summaryrefslogtreecommitdiff
path: root/drivers/net/sfc/efx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/sfc/efx.c')
-rw-r--r--drivers/net/sfc/efx.c91
1 files changed, 67 insertions, 24 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index ab0e09bf154d..00c23b1babca 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -133,6 +133,16 @@ static int phy_flash_cfg;
module_param(phy_flash_cfg, int, 0644);
MODULE_PARM_DESC(phy_flash_cfg, "Set PHYs into reflash mode initially");
+static unsigned irq_adapt_low_thresh = 10000;
+module_param(irq_adapt_low_thresh, uint, 0644);
+MODULE_PARM_DESC(irq_adapt_low_thresh,
+ "Threshold score for reducing IRQ moderation");
+
+static unsigned irq_adapt_high_thresh = 20000;
+module_param(irq_adapt_high_thresh, uint, 0644);
+MODULE_PARM_DESC(irq_adapt_high_thresh,
+ "Threshold score for increasing IRQ moderation");
+
/**************************************************************************
*
* Utility functions and prototypes
@@ -182,7 +192,6 @@ static int efx_process_channel(struct efx_channel *channel, int rx_quota)
channel->rx_pkt = NULL;
}
- efx_flush_lro(channel);
efx_rx_strategy(channel);
efx_fast_push_rx_descriptors(&efx->rx_queue[channel->channel]);
@@ -224,12 +233,41 @@ static int efx_poll(struct napi_struct *napi, int budget)
rx_packets = efx_process_channel(channel, budget);
if (rx_packets < budget) {
+ struct efx_nic *efx = channel->efx;
+
+ if (channel->used_flags & EFX_USED_BY_RX &&
+ efx->irq_rx_adaptive &&
+ unlikely(++channel->irq_count == 1000)) {
+ unsigned old_irq_moderation = channel->irq_moderation;
+
+ if (unlikely(channel->irq_mod_score <
+ irq_adapt_low_thresh)) {
+ channel->irq_moderation =
+ max_t(int,
+ channel->irq_moderation -
+ FALCON_IRQ_MOD_RESOLUTION,
+ FALCON_IRQ_MOD_RESOLUTION);
+ } else if (unlikely(channel->irq_mod_score >
+ irq_adapt_high_thresh)) {
+ channel->irq_moderation =
+ min(channel->irq_moderation +
+ FALCON_IRQ_MOD_RESOLUTION,
+ efx->irq_rx_moderation);
+ }
+
+ if (channel->irq_moderation != old_irq_moderation)
+ falcon_set_int_moderation(channel);
+
+ channel->irq_count = 0;
+ channel->irq_mod_score = 0;
+ }
+
/* There is no race here; although napi_disable() will
- * only wait for netif_rx_complete(), this isn't a problem
+ * only wait for napi_complete(), this isn't a problem
* since efx_channel_processed() will have no effect if
* interrupts have already been disabled.
