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Bug 62685

Summary: Broken driver for Packet Engines GNIC-2 (hamachi) network card
Product: [Retired] Red Hat Public Beta Reporter: keithu <keithu>
Component: kernelAssignee: Arjan van de Ven <arjanv>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: skipjack-beta1   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2002-04-04 14:34:15 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description keithu@parl.clemson.edu 2002-04-04 14:34:08 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.79 [en] (X11; U; Linux 2.4.18-0.4 i686)

Description of problem:
Most versions of the 2.4 kernel have a broken driver for the packet engines
GNIC-2 (hamachi) gigabit ethernet card.  I submitted a patch to Jeff Garzik for
the main kernel tree, but I want to make sure that this patch makes it into the
RH 7.3 release kernel.  

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.try using a hamachi gigE card
2.
3.
	

Actual Results:  It cannot receive packets.

Expected Results:  It should receive packets.

Additional info:

Here is the patch:

--- drivers/net/hamachi.c       Mon Feb 25 14:37:59 2002
+++ drivers/net/hamachi.patched.c       Tue Apr  2 15:32:45 2002
@@ -210,8 +210,10 @@
 /* Condensed bus+endian portability operations. */
 #if ADDRLEN == 64
 #define cpu_to_leXX(addr)      cpu_to_le64(addr)
+#define desc_to_virt(addr) bus_to_virt(le64_to_cpu(addr))
 #else 
 #define cpu_to_leXX(addr)      cpu_to_le32(addr)
+#define desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr))
 #endif   
 
 
@@ -1544,7 +1546,8 @@
                        break;
                pci_dma_sync_single(hmp->pci_dev, desc->addr, hmp->rx_buf_sz, 
                        PCI_DMA_FROMDEVICE);
-               buf_addr = (u8 *)hmp->rx_ring + entry*sizeof(*desc);
+               //buf_addr = (u8 *)hmp->rx_ring + entry*sizeof(*desc);
+               buf_addr = desc_to_virt(desc->addr);
                frame_status =
le32_to_cpu(get_unaligned((s32*)&(buf_addr[data_size - 12])));
                if (hamachi_debug > 4)
                        printk(KERN_DEBUG "  hamachi_rx() status was %8.8x.\n",

Comment 1 Arjan van de Ven 2002-04-05 11:02:28 UTC
Thanks for the heads up; added.