Merge branches 'misc', 'qedr', 'reject-helpers', 'rxe' and 'srp' into merge-test

2016-12-14 14:44:47 -05:00
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -575,8 +575,11 @@ void ipoib_mcast_join_task(struct work_struct *work)
 	if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags))
 		return;

-	if (ib_query_port(priv->ca, priv->port, &port_attr) ||
-	    port_attr.state != IB_PORT_ACTIVE) {
+	if (ib_query_port(priv->ca, priv->port, &port_attr)) {
+		ipoib_dbg(priv, "ib_query_port() failed\n");
+		return;
+	}
+	if (port_attr.state != IB_PORT_ACTIVE) {
 		ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n",
 			  port_attr.state);
 		return;
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -890,11 +890,14 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve
 	case RDMA_CM_EVENT_ESTABLISHED:
 		iser_connected_handler(cma_id, event->param.conn.private_data);
 		break;
+	case RDMA_CM_EVENT_REJECTED:
+		iser_info("Connection rejected: %s\n",
+			 rdma_reject_msg(cma_id, event->status));
+		/* FALLTHROUGH */
 	case RDMA_CM_EVENT_ADDR_ERROR:
 	case RDMA_CM_EVENT_ROUTE_ERROR:
 	case RDMA_CM_EVENT_CONNECT_ERROR:
 	case RDMA_CM_EVENT_UNREACHABLE:
-	case RDMA_CM_EVENT_REJECTED:
 		iser_connect_error(cma_id);
 		break;
 	case RDMA_CM_EVENT_DISCONNECTED:
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -789,6 +789,8 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
 		 */
 		return 1;
 	case RDMA_CM_EVENT_REJECTED:       /* FALLTHRU */
+		isert_info("Connection rejected: %s\n",
+			   rdma_reject_msg(cma_id, event->status));
 	case RDMA_CM_EVENT_UNREACHABLE:    /* FALLTHRU */
 	case RDMA_CM_EVENT_CONNECT_ERROR:
 		ret = isert_connect_error(cma_id);
@@ -1842,6 +1844,8 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
 		isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
 				(void *)cmd->sense_buffer, pdu_len,
 				DMA_TO_DEVICE);
+		if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+			return -ENOMEM;

 		isert_cmd->pdu_buf_len = pdu_len;
 		tx_dsg->addr	= isert_cmd->pdu_buf_dma;
@@ -1969,6 +1973,8 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
 	isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
 			(void *)cmd->buf_ptr, ISCSI_HDR_LEN,
 			DMA_TO_DEVICE);
+	if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+		return -ENOMEM;
 	isert_cmd->pdu_buf_len = ISCSI_HDR_LEN;
 	tx_dsg->addr	= isert_cmd->pdu_buf_dma;
 	tx_dsg->length	= ISCSI_HDR_LEN;
@@ -2009,6 +2015,8 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)

 		isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
 				txt_rsp_buf, txt_rsp_len, DMA_TO_DEVICE);
+		if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+			return -ENOMEM;

 		isert_cmd->pdu_buf_len = txt_rsp_len;
 		tx_dsg->addr	= isert_cmd->pdu_buf_dma;
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -64,6 +64,11 @@ MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(DRV_VERSION);
 MODULE_INFO(release_date, DRV_RELDATE);

+#if !defined(CONFIG_DYNAMIC_DEBUG)
+#define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt)
+#define DYNAMIC_DEBUG_BRANCH(descriptor) false
+#endif
+
 static unsigned int srp_sg_tablesize;
 static unsigned int cmd_sg_entries;
 static unsigned int indirect_sg_entries;
@@ -384,6 +389,9 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
 				 max_page_list_len);
 		if (IS_ERR(mr)) {
 			ret = PTR_ERR(mr);
+			if (ret == -ENOMEM)
+				pr_info("%s: ib_alloc_mr() failed. Try to reduce max_cmd_per_lun, max_sect or ch_count\n",
+					dev_name(&device->dev));
 			goto destroy_pool;
 		}
 		d->mr = mr;
@@ -1266,8 +1274,12 @@ static int srp_map_finish_fmr(struct srp_map_state *state,
 	struct ib_pool_fmr *fmr;
 	u64 io_addr = 0;

