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cifs: remove struct smb2_hdr

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struct smb2_hdr is now just a wrapper for smb2_sync_hdr.
We can thus get rid of smb2_hdr completely and access the sync header directly.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Ronnie Sahlberg 2018-06-01 10:53:06 +10:00 committed by Steve French
parent d81243c697
commit 49f466bdbd
7 changed files with 41 additions and 55 deletions
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2
fs/cifs/misc.c
View File

@ -148,7 +148,7 @@ cifs_buf_get(void)
* SMB2 header is bigger than CIFS one - no problems to clean some
* more bytes for CIFS.
*/
size_t buf_size = sizeof(struct smb2_hdr);
size_t buf_size = sizeof(struct smb2_sync_hdr);
/*
* We could use negotiated size instead of max_msgsize -

5
fs/cifs/smb2glob.h
View File

@ -61,9 +61,4 @@
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
static inline struct smb2_sync_hdr *get_sync_hdr(void *buf)
{
return &(((struct smb2_hdr *)buf)->sync_hdr);
}
#endif /* _SMB2_GLOB_H */

2
fs/cifs/smb2maperror.c
View File

@ -2451,7 +2451,7 @@ smb2_print_status(__le32 status)
int
map_smb2_to_linux_error(char *buf, bool log_err)
{
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
unsigned int i;
int rc = -EIO;
__le32 smb2err = shdr->Status;

2
fs/cifs/smb2misc.c
View File

@ -716,7 +716,7 @@ smb2_cancelled_close_fid(struct work_struct *work)
int
smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server)
{
struct smb2_sync_hdr *sync_hdr = get_sync_hdr(buffer);
struct smb2_sync_hdr *sync_hdr = (struct smb2_sync_hdr *)buffer;
struct smb2_create_rsp *rsp = (struct smb2_create_rsp *)buffer;
struct cifs_tcon *tcon;
struct close_cancelled_open *cancelled;

12
fs/cifs/smb2ops.c
View File

@ -123,7 +123,7 @@ smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
static unsigned int
smb2_get_credits(struct mid_q_entry *mid)
{
struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
return le16_to_cpu(shdr->CreditRequest);
}
@ -190,7 +190,7 @@ static struct mid_q_entry *
smb2_find_mid(struct TCP_Server_Info *server, char *buf)
{
struct mid_q_entry *mid;
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
__u64 wire_mid = le64_to_cpu(shdr->MessageId);
if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
@ -215,7 +215,7 @@ static void
smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
{
#ifdef CONFIG_CIFS_DEBUG2
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
@ -1303,7 +1303,7 @@ smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
static bool
smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
{
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
if (shdr->Status != STATUS_PENDING)
return false;
@ -1321,7 +1321,7 @@ smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
static bool
smb2_is_session_expired(char *buf)
{
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
shdr->Status != STATUS_USER_SESSION_DELETED)
@ -2534,7 +2534,7 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
unsigned int cur_page_idx;
unsigned int pad_len;
struct cifs_readdata *rdata = mid->callback_data;
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
struct bio_vec *bvec = NULL;
struct iov_iter iter;
struct kvec iov;

