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path: root/drivers/net/s2io.c
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Diffstat (limited to 'drivers/net/s2io.c')
-rw-r--r--drivers/net/s2io.c672
1 files changed, 317 insertions, 355 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index c6b77acb35ef8..e72e0e099060f 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -71,12 +71,13 @@
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/div64.h>
+#include <asm/irq.h>
/* local include */
#include "s2io.h"
#include "s2io-regs.h"
-#define DRV_VERSION "2.0.14.2"
+#define DRV_VERSION "2.0.15.2"
/* S2io Driver name & version. */
static char s2io_driver_name[] = "Neterion";
@@ -370,38 +371,50 @@ static const u64 fix_mac[] = {
END_SIGN
};
+MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+
/* Module Loadable parameters. */
-static unsigned int tx_fifo_num = 1;
-static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
- {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
-static unsigned int rx_ring_num = 1;
-static unsigned int rx_ring_sz[MAX_RX_RINGS] =
- {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
-static unsigned int rts_frm_len[MAX_RX_RINGS] =
- {[0 ...(MAX_RX_RINGS - 1)] = 0 };
-static unsigned int rx_ring_mode = 1;
-static unsigned int use_continuous_tx_intrs = 1;
-static unsigned int rmac_pause_time = 0x100;
-static unsigned int mc_pause_threshold_q0q3 = 187;
-static unsigned int mc_pause_threshold_q4q7 = 187;
-static unsigned int shared_splits;
-static unsigned int tmac_util_period = 5;
-static unsigned int rmac_util_period = 5;
-static unsigned int bimodal = 0;
-static unsigned int l3l4hdr_size = 128;
-#ifndef CONFIG_S2IO_NAPI
-static unsigned int indicate_max_pkts;
-#endif
+S2IO_PARM_INT(tx_fifo_num, 1);
+S2IO_PARM_INT(rx_ring_num, 1);
+
+
+S2IO_PARM_INT(rx_ring_mode, 1);
+S2IO_PARM_INT(use_continuous_tx_intrs, 1);
+S2IO_PARM_INT(rmac_pause_time, 0x100);
+S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
+S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
+S2IO_PARM_INT(shared_splits, 0);
+S2IO_PARM_INT(tmac_util_period, 5);
+S2IO_PARM_INT(rmac_util_period, 5);
+S2IO_PARM_INT(bimodal, 0);
+S2IO_PARM_INT(l3l4hdr_size, 128);
/* Frequency of Rx desc syncs expressed as power of 2 */
-static unsigned int rxsync_frequency = 3;
+S2IO_PARM_INT(rxsync_frequency, 3);
/* Interrupt type. Values can be 0(INTA), 1(MSI), 2(MSI_X) */
-static unsigned int intr_type = 0;
+S2IO_PARM_INT(intr_type, 0);
/* Large receive offload feature */
-static unsigned int lro = 0;
+S2IO_PARM_INT(lro, 0);
/* Max pkts to be aggregated by LRO at one time. If not specified,
* aggregation happens until we hit max IP pkt size(64K)
*/
-static unsigned int lro_max_pkts = 0xFFFF;
+S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
+#ifndef CONFIG_S2IO_NAPI
+S2IO_PARM_INT(indicate_max_pkts, 0);
+#endif
+
+static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
+ {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
+static unsigned int rx_ring_sz[MAX_RX_RINGS] =
+ {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
+static unsigned int rts_frm_len[MAX_RX_RINGS] =
+ {[0 ...(MAX_RX_RINGS - 1)] = 0 };
+
+module_param_array(tx_fifo_len, uint, NULL, 0);
+module_param_array(rx_ring_sz, uint, NULL, 0);
+module_param_array(rts_frm_len, uint, NULL, 0);
/*
* S2IO device table.
@@ -464,10 +477,9 @@ static int init_shared_mem(struct s2io_nic *nic)
size += config->tx_cfg[i].fifo_len;
}
if (size > MAX_AVAILABLE_TXDS) {
- DBG_PRINT(ERR_DBG, "%s: Requested TxDs too high, ",
- __FUNCTION__);
+ DBG_PRINT(ERR_DBG, "s2io: Requested TxDs too high, ");
DBG_PRINT(ERR_DBG, "Requested: %d, max supported: 8192\n", size);
- return FAILURE;
+ return -EINVAL;
}
lst_size = (sizeof(TxD_t) * config->max_txds);
@@ -547,6 +559,7 @@ static int init_shared_mem(struct s2io_nic *nic)
nic->ufo_in_band_v = kmalloc((sizeof(u64) * size), GFP_KERNEL);
if (!nic->ufo_in_band_v)
return -ENOMEM;
+ memset(nic->ufo_in_band_v, 0, size);
/* Allocation and initialization of RXDs in Rings */
size = 0;
@@ -1213,7 +1226,7 @@ static int init_nic(struct s2io_nic *nic)
break;
}
- /* Enable Tx FIFO partition 0. */
+ /* Enable all configured Tx FIFO partitions */
val64 = readq(&bar0->tx_fifo_partition_0);
val64 |= (TX_FIFO_PARTITION_EN);
writeq(val64, &bar0->tx_fifo_partition_0);
@@ -1650,7 +1663,7 @@ static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag)
writeq(temp64, &bar0->general_int_mask);
/*
* If Hercules adapter enable GPIO otherwise
- * disabled all PCIX, Flash, MDIO, IIC and GPIO
+ * disable all PCIX, Flash, MDIO, IIC and GPIO
* interrupts for now.
