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pack packets into large buffers when GSO is available

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This commit is contained in:
Marten Seemann 2023-04-30 17:27:50 +02:00
parent 628ba87727
commit 5b5ffa942b
16 changed files with 339 additions and 186 deletions
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4
sys_conn_df_linux.go
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@ -60,7 +60,7 @@ func isMsgSizeErr(err error) bool {
return errors.Is(err, unix.EMSGSIZE)
}
func appendUDPSegmentSizeMsg(b []byte, size int) []byte {
func appendUDPSegmentSizeMsg(b []byte, size uint16) []byte {
startLen := len(b)
const dataLen = 2 // payload is a uint16
b = append(b, make([]byte, unix.CmsgSpace(dataLen))...)
@ -71,6 +71,6 @@ func appendUDPSegmentSizeMsg(b []byte, size int) []byte {
// UnixRights uses the private `data` method, but I *think* this achieves the same goal.
offset := startLen + unix.CmsgSpace(0)
*(*uint16)(unsafe.Pointer(&b[offset])) = uint16(size)
*(*uint16)(unsafe.Pointer(&b[offset])) = size
return b
}