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scoutfs-utils: update format network requests

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We updated the format header when relaxing the restrictions on duplicate
request message processing.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2018-08-23 14:02:36 -07:00
committed by Zach Brown
parent 078d2f6073
commit bf014a4c57
1 changed files with 6 additions and 20 deletions
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26
utils/src/format.h
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@@ -520,36 +520,22 @@ struct scoutfs_net_greeting {
/*
* This header precedes and describes all network messages sent over
* sockets. The id is set by the request and sent in the reply. The
* 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.
* sockets. The id is set by the request and sent in the response.
*
* Error is only set to a translated errno on response messages and
* data_len will be 0.
* Error is only set to a translated errno and will only be found in
* response messages.
*/
struct scoutfs_net_header {
__le64 id;
__le16 data_len;
__u8 msg;
__u8 cmd;
__u8 flags;
__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,
};
#define SCOUTFS_NET_FLAG_RESPONSE (1 << 0)
#define SCOUTFS_NET_FLAGS_UNKNOWN (U8_MAX << 1)
enum {
SCOUTFS_NET_CMD_GREETING = 0,