diff options
| -rw-r--r-- | fs/cifs/smb2ops.c | 55 |
1 files changed, 46 insertions, 9 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index efedec2b66c6..b3b2abbb49b9 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -264,7 +264,7 @@ smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) } static struct mid_q_entry * -smb2_find_mid(struct TCP_Server_Info *server, char *buf) +__smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) { struct mid_q_entry *mid; struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; @@ -281,6 +281,10 @@ smb2_find_mid(struct TCP_Server_Info *server, char *buf) (mid->mid_state == MID_REQUEST_SUBMITTED) && (mid->command == shdr->Command)) { kref_get(&mid->refcount); + if (dequeue) { + list_del_init(&mid->qhead); + mid->mid_flags |= MID_DELETED; + } spin_unlock(&GlobalMid_Lock); return mid; } @@ -289,6 +293,18 @@ smb2_find_mid(struct TCP_Server_Info *server, char *buf) return NULL; } +static struct mid_q_entry * +smb2_find_mid(struct TCP_Server_Info *server, char *buf) +{ + return __smb2_find_mid(server, buf, false); +} + +static struct mid_q_entry * +smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf) +{ + return __smb2_find_mid(server, buf, true); +} + static void smb2_dump_detail(void *buf, struct TCP_Server_Info *server) { @@ -4404,7 +4420,10 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, cifs_dbg(FYI, "%s: server returned error %d\n", __func__, rdata->result); /* normal error on read response */ - dequeue_mid(mid, false); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_RECEIVED; + else + dequeue_mid(mid, false); return 0; } @@ -4428,7 +4447,10 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", __func__, data_offset); rdata->result = -EIO; - dequeue_mid(mid, rdata->result); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_MALFORMED; + else + dequeue_mid(mid, rdata->result); return 0; } @@ -4444,21 +4466,30 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", __func__, data_offset); rdata->result = -EIO; - dequeue_mid(mid, rdata->result); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_MALFORMED; + else + dequeue_mid(mid, rdata->result); return 0; } if (data_len > page_data_size - pad_len) { /* data_len is corrupt -- discard frame */ rdata->result = -EIO; - dequeue_mid(mid, rdata->result); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_MALFORMED; + else + dequeue_mid(mid, rdata->result); return 0; } rdata->result = init_read_bvec(pages, npages, page_data_size, cur_off, &bvec); if (rdata->result != 0) { - dequeue_mid(mid, rdata->result); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_MALFORMED; + else + dequeue_mid(mid, rdata->result); return 0; } @@ -4473,7 +4504,10 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, /* read response payload cannot be in both buf and pages */ WARN_ONCE(1, "buf can not contain only a part of read data"); rdata->result = -EIO; - dequeue_mid(mid, rdata->result); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_MALFORMED; + else + dequeue_mid(mid, rdata->result); return 0; } @@ -4484,7 +4518,10 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, if (length < 0) return length; - dequeue_mid(mid, false); + if (is_offloaded) + mid->mid_state = MID_RESPONSE_RECEIVED; + else + dequeue_mid(mid, false); return length; } @@ -4513,7 +4550,7 @@ static void smb2_decrypt_offload(struct work_struct *work) } dw->server->lstrp = jiffies; - mid = smb2_find_mid(dw->server, dw->buf); + mid = smb2_find_dequeue_mid(dw->server, dw->buf); if (mid == NULL) cifs_dbg(FYI, "mid not found\n"); else { |