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authorZhang Xiaoxu2022-08-23 20:52:00 +0800
committerSteve French2022-08-24 22:29:59 -0500
commit9789de8bdc92a9ec95c9bc7b43e94de91acc4460 (patch)
tree2ff02511b4a0cb0b131b3927dc5b785762b06735 /fs
parenta1d2eb51f0a33c28f5399a1610e66b3fbd24e884 (diff)
cifs: Use help macro to get the header preamble size
It's better to use HEADER_PREAMBLE_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>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/cifsencrypt.c2
-rw-r--r--fs/cifs/cifsglob.h1
-rw-r--r--fs/cifs/connect.c20
-rw-r--r--fs/cifs/transport.c21
4 files changed, 22 insertions, 22 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 8f7835ccbca1..61a9fed56548 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -32,7 +32,7 @@ int __cifs_calc_signature(struct smb_rqst *rqst,
int rc;
struct kvec *iov = rqst->rq_iov;
int n_vec = rqst->rq_nvec;
- int is_smb2 = server->vals->header_preamble_size == 0;
+ bool is_smb2 = HEADER_PREAMBLE_SIZE(server) == 0;
/* iov[0] is actual data and not the rfc1002 length for SMB2+ */
if (is_smb2) {
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f15d7b0c123d..b15b84d03fb6 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -557,6 +557,7 @@ 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)
/**
* CIFS superblock mount flags (mnt_cifs_flags) to consider when
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 3da5da9f16b0..ccf7f32e0c3e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -871,7 +871,7 @@ smb2_get_credits_from_hdr(char *buffer, struct TCP_Server_Info *server)
/*
* SMB1 does not use credits.
*/
- if (server->vals->header_preamble_size)
+ if (HEADER_PREAMBLE_SIZE(server))
return 0;
return le16_to_cpu(shdr->CreditRequest);
@@ -1050,7 +1050,7 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
/* make sure this will fit in a large buffer */
if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server) -
- server->vals->header_preamble_size) {
+ HEADER_PREAMBLE_SIZE(server)) {
cifs_server_dbg(VFS, "SMB response too long (%u bytes)\n", pdu_length);
cifs_reconnect(server, true);
return -ECONNABORTED;
@@ -1065,8 +1065,8 @@ 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(server) - 1,
- pdu_length - HEADER_SIZE(server) + 1
- + server->vals->header_preamble_size);
+ pdu_length - HEADER_SIZE(server) + 1 +
+ HEADER_PREAMBLE_SIZE(server));
if (length < 0)
return length;
@@ -1122,7 +1122,7 @@ smb2_add_credits_from_hdr(char *buffer, struct TCP_Server_Info *server)
/*
* SMB1 does not use credits.
*/
- if (server->vals->header_preamble_size)
+ if (HEADER_PREAMBLE_SIZE(server))
return;
if (shdr->CreditRequest) {
@@ -1180,7 +1180,7 @@ cifs_demultiplex_thread(void *p)
if (length < 0)
continue;
- if (server->vals->header_preamble_size == 0)
+ if (HEADER_PREAMBLE_SIZE(server) == 0)
server->total_read = 0;
else
server->total_read = length;
@@ -1199,7 +1199,7 @@ next_pdu:
/* make sure we have enough to get to the MID */
if (server->pdu_size < HEADER_SIZE(server) - 1 -
- server->vals->header_preamble_size) {
+ HEADER_PREAMBLE_SIZE(server)) {
cifs_server_dbg(VFS, "SMB response too short (%u bytes)\n",
server->pdu_size);
cifs_reconnect(server, true);
@@ -1208,9 +1208,9 @@ next_pdu:
/* read down to the MID */
length = cifs_read_from_socket(server,
- buf + server->vals->header_preamble_size,
- HEADER_SIZE(server) - 1
- - server->vals->header_preamble_size);
+ buf + HEADER_PREAMBLE_SIZE(server),
+ HEADER_SIZE(server) - 1 -
+ HEADER_PREAMBLE_SIZE(server));
if (length < 0)
continue;
server->total_read += length;
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index de7aeced7e16..bb1052dbac5b 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -261,8 +261,8 @@ smb_rqst_len(struct TCP_Server_Info *server, struct smb_rqst *rqst)
int nvec;
unsigned long buflen = 0;
- if (server->vals->header_preamble_size == 0 &&
- rqst->rq_nvec >= 2 && rqst->rq_iov[0].iov_len == 4) {
+ if (HEADER_PREAMBLE_SIZE(server) == 0 && rqst->rq_nvec >= 2 &&
+ rqst->rq_iov[0].iov_len == 4) {
iov = &rqst->rq_iov[1];
nvec = rqst->rq_nvec - 1;
} else {
@@ -346,7 +346,7 @@ __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
sigprocmask(SIG_BLOCK, &mask, &oldmask);
/* Generate a rfc1002 marker for SMB2+ */
- if (server->vals->header_preamble_size == 0) {
+ if (HEADER_PREAMBLE_SIZE(server) == 0) {
struct kvec hiov = {
.iov_base = &rfc1002_marker,
.iov_len = 4
@@ -1238,7 +1238,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
buf = (char *)midQ[i]->resp_buf;
resp_iov[i].iov_base = buf;
resp_iov[i].iov_len = midQ[i]->resp_buf_size +
- server->vals->header_preamble_size;
+ HEADER_PREAMBLE_SIZE(server);
if (midQ[i]->large_buf)
resp_buf_type[i] = CIFS_LARGE_BUFFER;
@@ -1643,7 +1643,7 @@ int
cifs_discard_remaining_data(struct TCP_Server_Info *server)
{
unsigned int rfclen = server->pdu_size;
- int remaining = rfclen + server->vals->header_preamble_size -
+ int remaining = rfclen + HEADER_PREAMBLE_SIZE(server) -
server->total_read;
while (remaining > 0) {
@@ -1689,8 +1689,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
unsigned int data_offset, data_len;
struct cifs_readdata *rdata = mid->callback_data;
char *buf = server->smallbuf;
- unsigned int buflen = server->pdu_size +
- server->vals->header_preamble_size;
+ unsigned int buflen = server->pdu_size + HEADER_PREAMBLE_SIZE(server);
bool use_rdma_mr = false;
cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n",
@@ -1724,10 +1723,10 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
/* set up first two iov for signature check and to get credits */
rdata->iov[0].iov_base = buf;
- rdata->iov[0].iov_len = server->vals->header_preamble_size;
- rdata->iov[1].iov_base = buf + server->vals->header_preamble_size;
+ rdata->iov[0].iov_len = HEADER_PREAMBLE_SIZE(server);
+ rdata->iov[1].iov_base = buf + HEADER_PREAMBLE_SIZE(server);
rdata->iov[1].iov_len =
- server->total_read - server->vals->header_preamble_size;
+ server->total_read - HEADER_PREAMBLE_SIZE(server);
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
rdata->iov[0].iov_base, rdata->iov[0].iov_len);
cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
@@ -1752,7 +1751,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
}
data_offset = server->ops->read_data_offset(buf) +
- server->vals->header_preamble_size;
+ HEADER_PREAMBLE_SIZE(server);
if (data_offset < server->total_read) {
/*
* win2k8 sometimes sends an offset of 0 when the read