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cifs: Use help macro to get the mid header size 

It's better to use MID_HEADER_SIZE because the unfolded expression
too long. No actual functional changes, minor readability improvement.

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Zhang Xiaoxu 2022-08-23 20:52:01 +08:00 committed by Steve French
parent 9789de8bdc
commit b6b3624d01
2 changed files with 4 additions and 6 deletions
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1
fs/cifs/cifsglob.h
View File

@ -558,6 +558,7 @@ struct smb_version_values {
#define HEADER_SIZE(server) (server->vals->header_size)
#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
#define HEADER_PREAMBLE_SIZE(server) (server->vals->header_preamble_size)
#define MID_HEADER_SIZE(server) (HEADER_SIZE(server) - 1 - HEADER_PREAMBLE_SIZE(server))
/**
* CIFS superblock mount flags (mnt_cifs_flags) to consider when

9
fs/cifs/connect.c
View File

@ -1065,8 +1065,7 @@ 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(server) - 1,
pdu_length - HEADER_SIZE(server) + 1 +
HEADER_PREAMBLE_SIZE(server));
pdu_length - MID_HEADER_SIZE(server));
if (length < 0)
return length;
@ -1198,8 +1197,7 @@ next_pdu:
server->pdu_size = pdu_length;
/* make sure we have enough to get to the MID */
if (server->pdu_size < HEADER_SIZE(server) - 1 -
HEADER_PREAMBLE_SIZE(server)) {
if (server->pdu_size < MID_HEADER_SIZE(server)) {
cifs_server_dbg(VFS, "SMB response too short (%u bytes)\n",
server->pdu_size);
cifs_reconnect(server, true);
@ -1209,8 +1207,7 @@ next_pdu:
/* read down to the MID */
length = cifs_read_from_socket(server,
buf + HEADER_PREAMBLE_SIZE(server),
HEADER_SIZE(server) - 1 -
HEADER_PREAMBLE_SIZE(server));
MID_HEADER_SIZE(server));
if (length < 0)
continue;
server->total_read += length;