev_phys_item_id switch_id;
172 struct list_head port_list;
173 struct mutex port_list_lock; /* protects port list */
174 bool fw_update_status;
177 bool dont_allow_reload;
179 struct devlink_region *dummy_region;
180 struct nsim_dev_health health;
183 static inline struct net *nsim_dev_net(struct nsim_dev *nsim_dev)
185 return devlink_net(priv_to_devlink(nsim_dev));
188 int nsim_dev_init(void);
189 void nsim_dev_exit(void);
190 int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev);
191 void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev);
192 int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev,
193 unsigned int port_index);
194 int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev,
195 unsigned int port_index);
197 struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
198 struct netlink_ext_ack *extack);
199 void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *fib_data);
200 u64 nsim_fib_get_val(struct nsim_fib_data *fib_data,
201 enum nsim_resource_id res_id, bool max);
203 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
204 void nsim_ipsec_init(struct netdevsim *ns);
205 void nsim_ipsec_teardown(struct netdevsim *ns);
206 bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb);
208 static inline void nsim_ipsec_init(struct netdevsim *ns)
212 static inline void nsim_ipsec_teardown(struct netdevsim *ns)
216 static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
222 struct nsim_vf_config {
230 bool spoofchk_enabled;
232 bool rss_query_enabled;
235 struct nsim_bus_dev {
237 struct list_head list;
238 unsigned int port_count;
239 struct net *initial_net; /* Purpose of this is to carry net pointer
240 * during the probe time only.
242 unsigned int num_vfs;
243 struct nsim_vf_config *vfconfigs;
244 /* Lock for devlink->reload_enabled in netdevsim module */
245 struct mutex nsim_bus_reload_lock;
249 int nsim_bus_init(void);
250 void nsim_bus_exit(void);