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* IB/core: Fix removal of default GID cache entryAviv Heller2016-06-071-2/+8
| | | | | | | | | | | | | | | | | When deleting a default GID from the cache, its gid_type field is set to 0. This could set the gid_type to RoCE v1 for a RoCE v2 default GID, essentially making it inaccessible to future modifications, since it is no longer found by find_gid(). This fix preserves the gid_type value for default gids during cache operations. Fixes: b39ffa1df505 ('IB/core: Add gid_type to gid attribute') Signed-off-by: Aviv Heller <avivh@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/IPoIB: Fix race between ipoib_remove_one to sysfs functionsErez Shitrit2016-06-074-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ipoib_remove_one the driver holds the rtnl_lock and tries to do some operation like dev_change_flags or unregister_netdev, while sysfs callback like ipoib_vlan_delete holds sysfs mutex and tries to hold the rtnl_lock via rtnl_trylock() and restart_syscall() if the lock is not free, meanwhile ipoib_remove_one tries to get the sysfs lock in order to free its sysfs directory, and we will get a->b, b->a deadlock. Trace like the following: schedule+0x37/0x80 schedule_preempt_disabled+0xe/0x10 __mutex_lock_slowpath+0xb5/0x120 mutex_lock+0x23/0x40 rtnl_lock+0x15/0x20 netdev_run_todo+0x17c/0x320 rtnl_unlock+0xe/0x10 ipoib_vlan_delete+0x11b/0x1b0 [ib_ipoib] delete_child+0x54/0x80 [ib_ipoib] dev_attr_store+0x18/0x30 sysfs_kf_write+0x37/0x40 mutex_lock+0x16/0x40 SyS_write+0x55/0xc0 entry_SYSCALL_64_fastpath+0x16/0x75 And schedule+0x37/0x80 __kernfs_remove+0x1a8/0x260 ? wake_atomic_t_function+0x60/0x60 kernfs_remove+0x25/0x40 sysfs_remove_dir+0x50/0x80 kobject_del+0x18/0x50 device_del+0x19f/0x260 netdev_unregister_kobject+0x6a/0x80 rollback_registered_many+0x1fd/0x340 rollback_registered+0x3c/0x70 unregister_netdevice_queue+0x55/0xc0 unregister_netdev+0x20/0x30 ipoib_remove_one+0x114/0x1b0 [ib_ipoib] ib_unregister_client+0x4a/0x170 [ib_core] ? find_module_all+0x71/0xa0 ipoib_cleanup_module+0x10/0x94 [ib_ipoib] SyS_delete_module+0x1b5/0x210 entry_SYSCALL_64_fastpath+0x16/0x75 The fix is by checking the flag IPOIB_FLAG_INTF_ON_DESTROY in order to get out from the sysfs function. Fixes: 862096a8bbf8 ("IB/ipoib: Add more rtnl_link_ops callbacks") Fixes: 9baa0b036410 ("IB/ipoib: Add rtnl_link_ops support") Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/core: Fix query port failure in RoCEEli Cohen2016-06-071-0/+3
| | | | | | | | | | | | Currently ib_query_port always attempts to to read the subnet prefix by calling ib_query_gid(). For RoCE/iWARP there is no subnet manager and no subnet prefix. Fix this by querying GID[0] only for IB networks. Fixes: fad61ad4e755 ('IB/core: Add subnet prefix to port info') Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/core: fix error unwind in sysfs hw counters codeDoug Ledford2016-06-071-3/+4
| | | | | | | | | | | | Between the initial and final versions of the function setup_hw_stats, the order of variable initialization was changed. However, the unwind flow on error did not properly keep up with the flow changes. Make the unwind flow match a proper unwind of the allocation flow, then remove no longer needed variable initializations. Fixes: b40f4757daa1 (IB/core: Make device counter infrastructure dynamic) Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/core: Fix array length allocationDoug Ledford2016-06-071-2/+5
| | | | | | | | | | The new sysfs hw_counters code had an off by one in its array allocation length. Fix that and the comment along with it. Reported-by: Mark Bloch <markb@mellanox.com> Fixes: b40f4757daa1 (IB/core: Make device counter infrastructure dynamic) Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/hfi1: Suppress sparse warningsBart Van Assche2016-06-062-15/+2
| | | | | | | | | | | | Avoid that sparse reports the following warnings for the hfi1 driver: trace.c:217:13: warning: no previous prototype for ‘print_u64_array’ [-Wmissing-prototypes] user_sdma.c:1361:17: warning: dubious: !x & y Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/hfi1: Use bit 0 instead of bit 1Bart Van Assche2016-06-061-1/+1
| | | | | | | | | | | | | | The first argument of test_bit() and clear_bit() is a bit number and not a bitmask. Hence change that first argument from (1 << 0) into 0. This patch avoids that smatch reports the following warnings: user_sdma.c:1059: sdma_cache_evict() warn: test_bit() takes a bit number user_sdma.c:1590: sdma_rb_remove() warn: test_bit() takes a bit number Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/hfi1: Fix indentationBart Van Assche2016-06-061-3/+3
