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authorHani Benhabiles <kroosec@gmail.com>2014-06-07 01:32:31 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2014-06-30 12:50:17 +0200
commitf5076b5a759cb9b25ab377bbad453801db78a43e (patch)
tree2553aca261160196e952e4b629bf844e80898710 /include/block
parent27e5eae4577316f7e86a56eb7363d4e78f79e3e5 (diff)
downloadqemu-f5076b5a759cb9b25ab377bbad453801db78a43e.zip
nbd: Handle fixed new-style clients.
When this flag is set, the server tells the client that it can send another option if the server received a request with an option that it doesn't understand instead of directly closing the connection. Also add link to the most up-to-date documentation. Signed-off-by: Hani Benhabiles <kroosec@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/block')
-rw-r--r--include/block/nbd.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/block/nbd.h b/include/block/nbd.h
index 79502a090b..561b70cc5e 100644
--- a/include/block/nbd.h
+++ b/include/block/nbd.h
@@ -45,6 +45,15 @@ struct nbd_reply {
#define NBD_FLAG_ROTATIONAL (1 << 4) /* Use elevator algorithm - rotational media */
#define NBD_FLAG_SEND_TRIM (1 << 5) /* Send TRIM (discard) */
+/* New-style global flags. */
+#define NBD_FLAG_FIXED_NEWSTYLE (1 << 0) /* Fixed newstyle protocol. */
+
+/* New-style client flags. */
+#define NBD_FLAG_C_FIXED_NEWSTYLE (1 << 0) /* Fixed newstyle protocol. */
+
+/* Reply types. */
+#define NBD_REP_ERR_UNSUP ((1 << 31) | 1) /* Unknown option. */
+
#define NBD_CMD_MASK_COMMAND 0x0000ffff
#define NBD_CMD_FLAG_FUA (1 << 16)