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CIFS: Move creating lease buffer to ops struct 

to make adding new types of lease buffers easier.

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2013-09-04 13:07:41 +04:00 коммит произвёл Steve French
Родитель 53ef1016fd
Коммит a41a28bda9
3 изменённых файлов: 58 добавлений и 45 удалений
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9
fs/cifs/cifsglob.h
Просмотреть файл

@ -361,11 +361,11 @@ struct smb_version_operations {
/* push brlocks from the cache to the server */
int (*push_mand_locks)(struct cifsFileInfo *);
/* get lease key of the inode */
void (*get_lease_key)(struct inode *, struct cifs_fid *fid);
void (*get_lease_key)(struct inode *, struct cifs_fid *);
/* set lease key of the inode */
void (*set_lease_key)(struct inode *, struct cifs_fid *fid);
void (*set_lease_key)(struct inode *, struct cifs_fid *);
/* generate new lease key */
void (*new_lease_key)(struct cifs_fid *fid);
void (*new_lease_key)(struct cifs_fid *);
int (*generate_signingkey)(struct cifs_ses *);
int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *,
@ -374,6 +374,8 @@ struct smb_version_operations {
bool (*is_read_op)(__u32);
/* set oplock level for the inode */
void (*set_oplock_level)(struct cifsInodeInfo *, __u32);
/* create lease context buffer for CREATE request */
char * (*create_lease_buf)(u8 *, u8);
};
struct smb_version_values {
@ -393,6 +395,7 @@ struct smb_version_values {
unsigned int cap_large_files;
__u16 signing_enabled;
__u16 signing_required;
size_t create_lease_size;
};
#define HEADER_SIZE(server) (server->vals->header_size)

41
fs/cifs/smb2ops.c
Просмотреть файл

@ -714,6 +714,40 @@ smb21_is_read_op(__u32 oplock)
!(oplock & SMB2_LEASE_WRITE_CACHING_HE);
}
static char *
smb2_create_lease_buf(u8 *lease_key, u8 oplock)
{
struct create_lease *buf;
buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
if (!buf)
return NULL;
buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
buf->lcontext.LeaseState = SMB2_LEASE_WRITE_CACHING |
SMB2_LEASE_READ_CACHING;
else if (oplock == SMB2_OPLOCK_LEVEL_II)
buf->lcontext.LeaseState = SMB2_LEASE_READ_CACHING;
else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
buf->lcontext.LeaseState = SMB2_LEASE_HANDLE_CACHING |
SMB2_LEASE_READ_CACHING |
SMB2_LEASE_WRITE_CACHING;
buf->ccontext.DataOffset = cpu_to_le16(offsetof
(struct create_lease, lcontext));
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
buf->Name[3] = 's';
return (char *)buf;
}
struct smb_version_operations smb20_operations = {
.compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
@ -781,6 +815,7 @@ struct smb_version_operations smb20_operations = {
.calc_signature = smb2_calc_signature,
.is_read_op = smb2_is_read_op,
.set_oplock_level = smb2_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
};
struct smb_version_operations smb21_operations = {
@ -850,6 +885,7 @@ struct smb_version_operations smb21_operations = {
.calc_signature = smb2_calc_signature,
.is_read_op = smb21_is_read_op,
.set_oplock_level = smb21_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
};
struct smb_version_operations smb30_operations = {
@ -921,6 +957,7 @@ struct smb_version_operations smb30_operations = {
.calc_signature = smb3_calc_signature,
.is_read_op = smb21_is_read_op,
.set_oplock_level = smb21_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
};
struct smb_version_values smb20_values = {
@ -940,6 +977,7 @@ struct smb_version_values smb20_values = {
.cap_large_files = SMB2_LARGE_FILES,
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
.create_lease_size = sizeof(struct create_lease),
};
struct smb_version_values smb21_values = {
@ -959,6 +997,7 @@ struct smb_version_values smb21_values = {
.cap_large_files = SMB2_LARGE_FILES,
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
.create_lease_size = sizeof(struct create_lease),
};
struct smb_version_values smb30_values = {
@ -978,6 +1017,7 @@ struct smb_version_values smb30_values = {
.cap_large_files = SMB2_LARGE_FILES,
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
.create_lease_size = sizeof(struct create_lease),
};
struct smb_version_values smb302_values = {
@ -997,4 +1037,5 @@ struct smb_version_values smb302_values = {
.cap_large_files = SMB2_LARGE_FILES,
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
.create_lease_size = sizeof(struct create_lease),
};

53
fs/cifs/smb2pdu.c
Просмотреть файл

@ -855,39 +855,6 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon)
return rc;
}
static struct create_lease *
create_lease_buf(u8 *lease_key, u8 oplock)
{
struct create_lease *buf;
buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
if (!buf)
return NULL;
buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
buf->lcontext.LeaseState = SMB2_LEASE_WRITE_CACHING |
SMB2_LEASE_READ_CACHING;
else if (oplock == SMB2_OPLOCK_LEVEL_II)
buf->lcontext.LeaseState = SMB2_LEASE_READ_CACHING;
else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
buf->lcontext.LeaseState = SMB2_LEASE_HANDLE_CACHING |
SMB2_LEASE_READ_CACHING |
SMB2_LEASE_WRITE_CACHING;
buf->ccontext.DataOffset = cpu_to_le16(offsetof
(struct create_lease, lcontext));
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
buf->ccontext.NameOffset = cpu_to_le16(offsetof
(struct create_lease, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
buf->Name[0] = 'R';
buf->Name[1] = 'q';
buf->Name[2] = 'L';
buf->Name[3] = 's';
return buf;
}
static struct create_durable *
create_durable_buf(void)
@ -967,22 +934,24 @@ parse_lease_state(struct smb2_create_rsp *rsp)
}
static int
add_lease_context(struct kvec *iov, unsigned int *num_iovec, __u8 *oplock)
add_lease_context(struct TCP_Server_Info *server, struct kvec *iov,
unsigned int *num_iovec, __u8 *oplock)
{
struct smb2_create_req *req = iov[0].iov_base;
unsigned int num = *num_iovec;
iov[num].iov_base = create_lease_buf(oplock+1, *oplock);
iov[num].iov_base = server->ops->create_lease_buf(oplock+1, *oplock);
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_lease);
iov[num].iov_len = server->vals->create_lease_size;
req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) - 4 +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_lease));
inc_rfc1001_len(&req->hdr, sizeof(struct create_lease));
le32_add_cpu(&req->CreateContextsLength,
server->vals->create_lease_size);
inc_rfc1001_len(&req->hdr, server->vals->create_lease_size);
*num_iovec = num + 1;
return 0;
}
@ -1087,11 +1056,11 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (!server->oplocks)
*oplock = SMB2_OPLOCK_LEVEL_NONE;
if (!(tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) ||
if (!(server->capabilities & SMB2_GLOBAL_CAP_LEASING) ||
*oplock == SMB2_OPLOCK_LEVEL_NONE)
req->RequestedOplockLevel = *oplock;
else {
rc = add_lease_context(iov, &num_iovecs, oplock);
rc = add_lease_context(server, iov, &num_iovecs, oplock);
if (rc) {
cifs_small_buf_release(req);
kfree(copy_path);
@ -1101,11 +1070,11 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) {
/* need to set Next field of lease context if we request it */
if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) {
if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) {
struct create_context *ccontext =
(struct create_context *)iov[num_iovecs-1].iov_base;
ccontext->Next =
cpu_to_le32(sizeof(struct create_lease));
cpu_to_le32(server->vals->create_lease_size);
}
rc = add_durable_context(iov, &num_iovecs, oparms);
if (rc) {