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[net-next,v3,0/1] net/tls: Combined memory allocation for decryption request

Message ID 20180810151641.14580-1-vakul.garg@nxp.com
Headers show
Series net/tls: Combined memory allocation for decryption request | expand

Message

Vakul Garg Aug. 10, 2018, 3:16 p.m. UTC 
This patch does a combined memory allocation from heap for scatterlists,
aead_request, aad and iv for the tls record decryption path. In present
code, aead_request is allocated from heap, scatterlists on a conditional
basis are allocated on heap or on stack. This is inefficient as it may
requires multiple kmalloc/kfree.

The initialization vector passed in cryption request is allocated on
stack. This is a problem since the stack memory is not dma-able from
crypto accelerators.

Doing one combined memory allocation for each decryption request fixes
both the above issues. It also paves a way to be able to submit multiple
async decryption requests while the previous one is pending i.e. being 
processed or queued.


Vakul Garg (1):
  net/tls: Combined memory allocation for decryption request

 include/net/tls.h |   4 -
 net/tls/tls_sw.c  | 238 ++++++++++++++++++++++++++++++++----------------------
 2 files changed, 142 insertions(+), 100 deletions(-)