3eaad8e530
This patch defines __NR_bpf for powerpc architecture and hence,
fixes compiling tap driver for this architecture.
Fixes: b02d85e1 ("net/tap: add eBPF API")
Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
Acked-by: Pascal Mazon <pascal.mazon@6wind.com>
116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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* Copyright 2017 Mellanox Technologies, Ltd.
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*/
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#ifndef __TAP_BPF_H__
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#define __TAP_BPF_H__
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#include <tap_autoconf.h>
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/* Do not #include <linux/bpf.h> since eBPF must compile on different
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* distros which may include partial definitions for eBPF (while the
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* kernel itself may support eBPF). Instead define here all that is needed
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*/
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/* BPF_MAP_UPDATE_ELEM command flags */
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#define BPF_ANY 0 /* create a new element or update an existing */
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/* BPF architecture instruction struct */
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struct bpf_insn {
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__u8 code;
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__u8 dst_reg:4;
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__u8 src_reg:4;
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__s16 off;
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__s32 imm; /* immediate value */
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};
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/* BPF program types */
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enum bpf_prog_type {
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BPF_PROG_TYPE_UNSPEC,
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BPF_PROG_TYPE_SOCKET_FILTER,
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BPF_PROG_TYPE_KPROBE,
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BPF_PROG_TYPE_SCHED_CLS,
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BPF_PROG_TYPE_SCHED_ACT,
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};
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/* BPF commands types */
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enum bpf_cmd {
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BPF_MAP_CREATE,
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BPF_MAP_LOOKUP_ELEM,
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BPF_MAP_UPDATE_ELEM,
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BPF_MAP_DELETE_ELEM,
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BPF_MAP_GET_NEXT_KEY,
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BPF_PROG_LOAD,
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};
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/* BPF maps types */
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enum bpf_map_type {
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BPF_MAP_TYPE_UNSPEC,
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BPF_MAP_TYPE_HASH,
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};
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/* union of anonymous structs used with TAP BPF commands */
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union bpf_attr {
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/* BPF_MAP_CREATE command */
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struct {
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__u32 map_type;
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__u32 key_size;
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__u32 value_size;
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__u32 max_entries;
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__u32 map_flags;
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__u32 inner_map_fd;
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};
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/* BPF_MAP_UPDATE_ELEM, BPF_MAP_DELETE_ELEM commands */
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struct {
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__u32 map_fd;
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__aligned_u64 key;
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union {
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__aligned_u64 value;
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__aligned_u64 next_key;
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};
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__u64 flags;
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};
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/* BPF_PROG_LOAD command */
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struct {
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__u32 prog_type;
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__u32 insn_cnt;
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__aligned_u64 insns;
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__aligned_u64 license;
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__u32 log_level;
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__u32 log_size;
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__aligned_u64 log_buf;
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__u32 kern_version;
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__u32 prog_flags;
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};
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} __attribute__((aligned(8)));
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#ifndef __NR_bpf
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# if defined(__i386__)
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# define __NR_bpf 357
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# elif defined(__x86_64__)
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# define __NR_bpf 321
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# elif defined(__aarch64__)
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# define __NR_bpf 280
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# elif defined(__sparc__)
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# define __NR_bpf 349
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# elif defined(__s390__)
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# define __NR_bpf 351
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# elif defined(__powerpc__)
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# define __NR_bpf 361
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# else
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# error __NR_bpf not defined
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# endif
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#endif
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enum {
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BPF_MAP_ID_KEY,
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BPF_MAP_ID_SIMPLE,
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};
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static int bpf_load(enum bpf_prog_type type, const struct bpf_insn *insns,
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size_t insns_cnt, const char *license);
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#endif /* __TAP_BPF_H__ */
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