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| author | Vakul Garg <vakul.garg@nxp.com> | 2018-01-31 21:34:37 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-31 10:26:30 -0500 |
| commit | a54667f6728c2714a400f3c884727da74b6d1717 (patch) | |
| tree | 5c722a9de6ef67c3ba7304516838b7e5ae1631d7 /net/tls | |
| parent | 4adfa79fc254efb7b0eb3cd58f62c2c3f805f1ba (diff) | |
| download | linux-0-day-a54667f6728c2714a400f3c884727da74b6d1717.tar.gz linux-0-day-a54667f6728c2714a400f3c884727da74b6d1717.tar.xz | |
tls: Add support for encryption using async offload accelerator
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 <vakul.garg@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
| -rw-r--r-- | net/tls/tls_sw.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 0a9b72fbd761f..f26376e954aec 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -214,7 +214,11 @@ static int tls_do_encryption(struct tls_context *tls_ctx, aead_request_set_ad(aead_req, TLS_AAD_SPACE_SIZE); aead_request_set_crypt(aead_req, ctx->sg_aead_in, ctx->sg_aead_out, data_len, tls_ctx->iv); - rc = crypto_aead_encrypt(aead_req); + + aead_request_set_callback(aead_req, CRYPTO_TFM_REQ_MAY_BACKLOG, + crypto_req_done, &ctx->async_wait); + + rc = crypto_wait_req(crypto_aead_encrypt(aead_req), &ctx->async_wait); ctx->sg_encrypted_data[0].offset -= tls_ctx->prepend_size; ctx->sg_encrypted_data[0].length += tls_ctx->prepend_size; @@ -665,6 +669,8 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx) goto out; } + crypto_init_wait(&sw_ctx->async_wait); + ctx->priv_ctx = (struct tls_offload_context *)sw_ctx; crypto_info = &ctx->crypto_send; |