mirrors/scoutfs
1
0
Fork 0
mirror of https://github.com/versity/scoutfs.git synced 2026-06-06 11:42:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

scoutfs-utils: update net format

Browse Source 
Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2018-07-23 15:33:27 -07:00
committed by Zach Brown
parent f368686b89
commit c3ad8282a3
1 changed files with 61 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

85
utils/src/format.h
View File

@@ -353,8 +353,6 @@ struct scoutfs_inet_addr {
__le16 port;
} __packed;
#define SCOUTFS_DEFAULT_PORT 12345
struct scoutfs_super_block {
struct scoutfs_block_header hdr;
__le64 id;
@@ -506,6 +504,10 @@ struct scoutfs_lock_name {
* messages over the wire.
*/
/*
* Greetings verify identity of communicating nodes. The sender
* sends their credentials and the receiver verifies them.
*/
struct scoutfs_net_greeting {
__le64 fsid;
__le64 format_hash;
@@ -517,15 +519,70 @@ struct scoutfs_net_greeting {
* type is strictly redundant in the reply because the id will find the
* send but we include it in both packets to make it easier to observe
* replies without having the id from their previous request.
*
* Error is only set to a translated errno on response messages and
* data_len will be 0.
*/
struct scoutfs_net_header {
__le64 id;
__le16 data_len;
__u8 type;
__u8 status;
__u8 msg;
__u8 cmd;
__u8 error;
__u8 data[0];
} __packed;
/*
* Greetings are the first messages sent down every newly established
* socket on the connection. Every other message gets a unique
* increasing id over the life time of the connection.
*/
#define SCOUTFS_NET_ID_GREETING 1
enum {
SCOUTFS_NET_MSG_REQUEST = 0,
SCOUTFS_NET_MSG_RESPONSE,
SCOUTFS_NET_MSG_ACK,
SCOUTFS_NET_MSG_UNKNOWN,
};
enum {
SCOUTFS_NET_CMD_GREETING = 0,
SCOUTFS_NET_CMD_ALLOC_INODES,
SCOUTFS_NET_CMD_ALLOC_EXTENT,
SCOUTFS_NET_CMD_FREE_EXTENTS,
SCOUTFS_NET_CMD_ALLOC_SEGNO,
SCOUTFS_NET_CMD_RECORD_SEGMENT,
SCOUTFS_NET_CMD_ADVANCE_SEQ,
SCOUTFS_NET_CMD_GET_LAST_SEQ,
SCOUTFS_NET_CMD_GET_MANIFEST_ROOT,
SCOUTFS_NET_CMD_STATFS,
SCOUTFS_NET_CMD_UNKNOWN,
};
/*
* Define a macro to evaluate another macro for each of the errnos we
* translate over the wire. This lets us keep our enum in sync with the
* mapping arrays to and from host errnos.
*/
#define EXPAND_EACH_NET_ERRNO \
EXPAND_NET_ERRNO(ENOENT) \
EXPAND_NET_ERRNO(ENOMEM) \
EXPAND_NET_ERRNO(EIO) \
EXPAND_NET_ERRNO(ENOSPC) \
EXPAND_NET_ERRNO(EINVAL)
#undef EXPAND_NET_ERRNO
#define EXPAND_NET_ERRNO(which) SCOUTFS_NET_ERR_##which,
enum {
SCOUTFS_NET_ERR_NONE = 0,
EXPAND_EACH_NET_ERRNO
SCOUTFS_NET_ERR_UNKNOWN,
};
/* arbitrarily chosen to be safely less than mss and allow 1k with header */
#define SCOUTFS_NET_MAX_DATA_LEN 1100
/*
* When there's no more free inodes this will be sent with ino = ~0 and
* nr = 0.
@@ -586,26 +643,6 @@ struct scoutfs_net_extent_list {
#define SCOUTFS_COMPACTION_MAX_UPDATE \
(2 * (SCOUTFS_COMPACTION_MAX_INPUT + SCOUTFS_COMPACTION_SLOP))
enum {
SCOUTFS_NET_ALLOC_INODES = 0,
SCOUTFS_NET_ALLOC_EXTENT,
SCOUTFS_NET_FREE_EXTENTS,
SCOUTFS_NET_ALLOC_SEGNO,
SCOUTFS_NET_RECORD_SEGMENT,
SCOUTFS_NET_ADVANCE_SEQ,
SCOUTFS_NET_GET_LAST_SEQ,
SCOUTFS_NET_GET_MANIFEST_ROOT,
SCOUTFS_NET_STATFS,
SCOUTFS_NET_UNKNOWN,
};
enum {
SCOUTFS_NET_STATUS_REQUEST = 0,
SCOUTFS_NET_STATUS_SUCCESS,
SCOUTFS_NET_STATUS_ERROR,
SCOUTFS_NET_STATUS_UNKNOWN,
};
/*
* Scoutfs file handle structure - this can be copied out to userspace
* via open by handle or put on the wire from NFS.