* TODO
*/
@@ -1976,7 +1989,6 @@ static int start_nic(struct s2io_nic *nic)
XENA_dev_config_t __iomem *bar0 = nic->bar0;
struct net_device *dev = nic->dev;
register u64 val64 = 0;
- u16 interruptible;
u16 subid, i;
mac_info_t *mac_control;
struct config_param *config;
@@ -2047,16 +2059,6 @@ static int start_nic(struct s2io_nic *nic)
return FAILURE;
}
- /* Enable select interrupts */
- if (nic->intr_type != INTA)
- en_dis_able_nic_intrs(nic, ENA_ALL_INTRS, DISABLE_INTRS);
- else {
- interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
- interruptible |= TX_PIC_INTR | RX_PIC_INTR;
- interruptible |= TX_MAC_INTR | RX_MAC_INTR;
- en_dis_able_nic_intrs(nic, interruptible, ENABLE_INTRS);
- }
-
/*
* With some switches, link might be already up at this point.
* Because of this weird behavior, when we enable laser,
@@ -2130,7 +2132,7 @@ static struct sk_buff *s2io_txdl_getskb(fifo_info_t *fifo_data, TxD_t *txdlp, in
frag->size, PCI_DMA_TODEVICE);
}
}
- txdlp->Host_Control = 0;
+ memset(txdlp,0, (sizeof(TxD_t) * fifo_data->max_txds));
return(skb);
}
@@ -2382,9 +2384,14 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
skb->data = (void *) (unsigned long)tmp;
skb->tail = (void *) (unsigned long)tmp;
- ((RxD3_t*)rxdp)->Buffer0_ptr =
- pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
+ if (!(((RxD3_t*)rxdp)->Buffer0_ptr))
+ ((RxD3_t*)rxdp)->Buffer0_ptr =
+ pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
PCI_DMA_FROMDEVICE);
+ else
+ pci_dma_sync_single_for_device(nic->pdev,
+ (dma_addr_t) ((RxD3_t*)rxdp)->Buffer0_ptr,
+ BUF0_LEN, PCI_DMA_FROMDEVICE);
rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
if (nic->rxd_mode == RXD_MODE_3B) {
/* Two buffer mode */
@@ -2397,10 +2404,13 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
(nic->pdev, skb->data, dev->mtu + 4,
PCI_DMA_FROMDEVICE);
- /* Buffer-1 will be dummy buffer not used */
- ((RxD3_t*)rxdp)->Buffer1_ptr =
- pci_map_single(nic->pdev, ba->ba_1, BUF1_LEN,
- PCI_DMA_FROMDEVICE);
+ /* Buffer-1 will be dummy buffer. Not used */
+ if (!(((RxD3_t*)rxdp)->Buffer1_ptr)) {
+ ((RxD3_t*)rxdp)->Buffer1_ptr =
+ pci_map_single(nic->pdev,
+ ba->ba_1, BUF1_LEN,
+ PCI_DMA_FROMDEVICE);
+ }
rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
rxdp->Control_2 |= SET_BUFFER2_SIZE_3
(dev->mtu + 4);
@@ -2625,23 +2635,23 @@ no_rx:
}
#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
/**
- * s2io_netpoll - Rx interrupt service handler for netpoll support
+ * s2io_netpoll - netpoll event handler entry point
* @dev : pointer to the device structure.
* Description:
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
+ * This function will be called by upper layer to check for events on the
+ * interface in situations where interrupts are disabled. It is used for
+ * specific in-kernel networking tasks, such as remote consoles and kernel
+ * debugging over the network (example netdump in RedHat).
*/
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
static void s2io_netpoll(struct net_device *dev)
{
nic_t *nic = dev->priv;
mac_info_t *mac_control;
struct config_param *config;
XENA_dev_config_t __iomem *bar0 = nic->bar0;
- u64 val64;
+ u64 val64 = 0xFFFFFFFFFFFFFFFFULL;
int i;
disable_irq(dev->irq);
@@ -2650,9 +2660,17 @@ static void s2io_netpoll(struct net_device *dev)
mac_control = &nic->mac_control;
config = &nic->config;
- val64 = readq(&bar0->rx_traffic_int);
writeq(val64, &bar0->rx_traffic_int);
+ writeq(val64, &bar0->tx_traffic_int);
+ /* we need to free up the transmitted skbufs or else netpoll will
+ * run out of skbs and will fail and eventually netpoll application such
+ * as netdump will fail.
