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 <jackm@dev.mellanox.co.il>.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <jackm@dev.mellanox.co.il>.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Use new function ib_rate_to_mbps() to handle printing rate in debugfs,
so that we handle extended rates.
Signed-off-by: Marcel Apfelbaum <marcela@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <marcela@dev.mellanox.co.il>
Reviewed-by: Hal Rosenstock <hal@mellanox.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Fix build errors:
drivers/infiniband/hw/ipath/ipath_init_chip.c:54:1: error: 'S_IRUGO' undeclared here (not in a function)
drivers/infiniband/hw/ipath/ipath_init_chip.c:54:1: error: bit-field '<anonymous>' width not an integer constant
drivers/infiniband/hw/ipath/ipath_init_chip.c:67:1: error: 'S_IWUSR' undeclared here (not in a function)
drivers/infiniband/hw/ipath/ipath_init_chip.c:67:1: error: bit-field '<anonymous>' width not an integer constant
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Support for Packed and Unaligned (PAU) FPDUs is needed for
interoperability between NES and non-NES nodes. When the NES hardware
detects a PAU frame, it will pass it to the driver to process the
frame. NES driver creates a new frame for each FPDU and forwards it
to the hardware to be sent to its associated qp.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Print the IP address of the remote host when a critical asynchronous event is
received.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Fixes a crash that occurs during close when error async event is received.
Terminate message is not sent to the remote node if already processing close.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
When I converted some drivers from pci_map_page to skb_frag_dma_map I
neglected to convert PCI_DMA_xDEVICE into DMA_x_DEVICE and
pci_dma_mapping_error into dma_mapping_error.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for Enhanced RDMA Connection Establishment
(draft-ietf-storm-mpa-peer-connect-06), aka MPAv2. Details of draft
can be obtained from:
<http://www.ietf.org/id/draft-ietf-storm-mpa-peer-connect-06.txt>
For backwards compatibility, the MPAv2 enabled driver reverts to MPAv1
if the remote node doesn't support MPAv2.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Faisal Latif <Faisal.Latif@intel.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This patch adds support for Enhanced RDMA Connection Establishment
(draft-ietf-storm-mpa-peer-connect-06), aka MPAv2. Details of draft
can be obtained from:
<http://www.ietf.org/id/draft-ietf-storm-mpa-peer-connect-06.txt>
The patch updates the following functions for initiator perspective:
- send_mpa_request
- process_mpa_reply
- post_terminate for TERM error codes
- destroy_qp for TERM related change
- adds layer/etype/ecode to c4iw_qp_attrs for sending with TERM
- peer_abort for retrying connection attempt with MPA_v1 message
- added c4iw_reconnect function
The patch updates the following functions for responder perspective:
- process_mpa_request
- send_mpa_reply
- c4iw_accept_cr
- passes ird/ord to upper layers
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
As part of MPAv2 Enhanced RDMA Negotiation, pass max supported ird/ord
values upwards for the time being in iw_cxgb3 and amso1100.
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Update struct iw_cm_event to support propagating the ird/ord values
upwards to the application.
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The code that was recently introduced to report the number
of free contexts is flawed for multiple HCAs:
/* Return the number of free user ports (contexts) available. */
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->cfgctxts -
dd->first_user_ctxt - (u32)qib_stats.sps_ctxts);
The qib_stats is global to the module, not per HCA, so the code is broken
for multiple HCAs.
This patch adds a qib_devdata field, freectxts, that reflects the free
contexts for this HCA.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Add calls to ib_umem_release(), as in the other error-handling code in
nes_reg_user_mr().
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Roland Dreier <roland@purestorage.com>
cmd is unsigned, no need to check for < 0. Found by code inspection.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
If a received MAD contains an invalid or reserved mgmt class, we will
attempt to access method_table outside of its range. Add a check to
ensure that mgmt class falls within the handled range.
Found by code inspection.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Check that conn_param is not null before dereferencing it when
processing rdma_accept(). This is necessary to prevent a possible
system crash, which can be caused by user space.
