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CIFS: Move header_size/max_header_size to ops structure

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Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky 2012-05-17 12:45:31 +04:00 committed by Pavel Shilovsky
parent 082d0642c6
commit 1887f60103
4 changed files with 20 additions and 23 deletions
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17
fs/cifs/cifsglob.h
View File

@ -177,8 +177,13 @@ struct smb_version_values {
__u32 exclusive_lock_type;
__u32 shared_lock_type;
__u32 unlock_lock_type;
size_t header_size;
size_t max_header_size;
};
#define HEADER_SIZE(server) (server->vals->header_size)
#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
struct smb_vol {
char *username;
char *password;
@ -374,18 +379,6 @@ has_credits(struct TCP_Server_Info *server, int *credits)
return num > 0;
}
static inline size_t
header_size(void)
{
return sizeof(struct smb_hdr);
}
static inline size_t
max_header_size(void)
{
return MAX_CIFS_HDR_SIZE;
}
/*
* Macros to allow the TCP_Server_Info->net field and related code to drop out
* when CONFIG_NET_NS isn't set.

7
fs/cifs/cifssmb.c
View File

@ -1400,7 +1400,7 @@ cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
length = cifs_read_from_socket(server, server->bigbuf,
min_t(unsigned int, remaining,
CIFSMaxBufSize + max_header_size()));
CIFSMaxBufSize + MAX_HEADER_SIZE(server)));
if (length < 0)
return length;
server->total_read += length;
@ -1449,9 +1449,10 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
* can if there's not enough data. At this point, we've read down to
* the Mid.
*/
len = min_t(unsigned int, buflen, read_rsp_size()) - header_size() + 1;
len = min_t(unsigned int, buflen, read_rsp_size()) -
HEADER_SIZE(server) + 1;
rdata->iov[0].iov_base = buf + header_size() - 1;
rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1;
rdata->iov[0].iov_len = len;
length = cifs_readv_from_socket(server, rdata->iov, 1, len);

17
fs/cifs/connect.c
View File

@ -568,7 +568,7 @@ allocate_buffers(struct TCP_Server_Info *server)
}
} else if (server->large_buf) {
/* we are reusing a dirty large buf, clear its start */
memset(server->bigbuf, 0, header_size());
memset(server->bigbuf, 0, HEADER_SIZE(server));
}
if (!server->smallbuf) {
@ -582,7 +582,7 @@ allocate_buffers(struct TCP_Server_Info *server)
/* beginning of smb buffer is cleared in our buf_get */
} else {
/* if existing small buf clear beginning */
memset(server->smallbuf, 0, header_size());
memset(server->smallbuf, 0, HEADER_SIZE(server));
}
return true;
@ -953,7 +953,7 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
unsigned int pdu_length = get_rfc1002_length(buf);
/* make sure this will fit in a large buffer */
if (pdu_length > CIFSMaxBufSize + max_header_size() - 4) {
if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server) - 4) {
cERROR(1, "SMB response too long (%u bytes)",
pdu_length);
cifs_reconnect(server);
@ -969,8 +969,8 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
}
/* now read the rest */
length = cifs_read_from_socket(server, buf + header_size() - 1,
pdu_length - header_size() + 1 + 4);
length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
pdu_length - HEADER_SIZE(server) + 1 + 4);
if (length < 0)
return length;
server->total_read += length;
@ -1044,7 +1044,7 @@ cifs_demultiplex_thread(void *p)
continue;
/* make sure we have enough to get to the MID */
if (pdu_length < header_size() - 1 - 4) {
if (pdu_length < HEADER_SIZE(server) - 1 - 4) {
cERROR(1, "SMB response too short (%u bytes)",
pdu_length);
cifs_reconnect(server);
@ -1054,7 +1054,7 @@ cifs_demultiplex_thread(void *p)
/* read down to the MID */
length = cifs_read_from_socket(server, buf + 4,
header_size() - 1 - 4);
HEADER_SIZE(server) - 1 - 4);
if (length < 0)
continue;
server->total_read += length;
@ -1079,7 +1079,8 @@ cifs_demultiplex_thread(void *p)
} else if (!is_valid_oplock_break(buf, server)) {
cERROR(1, "No task to wake, unknown frame received! "
"NumMids %d", atomic_read(&midCount));
cifs_dump_mem("Received Data is: ", buf, header_size());
cifs_dump_mem("Received Data is: ", buf,
HEADER_SIZE(server));
#ifdef CONFIG_CIFS_DEBUG2
cifs_dump_detail(buf);
cifs_dump_mids(server);

2
fs/cifs/smb1ops.c
View File

@ -79,4 +79,6 @@ struct smb_version_values smb1_values = {
.exclusive_lock_type = 0,
.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
.unlock_lock_type = 0,
.header_size = sizeof(struct smb_hdr),
.max_header_size = MAX_CIFS_HDR_SIZE,
};