mirror of
https://github.com/impact-eintr/netstack.git
synced 2025-10-06 05:16:50 +08:00
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
package fdbased
|
||
|
||
import (
|
||
"syscall"
|
||
|
||
"github.com/impact-eintr/netstack/tcpip"
|
||
"github.com/impact-eintr/netstack/tcpip/buffer"
|
||
"github.com/impact-eintr/netstack/tcpip/stack"
|
||
)
|
||
|
||
// 负责底层网卡的io读写以及数据分发
|
||
type endpoint struct {
|
||
// 发送和接收数据的文件描述符
|
||
fd int
|
||
|
||
// 单个帧的最大长度
|
||
mtu uint32
|
||
|
||
// 以太网头部长度
|
||
hdrSize int
|
||
|
||
// 网卡地址
|
||
addr tcpip.LinkAddress
|
||
|
||
// 网卡的能力
|
||
caps stack.LinkEndpointCapabilities
|
||
|
||
// closed is a function to be called when the FD's peer (if any) closes
|
||
// its end of the communication pipe.
|
||
closed func(*tcpip.Error)
|
||
|
||
iovecs []syscall.Iovec
|
||
views []buffer.View
|
||
dispatcher stack.NetworkDispatcher
|
||
|
||
// handleLocal indicates whether packets destined to itself should be
|
||
// handled by the netstack internally (true) or be forwarded to the FD
|
||
// endpoint (false).
|
||
// handleLocal指示发往自身的数据包是由内部netstack处理（true）还是转发到FD端点（false）。
|
||
// Resend packets back to netstack if destined to itself
|
||
// Add option to redirect packet back to netstack if it's destined to itself.
|
||
// This fixes the problem where connecting to the local NIC address would
|
||
// not work, e.g.:
|
||
// echo bar | nc -l -p 8080 &
|
||
// echo foo | nc 192.168.0.2 8080
|
||
handleLocal bool
|
||
}
|