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Subject[RFC/PATCH] ipg: add jumbo frame support kconfig option
From: Pekka Enberg <penberg@cs.helsinki.fi>

Convert the internal JUMBO_FRAME #ifdef to CONFIG_IP1000_JUMBO_FRAME proper and
fix compilation errors.

Cc: Francois Romieu <romieu@fr.zoreil.com>
Cc: Sorbica Shieh <sorbica@icplus.com.tw>
Cc: Jesse Huang <jesse@icplus.com.tw>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---
drivers/net/Kconfig | 8 ++++++++
drivers/net/ipg.c | 21 ++++++++++-----------
drivers/net/ipg.h | 11 ++++++-----
3 files changed, 24 insertions(+), 16 deletions(-)
Index: linux-2.6/drivers/net/Kconfig
===================================================================
--- linux-2.6.orig/drivers/net/Kconfig
+++ linux-2.6/drivers/net/Kconfig
@@ -2029,6 +2029,14 @@ config IP1000
To compile this driver as a module, choose M here: the module
will be called ipg. This is recommended.

+config IP1000_JUMBO_FRAME
+ bool "Support for jumbo frames (EXPERIMENTAL)"
+ depends on IP1000 && EXPERIMENTAL
+ help
+ This option enables jumbo frame support for the IP1000 driver.
+
+ If in doubt, say N.
+
config IGB
tristate "Intel(R) 82575 PCI-Express Gigabit Ethernet support"
depends on PCI
Index: linux-2.6/drivers/net/ipg.c
===================================================================
--- linux-2.6.orig/drivers/net/ipg.c
+++ linux-2.6/drivers/net/ipg.c
@@ -42,7 +42,6 @@
#define ipg_r16(reg) ioread16(ioaddr + (reg))
#define ipg_r8(reg) ioread8(ioaddr + (reg))

-#define JUMBO_FRAME_4k_ONLY
enum {
netdev_io_size = 128
};
@@ -1079,7 +1078,7 @@ static int ipg_nic_rxrestore(struct net_
return 0;
}

-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME

/* use jumboindex and jumbosize to control jumbo frame status
* initial status is jumboindex=-1 and jumbosize=0
@@ -1274,7 +1273,7 @@ static void ipg_nic_rx_with_end(struct n

framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;

- endframeLen = framelen - jumbo->current_size;
+ endframelen = framelen - jumbo->current_size;
/*
if (framelen > IPG_RXFRAG_SIZE)
framelen=IPG_RXFRAG_SIZE;
@@ -1282,8 +1281,8 @@ static void ipg_nic_rx_with_end(struct n
if (framelen > IPG_RXSUPPORT_SIZE)
dev_kfree_skb_irq(jumbo->skb);
else {
- memcpy(skb_put(jumbo->skb, endframeLen),
- skb->data, endframeLen);
+ memcpy(skb_put(jumbo->skb, endframelen),
+ skb->data, endframelen);

jumbo->skb->protocol =
eth_type_trans(jumbo->skb, dev);
@@ -1355,16 +1354,16 @@ static int ipg_nic_rx(struct net_device

switch (ipg_nic_rx_check_frame_type(dev)) {
case FRAME_WITH_START_WITH_END:
- ipg_nic_rx_with_start_and_end(dev, tp, rxfd, entry);
+ ipg_nic_rx_with_start_and_end(dev, sp, rxfd, entry);
break;
case FRAME_WITH_START:
- ipg_nic_rx_with_start(dev, tp, rxfd, entry);
+ ipg_nic_rx_with_start(dev, sp, rxfd, entry);
break;
case FRAME_WITH_END:
- ipg_nic_rx_with_end(dev, tp, rxfd, entry);
+ ipg_nic_rx_with_end(dev, sp, rxfd, entry);
break;
case FRAME_NO_START_NO_END:
- ipg_nic_rx_no_start_no_end(dev, tp, rxfd, entry);
+ ipg_nic_rx_no_start_no_end(dev, sp, rxfd, entry);
break;
}
}
@@ -1595,7 +1594,7 @@ static irqreturn_t ipg_interrupt_handler

IPG_DEBUG_MSG("_interrupt_handler\n");

-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
ipg_nic_rxrestore(dev);
#endif
spin_lock(&sp->lock);
@@ -1807,7 +1806,7 @@ static int ipg_nic_open(struct net_devic
if (ipg_config_autoneg(dev) < 0)
printk(KERN_INFO "%s: Auto-negotiation error.\n", dev->name);

-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
/* initialize JUMBO Frame control variable */
sp->jumbo.found_start = 0;
sp->jumbo.current_size = 0;
Index: linux-2.6/drivers/net/ipg.h
===================================================================
--- linux-2.6.orig/drivers/net/ipg.h
+++ linux-2.6/drivers/net/ipg.h
@@ -536,7 +536,7 @@ enum ipg_regs {
*/
#define IPG_FRAMESBETWEENTXDMACOMPLETES 0x1

-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME

# ifdef JUMBO_FRAME_SIZE_2K
# define JUMBO_FRAME_SIZE 2048
@@ -575,6 +575,7 @@ enum ipg_regs {
# define __IPG_RXFRAG_SIZE 4088
# else
# define JUMBO_FRAME_SIZE 4096
+# define __IPG_RXFRAG_SIZE 4088
# endif
# endif
# endif
@@ -589,7 +590,7 @@ enum ipg_regs {
/* Size of allocated received buffers. Nominally 0x0600.
* Define larger if expecting jumbo frames.
*/
-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
/* IPG_TXFRAG_SIZE must <= 0x2b00, or TX will crash */
#define IPG_TXFRAG_SIZE JUMBO_FRAME_SIZE
#endif
@@ -597,7 +598,7 @@ enum ipg_regs {
/* Size of allocated received buffers. Nominally 0x0600.
* Define larger if expecting jumbo frames.
*/
-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
/* 4088 = 4096 - 8 */
#define IPG_RXFRAG_SIZE __IPG_RXFRAG_SIZE
#define IPG_RXSUPPORT_SIZE IPG_MAX_RXFRAME_SIZE
@@ -607,7 +608,7 @@ enum ipg_regs {
#endif

/* IPG_MAX_RXFRAME_SIZE <= IPG_RXFRAG_SIZE */
-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
#define IPG_MAX_RXFRAME_SIZE JUMBO_FRAME_SIZE
#else
#define IPG_MAX_RXFRAME_SIZE 0x0600
@@ -786,7 +787,7 @@ struct ipg_nic_private {
unsigned int tx_dirty;
unsigned int rx_current;
unsigned int rx_dirty;
-#ifdef JUMBO_FRAME
+#ifdef CONFIG_IP1000_JUMBO_FRAME
struct ipg_jumbo jumbo;
#endif
unsigned int rx_buf_sz;

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