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-rw-r--r--drivers/net/s2io.c206
-rw-r--r--drivers/net/s2io.h10
2 files changed, 186 insertions, 30 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index c72787adeba..3ddc0aae60b 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -50,6 +50,8 @@
* Possible values '1' for enable , '0' for disable.
* Default is '2' - which means disable in promisc mode
* and enable in non-promiscuous mode.
+ * multiq: This parameter used to enable/disable MULTIQUEUE support.
+ * Possible values '1' for enable and '0' for disable. Default is '0'
************************************************************************/
#include <linux/module.h>
@@ -458,8 +460,7 @@ MODULE_VERSION(DRV_VERSION);
/* Module Loadable parameters. */
S2IO_PARM_INT(tx_fifo_num, 1);
S2IO_PARM_INT(rx_ring_num, 1);
-
-
+S2IO_PARM_INT(multiq, 0);
S2IO_PARM_INT(rx_ring_mode, 1);
S2IO_PARM_INT(use_continuous_tx_intrs, 1);
S2IO_PARM_INT(rmac_pause_time, 0x100);
@@ -533,6 +534,101 @@ static struct pci_driver s2io_driver = {
/* A simplifier macro used both by init and free shared_mem Fns(). */
#define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each)
+/* netqueue manipulation helper functions */
+static inline void s2io_stop_all_tx_queue(struct s2io_nic *sp)
+{
+ int i;
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq) {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ netif_stop_subqueue(sp->dev, i);
+ } else
+#endif
+ {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_STOP;
+ netif_stop_queue(sp->dev);
+ }
+}
+
+static inline void s2io_stop_tx_queue(struct s2io_nic *sp, int fifo_no)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq)
+ netif_stop_subqueue(sp->dev, fifo_no);
+ else
+#endif
+ {
+ sp->mac_control.fifos[fifo_no].queue_state =
+ FIFO_QUEUE_STOP;
+ netif_stop_queue(sp->dev);
+ }
+}
+
+static inline void s2io_start_all_tx_queue(struct s2io_nic *sp)
+{
+ int i;
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq) {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ netif_start_subqueue(sp->dev, i);
+ } else
+#endif
+ {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
+ netif_start_queue(sp->dev);
+ }
+}
+
+static inline void s2io_start_tx_queue(struct s2io_nic *sp, int fifo_no)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq)
+ netif_start_subqueue(sp->dev, fifo_no);
+ else
+#endif
+ {
+ sp->mac_control.fifos[fifo_no].queue_state =
+ FIFO_QUEUE_START;
+ netif_start_queue(sp->dev);
+ }
+}
+
+static inline void s2io_wake_all_tx_queue(struct s2io_nic *sp)
+{
+ int i;
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq) {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ netif_wake_subqueue(sp->dev, i);
+ } else
+#endif
+ {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
+ netif_wake_queue(sp->dev);
+ }
+}
+
+static inline void s2io_wake_tx_queue(
+ struct fifo_info *fifo, int cnt, u8 multiq)
+{
+
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (multiq) {
+ if (cnt && __netif_subqueue_stopped(fifo->dev, fifo->fifo_no))
+ netif_wake_subqueue(fifo->dev, fifo->fifo_no);
+ } else
+#endif
+ if (cnt && (fifo->queue_state == FIFO_QUEUE_STOP)) {
+ if (netif_queue_stopped(fifo->dev)) {
+ fifo->queue_state = FIFO_QUEUE_START;
+ netif_wake_queue(fifo->dev);
+ }
+ }
+}
+
/**
* init_shared_mem - Allocation and Initialization of Memory
* @nic: Device private variable.
