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Adjust the deprecated warnings for /dev/crypto to be less noisy.

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Warn when actual operations are performed instead of when sessions are
created.  The /dev/crypto engine in OpenSSL 1.0.x tries to create
sessions for all possible algorithms each time it is initialized
resulting in spurious warnings.

Reported by:	Mike Tancsa
MFC after:	3 days
Sponsored by:	Chelsio Communications
This commit is contained in:
John Baldwin 2019-08-27 21:29:37 +00:00
parent 4840711516
commit c311f5ebf6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=351557
1 changed files with 43 additions and 17 deletions
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60
sys/opencrypto/cryptodev.c
View file

@ -391,8 +391,6 @@ cryptof_ioctl(
struct crypt_op copc;
struct crypt_kop kopc;
#endif
static struct timeval arc4warn, blfwarn, castwarn, deswarn, md5warn;
static struct timeval skipwarn, tdeswarn;
switch (cmd) {
case CIOCGSESSION:
@ -413,28 +411,18 @@ cryptof_ioctl(
case 0:
break;
case CRYPTO_DES_CBC:
if (ratecheck(&deswarn, &warninterval))
gone_in(13, "DES cipher via /dev/crypto");
txform = &enc_xform_des;
break;
case CRYPTO_3DES_CBC:
if (ratecheck(&tdeswarn, &warninterval))
gone_in(13, "3DES cipher via /dev/crypto");
txform = &enc_xform_3des;
break;
case CRYPTO_BLF_CBC:
if (ratecheck(&blfwarn, &warninterval))
gone_in(13, "Blowfish cipher via /dev/crypto");
txform = &enc_xform_blf;
break;
case CRYPTO_CAST_CBC:
if (ratecheck(&castwarn, &warninterval))
gone_in(13, "CAST128 cipher via /dev/crypto");
txform = &enc_xform_cast5;
break;
case CRYPTO_SKIPJACK_CBC:
if (ratecheck(&skipwarn, &warninterval))
gone_in(13, "Skipjack cipher via /dev/crypto");
txform = &enc_xform_skipjack;
break;
case CRYPTO_AES_CBC:
@ -447,8 +435,6 @@ cryptof_ioctl(
txform = &enc_xform_null;
break;
case CRYPTO_ARC4:
if (ratecheck(&arc4warn, &warninterval))
gone_in(13, "ARC4 cipher via /dev/crypto");
txform = &enc_xform_arc4;
break;
case CRYPTO_CAMELLIA_CBC:
@ -477,9 +463,6 @@ cryptof_ioctl(
case 0:
break;
case CRYPTO_MD5_HMAC:
if (ratecheck(&md5warn, &warninterval))
gone_in(13,
"MD5-HMAC authenticator via /dev/crypto");
thash = &auth_hash_hmac_md5;
break;
case CRYPTO_POLY1305:
@ -815,6 +798,47 @@ cod_free(struct cryptop_data *cod)
free(cod, M_XDATA);
}
static void
cryptodev_warn(struct csession *cse)
{
static struct timeval arc4warn, blfwarn, castwarn, deswarn, md5warn;
static struct timeval skipwarn, tdeswarn;
switch (cse->cipher) {
case CRYPTO_DES_CBC:
if (ratecheck(&deswarn, &warninterval))
gone_in(13, "DES cipher via /dev/crypto");
break;
case CRYPTO_3DES_CBC:
if (ratecheck(&tdeswarn, &warninterval))
gone_in(13, "3DES cipher via /dev/crypto");
break;
case CRYPTO_BLF_CBC:
if (ratecheck(&blfwarn, &warninterval))
gone_in(13, "Blowfish cipher via /dev/crypto");
break;
case CRYPTO_CAST_CBC:
if (ratecheck(&castwarn, &warninterval))
gone_in(13, "CAST128 cipher via /dev/crypto");
break;
case CRYPTO_SKIPJACK_CBC:
if (ratecheck(&skipwarn, &warninterval))
gone_in(13, "Skipjack cipher via /dev/crypto");
break;
case CRYPTO_ARC4:
if (ratecheck(&arc4warn, &warninterval))
gone_in(13, "ARC4 cipher via /dev/crypto");
break;
}
switch (cse->mac) {
case CRYPTO_MD5_HMAC:
if (ratecheck(&md5warn, &warninterval))
gone_in(13, "MD5-HMAC authenticator via /dev/crypto");
break;
}
}
static int
cryptodev_op(
struct csession *cse,
@ -937,6 +961,7 @@ cryptodev_op(
error = EINVAL;
goto bail;
}
cryptodev_warn(cse);
again:
/*
@ -1106,6 +1131,7 @@ cryptodev_aead(
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
goto bail;
}
cryptodev_warn(cse);
again:
/*
* Let the dispatch run unlocked, then, interlock against the