cifs: on send failure, readjust server sequence number downward
If sending a call to the server fails for some reason (for instance, the
sending thread caught a signal), then we must readjust the sequence
number downward again or the next send will have it too high.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 653bf26..293d2c8 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -522,6 +522,9 @@
rc = smb_send_rqst(server, rqst);
cifs_in_send_dec(server);
cifs_save_when_sent(mid);
+
+ if (rc < 0)
+ server->sequence_number -= 2;
mutex_unlock(&server->srv_mutex);
if (rc == 0)
@@ -711,6 +714,8 @@
cifs_in_send_dec(ses->server);
cifs_save_when_sent(midQ);
+ if (rc < 0)
+ ses->server->sequence_number -= 2;
mutex_unlock(&ses->server->srv_mutex);
if (rc < 0) {
@@ -835,6 +840,10 @@
rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
cifs_in_send_dec(ses->server);
cifs_save_when_sent(midQ);
+
+ if (rc < 0)
+ ses->server->sequence_number -= 2;
+
mutex_unlock(&ses->server->srv_mutex);
if (rc < 0)
@@ -968,6 +977,10 @@
rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
cifs_in_send_dec(ses->server);
cifs_save_when_sent(midQ);
+
+ if (rc < 0)
+ ses->server->sequence_number -= 2;
+
mutex_unlock(&ses->server->srv_mutex);
if (rc < 0) {