netdev - [PATCH net-next 1/2] net: tap: replay while() loop with % operator in tap_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 11 Dec 2017 21:26:41 +0800
From:   yuan linyu <cugyly@....com>
To:     netdev@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
Subject: [PATCH net-next 1/2] net: tap: replay while() loop with % operator in tap_get_queue()

From: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>

Signed-off-by: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
---
 drivers/net/tap.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 0a886fda..78900a0 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -275,11 +275,7 @@ static struct tap_queue *tap_get_queue(struct tap_dev *tap,
 
 	if (likely(skb_rx_queue_recorded(skb))) {
 		rxq = skb_get_rx_queue(skb);
-
-		while (unlikely(rxq >= numvtaps))
-			rxq -= numvtaps;
-
-		queue = rcu_dereference(tap->taps[rxq]);
+		queue = rcu_dereference(tap->taps[rxq % numvtaps]);
 		goto out;
 	}
 
-- 
2.7.4