diff options
| author | Shiraz Saleem <shiraz.saleem@intel.com> | 2017-05-19 16:14:02 -0500 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-01 16:59:52 -0400 |
| commit | f300ba2d1ef1cb8411daa5e1ae44acfa7b88236c (patch) | |
| tree | 16366c470b48ace43c5d9af3a68286eddd1a430b /drivers/infiniband/hw/i40iw/i40iw_utils.c | |
| parent | c0c643e16f9b00332cbbf3954556652dfa4ed5a3 (diff) | |
| download | kernel_replicant_linux-f300ba2d1ef1cb8411daa5e1ae44acfa7b88236c.tar.gz kernel_replicant_linux-f300ba2d1ef1cb8411daa5e1ae44acfa7b88236c.tar.bz2 kernel_replicant_linux-f300ba2d1ef1cb8411daa5e1ae44acfa7b88236c.zip | |
RDMA/i40iw: Remove MSS change support
MSS change on active QPs is not supported. Store new MSS
value for new QPs only. Remove code to modify MSS on the fly.
This also resolves a crash on QP modify to QP 0.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: i40iw_sc_qp_modify+0x22/0x280 [i40iw]
Oops: 0000 [#1] SMP KASAN
CPU: 2 PID: 1236 Comm: kworker/u16:4 Not tainted 4.12.0-rc1 #5
Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Q87M-D2H,
BIOS F7 01/17/2014
Workqueue: l2params i40iw_l2params_worker [i40iw]
task: ffff88070f5a9b40 task.stack: ffff88070f5a0000
RIP: 0010:i40iw_sc_qp_modify+0x22/0x280 [i40iw]
...
Call Trace:
i40iw_exec_cqp_cmd+0x2ce/0x410 [i40iw]
? _raw_spin_lock_irqsave+0x6f/0x80
? i40iw_process_cqp_cmd+0x1d/0x80 [i40iw]
i40iw_process_cqp_cmd+0x7c/0x80 [i40iw]
i40iw_handle_cqp_op+0x2f/0x200 [i40iw]
? trace_hardirqs_off+0xd/0x10
? _raw_spin_unlock_irqrestore+0x46/0x50
i40iw_hw_modify_qp+0x5e/0x90 [i40iw]
i40iw_qp_mss_modify+0x52/0x60 [i40iw]
i40iw_change_l2params+0x145/0x160 [i40iw]
i40iw_l2params_worker+0x1f/0x40 [i40iw]
process_one_work+0x1f5/0x650
? process_one_work+0x161/0x650
worker_thread+0x48/0x3b0
kthread+0x112/0x150
? process_one_work+0x650/0x650
? kthread_create_on_node+0x40/0x40
ret_from_fork+0x2e/0x40
Code: 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 41 55 41 89 cd 41 54 49 89 fc
53 48 89 f3 48 89 d6 48 83 ec 08 48 8b 87 10 01 00 00 <48> 8b 40 08 4c 8b b0 40 04
00 00 4c 89 f7 e8 1b e5 ff ff 48 85
RIP: i40iw_sc_qp_modify+0x22/0x280 [i40iw] RSP: ffff88070f5a7c28
CR2: 0000000000000008
---[ end trace 77a405931e296060 ]---
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_utils.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_utils.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_utils.c b/drivers/infiniband/hw/i40iw/i40iw_utils.c index 409a3781e735..56d986924a4c 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_utils.c +++ b/drivers/infiniband/hw/i40iw/i40iw_utils.c @@ -757,23 +757,6 @@ void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, b } /** - * i40iw_qp_mss_modify - modify mss for qp - * @dev: hardware control device structure - * @qp: hardware control qp - */ -void i40iw_qp_mss_modify(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp) -{ - struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev; - struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp; - struct i40iw_modify_qp_info info; - - memset(&info, 0, sizeof(info)); - info.mss_change = true; - info.new_mss = qp->vsi->mss; - i40iw_hw_modify_qp(iwdev, iwqp, &info, false); -} - -/** * i40iw_term_modify_qp - modify qp for term message * @qp: hardware control qp * @next_state: qp's next state |