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Error rewrites (#43)

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* pcap: reuse Frame memory

* slog: reduce heap allocations of addresses; also prevent heap alloc of dhcp options in pcap

* dns: heapless improvement; add StackAsync buffer for more heapless operation; start thinking of errors

* errors: begin standardise errors in lneto

* errors: finish standardization of errors

* fix merge issues

* add more lneto errors to rest of package

* format errors.go
This commit is contained in:
Pat Whittingslow
2026-02-28 20:18:27 +01:00
committed by GitHub
parent 3d0bc93cbe
commit fa5ba918bb
38 changed files with 272 additions and 322 deletions
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tcp/definitions.go
+12 -12
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@@ -6,24 +6,24 @@ import (
"math/bits"
"strconv"
"unsafe"
"github.com/soypat/lneto"
)
//go:generate stringer -type=State,OptionKind -linecomment -output stringers.go .
var (
// errDropSegment is a flag that signals to drop a segment silently.
errDropSegment = errors.New("drop segment")
errWindowTooLarge = errors.New("invalid window size > 2**16")
errDropSegment error = lneto.ErrPacketDrop
errWindowTooLarge = errors.New("invalid window size > 2**16")
errBufferTooSmall = errors.New("tcp buffer too small")
errNeedClosedTCBToOpen = errors.New("need closed TCB to call open")
errInvalidState = errors.New("invalid state")
errConnNotExist = errors.New("connection does not exist")
errConnectionClosing = errors.New("connection closing")
errExpectedSYN = errors.New("seqs:expected SYN")
errBadSegack = errors.New("seqs:bad segack")
errFinwaitExpectedACK = errors.New("seqs:finwait1 expected ACK")
errFinwaitExpectedFinack = errors.New("seqs:finwait2 expected FINACK")
errBufferTooSmall error = lneto.ErrShortBuffer
errNeedClosedTCBToOpen = errors.New("need closed TCB to call open")
errInvalidState = errors.New("invalid state")
errConnNotExist = errors.New("connection does not exist")
errConnectionClosing = errors.New("connection closing")
errExpectedSYN = errors.New("seqs:expected SYN")
errBadSegack = errors.New("seqs:bad segack")
errFinwaitExpectedACK = errors.New("seqs:finwait1 expected ACK")
errWindowOverflow = newRejectErr("wnd > 2**16")
errSeqNotInWindow = newRejectErr("seq not in snd/rcv.wnd")