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RDMA/nes: Fix hangs on ifdown

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When ib_unregister_device() is called from netdev stop during ifdown,
it sometimes hangs. Changes made to indicate port_err to ib_dispatch_event()
during netdev stop and port_active during netdev open. The
ib_unregister_device() is only called during remove of the module.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Faisal Latif 2010-07-04 00:17:59 +00:00 committed by Roland Dreier
parent 0eec495ee6
commit cd6860eb03
4 changed files with 33 additions and 6 deletions
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2
drivers/infiniband/hw/nes/nes.h
View File

@ -262,6 +262,7 @@ struct nes_device {
u16 base_doorbell_index;
u16 currcq_count;
u16 deepcq_count;
u8 iw_status;
u8 msi_enabled;
u8 netdev_count;
u8 napi_isr_ran;
@ -527,6 +528,7 @@ void nes_cm_disconn_worker(void *);
int nes_hw_modify_qp(struct nes_device *, struct nes_qp *, u32, u32, u32);
int nes_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
struct nes_ib_device *nes_init_ofa_device(struct net_device *);
void nes_port_ibevent(struct nes_vnic *nesvnic);
void nes_destroy_ofa_device(struct nes_ib_device *);
int nes_register_ofa_device(struct nes_ib_device *);

12
drivers/infiniband/hw/nes/nes_hw.c
View File

@ -3283,9 +3283,15 @@ static void nes_terminate_connection(struct nes_device *nesdev, struct nes_qp *n
else
mod_qp_flags |= NES_CQP_QP_TERM_DONT_SEND_TERM_MSG;
nes_terminate_start_timer(nesqp);
nesqp->term_flags |= NES_TERM_SENT;
nes_hw_modify_qp(nesdev, nesqp, mod_qp_flags, termlen, 0);
if (!nesdev->iw_status) {
nesqp->term_flags = NES_TERM_DONE;
nes_hw_modify_qp(nesdev, nesqp, NES_CQP_QP_IWARP_STATE_ERROR, 0, 0);
nes_cm_disconn(nesqp);
} else {
nes_terminate_start_timer(nesqp);
nesqp->term_flags |= NES_TERM_SENT;
nes_hw_modify_qp(nesdev, nesqp, mod_qp_flags, termlen, 0);
}
}
static void nes_terminate_send_fin(struct nes_device *nesdev,

13
drivers/infiniband/hw/nes/nes_nic.c
View File

@ -232,6 +232,13 @@ static int nes_netdev_open(struct net_device *netdev)
NES_MAC_INT_TX_UNDERFLOW | NES_MAC_INT_TX_ERROR));
first_nesvnic = nesvnic;
}
if (nesvnic->of_device_registered) {
nesdev->iw_status = 1;
nesdev->nesadapter->send_term_ok = 1;
nes_port_ibevent(nesvnic);
}
if (first_nesvnic->linkup) {
/* Enable network packets */
nesvnic->linkup = 1;
@ -309,9 +316,9 @@ static int nes_netdev_stop(struct net_device *netdev)
if (nesvnic->of_device_registered) {
nes_destroy_ofa_device(nesvnic->nesibdev);
nesvnic->nesibdev = NULL;
nesvnic->of_device_registered = 0;
nesdev->nesadapter->send_term_ok = 0;
nesdev->iw_status = 0;
nes_port_ibevent(nesvnic);
}
nes_destroy_nic_qp(nesvnic);

12
drivers/infiniband/hw/nes/nes_verbs.c
View File

@ -3058,6 +3058,7 @@ int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
nesqp->hte_added = 0;
}
if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
(nesdev->iw_status) &&
(nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
next_iwarp_state |= NES_CQP_QP_RESET;
} else {
@ -3936,6 +3937,17 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
return nesibdev;
}
void nes_port_ibevent(struct nes_vnic *nesvnic)
{
struct nes_ib_device *nesibdev = nesvnic->nesibdev;
struct nes_device *nesdev = nesvnic->nesdev;
struct ib_event event;
event.device = &nesibdev->ibdev;
event.element.port_num = nesvnic->logical_port + 1;
event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ib_dispatch_event(&event);
}
/**
* nes_destroy_ofa_device