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| author |   Steve French <stfrench@microsoft.com> | 2019-07-06 14:41:38 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-07-07 22:37:44 -0500 |
| commit | ff2a09e9196e2f9d5edc60d1a68bc3d3649d035b (patch) | |
| tree | f87106734c684c680c8dc4d8dc3165fe4dba9383 /fs/cifs/smb2pdu.h | |
| parent | smb3: Send netname context during negotiate protocol (diff) | |
| download | linux-dev-ff2a09e9196e2f9d5edc60d1a68bc3d3649d035b.tar.xz linux-dev-ff2a09e9196e2f9d5edc60d1a68bc3d3649d035b.zip | |
SMB3: query inode number on open via create context
We can cut the number of roundtrips on open (may also
help some rename cases as well) by returning the inode
number in the SMB2 open request itself instead of
querying it afterwards via a query FILE_INTERNAL_INFO.
This should significantly improve the performance of
posix open.
Add SMB2_CREATE_QUERY_ON_DISK_ID create context request
on open calls so that when server supports this we
can save a roundtrip for QUERY_INFO on every open.
Follow on patch will add the response processing for
SMB2_CREATE_QUERY_ON_DISK_ID context and optimize
smb2_open_file to avoid the extra network roundtrip
on every posix open. This patch adds the context on
SMB2/SMB3 open requests.
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2pdu.h')
| -rw-r--r-- | fs/cifs/smb2pdu.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 053ec621e7b9..458bad01ca74 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -662,9 +662,10 @@ struct smb2_tree_disconnect_rsp { * [3] : durable context * [4] : posix context * [5] : time warp context - * [6] : compound padding + * [6] : query id context + * [7] : compound padding */ -#define SMB2_CREATE_IOV_SIZE 7 +#define SMB2_CREATE_IOV_SIZE 8 struct smb2_create_req { struct smb2_sync_hdr sync_hdr; @@ -688,10 +689,10 @@ struct smb2_create_req { /* * Maximum size of a SMB2_CREATE response is 64 (smb2 header) + - * 88 (fixed part of create response) + 520 (path) + 150 (contexts) + + * 88 (fixed part of create response) + 520 (path) + 208 (contexts) + * 2 bytes of padding. */ -#define MAX_SMB2_CREATE_RESPONSE_SIZE 824 +#define MAX_SMB2_CREATE_RESPONSE_SIZE 880 struct smb2_create_rsp { struct smb2_sync_hdr sync_hdr; @@ -818,7 +819,7 @@ struct durable_reconnect_context_v2 { struct on_disk_id { __le64 DiskFileId; __le64 VolumeId; - __u64 Reserved[4]; + __u32 Reserved[4]; } __packed; /* See MS-SMB2 2.2.14.2.12 */ @@ -841,6 +842,12 @@ struct crt_twarp_ctxt { } __packed; +/* See MS-SMB2 2.2.13.2.9 */ +struct crt_query_id_ctxt { + struct create_context ccontext; + __u8 Name[8]; +} __packed; + #define COPY_CHUNK_RES_KEY_SIZE 24 struct resume_key_req { char ResumeKey[COPY_CHUNK_RES_KEY_SIZE]; |