xiaomi-sm8450/android_kernel_xiaomi_sm8450
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RDMA/nes: Generate IB_EVENT_PORT_ERR/PORT_ACTIVE events

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Depending on link state change, IB_EVENT_PORT_ERR or
IB_EVENT_PORT_ACTIVE should be generated when handling MAC interrupts.

Plugging in a cable happens to result in series of interrupts changing
driver's link state a number of times before finally staying at link
up (e.g. link up, link down, link up, link down, ..., link up).  To
prevent sending series of redundant IB_EVENT_PORT_ACTIVE and
IB_EVENT_PORT_ERR events, we use a timer to debounce them in
nes_port_ibevent().

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Maciej Sosnowski
2010-11-24 17:29:38 +00:00
committad av Roland Dreier
förälder 2a4c97ead4
incheckning ea623455b7
4 ändrade filer med 83 tillägg och 9 borttagningar
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35
drivers/infiniband/hw/nes/nes_nic.c
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@@ -144,6 +144,7 @@ static int nes_netdev_open(struct net_device *netdev)
u32 nic_active_bit;
u32 nic_active;
struct list_head *list_pos, *list_temp;
unsigned long flags;
assert(nesdev != NULL);
@@ -233,18 +234,27 @@ static int nes_netdev_open(struct net_device *netdev)
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;
netif_start_queue(netdev);
netif_carrier_on(netdev);
}
spin_lock_irqsave(&nesvnic->port_ibevent_lock, flags);
if (nesvnic->of_device_registered) {
nesdev->nesadapter->send_term_ok = 1;
if (nesvnic->linkup == 1) {
if (nesdev->iw_status == 0) {
nesdev->iw_status = 1;
nes_port_ibevent(nesvnic);
}
} else {
nesdev->iw_status = 0;
}
}
spin_unlock_irqrestore(&nesvnic->port_ibevent_lock, flags);
napi_enable(&nesvnic->napi);
nesvnic->netdev_open = 1;
@@ -263,6 +273,7 @@ static int nes_netdev_stop(struct net_device *netdev)
u32 nic_active;
struct nes_vnic *first_nesvnic = NULL;
struct list_head *list_pos, *list_temp;
unsigned long flags;
nes_debug(NES_DBG_SHUTDOWN, "nesvnic=%p, nesdev=%p, netdev=%p %s\n",
nesvnic, nesdev, netdev, netdev->name);
@@ -315,12 +326,17 @@ static int nes_netdev_stop(struct net_device *netdev)
nic_active &= nic_active_mask;
nes_write_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON, nic_active);
spin_lock_irqsave(&nesvnic->port_ibevent_lock, flags);
if (nesvnic->of_device_registered) {
nesdev->nesadapter->send_term_ok = 0;
nesdev->iw_status = 0;
nes_port_ibevent(nesvnic);
if (nesvnic->linkup == 1)
nes_port_ibevent(nesvnic);
}
del_timer_sync(&nesvnic->event_timer);
nesvnic->event_timer.function = NULL;
spin_unlock_irqrestore(&nesvnic->port_ibevent_lock, flags);
nes_destroy_nic_qp(nesvnic);
nesvnic->netdev_open = 0;
@@ -1750,7 +1766,10 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev,
nesvnic->rdma_enabled = 0;
}
nesvnic->nic_cq.cq_number = nesvnic->nic.qp_id;
init_timer(&nesvnic->event_timer);
nesvnic->event_timer.function = NULL;
spin_lock_init(&nesvnic->tx_lock);
spin_lock_init(&nesvnic->port_ibevent_lock);
nesdev->netdev[nesdev->netdev_count] = netdev;
nes_debug(NES_DBG_INIT, "Adding nesvnic (%p) to the adapters nesvnic_list for MAC%d.\n",