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path: root/drivers/net/ixgbe/ixgbe_main.c
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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c305
1 files changed, 203 insertions, 102 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 3732dd6c4b2a..ead49e54f31b 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -87,6 +87,25 @@ MODULE_VERSION(DRV_VERSION);
#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
+{
+ u32 ctrl_ext;
+
+ /* Let firmware take over control of h/w */
+ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
+ ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
+}
+
+static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
+{
+ u32 ctrl_ext;
+
+ /* Let firmware know the driver has taken over */
+ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
+ ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
+}
#ifdef DEBUG
/**
@@ -165,6 +184,15 @@ static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
return false;
}
+#define IXGBE_MAX_TXD_PWR 14
+#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
+
+/* Tx Descriptors needed, worst case */
+#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
+ (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
+#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
+ MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
+
/**
* ixgbe_clean_tx_irq - Reclaim resources after transmit completes
* @adapter: board private structure
@@ -177,18 +205,34 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter,
struct ixgbe_tx_buffer *tx_buffer_info;
unsigned int i, eop;
bool cleaned = false;
- int count = 0;
+ unsigned int total_tx_bytes = 0, total_tx_packets = 0;
i = tx_ring->next_to_clean;
eop = tx_ring->tx_buffer_info[i].next_to_watch;
eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
while (eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) {
- for (cleaned = false; !cleaned;) {
+ cleaned = false;
+ while (!cleaned) {
tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
tx_buffer_info = &tx_ring->tx_buffer_info[i];
cleaned = (i == eop);
tx_ring->stats.bytes += tx_buffer_info->length;
+ if (cleaned) {
+ struct sk_buff *skb = tx_buffer_info->skb;
+#ifdef NETIF_F_TSO
+ unsigned int segs, bytecount;
+ segs = skb_shinfo(skb)->gso_segs ?: 1;
+ /* multiply data chunks by size of headers */
+ bytecount = ((segs - 1) * skb_headlen(skb)) +
+ skb->len;
+ total_tx_packets += segs;
+ total_tx_bytes += bytecount;
+#else
+ total_tx_packets++;
+ total_tx_bytes += skb->len;
+#endif
+ }
ixgbe_unmap_and_free_tx_resource(adapter,
tx_buffer_info);
tx_desc->wb.status = 0;
@@ -204,29 +248,36 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter,
eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
/* weight of a sort for tx, avoid endless transmit cleanup */
- if (count++ >= tx_ring->work_limit)
+ if (total_tx_packets >= tx_ring->work_limit)
break;
}
tx_ring->next_to_clean = i;
-#define TX_WAKE_THRESHOLD 32
- spin_lock(&tx_ring->tx_lock);
-
- if (cleaned && netif_carrier_ok(netdev) &&
- (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD) &&
- !test_bit(__IXGBE_DOWN, &adapter->state))
- netif_wake_queue(netdev);
-
- spin_unlock(&tx_ring->tx_lock);
+#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
+ if (total_tx_packets && netif_carrier_ok(netdev) &&
+ (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean.
+ */
+ smp_mb();
+ if (netif_queue_stopped(netdev) &&
+ !test_bit(__IXGBE_DOWN, &adapter->state)) {
+ netif_wake_queue(netdev);
+ adapter->restart_queue++;
+ }
+ }
if (adapter->detect_tx_hung)
if (ixgbe_check_tx_hang(adapter, tx_ring, eop, eop_desc))
netif_stop_queue(netdev);
- if (count >= tx_ring->work_limit)
+ if (total_tx_packets >= tx_ring->work_limit)
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->eims_value);
+ adapter->net_stats.tx_bytes += total_tx_bytes;
+ adapter->net_stats.tx_packets += total_tx_packets;
+ cleaned = total_tx_packets ? true : false;
return cleaned;
}
@@ -255,25 +306,40 @@ static void ixgbe_receive_skb(struct ixgbe_adapter *adapter,
}
}
+/**
+ * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
+ * @adapter: address of board private structure
+ * @status_err: hardware indication of status of receive
+ * @skb: skb currently being received and modified
+ **/
static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
u32 status_err,
struct sk_buff *skb)
{
skb->ip_summed = CHECKSUM_NONE;
- /* Ignore Checksum bit is set */
+ /* Ignore Checksum bit is set, or rx csum disabled */
if ((status_err & IXGBE_RXD_STAT_IXSM) ||
- !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
+ !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
return;
- /* TCP/UDP checksum error bit is set */
- if (status_err & (IXGBE_RXDADV_ERR_TCPE | IXGBE_RXDADV_ERR_IPE)) {
