diff options
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 18 | ||||
| -rw-r--r-- | drivers/scsi/iscsi_tcp.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/libiscsi.c | 5 | ||||
| -rw-r--r-- | include/scsi/libiscsi.h | 1 |
4 files changed, 15 insertions, 11 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 8201e6c4d8a..17fc79c408a 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -229,10 +229,13 @@ iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) if (tcp_conn->in.datalen == 0) return 0; - if (ctask->datasn != datasn) + if (tcp_ctask->exp_datasn != datasn) { + debug_tcp("%s: ctask->exp_datasn(%d) != rhdr->datasn(%d)\n", + __FUNCTION__, tcp_ctask->exp_datasn, datasn); return ISCSI_ERR_DATASN; + } - ctask->datasn++; + tcp_ctask->exp_datasn++; tcp_ctask->data_offset = be32_to_cpu(rhdr->offset); if (tcp_ctask->data_offset + tcp_conn->in.datalen > ctask->total_length) @@ -365,15 +368,16 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) return ISCSI_ERR_DATALEN; } - if (tcp_ctask->exp_r2tsn && tcp_ctask->exp_r2tsn != r2tsn) + if (tcp_ctask->exp_datasn != r2tsn){ + debug_tcp("%s: ctask->exp_datasn(%d) != rhdr->r2tsn(%d)\n", + __FUNCTION__, tcp_ctask->exp_datasn, r2tsn); return ISCSI_ERR_R2TSN; + } rc = iscsi_check_assign_cmdsn(session, (struct iscsi_nopin*)rhdr); if (rc) return rc; - /* FIXME: use R2TSN to detect missing R2T */ - /* fill-in new R2T associated with the task */ spin_lock(&session->lock); if (!ctask->sc || ctask->mtask || @@ -414,7 +418,7 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) iscsi_solicit_data_init(conn, ctask, r2t); - tcp_ctask->exp_r2tsn = r2tsn + 1; + tcp_ctask->exp_datasn = r2tsn + 1; __kfifo_put(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*)); tcp_ctask->xmstate |= XMSTATE_SOL_HDR; list_move_tail(&ctask->running, &conn->xmitqueue); @@ -1284,10 +1288,10 @@ iscsi_tcp_cmd_init(struct iscsi_cmd_task *ctask) tcp_ctask->sent = 0; tcp_ctask->sg_count = 0; + tcp_ctask->exp_datasn = 0; if (sc->sc_data_direction == DMA_TO_DEVICE) { tcp_ctask->xmstate = XMSTATE_W_HDR; - tcp_ctask->exp_r2tsn = 0; BUG_ON(ctask->total_length == 0); if (sc->use_sg) { diff --git a/drivers/scsi/iscsi_tcp.h b/drivers/scsi/iscsi_tcp.h index 32736831790..f909edbf61e 100644 --- a/drivers/scsi/iscsi_tcp.h +++ b/drivers/scsi/iscsi_tcp.h @@ -152,7 +152,7 @@ struct iscsi_tcp_cmd_task { struct scatterlist *sg; /* per-cmd SG list */ struct scatterlist *bad_sg; /* assert statement */ int sg_count; /* SG's to process */ - uint32_t exp_r2tsn; + uint32_t exp_datasn; /* expected target's R2TSN/DataSN */ int data_offset; struct iscsi_r2t_info *r2t; /* in progress R2T */ struct iscsi_queue r2tpool; diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 5e6a42429c3..eb511360795 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -120,7 +120,9 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask) session->cmdsn++; hdr->exp_statsn = cpu_to_be32(conn->exp_statsn); memcpy(hdr->cdb, sc->cmnd, sc->cmd_len); - memset(&hdr->cdb[sc->cmd_len], 0, MAX_COMMAND_SIZE - sc->cmd_len); + if (sc->cmd_len < MAX_COMMAND_SIZE) + memset(&hdr->cdb[sc->cmd_len], 0, + MAX_COMMAND_SIZE - sc->cmd_len); ctask->data_count = 0; if (sc->sc_data_direction == DMA_TO_DEVICE) { @@ -165,7 +167,6 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask) /* No unsolicit Data-Out's */ ctask->hdr->flags |= ISCSI_FLAG_CMD_FINAL; } else { - ctask->datasn = 0; hdr->flags |= ISCSI_FLAG_CMD_FINAL; zero_data(hdr->dlength); diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index deae90a56a0..61e069206ac 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -99,7 +99,6 @@ struct iscsi_cmd_task { */ struct iscsi_cmd *hdr; int itt; /* this ITT */ - int datasn; /* DataSN */ uint32_t unsol_datasn; int imm_count; /* imm-data (bytes) */ |