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| author | Revanth Rajashekar <revanth.rajashekar@intel.com> | 2020-03-03 20:17:00 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-03-12 15:00:10 +0100 |
| commit | 88d6041d070028ef31c52845966216004ebba3bb (patch) | |
| tree | df5b67c092c94640b5ddd86fd5d27ab1628e28b6 /block/sed-opal.c | |
| parent | block: Document genhd capability flags (diff) | |
| download | linux-88d6041d070028ef31c52845966216004ebba3bb.tar.xz linux-88d6041d070028ef31c52845966216004ebba3bb.zip | |
block: sed-opal: Change the check condition for regular session validity
This patch changes the check condition for the validity/authentication
of the session.
1. The Host Session Number(HSN) in the response should match the HSN for
the session.
2. The TPER Session Number(TSN) can never be less than 4096 for a regular
session.
Reference:
Section 3.2.2.1 of https://trustedcomputinggroup.org/wp-content/uploads/TCG_Storage_Opal_SSC_Application_Note_1-00_1-00-Final.pdf
Section 3.3.7.1.1 of https://trustedcomputinggroup.org/wp-content/uploads/TCG_Storage_Architecture_Core_Spec_v2.01_r1.00.pdf
Co-developed-by: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
Signed-off-by: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/sed-opal.c')
| -rw-r--r-- | block/sed-opal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/sed-opal.c b/block/sed-opal.c index 880cc57a5f6b..daafadbb88ca 100644 --- a/block/sed-opal.c +++ b/block/sed-opal.c @@ -1056,7 +1056,7 @@ static int start_opal_session_cont(struct opal_dev *dev) hsn = response_get_u64(&dev->parsed, 4); tsn = response_get_u64(&dev->parsed, 5); - if (hsn == 0 && tsn == 0) { + if (hsn != GENERIC_HOST_SESSION_NUM || tsn < FIRST_TPER_SESSION_NUM) { pr_debug("Couldn't authenticate session\n"); return -EPERM; } |