Problem found by code inspection.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Since commit e58aa3d2d0 ("genirq: Run irq handlers with interrupts
disabled"), we run all interrupt handlers with interrupts disabled and
we even check and yell when an interrupt handler returns with
interrupts enabled -- cf commit b738a50a20 ("genirq: Warn when
handler enables interrupts").
So now this flag is a no-op and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The iw_cxgb4 module crashes at init time if the T4 card does not
support RDMA. So clean up the init logic to correctly deal with
non-RDMA cards.
- If any RDMA resources are not available, then fail the initialization
logging an info message.
- Clean up properly on initialization failures.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The RDMA CM uses the local qp_type to determine how to process an
incoming request. This can result in an incoming REQ being treated as
a SIDR REQ and vice versa. Fix this by switching off the event type
instead, and for good measure verify that the listener supports the
incoming connection request.
This problem showed up when a user space application mismatched the QP
types between a client and server app.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This oops was reported recently:
d:mon> e
cpu 0xd: Vector: 300 (Data Access) at [c0000000fd4c7120]
pc: d00000000076f194: .t3_l2t_get+0x44/0x524 [cxgb3]
lr: d000000000b02108: .init_act_open+0x150/0x3d4 [cxgb3i]
sp: c0000000fd4c73a0
msr: 8000000000009032
dar: 0
dsisr: 40000000
current = 0xc0000000fd640d40
paca = 0xc00000000054ff80
pid = 5085, comm = iscsid
d:mon> t
[c0000000fd4c7450] d000000000b02108 .init_act_open+0x150/0x3d4 [cxgb3i]
[c0000000fd4c7500] d000000000e45378 .cxgbi_ep_connect+0x784/0x8e8 [libcxgbi]
[c0000000fd4c7650] d000000000db33f0 .iscsi_if_rx+0x71c/0xb18
[scsi_transport_iscsi2]
[c0000000fd4c7740] c000000000370c9c .netlink_data_ready+0x40/0xa4
[c0000000fd4c77c0] c00000000036f010 .netlink_sendskb+0x4c/0x9c
[c0000000fd4c7850] c000000000370c18 .netlink_sendmsg+0x358/0x39c
[c0000000fd4c7950] c00000000033be24 .sock_sendmsg+0x114/0x1b8
[c0000000fd4c7b50] c00000000033d208 .sys_sendmsg+0x218/0x2ac
[c0000000fd4c7d70] c00000000033f55c .sys_socketcall+0x228/0x27c
[c0000000fd4c7e30] c0000000000086a4 syscall_exit+0x0/0x40
--- Exception: c01 (System Call) at 00000080da560cfc
The root cause was an EEH error, which sent us down the offload_close path in
the cxgb3 driver, which in turn sets cdev->l2opt to NULL, without regard for
upper layer driver (like the cxgbi drivers) which might have execution contexts
in the middle of its use. The result is the oops above, when t3_l2t_get attempts
to dereference L2DATA(cdev)->nentries in arp_hash right after the EEH error handler sets it to NULL.
The fix is to prevent the setting of the NULL pointer until after there are no
further users of it. The t3cdev->l2opt pointer is now converted to be an rcu
pointer and the L2DATA macro is now called under the protection of the
rcu_read_lock(). When the EEH error path:
t3_adapter_error->offload_close->cxgb3_offload_deactivate
Is exectured, setting of that l2opt pointer to NULL, is now gated on an rcu
quiescence point, preventing, allowing L2DATA callers to safely check for a NULL
pointer without concern that the underlying data will be freeded before the
pointer is dereferenced.
