forked from Minki/linux
cifs: change cifs_call_async to use smb_rqst structs
For now, none of the callers populate rq_pages. That will be done for writes in a later patch. While we're at it, change the prototype of setup_async_request not to need a return pointer argument. Just return the pointer to the mid_q_entry or an ERR_PTR. Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Jeff Layton
Steve French
parent
fb308a6f22
commit
fec344e3f3
@ -201,11 +201,11 @@ struct smb_version_operations {
|
||||
struct mid_q_entry *);
|
||||
bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
|
||||
/* setup request: allocate mid, sign message */
|
||||
int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int,
|
||||
struct mid_q_entry **);
|
||||
struct mid_q_entry *(*setup_request)(struct cifs_ses *,
|
||||
struct smb_rqst *);
|
||||
/* setup async request: allocate mid, sign message */
|
||||
int (*setup_async_request)(struct TCP_Server_Info *, struct kvec *,
|
||||
unsigned int, struct mid_q_entry **);
|
||||
struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
|
||||
struct smb_rqst *);
|
||||
/* check response: verify signature, map error */
|
||||
int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
|
||||
bool);
|
||||
|
||||
@ -70,20 +70,20 @@ extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
|
||||
extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
|
||||
extern void cifs_delete_mid(struct mid_q_entry *mid);
|
||||
extern void cifs_wake_up_task(struct mid_q_entry *mid);
|
||||
extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
unsigned int nvec, mid_receive_t *receive,
|
||||
mid_callback_t *callback, void *cbdata,
|
||||
const int flags);
|
||||
extern int cifs_call_async(struct TCP_Server_Info *server,
|
||||
struct smb_rqst *rqst,
|
||||
mid_receive_t *receive, mid_callback_t *callback,
|
||||
void *cbdata, const int flags);
|
||||
extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
|
||||
struct smb_hdr * /* input */ ,
|
||||
struct smb_hdr * /* out */ ,
|
||||
int * /* bytes returned */ , const int);
|
||||
extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
|
||||
char *in_buf, int flags);
|
||||
extern int cifs_setup_request(struct cifs_ses *, struct kvec *, unsigned int,
|
||||
struct mid_q_entry **);
|
||||
extern int cifs_setup_async_request(struct TCP_Server_Info *, struct kvec *,
|
||||
unsigned int, struct mid_q_entry **);
|
||||
extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
|
||||
struct smb_rqst *);
|
||||
extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
|
||||
struct smb_rqst *);
|
||||
extern int cifs_check_receive(struct mid_q_entry *mid,
|
||||
struct TCP_Server_Info *server, bool log_error);
|
||||
extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *,
|
||||
|
||||
@ -725,6 +725,8 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
|
||||
ECHO_REQ *smb;
|
||||
int rc = 0;
|
||||
struct kvec iov;
|
||||
struct smb_rqst rqst = { .rq_iov = &iov,
|
||||
.rq_nvec = 1 };
|
||||
|
||||
cFYI(1, "In echo request");
|
||||
|
||||
@ -742,7 +744,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
|
||||
iov.iov_base = smb;
|
||||
iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
|
||||
|
||||
rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback,
|
||||
rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback,
|
||||
server, CIFS_ASYNC_OP | CIFS_ECHO_OP);
|
||||
if (rc)
|
||||
cFYI(1, "Echo request failed: %d", rc);
|
||||
@ -1585,6 +1587,8 @@ cifs_async_readv(struct cifs_readdata *rdata)
|
||||
READ_REQ *smb = NULL;
|
||||
int wct;
|
||||
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
|
||||
struct smb_rqst rqst = { .rq_iov = rdata->iov,
|
||||
.rq_nvec = 1 };
|
||||
|
||||
cFYI(1, "%s: offset=%llu bytes=%u", __func__,
|
||||
rdata->offset, rdata->bytes);
|
||||
@ -1628,9 +1632,8 @@ cifs_async_readv(struct cifs_readdata *rdata)
|
||||
rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
|
||||
|
||||
kref_get(&rdata->refcount);
|
||||
rc = cifs_call_async(tcon->ses->server, rdata->iov, 1,