- /* let the stack verify checksum errors */
+
+ /* if IP and error */
+ if ((status_err & IXGBE_RXD_STAT_IPCS) &&
+ (status_err & IXGBE_RXDADV_ERR_IPE)) {
adapter->hw_csum_rx_error++;
return;
}
+
+ if (!(status_err & IXGBE_RXD_STAT_L4CS))
+ return;
+
+ if (status_err & IXGBE_RXDADV_ERR_TCPE) {
+ adapter->hw_csum_rx_error++;
+ return;
+ }
+
/* It must be a TCP or UDP packet with a valid checksum */
- if (status_err & (IXGBE_RXD_STAT_L4CS | IXGBE_RXD_STAT_UDPCS))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
adapter->hw_csum_rx_good++;
}
@@ -379,6 +445,7 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter,
u16 hdr_info, vlan_tag;
bool is_vlan, cleaned = false;
int cleaned_count = 0;
+ unsigned int total_rx_bytes = 0, total_rx_packets = 0;
i = rx_ring->next_to_clean;
upper_len = 0;
@@ -458,6 +525,11 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter,
}
ixgbe_rx_checksum(adapter, staterr, skb);
+
+ /* probably a little skewed due to removing CRC */
+ total_rx_bytes += skb->len;
+ total_rx_packets++;
+
skb->protocol = eth_type_trans(skb, netdev);
ixgbe_receive_skb(adapter, skb, is_vlan, vlan_tag);
netdev->last_rx = jiffies;
@@ -486,6 +558,9 @@ next_desc:
if (cleaned_count)
ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
+ adapter->net_stats.rx_bytes += total_rx_bytes;
+ adapter->net_stats.rx_packets += total_rx_packets;
+
return cleaned;
}
@@ -535,7 +610,9 @@ static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
if (!test_bit(__IXGBE_DOWN, &adapter->state))
mod_timer(&adapter->watchdog_timer, jiffies);
}
- IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
+
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
return IRQ_HANDLED;
}
@@ -713,7 +790,6 @@ static irqreturn_t ixgbe_intr(int irq, void *data)
if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
/* Disable interrupts and register for poll. The flush of the
* posted write is intentionally left out. */
- atomic_inc(&adapter->irq_sem);
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
__netif_rx_schedule(netdev, &adapter->napi);
}
@@ -801,7 +877,6 @@ static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
**/
static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
{
- atomic_inc(&adapter->irq_sem);
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
IXGBE_WRITE_FLUSH(&adapter->hw);
synchronize_irq(adapter->pdev->irq);
@@ -813,15 +888,13 @@ static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
**/
static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
{
- if (atomic_dec_and_test(&adapter->irq_sem)) {
- if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
- IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC,
- (IXGBE_EIMS_ENABLE_MASK &
- ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC)));
- IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS,
- IXGBE_EIMS_ENABLE_MASK);
- IXGBE_WRITE_FLUSH(&adapter->hw);
- }
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC,
+ (IXGBE_EIMS_ENABLE_MASK &
+ ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC)));
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS,
+ IXGBE_EIMS_ENABLE_MASK);
+ IXGBE_WRITE_FLUSH(&adapter->hw);
}
/**
@@ -1040,7 +1113,8 @@ static void ixgbe_vlan_rx_register(struct net_device *netdev,
struct ixgbe_adapter *adapter = netdev_priv(netdev);
u32 ctrl;
- ixgbe_irq_disable(adapter);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_disable(adapter);
adapter->vlgrp = grp;
if (grp) {
@@ -1051,7 +1125,8 @@ static void ixgbe_vlan_rx_register(struct net_device *netdev,
IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
}
- ixgbe_irq_enable(adapter);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable(adapter);
}
static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
@@ -1066,9 +1141,13 @@ static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
- ixgbe_irq_disable(adapter);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_disable(adapter);
+
vlan_group_set_device(adapter->vlgrp, vid, NULL);
- ixgbe_irq_enable(adapter);
+
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable(adapter);
/* remove VID from filter table */
ixgbe_set_vfta(&adapter->hw, vid, 0, false);
@@ -1170,6 +1249,8 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
u32 txdctl, rxdctl, mhadd;
int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+ ixgbe_get_hw_control(adapter);
+
if (adapter->flags & (IXGBE_FLAG_MSIX_ENABLED |
IXGBE_FLAG_MSI_ENABLED)) {
if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
@@ -1224,6 +1305,16 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
return 0;
}
+void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
+{
+ WARN_ON(in_interrupt());
+ while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
+ msleep(1);
+ ixgbe_down(adapter);
+ ixgbe_up(adapter);
+ clear_bit(__IXGBE_RESETTING, &adapter->state);
