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Message-Id: <1277212745-26857-7-git-send-email-amit.salecha@qlogic.com>
Date: Tue, 22 Jun 2010 06:19:03 -0700
From: amit.salecha@...gic.com
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, ameen.rahman@...gic.com,
Amit Kumar Salecha <amit.salecha@...gic.com>
Subject: [PATCH NEXT 6/8] qlcnic: offload tx timeout recovery
From: Amit Kumar Salecha <amit.salecha@...gic.com>
Offload tx timeout recovery to fw recovery func(check_health).
In check_health, first check health of device, if it its ok, then
do tx timeout recovery otherwise device recovery.
Signed-off-by: Amit Kumar Salecha <amit.salecha@...gic.com>
---
drivers/net/qlcnic/qlcnic.h | 3 +-
drivers/net/qlcnic/qlcnic_main.c | 65 ++++++++++++++++++--------------------
2 files changed, 32 insertions(+), 36 deletions(-)
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index 5c7d474..6ec34a7 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -934,6 +934,7 @@ struct qlcnic_adapter {
u8 rx_csum;
u8 portnum;
u8 physical_port;
+ u8 reset_context;
u8 mc_enabled;
u8 max_mc_count;
@@ -1001,8 +1002,6 @@ struct qlcnic_adapter {
struct delayed_work fw_work;
- struct work_struct tx_timeout_task;
-
struct qlcnic_nic_intr_coalesce coal;
unsigned long state;
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index c4602fa..3b71dfc 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -75,7 +75,6 @@ static void __devexit qlcnic_remove(struct pci_dev *pdev);
static int qlcnic_open(struct net_device *netdev);
static int qlcnic_close(struct net_device *netdev);
static void qlcnic_tx_timeout(struct net_device *netdev);
-static void qlcnic_tx_timeout_task(struct work_struct *work);
static void qlcnic_attach_work(struct work_struct *work);
static void qlcnic_fwinit_work(struct work_struct *work);
static void qlcnic_fw_poll_work(struct work_struct *work);
@@ -911,6 +910,7 @@ __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
qlcnic_linkevent_request(adapter, 1);
+ adapter->reset_context = 0;
set_bit(__QLCNIC_DEV_UP, &adapter->state);
return 0;
}
@@ -1110,6 +1110,27 @@ int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
return 0;
}
+/* Reset context in hardware only */
+static int
+qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ return -EBUSY;
+
+ netif_device_detach(netdev);
+
+ qlcnic_down(adapter, netdev);
+
+ qlcnic_up(adapter, netdev);
+
+ netif_device_attach(netdev);
+
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ return 0;
+}
+
int
qlcnic_reset_context(struct qlcnic_adapter *adapter)
{
@@ -1178,8 +1199,6 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
netdev->irq = adapter->msix_entries[0].vector;
- INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
-
if (qlcnic_read_mac_addr(adapter))
dev_warn(&pdev->dev, "failed to read mac addr\n");
@@ -1350,8 +1369,6 @@ static void __devexit qlcnic_remove(struct pci_dev *pdev)
unregister_netdev(netdev);
- cancel_work_sync(&adapter->tx_timeout_task);
-
qlcnic_detach(adapter);
if (adapter->npars != NULL)
@@ -1390,8 +1407,6 @@ static int __qlcnic_shutdown(struct pci_dev *pdev)
if (netif_running(netdev))
qlcnic_down(adapter, netdev);
- cancel_work_sync(&adapter->tx_timeout_task);
-
qlcnic_clr_all_drv_state(adapter);
clear_bit(__QLCNIC_RESETTING, &adapter->state);
@@ -1854,35 +1869,11 @@ static void qlcnic_tx_timeout(struct net_device *netdev)
return;
dev_err(&netdev->dev, "transmit timeout, resetting.\n");
- schedule_work(&adapter->tx_timeout_task);
-}
-
-static void qlcnic_tx_timeout_task(struct work_struct *work)
-{
- struct qlcnic_adapter *adapter =
- container_of(work, struct qlcnic_adapter, tx_timeout_task);
-
- if (!netif_running(adapter->netdev))
- return;
-
- if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
- return;
if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
- goto request_reset;
-
- clear_bit(__QLCNIC_RESETTING, &adapter->state);
- if (!qlcnic_reset_context(adapter)) {
- adapter->netdev->trans_start = jiffies;
- return;
-
- /* context reset failed, fall through for fw reset */
- }
-
-request_reset:
- adapter->need_fw_reset = 1;
- clear_bit(__QLCNIC_RESETTING, &adapter->state);
- QLCDB(adapter, DRV, "Resetting adapter\n");
+ adapter->need_fw_reset = 1;
+ else
+ adapter->reset_context = 1;
}
static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
@@ -2540,6 +2531,12 @@ qlcnic_check_health(struct qlcnic_adapter *adapter)
adapter->fw_fail_cnt = 0;
if (adapter->need_fw_reset)
goto detach;
+
+ if (adapter->reset_context) {
+ qlcnic_reset_hw_context(adapter);
+ adapter->netdev->trans_start = jiffies;
+ }
+
return 0;
}
--
1.6.0.2
--
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