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ixgbe: Enable Flow Director hashing in 82599

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This patch enables Flow Director's ATR functionality to the main base
driver for 82599.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Acked-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter P Waskiewicz Jr 2009-06-04 16:01:43 +00:00 • committed by David S. Miller
parent ffff477203
commit c4cf55e5d2
3 changed files with 228 additions and 1 deletions
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12
drivers/net/ixgbe/ixgbe.h
View file

@ -126,6 +126,8 @@ struct ixgbe_ring {
unsigned int count; /* amount of descriptors */
unsigned int next_to_use;
unsigned int next_to_clean;
u8 atr_sample_rate;
u8 atr_count;
int queue_index; /* needed for multiqueue queue management */
union {
@ -148,6 +150,7 @@ struct ixgbe_ring {
int cpu;
#endif
struct ixgbe_queue_stats stats;
unsigned long reinit_state;
u16 work_limit; /* max work per interrupt */
u16 rx_buf_len;
@ -159,6 +162,7 @@ enum ixgbe_ring_f_enum {
RING_F_DCB,
RING_F_VMDQ,
RING_F_RSS,
RING_F_FDIR,
#ifdef IXGBE_FCOE
RING_F_FCOE,
#endif /* IXGBE_FCOE */
@ -169,6 +173,7 @@ enum ixgbe_ring_f_enum {
#define IXGBE_MAX_DCB_INDICES 8
#define IXGBE_MAX_RSS_INDICES 16
#define IXGBE_MAX_VMDQ_INDICES 16
#define IXGBE_MAX_FDIR_INDICES 64
#ifdef IXGBE_FCOE
#define IXGBE_MAX_FCOE_INDICES 8
#endif /* IXGBE_FCOE */
@ -317,6 +322,8 @@ struct ixgbe_adapter {
#define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 23)
#define IXGBE_FLAG_IN_SFP_LINK_TASK (u32)(1 << 24)
#define IXGBE_FLAG_IN_SFP_MOD_TASK (u32)(1 << 25)
#define IXGBE_FLAG_FDIR_HASH_CAPABLE (u32)(1 << 26)
#define IXGBE_FLAG_FDIR_PERFECT_CAPABLE (u32)(1 << 27)
#define IXGBE_FLAG_FCOE_ENABLED (u32)(1 << 29)
u32 flags2;
@ -356,6 +363,10 @@ struct ixgbe_adapter {
struct timer_list sfp_timer;
struct work_struct multispeed_fiber_task;
struct work_struct sfp_config_module_task;
u32 fdir_pballoc;
u32 atr_sample_rate;
spinlock_t fdir_perfect_lock;
struct work_struct fdir_reinit_task;
#ifdef IXGBE_FCOE
struct ixgbe_fcoe fcoe;
#endif /* IXGBE_FCOE */
@ -368,6 +379,7 @@ enum ixbge_state_t {
__IXGBE_TESTING,
__IXGBE_RESETTING,
__IXGBE_DOWN,
__IXGBE_FDIR_INIT_DONE,
__IXGBE_SFP_MODULE_NOT_FOUND
};

2
drivers/net/ixgbe/ixgbe_ethtool.c
View file

@ -68,6 +68,8 @@ static struct ixgbe_stats ixgbe_gstrings_stats[] = {
{"rx_crc_errors", IXGBE_STAT(net_stats.rx_crc_errors)},
{"rx_frame_errors", IXGBE_STAT(net_stats.rx_frame_errors)},
{"hw_rsc_count", IXGBE_STAT(rsc_count)},
{"fdir_match", IXGBE_STAT(stats.fdirmatch)},
{"fdir_miss", IXGBE_STAT(stats.fdirmiss)},
{"rx_fifo_errors", IXGBE_STAT(net_stats.rx_fifo_errors)},
{"rx_missed_errors", IXGBE_STAT(net_stats.rx_missed_errors)},
{"tx_aborted_errors", IXGBE_STAT(net_stats.tx_aborted_errors)},

