Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull InfiniBand/RDMA changes from Roland Dreier:
 - XRC transport fixes
 - Fix DHCP on IPoIB
 - mlx4 preparations for flow steering
 - iSER fixes
 - miscellaneous other fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (23 commits)
  IB/iser: Add support for iser CM REQ additional info
  IB/iser: Return error to upper layers on EAGAIN registration failures
  IB/iser: Move informational messages from error to info level
  IB/iser: Add module version
  mlx4_core: Expose a few helpers to fill DMFS HW strucutures
  mlx4_core: Directly expose fields of DMFS HW rule control segment
  mlx4_core: Change a few DMFS fields names to match firmare spec
  mlx4: Match DMFS promiscuous field names to firmware spec
  mlx4_core: Move DMFS HW structs to common header file
  IB/mlx4: Set link type for RAW PACKET QPs in the QP context
  IB/mlx4: Disable VLAN stripping for RAW PACKET QPs
  mlx4_core: Reduce warning message for SRQ_LIMIT event to debug level
  RDMA/iwcm: Don't touch cmid after dropping reference
  IB/qib: Correct qib_verbs_register_sysfs() error handling
  IB/ipath: Correct ipath_verbs_register_sysfs() error handling
  RDMA/cxgb4: Fix SQ allocation when on-chip SQ is disabled
  SRPT: Fix odd use of WARN_ON()
  IPoIB: Fix ipoib_hard_header() return value
  RDMA: Rename random32() to prandom_u32()
  RDMA/cxgb3: Fix uninitialized variable
  ...

6 files changed, 58 insertions, 33 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 554b9063da5..b6e049a3c7a 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -830,7 +830,7 @@ static int ipoib_hard_header(struct sk_buff *skb,
 	 */
 	memcpy(cb->hwaddr, daddr, INFINIBAND_ALEN);
 
-	return 0;
+	return sizeof *header;
 }
 
 static void ipoib_set_mcast_list(struct net_device *dev)
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 0ab8c9cc3a7..f19b0998a53 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -82,10 +82,10 @@ module_param_named(max_lun, iscsi_max_lun, uint, S_IRUGO);
 
 int iser_debug_level = 0;
 
-MODULE_DESCRIPTION("iSER (iSCSI Extensions for RDMA) Datamover "
-		   "v" DRV_VER " (" DRV_DATE ")");
+MODULE_DESCRIPTION("iSER (iSCSI Extensions for RDMA) Datamover");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Alex Nezhinsky, Dan Bar Dov, Or Gerlitz");
+MODULE_VERSION(DRV_VER);
 
 module_param_named(debug_level, iser_debug_level, int, 0644);
 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:disabled)");
@@ -370,8 +370,8 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
 	/* binds the iSER connection retrieved from the previously
 	 * connected ep_handle to the iSCSI layer connection. exchanges
 	 * connection pointers */
-	iser_err("binding iscsi/iser conn %p %p to ib_conn %p\n",
-					conn, conn->dd_data, ib_conn);
+	iser_info("binding iscsi/iser conn %p %p to ib_conn %p\n",
+		  conn, conn->dd_data, ib_conn);
 	iser_conn = conn->dd_data;
 	ib_conn->iser_conn = iser_conn;
 	iser_conn->ib_conn  = ib_conn;
@@ -475,28 +475,28 @@ iscsi_iser_set_param(struct iscsi_cls_conn *cls_conn,
 	case ISCSI_PARAM_HDRDGST_EN:
 		sscanf(buf, "%d", &value);
 		if (value) {
-			printk(KERN_ERR "DataDigest wasn't negotiated to None");
+			iser_err("DataDigest wasn't negotiated to None");
 			return -EPROTO;
 		}
 		break;
 	case ISCSI_PARAM_DATADGST_EN:
 		sscanf(buf, "%d", &value);
 		if (value) {
-			printk(KERN_ERR "DataDigest wasn't negotiated to None");
+			iser_err("DataDigest wasn't negotiated to None");
 			return -EPROTO;
 		}
 		break;
 	case ISCSI_PARAM_IFMARKER_EN:
 		sscanf(buf, "%d", &value);
 		if (value) {
-			printk(KERN_ERR "IFMarker wasn't negotiated to No");
+			iser_err("IFMarker wasn't negotiated to No");
 			return -EPROTO;
 		}
 		break;
 	case ISCSI_PARAM_OFMARKER_EN:
 		sscanf(buf, "%d", &value);
 		if (value) {
-			printk(KERN_ERR "OFMarker wasn't negotiated to No");
+			iser_err("OFMarker wasn't negotiated to No");
 			return -EPROTO;
 		}
 		break;
@@ -596,7 +596,7 @@ iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 	     ib_conn->state == ISER_CONN_DOWN))
 		rc = -1;
 
