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infra: retry digesting after uncaught errors

This commit is contained in:
Thomas Schoebel-Theuer 2022-02-24 21:30:21 +01:00
parent 5a212753e6
commit bde27c499c
1 changed files with 16 additions and 0 deletions
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16
kernel/mars_generic.c
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@ -423,10 +423,12 @@ long mars_digest(__u32 digest_flags,
const void *data, int len)
{
long res;
bool did_retry = false;
/* The order defines the preference:
* place the most performant algorithms first.
*/
retry:
#ifdef HAS_CRC32C
if (digest_flags & MREF_CHKSUM_CRC32C && crc32c_tfm) {
res = crc32c_digest(digest, data, len);
@ -474,6 +476,20 @@ long mars_digest(__u32 digest_flags,
res = md5_old_digest(digest, data, len);
if (used_flags)
*used_flags = MREF_CHKSUM_MD5_OLD;
/* retry any error, provided the flags can be extended */
if (res < 0 && !did_retry) {
__u32 retry_flags = (usable_digest_mask & ~digest_flags);
if (!retry_flags)
goto done;
did_retry = true;
MARS_WRN("RETRY digest after error=%ld flags: 0x%x &= ~0x%x = 0x%x\n",
res,
usable_digest_mask, digest_flags, retry_flags);
digest_flags = retry_flags;
cond_resched();
goto retry;
}
done:
return res;
}