28
fs/cifs/smb2pdu.c
View File

@ -767,7 +767,7 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES;
security_blob = smb2_get_data_area_len(&blob_offset, &blob_length,
&rsp->hdr.sync_hdr);
(struct smb2_sync_hdr *)rsp);
/*
* See MS-SMB2 section 2.2.4: if no blob, client picks default which
* for us will be
@ -1131,7 +1131,7 @@ SMB2_auth_kerberos(struct SMB2_sess_data *sess_data)
goto out_put_spnego_key;
rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
ses->Suid = rsp->hdr.sync_hdr.SessionId;
ses->Suid = rsp->sync_hdr.SessionId;
ses->session_flags = le16_to_cpu(rsp->SessionFlags);
@ -1207,7 +1207,7 @@ SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data)
/* If true, rc here is expected and not an error */
if (sess_data->buf0_type != CIFS_NO_BUFFER &&
rsp->hdr.sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED)
rsp->sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED)
rc = 0;
if (rc)
@ -1228,7 +1228,7 @@ SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data)
cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n");
ses->Suid = rsp->hdr.sync_hdr.SessionId;
ses->Suid = rsp->sync_hdr.SessionId;
ses->session_flags = le16_to_cpu(rsp->SessionFlags);
out:
@ -1286,7 +1286,7 @@ SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data)
rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base;
ses->Suid = rsp->hdr.sync_hdr.SessionId;
ses->Suid = rsp->sync_hdr.SessionId;
ses->session_flags = le16_to_cpu(rsp->SessionFlags);
rc = SMB2_sess_establish_session(sess_data);
@ -1535,7 +1535,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess);
tcon->tidStatus = CifsGood;
tcon->need_reconnect = false;
tcon->tid = rsp->hdr.sync_hdr.TreeId;
tcon->tid = rsp->sync_hdr.TreeId;
strlcpy(tcon->treeName, tree, sizeof(tcon->treeName));
if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) &&
@ -1555,7 +1555,7 @@ tcon_exit:
return rc;
tcon_error_exit:
if (rsp && rsp->hdr.sync_hdr.Status == STATUS_BAD_NETWORK_NAME) {
if (rsp && rsp->sync_hdr.Status == STATUS_BAD_NETWORK_NAME) {
cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree);
}
goto tcon_exit;
@ -2526,7 +2526,7 @@ smb2_echo_callback(struct mid_q_entry *mid)
unsigned int credits_received = 1;
if (mid->mid_state == MID_RESPONSE_RECEIVED)
credits_received = le16_to_cpu(rsp->hdr.sync_hdr.CreditRequest);
credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest);
DeleteMidQEntry(mid);
add_credits(server, credits_received, CIFS_ECHO_OP);
@ -3006,7 +3006,7 @@ smb2_writev_callback(struct mid_q_entry *mid)
switch (mid->mid_state) {
case MID_RESPONSE_RECEIVED:
credits_received = le16_to_cpu(rsp->hdr.sync_hdr.CreditRequest);
credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest);
wdata->result = smb2_check_receive(mid, tcon->ses->server, 0);
if (wdata->result != 0)
break;
@ -3398,7 +3398,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
if (rc) {
if (rc == -ENODATA &&
rsp->hdr.sync_hdr.Status == STATUS_NO_MORE_FILES) {
rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
srch_inf->endOfSearch = true;
rc = 0;
}
@ -3781,7 +3781,7 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
info = (struct smb2_fs_full_size_info *)(server->vals->header_preamble_size +
le16_to_cpu(rsp->OutputBufferOffset) + (char *)&rsp->hdr);
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
rc = validate_iov(server,
le16_to_cpu(rsp->OutputBufferOffset),
le32_to_cpu(rsp->OutputBufferLength), &rsp_iov,
@ -3846,14 +3846,14 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
if (level == FS_ATTRIBUTE_INFORMATION)
memcpy(&tcon->fsAttrInfo, server->vals->header_preamble_size + offset
+ (char *)&rsp->hdr, min_t(unsigned int,
+ (char *)rsp, min_t(unsigned int,
rsp_len, max_len));
else if (level == FS_DEVICE_INFORMATION)
memcpy(&tcon->fsDevInfo, server->vals->header_preamble_size + offset
+ (char *)&rsp->hdr, sizeof(FILE_SYSTEM_DEVICE_INFO));
+ (char *)rsp, sizeof(FILE_SYSTEM_DEVICE_INFO));
else if (level == FS_SECTOR_SIZE_INFORMATION) {
struct smb3_fs_ss_info *ss_info = (struct smb3_fs_ss_info *)
(server->vals->header_preamble_size + offset + (char *)&rsp->hdr);
(server->vals->header_preamble_size + offset + (char *)rsp);
tcon->ss_flags = le32_to_cpu(ss_info->Flags);
tcon->perf_sector_size =
le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf);

