> On 2 Jun 2023, at 19:51, Alexander Bluhm wrote:
>
> On Wed, May 31, 2023 at 09:36:22AM +1000, David Gwynne wrote:
>> we could export these csum flags as part of the bpf header so we can
>> teach tcpdump to shut up in this situation.
>
> Linux does not do that and I want to keep pcap file
On Wed, May 31, 2023 at 09:36:22AM +1000, David Gwynne wrote:
> we could export these csum flags as part of the bpf header so we can
> teach tcpdump to shut up in this situation.
Linux does not do that and I want to keep pcap file format compatible.
Also smart tools make debugging real checksum
On Thu, Jun 01, 2023 at 04:38:53PM +, Peter Stuge wrote:
> David Gwynne wrote:
> > > Currently packets sent over loopback interface get their checksum
> > > calculated twice. In the output path it is set and during TCP/IP
> > > input it is calculated again to be compared with the previous
David Gwynne wrote:
> > Currently packets sent over loopback interface get their checksum
> > calculated twice. In the output path it is set and during TCP/IP
> > input it is calculated again to be compared with the previous value.
..
> > The question is, does it break corner cases? Please test
On Tue, May 30, 2023 at 09:08:45PM +0200, Alexander Bluhm wrote:
> Hi,
>
> Currently packets sent over loopback interface get their checksum
> calculated twice. In the output path it is set and during TCP/IP
> input it is calculated again to be compared with the previous value.
>
> This can be
