diff options
Diffstat (limited to 'kernel/include/uapi/linux/bpf.h')
| -rw-r--r-- | kernel/include/uapi/linux/bpf.h | 144 |
1 files changed, 107 insertions, 37 deletions
diff --git a/kernel/include/uapi/linux/bpf.h b/kernel/include/uapi/linux/bpf.h index a9ebdf570..9ea2d22fa 100644 --- a/kernel/include/uapi/linux/bpf.h +++ b/kernel/include/uapi/linux/bpf.h @@ -63,56 +63,24 @@ struct bpf_insn { __s32 imm; /* signed immediate constant */ }; -/* BPF syscall commands */ +/* BPF syscall commands, see bpf(2) man-page for details. */ enum bpf_cmd { - /* create a map with given type and attributes - * fd = bpf(BPF_MAP_CREATE, union bpf_attr *, u32 size) - * returns fd or negative error - * map is deleted when fd is closed - */ BPF_MAP_CREATE, - - /* lookup key in a given map - * err = bpf(BPF_MAP_LOOKUP_ELEM, union bpf_attr *attr, u32 size) - * Using attr->map_fd, attr->key, attr->value - * returns zero and stores found elem into value - * or negative error - */ BPF_MAP_LOOKUP_ELEM, - - /* create or update key/value pair in a given map - * err = bpf(BPF_MAP_UPDATE_ELEM, union bpf_attr *attr, u32 size) - * Using attr->map_fd, attr->key, attr->value, attr->flags - * returns zero or negative error - */ BPF_MAP_UPDATE_ELEM, - - /* find and delete elem by key in a given map - * err = bpf(BPF_MAP_DELETE_ELEM, union bpf_attr *attr, u32 size) - * Using attr->map_fd, attr->key - * returns zero or negative error - */ BPF_MAP_DELETE_ELEM, - - /* lookup key in a given map and return next key - * err = bpf(BPF_MAP_GET_NEXT_KEY, union bpf_attr *attr, u32 size) - * Using attr->map_fd, attr->key, attr->next_key - * returns zero and stores next key or negative error - */ BPF_MAP_GET_NEXT_KEY, - - /* verify and load eBPF program - * prog_fd = bpf(BPF_PROG_LOAD, union bpf_attr *attr, u32 size) - * Using attr->prog_type, attr->insns, attr->license - * returns fd or negative error - */ BPF_PROG_LOAD, + BPF_OBJ_PIN, + BPF_OBJ_GET, }; enum bpf_map_type { BPF_MAP_TYPE_UNSPEC, BPF_MAP_TYPE_HASH, BPF_MAP_TYPE_ARRAY, + BPF_MAP_TYPE_PROG_ARRAY, + BPF_MAP_TYPE_PERF_EVENT_ARRAY, }; enum bpf_prog_type { @@ -158,6 +126,11 @@ union bpf_attr { __aligned_u64 log_buf; /* user supplied buffer */ __u32 kern_version; /* checked when prog_type=kprobe */ }; + + struct { /* anonymous struct used by BPF_OBJ_* commands */ + __aligned_u64 pathname; + __u32 bpf_fd; + }; } __attribute__((aligned(8))); /* integer value in 'imm' field of BPF_CALL instruction selects which helper @@ -210,6 +183,92 @@ enum bpf_func_id { * Return: 0 on success */ BPF_FUNC_l4_csum_replace, + + /** + * bpf_tail_call(ctx, prog_array_map, index) - jump into another BPF program + * @ctx: context pointer passed to next program + * @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY + * @index: index inside array that selects specific program to run + * Return: 0 on success + */ + BPF_FUNC_tail_call, + + /** + * bpf_clone_redirect(skb, ifindex, flags) - redirect to another netdev + * @skb: pointer to skb + * @ifindex: ifindex of the net device + * @flags: bit 0 - if set, redirect to ingress instead of egress + * other bits - reserved + * Return: 0 on success + */ + BPF_FUNC_clone_redirect, + + /** + * u64 bpf_get_current_pid_tgid(void) + * Return: current->tgid << 32 | current->pid + */ + BPF_FUNC_get_current_pid_tgid, + + /** + * u64 bpf_get_current_uid_gid(void) + * Return: current_gid << 32 | current_uid + */ + BPF_FUNC_get_current_uid_gid, + + /** + * bpf_get_current_comm(char *buf, int size_of_buf) + * stores current->comm into buf + * Return: 0 on success + */ + BPF_FUNC_get_current_comm, + + /** + * bpf_get_cgroup_classid(skb) - retrieve a proc's classid + * @skb: pointer to skb + * Return: classid if != 0 + */ + BPF_FUNC_get_cgroup_classid, + BPF_FUNC_skb_vlan_push, /* bpf_skb_vlan_push(skb, vlan_proto, vlan_tci) */ + BPF_FUNC_skb_vlan_pop, /* bpf_skb_vlan_pop(skb) */ + + /** + * bpf_skb_[gs]et_tunnel_key(skb, key, size, flags) + * retrieve or populate tunnel metadata + * @skb: pointer to skb + * @key: pointer to 'struct bpf_tunnel_key' + * @size: size of 'struct bpf_tunnel_key' + * @flags: room for future extensions + * Retrun: 0 on success + */ + BPF_FUNC_skb_get_tunnel_key, + BPF_FUNC_skb_set_tunnel_key, + BPF_FUNC_perf_event_read, /* u64 bpf_perf_event_read(&map, index) */ + /** + * bpf_redirect(ifindex, flags) - redirect to another netdev + * @ifindex: ifindex of the net device + * @flags: bit 0 - if set, redirect to ingress instead of egress + * other bits - reserved + * Return: TC_ACT_REDIRECT + */ + BPF_FUNC_redirect, + + /** + * bpf_get_route_realm(skb) - retrieve a dst's tclassid + * @skb: pointer to skb + * Return: realm if != 0 + */ + BPF_FUNC_get_route_realm, + + /** + * bpf_perf_event_output(ctx, map, index, data, size) - output perf raw sample + * @ctx: struct pt_regs* + * @map: pointer to perf_event_array map + * @index: index of event in the map + * @data: data on stack to be output as raw data + * @size: size of data + * Return: 0 on success + */ + BPF_FUNC_perf_event_output, __BPF_FUNC_MAX_ID, }; @@ -226,6 +285,17 @@ struct __sk_buff { __u32 vlan_tci; __u32 vlan_proto; __u32 priority; + __u32 ingress_ifindex; + __u32 ifindex; + __u32 tc_index; + __u32 cb[5]; + __u32 hash; + __u32 tc_classid; +}; + +struct bpf_tunnel_key { + __u32 tunnel_id; + __u32 remote_ipv4; }; #endif /* _UAPI__LINUX_BPF_H__ */ |