From 4b61d2bd346de12bb62668ae0dc2f332643067a3 Mon Sep 17 00:00:00 2001
From: Wojciech Ziemba <wojciech.ziemba@intel.com>
Date: Thu, 7 Apr 2022 17:54:47 +0100
Subject: [PATCH] crypto: qat - add check for invalid PFVF protocol version 0
Git-commit: 4b61d2bd346de12bb62668ae0dc2f332643067a3
Patch-mainline: v5.19-rc1
References: jsc#PED-1073
PFVF protocol version 0 is not a valid version, but PF drivers
currently would report any such version from VFs as compatible.
This patch adds an extra check for the invalid PFVF protocol
version 0.
Signed-off-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Torsten Duwe <duwe@suse.de>
---
drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c b/drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c
index 588352de1ef0e..c059b98836aaa 100644
--- a/drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c
+++ b/drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c
@@ -242,7 +242,9 @@ static int adf_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr,
"VersionRequest received from VF%d (vers %d) to PF (vers %d)\n",
vf_nr, vf_compat_ver, ADF_PFVF_COMPAT_THIS_VERSION);
- if (vf_compat_ver <= ADF_PFVF_COMPAT_THIS_VERSION)
+ if (vf_compat_ver == 0)
+ compat = ADF_PF2VF_VF_INCOMPATIBLE;
+ else if (vf_compat_ver <= ADF_PFVF_COMPAT_THIS_VERSION)
compat = ADF_PF2VF_VF_COMPATIBLE;
else
compat = ADF_PF2VF_VF_COMPAT_UNKNOWN;
--
2.35.3