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| author |   Gaurav Jain <gaurav.jain@nxp.com> | 2021-11-22 17:02:34 +0530 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2021-12-03 15:56:17 +1100 |
| commit | 087e1d715bccf25dc0e83294576e416b0386ba20 (patch) | |
| tree | 7d5355ef1eb6651db2b7406712109b882bcfb9ab /drivers/crypto/caam/caamalg.c | |
| parent | crypto: des - disallow des3 in FIPS mode (diff) | |
| download | linux-dev-087e1d715bccf25dc0e83294576e416b0386ba20.tar.xz linux-dev-087e1d715bccf25dc0e83294576e416b0386ba20.zip | |
crypto: caam - save caam memory to support crypto engine retry mechanism.
When caam queue is full (-ENOSPC), caam frees descriptor memory.
crypto-engine checks if retry support is true and h/w queue
is full(-ENOSPC), then requeue the crypto request.
During processing the requested descriptor again, caam gives below error.
(caam_jr 30902000.jr: 40000006: DECO: desc idx 0: Invalid KEY Command).
This patch adds a check to return when caam input ring is full
and retry support is true. so descriptor memory is not freed
and requeued request can be processed again.
Fixes: 2d653936eb2cf ("crypto: caam - enable crypto-engine retry mechanism")
Signed-off-by: Gaurav Jain <gaurav.jain@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/caamalg.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 8697ae53b063..d3d8bb0a6990 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1533,6 +1533,9 @@ static int aead_do_one_req(struct crypto_engine *engine, void *areq) ret = caam_jr_enqueue(ctx->jrdev, desc, aead_crypt_done, req); + if (ret == -ENOSPC && engine->retry_support) + return ret; + if (ret != -EINPROGRESS) { aead_unmap(ctx->jrdev, rctx->edesc, req); kfree(rctx->edesc); @@ -1762,6 +1765,9 @@ static int skcipher_do_one_req(struct crypto_engine *engine, void *areq) ret = caam_jr_enqueue(ctx->jrdev, desc, skcipher_crypt_done, req); + if (ret == -ENOSPC && engine->retry_support) + return ret; + if (ret != -EINPROGRESS) { skcipher_unmap(ctx->jrdev, rctx->edesc, req); kfree(rctx->edesc); |