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Diffstat (limited to '')
| -rw-r--r-- | drivers/net/netdevsim/netdevsim.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h new file mode 100644 index 000000000..384c254fa --- /dev/null +++ b/drivers/net/netdevsim/netdevsim.h @@ -0,0 +1,205 @@ +/* + * 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> +#include <net/xdp.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 bpf_offload_dev; +struct dentry; +struct nsim_vf_config; + +struct netdevsim_shared_dev { + unsigned int refcnt; + u32 switch_id; + + struct dentry *ddir; + + struct bpf_offload_dev *bpf_dev; + + struct dentry *ddir_bpf_bound_progs; + u32 prog_id_gen; + + struct list_head bpf_bound_progs; + struct list_head bpf_bound_maps; +}; + +#define NSIM_IPSEC_MAX_SA_COUNT 33 +#define NSIM_IPSEC_VALID BIT(31) + +struct nsim_sa { + struct xfrm_state *xs; + __be32 ipaddr[4]; + u32 key[4]; + u32 salt; + bool used; + bool crypt; + bool rx; +}; + +struct nsim_ipsec { + struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT]; + struct dentry *pfile; + u32 count; + u32 tx; + u32 ok; +}; + +struct netdevsim { + struct net_device *netdev; + + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; + + struct device dev; + struct netdevsim_shared_dev *sdev; + + struct dentry *ddir; + + unsigned int num_vfs; + struct nsim_vf_config *vfconfigs; + + struct bpf_prog *bpf_offloaded; + u32 bpf_offloaded_id; + + struct xdp_attachment_info xdp; + struct xdp_attachment_info xdp_hw; + + bool bpf_bind_accept; + u32 bpf_bind_verifier_delay; + + bool bpf_tc_accept; + bool bpf_tc_non_bound_accept; + bool bpf_xdpdrv_accept; + bool bpf_xdpoffload_accept; + + bool bpf_map_accept; +#if IS_ENABLED(CONFIG_NET_DEVLINK) + struct devlink *devlink; +#endif + struct nsim_ipsec ipsec; +}; + +#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, + struct netlink_ext_ack *extack); +#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 + +#if IS_ENABLED(CONFIG_XFRM_OFFLOAD) +void nsim_ipsec_init(struct netdevsim *ns); +void nsim_ipsec_teardown(struct netdevsim *ns); +bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb); +#else +static inline void nsim_ipsec_init(struct netdevsim *ns) +{ +} + +static inline void nsim_ipsec_teardown(struct netdevsim *ns) +{ +} + +static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb) +{ + return true; +} +#endif + +static inline struct netdevsim *to_nsim(struct device *ptr) +{ + return container_of(ptr, struct netdevsim, dev); +} |