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make a lil less garbage

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This commit is contained in:
JackDoan
2025-11-14 13:28:38 -06:00
parent dab4745365
commit c93fbbe726
1 changed files with 30 additions and 18 deletions
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48
udp/udp_linux.go
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@@ -24,6 +24,9 @@ type StdConn struct {
l *logrus.Logger
batch int
enableGRO bool
msgs []rawMessage
iovs [][]iovec
}
func NewListener(l *logrus.Logger, ip netip.Addr, port int, multi bool, batch int) (Conn, error) {
@@ -63,7 +66,16 @@ func NewListener(l *logrus.Logger, ip netip.Addr, port int, multi bool, batch in
return nil, fmt.Errorf("unable to bind to socket: %s", err)
}
return &StdConn{sysFd: fd, isV4: ip.Is4(), l: l, batch: batch}, err
msgs := make([]rawMessage, 0, 8192) //todo configure
iovs := make([][]iovec, 0, len(msgs))
return &StdConn{
sysFd: fd,
isV4: ip.Is4(),
l: l,
batch: batch,
msgs: msgs,
iovs: iovs,
}, err
}
func (u *StdConn) Rebind() error {
@@ -207,8 +219,8 @@ func (u *StdConn) WriteBatch(pkts []*packet.Packet) (int, error) {
return 0, nil
}
msgs := make([]rawMessage, 0, len(pkts)) //todo recycle
iovs := make([][]iovec, 0, len(pkts))
u.msgs = u.msgs[:0]
u.iovs = u.iovs[:0]
sent := 0
const maxIovLen = 48
@@ -221,26 +233,26 @@ func (u *StdConn) WriteBatch(pkts []*packet.Packet) (int, error) {
continue
}
lastIdx := idx - 1
if mostRecentPkt != nil && pkt.CompatibleForSegmentationWith(mostRecentPkt) && msgs[lastIdx].Hdr.Iovlen < maxIovLen { //todo math this more good
if mostRecentPkt != nil && pkt.CompatibleForSegmentationWith(mostRecentPkt) && u.msgs[lastIdx].Hdr.Iovlen < maxIovLen { //todo math this more good
msgs[lastIdx].Hdr.Controllen = uint64(len(mostRecentPkt.Control))
msgs[lastIdx].Hdr.Control = &mostRecentPkt.Control[0]
msgs[lastIdx].Hdr.Iovlen++
iovs[lastIdx] = append(iovs[lastIdx], iovec{
u.msgs[lastIdx].Hdr.Controllen = uint64(len(mostRecentPkt.Control))
u.msgs[lastIdx].Hdr.Control = &mostRecentPkt.Control[0]
u.msgs[lastIdx].Hdr.Iovlen++
u.iovs[lastIdx] = append(u.iovs[lastIdx], iovec{
Base: &pkt.Payload[0],
Len: uint64(len(pkt.Payload)),
})
mostRecentPkt.SetSegSizeForTX()
} else {
msgs = append(msgs, rawMessage{})
iovs = append(iovs, make([]iovec, 1, maxIovLen)) //todo
iovs[idx][0] = iovec{
u.msgs = append(u.msgs, rawMessage{})
u.iovs = append(u.iovs, make([]iovec, 1, maxIovLen)) //todo less garbage
u.iovs[idx][0] = iovec{
Base: &pkt.Payload[0],
Len: uint64(len(pkt.Payload)),
}
msg := &msgs[idx]
iov := &iovs[idx][0]
msg := &u.msgs[idx]
iov := &u.iovs[idx][0]
idx++
msg.Hdr.Iov = iov
@@ -255,17 +267,17 @@ func (u *StdConn) WriteBatch(pkts []*packet.Packet) (int, error) {
}
if len(msgs) == 0 {
if len(u.msgs) == 0 {
return sent, nil
}
offset := 0
for offset < len(msgs) {
for offset < len(u.msgs) {
n, _, errno := unix.Syscall6(
unix.SYS_SENDMMSG,
uintptr(u.sysFd),
uintptr(unsafe.Pointer(&msgs[offset])),
uintptr(len(msgs)-offset),
uintptr(unsafe.Pointer(&u.msgs[offset])),
uintptr(len(u.msgs)-offset),
0,
0,
0,
@@ -284,7 +296,7 @@ func (u *StdConn) WriteBatch(pkts []*packet.Packet) (int, error) {
offset += int(n)
}
return sent + len(msgs), nil
return sent + len(u.msgs), nil
}
func (u *StdConn) encodeSockaddr(dst []byte, addr netip.AddrPort) (uint32, error) {