+ */
+ for (i = 0; i < config->tx_fifo_num; i++)
+ tx_intr_handler(&mac_control->fifos[i]);
+
+ /* check for received packet and indicate up to network */
for (i = 0; i < config->rx_ring_num; i++)
rx_intr_handler(&mac_control->rings[i]);
@@ -2719,7 +2737,7 @@ static void rx_intr_handler(ring_info_t *ring_data)
/* If your are next to put index then it's FIFO full condition */
if ((get_block == put_block) &&
(get_info.offset + 1) == put_info.offset) {
- DBG_PRINT(ERR_DBG, "%s: Ring Full\n",dev->name);
+ DBG_PRINT(INTR_DBG, "%s: Ring Full\n",dev->name);
break;
}
skb = (struct sk_buff *) ((unsigned long)rxdp->Host_Control);
@@ -2739,18 +2757,15 @@ static void rx_intr_handler(ring_info_t *ring_data)
HEADER_SNAP_SIZE,
PCI_DMA_FROMDEVICE);
} else if (nic->rxd_mode == RXD_MODE_3B) {
- pci_unmap_single(nic->pdev, (dma_addr_t)
+ pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
((RxD3_t*)rxdp)->Buffer0_ptr,
BUF0_LEN, PCI_DMA_FROMDEVICE);
pci_unmap_single(nic->pdev, (dma_addr_t)
- ((RxD3_t*)rxdp)->Buffer1_ptr,
- BUF1_LEN, PCI_DMA_FROMDEVICE);
- pci_unmap_single(nic->pdev, (dma_addr_t)
((RxD3_t*)rxdp)->Buffer2_ptr,
dev->mtu + 4,
PCI_DMA_FROMDEVICE);
} else {
- pci_unmap_single(nic->pdev, (dma_addr_t)
+ pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
((RxD3_t*)rxdp)->Buffer0_ptr, BUF0_LEN,
PCI_DMA_FROMDEVICE);
pci_unmap_single(nic->pdev, (dma_addr_t)
@@ -3338,7 +3353,7 @@ static void s2io_reset(nic_t * sp)
/* Clear certain PCI/PCI-X fields after reset */
if (sp->device_type == XFRAME_II_DEVICE) {
- /* Clear parity err detect bit */
+ /* Clear "detected parity error" bit */
pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000);
/* Clearing PCIX Ecc status register */
@@ -3539,7 +3554,7 @@ static void restore_xmsi_data(nic_t *nic)
u64 val64;
int i;
- for (i=0; i< nic->avail_msix_vectors; i++) {
+ for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
writeq(nic->msix_info[i].data, &bar0->xmsi_data);
val64 = (BIT(7) | BIT(15) | vBIT(i, 26, 6));
@@ -3558,7 +3573,7 @@ static void store_xmsi_data(nic_t *nic)
int i;
/* Store and display */
- for (i=0; i< nic->avail_msix_vectors; i++) {
+ for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
val64 = (BIT(15) | vBIT(i, 26, 6));
writeq(val64, &bar0->xmsi_access);
if (wait_for_msix_trans(nic, i)) {
@@ -3749,101 +3764,19 @@ static int s2io_open(struct net_device *dev)
if (err) {
DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
dev->name);
- if (err == -ENODEV)
- goto hw_init_failed;
- else
- goto hw_enable_failed;
- }
-
- /* Store the values of the MSIX table in the nic_t structure */
- store_xmsi_data(sp);
-
- /* After proper initialization of H/W, register ISR */
- if (sp->intr_type == MSI) {
- err = request_irq((int) sp->pdev->irq, s2io_msi_handle,
- IRQF_SHARED, sp->name, dev);
- if (err) {
- DBG_PRINT(ERR_DBG, "%s: MSI registration \
-failed\n", dev->name);
- goto isr_registration_failed;
- }
- }
- if (sp->intr_type == MSI_X) {
- int i;
-
- for (i=1; (sp->s2io_entries[i].in_use == MSIX_FLG); i++) {
- if (sp->s2io_entries[i].type == MSIX_FIFO_TYPE) {
- sprintf(sp->desc1, "%s:MSI-X-%d-TX",
- dev->name, i);
- err = request_irq(sp->entries[i].vector,
- s2io_msix_fifo_handle, 0, sp->desc1,
- sp->s2io_entries[i].arg);
- DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc1,
- (unsigned long long)sp->msix_info[i].addr);
- } else {
- sprintf(sp->desc2, "%s:MSI-X-%d-RX",
- dev->name, i);
- err = request_irq(sp->entries[i].vector,
- s2io_msix_ring_handle, 0, sp->desc2,
- sp->s2io_entries[i].arg);
- DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc2,
- (unsigned long long)sp->msix_info[i].addr);
- }
- if (err) {
- DBG_PRINT(ERR_DBG, "%s: MSI-X-%d registration \
-failed\n", dev->name, i);
- DBG_PRINT(ERR_DBG, "Returned: %d\n", err);
- goto isr_registration_failed;
- }
- sp->s2io_entries[i].in_use = MSIX_REGISTERED_SUCCESS;
- }
- }
- if (sp->intr_type == INTA) {
- err = request_irq((int) sp->pdev->irq, s2io_isr, IRQF_SHARED,
- sp->name, dev);
- if (err) {
- DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
- dev->name);
- goto isr_registration_failed;
- }
+ goto hw_init_failed;
}
if (s2io_set_mac_addr(dev, dev->dev_addr) == FAILURE) {
DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n");
+ s2io_card_down(sp);
err = -ENODEV;
- goto setting_mac_address_failed;
+ goto hw_init_failed;
}
netif_start_queue(dev);
return 0;
-setting_mac_address_failed:
- if (sp->intr_type != MSI_X)
- free_irq(sp->pdev->irq, dev);
-isr_registration_failed:
- del_timer_sync(&sp->alarm_timer);
- if (sp->intr_type == MSI_X) {
- int i;
- u16 msi_control; /* Temp variable */
-
- for (i=1; (sp->s2io_entries[i].in_use ==
- MSIX_REGISTERED_SUCCESS); i++) {
- int vector = sp->entries[i].vector;
- void *arg = sp->s2io_entries[i].arg;
