IN_PKTINFO decoding

Dmitry V. Levin ldv at
Wed Nov 18 22:23:55 UTC 2015

On Wed, Nov 18, 2015 at 06:09:09PM +0000, Orion Poplawski wrote:
> It doesn't appear that strace currently decodes IN_PKTINFO information on
> recvmsg/sendto calls.  Is that correct?

Yes, the only cmsg decoding we have now is for cmsg_level == SOL_SOCKET types.

> How hard would it be to add it?

There is a function in the code called printcmsghdr, it could be extended
to handle other cmsg_level values I suppose.

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