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Commit 9a18dd15 authored by Li RongQing's avatar Li RongQing Committed by David S. Miller
Browse files

net: neterion: replace ip_fast_csum with csum_replace2 



replace ip_fast_csum with csum_replace2 to save cpu cycles

Signed-off-by: default avatarLi RongQing <roy.qing.li@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1a2c6181

drivers/net/ethernet/neterion/s2io.c

+2 −4
Original line number Diff line number Diff line
@@ -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;