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authorRonnie Sahlberg <lsahlber@redhat.com>2018-08-08 15:07:45 +1000
committerSteve French <stfrench@microsoft.com>2018-08-09 21:19:45 -0500
commitb24df3e30cbf48255db866720fb71f14bf9d2f39 (patch)
tree9ca3cb0b9f8be1814f87b24dfe85b7714bbea3ad /fs/cifs/connect.c
parent1eb9fb52040fc6e5656c277b562229f09467c9f8 (diff)
cifs: update receive_encrypted_standard to handle compounded responses
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Paulo Alcantara <palcantara@suse.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Diffstat (limited to 'fs/cifs/connect.c')
-rw-r--r--fs/cifs/connect.c82
1 files changed, 50 insertions, 32 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index d9bd10d295a9..c832a8a1970a 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -850,13 +850,14 @@ cifs_handle_standard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
static int
cifs_demultiplex_thread(void *p)
{
- int length;
+ int i, num_mids, length;
struct TCP_Server_Info *server = p;
unsigned int pdu_length;
unsigned int next_offset;
char *buf = NULL;
struct task_struct *task_to_wake = NULL;
- struct mid_q_entry *mid_entry;
+ struct mid_q_entry *mids[MAX_COMPOUND];
+ char *bufs[MAX_COMPOUND];
current->flags |= PF_MEMALLOC;
cifs_dbg(FYI, "Demultiplex PID: %d\n", task_pid_nr(current));
@@ -923,58 +924,75 @@ next_pdu:
server->pdu_size = next_offset;
}
- mid_entry = NULL;
+ memset(mids, 0, sizeof(mids));
+ memset(bufs, 0, sizeof(bufs));
+ num_mids = 0;
+
if (server->ops->is_transform_hdr &&
server->ops->receive_transform &&
server->ops->is_transform_hdr(buf)) {
length = server->ops->receive_transform(server,
- &mid_entry);
+ mids,
+ bufs,
+ &num_mids);
} else {
- mid_entry = server->ops->find_mid(server, buf);
+ mids[0] = server->ops->find_mid(server, buf);
+ bufs[0] = buf;
+ if (mids[0])
+ num_mids = 1;
- if (!mid_entry || !mid_entry->receive)
- length = standard_receive3(server, mid_entry);
+ if (!mids[0] || !mids[0]->receive)
+ length = standard_receive3(server, mids[0]);
else
- length = mid_entry->receive(server, mid_entry);
+ length = mids[0]->receive(server, mids[0]);
}
if (length < 0) {
- if (mid_entry)
- cifs_mid_q_entry_release(mid_entry);
+ for (i = 0; i < num_mids; i++)
+ if (mids[i])
+ cifs_mid_q_entry_release(mids[i]);
continue;
}
if (server->large_buf)
buf = server->bigbuf;
+
server->lstrp = jiffies;
- if (mid_entry != NULL) {
- mid_entry->resp_buf_size = server->pdu_size;
- if ((mid_entry->mid_flags & MID_WAIT_CANCELLED) &&
- mid_entry->mid_state == MID_RESPONSE_RECEIVED &&
- server->ops->handle_cancelled_mid)
- server->ops->handle_cancelled_mid(
- mid_entry->resp_buf,
- server);
- if (!mid_entry->multiRsp || mid_entry->multiEnd)
- mid_entry->callback(mid_entry);
+ for (i = 0; i < num_mids; i++) {
+ if (mids[i] != NULL) {
+ mids[i]->resp_buf_size = server->pdu_size;
+ if ((mids[i]->mid_flags & MID_WAIT_CANCELLED) &&
+ mids[i]->mid_state == MID_RESPONSE_RECEIVED &&
+ server->ops->handle_cancelled_mid)
+ server->ops->handle_cancelled_mid(
+ mids[i]->resp_buf,
+ server);
- cifs_mid_q_entry_release(mid_entry);
- } else if (server->ops->is_oplock_break &&
- server->ops->is_oplock_break(buf, server)) {
- cifs_dbg(FYI, "Received oplock break\n");
- } else {
- cifs_dbg(VFS, "No task to wake, unknown frame received! NumMids %d\n",
- atomic_read(&midCount));
- cifs_dump_mem("Received Data is: ", buf,
- HEADER_SIZE(server));
+ if (!mids[i]->multiRsp || mids[i]->multiEnd)
+ mids[i]->callback(mids[i]);
+
+ cifs_mid_q_entry_release(mids[i]);
+ } else if (server->ops->is_oplock_break &&
+ server->ops->is_oplock_break(bufs[i],
+ server)) {
+ cifs_dbg(FYI, "Received oplock break\n");
+ } else {
+ cifs_dbg(VFS, "No task to wake, unknown frame "
+ "received! NumMids %d\n",
+ atomic_read(&midCount));
+ cifs_dump_mem("Received Data is: ", bufs[i],
+ HEADER_SIZE(server));
#ifdef CONFIG_CIFS_DEBUG2
- if (server->ops->dump_detail)
- server->ops->dump_detail(buf, server);
- cifs_dump_mids(server);
+ if (server->ops->dump_detail)
+ server->ops->dump_detail(bufs[i],
+ server);
+ cifs_dump_mids(server);
#endif /* CIFS_DEBUG2 */
+ }
}
+
if (pdu_length > server->pdu_size) {
if (!allocate_buffers(server))
continue;