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major ARP Handler refactor; DNS improvements; bridge example rework

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soypat
2025-07-09 22:49:13 -03:00
parent 70731c2ffa
commit a257becf15
10 changed files with 223 additions and 127 deletions
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dhcpv4/client.go
+19 -12
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@@ -8,6 +8,7 @@ import (
"math"
"math/bits"
"net"
"net/netip"
"github.com/soypat/lneto"
"github.com/soypat/lneto/ipv4"
@@ -17,7 +18,7 @@ type Client struct {
connID uint64
reqHostname string
hostname []byte
dns [][4]byte
dns []netip.Addr
svIPtos ipv4.ToS
tRenew uint32
@@ -253,7 +254,7 @@ func (c *Client) setOptions(frm Frame) error {
return nil // No DNS parsing if already got in previous exchange.
}
for i := 0; i < len(data); i += 4 {
c.dns = append(c.dns, [4]byte(data[i:i+4]))
c.dns = append(c.dns, netip.AddrFrom4([4]byte(data[i:i+4])))
}
}
return nil
@@ -301,16 +302,22 @@ func (c *Client) reset(xid uint32) {
func (d *Client) State() ClientState { return d.state }
func (d *Client) BroadcastAddr() [4]byte { return d.broadcast }
func (d *Client) AssignedAddr() [4]byte { return d.offer }
func (d *Client) ServerAddr() [4]byte { return d.svip }
func (d *Client) RouterAddr() [4]byte { return d.router }
func (d *Client) GatewayAddr() [4]byte { return d.gateway }
func (d *Client) RebindingSeconds() uint32 { return d.tRebind }
func (d *Client) RenewalSeconds() uint32 { return d.tRenew }
func (d *Client) IPLeaseSeconds() uint32 { return d.tIPLease }
func (d *Client) AppendDNSServers(dst [][4]byte) [][4]byte { return append(dst, d.dns...) }
func (d *Client) BroadcastAddr() [4]byte { return d.broadcast }
func (d *Client) AssignedAddr() [4]byte { return d.offer }
func (d *Client) ServerAddr() [4]byte { return d.svip }
func (d *Client) RouterAddr() [4]byte { return d.router }
func (d *Client) GatewayAddr() [4]byte { return d.gateway }
func (d *Client) RebindingSeconds() uint32 { return d.tRebind }
func (d *Client) RenewalSeconds() uint32 { return d.tRenew }
func (d *Client) IPLeaseSeconds() uint32 { return d.tIPLease }
func (d *Client) AppendDNSServers(dst []netip.Addr) []netip.Addr { return append(dst, d.dns...) }
func (d *Client) NumDNSServers() int { return len(d.dns) }
func (d *Client) DNSServerFirst() netip.Addr {
if len(d.dns) < 1 {
return netip.Addr{}
}
return d.dns[0]
}
func (d *Client) CIDRBits() uint8 {
if d.subnet == [4]byte{} {
return 0