[PATCH 10/18] nvme-tcp: fixup send workflow for kTLS
Sagi Grimberg
sagi at grimberg.me
Thu Mar 30 08:24:04 PDT 2023
> kTLS does not support MSG_EOR flag for sendmsg(), and in general
> is really picky about invalid MSG_XXX flags.
CC'ing TLS folks.
Can't tls simply ignore MSG_EOR instead of consumers having to be
careful over it?
> So ensure that the MSG_EOR flags is blanked out for TLS, and that
> the MSG_SENDPAGE_LAST is only set if we actually do sendpage().
You mean MSG_SENDPAGE_NOTLAST.
It is also a bit annoying that a tls socket dictates different behavior
than a normal socket.
The current logic is rather simple:
if more data comming:
flags = MSG_MORE | MSG_SENDPAGE_NOTLAST
else:
flags = MSG_EOR
Would like to keep it that way for tls as well. Can someone
explain why this is a problem with tls?
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