| /* |
| * Copyright 2015 Big Switch Networks, Inc |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef EBPF_H |
| #define EBPF_H |
| |
| #include <stdint.h> |
| |
| /* eBPF definitions */ |
| |
| struct ebpf_inst { |
| uint8_t opcode; |
| uint8_t dst : 4; |
| uint8_t src : 4; |
| int16_t offset; |
| int32_t imm; |
| }; |
| |
| #define EBPF_CLS_MASK 0x07 |
| #define EBPF_ALU_OP_MASK 0xf0 |
| |
| #define EBPF_CLS_LD 0x00 |
| #define EBPF_CLS_LDX 0x01 |
| #define EBPF_CLS_ST 0x02 |
| #define EBPF_CLS_STX 0x03 |
| #define EBPF_CLS_ALU 0x04 |
| #define EBPF_CLS_JMP 0x05 |
| #define EBPF_CLS_ALU64 0x07 |
| |
| #define EBPF_SRC_IMM 0x00 |
| #define EBPF_SRC_REG 0x08 |
| |
| #define EBPF_SIZE_W 0x00 |
| #define EBPF_SIZE_H 0x08 |
| #define EBPF_SIZE_B 0x10 |
| #define EBPF_SIZE_DW 0x18 |
| |
| /* Other memory modes are not yet supported */ |
| #define EBPF_MODE_IMM 0x00 |
| #define EBPF_MODE_MEM 0x60 |
| |
| #define EBPF_OP_ADD_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x00) |
| #define EBPF_OP_ADD_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x00) |
| #define EBPF_OP_SUB_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x10) |
| #define EBPF_OP_SUB_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x10) |
| #define EBPF_OP_MUL_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x20) |
| #define EBPF_OP_MUL_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x20) |
| #define EBPF_OP_DIV_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x30) |
| #define EBPF_OP_DIV_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x30) |
| #define EBPF_OP_OR_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x40) |
| #define EBPF_OP_OR_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x40) |
| #define EBPF_OP_AND_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x50) |
| #define EBPF_OP_AND_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x50) |
| #define EBPF_OP_LSH_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x60) |
| #define EBPF_OP_LSH_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x60) |
| #define EBPF_OP_RSH_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x70) |
| #define EBPF_OP_RSH_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x70) |
| #define EBPF_OP_NEG (EBPF_CLS_ALU|0x80) |
| #define EBPF_OP_MOD_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0x90) |
| #define EBPF_OP_MOD_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0x90) |
| #define EBPF_OP_XOR_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0xa0) |
| #define EBPF_OP_XOR_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0xa0) |
| #define EBPF_OP_MOV_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0xb0) |
| #define EBPF_OP_MOV_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0xb0) |
| #define EBPF_OP_ARSH_IMM (EBPF_CLS_ALU|EBPF_SRC_IMM|0xc0) |
| #define EBPF_OP_ARSH_REG (EBPF_CLS_ALU|EBPF_SRC_REG|0xc0) |
| #define EBPF_OP_LE (EBPF_CLS_ALU|EBPF_SRC_IMM|0xd0) |
| #define EBPF_OP_BE (EBPF_CLS_ALU|EBPF_SRC_REG|0xd0) |
| |
| #define EBPF_OP_ADD64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x00) |
| #define EBPF_OP_ADD64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x00) |
| #define EBPF_OP_SUB64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x10) |
| #define EBPF_OP_SUB64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x10) |
| #define EBPF_OP_MUL64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x20) |
| #define EBPF_OP_MUL64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x20) |
| #define EBPF_OP_DIV64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x30) |
