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crypto service: Add documentation

pull/9529/head
itayzafrir 2019-01-31 11:00:45 +02:00 committed by Oren Cohen
parent ea9f104463
commit b7b85516cb
1 changed files with 6 additions and 0 deletions
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6
components/TARGET_PSA/services/crypto/COMPONENT_SPE/psa_crypto_partition.c
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@ -36,6 +36,11 @@ static psa_spm_hash_clone_t psa_spm_hash_clones[MAX_CONCURRENT_HASH_CLONES];
// ------------------------- Internal Helper Functions ------------------------- // ------------------------- Internal Helper Functions -------------------------
static inline psa_status_t reserve_hash_clone(int32_t partition_id, void *source_operation, size_t *index) static inline psa_status_t reserve_hash_clone(int32_t partition_id, void *source_operation, size_t *index)
{ {
/* check if the the clone request source operation is already part of another active clone operation,
* for the same source, if so then reuse it and increment its ref_count by 1. A scenario as such may happen
* in case there was a context switch between calls of PSA_HASH_CLONE_BEGIN and PSA_HASH_CLONE_END (on the
* client side) leading to PSA_HASH_CLONE_BEGIN being executed more than one time without a call to
* PSA_HASH_CLONE_END */
for (*index = 0; *index < MAX_CONCURRENT_HASH_CLONES; (*index)++) { for (*index = 0; *index < MAX_CONCURRENT_HASH_CLONES; (*index)++) {
if (psa_spm_hash_clones[*index].partition_id == partition_id && if (psa_spm_hash_clones[*index].partition_id == partition_id &&
psa_spm_hash_clones[*index].source_operation == source_operation) { psa_spm_hash_clones[*index].source_operation == source_operation) {
@ -44,6 +49,7 @@ static inline psa_status_t reserve_hash_clone(int32_t partition_id, void *source
} }
} }
/* find an available empty entry in the array */
for (*index = 0; *index < MAX_CONCURRENT_HASH_CLONES; (*index)++) { for (*index = 0; *index < MAX_CONCURRENT_HASH_CLONES; (*index)++) {
if (psa_spm_hash_clones[*index].partition_id == 0 && if (psa_spm_hash_clones[*index].partition_id == 0 &&
psa_spm_hash_clones[*index].source_operation == NULL) { psa_spm_hash_clones[*index].source_operation == NULL) {