diff options
Diffstat (limited to 'pkg/tcpip/network/ipv4/icmp.go')
| -rw-r--r-- | pkg/tcpip/network/ipv4/icmp.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/pkg/tcpip/network/ipv4/icmp.go b/pkg/tcpip/network/ipv4/icmp.go index 204b182e6..488945226 100644 --- a/pkg/tcpip/network/ipv4/icmp.go +++ b/pkg/tcpip/network/ipv4/icmp.go @@ -514,3 +514,18 @@ func (p *protocol) returnError(reason icmpReason, pkt *stack.PacketBuffer) *tcpi counter.Increment() return nil } + +// OnReassemblyTimeout implements fragmentation.TimeoutHandler. +func (p *protocol) OnReassemblyTimeout(pkt *stack.PacketBuffer) { + // OnReassemblyTimeout sends a Time Exceeded Message, as per RFC 792: + // + // If a host reassembling a fragmented datagram cannot complete the + // reassembly due to missing fragments within its time limit it discards the + // datagram, and it may send a time exceeded message. + // + // If fragment zero is not available then no time exceeded need be sent at + // all. + if pkt != nil { + p.returnError(&icmpReasonReassemblyTimeout{}, pkt) + } +} |