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path: root/drivers/net/sfc/efx.c
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Diffstat (limited to 'drivers/net/sfc/efx.c')
-rw-r--r--drivers/net/sfc/efx.c43
1 files changed, 29 insertions, 14 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 05df20e47976..fb83cdd94643 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -197,7 +197,9 @@ MODULE_PARM_DESC(debug, "Bitmapped debugging message enable value");
static void efx_remove_channels(struct efx_nic *efx);
static void efx_remove_port(struct efx_nic *efx);
+static void efx_init_napi(struct efx_nic *efx);
static void efx_fini_napi(struct efx_nic *efx);
+static void efx_fini_napi_channel(struct efx_channel *channel);
static void efx_fini_struct(struct efx_nic *efx);
static void efx_start_all(struct efx_nic *efx);
static void efx_stop_all(struct efx_nic *efx);
@@ -335,8 +337,10 @@ void efx_process_channel_now(struct efx_channel *channel)
/* Disable interrupts and wait for ISRs to complete */
efx_nic_disable_interrupts(efx);
- if (efx->legacy_irq)
+ if (efx->legacy_irq) {
synchronize_irq(efx->legacy_irq);
+ efx->legacy_irq_enabled = false;
+ }
if (channel->irq)
synchronize_irq(channel->irq);
@@ -351,6 +355,8 @@ void efx_process_channel_now(struct efx_channel *channel)
efx_channel_processed(channel);
napi_enable(&channel->napi_str);
+ if (efx->legacy_irq)
+ efx->legacy_irq_enabled = true;
efx_nic_enable_interrupts(efx);
}
@@ -426,6 +432,7 @@ efx_alloc_channel(struct efx_nic *efx, int i, struct efx_channel *old_channel)
*channel = *old_channel;
+ channel->napi_dev = NULL;
memset(&channel->eventq, 0, sizeof(channel->eventq));
rx_queue = &channel->rx_queue;
@@ -736,9 +743,13 @@ efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries)
if (rc)
goto rollback;
+ efx_init_napi(efx);
+
/* Destroy old channels */
- for (i = 0; i < efx->n_channels; i++)
+ for (i = 0; i < efx->n_channels; i++) {
+ efx_fini_napi_channel(other_channel[i]);
efx_remove_channel(other_channel[i]);
+ }
out:
/* Free unused channel structures */
for (i = 0; i < efx->n_channels; i++)
@@ -1400,6 +1411,8 @@ static void efx_start_all(struct efx_nic *efx)
efx_start_channel(channel);
}
+ if (efx->legacy_irq)
+ efx->legacy_irq_enabled = true;
efx_nic_enable_interrupts(efx);
/* Switch to event based MCDI completions after enabling interrupts.
@@ -1460,8 +1473,10 @@ static void efx_stop_all(struct efx_nic *efx)
/* Disable interrupts and wait for ISR to complete */
efx_nic_disable_interrupts(efx);
- if (efx->legacy_irq)
+ if (efx->legacy_irq) {
synchronize_irq(efx->legacy_irq);
+ efx->legacy_irq_enabled = false;
+ }
efx_for_each_channel(channel, efx) {
if (channel->irq)
synchronize_irq(channel->irq);
@@ -1593,7 +1608,7 @@ static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
*
**************************************************************************/
-static int efx_init_napi(struct efx_nic *efx)
+static void efx_init_napi(struct efx_nic *efx)
{
struct efx_channel *channel;
@@ -1602,18 +1617,21 @@ static int efx_init_napi(struct efx_nic *efx)
netif_napi_add(channel->napi_dev, &channel->napi_str,
efx_poll, napi_weight);
}
- return 0;
+}
+
+static void efx_fini_napi_channel(struct efx_channel *channel)
+{
+ if (channel->napi_dev)
+ netif_napi_del(&channel->napi_str);
+ channel->napi_dev = NULL;
}
static void efx_fini_napi(struct efx_nic *efx)
{
struct efx_channel *channel;
- efx_for_each_channel(channel, efx) {
- if (channel->napi_dev)
- netif_napi_del(&channel->napi_str);
- channel->napi_dev = NULL;
- }
+ efx_for_each_channel(channel, efx)
+ efx_fini_napi_channel(channel);
}
/**************************************************************************
@@ -2335,9 +2353,7 @@ static int efx_pci_probe_main(struct efx_nic *efx)
if (rc)
goto fail1;
- rc = efx_init_napi(efx);
- if (rc)
- goto fail2;
+ efx_init_napi(efx);
rc = efx->type->init(efx);
if (rc) {
@@ -2368,7 +2384,6 @@ static int efx_pci_probe_main(struct efx_nic *efx)
efx->type->fini(efx);
fail3:
efx_fini_napi(efx);
- fail2:
efx_remove_all(efx);
fail1:
return rc;