215
drivers/net/ixgbe/ixgbe_main.c
View file

@ -1123,8 +1123,24 @@ static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
if (hw->mac.type == ixgbe_mac_82598EB)
ixgbe_check_fan_failure(adapter, eicr);
if (hw->mac.type == ixgbe_mac_82599EB)
if (hw->mac.type == ixgbe_mac_82599EB) {
ixgbe_check_sfp_event(adapter, eicr);
/* Handle Flow Director Full threshold interrupt */
if (eicr & IXGBE_EICR_FLOW_DIR) {
int i;
IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
/* Disable transmits before FDIR Re-initialization */
netif_tx_stop_all_queues(netdev);
for (i = 0; i < adapter->num_tx_queues; i++) {
struct ixgbe_ring *tx_ring =
&adapter->tx_ring[i];
if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
&tx_ring->reinit_state))
schedule_work(&adapter->fdir_reinit_task);
}
}
}
if (!test_bit(__IXGBE_DOWN, &adapter->state))
IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
@ -1623,6 +1639,9 @@ static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
mask |= IXGBE_EIMS_GPI_SDP1;
mask |= IXGBE_EIMS_GPI_SDP2;
}
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
mask |= IXGBE_EIMS_FLOW_DIR;
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
ixgbe_irq_enable_queues(adapter, ~0);
@ -2376,6 +2395,7 @@ static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
static void ixgbe_configure(struct ixgbe_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct ixgbe_hw *hw = &adapter->hw;
int i;
ixgbe_set_rx_mode(netdev);
@ -2397,6 +2417,15 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter)
ixgbe_configure_fcoe(adapter);
#endif /* IXGBE_FCOE */
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
for (i = 0; i < adapter->num_tx_queues; i++)
adapter->tx_ring[i].atr_sample_rate =
adapter->atr_sample_rate;
ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
} else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
}
ixgbe_configure_tx(adapter);
ixgbe_configure_rx(adapter);
for (i = 0; i < adapter->num_rx_queues; i++)
@ -2653,6 +2682,10 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
DPRINTK(PROBE, ERR, "link_config FAILED %d\n", err);
}
for (i = 0; i < adapter->num_tx_queues; i++)
set_bit(__IXGBE_FDIR_INIT_DONE,
&(adapter->tx_ring[i].reinit_state));
/* enable transmits */
netif_tx_start_all_queues(netdev);
@ -2848,6 +2881,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
del_timer_sync(&adapter->watchdog_timer);
cancel_work_sync(&adapter->watchdog_task);
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
cancel_work_sync(&adapter->fdir_reinit_task);
/* disable transmits in the hardware now that interrupts are off */
for (i = 0; i < adapter->num_tx_queues; i++) {
j = adapter->tx_ring[i].reg_idx;
@ -2982,6 +3019,38 @@ static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
return ret;
}
/**
* ixgbe_set_fdir_queues: Allocate queues for Flow Director
* @adapter: board private structure to initialize
*
* Flow Director is an advanced Rx filter, attempting to get Rx flows back
* to the original CPU that initiated the Tx session. This runs in addition
* to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
* Rx load across CPUs using RSS.
*
**/
static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
{
bool ret = false;
struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
f_fdir->mask = 0;
/* Flow Director must have RSS enabled */
if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
adapter->num_tx_queues = f_fdir->indices;
adapter->num_rx_queues = f_fdir->indices;
ret = true;
} else {
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
}
return ret;
}
#ifdef IXGBE_FCOE
/**
* ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
@ -3046,6 +3115,9 @@ static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
goto done;
#endif
if (ixgbe_set_fdir_queues(adapter))
goto done;
if (ixgbe_set_rss_queues(adapter))
goto done;
@ -3216,6 +3288,31 @@ static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
}
#endif
/**
* ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
* @adapter: board private structure to initialize
*
* Cache the descriptor ring offsets for Flow Director to the assigned rings.
*
**/
static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
{
int i;
bool ret = false;
if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
for (i = 0; i < adapter->num_rx_queues; i++)
adapter->rx_ring[i].reg_idx = i;
for (i = 0; i < adapter->num_tx_queues; i++)
adapter->tx_ring[i].reg_idx = i;
ret = true;
}
return ret;
}
#ifdef IXGBE_FCOE
/**
* ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
@ -3276,6 +3373,9 @@ static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
return;
#endif
if (ixgbe_cache_ring_fdir(adapter))
return;
if (ixgbe_cache_ring_rss(adapter))
return;
}
@ -3369,6 +3469,9 @@ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
adapter->atr_sample_rate = 0;
ixgbe_set_num_queues(adapter);
err = pci_enable_msi(adapter->pdev);
@ -3634,6 +3737,11 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
adapter->flags |= IXGBE_FLAG2_RSC_CAPABLE;