|
||||
cifs_readv_receive, cifs_readv_callback,
|
||||
rdata, 0);
|
||||
rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive,
|
||||
cifs_readv_callback, rdata, 0);
|
||||
|
||||
if (rc == 0)
|
||||
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads);
|
||||
@ -2035,6 +2038,7 @@ cifs_async_writev(struct cifs_writedata *wdata)
|
||||
int wct;
|
||||
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
|
||||
struct kvec *iov = NULL;
|
||||
struct smb_rqst rqst = { };
|
||||
|
||||
if (tcon->ses->capabilities & CAP_LARGE_FILES) {
|
||||
wct = 14;
|
||||
@ -2051,11 +2055,13 @@ cifs_async_writev(struct cifs_writedata *wdata)
|
||||
goto async_writev_out;
|
||||
|
||||
/* 1 iov per page + 1 for header */
|
||||
iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS);
|
||||
rqst.rq_nvec = wdata->nr_pages + 1;
|
||||
iov = kzalloc((rqst.rq_nvec) * sizeof(*iov), GFP_NOFS);
|
||||
if (iov == NULL) {
|
||||
rc = -ENOMEM;
|
||||
goto async_writev_out;
|
||||
}
|
||||
rqst.rq_iov = iov;
|
||||
|
||||
smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid);
|
||||
smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16));
|
||||
@ -2104,8 +2110,8 @@ cifs_async_writev(struct cifs_writedata *wdata)
|
||||
}
|
||||
|
||||
kref_get(&wdata->refcount);
|
||||
rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1,
|
||||
NULL, cifs_writev_callback, wdata, 0);
|
||||
rc = cifs_call_async(tcon->ses->server, &rqst, NULL,
|
||||
cifs_writev_callback, wdata, 0);
|
||||
|
||||
if (rc == 0)
|
||||
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
|
||||
|
||||
@ -1171,6 +1171,8 @@ SMB2_echo(struct TCP_Server_Info *server)
|
||||
struct smb2_echo_req *req;
|
||||
int rc = 0;
|
||||
struct kvec iov;
|
||||
struct smb_rqst rqst = { .rq_iov = &iov,
|
||||
.rq_nvec = 1 };
|
||||
|
||||
cFYI(1, "In echo request");
|
||||
|
||||
@ -1184,7 +1186,7 @@ SMB2_echo(struct TCP_Server_Info *server)
|
||||
/* 4 for rfc1002 length field */
|
||||
iov.iov_len = get_rfc1002_length(req) + 4;
|
||||
|
||||
rc = cifs_call_async(server, &iov, 1, NULL, smb2_echo_callback, server,
|
||||
rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, server,
|
||||
CIFS_ECHO_OP);
|
||||
if (rc)
|
||||
cFYI(1, "Echo request failed: %d", rc);
|
||||
@ -1344,6 +1346,8 @@ smb2_async_readv(struct cifs_readdata *rdata)
|
||||
int rc;
|
||||
struct smb2_hdr *buf;
|
||||
struct cifs_io_parms io_parms;
|
||||
struct smb_rqst rqst = { .rq_iov = rdata->iov,
|
||||
.rq_nvec = 1 };
|
||||
|
||||
cFYI(1, "%s: offset=%llu bytes=%u", __func__,
|
||||
rdata->offset, rdata->bytes);
|
||||
@ -1363,7 +1367,7 @@ smb2_async_readv(struct cifs_readdata *rdata)
|
||||
rdata->iov[0].iov_len = get_rfc1002_length(rdata->iov[0].iov_base) + 4;
|
||||
|
||||
kref_get(&rdata->refcount);
|
||||
rc = cifs_call_async(io_parms.tcon->ses->server, rdata->iov, 1,
|
||||
rc = cifs_call_async(io_parms.tcon->ses->server, &rqst,
|
||||
cifs_readv_receive, smb2_readv_callback,
|
||||
rdata, 0);
|
||||
if (rc)
|
||||
@ -1484,6 +1488,7 @@ smb2_async_writev(struct cifs_writedata *wdata)
|
||||
struct smb2_write_req *req = NULL;
|
||||
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
|
||||
struct kvec *iov = NULL;
|
||||
struct smb_rqst rqst;
|
||||
|
||||
rc = small_smb2_init(SMB2_WRITE, tcon, (void **) &req);
|
||||
if (rc)
|
||||
@ -1495,6 +1500,8 @@ smb2_async_writev(struct cifs_writedata *wdata)
|
||||
rc = -ENOMEM;
|
||||
goto async_writev_out;
|
||||
}
|
||||
rqst.rq_iov = iov;
|
||||
rqst.rq_nvec = wdata->nr_pages + 1;
|
||||
|
||||
req->hdr.ProcessId = cpu_to_le32(wdata->cfile->pid);
|
||||
|
||||
@ -1530,8 +1537,8 @@ smb2_async_writev(struct cifs_writedata *wdata)
|
||||
inc_rfc1001_len(&req->hdr, wdata->bytes - 1 /* Buffer */);
|
||||
|
||||
kref_get(&wdata->refcount);
|
||||
rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1,
|
||||
NULL, smb2_writev_callback, wdata, 0);
|
||||
rc = cifs_call_async(tcon->ses->server, &rqst, NULL,
|
||||
smb2_writev_callback, wdata, 0);
|
||||
|
||||
if (rc)
|
||||
kref_put(&wdata->refcount, cifs_writedata_release);
