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authorFaisal Latif <faisal.latif@intel.com>2010-07-04 00:17:59 +0000
committerRoland Dreier <rolandd@cisco.com>2010-07-28 15:14:27 -0700
commitcd6860eb036ab4320d591fdd056f86172438fae4 (patch)
tree8c787e118cb85a6014a8d5771f9b7dbab75708f8
parent0eec495ee69e3fbbe2ef2b244a0a988a4fe2e887 (diff)
RDMA/nes: Fix hangs on ifdown
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>
-rw-r--r--drivers/infiniband/hw/nes/nes.h2
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.c12
-rw-r--r--drivers/infiniband/hw/nes/nes_nic.c13
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.c12
4 files changed, 33 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
index cc78fee1dd51..b3d145e82b4c 100644
--- a/drivers/infiniband/hw/nes/nes.h
+++ b/drivers/infiniband/hw/nes/nes.h
@@ -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 *);
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index f41d890956a1..199107abf195 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -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,
diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index 5cc0a9ae5bb1..c0c404ee3bc4 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -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);
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 9bc2d744b2ea..3b95d0473b70 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -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