-
- free_irq(vector, arg);
- }
- pci_disable_msix(sp->pdev);
-
- /* Temp */
- pci_read_config_word(sp->pdev, 0x42, &msi_control);
- msi_control &= 0xFFFE; /* Disable MSI */
- pci_write_config_word(sp->pdev, 0x42, msi_control);
- }
- else if (sp->intr_type == MSI)
- pci_disable_msi(sp->pdev);
-hw_enable_failed:
- s2io_reset(sp);
hw_init_failed:
if (sp->intr_type == MSI_X) {
if (sp->entries)
@@ -3874,7 +3807,7 @@ static int s2io_close(struct net_device *dev)
flush_scheduled_work();
netif_stop_queue(dev);
/* Reset card, kill tasklet and free Tx and Rx buffers. */
- s2io_card_down(sp, 1);
+ s2io_card_down(sp);
sp->device_close_flag = TRUE; /* Device is shut down. */
return 0;
@@ -3901,13 +3834,11 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
TxD_t *txdp;
TxFIFO_element_t __iomem *tx_fifo;
unsigned long flags;
-#ifdef NETIF_F_TSO
- int mss;
-#endif
u16 vlan_tag = 0;
int vlan_priority = 0;
mac_info_t *mac_control;
struct config_param *config;
+ int offload_type;
mac_control = &sp->mac_control;
config = &sp->config;
@@ -3955,13 +3886,11 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}
- txdp->Control_1 = 0;
- txdp->Control_2 = 0;
+ offload_type = s2io_offload_type(skb);
#ifdef NETIF_F_TSO
- mss = skb_shinfo(skb)->gso_size;
- if (skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
+ if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
txdp->Control_1 |= TXD_TCP_LSO_EN;
- txdp->Control_1 |= TXD_TCP_LSO_MSS(mss);
+ txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
}
#endif
if (skb->ip_summed == CHECKSUM_HW) {
@@ -3979,10 +3908,10 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
}
frg_len = skb->len - skb->data_len;
- if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP) {
+ if (offload_type == SKB_GSO_UDP) {
int ufo_size;
- ufo_size = skb_shinfo(skb)->gso_size;
+ ufo_size = s2io_udp_mss(skb);
ufo_size &= ~7;
txdp->Control_1 |= TXD_UFO_EN;
txdp->Control_1 |= TXD_UFO_MSS(ufo_size);
@@ -3999,16 +3928,13 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
sp->ufo_in_band_v,
sizeof(u64), PCI_DMA_TODEVICE);
txdp++;
- txdp->Control_1 = 0;
- txdp->Control_2 = 0;
}
txdp->Buffer_Pointer = pci_map_single
(sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE);
txdp->Host_Control = (unsigned long) skb;
txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
-
- if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+ if (offload_type == SKB_GSO_UDP)
txdp->Control_1 |= TXD_UFO_EN;
frg_cnt = skb_shinfo(skb)->nr_frags;
@@ -4023,12 +3949,12 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
(sp->pdev, frag->page, frag->page_offset,
frag->size, PCI_DMA_TODEVICE);
txdp->Control_1 = TXD_BUFFER0_SIZE(frag->size);
- if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+ if (offload_type == SKB_GSO_UDP)
txdp->Control_1 |= TXD_UFO_EN;
}
txdp->Control_1 |= TXD_GATHER_CODE_LAST;
- if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+ if (offload_type == SKB_GSO_UDP)
frg_cnt++; /* as Txd0 was used for inband header */
tx_fifo = mac_control->tx_FIFO_start[queue];
@@ -4037,13 +3963,9 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
TX_FIFO_LAST_LIST);
-
-#ifdef NETIF_F_TSO
- if (mss)
- val64 |= TX_FIFO_SPECIAL_FUNC;
-#endif
- if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+ if (offload_type)
val64 |= TX_FIFO_SPECIAL_FUNC;
+
writeq(val64, &tx_fifo->List_Control);
mmiowb();
@@ -4077,13 +3999,41 @@ s2io_alarm_handle(unsigned long data)
mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
}
+static int s2io_chk_rx_buffers(nic_t *sp, int rng_n)
+{
+ int rxb_size, level;
+
+ if (!sp->lro) {
+ rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
+ level = rx_buffer_level(sp, rxb_size, rng_n);
+
+ if ((level == PANIC) && (!TASKLET_IN_USE)) {
+ int ret;
+ DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
+ DBG_PRINT(INTR_DBG, "PANIC levels\n");
+ if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
+ DBG_PRINT(ERR_DBG, "Out of memory in %s",
+ __FUNCTION__);
+ clear_bit(0, (&sp->tasklet_status));
+ return -1;
+ }
+ clear_bit(0, (&sp->tasklet_status));
+ } else if (level == LOW)
+ tasklet_schedule(&sp->task);
+
+ } else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
+ DBG_PRINT(ERR_DBG, "%s:Out of memory", sp->dev->name);
+ DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
+ }
+ return 0;
+}
+
static irqreturn_t
s2io_msi_handle(int irq, void *dev_id, struct pt_regs *regs)
{
struct net_device *dev = (struct net_device *) dev_id;
nic_t *sp = dev->priv;
int i;
- int ret;
mac_info_t *mac_control;
struct config_param *config;
@@ -4105,35 +4055,8 @@ s2io_msi_handle(int irq, void *dev_id, struct pt_regs *regs)
* reallocate the buffers from the interrupt handler itself,
* else schedule a tasklet to reallocate the buffers.
