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Message-Id: <1314139240-869-3-git-send-email-mark.einon@gmail.com>
Date: Tue, 23 Aug 2011 23:40:34 +0100
From: Mark Einon <mark.einon@...il.com>
To: gregkh@...e.de
Cc: greg@...ah.com, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, o.hartmann@...ovital.com,
Mark Einon <mark.einon@...il.com>
Subject: [PATCH 2/8] [RESEND] staging: et131x: Converting et1310_tx.c function and local names from CamelCase
Also some minor code clean-ups.
Tested on an ET-131x device.
Signed-off-by: Mark Einon <mark.einon@...il.com>
---
drivers/staging/et131x/et1310_tx.c | 268 +++++++++++++++----------------
drivers/staging/et131x/et131x.h | 2 +-
drivers/staging/et131x/et131x_initpci.c | 2 +-
3 files changed, 132 insertions(+), 140 deletions(-)
diff --git a/drivers/staging/et131x/et1310_tx.c b/drivers/staging/et131x/et1310_tx.c
index 8fb3051..da9b4af 100644
--- a/drivers/staging/et131x/et1310_tx.c
+++ b/drivers/staging/et131x/et1310_tx.c
@@ -88,12 +88,6 @@
#include "et1310_tx.h"
#include "et131x.h"
-static inline void et131x_free_send_packet(struct et131x_adapter *etdev,
- struct tcb *tcb);
-static int et131x_send_packet(struct sk_buff *skb,
- struct et131x_adapter *etdev);
-static int nic_send_packet(struct et131x_adapter *etdev, struct tcb *tcb);
-
/**
* et131x_tx_dma_memory_alloc
* @adapter: pointer to our private adapter structure
@@ -186,13 +180,13 @@ void et131x_tx_dma_memory_free(struct et131x_adapter *adapter)
}
/**
- * ConfigTxDmaRegs - Set up the tx dma section of the JAGCore.
+ * et131x_config_tx_dma_regs - Set up the tx dma section of the JAGCore.
* @etdev: pointer to our private adapter structure
*
* Configure the transmit engine with the ring buffers we have created
* and prepare it for use.
*/
-void ConfigTxDmaRegs(struct et131x_adapter *etdev)
+void et131x_config_tx_dma_regs(struct et131x_adapter *etdev)
{
struct txdma_regs __iomem *txdma = &etdev->regs->txdma;
@@ -277,131 +271,6 @@ void et131x_init_send(struct et131x_adapter *adapter)
}
/**
- * et131x_send_packets - This function is called by the OS to send packets
- * @skb: the packet(s) to send
- * @netdev:device on which to TX the above packet(s)
- *
- * Return 0 in almost all cases; non-zero value in extreme hard failure only
- */
-int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev)
-{
- int status = 0;
- struct et131x_adapter *etdev = NULL;
-
- etdev = netdev_priv(netdev);
-
- /* Send these packets
- *
- * NOTE: The Linux Tx entry point is only given one packet at a time
- * to Tx, so the PacketCount and it's array used makes no sense here
- */
-
- /* TCB is not available */
- if (etdev->tx_ring.used >= NUM_TCB) {
- /* NOTE: If there's an error on send, no need to queue the
- * packet under Linux; if we just send an error up to the
- * netif layer, it will resend the skb to us.
- */
- status = -ENOMEM;
- } else {
- /* We need to see if the link is up; if it's not, make the
- * netif layer think we're good and drop the packet
- */
- if ((etdev->flags & fMP_ADAPTER_FAIL_SEND_MASK) ||
- !netif_carrier_ok(netdev)) {
- dev_kfree_skb_any(skb);
- skb = NULL;
-
- etdev->net_stats.tx_dropped++;
- } else {
- status = et131x_send_packet(skb, etdev);
- if (status != 0 && status != -ENOMEM) {
- /* On any other error, make netif think we're
- * OK and drop the packet
- */
- dev_kfree_skb_any(skb);
- skb = NULL;
- etdev->net_stats.tx_dropped++;
- }
- }
- }
- return status;
-}
-
-/**
- * et131x_send_packet - Do the work to send a packet
- * @skb: the packet(s) to send
- * @etdev: a pointer to the device's private adapter structure
- *
- * Return 0 in almost all cases; non-zero value in extreme hard failure only.