|
||||
|
||||
@ -43,11 +43,10 @@ extern __le16 *cifs_convert_path_to_utf16(const char *from,
|
||||
extern int smb2_verify_signature(struct smb_rqst *, struct TCP_Server_Info *);
|
||||
extern int smb2_check_receive(struct mid_q_entry *mid,
|
||||
struct TCP_Server_Info *server, bool log_error);
|
||||
extern int smb2_setup_request(struct cifs_ses *ses, struct kvec *iov,
|
||||
unsigned int nvec, struct mid_q_entry **ret_mid);
|
||||
extern int smb2_setup_async_request(struct TCP_Server_Info *server,
|
||||
struct kvec *iov, unsigned int nvec,
|
||||
struct mid_q_entry **ret_mid);
|
||||
extern struct mid_q_entry *smb2_setup_request(struct cifs_ses *ses,
|
||||
struct smb_rqst *rqst);
|
||||
extern struct mid_q_entry *smb2_setup_async_request(
|
||||
struct TCP_Server_Info *server, struct smb_rqst *rqst);
|
||||
extern void smb2_echo_request(struct work_struct *work);
|
||||
extern bool smb2_is_valid_oplock_break(char *buffer,
|
||||
struct TCP_Server_Info *srv);
|
||||
|
||||
@ -281,50 +281,44 @@ smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
|
||||
return map_smb2_to_linux_error(mid->resp_buf, log_error);
|
||||
}
|
||||
|
||||
int
|
||||
smb2_setup_request(struct cifs_ses *ses, struct kvec *iov,
|
||||
unsigned int nvec, struct mid_q_entry **ret_mid)
|
||||
struct mid_q_entry *
|
||||
smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc;
|
||||
struct smb2_hdr *hdr = (struct smb2_hdr *)iov[0].iov_base;
|
||||
struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = nvec };
|
||||
|
||||
smb2_seq_num_into_buf(ses->server, hdr);
|
||||
|
||||
rc = smb2_get_mid_entry(ses, hdr, &mid);
|
||||
if (rc)
|
||||
return rc;
|
||||
rc = smb2_sign_rqst(&rqst, ses->server);
|
||||
if (rc)
|
||||
return ERR_PTR(rc);
|
||||
rc = smb2_sign_rqst(rqst, ses->server);
|
||||
if (rc) {
|
||||
cifs_delete_mid(mid);
|
||||
*ret_mid = mid;
|
||||
return rc;
|
||||
return ERR_PTR(rc);
|
||||
}
|
||||
return mid;
|
||||
}
|
||||
|
||||
int
|
||||
smb2_setup_async_request(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
unsigned int nvec, struct mid_q_entry **ret_mid)
|
||||
struct mid_q_entry *
|
||||
smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc = 0;
|
||||
struct smb2_hdr *hdr = (struct smb2_hdr *)iov[0].iov_base;
|
||||
int rc;
|
||||
struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = nvec };
|
||||
|
||||
smb2_seq_num_into_buf(server, hdr);
|
||||
|
||||
mid = smb2_mid_entry_alloc(hdr, server);
|
||||
if (mid == NULL)
|
||||
return -ENOMEM;
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
rc = smb2_sign_rqst(&rqst, server);
|
||||
rc = smb2_sign_rqst(rqst, server);
|
||||
if (rc) {
|
||||
DeleteMidQEntry(mid);
|
||||
return rc;
|
||||
return ERR_PTR(rc);
|
||||
}
|
||||
|
||||
*ret_mid = mid;
|
||||
return rc;
|
||||
return mid;
|
||||
}
|
||||
|
||||
@ -454,12 +454,11 @@ wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ)
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
cifs_setup_async_request(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
unsigned int nvec, struct mid_q_entry **ret_mid)
|
||||
struct mid_q_entry *
|
||||
cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc;
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)iov[0].iov_base;
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
/* enable signing if server requires it */
|
||||
@ -468,16 +467,15 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
|
||||
mid = AllocMidQEntry(hdr, server);
|
||||
if (mid == NULL)
|
||||
return -ENOMEM;
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
rc = cifs_sign_smbv(iov, nvec, server, &mid->sequence_number);
|
||||
rc = cifs_sign_rqst(rqst, server, &mid->sequence_number);
|
||||
if (rc) {
|
||||
DeleteMidQEntry(mid);
|
||||
return rc;
|
||||
return ERR_PTR(rc);
|
||||
}
|
||||
|
||||
*ret_mid = mid;
|
||||
return 0;
|
||||
return mid;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -485,9 +483,9 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
* the result. Caller is responsible for dealing with timeouts.
