lkml.org 
[lkml]   [2018]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next V2 03/11] tuntap: enable bh early during processing XDP
Date
This patch move the bh enabling a little bit earlier, this will be
used for factoring out the core XDP logic of tuntap.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/net/tun.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index d3677a544b56..372caf7d67d9 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1726,22 +1726,18 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun,
goto err_xdp;
}
}
+ rcu_read_unlock();
+ local_bh_enable();

skb = build_skb(buf, buflen);
- if (!skb) {
- rcu_read_unlock();
- local_bh_enable();
+ if (!skb)
return ERR_PTR(-ENOMEM);
- }

skb_reserve(skb, pad - delta);
skb_put(skb, len);
get_page(alloc_frag->page);
alloc_frag->offset += buflen;

- rcu_read_unlock();
- local_bh_enable();
-
return skb;

err_redirect:
--
2.17.1
\
 
 \ /
  Last update: 2018-09-12 05:19    [W:0.089 / U:0.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site