| | | | | | | | | | Make the indentation of the source code consistent. Detected by smatch. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/rdmavt: Annotate rvt_reset_qp()Bart Van Assche2016-06-061-0/+6
| | | | | | | | | | | This patch avoids that sparse reports the following warning: rdmavt/qp.c:507:17: warning: context imbalance in 'rvt_reset_qp' - unexpected unlock Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/mad: Fix indentationBart Van Assche2016-06-061-3/+3
| | | | | | | | | | | | Make indentation consistent. Detected by smatch. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Hal Rosenstock <hal@mellanox.com> Cc: Ira Weiny <ira.weiny@intel.com> Reviewed-By: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Hal Rosenstock <hal@mellanox.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
* RDMA/core: Fix indentationBart Van Assche2016-06-061-1/+1
| | | | | | | | | | | Make indentation consistent. Detected by smatch. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> Cc: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Sagi Grimberg <sagi@gimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/srp: Fix srp_map_sg_dma()Bart Van Assche2016-06-061-2/+1
| | | | | | | | | | | | | | | | | Because patch "IB/srp: Move common code into the caller" was applied partially srp_map_sg_dma() doesn't work properly. Fix this by applying the remainder of that patch. See also http://thread.gmane.org/gmane.linux.drivers.rdma/35803/focus=35811. Fixes: 3849e44d1c4b ("IB/srp: Move common code into the caller") Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Sagi Grimberg <sai@grimberg.me> Cc: Christoph Hellwig <hch@lst.de> Cc: Laurence Oberman <loberman@redhat.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/srp: Always initialize use_fast_reg and use_fmrBart Van Assche2016-06-061-3/+1
| | | | | | | | | | | | | | | | | | Avoid that mapping fails due to use_fast_reg != 0 or use_fmr != 0 if both member variables should be zero (if never_register == 1 or if neither FMR nor FR is supported). Remove an initialization that became superfluous due to changing a kmalloc() into a kzalloc() call. Fixes: 509c5f33f4f6 ("IB/srp: Prevent mapping failures") Cc: Sagi Grimberg <sai@grimberg.m> Cc: Christoph Hellwig <hch@lst.de> Cc: Laurence Oberman <loberman@redhat.com> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/mlx4: Fix device managed flow steering support testBart Van Assche2016-06-061-2/+2
| | | | | | | | | | | | | Perform the test for device managed flow steering support even if memory windows are not supported. I noticed this because smatch reported inconsistent indentation for the device managed flow steering support test. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Cc: Yishai Hadas <yishaih@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/usnic: Remove unused DMA attributesKrzysztof Kozlowski2016-06-061-5/+0
| | | | | | | The DMA attributes are set but never used. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/core: fix null pointer deref and mem leak in error handlingColin Ian King2016-06-061-3/+4
| | | | | | | | | | | | | | | The current error handling in setup_hw_stats has a couple of issues. It is possible to generate a null pointer deference on the kfree of hsag->attrs[i] because two of the early error exit paths jump to the kfree when hsags NULL and not allocated. Fix this by moving the kfree on stats and jumping to that, avoiding the hsag freeing. Secondly, there is a memory leak of stats if the hsag allocation fails; instead of returning, jump to the kfree on stats. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/core: fix an error code in ib_core_init()Dan Carpenter2016-06-061-1/+2
| | | | | | | | | | We should return the error code if ib_add_ibnl_clients() fails. The current code returns success. Fixes: 735c631ae99d ('IB/core: Register SA ibnl client during ib_core initialization') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/hfi1: Avoid large frame size warningLeon Romanovsky2016-06-061-17/+14
| | | | | | | | | | | | | | | | | When CONFIG_FRAME_WARN is set to 1024 bytes, which is useful to find stack consumers, we get a warning in hfi1 driver. drivers/infiniband/hw/hfi1/affinity.c: In function ‘hfi1_get_proc_affinity’: drivers/infiniband/hw/hfi1/affinity.c:415:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] This change removes unneeded buf[1024] declaration and usage. Fixes: f48ad614c100 ("IB/hfi1: Move driver out of staging") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/hfi1: fix some indentingDan Carpenter2016-06-061-1/+1
