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

…el/git/roland/infiniband

Pull infiniband changes from Roland Dreier:
  "Second batch of changes for the 3.7 merge window:
   - Late-breaking fix for IPoIB on mlx4 SR-IOV VFs.
   - Fix for IPoIB build breakage with CONFIG_INFINIBAND_IPOIB_CM=n (new
     netlink config changes are to blame).
   - Make sure retry count values are in range in RDMA CM.
   - A few nes hardware driver fixes and cleanups.
   - Have iSER initiator use >1 interrupt vectors if available."

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/cma: Check that retry count values are in range
  IB/iser: Add more RX CQs to scale out processing of SCSI responses
  RDMA/nes: Bump the version number of nes driver
  RDMA/nes: Remove unused module parameter "send_first"
  RDMA/nes: Remove unnecessary if-else statement
  RDMA/nes: Add missing break to switch.
  mlx4_core: Adjust flow steering attach wrapper so that IB works on SR-IOV VFs
  IPoIB: Fix build with CONFIG_INFINIBAND_IPOIB_CM=n

drivers/infiniband/core/cma.c

@@ -2648,8 +2648,8 @@ static int cma_connect_ib(struct rdma_id_private *id_priv,
 	req.responder_resources = conn_param->responder_resources;
 	req.initiator_depth = conn_param->initiator_depth;
 	req.flow_control = conn_param->flow_control;
-	req.retry_count = conn_param->retry_count;
-	req.rnr_retry_count = conn_param->rnr_retry_count;
+	req.retry_count = min_t(u8, 7, conn_param->retry_count);
+	req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count);
 	req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT;
 	req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT;
 	req.max_cm_retries = CMA_MAX_CM_RETRIES;
@@ -2770,7 +2770,7 @@ static int cma_accept_ib(struct rdma_id_private *id_priv,
 	rep.initiator_depth = conn_param->initiator_depth;
 	rep.failover_accepted = 0;
 	rep.flow_control = conn_param->flow_control;
-	rep.rnr_retry_count = conn_param->rnr_retry_count;
+	rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count);
 	rep.srq = id_priv->srq ? 1 : 0;
 
 	ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep);

drivers/infiniband/hw/nes/nes.c

@@ -79,11 +79,6 @@ int disable_mpa_crc = 0;
 module_param(disable_mpa_crc, int, 0644);
 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
 
-unsigned int send_first = 0;
-module_param(send_first, int, 0644);
-MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
-
-
 unsigned int nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
 module_param(nes_drv_opt, int, 0644);
 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");

drivers/infiniband/hw/nes/nes.h

@@ -57,7 +57,7 @@
 #define QUEUE_DISCONNECTS
 
 #define DRV_NAME    "iw_nes"
-#define DRV_VERSION "1.5.0.0"
+#define DRV_VERSION "1.5.0.1"
 #define PFX         DRV_NAME ": "
 
 /*
@@ -172,7 +172,6 @@ extern int interrupt_mod_interval;
 extern int nes_if_count;
 extern int mpa_version;
 extern int disable_mpa_crc;
-extern unsigned int send_first;
 extern unsigned int nes_drv_opt;
 extern unsigned int nes_debug_level;
 extern unsigned int wqm_quanta;

drivers/infiniband/hw/nes/nes_verbs.c

@@ -3006,6 +3006,7 @@ int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 					switch (nesqp->hw_iwarp_state) {
 						case NES_AEQE_IWARP_STATE_CLOSING:
 							next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
+							break;
 						case NES_AEQE_IWARP_STATE_TERMINATE:
 							next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
 							break;
@@ -3068,18 +3069,9 @@ int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 		}
 
 		nesqp->ibqp_state = attr->qp_state;
-		if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
-				(u32)NES_CQP_QP_IWARP_STATE_RTS) &&
-				((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
-				(u32)NES_CQP_QP_IWARP_STATE_RTS)) {
-			nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
-			nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
-					nesqp->iwarp_state);
-		} else {
-			nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
-			nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
-					nesqp->iwarp_state);
-		}
+		nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
+		nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
+				nesqp->iwarp_state);
 	}
 
 	if (attr_mask & IB_QP_ACCESS_FLAGS) {

drivers/infiniband/ulp/ipoib/ipoib.h

@@ -535,14 +535,14 @@ void ipoib_drain_cq(struct net_device *dev);
 void ipoib_set_ethtool_ops(struct net_device *dev);
 int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
 
-#ifdef CONFIG_INFINIBAND_IPOIB_CM
-
 #define IPOIB_FLAGS_RC		0x80
 #define IPOIB_FLAGS_UC		0x40
 
