Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/g…

…it/roland/infiniband

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (49 commits)
  IB: Set class_dev->dev in core for nice device symlink
  IB/ehca: Implement modify_port
  IB/umad: Clarify documentation of transaction ID
  IPoIB/cm: spin_lock_irqsave() -> spin_lock_irq() replacements
  IB/mad: Change SMI to use enums rather than magic return codes
  IB/umad: Implement GRH handling for sent/received MADs
  IB/ipoib: Use ib_init_ah_from_path to initialize ah_attr
  IB/sa: Set src_path_bits correctly in ib_init_ah_from_path()
  IB/ucm: Simplify ib_ucm_event()
  RDMA/ucma: Simplify ucma_get_event()
  IB/mthca: Simplify CQ cleaning in mthca_free_qp()
  IB/mthca: Fix mthca_write_mtt() on HCAs with hidden memory
  IB/mthca: Update HCA firmware revisions
  IB/ipath: Fix WC format drift between user and kernel space
  IB/ipath: Check that a UD work request's address handle is valid
  IB/ipath: Remove duplicate stuff from ipath_verbs.h
  IB/ipath: Check reserved memory keys
  IB/ipath: Fix unit selection when all CPU affinity bits set
  IB/ipath: Don't allow QPs 0 and 1 to be opened multiple times
  IB/ipath: Disable IB link earlier in shutdown sequence
  ...

Documentation/infiniband/user_mad.txt

@@ -91,6 +91,14 @@ Sending MADs
 	if (ret != sizeof *mad + mad_length)
 		perror("write");
 
+Transaction IDs
+
+  Users of the umad devices can use the lower 32 bits of the
+  transaction ID field (that is, the least significant half of the
+  field in network byte order) in MADs being sent to match
+  request/response pairs.  The upper 32 bits are reserved for use by
+  the kernel and will be overwritten before a MAD is sent.
+
 Setting IsSM Capability Bit
 
   To set the IsSM capability bit for a port, simply open the

drivers/Makefile

@@ -72,7 +72,6 @@ obj-$(CONFIG_CPU_FREQ)		+= cpufreq/
 obj-$(CONFIG_MMC)		+= mmc/
 obj-$(CONFIG_NEW_LEDS)		+= leds/
 obj-$(CONFIG_INFINIBAND)	+= infiniband/
-obj-$(CONFIG_IPATH_CORE)	+= infiniband/
 obj-$(CONFIG_SGI_SN)		+= sn/
 obj-y				+= firmware/
 obj-$(CONFIG_CRYPTO)		+= crypto/

drivers/infiniband/core/mad.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved.
  * Copyright (c) 2005 Intel Corporation.  All rights reserved.
  * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
  *
@@ -31,7 +31,6 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: mad.c 5596 2006-03-03 01:00:07Z sean.hefty $
  */
 #include <linux/dma-mapping.h>
 #include <rdma/ib_cache.h>
@@ -668,7 +667,7 @@ static void build_smp_wc(struct ib_qp *qp,
 static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
 				  struct ib_mad_send_wr_private *mad_send_wr)
 {
-	int ret;
+	int ret = 0;
 	struct ib_smp *smp = mad_send_wr->send_buf.mad;
 	unsigned long flags;
 	struct ib_mad_local_private *local;
@@ -688,14 +687,15 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
 	 */
 	if ((ib_get_smp_direction(smp) ? smp->dr_dlid : smp->dr_slid) ==
 	     IB_LID_PERMISSIVE &&
-	    !smi_handle_dr_smp_send(smp, device->node_type, port_num)) {
+	     smi_handle_dr_smp_send(smp, device->node_type, port_num) ==
+	     IB_SMI_DISCARD) {
 		ret = -EINVAL;
 		printk(KERN_ERR PFX "Invalid directed route\n");
 		goto out;
 	}
+
 	/* Check to post send on QP or process locally */
-	ret = smi_check_local_smp(smp, device);
-	if (!ret)
+	if (smi_check_local_smp(smp, device) == IB_SMI_DISCARD)
 		goto out;
 
 	local = kmalloc(sizeof *local, GFP_ATOMIC);
@@ -1874,18 +1874,22 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
 
 	if (recv->mad.mad.mad_hdr.mgmt_class ==
 	    IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
-		if (!smi_handle_dr_smp_recv(&recv->mad.smp,
-					    port_priv->device->node_type,
-					    port_priv->port_num,
-					    port_priv->device->phys_port_cnt))
+		if (smi_handle_dr_smp_recv(&recv->mad.smp,
+					   port_priv->device->node_type,
+					   port_priv->port_num,
+					   port_priv->device->phys_port_cnt) ==
+					   IB_SMI_DISCARD)
 			goto out;
-		if (!smi_check_forward_dr_smp(&recv->mad.smp))
+
+		if (smi_check_forward_dr_smp(&recv->mad.smp) == IB_SMI_LOCAL)
 			goto local;
-		if (!smi_handle_dr_smp_send(&recv->mad.smp,
-					    port_priv->device->node_type,
-					    port_priv->port_num))
+
+		if (smi_handle_dr_smp_send(&recv->mad.smp,
+					   port_priv->device->node_type,
+					   port_priv->port_num) == IB_SMI_DISCARD)
 			goto out;
-		if (!smi_check_local_smp(&recv->mad.smp, port_priv->device))
+
+		if (smi_check_local_smp(&recv->mad.smp, port_priv->device) == IB_SMI_DISCARD)
 			goto out;
 	}
 

drivers/infiniband/core/sa_query.c

@@ -57,6 +57,7 @@ MODULE_LICENSE("Dual BSD/GPL");
 struct ib_sa_sm_ah {
 	struct ib_ah        *ah;
 	struct kref          ref;
+	u8		     src_path_mask;
 };
 
 struct ib_sa_port {
@@ -380,6 +381,7 @@ static void update_sm_ah(struct work_struct *work)
 	}
 
 	kref_init(&new_ah->ref);
+	new_ah->src_path_mask = (1 << port_attr.lmc) - 1;
 
 	memset(&ah_attr, 0, sizeof ah_attr);
 	ah_attr.dlid     = port_attr.sm_lid;
@@ -460,6 +462,25 @@ void ib_sa_cancel_query(int id, struct ib_sa_query *query)
 }
 EXPORT_SYMBOL(ib_sa_cancel_query);
 
+static u8 get_src_path_mask(struct ib_device *device, u8 port_num)
+{
+	struct ib_sa_device *sa_dev;
+	struct ib_sa_port   *port;
+	unsigned long flags;
+	u8 src_path_mask;
+
+	sa_dev = ib_get_client_data(device, &sa_client);
+	if (!sa_dev)
+		return 0x7f;
+
+	port  = &sa_dev->port[port_num - sa_dev->start_port];
+	spin_lock_irqsave(&port->ah_lock, flags);
+	src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f;
+	spin_unlock_irqrestore(&port->ah_lock, flags);
+
+	return src_path_mask;
+}
+
 int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
 			 struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr)
 {
@@ -469,7 +490,8 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
 	memset(ah_attr, 0, sizeof *ah_attr);
 	ah_attr->dlid = be16_to_cpu(rec->dlid);
 	ah_attr->sl = rec->sl;
-	ah_attr->src_path_bits = be16_to_cpu(rec->slid) & 0x7f;
+	ah_attr->src_path_bits = be16_to_cpu(rec->slid) &
+				 get_src_path_mask(device, port_num);
 	ah_attr->port_num = port_num;
 	ah_attr->static_rate = rec->rate;
 

drivers/infiniband/core/smi.c

@@ -3,7 +3,7 @@
  * Copyright (c) 2004, 2005 Infinicon Corporation.  All rights reserved.
  * Copyright (c) 2004, 2005 Intel Corporation.  All rights reserved.
  * Copyright (c) 2004, 2005 Topspin Corporation.  All rights reserved.
- * Copyright (c) 2004, 2005 Voltaire Corporation.  All rights reserved.
+ * Copyright (c) 2004-2007 Voltaire Corporation.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
@@ -34,7 +34,6 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: smi.c 1389 2004-12-27 22:56:47Z roland $
  */
 
 #include <rdma/ib_smi.h>
@@ -44,9 +43,8 @@
  * Fixup a directed route SMP for sending
  * Return 0 if the SMP should be discarded
  */
-int smi_handle_dr_smp_send(struct ib_smp *smp,
-			   u8 node_type,
-			   int port_num)
+enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
+				       u8 node_type, int port_num)
 {
 	u8 hop_ptr, hop_cnt;
 
@@ -59,75 +57,75 @@ int smi_handle_dr_smp_send(struct ib_smp *smp,
 		if (hop_cnt && hop_ptr == 0) {
 			smp->hop_ptr++;
 			return (smp->initial_path[smp->hop_ptr] ==
-				port_num);
+				port_num ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-9:2 */
 		if (hop_ptr && hop_ptr < hop_cnt) {
 			if (node_type != RDMA_NODE_IB_SWITCH)
-				return 0;
+				return IB_SMI_DISCARD;
 
 			/* smp->return_path set when received */
 			smp->hop_ptr++;
 			return (smp->initial_path[smp->hop_ptr] ==
-				port_num);
+				port_num ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-9:3 -- We're at the end of the DR segment of path */
 		if (hop_ptr == hop_cnt) {
 			/* smp->return_path set when received */
 			smp->hop_ptr++;
 			return (node_type == RDMA_NODE_IB_SWITCH ||
-				smp->dr_dlid == IB_LID_PERMISSIVE);
+				smp->dr_dlid == IB_LID_PERMISSIVE ?
+				IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-9:4 -- hop_ptr = hop_cnt + 1 -> give to SMA/SM */
 		/* C14-9:5 -- Fail unreasonable hop pointer */
-		return (hop_ptr == hop_cnt + 1);
+		return (hop_ptr == hop_cnt + 1 ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 
 	} else {
 		/* C14-13:1 */
 		if (hop_cnt && hop_ptr == hop_cnt + 1) {
 			smp->hop_ptr--;
 			return (smp->return_path[smp->hop_ptr] ==
-				port_num);
+				port_num ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-13:2 */
 		if (2 <= hop_ptr && hop_ptr <= hop_cnt) {
 			if (node_type != RDMA_NODE_IB_SWITCH)
-				return 0;
+				return IB_SMI_DISCARD;
 
 			smp->hop_ptr--;
 			return (smp->return_path[smp->hop_ptr] ==
-				port_num);
+				port_num ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-13:3 -- at the end of the DR segment of path */
 		if (hop_ptr == 1) {
 			smp->hop_ptr--;
 			/* C14-13:3 -- SMPs destined for SM shouldn't be here */
 			return (node_type == RDMA_NODE_IB_SWITCH ||
-				smp->dr_slid == IB_LID_PERMISSIVE);
+				smp->dr_slid == IB_LID_PERMISSIVE ?
+				IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-13:4 -- hop_ptr = 0 -> should have gone to SM */
 		if (hop_ptr == 0)
-			return 1;
+			return IB_SMI_HANDLE;
 
 		/* C14-13:5 -- Check for unreasonable hop pointer */
-		return 0;
+		return IB_SMI_DISCARD;
 	}
 }
 
 /*
  * Adjust information for a received SMP
  * Return 0 if the SMP should be dropped
  */
-int smi_handle_dr_smp_recv(struct ib_smp *smp,
-			   u8 node_type,
-			   int port_num,
-			   int phys_port_cnt)
+enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
+				       int port_num, int phys_port_cnt)
 {
 	u8 hop_ptr, hop_cnt;
 
@@ -138,16 +136,17 @@ int smi_handle_dr_smp_recv(struct ib_smp *smp,
 	if (!ib_get_smp_direction(smp)) {
 		/* C14-9:1 -- sender should have incremented hop_ptr */
 		if (hop_cnt && hop_ptr == 0)
-			return 0;
+			return IB_SMI_DISCARD;
 
 		/* C14-9:2 -- intermediate hop */
 		if (hop_ptr && hop_ptr < hop_cnt) {
 			if (node_type != RDMA_NODE_IB_SWITCH)
-				return 0;
+				return IB_SMI_DISCARD;
 
 			smp->return_path[hop_ptr] = port_num;
 			/* smp->hop_ptr updated when sending */
-			return (smp->initial_path[hop_ptr+1] <= phys_port_cnt);
+			return (smp->initial_path[hop_ptr+1] <= phys_port_cnt ?
+				IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-9:3 -- We're at the end of the DR segment of path */
@@ -157,53 +156,52 @@ int smi_handle_dr_smp_recv(struct ib_smp *smp,
 			/* smp->hop_ptr updated when sending */
 
 			return (node_type == RDMA_NODE_IB_SWITCH ||
-				smp->dr_dlid == IB_LID_PERMISSIVE);
+				smp->dr_dlid == IB_LID_PERMISSIVE ?
+				IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-9:4 -- hop_ptr = hop_cnt + 1 -> give to SMA/SM */
 		/* C14-9:5 -- fail unreasonable hop pointer */
-		return (hop_ptr == hop_cnt + 1);
+		return (hop_ptr == hop_cnt + 1 ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 
 	} else {
 
 		/* C14-13:1 */
 		if (hop_cnt && hop_ptr == hop_cnt + 1) {
 			smp->hop_ptr--;
 			return (smp->return_path[smp->hop_ptr] ==
-				port_num);
+				port_num ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-13:2 */
 		if (2 <= hop_ptr && hop_ptr <= hop_cnt) {
 			if (node_type != RDMA_NODE_IB_SWITCH)
-				return 0;
+				return IB_SMI_DISCARD;
 
 			/* smp->hop_ptr updated when sending */
-			return (smp->return_path[hop_ptr-1] <= phys_port_cnt);
+			return (smp->return_path[hop_ptr-1] <= phys_port_cnt ?
+				IB_SMI_HANDLE : IB_SMI_DISCARD);
 		}
 
 		/* C14-13:3 -- We're at the end of the DR segment of path */
 		if (hop_ptr == 1) {
 			if (smp->dr_slid == IB_LID_PERMISSIVE) {
 				/* giving SMP to SM - update hop_ptr */
 				smp->hop_ptr--;
-				return 1;
+				return IB_SMI_HANDLE;
 			}
 			/* smp->hop_ptr updated when sending */
-			return (node_type == RDMA_NODE_IB_SWITCH);
+			return (node_type == RDMA_NODE_IB_SWITCH ?
+				IB_SMI_HANDLE: IB_SMI_DISCARD);
 		}
 
 		/* C14-13:4 -- hop_ptr = 0 -> give to SM */
 		/* C14-13:5 -- Check for unreasonable hop pointer */
-		return (hop_ptr == 0);
+		return (hop_ptr == 0 ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 	}
 }
 
-/*
- * Return 1 if the received DR SMP should be forwarded to the send queue
- * Return 0 if the SMP should be completed up the stack
- */
-int smi_check_forward_dr_smp(struct ib_smp *smp)
+enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp)
 {
 	u8 hop_ptr, hop_cnt;
 
@@ -213,23 +211,25 @@ int smi_check_forward_dr_smp(struct ib_smp *smp)
 	if (!ib_get_smp_direction(smp)) {
 		/* C14-9:2 -- intermediate hop */
 		if (hop_ptr && hop_ptr < hop_cnt)
-			return 1;
+			return IB_SMI_SEND;
 
 		/* C14-9:3 -- at the end of the DR segment of path */
 		if (hop_ptr == hop_cnt)
-			return (smp->dr_dlid == IB_LID_PERMISSIVE);
+			return (smp->dr_dlid == IB_LID_PERMISSIVE ?
+				IB_SMI_SEND : IB_SMI_LOCAL);
 
 		/* C14-9:4 -- hop_ptr = hop_cnt + 1 -> give to SMA/SM */
 		if (hop_ptr == hop_cnt + 1)
-			return 1;
+			return IB_SMI_SEND;
 	} else {
-		/* C14-13:2 */
+		/* C14-13:2  -- intermediate hop */
 		if (2 <= hop_ptr && hop_ptr <= hop_cnt)
-			return 1;
+			return IB_SMI_SEND;
 
 		/* C14-13:3 -- at the end of the DR segment of path */
 		if (hop_ptr == 1)
-			return (smp->dr_slid != IB_LID_PERMISSIVE);
+			return (smp->dr_slid != IB_LID_PERMISSIVE ?
+				IB_SMI_SEND : IB_SMI_LOCAL);
 	}
-	return 0;
+	return IB_SMI_LOCAL;
 }