gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/pkg/abi/linux/bpf.go (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package linux
    16  
    17  // BPFInstruction is a raw BPF virtual machine instruction.
    18  //
    19  // +marshal slice:BPFInstructionSlice
    20  // +stateify savable
    21  type BPFInstruction struct {
    22  	// OpCode is the operation to execute.
    23  	OpCode uint16
    24  
    25  	// JumpIfTrue is the number of instructions to skip if OpCode is a
    26  	// conditional instruction and the condition is true.
    27  	JumpIfTrue uint8
    28  
    29  	// JumpIfFalse is the number of instructions to skip if OpCode is a
    30  	// conditional instruction and the condition is false.
    31  	JumpIfFalse uint8
    32  
    33  	// K is a constant parameter. The meaning depends on the value of OpCode.
    34  	K uint32
    35  }