54 lines
1.6 KiB
Markdown
54 lines
1.6 KiB
Markdown
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:::{note}
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**AI Translation Notice**
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This document was automatically translated by `hunyuan-turbos-latest` model, for reference only.
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- Source document: kernel/net/inet.md
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- Translation time: 2025-09-11 16:37:18
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- Translation model: `hunyuan-turbos-latest`
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Please report issues via [Community Channel](https://github.com/DragonOS-Community/DragonOS/issues)
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:::
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# Internet Protocol Socket
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As is well known, the commonly used Inet Sockets are divided into TCP, UDP, and ICMP. For practical purposes, only TCP and UDP have been implemented so far.
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The entire Inet network protocol stack interacts with the network card based on the `smoltcp` crate.
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## Roadmap
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- [ ] TCP
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- [x] Accept connections
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- [ ] Initiate connections
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- [ ] Half-duplex close
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- [x] UDP
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- [x] Transmit data
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- [ ] ICMP
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- [ ] ioctl
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- [ ] Misc
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- [ ] Lock handling for converting hardware interrupts to software interrupts (to avoid deadlocks)
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- [ ] epoll_item optimization
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- [ ] Optimize `inet port` resource management
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## TCP
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Several state classes of the TCP Socket are defined according to the TCP state machine:
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- `Init`: Raw state
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- `Unbound`: State after creation
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- `Bound`: State after binding an address
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- `Listening`: Listening state
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- `Connecting`: Connecting state
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- `Established`: Connected state
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## UDP
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UDP is connectionless, so there is no connection state. The UDP state only includes `Unbound` and `Bound`.
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## BoundInner
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Another abstraction for the Inet Socket, used to handle the `socket` bound to the network card, thereby encapsulating the `smoltcp` interface and providing unified resource management.
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