This has been tested by the reporter and shown to fix the reproted oops
[nhorman: fix up unitinialised variable reported by Dan Carpenter]
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Karen Xie <kxie@chelsio.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's host attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's session attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and drivers to use the attribute container
sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tom Tucker <tom@opengridcomputing.com>
Cc: Steve Wise <swise@opengridcomputing.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RFC3270 mandates that iSCSI PDUs are padded to the closest integer
number of four byte words. Fix the iser code to support that on both
the TX/RX flows.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The code that prepares the SG associated with SCSI command for FMR was
buggy for systems with DMA addresses that don't fit in unsigned long,
e.g under the 32-bit based XenServer dom0 sizeof(dma_addr_t) is 8.
Fix that by casting to unsigned long long a masking constant used by
the code. This resolves a crash in iser_sg_to_page_vec on this system.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Moves the drivers for the Chelsio chipsets into
drivers/net/ethernet/chelsio/ and the necessary Kconfig and Makefile
changes.
CC: Divy Le Ray <divy@chelsio.com>
CC: Dimitris Michailidis <dm@chelsio.com>
CC: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Convert to DIV_ROUND_UP_SECTOR_T usage for sectors / dev_max_sectors
kernel.h: Add DIV_ROUND_UP_ULL and DIV_ROUND_UP_SECTOR_T macro usage
iscsi-target: Add iSCSI fabric support for target v4.1
iscsi: Add Serial Number Arithmetic LT and GT into iscsi_proto.h
iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]
iscsi: Resolve iscsi_proto.h naming conflicts with drivers/target/iscsi
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>
Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch renames the following iscsi_proto.h structures to avoid
namespace issues with drivers/target/iscsi/iscsi_target_core.h:
*) struct iscsi_cmd -> struct iscsi_scsi_req
*) struct iscsi_cmd_rsp -> struct iscsi_scsi_rsp
*) struct iscsi_login -> struct iscsi_login_req
This patch includes useful ISCSI_FLAG_LOGIN_[CURRENT,NEXT]_STAGE*,
and ISCSI_FLAG_SNACK_TYPE_* definitions used by iscsi_target_mod, and
fixes the incorrect definition of struct iscsi_snack to following
RFC-3720 Section 10.16. SNACK Request.
Also, this patch updates libiscsi, iSER, be2iscsi, and bn2xi to
use the updated structure definitions in a handful of locations.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (26 commits)
IB/qib: Defer HCA error events to tasklet
mlx4_core: Bump the driver version to 1.0
RDMA/cxgb4: Use printk_ratelimited() instead of printk_ratelimit()
IB/mlx4: Support PMA counters for IBoE
IB/mlx4: Use flow counters on IBoE ports
IB/pma: Add include file for IBA performance counters definitions
mlx4_core: Add network flow counters
mlx4_core: Fix location of counter index in QP context struct
mlx4_core: Read extended capabilities into the flags field
mlx4_core: Extend capability flags to 64 bits
IB/mlx4: Generate GID change events in IBoE code
IB/core: Add GID change event
RDMA/cma: Don't allow IPoIB port space for IBoE
RDMA: Allow for NULL .modify_device() and .modify_port() methods
IB/qib: Update active link width
IB/qib: Fix potential deadlock with link down interrupt
IB/qib: Add sysfs interface to read free contexts
IB/mthca: Remove unnecessary read of PCI_CAP_ID_EXP
IB/qib: Remove double define
IB/qib: Remove unnecessary read of PCI_CAP_ID_EXP
...
With ib_qib options:
options ib_qib krcvqs=1 pcie_caps=0x51 rcvhdrcnt=4096 singleport=1 ibmtu=4
a run of ib_write_bw -a yields the following:
------------------------------------------------------------------
#bytes #iterations BW peak[MB/sec] BW average[MB/sec]
1048576 5000 2910.64 229.80
------------------------------------------------------------------
The top cpu use in a profile is:
CPU: Intel Architectural Perfmon, speed 2400.15 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask
of 0x00 (No unit mask) count 1002300
Counted LLC_MISSES events (Last level cache demand requests from this core that
missed the LLC) with a unit mask of 0x41 (No unit mask) count 10000
samples % samples % app name symbol name
15237 29.2642 964 17.1195 ib_qib.ko qib_7322intr
12320 23.6618 1040 18.4692 ib_qib.ko handle_7322_errors
4106 7.8860 0 0 vmlinux vsnprintf
Analysis of the stats, profile, the code, and the annotated profile indicate:
- All of the overflow interrupts (one per packet overflow) are
serviced on CPU0 with no mitigation on the frequency.
