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Date: Mon, 23 Jun 2008 14:36:00 +0300 (EEST)
From: Pekka J Enberg <penberg@...helsinki.fi>
To: romieu@...zoreil.com
cc: sorbica@...lus.com.tw, jesse@...lus.com.tw, Bircoph@...t.ru,
shemminger@...tta.com, netdev@...r.kernel.org
Subject: [PATCH 05/08] ipg: per-device rxfrag_size
From: Pekka Enberg <penberg@...helsinki.fi>
Add a ->max_rxframe member to struct ipg_nic_private and convert the users of
IPG_RXFRAG_SIZE to use it instead to enable per-device jumbo frame
configuration.
Tested-by: Andrew Savchenko <Bircoph@...t.ru>
Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
---
drivers/net/ipg.c | 25 +++++++++++--------------
drivers/net/ipg.h | 1 +
2 files changed, 12 insertions(+), 14 deletions(-)
Index: linux-2.6/drivers/net/ipg.c
===================================================================
--- linux-2.6.orig/drivers/net/ipg.c
+++ linux-2.6/drivers/net/ipg.c
@@ -751,7 +751,7 @@ static int ipg_get_rxbuff(struct net_dev
sp->rx_buf_sz, PCI_DMA_FROMDEVICE));
/* Set the RFD fragment length. */
- rxfragsize = IPG_RXFRAG_SIZE;
+ rxfragsize = sp->rxfrag_size;
rxfd->frag_info |= cpu_to_le64((rxfragsize << 48) & IPG_RFI_FRAGLEN);
return 0;
@@ -1207,8 +1207,8 @@ static void ipg_nic_rx_with_start_and_en
/* accept this frame and send to upper layer */
framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
- if (framelen > IPG_RXFRAG_SIZE)
- framelen = IPG_RXFRAG_SIZE;
+ if (framelen > sp->rxfrag_size)
+ framelen = sp->rxfrag_size;
skb_put(skb, framelen);
skb->protocol = eth_type_trans(skb, dev);
@@ -1241,10 +1241,10 @@ static void ipg_nic_rx_with_start(struct
pci_unmap_single(pdev, le64_to_cpu(rxfd->frag_info & ~IPG_RFI_FRAGLEN),
sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
- skb_put(skb, IPG_RXFRAG_SIZE);
+ skb_put(skb, sp->rxfrag_size);
jumbo->found_start = 1;
- jumbo->current_size = IPG_RXFRAG_SIZE;
+ jumbo->current_size = sp->rxfrag_size;
jumbo->skb = skb;
sp->rx_buff[entry] = NULL;
@@ -1270,10 +1270,6 @@ static void ipg_nic_rx_with_end(struct n
framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
endframelen = framelen - jumbo->current_size;
- /*
- if (framelen > IPG_RXFRAG_SIZE)
- framelen=IPG_RXFRAG_SIZE;
- */
if (framelen > IPG_RXSUPPORT_SIZE)
dev_kfree_skb_irq(jumbo->skb);
else {
@@ -1314,11 +1310,11 @@ static void ipg_nic_rx_no_start_no_end(s
if (skb) {
if (jumbo->found_start) {
- jumbo->current_size += IPG_RXFRAG_SIZE;
+ jumbo->current_size += sp->rxfrag_size;
if (jumbo->current_size <= IPG_RXSUPPORT_SIZE) {
memcpy(skb_put(jumbo->skb,
- IPG_RXFRAG_SIZE),
- skb->data, IPG_RXFRAG_SIZE);
+ sp->rxfrag_size),
+ skb->data, sp->rxfrag_size);
}
}
dev->last_rx = jiffies;
@@ -1410,11 +1406,11 @@ static int ipg_nic_rx(struct net_device
/* Check for jumbo frame arrival with too small
* RXFRAG_SIZE.
*/
- if (framelen > IPG_RXFRAG_SIZE) {
+ if (framelen > sp->rxfrag_size) {
IPG_DEBUG_MSG
("RFS FrameLen > allocated fragment size.\n");
- framelen = IPG_RXFRAG_SIZE;
+ framelen = sp->rxfrag_size;
}
if ((IPG_DROP_ON_RX_ETH_ERRORS && (le64_to_cpu(rxfd->rfs) &
@@ -2240,6 +2236,7 @@ static int __devinit ipg_probe(struct pc
mutex_init(&sp->mii_mutex);
sp->is_jumbo = IPG_JUMBO;
+ sp->rxfrag_size = IPG_RXFRAG_SIZE;
/* Declare IPG NIC functions for Ethernet device methods.
*/
Index: linux-2.6/drivers/net/ipg.h
===================================================================
--- linux-2.6.orig/drivers/net/ipg.h
+++ linux-2.6/drivers/net/ipg.h
@@ -796,6 +796,7 @@ struct ipg_nic_private {
unsigned int rx_dirty;
bool is_jumbo;
struct ipg_jumbo jumbo;
+ unsigned long rxfrag_size;
unsigned int rx_buf_sz;
struct pci_dev *pdev;
struct net_device *dev;
--
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