adapter->flags |= IXGBE_FLAG2_RSC_ENABLED;
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->ring_feature[RING_F_FDIR].indices =
IXGBE_MAX_FDIR_INDICES;
adapter->atr_sample_rate = 20;
adapter->fdir_pballoc = 0;
#ifdef IXGBE_FCOE
adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices = IXGBE_FCRETA_SIZE;
@ -4223,6 +4331,8 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
adapter->stats.fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
adapter->stats.fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
#ifdef IXGBE_FCOE
adapter->stats.fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
adapter->stats.fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
@ -4387,6 +4497,30 @@ static void ixgbe_sfp_config_module_task(struct work_struct *work)
adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
}
/**
* ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
* @work: pointer to work_struct containing our data
**/
static void ixgbe_fdir_reinit_task(struct work_struct *work)
{
struct ixgbe_adapter *adapter = container_of(work,
struct ixgbe_adapter,
fdir_reinit_task);
struct ixgbe_hw *hw = &adapter->hw;
int i;
if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
for (i = 0; i < adapter->num_tx_queues; i++)
set_bit(__IXGBE_FDIR_INIT_DONE,
&(adapter->tx_ring[i].reinit_state));
} else {
DPRINTK(PROBE, ERR, "failed to finish FDIR re-initialization, "
"ignored adding FDIR ATR filters \n");
}
/* Done FDIR Re-initialization, enable transmits */
netif_tx_start_all_queues(adapter->netdev);
}
/**
* ixgbe_watchdog_task - worker thread to bring link up
* @work: pointer to work_struct containing our data
@ -4814,6 +4948,58 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
writel(i, adapter->hw.hw_addr + tx_ring->tail);
}
static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
int queue, u32 tx_flags)
{
/* Right now, we support IPv4 only */
struct ixgbe_atr_input atr_input;
struct tcphdr *th;
struct udphdr *uh;
struct iphdr *iph = ip_hdr(skb);
struct ethhdr *eth = (struct ethhdr *)skb->data;
u16 vlan_id, src_port, dst_port, flex_bytes;
u32 src_ipv4_addr, dst_ipv4_addr;
u8 l4type = 0;
/* check if we're UDP or TCP */
if (iph->protocol == IPPROTO_TCP) {
th = tcp_hdr(skb);
src_port = th->source;
dst_port = th->dest;
l4type |= IXGBE_ATR_L4TYPE_TCP;
/* l4type IPv4 type is 0, no need to assign */
} else if(iph->protocol == IPPROTO_UDP) {
uh = udp_hdr(skb);
src_port = uh->source;
dst_port = uh->dest;
l4type |= IXGBE_ATR_L4TYPE_UDP;
/* l4type IPv4 type is 0, no need to assign */
} else {
/* Unsupported L4 header, just bail here */
return;
}
memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
IXGBE_TX_FLAGS_VLAN_SHIFT;
src_ipv4_addr = iph->saddr;
dst_ipv4_addr = iph->daddr;
flex_bytes = eth->h_proto;
ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
ixgbe_atr_set_l4type_82599(&atr_input, l4type);
/* src and dst are inverted, think how the receiver sees them */
ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
/* This assumes the Rx queue and Tx queue are bound to the same CPU */
ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
}
static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
struct ixgbe_ring *tx_ring, int size)
{
@ -4848,6 +5034,9 @@ static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
return smp_processor_id();
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
return 0; /* All traffic should default to class 0 */
@ -4932,6 +5121,17 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
if (count) {
/* add the ATR filter if ATR is on */
if (tx_ring->atr_sample_rate) {
++tx_ring->atr_count;
if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
test_bit(__IXGBE_FDIR_INIT_DONE,
&tx_ring->reinit_state)) {
ixgbe_atr(adapter, skb, tx_ring->queue_index,
tx_flags);
tx_ring->atr_count = 0;
}
}
ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
hdr_len);
ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
@ -5314,6 +5514,12 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
netdev->features |= NETIF_F_FCOE_CRC;
netdev->features |= NETIF_F_FSO;
netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
DPRINTK(DRV, INFO, "FCoE enabled, "
"disabling Flow Director\n");
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &=
~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
adapter->atr_sample_rate = 0;
} else {
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
}
@ -5412,6 +5618,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
/* carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
#ifdef CONFIG_IXGBE_DCA
if (dca_add_requester(&pdev->dev) == 0) {
adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
@ -5474,6 +5684,9 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
cancel_work_sync(&adapter->sfp_task);
cancel_work_sync(&adapter->multispeed_fiber_task);
cancel_work_sync(&adapter->sfp_config_module_task);
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
cancel_work_sync(&adapter->fdir_reinit_task);
flush_scheduled_work();
#ifdef CONFIG_IXGBE_DCA