| | | | | | | | | That extra tabs are misleading. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/cm: Fix a recently introduced locking bugBart Van Assche2016-06-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ib_cm_notify() can be called from interrupt context. Hence do not reenable interrupts unconditionally in cm_establish(). This patch avoids that lockdep reports the following warning: WARNING: CPU: 0 PID: 23317 at kernel/locking/lockdep.c:2624 trace _hardirqs_on_caller+0x112/0x1b0 DEBUG_LOCKS_WARN_ON(current->hardirq_context) Call Trace: <IRQ> [<ffffffff812bd0e5>] dump_stack+0x67/0x92 [<ffffffff81056f21>] __warn+0xc1/0xe0 [<ffffffff81056f8a>] warn_slowpath_fmt+0x4a/0x50 [<ffffffff810a5932>] trace_hardirqs_on_caller+0x112/0x1b0 [<ffffffff810a59dd>] trace_hardirqs_on+0xd/0x10 [<ffffffff815992c7>] _raw_spin_unlock_irq+0x27/0x40 [<ffffffffa0382e9c>] ib_cm_notify+0x25c/0x290 [ib_cm] [<ffffffffa068fbc1>] srpt_qp_event+0xa1/0xf0 [ib_srpt] [<ffffffffa04efb97>] mlx4_ib_qp_event+0x67/0xd0 [mlx4_ib] [<ffffffffa034ec0a>] mlx4_qp_event+0x5a/0xc0 [mlx4_core] [<ffffffffa03365f8>] mlx4_eq_int+0x3d8/0xcf0 [mlx4_core] [<ffffffffa0336f9c>] mlx4_msi_x_interrupt+0xc/0x20 [mlx4_core] [<ffffffff810b0914>] handle_irq_event_percpu+0x64/0x100 [<ffffffff810b09e4>] handle_irq_event+0x34/0x60 [<ffffffff810b3a6a>] handle_edge_irq+0x6a/0x150 [<ffffffff8101ad05>] handle_irq+0x15/0x20 [<ffffffff8101a66c>] do_IRQ+0x5c/0x110 [<ffffffff8159a2c9>] common_interrupt+0x89/0x89 [<ffffffff81297a17>] blk_run_queue_async+0x37/0x40 [<ffffffffa0163e53>] rq_completed+0x43/0x70 [dm_mod] [<ffffffffa0164896>] dm_softirq_done+0x176/0x280 [dm_mod] [<ffffffff812a26c2>] blk_done_softirq+0x52/0x90 [<ffffffff8105bc1f>] __do_softirq+0x10f/0x230 [<ffffffff8105bec8>] irq_exit+0xa8/0xb0 [<ffffffff8103653e>] smp_trace_call_function_single_interrupt+0x2e/0x30 [<ffffffff81036549>] smp_call_function_single_interrupt+0x9/0x10 [<ffffffff8159a959>] call_function_single_interrupt+0x89/0x90 <EOI> Fixes: commit be4b499323bf (IB/cm: Do not queue work to a device that's going away) Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Erez Shitrit <erezsh@mellanox.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Nikolay Borisov <kernel@kyup.com> Cc: stable <stable@vger.kernel.org> # v4.2+ Acked-by: Erez Shitrit <erezsh@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* Merge branch 'for-next' of ↵Linus Torvalds2016-05-282-9/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "Here are the outstanding target pending updates for v4.7-rc1. The highlights this round include: - Allow external PR/ALUA metadata path be defined at runtime via top level configfs attribute (Lee) - Fix target session shutdown bug for ib_srpt multi-channel (hch) - Make TFO close_session() and shutdown_session() optional (hch) - Drop se_sess->sess_kref + convert tcm_qla2xxx to internal kref (hch) - Add tcm_qla2xxx endpoint attribute for basic FC jammer (Laurence) - Refactor iscsi-target RX/TX PDU encode/decode into common code (Varun) - Extend iscsit_transport with xmit_pdu, release_cmd, get_rx_pdu, validate_parameters, and get_r2t_ttt for generic ISO offload (Varun) - Initial merge of cxgb iscsi-segment offload target driver (Varun) The bulk of the changes are Chelsio's new driver, along with a number of iscsi-target common code improvements made by Varun + Co along the way" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (29 commits) iscsi-target: Fix early sk_data_ready LOGIN_FLAGS_READY race cxgbit: Use type ISCSI_CXGBIT + cxgbit tpg_np attribute iscsi-target: Convert transport drivers to signal rdma_shutdown iscsi-target: Make iscsi_tpg_np driver show/store use generic code tcm_qla2xxx Add SCSI command jammer/discard capability iscsi-target: graceful disconnect on invalid mapping to iovec target: need_to_release is always false, remove redundant check and kfree target: remove sess_kref and ->shutdown_session iscsi-target: remove usage of ->shutdown_session tcm_qla2xxx: introduce a private sess_kref target: make close_session optional target: make ->shutdown_session optional target: remove acl_stop target: consolidate and fix session shutdown cxgbit: add files for cxgbit.ko iscsi-target: export symbols iscsi-target: call complete on conn_logout_comp iscsi-target: clear tx_thread_active iscsi-target: add new offload transport type iscsi-target: use conn_transport->transport_type in text rsp ...
