Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH] cifs: Fix problem with encrypted RDMA data read | Date | Wed, 16 Nov 2022 07:00:19 +0000 |
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Stefan Metzmacher <metze@samba.org> wrote:
> I'm not sure I understand why this would fix anything when encryption is > enabled. > > Is the payload still be offloaded as plaintext? Otherwise we wouldn't have > use_rdma_mr... So this rather looks like a fix for the non encrypted case.
The "inline"[*] PDUs are encrypted, but the direct RDMA data transmission is not. I'm not sure if this is a bug in ksmbd. As I understand it, encrypting and decrypting the directly transferred data would need to be done by the NIC, not the cifs driver.
David
[*] I don't know the correct RDMA terminology for these things.
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