- All of the receive interrupts are being serviced by CPU0. (That is
the way truescale.cmds statically allocates the kctx IRQs to CPU)
- The code is spending all of its time servicing QIB_I_C_ERROR
RcvEgrFullErr interrupts on CPU0, starving the packet receive
processing.
- The decode_err routine is very inefficient, using a printf variant
to format a "%s" and continues to loop when the errs mask has been
cleared.
- Both qib_7322intr and handle_7322_errors read pci registers, which
is very inefficient.
The fix does the following:
- Adds a tasklet to service QIB_I_C_ERROR
- Replaces the very inefficient scnprintf() with a memcpy(). A field
is added to qib_hwerror_msgs to save the sizeof("string") at
compile time so that a strlen is not needed during err_decode().
- The most frequent errors (Overflows) are serviced first to exit the
loop as early as possible.
- The loop now exits as soon as the errs mask is clear rather than
fruitlessly looping through the msp array.
With this fix the performance changes to:
------------------------------------------------------------------
#bytes #iterations BW peak[MB/sec] BW average[MB/sec]
1048576 5000 2990.64 2941.35
------------------------------------------------------------------
During testing of the error handling overflow patch, it was determined
that some CPU's were slower when servicing both overflow and receive
interrupts on CPU0 with different MSI interrupt vectors.
This patch adds an option (krcvq01_no_msi) to not use a dedicated MSI
interrupt for kctx's < 2 and to service them on the default interrupt.
For some CPUs, the cost of the interrupt enter/exit is more costly
than then the additional PCI read in the default handler.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
- unify vlan and nonvlan rx path
- kill nesvnic->vlan_grp and nes_netdev_vlan_rx_register
- allow to turn on/off rx/tx vlan accel via ethtool (set_features)
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since printk_ratelimit() shouldn't be used anymore (see comment in
include/linux/printk.h), replace it with printk_ratelimited().
Signed-off-by: Manuel Zerpies <manuel.f.zerpies@ww.stud.uni-erlangen.de>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Use the per port counter attached to all QPs created on that port to
implement port level packets/bytes performance counters a la IB.
Derived from a patch by Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Allocate flow counter per Ethernet/IBoE port, and attach this counter
to all the QPs created on that port. Based on patch by Eli Cohen
<eli@mellanox.co.il>.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
IBoE doesn't use LIDs. Use the GID change event to update the IB core
cache for addition/deletion of GIDs.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <eli@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This patch fixes a kernel crash in cma_set_qkey().
When the link layer is Ethernet, it is wrong to use IPoIB port space
since no IPoIB interface is available. Specifically, setting the
Q_Key when port space is RDMA_PS_IPOIB requires MGID calculation and
an SA query, which doesn't make sense over Ethernet.
Signed-off-by: Moni Shoua <monis@mellanox.co.il>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
These methods don't make sense for iWARP devices, so rather than
forcing them to implement stubs, just return -ENOSYS in the core if
the hardware driver doesn't set .modify_device and/or .modify_port.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Update the active link width on QLE7220 chips when link goes down if
chip width does not match shadowed width.
Signed-off-by: Mitko Haralanov <mitko@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
There is a possibility of a deadlock due to the way locks are
acquired and released in qib_set_uevent_bits(). The function
qib_set_uevent_bits() is called in process context and it uses
spin_lock() and spin_unlock(). This same lock is acquired/released
in interrupt context which can lead to a deadlock when running on
the same cpu.
The fix is to replace spin_lock() and spin_unlock() with
spin_lock_irqsave() and spin_unlock_irqrestore() respectively in
qib_set_uevent_bits().
