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Fix for async edge case with Intel QuickAssist/Cavium Nitrox that was broken in PR #6783. Was causing re-entry and multiple calls for some operations like DH KeyGen that don't advance state on completion. https://github.com/wolfSSL/wolfAsyncCrypt/pull/71

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This commit is contained in:
David Garske
2023-10-31 12:43:12 -07:00
parent 0455224439
commit 2ac0d47908
1 changed files with 11 additions and 2 deletions
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13
src/internal.c
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@ -7624,6 +7624,12 @@ int AllocKey(WOLFSSL* ssl, int type, void** pKey)
/* Sanity check key destination */
if (*pKey != NULL) {
WOLFSSL_MSG("Key already present!");
#ifdef WOLFSSL_ASYNC_CRYPT
/* allow calling this again for async reentry */
if (ssl->error == WC_PENDING_E) {
return 0;
}
#endif
return BAD_STATE_E;
}
@ -38891,14 +38897,17 @@ int wolfSSL_AsyncPop(WOLFSSL* ssl, byte* state)
XMEMSET(&asyncDev->event, 0, sizeof(WOLF_EVENT));
ssl->asyncDev = NULL;
}
#if !defined(WOLFSSL_ASYNC_CRYPT_SW) && \
(defined(WOLF_CRYPTO_CB) || defined(HAVE_PK_CALLBACKS))
/* for crypto or PK callback, if pending remove from queue */
#if (defined(WOLF_CRYPTO_CB) || defined(HAVE_PK_CALLBACKS)) && \
!defined(WOLFSSL_ASYNC_CRYPT_SW) && !defined(HAVE_INTEL_QA) && \
!defined(HAVE_CAVIUM)
else if (ret == WC_PENDING_E) {
/* Allow the underlying crypto API to be called again to trigger the
* crypto or PK callback. The actual callback must be called, since
* the completion is not detected in the poll like Intel QAT or
* Nitrox */
ret = wolfEventQueue_Remove(&ssl->ctx->event_queue, event);
}
#endif
}