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-rw-r--r--src/crypto/qat/qcccrypto.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/src/crypto/qat/qcccrypto.h b/src/crypto/qat/qcccrypto.h
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+++ b/src/crypto/qat/qcccrypto.h
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+#ifndef QCCCRYPTO_H
+#define QCCCRYPTO_H
+
+#include <atomic>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <queue>
+extern "C" {
+#include "cpa.h"
+#include "lac/cpa_cy_sym.h"
+#include "lac/cpa_cy_im.h"
+#include "qae_mem.h"
+#include "icp_sal_user.h"
+#include "icp_sal_poll.h"
+#include "qae_mem_utils.h"
+}
+
+class QccCrypto {
+
+ public:
+ CpaCySymCipherDirection qcc_op_type;
+
+ QccCrypto() {};
+ ~QccCrypto() {};
+
+ bool init();
+ bool destroy();
+ bool perform_op(unsigned char* out, const unsigned char* in, size_t size,
+ uint8_t *iv,
+ uint8_t *key,
+ CpaCySymCipherDirection op_type);
+
+ private:
+
+ // Currently only supporting AES_256_CBC.
+ // To-Do: Needs to be expanded
+ static const size_t AES_256_IV_LEN = 16;
+ static const size_t AES_256_KEY_SIZE = 32;
+ static const size_t QCC_MAX_RETRIES = 5000;
+
+ /*
+ * Struct to hold an instance of QAT to handle the crypto operations. These
+ * will be identified at the start and held until the destructor is called
+ * To-Do:
+ * The struct was creating assuming that we will use all the instances.
+ * Expand current implementation to allow multiple instances to operate
+ * independently.
+ */
+ struct QCCINST {
+ CpaInstanceHandle *cy_inst_handles;
+ CpaBoolean *is_polled;
+ Cpa16U num_instances;
+ } *qcc_inst;
+
+ /*
+ * QAT Crypto Session
+ * Crypto Session Context and setupdata holds
+ * priority, type of crypto operation (cipher/chained),
+ * cipher algorithm (AES, DES, etc),
+ * single crypto or multi-buffer crypto.
+ */
+ struct QCCSESS {
+ CpaCySymSessionSetupData sess_stp_data;
+ Cpa32U sess_ctx_sz;
+ CpaCySymSessionCtx sess_ctx;
+ } *qcc_sess;
+
+ /*
+ * Cipher Memory Allocations
+ * Holds bufferlist, flatbuffer, cipher opration data and buffermeta needed
+ * by QAT to perform the operation. Also buffers for IV, SRC, DEST.
+ */
+ struct QCCOPMEM {
+ // Op common items
+ bool is_mem_alloc;
+ bool op_complete;
+ CpaStatus op_result;
+ CpaCySymOpData *sym_op_data;
+ Cpa32U buff_meta_size;
+ Cpa32U num_buffers;
+ Cpa32U buff_size;
+
+ //Src data items
+ Cpa8U *src_buff_meta;
+ CpaBufferList *src_buff_list;
+ CpaFlatBuffer *src_buff_flat;
+ Cpa8U *src_buff;
+ Cpa8U *iv_buff;
+ } *qcc_op_mem;
+
+ //QAT HW polling thread input structure
+ struct qcc_thread_args {
+ QccCrypto* qccinstance;
+ int entry;
+ };
+
+
+ /*
+ * Function to handle the crypt operation. Will run while the main thread
+ * runs the polling function on the instance doing the op
+ */
+ void do_crypt(qcc_thread_args *thread_args);
+
+ /*
+ * Handle queue with free instances to handle op
+ */
+ std::queue<int> open_instances;
+ int QccGetFreeInstance();
+ void QccFreeInstance(int entry);
+
+ /*
+ * Contiguous Memory Allocator and de-allocator. We are using the usdm
+ * driver that comes along with QAT to get us direct memory access using
+ * hugepages.
+ * To-Do: A kernel based one.
+ */
+ static inline void qcc_contig_mem_free(void **ptr) {
+ if (*ptr) {
+ qaeMemFreeNUMA(ptr);
+ *ptr = NULL;
+ }
+ }
+
+ static inline CpaStatus qcc_contig_mem_alloc(void **ptr, Cpa32U size, Cpa32U alignment = 1) {
+ *ptr = qaeMemAllocNUMA(size, 0, alignment);
+ if (NULL == *ptr)
+ {
+ return CPA_STATUS_RESOURCE;
+ }
+ return CPA_STATUS_SUCCESS;
+ }
+
+ /*
+ * Malloc & free calls masked to maintain consistency and future kernel
+ * alloc support.
+ */
+ static inline void qcc_os_mem_free(void **ptr) {
+ if (*ptr) {
+ free(*ptr);
+ *ptr = NULL;
+ }
+ }
+
+ static inline CpaStatus qcc_os_mem_alloc(void **ptr, Cpa32U size) {
+ *ptr = malloc(size);
+ if (*ptr == NULL)
+ {
+ return CPA_STATUS_RESOURCE;
+ }
+ return CPA_STATUS_SUCCESS;
+ }
+
+ std::atomic<bool> is_init = { false };
+ CpaStatus init_stat, stat;
+
+ /*
+ * Function to cleanup memory if constructor fails
+ */
+ void cleanup();
+
+ /*
+ * Crypto Polling Function & helpers
+ * This helps to retrieve data from the QAT rings and dispatching the
+ * associated callbacks. For synchronous operation (like this one), QAT
+ * library creates an internal callback for the operation.
+ */
+ static void* crypt_thread(void* entry);
+ CpaStatus QccCyStartPoll(int entry);
+ void poll_instance(int entry);
+
+ pthread_t *cypollthreads;
+ static const size_t qcc_sleep_duration = 2;
+};
+#endif //QCCCRYPTO_H