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Indicate the number of free user contexts via the sysfs file
/sys/class/infiniband/qib0/nfreectxts as required for PSM.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it. Also, pci_is_pcie is a
better way of determining if the device is PCIE or not (as it uses the
same saved PCIE capability offset).
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Adapt to new api. We plan to remove old one later. Almost all
changes are trivial, but there is one real fix: the following code is
unsafe:
int ncpus = num_online_cpus()
for (i = 0; i < ncpus; i++) {
..
}
because 1) we don't guarantee last bit of online cpus is equal to
num_online_cpus(). some arch assign sparse cpu number. 2) cpu
hotplugging may change cpu_online_mask at same time. we need to pin
it by get_online_cpus().
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Adapt to use new APIs. We plan to remove old one later and plan to
change current->cpus_allowed implementation.
No functional change.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Avoid assigning an IS_ERR value to the cm_id pointer. This fixes a
few anomalies in the error flow due to confusion about checking for
NULL vs IS_ERR, and eliminates the need to test for the IS_ERR value
every time we wish to determine if the cma_id object has a cm device
associated with it.
Also, eliminate the now-unnecessary procedure cma_has_cm_dev (we can
check directly for the existence of the device pointer -- for a
non-NULL check, makes no difference if it is the iwarp or the ib
pointer).
Finally, make a few code changes here to improve coding consistency.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
SCSI scanning of a channel🆔lun triplet in Linux works as follows
(function scsi_scan_target() in drivers/scsi/scsi_scan.c):
- If lun == SCAN_WILD_CARD, send a REPORT LUNS command to the target
and process the result.
- If lun != SCAN_WILD_CARD, send an INQUIRY command to the LUN
corresponding to the specified channel🆔lun triplet to verify
whether the LUN exists.
So a SCSI driver must either take the channel and target id values in
account in its quecommand() function or it should declare that it only
supports one channel and one target id.
Currently the ib_srp driver does neither. As a result scanning the
SCSI bus via e.g. rescan-scsi-bus.sh causes many duplicate SCSI
devices to be created. For each 0:0:L device, several duplicates are
created with the same LUN number and with (C:I) != (0:0). Fix this by
declaring that the ib_srp driver only supports one channel and one
target id.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: <stable@kernel.org>
Acked-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Commits 71c29bd5c2 ("IB/uverbs: Add devnode method to set path/mode")
and c3af0980ce ("IB: Add devnode methods to cm_class and umad_class")
added devnode methods that set the mode.
However, these methods don't check for a NULL mode, and so we get a
crash when unloading modules because devtmpfs_delete_node() calls
device_get_devnode() with mode == NULL.
Add the missing checks.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
[ Also fix cm.c. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Due to timing, it is possible for the LOS and DFE to remain on. This
is due to the link progressing to LinkUP prior to the driver getting
the first Status Changed interrupt. By expanding the conditions under
which LOS is turned off and DFE timeout is being set, timing is no
longer an issue.
Signed-off-by: Mitko Haralanov <mitko@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
- fix a race where the driver could end up sending a close_con_req
after an abort_rpl. In c4iw_ep_disconnect(), send abort or close
request with the ep mutex held.
- fix a hang where driver fails to wake up when a connection is reset
during a normal close. Wake up any waiters in the interrupt path,
and correctly cleanup after rdma_fini() failures.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Remove left-over code from T3 that limited MR sizes to 32b.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Memory allocated for user CQs gets rounded up to the next page
boundary. And after rounding, we recalculate the resulting IQ depth
and we need to make sure we don't exceed the HW limits.
This bug can result a much smaller CQ allocated than was expected if
the HW size field is exceeded, resulting in CQ overflow failures.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The message size allocated for rtnl ifinfo dumps was limited to
a single page. This is not enough for additional interface info
available with devices that support SR-IOV and caused a bug in
which VF info would not be displayed if more than approximately
40 VFs were created per interface.
Implement a new function pointer for the rtnl_register service that will
calculate the amount of data required for the ifinfo dump and allocate
enough data to satisfy the request.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* remove interrupt.g inclusion from netdevice.h -- not needed
* fixup fallout, add interrupt.h and hardirq.h back where needed.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* '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/rdma_cm.h>
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()
Save the PID associated with an RDMA CM ID for reporting via netlink.
