diff options
| author | Showrya M N <showrya@chelsio.com> | 2024-07-24 14:24:28 +0530 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2024-07-29 11:43:47 +0300 |
| commit | 60dc7fcafea817f3dcff7ece18095ca6260b73bc (patch) | |
| tree | f642f011f03a044f7230144d32adb75bd9ec7f0e | |
| parent | 75ab1533d79b046152d424ffe947f79f9d15682c (diff) | |
RDMA/siw: Remove NETDEV_GOING_DOWN event handler
Toggling link while running NVME-oF over siw hits a kernel panic
due to race condition within siw_handler and ib_destroy_qp().
The IB_EVENT_PORT_ERR event can alone handle destroying qps.
therefore remove unwanted processing in siw.
Suggested-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Showrya M N <showrya@chelsio.com>
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Link: https://lore.kernel.org/r/20240724085428.3813-1-showrya@chelsio.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/sw/siw/siw.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/sw/siw/siw_main.c | 37 |
2 files changed, 0 insertions, 39 deletions
diff --git a/drivers/infiniband/sw/siw/siw.h b/drivers/infiniband/sw/siw/siw.h index 75253f2b3e3d..86d4d6a2170e 100644 --- a/drivers/infiniband/sw/siw/siw.h +++ b/drivers/infiniband/sw/siw/siw.h @@ -94,8 +94,6 @@ struct siw_device { atomic_t num_mr; atomic_t num_srq; atomic_t num_ctx; - - struct work_struct netdev_down; }; struct siw_ucontext { diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c index b2b54242aa69..17abef48abcd 100644 --- a/drivers/infiniband/sw/siw/siw_main.c +++ b/drivers/infiniband/sw/siw/siw_main.c @@ -364,39 +364,6 @@ error: return NULL; } -/* - * Network link becomes unavailable. Mark all - * affected QP's accordingly. - */ -static void siw_netdev_down(struct work_struct *work) -{ - struct siw_device *sdev = - container_of(work, struct siw_device, netdev_down); - - struct siw_qp_attrs qp_attrs; - struct list_head *pos, *tmp; - - memset(&qp_attrs, 0, sizeof(qp_attrs)); - qp_attrs.state = SIW_QP_STATE_ERROR; - - list_for_each_safe(pos, tmp, &sdev->qp_list) { - struct siw_qp *qp = list_entry(pos, struct siw_qp, devq); - - down_write(&qp->state_lock); - WARN_ON(siw_qp_modify(qp, &qp_attrs, SIW_QP_ATTR_STATE)); - up_write(&qp->state_lock); - } - ib_device_put(&sdev->base_dev); -} - -static void siw_device_goes_down(struct siw_device *sdev) -{ - if (ib_device_try_get(&sdev->base_dev)) { - INIT_WORK(&sdev->netdev_down, siw_netdev_down); - schedule_work(&sdev->netdev_down); - } -} - static int siw_netdev_event(struct notifier_block *nb, unsigned long event, void *arg) { @@ -418,10 +385,6 @@ static int siw_netdev_event(struct notifier_block *nb, unsigned long event, siw_port_event(sdev, 1, IB_EVENT_PORT_ACTIVE); break; - case NETDEV_GOING_DOWN: - siw_device_goes_down(sdev); - break; - case NETDEV_DOWN: sdev->state = IB_PORT_DOWN; siw_port_event(sdev, 1, IB_EVENT_PORT_ERR); |