| #define EBPF_OP_DIV64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x30) |
| #define EBPF_OP_OR64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x40) |
| #define EBPF_OP_OR64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x40) |
| #define EBPF_OP_AND64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x50) |
| #define EBPF_OP_AND64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x50) |
| #define EBPF_OP_LSH64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x60) |
| #define EBPF_OP_LSH64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x60) |
| #define EBPF_OP_RSH64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x70) |
| #define EBPF_OP_RSH64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x70) |
| #define EBPF_OP_NEG64 (EBPF_CLS_ALU64|0x80) |
| #define EBPF_OP_MOD64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0x90) |
| #define EBPF_OP_MOD64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0x90) |
| #define EBPF_OP_XOR64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0xa0) |
| #define EBPF_OP_XOR64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0xa0) |
| #define EBPF_OP_MOV64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0xb0) |
| #define EBPF_OP_MOV64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0xb0) |
| #define EBPF_OP_ARSH64_IMM (EBPF_CLS_ALU64|EBPF_SRC_IMM|0xc0) |
| #define EBPF_OP_ARSH64_REG (EBPF_CLS_ALU64|EBPF_SRC_REG|0xc0) |
| |
| #define EBPF_OP_LDXW (EBPF_CLS_LDX|EBPF_MODE_MEM|EBPF_SIZE_W) |
| #define EBPF_OP_LDXH (EBPF_CLS_LDX|EBPF_MODE_MEM|EBPF_SIZE_H) |
| #define EBPF_OP_LDXB (EBPF_CLS_LDX|EBPF_MODE_MEM|EBPF_SIZE_B) |
| #define EBPF_OP_LDXDW (EBPF_CLS_LDX|EBPF_MODE_MEM|EBPF_SIZE_DW) |
| #define EBPF_OP_STW (EBPF_CLS_ST|EBPF_MODE_MEM|EBPF_SIZE_W) |
| #define EBPF_OP_STH (EBPF_CLS_ST|EBPF_MODE_MEM|EBPF_SIZE_H) |
| #define EBPF_OP_STB (EBPF_CLS_ST|EBPF_MODE_MEM|EBPF_SIZE_B) |
| #define EBPF_OP_STDW (EBPF_CLS_ST|EBPF_MODE_MEM|EBPF_SIZE_DW) |
| #define EBPF_OP_STXW (EBPF_CLS_STX|EBPF_MODE_MEM|EBPF_SIZE_W) |
| #define EBPF_OP_STXH (EBPF_CLS_STX|EBPF_MODE_MEM|EBPF_SIZE_H) |
| #define EBPF_OP_STXB (EBPF_CLS_STX|EBPF_MODE_MEM|EBPF_SIZE_B) |
| #define EBPF_OP_STXDW (EBPF_CLS_STX|EBPF_MODE_MEM|EBPF_SIZE_DW) |
| #define EBPF_OP_LDDW (EBPF_CLS_LD|EBPF_MODE_IMM|EBPF_SIZE_DW) |
| |
| #define EBPF_OP_JA (EBPF_CLS_JMP|0x00) |
| #define EBPF_OP_JEQ_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x10) |
| #define EBPF_OP_JEQ_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x10) |
| #define EBPF_OP_JGT_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x20) |
| #define EBPF_OP_JGT_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x20) |
| #define EBPF_OP_JGE_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x30) |
| #define EBPF_OP_JGE_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x30) |
| #define EBPF_OP_JSET_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x40) |
| #define EBPF_OP_JSET_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x40) |
| #define EBPF_OP_JNE_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x50) |
| #define EBPF_OP_JNE_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x50) |
| #define EBPF_OP_JSGT_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x60) |
| #define EBPF_OP_JSGT_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x60) |
| #define EBPF_OP_JSGE_IMM (EBPF_CLS_JMP|EBPF_SRC_IMM|0x70) |
| #define EBPF_OP_JSGE_REG (EBPF_CLS_JMP|EBPF_SRC_REG|0x70) |
| #define EBPF_OP_CALL (EBPF_CLS_JMP|0x80) |
| #define EBPF_OP_EXIT (EBPF_CLS_JMP|0x90) |
| |
| #endif |
