github.com/yaling888/clash@v1.53.0/component/ebpf/redir/bpf_bpfel.go (about)

     1  // Code generated by bpf2go; DO NOT EDIT.
     2  //go:build 386 || amd64 || amd64p32 || arm || arm64 || loong64 || mipsle || mips64le || mips64p32le || ppc64le || riscv64
     3  
     4  package redir
     5  
     6  import (
     7  	"bytes"
     8  	_ "embed"
     9  	"fmt"
    10  	"io"
    11  
    12  	"github.com/cilium/ebpf"
    13  )
    14  
    15  type bpfOriginInfo struct {
    16  	Ip   uint32
    17  	Port uint16
    18  	Pad  uint16
    19  }
    20  
    21  type bpfRedirInfo struct {
    22  	Sip   uint32
    23  	Dip   uint32
    24  	Sport uint16
    25  	Dport uint16
    26  }
    27  
    28  // loadBpf returns the embedded CollectionSpec for bpf.
    29  func loadBpf() (*ebpf.CollectionSpec, error) {
    30  	reader := bytes.NewReader(_BpfBytes)
    31  	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
    32  	if err != nil {
    33  		return nil, fmt.Errorf("can't load bpf: %w", err)
    34  	}
    35  
    36  	return spec, err
    37  }
    38  
    39  // loadBpfObjects loads bpf and converts it into a struct.
    40  //
    41  // The following types are suitable as obj argument:
    42  //
    43  //	*bpfObjects
    44  //	*bpfPrograms
    45  //	*bpfMaps
    46  //
    47  // See ebpf.CollectionSpec.LoadAndAssign documentation for details.
    48  func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
    49  	spec, err := loadBpf()
    50  	if err != nil {
    51  		return err
    52  	}
    53  
    54  	return spec.LoadAndAssign(obj, opts)
    55  }
    56  
    57  // bpfSpecs contains maps and programs before they are loaded into the kernel.
    58  //
    59  // It can be passed ebpf.CollectionSpec.Assign.
    60  type bpfSpecs struct {
    61  	bpfProgramSpecs
    62  	bpfMapSpecs
    63  }
    64  
    65  // bpfSpecs contains programs before they are loaded into the kernel.
    66  //
    67  // It can be passed ebpf.CollectionSpec.Assign.
    68  type bpfProgramSpecs struct {
    69  	TcRedirEgressFunc  *ebpf.ProgramSpec `ebpf:"tc_redir_egress_func"`
    70  	TcRedirIngressFunc *ebpf.ProgramSpec `ebpf:"tc_redir_ingress_func"`
    71  }
    72  
    73  // bpfMapSpecs contains maps before they are loaded into the kernel.
    74  //
    75  // It can be passed ebpf.CollectionSpec.Assign.
    76  type bpfMapSpecs struct {
    77  	PairOriginalDstMap *ebpf.MapSpec `ebpf:"pair_original_dst_map"`
    78  	RedirParamsMap     *ebpf.MapSpec `ebpf:"redir_params_map"`
    79  }
    80  
    81  // bpfObjects contains all objects after they have been loaded into the kernel.
    82  //
    83  // It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
    84  type bpfObjects struct {
    85  	bpfPrograms
    86  	bpfMaps
    87  }
    88  
    89  func (o *bpfObjects) Close() error {
    90  	return _BpfClose(
    91  		&o.bpfPrograms,
    92  		&o.bpfMaps,
    93  	)
    94  }
    95  
    96  // bpfMaps contains all maps after they have been loaded into the kernel.
    97  //
    98  // It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
    99  type bpfMaps struct {
   100  	PairOriginalDstMap *ebpf.Map `ebpf:"pair_original_dst_map"`
   101  	RedirParamsMap     *ebpf.Map `ebpf:"redir_params_map"`
   102  }
   103  
   104  func (m *bpfMaps) Close() error {
   105  	return _BpfClose(
   106  		m.PairOriginalDstMap,
   107  		m.RedirParamsMap,
   108  	)
   109  }
   110  
   111  // bpfPrograms contains all programs after they have been loaded into the kernel.
   112  //
   113  // It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
   114  type bpfPrograms struct {
   115  	TcRedirEgressFunc  *ebpf.Program `ebpf:"tc_redir_egress_func"`
   116  	TcRedirIngressFunc *ebpf.Program `ebpf:"tc_redir_ingress_func"`
   117  }
   118  
   119  func (p *bpfPrograms) Close() error {
   120  	return _BpfClose(
   121  		p.TcRedirEgressFunc,
   122  		p.TcRedirIngressFunc,
   123  	)
   124  }
   125  
   126  func _BpfClose(closers ...io.Closer) error {
   127  	for _, closer := range closers {
   128  		if err := closer.Close(); err != nil {
   129  			return err
   130  		}
   131  	}
   132  	return nil
   133  }
   134  
   135  // Do not access this directly.
   136  //
   137  //go:embed bpf_bpfel.o
   138  var _BpfBytes []byte