mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Scott Feldman
8238f96319
This moves the netdev/netlink namespace out of drivers and into their own packages. Also, defines netdev and netlink as L3/L4 and L2 OSI layers, respectively. Move some L3 functionality from netlink to netdev (GetIPAddr). For netlink, add ConnectParams for NetConnect to pass in L2 connection parameters (ssid, pass, auth_type, etc). Also adds connection mode (STA, AP, etc). For netlink, add SendEth and RecvEthFunc funcs to handle L2 send/recv of Ethernet pkts.
90 lines
2.8 KiB
Go
90 lines
2.8 KiB
Go
// L3/L4 network/transport layer
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package netdev
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import (
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"errors"
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"net"
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"time"
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_ "unsafe" // to use go:linkname
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)
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const (
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AF_INET = 0x2
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SOCK_STREAM = 0x1
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SOCK_DGRAM = 0x2
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SOL_SOCKET = 0x1
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SO_KEEPALIVE = 0x9
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SOL_TCP = 0x6
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TCP_KEEPINTVL = 0x5
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IPPROTO_TCP = 0x6
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IPPROTO_UDP = 0x11
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// Made up, not a real IP protocol number. This is used to create a
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// TLS socket on the device, assuming the device supports mbed TLS.
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IPPROTO_TLS = 0xFE
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F_SETFL = 0x4
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)
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// GethostByName() errors
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var (
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ErrHostUnknown = errors.New("Host unknown")
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)
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// Socket errors
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var (
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ErrFamilyNotSupported = errors.New("Address family not supported")
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ErrProtocolNotSupported = errors.New("Socket protocol/type not supported")
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ErrStartingDHCPClient = errors.New("Error starting DHPC client")
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ErrNoMoreSockets = errors.New("No more sockets")
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ErrClosingSocket = errors.New("Error closing socket")
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ErrNotSupported = errors.New("Not supported")
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)
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// Duplicate of non-exported net.errTimeout
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var ErrTimeout error = &timeoutError{}
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type timeoutError struct{}
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func (e *timeoutError) Error() string { return "i/o timeout" }
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func (e *timeoutError) Timeout() bool { return true }
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func (e *timeoutError) Temporary() bool { return true }
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//go:linkname UseNetdev net.useNetdev
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func UseNetdev(dev Netdever)
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// Netdever is TinyGo's OSI L3/L4 network/transport layer interface. Network
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// drivers implement the Netdever interface, providing a common network L3/L4
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// interface to TinyGo's "net" package. net.Conn implementations (TCPConn,
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// UDPConn, and TLSConn) use the Netdever interface for device I/O access.
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//
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// A Netdever is passed to the "net" package using UseNetdev().
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//
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// Just like a net.Conn, multiple goroutines may invoke methods on a Netdever
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// simultaneously.
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//
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// NOTE: The Netdever interface is mirrored in tinygo/src/net/netdev.go.
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// NOTE: If making changes to this interface, mirror the changes in
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// NOTE: tinygo/src/net/netdev.go, and vice-versa.
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type Netdever interface {
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// GetHostByName returns the IP address of either a hostname or IPv4
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// address in standard dot notation
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GetHostByName(name string) (net.IP, error)
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// GetIPAddr returns IP address assigned to the interface, either by
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// DHCP or statically
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GetIPAddr() (net.IP, error)
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// Berkely Sockets-like interface, Go-ified. See man page for socket(2), etc.
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Socket(domain int, stype int, protocol int) (int, error)
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Bind(sockfd int, ip net.IP, port int) error
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Connect(sockfd int, host string, ip net.IP, port int) error
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Listen(sockfd int, backlog int) error
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Accept(sockfd int, ip net.IP, port int) (int, error)
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Send(sockfd int, buf []byte, flags int, deadline time.Time) (int, error)
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Recv(sockfd int, buf []byte, flags int, deadline time.Time) (int, error)
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Close(sockfd int) error
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SetSockOpt(sockfd int, level int, opt int, value interface{}) error
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}
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