-	iser_err("ib conn %p rc = %d\n", ib_conn, rc);
+	iser_info("ib conn %p rc = %d\n", ib_conn, rc);
 
 	if (rc > 0)
 		return 1; /* success, this is the equivalent of POLLOUT */
@@ -623,7 +623,7 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
 		iscsi_suspend_tx(ib_conn->iser_conn->iscsi_conn);
 
 
-	iser_err("ib conn %p state %d\n",ib_conn, ib_conn->state);
+	iser_info("ib conn %p state %d\n", ib_conn, ib_conn->state);
 	iser_conn_terminate(ib_conn);
 }
 
@@ -682,7 +682,7 @@ static umode_t iser_attr_is_visible(int param_type, int param)
 
 static struct scsi_host_template iscsi_iser_sht = {
 	.module                 = THIS_MODULE,
-	.name                   = "iSCSI Initiator over iSER, v." DRV_VER,
+	.name                   = "iSCSI Initiator over iSER",
 	.queuecommand           = iscsi_queuecommand,
 	.change_queue_depth	= iscsi_change_queue_depth,
 	.sg_tablesize           = ISCSI_ISER_SG_TABLESIZE,
@@ -740,7 +740,7 @@ static int __init iser_init(void)
 	iser_dbg("Starting iSER datamover...\n");
 
 	if (iscsi_max_lun < 1) {
-		printk(KERN_ERR "Invalid max_lun value of %u\n", iscsi_max_lun);
+		iser_err("Invalid max_lun value of %u\n", iscsi_max_lun);
 		return -EINVAL;
 	}
 
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 5babdb35bda..06f578cde75 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -42,6 +42,7 @@
 
 #include <linux/types.h>
 #include <linux/net.h>
+#include <linux/printk.h>
 #include <scsi/libiscsi.h>
 #include <scsi/scsi_transport_iscsi.h>
 
@@ -65,20 +66,26 @@
 
 #define DRV_NAME	"iser"
 #define PFX		DRV_NAME ": "
-#define DRV_VER		"0.1"
-#define DRV_DATE	"May 7th, 2006"
+#define DRV_VER		"1.1"
 
 #define iser_dbg(fmt, arg...)				\
 	do {						\
-		if (iser_debug_level > 1)		\
+		if (iser_debug_level > 2)		\
 			printk(KERN_DEBUG PFX "%s:" fmt,\
 				__func__ , ## arg);	\
 	} while (0)
 
 #define iser_warn(fmt, arg...)				\
 	do {						\
+		if (iser_debug_level > 1)		\
+			pr_warn(PFX "%s:" fmt,          \
+				__func__ , ## arg);	\
+	} while (0)
+
+#define iser_info(fmt, arg...)				\
+	do {						\
 		if (iser_debug_level > 0)		\
-			printk(KERN_DEBUG PFX "%s:" fmt,\
+			pr_info(PFX "%s:" fmt,          \
 				__func__ , ## arg);	\
 	} while (0)
 
@@ -133,6 +140,15 @@ struct iser_hdr {
 	__be64  read_va;
 } __attribute__((packed));
 
+
+#define ISER_ZBVA_NOT_SUPPORTED		0x80
+#define ISER_SEND_W_INV_NOT_SUPPORTED	0x40
+
+struct iser_cm_hdr {
+	u8      flags;
+	u8      rsvd[3];
+} __packed;
+
 /* Constant PDU lengths calculations */
 #define ISER_HEADERS_LEN  (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr))
 
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index be1edb04b08..68ebb7fe072 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -416,8 +416,9 @@ int iser_reg_rdma_mem(struct iscsi_iser_task *iser_task,
 			for (i=0 ; i<ib_conn->page_vec->length ; i++)
 				iser_err("page_vec[%d] = 0x%llx\n", i,
 					 (unsigned long long) ib_conn->page_vec->pages[i]);
-			return err;
 		}
+		if (err)
+			return err;
 	}
 	return 0;
 }
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 4debadc5310..5278916c310 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -74,8 +74,9 @@ static int iser_create_device_ib_res(struct iser_device *device)
 	struct iser_cq_desc *cq_desc;
 
 	device->cqs_used = min(ISER_MAX_CQ, device->ib_device->num_comp_vectors);
-	iser_err("using %d CQs, device %s supports %d vectors\n", device->cqs_used,
-		 device->ib_device->name, device->ib_device->num_comp_vectors);
+	iser_info("using %d CQs, device %s supports %d vectors\n",
+		  device->cqs_used, device->ib_device->name,
+		  device->ib_device->num_comp_vectors);
 