|
||||
*/
|
||||
int
|
||||
cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
unsigned int nvec, mid_receive_t *receive,
|
||||
mid_callback_t *callback, void *cbdata, const int flags)
|
||||
cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst,
|
||||
mid_receive_t *receive, mid_callback_t *callback,
|
||||
void *cbdata, const int flags)
|
||||
{
|
||||
int rc, timeout, optype;
|
||||
struct mid_q_entry *mid;
|
||||
@ -500,12 +498,12 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
return rc;
|
||||
|
||||
mutex_lock(&server->srv_mutex);
|
||||
rc = server->ops->setup_async_request(server, iov, nvec, &mid);
|
||||
if (rc) {
|
||||
mid = server->ops->setup_async_request(server, rqst);
|
||||
if (IS_ERR(mid)) {
|
||||
mutex_unlock(&server->srv_mutex);
|
||||
add_credits(server, 1, optype);
|
||||
wake_up(&server->request_q);
|
||||
return rc;
|
||||
return PTR_ERR(mid);
|
||||
}
|
||||
|
||||
mid->receive = receive;
|
||||
@ -520,7 +518,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
|
||||
|
||||
|
||||
cifs_in_send_inc(server);
|
||||
rc = smb_sendv(server, iov, nvec);
|
||||
rc = smb_send_rqst(server, rqst);
|
||||
cifs_in_send_dec(server);
|
||||
cifs_save_when_sent(mid);
|
||||
mutex_unlock(&server->srv_mutex);
|
||||
@ -630,22 +628,22 @@ cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
|
||||
return map_smb_to_linux_error(mid->resp_buf, log_error);
|
||||
}
|
||||
|
||||
int
|
||||
cifs_setup_request(struct cifs_ses *ses, struct kvec *iov,
|
||||
unsigned int nvec, struct mid_q_entry **ret_mid)
|
||||
struct mid_q_entry *
|
||||
cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
|
||||
{
|
||||
int rc;
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)iov[0].iov_base;
|
||||
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
|
||||
struct mid_q_entry *mid;
|
||||
|
||||
rc = allocate_mid(ses, hdr, &mid);
|
||||
if (rc)
|
||||
return rc;
|
||||
rc = cifs_sign_smbv(iov, nvec, ses->server, &mid->sequence_number);
|
||||
if (rc)
|
||||
return ERR_PTR(rc);
|
||||
rc = cifs_sign_rqst(rqst, ses->server, &mid->sequence_number);
|
||||
if (rc) {
|
||||
cifs_delete_mid(mid);
|
||||
*ret_mid = mid;
|
||||
return rc;
|
||||
return ERR_PTR(rc);
|
||||
}
|
||||
return mid;
|
||||
}
|
||||
|
||||
int
|
||||
@ -658,6 +656,8 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
struct mid_q_entry *midQ;
|
||||
char *buf = iov[0].iov_base;
|
||||
unsigned int credits = 1;
|
||||
struct smb_rqst rqst = { .rq_iov = iov,
|
||||
.rq_nvec = n_vec };
|
||||
|
||||
timeout = flags & CIFS_TIMEOUT_MASK;
|
||||
optype = flags & CIFS_OP_MASK;
|
||||
@ -695,13 +695,13 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses,
|
||||
|
||||
mutex_lock(&ses->server->srv_mutex);
|
||||
|
||||
rc = ses->server->ops->setup_request(ses, iov, n_vec, &midQ);
|
||||
if (rc) {
|
||||
midQ = ses->server->ops->setup_request(ses, &rqst);
|
||||
if (IS_ERR(midQ)) {
|
||||
mutex_unlock(&ses->server->srv_mutex);
|
||||
cifs_small_buf_release(buf);
|
||||
/* Update # of requests on wire to server */
|
||||
add_credits(ses->server, 1, optype);
|
||||
return rc;
|
||||
return PTR_ERR(midQ);
|
||||
}
|
||||
|
||||
midQ->mid_state = MID_REQUEST_SUBMITTED;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user