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Merge pull request #8876 from philljj/small_drbg_cleanup

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linuxkm drbg: refactor drbg_ctx clear.
This commit is contained in:
Daniel Pouzzner
2025-06-16 16:33:57 -05:00
committed by GitHub
parent 842e2366e3 41965750c8
commit 3e5e470005
1 changed files with 18 additions and 15 deletions
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33
linuxkm/lkcapi_sha_glue.c
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@ -946,6 +946,22 @@ struct wc_linuxkm_drbg_ctx {
} *rngs; /* one per CPU ID */ } *rngs; /* one per CPU ID */
}; };
static inline void wc_linuxkm_drbg_ctx_clear(struct wc_linuxkm_drbg_ctx * ctx)
{
unsigned int i;
if (ctx->rngs) {
for (i = 0; i < nr_cpu_ids; ++i) {
(void)wc_FreeMutex(&ctx->rngs[i].lock);
wc_FreeRng(&ctx->rngs[i].rng);
}
free(ctx->rngs);
ctx->rngs = NULL;
}
return;
}
static int wc_linuxkm_drbg_init_tfm(struct crypto_tfm *tfm) static int wc_linuxkm_drbg_init_tfm(struct crypto_tfm *tfm)
{ {
struct wc_linuxkm_drbg_ctx *ctx = (struct wc_linuxkm_drbg_ctx *)crypto_tfm_ctx(tfm); struct wc_linuxkm_drbg_ctx *ctx = (struct wc_linuxkm_drbg_ctx *)crypto_tfm_ctx(tfm);
@ -975,12 +991,7 @@ static int wc_linuxkm_drbg_init_tfm(struct crypto_tfm *tfm)
} }
if (ret != 0) { if (ret != 0) {
for (i = 0; i < nr_cpu_ids; ++i) { wc_linuxkm_drbg_ctx_clear(ctx);
(void)wc_FreeMutex(&ctx->rngs[i].lock);
wc_FreeRng(&ctx->rngs[i].rng);
}
free(ctx->rngs);
ctx->rngs = NULL;
} }
return ret; return ret;
@ -989,16 +1000,8 @@ static int wc_linuxkm_drbg_init_tfm(struct crypto_tfm *tfm)
static void wc_linuxkm_drbg_exit_tfm(struct crypto_tfm *tfm) static void wc_linuxkm_drbg_exit_tfm(struct crypto_tfm *tfm)
{ {
struct wc_linuxkm_drbg_ctx *ctx = (struct wc_linuxkm_drbg_ctx *)crypto_tfm_ctx(tfm); struct wc_linuxkm_drbg_ctx *ctx = (struct wc_linuxkm_drbg_ctx *)crypto_tfm_ctx(tfm);
unsigned int i;
if (ctx->rngs) { wc_linuxkm_drbg_ctx_clear(ctx);
for (i = 0; i < nr_cpu_ids; ++i) {
(void)wc_FreeMutex(&ctx->rngs[i].lock);
wc_FreeRng(&ctx->rngs[i].rng);
}
free(ctx->rngs);
ctx->rngs = NULL;
}
return; return;
} }