60702e8c7c
Extend struct rte_bpf_xsym with new fields to provide information about: - for variables - type and size - for functions - number of arguments and type/size of each argument and return value Such information would allow validate code to perform more extensive checking on input BPF program and catch misbehaving BPF code. That change would cause ABI/API breakage for librte_bpf. Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
56 lines
967 B
C
56 lines
967 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2018 Intel Corporation
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*/
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#ifndef _BPF_H_
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#define _BPF_H_
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#include <rte_bpf.h>
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#include <sys/mman.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_BPF_STACK_SIZE 0x200
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struct rte_bpf {
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struct rte_bpf_prm prm;
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struct rte_bpf_jit jit;
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size_t sz;
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uint32_t stack_sz;
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};
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extern int bpf_validate(struct rte_bpf *bpf);
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extern int bpf_jit(struct rte_bpf *bpf);
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#ifdef RTE_ARCH_X86_64
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extern int bpf_jit_x86(struct rte_bpf *);
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#endif
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extern int rte_bpf_logtype;
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#define RTE_BPF_LOG(lvl, fmt, args...) \
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rte_log(RTE_LOG_## lvl, rte_bpf_logtype, fmt, ##args)
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static inline size_t
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bpf_size(uint32_t bpf_op_sz)
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{
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if (bpf_op_sz == BPF_B)
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return sizeof(uint8_t);
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else if (bpf_op_sz == BPF_H)
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return sizeof(uint16_t);
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else if (bpf_op_sz == BPF_W)
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return sizeof(uint32_t);
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else if (bpf_op_sz == EBPF_DW)
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return sizeof(uint64_t);
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _BPF_H_ */
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