206 lines
4.5 KiB
C
206 lines
4.5 KiB
C
/*
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* Copyright (C) 2017 Netronome Systems, Inc.
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*
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* This software is licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree.
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*
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* THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
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* OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
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* THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/u64_stats_sync.h>
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#include <net/xdp.h>
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#define DRV_NAME "netdevsim"
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#define NSIM_XDP_MAX_MTU 4000
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#define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
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struct bpf_prog;
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struct bpf_offload_dev;
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struct dentry;
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struct nsim_vf_config;
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struct netdevsim_shared_dev {
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unsigned int refcnt;
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u32 switch_id;
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struct dentry *ddir;
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struct bpf_offload_dev *bpf_dev;
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struct dentry *ddir_bpf_bound_progs;
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u32 prog_id_gen;
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struct list_head bpf_bound_progs;
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struct list_head bpf_bound_maps;
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};
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#define NSIM_IPSEC_MAX_SA_COUNT 33
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#define NSIM_IPSEC_VALID BIT(31)
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struct nsim_sa {
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struct xfrm_state *xs;
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__be32 ipaddr[4];
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u32 key[4];
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u32 salt;
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bool used;
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bool crypt;
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bool rx;
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};
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struct nsim_ipsec {
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struct nsim_sa sa[NSIM_IPSEC_MAX_SA_COUNT];
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struct dentry *pfile;
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u32 count;
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u32 tx;
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u32 ok;
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};
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struct netdevsim {
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struct net_device *netdev;
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u64 tx_packets;
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u64 tx_bytes;
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struct u64_stats_sync syncp;
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struct device dev;
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struct netdevsim_shared_dev *sdev;
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struct dentry *ddir;
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unsigned int num_vfs;
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struct nsim_vf_config *vfconfigs;
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struct bpf_prog *bpf_offloaded;
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u32 bpf_offloaded_id;
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struct xdp_attachment_info xdp;
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struct xdp_attachment_info xdp_hw;
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bool bpf_bind_accept;
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u32 bpf_bind_verifier_delay;
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bool bpf_tc_accept;
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bool bpf_tc_non_bound_accept;
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bool bpf_xdpdrv_accept;
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bool bpf_xdpoffload_accept;
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bool bpf_map_accept;
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#if IS_ENABLED(CONFIG_NET_DEVLINK)
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struct devlink *devlink;
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#endif
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struct nsim_ipsec ipsec;
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};
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#ifdef CONFIG_BPF_SYSCALL
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int nsim_bpf_init(struct netdevsim *ns);
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void nsim_bpf_uninit(struct netdevsim *ns);
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int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
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int nsim_bpf_disable_tc(struct netdevsim *ns);
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int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
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void *type_data, void *cb_priv);
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#else
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static inline int nsim_bpf_init(struct netdevsim *ns)
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{
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return 0;
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}
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static inline void nsim_bpf_uninit(struct netdevsim *ns)
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{
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}
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static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
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{
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return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;
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}
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static inline int nsim_bpf_disable_tc(struct netdevsim *ns)
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{
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return 0;
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}
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static inline int
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nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
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void *cb_priv)
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{
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return -EOPNOTSUPP;
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}
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#endif
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#if IS_ENABLED(CONFIG_NET_DEVLINK)
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enum nsim_resource_id {
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NSIM_RESOURCE_NONE, /* DEVLINK_RESOURCE_ID_PARENT_TOP */
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NSIM_RESOURCE_IPV4,
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NSIM_RESOURCE_IPV4_FIB,
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NSIM_RESOURCE_IPV4_FIB_RULES,
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NSIM_RESOURCE_IPV6,
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NSIM_RESOURCE_IPV6_FIB,
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NSIM_RESOURCE_IPV6_FIB_RULES,
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};
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int nsim_devlink_setup(struct netdevsim *ns);
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void nsim_devlink_teardown(struct netdevsim *ns);
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int nsim_devlink_init(void);
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void nsim_devlink_exit(void);
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int nsim_fib_init(void);
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void nsim_fib_exit(void);
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u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max);
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int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val,
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struct netlink_ext_ack *extack);
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#else
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static inline int nsim_devlink_setup(struct netdevsim *ns)
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{
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return 0;
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}
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static inline void nsim_devlink_teardown(struct netdevsim *ns)
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{
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}
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static inline int nsim_devlink_init(void)
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{
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return 0;
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}
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static inline void nsim_devlink_exit(void)
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{
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}
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#endif
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#if IS_ENABLED(CONFIG_XFRM_OFFLOAD)
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void nsim_ipsec_init(struct netdevsim *ns);
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void nsim_ipsec_teardown(struct netdevsim *ns);
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bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb);
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#else
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static inline void nsim_ipsec_init(struct netdevsim *ns)
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{
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}
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static inline void nsim_ipsec_teardown(struct netdevsim *ns)
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{
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}
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static inline bool nsim_ipsec_tx(struct netdevsim *ns, struct sk_buff *skb)
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{
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return true;
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}
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#endif
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static inline struct netdevsim *to_nsim(struct device *ptr)
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{
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return container_of(ptr, struct netdevsim, dev);
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}
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