diff -c -b vmxnet-only-orig/vmxnet.c vmxnet-only/vmxnet.c
*** vmxnet-only-orig/vmxnet.c	2007-03-30 13:54:46.000000000 -0400
--- vmxnet-only/vmxnet.c	2007-06-14 14:47:40.000000000 -0400
***************
*** 8,14 ****
--- 8,16 ----
  
  #include "driver-config.h"
  
+ #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
  #include <linux/config.h>
+ #endif
  #include <linux/module.h>
  
  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 9)
***************
*** 94,99 ****
--- 96,109 ----
  #endif
  #endif
  
+ #ifdef CHECKSUM_COMPLETE
+ // as of 2.6.18 they split CHECKSUM_HW into two
+ #define CHECK_IP_SUMMED(n) \
+    (((n) == CHECKSUM_COMPLETE) || ((n) == CHECKSUM_PARTIAL))
+ #else
+ #define CHECK_IP_SUMMED(n) ((n) == CHECKSUM_HW)
+ #endif
+ 
  /* Data structure used when determining what hardware the driver supports. */
  
  static const struct pci_device_id vmxnet_chips[] =
***************
*** 937,948 ****
  		                               tcpLen,
  		                               IPPROTO_TCP,
  		                               0);
           skb->ip_summed = CHECKSUM_HW;
        } 
     } 
  #endif
  
!    if (skb->ip_summed == CHECKSUM_HW) {
        xre->flags |= VMXNET2_TX_HW_XSUM;
     } else {
        xre->flags &= ~VMXNET2_TX_HW_XSUM;
--- 947,962 ----
  		                               tcpLen,
  		                               IPPROTO_TCP,
  		                               0);
+ #ifdef CHECKSUM_COMPLETE
+          skb->ip_summed = CHECKSUM_COMPLETE;
+ #else
           skb->ip_summed = CHECKSUM_HW;
+ #endif
        } 
     } 
  #endif
  
!    if (CHECK_IP_SUMMED(skb->ip_summed)) {
        xre->flags |= VMXNET2_TX_HW_XSUM;
     } else {
        xre->flags &= ~VMXNET2_TX_HW_XSUM;