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Return variable was set in a line before the
actual return was called in begin_wqe function.
This patch removes such variable and simplifies the code.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The returned value should be EINVAL, because it is caused by wrong
caller and not by internal overflow event.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Remove returning errors from mlx4 poll_cq function. Polling CQ
operation in kernel never fails by Mellanox HCA architecture and
respective driver design.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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By Mellanox HW design and SW implementation, poll_cq never
fails and returns errors, so all these printks are to catch ULP bugs.
In case of such bug, the reverted patch will cause reentry of the
function, resulting in a printk storm.
This reverts commit 5412352fcd8f ("IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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We get 1 warning when build kernel with W=1:
drivers/infiniband/hw/cxgb4/qp.c:686:6: warning: no previous prototype for '_free_qp' [-Wmissing-prototypes]
In fact, this function is only used in the file in which it is declared
and don't need a declaration, but can be made static.
so this patch marks it 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The 2nd parameter of 'find_first_bit' is the number of bits to search.
In this case, we are passing 'sizeof(u64)' which is 8.
It is likely that the number of bits of 'port_mask' was expected here.
Use sizeof() * 8 to get the correct number.
It has been spotted by the following coccinelle script:
@@
expression ret, x;
@@
* ret = \(find_first_bit \| find_first_zero_bit\) (x, sizeof(...));
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The 2nd parameter of 'find_first_bit' is the number of bits to search.
In this case, we are passing 'sizeof(tmp)' which is likely to be 4 or 8
because 'tmp' is an 'unsigned long'.
It is likely that the number of bits of 'tmp' was expected here. So use
BITS_PER_LONG instead.
It has been spotted by the following coccinelle script:
@@
expression ret, x;
@@
* ret = \(find_first_bit \| find_first_zero_bit\) (x, sizeof(...));
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Majd Dibbiny <majd@mellanox.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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All three conflicts were cases of simple overlapping
changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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In all other places in this file where 'find_first_bit' is called,
port_num is defined as a 'u8' and no casting is done.
Do the same here in order to be more consistent.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Device notifications are not received after the first interface is
closed; since there is an unregister for notifications on every
interface close. Correct this by unregistering for device
notifications only when the last interface is closed. Also, make
all operations on the i40iw_notifiers_registered atomic as it
can be read/modified concurrently.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Update iwqp->hw_iwarp_state to reflect the new state of the CQP
modify QP operation. This avoids reissuing a CQP operation to
modify a QP to a state that it is already in.
Fixes: 4e9042e647ff ("i40iw: add hw and utils files")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Send a zero length last streaming mode message for loopback
connections to synchronize between accepting QP and connecting QP.
This avoids data transfer to start on the accepting QP before
the connecting QP is in RTS. Also remove function i40iw_loopback_nop()
as it is no longer used.
Fixes: f27b4746f378 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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This patch is meant to add support of ACPI to the Hisilicon RoCE
driver.
Changes done are primarily meant to detect the type and then either
use DT specific or ACPI spcific functions. Where ever possible,
this patch tries to make use of Unified Device Property Interface
APIs to support both DT and ACPI through single interface.
This patch depends upon HNS ethernet driver to Reset RoCE. This
function within HNS ethernet driver has also been enhanced to
support ACPI and is part of other accompanying patch with this
patch-set.
NOTE: The changes in this patch are done over below branch,
https://github.com/dledford/linux/tree/hns-roce
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Current driver is reporting wrong values for max_sge and
max_sge_rd in query_device. This breaks the nfs rdma and iser
in some device profiles. Fixing the driver to report
correct values from FW.
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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iwpbl->iwmr points to the structure that contains iwpbl,
which is iwmr. Setting this to NULL would result in
writing to freed memory. So just free iwmr, and return.
Fixes: d37498417947 ("i40iw: add files for iwarp interface")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Memory allocated for iwqp; iwqp->allocated_buffer is freed twice in
the create_qp error path. Correct this by having it freed only once in
i40iw_free_qp_resources().
