linux-kernel - [PATCH net-next 07/11] tuntap: move XDP flushing out of tun_do

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

Message-Id: <20180906040526.22518-8-jasowang@redhat.com>
Date:   Thu,  6 Sep 2018 12:05:22 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        mst@...hat.com, jasowang@...hat.com
Subject: [PATCH net-next 07/11] tuntap: move XDP flushing out of tun_do_xdp()

This will allow adding batch flushing on top.

Signed-off-by: Jason Wang <jasowang@...hat.com>
---
 drivers/net/tun.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 21b125020b3b..ff1cbf3ebd50 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1646,7 +1646,6 @@ static u32 tun_do_xdp(struct tun_struct *tun,
 	switch (act) {
 	case XDP_REDIRECT:
 		*err = xdp_do_redirect(tun->dev, xdp, xdp_prog);
-		xdp_do_flush_map();
 		if (*err)
 			break;
 		goto out;
@@ -1735,6 +1734,9 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun,
 		act = tun_do_xdp(tun, tfile, xdp_prog, &xdp, &err);
 		if (err)
 			goto err_xdp;
+
+		if (act == XDP_REDIRECT)
+			xdp_do_flush_map();
 		if (act != XDP_PASS)
 			goto out;
 
-- 
2.17.1