ipg: per-device rxfrag_size

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@list.ru>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

2 files changed, 12 insertions, 14 deletions

diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c
index 40ce90dedb02..5c5653bd48c1 100644
--- a/drivers/net/ipg.c
+++ b/drivers/net/ipg.c
@@ -751,7 +751,7 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry)
                 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_end(struct net_device *dev,
 
         /* 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 net_device *dev,
         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 net_device *dev,
                         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(struct net_device *dev,
 
                 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 *dev)
                 /* 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 pci_dev *pdev,
         mutex_init(&sp->mii_mutex);
 
         sp->is_jumbo = IPG_JUMBO;
+        sp->rxfrag_size = IPG_RXFRAG_SIZE;
 
         /* Declare IPG NIC functions for Ethernet device methods.
          */
diff --git a/drivers/net/ipg.h b/drivers/net/ipg.h
index 9c520ce264a6..83e311ebf0cb 100644
--- a/drivers/net/ipg.h
+++ b/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;