Fixes: d37498417947 ("i40iw: add files for iwarp interface")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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This file does not use any structs or functions defined by io-mapping.h
(nor does it directly use iomap, ioremap, iounamp or friends). Remove it
to simplify verification of changes to io-mapping.h
The include existed since its inception in
commit e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c
Author: Eli Cohen <eli@mellanox.com>
Date: Sun Jul 7 17:25:49 2013 +0300
mlx5: Add driver for Mellanox Connect-IB adapters
which looks like a copy across from the Mellanox ethernet driver.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Eli Cohen <eli@mellanox.com>
Cc: Jack Morgenstein <jackm@dev.mellanox.co.il>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Matan Barak <matanb@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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In i40iw_free_virt_mem(), do not set mem->va to NULL
after freeing it as mem->va is a self-referencing pointer
to mem.
Fixes: 4e9042e647ff ("i40iw: add hw and utils files")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Add NULL check for pdata and pdata->addr before the memcpy in
i40iw_form_cm_frame(). This fixes a NULL pointer de-reference
which occurs when the MPA private data pointer is NULL. Also
only copy pdata->size bytes in the memcpy to prevent reading
past the length of the private data buffer provided by upper layer.
Fixes: f27b4746f378 ("i40iw: add connection management code")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Current cxgb4 arm CQ logic ignores IB_CQ_REPORT_MISSED_EVENTS for
request completion notification on a CQ. Due to this ib_poll_handler()
assumes all events polled and avoids further iopoll scheduling.
This patch adds logic to cxgb4 ib_req_notify_cq() handler to check if
CQ is not empty and return accordingly. Based on the return value of
ib_req_notify_cq() handler, ib_poll_handler() will schedule a run of
iopoll handler.
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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In i40iw_open(), check if interface is already open
and return success if it is.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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In i40iw_alloc_resource(), ensure that the update to
req_resource_num is protected by the lock.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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iwdev->mem_resources is incorrectly defined as an unsigned
long instead of u8. As a result, the offset into the dynamic
allocated structures in i40iw_initialize_hw_resources() is
incorrectly calculated and would lead to writing of memory
regions outside of the allocated buffer.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The i40iw initiator sends an MPA-request with ird=16 and ord=16. The cxgb4
responder sends an MPA-reply with ord = 32 causing i40iw to terminate
due to insufficient resources.
The logic to reduce the ORD to <= peer's IRD was wrong.
Reported-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The i40iw initiator sends an MPA-request with ird = 63, ord = 63. The
cxgb4 responder sends a RST. Since the inbound ord=63 and it exceeds
the max_ird/c4iw_max_read_depth (=32 default), chelsio decides to abort.
Instead, cxgb4 should adjust the ord/ird down before presenting it to
the ULP.
Reported-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Testing with CONFIG_SLUB_DEBUG_ON=y resulted in the kernel panic below.
This is the result of the mm_struct sometimes being free'd prior to
hfi1_file_close being called.
This was due to the combination of 2 reasons:
1) hfi1_file_close is deferred in process exit and it therefore may not
be called synchronously with process exit.
2) exit_mm is called prior to exit_files in do_exit. Normally this is ok
however, our kernel bypass code requires us to have access to the
mm_struct for house keeping both at "normal" close time as well as at
process exit.
Therefore, the fix is to simply keep a reference to the mm_struct until
we are done with it.