@@ -614,6 +710,7 @@ static int init_shared_mem(struct s2io_nic *nic)
mac_control->fifos[i].fifo_no = i;
mac_control->fifos[i].nic = nic;
mac_control->fifos[i].max_txds = MAX_SKB_FRAGS + 2;
+ mac_control->fifos[i].dev = dev;
for (j = 0; j < page_num; j++) {
int k = 0;
@@ -2972,10 +3069,10 @@ static void rx_intr_handler(struct ring_info *ring_data)
static void tx_intr_handler(struct fifo_info *fifo_data)
{
struct s2io_nic *nic = fifo_data->nic;
- struct net_device *dev = (struct net_device *) nic->dev;
struct tx_curr_get_info get_info, put_info;
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
struct TxD *txdlp;
+ int pkt_cnt = 0;
unsigned long flags = 0;
u8 err_mask;
@@ -3036,6 +3133,7 @@ static void tx_intr_handler(struct fifo_info *fifo_data)
DBG_PRINT(ERR_DBG, "in Tx Free Intr\n");
return;
}
+ pkt_cnt++;
/* Updating the statistics block */
nic->stats.tx_bytes += skb->len;
@@ -3051,8 +3149,7 @@ static void tx_intr_handler(struct fifo_info *fifo_data)
get_info.offset;
}
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
+ s2io_wake_tx_queue(fifo_data, pkt_cnt, nic->config.multiq);
spin_unlock_irqrestore(&fifo_data->tx_lock, flags);
}
@@ -3933,8 +4030,7 @@ static int s2io_open(struct net_device *dev)
err = -ENODEV;
goto hw_init_failed;
}
-
- netif_start_queue(dev);
+ s2io_start_all_tx_queue(sp);
return 0;
hw_init_failed:
@@ -3979,8 +4075,7 @@ static int s2io_close(struct net_device *dev)
if (!is_s2io_card_up(sp))
return 0;
- netif_stop_queue(dev);
-
+ s2io_stop_all_tx_queue(sp);
/* delete all populated mac entries */
for (offset = 1; offset < config->max_mc_addr; offset++) {
tmp64 = do_s2io_read_unicast_mc(sp, offset);
@@ -4016,7 +4111,6 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
struct TxFIFO_element __iomem *tx_fifo;
unsigned long flags = 0;
u16 vlan_tag = 0;
- int vlan_priority = 0;
struct fifo_info *fifo = NULL;
struct mac_info *mac_control;
struct config_param *config;
@@ -4043,14 +4137,29 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
queue = 0;
/* Get Fifo number to Transmit based on vlan priority */
- if (sp->vlgrp && vlan_tx_tag_present(skb)) {
+ if (sp->vlgrp && vlan_tx_tag_present(skb))
vlan_tag = vlan_tx_tag_get(skb);
- vlan_priority = vlan_tag >> 13;
- queue = config->fifo_mapping[vlan_priority];
- }
+
+ /* get fifo number based on skb->priority value */
+ queue = config->fifo_mapping[skb->priority & (MAX_TX_FIFOS - 1)];
fifo = &mac_control->fifos[queue];
spin_lock_irqsave(&fifo->tx_lock, flags);
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (sp->config.multiq) {
+ if (__netif_subqueue_stopped(dev, fifo->fifo_no)) {
+ spin_unlock_irqrestore(&fifo->tx_lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ } else
+#endif
+ if (unlikely(fifo->queue_state == FIFO_QUEUE_STOP)) {
+ if (netif_queue_stopped(dev)) {
+ spin_unlock_irqrestore(&fifo->tx_lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ }
+
put_off = (u16) fifo->tx_curr_put_info.offset;
get_off = (u16) fifo->tx_curr_get_info.offset;
txdp = (struct TxD *) fifo->list_info[put_off].list_virt_addr;
@@ -4060,7 +4169,7 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
if (txdp->Host_Control ||
((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
- netif_stop_queue(dev);
+ s2io_stop_tx_queue(sp, fifo->fifo_no);
dev_kfree_skb(skb);
spin_unlock_irqrestore(&fifo->tx_lock, flags);
return 0;
@@ -4080,7 +4189,7 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
txdp->Control_1 |= TXD_LIST_OWN_XENA;