Signed-off-by: Nir Muchtar <nirm@voltaire.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 <nirm@voltaire.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The RDMA CM currently infers the QP type from the port space selected
by the user. In the future (eg with RDMA_PS_IB or XRC), there may not
be a 1-1 correspondence between port space and QP type. For netlink
export of RDMA CM state, we want to export the QP type to userspace,
so it is cleaner to explicitly associate a QP type to an ID.
Modify rdma_create_id() to allow the user to specify the QP type, and
use it to make our selections of datagram versus connected mode.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Move cma.c's internal definition of enum cma_state to enum rdma_cm_state
in an exported header so that it can be exported via RDMA netlink.
Signed-off-by: Nir Muchtar <nirm@voltaire.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
It should check if strict_strtoul() succeeds before using
'wqm_quanta_value'.
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
[ Convert to kstrtoul() directly while we're here. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
tx_ack() wasn't checking the endpoint state and consequently would
attempt to post the p2p 0B read on an endpoint/QP that is closing or
aborting. This causes a NULL pointer dereference crash.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
There exists a race condition when using wait_queue_head_t objects
that are declared on the stack. This was being done in a few places
where we are sending work requests to the FW and awaiting replies, but
we don't have an endpoint structure with an embedded c4iw_wr_wait
struct. So the code was allocating it locally on the stack. Bad
design. The race is:
1) thread on cpuX declares the wait_queue_head_t on the stack, then
posts a firmware WR with that wait object ptr as the cookie to be
returned in the WR reply. This thread will proceed to block in
wait_event_timeout() but before it does:
2) An interrupt runs on cpuY with the WR reply. fw6_msg() handles
this and calls c4iw_wake_up(). c4iw_wake_up() sets the condition
variable in the c4iw_wr_wait object to TRUE and will call
wake_up(), but before it calls wake_up():
3) The thread on cpuX calls c4iw_wait_for_reply(), which calls
wait_event_timeout(). The wait_event_timeout() macro checks the
condition variable and returns immediately since it is TRUE. So
this thread never blocks/sleeps. The function then returns
effectively deallocating the c4iw_wr_wait object that was on the
stack.
4) So at this point cpuY has a pointer to the c4iw_wr_wait object
that is no longer valid. Further its pointing to a stack frame
that might now be in use by some other context/thread. So cpuY
continues execution and calls wake_up() on a ptr to a wait object
that as been effectively deallocated.
This race, when it hits, can cause a crash in wake_up(), which I've
seen under heavy stress. It can also corrupt the referenced stack
which can cause any number of failures.
The fix:
Use struct completion, which supports on-stack declarations.
Completions use a spinlock around setting the condition to true and
the wake up so that steps 2 and 4 above are atomic and step 3 can
never happen in-between.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Fix
drivers/infiniband/ulp/srp/ib_srp.c: In function 'srp_handle_recv':
drivers/infiniband/ulp/srp/ib_srp.c:1150: warning: cast to pointer from integer of different size
drivers/infiniband/ulp/srp/ib_srp.c: In function 'srp_send_completion':
drivers/infiniband/ulp/srp/ib_srp.c🔢 warning: cast to pointer from integer of different size
by adding an intermediate cast to uintptr_t.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Acked-by: David Dillow <dillowda@ornl.gov>
We want the ucmX, umadX and issmX device nodes to show up under
/dev/infiniband, and additionally ucmX should have mode 0666. Add
appropriate devnode methods to their class structs for this.
Signed-off-by: Roland Dreier <roland@purestorage.com>
We had a script which was looping through the devices returned from
ibstat and attempted to register a SMI agent on an ethernet device.
