22 Feb, 2013
1 commit
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This patch enhances the IB core support for Memory Windows (MWs).
MWs allow an application to have better/flexible control over remote
access to memory.Two types of MWs are supported, with the second type having two flavors:
Type 1 - associated with PD only
Type 2A - associated with QPN only
Type 2B - associated with PD and QPNApplications can allocate a MW once, and then repeatedly bind the MW
to different ranges in MRs that are associated to the same PD. Type 1
windows are bound through a verb, while type 2 windows are bound by
posting a work request.The 32-bit memory key is composed of a 24-bit index and an 8-bit
key. The key is changed with each bind, thus allowing more control
over the peer's use of the memory key.The changes introduced are the following:
* add memory window type enum and a corresponding parameter to ib_alloc_mw.
* type 2 memory window bind work request support.
* create a struct that contains the common part of the bind verb struct
ibv_mw_bind and the bind work request into a single struct.
* add the ib_inc_rkey helper function to advance the tag part of an rkey.Consumer interface details:
* new device capability flags IB_DEVICE_MEM_WINDOW_TYPE_2A and
IB_DEVICE_MEM_WINDOW_TYPE_2B are added to indicate device support
for these features.Devices can set either IB_DEVICE_MEM_WINDOW_TYPE_2A or
IB_DEVICE_MEM_WINDOW_TYPE_2B if it supports type 2A or type 2B
memory windows. It can set neither to indicate it doesn't support
type 2 windows at all.* modify existing provides and consumers code to the new param of
ib_alloc_mw and the ib_mw_bind_info structureSigned-off-by: Haggai Eran
Signed-off-by: Shani Michaeli
Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier
03 Jan, 2013
1 commit
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Empty files can get deleted by the patch program, so remove empty Kbuild
files and their links from the parent Kbuilds.Signed-off-by: David Howells
Signed-off-by: Linus Torvalds
22 Nov, 2012
1 commit
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Signed-off-by: David Howells
Acked-by: Arnd Bergmann
Acked-by: Thomas Gleixner
Acked-by: Michael Kerrisk
Acked-by: Paul E. McKenney
Acked-by: Dave Jones
Signed-off-by: Roland Dreier
07 Oct, 2012
1 commit
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set netlink_dump_control.module to avoid panic.
Signed-off-by: Gao feng
Cc: Roland Dreier
Cc: Sean Hefty
Signed-off-by: David S. Miller
01 Oct, 2012
2 commits
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When P_Key tables potentially contain both full and partial membership
copies for the same P_Key, we need a function to find the index for an
exact (16-bit) P_Key.This is necessary when the master forwards QP1 MADs sent by guests.
If the guest has sent the MAD with a limited membership P_Key, we need
to to forward the MAD using the same limited membership P_Key. Since
the master may have both the limited and the full member P_Keys in its
table, we must make sure to retrieve the limited membership P_Key in
this case.Signed-off-by: Jack Morgenstein
Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier -
Reserve bits 26-31 for internal use by low-level drivers. Two such
bits are used in the mlx4_b driver SR-IOV implementation.These enum additions guarantee that the core layer will never use
these bits, so that low level drivers may safely make use of them.Signed-off-by: Jack Morgenstein
Signed-off-by: Roland Dreier
23 Jul, 2012
1 commit
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…d 'qib' into for-linus
09 Jul, 2012
3 commits
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These macros will be reused by the mlx4 SRIOV-IB CM paravirtualization
code, and there is no reason to have them declared both in the IB core
in the mlx4 IB driver.Signed-off-by: Jack Morgenstein
Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier -
This query is needed for SRIOV alias GUID support.
The query is implemented per the IB Spec definition
in section 15.2.5.18 (GuidInfoRecord).Signed-off-by: Erez Shitrit
Signed-off-by: Jack Morgenstein
Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier -
Provide an option for the user to specify that listens should only
accept connections where the incoming address family matches that of
the locally bound address. This is used to support the equivalent of
IPV6_V6ONLY socket option, which allows an app to only accept
connection requests directed to IPv6 addresses.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier
22 May, 2012
1 commit
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…ma', 'qib' and 'raw-qp' into for-linus
19 May, 2012
1 commit
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It needs parentheses around the argument, so that it can be used with
complex arguments (e.g., "n+5").Signed-off-by: Jack Morgenstein
Signed-off-by: Roland Dreier
09 May, 2012
2 commits
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IB_QPT_RAW_PACKET allows applications to build a complete packet,
including L2 headers, when sending; on the receive side, the HW will
not strip any headers.This QP type is designed for userspace direct access to Ethernet; for
example by applications that do TCP/IP themselves. Only processes
with the NET_RAW capability are allowed to create raw packet QPs (the
name "raw packet QP" is supposed to suggest an analogy to AF_PACKET /
SOL_RAW sockets).Signed-off-by: Or Gerlitz
Reviewed-by: Sean Hefty
Signed-off-by: Roland Dreier -
Just as we don't allow PDs, CQs, etc. to be destroyed if there are QPs
that are attached to them, don't let a QP be destroyed if there are
multicast group(s) attached to it. Use the existing usecnt field of
struct ib_qp which was added by commit 0e0ec7e ("RDMA/core: Export
ib_open_qp() to share XRC TGT QPs") to track this.Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier
20 Mar, 2012
1 commit
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…p' and 'srpt' into for-next
09 Mar, 2012
1 commit
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Use a bit in wc_flags rather then a whole integer to hold the
"checksum OK" flag. By itself, this change doesn't reduce the size of
struct ib_wc on 64bit machines -- it stays on 56 bytes because of
padding. However, it will allow to add more fields in the future
without enlarging the struct. Also, it will let us have a unified
approach with future libibverbs checksum offload reporting, because a
bit flag doesn't break the library ABI.This patch was suggested during conversation with Liran Liss
.Signed-off-by: Or Gerlitz
Reviewed-by: Sean Hefty
Signed-off-by: Roland Dreier
06 Mar, 2012
1 commit
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The kernel IB stack uses one enumeration for IB speed, which wasn't
explicitly specified in the verbs header file. Add that enum, and use
it all over the code.The IB speed/width notation is also used by iWARP and IBoE HW drivers,
which use the convention of rate = speed * width to advertise their
port link rate.Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier
26 Feb, 2012
1 commit
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Add defines for MAD error codes so that they can be used when
returning error responses.Signed-off-by: Swapna Thete
Signed-off-by: Roland Dreier
05 Jan, 2012
1 commit
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Clean up sparse warnings in the rdma core layer.
Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier
02 Nov, 2011
2 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (62 commits)
mlx4_core: Deprecate log_num_vlan module param
IB/mlx4: Don't set VLAN in IBoE WQEs' control segment
IB/mlx4: Enable 4K mtu for IBoE
RDMA/cxgb4: Mark QP in error before disabling the queue in firmware
RDMA/cxgb4: Serialize calls to CQ's comp_handler
RDMA/cxgb3: Serialize calls to CQ's comp_handler
IB/qib: Fix issue with link states and QSFP cables
IB/mlx4: Configure extended active speeds
mlx4_core: Add extended port capabilities support
IB/qib: Hold links until tuning data is available
IB/qib: Clean up checkpatch issue
IB/qib: Remove s_lock around header validation
IB/qib: Precompute timeout jiffies to optimize latency
IB/qib: Use RCU for qpn lookup
IB/qib: Eliminate divide/mod in converting idx to egr buf pointer
IB/qib: Decode path MTU optimization
IB/qib: Optimize RC/UC code by IB operation
IPoIB: Use the right function to do DMA unmap pages
RDMA/cxgb4: Use correct QID in insert_recv_cqe()
RDMA/cxgb4: Make sure flush CQ entries are collected on connection close
... -
…sc', 'mlx4', 'misc', 'nes', 'qib' and 'xrc' into for-next
14 Oct, 2011
10 commits
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Allow processes that share the same XRC domain to open an existing
shareable QP. This permits those processes to receive events on the
shared QP and transfer ownership, so that any process may modify the
QP. The latter allows the creating process to exit, while a remaining
process can still transition it for path migration purposes.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
XRC TGT QPs are shared resources among multiple processes. Since the
creating process may exit, allow other processes which share the same
XRC domain to open an existing QP. This allows us to transfer
ownership of an XRC TGT QP to another process.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
Allow the user to indicate the QP type separately from the port space
when allocating an rdma_cm_id. With RDMA_PS_IB, there is no longer a
1:1 relationship between the QP type and port space, so we need to
switch on the QP type to select between UD and connected QPs.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
Add RDMA_PS_IB. XRC QP types will use the IB port space when operating
over the RDMA CM. For the 'IP protocol' field value, we select 0x3F,
which is listed as being for 'any local network'.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
We require additional information to create XRC SRQs than we can
exchange using the existing create SRQ ABI. Provide an enhanced create
ABI for extended SRQ types.Based on patches by Jack Morgenstein
and Roland DreierSigned-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
Allow user space to create XRC domains. Because XRCDs are expected to
be shared among multiple processes, we use inodes to identify an XRCD.Based on patches by Jack Morgenstein
Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
XRC TGT QPs are intended to be shared among multiple users and
processes. Allow the destruction of an XRC TGT QP to be done explicitly
through ib_destroy_qp() or when the XRCD is destroyed.To support destroying an XRC TGT QP, we need to track TGT QPs with the
XRCD. When the XRCD is destroyed, all tracked XRC TGT QPs are also
cleaned up.To avoid stale reference issues, if a user is holding a reference on a
TGT QP, we increment a reference count on the QP. The user releases the
reference by calling ib_release_qp. This releases any access to the QP
from a user above verbs, but allows the QP to continue to exist until
destroyed by the XRCD.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
XRC ("eXtended reliable connected") is an IB transport that provides
better scalability by allowing senders to specify which shared receive
queue (SRQ) should be used to receive a message, which essentially
allows one transport context (QP connection) to serve multiple
destinations (as long as they share an adapter, of course).XRC communication is between an initiator (INI) QP and a target (TGT)
QP. Target QPs are associated with SRQs through an XRCD. An XRC TGT QP
behaves like a receive-only RD QP. XRC INI QPs behave similarly to RC
QPs, except that work requests posted to an XRC INI QP must specify the
remote SRQ that is the target of the work request.We define two new QP types for XRC, to distinguish between INI and TGT
QPs, and update the core layer to support XRC QPs.This patch is derived from work by Jack Morgenstein
Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
XRC ("eXtended reliable connected") is an IB transport that provides
better scalability by allowing senders to specify which shared receive
queue (SRQ) should be used to receive a message, which essentially
allows one transport context (QP connection) to serve multiple
destinations (as long as they share an adapter, of course).XRC defines SRQs that are specifically used by XRC connections. Expand
the SRQ code to support XRC SRQs. An XRC SRQ is currently restricted to
only XRC use according to the IB XRC Annex.Portions of this patch were derived from work by
Jack Morgenstein .Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier -
Currently, there is only a single ("basic") type of SRQ, but with XRC
support we will add a second. Prepare for this by defining an SRQ type
and setting all current users to IB_SRQT_BASIC.Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier
13 Oct, 2011
1 commit
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XRC ("eXtended reliable connected") is an IB transport that provides
better scalability by allowing senders to specify which shared receive
queue (SRQ) should be used to receive a message, which essentially
allows one transport context (QP connection) to serve multiple
destinations (as long as they share an adapter, of course).A few new concepts are introduced to support this. This patch adds:
- A new device capability flag, IB_DEVICE_XRC, which low-level
drivers set to indicate that a device supports XRC.
- A new object type, XRC domains (struct ib_xrcd), and new verbs
ib_alloc_xrcd()/ib_dealloc_xrcd(). XRCDs are used to limit which
XRC SRQs an incoming message can target.This patch is derived from work by Jack Morgenstein .
Signed-off-by: Sean Hefty
Signed-off-by: Roland Dreier
12 Oct, 2011
1 commit
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Introduce support for the following extended speeds:
FDR-10: a Mellanox proprietary link speed which is 10.3125 Gbps with
64b/66b encoding rather than 8b/10b encoding.
FDR: IBA extended speed 14.0625 Gbps.