*/
- netif_rx_complete(napi);
+ napi_complete(napi);
efx_channel_processed(channel);
}
@@ -558,6 +596,8 @@ static void efx_link_status_changed(struct efx_nic *efx)
}
+static void efx_fini_port(struct efx_nic *efx);
+
/* This call reinitialises the MAC to pick up new PHY settings. The
* caller must hold the mac_lock */
void __efx_reconfigure_port(struct efx_nic *efx)
@@ -593,8 +633,8 @@ void __efx_reconfigure_port(struct efx_nic *efx)
fail:
EFX_ERR(efx, "failed to reconfigure MAC\n");
- efx->phy_op->fini(efx);
- efx->port_initialized = false;
+ efx->port_enabled = false;
+ efx_fini_port(efx);
}
/* Reinitialise the MAC to pick up new PHY settings, even if the port is
@@ -854,20 +894,27 @@ static void efx_fini_io(struct efx_nic *efx)
* interrupts across them. */
static int efx_wanted_rx_queues(void)
{
- cpumask_t core_mask;
+ cpumask_var_t core_mask;
int count;
int cpu;
- cpus_clear(core_mask);
+ if (!alloc_cpumask_var(&core_mask, GFP_KERNEL)) {
+ printk(KERN_WARNING
+ "efx.c: allocation failure, irq balancing hobbled\n");
+ return 1;
+ }
+
+ cpumask_clear(core_mask);
count = 0;
for_each_online_cpu(cpu) {
- if (!cpu_isset(cpu, core_mask)) {
+ if (!cpumask_test_cpu(cpu, core_mask)) {
++count;
- cpus_or(core_mask, core_mask,
- topology_core_siblings(cpu));
+ cpumask_or(core_mask, core_mask,
+ topology_core_cpumask(cpu));
}
}
+ free_cpumask_var(core_mask);
return count;
}
@@ -990,7 +1037,7 @@ static int efx_probe_nic(struct efx_nic *efx)
efx_set_channels(efx);
/* Initialise the interrupt moderation settings */
- efx_init_irq_moderation(efx, tx_irq_mod_usec, rx_irq_mod_usec);
+ efx_init_irq_moderation(efx, tx_irq_mod_usec, rx_irq_mod_usec, true);
return 0;
}
@@ -1187,7 +1234,8 @@ void efx_flush_queues(struct efx_nic *efx)
**************************************************************************/
/* Set interrupt moderation parameters */
-void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs, int rx_usecs)
+void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs, int rx_usecs,
+ bool rx_adaptive)
{
struct efx_tx_queue *tx_queue;
struct efx_rx_queue *rx_queue;
@@ -1197,6 +1245,8 @@ void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs, int rx_usecs)
efx_for_each_tx_queue(tx_queue, efx)
tx_queue->channel->irq_moderation = tx_usecs;
+ efx->irq_rx_adaptive = rx_adaptive;
+ efx->irq_rx_moderation = rx_usecs;
efx_for_each_rx_queue(rx_queue, efx)
rx_queue->channel->irq_moderation = rx_usecs;
}
@@ -1269,18 +1319,11 @@ static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
static int efx_init_napi(struct efx_nic *efx)
{
struct efx_channel *channel;
- int rc;
efx_for_each_channel(channel, efx) {
channel->napi_dev = efx->net_dev;
- rc = efx_lro_init(&channel->lro_mgr, efx);
- if (rc)
- goto err;
}
return 0;
- err:
- efx_fini_napi(efx);
- return rc;
}
static void efx_fini_napi(struct efx_nic *efx)
@@ -1288,7 +1331,6 @@ static void efx_fini_napi(struct efx_nic *efx)
struct efx_channel *channel;
efx_for_each_channel(channel, efx) {
- efx_lro_fini(&channel->lro_mgr);
channel->napi_dev = NULL;
}
}
@@ -1676,7 +1718,8 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method,
rc = efx->phy_op->init(efx);
if (rc)
ok = false;
- } else
+ }
+ if (!ok)
efx->port_initialized = false;
}
@@ -1857,8 +1900,8 @@ static struct efx_phy_operations efx_dummy_phy_operations = {
static struct efx_board efx_dummy_board_info = {
.init = efx_port_dummy_op_int,
- .init_leds = efx_port_dummy_op_int,
- .set_fault_led = efx_port_dummy_op_blink,
+ .init_leds = efx_port_dummy_op_void,
+ .set_id_led = efx_port_dummy_op_blink,
.monitor = efx_port_dummy_op_int,
.blink = efx_port_dummy_op_blink,
.fini = efx_port_dummy_op_void,
@@ -2120,7 +2163,7 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
net_dev->features |= (NETIF_F_IP_CSUM | NETIF_F_SG |
NETIF_F_HIGHDMA | NETIF_F_TSO);
if (lro)
- net_dev->features |= NETIF_F_LRO;
+ net_dev->features |= NETIF_F_GRO;
/* Mask for features that also apply to VLAN devices */
net_dev->vlan_features |= (NETIF_F_ALL_CSUM | NETIF_F_SG |
NETIF_F_HIGHDMA | NETIF_F_TSO);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 06:50:57 +0300