[ 3006.340150] general protection fault: 0000 [#1] SMP
[ 3006.346469] Modules linked in: hfi1 rdmavt rpcrdma ib_isert iscsi_target_mod
ib_iser libiscsi scsi_transport_iscsi ib_srpt target_core_mod
ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm
ib_cm iw_cm dm_mirror dm_region_hash dm_log dm_mod snd_hda_code
c_realtek iTCO_wdt snd_hda_codec_generic iTCO_vendor_support sb_edac edac_core
x86_pkg_temp_thermal intel_powerclamp coretemp kvm irqbypass c
rct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel lrw snd_hda_intel
gf128mul snd_hda_codec glue_helper snd_hda_core ablk_helper sn
d_hwdep cryptd snd_seq snd_seq_device snd_pcm snd_timer snd soundcore pcspkr
shpchp mei_me sg lpc_ich mei i2c_i801 mfd_core ioatdma ipmi_devi
ntf wmi ipmi_si ipmi_msghandler acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd
grace sunrpc ip_tables ext4 jbd2 mbcache mlx4_en ib_core sr_mod s
d_mod cdrom crc32c_intel mgag200 drm_kms_helper syscopyarea sysfillrect igb
sysimgblt fb_sys_fops ptp mlx4_core ttm isci pps_core ahci drm li
bsas libahci dca firewire_ohci i2c_algo_bit scsi_transport_sas firewire_core
crc_itu_t i2c_core libata [last unloaded: mlx4_ib]
[ 3006.461759] CPU: 16 PID: 11624 Comm: mpi_stress Not tainted 4.7.0-rc5+ #1
[ 3006.469915] Hardware name: Intel Corporation W2600CR ........../W2600CR, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
[ 3006.483027] task: ffff8804102f0040 ti: ffff8804102f8000 task.ti: ffff8804102f8000
[ 3006.491971] RIP: 0010:[<ffffffff810f0383>] [<ffffffff810f0383>] __lock_acquire+0xb3/0x19e0
[ 3006.501905] RSP: 0018:ffff8804102fb908 EFLAGS: 00010002
[ 3006.508447] RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000001 RCX: 0000000000000000
[ 3006.517012] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff880410b56a40
[ 3006.525569] RBP: ffff8804102fb9b0 R08: 0000000000000001 R09: 0000000000000000
[ 3006.534119] R10: ffff8804102f0040 R11: 0000000000000000 R12: 0000000000000000
[ 3006.542664] R13: ffff880410b56a40 R14: 0000000000000000 R15: 0000000000000000
[ 3006.551203] FS: 00007ff478c08700(0000) GS:ffff88042e200000(0000) knlGS:0000000000000000
[ 3006.560814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3006.567806] CR2: 00007f667f5109e0 CR3: 0000000001c06000 CR4: 00000000000406e0
[ 3006.576352] Stack:
[ 3006.579157] ffffffff8124b819 ffffffffffffffff 0000000000000000 ffff8804102fb940
[ 3006.588072] 0000000000000002 0000000000000000 ffff8804102f0040 0000000000000007
[ 3006.596971] 0000000000000006 ffff8803cad6f000 0000000000000000 ffff8804102f0040
[ 3006.605878] Call Trace:
[ 3006.609220] [<ffffffff8124b819>] ? uncharge_batch+0x109/0x250
[ 3006.616382] [<ffffffff810f2313>] lock_acquire+0xd3/0x220
[ 3006.623056] [<ffffffffa0a30bfc>] ? hfi1_release_user_pages+0x7c/0xa0 [hfi1]
[ 3006.631593] [<ffffffff81775579>] down_write+0x49/0x80
[ 3006.638022] [<ffffffffa0a30bfc>] ? hfi1_release_user_pages+0x7c/0xa0 [hfi1]
[ 3006.646569] [<ffffffffa0a30bfc>] hfi1_release_user_pages+0x7c/0xa0 [hfi1]
[ 3006.654898] [<ffffffffa0a2efb6>] cacheless_tid_rb_remove+0x106/0x330 [hfi1]
[ 3006.663417] [<ffffffff810efd36>] ? mark_held_locks+0x66/0x90
[ 3006.670498] [<ffffffff817771f6>] ? _raw_spin_unlock_irqrestore+0x36/0x60
[ 3006.678741] [<ffffffffa0a2f1ee>] tid_rb_remove+0xe/0x10 [hfi1]
