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/debugfs.h>
17 #include <linux/device.h>
18 #include <linux/ethtool.h>
19 #include <linux/kernel.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <linux/u64_stats_sync.h>
23 #include <net/devlink.h>
24 #include <net/udp_tunnel.h>
27 #define DRV_NAME "netdevsim"
29 #define NSIM_XDP_MAX_MTU 4000
31 #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
33 #define NSIM_IPSEC_MAX_SA_COUNT 33
34 #define NSIM_IPSEC_VALID BIT(31)
35 #define NSIM_UDP_TUNNEL_N_PORTS 4
38 struct xfrm_state *xs;
48 struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT];
55 struct nsim_ethtool_pauseparam {
65 struct nsim_ethtool_pauseparam pauseparam;
66 struct ethtool_coalesce coalesce;
67 struct ethtool_ringparam ring;
68 struct ethtool_fecparam fec;
72 struct net_device *netdev;
73 struct nsim_dev *nsim_dev;
74 struct nsim_dev_port *nsim_dev_port;
78 struct u64_stats_sync syncp;
80 struct nsim_bus_dev *nsim_bus_dev;
82 struct bpf_prog *bpf_offloaded;
85 struct xdp_attachment_info xdp;
86 struct xdp_attachment_info xdp_hw;
89 bool bpf_tc_non_bound_accept;
90 bool bpf_xdpdrv_accept;
91 bool bpf_xdpoffload_accept;
94 struct nsim_ipsec ipsec;
98 u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS];
99 u32 (*ports)[NSIM_UDP_TUNNEL_N_PORTS];
100 struct debugfs_u32_array dfs_ports[2];
103 struct nsim_ethtool ethtool;
107 nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port);
108 void nsim_destroy(struct netdevsim *ns);
110 void nsim_ethtool_init(struct netdevsim *ns);
112 void nsim_udp_tunnels_debugfs_create(struct nsim_dev *nsim_dev);
113 int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev,
114 struct net_device *dev);
115 void nsim_udp_tunnels_info_destroy(struct net_device *dev);
117 #ifdef CONFIG_BPF_SYSCALL
118 int nsim_bpf_dev_init(struct nsim_dev *nsim_dev);
119 void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev);
120 int nsim_bpf_init(struct netdevsim *ns);
121 void nsim_bpf_uninit(struct netdevsim *ns);
122 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
123 int nsim_bpf_disable_tc(struct netdevsim *ns);
124 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
125 void *type_data, void *cb_priv);
128 static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev)
133 static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev)
136 static inline int nsim_bpf_init(struct netdevsim *ns)
141 static inline void nsim_bpf_uninit(struct netdevsim *ns)
145 static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
150 static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
156 nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
163 enum nsim_resource_id {
164 NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */
166 NSIM_RESOURCE_IPV4_FIB,
167 NSIM_RESOURCE_IPV4_FIB_RULES,
169 NSIM_RESOURCE_IPV6_FIB,
170 NSIM_RESOURCE_IPV6_FIB_RULES,
171 NSIM_RESOURCE_NEXTHOPS,
174 struct nsim_dev_health {
175 struct devlink_health_reporter *empty_reporter;
176 struct devlink_health_reporter *dummy_reporter;
178 char *recovered_break_msg;
183 int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink);
184 void nsim_dev_health_exit(struct nsim_dev *nsim_dev);
186 #if IS_ENABLED(CONFIG_PSAMPLE)
187 int nsim_dev_psample_init(struct nsim_dev *nsim_dev);
188 void nsim_dev_psample_exit(struct nsim_dev *nsim_dev);
190 static inline int nsim_dev_psample_init(struct nsim_dev *nsim_dev)
195 static inline void nsim_dev_psample_exit(struct nsim_dev *nsim_dev)
200 struct nsim_dev_port {
201 struct list_head list;
202 struct devlink_port devlink_port;
203 unsigned int port_index;
205 struct netdevsim *ns;
209 struct nsim_bus_dev *nsim_bus_dev;
210 struct nsim_fib_data *fib_data;
211 struct nsim_trap_data *trap_data;
213 struct dentry *ports_ddir;
214 struct dentry *take_snapshot;
215 struct bpf_offload_dev *bpf_dev;
216 bool bpf_bind_accept;
217 bool bpf_bind_verifier_accept;
218 u32 bpf_bind_verifier_delay;
219 struct dentry *ddir_bpf_bound_progs;
221 struct list_head bpf_bound_progs;
222 struct list_head bpf_bound_maps;
223 struct netdev_phys_item_id switch_id;
224 struct list_head port_list;
225 struct mutex port_list_lock; /* protects port list */
226 bool fw_update_status;
227 u32 fw_update_overwrite_mask;
230 bool dont_allow_reload;
232 struct devlink_region *dummy_region;
233 struct nsim_dev_health health;
234 struct flow_action_cookie *fa_cookie;
235 spinlock_t fa_cookie_lock; /* protects fa_cookie */
236 bool fail_trap_group_set;
237 bool fail_trap_policer_set;
238 bool fail_trap_policer_counter_get;
240 struct udp_tunnel_nic_shared utn_shared;
241 u32 __ports[2][NSIM_UDP_TUNNEL_N_PORTS];
246 bool static_iana_vxlan;
249 struct nsim_dev_psample *psample;
252 static inline struct net *nsim_dev_net(struct nsim_dev *nsim_dev)
254 return devlink_net(priv_to_devlink(nsim_dev));
257 int nsim_dev_init(void);
258 void nsim_dev_exit(void);
259 int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev);
260 void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev);
261 int nsim_dev_port_add(struct nsim_bus_dev *nsim_bus_dev,
262 unsigned int port_index);
263 int nsim_dev_port_del(struct nsim_bus_dev *nsim_bus_dev,
264 unsigned int port_index);
266 struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
267 struct netlink_ext_ack *extack);
268 void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *fib_data);
269 u64 nsim_fib_get_val(struct nsim_fib_data *fib_data,
270 enum nsim_resource_id res_id, bool max);
272 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
273 void nsim_ipsec_init(struct netdevsim *ns);
274 void nsim_ipsec_teardown(struct netdevsim *ns);
275 bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb);
277 static inline void nsim_ipsec_init(struct netdevsim *ns)
281 static inline void nsim_ipsec_teardown(struct netdevsim *ns)
285 static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
291 struct nsim_vf_config {
299 bool spoofchk_enabled;
301 bool rss_query_enabled;
304 struct nsim_bus_dev {
306 struct list_head list;
307 unsigned int port_count;
308 struct net *initial_net; /* Purpose of this is to carry net pointer
309 * during the probe time only.
311 unsigned int num_vfs;
312 struct nsim_vf_config *vfconfigs;
313 /* Lock for devlink->reload_enabled in netdevsim module */
314 struct mutex nsim_bus_reload_lock;
318 int nsim_bus_init(void);
319 void nsim_bus_exit(void);