| * iscsi-target: Convert transport drivers to signal rdma_shutdownNicholas Bellinger2016-05-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of special casing the handful of callers that check for iser-target rdma verbs specific shutdown, use a simple flag at iscsit_transport->rdma_shutdown so each driver can signal this. Also, update iscsi-target/tcp + cxgbit to rdma_shutdown = false. Cc: Varun Prakash <varun@chelsio.com> Cc: Hariprasad Shenai <hariprasad@chelsio.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: make ->shutdown_session optionalChristoph Hellwig2016-05-101-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Turns out the template and thus many drivers got the return value wrong: 0 means the fabrics driver needs to put a session reference, which no driver except for the iSCSI target drivers did. Fortunately none of these drivers supports explicit Node ACLs, so the bug was harmless. Even without that only qla2xxx and iscsi every did real work in shutdown_session, so get rid of the boilerplate code in all other drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * iscsi-target: add void (*iscsit_get_rx_pdu)()Varun Prakash2016-05-091-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add void (*iscsit_get_rx_pdu)() to struct iscsit_transport, iscsi-target uses this callback to receive and process Rx iSCSI PDUs. cxgbit.ko needs this callback to reuse iscsi-target Rx thread. Signed-off-by: Varun Prakash <varun@chelsio.com> Acked-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | Merge tag 'for-linus' of ↵Linus Torvalds2016-05-2888-344/+62305
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull more rdma updates from Doug Ledford: "This is the second group of code for the 4.7 merge window. It looks large, but only in one sense. I'll get to that in a minute. The list of changes here breaks down as follows: - Dynamic counter infrastructure in the IB drivers This is a sysfs based code to allow free form access to the hardware counters RDMA devices might support so drivers don't need to code this up repeatedly themselves - SendOnlyFullMember multicast support - IB router support - A couple misc fixes - The big item on the list: hfi1 driver updates, plus moving the hfi1 driver out of staging There was a group of 15 patches in the hfi1 list that I thought I had in the first pull request but they weren't. So that added to the length of the hfi1 section here. As far as these go, everything but the hfi1 is pretty straight forward. The hfi1 is, if you recall, the driver that Al had complaints about how it used the write/writev interfaces in an overloaded fashion. The write portion of their interface behaved like the write handler in the IB stack proper and did bi-directional communications. The writev interface, on the other hand, only accepts SDMA request structures. The completions for those structures are sent back via an entirely different event mechanism. With the security patch, we put security checks on the write interface, however, we also knew they would be going away soon. Now, we've converted the write handler in the hfi1 driver to use ioctls from the IB reserved magic area for its bidirectional communications. With that change, Intel has addressed all of the items originally on their TODO when they went into staging (as well as many items added to the list later). As such, I moved them out, and since they were the last item in the staging/rdma directory, and I don't have immediate plans to use the staging area again, I removed the staging/rdma area. Because of the move out of staging, as well as a series of 5 patches in the hfi1 driver that removed code people thought should be done in a different way and was optional to begin with (a snoop debug interface, an eeprom driver for an eeprom connected directory to their hfi1 chip and not via an i2c bus, and a few other things like that), the line count, especially the removal count, is high" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (56 commits) staging/rdma: Remove the entire rdma subdirectory of staging IB/core: Make device counter infrastructure dynamic IB/hfi1: Fix pio map initialization IB/hfi1: Correct 8051 link parameter settings IB/hfi1: Update pkey table properly after link down or FM start IB/rdamvt: Fix rdmavt s_ack_queue sizing IB/rdmavt: Max atomic value should be a u8 IB/hfi1: Fix hard lockup due to not using save/restore spin lock IB/hfi1: Add tracing support for send with invalidate opcode IB/hfi1, qib: Add ieth to the packet header definitions IB/hfi1: Move driver out of staging IB/hfi1: Do not free hfi1 cdev parent structure early IB/hfi1: Add trace message in user IOCTL handling IB/hfi1: Remove write(), use ioctl() for user cmds IB/hfi1: Add ioctl() interface for user commands IB/hfi1: Remove unused user command IB/hfi1: Remove snoop/diag interface IB/hfi1: Remove EPROM functionality from data device IB/hfi1: Remove UI char device IB/hfi1: Remove multiple device cdev ...
| * | IB/core: Make device counter infrastructure dynamicChristoph Lameter2016-05-264-212/+504
