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cifs: add server param

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As we get down to the transport layer, plenty of functions are passed
the session pointer and assume the transport to use is ses->server.

Instead we modify those functions to pass (ses, server) so that we
can decouple the session from the server.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Aurelien Aptel 2019-09-20 06:08:34 +02:00 committed by Steve French
parent bcc8880115
commit f780bd3fef
5 changed files with 22 additions and 17 deletions
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3
fs/cifs/cifsglob.h
View File

@ -230,7 +230,8 @@ struct smb_version_operations {
bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
/* setup request: allocate mid, sign message */
struct mid_q_entry *(*setup_request)(struct cifs_ses *,
struct smb_rqst *);
struct TCP_Server_Info *,
struct smb_rqst *);
/* setup async request: allocate mid, sign message */
struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
struct smb_rqst *);

1
fs/cifs/cifsproto.h
View File

@ -109,6 +109,7 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *,
extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses,
char *in_buf, int flags);
extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *,
struct TCP_Server_Info *,
struct smb_rqst *);
extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *,
struct smb_rqst *);

3
fs/cifs/smb2proto.h
View File

@ -46,7 +46,8 @@ 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 struct mid_q_entry *smb2_setup_request(struct cifs_ses *ses,
struct smb_rqst *rqst);
struct TCP_Server_Info *,
struct smb_rqst *rqst);
extern struct mid_q_entry *smb2_setup_async_request(
struct TCP_Server_Info *server, struct smb_rqst *rqst);
extern struct cifs_ses *smb2_find_smb_ses(struct TCP_Server_Info *server,

27
fs/cifs/smb2transport.c
View File

@ -610,18 +610,18 @@ smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr,
}
static int
smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr,
struct mid_q_entry **mid)
smb2_get_mid_entry(struct cifs_ses *ses, struct TCP_Server_Info *server,
struct smb2_sync_hdr *shdr, struct mid_q_entry **mid)
{
if (ses->server->tcpStatus == CifsExiting)
if (server->tcpStatus == CifsExiting)
return -ENOENT;
if (ses->server->tcpStatus == CifsNeedReconnect) {
if (server->tcpStatus == CifsNeedReconnect) {
cifs_dbg(FYI, "tcp session dead - return to caller to retry\n");
return -EAGAIN;
}
if (ses->server->tcpStatus == CifsNeedNegotiate &&
if (server->tcpStatus == CifsNeedNegotiate &&
shdr->Command != SMB2_NEGOTIATE)
return -EAGAIN;
@ -638,11 +638,11 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr,
/* else ok - we are shutting down the session */
}
*mid = smb2_mid_entry_alloc(shdr, ses->server);
*mid = smb2_mid_entry_alloc(shdr, server);
if (*mid == NULL)
return -ENOMEM;
spin_lock(&GlobalMid_Lock);
list_add_tail(&(*mid)->qhead, &ses->server->pending_mid_q);
list_add_tail(&(*mid)->qhead, &server->pending_mid_q);
spin_unlock(&GlobalMid_Lock);
return 0;
@ -675,24 +675,25 @@ smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
}
struct mid_q_entry *
smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
smb2_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *server,
struct smb_rqst *rqst)
{
int rc;
struct smb2_sync_hdr *shdr =
(struct smb2_sync_hdr *)rqst->rq_iov[0].iov_base;
struct mid_q_entry *mid;
smb2_seq_num_into_buf(ses->server, shdr);
smb2_seq_num_into_buf(server, shdr);
rc = smb2_get_mid_entry(ses, shdr, &mid);
rc = smb2_get_mid_entry(ses, server, shdr, &mid);
if (rc) {
revert_current_mid_from_hdr(ses->server, shdr);
revert_current_mid_from_hdr(server, shdr);
return ERR_PTR(rc);
}
rc = smb2_sign_rqst(rqst, ses->server);
rc = smb2_sign_rqst(rqst, server);
if (rc) {
revert_current_mid_from_hdr(ses->server, shdr);
revert_current_mid_from_hdr(server, shdr);
cifs_delete_mid(mid);
return ERR_PTR(rc);
}

5
fs/cifs/transport.c
View File

@ -936,7 +936,8 @@ cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
}
struct mid_q_entry *
cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
cifs_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *ignored,
struct smb_rqst *rqst)
{
int rc;
struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
@ -1053,7 +1054,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
}
for (i = 0; i < num_rqst; i++) {
midQ[i] = server->ops->setup_request(ses, &rqst[i]);
midQ[i] = server->ops->setup_request(ses, server, &rqst[i]);
if (IS_ERR(midQ[i])) {
revert_current_mid(server, i);
for (j = 0; j < i; j++)