45
fs/cifs/smb2pdu.h
View File

@ -122,15 +122,6 @@ struct smb2_sync_pdu {
__le16 StructureSize2; /* size of wct area (varies, request specific) */
} __packed;
struct smb2_hdr {
struct smb2_sync_hdr sync_hdr;
} __packed;
struct smb2_pdu {
struct smb2_hdr hdr;
__le16 StructureSize2; /* size of wct area (varies, request specific) */
} __packed;
#define SMB3_AES128CMM_NONCE 11
#define SMB3_AES128GCM_NONCE 12
@ -165,7 +156,7 @@ struct smb2_transform_hdr {
#define SMB2_ERROR_STRUCTURE_SIZE2 cpu_to_le16(9)
struct smb2_err_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize;
__le16 Reserved; /* MBZ */
__le32 ByteCount; /* even if zero, at least one byte follows */
@ -303,7 +294,7 @@ struct smb2_posix_neg_context {
} __packed;
struct smb2_negotiate_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 65 */
__le16 SecurityMode;
__le16 DialectRevision;
@ -343,7 +334,7 @@ struct smb2_sess_setup_req {
#define SMB2_SESSION_FLAG_IS_NULL 0x0002
#define SMB2_SESSION_FLAG_ENCRYPT_DATA 0x0004
struct smb2_sess_setup_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 9 */
__le16 SessionFlags;
__le16 SecurityBufferOffset;
@ -358,7 +349,7 @@ struct smb2_logoff_req {
} __packed;
struct smb2_logoff_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 4 */
__le16 Reserved;
} __packed;
@ -454,7 +445,7 @@ struct smb2_tree_connect_req_extension {
} __packed;
struct smb2_tree_connect_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 16 */
__u8 ShareType; /* see below */
__u8 Reserved;
@ -505,7 +496,7 @@ struct smb2_tree_disconnect_req {
} __packed;
struct smb2_tree_disconnect_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 4 */
__le16 Reserved;
} __packed;
@ -642,7 +633,7 @@ struct smb2_create_req {
} __packed;
struct smb2_create_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 89 */
__u8 OplockLevel;
__u8 Reserved;
@ -905,7 +896,7 @@ struct smb2_ioctl_req {
} __packed;
struct smb2_ioctl_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 57 */
__u16 Reserved;
__le32 CtlCode;
@ -932,7 +923,7 @@ struct smb2_close_req {
} __packed;
struct smb2_close_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* 60 */
__le16 Flags;
__le32 Reserved;
@ -955,7 +946,7 @@ struct smb2_flush_req {
} __packed;
struct smb2_flush_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize;
__le16 Reserved;
} __packed;
@ -987,7 +978,7 @@ struct smb2_read_plain_req {
} __packed;
struct smb2_read_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 17 */
__u8 DataOffset;
__u8 Reserved;
@ -1018,7 +1009,7 @@ struct smb2_write_req {
} __packed;
struct smb2_write_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 17 */
__u8 DataOffset;
__u8 Reserved;
@ -1052,7 +1043,7 @@ struct smb2_lock_req {
} __packed;
struct smb2_lock_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 4 */
__le16 Reserved;
} __packed;
@ -1064,7 +1055,7 @@ struct smb2_echo_req {
} __packed;
struct smb2_echo_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 4 */
__u16 Reserved;
} __packed;
@ -1090,7 +1081,7 @@ struct smb2_query_directory_req {
} __packed;
struct smb2_query_directory_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
@ -1139,7 +1130,7 @@ struct smb2_query_info_req {
} __packed;
struct smb2_query_info_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
@ -1161,7 +1152,7 @@ struct smb2_set_info_req {
} __packed;
struct smb2_set_info_rsp {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 2 */
} __packed;
@ -1178,7 +1169,7 @@ struct smb2_oplock_break {
#define SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED cpu_to_le32(0x01)
struct smb2_lease_break {
struct smb2_hdr hdr;
struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 44 */
__le16 Reserved;
__le32 Flags;