OpenSDV
/
linux-stable-rt
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[PATCH] e1000: Fix mulitple queues 

Fixed stats when using multiple queues.
When multiple queues are enabled, log a message in syslog.
Fixed memory allocation for multiple queues.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Jeff Kirsher 2006-01-12 16:50:41 -08:00 committed by Jeff Garzik
parent f56799ea39
commit 7bfa48162d
3 changed files with 120 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/net/e1000/e1000.h
View File

@ -72,10 +72,6 @@
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#ifdef CONFIG_E1000_MQ
#include <linux/cpu.h>
#include <linux/smp.h>
#endif
#define BAR_0 0
#define BAR_1 1
@ -87,6 +83,10 @@
struct e1000_adapter;
#include "e1000_hw.h"
#ifdef CONFIG_E1000_MQ
#include <linux/cpu.h>
#include <linux/smp.h>
#endif
#ifdef DBG
#define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
@ -169,6 +169,13 @@ struct e1000_buffer {
uint16_t next_to_watch;
};
#ifdef CONFIG_E1000_MQ
struct e1000_queue_stats {
uint64_t packets;
uint64_t bytes;
};
#endif
struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
@ -194,6 +201,9 @@ struct e1000_tx_ring {
boolean_t last_tx_tso;
#ifdef CONFIG_E1000_MQ
struct e1000_queue_stats tx_stats;
#endif
};
struct e1000_rx_ring {
@ -223,6 +233,9 @@ struct e1000_rx_ring {
uint16_t rdh;
uint16_t rdt;
#ifdef CONFIG_E1000_MQ
struct e1000_queue_stats rx_stats;
#endif
};
#define E1000_DESC_UNUSED(R) \
@ -255,6 +268,9 @@ struct e1000_adapter {
uint16_t link_speed;
uint16_t link_duplex;
spinlock_t stats_lock;
#ifdef CONFIG_E1000_NAPI
spinlock_t tx_queue_lock;
#endif
atomic_t irq_sem;
struct work_struct tx_timeout_task;
struct work_struct watchdog_task;
@ -302,7 +318,7 @@ struct e1000_adapter {
#ifdef CONFIG_E1000_MQ
struct net_device **cpu_netdev; /* per-cpu */
struct call_async_data_struct rx_sched_call_data;
int cpu_for_queue[4];
cpumask_t cpumask;
#endif
int num_tx_queues;
int num_rx_queues;

65
drivers/net/e1000/e1000_ethtool.c
View File

@ -96,8 +96,18 @@ static const struct e1000_stats e1000_gstrings_stats[] = {
{ "rx_header_split", E1000_STAT(rx_hdr_split) },
{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },
};
#define E1000_STATS_LEN \
#ifdef CONFIG_E1000_MQ
#define E1000_QUEUE_STATS_LEN \
(((struct e1000_adapter *)netdev->priv)->num_tx_queues + \
((struct e1000_adapter *)netdev->priv)->num_rx_queues) \
* (sizeof(struct e1000_queue_stats) / sizeof(uint64_t))
#else
#define E1000_QUEUE_STATS_LEN 0
#endif
#define E1000_GLOBAL_STATS_LEN \
sizeof(e1000_gstrings_stats) / sizeof(struct e1000_stats)
#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN + E1000_QUEUE_STATS_LEN)
static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
"Register test (offline)", "Eeprom test (offline)",
"Interrupt test (offline)", "Loopback test (offline)",
@ -1746,19 +1756,43 @@ e1000_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, uint64_t *data)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
#ifdef CONFIG_E1000_MQ
uint64_t *queue_stat;
int stat_count = sizeof(struct e1000_queue_stats) / sizeof(uint64_t);
int j, k;
#endif
int i;
e1000_update_stats(adapter);
for(i = 0; i < E1000_STATS_LEN; i++) {
char *p = (char *)adapter+e1000_gstrings_stats[i].stat_offset;
data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
char *p = (char *)adapter+e1000_gstrings_stats[i].stat_offset;
data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
}
#ifdef CONFIG_E1000_MQ
for (j = 0; j < adapter->num_tx_queues; j++) {
queue_stat = (uint64_t *)&adapter->tx_ring[j].tx_stats;
for (k = 0; k < stat_count; k++)
data[i + k] = queue_stat[k];
i += k;
}
for (j = 0; j < adapter->num_rx_queues; j++) {
queue_stat = (uint64_t *)&adapter->rx_ring[j].rx_stats;
for (k = 0; k < stat_count; k++)
data[i + k] = queue_stat[k];
i += k;
}
#endif
/* BUG_ON(i != E1000_STATS_LEN); */
}
static void
e1000_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data)
{
#ifdef CONFIG_E1000_MQ
struct e1000_adapter *adapter = netdev_priv(netdev);
#endif
uint8_t *p = data;
int i;
switch(stringset) {
@ -1767,11 +1801,26 @@ e1000_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data)
E1000_TEST_LEN*ETH_GSTRING_LEN);
break;
case ETH_SS_STATS:
for (i=0; i < E1000_STATS_LEN; i++) {
memcpy(data + i * ETH_GSTRING_LEN,
e1000_gstrings_stats[i].stat_string,
ETH_GSTRING_LEN);
for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
memcpy(p, e1000_gstrings_stats[i].stat_string,
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
#ifdef CONFIG_E1000_MQ
for (i = 0; i < adapter->num_tx_queues; i++) {
sprintf(p, "tx_queue_%u_packets", i);
p += ETH_GSTRING_LEN;
sprintf(p, "tx_queue_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < adapter->num_rx_queues; i++) {
sprintf(p, "rx_queue_%u_packets", i);
p += ETH_GSTRING_LEN;
sprintf(p, "rx_queue_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
#endif
/* BUG_ON(p - data != E1000_STATS_LEN * ETH_GSTRING_LEN); */
break;
}
}