txdp->Control_2 |= TXD_INT_NUMBER(fifo->fifo_no);
- if (sp->vlgrp && vlan_tx_tag_present(skb)) {
+ if (vlan_tag) {
txdp->Control_2 |= TXD_VLAN_ENABLE;
txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
}
@@ -4166,7 +4275,7 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
DBG_PRINT(TX_DBG,
"No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
put_off, get_off);
- netif_stop_queue(dev);
+ s2io_stop_tx_queue(sp, fifo->fifo_no);
}
mac_control->stats_info->sw_stat.mem_allocated += skb->truesize;
dev->trans_start = jiffies;
@@ -4175,7 +4284,7 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
pci_map_failed:
stats->pci_map_fail_cnt++;
- netif_stop_queue(dev);
+ s2io_stop_tx_queue(sp, fifo->fifo_no);
stats->mem_freed += skb->truesize;
dev_kfree_skb(skb);
spin_unlock_irqrestore(&fifo->tx_lock, flags);
@@ -4587,7 +4696,7 @@ static void s2io_handle_errors(void * dev_id)
return;
reset:
- netif_stop_queue(dev);
+ s2io_stop_all_tx_queue(sp);
schedule_work(&sp->rst_timer_task);
sw_stat->soft_reset_cnt++;
return;
@@ -6574,16 +6683,15 @@ static int s2io_change_mtu(struct net_device *dev, int new_mtu)
dev->mtu = new_mtu;
if (netif_running(dev)) {
+ s2io_stop_all_tx_queue(sp);
s2io_card_down(sp);
- netif_stop_queue(dev);
ret = s2io_card_up(sp);
if (ret) {
DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
__FUNCTION__);
return ret;
}
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
+ s2io_wake_all_tx_queue(sp);
} else { /* Device is down */
struct XENA_dev_config __iomem *bar0 = sp->bar0;
u64 val64 = new_mtu;
@@ -6691,7 +6799,7 @@ static void s2io_set_link(struct work_struct *work)
} else {
DBG_PRINT(ERR_DBG, "%s: Error: ", dev->name);
DBG_PRINT(ERR_DBG, "device is not Quiescent\n");
- netif_stop_queue(dev);
+ s2io_stop_all_tx_queue(nic);
}
}
val64 = readq(&bar0->adapter_control);
@@ -7181,7 +7289,7 @@ static void s2io_restart_nic(struct work_struct *work)
DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
dev->name);
}
- netif_wake_queue(dev);
+ s2io_wake_all_tx_queue(sp);
DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n",
dev->name);
out_unlock:
@@ -7460,6 +7568,7 @@ static void s2io_link(struct s2io_nic * sp, int link)
init_tti(sp, link);
if (link == LINK_DOWN) {
DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
+ s2io_stop_all_tx_queue(sp);
netif_carrier_off(dev);
if(sp->mac_control.stats_info->sw_stat.link_up_cnt)
sp->mac_control.stats_info->sw_stat.link_up_time =
@@ -7472,6 +7581,7 @@ static void s2io_link(struct s2io_nic * sp, int link)
jiffies - sp->start_time;
sp->mac_control.stats_info->sw_stat.link_up_cnt++;
netif_carrier_on(dev);
+ s2io_wake_all_tx_queue(sp);
}
}
sp->last_link_state = link;
@@ -7508,7 +7618,8 @@ static void s2io_init_pci(struct s2io_nic * sp)
pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
}
-static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
+static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type,
+ u8 *dev_multiq)
{
if ((tx_fifo_num > MAX_TX_FIFOS) ||
(tx_fifo_num < FIFO_DEFAULT_NUM)) {
@@ -7522,6 +7633,18 @@ static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
DBG_PRINT(ERR_DBG, "tx fifos\n");
}
+#ifndef CONFIG_NETDEVICES_MULTIQUEUE
+ if (multiq) {
+ DBG_PRINT(ERR_DBG, "s2io: Multiqueue support not enabled\n");
+ multiq = 0;
+ }
+#endif
+ /* if multiqueue is enabled configure all fifos */
+ if (multiq) {
+ tx_fifo_num = MAX_TX_FIFOS;
+ *dev_multiq = multiq;
+ }
+
if ( rx_ring_num > 8) {
