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apply some of @scottfeldman's suggestions

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soypat
2023-12-19 23:07:20 -03:00
parent b4f43b4d21
commit 728bdbba5b
1 changed files with 40 additions and 39 deletions
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nets/nets.go
+40 -39
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@@ -2,12 +2,13 @@ package nets
import ( import (
"errors" "errors"
"net"
"net/netip" "net/netip"
"time" "time"
) )
//go:linkname UseStack net.useNetdev //go:linkname UseSocketStack net.useNetdev
func UseStack(stack Stack) func UseSocketStack(stack SocketStack)
// GethostByName() errors // GethostByName() errors
var ( var (
@@ -36,36 +37,36 @@ var (
) )
const ( const (
AF_INET = 0x2 _AF_INET = 0x2
SOCK_STREAM = 0x1 _SOCK_STREAM = 0x1
SOCK_DGRAM = 0x2 _SOCK_DGRAM = 0x2
SOL_SOCKET = 0x1 _SOL_SOCKET = 0x1
SO_KEEPALIVE = 0x9 _SO_KEEPALIVE = 0x9
SOL_TCP = 0x6 _SOL_TCP = 0x6
TCP_KEEPINTVL = 0x5 _TCP_KEEPINTVL = 0x5
IPPROTO_TCP = 0x6 _IPPROTO_TCP = 0x6
IPPROTO_UDP = 0x11 _IPPROTO_UDP = 0x11
// Made up, not a real IP protocol number. This is used to create a // Made up, not a real IP protocol number. This is used to create a
// TLS socket on the device, assuming the device supports mbed TLS. // TLS socket on the device, assuming the device supports mbed TLS.
IPPROTO_TLS = 0xFE _IPPROTO_TLS = 0xFE
F_SETFL = 0x4 _F_SETFL = 0x4
) )
// Link is the minimum interface that need be implemented by any network // Interface is the minimum interface that need be implemented by any network
// device driver. // device driver and is based on [net.Interface].
type Link interface { type Interface interface {
// HardwareAddr6 returns the device's 6-byte [MAC address], a.k.a EUI-48. // HardwareAddr6 returns the device's 6-byte [MAC address].
// //
// [MAC address]: https://en.wikipedia.org/wiki/MAC_address // [MAC address]: https://en.wikipedia.org/wiki/MAC_address
HardwareAddr6() ([6]byte, error) HardwareAddr6() ([6]byte, error)
// LinkStatus returns the state of the connection. // Flags returns the net.Flag values for the interface. It includes state of connection.
LinkStatus() LinkStatus Flags() net.Flags
// MTU returns the maximum transmission unit size. // MTU returns the maximum transmission unit size.
MTU() int MTU() int
} }
type EthPollerLink interface { type EthPoller interface {
Link Interface
// SendEth sends an Ethernet packet // SendEth sends an Ethernet packet
SendEth(pkt []byte) error SendEth(pkt []byte) error
// RecvEthHandle sets recieve Ethernet packet callback function // RecvEthHandle sets recieve Ethernet packet callback function
@@ -74,8 +75,8 @@ type EthPollerLink interface {
PollOne() (bool, error) PollOne() (bool, error)
} }
type LinkWifi interface { type InterfaceWifi interface {
Link Interface
// Connect device to network // Connect device to network
NetConnect(params WifiParams) error NetConnect(params WifiParams) error
// Disconnect device from network // Disconnect device from network
@@ -84,10 +85,10 @@ type LinkWifi interface {
NetNotify(cb func(Event)) NetNotify(cb func(Event))
} }
type Stack interface { type SocketStack interface {
// GetHostByName returns the IP address of either a hostname or IPv4 // GetHostByName returns the IP address of either a hostname or IPv4
// address in standard dot notation // address in standard dot notation
GetHostByName(name string) (netip.Addr, error) // GetHostByName(name string) (netip.Addr, error)
// Addr returns IP address assigned to the interface, either by // Addr returns IP address assigned to the interface, either by
// DHCP or statically // DHCP or statically
@@ -105,10 +106,18 @@ type Stack interface {
SetSockOpt(sockfd int, level int, opt int, value interface{}) error SetSockOpt(sockfd int, level int, opt int, value interface{}) error
} }
// Netdev is returned by `Probe` function. // Should have UseResolver package level function that replaces the Go Resolver?
type Netdev interface { type Resolver interface {
LinkWifi // GetHostByName returns the IP address of either a hostname or IPv4
Stack // address in standard dot notation
GetHostByName(name string) (netip.Addr, error)
}
// L4WifiInterface is returned by `Probe` function for devices that communicate
// on the OSI level 4 (transport) layer.
type L4WifiInterface interface {
InterfaceWifi
SocketStack
} }
type WifiParams struct { type WifiParams struct {
@@ -158,14 +167,6 @@ const (
AuthTypeWPA2Mixed // WPA2/WPA mixed authorization AuthTypeWPA2Mixed // WPA2/WPA mixed authorization
) )
type LinkStatus uint8
const (
LinkDown LinkStatus = iota
LinkConnecting
LinkUp
)
type WifiAutoconnectParams struct { type WifiAutoconnectParams struct {
WifiParams WifiParams
@@ -183,7 +184,7 @@ type WifiAutoconnectParams struct {
WatchdogTimeout time.Duration WatchdogTimeout time.Duration
} }
func StartWifiAutoconnect(dev Netdev, cfg WifiAutoconnectParams) error { func StartWifiAutoconnect(dev L4WifiInterface, cfg WifiAutoconnectParams) error {
if dev == nil { if dev == nil {
return ErrConnectModeNoGood return ErrConnectModeNoGood
} }
@@ -199,7 +200,7 @@ func StartWifiAutoconnect(dev Netdev, cfg WifiAutoconnectParams) error {
} }
for cfg.WatchdogTimeout != 0 { for cfg.WatchdogTimeout != 0 {
time.Sleep(cfg.WatchdogTimeout) time.Sleep(cfg.WatchdogTimeout)
if dev.LinkStatus() == LinkDown { if dev.Flags()&net.FlagRunning == 0 {
i = 0 i = 0
goto RECONNECT goto RECONNECT
} }