47
drivers/net/e1000/e1000_main.c
View File

@ -433,6 +433,12 @@ e1000_up(struct e1000_adapter *adapter)
return err;
}
#ifdef CONFIG_E1000_MQ
e1000_setup_queue_mapping(adapter);
#endif
adapter->tx_queue_len = netdev->tx_queue_len;
mod_timer(&adapter->watchdog_timer, jiffies);
#ifdef CONFIG_E1000_NAPI
@ -467,6 +473,7 @@ e1000_down(struct e1000_adapter *adapter)
#ifdef CONFIG_E1000_NAPI
netif_poll_disable(netdev);
#endif
netdev->tx_queue_len = adapter->tx_queue_len;
adapter->link_speed = 0;
adapter->link_duplex = 0;
netif_carrier_off(netdev);
@ -989,6 +996,15 @@ e1000_sw_init(struct e1000_adapter *adapter)
}
adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus());
adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus());
DPRINTK(DRV, INFO, "Multiqueue Enabled: Rx Queue count = %u %s\n",
adapter->num_rx_queues,
((adapter->num_rx_queues == 1)
? ((num_online_cpus() > 1)
? "(due to unsupported feature in current adapter)"
: "(due to unsupported system configuration)")
: ""));
DPRINTK(DRV, INFO, "Multiqueue Enabled: Tx Queue count = %u\n",
adapter->num_tx_queues);
#else
adapter->num_tx_queues = 1;
adapter->num_rx_queues = 1;
@ -1007,10 +1023,7 @@ e1000_sw_init(struct e1000_adapter *adapter)
dev_hold(&adapter->polling_netdev[i]);
set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
}
#endif
#ifdef CONFIG_E1000_MQ
e1000_setup_queue_mapping(adapter);
spin_lock_init(&adapter->tx_queue_lock);
#endif
atomic_set(&adapter->irq_sem, 1);
@ -1058,6 +1071,14 @@ e1000_alloc_queues(struct e1000_adapter *adapter)
memset(adapter->polling_netdev, 0, size);
#endif
#ifdef CONFIG_E1000_MQ
adapter->rx_sched_call_data.func = e1000_rx_schedule;
adapter->rx_sched_call_data.info = adapter->netdev;
adapter->cpu_netdev = alloc_percpu(struct net_device *);
adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *);
#endif
return E1000_SUCCESS;
}
@ -1084,7 +1105,8 @@ e1000_setup_queue_mapping(struct e1000_adapter *adapter)
*/
if (i < adapter->num_rx_queues) {
*per_cpu_ptr(adapter->cpu_netdev, cpu) = &adapter->polling_netdev[i];
adapter->cpu_for_queue[i] = cpu;
adapter->rx_ring[i].cpu = cpu;
cpu_set(cpu, adapter->cpumask);
} else
*per_cpu_ptr(adapter->cpu_netdev, cpu) = NULL;
@ -3337,6 +3359,10 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
if(unlikely(++i == tx_ring->count)) i = 0;
}
#ifdef CONFIG_E1000_MQ
tx_ring->tx_stats.packets++;
#endif
eop = tx_ring->buffer_info[i].next_to_watch;
eop_desc = E1000_TX_DESC(*tx_ring, eop);
}
@ -3365,6 +3391,7 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
eop = tx_ring->buffer_info[i].next_to_watch;
eop_desc = E1000_TX_DESC(*tx_ring, eop);
DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
" Tx Queue <%lu>\n"
" TDH <%x>\n"
" TDT <%x>\n"
" next_to_use <%x>\n"
@ -3375,6 +3402,8 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter,
" next_to_watch <%x>\n"
" jiffies <%lx>\n"
" next_to_watch.status <%x>\n",
(unsigned long)((tx_ring - adapter->tx_ring) /
sizeof(struct e1000_tx_ring)),
readl(adapter->hw.hw_addr + tx_ring->tdh),
readl(adapter->hw.hw_addr + tx_ring->tdt),
tx_ring->next_to_use,
@ -3541,6 +3570,10 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
}
#endif /* CONFIG_E1000_NAPI */
netdev->last_rx = jiffies;
#ifdef CONFIG_E1000_MQ
rx_ring->rx_stats.packets++;
rx_ring->rx_stats.bytes += length;
#endif
next_desc:
rx_desc->status = 0;
@ -3671,6 +3704,10 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
}
#endif /* CONFIG_E1000_NAPI */
netdev->last_rx = jiffies;
#ifdef CONFIG_E1000_MQ
rx_ring->rx_stats.packets++;
rx_ring->rx_stats.bytes += length;
#endif
next_desc:
rx_desc->wb.middle.status_error &= ~0xFF;