DBG_PRINT(ERR_DBG, "s2io: Requested number of Rx rings not "
"supported\n");
@@ -7613,9 +7736,11 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
struct config_param *config;
int mode;
u8 dev_intr_type = intr_type;
+ u8 dev_multiq = 0;
DECLARE_MAC_BUF(mac);
- if ((ret = s2io_verify_parm(pdev, &dev_intr_type)))
+ ret = s2io_verify_parm(pdev, &dev_intr_type, &dev_multiq);
+ if (ret)
return ret;
if ((ret = pci_enable_device(pdev))) {
@@ -7646,7 +7771,11 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
pci_disable_device(pdev);
return -ENODEV;
}
-
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (dev_multiq)
+ dev = alloc_etherdev_mq(sizeof(struct s2io_nic), MAX_TX_FIFOS);
+ else
+#endif
dev = alloc_etherdev(sizeof(struct s2io_nic));
if (dev == NULL) {
DBG_PRINT(ERR_DBG, "Device allocation failed\n");
@@ -7698,6 +7827,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
/* Tx side parameters. */
config->tx_fifo_num = tx_fifo_num;
+ config->multiq = dev_multiq;
for (i = 0; i < MAX_TX_FIFOS; i++) {
config->tx_cfg[i].fifo_len = tx_fifo_len[i];
config->tx_cfg[i].fifo_priority = i;
@@ -7705,7 +7835,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
/* mapping the QoS priority to the configured fifos */
for (i = 0; i < MAX_TX_FIFOS; i++)
- config->fifo_mapping[i] = fifo_map[config->tx_fifo_num][i];
+ config->fifo_mapping[i] = fifo_map[config->tx_fifo_num - 1][i];
config->tx_intr_type = TXD_INT_TYPE_UTILZ;
for (i = 0; i < config->tx_fifo_num; i++) {
@@ -7810,7 +7940,10 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
dev->features |= NETIF_F_UFO;
dev->features |= NETIF_F_HW_CSUM;
}
-
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ if (config->multiq)
+ dev->features |= NETIF_F_MULTI_QUEUE;
+#endif
dev->tx_timeout = &s2io_tx_watchdog;
dev->watchdog_timeo = WATCH_DOG_TIMEOUT;
INIT_WORK(&sp->rst_timer_task, s2io_restart_nic);
@@ -7959,6 +8092,10 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
if (napi)
DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
+
+ DBG_PRINT(ERR_DBG, "%s: Using %d Tx fifo(s)\n", dev->name,
+ sp->config.tx_fifo_num);
+
switch(sp->config.intr_type) {
case INTA:
DBG_PRINT(ERR_DBG, "%s: Interrupt type INTA\n", dev->name);
@@ -7967,6 +8104,15 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
DBG_PRINT(ERR_DBG, "%s: Interrupt type MSI-X\n", dev->name);
break;
}
+ if (sp->config.multiq) {
+ for (i = 0; i < sp->config.tx_fifo_num; i++)
+ mac_control->fifos[i].multiq = config->multiq;
+ DBG_PRINT(ERR_DBG, "%s: Multiqueue support enabled\n",
+ dev->name);
+ } else
+ DBG_PRINT(ERR_DBG, "%s: Multiqueue support disabled\n",
+ dev->name);
+
if (sp->lro)
DBG_PRINT(ERR_DBG, "%s: Large receive offload enabled\n",
dev->name);
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 64b88eb4828..fdc0a94d0a8 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -464,6 +464,7 @@ struct config_param {
int max_mc_addr; /* xena=64 herc=256 */
int max_mac_addr; /* xena=16 herc=64 */
int mc_start_offset; /* xena=16 herc=64 */
+ u8 multiq;
};
/* Structure representing MAC Addrs */
@@ -720,6 +721,15 @@ struct fifo_info {
* the buffers
*/
struct tx_curr_get_info tx_curr_get_info;
+#define FIFO_QUEUE_START 0
+#define FIFO_QUEUE_STOP 1
+ int queue_state;
+
+ /* copy of sp->dev pointer */
+ struct net_device *dev;
+
+ /* copy of multiq status */
+ u8 multiq;
/* Per fifo lock */
spinlock_t tx_lock;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 13:54:57 +0000