EDR: IBA extended speed 25.78125 Gbps.Signed-off-by: Marcel Apfelbaum
Reviewed-by: Hal Rosenstock
Reviewed-by: Sean Hefty
Signed-off-by: Roland Dreier
07 Oct, 2011
1 commit
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Update struct iw_cm_event to support propagating the ird/ord values
upwards to the application.Signed-off-by: Kumar Sanghvi
Reviewed-by: Steve Wise
Signed-off-by: Roland Dreier
16 Sep, 2011
1 commit
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This patch does several things:
- introduces __ethtool_get_settings which is called from ethtool code and
from drivers as well. Put ASSERT_RTNL there.
- dev_ethtool_get_settings() is replaced by __ethtool_get_settings()
- changes calling in drivers so rtnl locking is respected. In
iboe_get_rate was previously ->get_settings() called unlocked. This
fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same
problem. Also fixed by calling __dev_get_by_index() instead of
dev_get_by_index() and holding rtnl_lock for both calls.
- introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create()
so bnx2fc_if_create() and fcoe_if_create() are called locked as they
are from other places.
- use __ethtool_get_settings() in bonding codeSigned-off-by: Jiri Pirko
v2->v3:
-removed dev_ethtool_get_settings()
-added ASSERT_RTNL into __ethtool_get_settings()
-prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock
around it and __ethtool_get_settings() call
v1->v2:
add missing export_symbol
Reviewed-by: Ben Hutchings [except FCoE bits]
Acked-by: Ralf Baechle
Signed-off-by: David S. Miller
27 Jul, 2011
1 commit
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This allows us to move duplicated code in
(atomic_inc_not_zero() for now) toSigned-off-by: Arun Sharma
Reviewed-by: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Cc: Eric Dumazet
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Jul, 2011
2 commits
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Move the various definitions and mad structures needed for software
implementation of IBA PM agent from the ipath and qib drivers into a
single include file, which in turn could be used by more consumers.Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier -
Add IB GID change event type. This is needed for IBoE when the HW
driver updates the GID (e.g when new VLANs are added/deleted) table
and the change should be reflected to the IB core cache.Signed-off-by: Eli Cohen
Signed-off-by: Or Gerlitz
Signed-off-by: Roland Dreier
27 May, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/cma: Save PID of ID's owner
RDMA/cma: Add support for netlink statistics export
RDMA/cma: Pass QP type into rdma_create_id()
RDMA: Update exported headers list
RDMA/cma: Export enum cma_state in
RDMA/nes: Add a check for strict_strtoul()
RDMA/cxgb3: Don't post zero-byte read if endpoint is going away
RDMA/cxgb4: Use completion objects for event blocking
IB/srp: Fix integer -> pointer cast warnings
IB: Add devnode methods to cm_class and umad_class
IB/mad: Return EPROTONOSUPPORT when an RDMA device lacks the QP required
IB/uverbs: Add devnode method to set path/mode
RDMA/ucma: Add .nodename/.mode to tell userspace where to create device node
RDMA: Add netlink infrastructure
RDMA: Add error handling to ib_core_init()
26 May, 2011
1 commit
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Add callbacks and data types for statistics export of all current
devices/ids. The schema for RDMA CM is a series of netlink messages.
Each one contains an rdma_cm_stat struct. Additionally, two netlink
attributes are created for the addresses for each message (if
applicable).Their types used are:
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR (The source address for this ID)
RDMA_NL_RDMA_CM_ATTR_DST_ADDR (The destination address for this ID)
sockaddr_* structs are encapsulated within these attributes.In other words, every transaction contains a series of messages like:
-------message 1-------
struct rdma_cm_id_stats {
__u32 qp_num;
__u32 bound_dev_if;
__u32 port_space;
__s32 pid;
__u8 cm_state;
__u8 node_type;
__u8 port_num;
__u8 reserved;
}
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR attribute - contains the source address
RDMA_NL_RDMA_CM_ATTR_DST_ADDR attribute - contains the destination address
-------end 1-------
-------message 2-------
struct rdma_cm_id_stats
RDMA_NL_RDMA_CM_ATTR_SRC_ADDR attribute
RDMA_NL_RDMA_CM_ATTR_DST_ADDR attribute
-------end 2-------Signed-off-by: Nir Muchtar
Signed-off-by: Roland Dreier