-	if (state->fmr.next >= state->fmr.end)
+	if (state->fmr.next >= state->fmr.end) {
+		shost_printk(KERN_ERR, ch->target->scsi_host,
+			     PFX "Out of MRs (mr_per_cmd = %d)\n",
+			     ch->target->mr_per_cmd);
 		return -ENOMEM;
+	}

 	WARN_ON_ONCE(!dev->use_fmr);

@@ -1323,8 +1335,12 @@ static int srp_map_finish_fr(struct srp_map_state *state,
 	u32 rkey;
 	int n, err;

-	if (state->fr.next >= state->fr.end)
+	if (state->fr.next >= state->fr.end) {
+		shost_printk(KERN_ERR, ch->target->scsi_host,
+			     PFX "Out of MRs (mr_per_cmd = %d)\n",
+			     ch->target->mr_per_cmd);
 		return -ENOMEM;
+	}

 	WARN_ON_ONCE(!dev->use_fast_reg);

@@ -1556,7 +1572,6 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req,
 	return 0;
 }

-#if defined(DYNAMIC_DATA_DEBUG)
 static void srp_check_mapping(struct srp_map_state *state,
 			      struct srp_rdma_ch *ch, struct srp_request *req,
 			      struct scatterlist *scat, int count)
@@ -1580,7 +1595,6 @@ static void srp_check_mapping(struct srp_map_state *state,
 		       scsi_bufflen(req->scmnd), desc_len, mr_len,
 		       state->ndesc, state->nmdesc);
 }
-#endif

 /**
 * srp_map_data() - map SCSI data buffer onto an SRP request
@@ -1669,14 +1683,12 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_rdma_ch *ch,
 	if (ret < 0)
 		goto unmap;

-#if defined(DYNAMIC_DEBUG)
 	{
 		DEFINE_DYNAMIC_DEBUG_METADATA(ddm,
 			"Memory mapping consistency check");
-		if (unlikely(ddm.flags & _DPRINTK_FLAGS_PRINT))
+		if (DYNAMIC_DEBUG_BRANCH(ddm))
 			srp_check_mapping(&state, ch, req, scat, count);
 	}
-#endif

 	/* We've mapped the request, now pull as much of the indirect
 	 * descriptor table as we can into the command buffer. If this
@@ -3287,7 +3299,9 @@ static ssize_t srp_create_target(struct device *dev,
 	 */
 	scsi_host_get(target->scsi_host);

-	mutex_lock(&host->add_target_mutex);
+	ret = mutex_lock_interruptible(&host->add_target_mutex);
+	if (ret < 0)
+		goto put;

 	ret = srp_parse_options(buf, target);
 	if (ret)
@@ -3443,6 +3457,7 @@ connected:
 out:
 	mutex_unlock(&host->add_target_mutex);

+put:
 	scsi_host_put(target->scsi_host);
 	if (ret < 0)
 		scsi_host_put(target->scsi_host);
@@ -3526,6 +3541,7 @@ free_host:
 static void srp_add_one(struct ib_device *device)
 {
 	struct srp_device *srp_dev;
+	struct ib_device_attr *attr = &device->attrs;
 	struct srp_host *host;
 	int mr_page_shift, p;
 	u64 max_pages_per_mr;
@@ -3540,25 +3556,25 @@ static void srp_add_one(struct ib_device *device)
 	 * minimum of 4096 bytes. We're unlikely to build large sglists
 	 * out of smaller entries.
 	 */
-	mr_page_shift		= max(12, ffs(device->attrs.page_size_cap) - 1);
+	mr_page_shift		= max(12, ffs(attr->page_size_cap) - 1);
 	srp_dev->mr_page_size	= 1 << mr_page_shift;
 	srp_dev->mr_page_mask	= ~((u64) srp_dev->mr_page_size - 1);
-	max_pages_per_mr	= device->attrs.max_mr_size;
+	max_pages_per_mr	= attr->max_mr_size;
 	do_div(max_pages_per_mr, srp_dev->mr_page_size);
 	pr_debug("%s: %llu / %u = %llu <> %u\n", __func__,
-		 device->attrs.max_mr_size, srp_dev->mr_page_size,
+		 attr->max_mr_size, srp_dev->mr_page_size,
 		 max_pages_per_mr, SRP_MAX_PAGES_PER_MR);
 	srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR,
 					  max_pages_per_mr);