 /* We don't support UC connections at the moment */
 #define IPOIB_CM_SUPPORTED(ha)   (ha[0] & (IPOIB_FLAGS_RC))
 
+#ifdef CONFIG_INFINIBAND_IPOIB_CM
+
 extern int ipoib_max_conn_qp;
 
 static inline int ipoib_cm_admin_enabled(struct net_device *dev)

drivers/infiniband/ulp/ipoib/ipoib_cm.c

@@ -1448,37 +1448,6 @@ static ssize_t show_mode(struct device *d, struct device_attribute *attr,
 		return sprintf(buf, "datagram\n");
 }
 
-int ipoib_set_mode(struct net_device *dev, const char *buf)
-{
-	struct ipoib_dev_priv *priv = netdev_priv(dev);
-
-	/* flush paths if we switch modes so that connections are restarted */
-	if (IPOIB_CM_SUPPORTED(dev->dev_addr) && !strcmp(buf, "connected\n")) {
-		set_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
-		ipoib_warn(priv, "enabling connected mode "
-			   "will cause multicast packet drops\n");
-		netdev_update_features(dev);
-		rtnl_unlock();
-		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;
-
-		ipoib_flush_paths(dev);
-		rtnl_lock();
-		return 0;
-	}
-
-	if (!strcmp(buf, "datagram\n")) {
-		clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
-		netdev_update_features(dev);
-		dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu));
-		rtnl_unlock();
-		ipoib_flush_paths(dev);
-		rtnl_lock();
-		return 0;
-	}
-
-	return -EINVAL;
-}
-
 static ssize_t set_mode(struct device *d, struct device_attribute *attr,
 			const char *buf, size_t count)
 {

drivers/infiniband/ulp/ipoib/ipoib_main.c

@@ -215,6 +215,37 @@ static int ipoib_change_mtu(struct net_device *dev, int new_mtu)
 	return 0;
 }
 
+int ipoib_set_mode(struct net_device *dev, const char *buf)
+{
+	struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+	/* flush paths if we switch modes so that connections are restarted */
+	if (IPOIB_CM_SUPPORTED(dev->dev_addr) && !strcmp(buf, "connected\n")) {
+		set_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
+		ipoib_warn(priv, "enabling connected mode "
+			   "will cause multicast packet drops\n");
+		netdev_update_features(dev);
+		rtnl_unlock();
+		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;
+
+		ipoib_flush_paths(dev);
+		rtnl_lock();
+		return 0;
+	}
+
+	if (!strcmp(buf, "datagram\n")) {
+		clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
+		netdev_update_features(dev);
+		dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu));
+		rtnl_unlock();
+		ipoib_flush_paths(dev);
+		rtnl_lock();
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 static struct ipoib_path *__path_find(struct net_device *dev, void *gid)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);

drivers/infiniband/ulp/iser/iscsi_iser.h

@@ -177,6 +177,7 @@ struct iser_data_buf {
 
 /* fwd declarations */
 struct iser_device;
+struct iser_cq_desc;
 struct iscsi_iser_conn;
 struct iscsi_iser_task;
 struct iscsi_endpoint;
@@ -226,16 +227,21 @@ struct iser_rx_desc {
 	char		             pad[ISER_RX_PAD_SIZE];
 } __attribute__((packed));
 
+#define ISER_MAX_CQ 4
+
 struct iser_device {
 	struct ib_device             *ib_device;
 	struct ib_pd	             *pd;
-	struct ib_cq	             *rx_cq;
-	struct ib_cq	             *tx_cq;
+	struct ib_cq	             *rx_cq[ISER_MAX_CQ];
+	struct ib_cq	             *tx_cq[ISER_MAX_CQ];
 	struct ib_mr	             *mr;
-	struct tasklet_struct	     cq_tasklet;
+	struct tasklet_struct	     cq_tasklet[ISER_MAX_CQ];
 	struct ib_event_handler      event_handler;
 	struct list_head             ig_list; /* entry in ig devices list */
 	int                          refcount;
+	int                          cq_active_qps[ISER_MAX_CQ];
+	int			     cqs_used;
+	struct iser_cq_desc	     *cq_desc;
 };
 
 struct iser_conn {
@@ -287,6 +293,11 @@ struct iser_page_vec {
 	int data_size;
 };
 
+struct iser_cq_desc {
+	struct iser_device           *device;
+	int                          cq_index;
+};
+
 struct iser_global {
 	struct mutex      device_list_mutex;/*                   */
 	struct list_head  device_list;	     /* all iSER devices */