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Commit a41a28bd authored by Pavel Shilovsky's avatar Pavel Shilovsky Committed by Steve French
Browse files

CIFS: Move creating lease buffer to ops struct 



to make adding new types of lease buffers easier.

Signed-off-by: default avatarPavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 53ef1016

fs/cifs/cifsglob.h

+6 −3
Original line number Diff line number Diff line
@@ -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)

fs/cifs/smb2ops.c

+41 −0
Original line number Diff line number Diff line
@@ -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),

};

fs/cifs/smb2pdu.c

+11 −42
Original line number Diff line number Diff line
@@ -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) {