Messages in this thread | | | From | Aurélien Aptel <> | Subject | RE: [PATCH] cifs: Remove locking in smb2_verify_signature() when calculating SMB2/SMB3 signature on receiving packets | Date | Fri, 27 Mar 2020 12:05:23 +0100 |
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Long Li <longli@microsoft.com> writes: >>need for locks). AFAIK there's no state that need to be kept between >>signing/encrypting calls beside the access to keys. Is it that expensive to >>create/release? > > My guess is that crypto_alloc_shash() is a heavy call?
AFAIK there's no IO, just some memory allocation. Could be faster than locking. Something to look into, maybe...
Cheers, -- Aurélien Aptel / SUSE Labs Samba Team GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, DE GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 247165 (AG München)
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