 	device->cq_desc = kmalloc(sizeof(struct iser_cq_desc) * device->cqs_used,
 				  GFP_KERNEL);
@@ -262,7 +263,7 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn)
 			min_index = index;
 	device->cq_active_qps[min_index]++;
 	mutex_unlock(&ig.connlist_mutex);
-	iser_err("cq index %d used for ib_conn %p\n", min_index, ib_conn);
+	iser_info("cq index %d used for ib_conn %p\n", min_index, ib_conn);
 
 	init_attr.event_handler = iser_qp_event_callback;
 	init_attr.qp_context	= (void *)ib_conn;
@@ -280,9 +281,9 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn)
 		goto out_err;
 
 	ib_conn->qp = ib_conn->cma_id->qp;
-	iser_err("setting conn %p cma_id %p: fmr_pool %p qp %p\n",
-		 ib_conn, ib_conn->cma_id,
-		 ib_conn->fmr_pool, ib_conn->cma_id->qp);
+	iser_info("setting conn %p cma_id %p: fmr_pool %p qp %p\n",
+		  ib_conn, ib_conn->cma_id,
+		  ib_conn->fmr_pool, ib_conn->cma_id->qp);
 	return ret;
 
 out_err:
@@ -299,9 +300,9 @@ static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id)
 	int cq_index;
 	BUG_ON(ib_conn == NULL);
 
-	iser_err("freeing conn %p cma_id %p fmr pool %p qp %p\n",
-		 ib_conn, ib_conn->cma_id,
-		 ib_conn->fmr_pool, ib_conn->qp);
+	iser_info("freeing conn %p cma_id %p fmr pool %p qp %p\n",
+		  ib_conn, ib_conn->cma_id,
+		  ib_conn->fmr_pool, ib_conn->qp);
 
 	/* qp is created only once both addr & route are resolved */
 	if (ib_conn->fmr_pool != NULL)
@@ -379,7 +380,7 @@ static void iser_device_try_release(struct iser_device *device)
 {
 	mutex_lock(&ig.device_list_mutex);
 	device->refcount--;
-	iser_err("device %p refcount %d\n",device,device->refcount);
+	iser_info("device %p refcount %d\n", device, device->refcount);
 	if (!device->refcount) {
 		iser_free_device_ib_res(device);
 		list_del(&device->ig_list);
@@ -498,6 +499,7 @@ static int iser_route_handler(struct rdma_cm_id *cma_id)
 {
 	struct rdma_conn_param conn_param;
 	int    ret;
+	struct iser_cm_hdr req_hdr;
 
 	ret = iser_create_ib_conn_res((struct iser_conn *)cma_id->context);
 	if (ret)
@@ -509,6 +511,12 @@ static int iser_route_handler(struct rdma_cm_id *cma_id)
 	conn_param.retry_count	       = 7;
 	conn_param.rnr_retry_count     = 6;
 
+	memset(&req_hdr, 0, sizeof(req_hdr));
+	req_hdr.flags = (ISER_ZBVA_NOT_SUPPORTED |
+			ISER_SEND_W_INV_NOT_SUPPORTED);
+	conn_param.private_data		= (void *)&req_hdr;
+	conn_param.private_data_len	= sizeof(struct iser_cm_hdr);
+
 	ret = rdma_connect(cma_id, &conn_param);
 	if (ret) {
 		iser_err("failure connecting: %d\n", ret);
@@ -558,8 +566,8 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve
 {
 	int ret = 0;
 
-	iser_err("event %d status %d conn %p id %p\n",
-		event->event, event->status, cma_id->context, cma_id);
+	iser_info("event %d status %d conn %p id %p\n",
+		  event->event, event->status, cma_id->context, cma_id);
 
 	switch (event->event) {
 	case RDMA_CM_EVENT_ADDR_RESOLVED:
@@ -619,8 +627,8 @@ int iser_connect(struct iser_conn   *ib_conn,
 	/* the device is known only --after-- address resolution */
 	ib_conn->device = NULL;
 
-	iser_err("connecting to: %pI4, port 0x%x\n",
-		 &dst_addr->sin_addr, dst_addr->sin_port);
+	iser_info("connecting to: %pI4, port 0x%x\n",
+		  &dst_addr->sin_addr, dst_addr->sin_port);
 
 	ib_conn->state = ISER_CONN_PENDING;
 
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index c09d41b1a2f..b08ca7a9f76 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1374,7 +1374,7 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
 		target_put_sess_cmd(ioctx->ch->sess, &ioctx->cmd);
 		break;
 	default:
-		WARN_ON("ERROR: unexpected command state");
+		WARN(1, "Unexpected command state (%d)", state);
 		break;
 	}