driver/qlogic: replace ip_fast_csum with csum_replace2

replace ip_fast_csum with csum_replace2 to save cpu cycles

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 6 deletions

diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
index 4782dcfde736..7692dfd4f262 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
@@ -27,6 +27,7 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/if_vlan.h>
+#include <net/checksum.h>
 #include "netxen_nic.h"
 #include "netxen_nic_hw.h"
 
@@ -1641,9 +1642,8 @@ netxen_process_lro(struct netxen_adapter *adapter,
         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
 
         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
+        csum_replace2(&iph->check, iph->tot_len, htons(length));
         iph->tot_len = htons(length);
-        iph->check = 0;
-        iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
         th->psh = push;
         th->seq = htonl(seq_number);
 
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 0e630061bff3..891f12d47c9c 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -9,6 +9,7 @@
 #include <linux/if_vlan.h>
 #include <net/ip.h>
 #include <linux/ipv6.h>
+#include <net/checksum.h>
 
 #include "qlcnic.h"
 
@@ -1132,9 +1133,8 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
                 iph = (struct iphdr *)skb->data;
                 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
                 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
+                csum_replace2(&iph->check, iph->tot_len, htons(length));
                 iph->tot_len = htons(length);
-                iph->check = 0;
-                iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
         }
 
         th->psh = push;
@@ -1595,9 +1595,8 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
                 iph = (struct iphdr *)skb->data;
                 th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
                 length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
+                csum_replace2(&iph->check, iph->tot_len, htons(length));
                 iph->tot_len = htons(length);
-                iph->check = 0;
-                iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
         }
 
         th->psh = push;