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altcp: mbedtls: no need for SYS_ARCH locking

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This commit is contained in:
Simon Goldschmidt 2020-03-05 21:48:08 +01:00
parent 33f2b313c7
commit 34352e9649
1 changed files with 6 additions and 11 deletions
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17
src/apps/altcp_tls/altcp_tls_mbedtls.c
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@ -720,8 +720,8 @@ altcp_mbedtls_debug(void *ctx, int level, const char *file, int line, const char
static err_t static err_t
altcp_mbedtls_ref_entropy(void) altcp_mbedtls_ref_entropy(void)
{ {
SYS_ARCH_DECL_PROTECT(old_level); LWIP_ASSERT_CORE_LOCKED();
SYS_ARCH_PROTECT(old_level);
if (!altcp_tls_entropy_rng) { if (!altcp_tls_entropy_rng) {
altcp_tls_entropy_rng = (struct altcp_tls_entropy_rng *)altcp_mbedtls_alloc_config(sizeof(struct altcp_tls_entropy_rng)); altcp_tls_entropy_rng = (struct altcp_tls_entropy_rng *)altcp_mbedtls_alloc_config(sizeof(struct altcp_tls_entropy_rng));
if (altcp_tls_entropy_rng) { if (altcp_tls_entropy_rng) {
@ -739,29 +739,25 @@ altcp_mbedtls_ref_entropy(void)
mbedtls_entropy_free(&altcp_tls_entropy_rng->entropy); mbedtls_entropy_free(&altcp_tls_entropy_rng->entropy);
altcp_mbedtls_free_config(altcp_tls_entropy_rng); altcp_mbedtls_free_config(altcp_tls_entropy_rng);
altcp_tls_entropy_rng = NULL; altcp_tls_entropy_rng = NULL;
SYS_ARCH_UNPROTECT(old_level);
return ERR_ARG; return ERR_ARG;
} }
} else { } else {
SYS_ARCH_UNPROTECT(old_level);
return ERR_MEM; return ERR_MEM;
} }
} else { } else {
altcp_tls_entropy_rng->ref++; altcp_tls_entropy_rng->ref++;
} }
SYS_ARCH_UNPROTECT(old_level);
return ERR_OK; return ERR_OK;
} }
static void static void
altcp_mbedtls_unref_entropy(void) altcp_mbedtls_unref_entropy(void)
{ {
SYS_ARCH_DECL_PROTECT(old_level); LWIP_ASSERT_CORE_LOCKED();
SYS_ARCH_PROTECT(old_level);
if (altcp_tls_entropy_rng && altcp_tls_entropy_rng->ref) { if (altcp_tls_entropy_rng && altcp_tls_entropy_rng->ref) {
altcp_tls_entropy_rng->ref--; altcp_tls_entropy_rng->ref--;
} }
SYS_ARCH_UNPROTECT(old_level);
} }
/** Create new TLS configuration /** Create new TLS configuration
@ -1053,15 +1049,14 @@ altcp_tls_free_config(struct altcp_tls_config *conf)
void void
altcp_tls_free_entropy(void) altcp_tls_free_entropy(void)
{ {
SYS_ARCH_DECL_PROTECT(old_level); LWIP_ASSERT_CORE_LOCKED();
SYS_ARCH_PROTECT(old_level);
if (altcp_tls_entropy_rng && altcp_tls_entropy_rng->ref == 0) { if (altcp_tls_entropy_rng && altcp_tls_entropy_rng->ref == 0) {
mbedtls_ctr_drbg_free(&altcp_tls_entropy_rng->ctr_drbg); mbedtls_ctr_drbg_free(&altcp_tls_entropy_rng->ctr_drbg);
mbedtls_entropy_free(&altcp_tls_entropy_rng->entropy); mbedtls_entropy_free(&altcp_tls_entropy_rng->entropy);
altcp_mbedtls_free_config(altcp_tls_entropy_rng); altcp_mbedtls_free_config(altcp_tls_entropy_rng);
altcp_tls_entropy_rng = NULL; altcp_tls_entropy_rng = NULL;
} }
SYS_ARCH_UNPROTECT(old_level);
} }
/* "virtual" functions */ /* "virtual" functions */