 	srp_dev->has_fmr = (device->alloc_fmr && device->dealloc_fmr &&
 			    device->map_phys_fmr && device->unmap_fmr);
-	srp_dev->has_fr = (device->attrs.device_cap_flags &
+	srp_dev->has_fr = (attr->device_cap_flags &
 			   IB_DEVICE_MEM_MGT_EXTENSIONS);
 	if (!never_register && !srp_dev->has_fmr && !srp_dev->has_fr) {
 		dev_warn(&device->dev, "neither FMR nor FR is supported\n");
 	} else if (!never_register &&
-		   device->attrs.max_mr_size >= 2 * srp_dev->mr_page_size) {
+		   attr->max_mr_size >= 2 * srp_dev->mr_page_size) {
 		srp_dev->use_fast_reg = (srp_dev->has_fr &&
 					 (!srp_dev->has_fmr || prefer_fr));
 		srp_dev->use_fmr = !srp_dev->use_fast_reg && srp_dev->has_fmr;
@@ -3571,13 +3587,13 @@ static void srp_add_one(struct ib_device *device)
 	if (srp_dev->use_fast_reg) {
 		srp_dev->max_pages_per_mr =
 			min_t(u32, srp_dev->max_pages_per_mr,
-			      device->attrs.max_fast_reg_page_list_len);
+			      attr->max_fast_reg_page_list_len);
 	}
 	srp_dev->mr_max_size	= srp_dev->mr_page_size *
 				   srp_dev->max_pages_per_mr;
 	pr_debug("%s: mr_page_shift = %d, device->max_mr_size = %#llx, device->max_fast_reg_page_list_len = %u, max_pages_per_mr = %d, mr_max_size = %#x\n",
-		 device->name, mr_page_shift, device->attrs.max_mr_size,
-		 device->attrs.max_fast_reg_page_list_len,
+		 device->name, mr_page_shift, attr->max_mr_size,
+		 attr->max_fast_reg_page_list_len,
 		 srp_dev->max_pages_per_mr, srp_dev->mr_max_size);

 	INIT_LIST_HEAD(&srp_dev->dev_list);
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1840,7 +1840,6 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
 	struct srpt_rdma_ch *ch, *tmp_ch;
 	u32 it_iu_len;
 	int i, ret = 0;
-	unsigned char *p;

 	WARN_ON_ONCE(irqs_disabled());

@@ -1994,21 +1993,18 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
 			be64_to_cpu(*(__be64 *)(ch->i_port_id + 8)));

 	pr_debug("registering session %s\n", ch->sess_name);
-	p = &ch->sess_name[0];

-try_again:
 	ch->sess = target_alloc_session(&sport->port_tpg_1, 0, 0,
-					TARGET_PROT_NORMAL, p, ch, NULL);
+					TARGET_PROT_NORMAL, ch->sess_name, ch,
+					NULL);
+	/* Retry without leading "0x" */
+	if (IS_ERR(ch->sess))
+		ch->sess = target_alloc_session(&sport->port_tpg_1, 0, 0,
+						TARGET_PROT_NORMAL,
+						ch->sess_name + 2, ch, NULL);
 	if (IS_ERR(ch->sess)) {
-		pr_info("Rejected login because no ACL has been"
-			" configured yet for initiator %s.\n", p);
-		/*
-		 * XXX: Hack to retry of ch->i_port_id without leading '0x'
-		 */
-		if (p == &ch->sess_name[0]) {
-			p += 2;
-			goto try_again;
-		}
+		pr_info("Rejected login because no ACL has been configured yet for initiator %s.\n",
+			ch->sess_name);
 		rej->reason = cpu_to_be32((PTR_ERR(ch->sess) == -ENOMEM) ?
 				SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES :
 				SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED);