[PATCH rdma-next V3 0/6] Refactor RDMA IOCTL declarations

[PATCH rdma-next V3 0/6] Refactor RDMA IOCTL declarations

[Leon Romanovsky]

Hi Doug,

This patch set refactors RDMA IOCTL declarations, unifies their
location, moves all current IOCTL exporters to one place and renames
them to fix the differences in coding style.

IOCTLs commands need to export the size of their data for their transfer
which is usually declared as a struct defined in relevant submodule.
These structures should be visible at the linkage stage.

There are number of possible solutions to overcome this limitations.

One of the options is to declare anonymous variable which will be visible
during the linkage. As a downside, such option won't allow direct use of
this header by other parts of code without their specific includes of
other logically unrelated submodules.

Another possible option will be to move declarations of that structures
to that common header file. Such move will cause to bloat this file
with different submodules declarations.

Our decision was to choose direct include of other exported files with
declarations of such structures to simplify future usage of this file.
There is no change for legacy applications and libraries.

Changes v2->v3:
 * Added Jason's Reviewed-by
 * Open-ceded ioctl indexes

Changes v0->v2 (v1 was skipped):
 * Update commit messages of patch number 3 and 6.

Available in the "topic/ioctl-header" topic branch of this git repo:
git://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git

Or for browsing:
https://git.kernel.org/cgit/linux/kernel/git/leon/linux-rdma.git/log/?h=topic/ioctl-header

Thanks

Leon Romanovsky (6):
  RDMA/core: Commonize RDMA IOCTL declarations location
  RDMA/core: Move legacy MAD IOCTL declarations to common file
  RDMA/hfi1: Avoid redeclaration error
  RDMA/core: Move HFI1 IOCTL declarations to common file
  RDMA/core: Rename RDMA magic number
  RDMA/core: Unify style of IOCTL commands

 include/uapi/rdma/Kbuild            |   1 +
 include/uapi/rdma/hfi/Kbuild        |   1 +
 include/uapi/rdma/hfi/hfi1_ioctl.h  | 173 +++++++++++++++++++++++++++++++++++
 include/uapi/rdma/hfi/hfi1_user.h   | 175 +-----------------------------------
 include/uapi/rdma/ib_user_mad.h     |  14 +--
 include/uapi/rdma/rdma_user_ioctl.h |  87 ++++++++++++++++++
 6 files changed, 264 insertions(+), 187 deletions(-)
 create mode 100644 include/uapi/rdma/hfi/hfi1_ioctl.h
 create mode 100644 include/uapi/rdma/rdma_user_ioctl.h

--
2.7.4

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[PATCH rdma-next V3 1/6] RDMA/core: Commonize RDMA IOCTL declarations location

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

This patch provides one common file (rdma_user_ioctl.h)
for all RDMA UAPI IOCTLs.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/Kbuild            |  1 +
 include/uapi/rdma/hfi/hfi1_user.h   |  2 +-
 include/uapi/rdma/ib_user_mad.h     |  4 +---
 include/uapi/rdma/rdma_user_ioctl.h | 43 +++++++++++++++++++++++++++++++++++++
 4 files changed, 46 insertions(+), 4 deletions(-)
 create mode 100644 include/uapi/rdma/rdma_user_ioctl.h

diff --git a/include/uapi/rdma/Kbuild b/include/uapi/rdma/Kbuild
index 4edb0f2..ac62908 100644
--- a/include/uapi/rdma/Kbuild
+++ b/include/uapi/rdma/Kbuild
@@ -1,5 +1,6 @@
 # UAPI Header export list
 header-y += ib_user_cm.h
+header-y += rdma_user_ioctl.h
 header-y += ib_user_mad.h
 header-y += ib_user_sa.h
 header-y += ib_user_verbs.h
diff --git a/include/uapi/rdma/hfi/hfi1_user.h b/include/uapi/rdma/hfi/hfi1_user.h
index d15e728..a404919 100644
--- a/include/uapi/rdma/hfi/hfi1_user.h
+++ b/include/uapi/rdma/hfi/hfi1_user.h
@@ -57,6 +57,7 @@
 #define _LINUX__HFI1_USER_H

 #include <linux/types.h>
+#include <rdma/rdma_user_ioctl.h>

 /*
  * This version number is given to the driver by the user code during
@@ -132,7 +133,6 @@
  * User IOCTLs can not go above 128 if they do then see common.h and change the
  * base for the snoop ioctl
  */
-#define IB_IOCTL_MAGIC 0x1b /* See Documentation/ioctl/ioctl-number.txt */

 /*
  * Make the ioctls occupy the last 0xf0-0xff portion of the IB range
diff --git a/include/uapi/rdma/ib_user_mad.h b/include/uapi/rdma/ib_user_mad.h
index 09f809f..9de7a2b 100644
--- a/include/uapi/rdma/ib_user_mad.h
+++ b/include/uapi/rdma/ib_user_mad.h
@@ -35,7 +35,7 @@
 #define IB_USER_MAD_H

 #include <linux/types.h>
-#include <linux/ioctl.h>
+#include <rdma/rdma_user_ioctl.h>

 /*
  * Increment this value if any changes that break userspace ABI
@@ -230,8 +230,6 @@ struct ib_user_mad_reg_req2 {
 	__u8	reserved[3];
 };

-#define IB_IOCTL_MAGIC		0x1b
-
 #define IB_USER_MAD_REGISTER_AGENT	_IOWR(IB_IOCTL_MAGIC, 1, \
 					      struct ib_user_mad_reg_req)

diff --git a/include/uapi/rdma/rdma_user_ioctl.h b/include/uapi/rdma/rdma_user_ioctl.h
new file mode 100644
index 0000000..ba1bcdd
--- /dev/null
+++ b/include/uapi/rdma/rdma_user_ioctl.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2016 Mellanox Technologies, LTD. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RDMA_USER_IOCTL_H
+#define RDMA_USER_IOCTL_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/* Documentation/ioctl/ioctl-number.txt */
+#define RDMA_IOCTL_MAGIC		0x1b
+#define IB_IOCTL_MAGIC			RDMA_IOCTL_MAGIC
+
+#endif /* RDMA_USER_IOCTL_H */
--
2.7.4

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[PATCH rdma-next V3 2/6] RDMA/core: Move legacy MAD IOCTL declarations to common file

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Move legacy MAD IOCTL declarations to rdma_user_ioctl.h file.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/ib_user_mad.h     | 10 ----------
 include/uapi/rdma/rdma_user_ioctl.h | 11 +++++++++++
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/include/uapi/rdma/ib_user_mad.h b/include/uapi/rdma/ib_user_mad.h
index 9de7a2b..5c7abd8 100644
--- a/include/uapi/rdma/ib_user_mad.h
+++ b/include/uapi/rdma/ib_user_mad.h
@@ -230,14 +230,4 @@ struct ib_user_mad_reg_req2 {
 	__u8	reserved[3];
 };

-#define IB_USER_MAD_REGISTER_AGENT	_IOWR(IB_IOCTL_MAGIC, 1, \
-					      struct ib_user_mad_reg_req)
-
-#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(IB_IOCTL_MAGIC, 2, __u32)
-
-#define IB_USER_MAD_ENABLE_PKEY		_IO(IB_IOCTL_MAGIC, 3)
-
-#define IB_USER_MAD_REGISTER_AGENT2     _IOWR(IB_IOCTL_MAGIC, 4, \
-					      struct ib_user_mad_reg_req2)
-
 #endif /* IB_USER_MAD_H */
diff --git a/include/uapi/rdma/rdma_user_ioctl.h b/include/uapi/rdma/rdma_user_ioctl.h
index ba1bcdd..820bf34 100644
--- a/include/uapi/rdma/rdma_user_ioctl.h
+++ b/include/uapi/rdma/rdma_user_ioctl.h
@@ -35,9 +35,20 @@

 #include <linux/types.h>
 #include <linux/ioctl.h>
+#include <rdma/ib_user_mad.h>

 /* Documentation/ioctl/ioctl-number.txt */
 #define RDMA_IOCTL_MAGIC		0x1b
 #define IB_IOCTL_MAGIC			RDMA_IOCTL_MAGIC

+#define IB_USER_MAD_REGISTER_AGENT	_IOWR(IB_IOCTL_MAGIC, 1, \
+					      struct ib_user_mad_reg_req)
+
+#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(IB_IOCTL_MAGIC, 2, __u32)
+
+#define IB_USER_MAD_ENABLE_PKEY		_IO(IB_IOCTL_MAGIC, 3)
+
+#define IB_USER_MAD_REGISTER_AGENT2     _IOWR(IB_IOCTL_MAGIC, 4, \
+					      struct ib_user_mad_reg_req2)
+
 #endif /* RDMA_USER_IOCTL_H */
--
2.7.4

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[PATCH rdma-next V3 3/6] RDMA/hfi1: Avoid redeclaration error

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Move hfi1 ioctl definitions to a new header which can be included by
both the hfi1 and qib drivers to avoid a duplicate enum definition
as shown in this build error for qib:

  CC [M] drivers/infiniband/hw/qib/qib_sysfs.o
In file included from ./include/uapi/rdma/rdma_user_ioctl.h:39:0,
		 from include/uapi/rdma/ib_user_mad.h:38,
		 from include/rdma/ib_mad.h:43,
		 from include/rdma/ib_pma.h:38,
		 from drivers/infiniband/hw/qib/qib_mad.h:37,
		 from drivers/infiniband/hw/qib/qib_init.c:49:
./include/uapi/rdma/hfi/hfi1_user.h:370:2: error: redeclaration of
enumerator ‘ur_rcvhdrtail’
  ur_rcvhdrtail = 0,

Move hfi1 structures to separate file to avoid this failure.

The actual move of the ioctl definitions comes in a follow on patch.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/hfi/Kbuild       |   1 +
 include/uapi/rdma/hfi/hfi1_ioctl.h | 173 +++++++++++++++++++++++++++++++++++++
 include/uapi/rdma/hfi/hfi1_user.h  | 120 +------------------------
 3 files changed, 175 insertions(+), 119 deletions(-)
 create mode 100644 include/uapi/rdma/hfi/hfi1_ioctl.h

diff --git a/include/uapi/rdma/hfi/Kbuild b/include/uapi/rdma/hfi/Kbuild
index ef23c29..b65b0b3 100644
--- a/include/uapi/rdma/hfi/Kbuild
+++ b/include/uapi/rdma/hfi/Kbuild
@@ -1,2 +1,3 @@
 # UAPI Header export list
 header-y += hfi1_user.h
+header-y += hfi1_ioctl.h
diff --git a/include/uapi/rdma/hfi/hfi1_ioctl.h b/include/uapi/rdma/hfi/hfi1_ioctl.h
new file mode 100644
index 0000000..4791cc8
--- /dev/null
+++ b/include/uapi/rdma/hfi/hfi1_ioctl.h
@@ -0,0 +1,173 @@
+/*
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  - Neither the name of Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _LINUX__HFI1_IOCTL_H
+#define _LINUX__HFI1_IOCTL_H
+#include <linux/types.h>
+
+/*
+ * This structure is passed to the driver to tell it where
+ * user code buffers are, sizes, etc.   The offsets and sizes of the
+ * fields must remain unchanged, for binary compatibility.  It can
+ * be extended, if userversion is changed so user code can tell, if needed
+ */
+struct hfi1_user_info {
+	/*
+	 * version of user software, to detect compatibility issues.
+	 * Should be set to HFI1_USER_SWVERSION.
+	 */
+	__u32 userversion;
+	__u32 pad;
+	/*
+	 * If two or more processes wish to share a context, each process
+	 * must set the subcontext_cnt and subcontext_id to the same
+	 * values.  The only restriction on the subcontext_id is that
+	 * it be unique for a given node.
+	 */
+	__u16 subctxt_cnt;
+	__u16 subctxt_id;
+	/* 128bit UUID passed in by PSM. */
+	__u8 uuid[16];
+};
+
+struct hfi1_ctxt_info {
+	__u64 runtime_flags;    /* chip/drv runtime flags (HFI1_CAP_*) */
+	__u32 rcvegr_size;      /* size of each eager buffer */
+	__u16 num_active;       /* number of active units */
+	__u16 unit;             /* unit (chip) assigned to caller */
+	__u16 ctxt;             /* ctxt on unit assigned to caller */
+	__u16 subctxt;          /* subctxt on unit assigned to caller */
+	__u16 rcvtids;          /* number of Rcv TIDs for this context */
+	__u16 credits;          /* number of PIO credits for this context */
+	__u16 numa_node;        /* NUMA node of the assigned device */
+	__u16 rec_cpu;          /* cpu # for affinity (0xffff if none) */
+	__u16 send_ctxt;        /* send context in use by this user context */
+	__u16 egrtids;          /* number of RcvArray entries for Eager Rcvs */
+	__u16 rcvhdrq_cnt;      /* number of RcvHdrQ entries */
+	__u16 rcvhdrq_entsize;  /* size (in bytes) for each RcvHdrQ entry */
+	__u16 sdma_ring_size;   /* number of entries in SDMA request ring */
+};
+
+struct hfi1_tid_info {
+	/* virtual address of first page in transfer */
+	__u64 vaddr;
+	/* pointer to tid array. this array is big enough */
+	__u64 tidlist;
+	/* number of tids programmed by this request */
+	__u32 tidcnt;
+	/* length of transfer buffer programmed by this request */
+	__u32 length;
+};
+
+/*
+ * This structure is returned by the driver immediately after
+ * open to get implementation-specific info, and info specific to this
+ * instance.
+ *
+ * This struct must have explicit pad fields where type sizes
+ * may result in different alignments between 32 and 64 bit
+ * programs, since the 64 bit * bit kernel requires the user code
+ * to have matching offsets
+ */
+struct hfi1_base_info {
+	/* version of hardware, for feature checking. */
+	__u32 hw_version;
+	/* version of software, for feature checking. */
+	__u32 sw_version;
+	/* Job key */
+	__u16 jkey;
+	__u16 padding1;
+	/*
+	 * The special QP (queue pair) value that identifies PSM
+	 * protocol packet from standard IB packets.
+	 */
+	__u32 bthqp;
+	/* PIO credit return address, */
+	__u64 sc_credits_addr;
+	/*
+	 * Base address of write-only pio buffers for this process.
+	 * Each buffer has sendpio_credits*64 bytes.
+	 */
+	__u64 pio_bufbase_sop;
+	/*
+	 * Base address of write-only pio buffers for this process.
+	 * Each buffer has sendpio_credits*64 bytes.
+	 */
+	__u64 pio_bufbase;
+	/* address where receive buffer queue is mapped into */
+	__u64 rcvhdr_bufbase;
+	/* base address of Eager receive buffers. */
+	__u64 rcvegr_bufbase;
+	/* base address of SDMA completion ring */
+	__u64 sdma_comp_bufbase;
+	/*
+	 * User register base for init code, not to be used directly by
+	 * protocol or applications.  Always maps real chip register space.
+	 * the register addresses are:
+	 * ur_rcvhdrhead, ur_rcvhdrtail, ur_rcvegrhead, ur_rcvegrtail,
+	 * ur_rcvtidflow
+	 */
+	__u64 user_regbase;
+	/* notification events */
+	__u64 events_bufbase;
+	/* status page */
+	__u64 status_bufbase;
+	/* rcvhdrtail update */
+	__u64 rcvhdrtail_base;
+	/*
+	 * shared memory pages for subctxts if ctxt is shared; these cover
+	 * all the processes in the group sharing a single context.
+	 * all have enough space for the num_subcontexts value on this job.
+	 */
+	__u64 subctxt_uregbase;
+	__u64 subctxt_rcvegrbuf;
+	__u64 subctxt_rcvhdrbuf;
+};
+#endif /* _LINIUX__HFI1_IOCTL_H */
diff --git a/include/uapi/rdma/hfi/hfi1_user.h b/include/uapi/rdma/hfi/hfi1_user.h
index a404919..8aa3867 100644
--- a/include/uapi/rdma/hfi/hfi1_user.h
+++ b/include/uapi/rdma/hfi/hfi1_user.h
@@ -58,6 +58,7 @@

 #include <linux/types.h>
 #include <rdma/rdma_user_ioctl.h>
+#include <rdma/hfi/hfi1_ioctl.h>

 /*
  * This version number is given to the driver by the user code during
@@ -211,60 +212,6 @@ struct hfi1_cmd;
 #define HFI1_POLL_TYPE_ANYRCV     0x0
 #define HFI1_POLL_TYPE_URGENT     0x1

-/*
- * This structure is passed to the driver to tell it where
- * user code buffers are, sizes, etc.   The offsets and sizes of the
- * fields must remain unchanged, for binary compatibility.  It can
- * be extended, if userversion is changed so user code can tell, if needed
- */
-struct hfi1_user_info {
-	/*
-	 * version of user software, to detect compatibility issues.
-	 * Should be set to HFI1_USER_SWVERSION.
-	 */
-	__u32 userversion;
-	__u32 pad;
-	/*
-	 * If two or more processes wish to share a context, each process
-	 * must set the subcontext_cnt and subcontext_id to the same
-	 * values.  The only restriction on the subcontext_id is that
-	 * it be unique for a given node.
-	 */
-	__u16 subctxt_cnt;
-	__u16 subctxt_id;
-	/* 128bit UUID passed in by PSM. */
-	__u8 uuid[16];
-};
-
-struct hfi1_ctxt_info {
-	__u64 runtime_flags;    /* chip/drv runtime flags (HFI1_CAP_*) */
-	__u32 rcvegr_size;      /* size of each eager buffer */
-	__u16 num_active;       /* number of active units */
-	__u16 unit;             /* unit (chip) assigned to caller */
-	__u16 ctxt;             /* ctxt on unit assigned to caller */
-	__u16 subctxt;          /* subctxt on unit assigned to caller */
-	__u16 rcvtids;          /* number of Rcv TIDs for this context */
-	__u16 credits;          /* number of PIO credits for this context */
-	__u16 numa_node;        /* NUMA node of the assigned device */
-	__u16 rec_cpu;          /* cpu # for affinity (0xffff if none) */
-	__u16 send_ctxt;        /* send context in use by this user context */
-	__u16 egrtids;          /* number of RcvArray entries for Eager Rcvs */
-	__u16 rcvhdrq_cnt;      /* number of RcvHdrQ entries */
-	__u16 rcvhdrq_entsize;  /* size (in bytes) for each RcvHdrQ entry */
-	__u16 sdma_ring_size;   /* number of entries in SDMA request ring */
-};
-
-struct hfi1_tid_info {
-	/* virtual address of first page in transfer */
-	__u64 vaddr;
-	/* pointer to tid array. this array is big enough */
-	__u64 tidlist;
-	/* number of tids programmed by this request */
-	__u32 tidcnt;
-	/* length of transfer buffer programmed by this request */
-	__u32 length;
-};
-
 enum hfi1_sdma_comp_state {
 	FREE = 0,
 	QUEUED,
@@ -289,71 +236,6 @@ struct hfi1_status {
 	char freezemsg[0];
 };

-/*
- * This structure is returned by the driver immediately after
- * open to get implementation-specific info, and info specific to this
- * instance.
- *
- * This struct must have explicit pad fields where type sizes
- * may result in different alignments between 32 and 64 bit
- * programs, since the 64 bit * bit kernel requires the user code
- * to have matching offsets
- */
-struct hfi1_base_info {
-	/* version of hardware, for feature checking. */
-	__u32 hw_version;
-	/* version of software, for feature checking. */
-	__u32 sw_version;
-	/* Job key */
-	__u16 jkey;
-	__u16 padding1;
-	/*
-	 * The special QP (queue pair) value that identifies PSM
-	 * protocol packet from standard IB packets.
-	 */
-	__u32 bthqp;
-	/* PIO credit return address, */
-	__u64 sc_credits_addr;
-	/*
-	 * Base address of write-only pio buffers for this process.
-	 * Each buffer has sendpio_credits*64 bytes.
-	 */
-	__u64 pio_bufbase_sop;
-	/*
-	 * Base address of write-only pio buffers for this process.
-	 * Each buffer has sendpio_credits*64 bytes.
-	 */
-	__u64 pio_bufbase;
-	/* address where receive buffer queue is mapped into */
-	__u64 rcvhdr_bufbase;
-	/* base address of Eager receive buffers. */
-	__u64 rcvegr_bufbase;
-	/* base address of SDMA completion ring */
-	__u64 sdma_comp_bufbase;
-	/*
-	 * User register base for init code, not to be used directly by
-	 * protocol or applications.  Always maps real chip register space.
-	 * the register addresses are:
-	 * ur_rcvhdrhead, ur_rcvhdrtail, ur_rcvegrhead, ur_rcvegrtail,
-	 * ur_rcvtidflow
-	 */
-	__u64 user_regbase;
-	/* notification events */
-	__u64 events_bufbase;
-	/* status page */
-	__u64 status_bufbase;
-	/* rcvhdrtail update */
-	__u64 rcvhdrtail_base;
-	/*
-	 * shared memory pages for subctxts if ctxt is shared; these cover
-	 * all the processes in the group sharing a single context.
-	 * all have enough space for the num_subcontexts value on this job.
-	 */
-	__u64 subctxt_uregbase;
-	__u64 subctxt_rcvegrbuf;
-	__u64 subctxt_rcvhdrbuf;
-};
-
 enum sdma_req_opcode {
 	EXPECTED = 0,
 	EAGER
--
2.7.4

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[PATCH rdma-next V3 4/6] RDMA/core: Move HFI1 IOCTL declarations to common file

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Move HFI1 IOCTL declarations to rdma_user_ioctl.h file.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/hfi/hfi1_user.h   | 55 -------------------------------------
 include/uapi/rdma/rdma_user_ioctl.h | 54 ++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 55 deletions(-)

diff --git a/include/uapi/rdma/hfi/hfi1_user.h b/include/uapi/rdma/hfi/hfi1_user.h
index 8aa3867..8807f06 100644
--- a/include/uapi/rdma/hfi/hfi1_user.h
+++ b/include/uapi/rdma/hfi/hfi1_user.h
@@ -58,7 +58,6 @@

 #include <linux/types.h>
 #include <rdma/rdma_user_ioctl.h>
-#include <rdma/hfi/hfi1_ioctl.h>

 /*
  * This version number is given to the driver by the user code during
@@ -114,60 +113,6 @@
 #define HFI1_RCVHDR_ENTSIZE_16   (1UL << 1)
 #define HFI1_RCVDHR_ENTSIZE_32   (1UL << 2)

-/* User commands. */
-#define HFI1_CMD_ASSIGN_CTXT     1	/* allocate HFI and context */
-#define HFI1_CMD_CTXT_INFO       2	/* find out what resources we got */
-#define HFI1_CMD_USER_INFO       3	/* set up userspace */
-#define HFI1_CMD_TID_UPDATE      4	/* update expected TID entries */
-#define HFI1_CMD_TID_FREE        5	/* free expected TID entries */
-#define HFI1_CMD_CREDIT_UPD      6	/* force an update of PIO credit */
-
-#define HFI1_CMD_RECV_CTRL       8	/* control receipt of packets */
-#define HFI1_CMD_POLL_TYPE       9	/* set the kind of polling we want */
-#define HFI1_CMD_ACK_EVENT       10	/* ack & clear user status bits */
-#define HFI1_CMD_SET_PKEY        11     /* set context's pkey */
-#define HFI1_CMD_CTXT_RESET      12     /* reset context's HW send context */
-#define HFI1_CMD_TID_INVAL_READ  13     /* read TID cache invalidations */
-#define HFI1_CMD_GET_VERS	 14	/* get the version of the user cdev */
-
-/*
- * User IOCTLs can not go above 128 if they do then see common.h and change the
- * base for the snoop ioctl
- */
-
-/*
- * Make the ioctls occupy the last 0xf0-0xff portion of the IB range
- */
-#define __NUM(cmd) (HFI1_CMD_##cmd + 0xe0)
-
-struct hfi1_cmd;
-#define HFI1_IOCTL_ASSIGN_CTXT \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
-#define HFI1_IOCTL_CTXT_INFO \
-	_IOW(IB_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
-#define HFI1_IOCTL_USER_INFO \
-	_IOW(IB_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
-#define HFI1_IOCTL_TID_UPDATE \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
-#define HFI1_IOCTL_TID_FREE \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
-#define HFI1_IOCTL_CREDIT_UPD \
-	_IO(IB_IOCTL_MAGIC, __NUM(CREDIT_UPD))
-#define HFI1_IOCTL_RECV_CTRL \
-	_IOW(IB_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
-#define HFI1_IOCTL_POLL_TYPE \
-	_IOW(IB_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
-#define HFI1_IOCTL_ACK_EVENT \
-	_IOW(IB_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
-#define HFI1_IOCTL_SET_PKEY \
-	_IOW(IB_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
-#define HFI1_IOCTL_CTXT_RESET \
-	_IO(IB_IOCTL_MAGIC, __NUM(CTXT_RESET))
-#define HFI1_IOCTL_TID_INVAL_READ \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
-#define HFI1_IOCTL_GET_VERS \
-	_IOR(IB_IOCTL_MAGIC, __NUM(GET_VERS), int)
-
 #define _HFI1_EVENT_FROZEN_BIT         0
 #define _HFI1_EVENT_LINKDOWN_BIT       1
 #define _HFI1_EVENT_LID_CHANGE_BIT     2
diff --git a/include/uapi/rdma/rdma_user_ioctl.h b/include/uapi/rdma/rdma_user_ioctl.h
index 820bf34..e9a69f0 100644
--- a/include/uapi/rdma/rdma_user_ioctl.h
+++ b/include/uapi/rdma/rdma_user_ioctl.h
@@ -36,6 +36,7 @@
 #include <linux/types.h>
 #include <linux/ioctl.h>
 #include <rdma/ib_user_mad.h>
+#include <rdma/hfi/hfi1_ioctl.h>

 /* Documentation/ioctl/ioctl-number.txt */
 #define RDMA_IOCTL_MAGIC		0x1b
@@ -51,4 +52,57 @@
 #define IB_USER_MAD_REGISTER_AGENT2     _IOWR(IB_IOCTL_MAGIC, 4, \
 					      struct ib_user_mad_reg_req2)

+/* User commands. */
+#define HFI1_CMD_ASSIGN_CTXT     1	/* allocate HFI and context */
+#define HFI1_CMD_CTXT_INFO       2	/* find out what resources we got */
+#define HFI1_CMD_USER_INFO       3	/* set up userspace */
+#define HFI1_CMD_TID_UPDATE      4	/* update expected TID entries */
+#define HFI1_CMD_TID_FREE        5	/* free expected TID entries */
+#define HFI1_CMD_CREDIT_UPD      6	/* force an update of PIO credit */
+
+#define HFI1_CMD_RECV_CTRL       8	/* control receipt of packets */
+#define HFI1_CMD_POLL_TYPE       9	/* set the kind of polling we want */
+#define HFI1_CMD_ACK_EVENT       10	/* ack & clear user status bits */
+#define HFI1_CMD_SET_PKEY        11     /* set context's pkey */
+#define HFI1_CMD_CTXT_RESET      12     /* reset context's HW send context */
+#define HFI1_CMD_TID_INVAL_READ  13     /* read TID cache invalidations */
+#define HFI1_CMD_GET_VERS	 14	/* get the version of the user cdev */
+
+/*
+ * User IOCTLs can not go above 128 if they do then see common.h and change the
+ * base for the snoop ioctl
+ */
+
+/*
+ * Make the ioctls occupy the last 0xf0-0xff portion of the IB range
+ */
+#define __NUM(cmd) (HFI1_CMD_##cmd + 0xe0)
+
+#define HFI1_IOCTL_ASSIGN_CTXT \
+	_IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
+#define HFI1_IOCTL_CTXT_INFO \
+	_IOW(IB_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
+#define HFI1_IOCTL_USER_INFO \
+	_IOW(IB_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
+#define HFI1_IOCTL_TID_UPDATE \
+	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
+#define HFI1_IOCTL_TID_FREE \
+	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
+#define HFI1_IOCTL_CREDIT_UPD \
+	_IO(IB_IOCTL_MAGIC, __NUM(CREDIT_UPD))
+#define HFI1_IOCTL_RECV_CTRL \
+	_IOW(IB_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
+#define HFI1_IOCTL_POLL_TYPE \
+	_IOW(IB_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
+#define HFI1_IOCTL_ACK_EVENT \
+	_IOW(IB_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
+#define HFI1_IOCTL_SET_PKEY \
+	_IOW(IB_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
+#define HFI1_IOCTL_CTXT_RESET \
+	_IO(IB_IOCTL_MAGIC, __NUM(CTXT_RESET))
+#define HFI1_IOCTL_TID_INVAL_READ \
+	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
+#define HFI1_IOCTL_GET_VERS \
+	_IOR(IB_IOCTL_MAGIC, __NUM(GET_VERS), int)
+
 #endif /* RDMA_USER_IOCTL_H */
--
2.7.4

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[PATCH rdma-next V3 5/6] RDMA/core: Rename RDMA magic number

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Rename RDMA magic number to better describe IOCTLs.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/rdma_user_ioctl.h | 35 ++++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/include/uapi/rdma/rdma_user_ioctl.h b/include/uapi/rdma/rdma_user_ioctl.h
index e9a69f0..7ecf8cd 100644
--- a/include/uapi/rdma/rdma_user_ioctl.h
+++ b/include/uapi/rdma/rdma_user_ioctl.h
@@ -40,16 +40,17 @@

 /* Documentation/ioctl/ioctl-number.txt */
 #define RDMA_IOCTL_MAGIC		0x1b
+/* Legacy name, for user space application which already use it */
 #define IB_IOCTL_MAGIC			RDMA_IOCTL_MAGIC

-#define IB_USER_MAD_REGISTER_AGENT	_IOWR(IB_IOCTL_MAGIC, 1, \
+#define IB_USER_MAD_REGISTER_AGENT	_IOWR(RDMA_IOCTL_MAGIC, 1, \
 					      struct ib_user_mad_reg_req)

-#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(IB_IOCTL_MAGIC, 2, __u32)
+#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(RDMA_IOCTL_MAGIC, 2, __u32)

-#define IB_USER_MAD_ENABLE_PKEY		_IO(IB_IOCTL_MAGIC, 3)
+#define IB_USER_MAD_ENABLE_PKEY		_IO(RDMA_IOCTL_MAGIC, 3)

-#define IB_USER_MAD_REGISTER_AGENT2     _IOWR(IB_IOCTL_MAGIC, 4, \
+#define IB_USER_MAD_REGISTER_AGENT2     _IOWR(RDMA_IOCTL_MAGIC, 4, \
 					      struct ib_user_mad_reg_req2)

 /* User commands. */
@@ -79,30 +80,30 @@
 #define __NUM(cmd) (HFI1_CMD_##cmd + 0xe0)

 #define HFI1_IOCTL_ASSIGN_CTXT \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
+	_IOWR(RDMA_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
 #define HFI1_IOCTL_CTXT_INFO \
-	_IOW(IB_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
 #define HFI1_IOCTL_USER_INFO \
-	_IOW(IB_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
 #define HFI1_IOCTL_TID_UPDATE \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
+	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
 #define HFI1_IOCTL_TID_FREE \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
+	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
 #define HFI1_IOCTL_CREDIT_UPD \
-	_IO(IB_IOCTL_MAGIC, __NUM(CREDIT_UPD))
+	_IO(RDMA_IOCTL_MAGIC, __NUM(CREDIT_UPD))
 #define HFI1_IOCTL_RECV_CTRL \
-	_IOW(IB_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
 #define HFI1_IOCTL_POLL_TYPE \
-	_IOW(IB_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
 #define HFI1_IOCTL_ACK_EVENT \
-	_IOW(IB_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
 #define HFI1_IOCTL_SET_PKEY \
-	_IOW(IB_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
+	_IOW(RDMA_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
 #define HFI1_IOCTL_CTXT_RESET \
-	_IO(IB_IOCTL_MAGIC, __NUM(CTXT_RESET))
+	_IO(RDMA_IOCTL_MAGIC, __NUM(CTXT_RESET))
 #define HFI1_IOCTL_TID_INVAL_READ \
-	_IOWR(IB_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
+	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
 #define HFI1_IOCTL_GET_VERS \
-	_IOR(IB_IOCTL_MAGIC, __NUM(GET_VERS), int)
+	_IOR(RDMA_IOCTL_MAGIC, __NUM(GET_VERS), int)

 #endif /* RDMA_USER_IOCTL_H */
--
2.7.4

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[PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Leon Romanovsky]

From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

MAD and HFI1 have different naming convention, this patch
simplifies and unifies their defines and names.

As part of cleanup, the HFI1 _NUM() macro and command indexes
were removed. It has a potential to break applications which use
these defines directly, while shouldn't.

Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
 include/uapi/rdma/rdma_user_ioctl.h | 98 ++++++++++++++-----------------------
 1 file changed, 38 insertions(+), 60 deletions(-)

diff --git a/include/uapi/rdma/rdma_user_ioctl.h b/include/uapi/rdma/rdma_user_ioctl.h
index 7ecf8cd..9388125 100644
--- a/include/uapi/rdma/rdma_user_ioctl.h
+++ b/include/uapi/rdma/rdma_user_ioctl.h
@@ -39,71 +39,49 @@
 #include <rdma/hfi/hfi1_ioctl.h>

 /* Documentation/ioctl/ioctl-number.txt */
-#define RDMA_IOCTL_MAGIC		0x1b
+#define RDMA_IOCTL_MAGIC	0x1b
 /* Legacy name, for user space application which already use it */
-#define IB_IOCTL_MAGIC			RDMA_IOCTL_MAGIC
-
-#define IB_USER_MAD_REGISTER_AGENT	_IOWR(RDMA_IOCTL_MAGIC, 1, \
-					      struct ib_user_mad_reg_req)
-
-#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(RDMA_IOCTL_MAGIC, 2, __u32)
-
-#define IB_USER_MAD_ENABLE_PKEY		_IO(RDMA_IOCTL_MAGIC, 3)
-
-#define IB_USER_MAD_REGISTER_AGENT2     _IOWR(RDMA_IOCTL_MAGIC, 4, \
-					      struct ib_user_mad_reg_req2)
-
-/* User commands. */
-#define HFI1_CMD_ASSIGN_CTXT     1	/* allocate HFI and context */
-#define HFI1_CMD_CTXT_INFO       2	/* find out what resources we got */
-#define HFI1_CMD_USER_INFO       3	/* set up userspace */
-#define HFI1_CMD_TID_UPDATE      4	/* update expected TID entries */
-#define HFI1_CMD_TID_FREE        5	/* free expected TID entries */
-#define HFI1_CMD_CREDIT_UPD      6	/* force an update of PIO credit */
-
-#define HFI1_CMD_RECV_CTRL       8	/* control receipt of packets */
-#define HFI1_CMD_POLL_TYPE       9	/* set the kind of polling we want */
-#define HFI1_CMD_ACK_EVENT       10	/* ack & clear user status bits */
-#define HFI1_CMD_SET_PKEY        11     /* set context's pkey */
-#define HFI1_CMD_CTXT_RESET      12     /* reset context's HW send context */
-#define HFI1_CMD_TID_INVAL_READ  13     /* read TID cache invalidations */
-#define HFI1_CMD_GET_VERS	 14	/* get the version of the user cdev */
+#define IB_IOCTL_MAGIC		RDMA_IOCTL_MAGIC

 /*
- * User IOCTLs can not go above 128 if they do then see common.h and change the
- * base for the snoop ioctl
+ * General blocks assignments
+ * It is closed on purpose do not expose it it user space
+ * #define MAD_CMD_BASE		0x00
+ * #define HFI1_CMD_BAS		0xE0
  */

-/*
- * Make the ioctls occupy the last 0xf0-0xff portion of the IB range
- */
-#define __NUM(cmd) (HFI1_CMD_##cmd + 0xe0)
+/* MAD specific section */
+#define IB_USER_MAD_REGISTER_AGENT	_IOWR(RDMA_IOCTL_MAGIC, 0x01, struct ib_user_mad_reg_req)
+#define IB_USER_MAD_UNREGISTER_AGENT	_IOW(RDMA_IOCTL_MAGIC,  0x02, __u32)
+#define IB_USER_MAD_ENABLE_PKEY		_IO(RDMA_IOCTL_MAGIC,   0x03)
+#define IB_USER_MAD_REGISTER_AGENT2	_IOWR(RDMA_IOCTL_MAGIC, 0x04, struct ib_user_mad_reg_req2)

-#define HFI1_IOCTL_ASSIGN_CTXT \
-	_IOWR(RDMA_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
-#define HFI1_IOCTL_CTXT_INFO \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
-#define HFI1_IOCTL_USER_INFO \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
-#define HFI1_IOCTL_TID_UPDATE \
-	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
-#define HFI1_IOCTL_TID_FREE \
-	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
-#define HFI1_IOCTL_CREDIT_UPD \
-	_IO(RDMA_IOCTL_MAGIC, __NUM(CREDIT_UPD))
-#define HFI1_IOCTL_RECV_CTRL \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
-#define HFI1_IOCTL_POLL_TYPE \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
-#define HFI1_IOCTL_ACK_EVENT \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
-#define HFI1_IOCTL_SET_PKEY \
-	_IOW(RDMA_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
-#define HFI1_IOCTL_CTXT_RESET \
-	_IO(RDMA_IOCTL_MAGIC, __NUM(CTXT_RESET))
-#define HFI1_IOCTL_TID_INVAL_READ \
-	_IOWR(RDMA_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
-#define HFI1_IOCTL_GET_VERS \
-	_IOR(RDMA_IOCTL_MAGIC, __NUM(GET_VERS), int)
+/* HFI specific section */
+/* allocate HFI and context */
+#define HFI1_IOCTL_ASSIGN_CTXT		_IOWR(RDMA_IOCTL_MAGIC, 0xE1, struct hfi1_user_info)
+/* find out what resources we got */
+#define HFI1_IOCTL_CTXT_INFO		_IOW(RDMA_IOCTL_MAGIC,  0xE2, struct hfi1_ctxt_info)
+/* set up userspace */
+#define HFI1_IOCTL_USER_INFO		_IOW(RDMA_IOCTL_MAGIC,  0xE3, struct hfi1_base_info)
+/* update expected TID entries */
+#define HFI1_IOCTL_TID_UPDATE		_IOWR(RDMA_IOCTL_MAGIC, 0xE4, struct hfi1_tid_info)
+/* free expected TID entries */
+#define HFI1_IOCTL_TID_FREE		_IOWR(RDMA_IOCTL_MAGIC, 0xE5, struct hfi1_tid_info)
+/* force an update of PIO credit */
+#define HFI1_IOCTL_CREDIT_UPD		_IO(RDMA_IOCTL_MAGIC,   0xE6)
+/* control receipt of packets */
+#define HFI1_IOCTL_RECV_CTRL		_IOW(RDMA_IOCTL_MAGIC,  0xE8, int)
+/* set the kind of polling we want */
+#define HFI1_IOCTL_POLL_TYPE		_IOW(RDMA_IOCTL_MAGIC,  0xE9, int)
+/* ack & clear user status bits */
+#define HFI1_IOCTL_ACK_EVENT		_IOW(RDMA_IOCTL_MAGIC,  0xEA, unsigned long)
+/* set context's pkey */
+#define HFI1_IOCTL_SET_PKEY		_IOW(RDMA_IOCTL_MAGIC,  0xEB, __u16)
+/* reset context's HW send context */
+#define HFI1_IOCTL_CTXT_RESET		_IO(RDMA_IOCTL_MAGIC,   0xEC)
+/* read TID cache invalidations */
+#define HFI1_IOCTL_TID_INVAL_READ	_IOWR(RDMA_IOCTL_MAGIC, 0xED, struct hfi1_tid_info)
+/* get the version of the user cdev */
+#define HFI1_IOCTL_GET_VERS		_IOR(RDMA_IOCTL_MAGIC,  0xEE, int)

 #endif /* RDMA_USER_IOCTL_H */
--
2.7.4

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Re: [PATCH rdma-next V3 4/6] RDMA/core: Move HFI1 IOCTL declarations to common file

[Jason Gunthorpe]

On Sun, Sep 04, 2016 at 02:30:33PM +0300, Leon Romanovsky wrote:

> +/* User commands. */
> +#define HFI1_CMD_ASSIGN_CTXT     1	/* allocate HFI and context */

> +#define HFI1_IOCTL_ASSIGN_CTXT \
> +	_IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)

I still vote for dropping the HFI1_CMD_ASSIGN_CTXT defines. Inlining
the number is far more readable than that ugly __NUM macro.

If it was done consistently you might have an arugment, but just doing
it in one place with no purpose is silly.

Jason
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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Jason Gunthorpe]

On Sun, Sep 04, 2016 at 02:30:35PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> 
> MAD and HFI1 have different naming convention, this patch
> simplifies and unifies their defines and names.

Ah, well, nevermind then :)

Whole thing looks good to me:

Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>

Thanks,
Jason
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Re: [PATCH rdma-next V3 4/6] RDMA/core: Move HFI1 IOCTL declarations to common file

[Leon Romanovsky]

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On Sun, Sep 04, 2016 at 08:41:58PM -0600, Jason Gunthorpe wrote:
> On Sun, Sep 04, 2016 at 02:30:33PM +0300, Leon Romanovsky wrote:
>
> > +/* User commands. */
> > +#define HFI1_CMD_ASSIGN_CTXT     1	/* allocate HFI and context */
>
> > +#define HFI1_IOCTL_ASSIGN_CTXT \
> > +	_IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
>
> I still vote for dropping the HFI1_CMD_ASSIGN_CTXT defines. Inlining
> the number is far more readable than that ugly __NUM macro.
>
> If it was done consistently you might have an arugment, but just doing
> it in one place with no purpose is silly.

It is done in patch 6. It is here to preserve one-change->one-patch
flow.

>
> Jason

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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Leon Romanovsky]

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On Sun, Sep 04, 2016 at 02:30:35PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>
> MAD and HFI1 have different naming convention, this patch
> simplifies and unifies their defines and names.
>
> As part of cleanup, the HFI1 _NUM() macro and command indexes
> were removed. It has a potential to break applications which use
> these defines directly, while shouldn't.
>
> Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> ---
>  include/uapi/rdma/rdma_user_ioctl.h | 98 ++++++++++++++-----------------------
>  1 file changed, 38 insertions(+), 60 deletions(-)
>

<....>

>  /*
> - * User IOCTLs can not go above 128 if they do then see common.h and change the
> - * base for the snoop ioctl
> + * General blocks assignments
> + * It is closed on purpose do not expose it it user space

Doug,
Do you mind to change "it it" to be "it to" and save to everyone
respin?

Thanks

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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Dalessandro, Dennis]

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On Sun, 2016-09-04 at 14:30 +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@mellanox.com>
> 
> MAD and HFI1 have different naming convention, this patch
> simplifies and unifies their defines and names.
> 
> As part of cleanup, the HFI1 _NUM() macro and command indexes
> were removed. It has a potential to break applications which use
> these defines directly, while shouldn't.

Please be explicit. It's not that it has potential. It *will* break
applications which use these defines directly.

-Denny

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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Leon Romanovsky]

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On Tue, Sep 06, 2016 at 01:00:12PM +0000, Dalessandro, Dennis wrote:
> On Sun, 2016-09-04 at 14:30 +0300, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> >
> > MAD and HFI1 have different naming convention, this patch
> > simplifies and unifies their defines and names.
> >
> > As part of cleanup, the HFI1 _NUM() macro and command indexes
> > were removed. It has a potential to break applications which use
> > these defines directly, while shouldn't.
>
> Please be explicit. It's not that it has potential. It *will* break
> applications which use these defines directly.

Yes, you are right.

Doug,
What do you expect from me? Respin?

Thanks

>
> -Denny
>
> N?????r??y????b?X??ǧv?^?)޺{.n?+????{??ٚ?{ay?\x1dʇڙ?,j\a??f???h???z?\x1e?w???\f???j:+v???w?j?m????\a????zZ+?????ݢj"??!

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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Doug Ledford]

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On 9/5/2016 1:33 AM, Leon Romanovsky wrote:
> On Sun, Sep 04, 2016 at 02:30:35PM +0300, Leon Romanovsky wrote:
>> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>>
>> MAD and HFI1 have different naming convention, this patch
>> simplifies and unifies their defines and names.
>>
>> As part of cleanup, the HFI1 _NUM() macro and command indexes
>> were removed. It has a potential to break applications which use
>> these defines directly, while shouldn't.
>>
>> Signed-off-by: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>> Signed-off-by: Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>> Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>> Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
>> ---
>>  include/uapi/rdma/rdma_user_ioctl.h | 98 ++++++++++++++-----------------------
>>  1 file changed, 38 insertions(+), 60 deletions(-)
>>
> 
> <....>
> 
>>  /*
>> - * User IOCTLs can not go above 128 if they do then see common.h and change the
>> - * base for the snoop ioctl
>> + * General blocks assignments
>> + * It is closed on purpose do not expose it it user space
> 
> Doug,
> Do you mind to change "it it" to be "it to" and save to everyone
> respin?

Fixed.


-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG Key ID: 0E572FDD


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Re: [PATCH rdma-next V3 6/6] RDMA/core: Unify style of IOCTL commands

[Doug Ledford]

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On 9/7/2016 3:01 AM, Leon Romanovsky wrote:
> On Tue, Sep 06, 2016 at 01:00:12PM +0000, Dalessandro, Dennis wrote:
>> On Sun, 2016-09-04 at 14:30 +0300, Leon Romanovsky wrote:
>>> From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>>>
>>> MAD and HFI1 have different naming convention, this patch
>>> simplifies and unifies their defines and names.
>>>
>>> As part of cleanup, the HFI1 _NUM() macro and command indexes
>>> were removed. It has a potential to break applications which use
>>> these defines directly, while shouldn't.
>>
>> Please be explicit. It's not that it has potential. It *will* break
>> applications which use these defines directly.
> 
> Yes, you are right.
> 
> Doug,
> What do you expect from me? Respin?

No, I reworded the commit message myself:


    RDMA/core: Unify style of IOCTL commands

    MAD and HFI1 have different naming convention, this patch
    simplifies and unifies their defines and names.

    As part of cleanup, the HFI1 _NUM() macro and command indexes were
    removed (controversial). This will cause intentional (and arguably
    unnecessary) breakage to the PSM user space library.


-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG Key ID: 0E572FDD


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Re: [PATCH rdma-next V3 0/6] Refactor RDMA IOCTL declarations

[Doug Ledford]

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On 9/4/2016 7:30 AM, Leon Romanovsky wrote:
> Hi Doug,
> 
> This patch set refactors RDMA IOCTL declarations, unifies their
> location, moves all current IOCTL exporters to one place and renames
> them to fix the differences in coding style.
> 
> IOCTLs commands need to export the size of their data for their transfer
> which is usually declared as a struct defined in relevant submodule.
> These structures should be visible at the linkage stage.
> 
> There are number of possible solutions to overcome this limitations.
> 
> One of the options is to declare anonymous variable which will be visible
> during the linkage. As a downside, such option won't allow direct use of
> this header by other parts of code without their specific includes of
> other logically unrelated submodules.
> 
> Another possible option will be to move declarations of that structures
> to that common header file. Such move will cause to bloat this file
> with different submodules declarations.
> 
> Our decision was to choose direct include of other exported files with
> declarations of such structures to simplify future usage of this file.
> There is no change for legacy applications and libraries.
> 
> Changes v2->v3:
>  * Added Jason's Reviewed-by
>  * Open-ceded ioctl indexes
> 
> Changes v0->v2 (v1 was skipped):
>  * Update commit messages of patch number 3 and 6.
> 
> Available in the "topic/ioctl-header" topic branch of this git repo:
> git://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git
> 
> Or for browsing:
> https://git.kernel.org/cgit/linux/kernel/git/leon/linux-rdma.git/log/?h=topic/ioctl-header
> 
> Thanks
> 
> Leon Romanovsky (6):
>   RDMA/core: Commonize RDMA IOCTL declarations location
>   RDMA/core: Move legacy MAD IOCTL declarations to common file
>   RDMA/hfi1: Avoid redeclaration error
>   RDMA/core: Move HFI1 IOCTL declarations to common file
>   RDMA/core: Rename RDMA magic number
>   RDMA/core: Unify style of IOCTL commands
> 
>  include/uapi/rdma/Kbuild            |   1 +
>  include/uapi/rdma/hfi/Kbuild        |   1 +
>  include/uapi/rdma/hfi/hfi1_ioctl.h  | 173 +++++++++++++++++++++++++++++++++++
>  include/uapi/rdma/hfi/hfi1_user.h   | 175 +-----------------------------------
>  include/uapi/rdma/ib_user_mad.h     |  14 +--
>  include/uapi/rdma/rdma_user_ioctl.h |  87 ++++++++++++++++++
>  6 files changed, 264 insertions(+), 187 deletions(-)
>  create mode 100644 include/uapi/rdma/hfi/hfi1_ioctl.h
>  create mode 100644 include/uapi/rdma/rdma_user_ioctl.h
> 
> --
> 2.7.4
> 

Series applied.

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG Key ID: 0E572FDD


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