+}
+
int ixgbe_up(struct ixgbe_adapter *adapter)
{
/* hardware has been reset, we need to reload some things */
@@ -1408,7 +1499,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
msleep(10);
napi_disable(&adapter->napi);
- atomic_set(&adapter->irq_sem, 0);
ixgbe_irq_disable(adapter);
@@ -1447,6 +1537,8 @@ static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
+ ixgbe_release_hw_control(adapter);
+
pci_disable_device(pdev);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
@@ -1481,7 +1573,8 @@ static int ixgbe_clean(struct napi_struct *napi, int budget)
/* If budget not fully consumed, exit the polling mode */
if (work_done < budget) {
netif_rx_complete(netdev, napi);
- ixgbe_irq_enable(adapter);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable(adapter);
}
return work_done;
@@ -1506,8 +1599,7 @@ static void ixgbe_reset_task(struct work_struct *work)
adapter->tx_timeout_count++;
- ixgbe_down(adapter);
- ixgbe_up(adapter);
+ ixgbe_reinit_locked(adapter);
}
/**
@@ -1590,7 +1682,6 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
return -ENOMEM;
}
- atomic_set(&adapter->irq_sem, 1);
set_bit(__IXGBE_DOWN, &adapter->state);
return 0;
@@ -1634,7 +1725,6 @@ int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
txdr->next_to_use = 0;
txdr->next_to_clean = 0;
txdr->work_limit = txdr->count;
- spin_lock_init(&txdr->tx_lock);
return 0;
}
@@ -1828,10 +1918,8 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
netdev->mtu = new_mtu;
- if (netif_running(netdev)) {
- ixgbe_down(adapter);
- ixgbe_up(adapter);
- }
+ if (netif_running(netdev))
+ ixgbe_reinit_locked(adapter);
return 0;
}
@@ -1852,14 +1940,8 @@ static int ixgbe_open(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int err;
- u32 ctrl_ext;
u32 num_rx_queues = adapter->num_rx_queues;
- /* Let firmware know the driver has taken over */
- ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
- IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
- ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
-
try_intr_reinit:
/* allocate transmit descriptors */
err = ixgbe_setup_all_tx_resources(adapter);
@@ -1910,6 +1992,7 @@ try_intr_reinit:
return 0;
err_up:
+ ixgbe_release_hw_control(adapter);
ixgbe_free_irq(adapter);
err_req_irq:
ixgbe_free_all_rx_resources(adapter);
@@ -1935,7 +2018,6 @@ err_setup_tx:
static int ixgbe_close(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
- u32 ctrl_ext;
ixgbe_down(adapter);
ixgbe_free_irq(adapter);
@@ -1943,9 +2025,7 @@ static int ixgbe_close(struct net_device *netdev)
ixgbe_free_all_tx_resources(adapter);
ixgbe_free_all_rx_resources(adapter);
- ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
- IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
- ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
+ ixgbe_release_hw_control(adapter);
return 0;
}
@@ -1957,22 +2037,26 @@ static int ixgbe_close(struct net_device *netdev)
void ixgbe_update_stats(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
- u64 good_rx, missed_rx, bprc;
+ u64 total_mpc = 0;
+ u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
- good_rx = IXGBE_READ_REG(hw, IXGBE_GPRC);
- missed_rx = IXGBE_READ_REG(hw, IXGBE_MPC(0));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(1));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(2));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(3));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(4));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(5));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(6));
- missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(7));
- adapter->stats.gprc += (good_rx - missed_rx);
-
- adapter->stats.mpc[0] += missed_rx;
+ for (i = 0; i < 8; i++) {
+ /* for packet buffers not used, the register should read 0 */
+ mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
+ missed_rx += mpc;
+ adapter->stats.mpc[i] += mpc;
+ total_mpc += adapter->stats.mpc[i];
+ adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
+ }
+ adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
+ /* work around hardware counting issue */
+ adapter->stats.gprc -= missed_rx;
+
+ /* 82598 hardware only has a 32 bit counter in the high register */
adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
+ adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
+ adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
adapter->stats.bprc += bprc;
adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
@@ -1984,35 +2068,37 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
-
adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
- adapter->stats.lxontxc += IXGBE_READ_REG(hw, IXGBE_LXONTXC);
adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
- adapter->stats.lxofftxc += IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
+ lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
+ adapter->stats.lxontxc += lxon;
+ lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
+ adapter->stats.lxofftxc += lxoff;
adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
- adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
- adapter->stats.rnbc[0] += IXGBE_READ_REG(hw, IXGBE_RNBC(0));
+ adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
+ /*
+ * 82598 errata - tx of flow control packets is included in tx counters
+ */
+ xon_off_tot = lxon + lxoff;
+ adapter->stats.gptc -= xon_off_tot;
+ adapter->stats.mptc -= xon_off_tot;
+ adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
- adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
+ adapter->stats.ptc64 -= xon_off_tot;
adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
- adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
/* Fill out the OS statistics structure */
- adapter->net_stats.rx_packets = adapter->stats.gprc;
- adapter->net_stats.tx_packets = adapter->stats.gptc;
- adapter->net_stats.rx_bytes = adapter->stats.gorc;
- adapter->net_stats.tx_bytes = adapter->stats.gotc;
adapter->net_stats.multicast = adapter->stats.mprc;
/* Rx Errors */
@@ -2021,8 +2107,7 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
adapter->net_stats.rx_dropped = 0;
adapter->net_stats.rx_length_errors = adapter->stats.rlec;
adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
- adapter->net_stats.rx_missed_errors = adapter->stats.mpc[0];
-
+ adapter->net_stats.rx_missed_errors = total_mpc;
}
/**
@@ -2076,15 +2161,6 @@ static void ixgbe_watchdog(unsigned long data)
round_jiffies(jiffies + 2 * HZ));
}
-#define IXGBE_MAX_TXD_PWR 14
-#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
-
-/* Tx Descriptors needed, worst case */
-#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
- (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
-#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
- MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
-
static int ixgbe_tso(struct ixgbe_adapter *adapter,
struct ixgbe_ring *tx_ring, struct sk_buff *skb,
u32 tx_flags, u8 *hdr_len)
@@ -2356,6 +2432,37 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
writel(i, adapter->hw.hw_addr + tx_ring->tail);
}
+static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
+ struct ixgbe_ring *tx_ring, int size)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ netif_stop_queue(netdev);
+ /* Herbert's original patch had:
+ * smp_mb__after_netif_stop_queue();
+ * but since that doesn't exist yet, just open code it. */
+ smp_mb();
+
+ /* We need to check again in a case another CPU has just
+ * made room available. */
+ if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
+ return -EBUSY;
+
+ /* A reprieve! - use start_queue because it doesn't call schedule */
+ netif_wake_queue(netdev);
+ ++adapter->restart_queue;
+ return 0;
+}
+
+static int ixgbe_maybe_stop_tx(struct net_device *netdev,
+ struct ixgbe_ring *tx_ring, int size)
+{
+ if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
+ return 0;
+ return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
+}
+
+
static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
@@ -2363,7 +2470,6 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
unsigned int len = skb->len;
unsigned int first;
unsigned int tx_flags = 0;
- unsigned long flags = 0;
u8 hdr_len;
int tso;
unsigned int mss = 0;
@@ -2389,14 +2495,10 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
for (f = 0; f < nr_frags; f++)
count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
- spin_lock_irqsave(&tx_ring->tx_lock, flags);
- if (IXGBE_DESC_UNUSED(tx_ring) < (count + 2)) {
+ if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
adapter->tx_busy++;
- netif_stop_queue(netdev);
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
return NETDEV_TX_BUSY;
}
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
tx_flags |= IXGBE_TX_FLAGS_VLAN;
tx_flags |= (vlan_tx_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT);
@@ -2423,11 +2525,7 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
netdev->trans_start = jiffies;
- spin_lock_irqsave(&tx_ring->tx_lock, flags);
- /* Make sure there is space in the ring for the next send. */
- if (IXGBE_DESC_UNUSED(tx_ring) < DESC_NEEDED)
- netif_stop_queue(netdev);
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
+ ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
return NETDEV_TX_OK;
}
@@ -2697,6 +2795,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
return 0;
err_register:
+ ixgbe_release_hw_control(adapter);
err_hw_init:
err_sw_init:
err_eeprom:
@@ -2732,6 +2831,8 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
unregister_netdev(netdev);
+ ixgbe_release_hw_control(adapter);
+
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-12 09:24:16 +0000