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In practice, each RDMA device has a unique set of counters that the hardware implements. Having a central set of counters that they must all adhere to is limiting and causes many useful counters to not be available. Therefore we create a dynamic counter registration infrastructure. The driver must implement a stats structure allocation routine, in which the driver must place the directory name it wants, a list of names for all of the counters, an array of u64 counters themselves, plus a few generic configuration options. We then implement a core routine to create a sysfs file for each of the named stats elements, and a core routine to retrieve the stats when any of the sysfs attribute files are read. To avoid excessive beating on the stats generation routine in the drivers, the core code also caches the stats for a short period of time so that someone attempting to read all of the stats in a given device's directory will not result in a stats generation call per file read. Future work will attempt to standardize just the shared stats elements, and possibly add a method to get the stats via netlink in addition to sysfs. Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Mark Bloch <markb@mellanox.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com> [ Add caching, make structure names more informative, add i40iw support, other significant rewrites from the original patch ]
| * | Merge branch 'hfi1-2' into k.o/for-4.7Doug Ledford2016-05-2668-22/+61036
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| | * | IB/hfi1: Fix pio map initializationJubin John2016-05-261-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pio map initialization function is off by 1 causing the last kernel send context that is allocated to not get mapped into the pio map which leads to the last kernel send context not being used by any of the qps. The send context reserved for VL15 is taken care of by setting the scontext variable that is used as the index into the kernel send context array to 1 and does not need to be accounted for in the kernel send context counting loop as it is currently done. Fix the kernel send context counting loop to account for all the allocated send contexts and map all of them to the different VLs. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Jianxin Xiong <jianxin.xiong@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1: Correct 8051 link parameter settingsDean Luick2016-05-262-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two 8051 link settings, external device config and tuning method, were written in the wrong location and the previous settings were not cleared. For both, clear the old value and write the new value. Fixes: 8ebd4cf1852a ("staging/rdma/hfi1: Add active and optical cable support") Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1: Update pkey table properly after link down or FM startSebastian Sanchez2016-05-262-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When FM is disabled, and the HFI port on the switch is changed from MgmtAllowed=YES to MgmtAllowed=NO and the link is bounced, FULL_MGMT_P_KEY doesn't get cleared from the pkey table. This also occurs when the QSFP cable is moved from a switch port with MgmtAllowed=YES to a MgmtAllowed=NO port. Clear pkey entry properly. Also, when the driver is loaded and the switch port is set to MgmtAllowed=NO, FULL_MGMT_P_KEY shouldn't be added to pkey table after FM is started. Only set FULL_MGMT_P_KEY in the pkey table if switch port is configured to MgmtAllowed=YES. Reviewed-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/rdamvt: Fix rdmavt s_ack_queue sizingMike Marciniszyn2016-05-261-2/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rdmavt allows the driver to specify the size of the ack queue, but only uses it for the modify QP limit testing for setting the atomic limit value. The driver dependent size is now used to size the s_ack_queue ring dynamicially. Since the driver knows its size, the driver will use its define for any ring size dependent code. Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1: Fix hard lockup due to not using save/restore spin lockMike Marciniszyn2016-05-261-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b9b06cb6feda ("IB/hfi1: Fix missing lock/unlock in verbs drain callback") added a spin lock. Unfortunately, the new lock code can be called from a base level interrupt state, and an interrupt that can get stacked will attempt to get the same lock. Fix by using the flag save/restore spin lock variation. Cc: stable@vger.kernel.org # 4.6+ Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1: Add tracing support for send with invalidate opcodeJianxin Xiong2016-05-263-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable trace generation for packets with the "Send Last with Invalidate" and "Send Only with Invalidate" opcodes. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1, qib: Add ieth to the packet header definitionsJianxin Xiong2016-05-262-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new union member "ieth" (Invalidate Extended Transport Header) is added to the packet header definition in preparation of supporting the send with invalidate opcode. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/hfi1: Move driver out of stagingDennis Dalessandro2016-05-2663-0/+60972