- *
- * Assumption: Send spinlock has been acquired
- */
-static int et131x_send_packet(struct sk_buff *skb,
- struct et131x_adapter *etdev)
-{
- int status;
- struct tcb *tcb = NULL;
- u16 *shbufva;
- unsigned long flags;
-
- /* All packets must have at least a MAC address and a protocol type */
- if (skb->len < ETH_HLEN)
- return -EIO;
-
- /* Get a TCB for this packet */
- spin_lock_irqsave(&etdev->TCBReadyQLock, flags);
-
- tcb = etdev->tx_ring.tcb_qhead;
-
- if (tcb == NULL) {
- spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
- return -ENOMEM;
- }
-
- etdev->tx_ring.tcb_qhead = tcb->next;
-
- if (etdev->tx_ring.tcb_qhead == NULL)
- etdev->tx_ring.tcb_qtail = NULL;
-
- spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
-
- tcb->skb = skb;
-
- if (skb->data != NULL && skb->len - skb->data_len >= 6) {
- shbufva = (u16 *) skb->data;
-
- if ((shbufva[0] == 0xffff) &&
- (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) {
- tcb->flags |= fMP_DEST_BROAD;
- } else if ((shbufva[0] & 0x3) == 0x0001) {
- tcb->flags |= fMP_DEST_MULTI;
- }
- }
-
- tcb->next = NULL;
-
- /* Call the NIC specific send handler. */
- status = nic_send_packet(etdev, tcb);
-
- if (status != 0) {
- spin_lock_irqsave(&etdev->TCBReadyQLock, flags);
-
- if (etdev->tx_ring.tcb_qtail)
- etdev->tx_ring.tcb_qtail->next = tcb;
- else
- /* Apparently ready Q is empty. */
- etdev->tx_ring.tcb_qhead = tcb;
-
- etdev->tx_ring.tcb_qtail = tcb;
- spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
- return status;
- }
- WARN_ON(etdev->tx_ring.used > NUM_TCB);
- return 0;
-}
-
-/**
* nic_send_packet - NIC specific send handler for version B silicon.
* @etdev: pointer to our adapter
* @tcb: pointer to struct tcb
@@ -618,16 +487,139 @@ static int nic_send_packet(struct et131x_adapter *etdev, struct tcb *tcb)
return 0;
}
+/**
+ * send_packet - Do the work to send a packet
+ * @skb: the packet(s) to send
+ * @etdev: a pointer to the device's private adapter structure
+ *
+ * Return 0 in almost all cases; non-zero value in extreme hard failure only.
+ *
+ * Assumption: Send spinlock has been acquired
+ */
+static int send_packet(struct sk_buff *skb, struct et131x_adapter *etdev)
+{
+ int status;
+ struct tcb *tcb = NULL;
+ u16 *shbufva;
+ unsigned long flags;
+
+ /* All packets must have at least a MAC address and a protocol type */
+ if (skb->len < ETH_HLEN)
+ return -EIO;
+
+ /* Get a TCB for this packet */
+ spin_lock_irqsave(&etdev->TCBReadyQLock, flags);
+
+ tcb = etdev->tx_ring.tcb_qhead;
+
+ if (tcb == NULL) {
+ spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
+ return -ENOMEM;
+ }
+
+ etdev->tx_ring.tcb_qhead = tcb->next;
+
+ if (etdev->tx_ring.tcb_qhead == NULL)
+ etdev->tx_ring.tcb_qtail = NULL;
+
+ spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
+
+ tcb->skb = skb;
+
+ if (skb->data != NULL && skb->len - skb->data_len >= 6) {
+ shbufva = (u16 *) skb->data;
+
+ if ((shbufva[0] == 0xffff) &&
+ (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) {
+ tcb->flags |= fMP_DEST_BROAD;
+ } else if ((shbufva[0] & 0x3) == 0x0001) {
+ tcb->flags |= fMP_DEST_MULTI;
+ }
+ }
+
+ tcb->next = NULL;
+
+ /* Call the NIC specific send handler. */
+ status = nic_send_packet(etdev, tcb);
+
+ if (status != 0) {
+ spin_lock_irqsave(&etdev->TCBReadyQLock, flags);
+
+ if (etdev->tx_ring.tcb_qtail)
+ etdev->tx_ring.tcb_qtail->next = tcb;
+ else
+ /* Apparently ready Q is empty. */
+ etdev->tx_ring.tcb_qhead = tcb;
+
+ etdev->tx_ring.tcb_qtail = tcb;
+ spin_unlock_irqrestore(&etdev->TCBReadyQLock, flags);
+ return status;
+ }
+ WARN_ON(etdev->tx_ring.used > NUM_TCB);
+ return 0;
+}
+
+/**
+ * et131x_send_packets - This function is called by the OS to send packets
+ * @skb: the packet(s) to send
+ * @netdev:device on which to TX the above packet(s)
+ *
+ * Return 0 in almost all cases; non-zero value in extreme hard failure only
+ */
+int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev)
+{
+ int status = 0;
+ struct et131x_adapter *etdev = NULL;
+
+ etdev = netdev_priv(netdev);
+
+ /* Send these packets
+ *
+ * NOTE: The Linux Tx entry point is only given one packet at a time
+ * to Tx, so the PacketCount and it's array used makes no sense here
+ */
+
+ /* TCB is not available */
+ if (etdev->tx_ring.used >= NUM_TCB) {
+ /* NOTE: If there's an error on send, no need to queue the
+ * packet under Linux; if we just send an error up to the
+ * netif layer, it will resend the skb to us.
+ */
+ status = -ENOMEM;
+ } else {
+ /* We need to see if the link is up; if it's not, make the
+ * netif layer think we're good and drop the packet
+ */
+ if ((etdev->flags & fMP_ADAPTER_FAIL_SEND_MASK) ||
+ !netif_carrier_ok(netdev)) {
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+
+ etdev->net_stats.tx_dropped++;
+ } else {
+ status = send_packet(skb, etdev);
+ if (status != 0 && status != -ENOMEM) {
+ /* On any other error, make netif think we're
+ * OK and drop the packet
+ */
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ etdev->net_stats.tx_dropped++;
+ }
+ }
+ }
+ return status;
+}
/**
- * et131x_free_send_packet - Recycle a struct tcb
+ * free_send_packet - Recycle a struct tcb
* @etdev: pointer to our adapter
* @tcb: pointer to struct tcb
*
* Complete the packet if necessary
* Assumption - Send spinlock has been acquired
*/
-inline void et131x_free_send_packet(struct et131x_adapter *etdev,
+static inline void free_send_packet(struct et131x_adapter *etdev,
struct tcb *tcb)
{
unsigned long flags;
@@ -717,7 +709,7 @@ void et131x_free_busy_send_packets(struct et131x_adapter *etdev)
spin_unlock_irqrestore(&etdev->TCBSendQLock, flags);
freed++;
- et131x_free_send_packet(etdev, tcb);
+ free_send_packet(etdev, tcb);
spin_lock_irqsave(&etdev->TCBSendQLock, flags);
@@ -766,7 +758,7 @@ void et131x_handle_send_interrupt(struct et131x_adapter *etdev)
etdev->tx_ring.send_tail = NULL;
spin_unlock_irqrestore(&etdev->TCBSendQLock, flags);
- et131x_free_send_packet(etdev, tcb);
+ free_send_packet(etdev, tcb);
spin_lock_irqsave(&etdev->TCBSendQLock, flags);
/* Goto the next packet */
@@ -781,7 +773,7 @@ void et131x_handle_send_interrupt(struct et131x_adapter *etdev)
etdev->tx_ring.send_tail = NULL;
spin_unlock_irqrestore(&etdev->TCBSendQLock, flags);
- et131x_free_send_packet(etdev, tcb);
+ free_send_packet(etdev, tcb);
spin_lock_irqsave(&etdev->TCBSendQLock, flags);
/* Goto the next packet */
diff --git a/drivers/staging/et131x/et131x.h b/drivers/staging/et131x/et131x.h
index fa42d94..91fafc0 100644
--- a/drivers/staging/et131x/et131x.h
+++ b/drivers/staging/et131x/et131x.h
@@ -137,7 +137,7 @@ void et131x_handle_recv_interrupt(struct et131x_adapter *adapter);
/* et131x_tx.c */
int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter);
void et131x_tx_dma_memory_free(struct et131x_adapter *adapter);
-void ConfigTxDmaRegs(struct et131x_adapter *adapter);
+void et131x_config_tx_dma_regs(struct et131x_adapter *adapter);
void et131x_init_send(struct et131x_adapter *adapter);
void et131x_tx_dma_disable(struct et131x_adapter *adapter);
void et131x_tx_dma_enable(struct et131x_adapter *adapter);
diff --git a/drivers/staging/et131x/et131x_initpci.c b/drivers/staging/et131x/et131x_initpci.c
index 09285b9..c217a05 100644
--- a/drivers/staging/et131x/et131x_initpci.c
+++ b/drivers/staging/et131x/et131x_initpci.c
@@ -389,7 +389,7 @@ int et131x_adapter_setup(struct et131x_adapter *etdev)
et1310_config_txmac_regs(etdev);
et131x_config_rx_dma_regs(etdev);
- ConfigTxDmaRegs(etdev);
+ et131x_config_tx_dma_regs(etdev);
et1310_config_macstat_regs(etdev);
--
1.7.6
--
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