libceph, ceph: implement msgr2.1 protocol (crc and secure modes)

[linux-2.6-microblaze.git] / include / linux / ceph / msgr.h

diff --git a/include/linux/ceph/msgr.h b/include/linux/ceph/msgr.h
index 9a897a6..f5e02f6 100644 (file)
--- a/include/linux/ceph/msgr.h
+++ b/include/linux/ceph/msgr.h
@@ -14,9 +14,39 @@
  * constant.
  */
 #define CEPH_BANNER "ceph v027"
+#define CEPH_BANNER_LEN 9
 #define CEPH_BANNER_MAX_LEN 30
 
 
+/*
+ * messenger V2 connection banner prefix.
+ * The full banner string should have the form: "ceph v2\n<le16>"
+ * the 2 bytes are the length of the remaining banner.
+ */
+#define CEPH_BANNER_V2 "ceph v2\n"
+#define CEPH_BANNER_V2_LEN 8
+#define CEPH_BANNER_V2_PREFIX_LEN (CEPH_BANNER_V2_LEN + sizeof(__le16))
+
+/*
+ * messenger V2 features
+ */
+#define CEPH_MSGR2_INCARNATION_1 (0ull)
+
+#define DEFINE_MSGR2_FEATURE(bit, incarnation, name)               \
+       static const uint64_t CEPH_MSGR2_FEATURE_##name = (1ULL << bit); \
+       static const uint64_t CEPH_MSGR2_FEATUREMASK_##name =            \
+                       (1ULL << bit | CEPH_MSGR2_INCARNATION_##incarnation);
+
+#define HAVE_MSGR2_FEATURE(x, name) \
+       (((x) & (CEPH_MSGR2_FEATUREMASK_##name)) == (CEPH_MSGR2_FEATUREMASK_##name))
+
+DEFINE_MSGR2_FEATURE( 0, 1, REVISION_1)   // msgr2.1
+
+#define CEPH_MSGR2_SUPPORTED_FEATURES (CEPH_MSGR2_FEATURE_REVISION_1)
+
+#define CEPH_MSGR2_REQUIRED_FEATURES  (CEPH_MSGR2_FEATURE_REVISION_1)
+
+
 /*
  * Rollover-safe type and comparator for 32-bit sequence numbers.
  * Comparator returns -1, 0, or 1.
@@ -158,6 +188,24 @@ struct ceph_msg_header {
        __le32 crc;       /* header crc32c */
 } __attribute__ ((packed));
 
+struct ceph_msg_header2 {
+       __le64 seq;       /* message seq# for this session */
+       __le64 tid;       /* transaction id */
+       __le16 type;      /* message type */
+       __le16 priority;  /* priority.  higher value == higher priority */
+       __le16 version;   /* version of message encoding */
+
+       __le32 data_pre_padding_len;
+       __le16 data_off;  /* sender: include full offset;
+                            receiver: mask against ~PAGE_MASK */
+
+       __le64 ack_seq;
+       __u8 flags;
+       /* oldest code we think can decode this.  unknown if zero. */
+       __le16 compat_version;
+       __le16 reserved;
+} __attribute__ ((packed));
+
 #define CEPH_MSG_PRIO_LOW     64
 #define CEPH_MSG_PRIO_DEFAULT 127
 #define CEPH_MSG_PRIO_HIGH    196