linux-kernel - [PATCH 16/19] lightnvm: define chunk states

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1519651038-16845-17-git-send-email-javier@cnexlabs.com>
Date:   Mon, 26 Feb 2018 14:17:15 +0100
From:   "Javier González" <jg@...htnvm.io>
To:     mb@...htnvm.io
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org,
        Javier González <javier@...xlabs.com>
Subject: [PATCH 16/19] lightnvm: define chunk states

Define chunk states as given in the 2.0 spec. Also, add an extra chunk
state that signals that the chunk is in use by the host. This allows for
the chunk metadata to be "owned" by a target when active, thus
completing the chunk state machine from the host perspective and
facilitating sanity checks. This state is transparent for the device.

Signed-off-by: Javier González <javier@...xlabs.com>
---
 include/linux/lightnvm.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 776ffdc2e137..74830d5dbd6e 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -232,6 +232,20 @@ struct nvm_addr_format {
 	u64	rsv_mask[2];
 };
 
+enum {
+	/* Chunk states */
+	NVM_CHK_ST_FREE =	1 << 0,
+	NVM_CHK_ST_CLOSED =	1 << 1,
+	NVM_CHK_ST_OPEN =	1 << 2,
+	NVM_CHK_ST_OFFLINE =	1 << 3,
+	NVM_CHK_ST_HOST_USE =	1 << 7,
+
+	/* Chunk types */
+	NVM_CHK_TP_W_SEQ =	1 << 0,
+	NVM_CHK_TP_W_RAN =	1 << 1,
+	NVM_CHK_TP_SZ_SPEC =	1 << 4,
+};
+
 /*
  * Note: The structure size is linked to nvme_nvm_chk_meta such that the same
  * buffer can be used when converting from little endian to cpu addressing.
-- 
2.7.4