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net: neterion: replace ip_fast_csum with csum_replace2

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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>
This commit is contained in:
Li RongQing 2013-03-17 22:34:48 +00:00 committed by David S. Miller
parent 1a2c6181c4
commit 9a18dd15e2
1 changed files with 2 additions and 4 deletions
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6
drivers/net/ethernet/neterion/s2io.c
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@ -80,6 +80,7 @@
#include <linux/slab.h>
#include <linux/prefetch.h>
#include <net/tcp.h>
#include <net/checksum.h>
#include <asm/div64.h>
#include <asm/irq.h>
@ -8337,16 +8338,13 @@ static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro)
{
struct iphdr *ip = lro->iph;
struct tcphdr *tcp = lro->tcph;
__sum16 nchk;
struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
/* Update L3 header */
csum_replace2(&ip->check, ip->tot_len, htons(lro->total_len));
ip->tot_len = htons(lro->total_len);
ip->check = 0;
nchk = ip_fast_csum((u8 *)lro->iph, ip->ihl);
ip->check = nchk;
/* Update L4 header */
tcp->ack_seq = lro->tcp_ack;