[ 3006.686010] [<ffffffffa0a0c5d5>] hfi1_mmu_rb_unregister+0xc5/0x100 [hfi1]
[ 3006.694387] [<ffffffffa0a2fcb9>] hfi1_user_exp_rcv_free+0x39/0x120 [hfi1]
[ 3006.702732] [<ffffffffa09fc6ea>] hfi1_file_close+0x17a/0x330 [hfi1]
[ 3006.710489] [<ffffffff81263e9a>] __fput+0xfa/0x230
[ 3006.716595] [<ffffffff8126400e>] ____fput+0xe/0x10
[ 3006.722696] [<ffffffff810b95c6>] task_work_run+0x86/0xc0
[ 3006.729379] [<ffffffff81099933>] do_exit+0x323/0xc40
[ 3006.735672] [<ffffffff8109a2dc>] do_group_exit+0x4c/0xc0
[ 3006.742371] [<ffffffff810a7f55>] get_signal+0x345/0x940
[ 3006.748958] [<ffffffff810340c7>] do_signal+0x37/0x700
[ 3006.755328] [<ffffffff8127872a>] ? poll_select_set_timeout+0x5a/0x90
[ 3006.763146] [<ffffffff811609cb>] ? __audit_syscall_exit+0x1db/0x260
[ 3006.770853] [<ffffffff8110f3e3>] ? rcu_read_lock_sched_held+0x93/0xa0
[ 3006.778765] [<ffffffff812347a4>] ? kfree+0x1e4/0x2a0
[ 3006.784986] [<ffffffff8108e75a>] ? exit_to_usermode_loop+0x33/0xac
[ 3006.792551] [<ffffffff8108e785>] exit_to_usermode_loop+0x5e/0xac
[ 3006.799907] [<ffffffff81003dca>] do_syscall_64+0x12a/0x190
[ 3006.806664] [<ffffffff81777a7f>] entry_SYSCALL64_slow_path+0x25/0x25
[ 3006.814396] Code: 24 08 44 89 44 24 10 89 4c 24 18 e8 a8 d8 ff ff 48 85 c0
8b 4c 24 18 44 8b 44 24 10 44 8b 4c 24 08 4c 8b 14 24 0f 84 30
08 00 00 <f0> ff 80 98 01 00 00 8b 3d 48 ad be 01 45 8b a2 90 0b 00 00 85
[ 3006.837158] RIP [<ffffffff810f0383>] __lock_acquire+0xb3/0x19e0
[ 3006.844401] RSP <ffff8804102fb908>
[ 3006.851170] ---[ end trace b7b9f21cf06c27df ]---
[ 3006.927420] Kernel panic - not syncing: Fatal exception
[ 3006.933954] Kernel Offset: disabled
[ 3006.940961] ---[ end Kernel panic - not syncing: Fatal exception
[ 3006.948249] ------------[ cut here ]------------
Fixes: 3faa3d9a308e ("IB/hfi1: Make use of mm consistent")
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Previously, J_KEY generation was based on the lower 16 bits
of the user's UID. While this works, it was not good enough
as a non-root user could collide with a root user given a
sufficiently large UID.
This patch attempt to improve the J_KEY generation by using
the following algorithm:
The 16 bit J_KEY space is partitioned into 3 separate spaces
reserved for different user classes:
* all users with administtor privileges (including 'root')
will use J_KEYs in the range of 0 to 31,
* all kernel protocols, which use KDETH packets will use
J_KEYs in the range of 32 to 63, and
* all other users will use J_KEYs in the range of 64 to
65535.
The above separation is aimed at preventing different user levels
from sending packets to each other and, additionally, separate
kernel protocols from all other types of users. The later is meant
to prevent the potential corruption of kernel memory by any other
type of user.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The driver does not check if the CableInfo query is supported for the
port type. Return early if CableInfo is not supported for the port type,
making compliance with the specification explicit and preventing lower
level code from potentially doing the wrong thing if the query is not
supported for the hardware implementation.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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If 'pci_register_driver' fails, we return 'err' which is known to be 0.
