mirror of
https://github.com/impact-eintr/netstack.git
synced 2025-10-05 21:06:50 +08:00
46 lines
1020 B
Go
46 lines
1020 B
Go
package tcp
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import (
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"log"
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"netstack/tcpip/buffer"
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"netstack/tcpip/header"
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"netstack/tcpip/stack"
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"sync/atomic"
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)
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// tcp 太复杂了 专门写一个协议解析器
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// segment 表示一个 TCP 段。它保存有效负载和解析的 TCP 段信息，并且可以添加到侵入列表中
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type segment struct {
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segmentEntry
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refCnt int32
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id stack.TransportEndpointID
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route stack.Route
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data buffer.VectorisedView
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// views is used as buffer for data when its length is large
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// enough to store a VectorisedView.
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views [8]buffer.View
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// TODO 需要添加
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}
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func newSegment(r *stack.Route, id stack.TransportEndpointID, vv buffer.VectorisedView) *segment {
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s := &segment{refCnt: 1, id: id, route: r.Clone()}
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s.data = vv.Clone(s.views[:])
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return s
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}
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func (s *segment) decRef() {
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if atomic.AddInt32(&s.refCnt, -1) == 0 {
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s.route.Release()
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}
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}
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func (s *segment) incRef() {
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atomic.AddInt32(&s.refCnt, 1)
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}
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func (s *segment) parse() bool {
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log.Println(header.TCP(s.data.First()))
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return false
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}
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