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Date: Fri, 24 Aug 2012 20:50:52 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: David Miller <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-net-drivers@...arflare.com>
Subject: [PATCH net-next 06/16] sfc: Change state names to be clearer, and
comment them
STATE_INIT and STATE_FINI are equivalent and represent incompletely
initialised states; combine them as STATE_UNINIT.
Rename STATE_RUNNING to STATE_READY, to avoid confusion with
netif_running() and IFF_RUNNING.
The comments do not quite match current usage, but this will be
corrected in subsequent fixes.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/ethernet/sfc/efx.c | 24 +++++++++++-------------
drivers/net/ethernet/sfc/ethtool.c | 2 +-
drivers/net/ethernet/sfc/falcon_boards.c | 2 +-
drivers/net/ethernet/sfc/net_driver.h | 10 ++++------
4 files changed, 17 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 3b3f084..9f88ad8 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -202,7 +202,7 @@ static void efx_stop_all(struct efx_nic *efx);
#define EFX_ASSERT_RESET_SERIALISED(efx) \
do { \
- if ((efx->state == STATE_RUNNING) || \
+ if ((efx->state == STATE_READY) || \
(efx->state == STATE_DISABLED)) \
ASSERT_RTNL(); \
} while (0)
@@ -1556,7 +1556,7 @@ static void efx_start_all(struct efx_nic *efx)
* of these flags are safe to read under just the rtnl lock */
if (efx->port_enabled)
return;
- if ((efx->state != STATE_RUNNING) && (efx->state != STATE_INIT))
+ if ((efx->state != STATE_READY) && (efx->state != STATE_UNINIT))
return;
if (!netif_running(efx->net_dev))
return;
@@ -2286,11 +2286,11 @@ static void efx_reset_work(struct work_struct *data)
if (!pending)
return;
- /* If we're not RUNNING then don't reset. Leave the reset_pending
+ /* If we're not READY then don't reset. Leave the reset_pending
* flags set so that efx_pci_probe_main will be retried */
- if (efx->state != STATE_RUNNING) {
+ if (efx->state != STATE_READY) {
netif_info(efx, drv, efx->net_dev,
- "scheduled reset quenched. NIC not RUNNING\n");
+ "scheduled reset quenched; NIC not ready\n");
return;
}
@@ -2402,7 +2402,7 @@ static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type,
INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work);
efx->pci_dev = pci_dev;
efx->msg_enable = debug;
- efx->state = STATE_INIT;
+ efx->state = STATE_UNINIT;
strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name));
efx->net_dev = net_dev;
@@ -2490,7 +2490,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
/* Mark the NIC as fini, then stop the interface */
rtnl_lock();
- efx->state = STATE_FINI;
+ efx->state = STATE_UNINIT;
dev_close(efx->net_dev);
/* Allow any queued efx_resets() to complete */
@@ -2684,9 +2684,9 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
goto fail4;
}
- /* Switch to the running state before we expose the device to the OS,
+ /* Switch to the READY state before we expose the device to the OS,
* so that dev_open()|efx_start_all() will actually start the device */
- efx->state = STATE_RUNNING;
+ efx->state = STATE_READY;
rc = efx_register_netdev(efx);
if (rc)
@@ -2727,7 +2727,7 @@ static int efx_pm_freeze(struct device *dev)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
- efx->state = STATE_FINI;
+ efx->state = STATE_UNINIT;
netif_device_detach(efx->net_dev);
@@ -2741,8 +2741,6 @@ static int efx_pm_thaw(struct device *dev)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
- efx->state = STATE_INIT;
-
efx_start_interrupts(efx, false);
mutex_lock(&efx->mac_lock);
@@ -2753,7 +2751,7 @@ static int efx_pm_thaw(struct device *dev)
netif_device_attach(efx->net_dev);
- efx->state = STATE_RUNNING;
+ efx->state = STATE_READY;
efx->type->resume_wol(efx);
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 8cba2df..5d0e2a3 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -531,7 +531,7 @@ static void efx_ethtool_self_test(struct net_device *net_dev,
ASSERT_RTNL();
- if (efx->state != STATE_RUNNING) {
+ if (efx->state != STATE_READY) {
rc = -EIO;
goto fail1;
}
diff --git a/drivers/net/ethernet/sfc/falcon_boards.c b/drivers/net/ethernet/sfc/falcon_boards.c
index 8687a6c..ec1e99d 100644
--- a/drivers/net/ethernet/sfc/falcon_boards.c
+++ b/drivers/net/ethernet/sfc/falcon_boards.c
@@ -380,7 +380,7 @@ static ssize_t set_phy_flash_cfg(struct device *dev,
new_mode = PHY_MODE_SPECIAL;
if (!((old_mode ^ new_mode) & PHY_MODE_SPECIAL)) {
err = 0;
- } else if (efx->state != STATE_RUNNING || netif_running(efx->net_dev)) {
+ } else if (efx->state != STATE_READY || netif_running(efx->net_dev)) {
err = -EBUSY;
} else {
/* Reset the PHY, reconfigure the MAC and enable/disable
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index a4fe9a7..7ab1232 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -430,11 +430,9 @@ enum efx_int_mode {
#define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI)
enum nic_state {
- STATE_INIT = 0,
- STATE_RUNNING = 1,
- STATE_FINI = 2,
- STATE_DISABLED = 3,
- STATE_MAX,
+ STATE_UNINIT = 0, /* device being probed/removed or is frozen */
+ STATE_READY = 1, /* hardware ready and netdev registered */
+ STATE_DISABLED = 2, /* device disabled due to hardware errors */
};
/*
@@ -654,7 +652,7 @@ struct vfdi_status;
* @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues
* @irq_rx_moderation: IRQ moderation time for RX event queues
* @msg_enable: Log message enable flags
- * @state: Device state flag. Serialised by the rtnl_lock.
+ * @state: Device state number (%STATE_*). Serialised by the rtnl_lock.
* @reset_pending: Bitmask for pending resets
* @tx_queue: TX DMA queues
* @rx_queue: RX DMA queues
--
1.7.7.6
--
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
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