gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/net/ipv6/icmp_bsd.go (about)

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build aix || darwin || dragonfly || freebsd || netbsd || openbsd
     6  // +build aix darwin dragonfly freebsd netbsd openbsd
     7  
     8  package ipv6
     9  
    10  func (f *icmpv6Filter) accept(typ ICMPType) {
    11  	f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
    12  }
    13  
    14  func (f *icmpv6Filter) block(typ ICMPType) {
    15  	f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
    16  }
    17  
    18  func (f *icmpv6Filter) setAll(block bool) {
    19  	for i := range f.Filt {
    20  		if block {
    21  			f.Filt[i] = 0
    22  		} else {
    23  			f.Filt[i] = 1<<32 - 1
    24  		}
    25  	}
    26  }
    27  
    28  func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
    29  	return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
    30  }