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TODO list for the hfi1 driver was completed during 4.6. In addition other objections raised (which are far beyond what was in the TODO list) have been addressed as well. It is now time to remove the driver from staging and into the drivers/infiniband sub-tree. Reviewed-by: Jubin John <jubin.john@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/qib: Remove unused qib_7322_intr_msgs[]Jubin John2016-05-261-15/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Building the qib driver with gcc version 6.1.0 raises the following build warning: drivers/infiniband/hw/qib/qib_iba7322.c:1311:39: warning: 'qib_7322_intr_msgs' defined but not used [-Wunused-const-variable=] static const struct qib_hwerror_msgs qib_7322_intr_msgs[] = { ^~~~~~~~~~~~~~~~~~ Remove the unused qib_7322_intr_msgs[] Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/rdmavt: Use kzalloc_nodeJubin John2016-05-261-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use kzalloc_node instead of kzalloc for rdmavt memory region segment allocation to optimize for performance on NUMA platforms. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/rdmavt: Insure QP vmalloc variants zero memoryMike Marciniszyn2016-05-261-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The usage of the various vmalloc APIs do not consistently zero memory when allocating the swqe. Insure zeroing variants are used. Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | IB/rdmavt: Increase CQ callback thread priorityMike Marciniszyn2016-05-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The priority of the send engines is higher than the CQ completion thread potentially causing completions to be starved for very fast interfaces. Change the CQ kthread to match the send engine threads to minimize this delay for ULP completion processing. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | | |
| | \ \
| *-. \ \ Merge branches 'misc-4.7-2', 'ipoib' and 'ib-router' into k.o/for-4.7Doug Ledford2016-05-2615-109/+764
| |\ \ \ \
| | | * | | IB/core: Add IP to GID netlink offloadMark Bloch2016-05-243-24/+198
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is an assumption that rdmacm is used only between nodes in the same IB subnet, this why ARP resolution can be used to turn IP to GID in rdmacm. When dealing with IB communication between subnets this assumption is no longer valid. ARP resolution will get us the next hop device address and not the peer node's device address. To solve this issue, we will check user space if it can provide the GID of the peer node, and fail if not. We add a sequence number to identify each request and fill in the GID upon answer from userspace. Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | | * | | IB/core: Register SA ibnl client during ib_core initializationMark Bloch2016-05-243-22/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move SA ibnl client registration to ib_core module init. This will allow us to register a single client to handle all RDMA_NL_LS operations and make it SA independent. Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | | * | | IB/SA: Integrate ib_sa module into ib_core moduleMark Bloch2016-05-244-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consolidate ib_sa into ib_core, this commit eliminates ib_sa.ko and makes it part of ib_core.ko Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | | * | | IB/MAD: Integrate ib_mad module into ib_core moduleMark Bloch2016-05-244-14/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consolidate ib_mad into ib_core, this commit eliminates ib_mad.ko and makes it part of ib_core.ko Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | | * | | IB/core: Integrate IB address resolution module into coreLeon Romanovsky2016-05-244-13/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IB address resolution is declared as a module (ib_addr.ko) which loads itself before IB core module (ib_core.ko). It causes to the scenario where IB netlink which is initialized by IB core can't be used by ib_addr.ko. In order to solve it, we are converting ib_addr.ko to be part of IB core module. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | | | IB/IPoIB: Allow setting the device addressMark Bloch2016-05-256-6/+187