Return the error instead.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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It is likely that checking the result of 'setup_ctxt' is expected here.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Validate the etype to insure that the header is correct.
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The "packet" parameter was being passed on the stack,
change it to a pointer.
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The monitor values from bytes 22 through 81 of the QSFP memory space
(SFF 8636) are dynamic and serving them out of the QSFP memory cache
maintained by the driver provides stale data to the CableInfo SMA query.
This patch refreshes the dynamic values from the QSFP memory on request
and overwrites the stale data from the cache for the overlap between the
requested range and the monitor range.
Reviewed-by: Jubin John <jubin.john@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The qp init function does a kzalloc() while holding the RCU
lock that encounters the following warning with a debug kernel
when a cat of the qp_stats is done:
[ 231.723948] rcu_scheduler_active = 1, debug_locks = 0
[ 231.731939] 3 locks held by cat/11355:
[ 231.736492] #0: (debugfs_srcu){......}, at: [<ffffffff813001a5>] debugfs_use_file_start+0x5/0x90
[ 231.746955] #1: (&p->lock){+.+.+.}, at: [<ffffffff81289a6c>] seq_read+0x4c/0x3c0
[ 231.755873] #2: (rcu_read_lock){......}, at: [<ffffffffa0a0c535>] _qp_stats_seq_start+0x5/0xd0 [hfi1]
[ 231.766862]
The init functions do an implicit next which requires the rcu read lock
before the kzalloc().
Fix for both drivers is to change the scope of the init function to only
do the allocation and the initialization of the just allocated iter.
The implict next is moved back into the respective start functions to fix
the issue.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
CC: <stable@vger.kernel.org> # 4.6.x-
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Remove duplicated include.
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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If CONFIG_FRAME_WARN is small (1K) and CONFIG_NR_CPUS big
then a frame size warning is triggered during build.
Allocate the cpu mask dynamically to silence the warning.
Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Error code EAGAIN should be used when errors are temporary and next call
might succeeds.
When error code other than EAGAIN is returned, the caller (mlx4_ib_poll)
will assume all CQE in the same bunch are error too and will drop them all.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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No need to return int if function always returns 0
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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This patch added Kconfig and Makefile for building RoCE module.
Signed-off-by: Wei Hu <xavier.huwei@huawei.com>
Signed-off-by: Nenglong Zhao <zhaonenglong@hisilicon.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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These are the various new source code files for the Hisilicon
RoCE driver for ARM architecture.
Signed-off-by: Wei Hu <xavier.huwei@huawei.com>
Signed-off-by: Nenglong Zhao <zhaonenglong@hisilicon.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Replaced mlx5_query_port_proto_oper with separate functions per link
type. The functions should take different arguments so no point in
trying to unite them.
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Now as all commands use mlx5 ifc interface, instead of doing two calls
for executing a command we embed command status checking into
mlx5_cmd_exec to simplify the interface.
Also we do here some cleanup for redundant software structures
(inbox/outbox) and functions and improved command failure output.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Prior to this patch we assumed that modify QP commands have the
same layout.
In ConnectX-4 for each QP transition there is a specific command
and their layout can vary.
e.g: 2err/2rst commands don't have QP context in their layout and before
this patch we posted the QP context in those commands.
Fortunately the FW only checks the suffix of the commands and executes
them, while ignoring all invalid data sent after the valid command
layout.
This patch removes mlx5_modify_qp_mbox_in and changes
mlx5_core_qp_modify to receive the required transition and QP context
with opt_param_mask if needed. This way the caller is not required to
provide the command inbox layout and it will be generated automatically.
mlx5_core_qp_modify will generate the command inbox/outbox layouts
according to the requested transition and will fill the requested
parameters.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Remove old representation of manually created QP/XRCD commands layout
amd use mlx5_ifc canonical structures and defines.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Remove old representation of manually created MKey/PSV commands layout,
and use mlx5_ifc canonical structures and defines.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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