*/
- for (i = 0; i < config->rx_ring_num; i++) {
- if (!sp->lro) {
- int rxb_size = atomic_read(&sp->rx_bufs_left[i]);
- int level = rx_buffer_level(sp, rxb_size, i);
-
- if ((level == PANIC) && (!TASKLET_IN_USE)) {
- DBG_PRINT(INTR_DBG, "%s: Rx BD hit ",
- dev->name);
- DBG_PRINT(INTR_DBG, "PANIC levels\n");
- if ((ret = fill_rx_buffers(sp, i)) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "%s:Out of memory",
- dev->name);
- DBG_PRINT(ERR_DBG, " in ISR!!\n");
- clear_bit(0, (&sp->tasklet_status));
- atomic_dec(&sp->isr_cnt);
- return IRQ_HANDLED;
- }
- clear_bit(0, (&sp->tasklet_status));
- } else if (level == LOW) {
- tasklet_schedule(&sp->task);
- }
- }
- else if (fill_rx_buffers(sp, i) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "%s:Out of memory",
- dev->name);
- DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
- break;
- }
- }
+ for (i = 0; i < config->rx_ring_num; i++)
+ s2io_chk_rx_buffers(sp, i);
atomic_dec(&sp->isr_cnt);
return IRQ_HANDLED;
@@ -4144,39 +4067,13 @@ s2io_msix_ring_handle(int irq, void *dev_id, struct pt_regs *regs)
{
ring_info_t *ring = (ring_info_t *)dev_id;
nic_t *sp = ring->nic;
- struct net_device *dev = (struct net_device *) dev_id;
- int rxb_size, level, rng_n;
atomic_inc(&sp->isr_cnt);
- rx_intr_handler(ring);
- rng_n = ring->ring_no;
- if (!sp->lro) {
- rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
- level = rx_buffer_level(sp, rxb_size, rng_n);
-
- if ((level == PANIC) && (!TASKLET_IN_USE)) {
- int ret;
- DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
- DBG_PRINT(INTR_DBG, "PANIC levels\n");
- if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "Out of memory in %s",
- __FUNCTION__);
- clear_bit(0, (&sp->tasklet_status));
- return IRQ_HANDLED;
- }
- clear_bit(0, (&sp->tasklet_status));
- } else if (level == LOW) {
- tasklet_schedule(&sp->task);
- }
- }
- else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "%s:Out of memory", dev->name);
- DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
- }
+ rx_intr_handler(ring);
+ s2io_chk_rx_buffers(sp, ring->ring_no);
atomic_dec(&sp->isr_cnt);
-
return IRQ_HANDLED;
}
@@ -4341,37 +4238,8 @@ static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs)
* else schedule a tasklet to reallocate the buffers.
*/
#ifndef CONFIG_S2IO_NAPI
- for (i = 0; i < config->rx_ring_num; i++) {
- if (!sp->lro) {
- int ret;
- int rxb_size = atomic_read(&sp->rx_bufs_left[i]);
- int level = rx_buffer_level(sp, rxb_size, i);
-
- if ((level == PANIC) && (!TASKLET_IN_USE)) {
- DBG_PRINT(INTR_DBG, "%s: Rx BD hit ",
- dev->name);
- DBG_PRINT(INTR_DBG, "PANIC levels\n");
- if ((ret = fill_rx_buffers(sp, i)) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "%s:Out of memory",
- dev->name);
- DBG_PRINT(ERR_DBG, " in ISR!!\n");
- clear_bit(0, (&sp->tasklet_status));
- atomic_dec(&sp->isr_cnt);
- writeq(org_mask, &bar0->general_int_mask);
- return IRQ_HANDLED;
- }
- clear_bit(0, (&sp->tasklet_status));
- } else if (level == LOW) {
- tasklet_schedule(&sp->task);
- }
- }
- else if (fill_rx_buffers(sp, i) == -ENOMEM) {
- DBG_PRINT(ERR_DBG, "%s:Out of memory",
- dev->name);
- DBG_PRINT(ERR_DBG, " in Rx intr!!\n");
- break;
- }
- }
+ for (i = 0; i < config->rx_ring_num; i++)
+ s2io_chk_rx_buffers(sp, i);
#endif
writeq(org_mask, &bar0->general_int_mask);
atomic_dec(&sp->isr_cnt);
@@ -4401,6 +4269,8 @@ static void s2io_updt_stats(nic_t *sp)
if (cnt == 5)
break; /* Updt failed */
} while(1);
+ } else {
+ memset(sp->mac_control.stats_info, 0, sizeof(StatInfo_t));
}
}
@@ -5035,7 +4905,8 @@ static int write_eeprom(nic_t * sp, int off, u64 data, int cnt)
}
static void s2io_vpd_read(nic_t *nic)
{
- u8 vpd_data[256],data;
+ u8 *vpd_data;
+ u8 data;
int i=0, cnt, fail = 0;
int vpd_addr = 0x80;
@@ -5048,6 +4919,10 @@ static void s2io_vpd_read(nic_t *nic)
vpd_addr = 0x50;
}
+ vpd_data = kmalloc(256, GFP_KERNEL);
+ if (!vpd_data)
+ return;
+
for (i = 0; i < 256; i +=4 ) {
pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
pci_read_config_byte(nic->pdev, (vpd_addr + 2), &data);
@@ -5070,6 +4945,7 @@ static void s2io_vpd_read(nic_t *nic)
memset(nic->product_name, 0, vpd_data[1]);
memcpy(nic->product_name, &vpd_data[3], vpd_data[1]);
}
+ kfree(vpd_data);
}
/**
@@ -5388,7 +5264,7 @@ static int s2io_link_test(nic_t * sp, uint64_t * data)
else
*data = 0;
- return 0;
+ return *data;
}
/**
@@ -5846,6 +5722,19 @@ static int s2io_ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
return 0;
}
+static u32 s2io_ethtool_op_get_tso(struct net_device *dev)
+{
+ return (dev->features & NETIF_F_TSO) != 0;
+}
+static int s2io_ethtool_op_set_tso(struct net_device *dev, u32 data)
+{
+ if (data)
+ dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
+ else
+ dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+
+ return 0;
+}
static struct ethtool_ops netdev_ethtool_ops = {
.get_settings = s2io_ethtool_gset,
@@ -5866,8 +5755,8 @@ static struct ethtool_ops netdev_ethtool_ops = {
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
#ifdef NETIF_F_TSO
- .get_tso = ethtool_op_get_tso,
- .set_tso = ethtool_op_set_tso,
+ .get_tso = s2io_ethtool_op_get_tso,
+ .set_tso = s2io_ethtool_op_set_tso,
#endif
.get_ufo = ethtool_op_get_ufo,
.set_ufo = ethtool_op_set_ufo,
@@ -5919,7 +5808,7 @@ static int s2io_change_mtu(struct net_device *dev, int new_mtu)
dev->mtu = new_mtu;
if (netif_running(dev)) {
- s2io_card_down(sp, 0);
+ s2io_card_down(sp);
netif_stop_queue(dev);
if (s2io_card_up(sp)) {
DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
@@ -6216,43 +6105,106 @@ static int rxd_owner_bit_reset(nic_t *sp)
}
-static void s2io_card_down(nic_t * sp, int flag)
+static int s2io_add_isr(nic_t * sp)
{
- int cnt = 0;
- XENA_dev_config_t __iomem *bar0 = sp->bar0;
- unsigned long flags;
- register u64 val64 = 0;
+ int ret = 0;
struct net_device *dev = sp->dev;
+ int err = 0;
- del_timer_sync(&sp->alarm_timer);
- /* If s2io_set_link task is executing, wait till it completes. */
- while (test_and_set_bit(0, &(sp->link_state))) {
- msleep(50);
+ if (sp->intr_type == MSI)
+ ret = s2io_enable_msi(sp);
+ else if (sp->intr_type == MSI_X)
+ ret = s2io_enable_msi_x(sp);
+ if (ret) {
+ DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
+ sp->intr_type = INTA;
}
- atomic_set(&sp->card_state, CARD_DOWN);
- /* disable Tx and Rx traffic on the NIC */
- stop_nic(sp);
- if (flag) {
- if (sp->intr_type == MSI_X) {
- int i;
- u16 msi_control;
+ /* Store the values of the MSIX table in the nic_t structure */
+ store_xmsi_data(sp);
- for (i=1; (sp->s2io_entries[i].in_use ==
- MSIX_REGISTERED_SUCCESS); i++) {
- int vector = sp->entries[i].vector;
- void *arg = sp->s2io_entries[i].arg;
+ /* After proper initialization of H/W, register ISR */
+ if (sp->intr_type == MSI) {
+ err = request_irq((int) sp->pdev->irq, s2io_msi_handle,
+ IRQF_SHARED, sp->name, dev);
+ if (err) {
+ pci_disable_msi(sp->pdev);
+ DBG_PRINT(ERR_DBG, "%s: MSI registration failed\n",
+ dev->name);
+ return -1;
+ }
+ }
+ if (sp->intr_type == MSI_X) {
+ int i;
- free_irq(vector, arg);
+ for (i=1; (sp->s2io_entries[i].in_use == MSIX_FLG); i++) {
+ if (sp->s2io_entries[i].type == MSIX_FIFO_TYPE) {
+ sprintf(sp->desc[i], "%s:MSI-X-%d-TX",
+ dev->name, i);
+ err = request_irq(sp->entries[i].vector,
+ s2io_msix_fifo_handle, 0, sp->desc[i],
+ sp->s2io_entries[i].arg);
+ DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc[i],
+ (unsigned long long)sp->msix_info[i].addr);
+ } else {
+ sprintf(sp->desc[i], "%s:MSI-X-%d-RX",
+ dev->name, i);
+ err = request_irq(sp->entries[i].vector,
+ s2io_msix_ring_handle, 0, sp->desc[i],
+ sp->s2io_entries[i].arg);
+ DBG_PRINT(ERR_DBG, "%s @ 0x%llx\n", sp->desc[i],
+ (unsigned long long)sp->msix_info[i].addr);
}
- pci_read_config_word(sp->pdev, 0x42, &msi_control);
- msi_control &= 0xFFFE; /* Disable MSI */
- pci_write_config_word(sp->pdev, 0x42, msi_control);
- pci_disable_msix(sp->pdev);
- } else {
- free_irq(sp->pdev->irq, dev);
- if (sp->intr_type == MSI)
- pci_disable_msi(sp->pdev);
+ if (err) {
+ DBG_PRINT(ERR_DBG,"%s:MSI-X-%d registration "
+ "failed\n", dev->name, i);
+ DBG_PRINT(ERR_DBG, "Returned: %d\n", err);
+ return -1;
+ }
+ sp->s2io_entries[i].in_use = MSIX_REGISTERED_SUCCESS;
+ }
+ }
+ if (sp->intr_type == INTA) {
+ err = request_irq((int) sp->pdev->irq, s2io_isr, IRQF_SHARED,
+ sp->name, dev);
+ if (err) {
+ DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
+ dev->name);
+ return -1;
+ }
+ }
+ return 0;
+}
+static void s2io_rem_isr(nic_t * sp)
+{
+ int cnt = 0;
+ struct net_device *dev = sp->dev;
+
+ if (sp->intr_type == MSI_X) {
+ int i;
+ u16 msi_control;
+
+ for (i=1; (sp->s2io_entries[i].in_use ==
+ MSIX_REGISTERED_SUCCESS); i++) {
+ int vector = sp->entries[i].vector;
+ void *arg = sp->s2io_entries[i].arg;
+
+ free_irq(vector, arg);
+ }
+ pci_read_config_word(sp->pdev, 0x42, &msi_control);
+ msi_control &= 0xFFFE; /* Disable MSI */
+ pci_write_config_word(sp->pdev, 0x42, msi_control);
+
+ pci_disable_msix(sp->pdev);
+ } else {
+ free_irq(sp->pdev->irq, dev);
+ if (sp->intr_type == MSI) {
+ u16 val;
+
+ pci_disable_msi(sp->pdev);
+ pci_read_config_word(sp->pdev, 0x4c, &val);
+ val ^= 0x1;
+ pci_write_config_word(sp->pdev, 0x4c, val);
}
}
/* Waiting till all Interrupt handlers are complete */
@@ -6263,6 +6215,26 @@ static void s2io_card_down(nic_t * sp, int flag)
break;
cnt++;
} while(cnt < 5);
+}
+
+static void s2io_card_down(nic_t * sp)
+{
+ int cnt = 0;
+ XENA_dev_config_t __iomem *bar0 = sp->bar0;
+ unsigned long flags;
+ register u64 val64 = 0;
+
+ del_timer_sync(&sp->alarm_timer);
+ /* If s2io_set_link task is executing, wait till it completes. */
+ while (test_and_set_bit(0, &(sp->link_state))) {
+ msleep(50);
+ }
+ atomic_set(&sp->card_state, CARD_DOWN);
+
+ /* disable Tx and Rx traffic on the NIC */
+ stop_nic(sp);
+
+ s2io_rem_isr(sp);
/* Kill tasklet. */
tasklet_kill(&sp->task);
@@ -6314,23 +6286,16 @@ static int s2io_card_up(nic_t * sp)
mac_info_t *mac_control;
struct config_param *config;
struct net_device *dev = (struct net_device *) sp->dev;
+ u16 interruptible;
/* Initialize the H/W I/O registers */
if (init_nic(sp) != 0) {
DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
dev->name);
+ s2io_reset(sp);
return -ENODEV;
}
- if (sp->intr_type == MSI)
- ret = s2io_enable_msi(sp);
- else if (sp->intr_type == MSI_X)
- ret = s2io_enable_msi_x(sp);
- if (ret) {
- DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
- sp->intr_type = INTA;
- }
-
/*
* Initializing the Rx buffers. For now we are considering only 1
* Rx ring and initializing buffers into 30 Rx blocks
@@ -6354,28 +6319,46 @@ static int s2io_card_up(nic_t * sp)
s2io_set_multicast(dev);
if (sp->lro) {
- /* Initialize max aggregatable pkts based on MTU */
+ /* Initialize max aggregatable pkts per session based on MTU */
sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
/* Check if we can use(if specified) user provided value */
if (lro_max_pkts < sp->lro_max_aggr_per_sess)
sp->lro_max_aggr_per_sess = lro_max_pkts;
}
- /* Enable tasklet for the device */
- tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev);
-
/* Enable Rx Traffic and interrupts on the NIC */
if (start_nic(sp)) {
DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
- tasklet_kill(&sp->task);
s2io_reset(sp);
- free_irq(dev->irq, dev);
+ free_rx_buffers(sp);
+ return -ENODEV;
+ }
+
+ /* Add interrupt service routine */
+ if (s2io_add_isr(sp) != 0) {
+ if (sp->intr_type == MSI_X)
+ s2io_rem_isr(sp);
+ s2io_reset(sp);
free_rx_buffers(sp);
return -ENODEV;
}
S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2));
+ /* Enable tasklet for the device */
+ tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev);
+
+ /* Enable select interrupts */
+ if (sp->intr_type != INTA)
+ en_dis_able_nic_intrs(sp, ENA_ALL_INTRS, DISABLE_INTRS);
+ else {
+ interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
+ interruptible |= TX_PIC_INTR | RX_PIC_INTR;
+ interruptible |= TX_MAC_INTR | RX_MAC_INTR;
+ en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
+ }
+
+
atomic_set(&sp->card_state, CARD_UP);
return 0;
}
@@ -6395,7 +6378,7 @@ static void s2io_restart_nic(unsigned long data)
struct net_device *dev = (struct net_device *) data;
nic_t *sp = dev->priv;
- s2io_card_down(sp, 0);
+ s2io_card_down(sp);
if (s2io_card_up(sp)) {
DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
dev->name);
@@ -6437,7 +6420,7 @@ static void s2io_tx_watchdog(struct net_device *dev)
* @cksum : FCS checksum of the frame.
* @ring_no : the ring from which this RxD was extracted.
* Description:
- * This function is called by the Tx interrupt serivce routine to perform
+ * This function is called by the Rx interrupt serivce routine to perform
* some OS related operations on the SKB before passing it to the upper
* layers. It mainly checks if the checksum is OK, if so adds it to the
* SKBs cksum variable, increments the Rx packet count and passes the SKB
@@ -6697,33 +6680,6 @@ static void s2io_init_pci(nic_t * sp)
pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
}
-MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-module_param(tx_fifo_num, int, 0);
-module_param(rx_ring_num, int, 0);
-module_param(rx_ring_mode, int, 0);
-module_param_array(tx_fifo_len, uint, NULL, 0);
-module_param_array(rx_ring_sz, uint, NULL, 0);
-module_param_array(rts_frm_len, uint, NULL, 0);
-module_param(use_continuous_tx_intrs, int, 1);
-module_param(rmac_pause_time, int, 0);
-module_param(mc_pause_threshold_q0q3, int, 0);
-module_param(mc_pause_threshold_q4q7, int, 0);
-module_param(shared_splits, int, 0);
-module_param(tmac_util_period, int, 0);
-module_param(rmac_util_period, int, 0);
-module_param(bimodal, bool, 0);
-module_param(l3l4hdr_size, int , 0);
-#ifndef CONFIG_S2IO_NAPI
-module_param(indicate_max_pkts, int, 0);
-#endif
-module_param(rxsync_frequency, int, 0);
-module_param(intr_type, int, 0);
-module_param(lro, int, 0);
-module_param(lro_max_pkts, int, 0);
-
static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
{
if ( tx_fifo_num > 8) {
@@ -6831,8 +6787,8 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
}
if (dev_intr_type != MSI_X) {
if (pci_request_regions(pdev, s2io_driver_name)) {
- DBG_PRINT(ERR_DBG, "Request Regions failed\n"),
- pci_disable_device(pdev);
+ DBG_PRINT(ERR_DBG, "Request Regions failed\n");
+ pci_disable_device(pdev);
return -ENODEV;
}
}
@@ -6956,7 +6912,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
/* initialize the shared memory used by the NIC and the host */
if (init_shared_mem(sp)) {
DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n",
- __FUNCTION__);
+ dev->name);
ret = -ENOMEM;
goto mem_alloc_failed;
}
@@ -7093,6 +7049,9 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
dev->addr_len = ETH_ALEN;
memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
+ /* reset Nic and bring it to known state */
+ s2io_reset(sp);
+
/*
* Initialize the tasklet status and link state flags
* and the card state parameter
@@ -7130,11 +7089,11 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
goto register_failed;
}
s2io_vpd_read(sp);
- DBG_PRINT(ERR_DBG, "%s: Neterion %s",dev->name, sp->product_name);
- DBG_PRINT(ERR_DBG, "(rev %d), Driver version %s\n",
- get_xena_rev_id(sp->pdev),
- s2io_driver_version);
DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2005 Neterion Inc.\n");
+ DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n",dev->name,
+ sp->product_name, get_xena_rev_id(sp->pdev));
+ DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
+ s2io_driver_version);
DBG_PRINT(ERR_DBG, "%s: MAC ADDR: "
"%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name,
sp->def_mac_addr[0].mac_addr[0],
@@ -7435,8 +7394,13 @@ static int verify_l3_l4_lro_capable(lro_t *l_lro, struct iphdr *ip,
if (ip->ihl != 5) /* IP has options */
return -1;
+ /* If we see CE codepoint in IP header, packet is not mergeable */
+ if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
+ return -1;
+
+ /* If we see ECE or CWR flags in TCP header, packet is not mergeable */
if (tcp->urg || tcp->psh || tcp->rst || tcp->syn || tcp->fin ||
- !tcp->ack) {
+ tcp->ece || tcp->cwr || !tcp->ack) {
/*
* Currently recognize only the ack control word and
* any other control field being set would result in
@@ -7590,18 +7554,16 @@ static void queue_rx_frame(struct sk_buff *skb)
static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb,
u32 tcp_len)
{
- struct sk_buff *tmp, *first = lro->parent;
+ struct sk_buff *first = lro->parent;
first->len += tcp_len;
first->data_len = lro->frags_len;
skb_pull(skb, (skb->len - tcp_len));
- if ((tmp = skb_shinfo(first)->frag_list)) {
- while (tmp->next)
- tmp = tmp->next;
- tmp->next = skb;
- }
+ if (skb_shinfo(first)->frag_list)
+ lro->last_frag->next = skb;
else
skb_shinfo(first)->frag_list = skb;
+ lro->last_frag = skb;
sp->mac_control.stats_info->sw_stat.clubbed_frms_cnt++;
return;
}
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-18 16:55:15 +0000