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tls: Add support for encryption using async offload accelerator

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Async crypto accelerators (e.g. drivers/crypto/caam) support offloading
GCM operation. If they are enabled, crypto_aead_encrypt() return error
code -EINPROGRESS. In this case tls_do_encryption() needs to wait on a
completion till the time the response for crypto offload request is
received.

Signed-off-by: Vakul Garg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Vakul Garg 2018-01-31 21:34:37 +05:30 • committed by David S. Miller
commit a54667f672
2 changed files with 9 additions and 1 deletions
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2
include/net/tls.h
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@ -36,6 +36,7 @@
#include <linux/types.h>
#include <asm/byteorder.h>
#include <linux/crypto.h>
#include <linux/socket.h>
#include <linux/tcp.h>
#include <net/tcp.h>
@ -57,6 +58,7 @@
struct tls_sw_context {
struct crypto_aead *aead_send;
struct crypto_wait async_wait;
/* Sending context */
char aad_space[TLS_AAD_SPACE_SIZE];