1 /* 2 * Copyright (C) 2017 Netronome Systems, Inc. 3 * 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 6 * source tree. 7 * 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. 14 */ 15 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 22 #define DRV_NAME "netdevsim" 23 24 #define NSIM_XDP_MAX_MTU 4000 25 26 #define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg) 27 28 struct bpf_prog; 29 struct dentry; 30 struct nsim_vf_config; 31 32 struct netdevsim { 33 struct net_device *netdev; 34 35 u64 tx_packets; 36 u64 tx_bytes; 37 struct u64_stats_sync syncp; 38 39 struct device dev; 40 41 struct dentry *ddir; 42 43 unsigned int num_vfs; 44 struct nsim_vf_config *vfconfigs; 45 46 struct bpf_prog *bpf_offloaded; 47 u32 bpf_offloaded_id; 48 49 u32 xdp_flags; 50 int xdp_prog_mode; 51 struct bpf_prog *xdp_prog; 52 53 u32 prog_id_gen; 54 55 bool bpf_bind_accept; 56 u32 bpf_bind_verifier_delay; 57 struct dentry *ddir_bpf_bound_progs; 58 struct list_head bpf_bound_progs; 59 60 bool bpf_tc_accept; 61 bool bpf_tc_non_bound_accept; 62 bool bpf_xdpdrv_accept; 63 bool bpf_xdpoffload_accept; 64 }; 65 66 extern struct dentry *nsim_ddir; 67 68 int nsim_bpf_init(struct netdevsim *ns); 69 void nsim_bpf_uninit(struct netdevsim *ns); 70 int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf); 71 int nsim_bpf_disable_tc(struct netdevsim *ns); 72 int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, 73 void *type_data, void *cb_priv); 74 75 static inline struct netdevsim *to_nsim(struct device *ptr) 76 { 77 return container_of(ptr, struct netdevsim, dev); 78 } 79