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In IB networks, and specifically in IPoIB/rdmacm traffic, the device address of an IPoIB interface is used as a means to exchange information between nodes needed for communication. Currently an IPoIB interface will always be created with a device address based on its node GUID without a way to change that. This change adds the ability to set the device address of an IPoIB interface by value. We use the set mac address ndo to do that. The flow should be broken down to two: 1) The GID value is already in the GID table, in this case the interface will be able to set carrier up. 2) The GID value is not yet in the GID table, in this case the interface won't try to join the multicast group and will wait (listen on GID_CHANGE event) until the GID is inserted. In order to track those changes, we add a new flag: * IPOIB_FLAG_DEV_ADDR_SET. When set, it means the dev_addr is a based on a value in the gid table. this bit will be cleared upon a dev_addr change triggered by the user and set after validation. Per IB spec the port GUID can't change if the module is loaded. port GUID is the basis for GID at index 0 which is the basis for the default device address of a ipoib interface. The issue is that there are devices that don't follow the spec, they change the port GUID while HCA is powered on, so in order not to break userspace applications. We need to check if the user wanted to control the device address and we assume that if he sets the device address back to be based on GID index 0, he no longer wishs to control it. In order to track this, we add an additional flag: * IPOIB_FLAG_DEV_ADDR_CTRL When setting the device address, there is no validation of the upper twelve bytes of the device address (flags, qpn, subnet prefix) as those bytes are not under the control of the user. Signed-off-by: Mark Bloch <markb@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | | | IB/ipoib: Support SendOnlyFullMember MCG for SendOnly joinErez Shitrit2016-05-253-13/+100
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check (via an SA query) if the SM supports the new option for SendOnly multicast joins. If the SM supports that option it will use the new join state to create such multicast group. If SendOnlyFullMember is supported, we wouldn't use faked FullMember state join for SendOnly MCG, use the correct state if supported. This check is performed at every invocation of mcast_restart task, to be sure that the driver stays in sync with the current state of the SM. Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | | | IB/core: Support new type of join-state for multicastErez Shitrit2016-05-251-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are four types for MCG, FullMember, NonMember, SendOnlyNonMember, and the new added type: SendOnlyFullMember. Add support for the new SendOnlyFullMember join state. The new type allows host to send join request as sendonly, it will cause the group to be created but without getting packets from this multicast back to the host. Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Christoph Lameter <cl@linux.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | | | IB/SA Agent: Add support for SA agent get ClassPortInfoErez Shitrit2016-05-251-0/+173
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New SA query function to return the ClassPortInfo struct from the SA. If the SM supports FullMemberSendOnly mode for MCG's, it sets a capability bit in the capability_mask2 field of the response. Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| | * | | | IB/core: Introduce capabilitymask2 field in ClassPortInfo madErez Shitrit2016-05-252-3/+5
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change struct ib_class_port_info to conform to IB Spec 1.3 That in order to get specific capability mask from ClassPortInfo mad. >From the IB Spec, ClassPortInfo section: "CapabilityMask2 Bits 0-26: Additional class-specific capabilities... RespTimeValue the rest 5 bits" The new struct now has one field for capabilitymask2 (previously was the reserved field) and the resp_time field. And it fixes up qib and srpt, use of the field repurposed to be used as capabilitymask2: IB/qib: Change pma_get_classportinfo IB/srpt: Adjust the use of ib_class_port_info Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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