* [PATCH net-next] net: neterion: replace ip_fast_csum with csum_replace2
@ 2013-03-18 8:34 roy.qing.li
2013-03-18 17:02 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: roy.qing.li @ 2013-03-18 8:34 UTC (permalink / raw)
To: netdev
From: Li RongQing <roy.qing.li@gmail.com>
replace ip_fast_csum with csum_replace2 to save cpu cycles
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
---
drivers/net/ethernet/neterion/s2io.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c
index bfd8873..3371ff4 100644
--- a/drivers/net/ethernet/neterion/s2io.c
+++ b/drivers/net/ethernet/neterion/s2io.c
@@ -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;
--
1.7.10.4
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2013-03-18 8:34 [PATCH net-next] net: neterion: replace ip_fast_csum with csum_replace2 roy.qing.li
2013-03-18 17:02 ` David Miller
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