This caused a kernel panic for IBoE devices that don't have QP0.
Fix this by checking if the QP exists before using it.
Signed-off-by: Ira Weiny <weiny2@llnl.gov>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
We want udev to create a device node under /dev/infiniband with
permission 0666 for uverbsX devices, so add a devnode method to set the
appropriate info.
Signed-off-by: Roland Dreier <roland@purestorage.com>
We want udev to create a device node under /dev/infiniband with
permission 0666 for rdma_cm, so add that info to our struct miscdevice.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
After discovering that wide use of prefetch on modern CPUs
could be a net loss instead of a win, net drivers which were
relying on the implicit inclusion of prefetch.h via the list
headers showed up in the resulting cleanup fallout. Give
them an explicit include via the following $0.02 script.
=========================================
#!/bin/bash
MANUAL=""
for i in `git grep -l 'prefetch(.*)' .` ; do
grep -q '<linux/prefetch.h>' $i
if [ $? = 0 ] ; then
continue
fi
( echo '?^#include <linux/?a'
echo '#include <linux/prefetch.h>'
echo .
echo w
echo q
) | ed -s $i > /dev/null 2>&1
if [ $? != 0 ]; then
echo $i needs manual fixup
MANUAL="$i $MANUAL"
fi
done
echo ------------------- 8\<----------------------
echo vi $MANUAL
=========================================
Signed-off-by: Paul <paul.gortmaker@windriver.com>
[ Fixed up some incorrect #include placements, and added some
non-network drivers and the fib_trie.c case - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits)
macvlan: fix panic if lowerdev in a bond
tg3: Add braces around 5906 workaround.
tg3: Fix NETIF_F_LOOPBACK error
macvlan: remove one synchronize_rcu() call
networking: NET_CLS_ROUTE4 depends on INET
irda: Fix error propagation in ircomm_lmp_connect_response()
irda: Kill set but unused variable 'bytes' in irlan_check_command_param()
irda: Kill set but unused variable 'clen' in ircomm_connect_indication()
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport()
be2net: Kill set but unused variable 'req' in lancer_fw_download()
irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication()
atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined.
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer().
rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler()
rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection()
rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window()
pkt_sched: Kill set but unused variable 'protocol' in tc_classify()
isdn: capi: Use pr_debug() instead of ifdefs.
tg3: Update version to 3.119
tg3: Apply rx_discards fix to 5719/5720
...
Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c
as per Davem.
Add basic RDMA netlink infrastructure that allows for registration of
RDMA clients for which data is to be exported and supplies message
construction callbacks.
Signed-off-by: Nir Muchtar <nirm@voltaire.com>
[ Reorganize a few things, add CONFIG_NET dependency. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The driver reads PCI revision ID from the PCI configuration register
while it's already stored by PCI subsystem in the revision field of
struct pci_dev.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The IW_CM_EVENT_STATUS_xxx values were used in only a couple of places;
cma.c uses -Exxx values instead, and so do the amso1100, cxgb3 and cxgb4
drivers -- only nes was using the enum values (with the mild consequence
that all nes connection failures were treated as generic errors rather
than reported as timeouts or rejections).
We can fix this confusion by getting rid of enum iw_cm_event_status and
using a plain int for struct iw_cm_event.status, and converting nes to
use -Exxx as the other iWARP drivers do.
This also gets rid of the warning
drivers/infiniband/core/cma.c: In function 'cma_iw_handler':
drivers/infiniband/core/cma.c:1333:3: warning: case value '4294967185' not in enumerated type 'enum iw_cm_event_status'
drivers/infiniband/core/cma.c:1336:3: warning: case value '4294967186' not in enumerated type 'enum iw_cm_event_status'
drivers/infiniband/core/cma.c:1332:3: warning: case value '4294967192' not in enumerated type 'enum iw_cm_event_status'
Signed-off-by: Roland Dreier <roland@purestorage.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Faisal Latif <faisal.latif@intel.com>
