/* * Copyright (C) 2017 Netronome Systems, Inc. * * This software is licensed under the GNU General License Version 2, * June 1991 as shown in the file COPYING in the top-level directory of this * source tree. * * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. */ #include <linux/device.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/netdevice.h> #include <linux/u64_stats_sync.h> #define DRV_NAME "netdevsim" #define NSIM_XDP_MAX_MTU 4000 #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg) struct bpf_prog; struct dentry; struct nsim_vf_config; struct netdevsim { struct net_device *netdev; u64 tx_packets; u64 tx_bytes; struct u64_stats_sync syncp; struct device dev; struct dentry *ddir; unsigned int num_vfs; struct nsim_vf_config *vfconfigs; struct bpf_prog *bpf_offloaded; u32 bpf_offloaded_id; u32 xdp_flags; int xdp_prog_mode; struct bpf_prog *xdp_prog; u32 prog_id_gen; bool bpf_bind_accept; u32 bpf_bind_verifier_delay; struct dentry *ddir_bpf_bound_progs; struct list_head bpf_bound_progs; bool bpf_tc_accept; bool bpf_tc_non_bound_accept; bool bpf_xdpdrv_accept; bool bpf_xdpoffload_accept; bool bpf_map_accept; struct list_head bpf_bound_maps; #if IS_ENABLED(CONFIG_NET_DEVLINK) struct devlink *devlink; #endif }; extern struct dentry *nsim_ddir; #ifdef CONFIG_BPF_SYSCALL int nsim_bpf_init(struct netdevsim *ns); void nsim_bpf_uninit(struct netdevsim *ns); int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf); int nsim_bpf_disable_tc(struct netdevsim *ns); int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv); #else static inline int nsim_bpf_init(struct netdevsim *ns) { return 0; } static inline void nsim_bpf_uninit(struct netdevsim *ns) { } static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf) { return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP; } static inline int nsim_bpf_disable_tc(struct netdevsim *ns) { return 0; } static inline int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv) { return -EOPNOTSUPP; } #endif #if IS_ENABLED(CONFIG_NET_DEVLINK) enum nsim_resource_id { NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */ NSIM_RESOURCE_IPV4, NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES, NSIM_RESOURCE_IPV6, NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES, }; int nsim_devlink_setup(struct netdevsim *ns); void nsim_devlink_teardown(struct netdevsim *ns); int nsim_devlink_init(void); void nsim_devlink_exit(void); int nsim_fib_init(void); void nsim_fib_exit(void); u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max); int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val); #else static inline int nsim_devlink_setup(struct netdevsim *ns) { return 0; } static inline void nsim_devlink_teardown(struct netdevsim *ns) { } static inline int nsim_devlink_init(void) { return 0; } static inline void nsim_devlink_exit(void) { } #endif static inline struct netdevsim *to_nsim(struct device *ptr) { return container_of(ptr, struct netdevsim, dev); }